浅谈高等职业技术教育的机遇和挑战

中国入世的同时,国家高等教育的有关政策也进行了重大的调整,高等职业技术教育面临较大的发展机遇,但挑战也是巨大的。高等学校特别是高等专科学校和高等职业技术学院,如何应对目前的机遇和挑战:从大的方面来说,将对中国高等职业技术教育的发展、社会经济的发展及国家产业结构调整产生深远的影响;从小的方面来说,将对一个学校(院)的生存和发展产生重大的影响。     

Type I error rates from likelihood‐based repeated measures analyses of incomplete longitudinal data

The last observation carried forward (LOCF) approach is commonly utilized to handle missing values in the primary analysis of clinical trials. However, recent evidence suggests that likelihood‐based analyses developed under the missing at random (MAR) framework are sensible alternatives. The objective of this study was to assess the Type I error rates from a likelihood‐based MAR approach – mixed‐model repeated measures (MMRM) – compared with LOCF when estimating treatment contrasts for mean change from baseline to endpoint (Δ). Data emulating neuropsychiatric clinical trials were simulated in a 4 × 4 factorial arrangement of scenarios, using four patterns of mean changes over time and four strategies for deleting data to generate subject dropout via an MAR mechanism. In data with no dropout, estimates of Δ and SE_Δ from MMRM and LOCF were identical. In data with dropout, the Type I error rates (averaged across all scenarios) for MMRM and LOCF were 5.49% and 16.76%, respectively. In 11 of the 16 scenarios, the Type I error rate from MMRM was at least 1.00% closer to the expected rate of 5.00% than the corresponding rate from LOCF. In no scenario did LOCF yield a Type I error rate that was at least 1.00% closer to the expected rate than the corresponding rate from MMRM. The average estimate of SE_Δ from MMRM was greater in data with dropout than in complete data, whereas the average estimate of SE_Δ from LOCF was smaller in data with dropout than in complete data, suggesting that standard errors from MMRM better reflected the uncertainty in the data. The results from this investigation support those from previous studies, which found that MMRM provided reasonable control of Type I error even in the presence of MNAR missingness. No universally best approach to analysis of longitudinal data exists. However, likelihood‐based MAR approaches have been shown to perform well in a variety of situations and are a sensible alternative to the LOCF approach. MNAR methods can be used within a sensitivity analysis framework to test the potential presence and impact of MNAR data, thereby assessing robustness of results from an MAR method. Copyright © 2004 John Wiley & Sons, Ltd.     

《汉书》应劭注偏正式双音词研究

《汉书》应劭注偏正式双音词数量最多,偏语素与正语素有10种语义关系。有名+名→名等16种构词方式。名词具有绝对优势。偏正式双音词的词性基本上是由充当正语素单音词的词性决定的。注释学的繁荣,特别是它对义项加以选择、限制的要求,促进了汉语偏正式双音词的发展。     

有效词汇教学探讨

这篇论文旨在解决英语词汇教学方面的问题。在分析学生词汇习得的基础上和对教学法的回顾和讨论的基础上,论文得出了一些可考的观点。     

中国企业知识管理系统实施的现状与对策

知识经济带来了激烈的竞争 ,我国企业的生存环境不仅潜伏着巨大的风险 ,也蕴含着无尽的机遇。本文探讨了知识管理、知识管理系统以及企业知识管理的内涵 ,并分析研究了中国企业知识管理系统实施的现状。指出 ,当前在中国企业界对知识管理的需求 ,已经从认识过渡到实施阶段 ,而如何根据中国企业界的现状 ,制定切实可行的发展战略和实施方案正是本文探讨的重点     

The potential of integrated modelling in conservation biology: A case study of the black‐footed albatross (Phoebastria nigripes)

Conservation biology aims at assessing the status of a population, based on information which is often incomplete. Integrated population modelling based on state‐space models appears to be a powerful and relevant way of combining into a single likelihood several types of information such as capture‐recapture data and population surveys. In this paper, the authors describe the principles of integrated population modelling and they evaluate its performance for conservation biology based on a case study, that of the black‐footed albatross, a northern Pacific albatross species suspected to be impacted by longline fishing     

对我国高等教育创新的几点思考

文章分析了教育创新的内涵和意义,对深化高等学校教学改革的方法和途径进行了探讨.     

做好新时期高校的人事档案工作

合并后高校的人事档案管理部门由于原先各校的管理水平存在着差异,档案内容缺乏完整性,失实现象有所存在,这些都给档案管理人员带来了繁重的工作量。充分调动档案工作人员的积极性,管理人员建立优良的服务意识,畅通人事档案材料来源渠道,档案工作实现网络化,是做好新时期人事档案工作的关键。     

论新时期高等学校人才资源管理

本文通过对新时期高等学校人才资源管理的对象、层次、内容和工作重点的论述 ,揭示了加强高等学校人才资源管理的重要性 ,提出了高校选拔、培养、吸引人才的措施     

论行政合同的法律地位

合同制度并非私法上的特有制度,公、私法的区分只是从目的、主体或法律关系角度进行,而不是从观念、手段角度进行划分,行政合同与依法行政在理论上是能够得以调和的,行政合同的存在是合理的,并在此认识的基础上讨论了行政合同的概念、性质及救济。