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《California medicine》1955,83(5):381-382
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Current crop insurance is designed to mitigate monetary fluctuations resulting from yield losses for a specific year. However, yield realization tendency can vary from year to year and may depend on the correlation of yield realizations across years. When the current single-year Yield Protection (YP) and Area Risk Protection Insurance (ARPI) contracts are extended to multiple periods, actuarially fair premium rate is expected to decrease as poor yield realizations in a year can be offset by another year’s better yield realizations. In this study, we first use simulations to demonstrate how significant premium savings are possible when coverage is based on the sum of yields across years rather than on a year-by-year basis. We then describe the design of a multi-year framework of crop insurance and model the insurance using a copula approach. Insurance terms are extended to more than a year and the premium, liability, and indemnity are determined by a multi-year term. Moreover, partial payment is provided at the end of each term to offset the possibility of significant loss in a single term. County-level data obtained from the U.S. Department of Agriculture are used to demonstrate the implementations of the proposed multi-year crop insurance. The proposed multi-year plan would benefit farmers by offering insurance guarantees across years for significantly lower costs.  相似文献   

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Corynebacteria are used for a wide variety of industrial purposes but some species are associated with human diseases. With increasing number of corynebacterial genomes having been sequenced, comparative analysis of these strains may provide better understanding of their biology, phylogeny, virulence and taxonomy that may lead to the discoveries of beneficial industrial strains or contribute to better management of diseases. To facilitate the ongoing research of corynebacteria, a specialized central repository and analysis platform for the corynebacterial research community is needed to host the fast-growing amount of genomic data and facilitate the analysis of these data. Here we present CoryneBase, a genomic database for Corynebacterium with diverse functionality for the analysis of genomes aimed to provide: (1) annotated genome sequences of Corynebacterium where 165,918 coding sequences and 4,180 RNAs can be found in 27 species; (2) access to comprehensive Corynebacterium data through the use of advanced web technologies for interactive web interfaces; and (3) advanced bioinformatic analysis tools consisting of standard BLAST for homology search, VFDB BLAST for sequence homology search against the Virulence Factor Database (VFDB), Pairwise Genome Comparison (PGC) tool for comparative genomic analysis, and a newly designed Pathogenomics Profiling Tool (PathoProT) for comparative pathogenomic analysis. CoryneBase offers the access of a range of Corynebacterium genomic resources as well as analysis tools for comparative genomics and pathogenomics. It is publicly available at http://corynebacterium.um.edu.my/.  相似文献   

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Collaboration among scholars and institutions is progressively becoming essential to the success of research grant procurement and to allow the emergence and evolution of scientific disciplines. Our work focuses on analysing if the volume of collaborations of one author together with the relevance of his collaborators is somewhat related to his research performance over time. In order to prove this relation we collected the temporal distributions of scholars’ publications and citations from the Google Scholar platform and the co-authorship network (of Computer Scientists) underlying the well-known DBLP bibliographic database. By the application of time series clustering, social network analysis and non-parametric statistics, we observe that scholars with similar publications (citations) patterns also tend to have a similar centrality in the co-authorship network. To our knowledge, this is the first work that considers success evolution with respect to co-authorship.  相似文献   

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In this paper, we explore the role of reciprocity in the employment of restrictive measures in contexts of contagion. Reciprocity should be understood as a substantive value that governs the use, level and extent of restrictive measures. We also argue that independent of the role reciprocity plays in the legitimisation the use of restrictive measures, reciprocity can also motivate support and compliance with legitimate restrictive measures. The importance of reciprocity has implications for how restrictive measures should be undertaken when preparing and evaluating public health responses to contagion.
A. M. ViensEmail:
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生物科学类专业期刊网络化现状调查与分析   总被引:8,自引:0,他引:8  
王宝英  张萍 《四川动物》2005,24(1):69-71,77
通过网上实际检索的方法,对108种生物学专业期刊的网络化状况进行了调查研究,并针对其存在问题提出了一些改进对策。  相似文献   

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医疗卫生是构建和谐社会的重要因素之一,也是关乎百姓切身利益的重大问题之一,近年来,医疗体制的不断改革,医疗卫生的相关政策的不断出台,已经大大地改善了我国广大人民群众的“看病难,看病贵”等问题,增加了医保的覆盖人群,减轻了城市低收入人群及农村的医疗负担,但是,我们仍面临着巨大的挑战,新的问题也不断涌现,医疗卫生政策不适应现在的医疗需求发展、经济发展不均衡、不同层次群众的医疗需求有差异等,都是医疗卫生改革中面临的问题,医疗改革的不断推进势在必行。我国的医疗保障制度覆盖率已经达到95%,但是,现行的医疗保障制度的还不能从根本上解决人民群众的“就医难,治病贵”的问题,其他医疗保险不能与现行的医疗保障制度相适应,从而,影响了我国整体的医疗水平的提高。  相似文献   

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Avian influenza is a major animal and public health concern in Bangladesh. A decade after development and implementation of the first national avian influenza and human pandemic influenza preparedness and response plan in Bangladesh, a two-stage qualitative stakeholder analysis was performed in relation to the policy development process and the actual policy. This study specifically aimed to identify the future policy options to prevent and control avian influenza and other poultry-related zoonotic diseases in Bangladesh. It was recommended that the policy should be based on the One Health concept, be evidence-based, sustainable, reviewed and updated as necessary. The future policy environment that is suitable for developing and implementing these policies should take into account the following points: the need to formally engage multiple sectors, the need for clear and acceptable leadership, roles and responsibilities and the need for a common pool of resources and provision for transferring resources. Most of these recommendations are directed towards the Government of Bangladesh. However, other sectors, including research and poultry production stakeholders, also have a major role to play to inform policy making and actively participate in the multi-sectoral approach.  相似文献   

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