26 CFR 52.4682-3 - Imported taxable products.
Code of Federal Regulations, 2012 CFR
2012-04-01
....4681-1(c)(5)) of VCRs. The HTS classification for the VCRs is 8528.10.40. VCRs classified under HTS... reference to the Table. The Table ODC weight specified for VCRs classified under HTS heading 8528.10.40 is 0... of nonmechanical amplification or switching devices such as tubes, transistors, and integrated...
26 CFR 52.4682-3 - Imported taxable products.
Code of Federal Regulations, 2014 CFR
2014-04-01
....4681-1(c)(5)) of VCRs. The HTS classification for the VCRs is 8528.10.40. VCRs classified under HTS... reference to the Table. The Table ODC weight specified for VCRs classified under HTS heading 8528.10.40 is 0... of nonmechanical amplification or switching devices such as tubes, transistors, and integrated...
Centralized Oversight of Physician–Scientist Faculty Development at Vanderbilt: Early Outcomes
Brown, Abigail M.; Morrow, Jason D.; Limbird, Lee E.; Byrne, Daniel W.; Gabbe, Steven G.; Balser, Jeffrey R.; Brown, Nancy J.
2013-01-01
Purpose In 2000, faced with a national concern over the decreasing number of physician–scientists, Vanderbilt School of Medicine established the institutionally funded Vanderbilt Physician–Scientist Development (VPSD) program to provide centralized oversight and financial support for physician–scientist career development. In 2002, Vanderbilt developed the National Institutes of Health (NIH)-funded Vanderbilt Clinical Research Scholars (VCRS) program using a similar model of centralized oversight. The authors evaluate the impact of the VPSD and VCRS programs on early career outcomes of physician–scientists. Method Physician–scientists who entered the VPSD or VCRS programs from 2000 through 2006 were compared with Vanderbilt physician–scientists who received NIH career development funding during the same period without participating in the VPSD or VCRS programs. Results Seventy-five percent of VPSD and 60% of VCRS participants achieved individual career award funding at a younger age than the comparison cohort. This shift to career development award funding at a younger age among VPSD and VCRS scholars was accompanied by a 2.6-fold increase in the number of new K awards funded and a rate of growth in K-award dollars at Vanderbilt that outpaced the national rate of growth in K-award funding. Conclusions Analysis of the early outcomes of the VPSD and VCRS programs suggests that centralized oversight can catalyze growth in the number of funded physician–scientists at an institution. Investment in this model of career development for physician–scientists may have had an additive effect on the recruitment and retention of talented trainees and junior faculty. PMID:18820531
VCR Use and the Concept of Audience Activity.
ERIC Educational Resources Information Center
Levy, Mark R.
1987-01-01
Examines the audience experience with home video cassette recorders (VCRs) from the perspective of the active audience concept. Finds the orientation of Israeli VCR owners to VCRs is selective, somewhat involved, and generally productive of gratifications. Also finds the kinds and levels of activities associated with VCR use are moderately…
Sun, Xu; Zhu, Ze-Zhang; Chen, Xi; Liu, Zhen; Wang, Bin; Qiu, Yong
2016-08-01
This paper presents a highly challenging technique involving posterior double vertebral column resections (VCRs) and satellite rods placement. This was a young adult case with severe angular thoracolumbar kyphosis of 101 degrees, secondary to anterior segmentation failure from T11 to L1 . There were hemivertebrae at T11 and T12 , and a wedged vertebra at L1 . He received double VCRs at T12 and T11 and instrumented fusion from T6 to L4 via a posterior only approach. Autologous grafts and a cage were placed between the bony surfaces of the osteotomy gap. Once closure of osteotomy was achieved, bilateral permanent CoCr rods were placed with addition of satellite rods. Postoperative X-ray demonstrated marked correction of kyphosis. On the 10(th) days after surgery, the patient was able to walk without assistance. In conclusion, double VCRs are effective to correct severe angular kyphosis, and addition of satellite rods may be imperative to enhance instrumentation strength and thus prevent correction loss. © 2016 Chinese Orthopaedic Association and John Wiley & Sons Australia, Ltd.
