1,321 research outputs found

    Improving the prospects for sustainable ICT projects in the developing world

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    Projects that bring information and communications technology (ICT) to the developing world -and especially to rural areas -have the potential to empower the disenfranchised, foster economic opportunity, and narrow the digital divide that threatens to widen global disparity between the haves and the have-nots. However, given the remarkable growth of such undertakings around the world, there has been little corresponding effort made to address the vital issues of long term project sustainability and the diverse motivations and incentives facing the actors involved. As a result, these projects continue to be implemented sporadically and in a piecemeal fashion, which in turn hinders our ability to define success and recommend best practices for implementing and/or scaling them. Through an analysis of public-private partnerships (PPPs), the prevailing vehicle for project implementation today, the article addresses the issue of sustainability through partnerships, and also asserts that developing world technology recipients must be considered as stakeholders, as they hold the key to project sustainability. Following an overview of both theory and the current state of ICT-related development projects, the article provides a case study of a Sri Lankan-based pilot project involving multiple stakeholders. This case reveals important success factors that can be applied to future developing world ICT projects

    Kink Localization under Asymmetric Double-Well Potential

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    We study diffuse phase interfaces under asymmetric double-well potential energies with degenerate minima and demonstrate that the limiting sharp profile, for small interface energy cost, on a finite space interval is in general not symmetric and its position depends exclusively on the second derivatives of the potential energy at the two minima (phases). We discuss an application of the general result to porous media in the regime of solid-fluid segregation under an applied pressure and describe the interface between a fluid-rich and a fluid-poor phase. Asymmetric double-well potential energies are also relevant in a very different field of physics as that of Brownian motors. An intriguing analogy between our result and the direction of the dc soliton current in asymmetric substrate driven Brownian motors is pointed out

    Is homonationalism influencing public opinion? Experimental and survey evidence from the UK and Romania

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    Homonationalism is a proposed value configuration that promotes both accepting gay people and prejudice towards immigrants and ethnic minorities. This value configuration contrasts with the widely supported theory that all prejudices are positively related, and are explained by underlying causes such as authoritarianism. Although homonationalism has received attention in qualitative research on mass-media and political discourse, this is the first quantitative exploration of the concept. We used data from a society likely to be high on homonationalism (UK), and one likely to be low (Romania). None of our results were consistent with homonationalism, either in an experiment conducted with students (Study 1, N = 110), or in a secondary analysis of data from the same two countries (Study 2, N = 2638). Ethnic prejudice and homophobia were positively related, while homonationalism was negatively related to homophobia and authoritarianism. Homonationalism has little utility as a construct for understanding public opinion at this point in time, and research investigating it at other levels of analysis may be more fruitful

    A Longitudinal Examination of the Hopelessness Theory of Depression in People Who Have Multiple Sclerosis.

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    PURPOSE: Hopelessness theory predicts that negative attributional style will interact with negative life events over time to predict depression. The intention of this study was to test this in a population who are at greater risk of negative life events, people with Multiple Sclerosis (MS). METHOD: Data, including measures of attributional style, negative life events, and depressive symptoms, were collected via postal survey in 3 phases, each one a year apart. RESULTS: Responses were received from over 380 participants at each study phase. Negative attributional style was consistently able to predict future depressive symptoms at low to moderate levels of association; however, this ability was not sustained when depressive symptoms at Phase 1 were controlled for. No substantial evidence to support the hypothesised interaction of negative attributional style and negative life events was found. CONCLUSIONS: Findings were not supportive of the causal interaction proposed by the hopelessness theory of depression. Further work considering other time frames, using methods to prime attributional style before assessment and specifically assessing the hopelessness subtype of depression, may prove to be more fruitful. Intervention directly to address attributional style should also be considered

    A Longitudinal Examination of the Hopelessness Theory of Depression in People Who Have Multiple Sclerosis.

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    PURPOSE: Hopelessness theory predicts that negative attributional style will interact with negative life events over time to predict depression. The intention of this study was to test this in a population who are at greater risk of negative life events, people with Multiple Sclerosis (MS). METHOD: Data, including measures of attributional style, negative life events, and depressive symptoms, were collected via postal survey in 3 phases, each one a year apart. RESULTS: Responses were received from over 380 participants at each study phase. Negative attributional style was consistently able to predict future depressive symptoms at low to moderate levels of association; however, this ability was not sustained when depressive symptoms at Phase 1 were controlled for. No substantial evidence to support the hypothesised interaction of negative attributional style and negative life events was found. CONCLUSIONS: Findings were not supportive of the causal interaction proposed by the hopelessness theory of depression. Further work considering other time frames, using methods to prime attributional style before assessment and specifically assessing the hopelessness subtype of depression, may prove to be more fruitful. Intervention directly to address attributional style should also be considered

