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Sample records for 90802-4213 phone 562980-4001

  1. 76 FR 65697 - Marine Mammals; File No. 16685

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-24

    ... Features box on the Applications and Permits for Protected Species (APPS) home page, https://apps.nmfs.noaa..., MD 20910; phone (301) 427-8401; fax (301) 713-0376; and Southwest Region, NMFS, 501 West Ocean Blvd., Suite 4200, Long Beach, CA 90802-4213; phone (562) 980-4001; fax (562) 980-4018. Written comments...

  2. 78 FR 14078 - Endangered Species; File No. 17405

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-04

    ... Protected Species (APPS) home page, https://apps.nmfs.noaa.gov , and then selecting File No. 17405 from the..., 1315 East-West Highway, Room 13705, Silver Spring, MD 20910; phone (301) 427-8401; fax (301) 713-0376; and Southwest Region, NMFS, 501 West Ocean Blvd., Suite 4200, Long Beach, CA 90802-4213; phone...

  3. 75 FR 11516 - Marine Mammals; File No. 808-1735

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-11

    ... Applications and Permits for Protected Species (APPS) home page, https://apps.nmfs.noaa.gov , and then..., Office of Protected Resources, NMFS, 1315 East-West Highway, Room 13705, Silver Spring, MD 20910; phone... Beach, CA 90802-4213; phone (562) 980-4001; fax (562) 980-4018; Written comments on this...

  4. 75 FR 58352 - Marine Mammals; File No. 14535

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-24

    ... potential impacts of human noise on marine mammals. The amendment is for the duration of the permit, which... Blvd., Suite 4200, Long Beach, CA 90802-4213; phone (562)980-4001; fax (562)980-4018. FOR FURTHER... from the requirement to prepare an environmental assessment or environmental impact statement....

  5. 75 FR 37388 - Marine Mammals; File No. 14535

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-29

    ... pinnipeds and to assess potential impacts of human noise on marine mammals. The proposed amendment is for... Blvd., Suite 4200, Long Beach, CA 90802-4213; phone (562)980-4001; fax (562)980-4018. Written comments... excluded from the requirement to prepare an environmental assessment or environmental impact...

  6. Cell Phones

    MedlinePlus

    ... Emitting Products Radiation-Emitting Products and Procedures Home, Business, and Entertainment Products Cell Phones Cell Phones Share Tweet Linkedin Pin it More sharing options Linkedin Pin it Email Print Under the law, FDA does not review the safety of radiation- ...

  7. Cellular Phones

    MedlinePlus

    ... free device such as a corded or cordless earpiece. This moves the antenna away from your head, ... of RF waves that reach the head. Corded earpieces emit virtually no RF waves (although the phone ...

  8. Cellular Phones

    MedlinePlus

    ... phones (including smartphones) give off a form of energy known as radiofrequency (RF) waves , so some concerns ... RF waves. This is a form of electromagnetic energy that falls between FM radio waves and microwaves. ...

  9. Cell phone explosion.

    PubMed

    Atreya, Alok; Kanchan, Tanuj; Nepal, Samata; Pandey, Bhuwan Raj

    2016-03-01

    Cell phone explosions and resultant burn injuries are rarely reported in the scientific literature. We report a case of cell phone explosion that occurred when a young male was listening to music while the mobile was plugged in for charging.

  10. Cell phones and cancer

    MedlinePlus

    Cancer and cell phones; Do cell phones cause cancer? ... Several major studies show no link between cell phones and cancer at this time. However, since the information available is based on short-term studies, the impact of many years of ...

  11. Adventures with Cell Phones

    ERIC Educational Resources Information Center

    Kolb, Liz

    2011-01-01

    Teachers are finding creative ways to turn the basic cell phone from a digital distraction into a versatile learning tool. In this article, the author explains why cell phones are important in learning and suggests rather than banning them that they be integrated into learning. She presents activities that can be done on a basic cell phone with a…

  12. Biosensing with cell phones.

    PubMed

    Preechaburana, Pakorn; Suska, Anke; Filippini, Daniel

    2014-07-01

    Continued progress in cell-phone devices has made them powerful mobile computers, equipped with sophisticated, permanent physical sensors embedded as the default configuration. By contrast, the incorporation of permanent biosensors in cell-phone units has been prevented by the multivocal nature of the stimuli and the reactions involved in biosensing and chemical sensing. Biosensing with cell phones entails the complementation of biosensing devices with the physical sensors and communication and processing capabilities of modern cell phones. Biosensing, chemical-sensing, environmental-sensing, and diagnostic capabilities would thus be supported and run on the residual capacity of existing cell-phone infrastructure. The technologies necessary to materialize such a scenario have emerged in different fields and applications. This article addresses the progress on cell-phone biosensing, the specific compromises, and the blend of technologies required to craft biosensing on cell phones.

  13. Cell Phones for Education

    ERIC Educational Resources Information Center

    Roberson, James H.; Hagevik, Rita A.

    2008-01-01

    Cell phones are fast becoming an integral part of students' everyday lives. They are regarded as important companions and tools for personal expression. School-age children are integrating the cell phone as such, and thus placing a high value on them. Educators endeavor to instill in students a high value for education, but often meet with…

  14. Cellular Phone Towers

    MedlinePlus

    ... depending on the construction materials of the building. Wood or cement block reduces the exposure level of ... mobile devices such as cell phones. The Environmental Protection Agency (EPA) states: “At very high levels, RF ...

  15. Cell Phones: Current Research Results

    MedlinePlus

    ... fields. Significant Ongoing Studies International Cohort Study on Mobile Phone Users (COSMOS) The COSMOS study aims to conduct ... World Health Organization: Electromagnetic Fields and Public Health: Mobile Phones International Agency for Research on Cancer Press Release ...

  16. Cell Phones for Science

    ERIC Educational Resources Information Center

    Lucking, Robert A.; Christmann, Edwin P.; Wighting, Mervyn J.

    2010-01-01

    Although in some schools cell phones have to be turned off or perhaps kept in lockers to avoid misuse, the authors hope to demonstrate in this article how they can be used under supervision to assist learning. This ubiquitous device can be a powerful classroom tool. (Contains 2 figures.)

  17. iPhone paper

    NASA Astrophysics Data System (ADS)

    2016-12-01

    Could you write a scientific manuscript using just your iPhone? Well, when Christoph Bartneck at the University of Canterbury in New Zealand was invited to submit a paper to the International Conference on Atomic and Nuclear Physics, in Atlanta, Georgia, in November, he decided to do just that.

  18. Cell Phone RF Radiation

    ERIC Educational Resources Information Center

    Abdul-Razzaq, Wathiq

    2015-01-01

    In a recent article in "Physics Today," Meredith and Redish emphasized the need to make introductory physics courses beneficial for life sciences majors. In this study, a lab activity is proposed to measure the intensity of electromagnetic waves emitted by cell phones and connect these measurements to various standards, biological…

  19. Cell Phone RF Radiation

    NASA Astrophysics Data System (ADS)

    Abdul-Razzaq, Wathiq

    2015-04-01

    In a recent article in Physics Today, Meredith and Redish emphasized the need to make introductory physics courses beneficial for life sciences majors.1 In this study, a lab activity is proposed to measure the intensity of electromagnetic waves emitted by cell phones and connect these measurements to various standards, biological topics, and personal health.

  20. Cell phones: modern man's nemesis?

    PubMed

    Makker, Kartikeya; Varghese, Alex; Desai, Nisarg R; Mouradi, Rand; Agarwal, Ashok

    2009-01-01

    Over the past decade, the use of mobile phones has increased significantly. However, with every technological development comes some element of health concern, and cell phones are no exception. Recently, various studies have highlighted the negative effects of cell phone exposure on human health, and concerns about possible hazards related to cell phone exposure have been growing. This is a comprehensive, up-to-the-minute overview of the effects of cell phone exposure on human health. The types of cell phones and cell phone technologies currently used in the world are discussed in an attempt to improve the understanding of the technical aspects, including the effect of cell phone exposure on the cardiovascular system, sleep and cognitive function, as well as localized and general adverse effects, genotoxicity potential, neurohormonal secretion and tumour induction. The proposed mechanisms by which cell phones adversely affect various aspects of human health, and male fertility in particular, are explained, and the emerging molecular techniques and approaches for elucidating the effects of mobile phone radiation on cellular physiology using high-throughput screening techniques, such as metabolomics and microarrays, are discussed. A novel study is described, which is looking at changes in semen parameters, oxidative stress markers and sperm DNA damage in semen samples exposed in vitro to cell phone radiation.

  1. Cochllear implants and GSM phone.

    PubMed

    Sorri, M J; Huttunen, K H; Välimaa, T T; Karinen, P J; Löppönen, H J

    2001-01-01

    Use of a telephone and GSM phones, in particular, was assessed by means of a postal interview sent to all adult Finnish implantees. The response rate was very high (87%). Fifty-one of the 61 respondents used a telephone and 27/61 also used a mobile phone, usually a digital phone. Two GSM phone models from Nokia (3110 and 6110) were tested with three different cochlear implant systems used by nine patients. Definite differences between the processors were found. Nucleus Spectra (two implantees) could not be used with any of the GSM phones under any test condition. Nucleus SPrint was incompatible with both GSM phone models in a poor field, while GSM phone model 6110 could be used in a good field. The Med-El Combi 40+ processor was compatible with both GSM models tested under any condition.

  2. Cell Phone Detection Techniques

    SciTech Connect

    Pratt, Richard M.; Bunch, Kyle J.; Puzycki, David J.; Slaugh, Ryan W.; Good, Morris S.; McMakin, Douglas L.

    2007-10-01

    A team composed of Rick Pratt, Dave Puczyki, Kyle Bunch, Ryan Slaugh, Morris Good, and Doug McMakin teamed together to attempt to exploit cellular telephone features and detect if a person was carrying a cellular telephone into a Limited Area. The cell phone’s electromagnetic properties were measured, analyzed, and tested in over 10 different ways to determine if an exploitable signature exists. The method that appears to have the most potential for success without adding an external tag is to measure the RF spectrum, not in the cell phone band, but between 240 and 400MHz. Figures 1- 7 show the detected signal levels from cell phones from three different manufacturers.

  3. No Phone Zone: Controlling Cell Phone Use in Academic Libraries

    ERIC Educational Resources Information Center

    Heaton, Shelley; Master, Nancy

    2006-01-01

    This article reports the results of a survey of cell phone policies in university libraries conducted over a three-month period in 2005. The authors sought information about the libraries' problems regarding cell phone use and attendant noise by students and other library users. The authors began with an 18-question survey of one hundred…

  4. Epidemic of cell phone virus

    NASA Astrophysics Data System (ADS)

    Wang, Pu; González, Marta; Barabási, Albert-László.

    2008-03-01

    Standard operating systems and Bluetooth technology will be a trend for future cell phone features. These will enable cell phone viruses to spread either through SMS or by sending Bluetooth requests when cell phones are physically close enough. The difference in spreading methods gives these two types of viruses' different epidemiological characteristics. SMS viruses' spread is mainly based on people's social connections, whereas the spreading of Bluetooth viruses is affected by people's mobility patterns and population distribution. Using cell phone data recording calls, SMS and locations of more than 6 million users, we study the spread of SMS and Bluetooth viruses and characterize how the social network and the mobility of mobile phone users affect such spreading processes.

  5. Mobile phones, cordless phones and the risk for brain tumours.

    PubMed

    Hardell, Lennart; Carlberg, Michael

    2009-07-01

    The Hardell-group conducted during 1997-2003 two case control studies on brain tumours including assessment of use of mobile phones and cordless phones. The questionnaire was answered by 905 (90%) cases with malignant brain tumours, 1,254 (88%) cases with benign tumours and 2,162 (89%) population-based controls. Cases were reported from the Swedish Cancer Registries. Anatomical area in the brain for the tumour was assessed and related to side of the head used for both types of wireless phones. In the current analysis we defined ipsilateral use (same side as the tumour) as >or=50% of the use and contralateral use (opposite side) as <50% of the calling time. We report now further results for use of mobile and cordless phones. Regarding astrocytoma we found highest risk for ipsilateral mobile phone use in the >10 year latency group, OR=3.3, 95% CI=2.0-5.4 and for cordless phone use OR=5.0, 95% CI=2.3-11. In total, the risk was highest for cases with first use <20 years age, for mobile phone OR=5.2, 95% CI=2.2-12 and for cordless phone OR=4.4, 95% CI=1.9-10. For acoustic neuroma, the highest OR was found for ipsilateral use and >10 year latency, for mobile phone OR=3.0, 95% CI=1.4-6.2 and cordless phone OR=2.3, 95% CI=0.6-8.8. Overall highest OR for mobile phone use was found in subjects with first use at age <20 years, OR=5.0, 95% CI 1.5-16 whereas no association was found for cordless phone in that group, but based on only one exposed case. The annual age-adjusted incidence of astrocytoma for the age group >19 years increased significantly by +2.16%, 95% CI +0.25 to +4.10 during 2000-2007 in Sweden in spite of seemingly underreporting of cases to the Swedish Cancer Registry. A decreasing incidence was found for acoustic neuroma during the same period. However, the medical diagnosis and treatment of this tumour type has changed during recent years and underreporting from a single center would have a large impact for such a rare tumour.

  6. Mobile Phone Terminal

    NASA Technical Reports Server (NTRS)

    1978-01-01

    In the photo, an employee of a real estate firm is contacting his office by means of HICOM, an advanced central terminal for mobile telephones. Developed by the Orlando Division of Martin Marietta Aerospace, Orlando, Florida, and manufactured by Harris Corporation's RF Division, Rochester, N.Y., HICOM upgrades service to users, provides better system management to telephone companies, and makes more efficient use of available mobile telephone channels through a computerized central control terminal. The real estate man, for example, was able to dial his office and he could also have direct-dialed a long distance number. Mobile phones in most areas not yet served by HICOM require an operator's assistance for both local and long distance calls. HICOM improves system management by automatically recording information on all calls for accurate billing, running continual performance checks on its own operation, and reporting any malfunctions to a central office.

  7. Cellular phones: are they detrimental?

    PubMed

    Salama, Osama E; Abou El Naga, Randa M

    2004-01-01

    The issue of possible health effects of cellular phones is very much alive in the public's mind where the rapid increase in the number of the users of cell phones in the last decade has increased the exposure of people to the electromagnetic fields (EMFs). Health consequences of long term use of mobile phones are not known in detail but available data indicates the development of non specific annoying symptoms on acute exposure to mobile phone radiations. In an attempt to determine the prevalence of such cell phones associated health manifestations and the factors affecting their occurrence, a cross sectional study was conducted in five randomly selected faculties of Alexandria University. Where, 300 individuals including teaching staff, students and literate employee were equally allocated and randomly selected among the five faculties. Data about mobile phone's users and their medical history, their pattern of mobile usage and the possible deleterious health manifestations associated with cellular phone use was collected. The results revealed 68% prevalence of mobile phone usage, nearly three quarters of them (72.5%) were complainers of the health manifestations. They suffered from headache (43%), earache (38.3%), sense of fatigue (31.6%), sleep disturbance (29.5%), concentration difficulty (28.5%) and face burning sensation (19.2%). Both univariate and multivariate analysis were consistent in their findings. Symptomatic users were found to have significantly higher frequency of calls/day, longer call duration and longer total duration of mobile phone usage/day than non symptomatic users. For headache both call duration and frequency of calls/day were the significant predicting factors for its occurrence (chi2 = 18.208, p = 0.0001). For earache, in addition to call duration, the longer period of owning the mobile phone were significant predictors (chi2 = 16.996, p = 0.0002). Sense of fatigue was significantly affected by both call duration and age of the user

  8. Addictive personality and problematic mobile phone use.

    PubMed

    Takao, Motoharu; Takahashi, Susumu; Kitamura, Masayoshi

    2009-10-01

    Mobile phone use is banned or regulated in some circumstances. Despite recognized safety concerns and legal regulations, some people do not refrain from using mobile phones. Such problematic mobile phone use can be considered to be an addiction-like behavior. To find the potential predictors, we examined the correlation between problematic mobile phone use and personality traits reported in addiction literature, which indicated that problematic mobile phone use was a function of gender, self-monitoring, and approval motivation but not of loneliness. These findings suggest that the measurements of these addictive personality traits would be helpful in the screening and intervention of potential problematic users of mobile phones.

  9. Mobile phone and my health

    SciTech Connect

    Surducan, Aneta; Dabala, Dana; Neamtu, Camelia Surducan, Vasile Surducan, Emanoil

    2013-11-13

    The interaction of the microwave radiation emitted by mobile phones with the user's body is analyzed from the International Commission on Non-Ionizing Radiation Protection (ICNIRP) recommendations perspective as a correlation between the specific absorption ratio (SAR) of the mobile phone and the call duration. The relative position of the cell phone to the user's body, the dielectric properties of the exposed body parts, the SAR value and the call duration are considered in the local body temperature rise due to the microwave heating effect. The recommended local temperature rise limit in the human body is evaluated according to standards. The aim of this study is to disseminate information to young people, especially high school students, about the microwave thermal effects on the human body, to make them aware of the environmental electromagnetic pollution and to offer them a simple method of biological self protection.

  10. Mobile Phone Radiation and Cancer

    NASA Astrophysics Data System (ADS)

    Plotz, Thomas

    2017-04-01

    A possible link between cancer and the usage of mobile phones has been widely discussed in the media in the last 10 years. It is no surprise that students keep asking their physics teacher for advice regarding the handling of mobile phones and mobile phone radiation. This article aims to help teachers include this interesting topic in the classroom. It provides basic information and summarizes the facts made available by 11 recent peer-reviewed studies. First some information about the physical facts and medical information on brain cancer are given. Then the different studies are presented. Last but not least, different possibilities to implement this topic in the high school classroom are given.

  11. Cell phones: the psychosocial risks.

    PubMed

    Sansone, Randy A; Sansone, Lori A

    2013-01-01

    Cell phones are a relatively novel and evolving technology. While the potential benefits of this technology continue to emerge, so do the potential psychosocial risks. For example, one psychosocial risk is user stress, which appears to be related to feeling compelled to promptly respond to cell-phone activity in order to maintain spontaneity and access with others. Other potential psychosocial risks include disruptions in sleep; the user's risk of exposure to cyberbullying, particularly the unwanted exposure of photographs and/or videos of the victim; and overuse, particularly among adolescents. With regard to the latter phenomenon, the boundaries among overuse, misuse, dependence, and addiction are not scientifically clear. Therefore, while cell phones are a convenient and expedient technology, they are not without their potential psychosocial hazards.

  12. Mobile phone and my health

    NASA Astrophysics Data System (ADS)

    Surducan, Aneta; Dabala, Dana; Neamtu, Camelia; Surducan, Vasile; Surducan, Emanoil

    2013-11-01

    The interaction of the microwave radiation emitted by mobile phones with the user's body is analyzed from the International Commission on Non-Ionizing Radiation Protection (ICNIRP) recommendations perspective as a correlation between the specific absorption ratio (SAR) of the mobile phone and the call duration. The relative position of the cell phone to the user's body, the dielectric properties of the exposed body parts, the SAR value and the call duration are considered in the local body temperature rise due to the microwave heating effect. The recommended local temperature rise limit in the human body is evaluated according to standards. The aim of this study is to disseminate information to young people, especially high school students, about the microwave thermal effects on the human body, to make them aware of the environmental electromagnetic pollution and to offer them a simple method of biological self protection.

  13. Mobile Phone Mood Charting for Adolescents

    ERIC Educational Resources Information Center

    Matthews, Mark; Doherty, Gavin; Sharry, John; Fitzpatrick, Carol

    2008-01-01

    Mobile phones may provide a useful and engaging platform for supporting therapeutic services working with adolescents. This paper examines the potential benefits of the mobile phone for self-charting moods in comparison to existing methods in current practice. The paper describes a mobile phone application designed by the authors which allows…

  14. Cell Phones in the Classroom? Yes!

    ERIC Educational Resources Information Center

    Gaer, Susan

    2011-01-01

    The author has been using mobile phones actively in her adult education classes for the last two years. She has found that, with a bit of cell phone etiquette, students are responsible and will use phones as learning tools instead of just as toys. In this article, the author describes how she uses them and suggests effective techniques for…

  15. Mobile Learning Using Mobile Phones

    ERIC Educational Resources Information Center

    Vicente, Paula

    2013-01-01

    The participation in mobile learning programs is conditioned by having/using mobile communication technology. Those who do not have or use such technology cannot participate in mobile learning programs. This study evaluates who are the most likely participants of mobile learning programs by examining the demographic profile and mobile phone usage…

  16. A Mobile Phone Faraday Cage

    ERIC Educational Resources Information Center

    French, M. M. J.

    2011-01-01

    A Faraday cage is an interesting physical phenomenon where an electromagnetic wave can be excluded from a volume of space by enclosure with an electrically conducting material. The practical application of this in the classroom is to block the signal to a mobile phone by enclosing it in a metal can. The background of the physics behind this is…

  17. Accidental mobile phone card ingestion

    PubMed Central

    Dixit, Sudesh; Mekwan, Jayanand; Brayley, Nigel F

    2009-01-01

    Accidental overdose, poisoning and foreign-body ingestion are common presentations to the emergency department. Usually, the ingested material is a common drug or household product. We present an unusual case of accidental ingestion where the foreign body was a mobile phone simulation (SIM) card. PMID:21686554

  18. Use of mobile phones and cancer risk.

    PubMed

    Ayanda, Olushola S; Baba, Alafara A; Ayanda, Omolola T

    2012-01-01

    Mobile phones work by transmitting and receiving radio frequency microwave radiation. The radio frequency (RF) emitted by mobile phones is stronger than FM radio signal which are known to cause cancer. Though research and evidence available on the risk of cancer by mobile phones does not provide a clear and direct support that mobile phones cause cancers. Evidence does not also support an association between exposure to radio frequency and microwave radiation from mobile phones and direct effects on health. It is however clear that lack of available evidence of cancer as regards the use of mobile phone should not be interpreted as proof of absence of cancer risk, so that excessive use of mobile phones should be taken very seriously and with caution to prevent cancer.

  19. A mobile phone Faraday cage

    NASA Astrophysics Data System (ADS)

    French, M. M. J.

    2011-05-01

    A Faraday cage is an interesting physical phenomenon where an electromagnetic wave can be excluded from a volume of space by enclosure with an electrically conducting material. The practical application of this in the classroom is to block the signal to a mobile phone by enclosing it in a metal can. The background of the physics behind this is described in some detail, and this is followed by a explanation of some demonstrations and experiments which I have used.

  20. Mobile phones and sleep - A review

    NASA Astrophysics Data System (ADS)

    Supe, Sanjay S.

    2010-01-01

    The increasing use of mobile phones has raised concerns regarding the potential health effects of exposure to the radiofrequency electromagnetic fields. An increasing amount research related to mobile phone use has focussed on the possible effects of mobile phone exposure on human brain activity and function. In particular, the use of sleep research has become a more widely used technique for assessing the possible effects of mobile phones on human health and wellbeing especially in the investigation of potential changes in sleep architecture resulting from mobile phone use. Acute exposure to a mobile phone prior to sleep significantly enhances electroencephalogram spectral power in the sleep spindle frequency range. This mobile phone-induced enhancement in spectral power is largely transitory and does not linger throughout the night. Furthermore, a reduction in rapid eye movement sleep latency following mobile phone exposure was also found, although interestingly, neither this change in rapid eye movement sleep latency or the enhancement in spectral power following mobile phone exposure, led to changes in the overall quality of sleep. In conclusion, a short exposure to the radiofrequency electromagnetic fields emitted by a mobile phone handset immediately prior to sleep is sufficient to induce changes in brain activity in the initial part of sleep. The consequences or functional significance of this effect are currently unknown and it would be premature to draw conclusions about possible health consequences.

  1. Quantitative imaging with a mobile phone microscope.

    PubMed

    Skandarajah, Arunan; Reber, Clay D; Switz, Neil A; Fletcher, Daniel A

    2014-01-01

    Use of optical imaging for medical and scientific applications requires accurate quantification of features such as object size, color, and brightness. High pixel density cameras available on modern mobile phones have made photography simple and convenient for consumer applications; however, the camera hardware and software that enables this simplicity can present a barrier to accurate quantification of image data. This issue is exacerbated by automated settings, proprietary image processing algorithms, rapid phone evolution, and the diversity of manufacturers. If mobile phone cameras are to live up to their potential to increase access to healthcare in low-resource settings, limitations of mobile phone-based imaging must be fully understood and addressed with procedures that minimize their effects on image quantification. Here we focus on microscopic optical imaging using a custom mobile phone microscope that is compatible with phones from multiple manufacturers. We demonstrate that quantitative microscopy with micron-scale spatial resolution can be carried out with multiple phones and that image linearity, distortion, and color can be corrected as needed. Using all versions of the iPhone and a selection of Android phones released between 2007 and 2012, we show that phones with greater than 5 MP are capable of nearly diffraction-limited resolution over a broad range of magnifications, including those relevant for single cell imaging. We find that automatic focus, exposure, and color gain standard on mobile phones can degrade image resolution and reduce accuracy of color capture if uncorrected, and we devise procedures to avoid these barriers to quantitative imaging. By accommodating the differences between mobile phone cameras and the scientific cameras, mobile phone microscopes can be reliably used to increase access to quantitative imaging for a variety of medical and scientific applications.

  2. Psychological predictors of problem mobile phone use.

    PubMed

    Bianchi, Adriana; Phillips, James G

    2005-02-01

    Mobile phone use is banned or illegal under certain circumstances and in some jurisdictions. Nevertheless, some people still use their mobile phones despite recognized safety concerns, legislation, and informal bans. Drawing potential predictors from the addiction literature, this study sought to predict usage and, specifically, problematic mobile phone use from extraversion, self-esteem, neuroticism, gender, and age. To measure problem use, the Mobile Phone Problem Use Scale was devised and validated as a reliable self-report instrument, against the Addiction Potential Scale and overall mobile phone usage levels. Problem use was a function of age, extraversion, and low self-esteem, but not neuroticism. As extraverts are more likely to take risks, and young drivers feature prominently in automobile accidents, this study supports community concerns about mobile phone use, and identifies groups that should be targeted in any intervention campaigns.

  3. Mobile phones, mobile phone base stations and cancer: a review.

    PubMed

    Moulder, J E; Foster, K R; Erdreich, L S; McNamee, J P

    2005-03-01

    There have been reports in the media and claims in the courts that radiofrequency (RF) emissions from mobile phones are a cause of cancer, and there have been numerous public objections to the siting of mobile phone base antennas because of a fear of cancer. This review summarizes the current state of evidence concerning whether the RF energy used for wireless communication might be carcinogenic. Relevant studies were identified by searching MedLine with a combination of exposure and endpoint terms. This was supplemented by a review of the over 1700 citations assembled by the Institute of Electrical and Electronics Engineers (IEEE) International Committee on Electromagnetic Safety as part of their updating of the IEEE C95.1 RF energy safety guidelines. Where there were multiple studies, preference was given to recent reports, to positive reports of effects and to attempts to confirm such positive reports. Biophysical considerations indicate that there is little theoretical basis for anticipating that RF energy would have significant biological effects at the power levels used by modern mobile phones and their base station antennas. The epidemiological evidence for a causal association between cancer and RF energy is weak and limited. Animal studies have provided no consistent evidence that exposure to RF energy at non-thermal intensities causes or promotes cancer. Extensive in vitro studies have found no consistent evidence of genotoxic potential, but in vitro studies assessing the epigenetic potential of RF energy are limited. Overall, a weight-of-evidence evaluation shows that the current evidence for a causal association between cancer and exposure to RF energy is weak and unconvincing. However, the existing epidemiology is limited and the possibility of epigenetic effects has not been thoroughly evaluated, so that additional research in those areas will be required for a more thorough assessment of the possibility of a causal connection between cancer and the

  4. CB-EMIS CELL PHONE CLIENT

    SciTech Connect

    Lurie, Gordon

    2007-01-02

    The cell phone software allows any Java enabled cell phone to view sensor and meteorological data via an internet connection using a secure connection to the CB-EMIS Web Service. Users with appropriate privileges can monitor the state of the sensors and perform simple maintenance tasks remotely. All sensitive data is downloaded from the web service, thus protecting sensitive data in the event a cell phone is lost.

  5. [Radiation from mobile phone and the health].

    PubMed

    Wang, Yan; Cao, Zhao-jin

    2006-07-01

    With the development of the mobile communication industry, there are considerable public concerns about the relationship between mobile phone radiations and human health. With regard to electromagnetic field emitted by mobile phone maybe influence tumor,learning and memory, subjective symptoms and blood-brain barrier, a large number of studies have been performed abroad. This paper reviews the research development abroad on these problems, and analysizes the mechanism, through which the mobile phone effects on human health.

  6. Quantitative Imaging with a Mobile Phone Microscope

    PubMed Central

    Skandarajah, Arunan; Reber, Clay D.; Switz, Neil A.; Fletcher, Daniel A.

    2014-01-01

    Use of optical imaging for medical and scientific applications requires accurate quantification of features such as object size, color, and brightness. High pixel density cameras available on modern mobile phones have made photography simple and convenient for consumer applications; however, the camera hardware and software that enables this simplicity can present a barrier to accurate quantification of image data. This issue is exacerbated by automated settings, proprietary image processing algorithms, rapid phone evolution, and the diversity of manufacturers. If mobile phone cameras are to live up to their potential to increase access to healthcare in low-resource settings, limitations of mobile phone–based imaging must be fully understood and addressed with procedures that minimize their effects on image quantification. Here we focus on microscopic optical imaging using a custom mobile phone microscope that is compatible with phones from multiple manufacturers. We demonstrate that quantitative microscopy with micron-scale spatial resolution can be carried out with multiple phones and that image linearity, distortion, and color can be corrected as needed. Using all versions of the iPhone and a selection of Android phones released between 2007 and 2012, we show that phones with greater than 5 MP are capable of nearly diffraction-limited resolution over a broad range of magnifications, including those relevant for single cell imaging. We find that automatic focus, exposure, and color gain standard on mobile phones can degrade image resolution and reduce accuracy of color capture if uncorrected, and we devise procedures to avoid these barriers to quantitative imaging. By accommodating the differences between mobile phone cameras and the scientific cameras, mobile phone microscopes can be reliably used to increase access to quantitative imaging for a variety of medical and scientific applications. PMID:24824072

  7. Mobile Phone Usage for M-Learning: Comparing Heavy and Light Mobile Phone Users

    ERIC Educational Resources Information Center

    Suki, Norbayah Mohd; Suki, Norazah Mohd

    2007-01-01

    Purpose: Mobile technologies offer the opportunity to embed learning in a natural environment. The objective of the study is to examine how the usage of mobile phones for m-learning differs between heavy and light mobile phone users. Heavy mobile phone users are hypothesized to have access to/subscribe to one type of mobile content than light…

  8. Hold the Phone! High School Students' Perceptions of Mobile Phone Integration in the Classroom

    ERIC Educational Resources Information Center

    Thomas, Kevin; Muñoz, Marco A.

    2016-01-01

    This study examined the survey responses of 628 high school students in a large urban school district to determine their perceptions of mobile phone use in the classroom. Findings indicated that the majority of students (90.7%) were using a variety of mobile phone features for school-related work. Student support for instructional uses of phones,…

  9. WADeG Cell Phone

    SciTech Connect

    2009-09-01

    The on cell phone software captures the images from the CMOS camera periodically, stores the pictures, and periodically transmits those images over the cellular network to the server. The cell phone software consists of several modules: CamTest.cpp, CamStarter.cpp, StreamIOHandler .cpp, and covertSmartDevice.cpp. The camera application on the SmartPhone is CamStarter, which is “the” user interface for the camera system. The CamStarter user interface allows a user to start/stop the camera application and transfer files to the server. The CamStarter application interfaces to the CamTest application through registry settings. Both the CamStarter and CamTest applications must be separately deployed on the smartphone to run the camera system application. When a user selects the Start button in CamStarter, CamTest is created as a process. The smartphone begins taking small pictures (CAPTURE mode), analyzing those pictures for certain conditions, and saving those pictures on the smartphone. This process will terminate when the user selects the Stop button. The camtest code spins off an asynchronous thread, StreamIOHandler, to check for pictures taken by the camera. The received image is then tested by StreamIOHandler to see if it meets certain conditions. If those conditions are met, the CamTest program is notified through the setting of a registry key value and the image is saved in a designated directory in a custom BMP file which includes a header and the image data. When the user selects the Transfer button in the CamStarter user interface, the covertsmartdevice code is created as a process. Covertsmartdevice gets all of the files in a designated directory, opens a socket connection to the server, sends each file, and then terminates.

  10. Health Issues: Do Cell Phones Pose a Health Hazard?

    MedlinePlus

    ... Procedures Home, Business, and Entertainment Products Cell Phones Health Issues Share Tweet Linkedin Pin it More sharing ... it Email Print Do cell phones pose a health hazard? Many people are concerned that cell phone ...

  11. Aquarius iPhone Application

    NASA Technical Reports Server (NTRS)

    Estes, Joseph C., Jr.; Arca. Jeremy M.; Ko, Michael A.; Oks, Boris

    2012-01-01

    The Office of the CIO at JPL has developed an iPhone application for the Aquarius/SAC-D mission. The application includes specific information about the science and purpose of the Aquarius satellite and also features daily mission news updates pulled from sources at Goddard Space Flight Center as well as Twitter. The application includes a media and data tab section. The media section displays images from the observatory, viewing construction up to the launch and also includes various videos and recorded diaries from the Aquarius Project Manager. The data tab highlights many of the factors that affect the Earth s ocean and the water cycle. The application leverages the iPhone s accelerometer to move the Aquarius Satellite over the Earth, revealing these factors. Lastly, this application features a countdown timer to the satellite s launch, which is currently counting the days since launch. This application was highly successful in promoting the Aquarius Mission and educating the public about how ocean salinity is paramount to understanding the Earth.

  12. Cell phones as imaging sensors

    NASA Astrophysics Data System (ADS)

    Bhatti, Nina; Baker, Harlyn; Marguier, Joanna; Berclaz, Jérôme; Süsstrunk, Sabine

    2010-04-01

    Camera phones are ubiquitous, and consumers have been adopting them faster than any other technology in modern history. When connected to a network, though, they are capable of more than just picture taking: Suddenly, they gain access to the power of the cloud. We exploit this capability by providing a series of image-based personal advisory services. These are designed to work with any handset over any cellular carrier using commonly available Multimedia Messaging Service (MMS) and Short Message Service (SMS) features. Targeted at the unsophisticated consumer, these applications must be quick and easy to use, not requiring download capabilities or preplanning. Thus, all application processing occurs in the back-end system (i.e., as a cloud service) and not on the handset itself. Presenting an image to an advisory service in the cloud, a user receives information that can be acted upon immediately. Two of our examples involve color assessment - selecting cosmetics and home décor paint palettes; the third provides the ability to extract text from a scene. In the case of the color imaging applications, we have shown that our service rivals the advice quality of experts. The result of this capability is a new paradigm for mobile interactions - image-based information services exploiting the ubiquity of camera phones.

  13. The Use of Smart phones in Ophthalmology.

    PubMed

    Zvornicanin, Edita; Zvornicanin, Jasmin; Hadziefendic, Bahrudin

    2014-06-01

    Smart phones are being increasingly used among health professionals. Ophthalmological applications are widely available and can turn smart phones into sophisticated medical devices. Smart phones can be useful instruments for the practice of evidence-based medicine, professional education, mobile clinical communication, patient education, disease self-management, remote patient monitoring or as powerful administrative tools. Several applications are available for different ophthalmological examinations that can assess visual acuity, color vision, astigmatism, pupil size, Amsler grid test and more. Smart phones can be useful ophthalmic devices for taking images of anterior and posterior eye segment. Professional literature and educational material for patients are easily available with use of smart phones. Smart phones can store great amount of informations and are useful for long term monitoring with caution for patient confidentiality. The use of smart phones especially as diagnostic tools is not standardized and results should be carefully considered. Innovative role of smartphone technology and its use in research, education and information sharing makes smart phones a future of ophthalmology and medicine.

  14. Cell Phones and PDA's Hit K-6

    ERIC Educational Resources Information Center

    Dodds, Richard; Mason, Christine Y.

    2005-01-01

    Although cell phones keep kids in touch with families and personal digital assistants (PDA's) help organize assignments and give Internet access, when they are added to the school climate, educators must reassess policies so technology does not interfere with instruction time. This article discusses the several effects of cell phones to K-6…

  15. Cell Phones Transform a Science Methods Course

    ERIC Educational Resources Information Center

    Madden, Lauren

    2012-01-01

    A science methods instructor intentionally encouraged cell phone use for class work to discover how cell phones can be used as research tools to enhance the content and engage the students. The anecdotal evidence suggested that students who used their smartphones as research tools experienced the science content and pedagogical information…

  16. Cell-Phone Addiction: A Review.

    PubMed

    De-Sola Gutiérrez, José; Rodríguez de Fonseca, Fernando; Rubio, Gabriel

    2016-01-01

    We present a review of the studies that have been published about addiction to cell phones. We analyze the concept of cell-phone addiction as well as its prevalence, study methodologies, psychological features, and associated psychiatric comorbidities. Research in this field has generally evolved from a global view of the cell phone as a device to its analysis via applications and contents. The diversity of criteria and methodological approaches that have been used is notable, as is a certain lack of conceptual delimitation that has resulted in a broad spread of prevalent data. There is a consensus about the existence of cell-phone addiction, but the delimitation and criteria used by various researchers vary. Cell-phone addiction shows a distinct user profile that differentiates it from Internet addiction. Without evidence pointing to the influence of cultural level and socioeconomic status, the pattern of abuse is greatest among young people, primarily females. Intercultural and geographical differences have not been sufficiently studied. The problematic use of cell phones has been associated with personality variables, such as extraversion, neuroticism, self-esteem, impulsivity, self-identity, and self-image. Similarly, sleep disturbance, anxiety, stress, and, to a lesser extent, depression, which are also associated with Internet abuse, have been associated with problematic cell-phone use. In addition, the present review reveals the coexistence relationship between problematic cell-phone use and substance use such as tobacco and alcohol.

  17. Adolescents' Dialogic Composing with Mobile Phones

    ERIC Educational Resources Information Center

    Warner, Julie

    2016-01-01

    This 14-month study examined the phone-based composing practice of three adolescents. Given the centrality of mobile phones to youth culture, the researcher sought to create a description of the participants' composing practices with these devices. Focal participants were users of Twitter and Instagram, two social media platforms that are usually…

  18. Effectiveness of Vocabulary Learning via Mobile Phone

    ERIC Educational Resources Information Center

    Lu, M.

    2008-01-01

    Whereas the penetration of mobile phones in Asian countries keeps climbing, little research has explored the application of the short message service (SMS) in second language learning. This study aims to examine the effectiveness of SMS vocabulary lessons of limited lexical information on the small screens of mobile phones. Thirty high school…

  19. Reading and Grammar Learning through Mobile Phones

    ERIC Educational Resources Information Center

    Wang, Shudong; Smith, Simon

    2013-01-01

    This paper describes an ongoing language-learning project, three years into its development. We examine both the feasibility and the limitations of developing English reading and grammar skills through the interface of mobile phones. Throughout the project, reading and grammar materials were regularly sent to students' mobile phones. Students read…

  20. Cell phones change the way we walk.

    PubMed

    Lamberg, Eric M; Muratori, Lisa M

    2012-04-01

    Cell phone use among pedestrians leads to increased cognitive distraction, reduced situation awareness and increases in unsafe behavior. Performing a dual-task, such as talking or texting with a cell phone while walking, may interfere with working memory and result in walking errors. At baseline, thirty-three participants visually located a target 8m ahead; then vision was occluded and they were instructed to walk to the remembered target. One week later participants were assigned to either walk, walk while talking on a cell phone, or walk while texting on a cell phone toward the target with vision occluded. Duration and final location of the heel were noted. Linear distance traveled, lateral angular deviation from the start line, and gait velocity were derived. Changes from baseline to testing were analyzed with paired t-tests. Participants engaged in cell phone use presented with significant reductions in gait velocity (texting: 33% reduction, p=0.01; talking: 16% reduction, p=0.02). Moreover, participants who were texting while walking demonstrated a 61% increase in lateral deviation (p=0.04) and 13% increase in linear distance traveled (p=0.03). These results suggest that the dual-task of walking while using a cell phone impacts executive function and working memory and influences gait to such a degree that it may compromise safety. Importantly, comparison of the two cell phone conditions demonstrates texting creates a significantly greater interference effect on walking than talking on a cell phone.

  1. Mobile phone technology in chronic disease management.

    PubMed

    Blake, Holly

    Mobile phones are being used to improve nurse-patient communication and monitor health outcomes in chronic disease. Innovative applications of mobile technology are expected to increase over time in community management of cancer, heart disease, asthma and diabetes. This article focuses on mobile phone technology and its contribution to health care.

  2. The Use of Smart phones in Ophthalmology

    PubMed Central

    Zvornicanin, Edita; Zvornicanin, Jasmin; Hadziefendic, Bahrudin

    2014-01-01

    Smart phones are being increasingly used among health professionals. Ophthalmological applications are widely available and can turn smart phones into sophisticated medical devices. Smart phones can be useful instruments for the practice of evidence-based medicine, professional education, mobile clinical communication, patient education, disease self-management, remote patient monitoring or as powerful administrative tools. Several applications are available for different ophthalmological examinations that can assess visual acuity, color vision, astigmatism, pupil size, Amsler grid test and more. Smart phones can be useful ophthalmic devices for taking images of anterior and posterior eye segment. Professional literature and educational material for patients are easily available with use of smart phones. Smart phones can store great amount of informations and are useful for long term monitoring with caution for patient confidentiality. The use of smart phones especially as diagnostic tools is not standardized and results should be carefully considered. Innovative role of smartphone technology and its use in research, education and information sharing makes smart phones a future of ophthalmology and medicine. PMID:25132717

  3. Cell-Phone Addiction: A Review

    PubMed Central

    De-Sola Gutiérrez, José; Rodríguez de Fonseca, Fernando; Rubio, Gabriel

    2016-01-01

    We present a review of the studies that have been published about addiction to cell phones. We analyze the concept of cell-phone addiction as well as its prevalence, study methodologies, psychological features, and associated psychiatric comorbidities. Research in this field has generally evolved from a global view of the cell phone as a device to its analysis via applications and contents. The diversity of criteria and methodological approaches that have been used is notable, as is a certain lack of conceptual delimitation that has resulted in a broad spread of prevalent data. There is a consensus about the existence of cell-phone addiction, but the delimitation and criteria used by various researchers vary. Cell-phone addiction shows a distinct user profile that differentiates it from Internet addiction. Without evidence pointing to the influence of cultural level and socioeconomic status, the pattern of abuse is greatest among young people, primarily females. Intercultural and geographical differences have not been sufficiently studied. The problematic use of cell phones has been associated with personality variables, such as extraversion, neuroticism, self-esteem, impulsivity, self-identity, and self-image. Similarly, sleep disturbance, anxiety, stress, and, to a lesser extent, depression, which are also associated with Internet abuse, have been associated with problematic cell-phone use. In addition, the present review reveals the coexistence relationship between problematic cell-phone use and substance use such as tobacco and alcohol. PMID:27822187

  4. PhoneSat - The Smartphone Nanosatellite

    NASA Technical Reports Server (NTRS)

    Cockrell, James J.; Yost, Bruce; Petro, Andrew

    2013-01-01

    NASAs PhoneSat project will test whether spacecraft can be built using smartphones to launch the lowest-cost satellites ever flown in space. Each PhoneSat nanosatellite is one cubesat unit - a satellite in a 10 cm (approx. 4 inches) cube or about the size of a tissue box - and weighs approximately three pounds. Engineers believe PhoneSat technology will enable NASA to launch multiple new satellites capable of conducting science and exploration missions at a small fraction of the cost of conventional satellites.

  5. PhoneSat - The Smartphone Nanosatellite

    NASA Technical Reports Server (NTRS)

    Cockrell, James J.; Yost, Bruce; Petro, Andrew

    2013-01-01

    NASA's PhoneSat project tests whether spacecraft can be built using smartphones to launch the lowest-cost satellites ever flown in space. Each PhoneSat nanosatellite is one cubesat unit - a satellite in a 10 cm (approx. 4 inches) cube or about the size of a tissue box - and weighs approximately 1 kg (2.2 pounds). Engineers believe PhoneSat technology will enable NASA to launch multiple new satellites capable of conducting science and exploration missions at a small fraction of the cost of conventional satellites.

  6. Students using mobile phones in the classroom: Can the phones increase content learning

    NASA Astrophysics Data System (ADS)

    Rinehart, David Lee

    A study was conducted at a high-performing school in Southern California to explore the effects on learning content from students using their own smart phones in and out of the classroom. The study used a Switching Replications design format which allowed two independent analyses of posttest scores between a group using e-flash cards on smart phones and a group using paper flash cards. Quantitative data was collected via two tailed, t-tests and qualitative data was collected through observations and interviews. Results suggest that knowledge level learning may be increased with mobile phone use, but no effect on comprehension level learning was found. Students found the phones to be convenient in accessing flash cards anytime and anywhere. Enthusiasm for using the phones in class while initially high waned over the 1 month study duration. Students perceived the phones to not be a significant source of distraction outside of class.

  7. Smart Phones Permitted: How Teachers Use Text Messaging to Collaborate

    ERIC Educational Resources Information Center

    Cosier, Meghan; Gomez, Audri; McKee, Aja; Maghzi, Kimiya Sohrab

    2015-01-01

    The use of smart phones by teachers in K-12 education has been contentious. Although teachers are often instructed to put their phones away during instruction, teachers and students can benefit in many ways from using smart phones in the classroom. The use of information systems such as a smart phone can support knowledge sharing and collaboration…

  8. Smart Phones, a Powerful Tool in the Chemistry Classroom

    ERIC Educational Resources Information Center

    Williams, Antony J.; Pence, Harry E.

    2011-01-01

    Cell phones, especially "smart phones", seem to have become ubiquitous. Actually, it is misleading to call many of these devices phones, as they are actually a portable and powerful computer that can be very valuable in the chemistry classroom. Currently, there are three major ways in which smart phones can be used for education. Smart phones…

  9. Cell Phone Use by Adults with Intellectual Disabilities

    ERIC Educational Resources Information Center

    Bryen, Diane Nelson; Carey, Allison; Friedman, Mark

    2007-01-01

    Although cell phone use has grown dramatically, there is a gap in cell phone access between people with disabilities and the general public. The importance of cell phone use among people with intellectual disabilities and studies about use of cell phones by adults with intellectual disabilities was described. Our goal was to determine the extent…

  10. iPhone 4s and iPhone 5s Imaging of the Eye

    PubMed Central

    Jalil, Maaz; Ferenczy, Sandor R.; Shields, Carol L.

    2017-01-01

    Background/Aims To evaluate the technical feasibility of a consumer-grade cellular iPhone camera as an ocular imaging device compared to existing ophthalmic imaging equipment for documentation purposes. Methods A comparison of iPhone 4s and 5s images was made with external facial images (macrophotography) using Nikon cameras, slit-lamp images (microphotography) using Zeiss photo slit-lamp camera, and fundus images (fundus photography) using RetCam II. Results In an analysis of six consecutive patients with ophthalmic conditions, both iPhones achieved documentation of external findings (macrophotography) using standard camera modality, tap to focus, and built-in flash. Both iPhones achieved documentation of anterior segment findings (microphotography) during slit-lamp examination through oculars. Both iPhones achieved fundus imaging using standard video modality with continuous iPhone illumination through an ophthalmic lens. Comparison to standard ophthalmic cameras, macrophotography and microphotography were excellent. In comparison to RetCam fundus photography, iPhone fundus photography revealed smaller field and was technically more difficult to obtain, but the quality was nearly similar to RetCam. Conclusions iPhone versions 4s and 5s can provide excellent ophthalmic macrophotography and microphotography and adequate fundus photography. We believe that iPhone imaging could be most useful in settings where expensive, complicated, and cumbersome imaging equipment is unavailable. PMID:28275604

  11. PhoneSat - The Smartphone Nanosatellite

    NASA Technical Reports Server (NTRS)

    Westley, Deborah; Yost, Bruce; Petro, Andrew

    2013-01-01

    PhoneSat 2.4, carried into space on November 19, 2013 aboard a Minotaur I rocket from the Mid-Atlantic Regional Spaceport at NASAs Wallops Flight Facility in Virginia, is the first of the PhoneSat family to use a two-way S-band radio to allow engineers to command the satellite from Earth. This mission also serves as a technology demonstration for a novel attitude determination and control system (ADCS) that establishes and stabilizes the satellites attitude relative to Earth. Unlike the earlier PhoneSats that used a Nexus One, PhoneSat 2.4 uses the Nexus S smartphone, which runs Googles Android operating system, and is made by Samsung Electronics Co., Suwon, So. Korea. The smartphone provides many of the functions needed by the satellite such as a central computer, data memory, ready-made interfaces for communications, navigation and power all pre-assembled in a rugged electronics package.

  12. Learning optics using a smart-phone

    NASA Astrophysics Data System (ADS)

    Pons, Amparo; García-Martínez, Pascuala; Barreiro, Juan C.; Moreno, Ignacio

    2014-07-01

    We propose several ideas about how to teach Optics using smart-phones. We think that the almost addictive interest of students in smart-phone technology can be useful for the benefits of learning. Moreover as all of our students are from university level, it helps that mostly all of them own a device. In this work we review many possibilities that using a smart-phone offer from the teaching point of view. We begin with a search of different apps about Optics. Then we also use the device as a sensor for implementing some experiments, we analyze accessories such as telescope and microscope lenses and finally, when the smart-phone is over, we use different parts to teach diffraction or imaging.

  13. Consistency of color representation in smart phones.

    PubMed

    Dain, Stephen J; Kwan, Benjamin; Wong, Leslie

    2016-03-01

    One of the barriers to the construction of consistent computer-based color vision tests has been the variety of monitors and computers. Consistency of color on a variety of screens has necessitated calibration of each setup individually. Color vision examination with a carefully controlled display has, as a consequence, been a laboratory rather than a clinical activity. Inevitably, smart phones have become a vehicle for color vision tests. They have the advantage that the processor and screen are associated and there are fewer models of smart phones than permutations of computers and monitors. Colorimetric consistency of display within a model may be a given. It may extend across models from the same manufacturer but is unlikely to extend between manufacturers especially where technologies vary. In this study, we measured the same set of colors in a JPEG file displayed on 11 samples of each of four models of smart phone (iPhone 4s, iPhone5, Samsung Galaxy S3, and Samsung Galaxy S4) using a Photo Research PR-730. The iPhones are white LED backlit LCD and the Samsung are OLEDs. The color gamut varies between models and comparison with sRGB space shows 61%, 85%, 117%, and 110%, respectively. The iPhones differ markedly from the Samsungs and from one another. This indicates that model-specific color lookup tables will be needed. Within each model, the primaries were quite consistent (despite the age of phone varying within each sample). The worst case in each model was the blue primary; the 95th percentile limits in the v' coordinate were ±0.008 for the iPhone 4 and ±0.004 for the other three models. The u'v' variation in white points was ±0.004 for the iPhone4 and ±0.002 for the others, although the spread of white points between models was u'v'±0.007. The differences are essentially the same for primaries at low luminance. The variation of colors intermediate between the primaries (e.g., red-purple, orange) mirror the variation in the primaries. The variation in

  14. Nickel allergy presenting as mobile phone contact dermatitis.

    PubMed

    Roberts, Hugh; Tate, Bruce

    2010-02-01

    A 39-year-old man presented with a 6-month history of a treatment-resistant facial dermatitis. The patient regularly used his mobile phone, predominantly on the left cheek. Patch testing confirmed the clinical suspicion of mobile phone contact dermatitis from nickel contained in the phone casing. Although infrequently reported, with the trend towards metallic mobile phone casings and the high incidence of nickel sensitization in the community, the incidence of mobile phone contact dermatitis is likely to increase.

  15. Author Detection on a Mobile Phone

    DTIC Science & Technology

    2011-03-01

    to miniature computers in the hands of millions of people. Communications on mobile devices encompasses more than just phone calls. Short messages...2010, up from 25 percent in 2009. [3] While the versatile and always-on communications provided by mobile devices has been a boon to society, it has...also been a powerful tool for terrorists, child predators, and other criminals. Disposable phones make nefarious communications anonymous and bad people

  16. Costly Cell Phones: The Impact of Cell Phone Rings on Academic Performance

    ERIC Educational Resources Information Center

    End, Christian M.; Worthman, Shaye; Mathews, Mary Bridget; Wetterau, Katharina

    2010-01-01

    College students participated in a study on the "psychology of note taking" during which they took notes on video content and later completed a multiple-choice test on the material. Researchers assigned 71 participants to either the ringing condition (the video was disrupted by a ringing cell phone) or the control condition (no cell phone rings…

  17. Cellular phones and risk of brain tumors.

    PubMed

    Frumkin, H; Jacobson, A; Gansler, T; Thun, M J

    2001-01-01

    As cellular telephones are a relatively new technology, we do not yet have long-term follow-up on their possible biological effects. However, the lack of ionizing radiation and the low energy level emitted from cell phones and absorbed by human tissues make it unlikely that these devices cause cancer. Moreover, several well-designed epidemiologic studies find no consistent association between cell phone use and brain cancer. It is impossible to prove that any product or exposure is absolutely safe, especially in the absence of very long-term follow-up. Accordingly, the following summary from the Food and Drug Administration Center for Devices and Radiological Health offers advice to people concerned about their risk: If there is a risk from these products--and at this point we do not know that there is--it is probably very small. But if people are concerned about avoiding even potential risks, there are simple steps they can take to do so. People who must conduct extended conversations in their cars every day could switch to a type of mobile phone that places more distance between their bodies and the source of the RF, since the exposure level drops off dramatically with distance. For example, they could switch to: a mobile phone in which the antenna is located outside the vehicle, a hand-held phone with a built-in antenna connected to a different antenna mounted on the outside of the car or built into a separate package, or a headset with a remote antenna to a mobile phone carried at the waist. Again the scientific data do not demonstrate that mobile phones are harmful. But if people are concerned about the radiofrequency energy from these products, taking the simple precautions outlined above can reduce any possible risk. In addition, people who are concerned might choose digital rather than analog telephones, since the former use lower RF levels.