Kroneman, Madelon W; van Essen, Gerrit A
2007-01-01
Background In Sweden, the vaccination campaign is the individual responsibility of the counties, which results in different arrangements. The aim of this study was to find out whether influenza vaccination coverage rates (VCRs) had increased between 2003/4 and 2004/5 among population at high risk and to find out the influence of personal preferences, demographic characteristics and health care system characteristics on VCRs. Methods An average sample of 2500 persons was interviewed each season (2003/4 and 2004/5). The respondents were asked whether they had had an influenza vaccination, whether they suffered from chronic conditions and the reasons of non-vaccination. For every county the relevant health care system characteristics were collected via a questionnaire sent to the medical officers of communicable diseases. Results No difference in VCR was found between the two seasons. Personal invitations strongly increased the chance of having had a vaccination. For the elderly, the number of different health care professionals in a region involved in administering vaccines decreased this chance. Conclusion Sweden remained below the WHO-recommendations for population at high risk due to disease. To meet the 2010 WHO-recommendation further action may be necessary to increase vaccine uptake. Increasing the number of personal invitations and restricting the number of different administrators responsible for vaccination may be effective in increasing VCRs among the elderly. PMID:17570837
A Primer on Choosing the Medium for Multimedia: Videodisc vs. Videotape.
ERIC Educational Resources Information Center
Shamp, Scott A.
1993-01-01
Discusses videodisc and videotape basic needs, software development issues, user workstation issues, appropriate applications for the different audio/visual storage media, counter vs. time-code VCRs, and implications for student development. (MDH)
Through the Looking Glass: The Multiple Layers of Multimedia.
ERIC Educational Resources Information Center
D'Ignazio, Fred
1990-01-01
Describes possible future uses of multimedia computers for instructional applications. Highlights include databases; publishing; telecommunications; computers and videocassette recorders (VCRs); audio and video digitizing; video overlay, or genlock; still-image video; videodiscs and CD-ROM; and hypermedia. (LRW)
Materials Data on V(CrS2)2 (SG:12) by Materials Project
Kristin Persson
2017-05-05
Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
Children's Uses and Gratifications of Home VCRs: Evolution or Revolution.
ERIC Educational Resources Information Center
Cohen, Akiba A.; And Others
1988-01-01
Examines gratifications associated with home video cassette recorder (VCR) use among Israeli school children. Finds that while the VCR is often used, it has not achieved any special priority in its perceived utility to gratify various needs. (MS)
Planning, Using the New Technology in Classrooms.
ERIC Educational Resources Information Center
Barker, Bruce O.
1990-01-01
"Technology talk" among progressive administrators includes more than just computers and VCRs. New telecommunications developments (in satellites, fiber optics, electronic bulletin boards, electronic mail, and two-way interactive instructional delivery) are "hot topics" that both principals and teachers must learn about. Peer interactions and…
Babies, Toddlers and the Media.
ERIC Educational Resources Information Center
Fenichel, Emily, Ed.
2001-01-01
"Zero to Three" is a single-focus bulletin of the National Center for Infants, Toddlers, and Families providing insight from multiple disciplines on the development of infants, toddlers, and their families. Noting that America's babies and toddlers live in a world full of television sets, VCRs, computers, videogames, and interactive…
LCD Projectors: An Evaluation of Features and Utilization for Educators.
ERIC Educational Resources Information Center
Fawson, Curtis E.
1990-01-01
Describes liquid crystal display (LCD) projectors and discusses their use in educational settings. Highlights include rear screen projection; LCD projectors currently available and the number of pixel elements in each; and examples of instructional applications, including portable setups, and use with videocassette recorders (VCRs), computers, and…
Notions of Technology and Visual Literacy
ERIC Educational Resources Information Center
Stankiewicz, Mary Ann
2004-01-01
For many art educators, the word "technology" conjures up visions of overhead projectors and VCRs, video and digital cameras, computers equipped with graphic programs and presentation software, digital labs where images rendered in pixels replace the debris of charcoal dust and puddled paints. One forgets that visual literacy and technology have…
The Functions of the VCR in the Home Leisure Environment.
ERIC Educational Resources Information Center
Lin, Carolyn A.
