Hot air drum evaporator. [Patent application

DOEpatents

Black, R.L.

1980-11-12

An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

Hot air drum evaporator

DOEpatents

Black, Roger L.

1981-01-01

An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

El Toro Library Solar Heating and Cooling Demonstration Project. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

This report is divided into a number of essentially independent sections, each of which covers a specific topic. The sections, and the topics covered, are as follows. Section 1 provides a brief summary description of the solar energy heating and cooling system including the key final design parameters. Section 2 contains a copy of the final Acceptance Test Report. Section 3 consists of a reduced set of final updated as-built mechanical, electrical, control and instrumentations drawings of the solar energy heating and cooling system. Section 4 provides a summary of system maintenance requirements, in the form of a maintenance schedulemore » which lists necessary maintenance tasks to be performed at monthly, quarterly, semi-annual, and annual intervals. Section 5 contains a series of photographs of the final solar energy system installation, including the collector field and the mechanical equipment room. Section 6 provides a concise summary of system operation and performance for the period of December 1981 through June 1982, as measured, computed and reported by Vitro Laboratories Division of Automation Industries, Inc., for the DOE National Solar Data Network. Section 7 provides a summary of key as-built design parameters, compared with the corresponding original design concept parameters. Section 8 provides a description of a series of significant problems encountered during construction, start-up and check-out of the solar energy heating and cooling system, together with the method employed to solve the problem at the time and/or recommendations for avoiding the problem in the future design of similar systems. Appendices A through H contain the installation, operation and maintenance submittals of the various manufacturers on the major items of equipment in the system. Reference CAPE-2823.« less

Effect of broadened-specification fuels on aircraft engines and fuel systems

NASA Technical Reports Server (NTRS)

Rudey, R. A.

1979-01-01

A wide variety of studies on the potential effects of broadened-specification fuels on future aircraft engines and fuel systems are summarized. The compositions and characteristics of aircraft fuels that may be derived from current and future crude-oil sources are described, and the most critical properties that may effect aircraft engines and fuel systems are identified and discussed. The problems that are most likely to be encountered because of changes in selected fuel properties are explored; and the related effects on engine performance, component durability and maintenance, and aircraft fuel-system performance are examined. The ability of current technology to accept possible future fuel specification changes is assessed and selected technological advances that can reduce the severity of the potential problems are illustrated.

Effect of broadened-specification fuels on aircraft engines and fuel systems

NASA Technical Reports Server (NTRS)

Rudey, R. A.

1979-01-01

A wide variety of studies on the potential effects of broadened-specification fuels on future aircraft engines and fuel systems are summarized. The compositions and characteristics of aircraft fuels that may be derived from current and future crude-oil sources are described, and the most critical properties that may affect aircraft engines and fuel systems are identified and discussed. The problems that are most likely to be encountered because of changes in selected fuel properties are described; and the related effects on engine performance, component durability and maintenance, and aircraft fuel-system performance are discussed. The ability of current technology to accept possible future fuel-specification changes is discussed, and selected technological advances that can reduce the severity of the potential problems are illustrated.

The Use of Megestrol Acetate in Some Feline Dermatological Problems

PubMed Central

Gosselin, Y.; Chalifoux, A.; Papageorges, M.

1981-01-01

Twenty-one cats were treated with megestrol acetate because they were showing clinical signs associated with one of the following problems: eosinophilic ulcer, eosinophilic plaque, neurodermatitis, endocrine alopecia and miliary dermatitis. The dosage schedule was 5 mg orally per day per cat for seven days, then 5 mg every three days for 21 days. In all cats, we noted a good improvement of the lesions as soon as treatment was started. In 25% of the patients, one treatment schedule was sufficient to control the skin disease for at least 18 months. In the remaining 75%, two treatment schedules and/or a maintenance dosage had to be established. Side effects encountered were increased appetite, personality changes and depression. PMID:7337916

Computer Aided Instruction (CAI) for the Shipboard Nontactical ADP Program (SNAP). Interim report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Duncan, L.D.; Hammons, C.E.; Hume, R.

Oak Ridge National Laboratory is developing a prototype computer aided instruction package for the Navy Management Systems Support Office. This report discusses the background of the project and the progress to date including a description of the software design, problems encountered, solutions found, and recommendations. The objective of this project is to provide a prototype that will enhance training and can be used as a shipboard refresher and retraining tool. The prototype system will be installed onboard ships where Navy personnel will have ready access to the training. The subsequent testing and evaluation of the prototype could provide the basismore » for a Navy-wide effort to implement computer aided instruction. The work to date has followed a rigorous structured analysis methodology based on the Yourdon/DeMarco techniques. A set of data flow diagrams and a data dictionary are included in the appendices. The problems encountered revolve around requirements to use existing hardware, software, and programmer capabilities for development, implementation, and maintenance of the instructional software. Solutions have been developed which will allow the software to exist in the given environment and still provide advanced features not available in commercial courses.« less

Sports Fields: A Manual for Design Construction and Maintenance.

ERIC Educational Resources Information Center

Puhalla, Jim; Krans, Jeff; Goatley, Mike

Comprehensive technical reference information is provided for those responsible for the design, construction, renovation, or maintenance of sports grounds. Chapters illustrate specific design elements of all popular sports facilities, and explain how those elements are integrated in a successful project; explore commonly encountered sports field…

Transfer of infrared thermography predictive maintenance technologies to Soviet-designed nuclear power plants: experience at Chernobyl

NASA Astrophysics Data System (ADS)

Pugh, Ray; Huff, Roy

1999-03-01

The importance of infrared (IR) technology and analysis in today's world of predictive maintenance and reliability- centered maintenance cannot be understated. The use of infrared is especially important in facilities that are required to maintain a high degree of equipment reliability because of plant or public safety concerns. As with all maintenance tools, particularly those used in predictive maintenance approaches, training plays a key role in their effectiveness and the benefit gained from their use. This paper details an effort to transfer IR technology to Soviet- designed nuclear power plants in Russia, Ukraine, and Lithuania. Delivery of this technology and post-delivery training activities have been completed recently at the Chornobyl nuclear power plant in Ukraine. Many interesting challenges were encountered during this effort. Hardware procurement and delivery of IR technology to a sensitive country were complicated by United States regulations. Freight and shipping infrastructure and host-country customs policies complicated hardware transport. Training activities were complicated by special hardware, software and training material translation needs, limited communication opportunities, and site logistical concerns. These challenges and others encountered while supplying the Chornobyl plant with state-of-the-art IR technology are described in this paper.

GPU-based High-Performance Computing for Radiation Therapy

PubMed Central

Jia, Xun; Ziegenhein, Peter; Jiang, Steve B.

2014-01-01

Recent developments in radiotherapy therapy demand high computation powers to solve challenging problems in a timely fashion in a clinical environment. Graphics processing unit (GPU), as an emerging high-performance computing platform, has been introduced to radiotherapy. It is particularly attractive due to its high computational power, small size, and low cost for facility deployment and maintenance. Over the past a few years, GPU-based high-performance computing in radiotherapy has experienced rapid developments. A tremendous amount of studies have been conducted, in which large acceleration factors compared with the conventional CPU platform have been observed. In this article, we will first give a brief introduction to the GPU hardware structure and programming model. We will then review the current applications of GPU in major imaging-related and therapy-related problems encountered in radiotherapy. A comparison of GPU with other platforms will also be presented. PMID:24486639

Computation of Asteroid Proper Elements: Recent Advances

NASA Astrophysics Data System (ADS)

Knežević, Z.

2017-12-01

The recent advances in computation of asteroid proper elements are briefly reviewed. Although not representing real breakthroughs in computation and stability assessment of proper elements, these advances can still be considered as important improvements offering solutions to some practical problems encountered in the past. The problem of getting unrealistic values of perihelion frequency for very low eccentricity orbits is solved by computing frequencies using the frequency-modified Fourier transform. The synthetic resonant proper elements adjusted to a given secular resonance helped to prove the existence of Astraea asteroid family. The preliminary assessment of stability with time of proper elements computed by means of the analytical theory provides a good indication of their poorer performance with respect to their synthetic counterparts, and advocates in favor of ceasing their regular maintenance; the final decision should, however, be taken on the basis of more comprehensive and reliable direct estimate of their individual and sample average deviations from constancy.

Problems Encountered by Religious Vocational Secondary School and Other Secondary School Students in Physical Education and Sports Activities

ERIC Educational Resources Information Center

Bar, Mustafa; Yaman, Menzure Sibel; Hergüner, Gülten

2016-01-01

The study aimed to determine problems encountered by Religious Vocational Secondary School and other Secondary School students in physical education and sports activities and to compare these problems according to school type and gender. A questionnaire named "Problems encountered in attending to physical education and sports activities"…

One Solution to the Arsenic Problem: A Return to Surface (Improved Dug) Wells

PubMed Central

Joya, Sakila Afroz; Mostofa, Golam; Yousuf, Jabed; Islam, Ariful; Elahi, Altab; Mahiuddin, Golam; Rahman, Mahmuder; Quamruzzaman, Quazi

2006-01-01

Arsenic contamination in drinking-water in Bangladesh is a major catastrophe, the consequences of which exceed most other man-made disasters. The national policy encourages the use of surface water as much as possible without encountering the problems of sanitation that led to the use of groundwater in the first place. This paper describes the success of the Dhaka Community Hospital (DCH) team and the procedure in implementing sanitary, arsenic-free, dugwells. The capital cost for running water is US$ 5–6 per person. Sixty-six sanitary dugwells were installed in phases between 2000 and 2004 in Pabna district of Bangladesh where there was a great need of safe water because, in some villages, 90% of tubewells were highly contaminated with arsenic. In total, 1,549 families now have access to safe arsenic-free dugwell water. Some of them have a water-pipe up to their kitchen. All of these were implemented with active participation of community members. They also pay for water-use and are themselves responsible for the maintenance and water quality. The DCH helped the community with installation and maintenance protocol and also with monitoring water quality. The bacteria levels are low but not always zero, and studies are in progress to reduce bacteria by chlorination. PMID:17366778

The Problems Encountered in a CTEV Clinic: Can Better Casting and Bracing Be Accomplished?

PubMed

Agarwal, Anil; Kumar, Anubrat; Shaharyar, Abbas; Mishra, Madhusudan

2016-09-07

The aim of the study is to create awareness in the practicing health care workers toward the problems encountered during casting and bracing of clubfoot following Ponseti method, and in turn avoid them. Retrospective audit of 6 years' clubfoot clinic records to analyze problems associated with Ponseti method. Problems were encountered in 26 cast and in 6 braced patients. Just 4 patients out of 71 syndromic (5.6%) experienced problems during casting compared with 3% overall incidence. The common problems encountered in casted patients were moisture lesions, hematoma, dermatitis due to occlusion, pressure sores, and fractures. There was excessive bleeding in 1 patient at time of tenotomy. In braced patients, pressure sores and tenderness at tenotomy site were major problems. None of the syndromic patients experienced difficulties during bracing. Problems were encountered with Ponseti method during casting, tenotomy, or bracing. Syndromic children had lesser complication rate than idiopathic clubfeet. It is important to be aware of these problems so that appropriate intervention can be done early. Level IV: Retrospective. © 2016 The Author(s).

Erectile Dysfunction Among Patients on Methadone Maintenance Therapy and Its Association With Quality of Life.

PubMed

Teoh, Joni Bing Fei; Yee, Anne; Danaee, Mahmoud; Ng, Chong Guan; Sulaiman, Ahmad Hatim Bin

Erectile dysfunction (ED) is a problem commonly encountered by patients on methadone maintenance therapy (MMT). This study aimed to assess the prevalence of ED among this group of patients along with its risk factors and association with quality of life (QOL). Male patients on MMT in a tertiary hospital in Malaysia were included in the study. A total of 134 patients with sexual partners were assessed for ED using the International Index of Erectile Function. Patients were assessed for substance use using Opiate Treatment Index (OTI) and depression using the Malay version of the self-rated Montgomery-Asberg Depression Rating Scale (MADRS-BM). QOL was evaluated using World Health Organisation Quality of Life (WHOQOL)-BREF. The prevalence of ED among patients on MMT was 67%, with 26.1% having mild ED, 30.4% having mild-to-moderate ED, 7.0% having moderate ED, and 17.2% having severe ED. Patients with depression were 4 times more likely to have ED compared with patients without depression, whereas increasing age significantly correlated with the severity of ED. Having ED predicted a poorer QOL in the social relationships domain. Depression is highly associated with ED, which negatively influences the social aspect of QOL among patients on methadone maintenance therapy.

The most common problem facing by the maintenance department: A case Study between Universiti Tun Hussein Onn Malaysia (UTHM) and Universiti Teknologi Malaysia (UTM)

NASA Astrophysics Data System (ADS)

Norazam Yasin, Mohd; Mohamad Zin, Rosli; Halid Abdullah, Abd; Shafiq Mahmad, Muhammad; Fikri Hasmori, Muhammad

2017-11-01

From time to time, the maintenance works become more challenging due to construction of new building and also aging of the existing buildings. University buildings without any exception require proper maintenance services to support their function requirements and this can be considered as major responsibilities to be fulfilled by the maintenance department in the universities. Maintenance department specifically will face various kinds of problems in their operation works and thus this might influence the maintenance work operations itself. This study purposely to identify the common problem facing by the maintenance department and also to examine the current status of the maintenance department. In addition, this study would also propose any suitable approach that could be implemented to overcome the problem facing by the maintenance department. To achieve the objectives of this study, a combination of deep literature study and carrying out a survey is necessary. Literature study aimed to obtain deeper information about this study, meanwhile a survey aimed at identifying the common problem facing by the maintenance department and also to provide the information of the maintenance department’s organization. Several methods will be used in analyzing the data obtained through the survey, including Microsoft Office Excel and also using mean index formula. This study has identified three categories of problem in the maintenance department, which are management problems, human resource problem, and technical problems. Following the findings, several solutions being proposed which can be implemented as the solution to the problem facing. These suggestions have the potential to improve the maintenance department work efficiency, thus could help to increase the department productivity.

[Survey on drug-related problems in Lithuania's pharmacies].

PubMed

Kubiliene, Loreta; Liukenskyte, Simona; Savickas, Arūnas; Jureniene, Kristina

2006-01-01

to survey the most common and the most important drug-related problems in Lithuania, to explore their solution and factors influencing it, to formulate recommendations for solving drug-related problems. Pharmacists from community pharmacies participated in a random survey. They filled in questionnaires about drug-related problems and their solutions. It was the first survey on drug-related problems ever carried out in Lithuania. For the first time, it was found out that in Lithuania pharmacists most commonly encountered drug-related problem--additional drug therapy (52.03% of respondents)--and most rarely encountered drug-related problem--dosage too high (3% of respondents). Pharmacists stated that all categories of drug-related problems were of equal importance. It was established that pharmacists commonly solved drug-related problems associated with noncompliance with instructions (72.5% of respondents) and rarely met the problem when improper drug was selected (39.56% of respondents). Patients taking prescription medicines commonly encounter additional drug therapy problem, and patients taking nonprescription medications commonly encounter problems related to noncompliance with instructions.

STV fueling options

NASA Technical Reports Server (NTRS)

Flemming, Ken

1991-01-01

Lunar vehicles that will be space based and reusable will require resupply of propellants in orbit. Approximately 75 pct. of the total mass delivered to low earth orbit will be propellants. Consequently, the propellant management techniques selected for Space Exploration Initiative (SEI) orbital operations will have a major influence on the overall SEI architecture. Five proposed propellant management facility (PMF) concepts were analyzed and compared in order to determine the best method of resupplying reusable, space based Lunar Transfer Vehicles (LTVs). The processing time needed at the Space Station to prepare LTV for its next lunar mission was estimated for each of the PMF concepts. The estimated times required to assemble and maintain the different PMF concepts were also compared. The results of the maintenance analysis were similar, with co-orbiting depots needing 100 to 350 pct. more annual maintenance. The first few external tanks mating operations at KSC encountered many problems that could cause serious lunar mission schedule delays. The use of drop tanks on lunar vehicles increases by a factor of four the number of critical propellant interface disturbances.

On-line crack prognosis in attachment lug using Lamb wave-deterministic resampling particle filter-based method

NASA Astrophysics Data System (ADS)

Yuan, Shenfang; Chen, Jian; Yang, Weibo; Qiu, Lei

2017-08-01

Fatigue crack growth prognosis is important for prolonging service time, improving safety, and reducing maintenance cost in many safety-critical systems, such as in aircraft, wind turbines, bridges, and nuclear plants. Combining fatigue crack growth models with the particle filter (PF) method has proved promising to deal with the uncertainties during fatigue crack growth and reach a more accurate prognosis. However, research on prognosis methods integrating on-line crack monitoring with the PF method is still lacking, as well as experimental verifications. Besides, the PF methods adopted so far are almost all sequential importance resampling-based PFs, which usually encounter sample impoverishment problems, and hence performs poorly. To solve these problems, in this paper, the piezoelectric transducers (PZTs)-based active Lamb wave method is adopted for on-line crack monitoring. The deterministic resampling PF (DRPF) is proposed to be used in fatigue crack growth prognosis, which can overcome the sample impoverishment problem. The proposed method is verified through fatigue tests of attachment lugs, which are a kind of important joint component in aerospace systems.

Resurgence: The Unintended Maintenance of Problem Behavior

ERIC Educational Resources Information Center

Ringdahl, Joel E.; St. Peter, Claire

2017-01-01

Researchers, teachers, practitioners, and parents are often concerned with how to program for and achieve the maintenance of appropriate behavior. The unintended maintenance of problem behavior is less often evaluated. This article describes a behavioral phenomenon, resurgence, that may result in the unintended maintenance of problem behavior.…

Monitoring Reasons for Encounter via an Electronic Patient Record System: the Case of a Rural Practice Initiative

PubMed Central

Klinis, Spyridon; Markaki, Adelais; Kounalakis, Dimitrios; Symvoulakis, Emmanouil K.

2012-01-01

The objective of this brief communication was to tabulate common reasons for encounter in a Greek rural general practice, as result of a recently adopted electronic patient record (EPR) application. Twenty encounter reasons accounted for 3,797 visits (61% of all patient encounters), whereas 565 other reasons accounted for the remaining 2,429 visits (39%). Number one reason for encounter was health maintenance or disease prevention seeking services, including screening examinations for malignancies, immunization and provision of medical opinion reports. Hypertension, lipid disorder and ischemic heart disease without angina were among the most common reasons for seeking care. A strengths/weaknesses/opportunities/threats (SWOT) analysis on the key role of an EPR system in collecting data from rural and remote primary health care settings is also presented. PMID:23091407

Cooperation enhanced by habitat destruction in Prisoner's Dilemma Games

NASA Astrophysics Data System (ADS)

Yang, Xiqing; Wang, Wanxiong; Zhang, Feng; Qiao, Hongqiang

2017-11-01

The emergence and maintenance of cooperation is a fundamental problem within groups of selfish individuals, whereby we introduce a model of replicator equations based on the Prisoner's Dilemma game. In the present work, the effect of habitat destruction on the evolution of cooperation will be taken into account. Our results show that cooperators can receive the biggest boost for a moderate value of habitat destruction, and more serious habitat destruction will lead to lower levels of cooperation until zero. Moreover, we also reach the conclusion that the cooperation level decreases monotonously with the increasing of the ratio of cooperative cost to benefit but increases monotonously with the increasing of the encounter probability. Our findings can help to further understand the evolution of cooperation under the harsh external environment.

Urological considerations in space medicine.

NASA Technical Reports Server (NTRS)

Cockett, A. T. K.; Adey, W. R.; Roberts, A. P.

1972-01-01

Urological problems encountered during the preparation phases of Biosatellite III, flight of Bonny the Space Monkey, are detailed. The solution to each problem is detailed. The catheter system employed, antibiotic coverage used, and bacteria encountered in the urine of the five animals are detailed. Urinary calcium levels in three ground based animals are illustrated. Testicular alterations encountered in all animals are mentioned. It is concluded that space flights of duration beyond nine days may present serious problems of a urological nature.

Identification and Management of Information Problems by Emergency Department Staff

PubMed Central

Murphy, Alison R.; Reddy, Madhu C.

2014-01-01

Patient-care teams frequently encounter information problems during their daily activities. These information problems include wrong, outdated, conflicting, incomplete, or missing information. Information problems can negatively impact the patient-care workflow, lead to misunderstandings about patient information, and potentially lead to medical errors. Existing research focuses on understanding the cause of these information problems and the impact that they can have on the hospital’s workflow. However, there is limited research on how patient-care teams currently identify and manage information problems that they encounter during their work. Through qualitative observations and interviews in an emergency department (ED), we identified the types of information problems encountered by ED staff, and examined how they identified and managed the information problems. We also discuss the impact that these information problems can have on the patient-care teams, including the cascading effects of information problems on workflow and the ambiguous accountability for fixing information problems within collaborative teams. PMID:25954457

Problems Encountered during the Scientific Research Process in Graduate Education: The Institute of Educational Sciences

ERIC Educational Resources Information Center

Akyürek, Erkan; Afacan, Özlem

2018-01-01

This study was conducted to determine the problems faced by graduate students when conducting scientific research and to make suggestions for solving these problems. The research model was a case study. Semi-structured interviews were conducted with participants in the study with questions about the problems encountered during scientific research…

Response problems in a vacation panel study

Treesearch

Christine A. Vogt; Susan I. Stewart

2001-01-01

This paper investigates response problems encountered in a panel study of travel behavior. Though the overall response rate to the three-wave panel study was acceptable (over 60%), three types of response problems were encountered: refusal, non-response, and attrition. In a follow-up phone survey, a sample of individuals from each problem response group was questioned...

Scheduling with non-decreasing deterioration jobs and variable maintenance activities on a single machine

NASA Astrophysics Data System (ADS)

Zhang, Xingong; Yin, Yunqiang; Wu, Chin-Chia

2017-01-01

There is a situation found in many manufacturing systems, such as steel rolling mills, fire fighting or single-server cycle-queues, where a job that is processed later consumes more time than that same job when processed earlier. The research finds that machine maintenance can improve the worsening of processing conditions. After maintenance activity, the machine will be restored. The maintenance duration is a positive and non-decreasing differentiable convex function of the total processing times of the jobs between maintenance activities. Motivated by this observation, the makespan and the total completion time minimization problems in the scheduling of jobs with non-decreasing rates of job processing time on a single machine are considered in this article. It is shown that both the makespan and the total completion time minimization problems are NP-hard in the strong sense when the number of maintenance activities is arbitrary, while the makespan minimization problem is NP-hard in the ordinary sense when the number of maintenance activities is fixed. If the deterioration rates of the jobs are identical and the maintenance duration is a linear function of the total processing times of the jobs between maintenance activities, then this article shows that the group balance principle is satisfied for the makespan minimization problem. Furthermore, two polynomial-time algorithms are presented for solving the makespan problem and the total completion time problem under identical deterioration rates, respectively.

Innovative discharge geometries for diffusion-cooled gas lasers

NASA Astrophysics Data System (ADS)

Lapucci, Antonio

2004-09-01

Large area, narrow discharge gap, diffusion cooled gas lasers are nowadays a well established technology for the construction of industrial laser sources. Successful examples exist both with the slab (Rofin-Sinar) or coaxial (Trumpf) geometry. The main physical properties and the associated technical problems of the transverse large area RF discharge, adopted for the excitation of high power diffusion cooled gas lasers, are reviewed here. The main problems of this technology are related to the maintenance of a uniform and stable plasma excitation between closely spaced large-area electrodes at high power-density loading. Some practical solutions such as distributed resonance of the discharge channel proved successful in the case of square or rectangular cross-sections but hardly applicable to geometries such as that of coaxial electrodes. In this paper we present some solutions, adopted by our group, for the development of slab and annular CO2 lasers and for CO2 laser arrays with linear or circular symmetry. We will also briefly mention the difficulties encountered in the extraction of a good quality beam from an active medium with such a cross section. A problem that has also seen some interesting solutions.

The design and implementation of the HY-1B Product Archive System

NASA Astrophysics Data System (ADS)

Liu, Shibin; Liu, Wei; Peng, Hailong

2010-11-01

Product Archive System (PAS), as a background system, is the core part of the Product Archive and Distribution System (PADS) which is the center for data management of the Ground Application System of HY-1B satellite hosted by the National Satellite Ocean Application Service of China. PAS integrates a series of updating methods and technologies, such as a suitable data transmittal mode, flexible configuration files and log information in order to make the system with several desirable characteristics, such as ease of maintenance, stability, minimal complexity. This paper describes seven major components of the PAS (Network Communicator module, File Collector module, File Copy module, Task Collector module, Metadata Extractor module, Product data Archive module, Metadata catalogue import module) and some of the unique features of the system, as well as the technical problems encountered and resolved.

Shuttle Orbiter Active Thermal Control Subsystem design and flight experience

NASA Technical Reports Server (NTRS)

Bond, Timothy A.; Metcalf, Jordan L.; Asuncion, Carmelo

1991-01-01

The paper examines the design of the Space Shuttle Orbiter Active Thermal Control Subsystem (ATCS) constructed for providing the vehicle and payload cooling during all phases of a mission and during ground turnaround operations. The operation of the Shuttle ATCS and some of the problems encountered during the first 39 flights of the Shuttle program are described, with special attention given to the major problems encountered with the degradation of the Freon flow rate on the Orbiter Columbia, the Flash Evaporator Subsystem mission anomalies which occurred on STS-26 and STS-34, and problems encountered with the Ammonia Boiler Subsystem. The causes and the resolutions of these problems are discussed.

A Study on the Application of Creative Problem Solving Teaching to Statistics Teaching

ERIC Educational Resources Information Center

Hu, Ridong; Xiaohui, Su; Shieh, Chich-Jen

2017-01-01

Everyone would encounter the life issue of solving complicated problems generated by economic behaviors among all activities for making a living. Various life problems encountered therefore could be generalized by economic statistics. In other words, a lot of important events in daily life are related to economic statistics. For this reason,…

Problems Encountered by Novice Pair Programmers

ERIC Educational Resources Information Center

Hanks, Brian

2008-01-01

In a study of the types of problems encountered by students that led them to seek assistance, Robins et al. [2006] found that the most common problems were related to trivial mechanics. The students in this study worked by themselves on their programming exercises. This article discusses a replication of the Robins et al. study in which the…

[Biogas production from cellulose-containing substrates: a review].

PubMed

Tsavkelova, E A; Netrusov, A I

2012-01-01

Anaerobic microbial conversion of organic substrates to various biofuels is one of the alternative energy sources attracting the greatest attention of scientists. The advantages of biogas production over other technologies are the ability of methanogenic communities to degrade a broad range of substrates and concomitant benefits: neutralization of organic waste, reduction of greenhouse gas emission, and fertilizer production. Cellulose-containing materials are a good substrate, but their full-scale utilization encounters a number of problems, including improvement of the quality and amount ofbiogas produced and maintenance of the stability and high efficiency of microbial communities. We review data on microorganisms that form methanogenic cellulolytic communities, enzyme complexes of anaerobes essential for cellulose fiber degradation, and feedstock pretreatment, as biodegradation is hindered in the presence of lignin. Methods for improving biogas production by optimization of microbial growth conditions are considered on the examples of biogas formation from various types of plant and paper materials: writing paper and cardboard.

RECOMMENDED PRACTICE FOR THE USE OF ELECTROMAGNETIC FLOWMETERS IN WASTEWATER TREATMENT PLANTS

EPA Science Inventory

Electromagnetic flowmeters that conform to the guidelines described in this document can be used to measure the volumetric flowrate of all liquids and sludges normally encountered in wastewater treatment plants, provided that adequate inspection and maintenance are performed as r...

Policy implementation of methadone maintenance treatment and HIV infection: evidence from Hubei province, China

PubMed Central

2013-01-01

To view methadone maintenance treatment (MMT) globally, it is necessary to accumulate data on MMT policy implementation under different health service systems. The aim of the current study is to provide empirical evidence about policy implementation of MMT and HIV infection control, as well as recommendations for improvement of MMT in the future. Based on China’s national policy framework of MMT, policy implementation of MMT in Hubei province has two objectives: 1) to create linkages between health and public security, and 2) to provide integrated services for management of drug abusers. From 2007 to 2011, following the establishment of MMT clinics that provide methadone as well as HIV prevention services, the proportion of HIV infection among drug abusers decreased relatively quickly (12.12% → 5.77% → 5.19% → 2.39% → 2.04%). However, high drop-out rate and poor information management have been identified as particular problems which now need to be addressed. Furthermore, client drop-out from MMT programs may reflect social issues the clients encounter, and consequently, sustainable MMT development requires incorporation of social measures that help MMT clients return to society without discrimination, especially through family cooperation and employment opportunities. PMID:24188659

Wireless sensing and vibration control with increased redundancy and robustness design.

PubMed

Li, Peng; Li, Luyu; Song, Gangbing; Yu, Yan

2014-11-01

Control systems with long distance sensor and actuator wiring have the problem of high system cost and increased sensor noise. Wireless sensor network (WSN)-based control systems are an alternative solution involving lower setup and maintenance costs and reduced sensor noise. However, WSN-based control systems also encounter problems such as possible data loss, irregular sampling periods (due to the uncertainty of the wireless channel), and the possibility of sensor breakdown (due to the increased complexity of the overall control system). In this paper, a wireless microcontroller-based control system is designed and implemented to wirelessly perform vibration control. The wireless microcontroller-based system is quite different from regular control systems due to its limited speed and computational power. Hardware, software, and control algorithm design are described in detail to demonstrate this prototype. Model and system state compensation is used in the wireless control system to solve the problems of data loss and sensor breakdown. A positive position feedback controller is used as the control law for the task of active vibration suppression. Both wired and wireless controllers are implemented. The results show that the WSN-based control system can be successfully used to suppress the vibration and produces resilient results in the presence of sensor failure.

Integrated Maintenance Information System (IMIS): A Maintenance Information Delivery Concept.

DTIC Science & Technology

1987-11-01

InterFace Figure 2. Portable Maintenance Computer Concept. provide advice for difficult fault-isolation problems . The technician will be able to accomplish...faced with an ever-growing number of paper-based technical orders (TOs). This has greatly increased costs and distribution problems . In addition, it has...compounded problems associ- ated with ensuring accurate data and the lengthy correction times involved. To improve the accuracy of technical data and

Addressing Problems Encountered in Case-Based Teaching

ERIC Educational Resources Information Center

Turgeon, A. J.

2007-01-01

TURF 436 (Case Studies in Turfgrass Management) is the capstone course for turfgrass science majors at the Pennsylvania State University. Students are introduced to problems and complex problematic situations encountered in the management of golf and sports turf and in professional lawn-care operations. Following completion of the orientation case…

Conquering common breast-feeding problems.

PubMed

Walker, Marsha

2008-01-01

Meeting mothers' personal breast-feeding goals depends on a number of factors, including the timely resolution of any problems she encounters. Nurses are often the first providers who interact with the mother during the perinatal period and are positioned to guide mothers through the prevention and solving of breast-feeding problems. Although many problems may be "common," failure to remedy conditions that cause pain, frustration, and anxiety can lead to premature weaning and avoidance of breast-feeding subsequent children. This article describes strategies and interventions to alleviate common problems that breast-feeding mothers frequently encounter.

A Study of the Causes of Physical and Emotional Problems Encountered by Older Women Returning to Secretarial Employment After A Prolonged Absence. Final Report.

ERIC Educational Resources Information Center

Lloyd, Glenna G.

The problem of this study was to identify the cause of the physical and emotional problems encountered by older women who have returned to work after a prolonged absence. Such information, it was believed, would be valuable to business and educational institutions in retraining or updating prospective secretarial employees. Data for the study were…

Solving complex maintenance planning optimization problems using stochastic simulation and multi-criteria fuzzy decision making

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tahvili, Sahar; Österberg, Jonas; Silvestrov, Sergei

One of the most important factors in the operations of many cooperations today is to maximize profit and one important tool to that effect is the optimization of maintenance activities. Maintenance activities is at the largest level divided into two major areas, corrective maintenance (CM) and preventive maintenance (PM). When optimizing maintenance activities, by a maintenance plan or policy, we seek to find the best activities to perform at each point in time, be it PM or CM. We explore the use of stochastic simulation, genetic algorithms and other tools for solving complex maintenance planning optimization problems in terms ofmore » a suggested framework model based on discrete event simulation.« less

Affirmative Action and Women in Higher Education.

ERIC Educational Resources Information Center

Hazzard, Terry

The purposes of this paper are to: (1) discuss the historical development of women in higher education; (2) describe the implementation of federal policies for women; (3) focus on selected problems encountered by women in the work-place; and (4) offer recommendations and suggestions for eliminating some of the problems that women encounter. The…

Comprehensive field evaluation of asphalt patching methods and development of simple decision trees and a best practices manual.

DOT National Transportation Integrated Search

2017-06-01

The long-term performance of pothole patches largely depends on the selection of the patching method. A number of pothole patching methods are in practice in Minnesota and other nearby states. However, pavement maintenance crews often encounter probl...

Dilemmas in the (un)veiling of the diagnosis of Alzheimer's disease: walking an ethical and professional tight rope.

PubMed

Karnieli-Miller, Orit; Werner, Perla; Aharon-Peretz, Judith; Eidelman, Shmuel

2007-08-01

To enhance the understanding and effect of physician's difficulties, attitudes and communication styles on the disclosure of the diagnosis of AD in practice. Qualitative, phenomenological study, combining pre-encounter interviews with physicians, observations of actual encounters of diagnosis disclosure of AD, and post-encounter interviews. There were various ways or tactics to (un)veil the bad news that may be perceived as different ways of dulling the impact and avoiding full and therefore problematic statements. In the actual encounters this was accomplished by keeping encounters short, avoiding elaboration, confirmation of comprehension and explicit terminology and using fractured sentences. The present study's findings highlight the difficulties encountered in breaking the news about AD, in the way it is actually done, and the problems that may arise from this way of un/veiling the news. The main problem is that the reluctance to make a candid disclosure of the diagnosis as was demonstrated in this study may violate basic moral and legal rights and may also deprive patients and caregivers of some of the benefits of early disclosure of diagnosis. There is a need for assisting physicians to cope with their personal difficulties, problems and pitfalls in breaking the news.

The Public School Infrastructure Problem: Deteriorating Buildings and Deferred Maintenance

ERIC Educational Resources Information Center

Hunter, Richard C.

2009-01-01

The deterioration of public school buildings is more prevalent in large cities that, because of funding shortfalls, have deferred maintenance and require huge sums to bring their buildings up to acceptable standards. Cities such as New York will require approximately $680 million to address the problem of deferred maintenance for needed painting,…

Development and Evaluation of a Measure to Assess Restorative Sleep

PubMed Central

Drake, Christopher L.; Hays, Ron D.; Morlock, Robert; Wang, Fong; Shikiar, Richard; Frank, Lori; Downey, Ralph; Roth, Thomas

2014-01-01

Background: There are validated measures assessing insomnia and disturbed sleep, but few psychometrically sound instruments to assess perceptions of the restorative or inadequate properties of sleep are available. Study Objectives: To develop and evaluate a new instrument, the Restorative Sleep Questionnaire (RSQ). Design and Setting: Focus groups were conducted using participants with and without nonrestorative sleep complaints. Questions were designed to elicit the feelings and experiences people have about their sleep and their view of daytime consequences of sleep. Expert panels confirmed the importance of nonrestorative sleep (NRS) as a frequently encountered problem either with or without other sleep complaints. The resulting RSQ was administered in three studies: (1) a telephone interview with healthy controls and individuals with sleep problems; (2) a randomized clinical trial of patients with primary insomnia assessed by polysomnography (PSG); (3) a PSG study of subjects with NRS complaints. Measurement and Results: Across all studies, the new measures were shown to be significantly correlated with health-related quality of life (HRQL) domains hypothesized to be related to NRS. The RSQ had good psychometric properties (α > 0.90; rtest-retest > 0.80), and factor analysis confirmed the unidimensionality of the measure. The RSQ was able to distinguish between healthy controls, patients with primary insomnia, and insomnia patients with isolated NRS complaints but without PSG defined sleep onset, duration, or maintenance problems. Normal sleepers reported sleep that was about a standard deviation more restorative than that of those with NRS on the RSQ. Conclusions: The results of the study provide support for the reliability and validity of the RSQ as a measure of NRS in subjects with and without self-reported or PSG confirmed sleep initiation and maintenance difficulties. ClinicalTrials.gov Identifiers: NCT00655369; NCT00705601 Citation: Drake CL, Hays RD, Morlock R, Wang F, Shikiar R, Frank L, Downey R, Roth T. Development and evaluation of a measure to assess restorative sleep. J Clin Sleep Med 2014;10(7):733-741. PMID:25024650

The Problem-Based Learning Process: Reflections of Pre-Service Elementary School Teachers

ERIC Educational Resources Information Center

Baysal, Zeliha Nurdan

2017-01-01

This study aims to identify the benefits acquired by third-year pre-service elementary school teachers participating in a problem-based learning process in social studies education, the issues they encountered in that process and those they are likely to encounter, and their feelings about the process. Semi-structured interviews were used as one…

Mathematical Frameworks for Diagnostics, Prognostics and Condition Based Maintenance Problems

DTIC Science & Technology

2008-08-15

REPORT Mathematical Frameworks for Diagnostics, Prognostics and Condition Based Maintenance Problems (W911NF-05-1-0426) 14. ABSTRACT 16. SECURITY ...other documentation. 12. DISTRIBUTION AVAILIBILITY STATEMENT Approved for Public Release; Distribution Unlimited 9. SPONSORING/MONITORING AGENCY NAME...parallel and distributed computing environment were researched. In support of the Condition Based Maintenance (CBM) philosophy, a theoretical framework

Buying Into Maintenance.

ERIC Educational Resources Information Center

May, Abigail

1998-01-01

Describes how educational institutions are recognizing the short-sightedness of deferred maintenance. Discusses the challenges facing schools as they confront maintenance costs and what they must do to address the problem. Offers advice on proactive stances toward maintenance such as computerized work control processes, maintenance zones, and…

Optimal infrastructure maintenance scheduling problem under budget uncertainty.

DOT National Transportation Integrated Search

2010-05-01

This research addresses a general class of infrastructure asset management problems. Infrastructure : agencies usually face budget uncertainties that will eventually lead to suboptimal planning if : maintenance decisions are made without taking the u...

Ability of Social Work Students to Determine the Appropriateness of Solutions to Problems Encountered in Social Work Practice.

ERIC Educational Resources Information Center

Sturges, Jack; Yarbrough, Roy D.

The purpose of this study was to determine whether there was an association between the amount of formal social work education completed and ability of students to judge the degree of appropriateness of proposed solutions to problems frequently encountered in social work practice, and secondarily to determine whether students' judgments of problem…

Mothers' Perceptions of Citizenship, Practices for Developing Citizenship Conscience of Their Children and Problems They Encountered

ERIC Educational Resources Information Center

Ersoy, A. Figen

2012-01-01

Family plays an important role in the development of citizenship awareness of children. The purpose of the present study is to figure out the citizenship perceptions of mothers, their practices for developing citizenship conscience of their children and to explore the problems they have encountered. In this study, critical case sampling method has…

Tactics Employed and Problems Encountered by University English Majors in Hong Kong in Using a Dictionary

ERIC Educational Resources Information Center

Chan, Alice Yin Wa

2005-01-01

Building on the results of a small-scale survey which investigated the general use of dictionaries by university English majors in Hong Kong using a questionnaire survey and their specific use of dictionaries using an error correction task, this article discusses the tactics these students employed and the problems they encountered when using a…

A Grounded Theory Study of Aircraft Maintenance Technician Decision-Making

NASA Astrophysics Data System (ADS)

Norcross, Robert

Aircraft maintenance technician decision-making and actions have resulted in aircraft system errors causing aircraft incidents and accidents. Aircraft accident investigators and researchers examined the factors that influence aircraft maintenance technician errors and categorized the types of errors in an attempt to prevent similar occurrences. New aircraft technology introduced to improve aviation safety and efficiency incur failures that have no information contained in the aircraft maintenance manuals. According to the Federal Aviation Administration, aircraft maintenance technicians must use only approved aircraft maintenance documents to repair, modify, and service aircraft. This qualitative research used a grounded theory approach to explore the decision-making processes and actions taken by aircraft maintenance technicians when confronted with an aircraft problem not contained in the aircraft maintenance manuals. The target population for the research was Federal Aviation Administration licensed aircraft and power plant mechanics from across the United States. Nonprobability purposeful sampling was used to obtain aircraft maintenance technicians with the experience sought in the study problem. The sample population recruitment yielded 19 participants for eight focus group sessions to obtain opinions, perceptions, and experiences related to the study problem. All data collected was entered into the Atlas ti qualitative analysis software. The emergence of Aircraft Maintenance Technician decision-making themes regarding Aircraft Maintenance Manual content, Aircraft Maintenance Technician experience, and legal implications of not following Aircraft Maintenance Manuals surfaced. Conclusions from this study suggest Aircraft Maintenance Technician decision-making were influenced by experience, gaps in the Aircraft Maintenance Manuals, reliance on others, realizing the impact of decisions concerning aircraft airworthiness, management pressures, and legal concerns related to decision-making. Recommendations included an in-depth systematic review of the Aircraft Maintenance Manuals, development of a Federal Aviation Administration approved standardized Aircraft Maintenance Technician decision-making flow diagram, and implementation of risk based decision-making training. The benefit of this study is to save the airline industry revenue by preventing poor decision-making practices that result in inefficient maintenance actions and aircraft incidents and accidents.