  18. Modeling cell dynamics under mobile phone radiation.

    PubMed

    Minelli, Tullio Antonio; Balduzzo, Maurizio; Milone, Francesco Ferro; Nofrate, Valentina

    2007-04-01

    Perturbations by pulse-modulated microwave radiation from GSM mobile phones on neuron cell membrane gating and calcium oscillations have been suggested as a possible mechanism underlying activation of brain states and electroencephalographic epiphenomena. As the employ of UMTS phones seems to reveal other symptoms, a unified phenomenological framework is needed. In order to explain possible effects of mobile phone radiation on cell oscillations, GSM and UMTS low-frequency envelopes have been detected, recorded and used as input in cell models. Dynamical systems endowed with contiguous regular and chaotic regimes suitable to produce stochastic resonance can both account for the perturbation of the neuro-electrical activity and even for the low intensity of the signal perceived by high sensitive subjects. Neuron models of this kind can be employed as a reductionist hint for the mentioned phenomenology. The Hindmarsh-Rose model exhibits frequency enhancement and regularization phenomena induced by weak GSM and UMTS. More realistic simulations of cell membrane gating and calcium oscillations have been performed with the help of an adaptation of the Chay-Keizer dynamical system. This scheme can explain the suspected subjective sensitivity to mobile phone signals under the thermal threshold, in terms of cell calcium regularity mechanisms. Concerning the two kinds of emission, the stronger occupation of the ELF band of last generation UMTS phones is compensated by lower power emitted.

  19. [Cell phones: health risks and prevention].

    PubMed

    Talamanca, I Figà; Giliberti, C; Salerno, S

    2012-01-01

    The paper describes first of all the electromagnetic radiation of cellular phones and presents the physical parameters used to measure and evaluate the absorption of emissions of radio stations and cellular phones. It then presents selected research results of the experimental studies in vivo and in vitro which examine the biological effects of the emissions of cellular phones. The review of the epidemiologic evidence focuses in particular the epidemiologic studies on the use of cell phones and brain tumours, identifying some of the reasons of the conflicting results obtained. Studies dealing with the health risks involved in the increasing use of cellular phones by adolescents and children, more sensitive to this exposure, are also presented showing the need for special caution. The problem of hypersensitivity observed in some individuals is also briefly discussed. Finally the paper presents a summary of the main prevention measures necessary in order to reduce the risks in the framework of the "precautionary principle" including prevention policies and exposure limits in various countries.

  20. Mobile phone based SCADA for industrial automation.

    PubMed

    Ozdemir, Engin; Karacor, Mevlut

    2006-01-01

    SCADA is the acronym for "Supervisory Control And Data Acquisition." SCADA systems are widely used in industry for supervisory control and data acquisition of industrial processes. Conventional SCADA systems use PC, notebook, thin client, and PDA as a client. In this paper, a Java-enabled mobile phone has been used as a client in a sample SCADA application in order to display and supervise the position of a sample prototype crane. The paper presents an actual implementation of the on-line controlling of the prototype crane via mobile phone. The wireless communication between the mobile phone and the SCADA server is performed by means of a base station via general packet radio service (GPRS) and wireless application protocol (WAP). Test results have indicated that the mobile phone based SCADA integration using the GPRS or WAP transfer scheme could enhance the performance of the crane in a day without causing an increase in the response times of SCADA functions. The operator can visualize and modify the plant parameters using his mobile phone, without reaching the site. In this way maintenance costs are reduced and productivity is increased.

  1. Mobile phones, heat shock proteins and cancer.

    PubMed

    French, P W; Penny, R; Laurence, J A; McKenzie, D R

    2001-06-01

    There are several reports which indicate that electromagnetic radiation (such as from mobile phones) at non-thermal levels may elicit a biological effect in target cells or tissues. Whether or not these biological effects lead to adverse health effects, including cancer, is unclear. To date there is limited scientific evidence of health issues, and no mechanism by which mobile phone radiation could influence cancer development. In this paper, we develop a theoretical mechanism by which radiofrequency radiation from mobile phones could induce cancer, via the chronic activation of the heat shock response. Upregulation of heat shock proteins (Hsps) is a normal defence response to a cellular stress. However, chronic expression of Hsps is known to induce or promote oncogenesis, metastasis and/or resistance to anticancer drugs. We propose that repeated exposure to mobile phone radiation acts as a repetitive stress leading to continuous expression of Hsps in exposed cells and tissues, which in turn affects their normal regulation, and cancer results. This hypothesis provides the possibility of a direct association between mobile phone use and cancer, and thus provides an important focus for future experimentation.

  2. Flow visualization by mobile phone cameras

    NASA Astrophysics Data System (ADS)

    Cierpka, Christian; Hain, Rainer; Buchmann, Nicolas A.

    2016-06-01

    Mobile smart phones were completely changing people's communication within the last ten years. However, these devices do not only offer communication through different channels but also devices and applications for fun and recreation. In this respect, mobile phone cameras include now relatively fast (up to 240 Hz) cameras to capture high-speed videos of sport events or other fast processes. The article therefore explores the possibility to make use of this development and the wide spread availability of these cameras in the terms of velocity measurements for industrial or technical applications and fluid dynamics education in high schools and at universities. The requirements for a simplistic PIV (particle image velocimetry) system are discussed. A model experiment of a free water jet was used to prove the concept and shed some light on the achievable quality and determine bottle necks by comparing the results obtained with a mobile phone camera with data taken by a high-speed camera suited for scientific experiments.

  3. Elemental Compositions of Over 80 Cell Phones

    NASA Astrophysics Data System (ADS)

    Christian, Beverley; Romanov, Alexandre; Romanova, Irina; Turbini, Laura J.

    2014-11-01

    Over the last few years, 85 cell phones have been disassembled, ground up, dissolved, and analyzed for elemental content, mainly for information about the metals present in the phones, but also for some metalloids and nonmetals. The following list of 38 elements were detected in some or all of the phones: Be, B, Mg, Al, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Y, Nb, Pd, Ag, In, Sn, Sb, Te, Ba, Ta, W, Pt, Au, Tl, Pb, Bi, Pr, Nd, Sm, Eu, Gd, Tb, Dy, and Er. Cadmium was never detected. This paper discusses the methods used for carrying out the analysis, proposes possible sources in the telephones for the elements of interest, the reasons for the interest in most of the elements, and method repeatability.

  4. Psych-related iPhone apps.

    PubMed

    Harrison, Anthony Mark; Goozee, Rhianna

    2014-02-01

    iPhone apps are a widely utilised technology that have recently been identified as a useful medium for health research, clinical interventions and education. While some researchers have discussed advances in app technology, others promote specific apps that are not free to access. To our knowledge, no study has conducted a review of current, free iPhone apps related to psychology, psychiatry and mental health. Therefore, we conducted a pilot, web-based review exploring free iPhone apps using a replicable search strategy within the iTunes Store search function. A selection of apps were selected and subjectively assessed in terms of their usability, utility, graphics, and associated costs for the consumer. We concluded that the apps reviewed, though novel, are limited in their scope and utility. We also note a significant gap in more scientific, evidence-based app technology, and pose some pertinent ethical questions when developing future psych-related apps.

  5. Low-Cost Mobile Phone Microscopy with a Reversed Mobile Phone Camera Lens

    PubMed Central

    Fletcher, Daniel A.

    2014-01-01

    The increasing capabilities and ubiquity of mobile phones and their associated digital cameras offer the possibility of extending low-cost, portable diagnostic microscopy to underserved and low-resource areas. However, mobile phone microscopes created by adding magnifying optics to the phone's camera module have been unable to make use of the full image sensor due to the specialized design of the embedded camera lens, exacerbating the tradeoff between resolution and field of view inherent to optical systems. This tradeoff is acutely felt for diagnostic applications, where the speed and cost of image-based diagnosis is related to the area of the sample that can be viewed at sufficient resolution. Here we present a simple and low-cost approach to mobile phone microscopy that uses a reversed mobile phone camera lens added to an intact mobile phone to enable high quality imaging over a significantly larger field of view than standard microscopy. We demonstrate use of the reversed lens mobile phone microscope to identify red and white blood cells in blood smears and soil-transmitted helminth eggs in stool samples. PMID:24854188

  6. Low-cost mobile phone microscopy with a reversed mobile phone camera lens.

    PubMed

    Switz, Neil A; D'Ambrosio, Michael V; Fletcher, Daniel A

    2014-01-01

    The increasing capabilities and ubiquity of mobile phones and their associated digital cameras offer the possibility of extending low-cost, portable diagnostic microscopy to underserved and low-resource areas. However, mobile phone microscopes created by adding magnifying optics to the phone's camera module have been unable to make use of the full image sensor due to the specialized design of the embedded camera lens, exacerbating the tradeoff between resolution and field of view inherent to optical systems. This tradeoff is acutely felt for diagnostic applications, where the speed and cost of image-based diagnosis is related to the area of the sample that can be viewed at sufficient resolution. Here we present a simple and low-cost approach to mobile phone microscopy that uses a reversed mobile phone camera lens added to an intact mobile phone to enable high quality imaging over a significantly larger field of view than standard microscopy. We demonstrate use of the reversed lens mobile phone microscope to identify red and white blood cells in blood smears and soil-transmitted helminth eggs in stool samples.

  7. Cell phones in telehealth and otolaryngology.

    PubMed

    Kenyon, Jessica I; Poropatich, Ronald; Holtel, Michael R

    2011-12-01

    The worldwide prevalence of mobile phones makes them a powerful platform for providing individualized health care delivered at the patient's convenience. They have the potential to extend the health care interaction from a brief office visit to a continuous monitoring via body sensors of either a specific healthcare parameter or with multiple sensors in wireless body area networks. Remote data collection by way of mobile phones in underserved areas allows for better management of public health and provides the opportunity for timely intervention. Published data showing benefits specific to otolaryngology are primarily in remote consultation, body sensors specific to balance, and appointment compliance.

  8. [Mobile phone based wireless microscopy imaging technology].

    PubMed

    Yuan, Yucheng; Liu, Jing

    2011-03-01

    This article proposes a new device named "Wireless Cellscope" that combining mobile phone and optical microscope together. The established wireless microscope platform consists of mobile phone, network monitor, miniaturized microscope or high resolution microscope etc. A series of conceptual experiments were performed on microscopic observation of ordinary objects and mice tumor tissue slices. It was demonstrated that, the new method could acquire microscopy images via a wireless way, which is spatially independent. With small size and low cost, the device thus developed has rather wide applicability in non-disturbing investigation of cell/tissue culture and long distance observation of dangerous biological sample etc.

  9. Comparative studies of perceived vibration strength for commercial mobile phones.

    PubMed

    Lee, Heow Pueh; Lim, Siak Piang

    2014-05-01

    A mobile phone, also known as cell phone or hand phone, is among the most popular electrical devices used by people all over the world. The present study examines the vibration perception of mobile phones by co-relating the relevant design parameters such as excitation frequency, and size and mass of mobile phones to the vibration perception survey by volunteers. Five popular commercially available mobile phone models were tested. The main findings for the perception surveys were that higher vibration frequency and amplitude of the peak acceleration would result in stronger vibration perception of the mobile phones. A larger contact surface area with the palms and figures, higher peak acceleration and the associated larger peak inertia force may be the main factors for the relatively higher vibration perception. The future design for the vibration alert of the mobile phones is likely to follow this trend.

  10. Analysing Harmonic Motions with an iPhone's Magnetometer

    ERIC Educational Resources Information Center

    Yavuz, Ahmet; Temiz, Burak Kagan

    2016-01-01

    In this paper, we propose an experiment for analysing harmonic motion using an iPhone's (or iPad's) magnetometer. This experiment consists of the detection of magnetic field variations obtained from an iPhone's magnetometer sensor. A graph of harmonic motion is directly displayed on the iPhone's screen using the "Sensor Kinetics"…

  11. Twenty Ideas for Using Mobile Phones in the Language Classroom

    ERIC Educational Resources Information Center

    Reinders, Hayo

    2010-01-01

    These days it seems mobile phones are used everywhere by everyone, which leads to the obvious question: How can mobile phone technology support learning in the second language classroom? The answer is "in a number of ways" because mobile phones come with ever-increasing functions that most students are adept at using. In this article the author…

  12. Cell Phones in the Classroom: Preservice Teachers' Perceptions

    ERIC Educational Resources Information Center

    Thomas, Kevin; O'Bannon, Blanche

    2013-01-01

    This study employed a survey to examine the perceptions of 92 preservice teachers enrolled at a small Midwestern liberal arts university regarding their support of the use of cell phones in the classroom, the benefits of specific cell phone features for school-related work, and the instructional benefits of and barriers to using cell phones in the…

  13. Teaching the Fundamentals of Cell Phones and Wireless Communications

    ERIC Educational Resources Information Center

    Davids, Mark; Forrest, Rick; Pata, Don

    2010-01-01

    Wireless communications are ubiquitous. Students and teachers use iPhones[R], BlackBerrys[R], and other smart phones at home and at work. More than 275 million Americans had cell phones in June of 2009 and expanded access to broadband is predicted this year. Despite the plethora of users, most students and teachers do not understand "how they…

  14. Scaffolding Java Programming on a Mobile Phone for Novice Learners

    ERIC Educational Resources Information Center

    Mbogo, Chao; Blake, Edwin; Suleman, Hussein

    2015-01-01

    The ubiquity of mobile phones provides an opportunity to use them as a resource for construction of programs beyond the classroom. However, limitations of mobile phones impede their use as typical programming environments. This research proposes that programming environments on mobile phones should include scaffolding techniques specifically…

  15. From Toy to Tool: Audioblogging with Cell Phones

    ERIC Educational Resources Information Center

    Kolb, Liz

    2006-01-01

    Educators often reject cell phones in the classroom, considering them destructive and distractive "toys." As a former technology coordinator, the author used to think cell phones were harmful for the classroom environment. Over time, she has come to realize that cell phones are part of the students' everyday existence. Today, students use cell…

  16. Making Connections: Using Mobile Phones as a Museum Tool

    ERIC Educational Resources Information Center

    Manabe, Makoto; Lydens, Lois

    2007-01-01

    Mobile phones have been steadily gaining appreciation among the museum community as a versatile tool. The new generation of mobile phones allows museums to imagine a whole new range of applications, including audiovisual personal tours and live-feed broadcasting. Personal tours using mobile phones are appealing to museum educators since patrons…

  17. Student Impressions of Academic Cell Phone Use in the Classroom

    ERIC Educational Resources Information Center

    Tessier, Jack

    2013-01-01

    Cell phones have become ubiquitous in society, but they are typically seen as a problem in the classroom. This study was designed to assess the perspective of students regarding the use of cell phones as academic tools in the classroom. The author encouraged students to use their cell phones in an environmental issues course to find data and other…

  18. Cell Phones in the Classroom: Are We Dialing up Disaster?

    ERIC Educational Resources Information Center

    Engel, George; Green, Tim

    2011-01-01

    Over the last decade there has been a rapid diffusion of cellular technology. Though cell phone use began as a business tool, it has now become part of popular culture. Because of the near ubiquitous presence of cell phone technology among teens in the United States, schools are beginning to explore the use of cell phones as a learning tool. This…

  19. Commonalities in Pedagogy Situating Cell Phone Use in the Classroom

    ERIC Educational Resources Information Center

    Abend, Laurie Lafer

    2013-01-01

    Technology has become embedded in all aspects of students' lives as they increasingly rely on mobile technology devices such as cell phones to access and share information. Cell phones function as portable, affordable, and ubiquitous mini-computers, yet few teachers have leveraged the benefits of cell phone technology for teaching and learning…

  20. Bacterial contamination of anaesthetists' hands by personal mobile phone and fixed phone use in the operating theatre.

    PubMed

    Jeske, H-C; Tiefenthaler, W; Hohlrieder, M; Hinterberger, G; Benzer, A

    2007-09-01

    Following hand disinfection, 40 anaesthetists working in the operating room (OR) were asked to use their personal in-hospital mobile phone for a short phone call. After use of the cell phone, bacterial contamination of the physicians' hands was found in 38/40 physicians (4/40 with human pathogen bacteria). After repeating the same investigation with fixed phones in the OR anteroom 33/40 physicians showed bacterial contamination (4/40 with human pathogen bacteria). The benefit of using mobile phones in the OR should be weighed against the risk for unperceived contamination. The use of mobile phones may have more serious hygiene consequences, because, unlike fixed phones, mobile phones are often used in the OR close to the patient.

  1. Audio Frequency Analysis in Mobile Phones

    ERIC Educational Resources Information Center

    Aguilar, Horacio Munguía

    2016-01-01

    A new experiment using mobile phones is proposed in which its audio frequency response is analyzed using the audio port for inputting external signal and getting a measurable output. This experiment shows how the limited audio bandwidth used in mobile telephony is the main cause of the poor speech quality in this service. A brief discussion is…

  2. Mobile phone exposure and spatial memory.

    PubMed

    Wiholm, Clairy; Lowden, Arne; Kuster, Niels; Hillert, Lena; Arnetz, Bengt B; Akerstedt, Torbjörn; Moffat, Scott D

    2009-01-01

    Radiofrequency (RF) emission during mobile phone use has been suggested to impair cognitive functions, that is, working memory. This study investigated the effects of a 2 1/2 h RF exposure (884 MHz) on spatial memory and learning, using a double-blind repeated measures design. The exposure was designed to mimic that experienced during a real-life mobile phone conversation. The design maximized the exposure to the left hemisphere. The average exposure was peak spatial specific absorption rate (psSAR10g) of 1.4 W/kg. The primary outcome measure was a "virtual" spatial navigation task modeled after the commonly used and validated Morris Water Maze. The distance traveled on each trial and the amount of improvement across trials (i.e., learning) were used as dependent variables. The participants were daily mobile phone users, with and without symptoms attributed to regular mobile phone use. Results revealed a main effect of RF exposure and a significant RF exposure by group effect on distance traveled during the trials. The symptomatic group improved their performance during RF exposure while there was no such effect in the non-symptomatic group. Until this new finding is further investigated, we can only speculate about the cause.

  3. Cell phones and CHWs: a transformational marriage?

    PubMed

    2014-02-01

    Mobile phones can be transformative for community health workers (CHWs) in enhancing their influence and status and helping to solve practical problems. While formal intervention research can help advance mHealth application, most progress will come through a "diffusion of innovation" process.

  4. The American College Student Cell Phone Survey

    ERIC Educational Resources Information Center

    Emanuel, Richard C.

    2013-01-01

    This article reports on a study of cell phone use among college students. This group is considered particularly important because college students tend to be among the first to try new technology, are the group most likely to innovate new ways of using existing technology, and are most vocal about what they need and/or want to see changed…

  5. From Cell Phone Skeptic to Evangelist

    ERIC Educational Resources Information Center

    Pascopella, Angela

    2009-01-01

    Liz Kolb started her education career as a teacher of middle and high school social studies in Wyoming City Schools in Cincinnati. She was also a teacher and technology coordinator at Grandview Heights City Schools in Columbus, where she adamantly opposed cell phones in school until she had an "ah-ha" moment. She then founded the Web site Cell…

  6. Wi-Fi Versus Cell Phone Service

    ERIC Educational Resources Information Center

    Roberts, Gary

    2006-01-01

    Regardless of whether cell phones remain the dominant platform or Wi-Fi becomes the prevalent platform, there are some things that libraries can do to improve patron service in light of evolving expectations, behaviors, and tools. People today are more nomadic, which leads to the very real possibility of having to deliver content not just to the…

  7. Exploring the mobility of mobile phone users

    NASA Astrophysics Data System (ADS)

    Csáji, Balázs Cs.; Browet, Arnaud; Traag, V. A.; Delvenne, Jean-Charles; Huens, Etienne; Van Dooren, Paul; Smoreda, Zbigniew; Blondel, Vincent D.

    2013-03-01

    Mobile phone datasets allow for the analysis of human behavior on an unprecedented scale. The social network, temporal dynamics and mobile behavior of mobile phone users have often been analyzed independently from each other using mobile phone datasets. In this article, we explore the connections between various features of human behavior extracted from a large mobile phone dataset. Our observations are based on the analysis of communication data of 100,000 anonymized and randomly chosen individuals in a dataset of communications in Portugal. We show that clustering and principal component analysis allow for a significant dimension reduction with limited loss of information. The most important features are related to geographical location. In particular, we observe that most people spend most of their time at only a few locations. With the help of clustering methods, we then robustly identify home and office locations and compare the results with official census data. Finally, we analyze the geographic spread of users’ frequent locations and show that commuting distances can be reasonably well explained by a gravity model.

  8. Multidimensional Human Dynamics in Mobile Phone Communications

    PubMed Central

    Quadri, Christian; Zignani, Matteo; Capra, Lorenzo; Gaito, Sabrina; Rossi, Gian Paolo

    2014-01-01

    In today's technology-assisted society, social interactions may be expressed through a variety of techno-communication channels, including online social networks, email and mobile phones (calls, text messages). Consequently, a clear grasp of human behavior through the diverse communication media is considered a key factor in understanding the formation of the today's information society. So far, all previous research on user communication behavior has focused on a sole communication activity. In this paper we move forward another step on this research path by performing a multidimensional study of human sociality as an expression of the use of mobile phones. The paper focuses on user temporal communication behavior in the interplay between the two complementary communication media, text messages and phone calls, that represent the bi-dimensional scenario of analysis. Our study provides a theoretical framework for analyzing multidimensional bursts as the most general burst category, that includes one-dimensional bursts as the simplest case, and offers empirical evidence of their nature by following the combined phone call/text message communication patterns of approximately one million people over three-month period. This quantitative approach enables the design of a generative model rooted in the three most significant features of the multidimensional burst - the number of dimensions, prevalence and interleaving degree - able to reproduce the main media usage attitude. The other findings of the paper include a novel multidimensional burst detection algorithm and an insight analysis of the human media selection process. PMID:25068479

  9. Teaching the Benefits of Smart Phone Technology to Blind Consumers: Exploring the Potential of the iPhone

    ERIC Educational Resources Information Center

    Wong, Meng Ee; Tan, Stacey S. K.

    2012-01-01

    Among the smart phones, the iPhone has emerged as one of the more popular smart phones. A feature that makes the iPhone popular to the user is the growing number of apps available through The App Store. Among the many apps, a number are designed for people with visual impairments. Some are free of charge, while others require payment. Compared to…

  10. Mobile Phone Radiation: Physiological & Pathophysiologcal Considerations.

    PubMed

    K Sri, Nageswari

    2015-01-01

    It is documented that electromagnetic emissions from mobile phones can interfere with brain's signal processing activity due to their oscillatory similitude to the inherent rhythms of the brain, akin to "electromagnetic interference" observed while using mobile phones in aeroplanes. At high power density levels, thermal effects occur, some of which can be attributed to heat induced stress mechanisms. The less understood non-thermal effects occur at low radio frequency/microwave power density levels and are not accompanied by any body temperature rise. The safety standards set by international agencies are based on thermal effects. For the mobile phones, ICNIRP 1998 guidelines restrict spatial peak of microwave exposure to 2 W/Kg SAR values averaged over 10 g of tissue for 6 minutes. Some of the reported electromagnetic radiation (EMR) induced adverse effects are brain tumours, male infertility and immune dysfunction with increased susceptibility to infections. Pathophysiological mechanisms of interaction of EMR at plasma membrane are calcium efflux from cell membranes, increased expression of stress proteins, influence on channels/gap junctions in cell membrane, overproduction of reactive oxygen species, ornithine decarboxylase activation, reduction in melatonin levels, decrease in protein kinase C activity, damage to DNA and change in gene expression in brain cells and altered blood-brain barrier. There are equal number of conflicting reports in literature regarding EMR exposure and brain tumours. A comprehensive review concludes "overall the studies published to date do not demonstrate an increased risk within approximately 10 years of use for any tumour of the brain or any other head tumour." Another review summarises that there is "enough data to convince that long-term exposure to low intensity EMR below the ICNIRP guidelines can promote cancer development". However the time limit for exposure has been suggested as more than 10 years. For conducting

  11. PhoneSat: Ground Testing of a Phone-Based Prototype Bus

    NASA Technical Reports Server (NTRS)

    Felix, Carmen; Howard, Benjamin; Reyes, Matthew; Snarskiy, Fedor; Hickman, Ryan; Boshuizen, Christopher; Marshall, William

    2010-01-01

    Most of the key capabilities that are requisite of a satellite bus are housed in today's smart phones. PhoneSat refers to an initiative to build a ground-based prototype vehicle that could all the basic functionality of a satellite, including attitude control, using a smart Phone as its central hardware. All components used were also low cost Commercial off the Shelf (COTS). In summer 2009, an initial prototype was created using the LEGO Mindstorm toolkit demonstrating simple attitude control. Here we report on a follow up initiative to design, build and test a vehicle based on the Google s smart phone Nexus One. The report includes results from initial thermal-vacuum chamber tests and low altitude sub-orbital rocket flights which show that, at least for short durations, the Nexus One phone is able to withstand key aspects of the space environment without failure. We compare the sensor data from the Phone's accelerometers and magnetometers with that of an external microelectronic inertial measurement unit.

  12. Cell phone usage and erectile function

    PubMed Central

    Patzak, Johanna; Fischereder, Katja; Pummer, Karl; Shamloul, Rany

    2013-01-01

    Introduction The objective of this pilot study was to report our experience concerning the effects of cell phone usage on erectile function (EF) in men. Material and Methods We recruited 20 consecutive men complaining of erectile dysfunction (ED) for at least six months (Group A), and another group of 10 healthy men with no complaints of ED (Group B). Anamnesis, basic laboratory investigations, and clinical examinations were performed. All men completed the German version of the Sexual Health Inventory for Men (SHIM) for evaluation of the International Index of Erectile Function (IIEF), as well as another questionnaire designed by our clinicians that assessed cell phone usage habits. Results There was no significant difference between both groups regarding age, weight, height, and total testosterone (Table 1). The SHIM scores of Group A were significantly lower than that of Group B, 11.2 ±5 and 24.2 ±2.3, respectively. Total time spent talking on the cell phone per week was not significantly higher in Group A over B, 17.6 ±11.1 vs. 12.5 ±7 hours. Men with ED were found to carry their ‘switched on’ cell phones for a significantly longer time than those without ED, 4.4 ±3.6 vs. 1.8 ±1 hours per day. Conclusions We found a potential correlation with cell phone usage and a negative impact on EF. Further large–scale studies confirming our initial data and exploring the mechanisms involved in this phenomenon are recommended. PMID:24578997

  13. Mobile Phone Use, Emotion Regulation, and Well-Being.

    PubMed

    Hoffner, Cynthia A; Lee, Sangmi

    2015-07-01

    This study examined the use of mobile phones to regulate negative emotions, considering both the role of different aspects of phone use and individual differences in emotion regulation strategies. A total of 287 young adult smartphone users completed an online survey that addressed use of mobile phones for negative emotion regulation. They responded to a phone loss scenario by rating how much they would miss various uses/functions of the phone (which could be involved in emotion regulation). Habitual use of reappraisal to regulate emotion was associated with missing both interpersonal contact and social support, but not access to entertainment/information. In contrast, habitual use of emotion suppression was associated only with missing entertainment/information content. Regulating negative emotions via mobile phone was associated with missing all three uses/functions of the phone, but perception that the phone was effective in remediating negative emotion was associated only with missing social support. Well-being was related to greater use and perceived effectiveness of the mobile phone for emotion regulation. Overall, this study demonstrates that mobile phones can yield psychological benefits, depending on how they are used. Findings suggest that using the phone for social support is most likely to lead to effective remediation of negative emotion. Interpretations and implications of the findings are discussed.

  14. [Advances in the application of smart phones in modern medicine].

    PubMed

    Wang, Lin; Hu, Jie; Li, Fei; Wei, Huilin; Li, Ying; Lu, Tianjian; Wang, Shuqi; Xu, Feng

    2014-02-01

    Since smart phones have been developed, significant advances in the function of mobile phone due to the development of software, hardware and accessories have been reached. Till now, smart phones have been engaged in daily life with an increasing impact. As a new medical model, mobile phone medicine is emerging and has found wide spread applications in medicine, especially in diagnosing, monitoring and screening various diseases. In addition, mo bile phone medical application shows great potential trend to improve healthcare in resource-limited regions due to its advantageous features of portability and information communication capability. Nowadays, the scientific and technological issues related to mobile phone medicine have attracted worldwide attention. In this review, we summarize state-of-the-art advances of mobile phone medicine with focus on its diagnostics applications in order to expand the fields of their applications and promote healthcare informatization.

  15. [Potential selection bias in telephone surveys: landline and mobile phones].

    PubMed

    Garcia-Continente, Xavier; Pérez-Giménez, Anna; López, María José; Nebot, Manel

    2014-01-01

    The increasing use of mobile phones in the last decade has decreased landline telephone coverage in Spanish households. This study aimed to analyze sociodemographic characteristics and health indicators by type of telephone service (mobile phone vs. landline or landline and mobile phone). Two telephone surveys were conducted in Spanish samples (February 2010 and February 2011). Multivariate logistic regression analyses were performed to analyze differences in the main sociodemographic characteristics and health indicators according to the type of telephone service available in Spanish households. We obtained 2027 valid responses (1627 landline telephones and 400 mobile phones). Persons contacted through a mobile phone were more likely to be a foreigner, to belong to the manual social class, to have a lower educational level, and to be a smoker than those contacted through a landline telephone. The profile of the population that has only a mobile phone differs from that with a landline telephone. Therefore, telephone surveys that exclude mobile phones could show a selection bias.

  16. Understanding energy consumption of sensor enabled applications on mobile phones.

    PubMed

    Crk, Igor; Albinali, Fahd; Gniady, Chris; Hartman, John

    2009-01-01

    Recent research in ubiquitous and mobile computing uses mobile phones and wearable accelerometers to monitor individuals' physical activities for personalized and proactive health care. The goal of this project is to measure and reduce the energy demand placed on mobile phones that monitor individuals' physical activities for extended periods of time with limited access to battery recharging and mobile phone reception. Many issues must be addressed before mobile phones become a viable platform for remote health monitoring, including: security, reliability, privacy, and, most importantly, energy. Mobile phones are battery-operated, making energy a critical resource that must be carefully managed to ensure the longest running time before the battery is depleted. In a sense, all other issues are secondary, since the mobile phone will simply not function without energy. In this project, we therefore focus on understanding the energy consumption of a mobile phone that runs MIT wockets, physical activity monitoring applications, and consider ways to reduce its energy consumption.

  17. Mobile phones and children: is precaution warranted?

    PubMed

    van Rongen, Eric; Roubos, Eric W; van Aernsbergen, Lodewijk M; Brussaard, Gert; Havenaar, Johan; Koops, Frans B J; van Leeuwen, Floor E; Leonhard, Helmut K; van Rhoon, Gerard C; Swaen, Gerard M H; van de Weerdt, Rik H J; Zwamborn, A Peter M

    2004-02-01

    Are there health related arguments to recommend that children limit their use of mobile telephones? The International Expert Group on Mobile Phones from the UK concluded so, but did not come up with convincing scientific data to back this statement. The Health Council of the Netherlands approached the problem by considering whether developmental arguments might be found, i.e., asking if there reason to believe that the heads of children are more susceptible to the electromagnetic fields emitted by mobile telephones than those of adults. It concluded that no major changes in head development occur after the second year of life that might point at a difference in electromagnetic susceptibility between children and adults. The Health Council therefore sees no reason to recommend limiting the use of mobile phones by children.

  18. Healthcare via cell phones: a systematic review.

    PubMed

    Krishna, Santosh; Boren, Suzanne Austin; Balas, E Andrew

    2009-04-01

    Regular care and informational support are helpful in improving disease-related health outcomes. Communication technologies can help in providing such care and support. The purpose of this study was to evaluate the empirical evidence related to the role of cell phones and text messaging interventions in improving health outcomes and processes of care. Scientific literature was searched to identify controlled studies evaluating cell phone voice and text message interventions to provide care and disease management support. Searches identified 25 studies that evaluated cell phone voice and text messaging interventions, with 20 randomized controlled trials and 5 controlled studies. Nineteen studies assessed outcomes of care and six assessed processes of care. Selected studies included 38,060 participants with 10,374 adults and 27,686 children. They covered 12 clinical areas and took place in 13 countries. Frequency of message delivery ranged from 5 times per day for diabetes and smoking cessation support to once a week for advice on how to overcome barriers and maintain regular physical activity. Significant improvements were noted in compliance with medicine taking, asthma symptoms, HbA1C, stress levels, smoking quit rates, and self-efficacy. Process improvements were reported in lower failed appointments, quicker diagnosis and treatment, and improved teaching and training. Cost per text message was provided by two studies. The findings that enhancing standard care with reminders, disease monitoring and management, and education through cell phone voice and short message service can help improve health outcomes and care processes have implications for both patients and providers.

  19. Lifestyle chemistries from phones for individual profiling.

    PubMed

    Bouslimani, Amina; Melnik, Alexey V; Xu, Zhenjiang; Amir, Amnon; da Silva, Ricardo R; Wang, Mingxun; Bandeira, Nuno; Alexandrov, Theodore; Knight, Rob; Dorrestein, Pieter C

    2016-11-29

    Imagine a scenario where personal belongings such as pens, keys, phones, or handbags are found at an investigative site. It is often valuable to the investigative team that is trying to trace back the belongings to an individual to understand their personal habits, even when DNA evidence is also available. Here, we develop an approach to translate chemistries recovered from personal objects such as phones into a lifestyle sketch of the owner, using mass spectrometry and informatics approaches. Our results show that phones' chemistries reflect a personalized lifestyle profile. The collective repertoire of molecules found on these objects provides a sketch of the lifestyle of an individual by highlighting the type of hygiene/beauty products the person uses, diet, medical status, and even the location where this person may have been. These findings introduce an additional form of trace evidence from skin-associated lifestyle chemicals found on personal belongings. Such information could help a criminal investigator narrowing down the owner of an object found at a crime scene, such as a suspect or missing person.

  20. [Cellular phones and cancer: current status].

    PubMed

    Colonna, Anne

    2005-07-01

    Evaluation of the impact of new technologies on the human body is essential in order to impose regulations to limit health risks. The appearance and evolution of cellular phones have been one of the fastest in the history of innovation. Research reported worldwide has tried to evaluate any potential link between adverse health effects and the mobile phone and its broadcasting stations. This article gives an overview of current research knowledge on the impact of radiofrequency waves on health. Epidemiologic, cellular and animal studies have been carried out, but none of them have reached definitive conclusions. Although some biological effects on cell culture have been observed, their link with human cancer development is far from established. Most of the animal studies show negative results. Epidemiologic studies lack a sufficient perspective to be able to evaluate the effect of evolving technologies used today. High levels of concern by the public have urged mobile phone operators, manufacturers and governmental authorities to finance a number of scientific projects aimed at defining adapted and effective regulations.

  1. Does chronic exposure to mobile phones affect cognition?

    PubMed Central

    Mohan, Mamta; Khaliq, Farah; Panwar, Aprajita; Vaney, Neelam

    2016-01-01

    Summary Mobile phones form an integral part of our modern lifestyle. Following the drastic rise in mobile phone use in recent years, it has become important to study its potential public health impact. Amongst the various mobile phone health hazards, the most alarming is the possible effect on the brain. The aim of the present study was to explore whether chronic exposure to mobile phones affects cognition. Ninety subjects aged 17–25 years with normal hearing were recruited for the study and divided into three groups according to their duration of mobile phone use. No significant differences in N100, P200, N200, P300 latencies or N2-P300 amplitude were observed. Our results suggest that chronic mobile phone exposure does not have detrimental effects on cognition. PMID:27027894

  2. Does chronic exposure to mobile phones affect cognition?

    PubMed

    Mohan, Mamta; Khaliq, Farah; Panwar, Aprajita; Vaney, Neelam

    2016-01-01

    Mobile phones form an integral part of our modern lifestyle. Following the drastic rise in mobile phone use in recent years, it has become important to study its potential public health impact. Amongst the various mobile phone health hazards, the most alarming is the possible effect on the brain. The aim of the present study was to explore whether chronic exposure to mobile phones affects cognition. Ninety subjects aged 17-25 years with normal hearing were recruited for the study and divided into three groups according to their duration of mobile phone use. No significant differences in N100, P200, N200, P300 latencies or N2-P300 amplitude were observed. Our results suggest that chronic mobile phone exposure does not have detrimental effects on cognition.

  3. Reducing juvenile delinquency with automated cell phone calls.

    PubMed

    Burraston, Bert O; Bahr, Stephen J; Cherrington, David J

    2014-05-01

    Using a sample of 70 juvenile probationers (39 treatment and 31 controls), we evaluated the effectiveness of a rehabilitation program that combined cognitive-behavioral training and automated phone calls. The cognitive-behavioral training contained six 90-min sessions, one per week, and the phone calls occurred twice per day for the year following treatment. Recidivism was measured by whether they were rearrested and the total number of rearrests during the 1st year. To test the impact of the phone calls, those who received phone calls were divided into high and low groups depending on whether they answered more or less than half of their phone calls. Those who completed the class and answered at least half of their phone calls were less likely to have been arrested and had fewer total arrests.

  4. The effect of cell phones on human health

    NASA Astrophysics Data System (ADS)

    Abu-Isbeih, Ibrahim N.; Saad, Dina

    2011-10-01

    The effect of cell phone radiation on human health is the subject of recent interest and study, as a result of the enormous increase in cell phone usage throughout the world. Cell phones use electromagnetic radiation in the microwave range, which some believe may be harmful to human health. Other digital wireless systems, such as data communication networks, produce similar radiation. The objective of this survey is to review the effects of cell phones on human health: A large body of research exists, both epidemiological and experimental, in non-human animals and in humans, of which the majority shows no definite causative relationship between exposure to cell phones and harmful biological effects in humans. This is often paraphrased simply as the balance of evidence showing no harm to humans from cell phones, although a significant number of individual studies do suggest such a relationship, or are inconclusive.

  5. Cordless telephone use: implications for mobile phone research.

    PubMed

    Redmayne, Mary; Inyang, Imo; Dimitriadis, Christina; Benke, Geza; Abramson, Michael J

    2010-04-01

    Cordless and mobile (cellular) telephone use has increased substantially in recent years causing concerns about possible health effects. This has led to much epidemiological research, but the usual focus is on mobile telephone radiofrequency (RF) exposure only despite cordless RF being very similar. Access to and use of cordless phones were included in the Mobile Radiofrequency Phone Exposed Users Study (MoRPhEUS) of 317 Year 7 students recruited from Melbourne, Australia. Participants completed an exposure questionnaire-87% had a cordless phone at home and 77% owned a mobile phone. There was a statistically significant positive relationship (r = 0.38, p < 0.01) between cordless and mobile phone use. Taken together, this increases total RF exposure and its ratio in high-to-low mobile users. Therefore, the design and analysis of future epidemiological telecommunication studies need to assess cordless phone exposure to accurately evaluate total RF telephone exposure effects.

  6. Recycled Cell Phones - A Treasure Trove of Valuable Metals

    USGS Publications Warehouse

    Sullivan, Daniel E.

    2006-01-01

    This U.S. Geological Survey (USGS) Fact Sheet examines the potential value of recycling the metals found in obsolete cell phones. Cell phones seem ubiquitous in the United States and commonplace throughout most of the world. There were approximately 1 billion cell phones in use worldwide in 2002. In the United States, the number of cell phone subscribers increased from 340,000 in 1985 to 180 million in 2004. Worldwide, cell phone sales have increased from slightly more than 100 million units per year in 1997 to an estimated 779 million units per year in 2005. Cell phone sales are projected to exceed 1 billion units per year in 2009, with an estimated 2.6 billion cell phones in use by the end of that year. The U.S. Environmental Protection Agency estimated that, by 2005, as many as 130 million cell phones would be retired annually in the United States. The nonprofit organization INFORM, Inc., anticipated that, by 2005, a total of 500 million obsolete cell phones would have accumulated in consumers' desk drawers, store rooms, or other storage, awaiting disposal. Typically, cell phones are used for only 1 1/2 years before being replaced. Less than 1 percent of the millions of cell phones retired and discarded annually are recycled. When large numbers of cell phones become obsolete, large quantities of valuable metals end up either in storage or in landfills. The amount of metals potentially recoverable would make a significant addition to total metals recovered from recycling in the United States and would supplement virgin metals derived from mining.

  7. Entity Recognition Via Multimodal Sensor Fusion With Smart Phones

    DTIC Science & Technology

    2015-03-26

    smart phone, it will include a chipset to access a communications network as well as the ability to connect to public and private local wireless...ENTITY RECOGNITION VIA MULTIMODAL SENSOR FUSION WITH SMART PHONES THESIS John E. Nagy, Capt, USAF AFIT-ENG-MS-15-M-023 DEPARTMENT OF THE AIR FORCE...subject to copyright protection in the United States. AFIT-ENG-MS-15-M-023 ENTITY RECOGNITION VIA MULTIMODAL SENSOR FUSION WITH SMART PHONES THESIS

  8. [Impact of cell phone radiation on male reproduction].

    PubMed

    Kang, Ning; Shang, Xue-Jun; Huang, Yu-Feng

    2010-11-01

    With the popularized use cell phones, more and more concern has been aroused over the effects of their radiation on human health, particularly on male reproduction. Cell phone radiation may cause structural and functional injuries of the testis, alteration of semen parameters, reduction of epididymal sperm concentration and decline of male fertility. This article presents an overview on the impact of cell phone radiation on male reproduction.

  9. The Mobile Phone Affinity Scale: Enhancement and Refinement

    PubMed Central

    Rosen, Rochelle K

    2016-01-01

    Background Existing instruments that assess individuals’ relationships with mobile phones tend to focus on negative constructs such as addiction or dependence, and appear to assume that high mobile phone use reflects pathology. Mobile phones can be beneficial for health behavior change, disease management, work productivity, and social connections, so there is a need for an instrument that provides a more balanced assessment of the various aspects of individuals’ relationships with mobile phones. Objective The purpose of this research was to develop, revise, and validate the Mobile Phone Affinity Scale, a multi-scale instrument designed to assess key factors associated with mobile phone use. Methods Participants (N=1058, mean age 33) were recruited from Amazon Mechanical Turk between March and April of 2016 to complete a survey that assessed participants’ mobile phone attitudes and use, anxious and depressive symptoms, and resilience. Results Confirmatory factor analysis supported a 6-factor model. The final measure consisted of 24 items, with 4 items on each of 6 factors: Connectedness, Productivity, Empowerment, Anxious Attachment, Addiction, and Continuous Use. The subscales demonstrated strong internal consistency (Cronbach alpha range=0.76-0.88, mean 0.83), and high item factor loadings (range=0.57-0.87, mean 0.75). Tests for validity further demonstrated support for the individual subscales. Conclusions Mobile phone affinity may have an important impact in the development and effectiveness of mobile health interventions, and continued research is needed to assess its predictive ability in health behavior change interventions delivered via mobile phones. PMID:27979792

  10. Call-related factors influencing output power from mobile phones.

    PubMed

    Hillert, Lena; Ahlbom, Anders; Neasham, David; Feychting, Maria; Järup, Lars; Navin, Roshan; Elliott, Paul

    2006-11-01

    Mobile phone use is increasing but there is also concern for adverse health effects. Well-designed prospective studies to assess several health outcomes are required. In designing a study of mobile phone use, it is important to assess which factors need to be considered in classifying the exposure to radiofrequency fields (RF). A pilot study was performed in Sweden and in the UK 2002 to 2003 to test the feasibility of recruiting a cohort of mobile phone users from a random population sample and from mobile phone subscription lists for a prospective study. As one part of this pilot study, different factors were evaluated regarding possible influence on the output power of the phones. By local switch logging, information on calls made from predefined subscriptions or dedicated handsets were obtained and the output power of phones during calls made indoors and outdoors, in moving and stationary mode, and in rural as well in urban areas were compared. In this experiment, calls were either 1, 1.5 or 5 min long. The results showed that high mobile phone output power is more frequent in rural areas whereas the other factors (length of call, moving/stationary, indoor/outdoor) were of less importance. Urban and rural area should be considered in an exposure index for classification of the exposure to RF from mobile phones and may be assessed by first base station during mobile phone calls or, if this information is not available, possibly by using home address as a proxy.

  11. Mobile phone types and SAR characteristics of the human brain

    NASA Astrophysics Data System (ADS)

    Lee, Ae-Kyoung; Hong, Seon-Eui; Kwon, Jong-Hwa; Choi, Hyung-Do; Cardis, Elisabeth

    2017-04-01

    Mobile phones differ in terms of their operating frequency, outer shape, and form and location of the antennae, all of which affect the spatial distributions of their electromagnetic field and the level of electromagnetic absorption in the human head or brain. For this paper, the specific absorption rate (SAR) was calculated for four anatomical head models at different ages using 11 numerical phone models of different shapes and antenna configurations. The 11 models represent phone types accounting for around 86% of the approximately 1400 commercial phone models released into the Korean market since 2002. Seven of the phone models selected have an internal dual-band antenna, and the remaining four possess an external antenna. Each model was intended to generate an average absorption level equivalent to that of the same type of commercial phone model operating at the maximum available output power. The 1 g peak spatial SAR and ipsilateral and contralateral brain-averaged SARs were reported for all 11 phone models. The effects of the phone type, phone position, operating frequency, and age of head models on the brain SAR were comprehensively determined.

  12. Mobile phone types and SAR characteristics of the human brain.

    PubMed

    Lee, Ae-Kyoung; Hong, Seon-Eui; Kwon, Jong-Hwa; Choi, Hyung-Do; Cardis, Elisabeth

    2017-04-07

    Mobile phones differ in terms of their operating frequency, outer shape, and form and location of the antennae, all of which affect the spatial distributions of their electromagnetic field and the level of electromagnetic absorption in the human head or brain. For this paper, the specific absorption rate (SAR) was calculated for four anatomical head models at different ages using 11 numerical phone models of different shapes and antenna configurations. The 11 models represent phone types accounting for around 86% of the approximately 1400 commercial phone models released into the Korean market since 2002. Seven of the phone models selected have an internal dual-band antenna, and the remaining four possess an external antenna. Each model was intended to generate an average absorption level equivalent to that of the same type of commercial phone model operating at the maximum available output power. The 1 g peak spatial SAR and ipsilateral and contralateral brain-averaged SARs were reported for all 11 phone models. The effects of the phone type, phone position, operating frequency, and age of head models on the brain SAR were comprehensively determined.

  13. New Phone System Coming to NCI Campus at Frederick | Poster

    Cancer.gov

    By Travis Fouche and Trent McKee, Guest Writers Beginning in September, phones at the NCI Campus at Frederick will begin to be replaced, as the project to upgrade the current phone system ramps up. Over the next 16 months, the Information Systems Program (ISP) will be working with Facilities Maintenance and Engineering and Computer & Statistical Services to replace the current Avaya phone system with a Cisco Unified Communications phone system. The Cisco system is already in use at the Advanced Technology Research Facility (ATRF).

  14. Long-term mobile phone use and brain tumor risk.

    PubMed

    Lönn, Stefan; Ahlbom, Anders; Hall, Per; Feychting, Maria

    2005-03-15

    Handheld mobile phones were introduced in Sweden during the late 1980s. The purpose of this population-based, case-control study was to test the hypothesis that long-term mobile phone use increases the risk of brain tumors. The authors identified all cases aged 20-69 years who were diagnosed with glioma or meningioma during 2000-2002 in certain parts of Sweden. Randomly selected controls were stratified on age, gender, and residential area. Detailed information about mobile phone use was collected from 371 (74%) glioma and 273 (85%) meningioma cases and 674 (71%) controls. For regular mobile phone use, the odds ratio was 0.8 (95% confidence interval: 0.6, 1.0) for glioma and 0.7 (95% confidence interval: 0.5, 0.9) for meningioma. Similar results were found for more than 10 years' duration of mobile phone use. No risk increase was found for ipsilateral phone use for tumors located in the temporal and parietal lobes. Furthermore, the odds ratio did not increase, regardless of tumor histology, type of phone, and amount of use. This study includes a large number of long-term mobile phone users, and the authors conclude that the data do not support the hypothesis that mobile phone use is related to an increased risk of glioma or meningioma.

  15. Mobile phone use and risk for intracranial tumors.

    PubMed

    Alexiou, George A; Sioka, Chrissa

    2015-12-23

    Mobile phone use has been discussed over the last few decades with increased risk for intracranial tumors. The majority of studies have been conducted on gliomas and meningiomas. Although some case-control studies have found a positive association between the use of mobile phones and the risk of tumors, other studies have reported no significant association. A possible long-term mobile phone use may lead to increased risk however, the evidences are not yet conclusive and further studies are needed. In the present study we reviewed the current evidence for the association between mobile phone use and risk for intracranial tumors.

  16. Cell Phones in Task Based Learning--Are Cell Phones Useful Language Learning Tools?

    ERIC Educational Resources Information Center

    Kiernan, Patrick J.; Aizawa, Kazumi

    2004-01-01

    Cell phones are now widespread in many countries including Japan where we teach, and are particularly popular among university students. Although they can be a distraction in the classroom, functions such as Internet access and e-mail capability have transformed them into sophisticated communication tools. But are they also potentially useful in…

  17. I 5683 you: dialing phone numbers on cell phones activates key-concordant concepts.

    PubMed

    Topolinski, Sascha

    2011-03-01

    When people perform actions, effects associated with the actions are activated mentally, even if those effects are not apparent. This study tested whether sequences of simulations of virtual action effects can be integrated into a meaning of their own. Cell phones were used to test this hypothesis because pressing a key on a phone is habitually associated with both digits (dialing numbers) and letters (typing text messages). In Experiment 1, dialing digit sequences induced the meaning of words that share the same key sequence (e.g., 5683, LOVE). This occurred even though the letters were not labeled on the keypad, and participants were not aware of the digit-letter correspondences. In Experiment 2, subjects preferred dialing numbers implying positive words (e.g., 37326, DREAM) over dialing numbers implying negative words (e.g., 75463, SLIME). In Experiment 3, subjects preferred companies with phone numbers implying a company-related word (e.g., LOVE for a dating agency, CORPSE for a mortician) compared with companies with phone numbers implying a company-unrelated word.

  18. Is the Phone Mightier than the Sword? Cell Phones and Insurgent Violence in Iraq

    DTIC Science & Technology

    2012-09-03

    reinforcing towers”). Table 4: Impact of Introducing Cellular Communications for Tower Areas. Panel A: Standard Difference-in-Differences...purpose (Shachtman 2008). Theoretically it is not obvious whether or how the availability of cellular communications influences political violence...examine whether cellular communications networks are security enhancing or not. Using detailed data on cell phone networks and violence in Iraq, we

  19. "Hold the Phone!": Cell Phone Use and Partner Reaction among University Students

    ERIC Educational Resources Information Center

    Beaver, Tiffany; Knox, David; Zusman, Marty E.

    2010-01-01

    Analysis of survey data from 995 undergraduates at a large southeastern university revealed that 93% reported owning a cell phone and a statistically significant difference between women and men (95% versus 91.2%) and between Whites (95.1%) and Blacks (87.7%). In addition, Blacks were twice as likely as Whites to be bothered by their partner's use…

  20. Association between vestibular schwannomas and mobile phone use.

    PubMed

    Moon, In Seok; Kim, Bo Gyung; Kim, Jinna; Lee, Jong Dae; Lee, Won-Sang

    2014-01-01

    Vestibular schwannomas (VSs) grow in the region where the energy from mobile phone use is absorbed. We examined the associations of VSs with mobile phone use. This study included 119 patients who had undergone surgical tumor removal. We used two approaches in this investigation. First, a case-control study for the association of mobile phone use and incidence of VSs was conducted. Both cases and controls were investigated with questions based on INTERPHONE guidelines. Amount of mobile phone use according to duration, daily amount, and cumulative hours were compared between two groups. We also conducted a case-case study. The location and volume of the tumors were investigated by MRI. Associations between the estimated amount of mobile phone use and tumor volume and between the laterality of phone use and tumor location were analyzed. In a case-control study, the odds ratio (OR) of tumor incidence according to mobile phone use was 0.956. In the case-case study, tumor volume and estimated cumulative hours showed a strong correlation (r(2) = 0.144, p = 0.002), and regular mobile phone users showed tumors of a markedly larger volume than those of non-regular users (p < 0.001). When the analysis was limited to regular users who had serviceable hearing, laterality showed a strong correlation with tumor side (OR = 4.5). We found that tumors may coincide with the more frequently used ear of mobile phones and tumor volume that showed strong correlation with amount of mobile phone use, thus there is a possibility that mobile phone use may affect tumor growth.

  1. 77 FR 34063 - Certain Electronic Devices, Including Mobile Phones and Tablet Computers, and Components Thereof...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-08

    ... COMMISSION Certain Electronic Devices, Including Mobile Phones and Tablet Computers, and Components Thereof... devices, including mobile phones and tablet computers, and components thereof by reason of infringement of... certain electronics devices, including mobile phones and tablet computers, and components thereof...

  2. 77 FR 27078 - Certain Electronic Devices, Including Mobile Phones and Tablet Computers, and Components Thereof...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-08

    ... COMMISSION Certain Electronic Devices, Including Mobile Phones and Tablet Computers, and Components Thereof... Trade Commission has received a complaint entitled Certain Electronic Devices, Including Mobile Phones... electronic devices, including mobile phones and tablet computers, and components thereof. The complaint...

  3. 77 FR 18860 - Certain Consumer Electronics, Including Mobile Phones and Tablets; Notice of Receipt of Complaint...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-28

    ... COMMISSION Certain Consumer Electronics, Including Mobile Phones and Tablets; Notice of Receipt of Complaint... complaint entitled Certain Consumer Electronics, Including Mobile Phones and Tablets, DN 2885; the... importation of certain consumer electronics, including mobile phones and tablets. The complaint names...

  4. iPhone in NASA Ground Operations

    NASA Technical Reports Server (NTRS)

    Benedict, Ashley; Byrd, Keena; Ignacio, Lalaine; Lagu, Amit; Palmer, Ralph Curtis, III; Savoy, April; Surabattula, Deepti; Vaitkunas, Samantha

    2007-01-01

    A comprehensive review of the literature and historical background of NASA established a need for an easy-to-implement technological improvement to displaying procedures which is cost effective and risk reducing. Previous unsuccessful attempts have led this team to explore the practicality of using a mobile handheld device. The major products, inputs, resources, constraints, planning and effort required for consideration of this type of solution were outlined. After analyzing the physical, environmental, life-cycle, functional, and socio-technical requirements, a Functional Analysis was performed to describe the top-level, second-level, and third-level functions of the system requirements. In addition, the risk/value proposition of conversion to a new technology was considered and gave a blueprint for transitioning along with the tasks necessary to implement the device into the Vehicle Assembly Building's (VAB) current infrastructure. A Work Breakdown Structure (WBS) described the elemental work items of the implementation. Once the viability of this system was confirmed, a device was selected through use of technical design comparison methods including the Pugh Matrix and House of Quality. Comparison and evaluation of the Apple iPhone, Motorola Q, Blackberry, PC Notebook, and PDA revealed that the iPhone is the most suitable device for this task. This paper outlines the device design/ architecture, as well as some of the required infrastructure.

