231 research outputs found

    Oseltamivir-Resistant Influenza A Pandemic (H1N1) 2009 Virus, Hong Kong, China

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    Resistance to oseltamivir was observed in influenza A pandemic (H1N1) 2009 virus isolated from an untreated person in Hong Kong, China. Investigations showed a resistant virus with the neuraminidase (NA) 274Y genotype in quasi-species from a nasopharyngeal aspirate. Monitoring for the naturally occurring NA 274Y mutation in this virus is necessary

    Epistemic and social scripts in computer-supported collaborative learning

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    Collaborative learning in computer-supported learning environments typically means that learners work on tasks together, discussing their individual perspectives via text-based media or videoconferencing, and consequently acquire knowledge. Collaborative learning, however, is often sub-optimal with respect to how learners work on the concepts that are supposed to be learned and how learners interact with each other. One possibility to improve collaborative learning environments is to conceptualize epistemic scripts, which specify how learners work on a given task, and social scripts, which structure how learners interact with each other. In this contribution, two studies will be reported that investigated the effects of epistemic and social scripts in a text-based computer-supported learning environment and in a videoconferencing learning environment in order to foster the individual acquisition of knowledge. In each study the factors ‘epistemic script’ and ‘social script’ have been independently varied in a 2×2-factorial design. 182 university students of Educational Science participated in these two studies. Results of both studies show that social scripts can be substantially beneficial with respect to the individual acquisition of knowledge, whereas epistemic scripts apparently do not to lead to the expected effects

    Comparison of some Reduced Representation Approximations

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    In the field of numerical approximation, specialists considering highly complex problems have recently proposed various ways to simplify their underlying problems. In this field, depending on the problem they were tackling and the community that are at work, different approaches have been developed with some success and have even gained some maturity, the applications can now be applied to information analysis or for numerical simulation of PDE's. At this point, a crossed analysis and effort for understanding the similarities and the differences between these approaches that found their starting points in different backgrounds is of interest. It is the purpose of this paper to contribute to this effort by comparing some constructive reduced representations of complex functions. We present here in full details the Adaptive Cross Approximation (ACA) and the Empirical Interpolation Method (EIM) together with other approaches that enter in the same category

    A Gestão Estratégica dos Recursos Humanos nas Autarquias Locais: estudo de caso na Câmara Municipal de Cantanhede

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    Os Recursos Humanos são fundamentais para o prosseguimento da missão e dos objetivos de qualquer organização. A Gestão Estratégica dos Recursos Humanos, permite que uma organização alcance os seus objetivos, através do aumento da probabilidade de realização dos mesmos. Esta lógica de Gestão dos Recursos Humanos, revela-se como uma promessa explícita de eficácia organizacional, que pode ser alcançada pelo desenvolvimento do conjunto de práticas de RH internamente consistentes e adequadas aos contextos organizacionais. O concretizar de uma Gestão Estratégica dos Recursos Humanos nas organizações da Administração Pública, considerando a complexidade humana e o valor inerente, é uma via para o desenvolvimento a todos os níveis. Nas Câmaras Municipais, enquanto órgãos executivos de uma das formas de Autarquias Locais que é o Município, a Gestão Estratégica dos Recursos Humanos torna-se um investimento necessário para a melhoria contínua na prestação de serviços públicos. Isso, tendo em conta que a descentralização de competências da Administração Pública Central, para as Autarquias Locais, acarreta um aumento de responsabilidades e requer maior capacidade de resposta às demandas sociais. É no contexto da Administração Pública, em particular das Autarquias Locais, que se realiza o estudo de caso na Câmara Municipal de Cantanhede. O objetivo desta investigação é compreender a dinâmica do sector dos Recursos Humanos nas Autarquias Locais, sob a perspetiva da Gestão Estratégica dos Recursos Humanos, e perceber a importância que esta tem no desempenho global dessas organizações. O tipo de pesquisa que se materializa é qualitativo e exploratório, com a realização de observação direta, análise documental e entrevistas semiestruturadas. Verifica-se com este estudo, que é preocupação da Câmara Municipal de Cantanhede e do sector dos Recursos Humanos, desenvolver procedimentos estratégicos de Gestão dos Recursos Humanos. Apesar de ser um processo limitado pelos problemas relativos à atualização das carreiras, baixa remuneração, ausência de compensações e prémio de desempenho. Para que a Gestão Estratégica dos Recursos Humanos tenha efetivamente campo de ação, é preciso que a Gestão dos Recursos Humanos seja desmistificada enquanto conceito e experienciada de forma expressiva nas Autarquias Locais, em conjunto com o reforço da autonomia dessas organizações. / Human Resources are fundamental for the pursuit of the mission and goals of any organization. The Strategic Management of Human Resources allows an organization to achieve its objectives by increasing the probability of achieving them. This Human Resource Management logic is an explicit promise of organizational effectiveness that can be achieved by developing a set of HR practices that are internally consistent and appropriate to organizational contexts. The realization of a Strategic Management of Human Resources in Public Administration organizations, considering the human complexity and the inherent value, is a way for development at all levels. In the Municipal Councils, as an executive bodies of one of the forms of Local Authorities that is the Municipality, the Strategic Management of Human Resources becomes a necessary investment for the continuous improvement in the provision of public services. This, taking into account that the decentralization of competences of the Central Public Administration, for Local Authorities, entails an increase in responsibilities and requires greater capacity to respond to social demands. It is in the context of the Public Administration, in particular the Local Authorities, that the case study is carried out in Cantanhede Town Hall. The objective of this research is to understand the dynamics of the Human Resources sector in Local Authorities, from the perspective of the Strategic Management of Human Resources, and realize the importance it has in the overall performance of these organizations. The type of research that materializes is qualitative and exploratory, with direct observation, documental analysis and semi-structured interviews. It is verified with this study, that is concern of the Cantanhede Town Hall and of the Human Resources sector to develop strategic human resources management procedures. Although it is a process limited by the problems related to the updating of the careers, low remuneration, absence of compensations and performance bonus. In order for the Strategic Management of Human Resources to have an effective field of action, it is necessary that the Human Resources Management be demystified as a concept and experienced in an expressive way in Local Authorities, together with the reinforcement of the autonomy of these organizations

