研发人员心理契约的结构、内容和感知现状

通过对武汉和深圳两地8家企业160名研发人员的问卷调查,初步探索了研发人员的心理契约结构、内容和感知现状。探索性因子分析的结果表明,研发人员的心理契约由业绩报酬、生涯发展、以及工作/生活平衡三个维度构成。其具体内容与一般知识员工的心理契约有着明显的差异。     

立足"3R"打造矿难治理的准备构成

打造矿难治理的准备构成是一项复杂的、系统性的工作,也是坚持“以人为本”的科学发展观与构建和谐社会对矿业行业的具体要求。矿难因为涉及到人民的生命与财产安全,已成为制约我国经济社会可持续发展的瓶颈。导致矿难频发的重要原因在于矿难治理的准备机制不足,因此治理矿难频发关键要立足“3R”,即“备战、反应、关联”,打造矿难治理的准备构成体系,建立、健全我国矿难治理的长效准备机制。     

跨国公司研发国际化与中国世界制造中心成长

跨国公司研发活动国际化趋势日益加强,并呈现向发展中东道国集中的发展趋势。理论上讲,跨国公司研发国际化对发展中东道国的技术进步有正反两方面的影响。中国正处在世界制造基地向世界制造中心转变的过程中,应该积极发挥跨国公司研发国际化给中国技术进步带来的积极作用,提升中国制造业自主技术创新能力,实现向世界制造中心升级。     

The RL2 chart versus the np chart for detecting upward shifts in fraction defective

The use of the np chart for monitoring fraction-defective is well-established, but there are a number of relatively simple alternatives based on run-lengths of conforming items. Here, the RL₂ chart, based on the moving sum of two successive conforming run-lengths, is investigated in order to provide SPC practitioners with clear-cut guidance on the comparative performance of these competing charts. Both sampling inspection and 100% inspection are considered here, and it is shown that the RL₂ chart can often be considerably more efficient than the np chart, but the comparative performance depends on the false-alarm rate used for the comparison. Graphs to aid parameter-choice for the RL₂ chart are also provided.     

ON THE COVERAGE PROBABILITY OF CONFIDENCE INTERVALS IN REGRESSION AFTER VARIABLE SELECTION

This paper considers a linear regression model with regression parameter vector β. The parameter of interest is θ= a^Tβ where a is specified. When, as a first step, a data‐based variable selection (e.g. minimum Akaike information criterion) is used to select a model, it is common statistical practice to then carry out inference about θ, using the same data, based on the (false) assumption that the selected model had been provided a priori. The paper considers a confidence interval for θ with nominal coverage 1 ‐ α constructed on this (false) assumption, and calls this the naive 1 ‐ α confidence interval. The minimum coverage probability of this confidence interval can be calculated for simple variable selection procedures involving only a single variable. However, the kinds of variable selection procedures used in practice are typically much more complicated. For the real‐life data presented in this paper, there are 20 variables each of which is to be either included or not, leading to 2²⁰ different models. The coverage probability at any given value of the parameters provides an upper bound on the minimum coverage probability of the naive confidence interval. This paper derives a new Monte Carlo simulation estimator of the coverage probability, which uses conditioning for variance reduction. For these real‐life data, the gain in efficiency of this Monte Carlo simulation due to conditioning ranged from 2 to 6. The paper also presents a simple one‐dimensional search strategy for parameter values at which the coverage probability is relatively small. For these real‐life data, this search leads to parameter values for which the coverage probability of the naive 0.95 confidence interval is 0.79 for variable selection using the Akaike information criterion and 0.70 for variable selection using Bayes information criterion, showing that these confidence intervals are completely inadequate.     

元音格局研究方法的理解与阐释

元音格局的研究是语音格局研究方法运用的一个方面。元音格局的研究方法是切实可行的,因为它一是立足于音节结构给元音划分层次,符合中国音韵学的传统;二是元音格局中的元音是音位性的;三是立足于语音学与音系学的结合。这种研究方法具有较强的解释力和延伸性,可用来研究少数民族语言及众多汉语方言的元音格局,具有类型学的意义。     

韩国新一轮产业结构调整及其对我国经济结构调整的启示

20世纪90年代以来,韩国经济发展速度放慢的一个重要原因,就是产业结构调整的滞后。目前,韩国正在进行新一轮的产业结构调整,并且初见成效。研究并借鉴韩国产业结构调整的得失,对正处于经济结构调整关键时期的中国来说,大有裨益。     

韩剧热播的社会效益及对中国电视剧的启示

近年来，韩国电视剧在儒家文化圈，特别是在中国传媒市场上呈现强劲趋势，给韩国带来了巨大的经济收益，带动了众多相关产业，甚至扭转了其他国家对韩民族的文化偏见。探讨韩剧如何火爆，对中国电视剧的发展有一定的启示。