1992-01-01
A telephone survey of VCR households examined VCR satisfaction, VCR use, and interpersonal communication about VCRs in relation to home entertainment, displacement, and social utility. Differential patterns were found across all functions as well as support for previous research findings that more satisfied users are heavier users. (nine…
Cultivation in the Newer Media Environment.
ERIC Educational Resources Information Center
Perse, Elizabeth M.; And Others
1994-01-01
Tests the impact of cable, VCRs, and remote control devices on fear of crime and interpersonal mistrust. Finds that interpersonal mistrust was linked to greater exposure to cable's broadcast-type channels, but fear of crime and mistrust were negatively related to increased exposure to specialized cable channels. Finds fear of crime linked…
Set up and Operation of Video Cassette Recorders or "...How Do I Work This Thing???"
ERIC Educational Resources Information Center
Alaska State Dept. of Education, Juneau.
Designed to assist Alaskans in making optimum use of the LearnAlaska TV transmitter network, this booklet provides instructions for the operation and maintenance of videocassette recorders (VCRs). After a brief introduction, which lists state film library addresses for ordering an accompanying videocassette entitled "Set Up & Operation…
Going to the MALL: Mobile Assisted Language Learning
ERIC Educational Resources Information Center
Chinnery, George M.
2006-01-01
Practically since their availability, a succession of audiovisual recording devices (e.g., reel-to-reel, VCRs, PCs) has been used to capture language samples, and myriad playback and broadcast devices (e.g., phonographs, radios, televisions) have provided access to authentic speech samples. The espousal of audiolingual theory in the 1950s brought…
Television and the American Family. Second Edition.
ERIC Educational Resources Information Center
Bryant, Jennings, Ed.; Bryant, J. Alison, Ed.
Noting drastic changes in both television and the family since the 1990 edition, this revised volume provides an extensive consideration of television's role in the American family, from the uses families make of television and how extensions such as remote controls and VCRs affect usage, to the meanings families have for television, families'…
Integrating Computers with Video Cassette Recorders. Program Description.
ERIC Educational Resources Information Center
Anderson, Glenn
This report describes a project undertaken with students in grades 5 through 7 in the Toms River (New Jersey) Regional School District to develop a technique for integrating microcomputers and VCRs (videocassette recorders). Following an overview of the program, a brief review of research on technology in the classroom is presented along with a…
ERIC Educational Resources Information Center
Buggey, Tom; Hoomes, Grace; Sherberger, Mary Elizabeth; Williams, Sarah
2011-01-01
Video self-modeling (VSM) has accumulated a relatively impressive track record in the research literature across behaviors, ages, and types of disabilities. Using only positive imagery, VSM gives individuals the opportunity to view themselves performing a task just beyond their present functioning level via creative editing of videos using VCRs or…
Electronic Media and Youth Violence: A CDC Issue Brief for Researchers
ERIC Educational Resources Information Center
David-Ferdon, Corinne; Hertz, Marci Feldman
2009-01-01
Electronic media play an integral role in the lives of all people. Over the years, the rapid evolution of technology in various forms has significantly influenced the way people live and interact. Televisions, record players, computers, and VCRs changed how people learned, were entertained, stayed connected, and explored. In the past two decades,…
Colleges Look to "Big-Screen Research" to Stay Relevant and Collaborative
ERIC Educational Resources Information Center
Young, Jeffrey R.
2012-01-01
When VCRs became affordable, the film industry worried that people would stop going to the movies. Theaters have not gone away, but they have changed, with many now focused on delivering spectacles that can be seen only in a grand setting, with a big screen and booming sound. Traditional colleges now face a similar challenge, thanks to free or…
ERIC Educational Resources Information Center
Makwana, Alpesh P.
2009-01-01
"Pre-Trip Inspection" of the truck and trailer is one of the components of the current Commercial Driver's License (CDL) test. This part of the CDL test checks the ability of the student to identify the important parts of the commercial vehicle and their potential defects. The "Virtual Check Ride System" (VCRS), a…
Time and Money Spent on the Mass Media in an Age of New Communication Technologies: A Market Study.
ERIC Educational Resources Information Center
Ogan, Christine L.; Kelly, James D.
