A statistical model for orientation mechanism

A variance components model with response variable depending on both fixed effects of explanatory variables and random components is specified to model longitudinal circular data, in order to study the directional behaviour of small animals, as insects, crustaceans, amphipods, etc. Unknown parameter estimators are obtained using a simulated maximum likelihood approach. Issues concerning log-likelihood variability and the related problems in the optimization algorithm are also addressed. The procedure is applied to the analysis of directional choices under full natural conditions ofTalitrus saltator from Castiglione della Pescaia (Italy) beaches.     

文化视野中的水族经济行为

行为或经济活动依赖于养育经济于其中的文化价值系统。在生态环境、社会经济结构、历史条件等因素的作用下,水族的小农文化特质综合体、宗族文化特质综合体、水书文化特质综合体得以形成。这些文化综合体又作为水族人的生活方式渗透于水族社会经济活动的一切方面,引导、约束、规范着人们的经济行为,形成了以稻作农业生产为主与多种生产并存的生计选择;注重宗族体系和社会关系;分配的平均化倾向与社会夷平机制;强调制度规范的遵守和对行为约束;平衡、转化、不走极端的行为倾向等经济行为特征。     

加强综合实验提高学生创新能力

在总结多年经验教训的基础上,提出了综合实验课题由教师指定改为学生自选,设置方式上集中与分散进行相结合,对专业基础课和专业课的实验课程体系进行整合,对实验室体制进行改革等改进措施.     

组织支持感对研发人员创新行为的影响：创造力效能感与积极情绪的中介作用

组织支持感对个体创新行为具有重要影响,但其中的影响机制值得深入探究。本研究基于组织支持感理论,同时从认知和情绪视角切入,将创造力效能感和积极情绪引入到组织支持感与研发人员创新行为的关系分析框架中。采用自填问卷法调查了248名研发人员,在检验了同源方差和问卷信效度的基础上,通过结构方程建模（SEM）方法检验了研究假设,结果发现：①在中国情境下,组织支持感对研发人员创新行为有显著正向影响,组织支持感及其各维度对研发人员创新行为有预测力,其中主管支持的预测力最强;②创造力效能感对研发人员创新行为有显著正向影响,并在研发人员组织支持感与创新行为间起部分中介作用;③积极情绪对研发人员创新行为有显著正向影响,在组织支持感与研发人员创新行为间起部分中介作用;④将创造力效能感和积极情绪同时纳入中介模型后,两者的中介作用完全解释了组织支持感对研发人员创新行为的影响。     

应用马氏过程预测市场行为

通过实例阐述马氏分析用以解决预测市场行为的基本思路，其结果中应用于企业经营管理决策。     

Increasing the Effectiveness of Student Evaluation of Instructor Data through a Factor Score Comparative Report

Effective student evaluation of instructor instruments must provide norm, or comparative, data to aid interpretation. This note highlights an innovative factor score comparative report. Rather than merely reporting comparative data on individual questions items, the innovative report provides comparative percentile data on the six factors underlying our thirty-three item questionnaire. The faculty indicated overwhelming support for the new report. The note also briefly mentions three other activities that are essential for student evaluation of instructor data to improve teacher effectiveness. Our goal is to stimulate other colleges to adopt the innovative norming practice once they have validated their local evaluation instruments. College-wide improvement of teaching will occur through such do-it-yourself efforts and only decision science faculty are technically qualified to lead such efforts.     

Education TEAM-SIZE EFFECTS ON BUSINESS GAME PERFORMANCE AND DECISION-MAKING BEHAVIORS

The effects of various decision-making team sizes in a complex business game were studied. Firm size was associated with nonlinear performance results and decision curves resulting in differential learning outcomes, learning sources, attrition rates, and decisionmaking behaviors. A three-member format produced the highest learning levels while two-member firms experienced only marginally significant knowledge increases. Single-member firms experienced the most bankruptcies and dropouts. A contingency view of gaming effectiveness is suggested.