基于性能反馈的PSO算法速度上限调整策略

速度上限是影响微粒群算法性能的一个主要参数。针对现有调节策略存在参数统一设置、与微粒性能无关等缺点,本文提出一种基于性能反馈的调整策略,使得速度上限能随着个体性能的改变而动态调整,从而更加真实有效的模拟了鸟类觅食的群体行为特征。仿真结果表明该算法能较好地提高微粒群算法的计算效率。     

我国公务员绩效评估公平性的影响因素研究

本论文以国家公务员为对象,从背景、核心自我评价和组织文化的层面来探讨公务员绩效评估公平性的影响因素。结果表明,在公务员个人属性变量上,性别、职级、收入、工龄和年终绩效等级对绩效评估公平性上存在显著影响;单位组织文化各因子特别是诚信公正因子对公务员绩效评估公平性的影响最大,核心自我评价各因子对公平性的影响不大。     

Offspring Effects of Prenatal Alcohol Exposure from Birth to 25 Years: The Seattle Prospective Longitudinal Study

Before alcohol was generally known to cause birth defects, NIAAA in 1974 began funding a population-based Seattle study on alcohol use and pregnancy outcome. Women receiving prenatal care by mid-pregnancy were recruited (N = 1,529) and interviewed at home. Approximately 500 offspring exposed to a range of alcohol levels were examined on 11 occasions between day 1 and 25 years. Neuropsychological and neurobehavioral performance measures are correlated with prenatal alcohol dose, without substantial confounding by socio-demographic or rearing conditions, smoking, nutrition, or other drugs. Deficits in attention, arithmetic skill, spatial-visual memory, and IQ, as well as increased alcohol problems and psychiatric disorders are among offspring outcomes correlated at several ages with maternal drinking during and before pregnancy recognition. Findings are not confined to women who believed they had alcohol problems. Not all exposed offspring appear affected.     

初二学生解几何应用题策略类型的研究

运用作品分析法对60份初二优秀生、中等生、差生的第一学期数学期中考试卷进行分析,发现初二不同学习水平学生解数学应用题时表现出不同的解题策略类型：优秀生的解题策略属于“俯瞰型”;中等生的解题策略属于“经验型”;差生的解题策略属于“盲试型”。     

Stereotype internalization and women’s math performance: The role of interference in working memory

It has long been argued that stigmatized individuals can ultimately internalize the stereotype alleging their inferiority. The present article investigated whether the internalization of the reputation of math inferiority that targets women can affect their math performance and whether this influence is caused by a disruption of working memory. A first study showed that stereotype endorsement had a significant impact on women’s statistic performance by lowering their self-evaluation of math ability even when controlling for prior achievement. A second study was designed to assess the possibility that the lower math performance displayed by women with low self-evaluation of math ability was due to interference in working memory. Using a dual task paradigm, this study showed that indeed women with low math self-evaluation displayed more errors and spent more time solving additions than women with high math self-evaluation, but mainly on difficult items of the dual task. The findings, which are congruent with an explanation in terms of a temporary disruption of working memory, are discussed.     

同事评价教师绩效的结构验证性因素分析

考察了教师绩效同事评价结果的因素结构。通过文献回顾、开放式调查、关键事件访谈和理论分析,提出了教师绩效的结构,通过验证性因素分析验证了同事评价教师绩效的结构。发现教师绩效包含6个维度,即职业道德、职务奉献、助人合作、教学效能、教学价值与师生互动,前3个维度组成关系绩效,其余维度组成任务绩效。关系绩效与任务绩效有较高的相关。     

大学生外语焦虑、自我效能感与外语成绩关系的研究

以315名大学生为研究对象,采用t检验、相关分析、方差分析和回归分析技术探讨了不同成绩水平、不同性别、不同专业学生的外语焦虑、自我效能感和外语成绩的差异及三者之间的关系。结果表明:(1)外语成绩及格组学生的外语焦虑水平显著低于不及格组学生,自我效能感显著高于不及格组学生;女大学生的外语成绩、自我效能感及能力因子和挫折因子上的自我效能感显著高于男大学生,男女大学生的外语焦虑水平无显著性差异;文科大学生的外语焦虑水平和外语成绩显著高于理科大学生,文、理科学生的自我效能感无显著性差异;(2)外语焦虑与外语成绩呈显著负相关,与自我效能感呈显著负相关,自我效能感与外语成绩呈显著正相关,性别、专业、外语焦虑、自我效能感、效能感的能力和挫折两个因子是外语成绩的显著预测变量。     

成就目标定向与学习策略、学业成绩的关系研究综述

成就目标理论整合了曾经分离的动机研究和认知研究,是社会认知取向在动机领域中的代表性课题。文章对近十年国内外成就目标定向与学习策略、学业成绩的关系研究进行了综述,认为研究所取得的成果加深了我们对学习内在机制的理解。同时,作者也提出了这一领域应改进测量工具、进行重复验证、跨文化研究以及干预研究的主张。     

领导-部属交换的多维结构及对工作绩效和情境绩效的影响

通过两项研究,对领导-部属交换的结构及其对员工的工作绩效和情境绩效进行了探讨。采用探索性因素分析、验证性因素分析、分层回归分析等方法对来自不同企业的员工及其主管的问卷调查结果进行了分析。 结果表明,领导-部属交换是一个多维度的结构,由情感、忠诚、贡献和专业尊敬四个维度组成。单维度的领导-部属交换和多维度的领导-部属交换都对员工的工作绩效和情境绩效具有预测作用,但多维度领导-部属交换的预测作用更强。     

职业弹性对工作绩效和职业满意度影响的实证研究

摘要：职业弹性是指个体灵活应对变化的职业环境甚至是逆境的职业能力。在控制无关变量及同一方法偏差的基础上,本文考察了职业弹性的不同维度对其后效变量的影响。通过对某信息集团下属的59家电子相关企业中的324位管理人员的问卷调查,结果表明职业弹性会影响个体的工作绩效和职业满意度,管理者的职业弹性越高,其工作绩效越高、职业满意度也越高。