A study surveyed 276 residents of Indianapolis, Indiana to determine how the people might be changing media use and spending habits in a time of growing interest in video cassette recorders (VCRs), backyard satellite dishes, pay-TV, and personal computers. Questions were designed to determine the degree to which people would buy into the new…
ERIC Educational Resources Information Center
Association for Education in Journalism and Mass Communication.
The Media and Technology section of this collection of conference presentations contains the following 10 papers: "Carpooling on the Information Superhighway" (Lorna Veraldi); "New Media Departure in 'The Principle of Relative Constancy': VCRs" (Ghee-Young Noh); "Why the Western Design Approach Does Not Work for Asian…
NASA Astrophysics Data System (ADS)
Veera Raghavalu, K.; Govindha Rasu, N.
2018-03-01
The present research paper focuses on the use of Nano additive refrigerants in vapor compression refrigeration system (VCRS) because of their amazing development during Thermo Physical along with heat transfer potential to improve the coefficient of performance (COP) and reliability of refrigeration system. Furthermore, challenges and future instructions of performance enhancement of VCRS using Nano additive refrigerants were presented. Lubricant oil is essential in the entire vapour compression refrigeration systems, mostly for the efficient function of the compressor. But, some assign of the oil is entire the cycle oil circulates with the refrigerant. Presently, an assortment of investigation is going on in the field of the Nano-particles like metals, oxides, carbon Nano-tubes or carbides. Nano-lubricants are unique type of Nano-fluids which are varieties of Nano-particles, lubricants and have a wide variety in the fields of refrigeration systems. This paper, has been done on the application of Nano-particles balanced in lubricating oils of refrigerating systems are reviewed. The aim of this investigation is to study and find which type of lubricant oil works better with Nano-particles in the area of refrigeration. From the review of literature, it has been observed that Nano-particles mixed with mineral oil gives enhanced results than polyolester (POE) oil.
Balloon-borne video cassette recorders for digital data storage
NASA Technical Reports Server (NTRS)
Althouse, W. E.; Cook, W. R.
1985-01-01
A high speed, high capacity digital data storage system was developed for a new balloon-borne gamma-ray telescope. The system incorporates economical consumer products: the portable video cassette recorder (VCR) and a relatively newer item - the digital audio processor. The in-flight recording system employs eight VCRs and will provide a continuous data storage rate of 1.4 megabits/sec throughout a 40 hour balloon flight. Data storage capacity is 25 gigabytes and power consumption is only 10 watts.
NASA Astrophysics Data System (ADS)
Aziz, Azridjal; Mainil, Rahmat Iman; Mainil, Afdhal Kurniawan; Listiono, Hendra
2017-01-01
The aim of this work was to determine the effects of water temperature and air stream velocity on the performance of direct evaporative air cooler (DEAC) for thermal comfort. DEAC system requires the lower cost than using vapor compression refrigeration system (VCRS), because VCRS use a compressor to circulate refrigerant while DEAC uses a pump for circulating water in the cooling process to achieve thermal comfort. The study was conducted by varying the water temperature (10°C, 20°C, 30°C, 40°C, and 50°C) at different air stream velocity (2,93 m/s, 3.9 m/s and 4,57 m/s). The results show that the relative humidity (RH) in test room tends to increase with the increasing of water temperature, while on the variation of air stream velocity, RH remains constant at the same water temperature, because the amount of water that evaporates increase with the increasing water temperature. The cooling effectiveness (CE) increase with the increasing of air stream velocity where the higher CE was obtained at lower water temperature (10°C) with high air velocity (4,57m/s). The lower room temperature (26°C) was achieved at water temperature 10°C and air stream velocity 4.57 m/s with the relative humidity 85,87%. DEAC can be successfully used in rooms that have smoothly air circulation to fulfill the indoor thermal comfort.
Balloon-borne video cassette recorders for digital data storage
NASA Technical Reports Server (NTRS)
Althouse, W. E.; Cook, W. R.