A Bayesian Model and Stochastic Exposure (Dose) Estimation for Relative Exposure Risk Comparison Involving Asbestos-Containing Dropped Ceiling Panel Installation and Maintenance Tasks.

PubMed

Boelter, Fred W; Xia, Yulin; Persky, Jacob D

2017-09-01

Assessing exposures to hazards in order to characterize risk is at the core of occupational hygiene. Our study examined dropped ceiling systems commonly used in schools and commercial buildings and lay-in ceiling panels that may have contained asbestos prior to the mid to late 1970s. However, most ceiling panels and tiles do not contain asbestos. Since asbestos risk relates to dose, we estimated the distribution of eight-hour TWA concentrations and one-year exposures (a one-year dose equivalent) to asbestos fibers (asbestos f/cc-years) for five groups of workers who may encounter dropped ceilings: specialists, generalists, maintenance workers, nonprofessional do-it-yourself (DIY) persons, and other tradespersons who are bystanders to ceiling work. Concentration data (asbestos f/cc) were obtained through two exposure assessment studies in the field and one chamber study. Bayesian and stochastic models were applied to estimate distributions of eight-hour TWAs and annual exposures (dose). The eight-hour TWAs for all work categories were below current and historic occupational exposure limits (OELs). Exposures to asbestos fibers from dropped ceiling work would be categorized as "highly controlled" for maintenance workers and "well controlled" for remaining work categories, according to the American Industrial Hygiene Association exposure control rating system. Annual exposures (dose) were found to be greatest for specialists, followed by maintenance workers, generalists, bystanders, and DIY. On a comparative basis, modeled dose and thus risk from dropped ceilings for all work categories were orders of magnitude lower than published exposures for other sources of banned friable asbestos-containing building material commonly encountered in construction trades. © 2016 The Authors Risk Analysis published by Wiley Periodicals, Inc. on behalf of Society for Risk Analysis.

Strategic Gang Scheduling for Railroad Maintenance

DOT National Transportation Integrated Search

2012-08-14

We address the railway track maintenance scheduling problem. The problem stems from the : significant percentage of the annual budget invested by the railway industry for maintaining its railway : tracks. The process requires consideration of human r...

Coping with Deferred Maintenance.

ERIC Educational Resources Information Center

Suber, L. Terry

1982-01-01

The deferred maintenance problem on college and university campuses is addressed. Deferred maintenance refers to larger or more expansive maintenance work that can be delayed and is not performed when needed or reported, usually because its cost is beyond the annual maintenance and operating budget of the physical plant department. Eventually…

Operation and maintenance of the SOL-DANCE building solar system. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

1980-07-29

The Sol-Dance building solar heating system consists of 136 flat plate solar collectors divided evenly into two separate building systems, each providing its total output to a common thermal storage tank. An aromatic base transformer oil is circulated through a closed loop consisting of the collectors and a heat exchanger. Water from the thermal storage tank is passed through the same heat exchanger where heat from the oil is given up to the thermal storage. Back-up heat is provided by air source heat pumps. Heat is transferred from the thermal storage to the living space by liquid-to-air coils in themore » distribution ducts. Separate domestic hot water systems are provided for each building. The system consists of 2 flat plate collectors with a single 66 gallon storage tank with oil circulated in a closed loop through an external tube and shell heat exchanger. Some problems encountered and lessons learned during the project construction are listed as well as beneficial aspects and a project description. As-built drawings are provided as well as system photographs. An acceptance test plan is provided that checks the collection, thermal storage, and space and water heating subsystems and the total system installation. Predicted performance data are tabulated. Details are discussed regarding operation, maintenance, and repair, and manufacturers data are provided. (LEW)« less

Adherence to hemodialysis dietary sodium recommendations: influence of patient characteristics, self-efficacy, and perceived barriers.

PubMed

Clark-Cutaia, Maya N; Ren, Dianxu; Hoffman, Leslie A; Burke, Lora E; Sevick, Mary Ann

2014-03-01

To identify characteristics of hemodialysis patients most likely to experience difficulty adhering to sodium restrictions associated with their dietary regimen. Secondary analysis using baseline data from an ongoing randomized clinical trial examining the effects of a technology-supported behavioral intervention on dietary sodium intake in hemodialysis patients. Thirteen dialysis centers in southwestern Pennsylvania. We included 122 participants (61% women; 48% African American) aged 61 ± 14 years undergoing maintenance, intermittent hemodialysis for end-stage renal disease. Normalized dietary sodium intake, adjusted interdialytic weight gain, perceived problems, and self-efficacy for restricting dietary sodium. Younger participants were more likely to report problems managing their hemodialysis diet and low self-efficacy for restricting sodium intake. Consistent with these findings, younger participants had a higher median sodium intake and higher average adjusted interdialytic weight gain. Females reported more problems managing their diet. Race, time on dialysis, and perceived income adequacy did not seem to influence outcome measures. Our findings suggest that patients who are younger and female encounter more difficulty adhering to the hemodialysis regimen. Hence, there may be a need to individualize counseling and interventions for these individuals. Further investigation is needed to understand the independent effects of age and gender on adherence to hemodialysis dietary recommendations and perceived self-efficacy. Copyright © 2014 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.

The European Cystic Fibrosis Society Patient Registry: valuable lessons learned on how to sustain a disease registry.

PubMed

Viviani, Laura; Zolin, Anna; Mehta, Anil; Olesen, Hanne Vebert

2014-06-07

Disease registries have the invaluable potential to provide an insight into the natural history of the disease under investigation, to provide useful information (e.g. through health indicators) for planning health care services and to identify suitable groups of patients for clinical trials enrolment. However, the establishment and maintenance of disease registries is a burdensome initiative from economical and organisational points of view and experience sharing on registries management is important to avoid waste of resources. The aim of this paper is to discuss the problems embedded in the institution and management of an international disease registry to warn against common mistakes that can derail the best of intentions: we share the experience of the European Cystic Fibrosis Society Patient Registry, which collects data on almost 30,000 patients from 23 countries. We discuss the major problems that researchers often encounter in the creation and management of disease registries: definition of the aims the registry has to reach, definition of the criteria for patients referral to the registry, definition of the information to record, set up of a data quality process, handling of missing data, maintenance of data confidentiality, regulation of data use and dissemination of research results. We give examples on how many crucial aspects were solved by the European Cystic Fibrosis Society Patient Registry regarding objectives, inclusion criteria and variables definition, data management, data quality controls, missing data handling, confidentiality maintenance, data use and results dissemination. We suggest an extensive literature research and discussions in working groups with different stake holders, including patient representatives, on the objectives, inclusion criteria and the information to record. We propose to pilot the recording of few variables and test the applicability of their definition first. The use of a shared electronic platform for data collection that automatically computes derived variables, and automatically performs basic data quality controls is a good data management practice, that also helps in reducing missing data. We found crucial for success the collaboration with existing national and international registries, cystic fibrosis organisations and patients' associations.

The European Cystic Fibrosis Society Patient Registry: valuable lessons learned on how to sustain a disease registry

PubMed Central

2014-01-01

Background Disease registries have the invaluable potential to provide an insight into the natural history of the disease under investigation, to provide useful information (e.g. through health indicators) for planning health care services and to identify suitable groups of patients for clinical trials enrolment. However, the establishment and maintenance of disease registries is a burdensome initiative from economical and organisational points of view and experience sharing on registries management is important to avoid waste of resources. The aim of this paper is to discuss the problems embedded in the institution and management of an international disease registry to warn against common mistakes that can derail the best of intentions: we share the experience of the European Cystic Fibrosis Society Patient Registry, which collects data on almost 30,000 patients from 23 countries. Methods We discuss the major problems that researchers often encounter in the creation and management of disease registries: definition of the aims the registry has to reach, definition of the criteria for patients referral to the registry, definition of the information to record, set up of a data quality process, handling of missing data, maintenance of data confidentiality, regulation of data use and dissemination of research results. Results We give examples on how many crucial aspects were solved by the European Cystic Fibrosis Society Patient Registry regarding objectives, inclusion criteria and variables definition, data management, data quality controls, missing data handling, confidentiality maintenance, data use and results dissemination. Conclusions We suggest an extensive literature research and discussions in working groups with different stake holders, including patient representatives, on the objectives, inclusion criteria and the information to record. We propose to pilot the recording of few variables and test the applicability of their definition first. The use of a shared electronic platform for data collection that automatically computes derived variables, and automatically performs basic data quality controls is a good data management practice, that also helps in reducing missing data. We found crucial for success the collaboration with existing national and international registries, cystic fibrosis organisations and patients’ associations. PMID:24908055

Defer Maintenance, Invite Disaster

ERIC Educational Resources Information Center

Bowman, William W.

1977-01-01

An AGB- and NACUBO-sponsored survey showed that "wish lists" are accumulating overdue major maintenance projects because energy costs are consuming physical plant budgets. Problem areas are discussed: budget "guesstimation," preventive maintenance, deferred maintenance inventory, the APPA accounting format, resource allocation,…

Oxytocin modulates social distance between males and females.

PubMed

Scheele, Dirk; Striepens, Nadine; Güntürkün, Onur; Deutschländer, Sandra; Maier, Wolfgang; Kendrick, Keith M; Hurlemann, René

2012-11-14

In humans, interpersonal romantic attraction and the subsequent development of monogamous pair-bonds is substantially predicted by influential impressions formed during first encounters. The prosocial neuropeptide oxytocin (OXT) has been identified as a key facilitator of both interpersonal attraction and the formation of parental attachment. However, whether OXT contributes to the maintenance of monogamous bonds after they have been formed is unclear. In this randomized placebo-controlled trial, we provide the first behavioral evidence that the intranasal administration of OXT stimulates men in a monogamous relationship, but not single ones, to keep a much greater distance (~10-15 cm) between themselves and an attractive woman during a first encounter. This avoidance of close personal proximity occurred in the physical presence of female but not male experimenters and was independent of gaze direction and whether the female experimenter or the subject was moving. We further confirmed this unexpected finding using a photograph-based approach/avoidance task that showed again that OXT only stimulated men in a monogamous relationship to approach pictures of attractive women more slowly. Importantly, these changes cannot be attributed to OXT altering the attitude of monogamous men toward attractive women or their judgments of and arousal by pictures of them. Together, our results suggest that where OXT release is stimulated during a monogamous relationship, it may additionally promote its maintenance by making men avoid signaling romantic interest to other women through close-approach behavior during social encounters. In this way, OXT may help to promote fidelity within monogamous human relationships.

Analysis of the Problems Encountered in Education of Teachers and Solution Recommendations in Accordance with the Opinions of Faculty of Education Students

ERIC Educational Resources Information Center

Sahan, Gülsün

2016-01-01

The purpose of this study is to put forth the problems encountered in education of teachers and solution recommendations in accordance with the opinions of faculty of education students. Within this framework, the opinions of 182 first grade students from the departments of classroom, social sciences, science and mathematics teaching at Bartin…

CONTEMPORARY SITUATIONS AND PROBLEMS OF ROAD/BRIDGE MAINTENANCE TECHNICAL COOPERATION PROJECTS

NASA Astrophysics Data System (ADS)

Nishimiya, Noriaki; Sanui, Kazumasa; Mizota, Yuzo

It is widely acknowledged that roads are the most important transport infrastructure in developing countries. Unlike railroads requiring organizations and systems to operate, individuals can drive on roads. Almost all donors have assisted developing countr ies for new road constructions and rehabilitations. Report of insufficient maintenance in the developing countries, however, has been notable. As a result of the maintenance problems, deterioration of roads is pr ogressing with speed more than expected. It causes the traffic safety problems and an obstacle of economic development. JICA and other donors recognize that this situation can not be overlooked and reci pient countries are increasing their expectation of obtaining assistance on road/bridge maintenance. JICA has implemented over 10 technical cooper ation projects for road/b ridge maintenance in developing countries. JICA conducted a study to review those projects comprehensively. That study aims at obtaining problems, lessons learned and discussion material for policy making and method improvement for future similar pr ojects. This report introduces the outline of the study including additional analysis and recommendations by the authors.

LESSONS LEARNED IN OPERATING THE HOSE-IN-HOSE SYSTEM FOR TRANSFSERRING SLUDGE AT HANFORDS K-BASINS

DOE Office of Scientific and Technical Information (OSTI.GOV)

PERES MW

In May 2007, the Department of Energy and the Fluor Hanford K Basin Closure Project completed transferring sludge from the K East Basin to new containers in the K West Basin using a Hose-in-Hose system. This project presented a number of complex and unique technical, operational, and management challenges that had to be resolved to complete the required transfers and satisfy project milestones. The project team (including DOE; regulators; and Fluor management, operations, maintenance, engineering and all other support organizations) found innovative solutions to each challenge. This paper records lessons learned during the operational phase of the sludge transfer viamore » the Hose-In-Hose system. The subject is limited to the operational phase and does not cover design, development, testing or turnover. A discussion of the situation or problem encountered is provided, along with the lesson learned as applicable to a future program or project.« less

Dermatitis and aircrew.

PubMed

Leggat, Peter A; Smith, Derek R

2006-01-01

Dermatitis is a common problem both in the workplace and in the general community. Airline personnel represent a novel occupational group as they are also exposed to a wide range of potential chemical irritants and other aggravating factors, such as low relative humidity and airborne pollutants. Common skin irritants include dielectric fluids from electrodischarge machining, 'prepreg' materials and sealants in aircraft manufacture, kerosene and various jet-fuel components. Commercial jet fuel is a complex mixture of aliphatic and aromatic compounds, and there is potential for dermal exposure among refueling and maintenance crew. Low relative humidity appears to exacerbate dermatitis amongst aircrew, especially on longer flight durations. Pilots may also be exposed to additional skin irritants outside of the cabin environment, such as ethylene glycol, hydraulic fluid or jet fuel, all of which may be encountered during routine inspections of aircraft before and after flight. Given these factors, preventive measures must carefully consider the undoubted potential for contact with irritants and allergens, which may lead to dermatitis in airline personnel.

The work of nurses in Australian general practice: A national survey.

PubMed

Joyce, Catherine M; Piterman, Leon

2011-01-01

Following recent reforms to Australia's health system, nurses now comprise a significant and growing sector of the Australian primary care workforce, but there is little data describing the services they provide. This study aimed to describe the patient consultations of nurses in Australian general practice, including patient characteristics, reasons for the consultation, treatments provided and other actions taken. The study was a national cross-sectional survey, with each participating nurse collecting information about 50 nurse-patient encounters. General practice settings in all regions of Australia. 108 nurses volunteered in response to advertisements and 104 returned completed study materials. Participants included Registered (Division 1) and Enrolled (Division 2) nurses working in a general practice setting. Data were collected between May 2007 and May 2008 using a profile questionnaire and a series of encounter forms. Information was gathered on reasons for encounter, patient characteristics, and actions taken. Data were classified using the International Classification of Primary Care. The final data set included 5,253 nurse-patient encounters. 37.2% of patients (95% CI 33.3-41.2) were aged 65 and over, and 57.1% were female (95% CI 54.9-59.5). The majority of encounters (90.7%) were with existing patients of the practice (95% CI 89.1-92.7). The most common reasons for encounter were general and unspecified problems (35.4 per 100 encounters; 95% CI 31.8-39.1), followed by skin-related problems (20.0; 95% CI 17.3-22.8), and cardiovascular problems (11.0; 95% CI 8.7-13.3). Common management actions included medical examinations (20.7 per 100 encounters), immunisations (22.5), diagnostic tests (10.6), and dressings (15.8). Approximately 30% of encounters involved advice-giving. The findings confirm the generalist nature of the General Practice Nurse role, with a wide range of patient types and clinical conditions. There is a clear influence of current funding and organisational arrangements on work patterns, with tasks that have specific funding (including immunisations and wound care) featuring prominently in nurses' work. Whilst nurses' rates for presenting conditions were similar to doctors at a general level, specific actions taken and problems managed differed. New policy reforms in Australia are supporting greater flexibility in the General Practice Nurse role, maximising efficient use of nurses' skills in the primary health care context. Copyright © 2010 Elsevier Ltd. All rights reserved.

Maintenance problems associated with the operation of the F402 /Pegasus/ engine in the AV-8A /Harrier/ aircraft

NASA Technical Reports Server (NTRS)

Stanley, C. W.; Hood, W. E.

1981-01-01

The U.S. Marine Corp (USMC) has been operating the only V/STOL attack aircraft in the western world since 1971. Some of the maintenance problems experienced are related to the unique V/STOL design criteria of the Pegasus engine. However, the major part of the required maintenance effort is found to involve the more conventional engine problems. A description of the aircraft engine is provided and the problems resulting from V/STOL design demands are examined. Attention is given to the fuel system control, the engine air bleed, foreign object damage to the hp compressor, and the engine exhaust system.

Determining problems experienced by student nurses in their work with clinical educators in Turkey.

PubMed

Elcigil, Ayfer; Yildirim Sari, Hatice

2007-07-01

Clinical education is considered an indispensable and vital part of nursing education. Educators have an important role in the successful completion of a student's clinical education. The clinical educator's approach, experience and knowledge have an influence on the students. Students encounter certain problems during their clinical practice under the supervision of educators. This study was conducted to determine the nature of the problems student nurses encounter during clinical training in Turkey. The focus-group interviews were used for this study. Three groups of 8, a total group of 24, composed of students completing their third year were included in the interviews. The students in this study had completed their practical training in the departments of internal medicine, surgery, pediatrics, psychiatry and public health. Among the problems mostly encountered by students, as established by the study, were inadequate assessment by the clinical educator, judgment, negative feedback, communication problems, inadequate guidance and overload. At the end of the research, recommendations were that educators should offer information in the direction of student expectations, increase their positive feedback and lighten the academic workload of these students.

Performance Contracting: Meeting the Challenge of Deferred Maintenance.

ERIC Educational Resources Information Center

Singer, Terry E.; Johnson, Mary E.

2001-01-01

Discusses the magnitude of the problem of deferred maintenance on today's university campuses and the solving this problem using performance-based energy efficiency retrofit as implemented by energy service companies (ESCO). Several case studies of ESCO designed retrofits are examined. (GR)

Maintenance Performance System (Organizational). Operating Manual Maintenance Management Information System for Division 86

DTIC Science & Technology

1984-01-01

performance, diagnosing performance problems, taking corrective actions, and providing training. This report provides instructions for operating the maintenance management information system of MPS-O.

The Library and Human Memory. Final Report on Mechanized Information Services in the University Library, Phase I - Planning. Part 13.

ERIC Educational Resources Information Center

Norman, Donald A.

This paper discusses the differences between the storage problems encountered in a large library and those encountered in the human memory. Some of the properties of the human memory system and some of the major issues which affect the interaction between human users and the existing library systems are outlined. The problem of browsing is used as…

The Deep Space Network

NASA Technical Reports Server (NTRS)

1975-01-01

The primary objectives during this portion of the extended mission were to assure survival of the spacecraft for a third Mercury encounter through conservation of attitude control gas and to conduct trajectory correction maneuvers (TCMs) as necessary to target the spacecraft for a solar occultation zone pass. Special support activities included TCMs 6 and 7 conducted on October 30, 1974 and on February 12-13, 1975, respectively. This period also saw the DSN interface organization involved in (1) the allocation of sufficient coverage to assure accurate orbit determination solutions, (2) monitoring of DSN implementation for Viking to assure maintenance of compatible interfaces and capabilities required for Mariner 10, and (3) the development of encounter coverage, sequences, and readiness test plans.

Outcomes of planetary close encounters - A systematic comparison of methodologies

NASA Technical Reports Server (NTRS)

Greenberg, Richard; Carusi, Andrea; Valsecchi, G. B.

1988-01-01

Several methods for estimating the outcomes of close planetary encounters are compared on the basis of the numerical integration of a range of encounter types. An attempt is made to lay the foundation for the development of predictive rules concerning the encounter outcomes applicable to the refinement of the statistical mechanics that apply to planet-formation and similar problems concerning planetary swarms. Attention is given to Oepik's (1976) formulation of the two-body approximation, whose predicted motion differs from the correct three-body behavior.

Voices from the bush: remote area nurses prioritise hazards that contribute to violence in their workplace.

PubMed

McCullough, K M; Williams, A M; Lenthall, S

2012-01-01

Remote Area Nurses (RANs) in Australia frequently encounter hazards that contribute to violence in the work place. Resources to deal with this problem are limited. Adopting a risk management approach and using the Delphi method, a panel of expert RANs (n=10) from geographically diverse communities across Australia, identified and prioritised hazards that increase the risk of violence to nurses. This descriptive study found that RANs encounter a wide variety of hazards from a variety of sources. Environmental hazards are complicated by living in remote areas and practicing in different locations. Relationships between the nurse and the community can be complex and lack of experience and organisational support may contribute to an increased risk of violence. Hazards prioritised as 'major' or 'extreme' risks included: clinic maintenance and security features, attending to patients at staff residences, RAN inexperience and lack of knowledge about the community, as well as intoxicated clients with mental health issues. A work culture that accepts verbal abuse as 'part of the job' was identified as a significant organisational risk to RANs. A lack of action from management when hazards are identified by clinic staff and insufficient recognition of the risk of violence by employers were also significant hazards. Further consideration of the hazards described in this study following the risk management process, may provide opportunities to reduce the risk of violence towards RANs. Proposed control measures should be developed in consultation with RANs and the remote communities they work in.

African american women, hair care, and health barriers.

PubMed

Gathers, Raechele Cochran; Mahan, Meredith Grace

2014-09-01

The objective of this study was to elucidate the prevalence of hair loss among African American women; explore the psychosocial impact of hair grooming difficulties; and examine both perceptions related to physician encounters in this group and the relationship between hair grooming, physical activity, and weight maintenance. An anonymous retrospective and qualitative survey, the Hair Care Assessment Survey, is an 18-question novel survey instrument designed at the Henry Ford Hospital Department of Dermatology Multicultural Dermatology Center. The Hair Care Assessment Survey was distributed at church-related functions at predominantly African American metropolitan Detroit churches. Two hundred African American women from metropolitan Detroit, Michigan, aged 21 to 83. The Hair Care Assessment Survey collected data relating to hair loss and hair care, psychosocial experiences relating to hair loss, and hair care as it relates to exercise and body weight management. Data was collected on doctor-patient hair-related medical visits and experiences with commercially available ethnic hair care products. More than 50 percent reported excessive hair loss. Twenty-eight percent had visited a physician to discuss hair issues, but only 32 percent felt their physician understood African American hair. Forty-five percent reported avoiding exercise because of hair concerns, and 22 percent felt that their hair impeded maintaining healthy body weight. Hair loss affects a compelling number of African American women, and a significant number express dissatisfaction in hair-related physician encounters. Additionally, hair styling problems present a serious impediment to physical activity and weight management among this already high-risk population.

Maintenance practices for stormwater runoff - phase 2.

DOT National Transportation Integrated Search

2015-04-01

Seven wet detention ponds possessing severe maintenance issues were selected from disparate FDOT : districts. The maintenance problems ranged from excess littoral zone growth and intense algal blooms : to bank erosion and sediment accumulation. Inten...

Technical documentation challenges in aviation maintenance : a proceedings report.

DOT National Transportation Integrated Search

2012-11-01

The 2012 Technical Documentation workshop addressed both problems and solutions associated with technical : documentation for maintenance. These issues are known to cause errors, rework, maintenance delays, other : safety hazards, and FAA administrat...

Optical navigation during the Voyager Neptune encounter

NASA Technical Reports Server (NTRS)

Riedel, J. E.; Owen, W. M., Jr.; Stuve, J. A.; Synnott, S. P.; Vaughan, R. M.

1990-01-01

Optical navigation techniques were required to successfully complete the planetary exploration phase of the NASA deep-space Voyager mission. The last of Voyager's planetary encounters, with Neptune, posed unique problems from an optical navigation standpoint. In this paper we briefly review general aspects of the optical navigation process as practiced during the Voyager mission, and discuss in detail particular features of the Neptune encounter which affected optical navigation. New approaches to the centerfinding problem were developed for both stars and extended bodies, and these are described. Results of the optical navigation data analysis are presented, as well as a description of the optical orbit determination system and results of its use during encounter. Partially as a result of the optical navigation processing, results of scientific significance were obtained. These results include the discovery and orbit determination of several new satellites of Neptune and the determination of the size of Triton, Neptune's largest moon.

P-8A Poseidon Multi Mission Maritime Aircraft (P-8A)

DTIC Science & Technology

2015-12-01

focus also includes procurement of depot and intermediate level maintenance capabilities, full scale fatigue testing, and continued integration and... Level Confidence Level of cost estimate for current APB: 50% The current APB cost estimate provided sufficient resources to execute the program under...normal conditions, encountering average levels of technical, schedule, and programmatic risk and external interference. It was consistent with

Safety management in multiemployer worksites in the manufacturing industry: opinions on co-operation and problems encountered.

PubMed

Nenonen, Sanna; Vasara, Juha

2013-01-01

Co-operation between different parties and effective safety management play an important role in ensuring safety in multiemployer worksites. This article reviews safety co-operation and factors complicating safety management in Finnish multiemployer manufacturing worksites. The paper focuses on the service providers' opinions; however, a comparison of the customers' views is also presented. The results show that safety-related co-operation between providers and customers is generally considered as successful but strongly dependent on the partner. Safety co-operation is provided through, e.g., training, orientation and risk analysis. Problems encountered include ensuring adequate communication, identifying hazards, co-ordinating work tasks and determining responsibilities. The providers and the customers encounter similar safety management problems. The results presented in this article can help companies to focus their efforts on the most problematic points of safety management and to avoid common pitfalls.

Modelling mechanisms of social network maintenance in hunter-gatherers

PubMed Central

Pearce, Eiluned

2014-01-01

Due to decreasing resource densities, higher latitude hunter-gatherers need to maintain their social networks over greater geographic distances than their equatorial counterparts. This suggests that as latitude increases, the frequency of face-to-face interaction decreases for ‘weak tie’ relationships in the outer mating pool (~500-strong) and tribal (~1500-strong) layers of a hunter-gatherer social network. A key question, then, is how a hunter-gatherer tribe sustains coherence as a single identifiable unit given that members are distributed across a large geographic area. The first step in answering this question is to establish whether the expectation that network maintenance raises a challenge for hunter-gatherers is correct, or whether sustaining inter-group contact is in fact trivial. Here I present a null model that represents mobile groups as randomly and independently moving gas particles. The aim of this model is to examine whether face-to-face contact can be maintained with every member of an individual’s tribe at all latitudes even under the baseline assumption of random movement. Contrary to baseline expectations, the number of encounters between groups predicted by the gas model cannot support tribal cohesion and is significantly negatively associated with absolute latitude. In addition, above ~40 degrees latitude random mobility no longer produces a sufficient number of encounters between groups to maintain contact across the 500-strong mating pool. These model predictions suggest that the outermost layers of hunter-gatherers’ social networks may require additional mechanisms of support in the form of strategies that either enhance encounter rates, such as coordinated mobility patterns, or lessen the need for face-to-face interaction, such as the use of symbolic artefacts to represent social affiliations. Given the predicted decline in encounters away from the equator, such additional supports might be most strongly expressed at high latitudes. PMID:25214706

The laser interferometer skin-friction meter - A numerical and experimental study

NASA Technical Reports Server (NTRS)

Murphy, J. D.; Westphal, R. V.

1986-01-01

Limits to the applicability of thin-film lubrication theory are established. The following two problems are considered: (1) the response of the oil film to a time-varying skin friction such as is encountered in turbulent boundary layers, and (2) a 'surface-wave instability' encountered at high skin-friction levels. Results corresponding to the first problem reveal that the laser interferometer skin-friction meter may, in principle, be applied to the measurement of instantaneous skin friction. In addressing the second problem, it is shown that the observed surface waves are not the result of a hydrodynamic instability.

A proactive approach for managing indoor air quality

DOE Office of Scientific and Technical Information (OSTI.GOV)

Greene, R.E.; Casey, J.M.; Williams, P.L.

1997-11-01

Ventilation and maintenance, followed by psychosocial issues, are the factors most often implicated in indoor air quality (IAQ) investigations. The absence of accepted exposure standards and the presence of a wide variety of building designs, ages, ventilation systems, and usages often make IAQ complaint investigations ineffective. Thus, the best approach to achieving IAQ is to prevent problems from occurring. This paper presents the framework for a proactive approach to managing the causes most often implicated in IAQ investigations. It is the aim of this proactive protocol to provide a cost-effective guide for preventing IAQ problems in nonindustrial settings and inmore » buildings for which there are no current IAQ complaints. The proposed protocol focuses on heating, ventilation, and air-conditioning (HVAC) system maintenance and operation; psychosocial factors; and the handling and investigation of complaints. An IAQ manager is designated to implement and manage the protocol. The HVAC system portion of the protocol focuses on proper maintenance of the components often identified as sources of problems in IAQ studies, documentation of the maintenance procedures, and training of individuals responsible for building maintenance. The protocol addresses the psychosocial factors with an environmental survey that rates the occupants` perceptions of the indoor air to identify potential IAQ problems. The psychosocial portion of the protocol also incorporates occupant education and awareness. Finally, a three-step initial investigation procedure for addressing IAQ problems is presented.« less

Physical activity problem-solving inventory for adolescents: Development and initial validation

USDA-ARS?s Scientific Manuscript database

Youth encounter physical activity barriers, often called problems. The purpose of problem-solving is to generate solutions to overcome the barriers. Enhancing problem-solving ability may enable youth to be more physically active. Therefore, a method for reliably assessing physical activity problem-s...

Feeding Ecology Informs Parasite Epidemiology: Prey Selection Modulates Encounter Rate with Echinococcus multilocularis in Urban Coyotes

PubMed Central

Liccioli, Stefano; Bialowas, Carly; Ruckstuhl, Kathreen E.; Massolo, Alessandro

2015-01-01

We investigated the role of urban coyote feeding ecology in the transmission of Echinococcus multilocularis, the causative agent of Alveolar Echinococcosis in humans. As coyotes can play a main role in the maintenance of this zoonotic parasite within North American urban settings, such study can ultimately aid disease risk management. Between June 2012 and June 2013, we collected 251 coyote feces and conducted trapping of small mammals (n = 971) in five parks in the city of Calgary, Alberta, Canada. We investigated E. multilocularis epidemiology by assessing seasonal variations of coyote diet and the selective consumption of different rodent intermediate host species. Furthermore, accounting for small mammal digestibility and coyote defecation rates we estimated the number of small mammal preys ingested by coyote and consequently, coyote encounter rates with the parasite. Dominant food items included small mammals, fruit and vegetation, although hare and deer were seasonally relevant. The lowest frequency of occurrence per scat of small mammals was recorded in winter (39.4 %), when consumption of deer was highest (36.4 %). However, highest encounter rates (number of infected hosts predated/season) with E. multilocularis (95% CI: 1.0 - 22.4), combined with the lack of predation on non-competent small mammal species, suggest that winter is the critical season for transmission and control of this parasite. Within the small mammal assemblage, voles (Microtus pennsylvanicus and Myodes gapperi) were the selected preys of urban coyotes and likely played a key role for the maintenance of the urban sylvatic life-cycle of E. multilocularis in Calgary. PMID:25768437

Feeding ecology informs parasite epidemiology: prey selection modulates encounter rate with Echinococcus multilocularis in urban coyotes.

PubMed

Liccioli, Stefano; Bialowas, Carly; Ruckstuhl, Kathreen E; Massolo, Alessandro

2015-01-01

We investigated the role of urban coyote feeding ecology in the transmission of Echinococcus multilocularis, the causative agent of Alveolar Echinococcosis in humans. As coyotes can play a main role in the maintenance of this zoonotic parasite within North American urban settings, such study can ultimately aid disease risk management. Between June 2012 and June 2013, we collected 251 coyote feces and conducted trapping of small mammals (n = 971) in five parks in the city of Calgary, Alberta, Canada. We investigated E. multilocularis epidemiology by assessing seasonal variations of coyote diet and the selective consumption of different rodent intermediate host species. Furthermore, accounting for small mammal digestibility and coyote defecation rates we estimated the number of small mammal preys ingested by coyote and consequently, coyote encounter rates with the parasite. Dominant food items included small mammals, fruit and vegetation, although hare and deer were seasonally relevant. The lowest frequency of occurrence per scat of small mammals was recorded in winter (39.4%), when consumption of deer was highest (36.4%). However, highest encounter rates (number of infected hosts predated/season) with E. multilocularis (95% CI: 1.0-22.4), combined with the lack of predation on non-competent small mammal species, suggest that winter is the critical season for transmission and control of this parasite. Within the small mammal assemblage, voles (Microtus pennsylvanicus and Myodes gapperi) were the selected preys of urban coyotes and likely played a key role for the maintenance of the urban sylvatic life-cycle of E. multilocularis in Calgary.

Hardware problems encountered in solar heating and cooling systems

NASA Technical Reports Server (NTRS)

Cash, M.

1978-01-01

Numerous problems in the design, production, installation, and operation of solar energy systems are discussed. Described are hardware problems, which range from simple to obscure and complex, and their resolution.

Visualization of Big Data Through Ship Maintenance Metrics Analysis for Fleet Maintenance and Revitalization

DTIC Science & Technology

2014-03-01

BIG DATA THROUGH SHIP MAINTENANCE METRICS ANALYSIS FOR FLEET MAINTENANCE AND REVITALIZATION by Isaac J. Donaldson March 2014 Thesis...March 2014 3. REPORT TYPE AND DATES COVERED Master’s Thesis 4. TITLE AND SUBTITLE VISUALIZATION OF BIG DATA THROUGH SHIP MAINTENANCE METRICS...terms of the overall performance of ship maintenance processes is clearly a big data problem. The current process for presenting data on the more than

Nurses' perceptions and problems in the usability of a medication safety app.

PubMed

Ankem, Kalyani; Cho, Sookyung; Simpson, Diana

2017-10-16

The majority of medication apps support medication adherence. Equally, if not more important, is medication safety. Few apps report on medication safety, and fewer studies have been conducted with these apps. The usability of a medication safety app was tested with nurses to reveal their perceptions of the graphical user interface and to discover problems they encountered in using the app. Usability testing of the app was conducted with RN-BSN students and informatics students (n = 18). Perceptions of the graphical components were gathered in pretest and posttest questionnaires, and video recordings of the usability testing were transcribed. The significance of the difference in mean performance time for 8 tasks was tested, and qualitative analysis was deployed to identify problems encountered and to rate the severity of each problem. While all participants perceived the graphical user interface as easy to understand, nurses took significantly more time to complete certain tasks. More nurses found the medication app to be lacking in intuitiveness of user interface design, in capability to match real-world data, and in providing optimal information architecture. To successfully integrate mobile devices in healthcare, developers must address the problems that nurses encountered in use of the app.

Borescope Inspection Management for Engine

NASA Astrophysics Data System (ADS)

Zhongda, Yuan

2018-03-01

In this paper, we try to explain the problems need to be improved from the two perspectives of maintenance program management and maintenance human risk control. On the basis of optimization analysis of borescope inspection maintenance scheme, the defect characteristics and expansion rules of engine heat terminal components are summarized, and some optimization measures are introduced. This paper analyses human risk problem of engine hole from the aspects of qualification management, training requirements and perfection of system, and puts forward some suggestions on management.

Two-machine flow shop scheduling integrated with preventive maintenance planning

NASA Astrophysics Data System (ADS)

Wang, Shijin; Liu, Ming

2016-02-01

This paper investigates an integrated optimisation problem of production scheduling and preventive maintenance (PM) in a two-machine flow shop with time to failure of each machine subject to a Weibull probability distribution. The objective is to find the optimal job sequence and the optimal PM decisions before each job such that the expected makespan is minimised. To investigate the value of integrated scheduling solution, computational experiments on small-scale problems with different configurations are conducted with total enumeration method, and the results are compared with those of scheduling without maintenance but with machine degradation, and individual job scheduling combined with independent PM planning. Then, for large-scale problems, four genetic algorithm (GA) based heuristics are proposed. The numerical results with several large problem sizes and different configurations indicate the potential benefits of integrated scheduling solution and the results also show that proposed GA-based heuristics are efficient for the integrated problem.

A Survey of Road Construction and Maintenance Problems in Central Alaska.

DTIC Science & Technology

1976-10-01

recent natural disasters, such as the earthquake of 1964 and the Fairbanks flood in 1967, seriously set back the Alaskan highway program for several...problems as classifica- tion of natural road building materials, prevention of culvert icing, measurement of subgrade temperature, maintenance of slopes...Scarcity of clays or other material suitable for use as a binder in gravel surfacings poses additional problems throughout Alaska. Dust and stones

NASA flight cell and battery issues

NASA Technical Reports Server (NTRS)

Schulze, N. R.

1989-01-01

The author presents the important battery and cell problems, encompassing both test failures and accidents, which were encountered during the past year. Practical issues facing programs, which have to be considered in the development of a battery program strategy, are addressed. The problems of one program, the GRO (Gamma Ray Observatory), during the past year are focused on to illustrate the fundamental types of battery problems that occur. Problems encountered by other programs are briefly mentioned to complete the accounting. Two major categories of issues are defined, namely, whose which are quality and design related, i.e., problems having inherent manufacturing-process-related aspects with an impact on cell reliability, and these which are accident triggered or man induced, i.e., those operational issues having an impact on battery and cell reliability.

Product modular design incorporating preventive maintenance issues

NASA Astrophysics Data System (ADS)

Gao, Yicong; Feng, Yixiong; Tan, Jianrong

2016-03-01

Traditional modular design methods lead to product maintenance problems, because the module form of a system is created according to either the function requirements or the manufacturing considerations. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the maintenance related ones. First, modularity parameters and modularity scenarios for product modularity are defined. Then the reliability and economic assessment models of product modularity strategies are formulated with the introduction of the effective working age of modules. A mathematical model used to evaluate the difference among the modules of the product so that the optimal module of the product can be established. After that, a multi-objective optimization problem based on metrics for preventive maintenance interval different degrees and preventive maintenance economics is formulated for modular optimization. Multi-objective GA is utilized to rapidly approximate the Pareto set of optimal modularity strategy trade-offs between preventive maintenance cost and preventive maintenance interval difference degree. Finally, a coordinate CNC boring machine is adopted to depict the process of product modularity. In addition, two factorial design experiments based on the modularity parameters are constructed and analyzed. These experiments investigate the impacts of these parameters on the optimal modularity strategies and the structure of module. The research proposes a new modular design method, which may help to improve the maintainability of product in modular design.

Sex of the GP--20 years on.

PubMed

Harrison, Christopher M; Britt, Helena C; Charles, Janice

2011-08-15

Previous research with the Australian Morbidity and Treatment Survey (1990-1991) showed significant differences in general practitioner characteristics and patient mix of male and female GPs. Even after adjusting for these, it was seen that male and female GPs managed different types of medical conditions. The proportion of female GPs increased from 19.6% in 1990-1991 to 37.1% in 2009-2010. This study investigates whether differences remain two decades later. Analysis of 2009-2010 Bettering the Evaluation and Care of Health (BEACH) data examining GP characteristics, patient encounter characteristics, patient reasons for encounter (RFE), problem types managed and management methods used, by GP sex. Whether GP sex was an independent predictor of problem types being managed, or management methods used, was tested using multiple logistic regressions and Poisson regression. 988 GPs recorded 98 800 GP-patient encounters. Adjusted differences in clinical activity of male and female GPs. After adjustment, compared with male GPs, females recorded more RFEs about general and unspecified issues and endocrine, female genital, pregnancy and family planning problems; and fewer concerning the musculoskeletal, respiratory, skin and male genital systems. Female GPs managed more general and unspecified, digestive, circulatory, psychological, endocrine, female genital and social problems; recorded nearly 20% more clinical treatments and referrals; recorded nearly 10% more imaging and pathology tests; and 4.3% fewer medications. After two decades, even with increased numbers of female GPs, the differences in problems managed by male and female GPs remain, and will probably continue. Female GPs use more resources per encounter, but may not use more resources in terms of annual patient care.