  5. Making smart phones smarter with photonics.

    PubMed

    Lapointe, Jerome; Gagné, Mathieu; Li, Ming-Jun; Kashyap, Raman

    2014-06-30

    Smart phones and tablets have become ubiquitous. Corning® Gorilla® Glass is well-known to provide durability and scratch-resistance to many smart phones and other mobile devices. Using femtosecond lasers, we report high quality photonic devices, such as a temperature sensor and an authentication security system, we believe for the first time. It was found that this kind of glass is an exceptional host for three dimensional waveguides. High quality multimode waveguides are demonstrated with the lowest measured loss value (0.027 dB/cm loss) to our knowledge in any glass using fs laser inscription. High quality (0.053 dB/cm loss) single-mode waveguides have been also fabricated using a fs laser scan speed of 300 mm/s, the fastest fabrication speed reported to date. The longest high quality waveguides (up to 1m) are also reported. Experiments reveal that Gorilla Glass seems to be an ideal glass to write waveguides just below the surface, which is of great interest in sensing applications.

  6. Melanoma detection using a mobile phone app

    NASA Astrophysics Data System (ADS)

    Diniz, Luciano E.; Ennser, K.

    2016-03-01

    Mobile phones have had their processing power greatly increased since their invention a few decades ago. As a direct result of Moore's Law, this improvement has made available several applications that were impossible before. The aim of this project is to develop a mobile phone app, integrated with its camera coupled to an amplifying lens, to help distinguish melanoma. The proposed device has the capability of processing skin mole images and suggesting, using a score system, if it is a case of melanoma or not. This score system is based on the ABCDE signs of melanoma, and takes into account the area, the perimeter and the colors present in the nevus. It was calibrated and tested using images from the PH2 Dermoscopic Image Database from Pedro Hispano Hospital. The results show that the system created can be useful, with an accuracy of up to 100% for malign cases and 80% for benign cases (including common and atypical moles), when used in the test group.

  7. Lifestyle chemistries from phones for individual profiling

    PubMed Central

    Bouslimani, Amina; Melnik, Alexey V.; Xu, Zhenjiang; Amir, Amnon; da Silva, Ricardo R.; Wang, Mingxun; Bandeira, Nuno; Alexandrov, Theodore; Knight, Rob; Dorrestein, Pieter C.

    2016-01-01

    Imagine a scenario where personal belongings such as pens, keys, phones, or handbags are found at an investigative site. It is often valuable to the investigative team that is trying to trace back the belongings to an individual to understand their personal habits, even when DNA evidence is also available. Here, we develop an approach to translate chemistries recovered from personal objects such as phones into a lifestyle sketch of the owner, using mass spectrometry and informatics approaches. Our results show that phones’ chemistries reflect a personalized lifestyle profile. The collective repertoire of molecules found on these objects provides a sketch of the lifestyle of an individual by highlighting the type of hygiene/beauty products the person uses, diet, medical status, and even the location where this person may have been. These findings introduce an additional form of trace evidence from skin-associated lifestyle chemicals found on personal belongings. Such information could help a criminal investigator narrowing down the owner of an object found at a crime scene, such as a suspect or missing person. PMID:27849584

  8. Mobile phones: are children at higher risk?

    PubMed

    Leitgeb, Norbert

    2008-01-01

    The use of mobile phones by children has in recent years been increasing, the onset starting earlier and earlier. This has led to concern about whether children might be at higher risk and whether mobile phone use should even be forbidden. Advice from highly reputed committees on both national and international levels is contradictory and on the whole more confusing than helpful to worried parents and physicians, but this can be explained. It is shown here that different opinions derived from the same database reflect the different way in which uncertainty of knowledge is dealt with. Based on the assessments of the international committee and established knowledge on children's development it can be concluded that existing exposure limits do in fact provide reasonable safety. Compared to adults, however, children do in fact need to be considered at a relatively higher potential risk, depending on their phase of development. If adults are advised to minimise their exposure, this is even more justified for children. However, circular reasoning must be avoided: the uncertainty-triggered application of precaution must not be misinterpreted as evidence for definite risk.

  9. Tracking employment shocks using mobile phone data

    PubMed Central

    Toole, Jameson L.; Lin, Yu-Ru; Muehlegger, Erich; Shoag, Daniel; González, Marta C.; Lazer, David

    2015-01-01

    Can data from mobile phones be used to observe economic shocks and their consequences at multiple scales? Here we present novel methods to detect mass layoffs, identify individuals affected by them and predict changes in aggregate unemployment rates using call detail records (CDRs) from mobile phones. Using the closure of a large manufacturing plant as a case study, we first describe a structural break model to correctly detect the date of a mass layoff and estimate its size. We then use a Bayesian classification model to identify affected individuals by observing changes in calling behaviour following the plant's closure. For these affected individuals, we observe significant declines in social behaviour and mobility following job loss. Using the features identified at the micro level, we show that the same changes in these calling behaviours, aggregated at the regional level, can improve forecasts of macro unemployment rates. These methods and results highlight promise of new data resources to measure microeconomic behaviour and improve estimates of critical economic indicators. PMID:26018965

  10. Tracking employment shocks using mobile phone data.

    PubMed

    Toole, Jameson L; Lin, Yu-Ru; Muehlegger, Erich; Shoag, Daniel; González, Marta C; Lazer, David

    2015-06-06

    Can data from mobile phones be used to observe economic shocks and their consequences at multiple scales? Here we present novel methods to detect mass layoffs, identify individuals affected by them and predict changes in aggregate unemployment rates using call detail records (CDRs) from mobile phones. Using the closure of a large manufacturing plant as a case study, we first describe a structural break model to correctly detect the date of a mass layoff and estimate its size. We then use a Bayesian classification model to identify affected individuals by observing changes in calling behaviour following the plant's closure. For these affected individuals, we observe significant declines in social behaviour and mobility following job loss. Using the features identified at the micro level, we show that the same changes in these calling behaviours, aggregated at the regional level, can improve forecasts of macro unemployment rates. These methods and results highlight promise of new data resources to measure microeconomic behaviour and improve estimates of critical economic indicators.

  11. Prediction limits of mobile phone activity modelling

    PubMed Central

    Grauwin, Sebastian; Kallus, Zsófia; Gódor, István; Sobolevsky, Stanislav; Ratti, Carlo

    2017-01-01

    Thanks to their widespread usage, mobile devices have become one of the main sensors of human behaviour and digital traces left behind can be used as a proxy to study urban environments. Exploring the nature of the spatio-temporal patterns of mobile phone activity could thus be a crucial step towards understanding the full spectrum of human activities. Using 10 months of mobile phone records from Greater London resolved in both space and time, we investigate the regularity of human telecommunication activity on urban scales. We evaluate several options for decomposing activity timelines into typical and residual patterns, accounting for the strong periodic and seasonal components. We carry out our analysis on various spatial scales, showing that regularity increases as we look at aggregated activity in larger spatial units with more activity in them. We examine the statistical properties of the residuals and show that it can be explained by noise and specific outliers. Also, we look at sources of deviations from the general trends, which we find to be explainable based on knowledge of the city structure and places of attractions. We show examples how some of the outliers can be related to external factors such as specific social events. PMID:28386443

  12. A Web Page Summarization for Mobile Phones

    NASA Astrophysics Data System (ADS)

    Hasegawa, Takaaki; Nishikawa, Hitoshi; Imamura, Kenji; Kikui, Gen'ichiro; Okumur, Manabu

    Recently, web pages for mobile devices are widely spread on the Internet and a lot of people can access web pages through search engines by mobile devices as well as personal computers. A summary of a retrieved web page is important because the people judge whether or not the page would be relevant to their information need according to the summary. In particular, the summary must be not only compact but also grammatical and meaningful when the users retrieve information using a mobile phone with a small screen. Most search engines seem to produce a snippet based on the keyword-in-context (KWIC) method. However, this simple method could not generate a refined summary suitable for mobile phones because of low grammaticality and content overlap with the page title. We propose a more suitable method to generate a snippet for mobile devices using sentence extraction and sentence compression methods. First, sentences are biased based on whether they include the query terms from the users or words that are relevant to the queries, as well as whether they do not overlap with the page title based on maximal marginal relevance (MMR). Second, the selected sentences are compressed based on their phrase coverage, which is measured by the scores of words, and their phrase connection probability measured based on the language model, according to the dependency structure converted from the sentence. The experimental results reveal the proposed method outperformed the KWIC method in terms of relevance judgment, grammaticality, non-redundancy and content coverage.

  13. Toxicity characterization of waste mobile phone plastics.

    PubMed

    Nnorom, I C; Osibanjo, O

    2009-01-15

    Waste plastic housing units (N=60) of mobile phones (of different models, and brands), were collected and analyzed for lead, cadmium, nickel and silver using atomic absorption spectrophotometry after acid digestion using a 1:1 mixture of H2SO4 and HNO3. The mean (+/-S.D.) and range of the results are 58.3+/-50.4mg/kg (5.0-340mg/kg) for Pb, 69.9+/-145mg/kg (4.6-1005mg/kg) for Cd, 432+/-1905mg/kg (5.0-11,000mg/kg) for Ni, and 403+/-1888mg/kg (5.0-12,500mg/kg) for Ag. Approximately 90% of the results for the various metals were < or =100mg/kg. Results greater than 300mg/kg were generally less than 7% for each metal and could be attributed to exogenous contamination of the samples. These results suggest that there may not be any immediate danger from end-of-life (EoL) mobile phone plastic housing if appropriately treated/managed. However, considering the large quantities generated and the present low-end management practices in most developing countries, such as open burning, there appears a genuine concern over the potential for environmental pollution and toxicity to man and the ecology.

  14. Teen Perceptions of Cellular Phones as a Communication Tool

    ERIC Educational Resources Information Center

    Jonas, Denise D.

    2011-01-01

    The excitement and interest in innovative technologies has spanned centuries. However, the invention of the cellular phone has surpassed previous technology interests, and changed the way we communicate today. Teens make up the fastest growing market of current cellular phone users. Consequently, the purpose of this study was to determine teen…

  15. Auditory Brainstem Responses and EMFs Generated by Mobile Phones.

    PubMed

    Khullar, Shilpa; Sood, Archana; Sood, Sanjay

    2013-12-01

    There has been a manifold increase in the number of mobile phone users throughout the world with the current number of users exceeding 2 billion. However this advancement in technology like many others is accompanied by a progressive increase in the frequency and intensity of electromagnetic waves without consideration of the health consequences. The aim of our study was to advance our understanding of the potential adverse effects of GSM mobile phones on auditory brainstem responses (ABRs). 60 subjects were selected for the study and divided into three groups of 20 each based on their usage of mobile phones. Their ABRs were recorded and analysed for latency of waves I-V as well as interpeak latencies I-III, I-V and III-V (in ms). Results revealed no significant difference in the ABR parameters between group A (control group) and group B (subjects using mobile phones for maximum 30 min/day for 5 years). However the latency of waves was significantly prolonged in group C (subjects using mobile phones for 10 years for a maximum of 30 min/day) as compared to the control group. Based on our findings we concluded that long term exposure to mobile phones may affect conduction in the peripheral portion of the auditory pathway. However more research needs to be done to study the long term effects of mobile phones particularly of newer technologies like smart phones and 3G.

  16. Study Regarding Electromagnetic Radiation Exposure Generated By Mobile Phone

    SciTech Connect

    Marica, Lucia; Moraru, Luminita

    2011-12-26

    Number of mobile phone users reached to 5 billion subscribers in 2010 [ABI Research, 2010]. A large number of studies illustrated the public concern about adverse effects of mobile phone radiation and possible health hazards. Position of mobile phone use in close proximity to the head leads the main radiation between the hand and the head. Many investigations studying the possible effects of mobile phone exposure, founded no measurable effects of short-term mobile phone radiation, and there was no evidence for the ability to perceive mobile phone EMF in the general population. In this study, field radiation measurements were performed on different brand and different models of mobile phones in active mode, using an EMF RF Radiation Field Strength Power Meter 1 MHz-8 GHz. The study was effectuated on both the 2G and 3G generations phones connected to the providers operating in the frequency range 450 MHz-1800 MHz. There were recorded values in outgoing call and SMS mode, incoming call and SMS mode. Results were compared with ICNIRP guidelines for exposure to general public.

  17. Eliminating the Textbook: Learning Science with Cell Phones

    ERIC Educational Resources Information Center

    Tessier, Jack T.

    2014-01-01

    College faculty have myriad choices of resources for their students when designing courses. The rising prices of textbooks and the availability of cell phones with internet access open the question of using cell phones in the classroom. In this study, I compared student learning in an ecology course between a semester in which a textbook was used…

  18. Cell Phones: A Bibliometric Analysis Related to Business Students

    ERIC Educational Resources Information Center

    Piotrowski, Chris

    2014-01-01

    Recent reviews of the literature indicate that the scope of research on cell or mobile phones covers a vast typology (Piotrowski & Kass, 2013). The majority of this research is concentrated in the technology, education, and social sciences fields. However, there is a dearth of bibliometric studies on cell phones related to business. To that…

  19. Is It Safe to Allow Cell Phones in School?

    ERIC Educational Resources Information Center

    Trump, Kenneth S.

    2009-01-01

    Cell phones were banned from most schools years ago, but after the Columbine High School and 9/11 tragedies, parents started pressuring some school boards and administrators to reverse the bans. On its surface, allowing students to have cell phones under the guise of improved school safety may seem like a "no-brainer" to many board members and…

  20. Infrared thermography based studies on mobile phone induced heating

    NASA Astrophysics Data System (ADS)

    Lahiri, B. B.; Bagavathiappan, S.; Soumya, C.; Jayakumar, T.; Philip, John

    2015-07-01

    Here, we report the skin temperature rise due to the absorption of radio frequency (RF) energy from three handheld mobile phones using infrared thermography technique. Experiments are performed under two different conditions, viz. when the mobile phones are placed in soft touch with the skin surface and away from the skin surface. Additionally, the temperature rise of mobile phones during charging, operation and simultaneous charging and talking are monitored under different exposure conditions. It is observed that the temperature of the cheek and ear regions monotonically increased with time during the usage of mobile phones and the magnitude of the temperature rise is higher for the mobile phone with higher specific absorption rate. The increase in skin temperature is higher when the mobile phones are in contact with the skin surface due to the combined effect of absorption of RF electromagnetic power and conductive heat transfer. The increase in the skin temperature in non-contact mode is found to be within the safety limit of 1 °C. The measured temperature rise is in good agreement with theoretical predictions. The empirical equation obtained from the temperature rise on the cheek region of the subjects correlates well with the specific absorption rate of the mobile phones. Our study suggests that the use of mobile phones in non-contact mode can significantly lower the skin temperature rise during its use and hence, is safer compared to the contact mode.

  1. Mobile phones carry the personal microbiome of their owners.

    PubMed

    Meadow, James F; Altrichter, Adam E; Green, Jessica L

    2014-01-01

    Most people on the planet own mobile phones, and these devices are increasingly being utilized to gather data relevant to our personal health, behavior, and environment. During an educational workshop, we investigated the utility of mobile phones to gather data about the personal microbiome - the collection of microorganisms associated with the personal effects of an individual. We characterized microbial communities on smartphone touchscreens to determine whether there was significant overlap with the skin microbiome sampled directly from their owners. We found that about 22% of the bacterial taxa on participants' fingers were also present on their own phones, as compared to 17% they shared on average with other people's phones. When considered as a group, bacterial communities on men's phones were significantly different from those on their fingers, while women's were not. Yet when considered on an individual level, men and women both shared significantly more of their bacterial communities with their own phones than with anyone else's. In fact, 82% of the OTUs were shared between a person's index and phone when considering the dominant taxa (OTUs with more than 0.1% of the sequences in an individual's dataset). Our results suggest that mobile phones hold untapped potential as personal microbiome sensors.

  2. Mobile Phones in Education: Challenges and Opportunities for Learning

    ERIC Educational Resources Information Center

    Keengwe, Jared; Schnellert, Gary; Jonas, Denise

    2014-01-01

    The millennials use mobile phones on a daily basis to keep in touch with family and friends (Lenhart 2010). However, the role of mobile phones in education needs to be close examined as educators strive to incorporate mobile leaning devices in the classroom. Consequently, schools will not only need to evaluate their school curriculums but also…

  3. Adolescent Use of Mobile Phones: A Social Context

    ERIC Educational Resources Information Center

    F, J.; Pullen, Darren; Swabey, Karen

    2014-01-01

    During adolescence (e.g. ages 13-15) communication and connectedness with peers is an essential part of adolescents' self-formation; mobiles phones are a conduit that maintains both communication and connectedness among adolescents whereby social interactions and connectedness are not limited by place, context or time. To study mobile phone usage…

  4. Mobile Phone Images and Video in Science Teaching and Learning

    ERIC Educational Resources Information Center

    Ekanayake, Sakunthala Yatigammana; Wishart, Jocelyn

    2014-01-01

    This article reports a study into how mobile phones could be used to enhance teaching and learning in secondary school science. It describes four lessons devised by groups of Sri Lankan teachers all of which centred on the use of the mobile phone cameras rather than their communication functions. A qualitative methodological approach was used to…

  5. Impact of cell phone use on men's semen parameters.

    PubMed

    Gutschi, T; Mohamad Al-Ali, B; Shamloul, R; Pummer, K; Trummer, H

    2011-10-01

    The objective of the present retrospective study was to report our experience concerning the effects of cell phone usage on semen parameters. We examined 2110 men attending our infertility clinic from 1993 to October 2007. Semen analysis was performed in all patients. Serum free testosterone (T), follicle stimulating hormone (FSH), luteinising hormone (LH) and prolactin (PRL) were collected from all patients. The information on cell phone use of the patients was recorded and the subjects were divided into two groups according to their cell phone use: group A: cell phone use (n = 991); group B: no use (n = 1119). Significant difference was observed in sperm morphology between the two groups. In the patients of group A, 68.0% of the spermatozoa featured a pathological morphology compared to only 58.1% in the subjects of group B. Patients with cell phone usage showed significantly higher T and lower LH levels than those who did not use cell phone. No significant difference between the two groups was observed regarding FSH and PRL values. Our results showed that cell phone use negatively affects sperm quality in men. Further studies with a careful design are needed to determine the effect of cell phone use on male fertility.

  6. Study Regarding Electromagnetic Radiation Exposure Generated By Mobile Phone

    NASA Astrophysics Data System (ADS)

    Marica, Lucia; Moraru, Luminita

    2011-12-01

    Number of mobile phone users reached to 5 billion subscribers in 2010 [ABI Research, 2010]. A large number of studies illustrated the public concern about adverse effects of mobile phone radiation and possible health hazards. Position of mobile phone use in close proximity to the head leads the main radiation between the hand and the head. Many investigations studying the possible effects of mobile phone exposure, founded no measurable effects of short-term mobile phone radiation, and there was no evidence for the ability to perceive mobile phone EMF in the general population. In this study, field radiation measurements were performed on different brand and different models of mobile phones in active mode, using an EMF RF Radiation Field Strength Power Meter 1 MHz-8 GHz. The study was effectuated on both the 2G and 3G generations phones connected to the providers operating in the frequency range 450 MHz-1800 MHz. There were recorded values in outgoing call and SMS mode, incoming call and SMS mode. Results were compared with ICNIRP guidelines for exposure to general public.

  7. Teaching Generation Text: Using Cell Phones to Enhance Learning

    ERIC Educational Resources Information Center

    Nielsen, Lisa; Webb, Willyn

    2011-01-01

    "Teaching Generation Text" shows how teachers can turn cell phones into an educational opportunity instead of an annoying distraction. With a host of innovative ideas, activities, lessons, and strategies, Nielsen and Webb offer a unique way to use students' preferred method of communication in the classroom. Cell phones can remind students to…

  8. The Relationship between Cell Phone Use and Identity Theft

    ERIC Educational Resources Information Center

    Saunders, Lewis O.

    2014-01-01

    The growth of mobile phone use has paralleled increased reports of identity theft. Identity theft can result in financial loss and threats to a victim's personal safety. Although trends in identity theft are well-known, less is known about individual cell phone users' attitudes toward identity theft and the extent to which they connect it to cell…

  9. Simulating the TV Phone in Communication Skills Training.

    ERIC Educational Resources Information Center

    Friel, Michael

    1991-01-01

    Describes two projects developed as part of a Communication Skills course for trainee electronic technicians. The students are taught to communicate via a simulated TV phone. Some communicative features of the simulated TV phone are described, and potential uses in language teaching are outlined. (GLR)

  10. Health hazards of mobile phones: an Indian perspective.

    PubMed

    Kapdi, Mukta; Hoskote, Sumedh S; Joshi, Shashank R

    2008-11-01

    The mobile phone industry has been one of the fastest growing industries in modern history. Today, India has million mobile phone users, and mobile phones account for 88% of all telecommunication users. The rural sector accounts for more than 25% of all wireless phone users and this proportion is bound to grow as affordability of mobile phones continues to increase. In the years ahead, an ever-increasing number exposed for long periods of time to radiation from mobile phones. In 2008, the Telecom Commission (the policy-making body of the Department of Telecommunicatics, Government of India) adopted the emission guidelines prescribed by the International Commission on Non-Protection (ICNIRP). Studies have demonstrated that usage behaviours, such as duration of usage and predominant, one-sided use of mobile phones are some of the chief risks that increase likelihood of hazards resulting from mobile phone use. This article attempts to present the basic biophysics of these devices and explain the health hazards of electromagnetic radiation exposure in terms of thermal and non-thermal effects. We also present some preventive measures that can reduce the risk of these hazards.

  11. Sexual Assemblages: Mobile Phones/Young People/School

    ERIC Educational Resources Information Center

    Allen, Louisa

    2015-01-01

    This paper asks, what more can we think in relation to debates around young people's use of mobile phones at school? Rather than attempting to answer the question of whether mobile phones are "good" or "bad" for young people, this paper recasts the debate's ontological underpinnings. To do this feminist appropriations of the…

  12. Cell Phones: Business Students in the Business Literature

    ERIC Educational Resources Information Center

    Piotrowski, Chris

    2013-01-01

    Research on the topic of cell phones has proliferated over the past decade. Based on a review of the literature, it appears that the majority of the extant research on the topic resides in the technology, education, and social sciences fields. Recent reviews indicate that the scope of the research on cell/mobile phones is eclectic in nature…

  13. Passenger and Cell Phone Conversations in Simulated Driving

    ERIC Educational Resources Information Center

    Drews, Frank A.; Pasupathi, Monisha; Strayer, David L.

    2008-01-01

    This study examines how conversing with passengers in a vehicle differs from conversing on a cell phone while driving. We compared how well drivers were able to deal with the demands of driving when conversing on a cell phone, conversing with a passenger, and when driving without any distraction. In the conversation conditions, participants were…

  14. Chinese Text Spacing on Mobile Phones for Senior Citizens

    ERIC Educational Resources Information Center

    Wang, Lin; Sato, Hitomi; Rau, Pei-Luen Patrick; Fujimura, Kaori; Gao, Qin; Asano, Yoko

    2009-01-01

    In recent years, more and more elderly citizens have begun using mobile phones. However, most text presentations on mobile phones are not suitable for those whose vision has declined with age. The objective of this study was to discover how different Chinese text spacing would affect older adults' reading performance (time and error), text…

  15. Prevalence of Mobile Phone Dependence in Secondary School Adolescents

    PubMed Central

    Nikhita, Chimatapu Sri; Jadhav, Pradeep R

    2015-01-01

    Introduction Mobile phones have become an essential part of modern human life. They have many attributes which makes them very attractive to both young and old. There has been an increasing trend of use of mobile phones among students. Data has now started emerging with respect to the negative physical and psychological consequences of excessive use of mobile phones. New research has shown excessive use of mobile phones leading to development of symptoms suggestive of dependence syndrome. Aim To study the prevalence of Mobile Phone Dependence (MPD) in secondary school adolescents. Setting and Design Cross-sectional, observational study conducted in secondary section of English-medium schools at Navi Mumbai (India). Materials and Methods Four hundred and fifteen students studying in 8th, 9th and 10th standards of schools at Navi Mumbai (India) having personal mobile phone were randomly included in the study. Participant information like age, gender, family type, phone type, duration of use per day and years of mobile phone usage was recorded. They were administered an MPD questionnaire based upon the dependence syndrome criteria as per ICD-10. According to their responses, participants who fulfilled three or more of the diagnostic criteria were rated as having MPD. Results Mobile Phone Dependence was found in 31.33% of sample students. It was significantly associated with gender (p=0.003, OR=1.91, CI: 1.23-2.99), family type (p=0.0012), type of mobile phone used (p<0.001, OR=2.6, CI: 1.63-4.35), average time per day spent using mobile phone (p<0.001) and years of mobile phone usage (p =0.004, OR=2.4, CI: 1.31-4.55). Conclusion Mobile Phone Dependence has been found to be an emerging public health problem. There is need to recognize and identify early the growing trends and negative consequences of inappropriate mobile phone use in young users so as to generate awareness, and plan educational and treatment interventions, if need be, so as to prevent a major public

  16. Mobile phone collection, reuse and recycling in the UK

    SciTech Connect

    Ongondo, F.O.; Williams, I.D.

    2011-06-15

    Highlights: > We characterized the key features of the voluntary UK mobile phone takeback network via a survey. > We identified 3 flows: information; product (handsets and accessories); and incentives. > There has been a significant rise in the number of UK takeback schemes since 1997. > Most returned handsets are low quality; little data exists on quantities of mobile phones collected. > Takeback schemes increasingly divert EoL mobile phones from landfill and enable reuse/recycling. - Abstract: Mobile phones are the most ubiquitous electronic product on the globe. They have relatively short lifecycles and because of their (perceived) in-built obsolescence, discarded mobile phones represent a significant and growing problem with respect to waste electrical and electronic equipment (WEEE). An emerging and increasingly important issue for industry is the shortage of key metals, especially the types of metals found in mobile phones, and hence the primary aim of this timely study was to assess and evaluate the voluntary mobile phone takeback network in the UK. The study has characterised the information, product and incentives flows in the voluntary UK mobile phone takeback network and reviewed the merits and demerits of the incentives offered. A survey of the activities of the voluntary mobile phone takeback schemes was undertaken in 2008 to: identify and evaluate the takeback schemes operating in the UK; determine the target groups from whom handsets are collected; and assess the collection, promotion and advertising methods used by the schemes. In addition, the survey sought to identify and critically evaluate the incentives offered by the takeback schemes, evaluate their ease and convenience of use; and determine the types, qualities and quantities of mobile phones they collect. The study has established that the UK voluntary mobile phone takeback network can be characterised as three distinctive flows: information flow; product flow (handsets and related

  17. Is problematic mobile phone use explained by chronotype and personality?

    PubMed

    Demirhan, Eda; Randler, Christoph; Horzum, Mehmet Barış

    2016-01-01

    In this study, the relationships among problematic mobile phone use, age, gender, personality and chronotype of Turkish university students were examined. The study included 902 university students (73% female, 27% male) and their participation in the study was anonymous and voluntary. Data were collected from each participant by assessing a demographic questionnaire, Composite Scale of Morningness (CSM) as a measure of chronotype, the Big Five Inventory (BIG-5) for personality assessment and Mobile Phone Problem Usage Scale (MPPUS). The most important result was that CSM scores were the best predictor for problematic mobile phone usage, and as a consequence, evening-oriented university students scored higher on the MPPUS. This result remained, even when compared with the most influential personality predictor, conscientiousness. In addition, while extraversion positively predicted, emotional stable and chronotype negatively predicted problematic mobile phone use. Lastly, age and gender were not predictors of problematic mobile phone use.

  18. Using Cell Phones to Improve Language Skills: The Hadeda Project

    NASA Astrophysics Data System (ADS)

    Butgereit, Laurie; Botha, Adele; van Niekerk, Daniel

    Language skills are essential for education and economic development. Many countries (especially in Africa) have more than one official language and even more unofficial languages. Being able to express oneself effectively in the written word is required for tertiary education. Unfortunately, cell phones are often blamed for the degradation of language skills. There have been many studies blaming cell phone usage and instant messaging as being responsible for the the lack of language skills of children, teenagers, and young adults. Hadeda is a facility where teachers and parents can create spelling lists for pupils and children using either a cell phone or an internet based workstation. Hadeda then generates a fun and enjoyable cell phone midlet (computer program) which pupils and children can download onto their personal cell phone. Hadeda pronounces the words with electronic voices and the pupils and children can then practice their spelling on a medium they enjoy.

  19. Pedestrian injuries due to mobile phone use in public places.

    PubMed

    Nasar, Jack L; Troyer, Derek

    2013-08-01

    Research shows that pedestrians, similar to drivers, experience reduced situation awareness, distracted attention and unsafe behavior when talking or texting on their mobile phones. The present study centered on injuries related to mobile phone use among pedestrians. It used data from the US Consumer Product Safety Commission on injuries in hospital emergency rooms from 2004 through 2010. It found that mobile-phone related injuries among pedestrians increased relative to total pedestrian injuries, and paralleled the increase in injuries for drivers, and in 2010 exceeded those for drivers. Pedestrian injuries related to mobile-phone use were higher for males and for people under 31 years old. Using a mobile phone while walking puts pedestrians at risk of accident, injury or death.

  20. 2010 Survey on cell phone use while performing cardiopulmonary bypass.

    PubMed

    Smith, T; Darling, E; Searles, B

    2011-09-01

    Cell phone use in the U.S. has increased dramatically over the past decade and text messaging among adults is now mainstream. In professions such as perfusion, where clinical vigilance is essential to patient care, the potential distraction of cell phones may be especially problematic. However, the extent of this as an issue is currently unknown. Therefore, the purpose of this study was to (1) determine the frequency of cell phone use in the perfusion community, and (2) to identify concerns and opinions among perfusionists regarding cell phone use. In October 2010, a link to a 19-question survey (surveymonkey.com) was posted on the AmSECT (PerfList) and Perfusion.com (PerfMail) forums. There were 439 respondents. Demographic distribution is as follows; Chief Perfusionist (30.5%), Staff Perfusionist (62.0%), and Other (7.5%), with age ranges of 20-30 years (14.2%), 30-40 years (26.5%), 40-50 years (26.7%), 50-60 years (26.7%), >60 years (5.9%). The use of a cell phone during the performance of cardiopulmonary bypass (CPB) was reported by 55.6% of perfusionists. Sending text messages while performing CPB was acknowledged by 49.2%, with clear generational differences detected when cross-referenced with age groups. For smart phone features, perfusionists report having accessed e-mail (21%), used the internet (15.1%), or have checked/posted on social networking sites (3.1%) while performing CPB. Safety concerns were expressed by 78.3% who believe that cell phones can introduce a potentially significant safety risk to patients. Speaking on a cell phone and text messaging during CPB are regarded as "always an unsafe practice" by 42.3% and 51.7% of respondents, respectively. Personal distraction by cell phone use that negatively affected performance was admitted by 7.3%, whereas witnessing another perfusionist distracted with phone/text while on CPB was acknowledged by 33.7% of respondents. This survey suggests that the majority of perfusionists believe cell phones raise

  1. Mobile cell-phones (M-phones) in telemicroscopy: increasing connectivity of isolated laboratories

    PubMed Central

    Bellina, Livia; Missoni, Eduardo

    2009-01-01

    Background The development of modern information telecommunication (ITC) technology and its use in telemedicine plays an increasingly important role in facilitating access to some diagnostic services even to people living in the most remote areas. However, physical and economical constraints in the access to broad band data-transmission network, still represent a considerable obstacle to the transmission of images for the purpose of tele-pathology. Methods Indifferently using m-phones of different brands, and a variety of microscopic preparations, images were taken without the use of any adaptor simply approaching the lens of the mobile cell phone camera to the ocular of common optical microscopes, and subsequently sent via Multimedia Messaging Services (MMS) to distant reference centres for tele-diagnosis. Access to MMS service was reviewed with specific reference to the African information communication technology (ICT) market. Results Images of any pathologic preparation could be captured and sent over the mobile phone with an MMS, without being limited by appropriate access to the internet for transmission (i.e. access to broad-band services). The quality of the image was not influenced by the brand or model of the mobile-phone used, but only by its digital resolution, with any resolution above 0.8 megapixel resulting in images sufficient for diagnosis. Access to MMS services is increasingly reaching remote disadvantaged areas. Current penetration of the service in Africa was mapped appearing already available in almost every country, with penetration index varying from 1.5% to 92.2%. Conclusion The use of otherwise already widely available technologies, without any need for adaptors or otherwise additional technology, could significantly increase opportunities and quality diagnostics while lowering costs and considerably increasing connectivity between most isolated laboratories and distant reference center. PMID:19545373

  2. Life cycle assessment of mobile phone housing.

    PubMed

    Yang, Jian-xin; Wang, Ru-song; Fu, Hao; Liu, Jing-ru

    2004-01-01

    The life cycle assessment of the mobile phone housing in Motorola(China) Electronics Ltd. was carried out, in which materials flows and environmental emissions based on a basic production scheme were analyzed and assessed. In the manufacturing stage, such primary processes as polycarbonate molding and surface painting are included, whereas different surface finishing technologies like normal painting, electroplate, IMD and VDM etc. were assessed. The results showed that housing decoration plays a significant role within the housing life cycle. The most significant environmental impact from housing production is the photochemical ozone formation potential. Environmental impacts of different decoration techniques varied widely, for example, the electroplating technique is more environmentally friendly than VDM. VDM consumes much more energy and raw material. In addition, the results of two alternative scenarios of dematerialization showed that material flow analysis and assessment is very important and valuable in selecting an environmentally friendly process.

  3. Using Cell Phone Keyboards Is (NP) Hard

    NASA Astrophysics Data System (ADS)

    Boothe, Peter

    Sending text messages on cell phones which only contain the keys 0 through 9 and # and * can be a painful experience. We consider the problem of designing an optimal mapping of numbers to sets of letters to act as an alternative to the standard {2→{abc}, 3→{def}...}. Our overall goal is to minimize the expected number of buttons that must be pressed to enter a message in English. Some variations of the problem are efficiently solvable, either by being small instances or by being in P, but the most realistic version of the problem is NP hard. To prove NP-completeness, we describe a new graph coloring problem UniquePathColoring. We also provide numerical results for the English language on a standard corpus which describe several mappings that improve upon the standard one. With luck, one of these new mappings will achieve success similar to that of the Dvorak layout for computer keyboards.

  4. Heterophonic speech recognition using composite phones.

    PubMed

    Alkhairy, Ashraf; Jafri, Afshan

    2016-01-01

    Heterophones pose challenges during training of automatic speech recognition (ASR) systems because they involve ambiguity in the pronunciation of an orthographic representation of a word. Heterophones are words that have the same spelling but different pronunciations. This paper addresses the problem of heterophonic languages by developing the concept of a Composite Phoneme (CP) as a basic pronunciation unit for speech recognition. A CP is a set of alternative sequences of phonemes. CP's are developed specifically in the context of Arabic by defining phonetic units that are consonant centric and absorb phonemically contrastive short vowels and gemination, not represented in the Arabic Modern Orthography (MO). CPs alleviate the need to diacritize MO into Classical Orthography (CO), to represent short vowels and stress, before generating pronunciation in terms of Simple Phonemes (SP). We develop algorithms to generate CP pronunciation from MO, and SP pronunciation from CO to map a word into a single pronunciation. We investigate the performance of CP, SP, UG (Undiacritized Grapheme), and DG (Diacritized Grapheme) ASRs. The experimental results suggest that UG and DG are inferior to SP and CP. For the A-SpeechDB corpus with MO vocabulary of 8000, the WER for bigram and context dependent phone are: 11.78, 12.64, and 13.59 % for CP, SP_M (SP from manual diacritized CO), and SP_A (SP from automated diacritized MO) respectively. For vocabulary of 24,000 MO words, the corresponding WER's are 13.69, 15.08, and 16.86 %. For uniform statistical model, SP has a lower WER than CP. For context independent phone (CI), CP has lower WER than SP.

  5. Cuffless differential blood pressure estimation using smart phones.

    PubMed

    Chandrasekaran, Vikram; Dantu, Ram; Jonnada, Srikanth; Thiyagaraja, Shanti; Subbu, Kalyan Pathapati

    2013-04-01

    Smart phones today have become increasingly popular with the general public for their diverse functionalities such as navigation, social networking, and multimedia facilities. These phones are equipped with high-end processors, high-resolution cameras, and built-in sensors such as accelerometer, orientation-sensor, and light-sensor. According to comScore survey, 26.2% of U.S. adults use smart phones in their daily lives. Motivated by this statistic and the diverse capability of smart phones, we focus on utilizing them for biomedical applications. We present a new application of the smart phone with its built-in camera and microphone replacing the traditional stethoscope and cuff-based measurement technique, to quantify vital signs such as heart rate and blood pressure. We propose two differential blood pressure estimating techniques using the heartbeat and pulse data. The first method uses two smart phones whereas the second method replaces one of the phones with a customized external microphone. We estimate the systolic and diastolic pressure in the two techniques by computing the pulse pressure and the stroke volume from the data recorded. By comparing the estimated blood pressure values with those measured using a commercial blood pressure meter, we obtained encouraging results of 95-100% accuracy.

  6. Mobile phones in residential treatment: implications for practice.

    PubMed

    Collier, Scott; Gavriel, Mardell

    2015-08-01

    A nonprofit primary care, substance abuse and mental health treatment provider that operates nine separate residential treatment facilities in both northern and southern California began allowing clients to keep their mobile phones while in treatment. From the advent of mobile phone technology and its widespread adoption through early 2013, the organization prohibited clients from having phones while in treatment. Calls to and from clients needed to be made and received at the house phone. After years of enforcing the policy with diminished success as phones became cheaper, smaller, and more prevalent, agency leadership decided to experiment with allowing the clients to keep their phones while in treatment. Elopement data as they relate to the policy are examined along with data from staff interviews about its implementation and impact. Results show that elopements resulting from being caught with a mobile phone were eliminated and some clients were able to be returned to treatment using the devices. All seven (100%) of the interviewees were supportive of the new policy and thought it should be continued. The impact of the policy on clinical disruptions, lost/stolen property liability, and confidentiality issues are discussed.

  7. Surface Plasmon Resonance Biosensor Based on Smart Phone Platforms.

    PubMed

    Liu, Yun; Liu, Qiang; Chen, Shimeng; Cheng, Fang; Wang, Hanqi; Peng, Wei

    2015-08-10

    We demonstrate a fiber optic surface plasmon resonance (SPR) biosensor based on smart phone platforms. The light-weight optical components and sensing element are connected by optical fibers on a phone case. This SPR adaptor can be conveniently installed or removed from smart phones. The measurement, control and reference channels are illuminated by the light entering the lead-in fibers from the phone's LED flash, while the light from the end faces of the lead-out fibers is detected by the phone's camera. The SPR-sensing element is fabricated by a light-guiding silica capillary that is stripped off its cladding and coated with 50-nm gold film. Utilizing a smart application to extract the light intensity information from the camera images, the light intensities of each channel are recorded every 0.5 s with refractive index (RI) changes. The performance of the smart phone-based SPR platform for accurate and repeatable measurements was evaluated by detecting different concentrations of antibody binding to a functionalized sensing element, and the experiment results were validated through contrast experiments with a commercial SPR instrument. This cost-effective and portable SPR biosensor based on smart phones has many applications, such as medicine, health and environmental monitoring.

  8. Mobile phone use while driving: a hybrid modeling approach.

    PubMed

    Márquez, Luis; Cantillo, Víctor; Arellana, Julián

    2015-05-01

    The analysis of the effects that mobile phone use produces while driving is a topic of great interest for the scientific community. There is consensus that using a mobile phone while driving increases the risk of exposure to traffic accidents. The purpose of this research is to evaluate the drivers' behavior when they decide whether or not to use a mobile phone while driving. For that, a hybrid modeling approach that integrates a choice model with the latent variable "risk perception" was used. It was found that workers and individuals with the highest education level are more prone to use a mobile phone while driving than others. Also, "risk perception" is higher among individuals who have been previously fined and people who have been in an accident or almost been in an accident. It was also found that the tendency to use mobile phones while driving increases when the traffic speed reduces, but it decreases when the fine increases. Even though the urgency of the phone call is the most important explanatory variable in the choice model, the cost of the fine is an important attribute in order to control mobile phone use while driving.

  9. Incorporating Mobile Phone Technologies to Expand Evidence-Based Care.

    PubMed

    Jones, Deborah J; Anton, Margaret; Gonzalez, Michelle; Honeycutt, Amanda; Khavjou, Olga; Forehand, Rex; Parent, Justin

    2015-08-01

    Ownership of mobile phones is on the rise, a trend in uptake that transcends age, region, race, and ethnicity, as well as income. It is precisely the emerging ubiquity of mobile phones that has sparked enthusiasm regarding their capacity to increase the reach and impact of health care, including mental health care. Community-based clinicians charged with transporting evidence-based interventions beyond research and training clinics are in turn, ideally and uniquely situated to capitalize on mobile phone uptake and functionality to bridge the efficacy to effectiveness gap. As such, this article delineates key considerations to guide these frontline clinicians in mobile phone-enhanced clinical practice, including an overview of industry data on the uptake of and evolution in the functionality of mobile phone platforms, conceptual considerations relevant to the integration of mobile phones into practice, representative empirical illustrations of mobile-phone enhanced assessment and treatment, and practical considerations relevant to ensuring the feasibility and sustainability of such an approach.

  10. Cell phones and male infertility: dissecting the relationship.

    PubMed

    Deepinder, Fnu; Makker, Kartikeya; Agarwal, Ashok

    2007-09-01

    There has been a tremendous increase in the use of mobile phones in the past decade and concerns are growing about the possible hazardous effects of radio-frequency electromagnetic waves (EMW) emitted by these devices on human health. Preliminary studies, though with limitations in study design, suggest a possible link between cell phone use and infertility. A recent study found that use of cell phones adversely affects the quality of semen by decreasing the sperm counts, motility, viability and morphology. Evidence of detrimental effect of mobile phones on male fertility is still equivocal as studies have revealed a wide spectrum of possible effects ranging from insignificant effects to variable degrees of testicular damage. Although previous studies suggested a role of cell phone use in male infertility, the mode of action of EMW emitted from cell phones on the male reproductive system is still unclear. EMW can affect the reproductive system via an EMW-specific effect, thermal molecular effect or combination of both. Studies performed on human males are scarce and therefore further studies with a careful design are needed to determine the effect of cell phone use on male-fertilizing potential.

  11. Measured radiofrequency exposure during various mobile-phone use scenarios.

    PubMed

    Kelsh, Michael A; Shum, Mona; Sheppard, Asher R; McNeely, Mark; Kuster, Niels; Lau, Edmund; Weidling, Ryan; Fordyce, Tiffani; Kühn, Sven; Sulser, Christof

    2011-01-01

    Epidemiologic studies of mobile phone users have relied on self reporting or billing records to assess exposure. Herein, we report quantitative measurements of mobile-phone power output as a function of phone technology, environmental terrain, and handset design. Radiofrequency (RF) output data were collected using software-modified phones that recorded power control settings, coupled with a mobile system that recorded and analyzed RF fields measured in a phantom head placed in a vehicle. Data collected from three distinct routes (urban, suburban, and rural) were summarized as averages of peak levels and overall averages of RF power output, and were analyzed using analysis of variance methods. Technology was the strongest predictor of RF power output. The older analog technology produced the highest RF levels, whereas CDMA had the lowest, with GSM and TDMA showing similar intermediate levels. We observed generally higher RF power output in rural areas. There was good correlation between average power control settings in the software-modified phones and power measurements in the phantoms. Our findings suggest that phone technology, and to a lesser extent, degree of urbanization, are the two stronger influences on RF power output. Software-modified phones should be useful for improving epidemiologic exposure assessment.

  12. A machine learning approach for detecting cell phone usage

    NASA Astrophysics Data System (ADS)

    Xu, Beilei; Loce, Robert P.

    2015-03-01

    Cell phone usage while driving is common, but widely considered dangerous due to distraction to the driver. Because of the high number of accidents related to cell phone usage while driving, several states have enacted regulations that prohibit driver cell phone usage while driving. However, to enforce the regulation, current practice requires dispatching law enforcement officers at road side to visually examine incoming cars or having human operators manually examine image/video records to identify violators. Both of these practices are expensive, difficult, and ultimately ineffective. Therefore, there is a need for a semi-automatic or automatic solution to detect driver cell phone usage. In this paper, we propose a machine-learning-based method for detecting driver cell phone usage using a camera system directed at the vehicle's front windshield. The developed method consists of two stages: first, the frontal windshield region localization using the deformable part model (DPM), next, we utilize Fisher vectors (FV) representation to classify the driver's side of the windshield into cell phone usage violation and non-violation classes. The proposed method achieved about 95% accuracy with a data set of more than 100 images with drivers in a variety of challenging poses with or without cell phones.

  13. Modeling the propagation of mobile phone virus under complex network.

    PubMed

    Yang, Wei; Wei, Xi-liang; Guo, Hao; An, Gang; Guo, Lei; Yao, Yu

    2014-01-01

    Mobile phone virus is a rogue program written to propagate from one phone to another, which can take control of a mobile device by exploiting its vulnerabilities. In this paper the propagation model of mobile phone virus is tackled to understand how particular factors can affect its propagation and design effective containment strategies to suppress mobile phone virus. Two different propagation models of mobile phone viruses under the complex network are proposed in this paper. One is intended to describe the propagation of user-tricking virus, and the other is to describe the propagation of the vulnerability-exploiting virus. Based on the traditional epidemic models, the characteristics of mobile phone viruses and the network topology structure are incorporated into our models. A detailed analysis is conducted to analyze the propagation models. Through analysis, the stable infection-free equilibrium point and the stability condition are derived. Finally, considering the network topology, the numerical and simulation experiments are carried out. Results indicate that both models are correct and suitable for describing the spread of two different mobile phone viruses, respectively.

  14. Incorporating Mobile Phone Technologies to Expand Evidence-Based Care

    PubMed Central

    Jones, Deborah J.; Anton, Margaret; Gonzalez, Michelle; Honeycutt, Amanda; Khavjou, Olga; Forehand, Rex; Parent, Justin

    2014-01-01

    Ownership of mobile phones is on the rise, a trend in uptake that transcends age, region, race, and ethnicity, as well as income. It is precisely the emerging ubiquity of mobile phones that has sparked enthusiasm regarding their capacity to increase the reach and impact of health care, including mental health care. Community-based clinicians charged with transporting evidence-based interventions beyond research and training clinics are in turn, ideally and uniquely situated to capitalize on mobile phone uptake and functionality to bridge the efficacy to effectiveness gap. As such, this article delineates key considerations to guide these frontline clinicians in mobile phone-enhanced clinical practice, including an overview of industry data on the uptake of and evolution in the functionality of mobile phone platforms, conceptual considerations relevant to the integration of mobile phones into practice, representative empirical illustrations of mobile-phone enhanced assessment and treatment, and practical considerations relevant to ensuring the feasibility and sustainability of such an approach. PMID:26213458

  15. Mobile phones: Reservoirs for the transmission of nosocomial pathogens

    PubMed Central

    Pal, Shekhar; Juyal, Deepak; Adekhandi, Shamanth; Sharma, Munesh; Prakash, Rajat; Sharma, Neelam; Rana, Amit; Parihar, Ashwin

    2015-01-01

    Background: Global burden of hospital-associated infection (HAI) is on the rise and contributes significantly to morbidity and mortality of the patients. Mobile phones are indispensible part of communication among doctors and other health care workers (HCWs) in hospitals. Hands of HCWs play an important role in transmission of HAI and mobile phones which are seldom cleaned and often touched during or after the examination of patients without hand washing can act as a reservoir for transmission of potent pathogens. This study aimed to investigate the rate of bacterial contamination of mobile phones among HCWs in our tertiary care hospital and to compare it with personal mobile phones of non-HCWs (control group). Materials and Methods: The mobile phones and dominant hands of 386 participants were sampled from four different groups, hospital doctors and staff (132), college faculty and staff (54), medical students (100) and control group (100). Informed consent and questionnaire was duly signed by all the participants. Samples were processed according to standard guidelines. Results: 316 mobile phones (81.8%) and 309 hand swab samples (80%) showed growth of bacterial pathogens. The most predominant isolates were Coagulase-negative Staphylococcus, Staphylococcus aureus, Acinetobacter species, Escherichia coli, Klebsiella pneumoniae, Pseudomonas species and Enterococcus species. Conclusion: Hundred percent contamination was found in mobile phones and hands of HCWs indicating mobile phones can be the potential source of nosocomial pathogens. Our study results suggest that use of mobile phones in health care setup should be restricted only for emergency calls. Strict adherence to infection control policies such as proper hand hygiene practices should be followed. PMID:26322292

  16. Evaluation of a Mobile Phone for Aircraft GPS Interference

    NASA Technical Reports Server (NTRS)

    Nguyen, Truong X.

    2004-01-01

    Measurements of spurious emissions from a mobile phone are conducted in a reverberation chamber for the Global Positioning System (GPS) radio frequency band. This phone model was previously determined to have caused interference to several aircraft GPS receivers. Interference path loss (IPL) factors are applied to the emission data, and the outcome compared against GPS receiver susceptibility. The resulting negative safety margins indicate there are risks to aircraft GPS systems. The maximum emission level from the phone is also shown to be comparable with some laptop computer's emissions, implying that laptop computers can provide similar risks to aircraft GPS receivers.

  17. Fundus imaging with a mobile phone: a review of techniques.

    PubMed

    Shanmugam, Mahesh P; Mishra, Divyansh K C; Madhukumar, R; Ramanjulu, Rajesh; Reddy, Srinivasulu Y; Rodrigues, Gladys

    2014-09-01

    Fundus imaging with a fundus camera is an essential part of ophthalmic practice. A mobile phone with its in-built camera and flash can be used to obtain fundus images of reasonable quality. The mobile phone can be used as an indirect ophthalmoscope when coupled with a condensing lens. It can be used as a direct ophthalmoscope after minimal modification, wherein the fundus can be viewed without an intervening lens in young patients with dilated pupils. Employing the ubiquitous mobile phone to obtain fundus images has the potential for mass screening, enables ophthalmologists without a fundus camera to document and share findings, is a tool for telemedicine and is rather inexpensive.

  18. Photos of shark victim underscore threat from cell phone cameras.

    PubMed

    2010-05-01

    The Health Insurance Portability and Accountability Act (HIPAA) might not specifically address cell phone cameras, but if your staff takes unauthorized photos with their cell phones, they (and you and your facility) likely will be in violation of HIPAA, say legal experts. HIPAA can extend to pictures taken of patients if the information on that picture identifies the individual. New laws on electronic personal health information increase penalties for violations. The surest way to prevent violations is to prohibit cell phone camera use in the ED.

  19. Development of a Disaster Information Collection System using Cellular Phone

    NASA Astrophysics Data System (ADS)

    Jeong, Byeong-Pyo; Zama, Shinsaku; Takizawa, Osamu; Endo, Makoto; Shibayama, Akihiro

    We have developed a prototype of Disaster Information Collection System using Cellular Phone that can be used under the communication congestion after a large earthquake. The person in charge of responses can easily store disaster information such as image, characters and location in a memory card of a cellular phone. We performed the field experiment on usability and simulating disaster information collection with ordinary citizen in Takamastu city, Kagawa Prefecture. Using the system using Cellular Phone, people could easily input such as public telephones, banks, mailboxes searched on their ways.

  20. An application of recurrent nets to phone probability estimation.

    PubMed

    Robinson, A J

    1994-01-01

    This paper presents an application of recurrent networks for phone probability estimation in large vocabulary speech recognition. The need for efficient exploitation of context information is discussed; a role for which the recurrent net appears suitable. An overview of early developments of recurrent nets for phone recognition is given along with the more recent improvements that include their integration with Markov models. Recognition results are presented for the DARPA TIMIT and Resource Management tasks, and it is concluded that recurrent nets are competitive with traditional means for performing phone probability estimation.

  1. Mobile phone collection, reuse and recycling in the UK.

    PubMed

    Ongondo, F O; Williams, I D

    2011-06-01

    Mobile phones are the most ubiquitous electronic product on the globe. They have relatively short lifecycles and because of their (perceived) in-built obsolescence, discarded mobile phones represent a significant and growing problem with respect to waste electrical and electronic equipment (WEEE). An emerging and increasingly important issue for industry is the shortage of key metals, especially the types of metals found in mobile phones, and hence the primary aim of this timely study was to assess and evaluate the voluntary mobile phone takeback network in the UK. The study has characterised the information, product and incentives flows in the voluntary UK mobile phone takeback network and reviewed the merits and demerits of the incentives offered. A survey of the activities of the voluntary mobile phone takeback schemes was undertaken in 2008 to: identify and evaluate the takeback schemes operating in the UK; determine the target groups from whom handsets are collected; and assess the collection, promotion and advertising methods used by the schemes. In addition, the survey sought to identify and critically evaluate the incentives offered by the takeback schemes, evaluate their ease and convenience of use; and determine the types, qualities and quantities of mobile phones they collect. The study has established that the UK voluntary mobile phone takeback network can be characterised as three distinctive flows: information flow; product flow (handsets and related accessories); and incentives flow. Over 100 voluntary schemes offering online takeback of mobile phone handsets were identified. The schemes are operated by manufacturers, retailers, mobile phone network service operators, charities and by mobile phone reuse, recycling and refurbishing companies. The latter two scheme categories offer the highest level of convenience and ease of use to their customers. Approximately 83% of the schemes are either for-profit/commercial-oriented and/or operate to raise funds

  2. Dial D for Distraction: The Making and Breaking of Cell Phone Policies in the College Classroom

    ERIC Educational Resources Information Center

    Berry, Michael J.; Westfall, Aubrey

    2015-01-01

    Cell phones are nearly ubiquitous in the college classroom. This study asks two primary questions regarding the making and breaking of in-class cell phone policies. In what manner are students using their phones and how can faculty members minimize the potential for phone-related distractions? To answer these questions we analyze original survey…

  3. Recent Court Rulings regarding Student Use of Cell Phones in Today's Schools

    ERIC Educational Resources Information Center

    Diamantes, Thomas

    2010-01-01

    Student use of cell phone is a new area of concern in today's schools. Cell phone providers have attempted to convince parents that each child should be provided with their own cell phone for safety reasons and to stay in contact with their families. This has resulted in many students arriving at school with a cell phone, taking it to class and…

  4. Observing Cell Phone Use and Enhancing Collaborative Learning Using a Wiki

    ERIC Educational Resources Information Center

    Tolman, Elizabeth G.

