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41.
文章通过研究山东省21种高校理工学报2007 ~ 2011年的总被引频次、影响因子、基金论文比、来源文献量、引用刊数、地区分布数等6项指标数据,对21种学报的学术影响力进行了评价分析.数据表明:山东省高校理工学报的总体水平不高,影响力有限,且各学报规模和发展水平不平衡.针对存在的问题,山东省高校理工学报应当采取以下措施提升学报影响力:平衡综合性和专业性;找准定位,寻求突破;广开渠道,挖掘稿源. 相似文献
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We investigate the asymptotic behaviour of binned kernel density estimators for dependent and locally non-stationary random fields converging to stationary random fields. We focus on the study of the bias and the asymptotic normality of the estimators. A simulation experiment conducted shows that both the kernel density estimator and the binned kernel density estimator have the same behavior and both estimate accurately the true density when the number of fields increases. We apply our results to the 2002 incidence rates of tuberculosis in the departments of France. 相似文献
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Heitor de Oliveira Duarte Enrique Lopez Droguett Márcio das Chagas Moura Elainne Christine de Souza Gomes Constança Barbosa Verônica Barbosa Moacyr Araújo 《Risk analysis》2014,34(5):831-846
We developed a stochastic model for quantitative risk assessment for the Schistosoma mansoni (SM) parasite, which causes an endemic disease of public concern. The model provides answers in a useful format for public health decisions, uses data and expert opinion, and can be applied to any landscape where the snail Biomphalaria glabrata is the main intermediate host (South and Central America, the Caribbean, and Africa). It incorporates several realistic and case‐specific features: stage‐structured parasite populations, periodic praziquantel (PZQ) drug treatment for humans, density dependence, extreme events (prolonged rainfall), site‐specific sanitation quality, environmental stochasticity, monthly rainfall variation, uncertainty in parameters, and spatial dynamics. We parameterize the model through a real‐world application in the district of Porto de Galinhas (PG), one of the main touristic destinations in Brazil, where previous studies identified four parasite populations within the metapopulation. The results provide a good approximation of the dynamics of the system and are in agreement with our field observations, i.e., the lack of basic infrastructure (sanitation level and health programs) makes PG a suitable habitat for the persistence and growth of a parasite metapopulation. We quantify the risk of SM metapopulation explosion and quasi‐extinction and the time to metapopulation explosion and quasi‐extinction. We evaluate the sensitivity of the results under varying scenarios of future periodic PZQ treatment (based on the Brazilian Ministry of Health's plan) and sanitation quality. We conclude that the plan might be useful to slow SM metapopulation growth but not to control it. Additional investments in better sanitation are necessary. 相似文献
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We introduce a new approach to hospital-acquired disease risk assessment from public health databases. In a spirit similar to actuarial risk theory, we define an adjustment coefficient that can quantify the risk associated with a hospital department, allowing comparisons of similar departments. The adjustment coefficient characterizes the tail of the distribution of the total patient length of stay in a department before the first disease event occurs. We show that this coefficient is the solution of a Lundberg-like equation, and we provide a nonparametric estimation procedure for this measure, based on a Cramér-Lundberg approximation for the tail of the distribution. Using simulations, we provide evidence of the robustness of the approximation to various individual risk models. In addition, we illustrate the relevance of this approach by evaluating the risk associated with a standard patient safety indicator in 20 hospitals of southeastern France. 相似文献
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母亲是外国人,父亲是中国人,而且又位于偏远的边境和少数民族地区,所以这种跨国婚姻的子女在政治认同方面比一般小孩更加冷漠;在国家认同方面他们也为自己的母亲难以成为中国人而遗憾;在行为规范引导方面,他们地处走私、贩毒、拐卖妇女儿童等违法犯罪现象比较普遍的边境地区,在族群文化和国家主体文化及法律存在冲突的情况下,他们也面临着一些迷茫。边境跨国婚姻的子女也是祖国边疆的花朵,尤其需要呵护。在家庭方面,需要正视他们家庭不完整、家庭功能难以正常发挥的问题,需要帮助他们解决家庭的特殊困难;在社会方面,需要通过依法加强民主政治实践来强化他们对国家政治的认可;在学校教育方面,需要加强法制教育。 相似文献
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Career studies attract significant attention, but most of the theories and concepts were developed and tested in Western contexts. Based on a systematic review and analysis of 95 articles published in the field of careers that focus on China in the period between 1991 and 2017, this paper identifies emerging trends and outlines a profile of the current development of careers research in the Chinese context. Using a time and space analytical framework, the review evaluates the theoretical and empirical career lenses embedded in the unique Chinese cultural, institutional and organizational contexts and confirms that research on Chinese careers is significantly underdeveloped. Through a theoretical lens of Confucianism, we propose a need to consider context‐specific factors, in particular time and space, when conducting Chinese careers research, and present implications for future research on careers in China. 相似文献