1985-01-01
A high-speed, high-capacity digital data storage system has been developed for a new balloon-borne gamma-ray telescope. The system incorporates sophisticated, yet easy to use and economical consumer products: the portable video cassette recorder (VCR) and a relatively newer item - the digital audio processor. The in-flight recording system employs eight VCRs and will provide a continuous data storage rate of 1.4 megabits/sec throughout a 40 hour balloon flight. Data storage capacity is 25 gigabytes and power consumption is only 10 watts.
Navit, Saumya; Johri, Nikita; Khan, Suleman Abbas; Singh, Rahul Kumar; Chadha, Dheera; Navit, Pragati; Sharma, Anshul; Bahuguna, Rachana
2015-12-01
Dental anxiety is a widespread phenomenon and a concern for paediatric dentistry. The inability of children to deal with threatening dental stimuli often manifests as behaviour management problems. Nowadays, the use of non-aversive behaviour management techniques is more advocated, which are more acceptable to parents, patients and practitioners. Therefore, this present study was conducted to find out which audio aid was the most effective in the managing anxious children. The aim of the present study was to compare the efficacy of audio-distraction aids in reducing the anxiety of paediatric patients while undergoing various stressful and invasive dental procedures. The objectives were to ascertain whether audio distraction is an effective means of anxiety management and which type of audio aid is the most effective. A total number of 150 children, aged between 6 to 12 years, randomly selected amongst the patients who came for their first dental check-up, were placed in five groups of 30 each. These groups were the control group, the instrumental music group, the musical nursery rhymes group, the movie songs group and the audio stories group. The control group was treated under normal set-up & audio group listened to various audio presentations during treatment. Each child had four visits. In each visit, after the procedures was completed, the anxiety levels of the children were measured by the Venham's Picture Test (VPT), Venham's Clinical Rating Scale (VCRS) and pulse rate measurement with the help of pulse oximeter. A significant difference was seen between all the groups for the mean pulse rate, with an increase in subsequent visit. However, no significant difference was seen in the VPT & VCRS scores between all the groups. Audio aids in general reduced anxiety in comparison to the control group, and the most significant reduction in anxiety level was observed in the audio stories group. The conclusion derived from the present study was that audio distraction was effective in reducing anxiety and audio-stories were the most effective.
Palache, Abraham; Oriol-Mathieu, Valerie; Fino, Mireli; Xydia-Charmanta, Margarita
2015-10-13
Seasonal influenza is an important disease which results in 250,000-500,000 annual deaths worldwide. Global targets for vaccination coverage rates (VCRs) in high-risk groups are at least 75% in adults ≥65 years and increased coverage in other risk groups. The International Federation of Pharmaceutical Manufacturers and Associations Influenza Vaccine Supply (IFPMA IVS) International Task Force developed a survey methodology in 2008, to assess the global distribution of influenza vaccine doses as a proxy for VCRs. This paper updates the previous survey results on absolute numbers of influenza vaccine doses distributed between 2004 and 2013 inclusive, and dose distribution rates per 1000 population, and provides a qualitative assessment of the principal enablers and barriers to seasonal influenza vaccination. The two main findings from the quantitative portion of the survey are the continued negative trend for dose distribution in the EURO region and the perpetuation of appreciable differences in scale of dose distribution between WHO regions, with no observed convergence in the rates of doses distributed per 1000 population over time. The main findings from the qualitative portion of the survey were that actively managing the vaccination program in real-time and ensuring political commitment to vaccination are important enablers of vaccination, whereas insufficient access to vaccination and lack of political commitment to seasonal influenza vaccination programs are likely contributing to vaccination target failures. In all regions of the world, seasonal influenza vaccination is underutilized as a public health tool. The survey provides evidence of lost opportunity to protect populations against potentially serious influenza-associated disease. We call on the national and international public health communities to re-evaluate their political commitment to the prevention of the annual influenza disease burden and to develop a systematic approach to improve vaccine distribution equitably. Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserved.
Photovoltaic generating systems in rural schools in Neuquen Province, Argentina
DOE Office of Scientific and Technical Information (OSTI.GOV)
Lawand, T.A.; Campbell, J.
