445 research outputs found
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E-learning adoption in higher education in Jordan: vision, reality and change
This paper discusses the implementation of an e-learning program at a Jordanian University (Al-Ahliyya Amman University). The program originally aimed to establish a virtual university which offers totally online courses but due to a number of reasons there had to be some changes in the implementation process. The paper discusses such changes and challenges faced by AAU in implementing its e-learning program from an IS project management point of view. Findings suggest that implementing such projects needs careful consideration of a variety of issues to ensure that the objectives are achieved. The case provides rich insights to other educational institutions wishing to implement such projects
Home-school relationships: a school management perspective
Abu Dhabi, United Arab Emirates (UAE) is in the process of initiating major education reform designed to improve schools. Parental involvement in support of student learning ranks high on the reform agenda. This study explores managerial aspects of implementing home-school relationships in seven primary Public Private Partnership (PPP) schools in Abu Dhabi, UAE. Participants involved in this study were principals, social workers, teachers, parents and students. Managerial aspects discussed in this paper relate to: a) benefits of home-school relationships; b) roles and responsibilities of stakeholders; c) home-school communication; and d) constraints and challenges faced in the management of home-school relationships. The findings elicit recommendations for improvement which may inform the work of policy makers, principals, social workers, teachers and parents in their continued efforts to build home-school relationships
Constraints and subsequent limitations to parental involvement in primary schools in Abu Dhabi: stakeholders' perspective
The United Arab Emirates (UAE) is developing its public schools by initiating reform agendas for school improvement. High on the list of reforms is the call to increase parental involvement in schools. For this reform to work successfully, it is important to identify and examine the constraints and subsequent limitations that exist. Seven primary Public, Private Partnership schools (PPP) in Abu Dhabi were the focus of this qualitative case study. Participants were school stakeholders: school administrators, social workers, teachers and parents. The findings will assist in developing continuing policies and practices which take these limitations into account and work to mitigate them. Recommendations are made based within the context of the findings
Hepatitis B surface antigen in urine of hemodialysis patients
Hepatitis B surface antigen in urine of hemodialysis patients. As part of an extensive epidemiological survey of chronic hemodialysis patients in Michigan, hepatitis B surface antigen (HBsAg) was identified in the sera of 79 of 701 (11%) patients. Of these patients, 59 were carriers of HBsAg for three or more months. Urine samples were collected from 36 of 39 HBsAg carriers having urinary output. Of these samples, 19 (52%) were positive for HBsAg by radioimmunoassay; this was confirmed by specific antibody neutralization. The HBsAg was not identified in the urine of seven hemodialysis patients who were lacking serum HBsAg or in urine samples from three HBsAg sero-carriers who had normal renal function. Patients undergoing maintenance hemodialysis appear to constitute a large reservoir of HBsAg chronic carriers. This study indicates that a minimum of 50% of persistent HBsAg carriers who are producing urine have detectable. HBsAg in single, randomly timed, unconcentrated urine specimen. These data suggest that urine may represent a potential vehicle for transmission in nonparenterally acquired hepatitis B.Antigène de surface de l'hépatite B dans l'urine de malades en hémodialyse. Dans le cadre d'une large enquête épidémiologique à propos des malades en hémodialyse chronique dans le Michigan, l'antigène de surface de l'hépatite B (HBsAg) a été identifié dans le sérum de 79 parmi 701 malades (11%). Parmi ces malades, 59 étaient des porteurs de HBsAg depuis 3 mois ou plus. L'urine de 36 des 39 porteurs de HBsAg, qui avaient une diurèse, a été recueillie. Parmi ces 36 urines, 19 (52%) sont positives pour HBsAg par radio-immunologie, ce qui est confirmé par la neutralisation au moyen d'anticorps spécifique. Le HBsAg n'apas été identifié dans l'urine de 7 malades en hémodialyse qui n'avaient pas le HBsAg sérique et dans l'urine de 3 porteurs de HBsAg dont les fonctions rénales étaient normales. Les malades soumis à l'hémodialyse itérative paraissent constituer un grand réservoir de porteurs chroniques de HBsAg. Cette étude indique qu'au minimum 50% des porteurs chroniques de HBsAg qui ont une diurèse, ont un HBsAg détectable dans un échantillon unique d'urine, prélevé au hasard, non concentré. Ces résultats suggèrent que l'urine peut être un véhicule de transmission de l'hépatite B acquise par voie non parentérale
Emotional Impairment and Persistent Upregulation of mGlu5 Receptor following Morphine Abstinence: Implications of an mGlu5-MOPr Interaction.