    2013-01-01

    Cell phone use is evident in society. Individuals have cell phone conversations while waiting in line at the grocery store, glance at their cell phones during meetings, check Facebook while having dinner with friends, have a meaningful phone conversation with a parent, and even text while sitting in church service. This assignment provides…

  5. An update on mobile phones interference with medical devices.

    PubMed

    Mahmoud Pashazadeh, Ali; Aghajani, Mahdi; Nabipour, Iraj; Assadi, Majid

    2013-10-01

    Mobile phones' electromagnetic interference with medical devices is an important issue for the medical safety of patients who are using life-supporting medical devices. This review mainly focuses on mobile phones' interference with implanted medical devices and with medical equipment located in critical areas of hospitals. A close look at the findings reveals that mobile phones may adversely affect the functioning of medical devices, and the specific effect and the degree of interference depend on the applied technology and the separation distance. According to the studies' findings and the authors' recommendations, besides mitigating interference, using mobile phones at a reasonable distance from medical devices and developing technology standards can lead to their effective use in hospital communication systems.

  6. Effect of smart phone use on dynamic postural balance.

    PubMed

    Cho, Sung-Hak; Choi, Mun-Hee; Goo, Bong-Oh

    2014-07-01

    [Purpose] The present study investigated what kind of effect smart phone use has on dynamic postural balance. [Subjects] The study subjects were 30 healthy students in their 20's who were recruited from a University in Busan, Korea. [Methods] The present experiment was quasi-experimental research which measured the postural balance (Biodex) of subjects while they sent text messages via smart phones in the standing position with the eyes open, and while they used two-way SNS. [Results] There were significant differences between standing and the dual-task situations. Among dual tasks using smart phones, SNS using situations showed the highest instability. [Conclusion] The use of smart phones in less stable conditions such as while walking or in moving vehicles should be discouraged.

  7. iShake: Mobile Phones as Seismic Sensors (Invited)

    NASA Astrophysics Data System (ADS)

    Dashti, S.; Reilly, J.; Bray, J. D.; Bayen, A. M.; Glaser, S. D.; Mari, E.

    2010-12-01

    Emergency responders must “see” the effects of an earthquake clearly and rapidly so that they can respond effectively to the damage it has produced. Great strides have been made recently in developing methodologies that deliver rapid and accurate post-earthquake information. However, shortcomings still exist. The iShake project is an innovative use of cell phones and information technology to bridge the gap between the high quality, but sparse, ground motion instrument data that are used to help develop ShakeMap and the low quality, but large quantity, human observational data collected to construct a “Did You Feel It?” (DYFI)-based map. Rather than using people as measurement “devices” as is being done through DYFI, the iShake project is using their cell phones to measure ground motion intensity parameters and automatically deliver the data to the U.S. Geological Survey (USGS) for processing and dissemination. In this participatory sensing paradigm, quantitative shaking data from numerous cellular phones will enable the USGS to produce shaking intensity maps more accurately than presently possible. The phone sensor, however, is an imperfect device with performance variations among phones of a given model as well as between models. The sensor is the entire phone, not just the micro-machined transducer inside. A series of 1-D and 3-D shaking table tests were performed at UC San Diego and UC Berkeley, respectively, to evaluate the performance of a class of cell phones. In these tests, seven iPhones and iPod Touch devices that were mounted at different orientations were subjected to 124 earthquake ground motions to characterize their response and reliability as seismic sensors. The testing also provided insight into the seismic response of unsecured and falling instruments. The cell phones measured seismic parameters such as peak ground acceleration (PGA), peak ground velocity (PGV), peak ground displacement (PGD), and 5% damped spectral accelerations well

  8. Mobile phones and elderly people: a noisy communication.

    PubMed

    Stamato, Cláudia; Moraes, Anamaria de

    2012-01-01

    Knowing the users is capital for building user-friendly digital interfaces. One way to think about the users is considering their familiarity with this technology. This article presents the results of twelve interviews with elderly people residing in the so-called South Zone of Rio de Janeiro (Brazil) who have used mobile phones over at least one year. It is part of the Doctor's Thesis "Mobile phones for elderly people - usability for social integration" ("Celulares para idosos - usabilidade a serviço da integração social"), which is targeted at ascertaining if the current mobile phones are user-friendly for elderly people. Through the technique of Guided Interviews, we found usage time, criteria for choice of phones, reasons for changes, preferences, and manners of use. Preliminarily, we have noticed differences in the behavior of the participating users and performed a qualitative analysis according to groups of age and gender.

  9. Mobile phone radiation and the risk of cancer; a review.

    PubMed

    Abdus-salam, A; Elumelu, T; Adenipekun, A

    2008-06-01

    With the licensing of mobile phone operators about 7 years ago, Nigeria joined many countries where worries about the health risks (including carcinogenesis) of mobile phones have become common. Opinions have also been expressed by many, some of which were inaccurate in the light of scientific evidence. This article reviewed the current scientific evidence of the role of mobile phones as possible cancer risk. The preponderance of published research works over several decades including some with over ten years of follow up have not demonstrated any significant increase in cancer among mobile phone users. However, the need for caution is emphasized as it may take up to four decades for carcinogenesis to become fully apparent.

  10. Optical design of camera optics for mobile phones

    NASA Astrophysics Data System (ADS)

    Steinich, Thomas; Blahnik, Vladan

    2012-03-01

    At present, compact camera modules are included in many mobile electronic devices such as mobile phones, personal digital assistants or tablet computers. They have various uses, from snapshots of everyday situations to capturing barcodes for product information. This paper presents an overview of the key design challenges and some typical solutions. A lens design for a mobile phone camera is compared to a downscaled 35 mm format lens to demonstrate the main differences in optical design. Particular attention is given to scaling effects.

  11. Road safety and the tsunami of cell phones.

    PubMed

    Taggi, F; Crenca, A; Cedri, C; Giustini, M; Dosi, G; Marturano, P

    2007-01-01

    In the last years an extremely rapid massive diffusion of the cell phones is occurred. Currently in Italy, as in many other countries, almost all the youngsters and a lot of adults possess a cell phones. This device is enormously useful, but its use can determine negative effects on the user's attention, i.e. during vehicle driving. Numerous epidemiological studies show that cell phone use in driving determines a relative risk of causing a road accident around 4 (equivalent to driving with 0.8 g/l blood alcohol concentration), for both hands-held and hands-free devices. This risk doesn't seem well perceived from the Italian drivers: as our surveys show, the 2.5% of them use a cellular hands-held while driving. This situation appears to evolve toward more critical conditions, given the quick diffusion of ever more technologically advanced instruments, such as video-cell phones, mostly capable of capturing the attention, or TV-cell phones, with which the distracting occasions could be more frequent and prolonged. The use of the cell phone seems to imply an important risk for pedestrians: the first results of the monitoring results that we are producing on this matter in Rome show that the 5.5% of the pedestrians cross the road while talking with a hands-held cell phones, in the most of cases ignoring the traffic conditions at all. All this facts show the urgency to promote specific actions of prevention, in absence of which it is reasonable to foresee a consistent growth in the number of road traffic accidents. In our opinion it is necessary to capillarily inform the public of the signalled risks, possibly also in the advertising spaces of the producers and managers of the cellular telephony, apart obvious repressive actions on the use of the cell phones during the guide of a vehicle.

  12. Walking stability during cell phone use in healthy adults.

    PubMed

    Kao, Pei-Chun; Higginson, Christopher I; Seymour, Kelly; Kamerdze, Morgan; Higginson, Jill S

    2015-05-01

    The number of falls and/or accidental injuries associated with cellular phone use during walking is growing rapidly. Understanding the effects of concurrent cell phone use on human gait may help develop safety guidelines for pedestrians. It was shown previously that older adults had more pronounced dual-task interferences than younger adults when concurrent cognitive task required visual information processing. Thus, cell phone use might have greater impact on walking stability in older than in younger adults. This study examined gait stability and variability during a cell phone dialing task (phone) and two classic cognitive tasks, the Paced Auditory Serial Addition Test (PASAT) and Symbol Digit Modalities Test (SDMT). Nine older and seven younger healthy adults walked on a treadmill at four different conditions: walking only, PASAT, phone, and SDMT. We computed short-term local divergence exponent (LDE) of the trunk motion (local stability), dynamic margins of stability (MOS), step spatiotemporal measures, and kinematic variability. Older and younger adults had similar values of short-term LDE during all conditions, indicating that local stability was not affected by the dual-task. Compared to walking only, older and younger adults walked with significantly greater average mediolateral MOS during phone and SDMT conditions but significantly less ankle angle variability during all dual-tasks and less knee angle variability during PASAT. The current findings demonstrate that healthy adults may try to control foot placement and joint kinematics during cell phone use or another cognitive task with a visual component to ensure sufficient dynamic margins of stability and maintain local stability.

  13. Stereovision Imaging in Smart Mobile Phone Using Add on Prisms

    NASA Astrophysics Data System (ADS)

    Bar-Magen Numhauser, Jonathan; Zalevsky, Zeev

    2014-03-01

    In this work we present the use of a prism-based add on component installed on top of a smart phone to achieve stereovision capabilities using iPhone mobile operating system. Through these components and the combination of the appropriate application programming interface and mathematical algorithms the obtained results will permit the analysis of possible enhancements for new uses to such system, in a variety of areas including medicine and communications.

  14. iPhone examination with modern forensic software tools

    NASA Astrophysics Data System (ADS)

    Höne, Thomas; Kröger, Knut; Luttenberger, Silas; Creutzburg, Reiner

    2012-06-01

    The aim of the paper is to show the usefulness of modern forensic software tools for iPhone examination. In particular, we focus on the new version of Elcomsoft iOS Forensic Toolkit and compare it with Oxygen Forensics Suite 2012 regarding functionality, usability and capabilities. It is shown how these software tools works and how capable they are in examining non-jailbreaked and jailbreaked iPhones.

  15. The uses of the iPhone for surgeons.

    PubMed

    Dala-Ali, Benan M; Lloyd, Mary Anne; Al-Abed, Yahya

    2011-02-01

    Mobile technology is continuously improving and it is important that all physicians are aware of its new advances. Smartphones have the potential to improve diagnostic skills and education of a surgeon. The iPhone is a popular type of smartphone in the market. This article intends to educate surgeons about its uses, functions and medical applications. The phone is an invaluable tool for the modern day surgeon.

  16. [Cell phone communication: hygienic characteristics, biological action, standardization (a review)].

    PubMed

    Gudina, M V; Volkotrub, L P

    2010-01-01

    The paper considers the topical issues concerning the functioning of the cellular communication system. It provides the hygienic characteristics of its individual elements. The factors influencing the size of an electromagnetic field generated by mobile phones are stated. Research data on the impact of electromagnetic radiation from a mobile phone on users' health are reviewed. The pivots of present-day Russian hygienic rating regarding the permissible exposures to nonionizing electromagnetic energy generated by the elements of the cellular communication system are identified.

  17. Team Faces Tough Odds to Implement New Phone Network | Poster

    Cancer.gov

    It was a Saturday, in the final stretch of winter in late February, and the temperature peaked to a pleasant 66 degrees. Many people were outside enjoying the spring-like weather; however, the Voice over Internet Protocol (VoIP) Deployment Team was hard at work at Industry Lane. The team of 10 was installing the new voice-only network, including deploying 145 phones, switching and testing the 911 feature, connecting wall mounts, and verifying each phone... Read more

  18. Walking Stability during Cell Phone Use in Healthy Adults

    PubMed Central

    Kao, Pei-Chun; Higginson, Christopher I.; Seymour, Kelly; Kamerdze, Morgan; Higginson, Jill S.

    2015-01-01

    The number of falls and/or accidental injuries associated with cellular phone use during walking is growing rapidly. Understanding the effects of concurrent cell phone use on human gait may help develop safety guidelines for pedestrians. It was shown previously that older adults had more pronounced dual-task interferences than younger adults when concurrent cognitive task required visual information processing. Thus, cell phone use might have greater impact on walking stability in older than in younger adults. This study examined gait stability and variability during a cell phone dialing task (phone) and two classic cognitive tasks, the Paced Auditory Serial Addition Test (PASAT) and Symbol Digit Modalities Test (SDMT). Nine older and seven younger healthy adults walked on a treadmill at four different conditions: walking only, PASAT, phone, and SDMT. We computed short-term local divergence exponent (LDE) of the trunk motion (local stability), dynamic margins of stability (MOS), step spatiotemporal measures, and kinematic variability. Older and younger adults had similar values of short-term LDE during all conditions, indicating that local stability was not affected by the dual-task. Compared to walking only, older and younger adults walked with significantly greater average mediolateral MOS during phone and SDMT conditions but significantly less ankle angle variability during all dual-tasks and less knee angle variability during PASAT. The current findings demonstrate that healthy adults may try to control foot placement and joint kinematics during cell phone use or another cognitive task with a visual component to ensure sufficient dynamic margins of stability and maintain local stability. PMID:25890490

  19. What Can You Learn from a Cell Phone? Almost Anything!

    ERIC Educational Resources Information Center

    Prensky, Marc

    2005-01-01

    Today's high-end cell phones have the computing power of a mid-1990s personal computer (PC)--while consuming only one one-hundredth of the energy. Even the simplest, voice-only phones have more complex and powerful chips than the 1969 on-board computer that landed a spaceship on the moon. In the United States, it is almost universally acknowledged…

  20. Identification of Mobile Phone and Analysis of Original Version of Videos through a Delay Time Analysis of Sound Signals from Mobile Phone Videos.

    PubMed

    Hwang, Min Gu; Har, Dong Hwan

    2017-02-15

    This study designs a method of identifying the camera model used to take videos that are distributed through mobile phones and determines the original version of the mobile phone video for use as legal evidence. For this analysis, an experiment was conducted to find the unique characteristics of each mobile phone. The videos recorded by mobile phones were analyzed to establish the delay time of sound signals, and the differences between the delay times of sound signals for different mobile phones were traced by classifying their characteristics. Furthermore, the sound input signals for mobile phone videos used as legal evidence were analyzed to ascertain whether they have the unique characteristics of the original version. The objective of this study was to find a method for validating the use of mobile phone videos as legal evidence using mobile phones through differences in the delay times of sound input signals.

  1. Measurements of skin surface temperature during mobile phone use.

    PubMed

    Anderson, V; Rowley, J

    2007-02-01

    We measured maximum temperature rises on the side of the face after 6 min of continuous mobile phone operation using two models of AMPS analog phones operating in the 835 MHz band and three early model GSM digital phones operating in the 900 MHz band. For the GSM phones the highest recorded temperature rise difference was 2.3 degrees C and for the AMPS phones it was 4.5 degrees C, both at locations on the cheek. The higher differential temperature rise between AMPS and GSM may reflect the higher maximum average operating power of AMPS (600 mW) versus GSM900 (250 mW). Additionally, we compared temperature changes at a consistent location on the cheek for an AMPS phone that was inoperative (-0.7 degrees C), transmitting at full power (+2.6 degrees C) and in stand-by mode (+2.0 degrees C). Our results suggest that direct RF heating of the skin only contributes a small part of the temperature rise and that most is due to heat conduction from the handset.

  2. [Mobile phones radiate--risk to the health?].

    PubMed

    Jokela, Kari; Auvinen, Anssi; Hämäläinen, Heikki

    2011-01-01

    The mobile phones radiate electromagnetic energy which is partly absorbed into the tissues in the vicinity of the phone. The minor heating, in maximum up to 0.3 degrees C, may cause some alterations in the expression of genes and proteins similar to physiological response to other stimuli. Biophysical studies at the cellular and molecular level have not revealed any well established interaction mechanism, through which mobile phone radiation could induce toxic effects below the thermal effect level. Research results on various biological effects in vitro and in vivo are continuously published but there is no consistent evidence on well established harmful effects. The mobile phone radiation is not carcinogenic for experimental animals or genotoxic for cells. According to epidemiological studies and psychophysiological brain function studies the use of mobile phones does not seem to increase the risk of tumors in the head and brain or disturb the function of central nervous system. However, there is a need for more research on the long-term effects of mobile phone radiation particularly on children.

  3. Research the mobile phone operation interfaces for vision-impairment.

    PubMed

    Yao, Yen-Ting; Leung, Cherng-Yee

    2012-01-01

    Due to the vision-impaired users commonly having difficulty with mobile-phone function operations and adaption any manufacturer's user interface design, the goals for this research are established for evaluating how to improve for them the function operation convenience and user interfaces of either mobile phones or electronic appliances in the market currently. After applying collecting back 30 effective questionnaires from 30 vision-impairment, the comments have been concluded from this research include: (1) All mobile phone manufactures commonly ignorant of the vision-impairment difficulty with operating mobile phone user interfaces; (2) The vision-impairment preferential with audio alert signals; (3) The vision-impairment incapable of mobile-phone procurement independently unless with assistance from others; (4) Preferential with adding touch-usage interface design by the vision-impairment; in contrast with the least requirement for such functions as braille, enlarging keystroke size and diversifying-function control panel. With exploring the vision-impairment's necessary improvements and obstacles for mobile phone interface operation, this research is established with goals for offering reference possibly applied in electronic appliance design and . Hopefully, the analysis results of this research could be used as data references for designing electronic and high-tech products and promoting more usage convenience for those vision-impaired.

  4. Micronucleus frequency in buccal mucosa cells of mobile phone users.

    PubMed

    Hintzsche, Henning; Stopper, Helga

    2010-03-01

    Mobile phones are being used extensively throughout the world, with more than four billion accounts existing in 2009. This technology applies electromagnetic radiation in the microwave range. Health effects of this radiation have been subject of debate for a long time, both within the scientific community and within the general public. This study investigated the effect of mobile phone use on genomic instability of the human oral cavity's mucosa cells. 131 Individuals donated buccal mucosa cells extracted by slightly scraping the oral cavity with a cotton swab. Every participant filled out a questionnaire about mobile phone use including duration of weekly use, overall period of exposure and headset usage. 13 Individuals did not use mobile phones at all, 85 reported using the mobile phone for three hours per week or less, and 33 reported use of more than three hours per week. Additionally, information on age, gender, body weight, smoking status, medication and nutrition was retrieved. For staining of the cells a procedure using alpha-tubulin-antibody and chromomycin A(3) was applied. Micronuclei and other markers were evaluated in 1000 cells per individual at the microscope. A second scorer counted another 1000 cells, resulting in 2000 analyzed cells per individual. Mobile phone use did not lead to a significantly increased frequency of micronuclei.

  5. The advanced use of mobile phones in five European countries.

    PubMed

    Fortunati, Leopoldina; Taipale, Sakari

    2014-06-01

    The paper explores the advanced users of mobile phones in Italy, France, Germany, Spain and the UK (EU5 countries) and aims to clarify the social meaning of advanced use. The mobile phone is seen as a strategic tool of social labour, whose capabilities are exploited to a different extent in the five studied countries. The analysis is based on a cross-national survey data collected in 2009 (N = 7,255). First, the results show that there are substantial differences in the advanced use of mobile phone and its predictors in Europe. Generally, only about one third of the studied mobile features are exploited. British and French people are the most advanced users, followed by German, Spanish and Italians. While Italians have stuck to early developed mobile phone features, Britons especially have continued to adopt the newer properties of the mobile phone. Second, the article shows that owing to the extensive under-utilization of its features, the mobile phone as a tool of social labour is efficiently exploited by only a small number of people. They, however, constitute technological vanguards that make use of the diverse features in different countries. This limited use of advanced features results in the new patterns of social stratification.

  6. Real versus Simulated Mobile Phone Exposures in Experimental Studies

    PubMed Central

    Panagopoulos, Dimitris J.; Johansson, Olle; Carlo, George L.

    2015-01-01

    We examined whether exposures to mobile phone radiation in biological/clinical experiments should be performed with real-life Electromagnetic Fields (EMFs) emitted by commercially available mobile phone handsets, instead of simulated EMFs emitted by generators or test phones. Real mobile phone emissions are constantly and unpredictably varying and thus are very different from simulated emissions which employ fixed parameters and no variability. This variability is an important parameter that makes real emissions more bioactive. Living organisms seem to have decreased defense against environmental stressors of high variability. While experimental studies employing simulated EMF-emissions present a strong inconsistency among their results with less than 50% of them reporting effects, studies employing real mobile phone exposures demonstrate an almost 100% consistency in showing adverse effects. This consistency is in agreement with studies showing association with brain tumors, symptoms of unwellness, and declines in animal populations. Average dosimetry in studies with real emissions can be reliable with increased number of field measurements, and variation in experimental outcomes due to exposure variability becomes less significant with increased number of experimental replications. We conclude that, in order for experimental findings to reflect reality, it is crucially important that exposures be performed by commercially available mobile phone handsets. PMID:26346766

  7. PhoneSat In-flight Experience Results

    NASA Technical Reports Server (NTRS)

    Salas, Alberto Guillen; Attai, Watson; Oyadomari, Ken Y.; Priscal, Cedric; Schimmin, Rogan S.; Gazulla, Oriol Tintore; Wolfe, Jasper L.

    2014-01-01

    Over the last decade, consumer technology has vastly improved its performances, become more affordable and reduced its size. Modern day smartphones offer capabilities that enable us to figure out where we are, which way we are pointing, observe the world around us, and store and transmit this information to wherever we want. These capabilities are remarkably similar to those required for multi-million dollar satellites. The PhoneSat project at NASA Ames Research Center is building a series of CubeSat-size spacecrafts using an off-the-shelf smartphone as its on-board computer with the goal of showing just how simple and cheap space can be. Since the PhoneSat project started, different suborbital and orbital flight activities have proven the viability of this revolutionary approach. In early 2013, the PhoneSat project launched the first triage of PhoneSats into LEO. In the five day orbital life time, the nano-satellites flew the first functioning smartphone-based satellites (using the Nexus One and Nexus S phones), the cheapest satellite (a total parts cost below $3,500) and one of the fastest on-board processors (CPU speed of 1GHz). In this paper, an overview of the PhoneSat project as well as a summary of the in-flight experimental results is presented.

  8. Cell Phone Use and Child and Adolescent Reading Proficiency.

    PubMed

    Hofferth, Sandra L; Moon, Ui Jeong

    2012-04-01

    This study examined the association between cell phone use, including minutes spent talking and number of text messages sent, and two measures of children's reading proficiency - tests of word decoding and reading comprehension - in the United States. Data were drawn from the Child Development Supplement to the Panel Study of Income Dynamics, a nationally representative survey of 1,147 children 10-18 in 2009. Children whose parents were better educated, who had higher family incomes, who had fewer siblings, and who lived in urban areas were more likely to own or share a cell phone. Among those with access to a phone, children who spent more time talking on the phone were less proficient at word decoding, whereas children who spent more time sending text messages had greater reading comprehension. Although girls spent more time texting than did boys, there were no gender differences in the association between time spent talking or number of text messages sent with achievement. In spite of racial/ethnic differences in cell phone use levels, there were no racial/ethnic differences in the association between cell phone use and reading proficiency.

  9. Dynamic population mapping using mobile phone data.

    PubMed

    Deville, Pierre; Linard, Catherine; Martin, Samuel; Gilbert, Marius; Stevens, Forrest R; Gaughan, Andrea E; Blondel, Vincent D; Tatem, Andrew J

    2014-11-11

    During the past few decades, technologies such as remote sensing, geographical information systems, and global positioning systems have transformed the way the distribution of human population is studied and modeled in space and time. However, the mapping of populations remains constrained by the logistics of censuses and surveys. Consequently, spatially detailed changes across scales of days, weeks, or months, or even year to year, are difficult to assess and limit the application of human population maps in situations in which timely information is required, such as disasters, conflicts, or epidemics. Mobile phones (MPs) now have an extremely high penetration rate across the globe, and analyzing the spatiotemporal distribution of MP calls geolocated to the tower level may overcome many limitations of census-based approaches, provided that the use of MP data is properly assessed and calibrated. Using datasets of more than 1 billion MP call records from Portugal and France, we show how spatially and temporarily explicit estimations of population densities can be produced at national scales, and how these estimates compare with outputs produced using alternative human population mapping methods. We also demonstrate how maps of human population changes can be produced over multiple timescales while preserving the anonymity of MP users. With similar data being collected every day by MP network providers across the world, the prospect of being able to map contemporary and changing human population distributions over relatively short intervals exists, paving the way for new applications and a near real-time understanding of patterns and processes in human geography.

  10. Mobile Phone Overuse Among Elementary School Students in Korea: Factors Associated With Mobile Phone Use as a Behavior Addiction.

    PubMed

    Kim, Ran; Lee, Kwang-Ja; Choi, Yun-Jung

    2015-01-01

    This research was conducted to examine the relationships among mobile phone use, anxiety, and parental attitudes toward child-rearing in a convenience sample of 351 Grade 6 elementary school students. There were 157 boys and 194 girls. A mobile phone overuse questionnaire, the State-Trait Anxiety Inventory, and the Parental Attitude Inventory were used for data collection. The data were analyzed by the t test, analysis of variance, hierarchical regression, and descriptive analysis using SPSS WIN 18.0. Mobile phone use was greater in girls than in boys, and the difference was statistically significant. Mobile phone use was positively correlated with anxiety, and it was negatively correlated with parental child-raising attitudes. Mobile phone use in girls was mainly affected by anxiety, and in boys, it was significantly affected by the maternal child-raising attitude. This research provides basic data for parent education, school policy, and prevention programs about mobile phone overuse that support mental health improvement in the individual, family, and community.

  11. Benefits of Mobile Phone Technology for Personal Environmental Monitoring

    PubMed Central

    Carrasco-Turigas, Glòria; Seto, Edmund; Jerrett, Michael; Nieuwenhuijsen, Mark J

    2016-01-01

    Background Tracking individuals in environmental epidemiological studies using novel mobile phone technologies can provide valuable information on geolocation and physical activity, which will improve our understanding of environmental exposures. Objective The objective of this study was to assess the performance of one of the least expensive mobile phones on the market to track people's travel-activity pattern. Methods Adults living and working in Barcelona (72/162 bicycle commuters) carried simultaneously a mobile phone and a Global Positioning System (GPS) tracker and filled in a travel-activity diary (TAD) for 1 week (N=162). The CalFit app for mobile phones was used to log participants’ geographical location and physical activity. The geographical location data were assigned to different microenvironments (home, work or school, in transit, others) with a newly developed spatiotemporal map-matching algorithm. The tracking performance of the mobile phones was compared with that of the GPS trackers using chi-square test and Kruskal-Wallis rank sum test. The minute agreement across all microenvironments between the TAD and the algorithm was compared using the Gwet agreement coefficient (AC1). Results The mobile phone acquired locations for 905 (29.2%) more trips reported in travel diaries than the GPS tracker (P<.001) and had a median accuracy of 25 m. Subjects spent on average 57.9%, 19.9%, 9.0%, and 13.2% of time at home, work, in transit, and other places, respectively, according to the TAD and 57.5%, 18.8%, 11.6%, and 12.1%, respectively, according to the map-matching algorithm. The overall minute agreement between both methods was high (AC1 .811, 95% CI .810-.812). Conclusions The use of mobile phones running the CalFit app provides better information on which microenvironments people spend their time in than previous approaches based only on GPS trackers. The improvements of mobile phone technology in microenvironment determination are because the mobile

  12. Mobile Phone Dermatitis in Children and Adults: A Review of the Literature

    PubMed Central

    Richardson, Clare; Hamann, Dathan; Thyssen, Jacob P.

    2014-01-01

    Background: Mobile phones have been reported to cause allergic contact dermatitis (ACD). Methods: A comprehensive online literature review was conducted through the National Library of Medicine (Pubmed MEDLINE) using appropriate medical subject headings and keywords. Results: Thirty-seven cases of mobile phone-related ACD were found. Six studies evaluating allergen release from mobile phones were found. Conclusions: Case reports of mobile phone-associated ACD have risen rapidly in number since 2000. Case reports highlight mobile phone ACD in both pediatric and adult populations in many countries. Metal allergens, notably nickel and chromium, were frequently implicated in mobile phone associated ACD. Nickel release from mobile phones appears to be common and has been reported in both cheap and expensive mobile phones, including phones covered under the EU Nickel Directive. PMID:24963454

  13. Cell Phone Information Seeking Explains Blood Pressure in African American Women.

    PubMed

    Jones, Lenette M; Veinot, Tiffany C; Pressler, Susan J

    2017-01-01

    Although cell phone use and Internet access via cell phone is not marked by racial disparities, little is known about how cell phone use relates to blood pressure and health information seeking behaviors. The purposes of this study were to (a) describe Internet activities, cell phone use, and information seeking; (b) determine differences in blood pressure and information seeking between cell phone information seekers and nonseekers; and (c) examine cell phone information seeking as a predictor of blood pressure in African American women. Participants ( N = 147) completed a survey and had their blood pressure measured. Independent-sample t tests showed a significant difference in systolic blood pressure in cell phone information seekers and nonseekers. Linear regression revealed cell phone information seeking as an independent predictor of systolic blood pressure, despite confounders. It is possible that cell phone information seekers were using health information to make decisions about self-management of blood pressure.

  14. [Mobile phone abuse or addiction. A review of the literature].

    PubMed

    Pedrero Pérez, Eduardo J; Rodríguez Monje, María Teresa; Ruiz Sánchez De León, José María

    2012-01-01

    The mobile phone is a relatively new technological tool, versatile and accessible, and very attractive, especially for young people, but whose use involves a risk of abuse and addictive behavior. In recent years there has been increasing interest in this problem, especially in view of the fact that it involves an increasingly younger population. The aim of this paper is to review the current state of scientific knowledge about cell phone addiction/abuse. To this end, a search was carried out in international databases, using the descriptors "mobile phone", "cellular telephones", "addiction" and "abuse", and focusing on prevalence studies, diagnostic tests, associations with psychological variables and gender differences. There is a conceptual vagueness about the concepts of abuse and addiction in relation to mobile phones, and wide disparity in the adoption of diagnostic criteria; moreover, there are numerous instruments for the assessment of these concepts. As a result, the estimated prevalence ranges from 0-38%, depending on the scale used and the characteristics of the population studied. Surprisingly, self-attribution of cell phone addiction exceeds the prevalence estimated in the studies themselves. The personality trait most consistently associated with addiction is low self-esteem, though extraversion is associated with more intense use. Women with low self-esteem are the most vulnerable group, and the most commonly associated psychopathological symptom was depression. In short, while the evidence suggests a problem in relation to mobile phone use, the vagueness of the cell phone addiction concept and the poor quality of the studies make it difficult to generalize the results. It is necessary to define and unify criteria with a view to carrying out quality studies that permit appropriate comparisons.

  15. Maternal Health Phone Line: Saving Women in Papua New Guinea

    PubMed Central

    Watson, Amanda H.A.; Sabumei, Gaius; Mola, Glen; Iedema, Rick

    2015-01-01

    This paper presents the findings of a research project which has involved the establishment of a maternal health phone line in Milne Bay Province of Papua New Guinea (PNG). Mobile phones and landline phones are key information and communication technologies (ICTs). This research study uses the “ICTs for healthcare development” model to ascertain benefits and barriers to the successful implementation of the Childbirth Emergency Phone. PNG has a very high maternal mortality rate. The “three stages of delay” typology was developed by Thaddeus and Maine to determine factors that might delay provision of appropriate medical treatment and hence increase risk of maternal death. The “three stages of delay” typology has been utilised in various developing countries and also in the present study. Research undertaken has involved semi-structured interviews with health workers, both in rural settings and in the labour ward in Alotau. Additional data has been gathered through focus groups with health workers, analysis of notes made during phone calls, interviews with women and community leaders, observations and field visits. One hundred percent of interviewees (n = 42) said the project helped to solve communication barriers between rural health workers and Alotau Provincial Hospital. Specific examples in which the phone line has helped to create positive health outcomes will be outlined in the paper, drawn from research interviews. The Childbirth Emergency Phone project has shown itself to play a critical role in enabling healthcare workers to address life-threatening childbirth complications. The project shows potential for rollout across PNG; potentially reducing maternal morbidity and maternal mortality rates by overcoming communication challenges. PMID:25923199

  16. Mobile phone ownership and use among school children in three Hungarian cities.

    PubMed

    Mezei, Gabor; Benyi, Maria; Muller, Agnes

    2007-05-01

    In spite of rapid worldwide increase in mobile phone use and public concerns about associated potential health effects, little is known about patterns of mobile phone ownership and use in the general population and among children. In April 2005, we conducted a survey of mobile phone ownership and use among fourth grade school children in three Hungarian cities. From 24 schools, 1301 student filled out a short, self-administered questionnaire on basic demographics, mobile phone ownership, pattern of mobile phone use, and after-school activities. Overall, 989 students (76%) owned a mobile phone. Three hundred thirteen students (24%) used a mobile phone daily to make phone calls, and an additional 427 students (33%) used mobile phones for phone calls at least several times per week. Sixty-six students (5%) sent text messages daily and an additional 308 students (24%) sent text messages at least several times per week. Girls, children with no siblings, children who were members of a sport club, and children who played computer games daily were more likely to own and use mobile phones regularly. A higher number of socially disadvantaged children in a class predicted lower likelihood of regular mobile phone use among children. Our results suggest that mobile phone ownership and regular use is highly prevalent among school children in Hungary. Due to rapid changes in ownership patterns follow up surveys will be required to obtain information on temporal trends and changes in mobile phone ownership and pattern of use among school children.

  17. Cell Phone Intervention to Improve Adherence

    PubMed Central

    Marciel, Kristen K.; Saiman, Lisa; Quittell, Lynne M.; Dawkins, Kevin; Quittner, Alexandra L.

    2010-01-01

    Summary Background Treatment regimens for patients with cystic fibrosis (CF) are time-consuming and complex, resulting in consistently low adherence rates. To date, few studies have evaluated innovative technologies to improve adherence in this population. Current infection control guidelines for patients with CF seek to minimize patient-to-patient transmission of potential pathogens. Thus, interventions must avoid face-to-face contact and be delivered individually, limiting opportunities for peer support. This study aimed to develop and assess a web-enabled cell phone, CFFONE™, designed to provide CF information and social support to improve adherence in adolescents with CF. Methods The acceptability, feasibility, and utility of CFFONE™ were evaluated with health care professionals (n = 17) adolescents with CF aged 11–18 years old (n = 12), adults with CF aged 21–36 years old (n = 6), parents of adolescents with CF (n = 12), and technology experts (n = 8). Adolescents also tested a prototype of CFFONE™ (n = 9). Qualitative and quantitative data were collected. Results Focus group data with health care = professionals indicated a need for this intervention, and indicated that CFFONE™ would be likely to improve knowledge and social support, and somewhat likely to improve adherence. Adolescent, adults, and parents all rated CFFONE™ as likely to improve adherence. Technology experts rated the prototype design and format as appropriate. Conclusions The current study provided some support from key stakeholders for this intervention to improve adherence in adolescents with CF. Next steps include a multi-center trial of the efficacy and safety of CFFONE™. PMID:20054860

  18. Dynamic population mapping using mobile phone data

    PubMed Central

    Deville, Pierre; Martin, Samuel; Gilbert, Marius; Stevens, Forrest R.; Gaughan, Andrea E.; Blondel, Vincent D.; Tatem, Andrew J.

    2014-01-01

    During the past few decades, technologies such as remote sensing, geographical information systems, and global positioning systems have transformed the way the distribution of human population is studied and modeled in space and time. However, the mapping of populations remains constrained by the logistics of censuses and surveys. Consequently, spatially detailed changes across scales of days, weeks, or months, or even year to year, are difficult to assess and limit the application of human population maps in situations in which timely information is required, such as disasters, conflicts, or epidemics. Mobile phones (MPs) now have an extremely high penetration rate across the globe, and analyzing the spatiotemporal distribution of MP calls geolocated to the tower level may overcome many limitations of census-based approaches, provided that the use of MP data is properly assessed and calibrated. Using datasets of more than 1 billion MP call records from Portugal and France, we show how spatially and temporarily explicit estimations of population densities can be produced at national scales, and how these estimates compare with outputs produced using alternative human population mapping methods. We also demonstrate how maps of human population changes can be produced over multiple timescales while preserving the anonymity of MP users. With similar data being collected every day by MP network providers across the world, the prospect of being able to map contemporary and changing human population distributions over relatively short intervals exists, paving the way for new applications and a near real-time understanding of patterns and processes in human geography. PMID:25349388

  19. Using mobile phones in healthcare management for the elderly.

    PubMed

    Kim, Hun-Sung; Lee, Kye-Hwa; Kim, Hyunah; Kim, Ju Han

    2014-12-01

    The increasing average life expectancy is simultaneously increasing the incidence of chronic diseases and the number of healthy elderly people, consequently leading to an increased demand for healthcare management methods that do not involve hospital visits. The development of health management services involving mobile phones will change the focus of medical services from hospital visits and treatments to managing the health decisions made by individuals in their daily lives. However, the elderly may experience specific difficulties in adapting to constantly evolving services. This study reviews various health-related devices such as mobile phones that are available for providing healthcare to the elderly, and the different ways of using them. As the use of mobile phone increases, it is expected that elderly mobile phone users will also be able to regularly check their health status at any time and place. The issues of an ageing population pertain to the entire society rather than only to the elderly, which make mobile-phone-based medical informatics as a health management service a worthy goal.

  20. Surface Plasmon Resonance Biosensor Based on Smart Phone Platforms

    NASA Astrophysics Data System (ADS)

    Liu, Yun; Liu, Qiang; Chen, Shimeng; Cheng, Fang; Wang, Hanqi; Peng, Wei

    2015-08-01

    We demonstrate a fiber optic surface plasmon resonance (SPR) biosensor based on smart phone platforms. The light-weight optical components and sensing element are connected by optical fibers on a phone case. This SPR adaptor can be conveniently installed or removed from smart phones. The measurement, control and reference channels are illuminated by the light entering the lead-in fibers from the phone’s LED flash, while the light from the end faces of the lead-out fibers is detected by the phone’s camera. The SPR-sensing element is fabricated by a light-guiding silica capillary that is stripped off its cladding and coated with 50-nm gold film. Utilizing a smart application to extract the light intensity information from the camera images, the light intensities of each channel are recorded every 0.5 s with refractive index (RI) changes. The performance of the smart phone-based SPR platform for accurate and repeatable measurements was evaluated by detecting different concentrations of antibody binding to a functionalized sensing element, and the experiment results were validated through contrast experiments with a commercial SPR instrument. This cost-effective and portable SPR biosensor based on smart phones has many applications, such as medicine, health and environmental monitoring.

  1. The microbial colonisation of mobile phone used by healthcare staffs.

    PubMed

    Kilic, I H; Ozaslan, M; Karagoz, I D; Zer, Y; Davutoglu, V

    2009-06-01

    Mobile phones are dispensable accessories in social life and normally they are not cleaned properly. Therefore, they serve as a reservoir of bacteria and may cause nosocomial infections in hospitals. The purpose of this study was to investigate microbiological colonization of mobile phones used by healthcare staffs. The study was carried out collecting swab samples with Cary-Blair transport medium from mobile phones of attending healthcare staffs from different departments of three hospitals in March, 2008. All collected samples were inoculated in 5% sheep blood agar, eosin-methylene blue agar and Sabouraud Dextrose agar. Isolated bacteria were identified using by classic technique and Vitec2 (Biomerieux, France) full automated bacteria identification system. Growth was observed in 65 of collected 106 samples, corresponding to 61.3%. The most frequent bacteria were Staphylococcus epidermidis followed by Staphylococcus aureus, Bacillus sp., Corynebacterium sp. and Escherichia coli, respectively. In conclusion, bacteria were colonized on mobile phones frequently and mobile phones may become reservoir of microorganism for nosocomial infections.

  2. Surface Plasmon Resonance Biosensor Based on Smart Phone Platforms

    PubMed Central

    Liu, Yun; Liu, Qiang; Chen, Shimeng; Cheng, Fang; Wang, Hanqi; Peng, Wei

    2015-01-01

    We demonstrate a fiber optic surface plasmon resonance (SPR) biosensor based on smart phone platforms. The light-weight optical components and sensing element are connected by optical fibers on a phone case. This SPR adaptor can be conveniently installed or removed from smart phones. The measurement, control and reference channels are illuminated by the light entering the lead-in fibers from the phone’s LED flash, while the light from the end faces of the lead-out fibers is detected by the phone’s camera. The SPR-sensing element is fabricated by a light-guiding silica capillary that is stripped off its cladding and coated with 50-nm gold film. Utilizing a smart application to extract the light intensity information from the camera images, the light intensities of each channel are recorded every 0.5 s with refractive index (RI) changes. The performance of the smart phone-based SPR platform for accurate and repeatable measurements was evaluated by detecting different concentrations of antibody binding to a functionalized sensing element, and the experiment results were validated through contrast experiments with a commercial SPR instrument. This cost-effective and portable SPR biosensor based on smart phones has many applications, such as medicine, health and environmental monitoring. PMID:26255778

  3. Cell phones and children: follow the precautionary road.

    PubMed

    Rosenberg, Suzanne

    2013-01-01

    Children are increasingly using cell phones. "Family package" deals make it easy for parents to obtain phones for their children, and the phones provide parents with the comfort of easy access to their children. However, cell phones emit radio frequency (RF) radiation (Bucher & the Committee on Appropriations, 2010). While the government has deemed RF radiation to be safe, there is no current significant research to make this claim. To determine the relationship between cell phone radiation and brain cancer requires long-term studies lasting decades and with inclusion of frequent users in the subject pool. Further, to extend the results of any study to children requires controlling for the differences between juveniles and adults regarding the composition of the head, and bone density and neural tissue. Dr. L. Hardell of the University Hospital of Sweden noted that "it is necessary to apply the precautionary principle in this situation," especially for long-term exposure that is likely to affect children (Hardell as cited in Mead, 2008, p. 1). There is cause for concern.

  4. Phoning while driving II: a review of driving conditions influence.

    PubMed

    Collet, C; Guillot, A; Petit, C

    2010-05-01

    The first paper examined how the variables related to driving performance were impacted by the management of holding a phone conversation. However, the conditions under which this dual task is carried out are dependent upon a set of factors that may particularly influence the risk of crash. These conditions are defined by several independent variables, classified into five main categories: i) legislation; ii) phone type (hands-free or hand-held); iii) drivers' features regarding age, gender, personal individual profile and driving experience; iv) conversation content (casual or professional) and its context (held with passengers or with a cell (mobile) phone); v) driving conditions (actual or simulated driving, road type, traffic density and weather). These independent variables determine the general conditions. The way in which these factors are combined and interact one with another thus determines the risk that drivers undergo when a cell phone is used while driving. Finally, this review defined the general conditions of driving for which managing a phone conversation is likely to elicit a high risk of car crash or, conversely, may provide a situation of lower risk, with sufficient acceptance to ensure safety.

  5. Cell phones and tumor: still in no man's land.

    PubMed

    Kohli, D R; Sachdev, A; Vats, H S

    2009-01-01

    The use of cell phones is increasing worldwide at a phenomenal pace. While cellular communication has dramatically influenced our lifestyle, its impact on human health has not been completely assessed. Widespread concern continues in the community about the deleterious effects of radiofrequency radiations (with which cell phones operate) on human tissues and the subsequent potential for carcinogenesis. A detailed survey of published studies researching this question was done in preparation of this manuscript. Included in the survey were case reports, in vitro studies, population based retrospective studies and other investigations. The database of indexed journals was searched for key words like 'cell phone', 'radiation', 'cancer' and 'radio waves'. Guidelines issued by the World Health Organization, federal and technical authorities, Institute of Electrical and Electronic Engineers and the International Commission for Non-Ionizing Radiation Protection were reviewed. The evaluation of current evidence provided by various studies to suggest the possible carcinogenic potential of radiofrequency radiation is inconclusive. This risk assumes significance in light of the burgeoning number of people who are continually exposed to the high frequency radiation from cell phones and towers that serve as receiving and transmitting stations. The aim of this review is to identify limitations in past studies, present available data for consideration, and identify gaps in the current knowledge base. This will provide impetus and direction for further research and allow informed decisions pertaining to cell phone use to be made.

  6. Health information: what can mobile phone assessments add?

    PubMed

    Stomberg, Margareta Warrén; Platon, Birgitta; Widén, Annette; Wallner, Ingegerd; Karlsson, Ove

    2012-01-01

    In healthcare, pain assessment is a key factor in effectively treating postoperative pain and reducing the risk of developing chronic pain. The overall aim of this study was to investigate whether a mobile phone support system can be used as a basis to continuously document patients' health information in real time and provide conditions for optimal, individual pain management after cholecystectomy and hysterectomy procedures.In this pilot study, two randomly selected groups of patients provided information about their pain for one week postoperatively. One group responded via cell phones, and the other, a control group, responded using paper-based questionnaires.The mobile phone system was found to provide a fast and safe basis for reporting pain postoperatively in real time. The results indicate that on days 3 and 4 the mobile phone group reported significantly higher levels of pain than the control group, and the cholecystectomy patients reported significantly more pain at movement on days 3 and 4 than the hysterectomy patients.The mobile phone approach is an adaptation to modern technology and the mobility of individuals. This technology is user friendly and requires minimal support. However, as the sample size was small (n = 37), further studies are needed before additional conclusions can be drawn.

  7. Correlation between cellular phone use and epithelial parotid gland malignancies.

    PubMed

    Duan, Y; Zhang, H Z; Bu, R F

    2011-09-01

    The authors investigated the association between cellular phone use and epithelial parotid gland malignancy. The subjects were 136 cases who were treated for this condition at the authors' hospital from January 1993 to March 2010, and 2051 controls who did not have salivary gland tumours and were admitted to the oral and maxillofacial surgery department during the same period. Logistic analysis was used to examine the relationship between cellular phone use and risk of epithelial parotid gland malignancy and mucoepidermoid carcinoma. Overall, the frequency of cellular phone use was not significantly associated with epithelial parotid gland malignancy. Female gender, advanced age, married status, high income, and smoking were associated with an elevated risk of epithelial parotid gland malignancy, especially mucoepidermoid carcinoma. Residence in a rural area was associated with reduced risk of epithelial parotid gland malignancy. The results suggest a possible dose-response relationship of cellular phone use with epithelial parotid gland malignancy. The authors suggest that the association of cellular phone use and epithelial parotid gland malignancy and mucoepidermoid carcinoma requires further investigation with large prospective studies.

  8. Youth mental health interventions via mobile phones: a scoping review.

    PubMed

    Seko, Yukari; Kidd, Sean; Wiljer, David; McKenzie, Kwame

    2014-09-01

    Mobile phone technologies have been hailed as a promising means for delivering mental health interventions to youth and adolescents, the age group with high cell phone penetration and with the onset of 75% of all lifetime mental disorders. Despite the growing evidence in physical health and adult mental health, however, little information is available about how mobile phones are implemented to deliver mental health services to the younger population. The purpose of this scoping study was to map the current state of knowledge regarding mobile mental health (mMental Health) for young people (age 13-24 years), identify gaps, and consider implications for future research. Seventeen articles that met the inclusion criteria provided evidence for mobile phones as a way to engage youth in therapeutic activities. The flexibility, interactivity, and spontaneous nature of mobile communications were also considered advantageous in encouraging persistent and continual access to care outside clinical settings. Four gaps in current knowledge were identified: the scarcity of studies conducted in low and middle income countries, the absence of information about the real-life feasibility of mobile tools, the need to address the issue of technical and health literacy of both young users and health professionals, and the need for critical discussion regarding diverse ethical issues associated with mobile phone use. We suggest that mMental Health researchers and clinicians should carefully consider the ethical issues related to patient-practitioner relationship, best practices, and the logic of self-surveillance.

  9. On the use of new generation mobile phone (smart phone) for retrospective accident dosimetry

    NASA Astrophysics Data System (ADS)

    Lee, J. I.; Chang, I.; Pradhan, A. S.; Kim, J. L.; Kim, B. H.; Chung, K. S.

    2015-11-01

    Optically stimulated luminescence (OSL) characteristics of resistors, inductors and integrated-circuit (IC) chips, extracted from new generation smart phones, were investigated for the purpose of retrospective accident dosimetry. Inductor samples were found to exhibit OSL sensitivity about 5 times and 40 times higher than that of the resistors and the IC chips, respectively. On post-irradiation storage, the resistors exhibited a much higher OSL fading (about 80 % in 36 h as compared to the value 3 min after irradiation) than IC chips (about 20 % after 36 h) and inductors (about 50 % in 36 h). Higher OSL sensitivity, linear dose response (from 8.7 mGy up to 8.9 Gy) and acceptable fading make inductors more attractive for accident dosimetry than widely studied resistors.

  10. Adolescent Mobile Phone Use and Mobile Phone-Based Health Promotion.

    PubMed

    Harpin, Scott; Ezeanochie, Nnamdi; Bull, Sheana

    2014-12-01

    The past 20 years of mobile technology has shifted the ways in which young people communicate and network with one another. Mobile phone use is prevalent among adolescents and therefore is an ideal form of communication for tailored health care. This is especially so given the dramatic uptake in use of mobile technologies in this age group. Technology developments have also altered how physicians and public health interventionists communicate with adolescents for prevention messages. Rapidly changing technology has made the study of how best to communicate with youth a challenge because research can scarcely keep up with advances in the technology. However, best practices from behavior change and communication theories remain a foundation for future intervention directions and how we might best meet the health promotion needs of adolescents.

  11. Mobile Phones: Potential Sources of Nickel and Cobalt Exposure for Metal Allergic Patients.

    PubMed

    Aquino, Marcella; Mucci, Tania; Chong, Melanie; Lorton, Mark Davis; Fonacier, Luz

    2013-12-01

    The use of cellular phones has risen exponentially with over 300 million subscribers. Nickel has been detected in cell phones and reports of contact dermatitis attributable to metals are present in the literature. We determined nickel and cobalt content in popular cell phones in the United States. Adults (>18 years) who owned a flip phone, Blackberry(®), or iPhone(®) were eligible. Seventy-two cell phones were tested using SmartPractice's(®) commercially available nickel and cobalt spot tests. Test areas included buttons, keypad, speakers, camera, and metal panels. Of the 72 cell phones tested, no iPhones or Droids(®) tested positive for nickel or cobalt. About 29.4% of Blackberrys [95% confidence interval (CI), 13%-53%] tested positive for nickel; none were positive for cobalt. About 90.5% of flip phones (95% CI, 70%-99%) tested positive for nickel and 52.4% of flip phones (95% CI, 32%-72%) tested positive for cobalt. Our study indicates that nickel and cobalt are present in popular cell phones. Patients with known nickel or cobalt allergy may consider their cellular phones as a potential source of exposure. Further studies are needed to examine whether there is a direct association with metal content in cell phones and the manifestation of metal allergy.

  12. Cell-phone use and self-reported hypertension: national health interview survey 2008.

    PubMed

    Suresh, Sivaranjani; Sabanayagam, Charumathi; Kalidindi, Sita; Shankar, Anoop

    2011-01-01

    Background. Cell-phone usage has increased dramatically over the last decade, along with a rising public concern over the health effects of using this device. The association between cell-phone usage and hypertension has not been examined before. Methods. We analysed data from 21,135 adults aged ≥18 years who participated in the 2008 National Health Interview Survey. Based on reported cell-phone use, participants were categorized as cell-phone nonusers, predominantly landline users, dual users of cell phone and landline, and predominantly cell-phone users. The main outcome of interest was self-reported physician-diagnosed hypertension (n = 6,793). Results. 43.5% of the participants were cell-phone nonusers, while 13.8% were predominantly cell-phone users. We found that cell-phone use was inversely associated with hypertension, independent of age, sex, race/ethnicity, smoking, alcohol consumption, education, body mass index (BMI), and physical activity. Compared to cell-phone nonusers, the multivariable odds ratio (95% confidence interval) of hypertension was 0.86 (0.75-0.98, P trend  =  .005) among predominantly cell-phone users. This inverse association between cell-phone use and hypertension was stronger in women, those aged <60 years, whites, and those with BMI <25 kg/m(2). Conclusion. We found that cell-phone usage was protectively associated with self-reported hypertension in a nationally representative sample of US adults.

  13. Investigation of kinetic friction using an iPhone

    NASA Astrophysics Data System (ADS)

    Baldock, Clive; Johnson, Roger

    2016-11-01

    The iPhone is particularly suitable for mechanics experiments using the in-built acceleration sensor or accelerometer in-conjunction with the on-board data collection facility and a downloadable so-called ‘app’. In this work the iPhone has been used to investigate the acceleration due to gravity and determine the coefficient of kinetic friction, μ k of the iPhone as an object sliding down an inclined plane. This method is more accurate than that usually employed in the laboratory where the ‘fits and starts’ of the block sliding down the inclined plane potentially invalidate the required assumption that the velocity is constant. In its simplest form the measurement of acceleration is required to be undertaken for only 2 angles.

  14. How to encourage children to use mobile phones safely.

    PubMed

    Moyse, Karen

    2011-12-01

    The safe use of mobile phones is part of the health promotion duty of children's nurses and those nurses working in schools. In this article the author advocates that children and young people should be encouraged to keep and use their mobiles in a safe place, avoid lengthy and incessant calls, provide their number only to those they feel they can trust and switch off the phone as soon as possible. They need to take care with the type of messages they send and to tell someone they can trust about any cyberbullying. The nurse can also help with school policies and can attend groups in schools and youth organisations to discuss the positive and negative aspects of mobile phone technology.

  15. A new mobile phone-based ECG monitoring system.

    PubMed

    Iwamoto, Junichi; Yonezawa, Yoshiharu; Ogawa, Hiromichi Maki Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W Morton

    2007-01-01

    We have developed a system for monitoring a patient's electrocardiogram (ECG) and movement during daily activities. The complete system is mounted on chest electrodes and continuously samples the ECG and three axis accelerations. When the patient feels a heart discomfort, he or she pushes the data transmission switch on the recording system and the system sends the recorded ECG waveforms and three axis accelerations of the two prior minutes, and for two minutes after the switch is pressed. The data goes directly to a hospital server computer via a 2.4 GHz low power mobile phone. These data are stored on a server computer and downloaded to the physician's Java mobile phone. The physician can display the data on the phone's liquid crystal display.

  16. Inferring friendship network structure by using mobile phone data.

    PubMed

    Eagle, Nathan; Pentland, Alex Sandy; Lazer, David

    2009-09-08

    Data collected from mobile phones have the potential to provide insight into the relational dynamics of individuals. This paper compares observational data from mobile phones with standard self-report survey data. We find that the information from these two data sources is overlapping but distinct. For example, self-reports of physical proximity deviate from mobile phone records depending on the recency and salience of the interactions. We also demonstrate that it is possible to accurately infer 95% of friendships based on the observational data alone, where friend dyads demonstrate distinctive temporal and spatial patterns in their physical proximity and calling patterns. These behavioral patterns, in turn, allow the prediction of individual-level outcomes such as job satisfaction.

  17. Detecting and Locating Crosswalks using a Camera Phone.

    PubMed

    Ivanchenko, Volodymyr; Coughlan, James; Shen, Huiying

    2008-01-01

    Urban intersections are the most dangerous parts of a blind or visually impaired person's travel. To address this problem, this paper describes the novel "Crosswatch" system, which uses computer vision to provide information about the location and orientation of crosswalks to a blind or visually impaired pedestrian holding a camera cell phone. A prototype of the system runs on an off-the-shelf Nokia N95 camera phone in real time, which automatically takes a few images per second, analyzes each image in a fraction of a second and sounds an audio tone when it detects a crosswalk. Real-time performance on the cell phone, whose computational resources are limited compared to the type of desktop platform usually used in computer vision, is made possible by coding in Symbian C++. Tests with blind subjects demonstrate the feasibility of the system.

