146 research outputs found

    Synthesis and characterization of poly(amide-sulfonamides)

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    Nine novel poly (amide-sulfonamides) having general structures 1-3 shown below, have been prepared utilizing low temperature solution polymerization. Variously substituted dianilines containing preformed sulfonamide linkages have been reacted with terephthaloyl chloride, isophthaloyl chloride and sebacyl chloride to yield polymer structures 1, 2 and 3 respectively

    USE OF CLIENT-BASED PROJECTS IN BUSINESS EDUCATION: A COMPARISON OF UNDERGRADUATE AND GRADUATE PEDAGOGY

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    This paper reports the results of a comparative qualitative study of pedagogical approaches in applied learning in business education. The comparison consisted of dissecting the practice of embedding client-based projects in both undergraduate and graduate business education at a liberal arts university. Client-based projects allow students to go beyond the concepts discussed in the classroom and to engage in problem-solving activities related to discipline content areas. These client-based projects take a number of forms: they may be individualistic or group-based; they may be developed by the professor or involve working for real organizations; or they may be specific in nature or integrate all of the relevant course materials. The underpinning of each of the two courses\u27 marketing planning projects is the iterative approach to student learning where students are expected to revise and resubmit their work until they have met the professors\u27 expectations as set forth in the course

    Cohort profile: mental health following extreme trauma in a northern Ugandan cohort of War-Affected Youth Study (The WAYS Study).

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    War experiences are associated with the risk of long-term mental health problems. The War-affected Youths (WAYS) Study comprises a cohort of 539 youths (61% female) aged between 18 to 25 (at baseline) randomly sampled from the population of war-affected youths in northern Uganda. The study aims to chart the trajectory of long-term mental health consequences of war and the roles of individual, family, and community contextual risk and protective factors in influencing the course of mental health using Social Ecology Model, thus, addressing both the individual and its social ecology. Knowledge of postwar contexts may inform policy and guide interventions on postwar psychosocial adjustment and reintegration in conflict-prone Great Lakes region of Africa (Rwanda, Burundi, DR Congo, Uganda, Central African Republic, and South Sudan). Two waves of data collection have been conducted and more data collection is planned. At baseline, information on demographic characteristics, pre-war experiences, psychosocial outcomes, coping, stigma/discrimination, family and community acceptance and relationship, family functioning, and post-war experiences were obtained. At follow-up, information on general health, gender-based violence, PTSD, social skills, trauma memory quality, rumination, self-esteem, and psychosocial outcomes were collected. Approval to access the data can be obtained on application to the Principal Investigator upon submission of a research proposal with ethical approval from the applicant's institution. This research is funded by Wellcome Trust and Gulu University.RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are

    A Fully Quantum Mechanical Model of a SQUID Ring Coupled to an Electromagnetic Field

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    A quantum system comprising of a monochromatic electromagnetic field coupled to a SQUID ring with sinusoidal non-linearity, is studied. A magnetostatic flux Φx\Phi_{x} is also threading the SQUID ring, and is used to control the coupling between the two systems. It is shown that for special values of Φx\Phi_{x} the system is strongly coupled. The time evolution of the system is studied. It is shown that exchange of energy takes place between the two modes and that the system becomes entangled. A second quasi-classical model that treats the electromagnetic field classically is also studied. A comparison between the fully quantum mechanical model with the electromagnetic field initially in a coherent state and the quasi-classical model, is made.Comment: 7 pages, 9 figures. Uploaded as implementing a policy of arXiving old paper

    Quantum Statistics and Entanglement of Two Electromagnetic Field Modes Coupled via a Mesoscopic SQUID Ring

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    In this paper we investigate the behaviour of a fully quantum mechanical system consisting of a mesoscopic SQUID ring coupled to one or two electromagnetic field modes. We show that we can use a static magnetic flux threading the SQUID ring to control the transfer of energy, the entanglement and the statistical properties of the fields coupled to the ring. We also demonstrate that at, and around, certain values of static flux the effective coupling between the components of the system is large. The position of these regions in static flux is dependent on the energy level structure of the ring and the relative field mode frequencies, In these regions we find that the entanglement of states in the coupled system, and the energy transfer between its components, is strong.Comment: 15 pages, 19 figures, Uploaded as implementing a policy of arXiving old paper

    Managing Ebola from rural to urban slum settings: experiences from Uganda.

