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91.
以关键链为物质载体的风险效应的传递在外界环境的作用下,具有一定的扩增性。本文在关键链的基础上,从风险效应链式形态出发,通过对项目工期风险链式传递机理的分析,识别项目关键链上的关键工期风险结点,针对性的将关键链管理中的项目缓冲分解到关键结点之后,有效抑制其关键结点的传递途径,从而达到断链的效果,减少破坏的扩增性,达到风险控制的目的,从而提高项目管理的效率。 相似文献
92.
Methodological Approaches to Assessing Risk Perceptions Associated with Food-Related Hazards 总被引:1,自引:0,他引:1
The psychometric approach developed by Slovic and his co-workers has been effectively used to assess risk perceptions associated with different food-related hazards. However, further examination (using questionnaire data and partial correlation techniques) has indicated that technological hazards are highly differentiated from lifestyle hazards, in terms of both hazard control and knowledge about the hazard. Optimistic bias was also seen to vary between hazards. Further research has focused on a particular hazard, genetic engineering. Risk perceptions associated with genetic engineering are underpinned by ethical concern and questions relating to perceived need for the technology, as well as perceptions of risk or harm. However, increasing the specificity of hazard stimuli was found to alter the factor structure of underlying risk perceptions. The utility of preference mapping procedures in determining individual differences in trust in risk regulators is also discussed. 相似文献
93.
Using distributions of time spent at various ventilation levels, ranges of inhalation exposure in the population can be established. Distributions of exposure time were determined using results of a study by the California Air Resources Board (CARB) which focused on time spent by humans participating in various activities and the locations where the activities occurred. The daily at-home activities from the CARB study were assigned to one of three ventilation levels, generating aggregate time periods. Distinct age and gender populations were identified, and distributions for aggregate time were established for these populations at each of the ventilation levels. In addition to aggregate time spent at home, distributions for various ages and genders were established for aggregate time spent at school and work. By combining distributions of aggregate time with corresponding ventilation rates, the distribution of inhalation rates can be established for at home, at work, and at school exposures. 相似文献
94.
随着供应链中断事件的频繁发生及其严重后果,供应链风险管理目前成为供应链研究的一个重要方向。本文总结分析了供应链风险来源及类别,提出了供应链风险防范及其对策。 相似文献
95.
当信用组合内资产个数较少时,基于Gordy提出的粒度调节方法计算的组合风险量度VaR将严重被低估,从而高估一致性风险量度预期短缺ES。本文利用Taylor展开式改进粒度调节方法,提高估计ES的准确性;并且假设行业因素是宏观经济因素的线性函数,由此保证了组合不变性的条件,从而扩展单因素模型为递阶双因素模型,提高相关性估计准确性,解决了单因素模型高估经济资本的问题。模拟结果显示递阶双因素模型的优越性,特别是组合内资产规模较小时,改进的效果更明显。 相似文献
96.
徐维 《西昌学院学报(社会科学版)》2008,20(3):96-99.112
改革开放以后,随着我国社会主义市场经济的深入发展,越来越多的企业把人才储备看作企业竞争力的核心所在。但同物资资本投资一样,人力资本投资也存在着风险,而且由于人力资本本身的特殊性,人力资本投资还具有许多特有的风险。本文先是简要地介绍了人力资本的内涵及起源,然后从企业的角度分析人力资本投资存在的各类风险,并以此为基础,提出应对这些企业人力资本投资风险的相应措施。 相似文献
97.
This exploratory study examines cognitive risk factors, anxiety sensitivity, and positive and negative affect, as related
to the development of anxiety and depression. In a mailed survey, adolescents completed the Child Anxiety Sensitivity Index
and the Positive and Negative Affectivity Scale. Previous research utilized the broad and unified variable of anxiety sensitivity
as a predictor of anxiety. In this study, we separate and examine the four specific factors of anxiety sensitivity: mental
incapacitation concerns, social concerns, disease concerns, and unsteady concerns, and relate it to specific anxiety disorders
and depression. Results indicate good convergent validity and improved divergent validity when utilizing the four factors
of anxiety sensitivity as compared to using it as one construct. Results also suggest: (1) OCD and GAD share numerous similarities
and (2) the importance of the role of negative affectivity in anxiety and depression. Being aware of the components of anxiety
sensitivity and how they relate to specific anxiety disorders can help a social worker when rendering a diagnosis.
Part of the data presented in this article was from David A. Dia’s doctoral dissertation. 相似文献
98.
我国高等教育正处于全面改革和发展阶段,在此过程中出现了需求的扩大与资金短缺的矛盾,这成为高等教育进一步发展的制约因素。文章对这一矛盾进行了分析,并从教育投资风险的角度探讨了原因,最后提出一些针对性的措施。 相似文献
99.
The National Research Council advocates for what they term a risk democracy, in which risk issues require community decision-making based on dialogue. This essay focuses on the promotion of civic responsibility in a risk democracy. Award-winning public awareness campaigns are analyzed to demonstrate how community partnerships and civic responsibility can improve community resilience. First, the role of a community in an emergency is discussed; second, the current focus of the Department of Homeland Security on prevention rather than preparation as illuminated by interviews with emergency managers is critically examined; and finally, public awareness campaigns are presented to show how personal and civic responsibility can assist in emergency planning and response. 相似文献
100.
This paper experimentally investigates if and how beliefs, trust, and risk attitudes are associated with cooperative behavior. By applying incentivized elicitation methods to measure these concepts, we find that beliefs about others’ cooperation and trust are positively correlated with cooperation in a public goods game. However, even though contributing to a public good resembles a situation of making decisions under strategic uncertainty, elicited risk preferences do not seem to explain cooperation in a systematic way. 相似文献