  18. Infectious diseases resources for the iPhone.

    PubMed

    Oehler, Richard L; Smith, Kevin; Toney, John F

    2010-05-01

    Modern technology has revolutionized the clinician's ability to have vast information resources available literally at one's fingertips. The advent of the smartphone--an integration of the mobile phone with an ultraportable computer, web browser, multimedia player, and camera, has given clinicians the capability to merge their information and communication resources into one compact handheld instrument. Apple's iPhone, and its sister device, the iPod touch, with a combined customer base of more than 50 million users and more than 100,000 downloadable applications, are now the leading handheld platforms for medical personnel to access personal information, medical reference, clinical data, and medically oriented "apps" on the go. The purpose of this article is to provide an overview of some of the diverse infectious diseases-oriented resources available to the iPhone/iPod touch user.

  19. Compulsive Cell Phone Use and History of Motor Vehicle Crash

    PubMed Central

    O’Connor, Stephen S.; Whitehill, Jennifer M.; King, Kevin M.; Kernic, Mary A.; Boyle, Linda Ng; Bresnahan, Brian; Mack, Christopher D.; Ebel, Beth E.

    2013-01-01

    Introduction Few studies have examined the psychological factors underlying the association between cell phone use and motor vehicle crash. We sought to examine the factor structure and convergent validity of a measure of problematic cell phone use and explore whether compulsive cell phone use is associated with a history of motor vehicle crash. Methods We recruited a sample of 383 undergraduate college students to complete an on-line assessment that included cell phone use and driving history. We explored the dimensionality of the Cell Phone Overuse Scale (CPOS) using factor analytic methods. Ordinary least squares regression models were used to examine associations between identified subscales and measures of impulsivity, alcohol use, and anxious relationship style to establish convergent validity. We used negative binomial regression models to investigate associations between the CPOS and motor vehicle crash incidence. Results We found the CPOS to be comprised of four subscales: anticipation, activity interfering, emotional reaction, and problem recognition. Each displayed significant associations with aspects of impulsivity, problematic alcohol use, and anxious relationship style characteristics. Only the anticipation subscale demonstrated statistically significant associations with reported motor vehicle crash incidence, controlling for clinical and demographic characteristics (RR 1.13, CI 1.01 to 1.26). For each one-point increase on the 6-point anticipation subscale, risk for previous motor vehicle crash increased by 13%. Conclusions Crash risk is strongly associated with heightened anticipation about incoming phone calls or messages. The mean score on the CPOS is associated with increased risk of motor vehicle crash but does not reach statistical significance. PMID:23910571

  20. The influence of direct mobile phone radiation on sperm quality

    PubMed Central

    Gorpinchenko, Igor; Nikitin, Oleg; Shulyak, Alexander

    2014-01-01

    Introduction It is impossible to imagine a modern socially–active man who does not use mobile devices and/or computers with Wi–Fi function. The effect of mobile phone radiation on male fertility is the subject of recent interest and investigations. The aim of this study was to investigate the direct in vitro influence of mobile phone radiation on sperm DNA fragmentation and motility parameters in healthy subjects with normozoospermia. Material and methods 32 healthy men with normal semen parameters were selected for the study. Each sperm sample was divided into two equal portions (A and B). Portions A of all involved men were placed for 5 hours in a thermostat, and portions B were placed into a second thermostat for the same period of time, where a mobile phone in standby/talk mode was placed. After 5 hours of incubation the sperm samples from both thermostats were re–evaluated regarding basic motility parameters. The presence of DNA fragmentation in both A and B portions of each sample was determined each hour using a standard sperm chromatin dispersion test. Results The number of spermatozoa with progressive movement in the group, influenced by electromagnetic radiation, is statistically lower than the number of spermatozoa with progressive movement in the group under no effect of the mobile phone. The number of non–progressive movement spermatozoa was significantly higher in the group, which was influenced by cell phone radiation. The DNA fragmentation was also significantly higher in this group. Conclusions A correlation exists between mobile phone radiation exposure, DNA–fragmentation level and decreased sperm motility. PMID:24982785

  1. Optofluidic fluorescent imaging cytometry on a cell phone.

    PubMed

    Zhu, Hongying; Mavandadi, Sam; Coskun, Ahmet F; Yaglidere, Oguzhan; Ozcan, Aydogan

    2011-09-01

    Fluorescent microscopy and flow cytometry are widely used tools in biomedical sciences. Cost-effective translation of these technologies to remote and resource-limited environments could create new opportunities especially for telemedicine applications. Toward this direction, here we demonstrate the integration of imaging cytometry and fluorescent microscopy on a cell phone using a compact, lightweight, and cost-effective optofluidic attachment. In this cell-phone-based optofluidic imaging cytometry platform, fluorescently labeled particles or cells of interest are continuously delivered to our imaging volume through a disposable microfluidic channel that is positioned above the existing camera unit of the cell phone. The same microfluidic device also acts as a multilayered optofluidic waveguide and efficiently guides our excitation light, which is butt-coupled from the side facets of our microfluidic channel using inexpensive light-emitting diodes. Since the excitation of the sample volume occurs through guided waves that propagate perpendicular to the detection path, our cell-phone camera can record fluorescent movies of the specimens as they are flowing through the microchannel. The digital frames of these fluorescent movies are then rapidly processed to quantify the count and the density of the labeled particles/cells within the target solution of interest. We tested the performance of our cell-phone-based imaging cytometer by measuring the density of white blood cells in human blood samples, which provided a decent match to a commercially available hematology analyzer. We further characterized the imaging quality of the same platform to demonstrate a spatial resolution of ~2 μm. This cell-phone-enabled optofluidic imaging flow cytometer could especially be useful for rapid and sensitive imaging of bodily fluids for conducting various cell counts (e.g., toward monitoring of HIV+ patients) or rare cell analysis as well as for screening of water quality in

  2. Cell phone radiation exposure on brain and associated biological systems.

    PubMed

    Kesari, Kavindra Kumar; Siddiqui, Mohd Haris; Meena, Ramovatar; Verma, H N; Kumar, Shivendra

    2013-03-01

    Wireless technologies are ubiquitous today and the mobile phones are one of the prodigious output of this technology. Although the familiarization and dependency of mobile phones is growing at an alarming pace, the biological effects due to the exposure of radiations have become a subject of intense debate. The present evidence on mobile phone radiation exposure is based on scientific research and public policy initiative to give an overview of what is known of biological effects that occur at radiofrequency (RF)/ electromagnetic fields (EMFs) exposure. The conflict in conclusions is mainly because of difficulty in controlling the affecting parameters. Biological effects are dependent not only on the distance and size of the object (with respect to the object) but also on the environmental parameters. Health endpoints reported to be associated with RF include childhood leukemia, brain tumors, genotoxic effects, neurological effects and neurodegenerative diseases, immune system deregulation, allergic and inflammatory responses, infertility and some cardiovascular effects. Most of the reports conclude a reasonable suspicion of mobile phone risk that exists based on clear evidence of bio-effects which with prolonged exposures may reasonably be presumed to result in health impacts. The present study summarizes the public issue based on mobile phone radiation exposure and their biological effects. This review concludes that the regular and long term use of microwave devices (mobile phone, microwave oven) at domestic level can have negative impact upon biological system especially on brain. It also suggests that increased reactive oxygen species (ROS) play an important role by enhancing the effect of microwave radiations which may cause neurodegenerative diseases.

  3. Examination of mobile phones in a university forensic lab environment

    NASA Astrophysics Data System (ADS)

    Luttenberger, Silas; Kröger, Knut; Creutzburg, Reiner

    2011-06-01

    The aim of this article is to show forensic investigation methods for mobile phones to students in a university forensic lab environment. Students have to learn the usefulness of forensic procedures to ensure evidence collection, evidence preservation, forensic analysis, and reporting. Open source tools as well as commercial forensic tools for forensic investigation of modern mobile (smart) phones are used. It is demonstrated how important data stored in the mobile device are investigated. Different scenarios of investigations are presented that are well-suited for forensics lab work in university.

  4. Symptoms Experienced by Long Term Users of Mobil Phones

    NASA Astrophysics Data System (ADS)

    Kucer, Nermin

    2007-04-01

    In this study was investigated the possible effects of long term usage of mobile phone. The studied symptoms are headache, dizziness, extreme irritation, forgetfulness, neuropsychological discomfort, decrease of the reflex, clicking sound in the ears, and increase in carelessness. This survey study, using questionnaire, was conducted among randomly selected 146 university students in Kocaeli, Turkey. There is no effect on neuropsychological discomfort, increase in carelessness, headache, and clicking sound in the ears, but some statistical evidences are found that mobile phone may cause extreme irritation, decrease of the reflex, dizziness, and forgetfulness.

  5. Toward Dietary Assessment via Mobile Phone Video Cameras

    PubMed Central

    Chen, Nicholas; Lee, Yun Young; Rabb, Maurice; Schatz, Bruce

    2010-01-01

    Reliable dietary assessment is a challenging yet essential task for determining general health. Existing efforts are manual, require considerable effort, and are prone to underestimation and misrepresentation of food intake. We propose leveraging mobile phones to make this process faster, easier and automatic. Using mobile phones with built-in video cameras, individuals capture short videos of their meals; our software then automatically analyzes the videos to recognize dishes and estimate calories. Preliminary experiments on 20 typical dishes from a local cafeteria show promising results. Our approach complements existing dietary assessment methods to help individuals better manage their diet to prevent obesity and other diet-related diseases. PMID:21346950

  6. The Westinghouse Series 1000 Mobile Phone: Technology and applications

    NASA Technical Reports Server (NTRS)

    Connelly, Brian

    1993-01-01

    Mobile satellite communications will be popularized by the North American Mobile Satellite (MSAT) system. The success of the overall system is dependent upon the quality of the mobile units. Westinghouse is designing our unit, the Series 1000 Mobile Phone, with the user in mind. The architecture and technology aim at providing optimum performance at a low per unit cost. The features and functions of the Series 1000 Mobile Phone have been defined by potential MSAT users. The latter portion of this paper deals with who those users may be.

  7. Miniaturized NIR scanning grating spectrometer for use in mobile phones

    NASA Astrophysics Data System (ADS)

    Knobbe, Jens; Pügner, Tino; Grüger, Heinrich

    2016-05-01

    An extremely miniaturized scanning grating spectrometer at the size of a sugar cube has been developed at Fraunhofer IPMS. To meet the requirements for the integration into a mobile phone a new system approach has been pursued. The key component within the system is a silicon-based deflectable diffraction grating with an integrated driving mechanism. A first sample of the new spectrometer was built and characterized. It was found to have a spectral range from 950 nm to 1900 nm at a resolution of 10 nm. The results show that the performance of the new MEMS spectrometer is in good agreement with the requirements for mobile phone integration.

  8. Innovation in practice: mobile phone technology in patient care.

    PubMed

    Blake, Holly

    2008-04-01

    Mobile phones are becoming increasingly important in everyday life and now in healthcare. There has been a steady growth of information and communication technologies in health communication and technology is used progressively in telemedicine, wireless monitoring of health outcomes in disease and in the delivery of health interventions. Mobile phones are becoming an important method of encouraging better nurse-patient communication and will undoubtedly increase in application over coming years. This article presents recent developments and applications of mobile technology for health promotion and patient-monitoring in chronic disease.

  9. [Cyberbullying: adolescent victimization through mobile phone and internet].

    PubMed

    Buelga, Sofía; Cava, María Jesús; Musitu, Gonzalo

    2010-11-01

    The aim of this study was to analyse the prevalence of victimization through mobile phone and internet. The differences of gender and academic year in the type of electronic aggression were also examined. The sample comprised 2001 adolescents of both genders and ages between 11 and 17 years. Results indicated that 24.6% of the adolescents had been bullied by mobile phone during the last year, and 29% through internet. In most of the electronic aggressions, girls were more bullied than boys. It was also observed that students attending the first two years of secondary education tended to be more victimized.

  10. Wireless Phone Threat Assessment for Aircraft Communication and Navigation Radios

    NASA Technical Reports Server (NTRS)

    Nguyens, T. X.; Koppen, S. V.; Smith, L. J.; Williams, R. A.; Salud, M. T.

    2005-01-01

    Emissions in aircraft communication and navigation bands are measured for the latest generation of wireless phones. The two wireless technologies considered, GSM/GPRS and CDMA2000, are the latest available to general consumers in the U.S. A base-station simulator is used to control the phones. The measurements are conducted using reverberation chambers, and the results are compared against FCC and aircraft installed equipment emission limits. The results are also compared against baseline emissions from laptop computers and personal digital assistant devices that are currently allowed to operate on aircraft.

  11. NOTE: Cell-phone interference with pocket dosimeters

    NASA Astrophysics Data System (ADS)

    Djajaputra, David; Nehru, Ramasamy; Bruch, Philip M.; Ayyangar, Komanduri M.; Raman, Natarajan V.; Enke, Charles A.

    2005-05-01

    Accurate reporting of personal dose is required by regulation for hospital personnel that work with radioactive material. Pocket dosimeters are commonly used for monitoring this personal dose. We show that operating a cell phone in the vicinity of a pocket dosimeter can introduce large and erroneous readings of the dosimeter. This note reports a systematic study of this electromagnetic interference. We found that simple practical measures are enough to mitigate this problem, such as increasing the distance between the cell phone and the dosimeter or shielding the dosimeter, while maintaining its sensitivity to ionizing radiation, by placing it inside a common anti-static bag.

  12. Distributed Combinatorial Optimization Using Privacy on Mobile Phones

    NASA Astrophysics Data System (ADS)

    Ono, Satoshi; Katayama, Kimihiro; Nakayama, Shigeru

    This paper proposes a method for distributed combinatorial optimization which uses mobile phones as computers. In the proposed method, an ordinary computer generates solution candidates and mobile phones evaluates them by referring privacy — private information and preferences. Users therefore does not have to send their privacy to any other computers and does not have to refrain from inputting their preferences. They therefore can obtain satisfactory solution. Experimental results have showed the proposed method solved room assignment problems without sending users' privacy to a server.

  13. MedlinePlus® Everywhere: Access from Your Phone, Tablet or Desktop

    MedlinePlus

    ... gov/responsivefull.html MedlinePlus® Everywhere: Access from Your Phone, Tablet or Desktop To use the sharing features ... consistent user experience from a desktop, tablet, or phone. All users, regardless of how they access MedlinePlus, ...

  14. 77 FR 1889 - Drivers of CMVs: Restricting the Use of Cellular Phones; Technical Amendment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-12

    ... Use of Cellular Phones; Technical Amendment AGENCY: Federal Motor Carrier Safety Administration (FMCSA... the Use of Cellular Phones final rule (76 FR 75470) had a clerical error in Sec. 391.15(f)(1)...

  15. Over-connected? A qualitative exploration of the relationship between Australian youth and their mobile phones.

    PubMed

    Walsh, Shari P; White, Katherine M; Young, Ross M

    2008-02-01

    In Australia, youth are the most prolific users of mobile phones, however, there is little research investigating this phenomenon. This paper reports a qualitative exploration of psychological factors relating to mobile phone use amongst Australian youth. 32 participants, aged between 16 and 24 years, took part in focus group discussions. Thematic data analysis focussed on identifying the psychological benefits arising from mobile phone use and whether mobile phone addiction was occurring amongst this group. Mobile phone use was believed to provide numerous benefits to users and is an intrinsic part of most young people's lives. It emerged that some young people are extremely attached to their mobile phone with symptoms of behavioural addiction revealed in participants' descriptions of their mobile phone use. The study provides a solid foundation for further work investigating addictive patterns of mobile phone use amongst youth.

  16. No Evidence Linking Cell Phone Use to Risk of Brain Tumors

    MedlinePlus

    ... 17, 2010 back to top - - For More Information International Agency for Research on Cancer Press Release National Cancer Institute Statement on Cell Phone Study Health Issues Current Research Results Children and Cell Phones The Line ...

  17. 78 FR 34132 - Certain Portable Electronic Communications Devices, Including Mobile Phones and Components...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-06

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION Certain Portable Electronic Communications Devices, Including Mobile Phones and Components Thereof... Communications Devices, Including Mobile Phones and Components Thereof, DN 2958; the Commission...

  18. 76 FR 24051 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-29

    ... importation of certain electronic devices, including mobile phones, mobile tablets, portable music players... COMMISSION In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable Music Players, and Computers, and Components Thereof; Notice of Institution of Investigation AGENCY:...

  19. Is human saliva an indicator of the adverse health effects of using mobile phones?

    PubMed

    Hamzany, Yaniv; Feinmesser, Raphael; Shpitzer, Thomas; Mizrachi, Aviram; Hilly, Ohad; Hod, Roy; Bahar, Gideon; Otradnov, Irina; Gavish, Moshe; Nagler, Rafael M

    2013-02-20

    Increasing use of mobile phones creates growing concerns regarding harmful effects of radiofrequency nonionizing electromagnetic radiation on human tissues located close to the ear, where phones are commonly held for long periods of time. We studied 20 subjects in the mobile-phone group who had a mean duration of mobile phone use of 12.5 years (range 8-15) and a mean time use of 29.6 h per month (range 8-100). Deaf individuals served as controls. We compared salivary outcomes (secretion, oxidative damage indices, flow rate, and composition) between mobile phone users and nonusers. We report a significant increase in all salivary oxidative stress indices studied in mobile phone users. Salivary flow, total protein, albumin, and amylase activity were decreased in mobile phone users. These observations lead to the hypothesis that the use of mobile phones may cause oxidative stress and modify salivary function.

  20. 3D whiteboard: collaborative sketching with 3D-tracked smart phones

    NASA Astrophysics Data System (ADS)

    Lue, James; Schulze, Jürgen P.

    2014-02-01

    We present the results of our investigation of the feasibility of a new approach for collaborative drawing in 3D, based on Android smart phones. Our approach utilizes a number of fiduciary markers, placed in the working area where they can be seen by the smart phones' cameras, in order to estimate the pose of each phone in the room. Our prototype allows two users to draw 3D objects with their smart phones by moving their phones around in 3D space. For example, 3D lines are drawn by recording the path of the phone as it is moved around in 3D space, drawing line segments on the screen along the way. Each user can see the virtual drawing space on their smart phones' displays, as if the display was a window into this space. Besides lines, our prototype application also supports 3D geometry creation, geometry transformation operations, and it shows the location of the other user's phone.

  1. Using technology to promote mobile learning: engaging students with cell phones in the classroom.

    PubMed

    Robb, Meigan; Shellenbarger, Teresa

    2012-01-01

    Advancements in cell phone technology have impacted every aspect of society. Individuals have instant access to social networks, Web sites, and applications. Faculty need to consider using these mobile devices to enrich the classroom. The authors discuss how they successfully designed and incorporated cell phone learning activities into their classrooms. Teaching-learning strategies using cell phone technology and recommendations for overcoming challenges associated with cell phone use in the classroom are discussed.

  2. Use of mobile phones and cordless phones is associated with increased risk for glioma and acoustic neuroma.

    PubMed

    Hardell, Lennart; Carlberg, Michael; Hansson Mild, Kjell

    2013-04-01

    The International Agency for Research on Cancer (IARC) at WHO evaluation of the carcinogenic effect of RF-EMF on humans took place during a 24-31 May 2011 meeting at Lyon in France. The Working Group consisted of 30 scientists and categorised the radiofrequency electromagnetic fields from mobile phones, and from other devices that emit similar non-ionising electromagnetic fields (RF-EMF), as Group 2B, i.e., a 'possible', human carcinogen. The decision on mobile phones was based mainly on the Hardell group of studies from Sweden and the IARC Interphone study. We give an overview of current epidemiological evidence for an increased risk for brain tumours including a meta-analysis of the Hardell group and Interphone results for mobile phone use. Results for cordless phones are lacking in Interphone. The meta-analysis gave for glioma in the most exposed part of the brain, the temporal lobe, odds ratio (OR)=1.71, 95% confidence interval (CI)=1.04-2.81 in the ≥10 years (>10 years in the Hardell group) latency group. Ipsilateral mobile phone use ≥1640h in total gave OR=2.29, 95% CI=1.56-3.37. The results for meningioma were OR=1.25, 95% CI=0.31-4.98 and OR=1.35, 95% CI=0.81-2.23, respectively. Regarding acoustic neuroma ipsilateral mobile phone use in the latency group ≥10 years gave OR=1.81, 95% CI=0.73-4.45. For ipsilateral cumulative use ≥1640h OR=2.55, 95% CI=1.50-4.40 was obtained. Also use of cordless phones increased the risk for glioma and acoustic neuroma in the Hardell group studies. Survival of patients with glioma was analysed in the Hardell group studies yielding in the >10 years latency period hazard ratio (HR)=1.2, 95% CI=1.002-1.5 for use of wireless phones. This increased HR was based on results for astrocytoma WHO grade IV (glioblastoma multiforme). Decreased HR was found for low-grade astrocytoma, WHO grades I-II, which might be caused by RF-EMF exposure leading to tumour-associated symptoms and earlier detection and surgery with better

  3. Effects of Classroom Cell Phone Use on Expected and Actual Learning

    ERIC Educational Resources Information Center

    Froese, Arnold D.; Carpenter, Christina N.; Inman, Denyse A.; Schooley, Jessica R.; Barnes, Rebecca B.; Brecht, Paul W.; Chacon, Jasmin D.

    2012-01-01

    Studies of driving indicate that the conversational aspects of using cell phones generate high risks from divided attention. Prior surveys document high rates at which students carry phones to and use them during class. Some experiments have demonstrated that cell phones distract students from learning. The present studies combined survey and…

  4. Updating Policy on Latest Risks for Students with Cell Phones in the School

    ERIC Educational Resources Information Center

    St. Gerard, Vanessa

    2006-01-01

    It is hard to imagine how the majority of people made it through the day without cell phones just 5 to 10 years ago. These days, cell phones are everywhere, and everyone seems to own one--including many middle school students and even some students who are in elementary school. Both parents and students feel these phones are essential in order to…

  5. Bacterial flora on cell phones of health care providers in a teaching institution.

    PubMed

    Sadat-Ali, Mir; Al-Omran, Ammar K; Azam, Quamar; Bukari, Huda; Al-Zahrani, AlHussain J; Al-Turki, Rasha A; Al-Omran, Abdallah S

    2010-06-01

    We conducted a cross-sectional study involving culture of cell phones of 288 health care providers (HCP) during a 6-month period. One hundred nine (43.6%) HCP carried infective organisms on their cell phones. It is recommended that cell phones be cleaned regularly.

  6. The Cyborg Astrobiologist: porting from a wearable computer to the Astrobiology Phone-cam

    NASA Astrophysics Data System (ADS)

    Bartolo, Alexandra; McGuire, Patrick C.; Camilleri, Kenneth P.; Spiteri, Christopher; Borg, Jonathan C.; Farrugia, Philip J.; Ormö, Jens; Gómez-Elvira, Javier; Rodriguez-Manfredi, José Antonio; Díaz-Martínez, Enrique; Ritter, Helge; Haschke, Robert; Oesker, Markus; Ontrup, Jörg

    2007-08-01

    We have used a simple camera phone to significantly improve an `exploration system' for astrobiology and geology. This camera phone will make it much easier to develop and test computer-vision algorithms for future planetary exploration. We envision that the `Astrobiology Phone-cam' exploration system can be fruitfully used in other problem domains as well.

  7. Standing in the Schoolhouse Door: Teacher Perceptions of Mobile Phones in the Classroom

    ERIC Educational Resources Information Center

    Thomas, Kevin M.; O'Bannon, Blanche W.; Britt, Virginia G.

    2014-01-01

    This study examines the perceptions of 1,121 teachers in Kentucky and Tennessee to determine their support for the use of mobile phones in the classroom, as well as their perceptions of the mobile phone features that are beneficial for school-related work and the instructional barriers to mobile phone use. The results indicated that slightly more…

  8. Mobile Phone Use in a Pennsylvania Public High School: Does Policy Inform Practice?

    ERIC Educational Resources Information Center

    Thackara, Susan Tomchak

    2014-01-01

    Though many American educators embrace technology in classrooms, administrators can create policies that inhibit technology such as mobile phone use in classrooms or on district property. These policies range from restrictive with no mobile phone use permitted, to liberal in which unrestricted use of mobile phones is allowed. The purpose of this…

  9. Optimizing the Usability of Mobile Phones for Individuals Who Are Deaf

    ERIC Educational Resources Information Center

    Liu, Chien-Hsiou; Chiu, Hsiao-Ping; Hsieh, Ching-Lin; Li, Rong-Kwer

    2010-01-01

    Mobile phones are employed as an assistive platform to improve the living quality of individuals who are deaf. However, deaf individuals experience difficulties using existing functions on mobile phones. This study identifies the functions that are inadequate and insufficient for deaf individuals using existing mobile phones. Analytical results…

  10. 78 FR 40171 - Certain Wireless Devices, Including Mobile Phones and Tablets; Notice Of Receipt of Complaint...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ... COMMISSION Certain Wireless Devices, Including Mobile Phones and Tablets; Notice Of Receipt of Complaint... complaint entitled Certain Wireless Devices, Including Mobile Phones and Tablets, DN 2964; the Commission is... importation of certain wireless devices, including mobile phones and tablets. The complaint names...

  11. 78 FR 47410 - Certain Wireless Devices, Including Mobile Phones and Tablets Institution of Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-05

    ... COMMISSION Certain Wireless Devices, Including Mobile Phones and Tablets Institution of Investigation AGENCY... within the United States after importation of certain wireless devices, including mobile phones and... wireless devices, including mobile phones and tablets by reason of infringement of one or more of claims...

  12. 78 FR 32689 - Certain Portable Electronic Communications Devices, Including Mobile Phones and Components...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-31

    ... COMMISSION Certain Portable Electronic Communications Devices, Including Mobile Phones and Components Thereof..., Including Mobile Phones and Components Thereof, DN 2958; the Commission is soliciting comments on any public... communications devices, including mobile phones and components thereof. The complaint names as respondents...

  13. The Relationship between Mobile Phone Use, Metacognitive Awareness and Academic Achievement

    ERIC Educational Resources Information Center

    Dos, Bulent

    2014-01-01

    Mobile phones are getting smarter and the usage through university students becoming more popular. University students using mobile phones for talking, for texting message, for Internet search, for listening music, watching videos, playing games, using social media etc. Mobile phones are not accessory any more, they are integrated like our…

  14. The usage of cell phones and the feeling to them in modern Japanese college students.

    PubMed

    Sato, Mayumi; Sekine, Takiko

    2010-06-01

    The aim of this study is to investigate how and to what extent modern people's life is affected by cell phones, which have been rapidly penetrating into the people's individual life. Surveys were conducted by questionnaires to Japanese college students (288 females and 54 males, ages 18 to 21) about their dependency on cell phones and habits of using them. The result was analyzed by the KJ method extracting the typical feelings about cell phones. Forty typical feelings were rated by 5 levels and analyzed in relation to the using years and the frequency per day. About 20% of the students used cell phones more than 30 times a day and for more than 3 hours in average per day. A decisive point concerning the users' dependency on cell phones seemed to exist between the daily use of 30 times and 40 times. At the same time, female students appeared more dependent on cell phones. Those feelings were classified into 6 groups; being 'dependent' on cell phones, regarding cell phones as 'important', 'necessary', 'convenient', just a 'method' of communication, and 'troublesome'. The percentages of those who felt cell phones as convenient, a method, important and necessary were high both in males and females. The dependence on cell phones seemed to be affirmative in both sexes, but males consistently felt cell phones as methods, whereas females tended to be more dependent on them from psychological reasons. Consequently, there were observed some differences between males and females in their use and feelings to cell phones.

  15. Uses of the Cell Phone for Education in the Philippines and Mongolia

    ERIC Educational Resources Information Center

    Librero, Felix; Ramos, Angelo Juan; Ranga, Adelina I.; Trinona, Jerome; Lambert, David

    2007-01-01

    The cell phone, now the most widely used medium in Asia, has major educational implications. Most users, however, do not realize the cell phone's potential for education, nor even for the communication functions for which it was originally designed. Most educators still see the computer and the cell phone as unrelated devices, and the tiny cell…

  16. Mobile Phone Applications in Academic Library Services: A Students' Feedback Survey

    ERIC Educational Resources Information Center

    Karim, Nor Shahriza Abdul; Darus, Siti Hawa; Hussin, Ramlah

    2006-01-01

    Purpose: This study seeks to explore the utilization of mobile phone services in the educational environment, explore the nature of mobile phone use among university students, and investigate the perception of university students on mobile phone uses in library and information services. Design/methodology/approach: The study used a review of…

  17. 77 FR 54651 - Study on the Use of Cell Phones On Board Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-05

    ... Cell Phones On Board Aircraft AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of...) directed the Administrator of the FAA to conduct a study on the impact of the use of cell phones for voice... Cell Phone Study Comments using any of the following methods: E-Mail: Send comments to...

  18. 78 FR 27441 - NIJ Evaluation of Hand-Held Cell Phone Detector Devices

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-10

    ... of Justice Programs NIJ Evaluation of Hand-Held Cell Phone Detector Devices AGENCY: National...) is soliciting interest in supplying hand-held cell phone detector devices for participation in an... soliciting interest in supplying hand-held cell phone detector devices for participation in an evaluation...

  19. Cell Phones in the Classroom: Teachers' Perspectives of Inclusion, Benefits, and Barriers

    ERIC Educational Resources Information Center

    Thomas, Kevin M.; O'Bannon, Blanche W.; Bolton, Natalie

    2013-01-01

    Historically viewed as a disruption by teachers, cell phones have been banned from 69% of classrooms (Common Sense Media, 2009). The increased ubiquity and instructional features of cell phones have prompted some teachers to re-evaluate the ban and consider the benefits associated with allowing cell phones in the classroom. This study surveyed 79…

  20. College Students' Cell Phone Use, Beliefs, and Effects on Their Learning

    ERIC Educational Resources Information Center

    Elder, Anastasia D.

    2013-01-01

    The purpose of this study is to explore college students' self-reported cell phone use and beliefs and investigate the effect on student learning. Eighty-eight college students responded to a questionnaire about their use of cell phones during classes, studying, and driving and about their beliefs about how cell phones impact their schoolwork. In…

  1. A Happy and Engaged Class without Cell Phones? It's Easier than You Think

    ERIC Educational Resources Information Center

    Katz, Louise; Lambert, Warren

    2016-01-01

    Although there have been many suggestions for incorporating cell phone use into classroom activities, there have been few suggestions for removing cell phone use from the classroom. This article presents an easy-to-implement method using positive reinforcement that effectively removes cell phones from the classroom in a way that is highly endorsed…

  2. Improving the Usability of a Mainstream Cell Phone for Individuals with Low Vision

    ERIC Educational Resources Information Center

    Wagner, Jennifer; Vanderheiden, Gregg C.; Sesto, Mary E.

    2006-01-01

    This study investigated improving the usability of a mainstream cell phone for use by individuals with low vision by providing a means to display the text of the keys in large print on the phone's screen. Two enlarging techniques (suspend and display and delay and display) were developed, and the programs were loaded into the cell phone. The…

  3. Sleep after mobile phone exposure in subjects with mobile phone-related symptoms.

    PubMed

    Lowden, Arne; Akerstedt, Torbjörn; Ingre, Michael; Wiholm, Clairy; Hillert, Lena; Kuster, Niels; Nilsson, Jens P; Arnetz, Bengt

    2011-01-01

    Several studies show increases in activity for certain frequency bands (10-14 Hz) and visually scored parameters during sleep after exposure to radiofrequency electromagnetic fields. A shortened REM latency has also been reported. We investigated the effects of a double-blind radiofrequency exposure (884 MHz, GSM signaling standard including non-DTX and DTX mode, time-averaged 10 g psSAR of 1.4 W/kg) on self-evaluated sleepiness and objective EEG measures during sleep. Forty-eight subjects (mean age 28 years) underwent 3 h of controlled exposure (7:30-10:30 PM; active or sham) prior to sleep, followed by a full-night polysomnographic recording in a sleep laboratory. The results demonstrated that following exposure, time in Stages 3 and 4 sleep (SWS, slow-wave sleep) decreased by 9.5 min (12%) out of a total of 78.6 min, and time in Stage 2 sleep increased by 8.3 min (4%) out of a total of 196.3 min compared to sham. The latency to Stage 3 sleep was also prolonged by 4.8 min after exposure. Power density analysis indicated an enhanced activation in the frequency ranges 0.5-1.5 and 5.75-10.5 Hz during the first 30 min of Stage 2 sleep, with 7.5-11.75 Hz being elevated within the first hour of Stage 2 sleep, and bands 4.75-8.25 Hz elevated during the second hour of Stage 2 sleep. No pronounced power changes were observed in SWS or for the third hour of scored Stage 2 sleep. No differences were found between controls and subjects with prior complaints of mobile phone-related symptoms. The results confirm previous findings that RF exposure increased the EEG alpha range in the sleep EEG, and indicated moderate impairment of SWS. Furthermore, reported differences in sensitivity to mobile phone use were not reflected in sleep parameters.

  4. Prevalence of problematic mobile phone use in British adolescents.

    PubMed

    Lopez-Fernandez, Olatz; Honrubia-Serrano, Luisa; Freixa-Blanxart, Montserrat; Gibson, Will

    2014-02-01

    The problematic use of mobile phones among adolescents has not been widely studied. There are very few instruments for assessing potential technological addiction to mobile phones, or for categorizing different types of users or uses. The most widely used scale is the Mobile Phone Problem Use Scale (MPPUS), which is used to study adult populations, and has been applied in various forms in international contexts. The aims of this study were to adapt the Spanish version of this scale (MPPUSA) to British adolescents, and then to estimate the prevalence of possible problematic users. A questionnaire was administered to a sample of 1,529 secondary school pupils aged between 11 and 18 years, with 1,026 completed questionnaires being collected. The analysis showed that the factor and construct validity and reliability were comparable to those obtained in previous studies. The prevalence of problematic users among the students was 10%, and the typical problematic user tended to be an adolescent between 11 and 14 years old, studying in a public school, who considered themselves to be an expert user of this technology, who made extensive use of his/her mobile phone, and who attributed the same problem of use among their peers. These users presented notable scores in all the symptoms covered by the scale used to assess problematic use. In conclusion, the adaptation of the MPPUSA as a screening scale for British adolescents presents good sensitivity and specificity for detecting the main addictive symptoms proposed in this validated version.

  5. Why We All Need Call Waiting on Our Phones

    ERIC Educational Resources Information Center

    Higbie, Jack

    2013-01-01

    Have you ever noticed that you can go all day without a single call on your phone and then suddenly you get two calls at once? This is actually not as uncommon as it sounds and there is a mathematical reason for why we should expect it to happen, believe it or not.

  6. Cell Phone Use by Adolescents with Asperger Syndrome

    ERIC Educational Resources Information Center

    Durkin, Kevin; Whitehouse, Andrew; Jaquet, Emma; Ziatas, Kathy; Walker, Allan J.

    2010-01-01

    While young people have generally been at the forefront of the adoption and use of new communications technologies, little is known of uses by exceptional youth. This study compares cell phone use by a group of adolescents with Asperger Syndrome (n = 35) with that by a group of adolescents with typical development (n = 35). People with Asperger…

  7. Reexamining the Effectiveness of Vocabulary Learning via Mobile Phones

    ERIC Educational Resources Information Center

    Zhang, Haisen; Song, Wei; Burston, Jack

    2011-01-01

    The purpose of this study is to reexamine the effectiveness of vocabulary learning via mobile phones. Students (N=78) from two intact classes of sophomores at a Chinese university were assigned to two groups: the SMS group (the experimental group) and the paper group (the control group). Then, they were administered a pretest to identify the level…

  8. Malaria Diagnosis Using a Mobile Phone Polarized Microscope

    NASA Astrophysics Data System (ADS)

    Pirnstill, Casey W.; Coté, Gerard L.

    2015-08-01

    Malaria remains a major global health burden, and new methods for low-cost, high-sensitivity, diagnosis are essential, particularly in remote areas with low-resource around the world. In this paper, a cost effective, optical cell-phone based transmission polarized light microscope system is presented for imaging the malaria pigment known as hemozoin. It can be difficult to determine the presence of the pigment from background and other artifacts, even for skilled microscopy technicians. The pigment is much easier to observe using polarized light microscopy. However, implementation of polarized light microscopy lacks widespread adoption because the existing commercial devices have complicated designs, require sophisticated maintenance, tend to be bulky, can be expensive, and would require re-training for existing microscopy technicians. To this end, a high fidelity and high optical resolution cell-phone based polarized light microscopy system is presented which is comparable to larger bench-top polarized microscopy systems but at much lower cost and complexity. The detection of malaria in fixed and stained blood smears is presented using both, a conventional polarized microscope and our cell-phone based system. The cell-phone based polarimetric microscopy design shows the potential to have both the resolution and specificity to detect malaria in a low-cost, easy-to-use, modular platform.

  9. The Impact of Wireless Phone Technology on Users in Nigeria

    ERIC Educational Resources Information Center

    Ezenezi, Robins E.

    2010-01-01

    Studies have shown that with the increasing diffusion of cell phones in Nigeria have come with problems such as network congestion, service inefficiencies, rising costs, and increased taxes. The purpose of this study was to examine and explore which, if any, sociopersonal variables (theft of handsets, educational levels, security risk) and…

  10. Using Mobile Phone Diaries to Explore Children's Everyday Lives

    ERIC Educational Resources Information Center

    Plowman, Lydia; Stevenson, Olivia

    2012-01-01

    This article describes a novel approach to experience sampling as a response to the challenges of researching the everyday lives of young children at home. Parents from 11 families used mobile phones to send the research team combined picture and text messages to provide "experience snapshots" of their child's activities six times on each of three…

  11. Building Mathematical Knowledge in an Authentic Mobile Phone Environment

    ERIC Educational Resources Information Center

    Daher, Wajeeh

    2010-01-01

    Although many researchers have examined knowledge building in traditional settings and distance learning, few have examined middle school students' building of mathematical knowledge using mobile phones. The present study uses two well-known models of knowledge building to carry out the examination: the interactive analysis model of knowledge…

  12. Mobile Phones for Spain's University Entrance Examination Language Test

    ERIC Educational Resources Information Center

    García Laborda, Jesús; Magal Royo, Teresa; Litzler, Mary Frances; Giménez López, José Luis

    2014-01-01

    Few tests were delivered using mobile phones a few years ago, but the flexibility and capability of these devices make them valuable tools even for high stakes testing. This paper addresses research done through the PAULEX (2007-2010) and OPENPAU (2012-2014) research projects at the Universidad Politécnica de Valencia and Universidad de Alcalá…

  13. Mobile Phone as Pedagogical Tools: Are Teachers Ready?

    ERIC Educational Resources Information Center

    Ismail, Issham; Azizan, Siti Norbaya; Azman, Nizuwan

    2013-01-01

    This study examined the teachers' perceptions on the implementation of mobile learning via mobile phone at schools. The sample for this study comprised thirty eight teachers who were teaching Information Technology (IT) subjects from various primary schools in Penang, Malaysia. A quantitative survey was administered to the respondents whereby…

  14. The Role of Mobile Phones in Family Communication

    ERIC Educational Resources Information Center

    Devitt, Kerry; Roker, Debi

    2009-01-01

    Whilst there is a wealth of research into family communication and family relationships, there is little information about whether (and if so how) mobile phones have impacted on these processes. The authors' study involved individual semi-structured interviews with 60 families, including parents/carers and young people aged 11-17, to investigate…

  15. Learning Mathematics in the Mobile Phone Environment: Students' Emotions

    ERIC Educational Resources Information Center

    Daher, Wajeeh

    2011-01-01

    Researchers point at the importance of emotions and its study in mathematics education. This research examines middle school students' emotions during learning mathematics outdoors using the mobile phone. The constant comparison method was used to analyze 30 middle school students' emotions while carrying out 15 outdoor activities using the mobile…

  16. Wavefront measurement of plastic lenses for mobile-phone applications

    NASA Astrophysics Data System (ADS)

    Huang, Li-Ting; Cheng, Yuan-Chieh; Wang, Chung-Yen; Wang, Pei-Jen

    2016-08-01

    In camera lenses for mobile-phone applications, all lens elements have been designed with aspheric surfaces because of the requirements in minimal total track length of the lenses. Due to the diffraction-limited optics design with precision assembly procedures, element inspection and lens performance measurement have become cumbersome in the production of mobile-phone cameras. Recently, wavefront measurements based on Shack-Hartmann sensors have been successfully implemented on injection-molded plastic lens with aspheric surfaces. However, the applications of wavefront measurement on small-sized plastic lenses have yet to be studied both theoretically and experimentally. In this paper, both an in-house-built and a commercial wavefront measurement system configured on two optics structures have been investigated with measurement of wavefront aberrations on two lens elements from a mobile-phone camera. First, the wet-cell method has been employed for verifications of aberrations due to residual birefringence in an injection-molded lens. Then, two lens elements of a mobile-phone camera with large positive and negative power have been measured with aberrations expressed in Zernike polynomial to illustrate the effectiveness in wavefront measurement for troubleshooting defects in optical performance.

  17. Forensic analysis of the microbiome of phones and shoes

    DOE PAGES

    Lax, Simon; Hampton-Marcell, Jarrad T.; Gibbons, Sean M.; ...

    2015-05-12

    Background: Microbial interaction between human-associated objects and the environments we inhabit may have forensic implications, and the extent to which microbes are shared between individuals inhabiting the same space may be relevant to human health and disease transmission. In this study, two participants sampled the front and back of their cell phones, four different locations on the soles of their shoes, and the floor beneath them every waking hour over a 2-day period. A further 89 participants took individual samples of their shoes and phones at three different scientific conferences. Results: Samples taken from different surface types maintained significantly differentmore » microbial community structures. The impact of the floor microbial community on that of the shoe environments was strong and immediate, as evidenced by Procrustes analysis of shoe replicates and significant correlation between shoe and floor samples taken at the same time point. Supervised learning was highly effective at determining which participant had taken a given shoe or phone sample, and a Bayesian method was able to determine which participant had taken each shoe sample based entirely on its similarity to the floor samples. Both shoe and phone samples taken by conference participants clustered into distinct groups based on location, though much more so when an unweighted distance metric was used, suggesting sharing of low-abundance microbial taxa between individuals inhabiting the same space. In conclusion, correlations between microbial community sources and sinks allow for inference of the interactions between humans and their environment.« less

  18. Forensic analysis of the microbiome of phones and shoes

    SciTech Connect

    Lax, Simon; Hampton-Marcell, Jarrad T.; Gibbons, Sean M.; Colares, Geórgia Barguil; Smith, Daniel; Eisen, Jonathan A.; Gilbert, Jack A.

    2015-05-12

    Background: Microbial interaction between human-associated objects and the environments we inhabit may have forensic implications, and the extent to which microbes are shared between individuals inhabiting the same space may be relevant to human health and disease transmission. In this study, two participants sampled the front and back of their cell phones, four different locations on the soles of their shoes, and the floor beneath them every waking hour over a 2-day period. A further 89 participants took individual samples of their shoes and phones at three different scientific conferences. Results: Samples taken from different surface types maintained significantly different microbial community structures. The impact of the floor microbial community on that of the shoe environments was strong and immediate, as evidenced by Procrustes analysis of shoe replicates and significant correlation between shoe and floor samples taken at the same time point. Supervised learning was highly effective at determining which participant had taken a given shoe or phone sample, and a Bayesian method was able to determine which participant had taken each shoe sample based entirely on its similarity to the floor samples. Both shoe and phone samples taken by conference participants clustered into distinct groups based on location, though much more so when an unweighted distance metric was used, suggesting sharing of low-abundance microbial taxa between individuals inhabiting the same space. In conclusion, correlations between microbial community sources and sinks allow for inference of the interactions between humans and their environment.

  19. From Phone to Phoneme: What Can We Understand from Babble.

    ERIC Educational Resources Information Center

    Yoshinaga-Itano, Christine; And Others

    1992-01-01

    This article describes the Colorado Phonetic/Phonologic Assessment of Hearing-Impaired Infants and Toddlers (PHONE) and the speech of 91 hearing-impaired infants and toddlers, examining number of vowels, consonants, elements per utterance, and utterances; differences by age and by hearing loss for each vowel and consonant; and relationship to…

  20. Smartphone and mobile phone security for the clinician.

    PubMed

    Barber, Harry

    2016-08-02

    Smartphones are near ubiquitous and widely used by doctors in discussing patients. In all communication doctors should take steps to protect confidentiality, yet there is a paucity of available information on how clinicians can bolster cyber security and minimize risk when using their mobile phone.

  1. Integrating Cell Phones into the Secondary Montessori Classroom

    ERIC Educational Resources Information Center

    DeWitte, Cynthia M.

    2010-01-01

    A disconnect exists between how students communicate using their mobile phones outside of school and how they use them in the classroom. Many high schools across the United States ban their use, even though numerous mobile learning strategies are available. Although research pertaining to m-learning has been conducted at the collegiate level, a…

  2. Cell Phones in American High Schools: A National Survey

    ERIC Educational Resources Information Center

    Obringer, S. John; Coffey, Kent

    2007-01-01

    A survey instrument to determine school policy and practice regarding cell phone use by teachers and students was developed using a literature review, a panel of experts, and then a pilot study with typical respondents. The survey was mailed out randomly to 200 high school principals representing all 50 states. The return rate was 56 percent with…

  3. Internet and Cell Phone Based Smoking Cessation Programs among Adolescents

    ERIC Educational Resources Information Center

    Mehta, Purvi; Sharma, Manoj

    2010-01-01

    Smoking cessation among adolescents is a salient public health issue, as it can prevent the adoption of risky health behaviors and reduce negative impacts on health. Self-efficacy, household and social support systems, and perceived benefits are some important cessation determinants. With the popular use of the Internet and cell phone usage among…

  4. Malaria Diagnosis Using a Mobile Phone Polarized Microscope

    PubMed Central

    Pirnstill, Casey W.; Coté, Gerard L.

    2015-01-01

    Malaria remains a major global health burden, and new methods for low-cost, high-sensitivity, diagnosis are essential, particularly in remote areas with low-resource around the world. In this paper, a cost effective, optical cell-phone based transmission polarized light microscope system is presented for imaging the malaria pigment known as hemozoin. It can be difficult to determine the presence of the pigment from background and other artifacts, even for skilled microscopy technicians. The pigment is much easier to observe using polarized light microscopy. However, implementation of polarized light microscopy lacks widespread adoption because the existing commercial devices have complicated designs, require sophisticated maintenance, tend to be bulky, can be expensive, and would require re-training for existing microscopy technicians. To this end, a high fidelity and high optical resolution cell-phone based polarized light microscopy system is presented which is comparable to larger bench-top polarized microscopy systems but at much lower cost and complexity. The detection of malaria in fixed and stained blood smears is presented using both, a conventional polarized microscope and our cell-phone based system. The cell-phone based polarimetric microscopy design shows the potential to have both the resolution and specificity to detect malaria in a low-cost, easy-to-use, modular platform. PMID:26303238

  5. Waste to real energy: the first MFC powered mobile phone.

    PubMed

    Ieropoulos, Ioannis A; Ledezma, Pablo; Stinchcombe, Andrew; Papaharalabos, George; Melhuish, Chris; Greenman, John

    2013-10-07

    This communication reports for the first time the charging of a commercially available mobile phone, using Microbial Fuel Cells (MFCs) fed with real neat urine. The membrane-less MFCs were made out of ceramic material and employed plain carbon based electrodes.

  6. Managing Diabetes in Pregnancy Using Cell Phone/Internet Technology

    PubMed Central

    Soules, Karen; Church, Kacy; Shaha, Steve; Burlingame, Janet; Graham, George; Sauvage, Lynnae; Zalud, Ivica

    2015-01-01

    In Brief For pregnant women with diabetes, using cell phone/Internet technology to track and report self-monitoring of blood glucose results improves compliance and satisfaction compared to using the more traditional methods of log books, telephone calls, and voicemail messages. PMID:26487790

  7. Development of Adaptive Kanji Learning System for Mobile Phone

    ERIC Educational Resources Information Center

    Li, Mengmeng; Ogata, Hiroaki; Hou, Bin; Hashimoto, Satoshi; Liu, Yuqin; Uosaki, Noriko; Yano, Yoneo

    2010-01-01

    This paper describes an adaptive learning system based on mobile phone email to support the study of Japanese Kanji. In this study, the main emphasis is on using the adaptive learning to resolve one common problem of the mobile-based email or SMS language learning systems. To achieve this goal, the authors main efforts focus on three aspects:…

  8. College Smoking-Cessation Using Cell Phone Text Messaging.

    ERIC Educational Resources Information Center

    Obermayer, Jami L.; Riley, William T.; Jean-Mary, Jersino

    2004-01-01

    Although rates of smoking among college-aged students continue to rise, few interventions that focus on college smokers' unique motivations and episodic smoking patterns exist. The authors developed and evaluated a prototype program targeting college students that integrates Web and cell phone technologies to deliver a smoking-cessation…

  9. Application System Architecture for Cellular Phones by Dividing Interaction Logics

    NASA Astrophysics Data System (ADS)

    Kitamura, Misayo; Todoroki, Nobutoshi; Akiyoshi, Masanori; Kojima, Taizo

    This paper describes application system architecture using cellular phones as user interface devices, which enables users to interact with the system by graphic symbols on a client screen. Our approach has the following features: (i) divided interaction logics running on a server and a Java phone client; both interaction logics cooperate to accomplish a user's operation using a simplified script, (ii) local interaction which enables users to handle figures on a client screen without connecting to a server, and (iii) device-independent script which hides the differences of API sets among various cellular phones. By using this architecture, complicated figures including lots of graphic symbols can be displayed in spite of program-size limitation on a client device, and application programs including same interaction logics are just described once for various cellular phones. Our experiments show the advantage of the local interaction. A client program can respond immediately when handling complicated figures. The ratio of requests to the server is reduced to 23%. It takes less than 9 seconds to display typical contents, which is good enough for practical use. This method also reduces development costs at the second development or later.

  10. Empirical Properties of Multilingual Phone-To-Word Transduction

    DTIC Science & Technology

    2008-01-01

    EMPIRICAL PROPERTIES OF MULTILINGUAL PHONE-TO-WORD TRANSDUCTION Geoffrey Zweig Microsoft Research gzweig@microsoft.com Jon Nedel U.S. Department of...69–88, 2002. [2] G. Saon, G. Zweig , and D. Povey, “Anatomy of an extremely fast LVCSR decoder,” in Interspeech, 2005. [3] S. Ortmanns, H. Ney, and A

  11. Still Trying to "Make the Call" on Student Cell Phones

    ERIC Educational Resources Information Center

    Taylor, Kelley R.

    2008-01-01

    In fall 2007, the American Civil Liberties Union (ACLU) of Colorado accused Colorado school officials of committing felonies and violating students' privacy rights. The controversy stemmed from allegations that a high school assistant principal read and transcribed text messages from a cell phone that school officials had taken away from a…

  12. Older Japanese Adults and Mobile Phones: An Applied Ethnographic Study

    ERIC Educational Resources Information Center

    Hachiya, Kumiko

    2010-01-01

    This qualitative research investigates the meaning of "keitai" (mobile phones) for older Japanese adults between the ages of 59 and 79. Participants' emails from keitai, handwritten daily logs, and audio and video recordings from meetings and interviews were collected during my stay of nearly seven months in one of the largest cities in…

  13. Biomedical sensor technologies on the platform of mobile phones

    NASA Astrophysics Data System (ADS)

    Liu, Lin; Liu, Jing

    2011-06-01

    Biomedical sensors have been widely used in various areas of biomedical practices, which play an important role in disease detection, diagnosis, monitoring, treatment, health management, and so on. However, most of them and their related platforms are generally not easily accessible or just too expensive or complicated to be kept at home. As an alternative, new technologies enabled from the mobile phones are gradually changing such situations. As can be freely available to almost everyone, mobile phone offers a unique way to improve the conventional medical care through combining with various biomedical sensors. Moreover, the established systems will be both convenient and low cost. In this paper, we present an overview on the state-of-art biomedical sensors, giving a brief introduction of the fundamental principles and showing several new examples or concepts in the area. The focus was particularly put on interpreting the technical strategies to innovate the biomedical sensor technologies based on the platform of mobile phones. Some challenging issues, including feasibility, usability, security, and effectiveness, were discussed. With the help of electrical and mechanical technologies, it is expected that a full combination between the biomedical sensors and mobile phones will bring a bright future for the coming pervasive medical care.

  14. Malaysian University Students' Use of Mobile Phones for Study

    ERIC Educational Resources Information Center

    Pullen, Darren; J-F; Swabey, Karen; Abadooz, M.; Sing, Termit Kaur Ranjit

    2015-01-01

    Mobile technology coupled with Internet accessibility has increased not only how we communicate but also how we might engage in learning. The ubiquity of mobile technology, such as smart phones and tablet devices, makes it a valuable tool for accessing learning resources on the Internet. The unified theory of acceptance and use of technology…

  15. A mobile phone-based approach to detection of hemolysis.

    PubMed

    Archibong, Edikan; Konnaiyan, Karthik Raj; Kaplan, Howard; Pyayt, Anna

    2017-02-15

    Preeclampsia and HELLP (hemolysis, elevated liver enzymes, and low platelet count) syndrome are pregnancy-related complications with high rates of morbidity and mortality. HELLP syndrome, in particular, can be difficult to diagnose. Recent work suggests that elevated levels of free cell hemoglobin in blood plasma can, as early as the first trimester, potentially serve as a diagnostic biomarker for impending complications. We therefore developed a point-of-care mobile phone-based platform that can quickly characterize a patient's level of hemolysis by measuring the color of blood plasma. The custom hardware and software are designed to be easy to use. A sample of the whole blood (~10µL or less) is first collected into a clear capillary tube or microtube, which is then inserted into a low-cost 3D-printed sample holder attached to the phone. A 5-10min period of quiescence allows for gravitational sedimentation of the red blood cells, leaving a layer of yellowish plasma at the top of the tube. The phone camera then photographs the capillary tube and analyzes the color components of the cell-free plasma layer. The software converts these color values to a concentration of free hemoglobin, based on a built-in calibration curve, and reports the patient's hemolysis level: non-hemolyzed, slightly hemolyzed, mildly hemolyzed, frankly hemolyzed, or grossly hemolyzed.. The accuracy of the method is ~1mgdL(-1). This phone-based point-of-care system provides the potentially life-saving advantage of a turnaround time of about 10min (versus 4+hours for conventional laboratory analytical methods) and a cost of approximately one dollar USD (assuming you have the phone and the software are already available).