Optimal maintenance of a multi-unit system under dependencies

NASA Astrophysics Data System (ADS)

Sung, Ho-Joon

The availability, or reliability, of an engineering component greatly influences the operational cost and safety characteristics of a modern system over its life-cycle. Until recently, the reliance on past empirical data has been the industry-standard practice to develop maintenance policies that provide the minimum level of system reliability. Because such empirically-derived policies are vulnerable to unforeseen or fast-changing external factors, recent advancements in the study of topic on maintenance, which is known as optimal maintenance problem, has gained considerable interest as a legitimate area of research. An extensive body of applicable work is available, ranging from those concerned with identifying maintenance policies aimed at providing required system availability at minimum possible cost, to topics on imperfect maintenance of multi-unit system under dependencies. Nonetheless, these existing mathematical approaches to solve for optimal maintenance policies must be treated with caution when considered for broader applications, as they are accompanied by specialized treatments to ease the mathematical derivation of unknown functions in both objective function and constraint for a given optimal maintenance problem. These unknown functions are defined as reliability measures in this thesis, and theses measures (e.g., expected number of failures, system renewal cycle, expected system up time, etc.) do not often lend themselves to possess closed-form formulas. It is thus quite common to impose simplifying assumptions on input probability distributions of components' lifetime or repair policies. Simplifying the complex structure of a multi-unit system to a k-out-of-n system by neglecting any sources of dependencies is another commonly practiced technique intended to increase the mathematical tractability of a particular model. This dissertation presents a proposal for an alternative methodology to solve optimal maintenance problems by aiming to achieve the same end-goals as Reliability Centered Maintenance (RCM). RCM was first introduced to the aircraft industry in an attempt to bridge the gap between the empirically-driven and theory-driven approaches to establishing optimal maintenance policies. Under RCM, qualitative processes that enable the prioritizing of functions based on the criticality and influence would be combined with mathematical modeling to obtain the optimal maintenance policies. Where this thesis work deviates from RCM is its proposal to directly apply quantitative processes to model the reliability measures in optimal maintenance problem. First, Monte Carlo (MC) simulation, in conjunction with a pre-determined Design of Experiments (DOE) table, can be used as a numerical means of obtaining the corresponding discrete simulated outcomes of the reliability measures based on the combination of decision variables (e.g., periodic preventive maintenance interval, trigger age for opportunistic maintenance, etc.). These discrete simulation results can then be regressed as Response Surface Equations (RSEs) with respect to the decision variables. Such an approach to represent the reliability measures with continuous surrogate functions (i.e., the RSEs) not only enables the application of the numerical optimization technique to solve for optimal maintenance policies, but also obviates the need to make mathematical assumptions or impose over-simplifications on the structure of a multi-unit system for the sake of mathematical tractability. The applicability of the proposed methodology to a real-world optimal maintenance problem is showcased through its application to a Time Limited Dispatch (TLD) of Full Authority Digital Engine Control (FADEC) system. In broader terms, this proof-of-concept exercise can be described as a constrained optimization problem, whose objective is to identify the optimal system inspection interval that guarantees a certain level of availability for a multi-unit system. A variety of reputable numerical techniques were used to model the problem as accurately as possible, including algorithms for the MC simulation, imperfect maintenance model from quasi renewal processes, repair time simulation, and state transition rules. Variance Reduction Techniques (VRTs) were also used in an effort to enhance MC simulation efficiency. After accurate MC simulation results are obtained, the RSEs are generated based on the goodness-of-fit measure to yield as parsimonious model as possible to construct the optimization problem. Under the assumption of constant failure rate for lifetime distributions, the inspection interval from the proposed methodology was found to be consistent with the one from the common approach used in industry that leverages Continuous Time Markov Chain (CTMC). While the latter does not consider maintenance cost settings, the proposed methodology enables an operator to consider different types of maintenance cost settings, e.g., inspection cost, system corrective maintenance cost, etc., to result in more flexible maintenance policies. When the proposed methodology was applied to the same TLD of FADEC example, but under the more generalized assumption of strictly Increasing Failure Rate (IFR) for lifetime distribution, it was shown to successfully capture component wear-out, as well as the economic dependencies among the system components.

Solving Power Tool Problems in the School Shop

ERIC Educational Resources Information Center

Irvin, Daniel W.

1976-01-01

The school shop instructor is largely responsible for the preventive maintenance of power tools. These preventive measures primarily involve proper alignment, good lubrication, a reasonable maintenance program, and good operating procedures. Suggestions for maintenance of specific equipment is provided. (Author/BP)

Maintenance of Mechanical Services. Maintenance and Renewal in Educational Buildings. Building Bulletin 70.

ERIC Educational Resources Information Center

Haworth-Roberts, A., Ed.

School building maintenance must find an appropriate balance between planned and reactive work in order to conserve costs. This document provides ways in which authorities can assess their maintenance requirements and make better use of the resources available. It considers how to deal with problems which have their roots in historical design…

The Mariner Mars 1971 radio frequency subsystem

NASA Technical Reports Server (NTRS)

Hughes, R. S.

1972-01-01

The radio frequency subsystem (RFS) for the Mariner Mars 1971 (MM'71) spacecraft is described. The MM'69 RFS was used as the baseline design for the MM'71 RFS, and the report describes the design changes made to the 1969 RFS for use on MM'71. It also cites various problems encountered during the fabrication and testing of the RFS, as well as the types of tests to which the RFS was subjected. In areas where significant problems were encountered, a detailed description of the problem and its solution is presented. In addition, some recommendations are given for modifications to the RFS and test techniques for future programs.

Decreasing inventory of a cement factory roller mill parts using reliability centered maintenance method

NASA Astrophysics Data System (ADS)

Witantyo; Rindiyah, Anita

2018-03-01

According to data from maintenance planning and control, it was obtained that highest inventory value is non-routine components. Maintenance components are components which procured based on maintenance activities. The problem happens because there is no synchronization between maintenance activities and the components required. Reliability Centered Maintenance method is used to overcome the problem by reevaluating maintenance activities required components. The case chosen is roller mill system because it has the highest unscheduled downtime record. Components required for each maintenance activities will be determined by its failure distribution, so the number of components needed could be predicted. Moreover, those components will be reclassified from routine component to be non-routine component, so the procurement could be carried out regularly. Based on the conducted analysis, failure happens in almost every maintenance task are classified to become scheduled on condition task, scheduled discard task, schedule restoration task and no schedule maintenance. From 87 used components for maintenance activities are evaluated and there 19 components that experience reclassification from non-routine components to routine components. Then the reliability and need of those components were calculated for one-year operation period. Based on this invention, it is suggested to change all of the components in overhaul activity to increase the reliability of roller mill system. Besides, the inventory system should follow maintenance schedule and the number of required components in maintenance activity so the value of procurement will be decreased and the reliability system will increase.

Analyzing machine noise for real time maintenance

NASA Astrophysics Data System (ADS)

Yamato, Yoji; Fukumoto, Yoshifumi; Kumazaki, Hiroki

2017-02-01

Recently, IoT technologies have been progressed and applications of maintenance area are expected. However, IoT maintenance applications are not spread in Japan yet because of one-off solution of sensing and analyzing for each case, high cost to collect sensing data and insufficient maintenance automation. This paper proposes a maintenance platform which analyzes sound data in edges, analyzes only anomaly data in cloud and orders maintenance automatically to resolve existing technology problems. We also implement a sample application and compare related work.

Further Studies of the Response of Single Rotor Helicopters to Vortex Encounters

DOT National Transportation Integrated Search

1985-09-01

This report is a continuation of the studies described in Reference where a simplified approach to the problem of predicting the uncontrolled response of a single rotor helicopter to an encounter with the wing tip vortex of a large transport aircraft...

Energy Problems and Environmental Concern

ERIC Educational Resources Information Center

Train, Russell E.

1973-01-01

Discusses problems encountered in energy extraction and consumption, involving nuclear power plant construction, environmental consequences of energy systems, and energy conservation ethics. Indicates that the increasing concern over environmental quality is not the true cause of present energy problems. (CC)

HFL-10 lifting body flight control system characteristics and operational experience

NASA Technical Reports Server (NTRS)

Painter, W. D.; Sitterle, G. J.

1974-01-01

A flight evaluation was made of the mechanical hydraulic flight control system and the electrohydraulic stability augmentation system installed in the HL-10 lifting body research vehicle. Flight tests performed in the speed range from landing to a Mach number of 1.86 and the altitude range from 697 meters (2300 feet) to 27,550 meters (90,300 feet) were supplemented by ground tests to identify and correct structural resonance and limit-cycle problems. Severe limit-cycle and control sensitivity problems were encountered during the first flight. Stability augmentation system structural resonance electronic filters were modified to correct the limit-cycle problem. Several changes were made to control stick gearing to solve the control sensitivity problem. Satisfactory controllability was achieved by using a nonlinear system. A limit-cycle problem due to hydraulic fluid contamination was encountered during the first powered flight, but the problem did not recur after preflight operations were improved.

Landscaping With Maintenance in Mind.

ERIC Educational Resources Information Center

Sorensen, Randy

2000-01-01

Examines school ground landscape design that enhances attractive of the school and provides for easier maintenance. Landscape design issues discussed include choice of grass, trees, and shrubs; irrigation; and safety and access. Other considerations for lessening maintenance problems for facility managers are also highlighted. (GR)

Deferred Maintenance.

ERIC Educational Resources Information Center

DeLong, Richard A.

1984-01-01

Unusually hard hit by the 1970s recession, the University of Michigan accumulated more deferred maintenance problems than could be analyzed efficiently either by hand or with existing computer systems. Using an existing microcomputer and a database management software package, the maintenance service developed its own database to support…

Ambulatory EHR functionality: a comparison of functionality lists.

PubMed

Drury, Barbara M

2006-01-01

There is a proliferation of lists intended to define and clarify the functionality of an ambulatory electronic health record system. These lists come from both private and public entities and vary in terminology, granularity, usability, and comprehensiveness. For example, functionality regarding a problem list includes the following possible definitions: * "Create and maintain patient-specific problem lists," from the HL7 Electronic Health Record Draft Standard for Trial Use. * "Provide a flexible mechanism for retrieval of encounter information that can be organized by diagnosis, problem, problem type," from the Bureau of Primary Health Care. * "The system shall associate encounters, orders, medications and notes with one or more problems," from the Certification Commission on Health Information Technology. * "Displays dates of problems on problem list," from COPIC Insurance Co. * "Shall automatically close acute problems using an automated algorithm," from the Physicians Foundations HIT Subcommittee. This article will compare the attributes of these five electronic health record functionality lists and their usefulness to different audiences-clinicians, application developers and payers.

Ergonomic problems encountered by the surgical team during video endoscopic surgery.

PubMed

Kaya, Oskay I; Moran, Munevver; Ozkardes, Alper B; Taskin, Emre Y; Seker, Gaye E; Ozmen, Mahir M

2008-02-01

The aim of this study is to analyze the problems related to the ergonomic conditions faced by video endoscopic surgical teams during video endoscopic surgery by means of a questionnaire. A questionnaire was distributed to 100 medical personnel, from 8 different disciplines, who performed video endoscopic surgeries. Participants were asked to answer 13 questions related to physical, perceptive, and cognitive problems. Eighty-two questionnaires were returned. Although there were differences among the disciplines, participants assessment of various problems ranged from 32% to 72% owing to poor ergonomic conditions. As the problems encountered by the staff during video endoscopic surgery and the poor ergonomic conditions of the operating room affect the productivity of the surgical team and the safety and efficiency of the surgery, redesigning of the instruments and the operating room is required.

Research requirements to reduce maintenance costs of civil helicopters

NASA Technical Reports Server (NTRS)

Million, D. J.; Waters, K. T.

1978-01-01

The maintenance problems faced by the operators of civil helicopters that result in high costs are documented. Existing technology that can be applied to reduce maintenance costs and research that should be carried out were identified. Good design practice and application of existing technology were described as having a significant impact on reducing maintenance costs immediately. The research and development that have potential for long range reduction of maintenance costs are presented.

Orthopaedic Problems of the Mentally Retarded

ERIC Educational Resources Information Center

McSweeney, Anthony

1972-01-01

Problems encountered by orthopedic surgeons treating the mentally retarded are identified, and cooperation among pediatricians, psychiatrists, psychologists, social workers, physiotherapists, occupational therapists, and orthopedic surgeons is recommended. (GW)

CD4 T-Cell Memory Generation and Maintenance

PubMed Central

Gasper, David J.; Tejera, Melba Marie; Suresh, M.

2014-01-01

Immunologic memory is the adaptive immune system's powerful ability to remember a previous antigen encounter and react with accelerated vigor upon antigen re-exposure. It provides durable protection against reinfection with pathogens and is the foundation for vaccine-induced immunity. Unlike the relatively restricted immunologic purview of memory B cells and CD8 T cells, the field of CD4 T-cell memory must account for multiple distinct lineages with diverse effector functions, the issue of lineage commitment and plasticity, and the variable distribution of memory cells within each lineage. Here, we discuss the evidence for lineage-specific CD4 T-cell memory and summarize the known factors contributing to memory-cell generation, plasticity, and long-term maintenance. PMID:24940912

Combining virtual reality and multimedia techniques for effective maintenance training

NASA Astrophysics Data System (ADS)

McLin, David M.; Chung, James C.

1996-02-01

This paper describes a virtual reality (VR) system developed for use as part of an integrated, low-cost, stand-alone, multimedia trainer. The trainer is used to train National Guard personnel in maintenance and trouble-shooting tasks for the M1A1 Abrams tank, the M2A2 Bradley fighting vehicle and the TOW II missile system. The VR system features a modular, extensible, object-oriented design which consists of a training monitor component, a VR run time component, a model loader component, and a set of domain-specific object behaviors which mimic the behavior of objects encountered in the actual vehicles. The VR system is built from a combination of off-the-shelf commercial software and custom software developed at RTI.

Deferred Maintenance.

ERIC Educational Resources Information Center

Kaiser, Harvey H.

1980-01-01

Facilities maintenance is seen as the most important item on the agenda of education in the 1980s. Definite action has been taken to identify deferred maintenance needs of several state systems and private colleges. Identifying and defining the problem is discussed along with comprehensive facilities management and survey guidelines. (MLW)

Methodological Problems Encountered in the Review of Research in Science Teaching

ERIC Educational Resources Information Center

Lawlor, E. P.; Lawlor, F. X.

1972-01-01

Describes the difficulties encountered in selecting material to be included in the reviews of science education research in the Curtis Series'' published by the Columbia Teachers' College Press. Presents evidence outlining the weaknesses of using a jury'' to determine so-called superior research. (AL)

Developing Multiplicative Thinking from Additive Reasoning

ERIC Educational Resources Information Center

Tobias, Jennifer M.; Andreasen, Janet B.

2013-01-01

As students progress through elementary school, they encounter mathematics concepts that shift from additive to multiplicative situations (NCTM 2000). When they encounter fraction problems that require multiplicative thinking, they tend to incorrectly extend additive properties from whole numbers (Post et al. 1985). As a result, topics such as …

Clue Insensitivity in Remote Associates Test Problem Solving

ERIC Educational Resources Information Center

Smith, Steven M.; Sifonis, Cynthia M.; Angello, Genna

2012-01-01

Does spreading activation from incidentally encountered hints cause incubation effects? We used Remote Associates Test (RAT) problems to examine effects of incidental clues on impasse resolution. When solution words were seen incidentally 3-sec before initially unsolved problems were retested, more problems were resolved (Experiment 1). When…

CPR Drilling.

ERIC Educational Resources Information Center

Kittleson, Mark

1980-01-01

Problems encountered by cardiopulmonary resuscitation (CPR) instructors are discussed and some possible solutions to these problems are suggested. Management techniques for effective use of class size, time, and instructional materials are described. (JN)

Application of affinity propagation algorithm based on manifold distance for transformer PD pattern recognition

NASA Astrophysics Data System (ADS)

Wei, B. G.; Huo, K. X.; Yao, Z. F.; Lou, J.; Li, X. Y.

2018-03-01

It is one of the difficult problems encountered in the research of condition maintenance technology of transformers to recognize partial discharge (PD) pattern. According to the main physical characteristics of PD, three models of oil-paper insulation defects were set up in laboratory to study the PD of transformers, and phase resolved partial discharge (PRPD) was constructed. By using least square method, the grey-scale images of PRPD were constructed and features of each grey-scale image were 28 box dimensions and 28 information dimensions. Affinity propagation algorithm based on manifold distance (AP-MD) for transformers PD pattern recognition was established, and the data of box dimension and information dimension were clustered based on AP-MD. Study shows that clustering result of AP-MD is better than the results of affinity propagation (AP), k-means and fuzzy c-means algorithm (FCM). By choosing different k values of k-nearest neighbor, we find clustering accuracy of AP-MD falls when k value is larger or smaller, and the optimal k value depends on sample size.

Natural gas the new locomotive fuel

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tuskey, L.W.

1984-01-01

This is a report on modification of a locomotive diesel engine to a dual-fuel engine to determine if the dual fuel engine in railway service will provide high performance, lower fuel and maintenance costs. After the locomotive was modified and the new governor and linkage were installed by General Motors at the BN's Northtown Diesel Shop near Minneapolis, the locomotive went through startup procedures. General Motors participated in startup. Some calibration, adjustments and minor piping changes were required but in general the problems encountered in startups were quite insignificant. The locomotive was connected to the load box (static test) duringmore » startup and at 720 RPM exceeded the required output for this test as established by the parties. Operation on straight oil over the range from idle through No. 8 throttle notch and on dual fuel from No. 5 through No. 8 throttle notch was smooth as was the transfer from oil to gas and from gas to oil. The engine exhaust on straight oil was almost clear but on gas it was totally clear. 16 references, 3 figures, 4 tables.« less

Analysis of Maintenance Service Contracts for Dump Trucks Used in Mining Industry with Simulation Approach

NASA Astrophysics Data System (ADS)

Dymasius, A.; Wangsaputra, R.; Iskandar, B. P.

2016-02-01

A mining company needs high availability of dump trucks used to haul mining materials. As a result, an effective maintenance action is required to keep the dump trucks in a good condition and hence reducing failure and downtime of the dump trucks. To carry out maintenance in-house requires a high intensive maintenance facility and high skilled maintenance specialists. Often, outsourcing maintenance is an economic option for the company. An external agent takes a proactive action with offering some maintenance contract options to the owner. The decision problem for the owner is to decide the best option and for the agent is to determine the optimal price for each option offered. A non-cooperative game-theory is used to formulate the decision problems for the owner and the agent. We consider that failure pattern of each truck follows a non-homogeneous Poisson process (NHPP) and a queueing theory with multiple servers is used to estimate the downtime. As it involves high complexity to model downtime using a queueing theory, then in this paper we use a simulation method. Furthermore, we conduct experiment to seek for the best number of maintenance facilities (servers) which minimises maintenance and penalty costs incurred to the agent.

African American Women, Hair Care, and Health Barriers

PubMed Central

Mahan, Meredith Grace

2014-01-01

Objectives: The objective of this study was to elucidate the prevalence of hair loss among African American women; explore the psychosocial impact of hair grooming difficulties; and examine both perceptions related to physician encounters in this group and the relationship between hair grooming, physical activity, and weight maintenance. Design: An anonymous retrospective and qualitative survey, the Hair Care Assessment Survey, is an 18-question novel survey instrument designed at the Henry Ford Hospital Department of Dermatology Multicultural Dermatology Center. Setting: The Hair Care Assessment Survey was distributed at church-related functions at predominantly African American metropolitan Detroit churches. Participants: Two hundred African American women from metropolitan Detroit, Michigan, aged 21 to 83. Measurements: The Hair Care Assessment Survey collected data relating to hair loss and hair care, psychosocial experiences relating to hair loss, and hair care as it relates to exercise and body weight management. Data was collected on doctor-patient hair-related medical visits and experiences with commercially available ethnic hair care products. Results: More than 50 percent reported excessive hair loss. Twenty-eight percent had visited a physician to discuss hair issues, but only 32 percent felt their physician understood African American hair. Forty-five percent reported avoiding exercise because of hair concerns, and 22 percent felt that their hair impeded maintaining healthy body weight. Conclusion: Hair loss affects a compelling number of African American women, and a significant number express dissatisfaction in hair-related physician encounters. Additionally, hair styling problems present a serious impediment to physical activity and weight management among this already high-risk population. PMID:25276273

Stick with a School Maintenance Plan

ERIC Educational Resources Information Center

Kennedy, Mike

2012-01-01

The U.S. Department of Education's "Planning Guide for Maintaining School Facilities" states that a sound facilities maintenance plan serves as evidence that school facilities are, and will be, cared for appropriately. On the other hand, negligent facilities maintenance planning can cause real problems. Budget restraints and cuts in…

Time Trends in the Family Physician Management of Insomnia: The Australian Experience (2000-2015).

PubMed

Miller, Christopher B; Valenti, Lisa; Harrison, Christopher M; Bartlett, Delwyn J; Glozier, Nick; Cross, Nathan E; Grunstein, Ronald R; Britt, Helena C; Marshall, Nathaniel S

2017-06-15

To evaluate changes in rates of family physician (FP) management of insomnia in Australia from 2000-2015. The Bettering the Evaluation And Care of Health (BEACH) program is a nationally representative cross-sectional survey of 1,000 newly randomly sampled family physicians' activity in Australia per year, who each record details of 100 consecutive patient encounters. This provided records of approximately 100,000 encounters each year. We identified all encounters with patients older than 15 years where insomnia or difficulty sleeping was managed and assessed trends in these encounters from 2000-2015. There was no change in the management rate of insomnia from 2000-2007 (1.54 per 100 encounters [95% confidence interval [CI]: 1.49-1.58]). This rate was lower from 2008-2015 (1.31 per 100 encounters [95% CI: 1.27-1.35]). There was no change in FP management: pharmacotherapy was used in approximately 90% of encounters; nonpharmacological advice was given at approximately 20%; and onward referral at approximately 1% of encounters. Prescription of temazepam changed from 54.6 [95% CI: 51.4-57.9] per 100 insomnia problems in 2000-2001 to 43.6 [95% CI: 40.1-47.0] in 2014-2015, whereas zolpidem increased steadily from introduction in 2000 to 14.6 [95% CI: 12.2-17.1] per 100 insomnia problems in 2006-2007, and then decreased to 7.3 [95% CI: 5.4-9.2] by 2014-2015. Insomnia management frequency decreased after 2007 in conjunction with ecologically associated Australian media reporting of adverse effects linked to zolpidem use. Australian FPs remain reliant on pharmacotherapy for the management of insomnia. © 2017 American Academy of Sleep Medicine

Challenges Encountered by 17 Autistic Young Adults in Hong Kong

ERIC Educational Resources Information Center

Wong, Shui-wai

2017-01-01

The self-portrayals of 17 young persons with autism spectrum disorder reveal the challenges encountered by them, including study problems, inter-personal relationships, being bullied by classmates at school, discrimination by the public in general and teachers, social workers, and peers in particular, obstacles to post-secondary education,…

Value of Family and Group Counseling Models where Grandparents Function as Parents to Their Grandchildren

ERIC Educational Resources Information Center

Edwards, Oliver W.; Ray, Shannon L.

2010-01-01

Those involved in circumstances in which children are raised by their grandparents often encounter serious problems that require assistance from counselors. Research suggests that grandparents and parents in these families typically experience heightened stress and psychosocial distress. Additionally, the children often encounter behavioral,…

Israeli Adolescents and Military Service: Encounters.

ERIC Educational Resources Information Center

Levy, Amihay; And Others

1987-01-01

Asserts that inadequate attention has been paid to the problems of the young soldier entering army life in Israel. Delineates some areas of friction and vulnerability between the worlds of the youth and the military. Describes the systematization of these encounters into groups, creating the "Binary Model," which helps in locating and…

"What constitutes a 'problem'?" Producing 'alcohol problems' through online counselling encounters.

PubMed

Savic, Michael; Ferguson, Nyssa; Manning, Victoria; Bathish, Ramez; Lubman, Dan I

2017-08-01

Typically, health policy, practice and research views alcohol and other drug (AOD) 'problems' as objective things waiting to be detected, diagnosed and treated. However, this approach to policy development and treatment downplays the role of clinical practices, tools, discourses, and systems in shaping how AOD use is constituted as a 'problem'. For instance, people might present to AOD treatment with multiple psycho-social concerns, but usually only a singular AOD-associated 'problem' is considered serviceable. As the assumed nature of 'the serviceable problem' influences what treatment responses people receive, and how they may come to be enacted as 'addicted' or 'normal' subjects, it is important to subject clinical practices of problem formulation to critical analysis. Given that the reach of AOD treatment has expanded via the online medium, in this article we examine how 'problems' are produced in online alcohol counselling encounters involving people aged 55 and over. Drawing on poststructural approaches to problematisation, we not only trace how and what 'problems' are produced, but also what effects these give rise to. We discuss three approaches to problem formulation: (1) Addiction discourses at work; (2) Moving between concerns and alcohol 'problems'; (3) Making 'problems' complex and multiple. On the basis of this analysis, we argue that online AOD counselling does not just respond to pre-existing 'AOD problems'. Rather, through the social and clinical practices of formulation at work in clinical encounters, online counselling also produces them. Thus, given a different set of circumstances, practices and relations, 'problems' might be defined or emerge differently-perhaps not as 'problems' at all or perhaps as different kinds of concerns. We conclude by highlighting the need for a critical reflexivity in AOD treatment and policy in order to open up possibilities for different ways of engaging with, and responding to, people's needs in their complexity. Copyright © 2017 Elsevier B.V. All rights reserved.

Strategy Keys as Tools for Problem Solving

ERIC Educational Resources Information Center

Herold-Blasius, Raja

2017-01-01

Problem solving is one of the main competences we seek to teach students at school for use in their future lives. However, when dealing with mathematical problems, teachers encounter a wide variety of difficulties. To foster students' problem-solving skills, the authors developed "strategy keys." Strategy keys can serve as material to…

The development of a computerized maintenance management system at the New York State Department of Environmental Conservation

Treesearch

Francis V. Riedy; Daniel Skelton

1998-01-01

Every asset, old or new, requires maintenance. Buildings, bridges, roads, dams, utilities and grounds; each requires some degree of maintenance to ensure long life cycles and safe operation. Maintenance is science, art and philosophy. It is science since its execution ultimately relies on most of all the sciences; it is art because seemingly identical problems...

Planification de la maintenance d'un parc de turbines-alternateurs par programmation mathematique

NASA Astrophysics Data System (ADS)

Aoudjit, Hakim

A growing number of Hydro-Quebec's hydro generators are at the end of their useful life and maintenance managers fear to face a number of overhauls exceeding what can be handled. Maintenance crews and budgets are limited and these withdrawals may take up to a full year and mobilize significant resources in addition to the loss of electricity production. In addition, increased export sales forecasts and severe production patterns are expected to speed up wear that can lead to halting many units at the same time. Currently, expert judgment is at the heart of withdrawals which rely primarily on periodic inspections and in-situ measurements and the results are sent to the maintenance planning team who coordinate all the withdrawals decisions. The degradations phenomena taking place is random in nature and the prediction capability of wear using only inspections is limited to short-term at best. A long term planning of major overhauls is sought by managers for the sake of justifying and rationalizing budgets and resources. The maintenance managers are able to provide a huge amount of data. Among them, is the hourly production of each unit for several years, the repairs history on each part of a unit as well as major withdrawals since the 1950's. In this research, we tackle the problem of long term maintenance planning for a fleet of 90 hydro generators at Hydro-Quebec over a 50 years planning horizon period. We lay a scientific and rational framework to support withdrawals decisions by using part of the available data and maintenance history while fulfilling a set of technical and economic constraints. We propose a planning approach based on a constrained optimization framework. We begin by decomposing and sorting hydro generator components to highlight the most influential parts. A failure rate model is developed to take into account the technical characteristics and unit utilization. Then, replacement and repair policies are evaluated for each of the components then strategies are derived for the whole unit. Traditional univariate policies such as the age replacement policy and the minimal repair policy are calculated. These policies are extended to build alternative bivariate maintenance policy as well as a repair strategy where the state of a component after a repair is rejuvenated by a constant coefficient. These templates form the basis for the calculation of objective function for the scheduling problem. On one hand, this issue is treated as a nonlinear problem where the objective is to minimize the average total maintenance cost per unit of time on an infinite horizon for the fleet with technical and economic constraints. A formulation is also proposed in the case of a finite time horizon. In the event of electricity production variation, and given that the usage profile is known, the influence of production scenarios is reflected on the unit's components through their failure rate. In this context, prognoses on possible resources problems are made by studying the characteristics of the generated plans. On the second hand, the withdrawals are now subjected to two decision criteria. In addition to minimizing the average total maintenance cost per unit of time on an infinite time horizon, the best achievable reliability of remaining turbo generators is sought. This problem is treated as a biobjective nonlinear optimization problem. Finally a series of problems describing multiple contexts are solved for planning renovations of 90 turbo generators units considering 3 major components in each unit and 2 types of maintenance policies for each component.

Guidance on Software Maintenance. Final Report. Reports on Computer Science and Technology.

ERIC Educational Resources Information Center

Martin, Roger J.; Osborne, Wilma M.

Based on informal discussions with personnel at selected federal agencies and private sector organizations and on additional research, this publication addresses issues and problems of software maintenance and suggests actions and procedures which can help software maintenance organizations meet the growing demands of maintaining existing systems.…

Democracy in NGOs: Making the Cooperative Option Work.

ERIC Educational Resources Information Center

Wardle, Chris

1988-01-01

Discusses several problems encountered by nongovernmental organizations (NGOs) that structure themselves as cooperatives, with all members being equal. Presents four problem areas--(1) decision making, (2) meetings, (3) job rotation, and (4) growth--as well as strategies to solve potential problems. (CH)

The Effect of New Vocabulary on Problem Solving in Novice Physics Students.

ERIC Educational Resources Information Center

Sobolewski, Stanley J.

One of the difficulties encountered by novice problem solvers in introductory physics is in the area of problem solving. It has been shown in other studies that poor problem solvers are affected by the surface aspects of the problem in contrast with more efficient problem solvers who are capable of constructing a mental model of the physical…

Problems Implementing Problem-Based Learning by a Private Malaysian University

ERIC Educational Resources Information Center

Tik, Chan Chang

2014-01-01

In this case study the focus is on lecturers' readiness in the design of PBL problems and to facilitate students' learning. This paper also looks into students' readiness in terms of acquiring metacognitive skills and collaborating in group to solve PBL problems. Problems encountered by both lecturers and students are discussed in the context of…

Determining the Performances of Pre-Service Primary School Teachers in Problem Posing Situations

ERIC Educational Resources Information Center

Kilic, Cigdem

2013-01-01

This study examined the problem posing strategies of pre-service primary school teachers in different problem posing situations (PPSs) and analysed the issues they encounter while posing problems. A problem posing task consisting of six PPSs (two free, two structured, and two semi-structured situations) was delivered to 40 participants.…

Folate deficiency in north Indian children undergoing maintenance chemotherapy for acute lymphoblastic leukemia-Implications and outcome.

PubMed

Roy Moulik, Nirmalya; Kumar, Archana; Agrawal, Suraksha; Mahdi, Abbas Ali

2018-01-01

Treatment-related toxicity and mortality are not uncommon during maintenance chemotherapy for childhood acute lymphoblastic leukemia (ALL), especially in the low- and middle-income countries (LMIC). Undernutrition and micronutrient deficiencies are commonly seen in children from LMICs undergoing treatment for ALL. The present study examines the prevalence and clinical implications of folate deficiency in north Indian children with ALL during the maintenance phase of treatment in view of prolonged antifolate treatment and high population prevalence of folate deficiency. Pre-cycle folate levels/deficiency as well as weight for age z-score and serum albumin level were determined and correlated with complications of treatment and mortality encountered during the maintenance phase of treatment. Twenty-nine of 52 children enrolled in the study had folate deficiency at some point during maintenance chemotherapy. Neutropenia (18 of 29 vs. 4 of 23; P = 0.002), thrombocytopenia (17 of 29 vs. 4 of 23; P = 0.005), febrile neutropenia (17 of 29 vs. 4 of 23; P = 0.005), and need for chemotherapy dose reduction (20 of 29 vs. 7 of 21; P = 0.01) were more common in folate-deficient children. Maintenance deaths were higher (8 of 29 vs. 1 of 23; P = 0.03) and survival lower (P = 0.02) in deficient children. In multivariate analysis, hypoalbuminemia (P = 0.02) and folate deficiency (P = 0.01) were associated with febrile neutropenia, and folate deficiency with maintenance deaths (P = 0.03). Folate deficiency was associated with treatment-related complications and adverse outcome in our patients. The risks and benefits of folate supplementation in deficient children during maintenance chemotherapy need to be explored with properly designed randomized studies in similar settings. © 2017 Wiley Periodicals, Inc.

Maintenance Deferred.

ERIC Educational Resources Information Center

Kennedy, Mike

2000-01-01

Discusses how colleges and universities are scrambling to catch up on deferred maintenance before the backlog becomes overwhelming. The problems, and some solutions, for acquiring repair funding and collecting needs data are addressed. (GR)

Problems in the Development of Incentive Programs

ERIC Educational Resources Information Center

Rhodes, Warren

1977-01-01

Discusses problems that often occur in the implementation and maintenance of incentive programs in residential institutions for adolescents. Suggests recommendations for overcoming these problems. (MS)

3D printing human induced pluripotent stem cells with novel hydroxypropyl chitin bioink: scalable expansion and uniform aggregation.

PubMed

Li, Yang; Jiang, Xulin; Li, Ling; Chen, Zhi-Nan; Gao, Ge; Yao, Rui; Sun, Wei

2018-06-28

Human induced pluripotent stem cells (hiPSCs) are more likely to successfully avoid the immunological rejection and ethical problems that are often encountered by human embryonic stem cells in various stem cell studies and applications. To transfer hiPSCs from the laboratory to clinical applications, researchers must obtain sufficient cell numbers. In this study, 3D cell printing was used as a novel method for iPSC scalable expansion. Hydroxypropyl chitin (HPCH), utilized as a new type of bioink, and a set of optimized printing parameters were shown to achieve high cell survival (> 90%) after the printing process and high proliferation efficiency (~ 32.3 folds) during subsequent 10-day culture. After the culture, high levels of pluripotency maintenance were recognized by both qualitative and quantitative detections. Compared with static suspension (SS) culture, hiPSC aggregates formed in 3D printed constructs showed a higher uniformity in size. Using novel dual-fluorescent labelling method, hiPSC aggregates in the constructs were found more inclined to form by <i>in situ</i> proliferation rather than multicellular aggregation. This study revealed unique advantages of non-ionic crosslinking bioink material HPCH, including high gel strength and rapid temperature response in hiPSC printing, and achieved primed state hiPSC printing for the first time. Features achieved in this study, such as high cell yield, high pluripotency maintenance and uniform aggregation provide good foundations for further hiPSC studies on 3D micro-tissue differentiation and drug screening. © 2018 IOP Publishing Ltd.

The feasibility of paper-based Tracking Codes and electronic medical record systems to monitor tobacco-use assessment and intervention in an Individual Practice Association (IPA) Model health maintenance organization (HMO).

PubMed

Bentz, Charles J; Davis, Nancy; Bayley, Bruce

2002-01-01

Despite evidence of its effectiveness, tobacco cessation is not systematically addressed in routine healthcare settings. Its measurement is part of the problem. A pilot study was designed to develop and implement two different tobacco tracking systems in two independent primary care offices that participated in an IPA Model health maintenance organization in Portland, Oregon. The first clinic, which utilized a paper-based charting system, implemented CPT-like tracking codes to measure and report tobacco-cessation activities, which were eventually included in the managed-care organization's (MCO) claims database. The second clinic implemented an electronic tracking system based on its computerized electronic medical record (EMR) charting system. This paper describes the pilot study, including the processes involved in building provider acceptance for the new tracking systems in these two clinics, the barriers and successes encountered during implementation, and the resources expended by the clinics and by the MCO during the pilot. The findings from the 3-month implementation period were that documentation of tobacco-use status remained stable at 42-45% in the paper-based clinic and increased from 79% to 88% in the EMR clinic. This pilot study demonstrated that Tracking Codes are a feasible preventive-care tracking system in paper-based medical offices. However, high levels of effort and support are needed, and a critical mass of insurers and health plans would need to adopt Tracking Codes before widespread use could be expected. Results of the EMR-based tracking system are also reviewed and discussed.

Helping Students Navigate Faith Challenges in the Biblical Studies Classroom

ERIC Educational Resources Information Center

Sharp, Carolyn J.; Clark-Soles, Jaime

2012-01-01

What happens when students encounter the academic study of the Bible in the seminary or undergraduate classroom? Does a teacher have a responsibility to help students navigate challenges to Christian faith that might arise? What pedagogical problems and opportunities does this encounter present? How does this issue manifest differently in…

Tips for Novice Researchers: Operational Difficulties Encountered in Underdeveloped Countries.

ERIC Educational Resources Information Center

Belcher El-Nahhas, Susan M.

This paper provides a general overview of the type of problems encountered in the field of research so that individuals who are contemplating conducting research in an underdeveloped country for the first time are better prepared, and hence, better able to complete their research. The paper recounts a female researcher's personal experiences in…

Doctor-patient communication on the telephone.

PubMed

Curtis, P; Evens, S

1989-01-01

Since its invention, the telephone has been an important tool in medical practice, particularly for primary care physicians. Approximately half the calls made to a physician's office during regular consulting hours are for clinical problems and most are handled effectively over the phone without an immediate office visit. Telephone encounters are generally very brief, and managing such calls requires a pragmatic approach that is often quite different from the approach taken in the office visit. The telephone encounter should be recognized and recorded as a specific medical interaction in the medical chart for both clinical and legal reasons. Effective telephone encounters depend on good communication skills; decision making regarding disposition is a major goal. The physician's perception of a medical problem may be different from the patient's; patients are frequently seeking advice and reassurance rather than diagnosis and treatment, and may call because of anxiety and psychological stress. For physicians and their families who are not prepared for after-hours telephone encounters, calls that interrupt more "legitimate" activities may result in anger or frustration for the physician and dissatisfaction for the patient.

Problem-Solving Examples as Interactive Learning Objects for Educational Digital Libraries

ERIC Educational Resources Information Center

Brusilovsky, Peter; Yudelson, Michael; Hsiao, I-Han

2009-01-01

The paper analyzes three major problems encountered by our team as we endeavored to turn problem solving examples in the domain of programming into highly reusable educational activities, which could be included as first class objects in various educational digital libraries. It also suggests three specific approaches to resolving these problems,…

ADOPTING THE PROBLEM BASED LEARNING APPROACH IN A GIS PROJECT MANAGEMENT CLASS

EPA Science Inventory

Problem Based Learning (PBL) is a process that emphasizes the need for developing problem solving skills through hands-on project formulation and management. A class adopting the PBL method provides students with an environment to acquire necessary knowledge to encounter, unders...

Maintaining Limited-Range Connectivity Among Second-Order Agents

DTIC Science & Technology

2016-07-07

we consider ad-hoc networks of robotic agents with double integrator dynamics. For such networks, the connectivity maintenance problems are: (i) do...hoc networks of mobile autonomous agents. This loose ter- minology refers to groups of robotic agents with limited mobility and communica- tion...connectivity can be preserved. 3.1. Networks of robotic agents with second-order dynamics and the connectivity maintenance problem. We begin by

Industrial relations: workings of the maintenance strike.

PubMed

Davidson, N

1978-11-10

The frustrations leading to the maintenance dispute go back four years. Author highlights the NHS's inability to handle internal disagreements, and the problems of a bureaucratic and politically-directed profession.

Problems in Evaluating Adult Literacy Programmes.

ERIC Educational Resources Information Center

Rajyalakshmi, C.

1980-01-01

The study of the Functional Literacy Program in India encountered problems of opposition to evaluation, inappropriate respondents, and difficulties in contacting participants, which point to changes that should be made in the evaluation methods. (SK)

76 FR 6054 - Use of Less-Than-Lethal Force: Delegation

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-03

... report any medical problems encountered by subjects being subdued and arrested, and no medical problems.... Therefore, for accuracy in terminology, we replace the term ``non-lethal'' with the more accurate term...

Common statistical and research design problems in manuscripts submitted to high-impact psychiatry journals: what editors and reviewers want authors to know.

PubMed

Harris, Alex H S; Reeder, Rachelle; Hyun, Jenny K

2009-10-01

Journal editors and statistical reviewers are often in the difficult position of catching serious problems in submitted manuscripts after the research is conducted and data have been analyzed. We sought to learn from editors and reviewers of major psychiatry journals what common statistical and design problems they most often find in submitted manuscripts and what they wished to communicate to authors regarding these issues. Our primary goal was to facilitate communication between journal editors/reviewers and researchers/authors and thereby improve the scientific and statistical quality of research and submitted manuscripts. Editors and statistical reviewers of 54 high-impact psychiatry journals were surveyed to learn what statistical or design problems they encounter most often in submitted manuscripts. Respondents completed the survey online. The authors analyzed survey text responses using content analysis procedures to identify major themes related to commonly encountered statistical or research design problems. Editors and reviewers (n=15) who handle manuscripts from 39 different high-impact psychiatry journals responded to the survey. The most commonly cited problems regarded failure to map statistical models onto research questions, improper handling of missing data, not controlling for multiple comparisons, not understanding the difference between equivalence and difference trials, and poor controls in quasi-experimental designs. The scientific quality of psychiatry research and submitted reports could be greatly improved if researchers became sensitive to, or sought consultation on frequently encountered methodological and analytic issues.

Preventive Maintenance Study: A Key Component in Engineering Education to Enhance Industrial Productivity and Competitiveness.

ERIC Educational Resources Information Center

Nachlas, Joel A.; Cassady, C. Richard

1999-01-01

Suggests that a chief contributor to the continued economic success of the western economies will be the productivity gains available through efficient preventative maintenance planning and argues for appropriate changes in engineering curricula. Describes the formulation of maintenance planning problems and illustrates with numerical examples the…

School Renovation and the Importance of Maintenance. [Interview with Charles Boney, Jr.].

ERIC Educational Resources Information Center

Butterfield, Eric

Charles Boney, Jr., Director of Boney Architects, offers his views on school districts that build schools that have to be replaced too soon, general problems concerning renovation of older buildings, and keeping maintenance costs down. He discusses the types of flooring materials school districts should consider using to lower maintenance costs…

On the preventive management of sediment-related sewer blockages: a combined maintenance and routing optimization approach.

