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1.
Weiwei Yu Pavla Vaneckova Xiaochuan Pan 《The Science of the total environment》2010,408(17):3513-3437
Background
A number of studies have examined the relationship between high ambient temperature and mortality. Recently, concern has arisen about whether this relationship is modified by socio-demographic factors. However, data for this type of study is relatively scarce in subtropical/tropical regions where people are well accustomed to warm temperatures.Objective
To investigate whether the relationship between daily mean temperature and daily all-cause mortality is modified by age, gender and socio-economic status (SES) in Brisbane, Australia.Methods
We obtained daily mean temperature and all-cause mortality data for Brisbane, Australia during 1996-2004. A generalised additive model was fitted to assess the percentage increase in all deaths with every one degree increment above the threshold temperature. Different age, gender and SES groups were included in the model as categorical variables and their modification effects were estimated separately.Results
A total of 53,316 non-external deaths were included during the study period. There was a clear increasing trend in the harmful effect of high temperature on mortality with age. The effect estimate among women was more than 20 times that among men. We did not find an SES effect on the percent increase associated with temperature.Conclusions
The effects of high temperature on all deaths were modified by age and gender but not by SES in Brisbane, Australia. 相似文献2.
3.
虽然传统的PTH(镀通孔)工艺十分成熟,应用广泛,但仍有很多不足之处。因此一些取代传统PTH工艺的直接电镀技术应用而生。导电聚合物直接电镀技术已经较为成熟,文中系统介绍了EcopactCP工艺的导电聚合物直接电镀技术。 相似文献
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5.
检索中国国家知识产权局受理且公开的航天运输系统专利申请,分析国内外企业在中国的专利申请态势,研究国内外企业在中国的技术比较优势演变,提出了中国航天运输系统发展的思考. 相似文献
6.
This paper introduces a certain graphical coalitional game where the internal topology of the coalition depends on a prescribed communication graph structure among the agents. The game Value Function is required to satisfy four Axioms of Value. These axioms make it possible to provide a refined study of coalition structures on graphs by defining a formal graphical game and by assigning a Positional Advantage, based on the Shapley value, to each agent in a coalition based on its connectivity properties within the graph. Using the Axioms of Value the graphical coalitional game can be shown to satisfy properties such as convexity, fairness, cohesiveness, and full cooperativeness. Three measures of the contributions of agents to a coalition are introduced: marginal contribution, competitive contribution, and altruistic contribution. The mathematical framework given here is used to establish results regarding the dependence of these three types of contributions on the graph topology, and changes in these contributions due to changes in graph topology. Based on these different contributions, three online sequential decision games are defined on top of the graphical coalitional game, and the stable graphs under each of these sequential decision games are studied. It is shown that the stable graphs under the objective of maximizing the marginal contribution are any connected graph. The stable graphs under the objective of maximizing the competitive contribution are the complete graph. The stable graphs under the objective of maximizing the altruistic contribution are any tree. 相似文献
7.
棉纺织厂设备维修方式的实践 总被引:4,自引:4,他引:0
分析了周期计划维修存在的问题,提出采用状态计划维修,并将状态计划维修分为日常点检、计划检修、定期修理、专项维修等项目,说明状态计划维修不仅可以节约用工、节约机物料消耗,而且提高了设备的运转率,并使产品质量稳中有升。 相似文献
8.
介绍了氢燃发动机的优势和现阶段氢燃发动机本身存在的主要问题,国内外对解决或减轻这些问题的方法及其机理对今后的研究方向也作出了预测。 相似文献
9.
精细陶瓷过滤膜及其应用 总被引:1,自引:0,他引:1
介绍精细陶瓷过滤膜的优点、性能、分离、洗净、连续操作 ,在食品、发酵工业中精细陶瓷过滤膜体系特征及应用。 相似文献
10.
介绍了V带换代产品窄V带的两种制式及其优缺点,并从技术性能及经济性进行了比较,指出了V带传动装置改用窄V带的3种使用方法。 相似文献