  16. Effect of Mobile Phone Radiofrequency Electromagnetic Fields on.

    PubMed

    Umar, Z U; Abubakar, M B; Ige, J; Igbokwe, U V; Mojiminiyi, F B O; Isezuo, S A

    2014-12-29

    Since cell phones emit radiofrequency electromagnetic fields (EMFs), this study tested the hypothesis that cell phones placed near the heart may interfere with the electrical rhythm of the heart or affect the blood pressure. Following informed consent, eighteen randomly selected apparently healthy male volunteers aged 21.44 ± 0.53 years had their blood pressure, pulse rates and ECG measured before and after acute exposure to a cell phone. The ECG parameters obtained were: heart rate (HR), QRS complex duration (QRS), PR interval (PR) and Corrected QT interval (QTc). Results are presented as mean ± SEM. Statistical analyses were done using two-tailed paired t test for blood pressure and pulse rate data and one way ANOVA with a post hoc Tukey test for the ECG data. P<0.05 was considered statistically significant. The blood pressure and pulse rates before and after exposure to the cell phone showed no significant difference. The ECG parameters (HR: beats/min, QRS:ms, PR:ms and QTc respectively) did not differ before (66.33 ± 2.50, 91.78 ± 1.36, 151.67 ± 5.39 and 395.44 ± 4.96), during (66.33 ± 2.40, 91.11 ± 1.61, 153.67 ± 5.06 and 394.33 ± 4.05) and after calls (67.22 ± 2.77, 91.11 ± 1.67, 157.44 ± 4.46 and 396.56 ± 4.93) compared to baseline (67.17 ± 2.19, 94.33 ± 1.57, 150.56 ± 4.93 and 399.56 ± 3.88). These results suggest that acute exposure to EMFs from cell phones placed near the heart may not interfere with the electrical activity of the heart or blood pressure in healthy individuals.

  17. A mobile phone-based Communication Support System for elderly persons.

    PubMed

    Ogawa, Hidekuni; Yonezawa, Yoshiharu; Maki, Hiromichi; Caldwell, W Morton

    2007-01-01

    A mobile phone-based communication support system has been developed for assisting elderly people to communicate by mobile phone. The system consists of a low power mobile phone (PHS phone) having a large liquid crystal screen. When an elderly person telephones, they then choose a communication person from registered support personnel pictures displayed on the liquid crystal screen. The PHS phone dials that person automatically. The elderly person can therefore easily recognize and verify the person. The newly-developed communication support system assists a significant percentage of elderly people with poor eyesight and memory, which frequently cause communication problems, such as dialing a wrong number.

  18. Assessment of extremely low frequency magnetic field exposure from GSM mobile phones.

    PubMed

    Calderón, Carolina; Addison, Darren; Mee, Terry; Findlay, Richard; Maslanyj, Myron; Conil, Emmanuelle; Kromhout, Hans; Lee, Ae-kyoung; Sim, Malcolm R; Taki, Masao; Varsier, Nadège; Wiart, Joe; Cardis, Elisabeth

    2014-04-01

    Although radio frequency (RF) electromagnetic fields emitted by mobile phones have received much attention, relatively little is known about the extremely low frequency (ELF) magnetic fields emitted by phones. This paper summarises ELF magnetic flux density measurements on global system for mobile communications (GSM) mobile phones, conducted as part of the MOBI-KIDS epidemiological study. The main challenge is to identify a small number of generic phone models that can be used to classify the ELF exposure for the different phones reported in the study. Two-dimensional magnetic flux density measurements were performed on 47 GSM mobile phones at a distance of 25 mm. Maximum resultant magnetic flux density values at 217 Hz had a geometric mean of 221 (+198/-104) nT. Taking into account harmonic data, measurements suggest that mobile phones could make a substantial contribution to ELF exposure in the general population. The maximum values and easily available variables were poorly correlated. However, three groups could be defined on the basis of field pattern indicating that manufacturers and shapes of mobile phones may be the important parameters linked to the spatial characteristics of the magnetic field, and the categorization of ELF magnetic field exposure for GSM phones in the MOBI-KIDS study may be achievable on the basis of a small number of representative phones. Such categorization would result in a twofold exposure gradient between high and low exposure based on type of phone used, although there was overlap in the grouping.

  19. Cell phone use among homeless youth: potential for new health interventions and research.

    PubMed

    Rice, Eric; Lee, Alex; Taitt, Sean

    2011-12-01

    Cell phone use has become nearly ubiquitous among adolescents in the United States. Despite the potential for cell phones to facilitate intervention, research, and care for homeless youth, no data exists to date on cell phone use among this population. In 2009, a survey of cell phone use was conducted among a non-probability sample of 169 homeless youth in Los Angeles, CA. Levels of ownership and use, instrumental uses (connecting to case workers, employers) and patterns of connecting to various network types were assessed (family, home-based peers, street-based peers). Differences in socio-demographic characteristics and cell phone ownership were assessed via t test and chi-square statistics. Sixty-two percent of homeless youth own a cell phone; 40% have a working phone. Seventeen percent used their phone to call a case manager, 36% to call either a potential or current employer. Fifty-one percent of youth connected with home-based peers on the phone and 41% connected to parents. Cell phones present new opportunities for intervention research, connecting homeless youth to family and home-based peers who can be sources of social support in times of need. Moreover, cell phones provide researchers and providers with new avenues to maintain connections with these highly transient youth.

  20. Extent and variations in mobile phone use among drivers of heavy vehicles in Denmark.

    PubMed

    Troglauer, Thomas; Hels, Tove; Christens, Peter Falck

    2006-01-01

    A substantial body of research has shown that use of mobile phones while driving can impair driving performance and increase the risk of being involved in accidents. Similarly, mobile phone use seems to be an increasing activity thus representing a relevant traffic safety issue. This paper investigates the extent and variations in mobile phone use among drivers of heavy vehicles in Denmark. The data was collected through written questionnaires and had a response rate of 58%. It was found that more than 99% of the drivers used mobile phones while driving. Despite a prohibition of hand-held mobile phone use while driving 31% of the drivers reported to do so. Analysis of the variations in usage found a positive significant relationship between driving hours and phone use. A negative linear effect was found between age and phone use. Similarly, a positive significant association was found between the number of stops and the amount of phone use. 0.5% reported that their use of mobile phones had contributed to an accident, while 6% had experienced their mobile phone use causing a dangerous situation. However, 66% reported experiencing dangerous situations because of others road users' mobile phone use. Various implications of the findings are discussed particularly in relation to the drivers with high exposure.

  1. Microfungal contaminants on mobile phones of health services vocational school students in Marmaris, Turkey.

    PubMed

    Özkan, Vedat Kadir; Sülün, Yusuf

    2014-02-01

    In this study, it was aimed to determine microfungi on mobile phones. Totally, 50 mobile phones were used belonging to Health Services Vocational School students. The samples were taken by swabbing the screen and keys of mobile phones using moistened sterile swab sticks. A total of 24 different microfungal species were obtained belonging to Alternaria, Aspergillus, Cladosporium, Geotrichum, Penicillium, Phoma, Rhinocladiella, Scopulariopsis, Trichoderma, and Trichophyton genera. The genera of microfungi most abundant in terms of the number of species on the mobile phones were Aspergillus, Cladosporium, and Penicillium. Numerically, Cladosporium was found as the most abundant on the mobile phones. Cladosporium herbarum colonies were highest in number, followed by Cladosporium sphaerospermum, and Penicillium verrucosum var. cyclopium. When percentages of each species present on the mobile phones were considered, C. herbarum and C. sphaerospermum were the most common. There was a great similarity between the dominant microfungi isolated from mobile phones and dominant microfungi obtained from studies of atmospheric microfungi in Turkey.

  2. A Simple Cost-Effective Framework for iPhone Forensic Analysis

    NASA Astrophysics Data System (ADS)

    Husain, Mohammad Iftekhar; Baggili, Ibrahim; Sridhar, Ramalingam

    Apple iPhone has made significant impact on the society both as a handheld computing device and as a cellular phone. Due to the unique hardware system as well as storage structure, iPhone has already attracted the forensic community in digital investigation of the device. Currently available commercial products and methodologies for iPhone forensics are somewhat expensive, complex and often require additional hardware for analysis. Some products are not robust and often fail to extract optimal evidence without modifying the iPhone firmware which makes the analysis questionable in legal platforms. In this paper, we present a simple and inexpensive framework (iFF) for iPhone forensic analysis. Through experimental results using real device, we have shown the effectiveness of this framework in extracting digital evidence from an iPhone.

  3. The invisible addiction: Cell-phone activities and addiction among male and female college students

    PubMed Central

    PETNJI YAYA, LUC HONORE; MANOLIS, CHRIS

    2014-01-01

    Background and aims: The primary objective of the present study was to investigate which cell-phone activities are associated with cell-phone addiction. No research to date has studied the full-range of cell-phone activities, and their relationship to cell-phone addiction, across male and female cell-phone users. Methods: College undergraduates (N = 164) participated in an online survey. Participants completed the questionnaire as part of their class requirements. The questionnaire took 10 and 15 minutes to complete and contained a measure of cell-phone addiction and questions that asked how much time participants spent daily on 24 cell-phone activities. Results: Findings revealed cell-phone activities that are associated significantly with cell-phone addiction (e.g., Instagram, Pinterest), as well as activities that one might logically assume would be associated with this form of addiction but are not (e.g., Internet use and Gaming). Cell-phone activities that drive cell-phone addiction (CPA) were found to vary considerably across male and female cell-phone users. Although a strong social component drove CPA for both males and females, the specific activities associated with CPA differed markedly. Conclusions: CPA amongst the total sample is largely driven by a desire to connect socially. The activities found to be associated with CPA, however, differed across the sexes. As the functionality of cell-phones continues to expand, addiction to this seemingly indispensable piece of technology becomes an increasingly realistic possibility. Future research must identify the activities that push cell-phone use beyond its “;tipping point” where it crosses the line from a helpful tool to one that undermines our personal well-being and that of others. PMID:25595966

  4. Radiofrequency radiation injures trees around mobile phone base stations.

    PubMed

    Waldmann-Selsam, Cornelia; Balmori-de la Puente, Alfonso; Breunig, Helmut; Balmori, Alfonso

    2016-12-01

    In the last two decades, the deployment of phone masts around the world has taken place and, for many years, there has been a discussion in the scientific community about the possible environmental impact from mobile phone base stations. Trees have several advantages over animals as experimental subjects and the aim of this study was to verify whether there is a connection between unusual (generally unilateral) tree damage and radiofrequency exposure. To achieve this, a detailed long-term (2006-2015) field monitoring study was performed in the cities of Bamberg and Hallstadt (Germany). During monitoring, observations and photographic recordings of unusual or unexplainable tree damage were taken, alongside the measurement of electromagnetic radiation. In 2015 measurements of RF-EMF (Radiofrequency Electromagnetic Fields) were carried out. A polygon spanning both cities was chosen as the study site, where 144 measurements of the radiofrequency of electromagnetic fields were taken at a height of 1.5m in streets and parks at different locations. By interpolation of the 144 measurement points, we were able to compile an electromagnetic map of the power flux density in Bamberg and Hallstadt. We selected 60 damaged trees, in addition to 30 randomly selected trees and 30 trees in low radiation areas (n=120) in this polygon. The measurements of all trees revealed significant differences between the damaged side facing a phone mast and the opposite side, as well as differences between the exposed side of damaged trees and all other groups of trees in both sides. Thus, we found that side differences in measured values of power flux density corresponded to side differences in damage. The 30 selected trees in low radiation areas (no visual contact to any phone mast and power flux density under 50μW/m(2)) showed no damage. Statistical analysis demonstrated that electromagnetic radiation from mobile phone masts is harmful for trees. These results are consistent with the fact

  5. Interaction of mobile phones with superficial passive metallic implants.

    PubMed

    Virtanen, H; Huttunen, J; Toropainen, A; Lappalainen, R

    2005-06-07

    The dosimetry of exposure to radiofrequency (RF) electromagnetic (EM) fields of mobile phones is generally based on the specific absorption rate (SAR, W kg(-1)), which is the electromagnetic energy absorbed in the tissues per unit mass and time. In this study, numerical methods and modelling were used to estimate the effect of a passive, metallic (conducting) superficial implant on a mobile phone EM field and especially its absorption in tissues in the near field. Two basic implant models were studied: metallic pins and rings in the surface layers of the human body near the mobile phone. The aim was to find out 'the worst case scenario' with respect to energy absorption by varying different parameters such as implant location, orientation, size and adjacent tissues. Modelling and electromagnetic field calculations were carried out using commercial SEMCAD software based on the FDTD (finite difference time domain) method. The mobile phone was a 900 MHz or 1800 MHz generic phone with a quarter wave monopole antenna. A cylindrical tissue phantom models different curved sections of the human body such as limbs or a head. All the parameters studied (implant size, orientation, location, adjacent tissues and signal frequency) had a major effect on the SAR distribution and in certain cases high local EM fields arose near the implant. The SAR values increased most when the implant was on the skin and had a resonance length or diameter, i.e. about a third of the wavelength in tissues. The local peak SAR values increased even by a factor of 400-700 due to a pin or a ring. These highest values were reached in a limited volume close to the implant surface in almost all the studied cases. In contrast, without the implant the highest SAR values were generally reached on the skin surface. Mass averaged SAR(1 g) and SAR(10 g) values increased due to the implant even by a factor of 3 and 2, respectively. However, at typical power levels of mobile phones the enhancement is unlikely to

  6. NMR imaging of cell phone radiation absorption in brain tissue

    PubMed Central

    Gultekin, David H.; Moeller, Lothar

    2013-01-01

    A method is described for measuring absorbed electromagnetic energy radiated from cell phone antennae into ex vivo brain tissue. NMR images the 3D thermal dynamics inside ex vivo bovine brain tissue and equivalent gel under exposure to power and irradiation time-varying radio frequency (RF) fields. The absorbed RF energy in brain tissue converts into Joule heat and affects the nuclear magnetic shielding and the Larmor precession. The resultant temperature increase is measured by the resonance frequency shift of hydrogen protons in brain tissue. This proposed application of NMR thermometry offers sufficient spatial and temporal resolution to characterize the hot spots from absorbed cell phone radiation in aqueous media and biological tissues. Specific absorption rate measurements averaged over 1 mg and 10 s in the brain tissue cover the total absorption volume. Reference measurements with fiber optic temperature sensors confirm the accuracy of the NMR thermometry. PMID:23248293

  7. Temporal and spatial regularity of mobile-phone data

    NASA Astrophysics Data System (ADS)

    Hoevel, Philipp; Barabasi, Albert-Laszlo

    2012-02-01

    Network science is a vibrant, interdisciplinary research area with strong connections to a plethora of different fields. As the amount of empirically obtained datasets increases more and more, approaches from network sciences continue to enhance our understanding, for instance, of human dynamics. The available data often consist of temporal as well as spatial information. In our case they originate from anonymized mobile-phone traces, which include information about the timing of the connections between two mobile phones and also their positions. Thus, the data contains an additional social component. In this study, we evaluate patterns of human behavior identifying both temporal and spatial regularity. This leads to a detailed mobility analysis on various timescales and contributes to a general theory of synchronization in complex, real-world networks.

  8. College smoking-cessation using cell phone text messaging.

    PubMed

    Obermayer, Jami L; Riley, William T; Asif, Ofer; Jean-Mary, Jersino

    2004-01-01

    Although rates of smoking among college-aged students continue to rise, few interventions that focus on college smokers' unique motivations and episodic smoking patterns exist. The authors developed and evaluated a prototype program targeting college students that integrates Web and cell phone technologies to deliver a smoking-cessation intervention. To guide the user through the creation and initialization of an individualized quitting program delivered by means of cell phone text messaging, the program uses assessment tools delivered with the program Web site. Forty-six regular smokers were recruited from local colleges and provided access to the program. At 6-week follow-up, 43% had made at least one 24-hour attempt to quit, and 22% were quit--based on a 7-day prevalence criterion. The findings provide support for using wireless text messages to deliver potentially effective smoking-cessation behavioral interventions to college students.

  9. Mobile phone computing for in-situ cognitive behavioral therapy.

    PubMed

    Bang, Magnus; Timpka, Toomas; Eriksson, Henrik; Holm, Einar; Nordin, Conny

    2007-01-01

    Cognitive behavioral therapy (CBT) for psychological disorders is becoming increasingly popular on the Internet. However, when using this workstation approach, components such as training and learning relaxation skills, problem solving, exposure exercises, and sleep management guidance must be done in the domestic environment. This paper describes design concepts for providing spatially explicit CBT with mobile phones. We reviewed and analyzed a set of treatment manuals to distinguish elements of CBT that can be improved and supported using mobile phone applications. The key advantage of mobile computing support in CBT is that multimedia can be applied to record, scale, and label anxiety-provoking situations where the need arises, which helps the CBT clients formulate and convey their thoughts and feelings to relatives and friends, as well as to therapists at subsequent treatment sessions.

  10. A new method for mobile phone image denoising

    NASA Astrophysics Data System (ADS)

    Jin, Lianghai; Jin, Min; Li, Xiang; Xu, Xiangyang

    2015-12-01

    Images captured by mobile phone cameras via pipeline processing usually contain various kinds of noises, especially granular noise with different shapes and sizes in both luminance and chrominance channels. In chrominance channels, noise is closely related to image brightness. To improve image quality, this paper presents a new method to denoise such mobile phone images. The proposed scheme converts the noisy RGB image to luminance and chrominance images, which are then denoised by a common filtering framework. The common filtering framework processes a noisy pixel by first excluding the neighborhood pixels that significantly deviate from the (vector) median and then utilizing the other neighborhood pixels to restore the current pixel. In the framework, the strength of chrominance image denoising is controlled by image brightness. The experimental results show that the proposed method obviously outperforms some other representative denoising methods in terms of both objective measure and visual evaluation.

  11. NMR imaging of cell phone radiation absorption in brain tissue.

    PubMed

    Gultekin, David H; Moeller, Lothar

    2013-01-02

    A method is described for measuring absorbed electromagnetic energy radiated from cell phone antennae into ex vivo brain tissue. NMR images the 3D thermal dynamics inside ex vivo bovine brain tissue and equivalent gel under exposure to power and irradiation time-varying radio frequency (RF) fields. The absorbed RF energy in brain tissue converts into Joule heat and affects the nuclear magnetic shielding and the Larmor precession. The resultant temperature increase is measured by the resonance frequency shift of hydrogen protons in brain tissue. This proposed application of NMR thermometry offers sufficient spatial and temporal resolution to characterize the hot spots from absorbed cell phone radiation in aqueous media and biological tissues. Specific absorption rate measurements averaged over 1 mg and 10 s in the brain tissue cover the total absorption volume. Reference measurements with fiber optic temperature sensors confirm the accuracy of the NMR thermometry.

  12. Risk of brain tumors from wireless phone use.

    PubMed

    Dubey, Rash Bihari; Hanmandlu, Madasu; Gupta, Suresh Kumar

    2010-01-01

    The debate regarding the health effects of low-intensity electromagnetic radiation from sources such as power lines, base stations, and cell phones has recently been reignited. Wireless communication has dramatically influenced our lifestyle; its impact on human health has not been completely assessed. Widespread concern continues in the community about the deleterious effects of radiofrequency radiations on human tissues and the subsequent potential threat of carcinogenesis. Exposure to low-frequency electromagnetic field has been linked to a variety of adverse health outcomes. This article surveys the results of early cell phone studies, where exposure duration was too short to expect tumor genesis, and 2 sets of more recent studies with longer exposure duration: the Interphone studies and the Swedish studies led by Hardell.

  13. The Development of the Recovery Assessments by Phone Points (RAPP): A Mobile Phone App for Postoperative Recovery Monitoring and Assessment

    PubMed Central

    Dahlberg, Karuna; Eriksson, Mats; Grönlund, Åke; Nilsson, Ulrica

    2015-01-01

    Background In Sweden, day surgery is performed in almost 2 million patients per year. Patient satisfaction is closely related to potential adverse events during the recovery process. A way to empower patients and give them the opportunity to affect care delivery is to let them evaluate their recovery process. The most common evaluation method is a follow-up telephone call by a nurse one or two days after surgery. In recent years, mHealth apps have been used to evaluate the nurse-patient relationship for self-management in chronic diseases or to evaluate pain after surgery. To the best of our knowledge, no previous research has explored the recovery process after day surgery via mobile phone in a Swedish cohort. Objective The objective of the study is to describe the process of developing a mobile phone app using a Swedish Web-based Quality of Recovery (SwQoR) questionnaire to evaluate postoperative recovery after day surgery. Methods The development process included five steps: (1) setting up an interdisciplinary task force, (2) evaluating the potential needs of app users, (3) developing the Swedish Web version of a QoR questionnaire, (4) constructing a mobile phone app, and (5) evaluating the interface and design by staff working in a day-surgery department and patients undergoing day surgery. A task force including specialists in information and communication technology, eHealth, and nursing care worked closely together to develop a Web-based app. Modifications to the QoR questionnaire were inspired by instruments used in the field of recovery for both children and adults. The Web-based app, Recovery Assessment by Phone Points (RAPP) consists of two parts: (1) a mobile app installed on the patient’s private mobile phone, and (2) an administrator interface for the researchers. Results The final version of the SwQoR questionnaire, which includes 31 items, was successfully installed in RAPP. The interface and the design were evaluated by asking for user opinions

  14. Phone-sized whispering-gallery microresonator sensing system

    NASA Astrophysics Data System (ADS)

    Xu, Xiangyi; Jiang, Xuefeng; Zhao, Guangming; Yang, Lan

    2016-11-01

    We develop a compact whispering-gallery-mode (WGM) sensing system by integrating multiple components, including a tunable laser, a temperature controller, a function generator, an oscilloscope, a photodiode detector, and a testing computer, into a phone-sized embedded system. We demonstrate a thermal sensing experiment by using this portable system. Such a system successfully eliminates bulky measurement equipment required for characterizing optical resonators and will open up new avenues for practical sensing applications by using ultra-high Q WGM resonators.

  15. Image-Based Localization for Indoor Environment Using Mobile Phone

    NASA Astrophysics Data System (ADS)

    Huang, Y.; Wang, H.; Zhan, K.; Zhao, J.; Gui, P.; Feng, T.

    2015-05-01

    Real-time indoor localization based on supporting infrastructures like wireless devices and QR codes are usually costly and labor intensive to implement. In this study, we explored a cheap alternative approach based on images for indoor localization. A user can localize him/herself by just shooting a photo of the surrounding indoor environment using the mobile phone. No any other equipment is required. This is achieved by employing image-matching and searching techniques with a dataset of pre-captured indoor images. In the beginning, a database of structured images of the indoor environment is constructed by using image matching and the bundle adjustment algorithm. Then each image's relative pose (its position and orientation) is estimated and the semantic locations of images are tagged. A user's location can then be determined by comparing a photo taken by the mobile phone to the database. This is done by combining quick image searching, matching and the relative orientation. This study also try to explore image acquisition plans and the processing capacity of off-the-shell mobile phones. During the whole pipeline, a collection of indoor images with both rich and poor textures are examined. Several feature detectors are used and compared. Pre-processing of complex indoor photo is also implemented on the mobile phone. The preliminary experimental results prove the feasibility of this method. In the future, we are trying to raise the efficiency of matching between indoor images and explore the fast 4G wireless communication to ensure the speed and accuracy of the localization based on a client-server framework.

  16. Family Digital Literacy Practices and Children's Mobile Phone Use.

    PubMed

    Terras, Melody M; Ramsay, Judith

    2016-01-01

    Smart phones are ubiquitous in everyday life and are having a major impact on work, education, social relationships and modes of communication. Children are the fastest growing population of smart phone users, with use often focusing around internet access, e.g., 1 in 3 internet users in the UK are under 18 years of age. Despite their widespread use, relatively little is known about the factors that underpin children's use. The home is a significant ecological context of development and recent research has highlighted the importance of the home environment in promoting and supporting the development of both safe and unsafe online behavior. Yet the importance of these influences currently remains relatively unrecognized. Therefore, in this paper we present a narrative review of evidence examining parental practices concerning digital communication technologies and applications, with a particular focus on smartphones, and how they relate to the use of technology by their children. Emerging evidence to date indicates that two important factors are at play. Firstly, parental technology use is closely related to that of their child. Secondly, that despite parents frequently voiced concerns about the nature and extent of their child's mobile phone use, parents themselves often engage in a number of unsafe internet behaviors and excessive phone use in the home environment. Our review identifies two crucial lines of enquiry that have yet to be comprehensively pursued by researchers in the field: firstly, the adoption of a psychological perspective on children's emergent behaviors with mobile devices and secondly, the influential role of context. Given parental concerns about the possible negative impact of technologies, parental awareness should be raised about the influence of their behavior in the context of internet safety along with the adoption of good digital literacy practices. It is anticipated that a comprehensive characterization of the associated contextual

  17. Diagnostic Inaccuracy of Smart Phone Applications for Melanoma Detection

    PubMed Central

    Wolf, Joel; Moreau, Jacqui; Akilov, Oleg; Patton, Timothy; English, Joseph C; Ho, Jon; Ferris, Laura Korb

    2013-01-01

    Objective To measure the performance of smart phone applications which evaluate photographs of skin lesions and provide the user feedback as to their likelihood of malignancy. Design Case-control diagnostic accuracy study Setting Academic dermatology department Participants Digital clinical images of pigmented cutaneous lesions (60 melanoma cases and 128 benign lesion controls), all with histologic diagnosis rendered by a board-certified dermatopathologist, obtained prior to biopsy in patients undergoing lesion removal as part of routine care. Main Outcome Measures Sensitivity, specificity, and positive and negative predictive values of four smart phone applications designed to aid non-clinician users in determining if their skin lesion is benign or malignant. Results Sensitivity of the four tested applications ranged from 6.8% to 98.1%. Specificity ranged from 30.4% to 93.7%. Positive predictive value ranged from 33.3% to 42.1%, and negative predictive value ranged from 65.4% to 97.0%. The highest sensitivity for melanoma diagnosis was observed for an application that sends the image directly to a board-certified dermatologist for analysis and the lowest sensitivity was observed for applications that use automated algorithms to analyze images. Conclusions The performance of smart phone applications in assessing melanoma risk is highly variable, and 3 out of 4 smart phone applications incorrectly classified 30% or more of melanomas as unconcerning. Reliance on these applications, which are not subject to regulatory oversight, in lieu of medical consultation, has the potential to delay the diagnosis of melanoma and to harm users. PMID:23325302

  18. Enzymatic debridement after mobile phone explosion: a case report

    PubMed Central

    Cherubino, M.; Pellegatta, I.; Sallam, D.; Pulerà, E.; Valdatta, L.

    2016-01-01

    Summary It is estimated that over 90% of people own a mobile phone. Although rare, lithium-ion battery explosions can cause varying degrees of thermal burn injury. Recently, selective enzymatic debridement has gained importance in the management of burn patients, thanks to its simplicity, minimum invasiveness and safety. In this work, we describe a case of a burn injury caused by the explosion of a lithium-ion battery and treated with selective enzymatic debridement in a paediatric patient. PMID:28289361

  19. Remote assessment of stroke using the iPhone 4.

    PubMed

    Anderson, Eric R; Smith, Bryan; Ido, Moges; Frankel, Michael

    2013-05-01

    Therapy with recombinant tissue plasminogen activator is underused in the treatment of ischemic stroke in rural hospitals, due to a lack of local stroke expertise. Telemedicine solutions for stroke are a level I, class A recommendation when a vascular neurologist is absent. However, current solutions require exorbitant startup costs, which are prohibitive for the rural hospitals in which they are needed most. This study demonstrates the efficacy of using the relatively inexpensive iPhone 4 in telestroke management. Twenty patients with stroke were assessed at the bedside using an iPhone 4, and each examination was directed remotely on another iPhone 4. Both the physician performing the bedside exam and the remote physician calculated a National Institutes of Health Stroke Scale (NIHSS) score for each patient. Each physician was blinded to the other's NIHSS score. In the 20 patients assessed, NIHSS scores ranged from 0 to 22. Interrater reliability assessed using the κ statistic demonstrated excellent agreement in 10 items (level of consciousness, month and age, visual fields, right motor arm, left motor arm, right motor leg, left motor leg, sensation, language, and neglect), moderate agreement in 3 items (gaze, facial palsy, and dysarthria), and poor agreement in 1 item (ataxia). Total NIHSS scores obtained remotely and at bedside showed an excellent level of agreement (intraclass correlation coefficient, 0.98). Our findings indicate that the iPhone 4 is an economical mobile solution that can be used to assess stroke patients remotely with high fidelity and can be readily incorporated into a telestroke network.

  20. Hackers ring up big phone bills for hospitals.

    PubMed

    Gardner, E

    1992-11-02

    A big telephone bill--possibly in six figures--can be a painful way for a hospital to find out its phone system isn't secure. When unusually large long-distance bills start to show up, chances are a professional telephone hacker has broken in. According to experts, one in 15 businesses has been victimized by long-distance toll fraud, and loss estimates range from $900 million to $4 billion a year.

  1. Smart Phones: Platform Enabling Modular, Chemical, Biological, and Explosives Sensing

    DTIC Science & Technology

    2013-07-01

    solar - blind reagentless standoff chemical, biological, and explosives (CBE) sensor,” Proc. SPIE, 6954, 69540I/1-69540I/9 (2008). [4] K. J. Morey, M...automated field deployable biochemical detector has been designed and implemented using smart phone technology to augment this decision making process...The detection unit is a binary detector that indicates the presence or non-presence of the chemical target of interest. The operating procedure of

  2. Mobile Phone Use Behaviors and Postures on Public Transportation Systems

    PubMed Central

    Liang, Huey-Wen; Hwang, Yaw-Huei

    2016-01-01

    Mobile phones are common in our daily life, but the users’ preferences for postures or screen operating styles have not been studied. This was a cross-sectional and observational study. We randomly sampled passengers who used mobile phones on the Mass Rapid Transit (MRT) system in metropolitan Taipei. A checklist was used to observe their body postures and screen operating styles while sitting or standing. As a result, 1,230 subjects from 400 trips were observed. Overall, of all the passengers who were sitting, 41% of them were using mobile phones. The majority of the tasks involved browsing (84%) with their phones in a portrait orientation (93%). Different-hand holding/operating was the most commonly used operating style while sitting (46%) and same-hand holding/operating was the most common while standing (46%). The distribution of screen operating styles was significantly different for those sitting than for those standing and for different genders and age groups. The most frequently observed postures while sitting were having one’s trunk against a backrest, feet on the floor and with or without an arm supported (58%). As for the users who were standing, the both- and different-hands groups had a high proportion of arms unsupported, feet on the floor and either their trunk supported or not. In contrast, the same-hand group tended to have their trunk unsupported, were holding a pole or handstrap and had both feet on floor. Further studies are warranted to characterize the ergonomic exposure of these commonly used postures and operating styles, and our results will help guide the selection of experimental conditions for laboratory settings. PMID:26828797

  3. Supreme Court Term Review: Cell Phones, Protests, and Prayer

    ERIC Educational Resources Information Center

    Cohen, Mark

    2014-01-01

    If there is one thing that teenagers like to talk about when it comes to the law, it's who does and does not have the right to search their "stuff." And in the world of "stuff," there is nothing more important to average American teenagers than their cell phones. So when, in the waning days of its 2013-2014 term, the U.S.…

  4. Cellular Phones Helping to Get a Clearer Picture of Kinematics

    ERIC Educational Resources Information Center

    Falcao, A. E. G., Jr.; Gomes, R. A.; Pereira, J. M.; Coelho, L. F. S.; Santos, A. C. F.

    2009-01-01

    The main purpose of this paper is to add to the list of examples of how cell phones may be used as teaching tools in the classroom. One very interesting example of this comes from the study of projectile motion, the classical "cannon ball" problem. This problem is central to the study of kinematics, the very first topic a student meets in physics.…

  5. Mobile phones and sex work in South India: the emerging role of mobile phones in condom use by female sex workers in two Indian states.

    PubMed

    Navani-Vazirani, Sonia; Solomon, Davidson; Gopalakrishnan; Heylen, Elsa; Srikrishnan, Aylur Kailasom; Vasudevan, Canjeevaram K; Ekstrand, Maria L

    2015-01-01

    The aim of this study was to examine female sex workers' solicitation of clients using mobile phones and the association between this and condom use with clients. Cross-sectional data were utilised to address the study's aim, drawing on data collected from female sex workers in Calicut, Kerala, and Chirala, Andhra Pradesh. Use of mobile phone solicitation was reported by 46.3% (n = 255) of Kerala participants and 78.7% (n = 464) of those in Andhra Pradesh. Kerala participants reporting exclusive solicitation using mobile phones demonstrated 1.67 times higher odds (95% CI: 1.01-2.79) of inconsistent condom use than those reporting non-use of mobile phones for solicitation. However, those reporting exclusive solicitation through mobile phones in Andhra Pradesh reported lower odds of inconsistent condom use (OR: 0.03; 95% CI: 0.01-0.26) than those not using mobile phones for solicitation. Findings indicate that solicitation of clients using mobile phones facilitates or hampers consistency in condom use with clients depending on the context, and how mobile phones are incorporated into solicitation practices. Variations in sex work environments, including economic dependence on sex work or lack thereof may partially account for the different effects found.

  6. "I Wanna Go in the Phone": Literacy Acquisition, Informal Learning Processes, "Voice" and Mobile Phone Appropriation in a South African Township

    ERIC Educational Resources Information Center

    Velghe, Fie

    2014-01-01

    The uptake of mobile phones has been especially remarkable in the developing world. For the first time in history, people at the bottom of the income pyramid can also take part in the telecommunication society. Mobile phones can play a unique role in reaching those who are outside the scope of formal or institutionalised schooling and open doors…

  7. Mobile phones and sex work in South India: The emerging role of mobile phones in condom use by female sex workers in two Indian states

    PubMed Central

    Navani-Vazirani, S; Solomon, D; Krishnan, G; Heylen, E; Srikrishnan, AK; Vasudevan, CK; Ekstrand, ML

    2014-01-01

    The aim of this study was to examine female sex workers’ solicitation of clients using mobile phones and the association between this and condom use with clients. Cross-sectional data were utilised to address the study's aim, drawing on data collected from female sex workers in Calicut, Kerala and Chirala, Andhra Pradesh. Use of mobile phone solicitation was reported by 46.3% (n = 255) of Kerala participants and 78.7% (n = 464) of those in Andhra Pradesh. Kerala participants reporting exclusive solicitation using mobile phones demonstrated 1.67 times higher odds (95% CI: 1.01–2.79) of inconsistent condom use than those reporting non-use of mobile phones for solicitation. However, those reporting exclusive solicitation through mobile phones in Andhra Pradesh reported lower odds of inconsistent condom use (OR: 0.03; 95% CI: 0.01–0.26) than those not using mobile phones for solicitation. Findings indicate that solicitation of clients using mobile phones facilitates or hampers consistency in condom use with clients depending on the context, and how mobile phones are incorporated into solicitation practices. Variations in sex work environments, including economic dependence on sex work or lack thereof may partially account for the different effects found. PMID:25301669

  8. Real Time Recognition of Heart Attack in a Smart Phone

    PubMed Central

    Rad, Mahshid Zomorodi; Ghuchani, Saeed Rahati; Bahaadinbeigy, Kambiz; Khalilzadeh, Mohammad Mahdi

    2015-01-01

    Background: In many countries, including our own, cardiovascular disease is the most common cause of mortality and morbidity. Myocardial infarction (heart attack) is of particular importance in heart disease as well as time and type of reaction to acute myocardial infarction and these can be a determining factor in patients’ outcome. Methods: In order to reduce physician attendance time and keep patients informed about their condition, the smart phone as a common communication device has been used to process data and determine patients’ ECG signals. For ECG signal analysis, we used time domain methods for extracting the ST-segment as the most important feature of the signal to detect myocardial infarction and the thresholding methods and linear classifiers by LabVIEW Mobile Module were used to determine signal risk. Results: The sensitivity and specificity as criteria to evaluate the algorithm were 98% and 93.3% respectively in real time. Conclusions: This algorithm, because of the low computational load and high speed, makes it possible to run in a smart phone. Using Bluetooth to send the data from a portable monitoring system to a smart phone facilitates the real time applications. By using this program on the patient’s mobile, timely detection of infarction so to inform patients is possible and mobile services such as SMS and calling for a physician’s consultation can be done. PMID:26236081

  9. A survey of online activity recognition using mobile phones.

    PubMed

    Shoaib, Muhammad; Bosch, Stephan; Incel, Ozlem Durmaz; Scholten, Hans; Havinga, Paul J M

    2015-01-19

    Physical activity recognition using embedded sensors has enabled many context-aware applications in different areas, such as healthcare. Initially, one or more dedicated wearable sensors were used for such applications. However, recently, many researchers started using mobile phones for this purpose, since these ubiquitous devices are equipped with various sensors, ranging from accelerometers to magnetic field sensors. In most of the current studies, sensor data collected for activity recognition are analyzed offline using machine learning tools. However, there is now a trend towards implementing activity recognition systems on these devices in an online manner, since modern mobile phones have become more powerful in terms of available resources, such as CPU, memory and battery. The research on offline activity recognition has been reviewed in several earlier studies in detail. However, work done on online activity recognition is still in its infancy and is yet to be reviewed. In this paper, we review the studies done so far that implement activity recognition systems on mobile phones and use only their on-board sensors. We discuss various aspects of these studies. Moreover, we discuss their limitations and present various recommendations for future research.

  10. The benefit of smart phone usage in liver organ procurement.

    PubMed

    Croome, Kris P; Shum, Jeff; Al-Basheer, Mamoun A; Kamei, Hideya; Bloch, Michael; Quan, Douglas; Hernandez-Alejandro, Roberto

    2011-01-01

    A 56-year-old man was on the transplant list with end-stage liver disease secondary to hepatitis C when a donor liver became available at a location 545 km away. The procurement team, consisting of a senior and junior fellow, went on the retrieval, while the staff surgeon remained in the hospital with the recipient. At the time of organ procurement, a suspicious lesion was identified in the left lateral lobe. The transplant fellows took intraoperative pictures of the lesion with a smart phone and sent them to the staff surgeon for advice. A teleconsultation, facilitated by images sent from the smart phone, took place over the next 22 min. The decision was made to proceed with the transplant, as it was felt that the lesion could be resected from the liver allograft. Had the fellows not been able to interact with the staff surgeon in real-time during the surgery, there is a high likelihood that the organ would have been rejected by the staff surgeon due to the unexpected finding. The patient's postoperative course was relatively uneventful with no evidence of infection. The patient was discharged from hospital and continues to do well. We expect that the role of smart phones in remote consultation will continue to expand in future.

  11. From human behavior to the spread of mobile phone viruses

    NASA Astrophysics Data System (ADS)

    Wang, Pu

    Percolation theory was initiated some 50 years ago as a mathematical framework for the study of random physical processes such as the flow of a fluid through a disordered porous medium. It has been proved to be a remarkably rich theory, with applications from thermodynamic phase transitions to complex networks. In this dissertation percolation theory is used to study the diffusion process of mobile phone viruses. Some methodologies widely used in statistical physics are also applied to uncover the underlying statistical laws of human behavior and simulate the spread of mobile phone viruses in a large population. I find that while Bluetooth viruses can reach all susceptible handsets with time, they spread slowly due to human mobility, offering ample opportunities to deploy antiviral software. In contrast, viruses utilizing multimedia messaging services (MMS) could infect all users in hours, but currently a phase transition on the underlying call graph limits them to only a small fraction of the susceptible users. These results explain the lack of a major mobile virus breakout so far and predict that once a mobile operating system's market share reaches the phase transition point, viruses will pose a serious threat to mobile communications. These studies show how the large datasets and tools of statistical physics can be used to study some specific and important problems, such as the spread of mobile phone viruses.

  12. Applying image quality in cell phone cameras: lens distortion

    NASA Astrophysics Data System (ADS)

    Baxter, Donald; Goma, Sergio R.; Aleksic, Milivoje

    2009-01-01

    This paper describes the framework used in one of the pilot studies run under the I3A CPIQ initiative to quantify overall image quality in cell-phone cameras. The framework is based on a multivariate formalism which tries to predict overall image quality from individual image quality attributes and was validated in a CPIQ pilot program. The pilot study focuses on image quality distortions introduced in the optical path of a cell-phone camera, which may or may not be corrected in the image processing path. The assumption is that the captured image used is JPEG compressed and the cellphone camera is set to 'auto' mode. As the used framework requires that the individual attributes to be relatively perceptually orthogonal, in the pilot study, the attributes used are lens geometric distortion (LGD) and lateral chromatic aberrations (LCA). The goal of this paper is to present the framework of this pilot project starting with the definition of the individual attributes, up to their quantification in JNDs of quality, a requirement of the multivariate formalism, therefore both objective and subjective evaluations were used. A major distinction in the objective part from the 'DSC imaging world' is that the LCA/LGD distortions found in cell-phone cameras, rarely exhibit radial behavior, therefore a radial mapping/modeling cannot be used in this case.

  13. Evaluation of Mobile Phone Interference With Aircraft GPS Navigation Systems

    NASA Technical Reports Server (NTRS)

    Pace, Scott; Oria, A. J.; Guckian, Paul; Nguyen, Truong X.

    2004-01-01

    This report compiles and analyzes tests that were conducted to measure cell phone spurious emissions in the Global Positioning System (GPS) radio frequency band that could affect the navigation system of an aircraft. The cell phone in question had, as reported to the FAA (Federal Aviation Administration), caused interference to several GPS receivers on-board a small single engine aircraft despite being compliant with data filed at the time with the FCC by the manufacturer. NASA (National Aeronautics and Space Administration) and industry tests show that while there is an emission in the 1575 MHz GPS band due to a specific combination of amplifier output impedance and load impedance that induces instability in the power amplifier, these spurious emissions (i.e., not the intentional transmit signal) are similar to those measured on non-intentionally transmitting devices such as, for example, laptop computers. Additional testing on a wide sample of different commercial cell phones did not result in any emission in the 1575 MHz GPS Band above the noise floor of the measurement receiver.

  14. Development of protected endorsement for online banking using mobile phones

    NASA Astrophysics Data System (ADS)

    Narayana, Galla; Venkateswarlu, Tammineni; Kumar, G. S. P.; Padmavathamma, Mokkala; Sreekanth, G.; Delhibabu, K.; Prasad, A. R.

    2013-03-01

    Securing Online Banking transactions for customer is the primary goal of financial institutions that provides Internet banking facility. Mobile phones play an important role in our society as more and more functions having been integrated within mobile phones, such as Internet browsing, mobile banking, and shopping. Mobiles phones can be used to secure ATM card pins by sending to the customer directly rather than in emails or by other means which has a possibility of hacking. In this paper we have proposed method of generating a Private Key Security Token by bank authentication servers which uses IMSI registers and IMEI number of client's mobile registered. The key is generated by implementing RIPE MD160 and Hex Encode Algorithm. Token received is valid only for that client mobile only and can be generated upon request by customer dynamically. The client is given a PIN and a Master Key when registered to the Online Banking Services. If in case a client's mobile is lost, authentication is done using Unique Master Key, else the Private Key Token is used there by making transactions secured and simple without the need of carrying any USB Tokens. The additional functionality provides the client more security on their transactions. Due to this Phishing attacks by the hackers is avoided.

  15. Teaching the Fundamentals of Cell Phones and Wireless Communications

    NASA Astrophysics Data System (ADS)

    Davids, Mark; Forrest, Rick; Pata, Don

    2010-04-01

    Wireless communications are ubiquitous. Students and teachers use iPhones®, BlackBerrys®, and other smart phones at home and at work. More than 275 million Americans had cell phones in June of 2009 and expanded access to broadband is predicted this year.2 Despite the plethora of users, most students and teachers do not understand "how they work." Over the past several years, three high school teachers have collaborated with engineers at Cingular, Motorola, and the University of Michigan to explore the underlying science and design a three-week, student-centered unit with a constructivist pedagogy consistent with the "Modeling in Physics" philosophy.3 This unique pilot program reinforces traditional physics topics including vibrations and waves, sound, light, electricity and magnetism, and also introduces key concepts in communications and information theory. This article will describe the motivation for our work, outline a few key concepts with the corresponding student activities, and provide a summary of the program that has been developed to engage and inspire the next generation of scientists, engineers, and citizens.

  16. Mobile phone waste management and recycling: Views and trends.

    PubMed

    Sarath, P; Bonda, Sateesh; Mohanty, Smita; Nayak, Sanjay K

    2015-12-01

    There is an enormous growth in mobile phone consumption worldwide which leads to generation of a large volume of mobile phone waste every year. The aim of this review is to give an insight on the articles on mobile phone waste management and recycling, published in scientific journals, major proceedings and books from 1999 to 2015. The major areas of research have been identified and discussed based on available literature in each research topic. It was observed that most of these articles were published during the recent years, with the number of articles increasing yearly. Material recovery and review on management options of waste are found to be the leading topics in this area. Researchers have proved that economically viable refurbishing or recycling of such waste is possible in an environmentally friendly manner. However, the literatures indicate that without proper consumer awareness, a recycling system cannot perform to its maximum efficiency. The methodologies followed and analytical techniques employed by the researchers to attain their objectives have been discussed. The graphical representations of available literature on current topic with respect to year of publication, topics and location have also been explored.

  17. Smart-Phone Based Magnetic Levitation for Measuring Densities.

    PubMed

    Knowlton, Stephanie; Yu, Chu Hsiang; Jain, Nupur; Ghiran, Ionita Calin; Tasoglu, Savas

    2015-01-01

    Magnetic levitation, which uses a magnetic field to suspend objects in a fluid, is a powerful and versatile technology. We develop a compact magnetic levitation platform compatible with a smart-phone to separate micro-objects and estimate the density of the sample based on its levitation height. A 3D printed attachment is mechanically installed over the existing camera unit of a smart-phone. Micro-objects, which may be either spherical or irregular in shape, are suspended in a paramagnetic medium and loaded in a microcapillary tube which is then inserted between two permanent magnets. The micro-objects are levitated and confined in the microcapillary at an equilibrium height dependent on their volumetric mass densities (causing a buoyancy force toward the edge of the microcapillary) and magnetic susceptibilities (causing a magnetic force toward the center of the microcapillary) relative to the suspending medium. The smart-phone camera captures magnified images of the levitating micro-objects through an additional lens positioned between the sample and the camera lens cover. A custom-developed Android application then analyzes these images to determine the levitation height and estimate the density. Using this platform, we were able to separate microspheres with varying densities and calibrate their levitation heights to known densities to develop a technique for precise and accurate density estimation. We have also characterized the magnetic field, the optical imaging capabilities, and the thermal state over time of this platform.

  18. Smart-Phone Based Magnetic Levitation for Measuring Densities

    PubMed Central

    Knowlton, Stephanie; Yu, Chu Hsiang; Jain, Nupur

    2015-01-01

    Magnetic levitation, which uses a magnetic field to suspend objects in a fluid, is a powerful and versatile technology. We develop a compact magnetic levitation platform compatible with a smart-phone to separate micro-objects and estimate the density of the sample based on its levitation height. A 3D printed attachment is mechanically installed over the existing camera unit of a smart-phone. Micro-objects, which may be either spherical or irregular in shape, are suspended in a paramagnetic medium and loaded in a microcapillary tube which is then inserted between two permanent magnets. The micro-objects are levitated and confined in the microcapillary at an equilibrium height dependent on their volumetric mass densities (causing a buoyancy force toward the edge of the microcapillary) and magnetic susceptibilities (causing a magnetic force toward the center of the microcapillary) relative to the suspending medium. The smart-phone camera captures magnified images of the levitating micro-objects through an additional lens positioned between the sample and the camera lens cover. A custom-developed Android application then analyzes these images to determine the levitation height and estimate the density. Using this platform, we were able to separate microspheres with varying densities and calibrate their levitation heights to known densities to develop a technique for precise and accurate density estimation. We have also characterized the magnetic field, the optical imaging capabilities, and the thermal state over time of this platform. PMID:26308615

  19. Recall of past use of mobile phone handsets.

    PubMed

    Parslow, R C; Hepworth, S J; McKinney, P A

    2003-01-01

    Previous studies investigating health effects of mobile phones have based their estimation of exposure on self-reported levels of phone use. This UK validation study assesses the accuracy of reported voice calls made from mobile handsets. Data collected by postal questionnaire from 93 volunteers was compared to records obtained prospectively over 6 months from four network operators. Agreement was measured for outgoing calls using the kappa statistic, log-linear modelling, Spearman correlation coefficient and graphical methods. Agreement for number of calls gained moderate classification (kappa = 0.39) with better agreement for duration (kappa = 0.50). Log-linear modelling produced similar results. The Spearman correlation coefficient was 0.48 for number of calls and 0.60 for duration. Graphical agreement methods demonstrated patterns of over-reporting call numbers (by a factor of 1.7) and duration (by a factor of 2.8). These results suggest that self-reported mobile phone use may not fully represent patterns of actual use. This has implications for calculating exposures from questionnaire data.

  20. [Motivation and significance of IARC classification for mobile phone].

    PubMed

    L'Abbate, N

    2011-01-01

    In May 2011, the IARC Working Group discussed the possibility that exposure to RF-EMF (radiofrequency electromagnetic fields) have to produce an increased risk for brain tumors and evaluated the available literature on different categories of subjects exposed, including, among others, a Danish cohort study, five case-control studies and the largest multi-center case-control study (INTERPHONE) on the use of mobile phone and brain tumors, including glioma, meningioma and acoustic neuroma. The Working Group also examined a number of studies with objectives related to various mechanisms ofcarcerogenesis. The findings have been reviewed critically and generally assessed as "limited" among users of wireless phones for glioma and acoustic neuroma and "inappropriate" to draw conclusions for other types of tumors. The evidence from occupational and environmental exposures were considered "insufficient" in the same way. Given the limited evidence in humans and in experimental animals, the Working Group has classified a large majority the RF-EMF fields as "possibly carcinogenic to humans" (Group 2B). The Director of IARC has recommended, however,further research in the long-term use of mobile phones and adoption of pragmatic steps to reduce exposure, such as hands-free devices or sms.

  1. Automatic Cell Phone Menu Customization Based on User Operation History

    NASA Astrophysics Data System (ADS)

    Fukazawa, Yusuke; Hara, Mirai; Ueno, Hidetoshi

    Mobile devices are becoming more and more difficult to use due to the sheer number of functions now supported. In this paper, we propose a menu customization system that ranks functions so as to make interesting functions including both frequently used and functions that are infrequently used but have the potential to satisfy the user, easy to access. Concretely, we define the features of the phone's functions by extracting keywords from the manufacturer's manual, and propose a method that uses the Ranking SVM (Support Vector Machine) to rank the functions based on user's operation history. We conduct a home-use test for one week to evaluate the efficiency of customization and the usability of menu customization. The results of this test show that the average rank at the last day was half that of the first day, and that the user could find, on average, 3.14 more kinds of new functions, ones that the user did not know about before the test, on a daily basis. This shows that the proposed customized menu supports the user by making it easier to access frequent items and to find new interesting functions. From interviews, almost 70% of the users were satisfied with the ranking provided by menu customization as well as the usability of the resulting menus. In addition, interviews show that automatic cell phone menu customization is more appropriate for mobile phone beginners than expert users.

  2. Online camera-gyroscope autocalibration for cell phones.

    PubMed

    Jia, Chao; Evans, Brian L

    2014-12-01

    The gyroscope is playing a key role in helping estimate 3D camera rotation for various vision applications on cell phones, including video stabilization and feature tracking. Successful fusion of gyroscope and camera data requires that the camera, gyroscope, and their relative pose to be calibrated. In addition, the timestamps of gyroscope readings and video frames are usually not well synchronized. Previous paper performed camera-gyroscope calibration and synchronization offline after the entire video sequence has been captured with restrictions on the camera motion, which is unnecessarily restrictive for everyday users to run apps that directly use the gyroscope. In this paper, we propose an online method that estimates all the necessary parameters, whereas a user is capturing video. Our contributions are: 1) simultaneous online camera self-calibration and camera-gyroscope calibration based on an implicit extended Kalman filter and 2) generalization of the multiple-view coplanarity constraint on camera rotation in a rolling shutter camera model for cell phones. The proposed method is able to estimate the needed calibration and synchronization parameters online with all kinds of camera motion and can be embedded in gyro-aided applications, such as video stabilization and feature tracking. Both Monte Carlo simulation and cell phone experiments show that the proposed online calibration and synchronization method converge fast to the ground truth values.

  3. Estimation of retired mobile phones generation in China: A comparative study on methodology.

    PubMed

    Li, Bo; Yang, Jianxin; Lu, Bin; Song, Xiaolong

    2015-01-01

    Due to the rapid development of economy and technology, China has the biggest production and possession of mobile phones around the world. In general, mobile phones have relatively short life time because the majority of users replace their mobile phones frequently. Retired mobile phones represent the most valuable electrical and electronic equipment (EEE) in the main waste stream because of such characteristics as large quantity, high reuse/recovery value and fast replacement frequency. Consequently, the huge amount of retired mobile phones in China calls for a sustainable management system. The generation estimation can provide fundamental information to construct the sustainable management system of retired mobile phones and other waste electrical and electronic equipment (WEEE). However, the reliable estimation result is difficult to get and verify. The priority aim of this paper is to provide proper estimation approach for the generation of retired mobile phones in China, by comparing some relevant methods. The results show that the sales&new method is in the highest priority in estimation of the retired mobile phones. The result of sales&new method shows that there are 47.92 million mobile phones retired in 2002, and it reached to 739.98 million in China in 2012. It presents an increasing tendency with some fluctuations clearly. Furthermore, some discussions on methodology, such as the selection of improper approach and error in the input data, are also conducted in order to improve generation estimation of retired mobile phones and other WEEE.

  4. [In vitro and in vivo study of electromagnetic compatibility of cellular phones and pacemakers].

    PubMed

    Gellér, L; Thuróczy, G; Merkely, B

    2001-09-09

    Electromagnetic compatibility (EMC) of cellular phones and pacemakers (PM) was examined in four different cellular phone system (NMT, GSM, RLL, DCS 1800 MHz) and in fifteen different PM type in-vitro and in-vivo in humans. After more than 1100 in-vitro and 130 in-vivo tests we concluded, that the electromagnetic immunity of the PMs which are implanted in Hungary is suitable with only few exceptions. The highest rate of EMC problems was observed with NMT 450 MHz cellular phones (10.5%-63%). There was no EMC disturbance observed with GSM and DCS 1800 MHz cellular phones. There was only one case when clinically significant symptom was noticed with only one PM type and with NMT system cellular phone when the distance of cellular phone was 3-4 cms, and the power was maximal. There was not any EMC disturbance observed with none of the cellular phone systems during normal talking and when the distance of the PM and cellular phone was more than 20 cms. Our study supports guidelines which suggest that PM patients should contact their physicians when using cellular phones and cellular phones and PMs should not get closer than 20 cms.