PubMed

Fontecha, John E; Akhavan-Tabatabaei, Raha; Duque, Daniel; Medaglia, Andrés L; Torres, María N; Rodríguez, Juan Pablo

In this work we tackle the problem of planning and scheduling preventive maintenance (PM) of sediment-related sewer blockages in a set of geographically distributed sites that are subject to non-deterministic failures. To solve the problem, we extend a combined maintenance and routing (CMR) optimization approach which is a procedure based on two components: (a) first a maintenance model is used to determine the optimal time to perform PM operations for each site and second (b) a mixed integer program-based split procedure is proposed to route a set of crews (e.g., sewer cleaners, vehicles equipped with winches or rods and dump trucks) in order to perform PM operations at a near-optimal minimum expected cost. We applied the proposed CMR optimization approach to two (out of five) operative zones in the city of Bogotá (Colombia), where more than 100 maintenance operations per zone must be scheduled on a weekly basis. Comparing the CMR against the current maintenance plan, we obtained more than 50% of cost savings in 90% of the sites.

Qualitative Analysis for Maintenance Process Assessment

NASA Technical Reports Server (NTRS)

Brand, Lionel; Kim, Yong-Mi; Melo, Walcelio; Seaman, Carolyn; Basili, Victor

1996-01-01

In order to improve software maintenance processes, we first need to be able to characterize and assess them. These tasks must be performed in depth and with objectivity since the problems are complex. One approach is to set up a measurement-based software process improvement program specifically aimed at maintenance. However, establishing a measurement program requires that one understands the problems to be addressed by the measurement program and is able to characterize the maintenance environment and processes in order to collect suitable and cost-effective data. Also, enacting such a program and getting usable data sets takes time. A short term substitute is therefore needed. We propose in this paper a characterization process aimed specifically at maintenance and based on a general qualitative analysis methodology. This process is rigorously defined in order to be repeatable and usable by people who are not acquainted with such analysis procedures. A basic feature of our approach is that actual implemented software changes are analyzed in order to understand the flaws in the maintenance process. Guidelines are provided and a case study is shown that demonstrates the usefulness of the approach.

Health profiles of foreigners attending primary care clinics in Malaysia.

PubMed

Ab Rahman, Norazida; Sivasampu, Sheamini; Mohamad Noh, Kamaliah; Khoo, Ee Ming

2016-06-14

The world population has become more globalised with increasing number of people residing in another country for work or other reasons. Little is known about the health profiles of foreign population in Malaysia. The aim of this study was to provide a detailed description of the health problems presented by foreigners attending primary care clinics in Malaysia. Data were derived from the 2012 National Medical Care Survey (NMCS), a cross sectional survey of primary care encounters from public and private primary care clinics sampled from five regions in Malaysia. Patients with foreign nationality were identified and analysed for demographic profiles, reasons for encounter (RFEs), diagnosis, and provision of care. Foreigners accounted for 7.7 % (10,830) of all patient encounters from NMCS. Most encounters were from private clinics (90.2 %). Median age was 28 years (IQR: 24.0, 34.8) and 69.9 % were male. Most visits to the primary care clinics were for symptom-based complaints (69.5 %), followed by procedures (23.0 %) and follow-up visit (7.4 %). The commonest diagnosis in public clinics was antenatal care (21.8 %), followed by high risk pregnancies (7.5 %) and upper respiratory tract infection (URTI) (6.8 %). Private clinics had more cases for general medical examination (13.5 %), URTI (13.1 %) and fever (3.9 %). Medications were prescribed to 76.5 % of these encounters. More foreigners were seeking primary medical care from private clinics and the encounters were for general medical examinations and acute minor ailments. Those who sought care from public clinics were for obstetric problems and chronic diseases. Medications were prescribed to two-thirds of the encounters while other interventions: laboratory investigations, medical procedures and follow-up appointment had lower rates in private clinics. Foreigners are generally of young working group and are expected to have mandatory medical checks. The preponderance of obstetrics seen in public clinics suggests a need for improved access to maternal care and pregnancy related care. This has implication on policy and health care provision and access for foreigners and future studies are needed to look into strategies to solve these problems.

Applications of remote sensing to water resources

NASA Technical Reports Server (NTRS)

1977-01-01

Analyses were made of selected long-term (1985 and beyond) objectives, with the intent of determining if significant data-related problems would be encountered and to develop alternative solutions to any potential problems. One long-term objective selected for analysis was Water Availability Forecasting. A brief overview was scheduled in FY-77 of the objective -- primarily a fact-finding study to allow Data Management personnel to gain adequate background information to perform subsequent data system analyses. This report, includes discussions on some of the larger problems currently encountered in water measurement, the potential users of water availability forecasts, projected demands of users, current sensing accuracies, required parameter monitoring, status of forecasting modeling, and some measurement accuracies likely to be achievable by 1980 and 1990.

Learning Impasses in Problem Solving

NASA Technical Reports Server (NTRS)

Hodgson, J. P. E.

1992-01-01

Problem Solving systems customarily use backtracking to deal with obstacles that they encounter in the course of trying to solve a problem. This paper outlines an approach in which the possible obstacles are investigated prior to the search for a solution. This provides a solution strategy that avoids backtracking.

Using CAS to Solve Classical Mathematics Problems

ERIC Educational Resources Information Center

Burke, Maurice J.; Burroughs, Elizabeth A.

2009-01-01

Historically, calculus has displaced many algebraic methods for solving classical problems. This article illustrates an algebraic method for finding the zeros of polynomial functions that is closely related to Newton's method (devised in 1669, published in 1711), which is encountered in calculus. By exploring this problem, precalculus students…

Improving Audio Quality in Distance Learning Applications.

ERIC Educational Resources Information Center

Richardson, Craig H.

This paper discusses common causes of problems encountered with audio systems in distance learning networks and offers practical suggestions for correcting the problems. Problems and discussions are divided into nine categories: (1) acoustics, including reverberant classrooms leading to distorted or garbled voices, as well as one-dimensional audio…

Beyond Utility Targeting: Toward Axiological Air Operations

DTIC Science & Technology

2000-01-01

encounter the leader- sociopath , bereft of values, quite willing to live underground in hiding and in- sensitive to the absence of human comforts...that is a mere one thousand value-analysis problems to begin solving. A more difficult problem to solve is the problem of the leader- sociopath

Deferred Maintenance Strategies You Must Try.

ERIC Educational Resources Information Center

Sturgeon, Julie

2000-01-01

Discusses how some college administrators have found "over-the-counter" cures for deferred maintenance problems resulting from budgeting shortfalls. Catch-up approaches discussed include those involving planning, prioritizing, partnering, and gift giving. (GR)

Fix and forget or fix and report: a qualitative study of tensions at the front line of incident reporting.

PubMed

Hewitt, Tanya Anne; Chreim, Samia

2015-05-01

Practitioners frequently encounter safety problems that they themselves can resolve on the spot. We ask: when faced with such a problem, do practitioners fix it in the moment and forget about it, or do they fix it in the moment and report it? We consider factors underlying these two approaches. We used a qualitative case study design employing in-depth interviews with 40 healthcare practitioners in a tertiary care hospital in Ontario, Canada. We conducted a thematic analysis, and compared the findings with the literature. 'Fixing and forgetting' was the main choice that most practitioners made in situations where they faced problems that they themselves could resolve. These situations included (A) handling near misses, which were seen as unworthy of reporting since they did not result in actual harm to the patient, (B) prioritising solving individual patients' safety problems, which were viewed as unique or one-time events and (C) encountering re-occurring safety problems, which were framed as inevitable, routine events. In only a few instances was 'fixing and reporting' mentioned as a way that the providers dealt with problems that they could resolve. We found that generally healthcare providers do not prioritise reporting if a safety problem is fixed. We argue that fixing and forgetting patient safety problems encountered may not serve patient safety as well as fixing and reporting. The latter approach aligns with recent calls for patient safety to be more preventive. We consider implications for practice. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

The BAPE 2 balloon-borne CO2

NASA Technical Reports Server (NTRS)

Degnan, J. J.; Walker, H. E.; Peruso, C. J.; Johnson, E. H.; Klein, B. J.; Mcelroy, J. H.

1972-01-01

The systems and techniques which were utilized in the experiment to establish an air-to-ground CO2 laser heterodyne link are described along with the successes and problems encountered when the heterodyne receiver and laser transmitter package were removed from the controlled environment of the laboratory. Major topics discussed include: existing systems and the underlying principles involved in their operation; experimental techniques and optical alignment methods which were found to be useful; theoretical calculations of signal strengths expected under a variety of test conditions and in actual flight; and the experimental results including problems encountered and their possible solutions.

Interim report : a non-overlay cathodic protection system.

DOT National Transportation Integrated Search

1983-01-01

This interim report describes Virginia's experience in installing its first cathodic protection system for a bridge deck. The installation was completed with practically no problems. Very minor problems have been encountered with the rectifier/contro...

Investigation of fatigue by Australian general practice registrars: a cross-sectional study.

PubMed

Morgan, Simon; Henderson, Kim M; Tapley, Amanda; Thomson, Allison; Wilson, Jessica; Scott, John; Spike, Neil A; McArthur, Lawrie; van Driel, Mieke L; Magin, Parker J

2015-06-01

Fatigue is the most common undifferentiated problem presenting in general practice. Previous studies have shown that this presentation leads to multiple investigations. There is no published literature describing the management of patients with fatigue by general practice (GP) registrars. To document the investigation-ordering behaviour of GP registrars in managing patients with a new diagnosis of unexplained fatigue. This was a cross-sectional analysis of data from Registrar Clinical Encounters in Training (ReCEnT), an ongoing cohort study of GP registrars' consultations. We established the prevalence of new diagnoses of unexplained fatigue and associations with that diagnosis, the rate of test ordering and the number and types of investigations ordered. 644 registrars contributed data from 68 986 encounters. In 0.78% of patient encounters, a new diagnosis of unexplained fatigue was made. Pathology was ordered in 78.4% of these problems (versus 18.1% in non-fatigue problems), at a rate of 488 tests per 100 new fatigue problems. Our study suggests that unexplained fatigue elicits a non-rational approach to test ordering by registrars. These findings contribute to the understanding of GP registrar management of fatigue, and undifferentiated presentations more broadly, and suggest educational approaches to improve practice, including dealing with uncertainty.

Scheduling Jobs and a Variable Maintenance on a Single Machine with Common Due-Date Assignment

PubMed Central

Wan, Long

2014-01-01

We investigate a common due-date assignment scheduling problem with a variable maintenance on a single machine. The goal is to minimize the total earliness, tardiness, and due-date cost. We derive some properties on an optimal solution for our problem. For a special case with identical jobs we propose an optimal polynomial time algorithm followed by a numerical example. PMID:25147861

Prevention of VOC releases from bridge painting operations.

DOT National Transportation Integrated Search

2007-06-01

Bridge maintenance painting employs solvent-based coatings that generate volatile organic compounds (VOCs) that contribute to air-quality problems. Methods for capturing VOCs during normal Kentucky Transportation Cabinet (KYTC) maintenance painting o...

Role of Enhancing Visual Effects Education Delivery to Encounter Career Challenges in Malaysia

ERIC Educational Resources Information Center

Ng, Lynn-Sze

2017-01-01

Problem-based Learning (PBL) is one of the most effective methods of instruction that helps Visual Effects (VFX) students to be more adaptable at encountering career challenges in Malaysia. These challenges are; lack of several important requirements such as, the basic and fundamental knowledge of VFX concepts, the ability to understand real-world…

Problem Solving Skills for Children.

ERIC Educational Resources Information Center

Youngs, Bettie B.

This guide was written for children, to help them handle problems they might encounter, learn about other children and how they have handled similar problems, and learn what to do when things go wrong or when they feel misunderstood. In the introduction, children are assured that, even when they have problems, they can be happy again. The body of…

Problem Solving Instruction for Overcoming Students' Difficulties in Stoichiometric Problems

ERIC Educational Resources Information Center

Shadreck, Mandina; Enunuwe, Ochonogor Chukunoye

2017-01-01

The study sought to find out difficulties encountered by high school chemistry students when solving stoichiometric problems and how these could be overcome by using a problem-solving approach. The study adopted a quasi-experimental design. 485 participants drawn from 8 highs schools in a local education district in Zimbabwe participated in the…

Alcohol and Other Drugs on Campus: The Scope of the Problem. Infofacts/Resources

ERIC Educational Resources Information Center

Kapner, Daniel Ari

2008-01-01

The most widespread health problem on college and university campuses in the United States is high-risk alcohol and other drug (AOD) use. Recent reports confirm that the nation's campuses continue to encounter significant consequences as a result of this problem. This "Infofacts/Resources" offers an overview of the problem and highlights effective…

77 FR 30473 - Notice of Intent To Revise Stormwater Regulations To Specify That an NPDES Permit Is Not Required...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-23

... submit for approval by the Washington Department of Natural Resources (DNR) a Road Maintenance and... potential road maintenance problems. While the program is enforceable, the state focuses first on technical... the maintenance of roads within and near the public lands and perform that work, in part, by...

Mariner 10 Venus encounter. [scientific objectives and instruments for flyby observations

NASA Technical Reports Server (NTRS)

Dunne, J. A.

1974-01-01

Review of the scientific objectives of the Mariner 10 mission with regard to observations of Venus during a flyby, and description of the equipment installed on the spacecraft to fulfill these objectives. A detailed description is given of the hardware modifications made to the payload specifically for the Venus sequence. In discussing the encounter operations, two spacecraft problems which significantly affected the Venus encounter sequence are cited - namely, a failure of the television optic heaters to come on shortly after launch, and the occurrence of a roll gyro oscillation.

Automation--planning to implementation; the problems en route.

PubMed Central

Pizer, I H

1976-01-01

Once the major decision to automate library processes is made, there are a variety of problems which may be encountered before the planned system becomes operational. These include problems of personnel, budget, procurement of adjunct services, institutional priorities, and manufacturing uncertainties. Actual and potential difficulties are discussed. PMID:1247703

Conceptualizing Perseverance in Problem Solving as Collective Enterprise

ERIC Educational Resources Information Center

Sengupta-Irving, Tesha; Agarwal, Priyanka

2017-01-01

Students are expected to learn mathematics such that when they encounter challenging problems they will persist. Creating opportunities for students to persist in problem solving is therefore argued as essential to effective teaching and to children developing positive dispositions in mathematical learning. This analysis takes a novel approach to…

Financial Stress, Parental Depressive Symptoms, Parenting Practices, and Children's Externalizing Problem Behaviors: Underlying Processes

ERIC Educational Resources Information Center

Lee, Chih-Yuan Steven; Lee, Jaerim; August, Gerald J.

2011-01-01

This study examined the relationships among financial stress encountered by families, parents' social support, parental depressive symptoms, parenting practices, and children's externalizing problem behaviors to advance our understanding of the processes by which family financial stress is associated with children's problem behaviors. We also…

Problem Solving.

ERIC Educational Resources Information Center

Pollak, Ave

This guide is intended for use in presenting a three-session course designed to develop the problem-solving skills required of persons employed in the manufacturing and service industries. The course is structured so that, upon its completion, students will be able to accomplish the following: describe and analyze problems encountered at work;…

Twenty Recent Novels (and More) about Adolescents for Bibliotherapy.

ERIC Educational Resources Information Center

Hipple, Ted; Comer, Melissa; Boren, Dodie

1997-01-01

Lists 20 problems adolescents may encounter, with a description of one young adult novel in which that problem is a central feature. Some of the problems addressed include abuse, AIDS, alcohol, alienation, crime, death, disabilities, divorce, drugs, ethics, homosexuality, peer pressure, pregnancy, prejudice, rape, religious pressure, school, sex,…

Support Services for Remote Users of Online Public Access Catalogs.

ERIC Educational Resources Information Center

Kalin, Sally W.

1991-01-01

Discusses the needs of remote users of online public access catalogs (OPACs). User expectations are discussed; problems encountered by remote-access users are examined, including technical problems and searching problems; support services are described, including instruction, print guides, and online help; and differences from the needs of…

Exploring Principals' Nonroutine Problems in Bilingual Immersion Schools: Lessons Learned for Multicultural Leadership

ERIC Educational Resources Information Center

Schwabsky, Nitza

2013-01-01

The present study examines the nonroutine problems that eight Anglo-American principals encountered in managing three elementary bilingual immersion schools in the Northwest United States. Using qualitative inquiry to collect data, I employed the multisited ethnographic research model. The principals reported nonroutine problems in the following…

Another Look at the Language Difficulties of International Students

ERIC Educational Resources Information Center

Zhang, Yanyin; Mi, Yinan

2010-01-01

International students encounter language-related problems in their academic studies. Specific problem areas have been identified and possible underlying causes have been explored. The present study investigates the impact of two variables--length of study and academic disciplines--in relation to the problems. The findings from a survey and…

Maintaining physical therapy standards in an emergency situation: solutions after the Bali bombing disaster.

PubMed

Edgar, D; Wood, F; Goodwin-Walters, A

2005-08-01

In a mass casualty event, treatment is traditionally provided in a 'best for the most' fashion. This paper examines the challenges encountered by physical therapists while providing rehabilitation to 28 survivors who suffered burns after the terrorist bombing in Bali, Indonesia. Individual patient input was achieved with routine outcome measures and workload statistics. Workforce expansion, maintenance of treatment quality, and other practical initiatives used in order to achieve this goal are discussed.

Does Sex Trade with Violence among Genotypes in Drosophila melanogaster?

PubMed Central

Cabral, Larry G.; Foley, Brad R.; Nuzhdin, Sergey V.

2008-01-01

The evolutionary forces shaping the ability to win competitive interactions, such as aggressive encounters, are still poorly understood. Given a fitness advantage for competitive success, variance in aggressive and sexual display traits should be depleted, but a great deal of variation in these traits is consistently found. While life history tradeoffs have been commonly cited as a mechanism for the maintenance of variation, the variability of competing strategies of conspecifics may mean there is no single optimum strategy. We measured the genetically determined outcomes of aggressive interactions, and the resulting effects on mating success, in a panel of diverse inbred lines representing both natural variation and artificially selected genotypes. Males of one genotype which consistently lost territorial encounters with other genotypes were nonetheless successful against males that were artificially selected for supernormal aggression and dominated all other lines. Intransitive patterns of territorial success could maintain variation in aggressive strategies if there is a preference for territorial males. Territorial success was not always associated with male mating success however and females preferred ‘winners’ among some male genotypes, and ‘losers’ among other male genotypes. This suggests that studying behaviour from the perspective of population means may provide limited evolutionary and genetic insight. Overall patterns of competitive success among males and mating transactions between the sexes are consistent with mechanisms proposed for the maintenance of genetic variation due to nonlinear outcomes of competitive interactions. PMID:18414669

Does sex trade with violence among genotypes in Drosophila melanogaster?

PubMed

Cabral, Larry G; Foley, Brad R; Nuzhdin, Sergey V

2008-04-16

The evolutionary forces shaping the ability to win competitive interactions, such as aggressive encounters, are still poorly understood. Given a fitness advantage for competitive success, variance in aggressive and sexual display traits should be depleted, but a great deal of variation in these traits is consistently found. While life history tradeoffs have been commonly cited as a mechanism for the maintenance of variation, the variability of competing strategies of conspecifics may mean there is no single optimum strategy. We measured the genetically determined outcomes of aggressive interactions, and the resulting effects on mating success, in a panel of diverse inbred lines representing both natural variation and artificially selected genotypes. Males of one genotype which consistently lost territorial encounters with other genotypes were nonetheless successful against males that were artificially selected for supernormal aggression and dominated all other lines. Intransitive patterns of territorial success could maintain variation in aggressive strategies if there is a preference for territorial males. Territorial success was not always associated with male mating success however and females preferred 'winners' among some male genotypes, and 'losers' among other male genotypes. This suggests that studying behaviour from the perspective of population means may provide limited evolutionary and genetic insight. Overall patterns of competitive success among males and mating transactions between the sexes are consistent with mechanisms proposed for the maintenance of genetic variation due to nonlinear outcomes of competitive interactions.

Potential Cost Savings with 3D Printing Combined With 3D Imaging and CPLM for Fleet Maintenance and Revitalization

DTIC Science & Technology

2014-05-01

1 Potential Cost Savings with 3D Printing Combined With 3D Imaging and CPLM for Fleet Maintenance and Revitalization David N. Ford...2014 4. TITLE AND SUBTITLE Potential Cost Savings with 3D Printing Combined With 3D Imaging and CPLM for Fleet Maintenance and Revitalization 5a...Manufacturing ( 3D printing ) 2 Research Context Problem: Learning curve savings forecasted in SHIPMAIN maintenance initiative have not materialized

Transit security : a description of problems and countermeasures

DOT National Transportation Integrated Search

1984-10-01

This report provides a broad perspective on transit security. It examines a wide range of transit security problems encountered by transit systems, namely: crime against passengers and employees; crimes involving revenues, including fare evasion by p...

Adaptation of Social Problem Solving for Children Questionnaire in 6 Age Groups and its Relationships with Preschool Behavior Problems

ERIC Educational Resources Information Center

Dereli-Iman, Esra

2013-01-01

Social Problem Solving for Child Scale is frequently used to determine behavioral problems of children with their own word and to identify ways of conflict encountered in daily life, and interpersonal relationships in abroad. The primary purpose of this study was to adapt the Wally Child Social Problem-Solving Detective Game Test. In order to…

Challenges Encountered During the Veterinary Disaster Response: An Example from Chile

PubMed Central

Garde, Elena; Pérez, Guillermo Enrique; Acosta-Jamett, Gerardo; Bronsvoort, Barend Mark

2013-01-01

Simple Summary Disaster preparedness for companion animals has economic, social and welfare benefits, yet many countries continue to omit dogs and cats from their national and regional contingency planning. Responses therefore, are often chaotic, inefficient and uncoordinated, or absent altogether. Documented experiences in Chile contribute to the information supporting the inclusion of companion animals into locally relevant disaster plans. These plans serve to prepare communities and authorities, identify resources available, establish a chain of command, develop local priorities, and subsequently reduce the negative impacts on both human and animal communities. Abstract Large-scale disasters have immeasurable effects on human and animal communities. Evaluating and reporting on the response successes and difficulties encountered serves to improve existing preparedness documents and provide support to those in the process of developing plans. Although the majority of disasters occur in low and middle income nations, less than 1% of the disaster literature originates from these countries. This report describes a response to a disease outbreak in domestic dogs in Dichato, Chile following the 2010 earthquake/tsunami. With no national plan coordinating the companion animal response, there was a chaotic approach among animal welfare organizations towards rescue, diagnosis, treatment and record-keeping. Similar to the medical response following the 1985 earthquake near Santiago, we experienced problems within our own teams in maintenance of data integrity and protocol compliance. Loss of infrastructure added complications with transportation, communications and acquisition of supplies. Similar challenges likely occur in most disasters, but can be reduced through pro-active planning at national and local levels. There is sufficient information to support the human and animal welfare benefits of including companion animals in national planning, and lessons learned through this and other experiences can assist planners in the development of comprehensive and locally relevant contingency plans. PMID:26479753

Lattice Boltzmann computation of creeping fluid flow in roll-coating applications

NASA Astrophysics Data System (ADS)

Rajan, Isac; Kesana, Balashanker; Perumal, D. Arumuga

2018-04-01

Lattice Boltzmann Method (LBM) has advanced as a class of Computational Fluid Dynamics (CFD) methods used to solve complex fluid systems and heat transfer problems. It has ever-increasingly attracted the interest of researchers in computational physics to solve challenging problems of industrial and academic importance. In this current study, LBM is applied to simulate the creeping fluid flow phenomena commonly encountered in manufacturing technologies. In particular, we apply this novel method to simulate the fluid flow phenomena associated with the "meniscus roll coating" application. This prevalent industrial problem encountered in polymer processing and thin film coating applications is modelled as standard lid-driven cavity problem to which creeping flow analysis is applied. This incompressible viscous flow problem is studied in various speed ratios, the ratio of upper to lower lid speed in two different configurations of lid movement - parallel and anti-parallel wall motion. The flow exhibits interesting patterns which will help in design of roll coaters.

Ethical problems and moral sensitivity in physiotherapy: a descriptive study.

PubMed

Kulju, Kati; Suhonen, Riitta; Leino-Kilpi, Helena

2013-08-01

This study identified and described ethical problems encountered by physiotherapists in their practice and physiotherapists' moral sensitivity in ethical situations. A questionnaire-based survey was constructed to identify ethical problems, and the Moral Sensitivity Questionnaire Revised version was used to measure moral sensitivity. Physiotherapists (n = 116) working in public health services responded to the questionnaire. Based on the results, most of the physiotherapists encounter ethical problems weekly. They concern mainly financial considerations, equality and justice, professionalism, unethical conduct of physiotherapists or other professions and patients' self-determination. The dimension of moral strength was emphasised in physiotherapists' self-evaluations of their moral sensitivity. As a conclusion, ethical problems do occur not only at individual level but also at organisational and society level. Physiotherapists seem to have moral strength for speaking on behalf of the patient. Scarce resources make them feel insufficient but much could still be done to provide quality care in co-operation with other health-care professionals.

Reasons for encounter and disease patterns in Danish primary care: changes over 16 years.

PubMed

Moth, Grete; Olesen, Frede; Vedsted, Peter

2012-06-01

Approximately 98% of Danish citizens are listed with a general practice which they consult for medical advice. Although 85% of the population contact their general practitioner (GP) every year, little is known about these contacts. The aim of the present paper is to gain updated knowledge about patients' reasons for encounter and the GP activities and to make comparisons with a similar study from 1993. All GPs in the Central Denmark Region were invited to register all contacts during one randomly chosen day within a year. The registration included questions about patients' reasons for encounter, the types and contents of the contacts, referrals, and distribution between new episodes and follow-up contacts. Aggregated data were compared with the results from 1993. A total of 404 (46%) GPs participated. The number of contacts per 1000 inhabitants had risen by 19.7%. The reasons for encounter and final diagnoses resembled those in 1993. Musculoskeletal, psychological, and respiratory problems were the most common reasons for encounter, psychological problems being the only type to increase over the period. Interestingly, the proportion of diagnoses within the ICPC 'A' chapter rose from 13.5 to 19.7%. The referral rate rose by 2% (relative: 18.7%) from 10.7% to 12.7% and the share of follow-up contacts rose from 45.9% to 50.4% (relative: 8.7%). Quite small changes were seen in the patterns of reasons for encounter and diagnoses from 1993 to 2009. However, an increase was found in contacts with general practice and referrals and in the proportion of follow-ups.

An analysis of the cultural problems encountered during caregiving by the nurses working in two different regions of Turkey.

PubMed

Kilic, Serap Parlar; Besen, Dilek Buyukkaya; Tokem, Yasemin; Fadiloglu, Cicek; Karadag, Gulendam

2014-06-01

The aim of this study was to identify the cultural problems encountered during caregiving by the nurses working in two university hospitals located in western and eastern Turkey. This descriptive, comparative study was conducted between July 2008 and October 2009 with 338 nurses who volunteered to take part in the study. The study data were collected using an individual description questionnaire consisting of 10 questions and another questionnaire consisting of 14 questions to identify the cultural problems encountered by nurses when giving care. The study showed with respect to training received on transcultural nursing that only 59 nurses had this training, but the percentage was higher in the nurses working at the hospital in the west (54.2%) (P > 0.05). It was found that a large number of nurses in the sample group (n = 286) gave care to at least one individual from another culture, but the percentage was significantly higher in the nurses working in the west (56.7%) than in the nurses working in the east (43.3%) (P < 0.05). When the problems experienced by the nurses during caregiving because of cultural characteristics of patients were explored, it was found that they experienced problems mostly in 'communication', and the percentage of those having problems was higher in the nurses working in the west (60.8%) (P > 0.05). The problem experienced in this area was mostly because of the fact that patients 'did not speak Turkish' (63.8%). In conclusion, the nurses gave care to patients from different cultures, and most of them had trouble when giving care to patients from different cultures. © 2013 Wiley Publishing Asia Pty Ltd.

Radio science ground data system for the Voyager-Neptune encounter, part 1

NASA Technical Reports Server (NTRS)

Kursinski, E. R.; Asmar, S. W.

1991-01-01

The Voyager radio science experiments at Neptune required the creation of a ground data system array that includes a Deep Space Network complex, the Parkes Radio Observatory, and the Usuda deep space tracking station. The performance requirements were based on experience with the previous Voyager encounters, as well as the scientific goals at Neptune. The requirements were stricter than those of the Uranus encounter because of the need to avoid the phase-stability problems experienced during that encounter and because the spacecraft flyby was faster and closer to the planet than previous encounters. The primary requirement on the instrument was to recover the phase and amplitude of the S- and X-band (2.3 and 8.4 GHz) signals under the dynamic conditions encountered during the occultations. The primary receiver type for the measurements was open loop with high phase-noise and frequency stability performance. The receiver filter bandwidth was predetermined based on the spacecraft's trajectory and frequency uncertainties.

The impact of benzodiazepine use on methadone maintenance treatment outcomes.

PubMed

Brands, Bruna; Blake, Joan; Marsh, David C; Sproule, Beth; Jeyapalan, Renuka; Li, Selina

2008-01-01

The purposes of this study were to examine predictors of benzodiazepine use among methadone maintenance treatment patients, to determine whether baseline benzodiazepine use influenced ongoing use during methadone maintenance treatment, and to assess the effect of ongoing benzodiazepine use on treatment outcomes (i.e., opioid and cocaine use and treatment retention). A retrospective chart review of 172 methadone maintenance treatment patients (mean age = 34.6 years; standard deviation = 8.5 years; 64% male) from January 1997 to December 1999 was conducted. At baseline, 29% were "non-users" (past year) of benzodiazepine, 36% were "occasional users," and 35% were "regular/problem users." Regular/problem users were more likely to have started opioid use with prescription opioids, experienced more overdoses, and reported psychiatric comorbidity. Being female, more years of opioid use, and a history of psychiatric treatment were significant predictors of baseline benzodiazepine use. Ongoing benzodiazepine users were more likely to have opioid-positive and cocaine-positive urine screens during methadone maintenance treatment. Only ongoing cocaine use was negatively related to retention. Benzodiazepine use by methadone maintenance treatment patients is associated with a more complex clinical picture and may negatively influence treatment outcomes.

Recruiting to a large-scale physical activity randomised controlled trial - experiences with the gift of hindsight.

PubMed

Copeland, Robert J; Horspool, Kimberley; Humphreys, Liam; Scott, Emma

2016-02-24

Recruitment issues continue to impact a large number of trials. Sharing recruitment information is vital to supporting researchers to accurately predict recruitment and to manage the risk of poor recruitment during study design and implementation. The purpose of this article is to build on the knowledge available to researchers on recruiting to community-based trials. A critical commentary of the recruitment challenges encountered during the Booster Study, a randomised controlled trial in which researchers investigated the effectiveness of a motivational interviewing style intervention on the maintenance of physical activity. An overview of recruitment is provided, as well as strategies employed to recruit prospective participants and possible barriers to recruitment. Two hundred eighty-two people, 47 % of the original target, were recruited through mail-outs, with secondary recruitment pathways yielding no additional participants. The research team encountered problems with recontacting interested participants and providing study materials in non-English languages. A lower response rate to the mail-out and a greater number of non-contactable participants in the full study than in the pilot study resulted in a smaller pool of eligible participants from the brief intervention eligible for recruitment into the randomised controlled trial. Despite using widely accepted recruitment strategies and incorporating new recruitment tactics in response to challenges, the Booster Study investigators failed to randomise a sufficient number of participants. Recruitment in trials of community-based behavioural interventions may have different challenges than trials based on clinical or primary care pathways. Specific challenges posed by the complexity of the study design and problems with staffing and resources were exacerbated by the need to revise upwards the number of mailed invitations as a result of the pilot study. Researchers should ensure study design facilitates recruitment and consider the implications of changing recruitment on the operational aspects of the trial. Where possible, the impact of new strategies should be measured, and recruitment successes and challenges should be shared with those planning similar studies. ISRCTN56495859 (registered on 12 February 2009); NCT00836459 (registered on 3 February 2009).

Tutoring electronic troubleshooting in a simulated maintenance work environment

NASA Technical Reports Server (NTRS)

Gott, Sherrie P.

1987-01-01

A series of intelligent tutoring systems, or intelligent maintenance simulators, is being developed based on expert and novice problem solving data. A graded series of authentic troubleshooting problems provides the curriculum, and adaptive instructional treatments foster active learning in trainees who engage in extensive fault isolation practice and thus in conditionalizing what they know. A proof of concept training study involving human tutoring was conducted as a precursor to the computer tutors to assess this integrated, problem based approach to task analysis and instruction. Statistically significant improvements in apprentice technicians' troubleshooting efficiency were achieved after approximately six hours of training.

On the application of copula in modeling maintenance contract

NASA Astrophysics Data System (ADS)

Iskandar, B. P.; Husniah, H.

2016-02-01

This paper deals with the application of copula in maintenance contracts for a nonrepayable item. Failures of the item are modeled using a two dimensional approach where age and usage of the item and this requires a bi-variate distribution to modelling failures. When the item fails then corrective maintenance (CM) is minimally repaired. CM can be outsourced to an external agent or done in house. The decision problem for the owner is to find the maximum total profit whilst for the agent is to determine the optimal price of the contract. We obtain the mathematical models of the decision problems for the owner as well as the agent using a Nash game theory formulation.

Some problems of the design of highly directional spacecraft antennas

NASA Technical Reports Server (NTRS)

Prigoda, B. A.

1974-01-01

Problems of optimization and selection of the most expedient forms of design of directional antenna systems encountered in spacecraft design are discussed. Selection of a given type of antenna depends on its characteristic size, weight, and potential.

Community Work and Local Authority Decision Making: Potential and Problems

ERIC Educational Resources Information Center

Corina, Lewis

1976-01-01

British local authority and decision making procedures are described for community developers. Included are potential ways of influencing the authority system, and problems and areas of weakness that may be encountered in dealing with the system. (ABM)

Geohydrologic aspects for siting and design of low-level radioactive-waste disposal

USGS Publications Warehouse

Bedinger, M.S.

1989-01-01

The objective for siting and design of low-level radioactive-waste repository sites is to isolate the waste from the biosphere until the waste no longer poses an unacceptable hazard as a result of radioactive decay. Low-level radioactive waste commonly is isolated at shallow depths with various engineered features to stabilize the waste and to reduce its dissolution and transport by ground water. The unsaturated zone generally is preferred for isolating the waste. Low-level radioactive waste may need to be isolated for 300 to 500 years. Maintenance and monitoring of the repository site are required by Federal regulations for only the first 100 years. Therefore, geohydrology of the repository site needs to provide natural isolation of the waste for the hazardous period following maintenance of the site. Engineering design of the repository needs to be compatible with the natural geohydrologic conditions at the site. Studies at existing commercial and Federal waste-disposal sites provide information on the problems encountered and the basis for establishing siting guidelines for improved isolation of radioactive waste, engineering design of repository structures, and surveillance needs to assess the effectiveness of the repositories and to provide early warning of problems that may require remedial action.Climate directly affects the hydrology of a site and probably is the most important single factor that affects the suitability of a site for shallow-land burial of low-level radioactive waste. Humid and subhumid regions are not well suited for shallow isolation of low-level radioactive waste in the unsaturated zone; arid regions with zero to small infiltration from precipitation, great depths to the water table, and long flow paths to natural discharge areas are naturally well suited to isolation of the waste. The unsaturated zone is preferred for isolation of low-level radioactive waste. The guiding rationale is to minimize contact of water with the waste and to minimize transport of waste from the repository. The hydrology of a flow system containing a repository is greatly affected by the engineering of the repository site. Prediction of the performance of the repository is a complex problem, hampered by problems of characterizing the natural and manmade features of the flow system and by the limitations of models to predict flow and geochemical processes in the saturated and unsaturated zones. Disposal in low-permeability unfractured clays in the saturated zone may be feasible where the radionuclide transport is controlled by diffusion rather than advection.

The Influence of Problems Faced during Internships on Interns' Views of Their Profession and Their Intention to Work in the Tourism Industry

ERIC Educational Resources Information Center

Kasli, Mehmet; Ilban, Mehmet Oguzhan

2013-01-01

Problem Statement: The problem of this research is identifying the difficulties that undergraduate students experience during their internships and assessing their future intention to work in the tourism industry. Purpose of Study: This research aims to identify the problems undergraduate students encounter as interns in tourism programs and to…

NOTES: a review of the technical problems encountered and their solutions.

PubMed

Mintz, Yoav; Horgan, Santiago; Cullen, John; Stuart, David; Falor, Eric; Talamini, Mark A

2008-08-01

Natural orifice translumenal endoscopic surgery (NOTES) is currently investigated and developed worldwide. In the past few years, multiple groups have confronted this challenge. Many technical problems are encountered in this technique due to the currently available tools for this approach. Some of the unique technical problems in NOTES include: blindly performed primary incisions; uncontrolled pneumoperitoneal pressure; no support for the endoscope in the abdominal cavity; inadequate vision; insufficient illumination; limited retraction and exposure; and the complexity of suturing and performing a safe anastomosis. In this paper, we review the problems encountered in NOTES and provide possible temporary solutions. Acute and survival studies were performed on 15 farm pigs. The hybrid technique approach (i.e., endoscopic surgery with the aid of laparoscopic vision) was performed in all cases. Procedures performed included liver biopsies, bilateral tubal ligation, oophprectomy, cholecystectomy, splenectomy and small bowel resection, and anastomosis. All attempted procedures were successfully performed. New methods and techniques were developed to overcome the technical problems. Closure of the gastrotomy was achieved by T-bar sutures and by stapler closure of the stomach incision. Small bowel anastomosis was achieved by the dual-lumen NOTES technique. The hybrid technique serves as a temporary approach to aid in developing the NOTES technique. A rectal or vaginal port of entry enables and facilitates gastrointestinal NOTES by using available laparoscopic instruments. The common operations performed today in the laparoscopic fashion could be probably performed in the NOTES approach. The safety of these procedures, however, is yet to be determined.

Acts of Attention: An Exploration of Teacher Candidates' Attention to Educational Encounters, and How It Relates to Task Formulation

ERIC Educational Resources Information Center

Harvey, Victoria A.

2015-01-01

This study begins with the belief that the ways in which teachers see and attend to educational encounters matter for their actions in classrooms. Using microethnography as a framework, this dissertation explores the relationship between teacher candidate attention, problem formulation, and action. Through analysis of the M.Ed. inquiry reports of…

Unethical Behaviours Preservice Teachers Encounter on Social Networks

ERIC Educational Resources Information Center

Deveci Topal, Arzu; Kolburan Gecer, Aynur

2015-01-01

The development of web 2.0 technology has resulted in an increase in internet sharing. The scope of this study is social networking, which is one of the web 2.0 tools most heavily used by internet users. In this paper, the unethical behaviours that preservice teachers encounter on social networks and the ways to deal with these problems are…

The MeSH translation maintenance system: structure, interface design, and implementation.

PubMed

Nelson, Stuart J; Schopen, Michael; Savage, Allan G; Schulman, Jacque-Lynne; Arluk, Natalie

2004-01-01

The National Library of Medicine (NLM) produces annual editions of the Medical Subject Headings (MeSH). Translations of MeSH are often done to make the vocabulary useful for non-English users. However, MeSH translators have encountered difficulties with entry vocabulary as they maintain and update their translation. Tracking MeSH changes and updating their translations in a reasonable time frame is cumbersome. NLM has developed and implemented a concept-centered vocabulary maintenance system for MeSH. This system has been extended to create an interlingual database of translations, the MeSH Translation Maintenance System (MTMS). This database allows continual updating of the translations, as well as facilitating tracking of the changes within MeSH from one year to another. The MTMS interface uses a Web-based design with multiple colors and fonts to indicate concepts needing translation or review. Concepts for which there is no exact English equivalent can be added. The system software encourages compliance with the Unicode standard in order to ensure that character sets with native alphabets and full orthography are used consistently.

Human factors in aviation maintenance, phase two : progress report.

DOT National Transportation Integrated Search

1993-04-01

In this second phase of research on Human Factors in Aviation Maintenance, the emphasis has evolved from problem definition to development of demonstrations and prototypes. These demonstrations include a computer-based training simulation for trouble...

Make or Buy: An Analysis of the Impacts of 3D Printing Operations, 3D Laser Scanning Technology, and Collaborative Product Lifecycle Management on Ship Maintenance and Modernization Cost Savings

DTIC Science & Technology

2015-03-21

3 Navy Depot Maintenance Strategic Plan (2014– 2019 ... Tech Center in-sourcing initiative saves between $52 and $203 million in data system costs over the life of the project. The Army claims in...maintenance budgets at the DOD and the Navy are highlighted, and the Navy Depot Maintenance Strategic Plan (2014– 2019 ) is introduced. The Problem

Space station orbit maintenance

NASA Technical Reports Server (NTRS)

Kaplan, D. I.; Jones, R. M.

1983-01-01

The orbit maintenance problem is examined for two low-earth-orbiting space station concepts - the large, manned Space Operations Center (SOC) and the smaller, unmanned Science and Applications Space Platform (SASP). Atmospheric drag forces are calculated, and circular orbit altitudes are selected to assure a 90 day decay period in the event of catastrophic propulsion system failure. Several thrusting strategies for orbit maintenance are discussed. Various chemical and electric propulsion systems for orbit maintenance are compared on the basis of propellant resupply requirements, power requirements, Shuttle launch costs, and technology readiness.