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    Managing Ebola in Uganda.Five outbreaks of ebola occurred in Uganda between 2000-2012. The outbreaks were quickly contained in rural areas. However, the Gulu outbreak in 2000 was the largest and complex due to insurgency. It invaded Gulu municipality and the slum- like camps of the internally displaced persons (IDPs). The Bundigugyo district outbreak followed but was detected late as a new virus. The subsequent outbreaks in the districts of Luwero district (2011, 2012) and Kibaale (2012) were limited to rural areas

    Poor follow-up rates at a self-pay northern Indian tertiary AIDS clinic

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    <p>Abstract</p> <p>Background</p> <p>In many developing countries, out-of-pocket payment remains a primary mechanism by which patients infected with HIV access treatment. In India, this has been changing as the National AIDS Control Organization (NACO) has been rolling out free antiretroviral therapy throughout the country since 2004. The vast majority of patients, however, remain without access to free medicines.</p> <p>Methods</p> <p>A retrospective chart review was performed on data obtained from a registry of ninety-three (93) patients attending a self-pay clinic at the All India Institute of Medical Sciences in Delhi, India. Multivariable Cox proportional hazard and logistic regression models were explored to assess the relationship between lost-to-follow-up status and the predictor variables: age, sex, household income, baseline CD4 count, and distance from clinic.</p> <p>Results</p> <p>Lost-to-follow-up rates were very high; 68% (63/93) were lost-to-follow-up till the time of chart review, including 59% (55/93) who were lost within one year. In both regression models, younger age, low baseline CD4 counts, and low income level were significantly associated with increased risk of lost-to-follow-up. Additionally, there was a significant interaction between income and CD4 counts. The patients with both low CD4 counts and low income level were more likely to be lost-to-follow-up than would be predicted by each covariable alone.</p> <p>Conclusion</p> <p>In this small cohort of AIDS patients attending a self-pay antiretroviral clinic at a large tertiary care center in Delhi, India, follow-up rates were quite poor. Poorer patients tended to present to clinic with more depressed CD4 counts and were less likely to be retained in care. These findings indicate that greater strides must be taken to improve the recruitment and retention of poor patients. The expansion of free antiretrovirals is one step among many necessary to achieve this objective.</p

    An assessment of opportunities and challenges for public sector involvement in the maternal health voucher program in Uganda

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    This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Background: Continued inequities in coverage, low quality of care, and high out-of-pocket expenses for health services threaten attainment of Millennium Development Goals 4 and 5 in many sub-Saharan African countries. Existing health systems largely rely on input-based supply mechanisms that have a poor track record meeting the reproductive health needs of low-income and underserved segments of national populations. As a result, there is increased interest in and experimentation with results-based mechanisms like supply-side performance incentives to providers and demand-side vouchers that place purchasing power in the hands of low-income consumers to improve uptake of facility services and reduce the burden of out-of-pocket expenditures. This paper describes a reproductive health voucher program that contracts private facilities in Uganda and explores the policy and implementation issues associated with expansion of the program to include public sector facilities. Methods: Data presented here describes the results of interviews of six district health officers and four health facility managers purposefully selected from seven districts with the voucher program in southwestern Uganda. Interviews were transcribed and organized thematically, barriers to seeking RH care were identified, and how to address the barriers in a context where voucher coverage is incomplete as well as opportunities and challenges for expanding the program by involving public sector facilities were investigated. Results: The findings show that access to sexual and reproductive health services in southwestern Uganda is constrained by both facility and individual level factors which can be addressed by inclusion of the public facilities in the program. This will widen the geographical reach of facilities for potential clients, effectively addressing distance related barriers to access of health care services. Further, intensifying ongoing health education, continuous monitoring and evaluation, and integrating the voucher program with other services is likely to address some of the barriers. The public sector facilities were also seen as being well positioned to provide voucher services because of their countrywide reach, enhanced infrastructure, and referral networks. The voucher program also has the potential to address public sector constraints such as understaffing and supply shortages.Conclusions: Accrediting public facilities has the potential to increase voucher program coverage by reaching a wider pool of poor mothers, shortening distance to service, strengthening linkages between public and private sectors through public-private partnerships and referral systems as well as ensuring the awareness and buy-in of policy makers, which is crucial for mobilization of resources to support the sustainability of the programs. Specifically, identifying policy champions and consulting with key policy sectors is key to the successful inclusion of the public sector into the voucher program
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