Economic design of one-sided screening procedures based on a correlated variable with all parameters unknown

Summary Economic design of one-sided screening procedures for improving outgoing product quality based on a screening variable is considered for the case with all parameters unknown. It is assumed that the performance and screening variables are jointly normally distributed and that costs are incurred by screening inspection, acceptance of an imperfect item, and disposition of a rejected one. A method for finding optimal cutoff value based on the predictive distribution is presented.     

Cardinality-based equality of opportunities

We study possible rankings of opportunity profiles. An opportunity profile is a list of opportunity sets, one for each agent in the society. We compare profiles on the basis of the notion of “equality of opportunities”. Our main results show the necessary and sufficient conditions for this comparison to be made using exclusively the information provided by two cardinal measures: the number of common alternatives in all sets of a given profile and the difference between the number of alternatives in the individual sets. We also show that, under additional axioms, we can combine these criteria only in a weighted procedure or in some lexicographic refinements of a weighted procedure.      

电镀镍污泥氨浸出工艺中氨回收的技术

介绍了电镀镍污泥浸出工艺中氨回收的工艺流程、使用原材料和各单元操作,并对各单元操作的技术条件进行了理论分析和实践检验.     

中国大中型造纸企业技术创新机制探讨

建立和健全大中型企业以技术创新为核心的技术进步的内在机制 ,保障提高技术创新的绩效是目前亟待解决的问题。本文根据 2 0 0 0年中国科技统计年鉴中的数据 ,对大中型造纸企业在技术创新方面存在的主要问题进行分析 ,就如何完善其动力机制和运行机制提出建议     

大学科技园运作模式探讨

本文总结了国内外大学科技园的发展经验,认为在大学科技园发展到一定阶段以后必须及时建立企业化的运作模式。针对我国大学科技园存在的问题,讨论了如何将国外先进经验与我国实际情况结合,构建适应我国国情的大学科技园运作模式。     

商业银行前台操作风险表现及其防范措施研究

防范银行前台操作风险对降低金融案件具有重要意义,在归纳总结了商业银行前台操作风险典型表现的基础上,提出了防范前台风险发生的措施。     

Memory recall errors in retrospective surveys: A reverse record check study

This paper reports on a study to compare self-reports during an interview with staff who attended a University health centre in Turkey, with the records of visits to the same health centre over the previous 12 months. Design of the study reflects the effects of importance of the event, duration since the event, frequency of the occurrence of the event, measurement scale of the event, and bounded and unbounded recalling. In order to assess the extent of recall error, responses to retrospective questions on health centre visits are compared with administrative records. Statistical models are proposed for short and long term human memory recall error effects on responses.     

卡普若干问题研究

对卡普的种类及其性质进行了分析,认为卡普是汽车共享的一种,"非合意拼的"不是卡普,法律应予禁止;经营性卡普在法律上具有适当性,政府应予鼓励.最后,对如何正确发展卡普提出了相应的措施.     

电子商务环境下我国第三方物流企业运作模式分析

在当今电子商务高速发展的环境下，第三方物流出现信息化、自动化、联盟化、网络化、个性化和柔性化的趋势。而建立一种与之相适应的新型第三方物流模式成了中国物流企业需要解决的问题。论文分析了电子商务对第三方物流的影响及我国第三方物流发展现状，探讨性提出了电子商务环境下我国第三方物流运作的基本模式及操作建议。     

建立城市环境卫生长效管理机制

当前各地在改善城市环境卫生中常常不能持久稳定。作者根据实践经验 ,提出建立城市环境卫生长效管理运行机制 :由行政推动转向依法管理 ;由多头管理转向专业管理 ;由政府统包向市场运作转变。