The engine maintenance scheduling by using reliability centered maintenance method and the identification of 5S application in PT. XYZ

NASA Astrophysics Data System (ADS)

Sembiring, N.; Panjaitan, N.; Saragih, A. F.

2018-02-01

PT. XYZ is a manufacturing company that produces fresh fruit bunches (FFB) to Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). PT. XYZ consists of six work stations: receipt station, sterilizing station, thressing station, pressing station, clarification station, and kernelery station. So far, the company is still implementing corrective maintenance maintenance system for production machines where the machine repair is done after damage occurs. Problems at PT. XYZ is the absence of scheduling engine maintenance in a planned manner resulting in the engine often damaged which can disrupt the smooth production. Another factor that is the problem in this research is the kernel station environment that becomes less convenient for operators such as there are machines and equipment not used in the production area, slippery, muddy, scattered fibers, incomplete use of PPE, and lack of employee discipline. The most commonly damaged machine is in the seed processing station (kernel station) which is cake breaker conveyor machine. The solution of this problem is to propose a schedule plan for maintenance of the machine by using the method of reliability centered maintenance and also the application of 5S. The result of the application of Reliability Centered maintenance method is obtained four components that must be treated scheduled (time directed), namely: for bearing component is 37 days, gearbox component is 97 days, CBC pen component is 35 days and conveyor pedal component is 32 days While after identification the application of 5S obtained the proposed corporate environmental improvement measures in accordance with the principles of 5S where unused goods will be moved from the production area, grouping goods based on their use, determining the procedure of cleaning the production area, conducting inspection in the use of PPE, and making 5S slogans.

Applications of Genetic Methods to NASA Design and Operations Problems

NASA Technical Reports Server (NTRS)

Laird, Philip D.

1996-01-01

We review four recent NASA-funded applications in which evolutionary/genetic methods are important. In the process we survey: the kinds of problems being solved today with these methods; techniques and tools used; problems encountered; and areas where research is needed. The presentation slides are annotated briefly at the top of each page.

Having the Memory of an Elephant: Long-Term Retrieval and the Use of Analogues in Problem Solving

ERIC Educational Resources Information Center

Chen, Zhe; Mo, Lei; Honomichl, Ryan

2004-01-01

The authors report 4 experiments exploring long-term analogical transfer from problem solutions in folk tales participants heard during childhood, many years before encountering the target problems. Substantial culture-specific analogical transfer was found when American and Chinese participants' performance was compared on isomorphs of problems…

Applying an Information Problem-Solving Model to Academic Reference Work: Findings and Implications.

ERIC Educational Resources Information Center

Cottrell, Janet R.; Eisenberg, Michael B.

2001-01-01

Examines the usefulness of the Eisenberg-Berkowitz Information Problem-Solving model as a categorization for academic reference encounters. Major trends in the data include a high proportion of questions about location and access of sources, lack of synthesis or production activities, and consistent presence of system problems that impede the…

Data System Implementation: A Leader Navigates People Problems around Technology and Data Use

ERIC Educational Resources Information Center

Cho, Vincent; Jimerson, Jo Beth; Wayman, Jeffrey C.

2015-01-01

Computer data systems have become a lynchpin to supporting school data use. However, successfully implementing such systems is no easy task. In this case, readers explore the ways in which "technology problems" and "people problems" can be intertwined. The case follows Dr. Molly Winters as she encounters social and…

Why Do Disadvantaged Filipino Children Find Word Problems in English Difficult?

ERIC Educational Resources Information Center

Bautista, Debbie; Mulligan, Joanne

2010-01-01

Young Filipino students are expected to solve mathematical word problems in English, a language that many encounter only in schools. Using individual interviews of 17 Filipino children, we investigated why word problems in English are difficult and the extent to which the language interferes with performance. Results indicate that children could…

School Nurses' Perceived Prevalence and Competence to Address Student Mental Health Problems

ERIC Educational Resources Information Center

Stephan, Sharon H.; Connors, Elizabeth H.

2013-01-01

Due to under-identification of student mental health problems and limited specialty mental health providers in schools, school nurses are often faced with identifying and addressing student mental health needs. This exploratory study assessed prevalence and types of student mental health problems encountered by school nurses, as well as their…

Molten salt corrosion of SiC and Si3N4

NASA Technical Reports Server (NTRS)

Jacobson, N. S.; Smialek, J. L.; Fox, D. S.

1986-01-01

The most severe type of corrosion encountered in heat engines is corrosion by molten sodium sulfate, formed by the reaction of ingested sodium chloride and sulfur impurities in the fuel. This problem was studied extensively for superalloys, but only recently examined for ceramics. This problem is addressed with laboratory studies to understand the fundamental reaction mechanisms and with burner studies to provide a more realistic simulation of the conditions encountered in a heat engine. In addition the effect of corrosion on the strengths of these materials was assessed. Each of these aspects will be reviewed and some ideas toward possible solutions will be discussed.

Comparison of Low-Energy Lunar Transfer Trajectories to Invariant Manifolds

NASA Technical Reports Server (NTRS)

Anderson, Rodney L.; Parker, Jeffrey S.

2011-01-01

In this study, transfer trajectories from the Earth to the Moon that encounter the Moon at various flight path angles are examined, and lunar approach trajectories are compared to the invariant manifolds of selected unstable orbits in the circular restricted three-body problem. Previous work focused on lunar impact and landing trajectories encountering the Moon normal to the surface, and this research extends the problem with different flight path angles in three dimensions. The lunar landing geometry for a range of Jacobi constants are computed, and approaches to the Moon via invariant manifolds from unstable orbits are analyzed for different energy levels.

The Voyager spacecraft /James Watt International Gold Medal Lecture/

NASA Technical Reports Server (NTRS)

Heacock, R. L.

1980-01-01

The Voyager Project background is reviewed with emphasis on selected features of the Voyager spacecraft. Investigations by the Thermo-electric Outer Planets Spacecraft Project are discussed, including trajectories, design requirements, and the development of a Self Test and Repair computer, and a Computer Accessed Telemetry System. The design and configuration of the spacecraft are described, including long range communications, attitude control, solar independent power, sequencing and control data handling, and spacecraft propulsion. The development program, maintained by JPL, experienced a variety of problems such as design deficiencies, and process control and manufacturing problems. Finally, the spacecraft encounter with Jupiter is discussed, and expectations for the Saturn encounter are expressed.

A subcutaneous channeling probe for implanting long leads

NASA Technical Reports Server (NTRS)

Lund, G. F.; Simmonds, R. C.; Williams, B. A.

1977-01-01

The channeling probe described in the present paper was designed to overcome surgical problems of the type that were encountered when a multichannel radio transmitter had to be implanted in a cow. The probe was made of a flexible but sufficiently stiff 9.5-mm-diam nylon rod, consisting of 46-cm sections for convenience in sterilization and surgical handling. Stainless steel sleaves reinforced the threaded connecting joints. At one end, arrowhead-shaped channeling heads could be attached to produce wide channels for large sensors. The other end was tapered for narrow channels. Postoperative problems were not encountered in the use of this probe in cows, sheep, and dogs.

Understanding Social and Legal Justice Issues for Aboriginal Women within the Context of an Indigenous Australian Studies Classroom: A Problem-Based Learning Approach

ERIC Educational Resources Information Center

Mackinlay, Elizabeth; Thatcher, Kristy; Seldon, Camille

2004-01-01

Problem-based learning (PBL) is a pedagogical approach in which students encounter a problem and systematically set about finding ways to understand the problem through dialogue and research. PBL is an active process where students take responsibility for their learning by asking their own questions about the problem and in this paper we explore…

Administrative encounters in general practice: low value or hidden value care?

PubMed

Trevena, Lyndal J; Harrison, Christopher; Britt, Helena C

2018-02-19

To determine the frequency of general practice administrative encounters, and to determine whether they represent low value care. Secondary analysis of data from the Bettering Evaluation and Care of Health (BEACH) dataset. 1 568 100 GP-patient encounters in Australia, 2000-01 to 2015-16. An annual nationally representative random sample of about 1000 GPs, who each recorded the details of 100 consecutive encounters with patients. Proportions of general practice encounters that were potentially low value care encounters (among the patient's reasons for the encounter was at least one administrative, medication, or referral request) and potentially low value care only encounters (such reasons were the sole reason for the encounter). For 2015-16, we also examined other health care provided by GPs at these encounters. During 2015-16, 18.5% (95% CI, 17.7-19.3%) of 97 398 GP-patient encounters were potentially low value care request encounters; 7.4% (95% CI, 7.0-7.9%) were potentially low value care only encounters. Administrative work was requested at 3.8% (95% CI, 3.5-4.0%) of GP visits, 35.4% of which were for care planning and coordination, 33.5% for certification, and 31.2% for other reasons. Medication requests were made at 13.1% (95% CI, 12.4-13.7%) of encounters; other health care was provided at 57.9% of medication request encounters, counselling, advice or education at 23.4%, and pathology testing was ordered at 16.7%. Referrals were requested at 2.8% (95% CI, 1.7-3.0%) of visits, at 69.4% of which additional health care was provided. The problems managed most frequently at potentially low value care only encounters were chronic diseases. Most patients requested certificates, medications and referrals in the context of seeking help for other health needs. Additional health care, particularly for chronic diseases, was provided at most GP administrative encounters. The MBS Review should consider the hidden value of these encounters.

National Fuel Cell Bus Program: Accelerated Testing Evaluation Report #2, Alameda-Contra Costa Transit District (AC Transit) and Appendices

DOE Office of Scientific and Technical Information (OSTI.GOV)

Eudy, L.; Chandler, K.

2010-06-01

This is an evaluation of hydrogen fuel cell transit buses operating at AC Transit in revenue service since March 20, 2006, comparing similar diesel buses operating from the same depot. It covers November 2007 through February 2010. Results include implementation experience, fueling station operation, evaluation results at AC Transit (bus usage, availability, fuel economy, maintenance costs, and road calls), and a summary of achievements and challenges encountered during the demonstration.

Environmental Assessment. Construction and Maintenance of Wastewater Pipelines and Lift Stations and Installation of Fiber Optic Conduit at Eglin Air Force Base, Florida

DTIC Science & Technology

2012-06-01

habitats . However, on completion of the project, animals would likely return to the project site. There are known rare/protected species as well as...designated critical habitat occurring within the proposed project area. The threatened and endangered species field survey conducted on October 12- 13...critical habitat of the RCW. Numerous cavity trees used by the birds during breeding season were encounters along the Camp Rudder line route. Known as RCW

CXCR4 is critical for CD8+ memory T cell homeostatic self-renewal but not rechallenge self-renewal1

PubMed Central

Chaix, Julie; Nish, Simone A.; Lin, Wen-Hsuan W.; Rothman, Nyanza J.; Ding, Lei; Wherry, E. John; Reiner, Steven L.

2014-01-01

Central memory (CM) CD8+ T cells “remember” prior encounters because they maintain themselves through cell division in the absence of ongoing challenge (homeostatic self-renewal) as well as reproduce the central memory fate while manufacturing effector cells during secondary antigen encounters (rechallenge self-renewal). We tested the consequence of conditional deletion of the bone marrow (BM) homing receptor CXCR4 on antiviral T cell responses. CXCR4-deficient CD8+ T cells have impaired memory cell maintenance due to defective homeostatic proliferation. Upon rechallenge, however, CXCR4-deficient T cells can re-expand and renew the central memory pool while producing secondary effector cells. The critical BM-derived signals essential for CD8+ T cell homeostatic self-renewal appear to be dispensable to yield self-renewing, functionally asymmetric cell fates during rechallenge. PMID:24973450

The Prerogative of "Corrective Recasts" as a Sign of Hegemony in the Use of Language: Further Thoughts on Eric Hauser's (2005) "Coding 'Corrective Recasts': The Maintenance of Meaning and More Fundamental Problems"

ERIC Educational Resources Information Center

Rajagopalan, Kanavillil

2006-01-01

The objective of this response article is to think through some of what I see as the far-reaching implications of a recent paper by Eric Hauser (2005) entitled "Coding 'corrective recasts': the maintenance of meaning and more fundamental problems". Hauser makes a compelling, empirically-backed case for his contention that, contrary to widespread…

First UMTA and AoA National Conference on Transportation for the Elderly and Handicapped

DOT National Transportation Integrated Search

1985-05-01

The Conference was highly successful in detailing problems now encountered in : providing transportation services to the elderly and handicapped and in : recommending specific solutions to those problems. There was a strong focus on : realistic, prac...

Motor carrier concerns about transportation problems in Oregon : final report.

DOT National Transportation Integrated Search

2004-03-01

This report summarizes an analysis of data from a statewide survey of freight motor carrier firms, conducted by the Oregon Department of Transportation (ODOT) in the summer of 2001, to identify freight industry concerns about problems they encounter ...

Minding Your Business: How to Avoid the Seven Deadly Financial Pitfalls.

ERIC Educational Resources Information Center

Stephens, Keith

1990-01-01

Describes financial management problems typically encountered by child care center directors and owners. Offers suggestions for planning and management techniques to overcome problems of cash flow, budgeting, rising costs, underpricing, declining revenues, fee collection, and liquidity. (NH)

Vehicle accidents at maintenance and utility work zones.

DOT National Transportation Integrated Search

1978-01-01

The objective of this study was to determine the magnitude and characteristics of safety problems, in terms of reported accidents, that are associated with moving vehicular traffic around and through highway maintenance and utility work zones. This w...

CAD-supported university course on photonics and fiber optic communications

NASA Astrophysics Data System (ADS)

Chan, David K. C.; Richter, Andre

2002-05-01

The highly competitive global photonics industry has created a significant demand for professional Photonic Design Automation (PDA) tools and personnel trained to use them effectively. In such a dynamic field, CAD-supported courses built around widely used industrial PDA tools provide many advantages, especially when offered through tertiary education institutions (which are ideally suited to producing the future workforce of the Photonics industry). An objective of VPIsystems' University program is to develop tertiary level courses based on VPIsystems' WDM transmission and component modeling software tools. Advantages offered by such courses include: visualizing and aiding the understanding of complex physical problems encountered in the design of fiber-optic communication systems; virtual laboratory exercises that can accurately reproduce the behavior of real systems and components without the prohibitive infrastructure and maintenance costs of real laboratories; flexibility in studying interrelated physical effects individually or in combination to facilitate learning; provide expertise and practical insights in areas, including industry-focused topics, that are not generally covered in traditional tertiary courses; provide exposure to, currently, the most widely used PDA tools in the industry. In this paper, details of VPIsystems' University program and its CAD-supported Photonics courses will be presented.

Optimization methods for gas liquefaction production in Algeria and for a firewater safety system for the Holy Area of Mina, in Saudi Arabia

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chergui, B.

1986-01-01

The major part of this study deals specifically with problems encountered in liquefied-gas production in Algeria. However, its developed methodology could be applied to other industrial units of similar importance (petrochemical, pipeline, etc.). Capital costs as well as manpower, operations, and maintenance costs are very high in such production, especially in Algeria, a foreign-technology dependent country. Moreover, the technical complexity of an LNG plan constitutes a further incentive for the formulation of mathematical models as tools toward attaining management efficiency. These models can form the basis for Decision Support Systems for use as well in improving the operations of anymore » major national industrial plant. The remainder of the dissertation consists of a conception and a study for an optimal firewater safety system for the Holy Area of Mina, in Saudi Arabia, where fire outbreaks cause significant losses in lives and property damages during the yearly pilgrimage. Part of the contribution of this study lies in the guidelines established for a Decision Support System, which will improve the user's effectiveness as a decision maker.« less

Wind Turbine Failures - Tackling current Problems in Failure Data Analysis

NASA Astrophysics Data System (ADS)

Reder, M. D.; Gonzalez, E.; Melero, J. J.

2016-09-01

The wind industry has been growing significantly over the past decades, resulting in a remarkable increase in installed wind power capacity. Turbine technologies are rapidly evolving in terms of complexity and size, and there is an urgent need for cost effective operation and maintenance (O&M) strategies. Especially unplanned downtime represents one of the main cost drivers of a modern wind farm. Here, reliability and failure prediction models can enable operators to apply preventive O&M strategies rather than corrective actions. In order to develop these models, the failure rates and downtimes of wind turbine (WT) components have to be understood profoundly. This paper is focused on tackling three of the main issues related to WT failure analyses. These are, the non-uniform data treatment, the scarcity of available failure analyses, and the lack of investigation on alternative data sources. For this, a modernised form of an existing WT taxonomy is introduced. Additionally, an extensive analysis of historical failure and downtime data of more than 4300 turbines is presented. Finally, the possibilities to encounter the lack of available failure data by complementing historical databases with Supervisory Control and Data Acquisition (SCADA) alarms are evaluated.

Information technology: 1. Planning and developing a human resources information system.

PubMed

Lederer, A L

1984-01-01

for the unwary, planning and implementing an HRIS can present a variety of pitfalls. Author Albert L. Lederer, who spent ten years installing such systems before joining the faculty of the University of Pittsburgh (as assistant professor of business administration), is fully cognizant of the pitfalls involved and the problems that personnel departments encounter in the process. After discussing what an HRIS can accomplish, he gives a thoroughgoing, detailed approach to developing such a system--from cost justification, to the personnel department's relationship with the data-processing department at each step, to deciding between buying a packaged system and developing a new system internally. Most important, he emphasizes, is to define requirements precisely and completely at the outset--those who don't are in for a lot of costly headaches. Much more is covered in this comprehensive approach--not the least of which is (for packaged systems) vendor analysis and contract negotiation (the contract stipulates the vendor's responsibilities in terms of software, installation service, maintenance, training, and documentation). One popular strategy for negotiating a contract is to choose the best two vendors and compare their offers throughout the negotiation; this results in a contract with excellent leverage for the buyer.

Parkes radio science system design and testing for Voyager Neptune encounter

NASA Technical Reports Server (NTRS)

Rebold, T. A.; Weese, J. F.

1989-01-01

The Radio Science System installed at Parkes, Australia for the Voyager Neptune encounter was specified to meet the same stringent requirements that were imposed upon the Deep Space Network Radio Science System. The system design and test methodology employed to meet these requirements at Parkes are described, and data showing the measured performance of the system are presented. The results indicate that the system operates with a comfortable margin on the requirements. There was a minor problem with frequency-dependent spurious signals which could not be fixed before the encounter. Test results characterizing these spurious signals are included.

A new multi-objective optimization model for preventive maintenance and replacement scheduling of multi-component systems

NASA Astrophysics Data System (ADS)

Moghaddam, Kamran S.; Usher, John S.

2011-07-01

In this article, a new multi-objective optimization model is developed to determine the optimal preventive maintenance and replacement schedules in a repairable and maintainable multi-component system. In this model, the planning horizon is divided into discrete and equally-sized periods in which three possible actions must be planned for each component, namely maintenance, replacement, or do nothing. The objective is to determine a plan of actions for each component in the system while minimizing the total cost and maximizing overall system reliability simultaneously over the planning horizon. Because of the complexity, combinatorial and highly nonlinear structure of the mathematical model, two metaheuristic solution methods, generational genetic algorithm, and a simulated annealing are applied to tackle the problem. The Pareto optimal solutions that provide good tradeoffs between the total cost and the overall reliability of the system can be obtained by the solution approach. Such a modeling approach should be useful for maintenance planners and engineers tasked with the problem of developing recommended maintenance plans for complex systems of components.

Training considerations for the intracoelomic implantation of electronic tags in fish with a summary of common surgical errors

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cooke, Steven J.; Wagner, Glenn N.; Brown, Richard S.

2011-01-01

Training is a fundamental part of all scientific and technical disciplines. This is particularly true for all types of surgeons. For surgical procedures, a number of skills are necessary to reduce mistakes. Trainees must learn an extensive yet standardized set of problem-solving and technical skills to handle challenges as they arise. There are currently no guidelines or consistent training methods for those intending to implant electronic tags in fish; this is surprising, considering documented cases of negative consequences of fish surgeries and information from studies having empirically tested fish surgical techniques. Learning how to do fish surgery once is insufficientmore » for ensuring the maintenance or improvement of surgical skill. Assessment of surgical skills is rarely incorporated into training, and is needed. Evaluation provides useful feedback that guides future learning, fosters habits of self-reflection and self-remediation, and promotes access to advanced training. Veterinary professionals should be involved in aspects of training to monitor basic surgical principles. We identified attributes related to knowledge, understanding, and skill that surgeons must demonstrate prior to performing fish surgery including a “hands-on” assessment using live fish. Included is a summary of common problems encountered by fish surgeons. We conclude by presenting core competencies that should be required as well as outlining a 3-day curriculum for training surgeons to conduct intracoelomic implantation of electronic tags. This curriculum could be offered through professional fisheries societies as professional development courses.« less

Use of computer modeling to investigate a dynamic interaction problem in the Skylab TACS quad-valve package

NASA Technical Reports Server (NTRS)

Hesser, R. J.; Gershman, R.

1975-01-01

A valve opening-response problem encountered during development of a control valve for the Skylab thruster attitude control system (TACS) is described. The problem involved effects of dynamic interaction among valves in the quad-redundant valve package. Also described is a detailed computer simulation of the quad-valve package which was helpful in resolving the problem.

A Practical Standardized Composite Nutrition Score Based on Lean Tissue Index: Application in Nutrition Screening and Prediction of Outcome in Hemodialysis Population.

PubMed

Chen, Huan-Sheng; Cheng, Chun-Ting; Hou, Chun-Cheng; Liou, Hung-Hsiang; Chang, Cheng-Tsung; Lin, Chun-Ju; Wu, Tsai-Kun; Chen, Chang-Hsu; Lim, Paik-Seong

2017-07-01

Rapid screening and monitoring of nutritional status is mandatory in hemodialysis population because of the increasingly encountered nutritional problems. Considering the limitations of previous composite nutrition scores applied in this population, we tried to develop a standardized composite nutrition score (SCNS) using low lean tissue index as a marker of protein wasting to facilitate clinical screening and monitoring and to predict outcome. This retrospective cohort used 2 databases of dialysis populations from Taiwan between 2011 and 2014. First database consisting of data from 629 maintenance hemodialysis patients was used to develop the SCNS and the second database containing data from 297 maintenance hemodialysis patients was used to validate this developed score. SCNS containing albumin, creatinine, potassium, and body mass index was developed from the first database using low lean tissue index as a marker of protein wasting. When applying this score in the original database, significantly higher risk of developing protein wasting was found for patients with lower SCNS (odds ratio 1.38 [middle tertile vs highest tertile, P < .0001] and 2.40 [lowest tertile vs middle tertile, P < .0001]). The risk of death was also shown to be higher for patients with lower SCNS (hazard ratio 4.45 [below median level vs above median level, P < .0001]). These results were validated in the second database. We developed an SCNS consisting of 4 easily available biochemical parameters. This kind of scoring system can be easily applied in different dialysis facilities for screening and monitoring of protein wasting. The wide application of body composition monitor in dialysis population will also facilitate the development of specific nutrition scoring model for individual facility. Copyright © 2017 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.

Training for Aviation Decision Making: The Naturalistic Decision Making Perspective

NASA Technical Reports Server (NTRS)

Orasanu, Judith; Shafto, Michael G. (Technical Monitor)

1995-01-01

This paper describes the implications of a naturalistic decision making (NDM) perspective for training air crews to make flight-related decisions. The implications are based on two types of analyses: (a) identification of distinctive features that serve as a basis for classifying a diverse set of decision events actually encountered by flight crews, and (b) performance strategies that distinguished more from less effective crews flying full-mission simulators, as well as performance analyses from NTSB accident investigations. Six training recommendations are offered: (1) Because of the diversity of decision situations, crews need to be aware that different strategies may be appropriate for different problems; (2) Given that situation assessment is essential to making a good decision, it is important to train specific content knowledge needed to recognize critical conditions, to assess risks and available time, and to develop strategies to verify or diagnose the problem; (3) Tendencies to oversimplify problems may be overcome by training to evaluate options in terms of goals, constraints, consequences, and prevailing conditions; (4) In order to provide the time to gather information and consider options, it is essential to manage the situation, which includes managing crew workload, prioritizing tasks, contingency planning, buying time (e.g., requesting holding or vectors), and using low workload periods to prepare for high workload; (5) Evaluating resource requirements ("What do I need?") and capabilities ("'What do I have?" ) are essential to making good decisions. Using resources to meet requirements may involve the cabin crew, ATC, dispatchers, and maintenance personnel; (6) Given that decisions must often be made under high risk, time pressure, and workload, train under realistic flight conditions to promote the development of robust decision skills.

Decision-problem state analysis methodology

NASA Technical Reports Server (NTRS)

Dieterly, D. L.

1980-01-01

A methodology for analyzing a decision-problem state is presented. The methodology is based on the analysis of an incident in terms of the set of decision-problem conditions encountered. By decomposing the events that preceded an unwanted outcome, such as an accident, into the set of decision-problem conditions that were resolved, a more comprehensive understanding is possible. All human-error accidents are not caused by faulty decision-problem resolutions, but it appears to be one of the major areas of accidents cited in the literature. A three-phase methodology is presented which accommodates a wide spectrum of events. It allows for a systems content analysis of the available data to establish: (1) the resolutions made, (2) alternatives not considered, (3) resolutions missed, and (4) possible conditions not considered. The product is a map of the decision-problem conditions that were encountered as well as a projected, assumed set of conditions that should have been considered. The application of this methodology introduces a systematic approach to decomposing the events that transpired prior to the accident. The initial emphasis is on decision and problem resolution. The technique allows for a standardized method of accident into a scenario which may used for review or the development of a training simulation.

Effect of job maintenance training program for employees with chronic disease - a randomized controlled trial on self-efficacy, job satisfaction, and fatigue.

PubMed

Varekamp, Inge; Verbeek, Jos H; de Boer, Angela; van Dijk, Frank J H

2011-07-01

Employees with a chronic physical condition may be hampered in job performance due to physical or cognitive limitations, pain, fatigue, psychosocial barriers, or because medical treatment interferes with work. This study investigates the effect of a group-training program aimed at job maintenance. Essential elements of the program are exploration of work-related problems, communication at the workplace, and the development and implementation of solutions. Participants with chronic physical diseases were randomly assigned to the intervention (N=64) or the control group (N=58). Participants were eligible for the study if they had a chronic physical disease, paid employment, experienced work-related problems, and were not on long-term 100% sick leave. Primary outcome measures were self-efficacy in solving work- and disease-related problems (14-70), job dissatisfaction (0-100), fatigue (20-140) and job maintenance measured at 4-, 8-, 12- and 24-month follow-up. We used GLM repeated measures for the analysis. After 24 months, loss to follow-up was 5.7% (7/122). Self-efficacy increased and fatigue decreased significantly more in the experimental than the control group [10 versus 4 points (P=0.000) and 19 versus 8 points (P=0.032), respectively]. Job satisfaction increased more in the experimental group but not significantly [6 versus 0 points (P=0.698)]. Job maintenance was 87% in the experimental and 91% in the control group, which was not a significant difference. Many participants in the control group also undertook actions to solve work-related problems. Empowerment training increases self-efficacy and helps to reduce fatigue complaints, which in the long term could lead to more job maintenance. Better understanding of ways to deal with work-related problems is needed to develop more efficient support for employees with a chronic disease.

Development of a rockfall hazard rating matrix for the State of Ohio.

DOT National Transportation Integrated Search

2005-03-01

Although Ohio is not considered a "mountainous state", it is well documented that rockfalls are prevalent. Rockfalls pose a : considerable risk to traffic safety, create maintenance problems, and exert a strain on limited maintenance funds available ...

Development of a Rockfall Hazard Rating Matrix for the State of Ohio

DOT National Transportation Integrated Search

2005-03-01

Although Ohio is not considered a "mountainous state", it is well documented that rockfalls are prevalent. Rockfalls pose a : considerable risk to traffic safety, create maintenance problems, and exert a strain on limited maintenance funds available ...

Sidewalk undermining studies : phase I, hydrology and maintenance studies.

DOT National Transportation Integrated Search

1975-01-01

Studies of the maintenance and hydrology considerations involved in a sidewalk undermining problem in the Fairfax area are reported. Sidewalk undermining is attributed principally to a highly erodible soil found in much of the area and to the fact th...

In Print or Out of Print? The Continuing Problem.

ERIC Educational Resources Information Center

Kayden, Mimi

1982-01-01

Briefly describes the problems encountered by libraries in attempting to purchase out-of-stock books and discusses some of the reasons for changes in the way publishers handle backlist materials, including sales volume and its relation to increased printing costs. (JL)

The Impaired Social Worker.

ERIC Educational Resources Information Center

Reamer, Frederic G.

1992-01-01

Discusses concept of the impaired professional; reviews research on various types of impairment (personality disorders, depression and other emotional problems, marital problems, and physical illness), prevalence and causes of impairment, and responses to it; and outlines model assessment and action plan for social workers who encounter an…

The Brown University Child and Adolescent Behavior Letter, 1999.

ERIC Educational Resources Information Center

Lipsitt, Lewis P., Ed.

1999-01-01

These 12 monthly issues from 1999 explore problems encountered by children and adolescents. Regular features include "Keep Your Eye On...," brief accounts of research into childhood and adolescent problems; "What's New in Research," summarizing research from recent publications and professional conferences;…

Practical Parenting: Successful Strategies for Solving Your Child's Behaviour Problems.

ERIC Educational Resources Information Center

Stenhouse, Glen

Recognizing that all parents encounter challenges in raising their children, this book presents practical strategies for solving common behavior problems. Chapter 1, "Bonding," concerns the development of parent-child attachment. Chapter 2, "Encouraging Development," discusses "hot-housing," language development, and…

Segregation of asphalt mixes caused by surge silos : final report.

DOT National Transportation Integrated Search

1982-01-01

Segregation of asphalt mixes continues to be a problem in Virginia, particularly with base mixes and coarse surface mixes. Although the problem is encountered primarily on jobs using surge silos, it has been related to other factors such as mix desig...

The Brown University Child and Adolescent Behavior Letter, 1998.

ERIC Educational Resources Information Center

Lipsitt, Lewis P., Ed.

1998-01-01

These 12 monthly issues from 1998 explore problems encountered by children and adolescents. Regular features include "Keep Your Eye On...," brief accounts of research into childhood and adolescent problems, "What's New in Research," summarizing research from recent publications and professional conferences;…

Establishing and Maintaining Treatment Effects with Less Intrusive Consequences VIA a Pairing Procedure

PubMed Central

Vorndran, Christina M; Lerman, Dorothea C

2006-01-01

The generality and long-term maintenance of a pairing procedure designed to improve the efficacy of less intrusive procedures were evaluated for the treatment of problem behavior maintained by automatic reinforcement exhibited by 2 individuals with developmental disabilities. Results suggested that a less intrusive procedure could be established as a conditioned punisher by pairing it with an effective punisher contingent on problem behavior. Generalization across multiple therapists was demonstrated for both participants. However, generalization to another setting was not achieved for 1 participant until pairing was conducted in the second setting. Long-term maintenance was observed with 1 participant in the absence of further pairing trials. Maintenance via intermittent pairing trials was successful for the other participant. PMID:16602384

Obstacles Related to Structuring for Mathematization Encountered by Students When Solving Physics Problems

ERIC Educational Resources Information Center

Niss, Martin

2017-01-01

This paper studies the cognitive obstacles related to one aspect of mathematization in physics problem-solving, namely, what might be called "structuring for mathematization," where the problem situation is structured in such a way that a translation to a mathematical universe can be done. We report the results of an analysis of four…

Tree planting - strip-mined area in Maryland

Treesearch

Fred L. Bagley

1980-01-01

This report is written to elucidate some of the problems encountered in the planting of trees on strip-mined areas in Maryland. When problems are recognized, normally a solution (or at least, an improvement) can be instituted to alleviate the problem. The methods cited herein are those of experienced foresters engaged in strip-mine planting during the past seventeen...

Reflective Teaching via a Problem Exploration--Teaching Adaptations--Resolution Cycle: A Mixed Methods Study of Preservice Teachers' Reflective Notes

ERIC Educational Resources Information Center

Hayden, H. Emily; Chiu, Ming Ming

2015-01-01

We explore development of elementary preservice teachers' reflective practices as they solved problems encountered while teaching in a reading clinic. Written reflections (N = 175) were collected across 8 weeks from 23 preservice teachers and analyzed to investigate relationships among problem exploration, teaching adaptations, and problem…

Problem Solving in Technology Rich Contexts: Mathematics Sense Making in Out-of-School Environments

ERIC Educational Resources Information Center

Lowrie, Tom

2005-01-01

This investigation describes the way in which a case study participant (aged 7) represented, posed and solved problems in a technology game-based environment. The out-of-school problem-solving context placed numeracy demands on the participant that were more complex and sophisticated than the type of mathematics experiences he encountered in…

Modelling Difficulties and Their Overcoming Strategies in the Solution of a Modelling Problem

ERIC Educational Resources Information Center

Dede, Ayse Tekin

2016-01-01

The purpose of the study is to reveal the elementary mathematics student teachers' difficulties encountered in the solution of a modelling problem, the strategies to overcome those difficulties and whether the strategies worked or not. Nineteen student teachers solved the modelling problem in their four or five-person groups, and the video records…

Complex Problem Solving in Radiologic Technology: Understanding the Roles of Experience, Reflective Judgment, and Workplace Culture

ERIC Educational Resources Information Center

Yates, Jennifer L.

2011-01-01

The purpose of this research study was to explore the process of learning and development of problem solving skills in radiologic technologists. The researcher sought to understand the nature of difficult problems encountered in clinical practice, to identify specific learning practices leading to the development of professional expertise, and to…

Functional Behavioral Assessment for a Boy with Duchenne Muscular Dystrophy and Problem Behavior: A Case Study from Greece

ERIC Educational Resources Information Center

Theodoridou, Zoe; Koutsoklenis, Athanasios

2013-01-01

This article focuses on the application of functional behavioral assessment (FBA) to design a positive behavior intervention (PBI) for a boy with Duchenne muscular dystrophy (DMD) who encounters serious difficulties at the mainstream school because of behavioral problems and physical limitations. After the definition of problem behavior and its…

Science Curriculum from the Perspectives of Turkish Teachers: Problems Encountered and Suggestions for Solutions

ERIC Educational Resources Information Center

Bekmezci, Sinan Muhammet; Ates, Özlem

2017-01-01

The purpose of this research is to identify the problems that teachers have experienced during the implementation of the science curriculum and their suggestions for solution to these problems. In the research, survey model has been used among the descriptive research methods in which quantitative and qualitative data have been used together. The…

An Analysis of Problems in College Students' Participation in the Western China Program

ERIC Educational Resources Information Center

Yumei, Yi

2008-01-01

Since its initiation in 2003, the College Student Western China Program has had several satisfying achievements. At the same time, however, problems exist in the project. This article gives a brief analysis of problems encountered in the project from the aspects of publicity and campaign work, plans and schedules, student participation, voluntary…

Young Filipino Students Making Sense of Arithmetic Word Problems in English

ERIC Educational Resources Information Center

Bautista, Debbie; Mulligan, Joanne; Mitchelmore, Michael

2009-01-01

Young Filipino children are expected to solve mathematical word problems in English, a task which they typically encounter only in schools. In this exploratory study, task-based interviews were conducted with seven Filipino children from a public school. The children were asked to read and solve addition and subtraction word problems in English or…

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

NASA Astrophysics Data System (ADS)

Volten, H.; Bergwerff, J. B.; Haaima, M.; Lolkema, D. E.; Berkhout, A. J. C.; van der Hoff, G. R.; Potma, C. J. M.; Wichink Kruit, R. J.; van Pul, W. A. J.; Swart, D. P. J.

2011-08-01

We present two Differential Optical Absorption Spectroscopy (DOAS) instruments built at RIVM, the RIVM DOAS and the miniDOAS. Both instruments provide virtually interference free measurements of NH3 concentrations in the atmosphere, since they measure over an open path, without suffering from inlet problems or interference problems by ammonium aerosols dissociating on tubes or filters. They measure concentrations up to at least 200 μg m-3, have a fast response, low maintenance demands, and a high up-time. The RIVM DOAS has a high accuracy of typically 0.15 μg m-3 for ammonia over 5-min averages and over a total light path of 100 m. The miniDOAS has been developed for application in measurement networks such as the Dutch National Air Quality Monitoring Network (LML). Compared to the RIVM DOAS it has a similar accuracy, but is significantly reduced in size, costs, and handling complexity. The RIVM DOAS and miniDOAS results showed excellent agreement (R2 = 0.996) during a field measurement campaign in Vredepeel, the Netherlands. This measurement site is located in an agricultural area and is characterized by highly variable, but on average high ammonia concentrations in the air. The RIVM-DOAS and miniDOAS results were compared to the results of the AMOR instrument, a continuous-flow wet denuder system, which is currently used in the LML. Averaged over longer time spans of typically a day the (mini)DOAS and AMOR results agree reasonably well, although an offset of the AMOR values compared to the (mini)DOAS results exists. On short time scales the (mini)DOAS shows a faster response and does not show the memory effects due to inlet tubing and transport of absorption fluids encountered by the AMOR. Due to its high accuracy, high uptime, low maintenance and its open path, the (mini)DOAS shows a good potential for flux measurements by using two (or more) systems in a gradient set-up and applying the aerodynamic gradient technique.

Two instruments based on differential optical absorption spectroscopy (DOAS) to measure accurate ammonia concentrations in the atmosphere

NASA Astrophysics Data System (ADS)

Volten, H.; Bergwerff, J. B.; Haaima, M.; Lolkema, D. E.; Berkhout, A. J. C.; van der Hoff, G. R.; Potma, C. J. M.; Wichink Kruit, R. J.; van Pul, W. A. J.; Swart, D. P. J.

2012-02-01

We present two Differential Optical Absorption Spectroscopy (DOAS) instruments built at RIVM: the RIVM DOAS and the miniDOAS. Both instruments provide virtually interference-free measurements of NH3 concentrations in the atmosphere, since they measure over an open path, without suffering from inlet problems or interference problems by ammonium aerosols dissociating on tubes or filters. They measure concentrations up to at least 200 μg m-3, have a fast response, low maintenance demands, and a high up-time. The RIVM DOAS has a high accuracy of typically 0.15 μg m-3 for ammonia for 5-min averages and over a total light path of 100 m. The miniDOAS has been developed for application in measurement networks such as the Dutch National Air Quality Monitoring Network (LML). Compared to the RIVM DOAS it has a similar accuracy, but is significantly reduced in size, costs, and handling complexity. The RIVM DOAS and miniDOAS results showed excellent agreement (R2 = 0.996) during a field measurement campaign in Vredepeel, the Netherlands. This measurement site is located in an agricultural area and is characterized by highly variable, but on average high ammonia concentrations in the air. The RIVM-DOAS and miniDOAS results were compared to the results of the AMOR instrument, a continuous-flow wet denuder system, which is currently used in the LML. Averaged over longer time spans of typically a day, the (mini)DOAS and AMOR results agree reasonably well, although an offset of the AMOR values compared to the (mini)DOAS results exists. On short time scales, the (mini)DOAS shows a faster response and does not show the memory effects due to inlet tubing and transport of absorption fluids encountered by the AMOR. Due to its high accuracy, high uptime, low maintenance and its open path, the (mini)DOAS shows a good potential for flux measurements by using two (or more) systems in a gradient set-up and applying the aerodynamic gradient technique.

Methods of increasing efficiency and maintainability of pipeline systems

NASA Astrophysics Data System (ADS)

Ivanov, V. A.; Sokolov, S. M.; Ogudova, E. V.

2018-05-01

This study is dedicated to the issue of pipeline transportation system maintenance. The article identifies two classes of technical-and-economic indices, which are used to select an optimal pipeline transportation system structure. Further, the article determines various system maintenance strategies and strategy selection criteria. Meanwhile, the maintenance strategies turn out to be not sufficiently effective due to non-optimal values of maintenance intervals. This problem could be solved by running the adaptive maintenance system, which includes a pipeline transportation system reliability improvement algorithm, especially an equipment degradation computer model. In conclusion, three model building approaches for determining optimal technical systems verification inspections duration were considered.

[Medical Equipment Maintenance Methods].

PubMed

Liu, Hongbin

2015-09-01

Due to the high technology and the complexity of medical equipment, as well as to the safety and effectiveness, it determines the high requirements of the medical equipment maintenance work. This paper introduces some basic methods of medical instrument maintenance, including fault tree analysis, node method and exclusive method which are the three important methods in the medical equipment maintenance, through using these three methods for the instruments that have circuit drawings, hardware breakdown maintenance can be done easily. And this paper introduces the processing methods of some special fault conditions, in order to reduce little detours in meeting the same problems. Learning is very important for stuff just engaged in this area.

Expert system applications for army vehicle diagnostics

DOE Office of Scientific and Technical Information (OSTI.GOV)

Halle, R.F.

1987-01-01

Bulky manuals, limited training procedures, and complex Automatic Test Equipment are but a few of the problems a mechanic must face when trying to repair many of the military's new and highly complex vehicle systems. Recent technological advances in Expert Systms has given the mechanic the potential to solve many of these problems and to actually enhance his maintenance proficiency. This paper describes both the history of and the future potential of the Expert System and how it could impact on the present military maintenance system.

Reminder Cards Improve Physician Documentation of Obesity But Not Obesity Counseling.

