4,008 research outputs found

    Disease profiles of sheep and goats in two groups of villages in southwest Nigeria

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    Reports on 12-month observations on the animal health picture in West African Dwarf goats & sheep flocks in the villages of Badeku & Ipire in southwest Nigeria, detailing changes in morbidity & mortality following interventions to control peste des petits ruminants & sarcoptic mange, their major causes

    Design And Development Of Guardrail For Exclusive Motorcycle Lanes

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    The use of roadside barrier, especially W-beam guardrail has been demonstrated in various studies to have performed satisfactorily for protecting occupants of cars and trucks. However, its usage for motorcycle impact has been given little consideration. Thus, the safety of motorcyclists in relation to this barrier has become a major concern to road safety experts. Early studies have identified that motorcycle impact with this guardrail would result in severe injuries to the motorcyclists. However, relatively few studies have addressed the safety implication of this guardrail on motorcyclists. Presently, no studies have been reported to have specifically designed alternative guardrail for protecting motorcyclists especially along exclusive motorcycle lanes. In view of this problem, this study focuses on the design and development of safer guardrail system that can replace the existing W-beam guardrail being used along exclusive motorcycle lanes, as exists in Malaysia. This design required use of computer modelling and simulation as main tool and the conduct of a physical crash test to validate the baseline simulation model. Furthermore, the input parameters for the validated model were used for subsequent simulation of motorcycle crash on guardrail with 18 impact conditions. Results of this simulation were used to establish the design criteria. Based on the established design criteria alternative models were developed on the basis of achieving the design target; mainly to reduce potential injury risks to rider. The alternative models were combined to form 24 alternative models that were optimized in order to select the best model for the new guardrail design. The new guardrail design consists of metal plate (grade 13 steel) of 2.28 mm thick, wider and continuous surface that has a high degree of flexibility that enables soft redirection of the rider. It is also comparable to the existing guardrail in ease of construction and installation and can have a potential to utilize economical end-treatment techniques. The effectiveness of the new design was evaluated using the same computer simulation program – MADYMO. The outcome demonstrated that severity of head injury risk can be reduced significantly if impact of head to the ground can be prevented. The high flexibility of the new guardrail prevents the rider from having head impact with ground. Thus, the results show that HIC and head acceleration values could be reduced by 96% and 91% respectively for a typical crash scenario of 48km/h impact speed on the guardrail orientated at 45 degree and 4m post spacing. The major conclusions of the study are that modification of the configuration and material of the existing guardrail can significantly reduce potential injury risks to motorcyclists and that the new guardrail is safer to replace the existing guardrail along exclusive motorcycle lanes

    The edge of the periphery: situating the ≠Khomani San of the Southern Kalahari in the political economy of Southern Africa

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    This is an Accepted Manuscript of an article published by Taylor & Francis in African Identities on 14/04/16, available online: http://www.tandfonline.com/10.1080/14725843.2016.1154813In this article, we situate the Southern Kalahari San within the political economy of Southern Africa and within the world system. Here we draw on and critique modernization theory as a model of explanation for the lack of development found locally. In the Southern Kalahari, the ≠Khomani San won a massive land claim that should have empowered and enabled local development. Yet they remain largely impoverished, while seeking out a meaningful life on the edge of the capitalist world system. Within states, contradictions remain as local diversity continues to be reproduced and modernity itself is reproduced as local diversity. The research is premised on empirical fieldwork conducted in the Southern Kalahari in 2013 and supported by a series of earlier field research over the previous five years. The San of the Southern Kalahari are not resisting modernity but drawing on aspects of it selectively for their own vision of meaningful development

    An Assessment Of The Competitors' Strategies Of Global System Mobile (GSM) Communication For Service Providers In Nigeria

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    This study examines the Competitors’ Strategies of the five GSM Service providers in Nigeria. Survey questionnaire was administered to the stakeholders in order to collect the data .The purpose of this study is to identify those strategies employed by each network against its competitors and how those strategies succeeded in bringing about the realization of corporate objective, promotion, customers satisfaction and target market. We find that various strategies adopted by the GSM providers provide a significant influence on the promotions, corporate objectives, Target markets and customers satisfaction. In addition we find that there is need for GSM providers to involve in marketing research in order to create their own original promotional strategies (or products) instead of imitating or mimicking strategies by other network. Furthermore, the study recommends that they should continue to lay more emphasizes on the strategies for promotions, customer services, corporate objectives and the target market so as to achieve the organizational goa

    Knowledge and attitudes of dentists towards evidence-based dentistry in Lagos, Nigeria

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    Magister Scientiae Dentium - MSc(Dent)This was a cross-sectional study done in Lagos, Nigeria on 114 dentists. The aim of the study was to describe the knowledge and attitudes of dentists towards the concept of evidence-based dentistry (EBD). This study also attempted to create an awareness of this concept in the minds of previously uninformed dentists as well as demonstrate its need in continuous professional education via seminars, updates, lectures and short-term courses in Lagos, Nigeria.South Afric
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