  5. The importance of mobile phones in the possible transmission of bacterial infections in the community.

    PubMed

    Bhoonderowa, A; Gookool, S; Biranjia-Hurdoyal, S D

    2014-10-01

    Mobile phones have become indispensable accessories in today's life. However, they might act as fomites as they have travelled with their owner to places such as toilets, hospitals and kitchens which are loaded with microorganisms. A cross-sectional study was carried out to isolate and identify bacteria from mobile phones of volunteers in the community. A total of 192 mobile phones from 102 males and 90 females were swabbed and cultured. The bacteria were identified by gram staining and conventional biochemical tests. A total of 176 mobile phones (91.7 %) showed bacterial contamination. Coagulase negative Staphylococcus was the most prevalent (69.3 %) followed by Micrococci (51.8 %), Klebsiella (1.5 %) and Pseudomonas (1 %). The mean colony forming units was higher among females than males (p < 0.05; 95 % CI 0.021-0.365) and higher on mobile phones which were kept in bags than in pockets (p < 0.05; 95 % CI 0.019-0.369). Furthermore, the use of phone cover was found to reduce microbial growth (OR 4.2; 95 % CI 1.423-12.39; p < 0.05). Significant associations were also found between bacterial growth and female participants, agricultural workers, mobile phones older than 6 months and sharing of mobile phones (p < 0.05). Mobile phones from the community carry potential pathogens. Cleaning of mobile phones should be encouraged and should be preferably stored in pockets or carry cases.

  6. Mobile Phone Assessment in Egocentric Networks: A Pilot Study on Gay Men and Their Peers.

    PubMed

    Comulada, W Scott

    2014-12-01

    Mobile phone-based data collection encompasses the richness of social network research. Both individual-level and network-level measures can be recorded. For example, health-related behaviors can be reported via mobile assessment. Social interactions can be assessed by phone-log data. Yet the potential of mobile phone data collection has largely been untapped. This is especially true of egocentric studies in public health settings where mobile phones can enhance both data collection and intervention delivery, e.g. mobile users can video chat with counselors. This is due in part to privacy issues and other barriers that are more difficult to address outside of academic settings where most mobile research to date has taken place. In this article, we aim to inform a broader discussion on mobile research. In particular, benefits and challenges to mobile phone-based data collection are highlighted through our mobile phone-based pilot study that was conducted on egocentric networks of 12 gay men (n = 44 total participants). HIV-transmission and general health behaviors were reported through a mobile phone-based daily assessment that was administered through study participants' own mobile phones. Phone log information was collected from gay men with Android phones. Benefits and challenges to mobile implementation are discussed, along with the application of multi-level models to the type of longitudinal egocentric data that we collected.

  7. Mobile phone use while cycling: incidence and effects on behaviour and safety.

    PubMed

    de Waard, Dick; Schepers, Paul; Ormel, Wieke; Brookhuis, Karel

    2010-01-01

    The effects of mobile phone use on cycling behaviour were studied. In study 1, the prevalence of mobile phone use while cycling was assessed. In Groningen 2.2% of cyclists were observed talking on their phone and 0.6% were text messaging or entering a phone number. In study 2, accident-involved cyclists responded to a questionnaire. Only 0.5% stated that they were using their phone at the time of the accident. In study 3, participants used a phone while cycling. The content of the conversation was manipulated and participants also had to enter a text message. Data were compared with just cycling and cycling while listening to music. Telephoning coincided with reduced speed, reduced peripheral vision performance and increased risk and mental effort ratings. Text messaging had the largest negative impact on cycling performance. Higher mental workload and lower speed may account for the relatively low number of people calling involved in accidents. STATEMENT OF RELEVANCE: Although perhaps mainly restricted to flat countries with a large proportion of cyclists, mobile phone use while cycling has increased and may be a threat to traffic safety, similar to phone use while driving a car. In this study, the extent of the problem was assessed by observing the proportion of cyclists using mobile phones, sending questionnaires to accident-involved cyclists and an experimental study was conducted on the effects of mobile phone use while cycling.

  8. Nomophobia: A Cross-sectional Study to Assess Mobile Phone Usage Among Dental Students

    PubMed Central

    Patthi, Basavaraj; Singla, Ashish; Gupta, Ritu; Saha, Sabyasachi; Kumar, Jishnu Krishna; Malhi, Ravneet; Pandita, Venisha

    2017-01-01

    Introduction Mobile phones were originally seen as a gadget for communication but currently, the internet enabled mobile phones have become an integral part of our daily life. Their benefits are incomparable but at the same time, they have some negative effects too. Aim To assess the pattern of usage of mobile phones and its effects on the academic performance of students. Materials and Methods A descriptive cross-sectional study was conducted amongst 554 students of D. J. College of Dental Sciences and Research through a self-administered questionnaire to collect the data regarding the usage and associated anxiety with mobile phone. Results About 39.5% students agreed that they score low marks in professional exams if they spend more time on phone. The number of students who frequently checked their cell phone during their classes or while doing clinical work were 24.7% . A total of 24.12% of the students were found to be nomophobic and at risk of being nomophobes were 40.97%. A statistically significant difference was found among preclinical, clinical, interns and postgraduates regarding the usage and effect of mobile phone on them. Conclusion The pattern of usage of mobile phone among dental students showed alarming indication that students have been addicted to mobile phone which in turn affect their academic performance in a negative way. It would be useful to advise the students about the controlled as well as proper usage of mobile phone. PMID:28384977

  9. Effect of North Carolina's restriction on teenage driver cell phone use two years after implementation.

    PubMed

    Goodwin, Arthur H; O'Brien, Natalie P; Foss, Robert D

    2012-09-01

    A majority of states now restrict teenagers from using a mobile communication device while driving. The effect of these restrictions is largely unknown. In a previous study, we found North Carolina's teenage driver cell phone restriction had little influence on young driver behavior four months after the law took effect (Foss et al., 2009). The goal of the present study was to examine the longer-term effect of North Carolina's cell phone restriction. It was expected that compliance with the restriction would increase, as awareness of the restriction grew over time. Teenagers were observed at high schools in North Carolina approximately two years after the law was implemented. Observations were also conducted in South Carolina, which did not have a cell phone restriction. In both states, there was a broad decrease in cell phone use. A logistic regression analysis showed the decrease in cell phone use did not significantly differ between the two states. Although hand-held cell phone use decreased, there was an increase in the likelihood that drivers in North Carolina were observed physically manipulating a phone. Finally, a mail survey of teenagers in North Carolina showed awareness for the cell phone restriction now stands at 78% among licensed teens. Overall, the findings suggest North Carolina's cell phone restriction has had no long-term effect on the behavior of teenage drivers. Moreover, it appears many teenage drivers may be shifting from talking on a phone to texting.

  10. A preliminary investigation into the prevalence and prediction of problematic cell phone use

    PubMed Central

    Smetaniuk, Peter

    2014-01-01

    Background and aims: Likening mobile phone use dependency to the classification of excessive behaviors may be necessarily equivalent in seriousness to previously established addictions such as problematic computing or excessive gambling. The aim of the study explores into the behavior of excessive use of mobile phones as a pathological behavior. Methods: Two studies investigated criteria for problematic mobile phone usage by examining student (Study 1, N = 301) and nonstudent (Study 2, N = 362) responses to a set of adapted mobile phone addiction inventories. Study 1 investigated cell phone addiction inventories as constructs designed to measure problematic cell phone use. Additionally, Study 2 sought to predict age, depression, extraversion, emotional stability, impulse control, and self-esteem as independent variables that augment respondents’ perceptions of problematic use. Results: The results from Study 1 and Study 2 indicate that 10 to 25% of the participants tested exhibited problematic cell phone usage. Additionally, age, depression, extraversion, and low impulse control are the most suitable predictors for problematic use. Conclusions: The results of the two studies indicate that problematic mobile phone use does occur and ought to be taken seriously by the psychological community. Presently, there is limited data providing conclusive evidence for a comprehensible categorization of cell phone addiction, as well as a unified explanatory model specific to problematic mobile phone use. Studies such as this one may contribute substantial findings, adding scientific significance, and offering a valuable submission for the ongoing progress of creating intervention frameworks relative to “virtual addictions”. PMID:25215213

  11. The Use of Mobile Phone and Medical Apps among General Practitioners in Hangzhou City, Eastern China

    PubMed Central

    Liu, Ying; Ren, Wen; Qiu, Yan; Liu, Juanjuan; Yin, Pei

    2016-01-01

    Background Mobile phones and mobile phone apps have expanded new forms of health professionals’ work. There are many studies on the use of mobile phone apps for different specialists. However, there are no studies on the current use of mobile phone apps among general practitioners (GPs). Objective The objective of the study was to investigate the extent to which GPs own smartphones with apps and use them to aid their clinical activities. Methods A questionnaire survey of GPs was undertaken in Hangzhou, Eastern China. Data probing GPs’ current use of medical apps in their clinical activities and factors influencing app use were collected and analyzed Results 125 GPs participated in the survey. 90.4% of GPs owned a mobile phone, with 48.7% owning an iPhone and 47.8% owning an Android phone. Most mobile phone owners had 1-3 medical-related apps, with very few owning more than 4. There was no difference in number of apps between iPhone and Android owners (χ2=1.388, P=0.846). 36% of GPs reported using medical-related apps on a daily basis. The majority of doctors reported using apps to aid clinical activities less than 30 minutes per day. Conclusions A high level of mobile phone ownership and usage among GPs was found in this study, but few people chose medical-related apps to support their clinical practice. PMID:27220417

  12. Improving public health surveillance using a dual-frame survey of landline and cell phone numbers.

    PubMed

    Hu, S Sean; Balluz, Lina; Battaglia, Michael P; Frankel, Martin R

    2011-03-15

    To meet challenges arising from increasing rates of noncoverage in US landline-based telephone samples due to cell-phone-only households, the Behavioral Risk Factor Surveillance System (BRFSS) expanded a traditional landline-based random digit dialing survey to a dual-frame survey of landline and cell phone numbers. In 2008, a survey of adults with cell phones only was conducted in parallel with an ongoing landline-based health survey in 18 states. The authors used the optimal approach to allocate samples into landline and cell-phone-only strata and used a new approach to weighting state-level landline and cell phone samples. They developed logistic models for each of 16 health indicators to examine whether exclusion of adults with cell phones only affected estimates after adjustment for demographic characteristics. The extents of the potential biases in landline telephone surveys that exclude cell phones were estimated. Biases resulting from exclusion of adults with cell phones only from the landline-based survey were found for 9 out of the 16 health indicators. Because landline noncoverage rates for adults with cell phones only continue to increase, these biases are likely to increase. Use of a dual-frame survey of landline and cell phone numbers assisted the BRFSS efforts in obtaining valid, reliable, and representative data.

  13. Epidemiological Characteristics of Mobile Phone Ownership and Use in Korean Children and Adolescents

    PubMed Central

    Byun, Yoon-Hwan; Kwon, Ho-Jang; Choi, Kyung-Hwa; Burm, Eunae; Choi, Yeyong; Lim, Myung-Ho; Yoo, Seung-Jin; Paik, Ki-Chung; Choi, Hyung-Do; Kim, Nam

    2013-01-01

    Objectives As public concern on possible harmful effects of mobile phone in children has been raised, information of epidemiological characteristics of mobile phone use in children and adolescents will be essential for public health policy. Methods Using three databases (n=21,693) collected from 2008 to 2011, we examined characteristics of mobile phone ownership and use, and socioeconomic positions (SEP) in Korean children and adolescents. Results The ownership rate and the amount of mobile phone use were higher in females than males, in higher school grades than lower grades, and at 2011 than 2008. The average age of first mobile phone ownership was shown to decrease from 12.5 years in currently high school students to 8.4 years in currently elementary school students at 2011. More than 90% of children in the 5th grade owned a mobile phone. More children owned a mobile phone in lower SEP communities than in higher SEP. Children with parents educated less than those with parents educated more were more likely to own and use mobile phone. Conclusions Considering the epidemiological characteristics of mobile phone use, precautionary measures to prevent unnecessary exposure to mobile phones are needed in children and adolescents. PMID:24498595

  14. Estimation of retired mobile phones generation in China: A comparative study on methodology

    SciTech Connect

    Li, Bo; Yang, Jianxin; Lu, Bin; Song, Xiaolong

    2015-01-15

    Highlights: • The sales data of mobile phones in China was revised by considering the amount of smuggled and counterfeit mobile phones. • The estimation of retired mobile phones in China was made by comparing some relevant methods. • The advanced result of estimation can help improve the policy-making. • The method suggested in this paper can be also used in other countries. • Some discussions on methodology are also conducted in order for the improvement. - Abstract: Due to the rapid development of economy and technology, China has the biggest production and possession of mobile phones around the world. In general, mobile phones have relatively short life time because the majority of users replace their mobile phones frequently. Retired mobile phones represent the most valuable electrical and electronic equipment (EEE) in the main waste stream because of such characteristics as large quantity, high reuse/recovery value and fast replacement frequency. Consequently, the huge amount of retired mobile phones in China calls for a sustainable management system. The generation estimation can provide fundamental information to construct the sustainable management system of retired mobile phones and other waste electrical and electronic equipment (WEEE). However, the reliable estimation result is difficult to get and verify. The priority aim of this paper is to provide proper estimation approach for the generation of retired mobile phones in China, by comparing some relevant methods. The results show that the sales and new method is in the highest priority in estimation of the retired mobile phones. The result of sales and new method shows that there are 47.92 million mobile phones retired in 2002, and it reached to 739.98 million in China in 2012. It presents an increasing tendency with some fluctuations clearly. Furthermore, some discussions on methodology, such as the selection of improper approach and error in the input data, are also conducted in order to

  15. Atrial fibrillation detection using an iPhone 4S.

    PubMed

    Lee, Jinseok; Reyes, Bersain A; McManus, David D; Maitas, Oscar; Mathias, Oscar; Chon, Ki H

    2013-01-01

    Atrial fibrillation (AF) affects three to five million Americans and is associated with significant morbidity and mortality. Existing methods to diagnose this paroxysmal arrhythmia are cumbersome and/or expensive. We hypothesized that an iPhone 4S can be used to detect AF based on its ability to record a pulsatile photoplethysmogram signal from a fingertip using the built-in camera lens. To investigate the capability of the iPhone 4S for AF detection, we first used two databases, the MIT-BIH AF and normal sinus rhythm (NSR) to derive discriminatory threshold values between two rhythms. Both databases include RR time series originating from 250 Hz sampled ECG recordings. We rescaled the RR time series to 30 Hz so that the RR time series resolution is 1/30 (s) which is equivalent to the resolution from an iPhone 4S. We investigated three statistical methods consisting of the root mean square of successive differences (RMSSD), the Shannon entropy (ShE) and the sample entropy (SampE), which have been proved to be useful tools for AF assessment. Using 64-beat segments from the MIT-BIH databases, we found the beat-to-beat accuracy value of 0.9405, 0.9300, and 0.9614 for RMSSD, ShE, and SampE, respectively. Using an iPhone 4S, we collected 2-min pulsatile time series from 25 prospectively recruited subjects with AF pre- and postelectrical cardioversion. Using derived threshold values of RMSSD, ShE and SampE from the MIT-BIH databases, we found the beat-to-beat accuracy of 0.9844, 0.8494, and 0.9522, respectively. It should be recognized that for clinical applications, the most relevant objective is to detect the presence of AF in the data. Using this criterion, we achieved an accuracy of 100% for both the MIT-BIH AF and iPhone 4S databases.

  16. Can mobile phones used in strong motion seismology?

    NASA Astrophysics Data System (ADS)

    D'Alessandro, Antonino; D'Anna, Giuseppe

    2013-04-01

    Micro Electro-Mechanical Systems (MEMS) accelerometers are electromechanical devices able to measure static or dynamic accelerations. In the 1990s MEMS accelerometers revolutionized the automotive-airbag system industry and are currently widely used in laptops, game controllers and mobile phones. Nowadays MEMS accelerometers seems provide adequate sensitivity, noise level and dynamic range to be applicable to earthquake strong motion acquisition. The current use of 3 axes MEMS accelerometers in mobile phone maybe provide a new means to easy increase the number of observations when a strong earthquake occurs. However, before utilize the signals recorded by a mobile phone equipped with a 3 axes MEMS accelerometer for any scientific porpoise, it is fundamental to verify that the signal collected provide reliable records of ground motion. For this reason we have investigated the suitability of the iPhone 5 mobile phone (one of the most popular mobile phone in the world) for strong motion acquisition. It is provided by several MEMS devise like a three-axis gyroscope, a three-axis electronic compass and a the LIS331DLH three-axis accelerometer. The LIS331DLH sensor is a low-cost high performance three axes linear accelerometer, with 16 bit digital output, produced by STMicroelectronics Inc. We have tested the LIS331DLH MEMS accelerometer using a vibrating table and the EpiSensor FBA ES-T as reference sensor. In our experiments the reference sensor was rigidly co-mounted with the LIS331DHL MEMS sensor on the vibrating table. We assessment the MEMS accelerometer in the frequency range 0.2-20 Hz, typical range of interesting in strong motion seismology and earthquake engineering. We generate both constant and damped sine waves with central frequency starting from 0.2 Hz until 20 Hz with step of 0.2 Hz. For each frequency analyzed we generate sine waves with mean amplitude 50, 100, 200, 400, 800 and 1600 mg0. For damped sine waves we generate waveforms with initial amplitude

  17. Greening academia: Use and disposal of mobile phones among university students

    SciTech Connect

    Ongondo, F.O.; Williams, I.D.

    2011-07-15

    Research highlights: > Students use/disposal of mobile phones was assessed via a large-scale survey and a takeback trial. > We estimate 3.7 m phones stockpiled by UK students; 29.3 and 28.1 m stockpiled for Europe and USA. > Many students replace phones at least once a year; only a small number have used a takeback service. > Monetary incentives have greatest influence over willingness to utilise takeback services. > Universities should partner with established operators to conduct targeted takeback services. - Abstract: Mobile phones have relatively short lifecycles and are rapidly seen as obsolete by many users within little over a year. However, the reusability of these devices as well as their material composition means that in terms of mass and volume, mobile phones represent the most valuable electronic products that are currently found in large numbers in waste streams. End-of-life mobile phones are a high value (from a reuse and resource perspective), high volume (quantity), low cost (residual monetary value) and transient (short lifecycle) electronic product. There are very large numbers of higher education (mainly university) students in the world - there are >2.4 million in the UK alone, 19 million in Europe and 18.2 million in the USA - and they often replace their mobile phones several times before graduation. Thus, because of the potentially significant environmental and economic impacts, a large scale survey of students at 5 UK universities was conducted to assess the behaviour of students with regard to their use and disposal of mobile phones. Additionally, a small scale trial mobile phone takeback service at one of the universities was carried out. The findings indicate that many students replace their phones at least once a year; replacing broken phones, getting upgrades from network operators, remaining 'fashionable' and a desire to have a handset with a longer battery life are the main reasons for such rapid replacement. Almost 60% of replaced

  18. Towards autonomous lab-on-a-chip devices for cell phone biosensing.

    PubMed

    Comina, Germán; Suska, Anke; Filippini, Daniel

    2016-03-15

    Modern cell phones are a ubiquitous resource with a residual capacity to accommodate chemical sensing and biosensing capabilities. From the different approaches explored to capitalize on such resource, the use of autonomous disposable lab-on-a-chip (LOC) devices-conceived as only accessories to complement cell phones-underscores the possibility to entirely retain cell phones' ubiquity for distributed biosensing. The technology and principles exploited for autonomous LOC devices are here selected and reviewed focusing on their potential to serve cell phone readout configurations. Together with this requirement, the central aspects of cell phones' resources that determine their potential for analytical detection are examined. The conversion of these LOC concepts into universal architectures that are readable on unaccessorized phones is discussed within this context.

  19. Recorded Behavior as a Valuable Resource for Diagnostics in Mobile Phone Addiction: Evidence from Psychoinformatics.

    PubMed

    Montag, Christian; Błaszkiewicz, Konrad; Lachmann, Bernd; Sariyska, Rayna; Andone, Ionut; Trendafilov, Boris; Markowetz, Alexander

    2015-10-19

    Psychologists and psychiatrists commonly rely on self-reports or interviews to diagnose or treat behavioral addictions. The present study introduces a novel source of data: recordings of the actual problem behavior under investigation. A total of N = 58 participants were asked to fill in a questionnaire measuring problematic mobile phone behavior featuring several questions on weekly phone usage. After filling in the questionnaire, all participants received an application to be installed on their smartphones, which recorded their phone usage for five weeks. The analyses revealed that weekly phone usage in hours was overestimated; in contrast, numbers of call and text message related variables were underestimated. Importantly, several associations between actual usage and being addicted to mobile phones could be derived exclusively from the recorded behavior, but not from self-report variables. The study demonstrates the potential benefit to include methods of psychoinformatics in the diagnosis and treatment of problematic mobile phone use.

  20. Recorded Behavior as a Valuable Resource for Diagnostics in Mobile Phone Addiction: Evidence from Psychoinformatics

    PubMed Central

    Montag, Christian; Błaszkiewicz, Konrad; Lachmann, Bernd; Sariyska, Rayna; Andone, Ionut; Trendafilov, Boris; Markowetz, Alexander

    2015-01-01

    Psychologists and psychiatrists commonly rely on self-reports or interviews to diagnose or treat behavioral addictions. The present study introduces a novel source of data: recordings of the actual problem behavior under investigation. A total of N = 58 participants were asked to fill in a questionnaire measuring problematic mobile phone behavior featuring several questions on weekly phone usage. After filling in the questionnaire, all participants received an application to be installed on their smartphones, which recorded their phone usage for five weeks. The analyses revealed that weekly phone usage in hours was overestimated; in contrast, numbers of call and text message related variables were underestimated. Importantly, several associations between actual usage and being addicted to mobile phones could be derived exclusively from the recorded behavior, but not from self-report variables. The study demonstrates the potential benefit to include methods of psychoinformatics in the diagnosis and treatment of problematic mobile phone use. PMID:26492275

  1. Self-reported mobile phone use and semen parameters among men from a fertility clinic

    PubMed Central

    Lewis, Ryan C.; Mínguez-Alarcón, Lidia; Meeker, John D.; Williams, Paige L.; Mezei, Gabor; Ford, Jennifer B.; Hauser, Russ

    2017-01-01

    There is increasing concern that use of mobile phones, a source of low-level radio-frequency electromagnetic fields, may be associated with poor semen quality, but the epidemiologic evidence is limited and conflicting. The relationship between mobile phone use patterns and markers of semen quality was explored in a longitudinal cohort study of 153 men that attended an academic fertility clinic in Boston, Massachusetts. Information on mobile phone use duration, headset or earpiece use, and the body location in which the mobile phone was carried was ascertained via nurse-administered questionnaire. Semen samples (n=350) were collected and analyzed onsite. To account for multiple semen samples per man, linear mixed models with random intercepts were used to investigate the association between mobile phone use and semen parameters. Overall, there was no evidence for a relationship between mobile phone use and semen quality. PMID:27838386

  2. Self-reported mobile phone use and semen parameters among men from a fertility clinic.

    PubMed

    Lewis, Ryan C; Mínguez-Alarcón, Lidia; Meeker, John D; Williams, Paige L; Mezei, Gabor; Ford, Jennifer B; Hauser, Russ

    2017-01-01

    There is increasing concern that use of mobile phones, a source of low-level radio-frequency electromagnetic fields, may be associated with poor semen quality, but the epidemiologic evidence is limited and conflicting. The relationship between mobile phone use patterns and markers of semen quality was explored in a longitudinal cohort study of 153 men that attended an academic fertility clinic in Boston, Massachusetts. Information on mobile phone use duration, headset or earpiece use, and the body location in which the mobile phone was carried was ascertained via nurse-administered questionnaire. Semen samples (n=350) were collected and analyzed onsite. To account for multiple semen samples per man, linear mixed models with random intercepts were used to investigate the association between mobile phone use and semen parameters. Overall, there was no evidence for a relationship between mobile phone use and semen quality.

  3. Mobile Phone Use and Human-Wildlife Conflict in Northern Tanzania

    NASA Astrophysics Data System (ADS)

    Lewis, Ashley L.; Baird, Timothy D.; Sorice, Michael G.

    2016-07-01

    Throughout the developing world, mobile phones are spreading rapidly into rural areas where subsistence livelihoods, biodiversity conservation, and human-wildlife conflict (HWC) are each common. Despite this trend, little is known about the relationship between mobile phones and HWC in conservation landscapes. This paper examines this relationship within ethnically Maasai communities in northern Tanzania on the border of Tarangire National Park. Mixed qualitative and quantitative methods of data collection and analysis are used to (1) describe how Maasai agro-pastoralists use phones to manage human-wildlife interactions; and (2) assess the relationship between phone use and measures of HWC, controlling for other factors. The findings indicate that households use phones to reduce the number and severity of HWC events and that the relationship between phones and HWC varies according to the type of HWC.

  4. Keeping in touch. Cell phone use in people with schizophrenia disorders.

    PubMed

    Beebe, Lora Humphrey; Smith, Kathlene; Bennett, Chris; Bentley, Katherine; Walters, Amanda B; Hancock, Beverly; Farmer, Shirley Y; Earle, Karen; White, Sheila

    2010-04-01

    There is limited research exploring telephone intervention for psychiatric clients; no studies specific to cell phone use have been conducted. This pilot study examined the feasibility and acceptability of cell phone use in individuals with schizophrenia spectrum disorders (SSDs). Ten outpatients with SSDs were provided with previously activated cell phones for 5 months; trained nurses contacted participants weekly. Seven participants completed the 5-month follow-up period. A minority of participants reported difficulty retrieving messages and answering or charging their phone. These preliminary findings indicate the majority of individuals with SSDs are willing to use this method of communication and are able to do so with few problems. Possible barriers to the use of cell phones with this group include lifestyle factors and poor decision making. Future investigations should examine the use of cell phone access to foster personal safety, gain a sense of connectedness to others, and enhance quality of life.

  5. Cell phone conversing while driving in New Zealand: prevalence, risk perception and legislation.

    PubMed

    Hallett, Charlene; Lambert, Anthony; Regan, Michael A

    2011-05-01

    This study investigated (i) the prevalence of conversing on a cell phone while driving in New Zealand, (ii) respondents' perception of risk regarding this behaviour and (iii) attitudes towards legislation banning cell phone use while driving. In addition, the study examined the association between the prevalence of conversing on a cell phone and risk perception. Anonymous, self-reported, survey data was collected via the internet from 1057 drivers nationwide regarding the frequency of conversing on a cell phone, including hands-free and hand-held conversing, risk perception, views on legislation, and demographic information. A positive relationship was found between the frequency of conversing on a cell phone and risk perception; that is, as the frequency of conversing on a cell phone increased, the perceived risk of this behaviour decreased.

  6. India calling: harnessing the promise of mobile phones for HIV healthcare.

    PubMed

    Shet, Anita; de Costa, Ayesha

    2011-02-01

    The technology that has been able to straddle the digital divide most effectively in resource-constrained settings has been the mobile phone. The tremendous growth seen in Africa and Asia in mobile phone use over the last half decade has spurred plans to integrate mobile phones with healthcare delivery globally. A major challenge in HIV healthcare is sustaining good adherence to antiretroviral treatment. This report focuses on specific applications of mobile phones in the area of HIV healthcare delivery. It highlights the widespread use of mobile phones in developing areas of the world, those which have a heavy burden of HIV and infectious diseases. There is scope for exploiting existing mobile phone technology and infrastructure for healthcare enhancement in resource-constrained settings.

  7. [Study of the influence of cellular phones and personal computers on schoolchildren's health: hygienic aspects].

    PubMed

    Chernenkov, Iu V; Gumeniuk, O I

    2009-01-01

    The paper presents the results of studying the impact of using cellular phones and personal computers on the health status of 277 Saratov schoolchildren (mean age 13.2 +/- 2.3 years). About 80% of the adolescents have been ascertained to use cellular phones and computers mainly for game purposes. The active users of cellular phones and computers show a high aggressiveness, anxiety, hostility, and social stress, low stress resistance, and susceptibility to arterial hypotension. The negative influence of cellular phones and computers on the schoolchildren's health increases with the increased duration and frequency of their use.

  8. Cell phones and male infertility: a review of recent innovations in technology and consequences.

    PubMed

    Agarwal, Ashok; Singh, Aspinder; Hamada, Alaa; Kesari, Kavindra

    2011-01-01

    Cell phones have become a vital part of everyday life. However, the health risks associated with their usage are often overlooked. Recently, evidence from several studies supports a growing claim that cell phone usage may have a detrimental effect on sperm parameters leading to decreased male fertility. Nonetheless, other studies showed no conclusive link between male infertility and cell phone usage. The ambiguity of such results is attributed to the lack of a centralized assay for measuring inflicted damage caused by cell phones. Study design, ethics, and reproducibility are all aspects which must be standardized before any conclusions can be made.

  9. Smart phone usage and addiction among dental students in Saudi Arabia: a cross sectional study.

    PubMed

    Venkatesh, Elluru; Jemal, Mohammad Yousef Al; Samani, Abdullah Saleh Al

    2017-04-06

    Purpose The main aim of this research is to explore measures of smart phone usage, smart phone addiction, and their associations with demographic and health behavior-related variables among dental students in Saudi Arabia. Methods A Cross sectional study involving sample of 205 dental students from Qaseem Private College were surveyed for smart phone use and addiction using the short version of the Smartphone Addiction Scale for Adolescents (SAS-SV). Results Smart phone addiction was seen in 136 (71.9%) of the 189 students. The findings from our study revealed that high stress levels, low physical activity, higher body mass index (BMI), longer duration of smart phone usage, higher frequency of usage, shorter time period until first smart phone use in the morning and social networking sites (SNS) were associated significantly with the smart phone addiction. Conclusion The current research gives the information about the extent of smart phone over usage and addiction among the dental students in Saudi Arabia with indication of the predictors of addiction and the need for further research in the area with comprehensible interpretation to spread the awareness of the smart phone addiction.

  10. Mobile phone use patterns and preferences in safety net office-based buprenorphine patients

    PubMed Central

    Tofighi, Babak; Grossman, Ellie; Buirkle, Emily; McNeely, Jennifer; Gourevitch, Marc; Lee, Joshua D.

    2015-01-01

    Background Integrating mobile phone technologies in addiction treatment is of increasing importance, and may optimize patient engagement with their care and enhance the delivery of existing treatment strategies. Few studies have evaluated mobile phone and text message (TM) use patterns in persons enrolled in addiction treatment, and none have assessed use in safety net, office-based buprenorphine practices. Methods A 28-item, quantitative and qualitative semi-structured survey was administered to opiate-dependent adults in an urban, publicly funded, office-based buprenorphine program. Survey domains included: demographic characteristics, mobile phone and TM use patterns, and mobile phone and TM use patterns and preferences pertaining to their recovery. Results Surveyors approached 73 of the 155 eligible subjects (47%); 71 respondents completed the survey. Nearly all participants reported mobile phone ownership (93%) and TM use (93%), and most reported ‘very much’ or ‘somewhat’ comfort sending TM (79%). TM contact with 12-step group sponsors, friends, family members, and counselors was also described (32%). Nearly all preferred having their providers’ mobile phone number (94%) and alerting the clinic via TM in the event of a potential relapse to receive both supportive TM and a phone call from their buprenorphine provider was also well received (62%). Conclusions Mobile phone and TM use patterns and preferences among this sample of office-based buprenorphine participants highlight the potential of adopting patient-centered mobile phone based interventions in this treatment setting. PMID:25918966

  11. Short-term effects of a teenage driver cell phone restriction.

    PubMed

    Foss, Robert D; Goodwin, Arthur H; McCartt, Anne T; Hellinga, Laurie A

    2009-05-01

    On December 1, 2006, North Carolina began prohibiting use of any mobile communication device by drivers younger than 18. The current study examined the effects of the law on teenage drivers' cell phone use. Teenage drivers were observed at high schools in North Carolina 1-2 months before and approximately 5 months after the law took effect. The proportion of teenagers using cell phones did not change significantly (11.0% before the law took effect, 11.8% after). Cell phone use among teenage drivers at high schools in South Carolina, an adjacent state without a teenage driver phone ban, was stable at about 13%. Interviews were conducted with parents and teenagers in North Carolina both before and after the law took effect. In post-law interviews, teenagers were more likely than parents to say they knew about the cell phone restriction (64% vs. 39%), but support for the ban was greater among parents (95% vs. 74%). Only 22% of teenagers and 13% of parents believed the law was being enforced fairly often or a lot. Although the proportion of teenagers who reported using phones while driving declined somewhat following the law, about half admitted they used their phones, if they had driven, on the day prior to the interview. Overall, the findings suggest that North Carolina's cell phone restriction had little to no effect on teenage drivers' use of cell phones shortly after the law took effect.

  12. A feasibility study of cell phone and landline phone interviews for monitoring of risk and protection factors for chronic diseases in Brazil.

    PubMed

    Moura, Erly Catarina; Claro, Rafael Moreira; Bernal, Regina; Ribeiro, Juliano; Malta, Deborah Carvalho; Morais Neto, Otaliba

    2011-02-01

    The study objective was to evaluate the feasibility of interviews by cell phone as a complement to interviews by landline to estimate risk and protection factors for chronic non-communicable diseases. Adult cell phone users were evaluated by random digit dialing. Questions asked were: age, sex, education, race, marital status, ownership of landline and cell phones, health condition, weight and height, medical diagnosis of hypertension and diabetes, physical activity, diet, binge drinking and smoking. The estimates were calculated using post-stratification weights. The cell phone interview system showed a reduced capacity to reach elderly and low educated populations. The estimates of the risk and protection factors for chronic non-communicable diseases in cell phone interviews were equal to the estimates obtained by landline phone. Eligibility, success and refusal rates using the cell phone system were lower than those of the landline system, but loss and cost were much higher, suggesting it is unsatisfactory as a complementary method in such a context.

  13. SecurePhone: a mobile phone with biometric authentication and e-signature support for dealing secure transactions on the fly

    NASA Astrophysics Data System (ADS)

    Ricci, R.; Chollet, G.; Crispino, M. V.; Jassim, S.; Koreman, J.; Olivar-Dimas, M.; Garcia-Salicetti, S.; Soria-Rodriguez, P.

    2006-05-01

    This article presents an overview of the SecurePhone project, with an account of the first results obtained. SecurePhone's primary aim is to realise a mobile phone prototype - the 'SecurePhone' - in which biometrical authentication enables users to deal secure, dependable transactions over a mobile network. The SecurePhone is based on a commercial PDA-phone, supplemented with specific software modules and a customised SIM card. It integrates in a single environment a number of advanced features: access to cryptographic keys through strong multimodal biometric authentication; appending and verification of digital signatures; real-time exchange and interactive modification of (esigned) documents and voice recordings. SecurePhone's 'biometric recogniser' is based on original research. A fused combination of three different biometric methods - speaker, face and handwritten signature verification - is exploited, with no need for dedicated hardware components. The adoption of non-intrusive, psychologically neutral biometric techniques is expected to mitigate rejection problems that often inhibit the social use of biometrics, and speed up the spread of e-signature technology. Successful biometric authentication grants access to SecurePhone's built-in esignature services through a user-friendly interface. Special emphasis is accorded to the definition of a trustworthy security chain model covering all aspects of system operation. The SecurePhone is expected to boost m-commerce and open new scenarios for m-business and m-work, by changing the way people interact and by improving trust and confidence in information technologies, often considered intimidating and difficult to use. Exploitation plans will also explore other application domains (physical and logical access control, securised mobile communications).

  14. Albumin testing in urine using a smart-phone.

    PubMed

    Coskun, Ahmet F; Nagi, Richie; Sadeghi, Kayvon; Phillips, Stephen; Ozcan, Aydogan

    2013-11-07

    We demonstrate a digital sensing platform, termed Albumin Tester, running on a smart-phone that images and automatically analyses fluorescent assays confined within disposable test tubes for sensitive and specific detection of albumin in urine. This light-weight and compact Albumin Tester attachment, weighing approximately 148 grams, is mechanically installed on the existing camera unit of a smart-phone, where test and control tubes are inserted from the side and are excited by a battery powered laser diode. This excitation beam, after probing the sample of interest located within the test tube, interacts with the control tube, and the resulting fluorescent emission is collected perpendicular to the direction of the excitation, where the cellphone camera captures the images of the fluorescent tubes through the use of an external plastic lens that is inserted between the sample and the camera lens. The acquired fluorescent images of the sample and control tubes are digitally processed within one second through an Android application running on the same cellphone for quantification of albumin concentration in the urine specimen of interest. Using a simple sample preparation approach which takes ~5 min per test (including the incubation time), we experimentally confirmed the detection limit of our sensing platform as 5-10 μg mL(-1) (which is more than 3 times lower than the clinically accepted normal range) in buffer as well as urine samples. This automated albumin testing tool running on a smart-phone could be useful for early diagnosis of kidney disease or for monitoring of chronic patients, especially those suffering from diabetes, hypertension, and/or cardiovascular diseases.

  15. EPR dosimetry intercomparison using smart phone touch screen glass.

    PubMed

    Fattibene, Paola; Trompier, Francois; Wieser, Albrecht; Brai, Maria; Ciesielski, Bartlomej; De Angelis, Cinzia; Della Monaca, Sara; Garcia, Tristan; Gustafsson, H; Hole, Eli Olag; Juniewicz, M; Krefft, K; Longo, Anna; Leveque, Philippe; Lund, Eva; Marrale, Maurizio; Michalec, Barbara; Mierzwińska, Gabriela; Rao, J L; Romanyukha, Alexander A; Tuner, Hasan

    2014-05-01

    This paper presents the results of an interlaboratory comparison of retrospective dosimetry using the electron paramagnetic resonance method. The test material used in this exercise was glass coming from the touch screens of smart phones that might be used as fortuitous dosimeters in a large-scale radiological incident. There were 13 participants to whom samples were dispatched, and 11 laboratories reported results. The participants received five calibration samples (0, 0.8, 2, 4, and 10 Gy) and four blindly irradiated samples (0, 0.9, 1.3, and 3.3 Gy). Participants were divided into two groups: for group A (formed by three participants), samples came from a homogeneous batch of glass and were stored in similar setting; for group B (formed by eight participants), samples came from different smart phones and stored in different settings of light and temperature. The calibration curves determined by the participants of group A had a small error and a critical level in the 0.37-0.40-Gy dose range, whereas the curves determined by the participants of group B were more scattered and led to a critical level in the 1.3-3.2-Gy dose range for six participants out of eight. Group A were able to assess the dose within 20 % for the lowest doses (<1.5 Gy) and within 5 % for the highest doses. For group B, only the highest blind dose could be evaluated in a reliable way because of the high critical values involved. The results from group A are encouraging, whereas the results from group B suggest that the influence of environmental conditions and the intervariability of samples coming from different smart phones need to be further investigated. An alongside conclusion is that the protocol was easily transferred to participants making a network of laboratories in case of a mass casualty event potentially feasible.

  16. [Internet and cell phone addiction: passing fad or disorder?].

    PubMed

    Sanchez-Carbonell, Xavier; Beranuy, Marta; Castellana, Montserrat; Chamarro, Ander; Oberst, Ursula

    2008-01-01

    The Information and Communication Technologies (ICT) generate new styles of meeting people or connecting with friends or strangers. In this context, the internet and the mobile phone deserve special attention. This article deals with the maladaptive use of these technologies. By reviewing the literature published between 1991 and 2005 and indexed in the databases of PsycINFO, Medline, Psicodoc, IME, and ISOC, we aim to determine whether maladaptive use of these technologies can be considered a mental disorder, and if so, of which type. We describe the psychological phenomena of maladaptive use of the internet and mobile phones, we review research on prevalence and possible risk groups, and finally we discuss some of the criticisms made with regard to the existence and classification of this disorder. It is concluded that excessive use of the internet can lead to a mental disorder of the addictive type, which can particularly affect individuals with special emotional needs, as well as adolescents and young adults. Among specific applications of the internet, a major risk is found for the use of communicative and synchronic applications, such as chats and online role games, since they permit hyperpersonal communication, playing with different identities, and projections and dissociation without consequences in real life. Furthermore, the internet can play an important role in the development and maintenance of other addictions, such as pathological gambling and sex addiction. In contrast to the case of the internet, maladaptive use of mobile phones may be considered abuse, but not addiction, since their use does not lead to the rapid emotional changes or the playing with identities that can take place in chats and online role games.

  17. Mobile Phones and Social Media Empower the Citizen Seismologist

    NASA Astrophysics Data System (ADS)

    Bray, J.; Dashti, S.; Reilly, J.; Bayen, A. M.; Glaser, S. D.

    2014-12-01

    Emergency responders must "see" the effects of an earthquake clearly and rapidly for effective response. Mobile phone and information technology can be used to measure ground motion intensity parameters and relay that information to emergency responders. However, the phone sensor is an imperfect device and has a limited operational range. Thus, shake table tests were performed to evaluate their reliability as seismic monitoring instruments. Representative handheld devices, either rigidly connected to the table or free to move, measured shaking intensity parameters well. Bias in 5%-damped spectral accelerations measured by phones was less than 0.05 and 0.2 [log(g)] during one-dimensional (1-D) and three-dimensional (3-D) shaking in frequencies ranging from 1 Hz to 10 Hz. They did tend to over-estimate the Arias Intensity, but this error declined for stronger motions with larger signal-to-noise ratios. Additionally, much of the data about infrastructure performance and geotechnical effects of an earthquake are lost soon after an earthquake occurs as efforts move to the recovery phase. A better methodology for reliable and rapid collection of perishable hazards data will enhance scientific inquiry and accelerate the building of disaster-resilient cities. Post-earthquake reconnaissance efforts can be aided through the strategic collection and reuse of social media data and other remote sources of information. This is demonstrated through their use following the NSF-sponsored GEER response to the September 2013 flooding in Colorado. With these ubiquitous measurement devices in the hands of the citizen seismologist, a more accurate and rapid portrayal of the damage distribution during an earthquake may be provided to emergency responders and to the public.

  18. ELISA reader does not interfere by mobile phone radiofrequency radiation

    PubMed Central

    Mortazavi, Seyyed Mohammad Javad; Baradaran-Ghahfarokhi, Hamid Reza; Abdi, Mohammad Reza; Baradaran-Ghahfarokhi, Milad; Mostafavi, Nayyer Sadat; Mahmoudi, Golshan; Berenjkoub, Nafiseh; Akmali, Zahra; Hossein-Beigi, Fahimeh; Arsang, Vajiheh

    2016-01-01

    Background: The increasing number of mobile phones can physically cause electromagnetic interference (EMI) in medical environments; can also cause errors in immunoassays in laboratories. The ELISA readers are widely used as a useful diagnostic tool for Enzymun colorimetric assay in medicine. The aim of this study was to investigate whether the ELISA reader could be interfered by the exposure to the 900 MHz cell phones in the laboratory. Materials and Methods: Human serum samples were collected from 14 healthy donors (9 women and 5 men) and each sample was divided into four aliquots and was placed into four batches for the in-vitro quantitative determination of human chorionic gonadotropin (hCG). During colorimetric reading of the first, second, and third batches, the ELISA reader (Stat Fax 2100, Awareness Technology, Inc., USA) was exposed to 0.5, 1.0, and 2.0 W exposure of 900 MHz radiation, respectively. For the forth batch (control group), no radiation was applied. All experiments were performed comparing ELISA read out results of the I, II, and III batches with the control batch, using the Wilcoxon test with criterion level of P = 0.050. Results: The final scores in the exposed batches I, II, and III were not statistically significant relative to the control batch (P > 0.05). The results showed that 900 MHz radiation exposure did not alter the ELISA measured levels of hCG hormone in I (P = 0.219), II (P = 0.909), and III (P = 0.056) batches compared to the control batch. Conclusion: This study showed that ELISA reader does not interfere by mobile phone RF radiation at a closed contact (less than 5 cm distance). However, we recommend that medical institutions discuss these issues in the context of their specific use of technologies and frame a policy that is clear and straightforward to guide staff, patients, and visitors. PMID:27376040

  19. Electromagnetic fields from mobile phone base station - variability analysis.

    PubMed

    Bienkowski, Pawel; Zubrzak, Bartlomiej

    2015-09-01

    The article describes the character of electromagnetic field (EMF) in mobile phone base station (BS) surroundings and its variability in time with an emphasis on the measurement difficulties related to its pulse and multi-frequency nature. Work also presents long-term monitoring measurements performed recently in different locations in Poland - small city with dispersed building development and in major polish city - dense urban area. Authors tried to determine the trends in changing of EMF spectrum analyzing daily changes of measured EMF levels in those locations. Research was performed using selective electromagnetic meters and also EMF meter with spectrum analysis.

  20. Smart phone orientation estimation comparisons using three axis gimbal

    NASA Astrophysics Data System (ADS)

    Gaquin, Kevin G.; Fields, MaryAnne

    2016-05-01

    Smartphones have put powerful sensor arrays in nearly everyone's pockets. Fusing the data from these sensors it is possible to estimate the phone's current orientation. In this study we utilize a 3 axis gimbal to compare the performance of multiple orientation estimation algorithms. Controlling the position of the gimbal allows us to compare the known device orientation to the estimated orientation. Using this same method we determine where each algorithm's faults lie, and where they begin to break down. Then repeating these movements we are able to compare each algorithm to each other.

  1. Smart phones: platform enabling modular, chemical, biological, and explosives sensing

    NASA Astrophysics Data System (ADS)

    Finch, Amethist S.; Coppock, Matthew; Bickford, Justin R.; Conn, Marvin A.; Proctor, Thomas J.; Stratis-Cullum, Dimitra N.

    2013-05-01

    Reliable, robust, and portable technologies are needed for the rapid identification and detection of chemical, biological, and explosive (CBE) materials. A key to addressing the persistent threat to U.S. troops in the current war on terror is the rapid detection and identification of the precursor materials used in development of improvised explosive devices, homemade explosives, and bio-warfare agents. However, a universal methodology for detection and prevention of CBE materials in the use of these devices has proven difficult. Herein, we discuss our efforts towards the development of a modular, robust, inexpensive, pervasive, archival, and compact platform (android based smart phone) enabling the rapid detection of these materials.

  2. Identification of Mobile Phones Using the Built-In Magnetometers Stimulated by Motion Patterns.

    PubMed

    Baldini, Gianmarco; Dimc, Franc; Kamnik, Roman; Steri, Gary; Giuliani, Raimondo; Gentile, Claudio

    2017-04-06

    We investigate the identification of mobile phones through their built-in magnetometers. These electronic components have started to be widely deployed in mass market phones in recent years, and they can be exploited to uniquely identify mobile phones due their physical differences, which appear in the digital output generated by them. This is similar to approaches reported in the literature for other components of the mobile phone, including the digital camera, the microphones or their RF transmission components. In this paper, the identification is performed through an inexpensive device made up of a platform that rotates the mobile phone under test and a fixed magnet positioned on the edge of the rotating platform. When the mobile phone passes in front of the fixed magnet, the built-in magnetometer is stimulated, and its digital output is recorded and analyzed. For each mobile phone, the experiment is repeated over six different days to ensure consistency in the results. A total of 10 phones of different brands and models or of the same model were used in our experiment. The digital output from the magnetometers is synchronized and correlated, and statistical features are extracted to generate a fingerprint of the built-in magnetometer and, consequently, of the mobile phone. A SVM machine learning algorithm is used to classify the mobile phones on the basis of the extracted statistical features. Our results show that inter-model classification (i.e., different models and brands classification) is possible with great accuracy, but intra-model (i.e., phones with different serial numbers and same model) classification is more challenging, the resulting accuracy being just slightly above random choice.

  3. Symptoms and Cognitive Functions in Adolescents in Relation to Mobile Phone Use during Night.

    PubMed

    Schoeni, Anna; Roser, Katharina; Röösli, Martin

    2015-01-01

    Many adolescents tend to leave their mobile phones turned on during night, accepting that they may be awakened by an incoming text message or call. Using self-reported and objective operator recorded mobile phone use data, we thus aimed to analyze how being awakened during night by mobile phone affects adolescents' perceived health and cognitive functions. In this cross-sectional study, 439 adolescents completed questionnaires about their mobile phone use during night, health related quality of life and possible confounding factors. Standardized computerized cognitive tests were performed to assess memory and concentration capacity. Objective operator recorded mobile phone use data was further collected for 233 study participants. Data were analyzed by multivariable regression models adjusted for relevant confounders including amount of mobile phone use. For adolescents reporting to be awakened by a mobile phone during night at least once a month the odds ratio for daytime tiredness and rapid exhaustibility were 1.86 (95% CI: 1.02-3.39) and 2.28 (95% CI: 0.97-5.34), respectively. Similar results were found when analyzing objective operator recorded mobile phone use data (tiredness: 1.63, 95% CI: 0.94-2.82 and rapid exhaustibility: 2.32, 95% CI: 1.01-5.36). The cognitive tests on memory and concentration capacity were not related to mobile phone use during night. Overall, being awakened during night by mobile phone was associated with an increase in health symptom reports such as tiredness, rapid exhaustibility, headache and physical ill-being, but not with memory and concentration capacity. Prevention strategies should focus on helping adolescents set limits for their accessibility by mobile phone, especially during night.

  4. Mobile phone technology and hospitalized patients: a cross-sectional surveillance study of bacterial colonization, and patient opinions and behaviours.

    PubMed

    Brady, R R; Hunt, A C; Visvanathan, A; Rodrigues, M A; Graham, C; Rae, C; Kalima, P; Paterson, H M; Gibb, A P

    2011-06-01

    Healthcare workers' mobile phones provide a reservoir of bacteria known to cause nosocomial infections. UK National Health Service restrictions on the utilization of mobile phones within hospitals have been relaxed; however, utilization of these devices by inpatients and the risk of cross-contamination are currently unknown. Here, we examine demographics and characteristics of mobile phone utilization by inpatients and phone surface microbial contamination. One hundred and two out of 145 (70.3%) inpatients who completed a questionnaire detailing their opinions and utilization of mobile phones, also provided their mobile phones for bacteriological analysis and comparative bacteriological swabs from their nasal cavities; 92.4% of patients support utilization of mobile phones by inpatients; indeed, 24.5% of patients stated that mobile phones were vital to their inpatient stay. Patients in younger age categories were more likely to possess a mobile phone both inside and outside hospital (p <0.01) but there was no gender association. Eighty-six out of 102 (84.3%) patients' mobile phone swabs were positive for microbial contamination. Twelve (11.8%) phones grew bacteria known to cause nosocomial infection. Seven (6.9%) phones and 32 (31.4%) nasal swabs demonstrated Staphylococcus aureus contamination. MSSA/MRSA contamination of phones was associated with concomitant nasal colonization. Patient utilization of mobile phones in the clinical setting is popular and common; however, we recommend that patients are educated by clear guidelines and advice on inpatient mobile phone etiquette, power charging safety, regular cleaning of phones and hand hygiene, and advised not to share phones or related equipment with other inpatients in order to prevent transmission of bacteria.

  5. Greening academia: use and disposal of mobile phones among university students.

    PubMed

    Ongondo, F O; Williams, I D

    2011-07-01

    Mobile phones have relatively short lifecycles and are rapidly seen as obsolete by many users within little over a year. However, the reusability of these devices as well as their material composition means that in terms of mass and volume, mobile phones represent the most valuable electronic products that are currently found in large numbers in waste streams. End-of-life mobile phones are a high value (from a reuse and resource perspective), high volume (quantity), low cost (residual monetary value) and transient (short lifecycle) electronic product. There are very large numbers of higher education (mainly university) students in the world--there are>2.4 million in the UK alone, 19 million in Europe and 18.2 million in the USA--and they often replace their mobile phones several times before graduation. Thus, because of the potentially significant environmental and economic impacts, a large scale survey of students at 5 UK universities was conducted to assess the behaviour of students with regard to their use and disposal of mobile phones. Additionally, a small scale trial mobile phone takeback service at one of the universities was carried out. The findings indicate that many students replace their phones at least once a year; replacing broken phones, getting upgrades from network operators, remaining "fashionable" and a desire to have a handset with a longer battery life are the main reasons for such rapid replacement. Almost 60% of replaced phones are not sent to reuse or recycling operations but are stockpiled by students mainly as spare/backup phones. Approximately 61% of students own an extra mobile phone with male students replacing their phones more often than females. In particular, the results highlight the potentially huge stockpile of mobile phones--and consequently valuable supplies of rare metals--being held by the public; we estimate that there are 3.7 million phones stockpiled by students in UK higher education alone (29.3 and 28.1 million

  6. Infrared Thermal Imaging System on a Mobile Phone

    PubMed Central

    Lee, Fu-Feng; Chen, Feng; Liu, Jing

    2015-01-01

    A novel concept towards pervasively available low-cost infrared thermal imaging system lunched on a mobile phone (MTIS) was proposed and demonstrated in this article. Through digestion on the evolutional development of milestone technologies in the area, it can be found that the portable and low-cost design would become the main stream of thermal imager for civilian purposes. As a representative trial towards this important goal, a MTIS consisting of a thermal infrared module (TIM) and mobile phone with embedded exclusive software (IRAPP) was presented. The basic strategy for the TIM construction is illustrated, including sensor adoption and optical specification. The user-oriented software was developed in the Android environment by considering its popularity and expandability. Computational algorithms with non-uniformity correction and scene-change detection are established to optimize the imaging quality and efficiency of TIM. The performance experiments and analysis indicated that the currently available detective distance for the MTIS is about 29 m. Furthermore, some family-targeted utilization enabled by MTIS was also outlined, such as sudden infant death syndrome (SIDS) prevention, etc. This work suggests a ubiquitous way of significantly extending thermal infrared image into rather wide areas especially health care in the coming time. PMID:25942639

  7. Electromagnetic interference to infusion pumps from GSM mobile phones.

    PubMed

    Calcagnini, G; Bartolini, P; Floris, M; Triventi, M; Cianfanelli, P; Scavino, G; Proietti, L; Barbaro, V

    2004-01-01

    Electromagnetic interference (EMI) to critical care medical devices has been reported by various groups. Previuos studies have demonstrated that infusion and syringe pumps are susceptible of false alarm buzzing and block, when exposed to various EMI sources. Whether these events may have clinical relevance is still debated. The risk of EMI depends on several factors such as phone emitted power, distance and carrier frequency. We investigated the EMI on infusion and siringe pumps from GSM phones at various distances and emitted powers. Malfunctions were observed in 4/7 infusion pumps and 1/4 syringe pumps exposed to mobiles at their maximum output, for distances as long as 30 cm. The maximum power not inducing any malfunction even at 0 cm distance was also determined. The selection of a proper maximum power class reduces significantly the risk of EMI. Such a function is already built in the GSM standard and thus represents one of the feasible solutions to the EMI problem in hospitals.

