1,122 research outputs found

    The competitiveness of logistics service providers : an investigation in China and the UK

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    Abstract unavailable please refer to PD

    Testing the Universal Structured Jet Models of Gamma-Ray Bursts by BATSE Observations

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    Assuming that the observed gamma-ray burst (GRB) rate as a function of redshift is proportional to a corrected star formation rate, we derive the empirical distribution of the viewing angles of long BATSE GRBs, Pem(θ)P^{\rm em}(\theta), and the distribution of these bursts in the plane of θ\theta against redshift, Pem(θ,z)P^{\rm em}(\theta, z), by using a tight correlation between EγE_{\gamma}) and EpE_{\rm p}^{'}). Our results show that Pem(θ)P^{\rm em}(\theta) is well fitted by a log-normal distribution centering at logθ/rad=0.76\log \theta/{\rm rad}=-0.76 with a width of σlogθ=0.57\sigma_{\log \theta}=0.57. We test different universal structured jet models by comparing model predictions with our empirical results. To make the comparisons reasonable, an "effective" threshold, which corresponds to the sample selection criteria of the long GRB sample, is used. We find that the predictions of a two-Gaussian jet model are roughly consistent with our empirical results. A brief discussion shows that cosmological effect on the EγEpE_{\gamma}-E_{\rm p}^{'} relation does not significantly affect our results, but sample selection effects on this relationship might significantly influence our results.Comment: 5 pages, 6 figures, accepted for publication in A

    Accelerando of East Asia Regional Cooperation. Analyzing the ASEAN+3- Centered Community-Building Process

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    The processes in East and South Asian became a peculiar subject for global community of international relations in the field. The presented volume is a collection of papers dealing with the processes of regionalization in East and South Asia. We collected papers from different academic unit both from Europe and Asia. Taking regionalization as a core subject of the volume the readers will discover the complexity of ongoing processes in East and South Asia. We present collection of papers from a very different perspectives starting from the theoretical debates, through economic dimensions of integration to political and military scope of regionalization in East and South Asia. The whole volume presents the diversity of understanding among international relations scholars community. By shaping the diverse view we can possess the better and in depth understanding of East Asia

    An Analysis of e-Mortgage Sites in New Zealand

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    The New Zealand mortgage market is undergoing tremendous change with more lenders, more offers, and more options available to the borrower to structure home loans to suit their needs. The rapid growth in use of the Internet by mortgage operations is both a consequence and a symptom of the rapid development of the mortgage market as well as of the underlying information and communication technology. Given the increasing number of online mortgage service providers and increasing advertising to promote awareness of their websites, it is important to evaluate the effectiveness of the Internet solutions. A multi-method approach (including website content analysis, two surveys, and interviews) was adopted for this study

    Does Exam-targeted Training Help Village Doctors Pass the Certified (Assistant) Physician Exam and Improve Their Practical Skills? A Cross-sectional Analysis of Village Doctors\u27 Perspectives in Changzhou in Eastern China

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    Background Quality of health care needs to be improved in rural China. The Chinese government, based on the 1999 Law on Physicians, started implementing the Rural Doctor Practice Regulation in 2004 to increase the percentage of certified physicians among village doctors. Special exam-targeted training for rural doctors therefore was launched as a national initiative. This study examined these rural doctors’ perceptions of whether that training helps them pass the exam and whether it improves their skills. Methods Three counties were selected from the 4 counties in Changzhou City in eastern China, and 844 village doctors were surveyed by a questionnaire in July 2012. Chi-square test and Fisher exact test were used to identify differences of attitudes about the exam and training between the rural doctors and certified (assistant) doctors. Longitudinal annual statistics (1980–2014) of village doctors were further analyzed. Results Eight hundred and forty-four village doctors were asked to participate, and 837 (99.17%) responded. Only 14.93% of the respondents had received physician (assistant) certification. Only 49.45% of the village doctors thought that the areas tested by the certification exam were closely related to the healthcare needs of rural populations. The majority (86.19%) felt that the training program was “very helpful” or “helpful” for preparing for the exam. More than half the village doctors (61.46%) attended the “weekly school”. The village doctors considered the most effective method of learning was “continuous training (40.36%)” . The majority of the rural doctors (89.91%) said they would be willing to participate in the training and 96.87% stated that they could afford to pay up to 2000 yuan for it. Conclusions The majority of village doctors in Changzhou City perceived that neither the certification exam nor the training for it are closely related to the actual healthcare needs of rural residents. Policies and programs should focus on providing exam-preparation training for selected rural doctors, reducing training expenditures, and utilizing web-based methods. The training focused on rural practice should be provided to all village doctors, even certified physicians. The government should also adjust the local licensing requirements to attract and recruit new village doctors

    Ultrafast magnetization enhancement and spin current injection in magnetic multilayers by exciting the nonmagnetic metal

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    A systematic investigation of spin injection behavior in Au/FM (FM = Fe and Ni) multilayers is performed using the superdiffusive spin transport theory. By exciting the nonmagnetic layer, the laser-induced hot electrons may transfer spin angular momentum into the adjacent ferromagnetic (FM) metals resulting in ultrafast demagnetization or enhancement. We find that these experimental phenomena sensitively depend on the particular interface reflectivity of hot electrons and may reconcile the different observations in experiment. Stimulated by the ultrafast spin currents carried by the hot electrons, we propose the multilayer structures to generate highly spin polarized currents for development of future ultrafast spintronics devices. The spin polarization of the electric currents carried by the hot electrons can be significantly enhanced by the joint effects of bulk and interfacial spin filtering. Meanwhile the intensity of the generated spin current can be optimized by varying the number of repeated stacking units and the thickness of each metallic layer.Comment: 11 pages, 6 figure

    Identification and Inference in First-Price Auctions with Risk Averse Bidders and Selective Entry

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    We study identification and inference in first-price auctions with risk averse bidders and selective entry, building on a flexible entry and bidding framework we call the Affiliated Signal with Risk Aversion (AS-RA) model. Assuming that the econometrician observes either exogenous variation in the number of potential bidders (N) or a continuous instrument (z) shifting opportunity costs of entry, we provide a sharp characterization of the nonparametric restrictions implied by equilibrium bidding. Given variation in either competition or costs, this characterization implies that risk neutrality is nonparametrically testable in the sense that if bidders are strictly risk averse, then no risk neutral model can rationalize the data. In addition, if both instruments (discrete N and continuous z) are available, then the model primitives are nonparametrically point identified. We then explore inference based on these identification results, focusing on set inference and testing when primitives are set identified. Keywords: Auctions, entry, risk aversion, identification, set inference
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