BACKGROUND: A difficult problem in treating opioid addicts is the maintenance of a drug-free state because of the negative emotional symptoms associated with withdrawal, which may trigger relapse. Several lines of evidence suggest a role for the metabotropic glutamate receptor 5 in opioid addiction; however, its involvement during opioid withdrawal is not clear. METHODS: Mice were treated with a 7-day escalating-dose morphine administration paradigm. Following withdrawal, the development of affective behaviors was assessed using the 3-chambered box, open-field, elevated plus-maze and forced-swim tests. Metabotropic glutamate receptor 5 autoradiographic binding was performed in mouse brains undergoing chronic morphine treatment and 7 days withdrawal. Moreover, since there is evidence showing direct effects of opioid drugs on the metabotropic glutamate receptor 5 system, the presence of an metabotropic glutamate receptor 5/μ-opioid receptor interaction was assessed by performing metabotropic glutamate receptor 5 autoradiographic binding in brains of mice lacking the μ-opioid receptor gene. RESULTS: Withdrawal from chronic morphine administration induced anxiety-like, depressive-like, and impaired sociability behaviors concomitant with a marked upregulation of metabotropic glutamate receptor 5 binding. Administration of the metabotropic glutamate receptor 5 antagonist, 3-((2-Methyl-4-thiazolyl)ethynyl)pyridine, reversed morphine abstinence-induced depressive-like behaviors. A brain region-specific increase in metabotropic glutamate receptor 5 binding was observed in the nucleus accumbens shell, thalamus, hypothalamus, and amygdala of μ-opioid receptor knockout mice compared with controls. CONCLUSIONS: These results suggest an association between metabotropic glutamate receptor 5 alterations and the emergence of opioid withdrawal-related affective behaviors. This study supports metabotropic glutamate receptor 5 system as a target for the development of pharmacotherapies for the treatment of opioid addiction. Moreover, our data show direct effects of μ-opioid receptor system manipulation on metabotropic glutamate receptor 5 binding in the brain
A Survey of Air-to-Ground Propagation Channel Modeling for Unmanned Aerial Vehicles
In recent years, there has been a dramatic increase in the use of unmanned
aerial vehicles (UAVs), particularly for small UAVs, due to their affordable
prices, ease of availability, and ease of operability. Existing and future
applications of UAVs include remote surveillance and monitoring, relief
operations, package delivery, and communication backhaul infrastructure.
Additionally, UAVs are envisioned as an important component of 5G wireless
technology and beyond. The unique application scenarios for UAVs necessitate
accurate air-to-ground (AG) propagation channel models for designing and
evaluating UAV communication links for control/non-payload as well as payload
data transmissions. These AG propagation models have not been investigated in
detail when compared to terrestrial propagation models. In this paper, a
comprehensive survey is provided on available AG channel measurement campaigns,
large and small scale fading channel models, their limitations, and future
research directions for UAV communication scenarios
Mapping research activity on mental health disorders in Europe: Study protocol for the Mapping_NCD project
© 2016 The Author(s). Background: Mental health disorders (MHDs) constitute a large and growing disease burden in Europe, although they typically receive less attention and research funding than other non-communicable diseases (NCDs). This study protocol describes a methodology for the mapping of MHD research in Europe as part of Mapping_NCD, a 2-year project funded by the European Commission which seeks to map European research funding and impact for five NCDs in order to identify potential gaps, overlaps, synergies and opportunities, and to develop evidence-based policies for future research. Methods: The project aims to develop a multi-focal view of the MHD research landscape across the 28 European Union Member States, plus Iceland, Norway and Switzerland, through a survey of European funding entities, analysis of research initiatives undertaken in the public, voluntary/not-for-profit and commercial sectors, and expert interviews to contextualize the gathered data. The impact of MHD research will be explored using bibliometric analyses of scientific publications, clinical guidelines and newspaper stories reporting on research initiatives. Finally, these research inputs and outputs will be considered in light of various metrics that have been proposed to inform priorities for the allocation of research funds, including burden of disease, treatment gaps and cost of illness. Discussion: Given the growing burden of MHDs, a clear and broad view of the current state of MHD research is needed to ensure that limited resources are directed to evidence-based priority areas. MHDs pose a particular challenge in mapping the research landscape due to their complex nature, high co-morbidity and varying diagnostic criteria. Undertaking such an effort across 31 countries is further challenged by differences in data collection, healthcare systems, reimbursement rates and clinical practices, as well as cultural and socioeconomic diversity. Using multiple methods to explore the spectrum of MHD research funding activity across Europe, this project aims to develop a broad, high-level perspective to inform priority setting for future research
The good Arab:Conditional inclusion and settler colonial citizenship among Palestinian citizens of Israel in Jewish Tel Aviv
The puzzle of self-reported weight gain in a month of fasting (Ramadan) among a cohort of Saudi families in Jeddah, Western Saudi Arabia
<p>Abstract</p> <p>Background</p> <p>During Ramadan fast, approximately one billion Muslims abstain from food and fluid between the hours of sunrise to sunset, and usually eat a large meal after sunset and another meal before sunrise. Many studies reported good health-related outcomes of fasting including weight loss. The objective of this study is to identify the local pattern of expenditure on food consumption, dietary habits during Ramadan and correlate that to self-reported weight gain after Ramadan in a group of families in Jeddah, Western Saudi Arabia.</p> <p>Methods</p> <p>A Cross-section study using a pre-designed questionnaire to identify the local pattern of expenditure on food consumption, dietary habits during Ramadan and correlate that to self-reported weight gain after Ramadan in a representative cohort of Saudis living in Jeddah. It was piloted on 173 nutrition students and administered by them to their families.</p> <p>Results</p> <p>A total of 173 Saudi families were interviewed. One out of 5 indicated that their expenditure increases during Ramadan. Approximately two thirds of the respondents (59.5%) reported weight gain after Ramadan. When asked about their perspective explanations for that: 40% attributed that to types of foods being rich in fat and carbohydrates particularly date in (Sunset meal) 97.7% and rice in (Dawn meal) 80.9%. One third (31.2%) indicated that it was due to relative lack of physical exercise in Ramadan and 14.5% referred that to increase in food consumption. Two thirds (65.2%) of those with increased expenditure reported weight gain.</p> <p>Conclusion</p> <p>Surprisingly weight gain and not weight loss was reported after Ramadan by Saudis which indicates timely needed life-style and dietary modification programs for a population which reports one of the highest prevalence rates of diabetes.</p
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