  8. A mobile phone-based ECG monitoring system.

    PubMed

    Iwamoto, Junichi; Yonezawa, Yoshiharu; Maki, Hiromichi; Ogawa, Hidekuni; Ninomiya, Ishio; Sada, Kouji; Hamada, Shingo; Hahn, Allen W; Caldwell, W Morton

    2006-01-01

    We have developed a telemedicine system for monitoring a patient's electrocardiogram during daily activities. The recording system consists of three ECG chest electrodes, a variable gain instrumentation amplifier, a low power 8-bit single-chip microcomputer, a 256 KB EEPROM and a 2.4 GHz low transmitting power mobile phone (PHS). The complete system is mounted on a single, lightweight, chest electrode array. When a heart discomfort is felt, the patient pushes the data transmission switch on the recording system. The system sends the recorded ECG waveforms of the two prior minutes and ECG waveforms of the two minutes after the switch is pressed, directly in the hospital server computer via the PHS. The server computer sends the data to the physician on call. The data is displayed on the doctor's Java mobile phone LCD (Liquid Crystal Display), so he or she can monitor the ECG regardless of their location. The developed ECG monitoring system is not only applicable to at-home patients, but should also be useful for monitoring hospital patients.

  9. Depth map from focus for cell-phone cameras

    NASA Astrophysics Data System (ADS)

    Safaee-Rad, R.; Aleksic, M.

    2008-02-01

    Cell-phone cameras generally use mini lenses that are wide-angle and fixed-focal length (4-6 mm) with a fixed aperture (usually f/2.8). As a result, these mini lenses have very short hyper-focal lengths (e.g., the estimated hyper-focal length for a 3.1-MP cell-phone camera module with a 5.6-mm mini lens is only about 109 cm which covers focused-object distances from about 55 cm to infinity). This combination of optical characteristics can be used effectively to achieve: (a) a faster process for auto-focusing based on a small number of pre-defined non-uniform lens-position intervals; and (b) a depth map generation (coarse or fine depending on the number of focus regions of interest--ROIs) which can be used for different image capture/processing operations such as flash/no-flash decision-making. The above two processes were implemented, tested and validated under different lighting conditions and scene contents.

  10. Prevalence and correlates of cell phone use among Texas drivers

    PubMed Central

    Wilkinson, Michelle L.; Brown, Austin L.; Moussa, Iman; Day, R. Sue

    2015-01-01

    Introduction Cell phone use while driving restricts peripheral awareness and impairs reaction time. This study assessed the 3-year prevalence of cell phone use (CPU) of drivers and characteristics associated with its use in six cities across Texas, 2011–2013. Methods CPU and driver characteristics were observed among motor vehicles (n = 1280) stopped at major intersections in medical and academic campuses. A multivariable logistic regression model described the association between driver characteristics and CPU. Results The overall prevalence of any CPU was 18.7%. Any type of CPU and talking tended to decline, while texting seemed to increase from 2011 to 2013. CPU was more likely among female drivers (OR = 1.63; 95% CI = 1.21, 2.20), drivers < 25 years of age (OR = 4.12; 95% CI = 2.29, 7.39), and drivers without passengers (OR = 4.40; 95% CI = 2.82, 6.88). Conclusion Despite its dangers, CPU remains popular among Texas drivers. CPU and texting bans should target public health campaigns towards female and younger drivers. PMID:26844064

  11. Adapting smart phone applications about physics education to blind students

    NASA Astrophysics Data System (ADS)

    Bülbül, M. Ş.; Yiğit, N.; Garip, B.

    2016-04-01

    Today, most of necessary equipment in a physics laboratory are available for smartphone users via applications. Physics teachers may measure from acceleration to sound volume with its internal sensors. These sensors collect data and smartphone applications make the raw data visible. Teachers who do not have well-equipped laboratories at their schools may have an opportunity to conduct experiments with the help of smart phones. In this study, we analyzed possible open source physics education applications in terms of blind users in inclusive learning environments. All apps are categorized as partially, full or non-supported. The roles of blind learner’s friend during the application are categorized as reader, describer or user. Mentioned apps in the study are compared with additional opportunities like size and downloading rates. Out of using apps we may also get information about whether via internet and some other extra information for different experiments in physics lab. Q-codes reading or augmented reality are two other opportunity provided by smart phones for users in physics labs. We also summarized blind learner’s smartphone experiences from literature and listed some suggestions for application designers about concepts in physics.

  12. Mobile phone camera benchmarking in low light environment

    NASA Astrophysics Data System (ADS)

    Peltoketo, Veli-Tapani

    2015-01-01

    High noise values and poor signal to noise ratio are traditionally associated to the low light imaging. Still, there are several other camera quality features which may suffer from low light environment. For example, what happens to the color accuracy and resolution or how the camera speed behaves in low light? Furthermore, how low light environments affect to the camera benchmarking and which metrics are the critical ones? The work contains standard based image quality measurements including noise, color, and resolution measurements in three different light environments: 1000, 100, and 30 lux. Moreover, camera speed measurements are done. Detailed measurement results of each quality and speed category are revealed and compared. Also a suitable benchmark algorithm is evaluated and corresponding score is calculated to find an appropriate metric which characterize the camera performance in different environments. The result of this work introduces detailed image quality and camera speed measurements of mobile phone camera systems in three different light environments. The paper concludes how different light environments influence to the metrics and which metrics should be measured in low light environment. Finally, a benchmarking score is calculated using measurement data of each environment and mobile phone cameras are compared correspondingly.

  13. Understanding the spreading patterns of mobile phone viruses

    NASA Astrophysics Data System (ADS)

    Wang, Pu; Gonzalez, Marta; Hidalgo, Cesar; Barabasi, Albert-Laszlo

    2009-03-01

    Mobile viruses are little more than a nuisance today, but given our increased reliance on wireless communication, in the near future they could pose more risk than their PC based counterparts. Despite of the more than three hundred mobile viruses known so far, little is known about their spreading pattern, partly due to a lack of data on the communication and travel patterns of mobile phone users. Starting from the traffic and the communication pattern of six million mobile phone users, we model the vulnerability of mobile communications against potential virus outbreaks. We show that viruses exploiting Bluetooth and multimedia messaging services (MMS) follow markedly different spreading patterns. The Bluetooth virus can reach all susceptible handsets, but spreads relatively slowly, as its spread is driven by human mobility. In contrast, an MMS virus can spread rapidly, but because the underlying social network is fragmented, it can reach only a small fraction of all susceptible users. This difference affects both their spreading rate, the number of infected users, as well as the defense measures one needs to take to protect the system against potential viral outbreak.

  14. Unveiling Spatial Epidemiology of HIV with Mobile Phone Data

    NASA Astrophysics Data System (ADS)

    Brdar, Sanja; Gavrić, Katarina; Ćulibrk, Dubravko; Crnojević, Vladimir

    2016-01-01

    An increasing amount of geo-referenced mobile phone data enables the identification of behavioral patterns, habits and movements of people. With this data, we can extract the knowledge potentially useful for many applications including the one tackled in this study - understanding spatial variation of epidemics. We explored the datasets collected by a cell phone service provider and linked them to spatial HIV prevalence rates estimated from publicly available surveys. For that purpose, 224 features were extracted from mobility and connectivity traces and related to the level of HIV epidemic in 50 Ivory Coast departments. By means of regression models, we evaluated predictive ability of extracted features. Several models predicted HIV prevalence that are highly correlated (>0.7) with actual values. Through contribution analysis we identified key elements that correlate with the rate of infections and could serve as a proxy for epidemic monitoring. Our findings indicate that night connectivity and activity, spatial area covered by users and overall migrations are strongly linked to HIV. By visualizing the communication and mobility flows, we strived to explain the spatial structure of epidemics. We discovered that strong ties and hubs in communication and mobility align with HIV hot spots.

  15. Disassembly sequencing problem: a case study of a cell phone

    NASA Astrophysics Data System (ADS)

    Gupta, Surendra M.; Erbis, Evren; McGovern, Seamus M.

    2004-12-01

    Selection of an optimal disassembly sequence is essential for the efficient processing of a product at the end of its life. Disassembly sequences are listings of disassembly actions (such as the separation of an assembly into two or more subassemblies, or removing one or more connections between components). Disassembly takes place in remanufacturing, recycling, and disposal with a disassembly line being the best choice for automation. In this paper, the disassembly sequencing problem is solved for a cell phone case on a disassembly line, seeking a sequence which is feasible, minimizes the number of workstations (and hence idle times), provides for early removal of high demand/value parts, provides the removal of parts that lead to the access of greatest number of still-installed parts, and early removal of hazardous parts as well as for the grouping of parts for removal having identical part removal directions. Since finding the optimal sequence is computationally intensive due to factorial growth, a heuristic method is used taking into account various disassembly-specific matters. Using the experimentally determined precedence relationships and task times of a real-world cell phone, a MATLAB program is designed and a sequencing solution is generated. Finally, Design for Disassembly (DFD) improvements are recommended with respect to environmentally conscious manufacturing.

  16. Graphics hardware accelerated panorama builder for mobile phones

    NASA Astrophysics Data System (ADS)

    Bordallo López, Miguel; Hannuksela, Jari; Silvén, Olli; Vehviläinen, Markku

    2009-02-01

    Modern mobile communication devices frequently contain built-in cameras allowing users to capture highresolution still images, but at the same time the imaging applications are facing both usability and throughput bottlenecks. The difficulties in taking ad hoc pictures of printed paper documents with multi-megapixel cellular phone cameras on a common business use case, illustrate these problems for anyone. The result can be examined only after several seconds, and is often blurry, so a new picture is needed, although the view-finder image had looked good. The process can be a frustrating one with waits and the user not being able to predict the quality beforehand. The problems can be traced to the processor speed and camera resolution mismatch, and application interactivity demands. In this context we analyze building mosaic images of printed documents from frames selected from VGA resolution (640x480 pixel) video. High interactivity is achieved by providing real-time feedback on the quality, while simultaneously guiding the user actions. The graphics processing unit of the mobile device can be used to speed up the reconstruction computations. To demonstrate the viability of the concept, we present an interactive document scanning application implemented on a Nokia N95 mobile phone.

  17. From mobile phone data to the spatial structure of cities

    PubMed Central

    Louail, Thomas; Lenormand, Maxime; Cantu Ros, Oliva G.; Picornell, Miguel; Herranz, Ricardo; Frias-Martinez, Enrique; Ramasco, José J.; Barthelemy, Marc

    2014-01-01

    Pervasive infrastructures, such as cell phone networks, enable to capture large amounts of human behavioral data but also provide information about the structure of cities and their dynamical properties. In this article, we focus on these last aspects by studying phone data recorded during 55 days in 31 Spanish cities. We first define an urban dilatation index which measures how the average distance between individuals evolves during the day, allowing us to highlight different types of city structure. We then focus on hotspots, the most crowded places in the city. We propose a parameter free method to detect them and to test the robustness of our results. The number of these hotspots scales sublinearly with the population size, a result in agreement with previous theoretical arguments and measures on employment datasets. We study the lifetime of these hotspots and show in particular that the hierarchy of permanent ones, which constitute the ‘heart' of the city, is very stable whatever the size of the city. The spatial structure of these hotspots is also of interest and allows us to distinguish different categories of cities, from monocentric and “segregated” where the spatial distribution is very dependent on land use, to polycentric where the spatial mixing between land uses is much more important. These results point towards the possibility of a new, quantitative classification of cities using high resolution spatio-temporal data. PMID:24923248

  18. Predicting Transitions in Oxygen Saturation Using Phone Sensors

    PubMed Central

    Cheng, Qian; Juen, Joshua; Hsu-Lumetta, Jennie

    2016-01-01

    Abstract Introduction: Widespread availability of mobile devices is revolutionizing health monitoring. Smartphones are ubiquitous, but it is unknown what vital signs can be monitored with medical quality. Oxygen saturation is a standard measure of health status. We have shown phone sensors can accurately measure walking patterns. Subjects and Methods: Twenty cardiopulmonary patients performed 6-min walk tests in pulmonary rehabilitation at a regional hospital. They wore pulse oximeters and carried smartphones running our MoveSense software, which continuously recorded saturation and motion. Continuous saturation defined categories corresponding to status levels, including transitions. Continuous motion was used to compute spatiotemporal gait parameters from sensor data. Our existing gait model was then trained with these data and used to predict transitions in oxygen saturation. For walking variation, 10-s windows are units for classifying into status categories. Results: Oxygen saturation clustered into three categories, corresponding to pulmonary function Global Initiative for Chronic Obstructive Lung Disease (GOLD) 1 and GOLD 2, with a Transition category where saturation varied around the mean rather than remaining steady with low standard deviation. This category indicates patients who are not clinically stable. The gait model predicted status during each measured window of free walking, with 100% accuracy for the 20 subjects, based on majority voting. Conclusions: Continuous recording of oxygen saturation can predict cardiopulmonary status, including patients in transition between status levels. Gait models using phone sensors can accurately predict these saturation categories from walking motion. This suggests medical devices for predicting clinical stability from passive monitoring using carried smartphones.

  19. Smartphones for Geological Data Collection- an Android Phone Application

    NASA Astrophysics Data System (ADS)

    Sun, F.; Weng, Y.; Grigsby, J. D.

    2010-12-01

    Recently, smartphones have attracted great attention in the wireless device market because of their powerful processors, ample memory capacity, advanced connectivity, and numerous utility programs. Considering the prominent new features a smartphone has, such as the large touch screen, speaker, microphone, camera, GPS receiver, accelerometer, and Internet connections, it can serve as a perfect digital aide for data recording on any geological field trip. We have designed and developed an application by using aforementioned features in an Android phone to provide functionalities used in field studies. For example, employing the accelerometer in the Android phone, the application turns the handset into a brunton-like device by which users can measure directions, strike and dip of a bedding plane or trend and plunge of a fold. Our application also includes functionalities of image taking, GPS coordinates tracking, videotaping, audio recording, and note writing. Data recorded from the application are tied together by the time log, which makes the task easy to track all data regarding a specific geologic object. The application pulls the GPS reading from the phone’s built-in GPS receiver and uses it as a spatial index to link up the other type of data, then maps them to the Google Maps/Earth for visualization. In this way, notes, pictures, audio or video recordings to depict the characteristics of the outcrops and their spatial relations, all can be well documented and organized in one handy gadget.

  20. Unveiling Spatial Epidemiology of HIV with Mobile Phone Data

    PubMed Central

    Brdar, Sanja; Gavrić, Katarina; Ćulibrk, Dubravko; Crnojević, Vladimir

    2016-01-01

    An increasing amount of geo-referenced mobile phone data enables the identification of behavioral patterns, habits and movements of people. With this data, we can extract the knowledge potentially useful for many applications including the one tackled in this study - understanding spatial variation of epidemics. We explored the datasets collected by a cell phone service provider and linked them to spatial HIV prevalence rates estimated from publicly available surveys. For that purpose, 224 features were extracted from mobility and connectivity traces and related to the level of HIV epidemic in 50 Ivory Coast departments. By means of regression models, we evaluated predictive ability of extracted features. Several models predicted HIV prevalence that are highly correlated (>0.7) with actual values. Through contribution analysis we identified key elements that correlate with the rate of infections and could serve as a proxy for epidemic monitoring. Our findings indicate that night connectivity and activity, spatial area covered by users and overall migrations are strongly linked to HIV. By visualizing the communication and mobility flows, we strived to explain the spatial structure of epidemics. We discovered that strong ties and hubs in communication and mobility align with HIV hot spots. PMID:26758042

  1. GSM mobile phone radiation suppresses brain glucose metabolism

    PubMed Central

    Kwon, Myoung Soo; Vorobyev, Victor; Kännälä, Sami; Laine, Matti; Rinne, Juha O; Toivonen, Tommi; Johansson, Jarkko; Teräs, Mika; Lindholm, Harri; Alanko, Tommi; Hämäläinen, Heikki

    2011-01-01

    We investigated the effects of mobile phone radiation on cerebral glucose metabolism using high-resolution positron emission tomography (PET) with the 18F-deoxyglucose (FDG) tracer. A long half-life (109 minutes) of the 18F isotope allowed a long, natural exposure condition outside the PET scanner. Thirteen young right-handed male subjects were exposed to a pulse-modulated 902.4 MHz Global System for Mobile Communications signal for 33 minutes, while performing a simple visual vigilance task. Temperature was also measured in the head region (forehead, eyes, cheeks, ear canals) during exposure. 18F-deoxyglucose PET images acquired after the exposure showed that relative cerebral metabolic rate of glucose was significantly reduced in the temporoparietal junction and anterior temporal lobe of the right hemisphere ipsilateral to the exposure. Temperature rise was also observed on the exposed side of the head, but the magnitude was very small. The exposure did not affect task performance (reaction time, error rate). Our results show that short-term mobile phone exposure can locally suppress brain energy metabolism in humans. PMID:21915135

  2. A Study on Iris Localization and Recognition on Mobile Phones

    NASA Astrophysics Data System (ADS)

    Park, Kang Ryoung; Park, Hyun-Ae; Kang, Byung Jun; Lee, Eui Chul; Jeong, Dae Sik

    2007-12-01

    A new iris recognition method for mobile phones based on corneal specular reflections (SRs) is discussed. We present the following three novelties over previous research. First, in case of user with glasses, many noncorneal SRs may happen on the surface of glasses and it is very difficult to detect genuine SR on the cornea. To overcome such problems, we propose a successive on/off dual illuminator scheme to detect genuine SRs on the corneas of users with glasses. Second, to detect SRs robustly, we estimated the size, shape, and brightness of the SRs based on eye, camera, and illuminator models. Third, the detected eye (iris) region was verified again using the AdaBoost eye detector. Experimental results with 400 face images captured from 100 persons with a mobile phone camera showed that the rate of correct iris detection was 99.5[InlineEquation not available: see fulltext.] (for images without glasses) and 98.9[InlineEquation not available: see fulltext.] (for images with glasses or contact lenses). The consequent accuracy of iris authentication was 0.05[InlineEquation not available: see fulltext.] of the EER (equal error rate) based on detected iris images.

  3. 47 CFR 64.710 - Operator services for prison inmate phones.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 3 2014-10-01 2014-10-01 false Operator services for prison inmate phones. 64.710 Section 64.710 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... services for prison inmate phones. (a) Each provider of inmate operator services shall: (1) Identify...

  4. 47 CFR 64.710 - Operator services for prison inmate phones.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 3 2011-10-01 2011-10-01 false Operator services for prison inmate phones. 64.710 Section 64.710 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... services for prison inmate phones. (a) Each provider of inmate operator services shall: (1) Identify...

  5. 47 CFR 14.61 - Obligations with respect to internet browsers built into mobile phones.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 1 2014-10-01 2014-10-01 false Obligations with respect to internet browsers built into mobile phones. 14.61 Section 14.61 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... internet browsers built into mobile phones. (a) Accessibility. If on or after October 8, 2013...

  6. Characteristics of Middle School Students Learning Actions in Outdoor Mathematical Activities with the Cellular Phone

    ERIC Educational Resources Information Center

    Daher, Wajeeh; Baya'a, Nimer

    2012-01-01

    Learning in the cellular phone environment enables utilizing the multiple functions of the cellular phone, such as mobility, availability, interactivity, verbal and voice communication, taking pictures or recording audio and video, measuring time and transferring information. These functions together with mathematics-designated cellular phone…

  7. 47 CFR 64.710 - Operator services for prison inmate phones.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Operator services for prison inmate phones. 64.710 Section 64.710 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... services for prison inmate phones. (a) Each provider of inmate operator services shall: (1) Identify...

  8. 47 CFR 64.710 - Operator services for prison inmate phones.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 3 2012-10-01 2012-10-01 false Operator services for prison inmate phones. 64.710 Section 64.710 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... services for prison inmate phones. (a) Each provider of inmate operator services shall: (1) Identify...

  9. 47 CFR 64.710 - Operator services for prison inmate phones.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 3 2013-10-01 2013-10-01 false Operator services for prison inmate phones. 64.710 Section 64.710 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... services for prison inmate phones. (a) Each provider of inmate operator services shall: (1) Identify...

  10. 47 CFR 14.61 - Obligations with respect to internet browsers built into mobile phones.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 1 2013-10-01 2013-10-01 false Obligations with respect to internet browsers built into mobile phones. 14.61 Section 14.61 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... internet browsers built into mobile phones. (a) Accessibility. If on or after October 8, 2013...

  11. The Use of Phone Technology in Outpatient Populations: A Systematic Review

    PubMed Central

    Duarte, Ana C.; Thomas, Sue A.

    2016-01-01

    Objective: A systematic review was conducted to identify the types of phone technology used in the adult outpatient population with a focus on Hispanic patients and psychiatric populations. Methods: A search for articles was conducted on the EMBASE, PubMed and PsycINFO databases. Articles reviewed were peer-reviewed, full-text, English language and published through mid-November 2014. Results: Twenty-one articles were included in this review and grouped according to combinations of phone technology, medical specialty area and population. For all articles, phone technology was defined as telephone, cell, or smart phone. Technology was used in psychiatry with Hispanic population in four articles, in psychiatry with non-Hispanic population in seven articles and in other specialties with Hispanic population in ten articles. Articles were evaluated for quality. Six articles were assessed as strong, eight were moderate and seven were weak in global quality. Interventions included direct communication, text messaging, interactive voice response, camera and smart phone app. Studies with Hispanic populations used more text messaging, while studies in psychiatry favored direct communication. The majority of articles in all groups yielded improvements in health outcomes. Conclusion: Few studies have been conducted using phone technology in Hispanic and psychiatric populations. Various phone technologies can be helpful to patients in diverse populations and have demonstrated success in improving a variety of specific and overall healthcare outcomes. Phone technologies are easily adapted to numerous settings and populations and are valuable tools in efforts to increase access to care. PMID:27347255

  12. GIS Data Collection for Oil Palm (DaCOP) Mobile Application for Smart Phone

    NASA Astrophysics Data System (ADS)

    Abdullah, A. F.; Muhadi, N. A.

    2015-10-01

    Nowadays, smart phone has become a necessity as it offers more than just making a phone call. Smart phone combines the features of cell phone with other mobile devices such as personal digital assistant (PDA) and GPS navigation unit that propel the popularity of smart phones. In recent years, the interest in mobile communication has been increased. Previous research using mobile application has been successfully done in varies areas of study. Areas of study that have been done are health care, education, and traffic monitoring. Besides, mobile application has also been applied in agricultural sector for various purposes such as plant pest risk management. In this study, mobile application for data collection on Ganoderma disease of oil palm has been successfully developed. The application uses several devices in a smart phone such as GPS, Wifi/ GPRS connection and accelerometer devices. The application can be installed in the smart phone and users can use the application while working on-site. The data can be updated immediately through their smart phones to the service. Besides, the application provides offline map so the user can be productive even though their network connectivity is poor or nonexistent. The data can be synced when the users online again. This paper presents an application that allows users to download features from a sync-enabled ArcGIS Feature Service, view and edit the features even when the devices fail to connect with any network connectivity while collecting data on-site.

  13. Anytime, Anywhere Learning Supported by Smart Phones: Experiences and Results from the MUSIS Project

    ERIC Educational Resources Information Center

    Milrad, Marcelo; Spikol, Daniel

    2007-01-01

    In this paper we report the results of our on-going activities regarding the use of smart phones and mobile services in university classrooms. The purpose of these trials was to explore and identify which content and services could be delivered to the smart phones in order to support learning and communication in the context of university studies.…

  14. Tools for School: Student Fluency and Perception of Cell Phones Used for Learning

    ERIC Educational Resources Information Center

    Humble-Thaden, Mary Beth

    2012-01-01

    Technology is changing the way society interacts, communicates, collaborates, and learns. Improved cell phone capabilities and an ever increasing amount of cell phone applications allow individuals to connect globally and afford almost instantaneous access to information inside and outside the classroom. The majority of students today possesses…

  15. The Educative Potential of Cell Phones in the Social Studies Classroom

    ERIC Educational Resources Information Center

    Maguth, Brad M.

    2013-01-01

    Over 75 percent of teens have a cell phone, and today's youth are increasingly turning to their cell phones to communicate and access information (Pew Internet 2009). As teens gain access and use mobile devices outside of the classroom, there's been a growing movement for teachers to enlist the digital tools students really use and are…

  16. Modern Educational Technology: Educational Usages of Cell Phone as Perceived by Students of Education Faculties

    ERIC Educational Resources Information Center

    Harba, Ali Moneer

    2012-01-01

    This study investigated the educational use of cell phones at two Syrian education establishments. The research sample consisted of (n = 184) students from the Department of Teacher Education at Tishreen and Damascus Universities. During the study, students filled in a self-report 17-item questionnaire. Survey results imply that cell phone use…

  17. Over-Connected? A Qualitative Exploration of the Relationship between Australian Youth and Their Mobile Phones

    ERIC Educational Resources Information Center

    Walsh, Shari P.; White, Katherine M.; Young, Ross M.

    2008-01-01

    In Australia, youth are the most prolific users of mobile phones, however, there is little research investigating this phenomenon. This paper reports a qualitative exploration of psychological factors relating to mobile phone use amongst Australian youth. 32 participants, aged between 16 and 24 years, took part in focus group discussions. Thematic…

  18. Skin temperature increase caused by a mobile phone: a methodological infrared camera study.

    PubMed

    Straume, Aksel; Oftedal, Gunnhild; Johnsson, Anders

    2005-09-01

    Mobile phone users often complain about burning sensations or a heating of the ear region. The increase in temperature may be due to thermal insulation by the phone, heating of the mobile phone resulting from its electrical power dissipation, and radio frequency (RF) exposure. The main objective of this study was to use infrared (IR) camera techniques to find how much each of these factors contributes to the increase in skin temperature resulting from the use of one GSM 900 phone. One subject, a healthy male, took part in the study. He was holding the phone in a normal position when the phone was switched off, when it was switched on but with the antenna replaced by a 50 Omega load to eliminate the RF exposure, and when it was transmitting RF fields. The output power could be fixed, and the minimal and the maximal power levels of the phone were used. The study was designed as a double blind experiment. The changes in temperature after 15 and 30 min of mobile phone use were calculated on the exposed side of the head relative to the unexposed side. The insulation and the electrical power dissipation led to statistically significant rises in the skin temperature, while the RF exposure did not.

  19. Mobile Phones as a Potential Vehicle of Infection in a Hospital Setting.

    PubMed

    Chao Foong, Yi; Green, Mark; Zargari, Ahmad; Siddique, Romana; Tan, Vanessa; Brain, Terry; Ogden, Kathryn

    2015-01-01

    The objective of this article is to investigate the potential role of mobile phones as a reservoir for bacterial colonization and the risk factors for bacterial colonization in a hospital setting. We screened 226 staff members at a regional Australian hospital (146 doctors and 80 medical students) between January 2013 and March 2014. The main outcomes of interest were the types of microorganisms and the amount of contamination of the mobile phones. This study found a high level of bacterial contamination (n = 168/226, 74%) on the mobile phones of staff members in a tertiary hospital, with similar organisms isolated from the staff member's dominant hand and mobile phones. While most of the isolated organisms were normal skin flora, a small percentage were potentially pathogenic (n = 12/226, 5%). Being a junior medical staff was found to be a risk factor for heavy microbial growth (OR 4.00, 95% CI 1.54, 10.37). Only 31% (70/226) of our participants reported cleaning their phones routinely, and only 21% (47/226) reported using alcohol containing wipes on their phones. This study demonstrates that mobile phones are potentially vehicles for pathogenic bacteria in a hospital setting. Only a minority of our participants reported cleaning their phones routinely. Disinfection guidelines utilizing alcohol wipes should be developed and implemented.

  20. Same Setting, Different Norms: Phone Call Beginnings in France and the United States

    ERIC Educational Resources Information Center

    Godard, Daniele

    1977-01-01

    French native speakers' reactions to phone calls in the United States indicate a difference in the norms of interaction between the two countries. This difference, in turn, is understood when one realizes that the phone call, constituting a speech event, is open to different cultural interpretations. (CHK)

  1. Analysis of mobile phone use among young patients with brain tumors in Japan.

    PubMed

    Sato, Yasuto; Kojimahara, Noriko; Yamaguchi, Naohito

    2017-03-24

    The purpose of this study was to clarify ownership and usage of mobile phones among young patients with brain tumors in Japan. The subjects of this study were patients with brain tumors diagnosed between 2006 and 2010 who were between the ages of 6 and 18 years. The target population for the analysis was 82 patients. Patients were divided into two groups: 16 patients who were mobile phone owners 1 year before diagnosis, and 66 patients who did not own mobile phones (non-owners). Using data on the mobile phone ownership rate obtained from three general-population surveys, we calculated the expected number of mobile phone owners. The three age-adjusted standardized ownership ratios were 0.83 (95% confidence interval [CI]: 0.56-1.22), 0.51 (95% CI: 0.24-1.04), and 0.75 (95% CI: 0.42-1.32). The mobile phone ownership prevalence among the young Japanese patients with brain tumors in the current study does not differ from available estimates for the general population of corresponding age. However, since the use of mobile phones among children is increasing annually, investigations into the health effects of mobile phone use among children should continue. Bioelectromagnetics. © 2017 Wiley Periodicals, Inc.

  2. Opinions and Attitudes of Prospective Teachers for the Use of Mobile Phones in Foreign Language Learning

    ERIC Educational Resources Information Center

    Çakir, Ismail

    2015-01-01

    The aim of this study is to explore the current use of mobile phones in a foreign language teaching context where English is used as the medium of instruction by prospective teachers. To this end, it presents the views of prospective English teachers on utilizing the mobile phone as an instructional tool for foreign language learning purposes in…

  3. East vs. West: A Comparison of Mobile Phone Use by Chinese and American College Students

    ERIC Educational Resources Information Center

    Rosehfeld, Barbara; O'Connor-Petruso, Sharon A.

    2014-01-01

    Mobile phones are used around the world, however, there are no definitive rules regarding their appropriate use. In the absence of such codification, the researchers surveyed 225 American and 115 Chinese college students to understand their perceptions of etiquette and appropriate use of mobile phones both in the classroom and in other public…

  4. The situation of waste mobile phone management in developed countries and development status in China.

    PubMed

    Xu, Chengjian; Zhang, Wenxuan; He, Wenzhi; Li, Guangming; Huang, Juwen

    2016-12-01

    With the rapid development of electronic industry and improvement of living standards, a large number of waste mobile phones were generated. According to statistics, approximately 400million waste mobile phones are generated each year in the world, and 25% of that are contributed by China. Irregular disposal of waste mobile phones will do great harm to environment and human health, while at the same time recycling of them has the potential for high profits. Given the enormous quantity, great harm and resource properties, developed countries have taken necessary measures to manage waste mobile phones. As the largest developing country, China has also set out to pay close attention to waste mobile phones. This paper reviewed the situation ofwaste mobile phone management in the developed countries, focused on the development of waste mobile phone management in China, and analyzed existing problems. In light of the successful experience of the developed countries, some suggestions were proposed to promote the waste mobile phone management in China and worked as a valuable reference for other countries.

  5. Using Mobile Phones to Promote Lifelong Learning among Rural Women in Southern India

    ERIC Educational Resources Information Center

    Balasubramanian, K.; Thamizoli, P.; Umar, Abdurrahman; Kanwar, Asha

    2010-01-01

    This article is an attempt to study the role of mobile phones in the non-formal and informal context among rural women from resource poor communities. In particular, it focuses on the women's control over the mobile phone as a learning tool through the domestication of technologies. The distance learning, gender dimensions, and use of technologies…

  6. Are You Still with Us? Managing Mobile Phone Use and Group Interaction in PBL

    ERIC Educational Resources Information Center

    Hendry, Gillian; Wiggins, Sally; Anderson, Tony

    2016-01-01

    As mobile phone technology becomes more advanced, so too does its presence in everyday life. Research has shown, for instance, that students are using their mobile phones in classroom settings, a practice that holds both potential advantages and disadvantages. In group work, these interactions may have consequences for group dynamics in that…

  7. Effect of Use of Mobile Phone on Mental Health of Higher Secondary School Students

    ERIC Educational Resources Information Center

    Anboucarassy, B.; Begum, Mumtaz

    2014-01-01

    The world of today is shrinking due to globalization as many scientific and technological development has stepped in all fields. Nowadays, the mobile phone is widely used as a means of communication. Mobile phones are a fully-portable medium of electronic communication which enables the transmission of information in the form of sound, text or…

  8. EEG Changes Due to Experimentally Induced 3G Mobile Phone Radiation.

    PubMed

    Roggeveen, Suzanne; van Os, Jim; Viechtbauer, Wolfgang; Lousberg, Richel

    2015-01-01

    The aim of this study was to investigate whether a 15-minute placement of a 3G dialing mobile phone causes direct changes in EEG activity compared to the placement of a sham phone. Furthermore, it was investigated whether placement of the mobile phone on the ear or the heart would result in different outcomes. Thirty-one healthy females participated. All subjects were measured twice: on one of the two days the mobile phone was attached to the ear, the other day to the chest. In this single-blind, cross-over design, assessments in the sham phone condition were conducted directly preceding and following the mobile phone exposure. During each assessment, EEG activity and radiofrequency radiation were recorded jointly. Delta, theta, alpha, slowbeta, fastbeta, and gamma activity was computed. The association between radiation exposure and the EEG was tested using multilevel random regression analyses with radiation as predictor of main interest. Significant radiation effects were found for the alpha, slowbeta, fastbeta, and gamma bands. When analyzed separately, ear location of the phone was associated with significant results, while chest placement was not. The results support the notion that EEG alterations are associated with mobile phone usage and that the effect is dependent on site of placement. Further studies are required to demonstrate the physiological relevance of these findings.

  9. [Psychophysiological indicators for children using mobile phones. Communication 1. Current state of the problem].

    PubMed

    Khorseva, N I; Grigor'ev, Iu G; Gorbunova, N V

    2011-01-01

    An overview of the epidemiological and experimental evidence for exposure of humans and animals to electromagnetic radiation produced by mobile phones is provided. The effects of mobile phone radiation on the child's body are considered in detail. It has been shown that the children's organism is more sensitive to this kind of exposure than the adult one.

  10. A Study in Kuwait of Health Risks Associated with Using Cell Phones

    ERIC Educational Resources Information Center

    Al-Khamees, Nedaa

    2007-01-01

    Previous studies have suggested a link between cell phone use and various symptoms. Analysis of 3,274 completed questionnaires from throughout Kuwait show a significant effect of exposure to cell phones for burning sensation on the ear, temporal pain, pain in the back of the head, auricular pain, noises in the ear, ear numbness, heartbeat…

  11. The impact of legislation in Ireland on handheld mobile phone use by drivers.

    PubMed

    O'Meara, M; Bedford, D; Finnegan, P; Howell, F; Murray, C

    2008-01-01

    Under the Road Traffic Act, 2006 handheld mobile phone use whilst driving is an offence liable to a fine and penalty points. The aim of this study was to determine whether there has been a change in driver behaviour following the introduction of this legislation. This study found that 2.3% of drivers were still using a handheld mobile phone.

  12. Factors associated with cell phone use in adolescents in the community of Madrid (Spain).

    PubMed

    Sánchez-Martínez, Mercedes; Otero, Angel

    2009-04-01

    The purpose of this research is to measure cell phone use among high school adolescents and the factors associated with intensive cell phone use (depressive symptoms, social isolation, drug and alcohol use, school failure, and cell phone dependence). We conducted a cross-sectional survey study of 1,328 adolescents aged 13 to 20 years in nine secondary schools of the Community of Madrid between January to April 2007. The mean age of sample participants was 15.7 years. Almost all (96.5%) had their own cell phone (80.5% had one, and 15.9% had two or more). Some 54.8% take it to school and 46.1% keep it on during class; 41.7% use it intensively. The estimated prevalence of cell phone dependence was 20% (26.1% in females, 13% in males). Intensive cell phone use was associated with female sex, rural school location, good family economy, smoking tobacco, excessive alcohol consumption, depression, cell phone dependence, and school failure. More health education is needed to promote correct and effective cell phone use among adolescents. Factors associated with intensive use and dependence should be considered for possible intervention activities.

  13. A simple demonstration for exploring the radio waves generated by a mobile phone

    NASA Astrophysics Data System (ADS)

    Hare, Jonathan

    2010-09-01

    Described is a simple low cost home-made device that converts the radio wave energy from a mobile phone signal into electricity for lighting an LED. No battery or complex circuitry is required. The device can form the basis of a range of interesting experiments on the physics and technology of mobile phones.

  14. Magnetogate: Using an iPhone Magnetometer for Measuring Kinematic Variables

    ERIC Educational Resources Information Center

    Temiz, Burak Kagan; Yavuz, Ahmet

    2016-01-01

    This paper presents a method to measure the movement of an object from specific locations on a straight line using an iPhone's magnetometer. In this method, called "magnetogate," an iPhone is placed on a moving object (in this case a toy car) and small neodymium magnets are arranged at equal intervals on one side of a straight line. The…

  15. 75 FR 4583 - In the Matter of: Certain Electronic Devices, Including Mobile Phones, Portable Music Players...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-28

    ... COMMISSION In the Matter of: Certain Electronic Devices, Including Mobile Phones, Portable Music Players, and... electronic devices, including mobile phones, portable music players, and computers, by reason of infringement... electronic docket (EDIS) at http://edis.usitc.gov . FOR FURTHER INFORMATION CONTACT: Rett Snotherly,...

  16. Cell Phone Usage among Adolescents in Uganda: Acceptability for Relaying Health Information

    ERIC Educational Resources Information Center

    Mitchell, Kimberly J.; Bull, Sheana; Kiwanuka, Julius; Ybarra, Michele L.

    2011-01-01

    The increase in cell phone use has manifested a growing interest in using this technology for health promotion. The portability and "always on" features of the cell phone, along with increasing capability for the devices to carry and transfer data suggest that they will reach more people than computers and the Internet in coming years.…

  17. Tele-EnREDando.com: A Multimedia WEB-CALL Software for Mobile Phones.

    ERIC Educational Resources Information Center

    Garcia, Jose Carlos

    2002-01-01

    Presents one of the world's first prototypes of language learning software for smart-phones. Tele-EnREDando.com is an Internet based multimedia application designed for 3G mobile phones with audio, video, and interactive exercises for learning Spanish for business. (Author/VWL)

  18. Comparing Three Methods to Create Multilingual Phone Models for Vocabulary Independent Speech Recognition Tasks

    DTIC Science & Technology

    2000-08-01

    Glass, et al.: Multilingual Spoken Language Under- ( multilingual clusters) and 5280 monolingual clusters. This standing in the MIT VOYAGER System...UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADP010392 TITLE: Comparing Three Methods to Create Multilingual Phone...METHODS TO CREATE MULTILINGUAL PHONE MODELS FOR VOCABULARY INDEPENDENT SPEECH RECOGNITION TASKS Joachim Kdhler German National Research Center for

  19. A Simple Demonstration for Exploring the Radio Waves Generated by a Mobile Phone

    ERIC Educational Resources Information Center

    Hare, Jonathan

    2010-01-01

    Described is a simple low cost home-made device that converts the radio wave energy from a mobile phone signal into electricity for lighting an LED. No battery or complex circuitry is required. The device can form the basis of a range of interesting experiments on the physics and technology of mobile phones. (Contains 5 figures.)

  20. Essays on the Economic Impacts of Mobile Phones in Sub-Saharan Africa

    ERIC Educational Resources Information Center

    Blumenstock, Joshua Evan

    2012-01-01

    As mobile phones reach the remote corners of the world, they bring with them a sense of great optimism. Hailed as a technology that "can transform the lives of the people who are able to access them," mobile phones have the potential to play a positive role in the lives of many of the world's poor. Such claims are often reported…

  1. Study on mobile phone use while driving in a sample of Iranian drivers.

    PubMed

    Arvin, Ramin; Khademi, Mostafa; Razi-Ardakani, Hesamoddin

    2016-05-16

    The use of cell phone is a significant source of driver distraction. Phone use while driving can impair a number of factors critical for safe driving which can cause serious traffic safety problems. The objective of this paper was to investigate the frequency of using cell phones while driving in Iran's roads through an observational survey with a random sample of drivers, to recognize contributing factors to cell phone usage and to understand the magnitude of the problem. A total of 1794 observations were collected from 12 sites at controlled intersections, entrance and exit points of highways. The cell phone use rate among drivers (talking or texting) was estimated at 10% which is significantly higher than that in other countries such as Australia, USA and Canada. Rate of cell phone use among younger drivers (14.15%) was higher in comparison with other groups. In order to identify factors affecting cell phone use while driving, a binary logit model is estimated. Variables which significantly contribute to the rate of using cell phone were found to be the age of driver, number of passengers, presence of kids under the age of 8, time of observation, vehicle price and type of car.

  2. Mobile Phones for Teaching and Learning: Implementation and Students' and Teachers' Attitudes

    ERIC Educational Resources Information Center

    AlTameemy, Farooq

    2017-01-01

    Mobile phones have become so ubiquitous that they turned into an important part of our life. According to Parsons, mobile subscriptions exceed 6 billion subscriptions globally. Similarly, Ipsos and Verizon (as cited in Tan & El-Bendary) found out that adopting mobile phones with smart technologies has increased fast which also coincided with a…

  3. Students' Dependence on Smart Phones: The Influence of Social Needs, Social Influences and Convenience

    ERIC Educational Resources Information Center

    Suki, Norazah Mohd

    2013-01-01

    Purpose: The purpose of this paper is to assess whether social needs, social influences and convenience of smart phones affects students' dependence on them. This research also examines whether students' dependence on smart phones influences their purchase behaviour. This investigation is conducted among the students in a public university in the…

  4. Usability of Mobile Phones in Physical Activity-Rrelated Research: A Systematic Review

    ERIC Educational Resources Information Center

    Monroe, Courtney M.; Thompson, Dixie L.; Bassett, David R., Jr.; Fitzhugh, Eugene C.; Raynor, Hollie A.

    2015-01-01

    Background: The use of mobile phones for physical activity (PA) promotion and assessment represents an attractive research area because this technology is characterized by a widespread reach and dynamic features. Purpose: The purpose of this study was to conduct a systematic review of mobile phone-based approaches for encouraging and assessing PA.…

  5. College Students Use Cell Phones while Driving More Frequently than Found in Government Study

    ERIC Educational Resources Information Center

    Cramer, Sheryl; Mayer, Joni; Ryan, Sherry

    2007-01-01

    Objective: Cell phone use while driving is hazardous; it quadruples the risk of a collision and multiplies the risk of a fatality nine-fold. The National Highway Traffic Safety Administration estimates that 8% of young drivers and 5% of all drivers use cell phones while driving. Participants and Methods: The authors trained graduate student…

  6. Active Prompting to Decrease Cell Phone Use and Increase Seat Belt Use while Driving

    ERIC Educational Resources Information Center

    Clayton, Michael; Helms, Bridgett; Simpson, Cathy

    2006-01-01

    Automobile crashes are the leading cause of death for those aged 3 to 33, with 43,005 (118 per day) Americans killed in 2002 alone. Seat belt use reduces the risk of serious injury in an accident, and refraining from using a cell phone while driving reduces the risk of an accident. Cell phone use while driving increases accident rates, and leads…

  7. Patient-initiated camera phone images in general practice: a qualitative study of illustrated narratives

    PubMed Central

    Tan, Lawrence; Hu, Wendy; Brooker, Ron

    2014-01-01

    Background Camera phones have become ubiquitous in the digital age. Patients are beginning to bring images recorded on their mobile phones to share with their GP during medical consultations. Aim To explore GP perceptions about the effect of patient-initiated camera phone images on the consultation. Design and setting An interview study of GPs based in rural and urban locations in Australia. Methods Semi-structured telephone interviews with nine GPs about their experiences with patient-initiated camera phone images. Results GPs described how patient-initiated camera phone photos and videos contributed to the diagnostic process, management and continuity of care. These images gave GPs in the study additional insight into the patient’s world. Potential harm resulting from inappropriate use of camera phones by patients was also identified. Conclusion Patient-initiated camera phone images can empower patients by illustrating their narratives, thus contributing to improved communication in general practice. Potential harm could result from inappropriate use of these images. GPs shown images on patients’ camera phones should make the most of this opportunity for improved understanding of the patient’s world. There are however, potential medicolegal implications such as informed consent, protection of patient and doctor privacy, and the risk of misdiagnosis. PMID:24771843

  8. Profiles in driver distraction: effects of cell phone conversations on younger and older drivers.

    PubMed

    Strayer, David L; Drews, Frank A

    2004-01-01

    Our research examined the effects of hands-free cell phone conversations on simulated driving. We found that driving performance of both younger and older adults was influenced by cell phone conversations. Compared with single-task (i.e., driving-only) conditions, when drivers used cell phones their reactions were 18% slower, their following distance was 12% greater, and they took 17% longer to recover the speed that was lost following braking. There was also a twofold increase in the number of rear-end collisions when drivers were conversing on a cell phone. These cell-phone-induced effects were equivalent for younger and older adults, suggesting that older adults do not suffer a significantly greater penalty for talking on a cell phone while driving than compared with their younger counterparts. Interestingly, the net effect of having younger drivers converse on a cell phone was to make their average reactions equivalent to those of older drivers who were not using a cell phone. Actual or potential applications of this research include providing guidance for recommendations and regulations concerning the use of mobile technology while driving.

  9. Daily Emotional Dynamics in Depressed Youth: A Cell Phone Ecological Momentary Assessment Study

    ERIC Educational Resources Information Center

    Silk, Jennifer S.; Forbes, Erika E.; Whalen, Diana J.; Jakubcak, Jennifer L.; Thompson, Wesley K.; Ryan, Neal D.; Axelson, David A.; Birmaher, Boris; Dahl, Ronald E.

    2011-01-01

    This study used a new cell phone ecological momentary assessment approach to investigate daily emotional dynamics in 47 youths with major depressive disorder (MDD) and 32 no-psychopathology controls (CON) (ages 7-17 years). Information about emotional experience in the natural environment was obtained using answer-only cell phones, while MDD…

  10. Cell Phones in the Classroom: Don't Put Them Away Just Yet!

    ERIC Educational Resources Information Center

    Webb, Carolyn Lorraine

    2013-01-01

    As the number of students with cell phones has steadily increased over the past decade, these technological advances have caused trepidation among educators over behavioral issues, from off-task activities to cheating (Prensky, 2005). On the other hand, mobile learning, as well as some tools to use with cell phones, are easy to set up, easy to…

  11. Cellular Phone Use in Class: Implications for Teaching and Learning a Pilot Study

    ERIC Educational Resources Information Center

    Burns, Shari M.; Lohenry, Kevin

    2010-01-01

    Students equipped with the cell phones enter college classrooms daily. Realizing the impact of technology on fellow learners and faculty represents an area of concern. A pilot study was conducted to determine student and faculty perception regarding cellular phone use in the classroom. A quantitative descriptive study examined the perception of…

  12. Teachers' Stances on Cell Phones in the ESL Classroom: Toward a "Theoretical" Framework

    ERIC Educational Resources Information Center

    Brown, Jeff

    2014-01-01

    In the ongoing and constantly expanding discussion surrounding cell phones in the classroom, a theoretical complement to the practical side of the issue is generally lacking. This is perhaps understandable. Many teachers are still trying to deal with the simple presence of cell phones in the class, and managing a classroom in which the presence…

  13. Distribution of RF energy emitted by mobile phones in anatomical structures of the brain.

    PubMed

    Cardis, E; Deltour, I; Mann, S; Moissonnier, M; Taki, M; Varsier, N; Wake, K; Wiart, J

    2008-06-07

    The rapid worldwide increase in mobile phone use in the last decade has generated considerable interest in possible carcinogenic effects of radio frequency (RF). Because exposure to RF from phones is localized, if a risk exists it is likely to be greatest for tumours in regions with greatest energy absorption. The objective of the current paper was to characterize the spatial distribution of RF energy in the brain, using results of measurements made in two laboratories on 110 phones used in Europe or Japan. Most (97-99% depending on frequency) appears to be absorbed in the brain hemisphere on the side where the phone is used, mainly (50-60%) in the temporal lobe. The average relative SAR is highest in the temporal lobe (6-15%, depending on frequency, of the spatial peak SAR in the most exposed region of the brain) and the cerebellum (2-10%) and decreases very rapidly with increasing depth, particularly at higher frequencies. The SAR distribution appears to be fairly similar across phone models, between older and newer phones and between phones with different antenna types and positions. Analyses of risk by location of tumour are therefore important for the interpretation of results of studies of brain tumours in relation to mobile phone use.

  14. Cell phone radiation effects on cytogenetic abnormalities of oral mucosal cells.

    PubMed

    Daroit, Natália Batista; Visioli, Fernanda; Magnusson, Alessandra Selinger; Vieira, Geila Radunz; Rados, Pantelis Varvaki

    2015-01-01

    The aim of this study was to evaluate the effects of exposure to cell phone electromagnetic radiation on the frequency of micronuclei, broken eggs cells, binucleated cells, and karyorrhexis in epithelial cells of the oral mucosa. The sample was composed of 60 cell phone users, who were non-smokers and non-drinkers, and had no clinically visible oral lesions. Cells were obtained from anatomical sites with the highest incidence of oral cancer: lower lip, border of the tongue, and floor of the mouth. The Feulgen reaction was used for quantification of nuclear anomalies in 1,000 cells/slide. A slightly increase in the number of micronucleated cells in the lower lip and in binucleated cells on the floor of the mouth was observed in individuals who used their phones > 60 minutes/week. The analysis also revealed an increased number of broken eggs in the tongue of individuals owning a cell phone for over eight years. Results suggest that exposure to electromagnetic waves emitted by cell phones can increase nuclear abnormalities in individuals who use a cell phone for more than 60 minutes per week and for over eight years. Based on the present findings, we suggest that exposure to electromagnetic radiation emitted by cell phones may interfere with the development of metanuclear anomalies. Therefore, it is demonstrated that, despite a significant increase in these anomalies, the radiation emitted by cell phones among frequent users is within acceptable physiological limits.

  15. "MXing It up": How African Adolescents May Affect Social Change through Mobile Phone Use

    ERIC Educational Resources Information Center

    Napolitano, Christopher M.

    2010-01-01

    This chapter outlines mobile phone use among African (particularly South African) adolescents. With an estimated 350 million active mobile phone subscriptions, improving network infrastructure, low-cost Internet-ready handsets, innovative programs and applications, mobiles in Africa, and their increasingly younger, increasingly poorer, and…

  16. Texting Capital: Mobile Phones, Social Transformation, and the Reproduction of Power in the Philippines

    ERIC Educational Resources Information Center

    Uy-Tioco, Cecilia S.

    2013-01-01

    The mobile phone has arguably become the most ubiquitous information communication technology (ICT) in the world, including in the developing world. Introduced in the Philippines in the early 1990s, mobile phone penetration is expected to reach 100 percent in 2013, an interesting phenomenon since a third of the country lives below the poverty…

  17. EEG Changes Due to Experimentally Induced 3G Mobile Phone Radiation

    PubMed Central

    Roggeveen, Suzanne; van Os, Jim; Viechtbauer, Wolfgang; Lousberg, Richel

    2015-01-01

    The aim of this study was to investigate whether a 15-minute placement of a 3G dialing mobile phone causes direct changes in EEG activity compared to the placement of a sham phone. Furthermore, it was investigated whether placement of the mobile phone on the ear or the heart would result in different outcomes. Thirty-one healthy females participated. All subjects were measured twice: on one of the two days the mobile phone was attached to the ear, the other day to the chest. In this single-blind, cross-over design, assessments in the sham phone condition were conducted directly preceding and following the mobile phone exposure. During each assessment, EEG activity and radiofrequency radiation were recorded jointly. Delta, theta, alpha, slowbeta, fastbeta, and gamma activity was computed. The association between radiation exposure and the EEG was tested using multilevel random regression analyses with radiation as predictor of main interest. Significant radiation effects were found for the alpha, slowbeta, fastbeta, and gamma bands. When analyzed separately, ear location of the phone was associated with significant results, while chest placement was not. The results support the notion that EEG alterations are associated with mobile phone usage and that the effect is dependent on site of placement. Further studies are required to demonstrate the physiological relevance of these findings. PMID:26053854

  18. 77 FR 24514 - Certain Consumer Electronics, Including Mobile Phones and Tablets; Institution of Investigation...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-24

    ... COMMISSION Certain Consumer Electronics, Including Mobile Phones and Tablets; Institution of Investigation... consumer electronics, including mobile phones and tablets, by reason of infringement of certain claims of U... importation, or the sale within the United States after importation of certain consumer electronics,...

  19. Effect of Prolonged Use of Mobile Phone on Brainstem Auditory Evoked Potentials

    PubMed Central

    Goyal, Darshan; Sharma, Rajiv; Arora, Khushdeep Singh

    2015-01-01

    Objectives Mobile phones are being widely used throughout the world. Electromagnetic waves generated from mobile phones have raised concerns as these may have adverse effects on human auditory system owing to the daily use of mobile phones. The purpose of current study was to evaluate the effects of long term mobile phone usage on auditory brainstem evoked responses (ABR). Materials and Methods A retrospective, cross-sectional, case control study was carried out in a tertiary care hospital. Total 100 healthy subjects aged 18 to 30 years of both the genders were selected, out of which 67 subjects were long-term GSM mobile phone users (using mobile phone for more than 1 year) and 33 were controls who were mobile phone non users. Both the groups were investigated for ABR and changes were studied in both the ears of cases and controls to ascertain the effects of electromagnetic exposure. Results No significant difference (p>0.05) was found in latencies, interpeak latencies and amplitudes of ABR waves between cases and controls. Conclusion Our study shows that long term usage of mobile phones does not affect propagation of electrical stimuli along the auditory nerve to auditory brainstem centres. PMID:26155473

  20. Call Home? Mobile Phones and Contacts with Mother in 24 Countries.

    PubMed

    Gubernskaya, Zoya; Treas, Judith

    2016-10-01

    This paper explores how the diffusion of mobile phones is associated with communication between adult children and their mothers. The paper analyzes 2001 International Social Survey Program (ISSP) data from 24 countries (N = 12,313) combined with the country-level data on the prevalence of mobile phones. Net of individual-level predictors and country wealth, adult children who resided in countries with high prevalence of mobile phones contacted their mothers more frequently. High prevalence of mobile phones was also associated with larger differences in maternal contact by gender and smaller differences by education. These findings suggest that any impact of new communication technology on intergenerational relations is complex. Although mobile phones point to higher levels of at-a-distance contact with mothers and narrower socio-economic disparities related to access and affordability of communication technology, they are also linked to wider contact disparities following gendered cultural expectations.