Exploring the effect of a middle response category on response style in attitude measurement

In this research we focus on the link between response style behaviour in answering rating data such as Likert scales and the number of response categories that is offered. In a split-ballot experiment two versions of a questionnaire were randomly administered. The questionnaires only differed in the number of response categories, i.e. 5 vs. 6 categories. In both samples a latent-class confirmatory factor analysis revealed an extreme response style factor. The 6-response categories version, however, revealed the more consistent set of effects. As far as the content latent-class factors, i.e. familistic values and ethnocentrism, are concerned, results were fairly similar. However, a somewhat deviant pattern regarding the familistic values items in the 6-response categories version suggested that this set of items is less homogeneous than the set of ethnocentric items. The effect of gender, age and education was also tested and revealed similarities as well as differences between the two samples.     

Sequential decisions with several agents

Summary. We consider k agents who have different subjective probabilities and are utility maximizers. A planner, who knows the beliefs of the agents, maximizes the social expected utility, which is increasing and symmetric in the utilities of the agents. She does that by optimally stopping the flow of information released to the agents. The explicit form of the optimal stopping time is given. Received: October 23, 1995; revised version: June 25, 1997     

Strong rationalizability for two-player noncooperative games

Summary. The paper introduces a version of rationalizability that ignores strategies that are supported by negligible sets of beliefs, where a negligible set is one whose Lebesgue measure is zero. The theory is developed solely for the special case of point rationalizability; conditions are then derived under which point rationalizability entails no loss of generality. When these conditions obtain, the predictions yielded by this approach are often (although not always) a significant reduction over what is predicted by rationalizability. Received: September 10 1996; revised version: July 18, 1997     

面向产品创新要求的协同创新客户选择

现有协同创新客户选择方法主要从客户自身特点出发,未充分考虑产品创新要求的影响。鉴于此,提出了综合考虑产品创新要求和客户自身特点的协同创新客户选择方法,建立了产品创新要求和选择协同创新客户的指标之间的质量屋模型;基于模糊加权平均法和-截集确定评价指标权重,实现了指标权重随不同产品创新要求的动态调整;基于粗数方法提出了客户数量较多情况下确定客户在各指标上评价值的方法,计算客户评价值。案例分析结果表明,该方法具有合理性和可行性。     

进口贸易对我国技术创新能力提升的影响效应——基于动态面板数据GMM方法的经验分析

本文利用我国1998—2007年的省际面板数据,采用动态面板广义矩估计计量方法就进口贸易对我国技术创新的影响进行了实证分析。研究发现:过去的创新积累对当期的技术创新有重要影响;进口贸易对我国技术创新能力的提升有显著的促进作用,其中对高水平技术创新的影响存在人力资本门槛效应;此外,进口贸易对我国技术创新的影响存在区域差异性,即影响程度呈现出从东部地区向西部地区递减的现象。     

近邻效应与企业进口决策

本文在构建进口近邻效应理论模型的基础上,运用2000-2006年中国海关进口企业数据考察近邻效应对企业进口决策的影响。结果表明:近邻效应对企业进口决策的影响显著,近邻进口企业数量越多,潜在进口企业从相同市场进口的概率越大;从近邻效应的作用范围来看,近邻效应超出一定空间范围才会表现出空间距离衰减特征,地级市是近邻效应的最佳作用范围;从企业初始进口看,近邻效应对企业进口额的影响并不显著,在某种意义上,近邻效应只体现于企业进口决策行为,而不会影响企业首次进口表现;从龙头企业的角色来看,近邻企业中龙头企业的存在大大促进了潜在企业的进口概率。     

大股东持股、治理环境与信息披露质量

本文以2005～2008年间的深市上市公司为研究样本,选用深市信息披露考评结果衡量信息披露质量水平,构建Logistic回归模型对大股东持股、治理环境和信息披露质量的关系进行实证分析.研究结果发现,提高第一大股东持股比例和增加大股东个数对信息披露质量有正面影响;第二大股东持股状态对信息披露质量影响不显著;在治理环境好的地区,提高第一大股东持股比例有利于改善信息披露质量,而在治理环境较差的地区,增加大股东个数更有利于提高信息披露质量.     

我国证券市场参与的地区差异及影响因素研究

本文利用我国31个省市(区)2004年的数据,分析我国证券市场参与率的地区差异及其影响因素.研究发现:(1) 我国公众通过直接方式持有股票居民的比例较低;(2) 各省市(区)直接参与率差异较大,呈现出明显的"东高、中西低"特征;(3) 直接参与率与当地人均收入、上市公司数量、证券公司营业部数以及城市化率显著正相关,而与当地人口受教育水平没有显著的正相关关系.这些结论可以为我国证券市场现阶段的改革与发展提供一定借鉴.     

格雷数序列对布尔函数的化简

本文在格雷码有权化的基础上建立了格雷数序列的概念，给出了格雷数序列的形成规则，讨论了格雷数序列化筒布尔函数的方法     

从数字表现看日本文化

本文试着从日语中一些带数字的表现来简析日本文化的一些特色。