    Book Reviews

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    Reviews of the following books: Uncollected Short Stories of Sarah Orne Jewett edited by Richard Cary; The Care of Historical Collections: A Conservation Handbook for the Non-Specialist by Per E. Guldbeck; Cushing’s Island: Two Memoirs by Robert and Agnes Hale; The History of Fort Halifax by Carleton E. Fishe

    Effects of pumping on entomopathogenic nematodes and temperature increase within a spray system

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    Exposure to hydrodynamic stresses and increased temperature during hydraulic agitation within a spray system could cause permanent damage to biological pesticides during spray application. Damage to a benchmark biopesticide, entomopathogenic nematodes (EPNs), was measured after a single passage through three different pump types (centrifugal, diaphragm, and roller) at operating pressures up to 828 kPa. No mechanical damage to the EPNs due to passage through the pumps was observed. Separate tests evaluated the effect of pump recirculation on temperature increase of water within a laboratory spray system (56.8-L spray tank) and a conventional-scale spray system (1136-L spray tank). A constant volume of water (45.4 L) was recirculated through each pump at 15.1 L/min within the laboratory spray system. After 2 h, the temperature increase for the centrifugal pump was 33.6 degrees C, and for the diaphragm and roller pumps was 8.5 degrees C and 11.2 degrees C, respectively. The centrifugal pump was also evaluated within the conventional spray system, under both a constant (757 L) and reducing volume scenario, resulting in an average temperature increase of 3.2 degrees C and 6.5 degrees C, respectively, during the 3-h test period. When comparing the number of recirculations for each test, the rate of temperature increase was the same for the conventional spray, system (for both the constant and reducing volume scenarios), while for the laboratory spray system the temperature increased at a greater rate, suggesting that the volume capacity of the spray tank is the primary factor influencing the temperature increase. Results from this study indicate that thermal influences during pump recirculation could be more detrimental to EPNs than mechanical stress. Results show that extensive recirculation of the tank mix can cause considerable increases in the liquid temperature. Diaphragm and roller pumps (low-capacity pumps) are better suited for use with biopesticides compared to the centrifugal pump, which was found to contribute significant heat to the spray system

    Determinants In HIV Counselling And Testing In Couples In North Rift Kenya

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    Background: Voluntary HIV counselling and testing (VCT) has been shown to be an acceptable and effective tool in the fight against HIV/AIDS. Couple HIV Counselling and Testing (CHCT) however, is a relatively new concept whose acceptance and efficacy is yet to be determined.Objective: To describe factors that motivate couples to attend VCT as a couple. Design: A cross sectional qualitative study.Setting: Moi Teaching and Referral Hospital and Moi University, School of Medicine, Eldoret, KenyaSubjects: Seventy one individuals were interviewed during KII (9) and dyad interviews (31 couples). Ten FGDs involving a total of 109 individuals were held. Results: Cultural practices, lack of CHCT awareness, stigma and fear of results deter CHCT utilisation. Location of centre where it is unlikely to be associated with HIV testing, qualified professional staff and minimal waiting times would enhance CHCT utilisation.Conclusions: CHCT as a tool in the fight against HIV/AIDS in this region of Kenya is feasible as the factors that would deter couples are not insurmountable

    Stakeholders perception of HIV sero-discordant couples in western Kenya

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    Objective: To describe the perceptions of key stakeholders regarding the counselling needs of HI V sero-discordant couples as part of preparation for a clinical trial involving HIV sero-discordant couples. Design: Qualitative study using key informant and couple interviews. Setting: Moi Teaching and Referral Hospital (MTRH). Subjects: A purposive sample of nine key informants and 31 couple interviews totaling 71 participants. The couple interviews consisted of HI V untested, HI V concordant (positive and negative) and discordant couples. Results: Seventy one individuals participated in nine key informant and 31 couple interviews. The responses identified the following as key issues in counselling HIV discordant couples: The need for education on the meaning of HI V sero-discordancy including potential sources of infection; assistance in disclosing HIV test results to one\'s partner; discussion of the stigma surrounding formula feeding. Overall, the participants supported safer sexual practices in discordant partnerships. Conclusions: Psychosocial support of HI V sero-discordant couples should include messages about the meaning, mechanisms and implications of sero-discordancy. Culturally appropriate HI Vdisclosure and safer sex messages are also needed to support these partnerships. East African Medical Journal Vol. 85 (7) 2008: pp. 326-33
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