PubMed

Shungu, Nicholas; Miller, Marshal N; Mills, Geoffrey; Patel, Neesha; de la Paz, Amanda; Rose, Victoria; Kropa, Jill; Edi, Rina; Levy, Emily; Crenshaw, Margaret; Hwang, Chris

2015-01-01

Physicians frequently fail to document obesity and obesity-related counseling. We sought to determine whether attaching a physical reminder card to patient encounter forms would increase electronic medical record (EMR) assessment of and documentation of obesity and dietary counseling. Reminder cards for obesity documentation were attached to encounter forms for patient encounters over a 2-week intervention period. For visits in the intervention period, the EMR was retrospectively reviewed for BMI, assessment of "obesity" or "morbid obesity" as an active problem, free-text dietary counseling within physician notes, and assessment of "dietary counseling" as an active problem. These data were compared to those collected through a retrospective chart review during a 2-week pre-intervention period. We also compared physician self-report of documentation via reminder cards with EMR documentation. We found significant improvement in the primary endpoint of assessment of "obesity" or "morbid obesity" as an active problem (42.5% versus 28%) compared to the pre-intervention period. There was no significant difference in the primary endpoints of free-text dietary counseling or assessment of "dietary counseling" as an active problem between the groups. Physician self-reporting of assessment of "obesity" or "morbid obesity" as an active problem (77.7% versus 42.5%), free-text dietary counseling on obesity (69.1% versus 35.4%) and assessment of "dietary counseling" as an active problem (54.3% versus 25.2%) were all significantly higher than those reflected in EMR documentation. This study demonstrates that physical reminder cards are a successful means of increasing obesity documentation rates among providers but do not necessarily increase rates of obesity-related counseling or documentation of counseling. Our study suggests that even with such interventions, physicians are likely under-documenting obesity and counseling compared to self-reported rates.

Maintenance and Logistics Support for the International Monitoring System Network of the CTBTO

NASA Astrophysics Data System (ADS)

Haslinger, F.; Brely, N.; Akrawy, M.

2007-05-01

The global network of the International Monitoring System (IMS) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), once completed, will consist of 321 monitoring facilities of four different technologies: hydroacoustic, seismic, infrasonic, and radionuclide. As of today, about 65% of the installations are completed and contribute data to the products issued by the International Data Centre (IDC) of the CTBTO. In order to accomplish the task to reliably collect evidence for any potential nuclear test explosion anywhere on the planet, all stations are required to perform to very high data availability requirements (at least 98% data availability over a 12-month period). To enable reaching this requirement, a three-layer concept has been developed to allow efficient support of the IMS stations: Operations, Maintenance and Logistics, and Engineering. Within this concept Maintenance and Logistics provide second level support of the stations, whereby problems arising at the station are assigned through the IMS ticket system to Maintenance if they cannot be resolved on the Operations level. Maintenance will then activate the required resources to appropriately address and ultimately resolve the problem. These resources may be equipment support contracts, other third party contracts, or the dispatch of a maintenance team. Engineering Support will be activated if the problem requires redesign of the station or after catastrophic failures when a total rebuild of a station may be necessary. In this model, Logistics Support is responsible for parts replenishment and support contract management. Logistics Support also collects and analyzes relevant failure mode and effect information, develops supportability models, and has the responsibility for document management, obsolescence, risk & quality, and configuration management, which are key elements for efficient station support. Maintenance Support in addition is responsible for maintenance strategies, for planning and oversight of the execution of preventive maintenance programs by the Station Operators, and for review of operational troubleshooting procedures used in first level support. Particular challenges for the efficient and successful Maintenance and Logistics Support of the IMS network lie in the specific political boundary conditions regulating its implementation, in the fact that all IMS facilities and their equipment are owned by the respective host countries, and in finding the appropriate balance between outsourcing services and retaining essential in-house expertise.

Real Time Maintenance Approval and Required IMMT Coordination

NASA Technical Reports Server (NTRS)

Burchell, S.

2016-01-01

Payloads are assessed for nominal operations. Payload Developers have the option of performing a maintenance hazard assessment (MHA) for potential maintenance activities. When POIC (Payload Operations and Integration Center) Safety reviews an OCR calling for a maintenance procedure, we cannot approve it without a MHA. If no MHA exists, we contact MER (Mission Evaluation Room) Safety. Depending on the nature of the problem, MER Safety has the option to: Analyze and grant approval themselves; Direct the payload back to the ISRP (Integrated Safety Review Panel); Direct the payload to the IMMT (Increment Mission Management Team).

A Minimum (Delta)V Orbit Maintenance Strategy for Low-Altitude Missions Using Burn Parameter Optimization

NASA Technical Reports Server (NTRS)

Brown, Aaron J.

2011-01-01

Orbit maintenance is the series of burns performed during a mission to ensure the orbit satisfies mission constraints. Low-altitude missions often require non-trivial orbit maintenance (Delta)V due to sizable orbital perturbations and minimum altitude thresholds. A strategy is presented for minimizing this (Delta)V using impulsive burn parameter optimization. An initial estimate for the burn parameters is generated by considering a feasible solution to the orbit maintenance problem. An example demonstrates the dV savings from the feasible solution to the optimal solution.

Medical support for law enforcement-extended operations incidents.

PubMed

Levy, Matthew J; Tang, Nelson

2014-01-01

As the complexity and frequency of law enforcement-extended operations incidents continue to increase, so do the opportunities for adverse health and well-being impacts on the responding officers. These types of clinical encounters have not been well characterized nor have the medical response strategies which have been developed to effectively manage these encounters been well described. The purpose of this article is to provide a descriptive epidemiology of the clinical encounters reported during extended law enforcement operations, as well as to describe a best practices approach for their effective management. This study retrospectively examined the clinical encounters of the Maryland State Police (MSP) Tactical Medical Unit (TMU) during law enforcement extended operations incidents lasting 8 or more hours. In addition, a qualitative analysis was performed on clinical data collected by federal law enforcement agencies during their extended operations. Forty-four percent of missions (455/1,047) supported by the MSP TMU lasted 8 or more hours. Twenty-six percent of these missions (117/455) resulted in at least one patient encounter. Nineteen percent of patient chief complaints (45/238) were related to heat illness/ dehydration. Fifteen percent of encounters (36/238) were for musculoskeletal injury/pain. Eight percent of patients (19/238) had nonspecific sick call (minor illness) complaints. The next most common occurring complaints were cold-related injuries, headache, sinus congestion, and wound/laceration, each of which accounted for 7 percent of patients (16/238), respectively. Analysis of federal law enforcement agencies' response to such events yielded similar clinical encounters. A wide range of health problems are reported by extended law enforcement operations personnel. Timely and effective treatment of these problems can help ensure that the broader operations mission is not compromised. An appropriate operational strategy for managing health complaints reported during extended operations involves the deployment of a well-trained medical support team using the core concepts of tactical emergency medical support.

Evaluation of artillery equipment maintenance support capability based on grey clustering

NASA Astrophysics Data System (ADS)

Zhai, Mei-jie; Gao, Peng

2017-12-01

This paper, the theory and method of evaluating the capability of equipment maintenance support in China and abroad are studied, from the point of view of the combat task of artillery troops and the strategic attachment in the future military struggle. This paper establishes the framework of the evaluation Index system of the equipment maintenance support capability of the artillery units, and applies the grey clustering method to the evaluation of the equipment maintenance support capability of the artillery units, and finally evaluates the equipment maintenance and support capability of the artillery brigade as an example, and analyzes the evaluation results. This paper finds out the outstanding problems existing in the maintenance and support of military equipment, and puts forward some constructive suggestions, in order to improve the status of military equipment maintenance and support and improve the level of future equipment maintenance.

The Role of Automatic Negative Reinforcement in Clinical Problems

ERIC Educational Resources Information Center

Miltenberger, Raymond G.

2005-01-01

This paper discusses the role of automatic negative reinforcement in the maintenance of clinical problems. Following a brief introduction to the functional conceptualization of clinical problems and discussion of four classes of reinforcement maintaining clinical problems, the paper suggests that automatic negative reinforcement is an understudied…

Using video to introduce clinical materials.

PubMed

Kommalage, Mahinda; Senadheera, Chandanie

2012-08-01

The early introduction of clinical material is a recognised strategy in medical education. The University of Ruhana Medical School, where a traditional curriculum is followed, offers students pre-clinical subjects without clinical exposure during their first and second years. Clinical materials in the form of videos were introduced to first-year students. In the videos, patients and their relatives described the diseases and related problems. Students were instructed to identify the problems encountered by patients and relatives. Each video was followed by a discussion of the problems identified by the students. The medical, social and economic problems encountered by patients and relatives were emphasised during post-video discussions. A lecture was conducted linking the contents of the videos to subsequent lectures. The aim of this study is to investigate whether combining teaching preclinical material with a video presentation of relevant clinical cases facilitates the interest and understanding of students. Quantitative data were collected using a questionnaire, whereas qualitative data were collected using focus group discussions. Quantitative data showed that students appreciated the video, had 'better' knowledge acquisition and a 'better' understanding of problems encountered by patients. Qualitative analysis highlighted the following themes: increased interest; enhanced understanding; relevance of basic knowledge to clinical practice; orientation to profession; and personalising theories. The introduction of patients in the form of videos helped students to understand the relevance of subject material for clinical practice, increased their interest and facilitated a better understanding of the subject material. Therefore, it seems video is a feasible medium to introduce clinical materials to first-year students who follow a traditional curriculum in a resource-limited environment. © Blackwell Publishing Ltd 2012.

Some Problems in Studying the English Elements in the Main European Languages

ERIC Educational Resources Information Center

Filipovic, Rudolf

1972-01-01

A study is being done, to be reported on subsequently, on the infiltrations of English into the languages of Europe. Objectives of the project, some problems encountered, and planned results and products are discussed. See FL 508 197 for availability. (RM)

Academic Value of Internships in Agronomy: A Survey.

ERIC Educational Resources Information Center

Herring, Matthew D.; And Others

1990-01-01

A survey of the academic requirements of internships, benefits in taking part in an internship, and problems encountered in internship programs are described. Results indicated that one of the problems with internship programs occurred when faculty did not have direct control over the experience. (CW)

The Powers That Be: AAVE as the Composition Curriculum.

ERIC Educational Resources Information Center

Richardson, Elaine

This Powerpoint presentation argues that the problems encountered in implementing African-centered curriculum into the university composition classroom attest to the need for African centered education in kindergarten through university level educational institutions. The solution of the problem of African American students' disproportionate…

Understanding the Persistence of Plague Foci in Madagascar

PubMed Central

Andrianaivoarimanana, Voahangy; Kreppel, Katharina; Elissa, Nohal; Duplantier, Jean-Marc; Carniel, Elisabeth; Rajerison, Minoarisoa; Jambou, Ronan

2013-01-01

Plague, a zoonosis caused by Yersinia pestis, is still found in Africa, Asia, and the Americas. Madagascar reports almost one third of the cases worldwide. Y. pestis can be encountered in three very different types of foci: urban, rural, and sylvatic. Flea vector and wild rodent host population dynamics are tightly correlated with modulation of climatic conditions, an association that could be crucial for both the maintenance of foci and human plague epidemics. The black rat Rattus rattus, the main host of Y. pestis in Madagascar, is found to exhibit high resistance to plague in endemic areas, opposing the concept of high mortality rates among rats exposed to the infection. Also, endemic fleas could play an essential role in maintenance of the foci. This review discusses recent advances in the understanding of the role of these factors as well as human behavior in the persistence of plague in Madagascar. PMID:24244760

Understanding the persistence of plague foci in Madagascar.

PubMed

Andrianaivoarimanana, Voahangy; Kreppel, Katharina; Elissa, Nohal; Duplantier, Jean-Marc; Carniel, Elisabeth; Rajerison, Minoarisoa; Jambou, Ronan

2013-11-01

Plague, a zoonosis caused by Yersinia pestis, is still found in Africa, Asia, and the Americas. Madagascar reports almost one third of the cases worldwide. Y. pestis can be encountered in three very different types of foci: urban, rural, and sylvatic. Flea vector and wild rodent host population dynamics are tightly correlated with modulation of climatic conditions, an association that could be crucial for both the maintenance of foci and human plague epidemics. The black rat Rattus rattus, the main host of Y. pestis in Madagascar, is found to exhibit high resistance to plague in endemic areas, opposing the concept of high mortality rates among rats exposed to the infection. Also, endemic fleas could play an essential role in maintenance of the foci. This review discusses recent advances in the understanding of the role of these factors as well as human behavior in the persistence of plague in Madagascar.

The dynamics of oceanic fronts. I - The Gulf Stream

NASA Technical Reports Server (NTRS)

Kao, T. W.

1980-01-01

The establishment and maintenance of the mean hydrographic properties of large-scale density fronts in the upper ocean is considered. The dynamics is studied by posing an initial value problem starting with a near-surface discharge of buoyant water with a prescribed density deficit into an ambient stationary fluid of uniform density; full time dependent diffusion and Navier-Stokes equations are then used with constant eddy diffusion and viscosity coefficients, together with a constant Coriolis parameter. Scaling analysis reveals three independent scales of the problem including the radius of deformation of the inertial length, buoyancy length, and diffusive length scales. The governing equations are then suitably scaled and the resulting normalized equations are shown to depend on the Ekman number alone for problems of oceanic interest. It is concluded that the mean Gulf Stream dynamics can be interpreted in terms of a solution of the Navier-Stokes and diffusion equations, with the cross-stream circulation responsible for the maintenance of the front; this mechanism is suggested for the maintenance of the Gulf Stream dynamics.

CREW CHIEF: A computer graphics simulation of an aircraft maintenance technician

NASA Technical Reports Server (NTRS)

Aume, Nilss M.

1990-01-01

Approximately 35 percent of the lifetime cost of a military system is spent for maintenance. Excessive repair time is caused by not considering maintenance during design. Problems are usually discovered only after a mock-up has been constructed, when it is too late to make changes. CREW CHIEF will reduce the incidence of such problems by catching design defects in the early design stages. CREW CHIEF is a computer graphic human factors evaluation system interfaced to commercial computer aided design (CAD) systems. It creates a three dimensional man model, either male or female, large or small, with various types of clothing and in several postures. It can perform analyses for physical accessibility, strength capability with tools, visual access, and strength capability for manual materials handling. The designer would produce a drawing on his CAD system and introduce CREW CHIEF in it. CREW CHIEF's analyses would then indicate places where problems could be foreseen and corrected before the design is frozen.

What Makes a Social Encounter Meaningful: The Impact of Social Encounters of Homeschooled Children on Emotional and Behavioral Problems

ERIC Educational Resources Information Center

Guterman, Oz; Neuman, Ari

2017-01-01

In modern society, a large part of the socialization process occurs in schools. Therefore, one of the most significant questions raised with regard to homeschooling concerns the impact of this type of education on the emotional world of the child. However, there is almost no mention in the research of how the nature of the social activity of…

Lifetime of binary asteroids versus gravitational encounters and collisions

NASA Technical Reports Server (NTRS)

Chauvineau, Bertrand; Farinella, Paolo; Mignard, F.

1992-01-01

We investigate the effect on the dynamics of a binary asteroid in the case of a near encounter with a third body. The dynamics of the binary is modeled as a two-body problem perturbed by an approaching body in the following ways: near encounters and collisions with a component of the system. In each case, the typical value of the two-body energy variation is estimated, and a random walk for the cumulative effect is assumed. Results are applied to some binary asteroid candidates. The main conclusion is that the collisional disruption is the dominant effect, giving lifetimes comparable to or larger than the age of the solar system.

Maintenance of Microcomputers. Manual and Apple II Session, IBM Session.

ERIC Educational Resources Information Center

Coffey, Michael A.; And Others

This guide describes maintenance procedures for IBM and Apple personal computers, provides information on detecting and diagnosing problems, and details diagnostic programs. Included are discussions of printers, terminals, disks, disk drives, keyboards, hardware, and software. The text is supplemented by various diagrams. (EW)

A Homeowner's Guide to Septic Systems.

ERIC Educational Resources Information Center

Sponenberg, Torsten D.; And Others

This booklet provides basic information on septic system use and maintenance. Written for current and prospective homeowners, it offers guidelines for proper operation of household septic systems. In addition, (1) components of individual systems are diagrammatically explained; (2) suggestions for maintenance are outlined; (3) problem areas and…

Floors: Selection and Maintenance.

ERIC Educational Resources Information Center

Berkeley, Bernard

Flooring for institutional, commercial, and industrial use is described with regard to its selection, care, and maintenance. The following flooring and subflooring material categories are discussed--(1) resilient floor coverings, (2) carpeting, (3) masonry floors, (4) wood floors, and (5) "formed-in-place floors". The properties, problems,…

Game-Theoretic Models for Usage-based Maintenance Contract

NASA Astrophysics Data System (ADS)

Husniah, H.; Wangsaputra, R.; Cakravastia, A.; Iskandar, B. P.

2018-03-01

A usage-based maintenance contracts with coordination and non coordination between two parties is studied in this paper. The contract is applied to a dump truck operated in a mining industry. The situation under study is that an agent offers service contract to the owner of the truck after warranty ends. This contract has only a time limit but no usage limit. If the total usage per period exceeds the maximum usage allowed in the contract, then the owner will be charged an additional cost. In general, the agent (Original Equipment Manufacturer/OEM) provides a full coverage of maintenance, which includes PM and CM under the lease contract. The decision problem for the owner is to select the best option offered that fits to its requirement, and the decision problem for the agent is to find the optimal maintenance efforts for a given price of the service option offered. We first find the optimal decisions using coordination scheme and then with non coordination scheme for both parties.

An optimization method for condition based maintenance of aircraft fleet considering prognostics uncertainty.

PubMed

Feng, Qiang; Chen, Yiran; Sun, Bo; Li, Songjie

2014-01-01

An optimization method for condition based maintenance (CBM) of aircraft fleet considering prognostics uncertainty is proposed. The CBM and dispatch process of aircraft fleet is analyzed first, and the alternative strategy sets for single aircraft are given. Then, the optimization problem of fleet CBM with lower maintenance cost and dispatch risk is translated to the combinatorial optimization problem of single aircraft strategy. Remain useful life (RUL) distribution of the key line replaceable Module (LRM) has been transformed into the failure probability of the aircraft and the fleet health status matrix is established. And the calculation method of the costs and risks for mission based on health status matrix and maintenance matrix is given. Further, an optimization method for fleet dispatch and CBM under acceptable risk is proposed based on an improved genetic algorithm. Finally, a fleet of 10 aircrafts is studied to verify the proposed method. The results shows that it could realize optimization and control of the aircraft fleet oriented to mission success.

An Optimization Method for Condition Based Maintenance of Aircraft Fleet Considering Prognostics Uncertainty

PubMed Central

Chen, Yiran; Sun, Bo; Li, Songjie

2014-01-01

An optimization method for condition based maintenance (CBM) of aircraft fleet considering prognostics uncertainty is proposed. The CBM and dispatch process of aircraft fleet is analyzed first, and the alternative strategy sets for single aircraft are given. Then, the optimization problem of fleet CBM with lower maintenance cost and dispatch risk is translated to the combinatorial optimization problem of single aircraft strategy. Remain useful life (RUL) distribution of the key line replaceable Module (LRM) has been transformed into the failure probability of the aircraft and the fleet health status matrix is established. And the calculation method of the costs and risks for mission based on health status matrix and maintenance matrix is given. Further, an optimization method for fleet dispatch and CBM under acceptable risk is proposed based on an improved genetic algorithm. Finally, a fleet of 10 aircrafts is studied to verify the proposed method. The results shows that it could realize optimization and control of the aircraft fleet oriented to mission success. PMID:24892046

Drying shrinkage problems in high-plastic clay soils in Oklahoma.

DOT National Transportation Integrated Search

2013-08-01

Longitudinal cracking in pavements due to drying shrinkage of high-plastic subgrade soils has been a major : problem in Oklahoma. Annual maintenance to seal and repair these distress problems costs significant amount of : money to the state. The long...

Social Problems in Turkish Social Studies Coursebooks and Workbooks

ERIC Educational Resources Information Center

Yesiltas, Erkan; Eryilmaz, Önder; Pehlivan, Aysegül

2016-01-01

In Turkey, the social studies course, which is taught in elementary 5th to 7th grades, prepares students to solve problems they may encounter in their future life. Therefore, the teaching of social problems to help students get to know them is one of the most important issues for the social studies course. The primary aim of this study is to…

"Students Get Bogged Down": How Religious Israeli Elementary Teachers View Problems and Solutions in Bible Teaching

ERIC Educational Resources Information Center

Walfish, Ruth A.; Brody, David L.

2018-01-01

Bible teachers in contemporary society confront serious problems related to the nature of the biblical text and the socio-cultural context of their teaching. This study, based on semi-structured interviews, examines the problems that five expert religious Israeli elementary school teachers encounter in their teaching and the solutions they employ.…

The Real World of the Beginning Teacher.

ERIC Educational Resources Information Center

National Education Association, Washington, DC. National Commission on Teacher Education and Professional Standards.

Problems and goals of beginning teachers are the subject of these speeches presented by both experienced and beginning teachers at the 1965 national conference of the National Commission on Teacher Education and Professional Standards. The problems include the differences between teacher expectations and encounters, unrealistic teaching and…

Virtual Bridge Design

ERIC Educational Resources Information Center

Bisogno, Janet; JeanPierre, Bobby

2008-01-01

The West Point Bridge Design (WPBD) building project engages students in project-based learning by giving them a real-life problem to solve. By using technology, students are able to become involved in solving problems that they normally would not encounter. Involvement with interactive websites, such as WPBD, assists students in using…

Objective Sleep in Pediatric Anxiety Disorders and Major Depressive Disorder

ERIC Educational Resources Information Center

Forbes, Erika E.; Bertocci, Michele A.; Gregory, Alice M.; Ryan, Neal D.; Axelson, David A.; Birmaher, Boris; Dahl, Ronald E.

2008-01-01

A study to examine sleep problems encountered in anxiety and depressive disorders among children and adolescents is conducted. Results indicated subjective and objective sleep problems in children and adolescents with anxiety disorders and need to be kept in mind when treating young anxious people.

Bereavement Support for Children

ERIC Educational Resources Information Center

Auman, Mary Jo

2007-01-01

The death of a parent is one of the most significant and stressful events children can encounter. Surviving children may experience psychiatric problems and social dysfunction during their childhood and possibly throughout their adult lives. Children surviving a sibling's death may develop behavioral problems, because no one can fill the emptiness…

The Brown University Child and Adolescent Behavior Letter, 1997.

ERIC Educational Resources Information Center

Lipsitt, Lewis P., Ed.

1997-01-01

These 12 monthly issues, one special report, and index from 1997 explore problems encountered by children and adolescents. Regular features include "Keep Your Eye On...," brief accounts of research into childhood and adolescent problems; "What's New in Research," summarizing research from recent publications and professional…

Problemes linguistiques des enfants de travailleurs migrants (Linguistic Problems of the Children of Migrant Workers).

ERIC Educational Resources Information Center

de Greve, Marcel, Ed.; Rosseel, Eddy, Ed.

Papers on language difficulties encountered by migrant workers' children include: "Anomie in Bicultural Education" (Hugo Baetens Beardsmore); "An Investigation into Bilingual Education for Children from Favoured Socio-Economic Backgrounds" (Hugo Baetens Beardsmore); "Orientations of Foreign Children Relating to Placement…

Bronchobiliary fistula: principles of management.

PubMed

Chua, H K; Allen, M S; Deschamps, C; Miller, D L; Pairolero, P C

2000-10-01

Bronchobiliary fistula is an uncommon entity. Recently, we encountered 2 patients with this problem. Both were treated successfully with resection of the involved pulmonary tissue and interposition of viable tissue between the lung and the fistulous tract. This approach, although invasive, provided a rapid resolution of the patients' problem.

Ground-water problems in highway construction and maintenance

USGS Publications Warehouse

Rasmussen, W.C.; Haigler, L.B.

1953-01-01

This report discusses the occurrence of ground water in relation to certain problems in highway construction and maintenance. These problems are: the subdrainage of roads; quicksand; the arrest of soil creep in road cuts; the construction of lower and larger culverts necessitated by the farm-drainage program; the prevention of failure of bridge abutments and retaining walls; and the water-cement ratio of sub-water-table concrete. Although the highway problems and suggested solutions are of general interest, they are considered with special reference to the State of Delaware, in relation to the geology of that State. The new technique of soil stabilization by electroosmosis is reviewed in the hope that it might find application here in road work and pile setting, field application by the Germans and Russians is reviewed.

Vibration characteristics of the HPOTP (High-Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Engine)

NASA Technical Reports Server (NTRS)

Childs, D. W.; Moyer, D. S.

1984-01-01

Attention is given to rotor dynamic problems that have been encountered and eliminated in the course of Space Shuttle Main Engine (SSME) development, as well as continuing, subsynchronous problems which are being encountered in the development of a 109-percent power level engine. The basic model for the SSME's High Pressure Oxygen Turbopump (HPOTP) encompasses a structural dynamic model for the rotor and housing, and component models for the liquid and gas seals, turbine clearance excitation forces, and impeller diffuser forces. Linear model results are used to examine the synchronous response and stability characteristics of the HPOTP, with attention to bearing load and stability problems associated with the second critical speed. Differences between linear and nonlinear model results are discussed and explained in terms of simple models. Simulation results indicate that while synchronous bearing loads can be reduced, subsynchronous motion is not eliminated by seal modifications.

Trapped particle absorption by the Ring of Jupiter

NASA Technical Reports Server (NTRS)

Fillius, W.

1983-01-01

The interaction of trapped radiation with the ring of Jupiter is investigated. Because it is an identical problem, the rings of Saturn and Uranus are also examined. Data from the Pioneer II encounter, deductions for some of the properties of the rings of Jupiter and Saturn. Over a dozen Jupiter magnetic field models are available in a program that integrates the adiabatic invariants to compute B and L. This program is to label our UCSD Pioneer II encounter data with the most satisfactory of these models. The expected effects of absorbing material on the trapped radiation are studied to obtain the loss rate as a function of ring properties. Analysis of the particle diffusion problem rounds out the theoretical end of the ring absorption problem. Other projects include identification of decay products for energetic particle albedo off the rings and moons of Saturn and a search for flux transfer events at the Jovian magnetopause.

Analysis of severe atmospheric disturbances from airline flight records

NASA Technical Reports Server (NTRS)

Wingrove, R. C.; Bach, R. E., Jr.; Schultz, T. A.

1989-01-01

Advanced methods were developed to determine time varying winds and turbulence from digital flight data recorders carried aboard modern airliners. Analysis of several cases involving severe clear air turbulence encounters at cruise altitudes has shown that the aircraft encountered vortex arrays generated by destabilized wind shear layers above mountains or thunderstorms. A model was developed to identify the strength, size, and spacing of vortex arrays. This model is used to study the effects of severe wind hazards on operational safety for different types of aircraft. The study demonstrates that small remotely piloted vehicles and executive aircraft exhibit more violent behavior than do large airliners during encounters with high-altitude vortices. Analysis of digital flight data from the accident at Dallas/Ft. Worth in 1985 indicates that the aircraft encountered a microburst with rapidly changing winds embedded in a strong outflow near the ground. A multiple-vortex-ring model was developed to represent the microburst wind pattern. This model can be used in flight simulators to better understand the control problems in severe microburst encounters.

Between normality and deviance: the breakdown of batterers' identity following police intervention.

PubMed

Buchbinder, Eli; Eisikovits, Zvi

2004-04-01

With the transformation of intimate violence from private trouble to social problem, police intervention in domestic violence cases became more prevalent. Research has focused mainly on battered women's perception of police intervention, their evaluations, and their level of satisfaction with the intervention. However, there is little research examining the perpetrators' subjective perceptions of such interventions. The purpose of this study is to describe and analyze battering men's perceptions of police intervention. The study is based on semistructured, in-depth interviews with 20 batterers who had repeated encounters with police. Findings show a continuum of self-management, ranging from attempts to preserve a normative identity in the first encounter to struggling against criminalization in the second encounter and adopting a victim identity in the third encounter. The findings are discussed in the context of gender identity and power relations.

A bi-objective model for optimizing replacement time of age and block policies with consideration of spare parts’ availability

NASA Astrophysics Data System (ADS)

Alsyouf, Imad

2018-05-01

Reliability and availability of critical systems play an important role in achieving the stated objectives of engineering assets. Preventive replacement time affects the reliability of the components, thus the number of system failures encountered and its downtime expenses. On the other hand, spare parts inventory level is a very critical factor that affects the availability of the system. Usually, the decision maker has many conflicting objectives that should be considered simultaneously for the selection of the optimal maintenance policy. The purpose of this research was to develop a bi-objective model that will be used to determine the preventive replacement time for three maintenance policies (age, block good as new, block bad as old) with consideration of spare parts’ availability. It was suggested to use a weighted comprehensive criterion method with two objectives, i.e. cost and availability. The model was tested with a typical numerical example. The results of the model demonstrated its effectiveness in enabling the decision maker to select the optimal maintenance policy under different scenarios and taking into account preferences with respect to contradicting objectives such as cost and availability.

Beyond reliability to profitability

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bond, T.H.; Mitchell, J.S.

1996-07-01

Reliability concerns have controlled much of power generation design and operations. Emerging from a strictly regulated environment, profitability is becoming a much more important concept for today`s power generation executives. This paper discusses the conceptual advance-view power plant maintenance as a profit center, go beyond reliability, and embrace profitability. Profit Centered Maintenance begins with the premise that financial considerations, namely profitability, drive most aspects of modern process and manufacturing operations. Profit Centered Maintenance is a continuous process of reliability and administrative improvement and optimization. For the power generation executives with troublesome maintenance programs, Profit Centered Maintenance can be the blueprintmore » to increased profitability. It requires the culture change to make decisions based on value, to reengineer the administration of maintenance, and to enable the people performing and administering maintenance to make the most of available maintenance information technology. The key steps are to optimize the physical function of maintenance and to resolve recurring maintenance problems so that the need for maintenance can be reduced. Profit Centered Maintenance is more than just an attitude it is a path to profitability, be it resulting in increased profits or increased market share.« less

Exploring Education. Students from Overseas.

ERIC Educational Resources Information Center

Yates, Alfred, Ed.

Students entering college for the first time are often confronted with adjustment problems that seem to them unsurmountable and impossible. There is the transition from living dependently with parents to semi-independent living on the college campus, in addition to the many problems encountered in academic areas. If a student, accustomed to the…

New Territory: Problems of Adjusting to the First Year of a Social Science PhD.

ERIC Educational Resources Information Center

Hockey, John

1994-01-01

Problems encountered by first-year social science doctoral students in adjusting to their new status as novice researchers are examined, including intellectual solitariness, professional and social isolation, new work organization requirements, anxiety concerning time and productivity, intellectual life, and supervision. Factors contributing to…

Theory Oriented Research: Problems and Challenges.

ERIC Educational Resources Information Center

Greer, John T.

This paper discusses problems the author encountered in attempting to conduct a study of teacher motivation as influenced by a combination of participative decision-making and financial rewards. Over a 3-year period, teacher motivation was to be viewed as influenced by two independent variables--participative decision-making and financial rewards;…

Examples of Cross-Cultural Problems Encountered by Americans Working Overseas; An Instructor's Handbook.

ERIC Educational Resources Information Center

Foster, Robert J.

Intended mainly as a source book for instructors in area training programs, this handbook contains summary accounts of events illustrating problems frequently met by Americans working overseas, especially those providing technical assistance in developing nations. Examples are drawn from case studies, interviews, anthropology texts, and other…

Identifying Fallacies of Reference in Argumentation

ERIC Educational Resources Information Center

Gough, Jim

2009-01-01

The experience of teaching informal logic (sometimes called practical logic) at the introductory level over the last fifteen years has allowed the author the opportunity to identify some interesting problems. These problems have been encountered by students attempting to understand some of the ideas presented in the informal logic course and by…

Efficacy of a Latino Mother-Child Communication Intervention in Elementary Schools

ERIC Educational Resources Information Center

McNaughton, Diane B.; Cowell, Julia Muennich; Fogg, Louis

2015-01-01

Children of Latino immigrants in the United States encounter ecological stressors that heighten their risk for depressive symptoms, externalizing behavior, and problems in school. Studies have shown that affirming parent-child communication is protective of child depressive symptoms and accompanying problems. The purpose of this study was to…

Understanding Critical Thinking to Create Better Doctors

ERIC Educational Resources Information Center

Zayapragassarazan, Zayabalaradjane; Menon, Vikas; Kar, Sitanshu Sekhar; Batmanabane, Gitanjali

2016-01-01

Medical students master an enormous body of knowledge, but lack systematic problem solving ability and effective clinical decision making. High profile reports have called for reforms in medical education to create a better generation of doctors who can cope with the system based problems they would encounter in an interdisciplinary and…

Anatomy of a bearing torque problem

NASA Technical Reports Server (NTRS)

Phinney, Damon D.

1987-01-01

In the early 1970s, an antenna despin drive was developed for MBB solar science satellite HELIOS. A problem with high bearing drag torque that was encountered on the two flight models of this drive, after successful tests were completed on twelve bearings, an engineering model, and the qualification unit is discussed.

SOME PROBLEMS IN THE CONSTRUCTION OF AN ELECTRON LINEAR ACCELERATOR (in Dutch)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Verhaeghe, J.; Vanhuyse, V.; Van Leuven, P.

1959-01-01

Special problems encountered in the construction of the electron linear accelerator of the Natuurkundig Laboratorium der Rijksuniversiteit of Ghent are discussed. The subjects considered are magnetic focusing, magnetic screening of the electron gun cathode, abnormal attenuation-multipactor effects, and electron energy control. (J.S.R.)

Difficulties for University Students with Mental Health Problems: A Critical Interpretive Synthesis

ERIC Educational Resources Information Center

Markoulakis, Roula; Kirsh, Bonnie

2013-01-01

Postsecondary institutions are witnessing an increase in the number and severity of student mental health problems, necessitating an understanding of the difficulties these students encounter in striving for higher education. The authors conducted a critical interpretive synthesis of 10 articles pertaining to difficulties experienced by students…

English Preservice Teaching: Problems and Suggested Solutions

ERIC Educational Resources Information Center

Naeem, Marwa Ahmed Refat

2014-01-01

The present study investigated the problems faced by Egyptian EFL prospective teachers during their first encounter with preservice teaching. The sample for the study included 135 prospective EFL teachers trained in five preparatory (middle) schools in Kafr El-Sheikh city, Egypt. At the end of their first year training course, the prospective…

Education's Role in National Development Plans: Ten Country Cases.

ERIC Educational Resources Information Center

Thomas, R. Murray, Ed.

The place education has been assigned in the national development programs of 10 nations is discussed, the problems that these countries have encountered in managing education are examined, and the measures adopted to solve educational problems are assessed. Included are the following papers: (1) "The Nature of National Development…

Human Gene Discovery Laboratory: A Problem-Based Learning Experience

ERIC Educational Resources Information Center

Bonds, Wesley D., Sr.; Paolella, Mary Jane

2006-01-01

A single-semester elective combines Mendelian and molecular genetics in a problem-solving format. Students encounter a genetic disease scenario, construct a family pedigree, and try to confirm their medical diagnoses through laboratory experiences. Encouraged to generate ideas as they test their hypotheses, students realize the importance of data…

Turkish EFL Pre-Service Teachers' Pronunciation Problems

ERIC Educational Resources Information Center

Bardakçi, Mehmet

2015-01-01

This classroom research deals with pronunciation problems that Turkish EFL teacher candidates would encounter. The participants were 22 EFL pre-service teachers with B2 level of proficiency in English. The presentations which were carried out by these participants were analyzed both by the participants themselves and the researcher. The results…

Knowledge Inertia and Organizational Learning as the Explanation of Organizational Performance

ERIC Educational Resources Information Center

Aküzüm, Cemal

2014-01-01

Knowledge is an important concept for individuals and organizations both as a power and source. Thus, knowledge management has become important subject for researchers. However, when people encounter problems, they usually try to produce solutions by utilizing their previous knowledge and experience. Such problem solving strategies are called…

Establishing a Child Care Substitute Caregiver System.

ERIC Educational Resources Information Center

Love, Lynne

Substitute caregivers are needed by day care centers in every state. Indeed, some areas are experiencing severe shortages of applicants for child care positions and short-term substitute work. This article describes problems encountered in current substitute caregiver systems and suggests ways of dealing with such problems. Specifically discussed…

Introspection in Problem Solving

ERIC Educational Resources Information Center

Jäkel, Frank; Schreiber, Cornell

2013-01-01

Problem solving research has encountered an impasse. Since the seminal work of Newell und Simon (1972) researchers do not seem to have made much theoretical progress (Batchelder and Alexander, 2012; Ohlsson, 2012). In this paper we argue that one factor that is holding back the field is the widespread rejection of introspection among cognitive…

Maintaining "Professional Distance": A Dilemma for the ABE Teacher.

ERIC Educational Resources Information Center

Willing, Delight C.; Haney, Hutch

1994-01-01

Too often, many adult educators are unaware of the problems resulting from failing to maintain an appropriate "professional distance" from their adult basic education (ABE) or English-as-a-Second-Language (ESL) students when those students encounter personal problems or crises that appear to be interfering with their learning. ABE…

Student Problems. Adult Literacy Independent Learning Packet.

ERIC Educational Resources Information Center

Koefer, Ann M.

This independent learning packet, which is designed for administrators, teachers, counselors, and tutors in Pennsylvania's Region 7 Tri-Valley Literacy Staff Development area as well as for their adult students, examines the following seven problems encountered by students: the job market, child care, single parenting/parenting skills, divorce,…

Impact Assessment of Problem-Based Learning in an Engineering Science Course

ERIC Educational Resources Information Center

Nasr, Karim J.; Ramadan, Bassem H.

2008-01-01

This paper presents the development and implementation of Problem-Based Learning (PBL) in an engineering thermodynamics course at Kettering University. In this project, the thermodynamics course was restructured as modules presenting practical applications first, whereas principles were introduced just-in-time and as encountered. Theoretical…

Problems Relating to Examinations in Three-Year Technical/Natural Science Courses of Study at the Federal Armed Forces University, Munich.

ERIC Educational Resources Information Center

Ulbricht, Kurt; Zimmermann, Peter

1981-01-01

Problems encountered in testing in aerospace engineering courses in an accelerated technical program of a German military university are outlined. Four common grading procedures are compared, and the optimum length of written tests is discussed. (MSE)

Alleviating Comprehension Problems in Movies. Working Paper.

ERIC Educational Resources Information Center

Tatsuki, Donna

This paper describes the various barriers to comprehension that learners may encounter when viewing feature films in a second language. Two clusters of interfacing factors that may contribute to comprehension hot spots emerged from a quantitative analysis of problems noted in student logbooks. One cluster had a strong acoustic basis, whereas the…

The Brown University Child and Adolescent Behavior Letter, 1996.

ERIC Educational Resources Information Center

Lipsitt, Lewis P., Ed.

1996-01-01

These 12 monthly newsletters from 1996 explore the many problems encountered by children and adolescents as they grow up. Regular departments in the newsletter issues include "Keep Your Eye On...," which briefly presents results of research into childhood and adolescent problems; "What's New in Research," summarizing research…

The Brown University Child and Adolescent Behavior Letter, 1995.

ERIC Educational Resources Information Center

Lipsitt, Lewis P., Ed.

1995-01-01

These 12 monthly newsletters from 1995 explore the myriad problems encountered by children and adolescents as they grow up. Regular departments in the newsletter issues include "Keep Your Eye On...," which briefly presents results of research into childhood and adolescent problems; "New Research," summarizing research from recent publications and…

7 CFR 4280.149 - Requirements after project construction.

Code of Federal Regulations, 2010 CFR

2010-01-01

... sanitation problem has been solved. (3) The annual income and/or energy savings of the renewable energy... maintenance or operational problems associated with the facility. (6) Recommendations for development of...

Atmospheric Propagation and Combining of High-Power Lasers

DTIC Science & Technology

2015-09-08

Brightness-scaling potential of actively phase- locked solid state laser arrays,” IEEE J. Sel. Topics Quantum Electron., vol. 13, no. 3, pp. 460–472, May...attempting to phase- lock high-power lasers, which is not encountered when phase- locking low-power lasers, for example mW power levels. Regardless, we...technology does not currently exist. This presents a challenging problem when attempting to phase- lock high-power lasers, which is not encountered when

Unmanned Aerial Vehicle Operational Test and Evaluation Lessons Learned

DTIC Science & Technology

2003-12-01

prevented during the test design phase. Test designers should ensure that the appropriate data can be collected in sample sizes large enough to support...encountered during previous tests in an attempt to prevent them from occurring in future tests. The focus of this paper is on UAVs acquired to perform...CHAPTER III TEST DESIGN III. TEST DESIGN Many of the problems encountered during UAV OT could have been prevented during the test

Time and truth in plans

NASA Technical Reports Server (NTRS)

Hazelton, Lyman R., Jr.

1990-01-01

Some of the logical components of a rule based planning and scheduling system are described. The researcher points out a deficiency in the conventional truth maintenance approach to this class of problems and suggests a new mechanism which overcomes the problem. This extension of the idea of justification truth maintenance may seem at first to be a small philosophical step. However, it embodies a process of basic human reasoning which is so common and automatic as to escape conscious detection without careful introspection. It is vital to any successful implementation of a rule based planning reasoner.