1997-12-01
During the period 1994-95, solar photovoltaic systems were installed at a number of schools in Neuquen Province, Argentina, by the Provincial electric utility, Ente Provincial de Energia del Neuquen. This was undertaken with funds provided by the Inter-American Development Bank. In all, there are 12 schools that have had photovoltaic generating systems installed. These generating systems are designed to provide electricity for the basic needs at the schools: primarily for lighting, and to operate small electrical appliances such as communication radios, televisions, VCR`s, AM/FM and short-wave radios. They do not provide enough energy to operate large consumption appliances such asmore » washing machines, microwaves, refrigerators, power tools, etc. The program of provision of PV systems was supplemented with training on simple systems for cooking food or drying fruit, etc. These techniques are primarily intended for demonstration at the schools thus serving an educational role with the hope that they will be transmitted in time to the families of the students where the need is manifested the most.« less
Precision engineering center. 1988 Annual report, Volume VI
DOE Office of Scientific and Technical Information (OSTI.GOV)
Dow, T.; Fornaro, R.; Keltie, R.
To reverse the downward trend in the balance of trade, American companies must concentrate on increasing research into new products, boosting productivity, and improving manufacturing processes. The Precision Engineering Center at North Carolina State University is a multidisciplinary research and graduate education program dedicated to providing the new technology necessary to respond to this challenge. One extremely demanding manufacturing area is the fabrication and assembly of optical systems. These systems are at the heart of such consumer products as cameras, lenses, copy machines, laser bar-code scanners, VCRs, and compact audio discs - products that the Japanese and other East Asianmore » countries are building dominance. A second critical area is the fabrication of VLSI and ULSI circuits. The tolerances required to produce the next generation of components for such systems have created the need for new approaches - approaches that could either make or break America`s competitive position. This report contains individual reports on research projects grouped into three broad areas: measurement and actuation; real-time control; precision fabrication. Separate abstracts for these articles have been indexed into the energy database.« less
Beyond Access and Exposure: Implications of Sneaky Media Use for Preschoolers' Sleep Behavior.
Moorman, Jessica D; Harrison, Kristen
2018-01-09
Greater consumption of and access to screen media are known correlates of unhealthy sleep behavior in preschoolers. What remains unknown, however, is the role a child's media use plays in this association. Parents and guardians of U.S. preschoolers (N = 278, average child age 56 months) provided information about their child's nightly duration of sleep, daily duration of nap, quantity of screen media use, sneaky media use, and the presence of a screen media device in the bedroom. We assessed four media: television, DVD/VCRs, video games, and computer/Internet. Based on rationales of sleep displacement, the forbidden fruit hypothesis, and social cognitive theory, we predicted that increased consumption of and access to media, along with sneaky media use, would predict a shorter duration of nightly sleep and longer duration of daily nap across the four screen media. In correlational analyses, a clear pattern emerged with quantity of media use, screen media in the bedroom, and sneaky media use associated with shorter nightly duration of sleep and longer duration of daily nap. In regression analyses, only weekday evening television viewing and sneaky media use predicted shorter nightly sleep duration; weekend morning and evening DVD use predicted longer naps.
Energy use of televisions and video cassette recorders in the U.S.
