Marginally oversaturated designs

A special class of supersaturated design, called marginally over saturated design (MOSD), in which the number of variables under investigation (k) is only slightly larger than the number of experimental runs (n), is presented. Several optimality criteria for supersaturated designs are discussed. It is shown that the resolution rank criterion is most appropriate for screening situations. The construction method builds on two major theorems which provide an efficient way to evaluate resolution rank. Examples are given for the cases n=8, 12, 16, and 20. Potential extensions for future work are discussed.     

Construction of Confidence Intervals for the IVIean of a Population Containing Many Zero Values

The likelihood ratio method is used to construct a confidence interval for a population mean when sampling from a population with certain characteristics found in many applications, such as auditing. Specifically, a sample taken from this type of population usually consists of a very large number of zero values, plus a small number of nonzero values that follow some continuous distribution. In this situation, the traditional confidence interval constructed for the population mean is known to be unreliable. This article derives confidence intervals based on the likelihood-ratio-test approach by assuming (1) a normal distribution (normal algorithm) and (2) an exponential distribution (exponential algorithm). Because the error population distribution is usually unknown, it is important to study the robustness of the proposed procedures. We perform an extensive simulation study to compare the percentage of confidence intervals containing the true population mean using the two proposed algorithms with the percentage obtained from the traditional method based on the central limit theorem. It is shown that the normal algorithm is the most robust procedure against many different distributional error assumptions.     

评政治小说《张居正》

《张居正》是一部政治小说,作者对现实变革的热情,就在一位“楚狂”式“乡贤”的政治改革悲剧中找到言说切入点,最大众化的叙事结构和最通俗的话语方式,包容着最精英化的深度思考,这就是小说成为雅俗共赏的作品的原因。     

加入WTO最深刻之影响:推动中国政府变革

入世后 ,激励经济市场化进程对政府的挑战和影响是深刻的、全方位的 ,它是对我国现有政府行为的传统性、保守性、非科学性的一次史无前例的挑战。对政府职能、管理模式、执政理念的准确定位是经济市场化生存的外力需要 ,因而推进政府的变革是历史的必然。     

创建现代高职制度平台

高职教育要想突出办学特色 ,实现跨越式发展 ,其关键在于制度创新。而创建现代高职制度平台 ,实现办学机制由学校本位转为市场本位、人事制度由身份制转为岗位制、管理体制由过程管理转为目标管理、教学体系由学历教育转为技术教育“四大”转型 ,是增强高职竞争制胜的综合实力的治本之策     

伍德沃德-霍夫曼规则来源之争

简要介绍了美国化学家E．J．科里(E．J．Comy，1928-)对伍德沃德-霍夫曼规则(Woodward-Hoffmann rules)来源优先权之争的来龙去脉以及R．霍夫曼(Roald Hoffmann，1937-)对昔日往事的回顾，有助于理解伍德沃德-霍夫曼规则来源之争。     

"入世"后中国人力资源开发面临的机遇与挑战

"入世'后,中国人力资源开发面临人才成长与发展的环境危机,但"入世"也使国人增强了尊重知识、尊重人才的意识,加强了国家之间的交流与合作.面对机遇和挑战,我们应当高度重视人力资源的开发,大力发展教育,加大人才制度的改革,建立和健全人才录用与激励机制.     

社会化小农与乡村治理条件的演变——从空间、权威与话语维度考察

改革开放以来,小农快速社会化,逐步从传统小农演变为社会化小农。小农的社会化或社会化小农对乡村治理产生了革命性的影响,不仅改变了治理的基础、治理的资源,也改变了治理的条件。通过对小农社会化对乡村治理的空间、权威、话语的影响来考察乡村治理条件的变化可以看出:小农的社会化改变了乡村治理的空间、削弱了治理的权威、建构了新的话语体系。     

论意愿论及其普遍有效性——关于道德判断根据的考察之四

意愿论将应事者的意愿作为道德判断的最终根据,其经典表述是己所不欲,勿施于人。只要尊重应事者的意愿,即不强迫应事者,就能保证应事者的利益与交往整体的利益都不减少,则施事行为就不是不道德的,因此,意愿论有助于增进人类福利。由于己所不欲,勿施于人可以分别作为一阶规则、二阶规则与三阶规则来使用,分别处理交往中的单个事件、一类事件与规则,这使意愿论具有普遍有效性。意愿论兼具动机论、效果论与规则论之优点,且能规避三者之不足。