Economical Development of Complex Computer Systems

DTIC Science & Technology

1992-08-15

margins typically encountered in the ........ beginning of a product’s life cycle, and shorten the payback period.4 leS D ~~~~LC~~~ Jr4.tt L~s.c...recurring, and other related costsincurred, or estimated to be incurr in the design, research and development (R& D ), investment, operation, maintenance...on the basis of cost. D E C R ’Item I E Incorporatento A-ml S .... .. EF D Y ..... S F R Technology& : Recnser 0 N P T Item N A -- Y E -- B N ’’A D

Interventions for Weight Reduction: Facing the Maintenance Problem

ERIC Educational Resources Information Center

Anderson, Drew A.; Simmons, Angela M.; Milnes, Suzanne M.

2005-01-01

Behavioral treatments are perhaps the cornerstone of modern obesity treatment. Maintenance of weight lost via behavioral treatments has been less than hoped for, however. Weight regain is the result of complex interactions between physiological, behavioral, cognitive, and environmental factors; in this paper we review some of these factors and…

Facility Management Child Care Resource Book. Child Care Operations Center of Expertise.

ERIC Educational Resources Information Center

General Services Administration, Washington, DC. Public Buildings Service.

This guidebook provides maintenance and operations guidelines for managing General Services Administration (GSA) child care centers within the same standards and level of a GSA operated facility. Areas covered address cleaning standards and guidelines; equipment funding and inventory; maintenance of living environments and problem areas;…

Economic Evaluation of Building Design, Construction, Operation and Maintenance. Seminar Workbook.

ERIC Educational Resources Information Center

Ruegg, Rosalie T.

This workbook has been prepared for participants in the seminar, "Economic Evaluation of Building Design, Construction, Operation and Maintenance." It has two main functions: (1) to provide basic resource materials, references, and introductions to methods employed in the seminar; and (2) to provide instructional problems for solution by…

30 CFR 250.516 - Blowout preventer system tests, inspections, and maintenance.

Code of Federal Regulations, 2010 CFR

2010-07-01

... Well-Completion Operations § 250.516 Blowout preventer system tests, inspections, and maintenance. (a...) Test affected BOP components following the disconnection or repair of any well-pressure containment... you have well-control problems. You must conduct the required BOP test as soon as possible (i.e...

Group structure and group process for effective space station astronaut teams

NASA Technical Reports Server (NTRS)

Nicholas, J. M.; Kagan, R. S.

1985-01-01

Space Station crews will encounter new problems, many derived from the social interaction of groups working in space for extended durations. Solutions to these problems must focus on the structure of groups and the interaction of individuals. A model of intervention is proposed to address problems of interpersonal relationships and emotional stress, and improve the morale, cohesiveness, and productivity of astronaut teams.

A review of the Los Alamos effort in the development of nuclear rocket propulsion

DOE Office of Scientific and Technical Information (OSTI.GOV)

Durham, F.P.; Kirk, W.L.; Bohl, R.J.

1991-01-01

This paper reviews the achievements of the Los Alamos nuclear rocket propulsion program and describes some specific reactor design and testing problems encountered during the development program along with the progress made in solving these problems. The relevance of these problems to a renewed nuclear thermal rocket development program for the Space Exploration Initiative (SEI) is discussed. 11 figs.

Cryogenics maintenance strategy

NASA Astrophysics Data System (ADS)

Cruzat, Fabiola

2012-09-01

ALMA is an interferometer composed of 66 independent systems, with specific maintenance requirements for each subsystem. To optimize the observation time and reduce downtime maintenance, requirements are very demanding. One subsystem with high maintenance efforts is cryogenics and vacuum. To organize the maintenance, the Cryogenic and Vacuum department is using and implementing different tools. These are monitoring and problem reporting systems and CMMS. This leads to different maintenance approaches: Preventive Maintenance, Corrective Maintenance and Condition Based Maintenance. In order to coordinate activities with other departments the preventive maintenance schedule is kept as flexible as systems allow. To cope with unavoidable failures, the team has to be prepared to work under any condition with the spares on time. Computerized maintenance management system (CMMS) will help to manage inventory control for reliable spare part handling, the correct record of work orders and traceability of maintenance activities. For an optimized approach the department is currently evaluating where preventive or condition based maintenance applies to comply with the individual system demand. Considering the change from maintenance contracts to in-house maintenance will help to minimize costs and increase availability of parts. Due to increased number of system and tasks the cryo team needs to grow. Training of all staff members is mandatory, in depth knowledge must be built up by doing complex maintenance activities in the Cryo group, use of advanced computerized metrology systems.

Shuttle payload S-band communications system

NASA Technical Reports Server (NTRS)

Batson, B. H.; Teasdale, W. E.; Pawlowski, J. F.; Schmidt, O. L.

1985-01-01

The Shuttle payload S-band communications system design, operational capabilities, and performance are described in detail. System design requirements, overall system and configuration and operation, and laboratory/flight test results are presented. Payload communications requirements development is discussed in terms of evolvement of requirements as well as the resulting technical challenges encountered in meeting the initial requirements. Initial design approaches are described along with cost-saving initiatives that subsequently had to be made. The resulting system implementation that was finally adopted is presented along with a functional description of the system operation. A description of system test results, problems encountered, how the problems were solved, and the system flight experience to date is presented. Finally, a summary of the advancements made and the lessons learned is discussed.

Mental hospital depopulation in Canada: patient perspectives.

PubMed

Herman, N J; Smith, C M

1989-06-01

This paper reviews briefly the history of mental health depopulation in Canada over the past 30 years. The term "deinstitutionalization" is often used but is unsatisfactory. Using an exploratory, qualitative, methodological approach, data were collected on the problems encountered by a disproportionate, stratified random sample of 139 formerly institutionalized patients living in various geographical locales in Eastern Canada. Adopting a symbolic interactionist theoretical approach, this study, in an effort to fill a neglect in the literature, attempted to discover what the everyday world(s) of Canadian ex-mental patients was really like. Problems encountered related to stigma, poor housing, lack of back living skills, poverty, unemployment and aftercare. Quotations from patients are provided to illustrate such themes. The findings are discussed.

[Problems encountered during the installation of an automated anesthesia documentation system (AIMS)].

PubMed

Müller, H; Naujoks, F; Dietz, S

2002-08-01

Problems encountered during the installation and introduction of an automated anaesthesia documentation system are discussed. Difficulties have to be expected in the area of staff training because of heterogeneous experience in computer usage and in the field of online documentation of vital signs. Moreover the areas of net administration and hardware configuration as well as general administrative issues also represent possible sources of drawbacks. System administration and reliable support provided by personnel of the department of anaesthesiology assuring staff motivation and reducing time of system failures require adequately staffed departments. Based on our own experiences, we recommend that anaesthesiology departments considering the future installation and use of an automated anaesthesia documentation system should verify sufficient personnel capacities prior to their decision.

Do general practice patients with and without appointment differ? Cross-sectional study.

PubMed

Riedl, Bernhard; Kehrer, Simon; Werner, Christoph U; Schneider, Antonius; Linde, Klaus

2018-06-23

Even in practices with a comprehensive appointment system a minority of patients walks in without prior notice, sometimes causing problems for practice service quality. We aimed to explore differences between patients consulting primary care practices with and without appointment. Consecutive patients visiting five primary care practices without an appointment and following patients with an appointment were asked to fill in a four-page questionnaire addressing socio-demographic characteristics, the reason for encounter, urgency of seeing a physician, depressive, somatic and anxiety symptoms, personality traits, and satisfaction with the practice. Physicians also documented the reason for encounter and assessed the urgency. Data were analyzed using univariate and multivariate methods. Two hundred fifty-one patients without and 250 patients with appointment participated. Patients without appointment were significantly younger (mean age 44 vs. 50 years) and reported less often chronic diseases (29% vs. 45%). Also, reasons for encounter differed (e.g., 27% vs. 16% with a respiratory problem). Patients' ratings of urgency did not differ between groups (p = 0.46), but physicians rated urgency higher among patients without appointment (p < 0.001). In logistic regression analyses younger age, male gender, absence of chronic disease, positive screening for at least one mental disorder, low values on the personality trait openness for experience, a high urgency rating by the physician, and a respiratory or musculoskeletal problem as reason for encounter were significantly associated with a higher likelihood of being a patient without appointment. In this study, younger age and a high urgency rating by physicians were the variables most consistently associated with the likelihood of being a patient without appointment. Overall, differences between patients seeking general practices with a comprehensive appointment system without prior notice and patients with appointments were relatively minor.

[Evaluation of the standard application of Delphi in the diagnosis of chronic obstructive pulmonary disease caused by occupational irritant chemicals].

PubMed

Zhao, L; Yan, Y J

2017-11-20

Objective: To investigate the problems encountered in the application of the standard (hereinafter referred to as standard) for the diagnosis of chronic obstructive pulmonary disease caused by occu-pational irritant chemicals, to provide reference for the revision of the new standard, to reduce the number of missed patients in occupational COPD, and to get rid of the working environment of those who suffer from chronic respiratory diseases due to long-term exposure to poisons., slowing the progression of the disease. Methods: Using Delphi (Delphi) Expert research method, after the senior experts to demonstrate, to under-stand the GBZ 237-2011 "occupational irritant chemicals to the diagnosis of chronic obstructive pulmonary dis-ease" standard evaluation of the system encountered problems, to seek expert advice, The problems encoun-tered during the clinical implementation of the standards promulgated in 2011 are presented. Results: Through the Delphi Expert investigation method, it is found that experts agree on the content evaluation and implemen-tation evaluation in the standard, but the operational evaluation of the standard is disputed. According to the clinical experience, the experts believe that the range of occupational irritant gases should be expanded, and the operation of the problem of smoking, seniority determination and occupational contact history should be challenged during the diagnosis. Conclusions: Since the promulgation in 2011 of the criteria for the diagnosis of chronic obstructive pulmonary disease caused by occupational stimulant chemicals, there have been some problems in the implementation process, which have caused many occupationally exposed to irritating gases to suffer from "occupational chronic respiratory Diseases" without a definitive diagnosis.

Theory-of-mind-related neural activity for one’s romantic partner predicts partner well-being

PubMed Central

Felix, Steven; Yung, Matthew G.; Hooker, Christine I.

2016-01-01

Healthy social relationships are linked to myriad positive physical and mental health outcomes, raising the question of how to enhance relationship formation and quality. Behavioral data suggest that theory of mind (ToM) may be one such process. ToM is supported by a network of brain regions including the temporo-parietal junction (TPJ), medial prefrontal cortex and precuneus (PC). However, little research has investigated how the ToM network supports healthy social relationships. Here, we investigate whether recruitment of the ToM network when thinking about the mental states of one’s romantic partner predicts the partner’s well-being. We find that selectivity in left TPJ (LTPJ) and PC for beliefs vs physical attributes of one’s partner is positively associated with partner well-being the day of and day after a meaningful encounter. Furthermore, LTPJ and PC selectivity moderated how the partner’s perception of being understood during the encounter affected their later well-being. Finally, we find the association between ToM-related neural selectivity and well-being robust to other factors related to the relationship and the encounter. Together, these data suggest that selective engagement of the neural network supporting ToM may be a key ingredient for the development and maintenance of healthy romantic relationships. PMID:26609107

Effects of early nightmares on the development of sleep disturbances in motor vehicle accident victims.

PubMed

Kobayashi, Ihori; Sledjeski, Eve M; Spoonster, Eileen; Fallon, William F; Delahanty, Douglas L

2008-12-01

The present study prospectively examined the extent to which trauma-related nightmares affected the subsequent development of insomnia symptoms in 314 motor vehicle accident (MVA) victims. Participants were assessed in-hospital and at 2 weeks, 6 weeks, 3 months, and 1 year post-MVA. Hierarchical linear regression analyses showed that 6-week PTSD symptoms (PTSS) and 3-month nightmares, but not 2-week nightmares were positively associated with sleep onset and maintenance problems reported at 3-month post-MVA. Nightmares reported at 3-months post-MVA were positively associated with 1-year sleep maintenance problems. These findings highlight the dynamic relationship between PTSS and sleep problems as well as the potential importance of early intervention for trauma-related nightmares as a means to prevent sleep problems after a traumatic experience.

A critical theory of medical discourse: how patients and health professionals deal with social problems.

PubMed

Waitzkin, H; Britt, T

1989-01-01

Criticism of social context does not generally appear in medical encounters. When contextual issues arise in medical discourse, messages of ideology and social control may become apparent, usually without the conscious awareness of the participants. By easing the physical or psychological impact of contextual difficulties, or by encouraging patients' conformity to mainstream expectations of desirable behavior, encounters with doctors can help win patients' consent to troubling social conditions. Seen in this light, doctor-patient encounters become micropolitical situations that do not typically encourage explicit statements or actions by health professionals to change contextual sources of their patients' difficulties. A critical theory influenced by structuralism suggests that the surface meanings of signs in medical discourse prove less important than their structural relationships. In addition, a theoretical approach adopting elements of post-structuralism and Marxist literary criticism emphasizes the marginal, absent, or excluded elements of medical discourse. Contextual features that shape a text include social class, sex, age, and race. Through the underlying structure of medical discourse, contextual problems are expressed, marginalized, and managed.

Assessing trail conditions in protected areas: Application of a problem-assessment method in Great Smoky Mountains National Park, USA

USGS Publications Warehouse

Leung, Y.-F.; Marion, J.

1999-01-01

The degradation of trail resources associated with expanding recreation and tourism visitation is a growing management problem in protected areas worldwide. In order to make judicious trail and visitor management decisions, protected area managers need objective and timely information on trail resource conditions. This paper introduces a trail survey method that efficiently characterizes the lineal extent of common trail problems. The method was applied to a large sample of trails within Great Smoky Mountains National Park, a highuse protected area in the USA. The Trail ProblemAssessment Method (TPAM) employs a continuous search for multiple indicators of predefined tread problems, yielding census data documenting the location, occurrence and extent of each problem. The present application employed 23 different indicators in three categories to gather inventory, resource condition, and design and maintenance data of each surveyed trail. Seventy-two backcountry hiking trails (528 km), or 35% of the Park's total trail length, were surveyed. Soil erosion and wet soil were found to be the two most common impacts on a lineal extent basis. Trails with serious tread problems were well distributed throughout the Park, although wet muddy treads tended to be concentrated in areas where horse use was high. The effectiveness of maintenance features installed to divert water from trail treads was also evaluated. Water bars were found to be more effective than drainage dips. The TPAM was able to provide Park managers with objective and quantitative information for use in trail planning, management and maintenance decisions, and is applicable to other protected areas elsewhere with different environmental and impact characteristics.

Maintenance Policy in Public-Transport Involving Government Subsidy

NASA Astrophysics Data System (ADS)

Pasaribu, U. S.; Bayuzetra, Y.; Gunawan, L. E.; Husniah, H.

2018-02-01

A public transport with government subsidy is considered to encourage the sustainability of the transportation. The transportations revenue is determined by the maximum of the uptimes of the vehicle. In this paper, we study a one-dimensional maintenance policy for new vehicle which is characterized by age parameter. We consider that the degradation of the vehicle is affected by the age of the vehicle, and modelled by using a one-dimensional approach. The owner performs both preventive and corrective maintenance actions, and the preventive maintenance action will reduce the vehicle failure rate and hence it will decrease the corrective maintenance cost during the life time of the vehicle. The decision problem for the owner is to find the optimal preventive maintenance time of the vehicle of each subsidy option offered by maximizing the expected profit for each subsidy.

Remote Education Using Web Conference System in a Company of Coin Parking Business

NASA Astrophysics Data System (ADS)

Yoshioka, Yoshio; Mito, Hiroyuki; Azuma, Kouji

Maintenance jobs at coin parking places (CP) are very important for keeping trouble free operation. Such maintenance jobs include special inspection at the initiation of new CP and ordinal maintenance works. In order to level up the skill of maintenance people in the company, education of the basic knowlege of electricity, facility and maintenance skills are required. We made an original text for maintenance people, and practiced education by use of web conference system, because they are distributed in whole country, This paper describes a content of text on fundamental knowledge of electricity, facility of coin parking system and trouble experiences, and also a practice of remote education using web conference system. Problems of remote education which were found by practice and the future education plan of practical skill are also described.

Households encountering with catastrophic health expenditures in Ferdows, Iran.

PubMed

Ghoddoosinejad, Javad; Jannati, Ali; Gholipour, Kamal; Baghban Baghestan, Elham

2014-08-01

Out-of-pocket payments are the main sources of healthcare financing in most developing countries. Healthcare services can impose a massive cost burden on households, especially in developing countries. The purpose of this study was to calculate households encountered with catastrophic healthcare expenditures in Ferdows, Iran. The sample included 100 households representing 20% of all households in Ferdows, Iran. The data were collected using self-administered questionnaire. The ability to pay of households was calculated, and then if costs of household health were at least 40% of their ability to pay, it was considered as catastrophic expenditures. Rate of households encountered to catastrophic health expenditures was estimated to be 24%, of which dentistry services had the highest part in catastrophic health expenditures. Low ability to pay of households should be supported against these expenditures. More equitable health system would solve the problem, although more financial aid should be provided for households encountered to catastrophic costs.

Evaluation and Repair of Concrete Structures: Annotated Bibliography 1978 - 1988. Volume 1. (Repair, Evaluation, Maintenance and Rehabilitation Research Program)

DTIC Science & Technology

1991-06-01

32303, "Application of New Technology to Maintenance and Minor Repair," for which Mr. James E. McDonald (CEWES-SC-R) was Principal Investigator. Dr. Tony...materials, shotcrete, and silica-fume concrete. 6. Section -D contains 710 references-on maintenance and repair tech- niques including bonding new concrote to...sys- -tem. The process problems have been resolved-by introduction of new instrumentation, static mixers, elimination of washers and high density

The Application of FAHP in Decisions of Pavement Maintenance

NASA Astrophysics Data System (ADS)

Wu, Zhaorong

2017-04-01

In this paper, a method of building the fuzzy complementary judgement matrix and checking consistency is introduced based on the knowledge of the basic theory of FAHP and the procedure to establish the mathematical model corresponded. The scope and the advantages in the problems of multi-objective decisions have also been discussed. The availability of its use in the management system in pavement maintenance is demonstrated by analyzing the optimization for maintenance. Meanwhile, the faulty is also pointed out.

[Web-based support system for medical device maintenance].

PubMed

Zhao, Jinhai; Hou, Wensheng; Chen, Haiyan; Tang, Wei; Wang, Yihui

2015-01-01

A Web-based technology system was put forward aiming at the actual problems of the long maintenance cycle and the difficulties of the maintenance and repairing of medical equipments. Based on analysis of platform system structure and function, using the key technologies such as search engine, BBS, knowledge base and etc, a platform for medical equipment service technician to use by online or offline was designed. The platform provides users with knowledge services and interactive services, enabling users to get a more ideal solution.

Simulators for Maintenance Training: Some Issues, Problems and Areas for Future Research

DTIC Science & Technology

1978-07-01

trainer into a full-scale, three-dimensional simulation of one cabinet of the NIKE HIPAR system. Test points for troubleshooting were located on simulated...described was used to teach maintenance of the NIKE HIPAR system. It too was considered to be a general purpose trainer in that its basic features could be...types of maintenance simulators based on a detailed task analysis of the NIKE HIPAR system as it existed one year before it was scheduled to become

Initial flight qualification and operational maintenance of X-29A flight software

NASA Technical Reports Server (NTRS)

Earls, Michael R.; Sitz, Joel R.

1989-01-01

A discussion is presented of some significant aspects of the initial flight qualification and operational maintenance of the flight control system softward for the X-29A technology demonstrator. Flight qualification and maintenance of complex, embedded flight control system software poses unique problems. The X-29A technology demonstrator aircraft has a digital flight control system which incorporates functions generally considered too complex for analog systems. Organizational responsibilities, software assurance issues, tools, and facilities are discussed.

Pediatrics

NASA Technical Reports Server (NTRS)

Spackman, T. J.

1978-01-01

The utilization of the Lixiscope in pediatrics was investigated. The types of images that can presently be obtained are discussed along with the problems encountered. Speculative applications for the Lixiscope are also presented.

Client Contacts Improve Quality of Copywriting.

ERIC Educational Resources Information Center

McCann, Guy

1988-01-01

Discusses the advantages of using real-life clients for class assignments in copywriting courses. Presents suggestions for client sources and identifies possible problems which may be encountered. (MM)

A Brief Comparison of the Current Approaches in Teaching Pronunciation

ERIC Educational Resources Information Center

Aydin, Selami; Akyüz, Serhat

2017-01-01

Though pronunciation has an important place in English as a foreign language (EFL) teaching and learning, it is evident that EFL teachers experience some problems in pronunciation classes. Thus, this study aims to review some studies on teaching pronunciation to present essential information and solutions to the problems encountered in…

The Academy in the Age of Digital Labor

ERIC Educational Resources Information Center

Glaros, Michelle

2004-01-01

In this article, the author addresses a problem encountered in her own professional life as a teacher of writing in the context of computing, a teaching field often referred to as "computers and writing," "electronic writing," or "computer-assisted writing instruction." The problem she has observed has to do with teaching technology in a…

Learners' Perceptions of Listening Comprehension Problems.

ERIC Educational Resources Information Center

Hasan, Ali S.

2000-01-01

Reports a study of listening problems encountered in the English-as-a-foreign-language classroom in the English for Specific Purposes Centre at Damascus University in Syria. Looks particularly at learner strategies, features of the listening text, characteristics of the speaker, attitudes of the listener, the task to be completed as a result of…

Signal-Detection Analyses of Conditional Discrimination and Delayed Matching-to-Sample Performance

ERIC Educational Resources Information Center

Alsop, Brent

2004-01-01

Quantitative analyses of stimulus control and reinforcer control in conditional discriminations and delayed matching-to-sample procedures often encounter a problem; it is not clear how to analyze data when subjects have not made errors. The present article examines two common methods for overcoming this problem. Monte Carlo simulations of…

Overcoming Barriers for Displaced Homemakers in Nontraditional Occupations. A Manual of Strategies.

ERIC Educational Resources Information Center

Far West Lab. for Educational Research and Development, San Francisco, CA.

This manual examines problems the displaced homemaker encounters on the job and offers strategies which vocational educators, counselors, and other service providers can suggest to nontraditional students for overcoming these problems. A brief overview of the displaced homemaker is provided and the term "nontraditional occupation" is defined. An…

The English Translation and Testing of the Problems after Discharge Questionnaire

ERIC Educational Resources Information Center

Holland, Diane E.; Mistiaen, Patriek; Knafl, George J.; Bowles, Kathryn H.

2011-01-01

The quality of hospital discharge planning assessments determines whether patients receive the health and social services they need or are sent home with unmet needs and without services. There is a valid and reliable Dutch instrument that measures problems and unmet needs patients encounter after discharge. This article describes the translation…

Listening: The Ignored Skill in EFL Context

ERIC Educational Resources Information Center

Ulum, Ömer Gökhan

2015-01-01

Listening is clearly the weakest skill of EFL students who encounter different kinds of listening problems. It is the most underestimated skill in EFL context, though. This study seeks to examine the listening problems faced by a group of first year university students whose English proficiency level is elementary. 50 EFL students from three…

Foundation Officers, Evaluation, and Ethical Problems: A Pilot Investigation

ERIC Educational Resources Information Center

Morris, Michael

2007-01-01

Ethical problems encountered by foundation officers in their evaluation-related work were identified via an email survey of a sample of Council on Foundations member organizations. Of the respondents who had worked with evaluators, one-third indicated that they had faced ethical challenges. Most challenges fell into one of four categories:…

Obstacles in Qualitative Research: Possible Solutions

ERIC Educational Resources Information Center

Poggenpoel, M.; Myburgh, C. P. H.

2005-01-01

In conducting research, the identified problem in the field will determine the research strategies chosen to address the problem. When a qualitative research strategy is deemed as the most appropriate strategy to get answers to research questions, the researcher should be aware of obstacles that can be encountered in the research process. If the…

The Chronically Ill Child in the School.

ERIC Educational Resources Information Center

Sexson, Sandra; Madan-Swain, Avi

1995-01-01

Examines the effects of chronic illness on the school-age population. Facilitating successful functioning of chronically ill youths is a growing problem. Focuses on problems encountered by the chronically ill student who has either been diagnosed with a chronic illness or who has survived such an illness. Discusses the role of the school…

Operant Strategies in the Training of Community Action Organizers.

ERIC Educational Resources Information Center

Vargas, Ernest A.; Breslaw, Jerome

Planning, funding and operating anti-poverty programs require skilled community organizers. Training organizers deals with problems of how to motivate others and what tactics should be used when difficulty is encountered. Two approaches to these problems determined by images of 20th Century Man have been employed: (1) rational economic man who…

Teaching Consumer Skills and How to Survive in America.

ERIC Educational Resources Information Center

Webb, Farren

These consumer education activities will help secondary students become aware of the social and economic problems they will be encountering after they graduate. Interdisciplinary in nature, the activities can be used in a number of ways. They can be integrated into the curriculum through U.S. history, modern problems, sociology, psychology, home…

A Genetic Algorithm Approach to Nonlinear Least Squares Estimation

ERIC Educational Resources Information Center

Olinsky, Alan D.; Quinn, John T.; Mangiameli, Paul M.; Chen, Shaw K.

2004-01-01

A common type of problem encountered in mathematics is optimizing nonlinear functions. Many popular algorithms that are currently available for finding nonlinear least squares estimators, a special class of nonlinear problems, are sometimes inadequate. They might not converge to an optimal value, or if they do, it could be to a local rather than…

Persistent Problems and Promising Solutions in Inservice Education. Report of Selected REGI Project Directors.

ERIC Educational Resources Information Center

Grigsby, Greg

This report summarizes and presents information from interviews with 22 National Inservice Network project directors. The purpose was to identify problems and solutions encountered in directing regular education inservice (REGI) projects. The projects were sponsored by institutions of higher education, state and local education agencies, and an…

Geometric Reasoning in an Active-Engagement Upper-Division E&M Classroom

ERIC Educational Resources Information Center

Cerny, Leonard Thomas

2012-01-01

A combination of theoretical perspectives is used to create a rich description of student reasoning when facing a highly-geometric electricity and magnetism problem in an upper-division active-engagement physics classroom at Oregon State University. Geometric reasoning as students encounter problem situations ranging from familiar to novel is…

Elites, Bureaucrats, Ostriches, and Pussycats: Managing Research in Policy Settings.

ERIC Educational Resources Information Center

Marshall, Catherine

Female researchers conducting field research in educational politics encounter special problems of access, entry, reciprocity, and ethics. Accordingly, this study focuses first on field research methods in policy settings as a general topic, then on problems specific to women in this area. A researcher must be aware of informal coalitions or…

Meanings Given to Algebraic Symbolism in Problem-Posing

ERIC Educational Resources Information Center

Cañadas, María C.; Molina, Marta; del Río, Aurora

2018-01-01

Some errors in the learning of algebra suggest that students might have difficulties giving meaning to algebraic symbolism. In this paper, we use problem posing to analyze the students' capacity to assign meaning to algebraic symbolism and the difficulties that students encounter in this process, depending on the characteristics of the algebraic…

A study of effects of hyperthermia on large, short-haired male dogs : a simulated air transport environmental stress.

DOT National Transportation Integrated Search

1977-03-01

When dogs are shipped by air transport, they can encounter environmental temperatures as high as 130.0 F during the summer months. Heat- induced hyperthermia can be a major problem in dogs. : To assess some aspects of the heat stress problem, 20 dogs...

Social Relationships and Interpersonal Skills: A Guide for People with Sensory and Physical Limitations.

ERIC Educational Resources Information Center

Institute for Information Studies, Falls Church, VA.

Intended for individuals with physical or sensory handicaps, the guide explores the social and interpersonal implication of disability and suggests alternative ways of dealing with related problems. Chapter 1 looks at the social environment that people with disabilities encounter. Potential social problems and types of situations the disabled may…

Seeing Deep Structure from the Interactions of Surface Features

ERIC Educational Resources Information Center

Chi, Michelene T. H.; VanLehn, Kurt A.

2012-01-01

Transfer is typically thought of as requiring individuals to "see" what is the same in the deep structure between a new target problem and a previously encountered source problem, even though the surface features may be dissimilar. We propose that experts can "see" the deep structure by considering the first-order interactions…

Engineering Encounters: The Tightrope Challenge

ERIC Educational Resources Information Center

Burton, Bill

2014-01-01

In order to prepare students to become the next innovators, teachers need to provide real-world challenges that allow children to exercise their innovation muscles. Innovation starts with a problem and innovators work to solve a problem by planning, creating, and testing. The real-world innovation process does not happen on a worksheet, and it…

A Pilot Study of Problems and Practices in the Induction of Beginning Teachers.

ERIC Educational Resources Information Center

Bouchard, John B.; Hull, Ronald E.

A pilot study was designed to test the practicality of gathering data through interviews and to provide tentative information on induction problems and practices encountered by beginning teachers in the Cattaraugus-Chautauqua County area of New York. Fifty-three elementary self-contained classroom teachers and secondary academic subject-matter…

Using Real World Experience to Teach Science and Environmental Writing.

ERIC Educational Resources Information Center

Friedman, Sharon M.

The use of interpretive reporting techniques and programs offering real world training to writers may provide solutions to the problems encountered in writing about science for the mass media. Both science and environmental writers have suggested that the problems they face would be decreased by the use of more interpretive and investigative…

Mental Health Needs and Treatment of New Hampshire Unemployed

ERIC Educational Resources Information Center

Jarzombek, Michael

2010-01-01

The intent of this research is to understand the types of mental health problems individuals encounter during periods of unemployment, and the severity of those problems from an individual, family and community-based perspective. Of primary importance is determining whether or not treatment services are utilized, and if so, the sensitivity…

Organizational factors in fire prevention: roles, obstacles, and recommendations

Treesearch

John R. Christiansen; William S. Folkman; Keith W. Warner; Michael L. Woolcott

1976-01-01

Problems being encountered in implementing fire prevention programs were explored by studying the organization for fire prevention at the Fish Lake, Uinta, and Wasatch National Forests in Utah. The study focused on role congruency in fire prevention activities and on the social and organizational obstacles to effective programs. The problems identified included lack of...

An Interdisciplinary Program in Technical Communications: Problems Encountered.

ERIC Educational Resources Information Center

Eckman, Martha

The need for experts in technical communication is growing significantly while the number of college graduates in the field accounts for less than one percent of the need. Three major types of problems should be considered in trying to establish a technical communication program: those involving society's need for better technical communicators,…

34 CFR 356.11 - What types of problems may be researched under the fellowship program?

Code of Federal Regulations, 2011 CFR

2011-07-01

... REHABILITATION RESEARCH: RESEARCH FELLOWSHIPS What Kinds of Activities Does the Department Support Under This... encountered by individuals with disabilities in their daily lives that are due to the presence of a disabling... disabilities, and problems connected with the conduct of disability research may be addressed under this...

34 CFR 356.11 - What types of problems may be researched under the fellowship program?

Code of Federal Regulations, 2010 CFR

2010-07-01

... REHABILITATION RESEARCH: RESEARCH FELLOWSHIPS What Kinds of Activities Does the Department Support Under This... encountered by individuals with disabilities in their daily lives that are due to the presence of a disabling... disabilities, and problems connected with the conduct of disability research may be addressed under this...

Problematic Situations in the Lives of Urban African American Middle School Students: A Qualitative Study

ERIC Educational Resources Information Center

Farrell, Albert D.; Erwin, Elizabeth H.; Allison, Kevin W.; Meyer, Aleta; Sullivan, Terri; Camou, Suzanne; Kliewer, Wendy; Esposito, Layla

2007-01-01

Qualitative methods were used to identify problem situations encountered by adolescents in urban middle schools serving a predominantly African American student population. Interviews focusing on identifying problem situations and the context in which they occur were conducted with 60 adolescents including students and peer mediators at middle…

Improving Problem-Solving Skills with the Help of Plane-Space Analogies

ERIC Educational Resources Information Center

Budai, László

2013-01-01

We live our lives in three-dimensional space and encounter geometrical problems (equipment instructions, maps, etc.) every day. Yet there are not sufficient opportunities for high school students to learn geometry. New teaching methods can help remedy this. Specifically our experience indicates that there is great promise for use of geometry…

Evaluation of Distant Education Programs with Regards to Various Shareholder Opinions

ERIC Educational Resources Information Center

Tonbuloglu, Betül; Gürol, Aysun

2016-01-01

The strong demand and rapid increase in the number of programs concerning distant education programs has put the quality problem of distant education services into the agenda. It is crucial to determine the strengths and weaknesses of distant education programs, the problems encountered by these programs and making the required improvements. The…

[Management of asthma in a context of ambulatory pediatrics: relevance and possibility to avoid the problems. Gruppo de lavoro pediatri dell'Abruzzo Basilicata e Puglia].

PubMed

Misticoni, G; Marchetti, F; D'Andrea, N

1994-01-01

41 pediatricians agreed to register on a very simple form, all the cases of children affected by bronchial asthma visited in their clinic during october 1993. The data included basic information related to the therapy prescribed, its duration, a judgement on the efficacy of symptoms control and the main problems encountered with the children and their families. 237 cases were reported (mean age 4.6 year, range 2 months-13 years). 80% of children were monitored by the pediatrician; 47% had allergic reactions. The main drug used for profilaxis is ketotifen, a compound without documented efficacy; the main route for drug administration (especially during acute attacks) is by mouth, instead of by aerosol, evidencing problems in the health education on practical skills. In fact the main problems encountered by doctors are related to the communication with patients and families. This survey represents also a research model for involving health care providers and easily and quickly obtaining a useful, methodologically sound and interesting picture of everyday practice.

Internet-Based Recording Service Solves Maintenance Reporting Problems.

ERIC Educational Resources Information Center

Noah, Marilyn

2001-01-01

Details the response to a health threat caused by illegal wastewater disposal in Wisconsin. Traces the identification of the problem, ordinances and policies adopted to guide the remedy, and subsequent monitoring of environmental quality. (DDR)

Revision of certification standards for aviation maintenance personnel

NASA Technical Reports Server (NTRS)

Vipond, Leslie K.

1992-01-01

Part 65, Subparts D and E, of the Federal Aviation Regulations (FAR) identify the certification requirements for aviation mechanics and aviation repairmen. The training, experience, privileges, ratings, recordkeeping, and currency requirements for aviation maintenance personnel are also addressed by those parts of the FAR. The recent emergence of the aging fleet problem and the introduction of new technologies, aircraft, engines, and aeronautical products has caused certain portions of these rules to become obsolete. Further, international political arrangements, such as bilateral airworthiness and maintenance agreements, International Civil Aviation Organization (ICAO) standards, certain international agreements for maintenance personnel training, and mechanic certificate reciprocity, have all impacted on the current regulatory policy.

Status of Tamil Language in Singapore: An Analysis of Family Domain

ERIC Educational Resources Information Center

Kadakara, Shanmugam

2015-01-01

This paper addresses the phenomenon of Language Maintenance and Language Shift through a qualitative study of Tamil language in the family domain in Singapore. The influence of Singapore's bilingual policy and the institutional support offered for maintenance of Tamil language provide the context in which the central research problem of the status…

An Empirical Validation of the Effectiveness of a Computerized Game to Teach Troubleshooting.

ERIC Educational Resources Information Center

Simutis, Zita M.; And Others

Forty-two enlisted men and women with no prior knowledge about electronics maintenance or logic diagrams participated in research designed to collect preliminary data on the training effectiveness of a problem solving computerized game for teaching electronics maintenance. Two games available on the University of Illinois PLATO Computer-Based…

. . . While Others Conserve Cash by Converting from Gasoline to Propane.

ERIC Educational Resources Information Center

Rasmussen, Scott A.

1988-01-01

Since 1983, when the David Douglas Public Schools (Portland, Oregon) converted 30 buses to propane fuel, the district has saved $75,000 in fuel and maintenance costs. Propane is priced consistently lower than gasoline and burns cleaner. Since propane engines do not require a carburetor, there are fewer maintenance problems. (MLH)

The snowmobile

Treesearch

John W. Hetherington

1971-01-01

As use of the snowmobile has increased - nearly 1 1/2 million now in use - the development and maintenance of snowmobile use areas has become a concern. A study made by Bombardier, Ltd., calls attention to safety problems, costs, trail design and maintenance, sign systems, rules and aids for snowmobilers, safety patrols and other services, and safeguards for the...

Finishes for Wood Decks

Treesearch

Mark Knaebe

2013-01-01

Wood decks have become an important part of residential construction. Wood decks can add versatile living space to a home and, with minimal maintenance, provide decades of use. However, wood decks are exposed to high levels of stress from severe weather conditions that shrink and swell the wood. Without proper maintenance, wood decks can develop problems such as checks...

Is Deferred Maintenance Putting Your College at Risk?

ERIC Educational Resources Information Center

Abramson, Paul

1997-01-01

There is a national increase in the deferred maintenance of colleges and universities in the United States. The resulting deterioration represents a threat to the capability of higher education facilities to support mission of the colleges and universities they house. A series of questions concerning what the problems are and how they can be…

The $7-Billion Patch for Campus Maintenance

ERIC Educational Resources Information Center

Carlson, Scott

2009-01-01

Colleges are facing a growing deferred-maintenance problem, which at many public institutions adds up to repair bills in the hundreds of millions of dollars. Sometimes state legislatures have not supported those colleges at levels needed to maintain campus infrastructure. But at the same time, colleges continue to expand their campuses even as…

Anabat bat detection system: description and maintenance manual.

Treesearch

Douglas W. Waldren

2000-01-01

Anabat bat detection systems record ultrasonic bat calls on cassette tape by using a sophisticated ultrasonic microphone and cassette tape interface. This paper describes equipment setup and some maintenance issues. The layout and function of display panels are presented with special emphasis on how to use this information to troubleshoot equipment problems. The...

Colleges Scrabble for Money to Reduce Huge Maintenance Backlog, Estimated to Exceed $70-Billion; New Federal Help Seen Unlikely.

ERIC Educational Resources Information Center

Grassmuck, Karen

1990-01-01

Catching up with deferred maintenance and improvements at colleges and universities has become a serious problem of time and money, and new federal state, and local safety regulations are increasing costs. Some contend administrators have failed to provide leadership at their own institutions. (MSE)

Trace analysis in the food and beverage industry by capillary gas chromatography: system performance and maintenance.

PubMed

Hayes, M A

1988-04-01

Gas chromatography (GC) is the most widely used analytical technique in the food and beverage industry. This paper addresses the problems of sample preparation and system maintenance to ensure the most sensitive, durable, and efficient results for trace analysis by GC in this industry.

Roofs--Their Problems and Solutions.

ERIC Educational Resources Information Center

Swentkofske, Carl J.

Most roofs are meant to withstand the elements for a period of 20 years; to achieve this goal, however, school officials must believe in a dedicated maintenance program and sell it to their superiors and school boards. Establishment of a school district roof maintenance program is explained. Job qualifications and training methods for an inhouse…

Science and Technology Teachers' Opinions about Problems Faced While Teaching 8th Grade Science Unit "Force and Motion" and Suggestions for Solutions

ERIC Educational Resources Information Center

Bozdogan, Aykut Emre; Uzoglu, Mustafa

2015-01-01

The aim of this study is to explore the problems encountered while teaching force and motion unit in 8th grade science and technology course from teachers' perspectives and offer solutions to eliminate these problems. The study was conducted with 248 science and technology teachers working in 7 regions in Turkey in 2012-2013 academic year.…

A Study of Moroccan Pupils' Difficulties at Second Baccalaureate Year in Solving Chemistry Problems Relating to the Reactivity of Ethanoate Ions and to Copper-Aluminium Cells

ERIC Educational Resources Information Center

Ouasri, Ali

2017-01-01

This paper investigates the difficulties that Moroccan pupils (18-19) of the second Baccalaureate year encountered in solving chemical equilibrium problems relating to ethanoate ions' reactivity with water and methanoic acid, and to copper-aluminum cells. The pupils were asked to provide answers to questions derived from two problems. The…

L'Education des Adultes et les Problemes de Main-D'Oeuvre (Adult Education and Manpower Problems). Les Cahiers de L'I.C.E., 6-7.

ERIC Educational Resources Information Center

Canadian Inst. for Adult Education, Montreal (Quebec).

The impact of continuing education on the complex problems encountered in developing and implementing overall manpower policies is discussed and documented in this anthology. An introductory chapter on adult education and the labor force is followed by surveys and critiques of manpower policy and the organization of the labor market in Sweden, the…

The extraction of accurate coordinates of images on photographic plates by means of a scanning type measuring machine

NASA Technical Reports Server (NTRS)

Ross, B. E.

1971-01-01

The Moire method experimental stress analysis is similar to a problem encountered in astrometry. It is necessary to extract accurate coordinates from images on photographic plates. The solution to the mutual problem found applicable to the field of experimental stress analysis is presented to outline the measurement problem. A discussion of the photo-reading device developed to make the measurements follows.

Schema Knowledge for Solving Arithmetic Story Problems: Some Affective Components.

ERIC Educational Resources Information Center

Marshall, Sandra P.