DOE Office of Scientific and Technical Information (OSTI.GOV)
Meier, Alan; Rosen, Karen
1999-03-01
In an effort to more accurately determine nationwide energy consumption, the U.S. Department of Energy has recently commissioned studies with the goal of improving its understanding of the energy use of appliances in the miscellaneous end-use category. This study presents an estimate of the residential energy consumption of two of the most common domestic appliances in the miscellaneous end-use category: color televisions (TVs) and video cassette recorders (VCRs). The authors used a bottom-up approach in estimating national TV and VCR energy consumption. First, they obtained estimates of stock and usage from national surveys, while TV and VCR power measurements andmore » other data were recorded at repair and retail shops. Industry-supplied shipment and sales distributions were then used to minimize bias in the power measurement samples. To estimate national TV and VCR energy consumption values, ranges of power draw and mode usage were created to represent situations in homes with more than one unit. Average energy use values for homes with one unit, two units, etc. were calculated and summed to provide estimates of total national TV and VCR energy consumption.« less
DOE Office of Scientific and Technical Information (OSTI.GOV)
Kavousian, A; Rajagopal, R; Fischer, M
2013-06-15
We propose a method to examine structural and behavioral determinants of residential electricity consumption, by developing separate models for daily maximum (peak) and minimum (idle) consumption. We apply our method on a data set of 1628 households' electricity consumption. The results show that weather, location and floor area are among the most important determinants of residential electricity consumption. In addition to these variables, number of refrigerators and entertainment devices (e.g., VCRs) are among the most important determinants of daily minimum consumption, while number of occupants and high-consumption appliances such as electric water heaters are the most significant determinants of dailymore » maximum consumption. Installing double-pane windows and energy-efficient lights helped to reduce consumption, as did the energy-conscious use of electric heater. Acknowledging climate change as a motivation to save energy showed correlation with lower electricity consumption. Households with individuals over 55 or between 19 and 35 years old recorded lower electricity consumption, while pet owners showed higher consumption. Contrary to some previous studies, we observed no significant correlation between electricity consumption and income level, home ownership, or building age. Some otherwise energy-efficient features such as energy-efficient appliances, programmable thermostats, and insulation were correlated with slight increase in electricity consumption. (C) 2013 Elsevier Ltd. All rights reserved.« less
An Introduced Hybrid Graphene/Polyaniline Composites for Improvement of Supercapacitor
NASA Astrophysics Data System (ADS)
Tayel, Mazhar B.; Soliman, Moataz M.; Ebrahim, Shaker; Harb, Mohamed E.
2016-01-01
Supercapacitors represent an attractive alternative for portable electronics and automotive applications due to their high capacitance, specific power and extended life. In fact, the growing demand of portable systems and hybrid electric vehicles, memory protection in complementary metal-oxide-semiconductor (CMOS), logic circuit, videocassette recorders (VCRs), compact disc (CD) players, personal computers (PCs), uninterruptible power supply (UPS) in security alarm systems, remote sensing, smoke detectors, etc. require high power in short-term pulses. Therefore, in the last 20 years, supercapacitors have been required for the development of large and small devices driven by electrical power. In this paper, graphene oxide (GO) was synthesized by improved Hummers method. Two polyaniline (PANI)/graphene oxide nanocomposites electrode materials were prepared from aniline, GO and ammoniumpersulfate (APS) by in situ chemical polymerization with the mass ratios (mGO:mAniline) 10:90 and 30: 70 in ice bath. The crystal structure and the surface topography of all materials were characterized by means of x-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), Raman spectroscopy and scanning electron microscopy (SEM). The electrochemical properties of the composites were evaluated by cyclic voltammetry (CV), charge-discharge measurements and electrical impedance spectroscopy (EIS), respectively. The results show that the composites have similar and enhanced cyclic voltammetry performance compared with pure PANI based electrode material. The graphene/PANI composite synthesized with the mass ratio (mANI:mGO) 90:10 possessed good capacitive behavior with a specific capacitance as high as 1509.35 F/g at scan rate of 1 mV/s in scanning potential window from -0.8 V to 0.8 V.
Coordinated Global Measurements of TLEs from the Space Shuttle and Ground Stations during MEIDEX
NASA Astrophysics Data System (ADS)
Yair, Y.; Price, C.; Levin, Z.; Israelevitch, P.; Devir, A.; Ziv, B.; Jospeh, J.; Mekler, Y.