    Ion radial transport induced by ICRF waves in tokamaks

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    The wave-induced fluxes of energetic-trapped ions during ICRF heating of tokamak plasmas are calculated using quasilinear equations. A simple single particle model of this transport mechanism is also given. Both a convective flux proportional to k/sub phi/vertical bar E/sub +/vertical bar/sup 2/ and a diffusive flux proportional to k/sub phi//sup 2/vertical bar E/sub +/vertical bar/sup 2/ are found. Here, k/sub phi/ is the toroidal wave number and E/sub +/ is the left-hand polarized wave field. The convective flux may become significant for large k/sub phi/ if the wave spectrum is asymmetric in k/sub phi/. But for the conditions of most previous experiments, these calculations indicate that radial transport driven directly by the ICRF wave is unimportant

    Weighted needle pinprick sensory thresholds: a simple test of sensory function in diabetic peripheral neuropathy

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    A simple device is described, consisting of 12 weighted 23 gauge disposable needles (0.2 to 5.2 g), for testing sensation in busy diabetic clinics. The pinprick sensory threshold (PPT) is the lightest weighted needle which consistently elicits a sharp sensation. The subjects were 48 healthy controls (hospital staff), 44 diabetic patients without neuropathic symptoms, and 35 diabetic patients with chronic painful neuropathy. In the controls, the mean PPT from the right hand and foot obtained on two test occasions a week apart did not differ significantly. In diabetic patients without symptomatic neuropathy, the mean PPT in the right hand and right foot were significantly higher than in the controls. The diabetic patients with painful neuropathy had clearly increased mean PPT in the right hand and foot compared with controls. Marstock thermal limen in diabetic patients with painful neuropathy correlated significantly with PPT determinations. PPT and thermal thresholds probably give comparable information on small fibre dysfunction in diabetic patients with symptomatic neuropathy. Compared with thermal threshold determinations however, the weighted needle apparatus is inexpensive, simple, and rapid to use

    The Sudbury Neutrino Observatory

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    The Sudbury Neutrino Observatory is a second generation water Cherenkov detector designed to determine whether the currently observed solar neutrino deficit is a result of neutrino oscillations. The detector is unique in its use of D2O as a detection medium, permitting it to make a solar model-independent test of the neutrino oscillation hypothesis by comparison of the charged- and neutral-current interaction rates. In this paper the physical properties, construction, and preliminary operation of the Sudbury Neutrino Observatory are described. Data and predicted operating parameters are provided whenever possible.Comment: 58 pages, 12 figures, submitted to Nucl. Inst. Meth. Uses elsart and epsf style files. For additional information about SNO see http://www.sno.phy.queensu.ca . This version has some new reference
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