This report discusses the role of affect in cognitive processing. The importance of affect in processing mathematical information is described in the context of solving arithmetic story problems. Some ideas are offered about the way affective responses to mathematical problem solving situations influence the development, maintenance, and retrieval…

A Condition Based Maintenance Approach to Forecasting B-1 Aircraft Parts

DTIC Science & Technology

2017-03-23

1 Problem Statement...aimed at making the USAF aware of CBM methods, and recommending which techniques to consider for implementation. Problem Statement The USAF relies on... problem , this research will seek to highlight common CBM forecasting methods that are well established and evaluate its suitability with current USAF

Adoption of Clean Cookstoves after Improved Solid Fuel Stove Programme Exposure: A Cross-Sectional Study in Three Peruvian Andean Regions.

PubMed

Wolf, Jennyfer; Mäusezahl, Daniel; Verastegui, Hector; Hartinger, Stella M

2017-07-08

This study examined measures of clean cookstove adoption after improved solid fuel stove programmes in three geographically and culturally diverse rural Andean settings and explored factors associated with these measures. A questionnaire was administered to 1200 households on stove use and cooking behaviours including previously defined factors associated with clean cookstove adoption. Logistic multivariable regressions with 16 pre-specified explanatory variables were performed for three outcomes; (1) daily improved solid fuel stove use, (2) use of liquefied petroleum gas stove and (3) traditional stove displacement. Eighty-seven percent of households reported daily improved solid fuel stove use, 51% liquefied petroleum gas stove use and 66% no longer used the traditional cookstove. Variables associated with one or more of the three outcomes are: education, age and civil status of the reporting female, household wealth and size, region, encounters of problems with the improved solid fuel stove, knowledge of somebody able to build an improved solid fuel stove, whether stove parts are obtainable in the community, and subsidy schemes. We conclude that to be successful, improved solid fuel stove programmes need to consider (1) existing household characteristics, (2) the household's need for ready access to maintenance and repair, and (3) improved knowledge at the community level.

Adoption of Clean Cookstoves after Improved Solid Fuel Stove Programme Exposure: A Cross-Sectional Study in Three Peruvian Andean Regions

PubMed Central

Wolf, Jennyfer; Mäusezahl, Daniel; Verastegui, Hector; Hartinger, Stella M.

2017-01-01

This study examined measures of clean cookstove adoption after improved solid fuel stove programmes in three geographically and culturally diverse rural Andean settings and explored factors associated with these measures. A questionnaire was administered to 1200 households on stove use and cooking behaviours including previously defined factors associated with clean cookstove adoption. Logistic multivariable regressions with 16 pre-specified explanatory variables were performed for three outcomes; (1) daily improved solid fuel stove use, (2) use of liquefied petroleum gas stove and (3) traditional stove displacement. Eighty-seven percent of households reported daily improved solid fuel stove use, 51% liquefied petroleum gas stove use and 66% no longer used the traditional cookstove. Variables associated with one or more of the three outcomes are: education, age and civil status of the reporting female, household wealth and size, region, encounters of problems with the improved solid fuel stove, knowledge of somebody able to build an improved solid fuel stove, whether stove parts are obtainable in the community, and subsidy schemes. We conclude that to be successful, improved solid fuel stove programmes need to consider (1) existing household characteristics, (2) the household’s need for ready access to maintenance and repair, and (3) improved knowledge at the community level. PMID:28698468

Indoor air quality in Portuguese schools: levels and sources of pollutants.

PubMed

Madureira, J; Paciência, I; Pereira, C; Teixeira, J P; Fernandes, E de O

2016-08-01

Indoor air quality (IAQ) parameters in 73 primary classrooms in Porto were examined for the purpose of assessing levels of volatile organic compounds (VOCs), aldehydes, particulate matter, ventilation rates and bioaerosols within and between schools, and potential sources. Levels of VOCs, aldehydes, PM2.5 , PM10 , bacteria and fungi, carbon dioxide (CO2 ), carbon monoxide, temperature and relative humidity were measured indoors and outdoors and a walkthrough survey was performed concurrently. Ventilation rates were derived from CO2 and occupancy data. Concentrations of CO2 exceeding 1000 ppm were often encountered, indicating poor ventilation. Most VOCs had low concentrations (median of individual species <5 μg/m(3) ) and were below the respective WHO guidelines. Concentrations of particulate matter and culturable bacteria were frequently higher than guidelines/reference values. The variability of VOCs, aldehydes, bioaerosol concentrations, and CO2 levels between schools exceeded the variability within schools. These findings indicate that IAQ problems may persist in classrooms where pollutant sources exist and classrooms are poorly ventilated; source control strategies (related to building location, occupant behavior, maintenance/cleaning activities) are deemed to be the most reliable for the prevention of adverse health consequences in children in schools. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

Micromechanisms with floating pivot

DOEpatents

Garcia, Ernest J.

2001-03-06

A new class of tilting micromechanical mechanisms have been developed. These new mechanisms use floating pivot structures to relieve some of the problems encountered in the use of solid flexible pivots.

Effects of response preference on resistance to change.

PubMed

Ringdahl, Joel E; Berg, Wendy K; Wacker, David P; Crook, Kayla; Molony, Maggie A; Vargo, Kristina K; Neurnberger, Jodi E; Zabala, Karla; Taylor, Christopher J

2018-01-01

Treatments based on differential reinforcement of alternative behavior, such as functional communication training, are widely used. Research regarding the maintenance of related treatment effects is limited. Nevin and Wacker (2013) provided a conceptual framework, rooted in behavioral momentum theory, for the study of treatment maintenance that addressed two components: (a) reemergence of problem behavior, and (b) continued expression of appropriate behavior. In the few studies on this topic, focus has been on variables impacting the reemergence of problem behavior, with fewer studies evaluating the persistence of appropriate behavior. Given the findings from applied research related to functional communication training, variables related to response topography, such as response preference, may impact this aspect of maintenance. In the current study, the impact of response preference on persistence was evaluated in the context of functional communication training for individuals who did not exhibit problem behavior (Experiment 1) and for individuals with a history of reinforcement for problem behavior (Experiment 2). High-preferred mands were more persistent than low-preferred mands. These findings suggest that response related variables, such as response preference, impact response persistence and further suggest that response related variables should be considered when developing interventions such as functional communication training. © 2018 Society for the Experimental Analysis of Behavior.

A Corrosion Control Manual for Rail Rapid Transit

NASA Technical Reports Server (NTRS)

Gilbert, L. O.; Fitzgerald, J. H., III; Menke, J. T.; Lizak, R. M. (Editor)

1982-01-01

This manual addresses corrosion problems in the design, contruction, and maintenance of rapid transit systems. Design and maintenance solutions are provided for each problem covered. The scope encompasses all facilities of urban rapid transit systems: structures and tracks, platforms and stations, power and signals, and cars. The types of corrosion and their causes as well as rapid transit properties are described. Corrosion control committees, and NASA, DOD, and ASTM specifications and design criteria to which reference is made in the manual are listed. A bibliography of papers and excerpts of reports is provided and a glossary of frequently used terms is included.

Power plant maintenance scheduling using ant colony optimization: an improved formulation

NASA Astrophysics Data System (ADS)

Foong, Wai Kuan; Maier, Holger; Simpson, Angus

2008-04-01

It is common practice in the hydropower industry to either shorten the maintenance duration or to postpone maintenance tasks in a hydropower system when there is expected unserved energy based on current water storage levels and forecast storage inflows. It is therefore essential that a maintenance scheduling optimizer can incorporate the options of shortening the maintenance duration and/or deferring maintenance tasks in the search for practical maintenance schedules. In this article, an improved ant colony optimization-power plant maintenance scheduling optimization (ACO-PPMSO) formulation that considers such options in the optimization process is introduced. As a result, both the optimum commencement time and the optimum outage duration are determined for each of the maintenance tasks that need to be scheduled. In addition, a local search strategy is presented in this article to boost the robustness of the algorithm. When tested on a five-station hydropower system problem, the improved formulation is shown to be capable of allowing shortening of maintenance duration in the event of expected demand shortfalls. In addition, the new local search strategy is also shown to have significantly improved the optimization ability of the ACO-PPMSO algorithm.

Comparison of health-related quality of life of children during maintenance therapy with acute lymphoblastic leukemia versus siblings and healthy children in India.

PubMed

Bansal, Minakshi; Sharma, Kamlesh K; Vatsa, Manju; Bakhshi, Sameer

2013-05-01

Data on quality of life (QOL) specifically in maintenance therapy of acute lymphoblastic leukemia (ALL) are minimal. This study was done to assess various items listed in domains of QOL (physical, emotional, social and school health domains) of children with ALL during maintenance therapy, and compare the same with those of their siblings and other healthy children. Forty children on maintenance therapy of ALL, 40 siblings and 40 healthy children were assessed for QOL by child self-report using PedsQL 4.0 Generic Core in the local language. Means were computed and compared for each domain with one-way analysis of variance (ANOVA), wherein higher values reflected better QOL. Overall QOL of children with ALL in maintenance therapy (77.16 ± 10.98) was significantly poorer than that of siblings (93.56 ± 4.41) and healthy children (93.02 ± 3.76) (p < 0.001), but their abilities of self-care, household work, exercise, attentiveness, memory and homework were unaffected. There was significantly higher absenteeism due to sickness and hospital visits, and increased emotional problems (fear, anger, sleeping problems) among children with ALL. In the social health domain, children with ALL reported difficulty in maintaining friendships and competing. QOL of siblings was as good as that of healthy children in physical, social and school health domains, but they had increased emotional problems such as anger and sadness. Healthy children reported significantly higher future worries and bullying than children with ALL and siblings. This study validated that the QOL of children with ALL during maintenance therapy was significantly poorer than that of siblings and healthy children. The study identified various items in each domain of QOL that were affected in these children, and thus would assist in guiding healthcare professionals to focus on these specific items so as to improve their overall QOL.

Towards a Cognitively Realistic Computational Model of Team Problem Solving Using ACT-R Agents and the ELICIT Experimentation Framework

DTIC Science & Technology

2014-06-01

intelligence analysis processes. However, as has been noted in previous work (e.g., [42]), there are a number of important differences between the nature of the...problem encountered in the context of the ELICIT task and the problems dealt with by intelligence analysts. Perhaps most importantly, the fact that a...see Section 7). 6 departure from the reality of most intelligence analysis situations: in most real-world intelligence analysis problems agents have

A study of dynamical behavior of space environment

NASA Technical Reports Server (NTRS)

Wu, S. T.

1974-01-01

Studies have covered a wide range of problems in the space environment, such as the problems of the dynamical behavior of the thermosphere, hydromagnetic wave propagation in the ionosphere, and interplanetary space environment. The theories used to analyze these problems range from a continuum theory of magnetohydrodynamics to the kinetic theory of free molecular flow. This is because the problems encountered covered the entire range of the Knudsen number (i.e., the ratio of mean free path to the characteristic length). Significant results are summarized.

Sunlight Diffusing Tent for Lunar Worksite

NASA Technical Reports Server (NTRS)

Burleson, Blair; Clark, Todd; Deese, Todd; Gentry, Ernest; Samad, Abdul

1990-01-01

The purpose is to provide a solution to problems astronauts encounter with sunlight on the lunar surface. Due to the absence of an atmosphere the Moon is subjected to intense sunlight creating problems with color and contrast. This problem can be overcome by providing a way to reduce intensity and diffuse the light in a working environment. The solution to the problem utilizes an umbrella, tent-like structure covered with a diffusing material. The design takes into account structural materials, stresses, fabrics, and deployment.

Impact of a Clinical Pharmacy Service on the Management of Patients in a Sickle Cell Disease Outpatient Center.

PubMed

Han, Jin; Bhat, Shubha; Gowhari, Michel; Gordeuk, Victor R; Saraf, Santosh L

2016-11-01

Ambulatory care clinical pharmacy services have expanded beyond primary care settings, but literature supporting the benefits of clinical pharmacy involvement with patients who have rare diseases such as sickle cell disease (SCD) is lacking. Hydroxyurea is the only agent approved by the U.S. Food and Drug Administration for the treatment of SCD; full benefit in controlling pain episodes and other complications is achieved through monitored escalation to a maximum tolerated dose. The primary objective of this analysis was to evaluate the impact of a newly implemented clinical pharmacy service on the management of patients with SCD. We performed a retrospective cross-sectional analysis of 385 adults with SCD who received care between January 1, 2014, and December 31, 2014, at a single Sickle Cell Outpatient Center that implemented a clinical pharmacy service in August 2013. Data were collected on hydroxyurea dose escalation, immunization completion rates, and health maintenance metrics (screening for nephropathy with microalbuminuria testing, retinopathy with annual retinal examinations, and pulmonary hypertension with echocardiography). The impact of the clinical pharmacy service on quality measurements was evaluated by using univariate and multivariate analyses. The number of pharmacist encounters, defined as a clinic visit when a clinical pharmacist interacted with a patient as documented in the medical records, was associated with an improved hydroxyurea dose escalation rate (odds ratio [OR] 1.48, 95% confidence interval [CI] 1.07-2.05, p=0.02). Immunization rates for the 23-valent pneumococcal polysaccharide vaccine, the 13-valent pneumococcal conjugate vaccine, and influenza vaccine were 66%, 47%, and 62%, respectively. The number of pharmacist encounters was associated with improved immunization completion rates (OR 1.38, 95% CI 1.17-1.62, p<0.001). Improved screening for microalbuminuria (OR 2.14, 95% CI 1.60-2.86, p<0.001) and sickle cell retinopathy (OR 1.16, 95% CI 1.00-1.35, p=0.05) were also associated with the number of pharmacist encounters. A new clinical pharmacy service implemented in managing a rare disease, SCD, was associated with an improved hydroxyurea dose escalation rate, immunization completion rates, and health maintenance metrics. © 2016 Pharmacotherapy Publications, Inc.

Twenty-seven Strategies for Teaching Contraception to Adolescents.

ERIC Educational Resources Information Center

Chesler, Joan

1980-01-01

Research on the effects of education on adolescents' contraceptive behaviors is summarized and 27 teaching strategies, each related to a particular contraceptive problem adolescents encounter, are outlined. (JMF)

48 CFR 2919.812 - Contract administration.

Code of Federal Regulations, 2010 CFR

2010-10-01

... conduct periodic evaluations of the performance of an 8(a) contract at various stages of the contract period of performance. Any problems encountered during the performance evaluation, which cannot be...

The application of the statistical theory of extreme values to gust-load problems

NASA Technical Reports Server (NTRS)

Press, Harry

1950-01-01

An analysis is presented which indicates that the statistical theory of extreme values is applicable to the problems of predicting the frequency of encountering the larger gust loads and gust velocities for both specific test conditions as well as commercial transport operations. The extreme-value theory provides an analytic form for the distributions of maximum values of gust load and velocity. Methods of fitting the distribution are given along with a method of estimating the reliability of the predictions. The theory of extreme values is applied to available load data from commercial transport operations. The results indicate that the estimates of the frequency of encountering the larger loads are more consistent with the data and more reliable than those obtained in previous analyses. (author)

The ESA mission to Comet Halley

NASA Technical Reports Server (NTRS)

Reinhard, R.

1981-01-01

The Europeon Space Agency's approximately Giotto mission plans for a launch in July 1985 with a Halley encounter in mid-March 1986 4 weeks after the comet's perihelion passage. Giotto carries 10 scientific experiments, a camera, neutral, ion and dust mass spectrometers, a dust impact detector system, various plasma analyzers, a magnetometer and an optical probe. The instruments are described, the principles on which they are based are described, and the experiment key performance data are summarized. The launch constraints the helicentric transfer trajectory, and the encounter scenario are analyzed. The Giotto spacecraft major design criteria, spacecraft subsystem and the ground system are described. The problem of hypervelocity dust particle impacts in the innermost part of the coma, the problem of spacecraft survival, and the adverse effects of impact-generated plasma aroung the spacecraft are considered.

Science aspects of a 1980 flyby of Comet Encke with a Pioneer spacecraft

NASA Technical Reports Server (NTRS)

Jaffe, L. D.; Elachi, C.; Giffin, C. E.; Huntress, W.; Newburn, R. L.; Parker, R. H.; Taylor, F. W.; Thorpe, T. E.

1974-01-01

Results are presented of an investigation of the feasibility of a 1980 flyby of Comet Encke using a Pioneer class spacecraft. Specific areas studied include: science objectives and rationale; science observables; effects of encounter velocity; science encounter and targeting requirements; selection and description of science instruments; definition of a candidate science payload; engineering characteristics of suggested payload; value of a separable probe; science instruments for a separable probe; science payload integration problems; and science operations profile.

The ethical junior: a typology of ethical problems faced by house officers

PubMed Central

McDougall, Rosalind; Sokol, Daniel K

2008-01-01

Although many studies have explored the experiences of doctors in their first postgraduate year, few have focused on the ethical issues encountered by this group. Based on an extensive literature review of research involving house officers, we argue that these doctors encounter a broad range of ‘everyday’ ethical challenges, from truth-telling to working in non-ideal conditions. We propose a typology of house officers' ethical issues and advocate prioritizing these issues in undergraduate medical ethics and law curricula. PMID:18299625

Challenges of implementing intervention research in persons with dementia: example of a glider swing intervention.

PubMed

Snyder, M; Tseng, Y H; Brandt, C; Croghan, C; Hanson, S; Constantine, R; Kirby, L

2001-01-01

Intervention studies for persons with dementia present many challenges. This article describes challenges encountered in conducting a glider swing intervention study for persons with dementia and the strategies used to manage the problems encountered. The overall purpose of a quasi-experimental study was to explore the effects of a glider swing intervention on emotions, relaxation, and aggressive behaviors in nursing home residents with dementia. Suggestions for investigators conducting intervention studies for persons with dementia are provided.

Abdomino-perineal approach for management of traumatic strictured posterior urethra.

PubMed

Ezzat, M I

1990-01-01

Twelve patients with traumatic posterior urethral stricture have been treated using a combined transpubic-transperineal approach. The strictured segments were long and associated with complicated problems in 4 patients. Three of them have had bulbo-vesical anastomosis operation, and iatrogenic urethro-rectal fistula was encountered in the fourth patient. Combined approach provided the best chance for success. Our results of urethral lumen patency and continence of urine were excellent. However, we encountered 7 patients dissatisfied with their erection.

(n, N) type maintenance policy for multi-component systems with failure interactions

NASA Astrophysics Data System (ADS)

Zhang, Zhuoqi; Wu, Su; Li, Binfeng; Lee, Seungchul

2015-04-01

This paper studies maintenance policies for multi-component systems in which failure interactions and opportunistic maintenance (OM) involve. This maintenance problem can be formulated as a Markov decision process (MDP). However, since an action set and state space in MDP exponentially expand as the number of components increase, traditional approaches are computationally intractable. To deal with curse of dimensionality, we decompose such a multi-component system into mutually influential single-component systems. Each single-component system is formulated as an MDP with the objective of minimising its long-run average maintenance cost. Under some reasonable assumptions, we prove the existence of the optimal (n, N) type policy for a single-component system. An algorithm to obtain the optimal (n, N) type policy is also proposed. Based on the proposed algorithm, we develop an iterative approximation algorithm to obtain an acceptable maintenance policy for a multi-component system. Numerical examples find that failure interactions and OM pose significant effects on a maintenance policy.

A review study of maintenance and management issues in Malaysian commercial building towards sustainable future practice

NASA Astrophysics Data System (ADS)

Nawi, Mohd Nasrun Mohd; Baharum, Faizal; Ibrahim, Siti Halipah; Riazi, Salman Riazi Mehdi

2017-10-01

Good management of the building will be able to influence the quality of the buildings that remain long, safe and beautiful without any damage and problems. This research paper aims to explore the issue of maintenance and management that appear in managing the commercial building in Malaysian construction and property industry. The data in this research has been gathered through the reviewing process of secondary data such as journals, proceeding, thesis etc. in the area that related to maintenance and management issue in commercial building. As highlighted by previous study, building a good management can ensure that the facilities available in the building are well and meet the standard. Thus, exposure to the problems and needs in the management of the building would be able to improve the quality of building management systems to be more effective and fulfil the client needs and features.

Cardiac emergencies and problems of the critical care patient.

PubMed

Marr, Celia M

2004-04-01

Cardiac disease and dysfunction can occur as a primary disorder(ie, with pathology situated in one or more of the cardiac structures) or can be classified as a secondary problem when it occurs in patients with another primary problem that has affected the heart either directly or indirectly. Primary cardiac problems are encountered in horses presented to emergency clinics; however,this occurs much less frequently in equine critical patients than cardiac problems arising secondary to other conditions. Nevertheless,if primary or secondary cardiac problems are not identified and addressed, they certainly contribute to the morbidity and mortality of critical care patients.

Procedures for estimating the frequency of commercial airline flights encountering high cabin ozone levels

NASA Technical Reports Server (NTRS)

Holdeman, J. D.

1979-01-01

Three analytical problems in estimating the frequency at which commercial airline flights will encounter high cabin ozone levels are formulated and solved: namely, estimating flight-segment mean levels, estimating maximum-per-flight levels, and estimating the maximum average level over a specified flight interval. For each problem, solution procedures are given for different levels of input information - from complete cabin ozone data, which provides a direct solution, to limited ozone information, such as ambient ozone means and standard deviations, with which several assumptions are necessary to obtain the required estimates. Each procedure is illustrated by an example case calculation that uses simultaneous cabin and ambient ozone data obtained by the NASA Global Atmospheric Sampling Program. Critical assumptions are discussed and evaluated, and the several solutions for each problem are compared. Example calculations are also performed to illustrate how variations in lattitude, altitude, season, retention ratio, flight duration, and cabin ozone limits affect the estimated probabilities.

Psychiatric research: what ethical concerns do LRECs encounter? A postal survey. Local research ethics committees.

PubMed

Osborn, D P J; Fulford, K W M

2003-02-01

Psychiatric research can occasionally present particular ethical dilemmas, but it is not clear what kind of problems local research ethics committees (LRECs) actually experience in this field. We aimed to assess the type of problems that committees encounter with psychiatric research, using a postal survey of 211 LRECs. One hundred and seven (51%) of those written to replied within the time limit. Twenty eight (26%) experienced few problems with psychiatric applications. Twenty six (24%) emphasised the value of a psychiatric expert on the committee. The most common issues raised were informed consent (n=64, 60%) and confidentiality (n=17, 16%). The use of placebos (and washout periods) (n=18, 17%), the validity of psychiatric questionnaires (n=16, 15%) and overuse of psychiatric "jargon" (n=14, 13%) in psychiatric applications also raised concern. Our results suggest that LRECs have specific concerns regarding methodology, consent, and confidentiality in psychiatric research, and that they find psychiatric input invaluable.

Organizational justice and insomnia: Relationships between justice components and insomnia symptoms among private company workers in Japan.

PubMed

Hayashi, Toshio; Odagiri, Yuko; Takamiya, Tomoko; Ohya, Yumiko; Inoue, Shigeru

2015-01-01

Organizational justice (OJ) is an important psychosocial factor and it consists of several components. Previous studies have shown that low perceived OJ is associated with various health problems. However, the relationships between each justice component and health outcomes have not been fully examined. The purpose of this study was to clarify the relationships between OJ and insomnia, including OJ components and insomnia symptoms. Cross-sectional self-reported questionnaire data from 1,893 employees (92.2% of subjects) were collected. OJ was measured using the Japanese version of the OJ questionnaire, which has four components (distributive, procedural, interpersonal and informational). Insomnia was assessed with the Athens Insomnia Scale. Logistic regression analysis, with insomnia as a dependent variable and OJ as an independent variable, was conducted. Subjects with low overall OJ had a higher risk of insomnia (adjusted odds ratio (AOR), 2.37; 95% confidence interval (CI), 1.59 to 3.53) and two insomnia symptoms (AOR of 2.47 and 95% CI of 1.68 to 3.65 for sleep induction problem; AOR of 1.73 and 95% CI of 1.21 to 2.48 for sleep maintenance problem). The four justice components were all associated with insomnia and sleep induction problems. Sleep maintenance problems were associated with only the distributive justice component. All four justice components were associated with both insomnia and sleep induction problems. Sleep maintenance problems, however, showed different features. Specifically, the distributive justice component seemed to be a key factor in the relationship between OJ and insomnia. These findings might provide useful information for preventing the adverse effects of insomnia.

Building a maintenance policy through a multi-criterion decision-making model

NASA Astrophysics Data System (ADS)

Faghihinia, Elahe; Mollaverdi, Naser

2012-08-01

A major competitive advantage of production and service systems is establishing a proper maintenance policy. Therefore, maintenance managers should make maintenance decisions that best fit their systems. Multi-criterion decision-making methods can take into account a number of aspects associated with the competitiveness factors of a system. This paper presents a multi-criterion decision-aided maintenance model with three criteria that have more influence on decision making: reliability, maintenance cost, and maintenance downtime. The Bayesian approach has been applied to confront maintenance failure data shortage. Therefore, the model seeks to make the best compromise between these three criteria and establish replacement intervals using Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE II), integrating the Bayesian approach with regard to the preference of the decision maker to the problem. Finally, using a numerical application, the model has been illustrated, and for a visual realization and an illustrative sensitivity analysis, PROMETHEE GAIA (the visual interactive module) has been used. Use of PROMETHEE II and PROMETHEE GAIA has been made with Decision Lab software. A sensitivity analysis has been made to verify the robustness of certain parameters of the model.

A Multivariate Examination of the Child-Abuse Potential of Parents with Children Aged 0-6

ERIC Educational Resources Information Center

Cetin, Zeynep; Ozozen Danaci, Miray

2016-01-01

Problem Statement: Child abuse, defined by the World Health Organization as "intentional or unintentional behavior by adults, society, or a country with negative consequences for the health and physical development of the child," is a social problem frequently encountered in all cultures and societies. It is need to this study because of…

Encountering Problems at Home and at School: Language and Cognition in Two Settings.

ERIC Educational Resources Information Center

Martini, Mary

This paper discusses cognitive communicative training in preschool and reports on a study of 11 Hawaiian preschoolers that examined how these children interacted with others, used language, manipulated objects, and solved problems at home and at school. The study observed the children at school and at home over a 5-month period, collecting…

Reaching Rural Handicapped Children: The Transportation Situation in Rural Service Delivery. Making It Work in Rural Communities. A Rural Network Monograph.

ERIC Educational Resources Information Center

Tucker, Jamie; And Others

Almost everyone who responded to three transportation surveys of rural Handicapped Children's Early Education Program (HCEEP) projects identified transportation as a critical problem in the delivery of services to handicapped children in rural areas. Transportation problems encountered were attributed to environmental/geographic factors,…

"Seeing It on the Screen Isn't Really Seeing It": Reading Problems of Writers Using Word Processing.

ERIC Educational Resources Information Center

Haas, Christina

An observational study examined computer writers' use of hard copy for reading. The study begins with a description, based on interviews, of four kinds of reading problems encountered by writers using word processing; formatting, proofreading, reorganizing, and critical reading ("getting a sense of the text"). Subjects, six freshmen…

Vocabulary Instruction: Software Flashcards vs. Word Clouds

ERIC Educational Resources Information Center

Mansouri, Vahid

2015-01-01

When it comes to language learning, vocabulary learning is the main activity focused on. Vocabulary learning is the main problem and also the goal of new language learners. It is one of the major problems that language learners encounter during learning a new language. Krashen (1989) (cited in Tokac, 2005) points out the role of vocabulary in a…

The Representation of Anatomical Structures through Computer Animation for Scientific, Educational and Artistic Applications.

ERIC Educational Resources Information Center

Stredney, Donald Larry

An overview of computer animation and the techniques involved in its creation is provided in the introduction to this masters thesis, which focuses on the problems encountered by students in learning the forms and functions of complex anatomical structures and ways in which computer animation can address these problems. The objectives for,…

Extending Basic Learning Opportunities: Challenge and Response. UNESCO-UNICEF Co-operative Programme Digest No. 16.

ERIC Educational Resources Information Center

Prakasha, Veda; And Others

This digest focuses on problems encountered in the expansion of facilities for universal primary education and responses being developed to overcome these problems. The central message of the document is that nonformal structures of learning and community involvement play a key role in the expansion of basic learning opportunities in the…

Transforming "Ecosystem" from a Scientific Concept into a Teachable Topic: Philosophy and History of Ecology Informs Science Textbook Analysis

ERIC Educational Resources Information Center

Schizas, Dimitrios; Papatheodorou, Efimia; Stamou, George

2018-01-01

This study conducts a textbook analysis in the frame of the following working hypothesis: The transformation of scientific knowledge into school knowledge is expected to reproduce the problems encountered with the scientific knowledge itself or generate additional problems, which may both induce misconceptions in textbook users. Specifically, we…

The problem of site variation within red pine provenance experiments

Treesearch

Mark J. Holst

1966-01-01

In spite of care taken in the selection of site and experimental design of provenance experiments, site heterogenity within the experimental area may be more complex than was anticipated when the experiment was established. The present paper describes a problem of this nature encountered in a red pine (Pinus resinosa Ait.) provenance experiment at...

75 FR 20326 - Technology Innovation Program (TIP) Notice of Availability of Funds and Announcement of Public...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-19

... efficiency gas turbines; composites make larger, more efficient wind turbine blades and provide improved... the virus to prepare a vaccine in record time, but encountered problems supplying the large volumes of... monitoring and analysis could address these problems and would help to not only respond rapidly to new virus...

78 FR 16876 - Biweekly Notice; Applications and Amendments to Facility Operating Licenses and Combined Licenses...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-19

....'' For problems with ADAMS, please contact the NRC's Public Document Room (PDR) reference staff at 1-800...://www.nrc.gov/reading-rm/adams.html . Persons who do not have access to ADAMS or who encounter problems... basis perspective they do affect the probability that missiles generated by the winds of the tornado...

Legal Challenges to Teacher Evaluation: Pitfalls and Possibilities in the States

ERIC Educational Resources Information Center

Hazi, Helen M.

2014-01-01

This article forecasts potential legal problems emerging from the use of new teacher evaluation systems in the states. This research was a policy analysis that combined three types of data to forecast the states and the legal challenges they might encounter: state policy data, selected case law, and problems from the literature of teacher…

Problems of Prediction of Delinquency and Related Conditions Over a Seven Year Period.

ERIC Educational Resources Information Center

Thurston, John R.; And Others

The writers of this paper draw on their own research efforts and an extensive review of the literature related to prediction of delinquency (and the related factors of personal and social adjustment, health problems, welfare status, and academic underachievement) to point out a number of deficiencies and difficulties encountered in research…

Ulysses log 1992

NASA Technical Reports Server (NTRS)

Perez, Raul Garcia

1993-01-01

The Ulysses Log tells the story of some intriguing problems that we (=The Spacecraft Team) have encountered. Ulysses was launched on 6 Oct. 1990, and it made the fastest trip to Jupiter (8 Feb. 1992). It is presently going out of the ecliptic. This paper presents log entries from the following areas: (1) ingenious maneuvers; (2) telecommunication problems; and (3) surprises.

Perceptions of Turkish Parents with Children Identified as Dyslexic about the Problems that They and Their Children Experience

ERIC Educational Resources Information Center

Yildiz, Mustafa; Yildirim, Kasim; Ates, Seyit; Rasinski, Timothy

2012-01-01

This study identified problems encountered by both dyslexic children and their parents. Seven parents were interviewed. Parents mentioned the negative attitudes of teachers towards them and their children, the use of incorrect practices in the classroom, and educational insufficiency in relation to dyslexia. Similarly, family members were found to…

The Development of Questioning as a Means of Framing Problems and Posing Challenges.

ERIC Educational Resources Information Center

Feigenbaum, Peter

When a person encounters a problem, the character, form, and content of his or her response provides psychologists with useful and interesting information about processes of challenge and their relationship to intellectual development. In essence, challenge is a developing relationship that is defined on the one hand by objective factors (a person…

The Struggle To Be Strong: True Stories by Teens about Overcoming Tough Times.

ERIC Educational Resources Information Center

Desetta, Al, Ed.; Wolin, Sybil, Ed.

This book presents 30 first-person accounts by teenagers that tell how they overcame major life obstacles. Many aren't the everyday problems most kids encounter, which makes their stories especially compelling-and their successes especially inspiring. The young writers wrote their stories to help teenagers with similar problems and stresses. The…

Do Focused Self-Explanation Prompts Overcome Seductive Details? A Multimedia Study

ERIC Educational Resources Information Center

Wang, Zhe; Adesope, Olusola

2017-01-01

Research on the seductive details effect on reading expository texts in multimedia learning environments has grown over the past few decades. However, less is known when seductive details are encountered in learning through worked-examples to solve problems. Thus, it is necessary to examine the seductive details effect when solving problems in a…

Crystals for stellar spectrometers

NASA Technical Reports Server (NTRS)

Alexandropoulos, N. G.; Cohen, G. G.

1974-01-01

Crystal evaluation as it applies to instrumentation employed in X-ray astronomy is reviewed, and some solutions are offered to problems that are commonly encountered. A general approach for selecting the most appropriate crystals for a given problem is also suggested. The energy dependence of the diffraction properties of (002) PET, (111) Ge, (101) ADP, (101) KAP, and (001) RAP are reported.

Guidelines for a Training Course in Noise Survey Techniques.

ERIC Educational Resources Information Center

Shadley, John; And Others

The course is designed to train noise survey technicians during a 3-5 day period to make reliable measurements of 75 percent of the noise problems encountered in the community. The more complex noise problems remaining will continue to be handled by experienced specialists. These technicians will be trained to assist State and local governments in…

Problems and Practical Solutions of Web-Based Courses: Lessons Learned from Three Educational Institutions.

ERIC Educational Resources Information Center

Miltiadou, Marios; McIsaac, Marina S.

The purpose of this paper is to review problems encountered in World Wide Web-based courses delivered at three different educational institutions (i.e., two community colleges and a university) in the metropolitan Phoenix (Arizona) area. Implications are discussed based on distance education theories of interaction. Interaction is a vital issue to…

Medical and Psychosocial Problems in the Classroom: The Teacher's Role in Diagnosis and Management. Fifth Edition

ERIC Educational Resources Information Center

Haslam, Robert H. A., Ed.; Valletutti, Peter J., Ed.

2016-01-01

Now in its fifth edition, this outstanding resource for teachers and school professionals has been retitled "Medical and Psychosocial Problems in the Classroom" to more accurately reflect what teachers encounter during the course of their careers. Each chapter highlights the important role teachers play when interacting with health-care…

Little Reason for Being: A Case of School District Dissolution.

ERIC Educational Resources Information Center

Ellis, Pam

In 1980, Tonnelly Central School District became the first school district in New York State to be dissolved pursuant to Section 1505 of Education Law, marking the first use of dissolution and annexation as a means by which to address the programmatic and management problems encountered in the operation of a central school district. Problems faced…

First-Year Special Educators: The Influence of School and Classroom Context Factors on Their Accomplishments and Problems

ERIC Educational Resources Information Center

Griffin, Cynthia C.; Kilgore, Karen L.; Winn, Judith A.; Otis-Wilborn, Amy; Hou, Wei; Garvan, Cynthia W.

2009-01-01

Despite a history of research in general education on novice teachers, researchers have only recently begun to investigate the experiences of beginning special educators. Many of these studies describe problems encountered, noting the high attrition rate among beginning special education teachers and emphasizing the importance of keeping qualified…

Elementary Science and Technology Teachers' Views on Problems Encountered in the Instructional Process

ERIC Educational Resources Information Center

Gecer, Aynur; Ozel, Ruhan

2012-01-01

This research aims to explore the problems that teacher have experienced their opinion towards effectives and and functionality of teaching-learning process of Primary Science and Technology curriculum started to be implemented in 2004-2005 academic year in Turkey. The qualitative research design is used in this study. Research data are collected…

Learning to Solve Addition and Subtraction Word Problems in English as an Imported Language

ERIC Educational Resources Information Center

Verzosa, Debbie Bautista; Mulligan, Joanne

2013-01-01

This paper reports an intervention phase of a design study aimed to assist second-grade Filipino children in solving addition word problems in English, a language they primarily encounter only in school. With Filipino as the medium of instruction, an out-of-school pedagogical intervention providing linguistic and representational scaffolds was…

Planning pitfalls

Treesearch

James H. Freeman

1977-01-01

The subject this morning is planning and the problems peculiar to planning for management on public lands. As I am sure you know, we could devote entire seminars to problems encountered in planning. However, within the scope of the program today, we have the opportunity to touch briefly on some of the more important highlights of planning with the focus on major...

The Monte Carlo Method. Popular Lectures in Mathematics.

ERIC Educational Resources Information Center

Sobol', I. M.

The Monte Carlo Method is a method of approximately solving mathematical and physical problems by the simulation of random quantities. The principal goal of this booklet is to suggest to specialists in all areas that they will encounter problems which can be solved by the Monte Carlo Method. Part I of the booklet discusses the simulation of random…

New Technologies Upset the Political Communication Balance in the Third World.

ERIC Educational Resources Information Center

Oduko, Segun

This paper argues that new technologies, which play significant roles in the process of communication, may solve some problems, but they also tend to create new ones. A discussion of the various problems encountered in Nigeria, where an appreciable penetration of portable video cameras and recorders has given the public more access to, and choice…

Investigation of the Perceived Causes of Pre-Service Physics Teachers' Problems Encountered in School Experience

ERIC Educational Resources Information Center

Körhasan, Nilüfer Didis; Didis, M. Gözde

2015-01-01

This study investigates a group of pre-service physics teachers' perceptions about the causes of problems in school experience through the attribution theory. The participants were thirteen pre-service physics teachers from a public university in Turkey. Data were collected through the interviews by requesting the participants to reflect their own…

The Atomic Mass Unit, the Avogadro Constant, and the Mole: A Way to Understanding

ERIC Educational Resources Information Center

Baranski, Andrzej

2012-01-01

Numerous articles have been published that address problems encountered in teaching basic concepts of chemistry such as the atomic mass unit, Avogadro's number, and the mole. The origin of these problems is found in the concept definitions. If these definitions are adjusted for teaching purposes, understanding could be improved. In the present…

Separating the Problem and the Person: Insights from Narrative Therapy with People Who Stutter

ERIC Educational Resources Information Center

Ryan, Fiona; O'Dwyer, Mary; Leahy, Margaret M.

2015-01-01

Stuttering is a complex disorder of speech that encompasses motor speech and emotional and cognitive factors. The use of narrative therapy is described here, focusing on the stories that clients tell about the problems associated with stuttering that they have encountered in their lives. Narrative therapy uses these stories to understand, analyze,…

Coding "Corrective Recasts": The Maintenance of Meaning and More Fundamental Problems

ERIC Educational Resources Information Center

Hauser, Eric

2005-01-01

A fair amount of descriptive research in the field of second language acquisition has looked at the presence of what have been labeled corrective recasts. This research has relied on the methodological practice of coding to identify particular turns as "corrective recasts." Often, the coding criteria make use of the notion of the maintenance of…

Managing Asbestos in Place: A Building Owner's Guide to Operations and Maintenance Programs for Asbestos-Containing Materials.

ERIC Educational Resources Information Center

Environmental Protection Agency, Washington, DC.

Instructions for building owners on the selection and application of appropriate asbestos control and abatement actions are presented in this guidebook. Chapter 1 offers background information on the asbestos problem. Chapter 2 describes the purpose and scope of an operations and maintenance (O&M) program. The third chapter discusses planning…

Treatment Effects of a Modular Intervention for Early-Onset Child Behavior Problems on Family Contextual Outcomes

ERIC Educational Resources Information Center

Shaffer, Anne; Lindhiem, Oliver; Kolko, David J.

2013-01-01

The overall aim of this multi-informant study was to examine pre-post treatment changes, and maintenance at 3-year follow-up, for multiple dimensions of the family context, for a modular intervention that has previously demonstrated significant clinical improvements in child behavior and maintenance of these effects. Family outcomes included…

An Educational Program for Sub-Professional Personnel to be Employed in Health Maintenance Organizations. Final Report.

ERIC Educational Resources Information Center

HMO Management, Inc., Los Angeles, CA.

Through Medicaid, the Health Maintenance Organization Act (HMO), and Prepaid Health Programs (PHP) approaches were established whereby the government can help alleviate the medical problems of the needy. A program to educate and train students in California in the philosophy, administration, and development of PHP was developed in response to…

Metal with a memory provides useful tool for Skylab astronauts

NASA Technical Reports Server (NTRS)

Smith, G. A.

1975-01-01

Extendible booms used to convey film cassettes weighing 56.7 kg (125 lb) between the Airlock Module and the Apollo Telescope Mount are described along with the dispensing mechanism. Problems encountered with the mechanism during the test program are discussed. These problems were mainly associated with operation in cold temperature, lubrication, and the motor/gearhead assembly. Another set of problems which arose during crew training in the MSFC water tank is also discussed.

Look down from the Sky: Is It a Bird? Is It Superman? No, It's a Plane

ERIC Educational Resources Information Center

Chick, Helen

2016-01-01

The plane problem is a real-world problem, presented without any suggestion as to how it might be solved. It arose unexpectedly as the author was messing around on the internet, not thinking about maths at all. She did not encounter the problem in a maths lesson, nor as homework in the middle of a unit on a particular topic, and so she had no…

Analyses of Phase III Dynamic Buckling Tests. Final Report

DOT National Transportation Integrated Search

1990-02-01

Thermal buckling of railroad tracks in the lateral plane is an important problem in the design and maintenance of continuous welded rail (CWR) tracks. The problem is manifested through derailments which are attributable to track buckling, indicating ...