2001-12-01
The Mediterranean Israeli Dust Experiment (MEIDEX) is scheduled to fly on-board the Columbia in May 2002, in a 39º inclination orbit for 16 days, passing over the major thunderstorm regions on Earth. The primary science instrument is a Xybion IMC-201 image-intensified radiometric camera with 6 narrow band filters (340nm, 380nm, 470nm, 555nm, 665nm, 860nm). A Sekai color video camera is a boresighted wide-FOV viewfinder. The cameras are mounted on a single-axis gimbal with a cross-track scan of ±22º degrees, inside a pressurized canister sealed with a coated quartz window that is mounted in the shuttle cargo bay. Data will be recorded in 3 digital VCRs and downlinked to the ground. During the night-side of the orbit there will be dedicated observations toward the Earth's limb above areas of active thunderstorms, in an effort to image TLEs from space. While earlier shuttle flights have succeeded in recording several ionospheric discharges by using cargo bay video cameras, MEIDEX offers a unique opportunity to conduct targeted observations with a calibrated, multispectral instrument. The Xybion camera has a rectangular FOV of 14.04(H) x 10.76 (V) degrees, that covers a volume of 466km (H) x 358km (V) at the Earth's limb, 1900km away from the shuttle. The spatial resolution is 665m (H) x 745m (V) per pixel, enabling to resolve some structural features of TLEs. Optical observations from space will be conducted with the 665nm filter that matches the observed wide peak centered at 670nm that typifies red sprites, and also with the 380 and 470nm filters to record blue jets. Observations will consist of a continuous recording of the Earth's limb, from the direction of the dusk terminator towards the night side. Areas of high convective activity will be forecast by using global aviation SIG maps, and uplinked to the crew before the observation. The astronaut will direct the camera toward areas with lightning activity, observed visually through the windows and on monitors in the crew cabin. Simultaneously with the optical observations from space, dedicated ground measurements will be conducted on a global scale. Two field sites in the Negev Desert in Israel will be used to collect electromagnetic data in the ELF and VLF frequency range. Additional ground stations in Germany, Hungary, USA, Antarctica, Chile, South Africa, Australia, Taiwan and Japan will also record Schumann Resonance and VLF signals. The coordinated measurements from various locations on Earth and from space will enable us to triangulate the location, and determine the polarity and charge moment of the parent lightning of the optically observed TLEs. The success of the campaign will further clarify the global picture of TLE occurrence.
NASA Astrophysics Data System (ADS)
Pajtok-Tari, I.
2009-04-01
The multimedia application and the use of Internet are becoming more and more common at schools and at homes due to the widespread of computers. The multimedia programs offer a great help for geography teachers because with their use all the visual aids are not needed in the classroom. They mix the advantages of blacboards, slides, displays, overhead projectors and VCR-s. At the same time offering other opportunities which could not be provided by the aids mentioned above because of their limits. Using a projector connected to a computer students can see the visual aids prepared by the teacher projected. Their use is justified because student's books cannot contain all the increasing amount of knowledge. Success is guaranteed because students are sensitive to new approaches. Digitalizing the material and finding it on the internet that way preparing a colourful, varied geography lesson is a time-consuming process. Being the methodologist and didactic information technologist at the Geography Department of Eszterházy Károly College I have been working for years on facilitating the work of my students, colleagues and my own activity using varied visual aids and types of equipment as preparation for the geography lesson. I have created an electronic set of appliances using the Dreamweaver MX program (‘GEOGRAPHY nEtQUIPMENT', from the 1st September 2006 on the Internet), it can be a real help for the teacher in each teaching situation. The ‘GEOGRAPHY nEtQUIPMENT' is a multimedia, Internet service which can be loaded free, the teacher gets into a virtual office clicking to the different pieces (drawer, shelf, wall map, globe, laptop, Tv set etc.) the teacher can continue with the necessary school equipment. Such equipment like: lesson plans for the lessons using digital technology, photos, video clips, animation, illustrations, pieces of music, maps, collection of minerals, database, diagrams, charts, bibliography, student's books, geography lexicons, magazines, geography games, important web pages (SDT, Google Earth) etc. Multimedia offers a new and efficient procedure of spreading information. It creates new possibilities in forming the teaching - learning environment. It integrates more mediums that way providing more efficient visualized possibilities for the teacher. The use of multimedia systems is advantageous because at the same time they have effect on more senses. The presentation of the content is more interesting, pleasing, so it is motivating. The renewal of schools can be achieved by those teachers who are able to recognize and use the modern technics, tecnology, for this reason teachers should integrate them in their activities. Hopefully the Net set of appliances makes this easier. The Net set of appliances can be shaped by the teacher. It can be loaded with his own materials (photos, videos, tests, charts, drafts, etc.). This way teachers may help their students to be familiar with the faster and faster developing information society so satisfying one of the most common goals of teaching geography, according to it: giving a coherent, comprehensive image of our world on a scientific basis, systematic knowledge, so creating a firm base for their further self- studies and the clever reception and appreciation of information.