Associations Between Dopamine D2 Receptor (<Emphasis Type="Italic">DRD2</Emphasis>) Gene,Maternal Positive Parenting and Trajectories of Depressive Symptoms from Early to Mid-Adolescence

Using data from the Longitudinal Study of Chinese Children and Adolescents (LSCCA), this study is the first to examine the roles of the dopamine D2 receptor (DRD2) gene polymorphisms (i.e., TaqIA and A241G) and maternal positive parenting at ages 10 and 11 years in the trajectories of depressive symptoms from early to mid-adolescence (ages 11 to 16 years). In a sample of 1090 Chinese adolescents (50% girls), three trajectories of depressive symptoms were identified: (i) low-stable (36.1%), (ii) moderate-increasing (44.5%), and (iii) high-increasing (19.4%). A241G AA homozygotes and youth exposed to lower levels of maternal positive parenting were both at increased odds to follow the high-increasing vs. low-stable trajectory. Moreover, the A241G polymorphism interacted with maternal positive parenting to distinguish the moderate-increasing trajectory from the high-increasing and the low-stable trajectories. For A241G G-allele carriers, but not AA homozygotes, exposure to high quality of maternal parenting decreased the odds to follow the high-increasing vs. moderate-increasing trajectory of depressive symptoms. For AA homozygotes, but not G-allele carriers, high quality of maternal parenting increased the odds to follow the low-stable vs. moderate-increasing trajectory. The DRD2 TaqIA polymorphism had neither a direct nor an interactive effect with maternal positive parenting on trajectory membership. The current findings highlight the importance of investigating gene-by-environment interactions (G × E) in trajectories of depressive symptoms over adolescence, and support a developmental versus static nature of G × E effects.     

组织中的政治技能及相关研究

政治技能是个体在工作中影响他人以实现组织目标的能力,对个体的工作绩效和某些工作态度、缓解工作中压力带来的紧张感等具有一定的作用。个体的洞察力、控制、亲和力、主动影响及发展经验被视为政治技能的影响因素,通过实践练习、替代学习等方法可实现政治技能的培训和开发。在未来的研究中,对政治技能概念的理解、测量多源性等方面的问题还需要进一步的探讨     

短期目标和长期目标设置对投篮成绩,努力程度和状态焦虑的影响

这篇论文调查了短期目标和长期目标对投篮成绩、努力程度和状态焦虑的影响．８７名被试被随机分配到以下一个组中：（１）短期目标组,（２）长期目标组,（３）短期和长期目标结合组,（４）“尽力做好”组。实验时间为７周。研究结果显示：（１）结合目标组、短期目标组和长期目标组的投篮成绩显著优于“尽力做好”组;（２）结合目标组的投篮成绩提高幅度最大,其次是短期目标组和长期目标组,最后是“尽力做好”组,（３）结合目标组、短期目标组和长期目标组的投篮成绩随练习次数的增加而显著提高,（４）努力程度是结合目标组和短期目标组投篮成绩提高的调节变量。     

中国人眼光谱相对视亮度函数的研究——Ⅲ.不同大小视野对V(λ)的影响

本实验采用闪烁光度法。本实验的视野是7°40′和20′,受试者5人,均属色觉正常者。年龄在30至50岁之间,具有一定实验经验。实验波长从420—700nm,其间隔为20nm,实验的亮度级为30cd/m~2。 四种视野相比较,其中2°视野V(λ)曲线引自明视函数,10°视角的材料来自CIE1964年补充标准观察者?10(λ),其结果:峰值的短波一侧随着视野的增加V(λ)值显著增加,而在峰值的长波一侧则无显著变化。     

Lenin's relationship to the ideas of physicists

History and the philosophy of science have played a very important role in dialectical materialism; their results have been destined to support the correctness of the ideas of Marxist philosophers, especially in their application in historical materialism.From this point of view, the circumstances of the origin of the works of the Marxist classics cannot be neglected: Engels wrote hisDialectics in Nature in the period of classical physics, and Lenin published hisMaterialism and Empirio-Criticism at the beginning of the 20th century when our modern physics first began: shortly before the publication of Lenin's book, Röntgen and Becquerel discovered new kinds of radiation, Balmer published his ideas concerning the regularity of the hydrogen spectrum, Plank wrote his first articles about the elementary quantum and Einstein published his three famous articles (1905).During this period, physicists themselves did not understand their results, so important for the further development of physics. In this atmosphere of uncertainty, Lenin — a lawyer and politician — undertook his attempt to criticise the ideas of physicists.We trace one misinterpretation by Lenin of these ideas from books by Mach and Helmholtz.     

智力落后的实验研究及普查结果的分析

智力落后,就其本身来说,不是一种综合症,而是许多不同病因导致中枢神经系统受到损伤,表现为大脑功能发生障碍的一种症状。它发生于发育阶段,是以智力低下和社会顺应不良为特征的。 智力落后的患病率在全世界范围都很高,虽然由于社会要求的标准及年龄取样不同而不完全一致。智力落后是当今社会面临的最重要的社会和医学问题之一,许多国家     

论医疗事故的法律责任

随着我国医疗卫生体制的改革、法制建设的发展,特别是新《刑法》的施行、《执业医师法》的颁布,关于医疗事故中医方行政、民事和刑事法律责任的法律规定正逐步健全。为了引起医方的高度重视、提高医疗质量、减少医疗事故的发生、有效地避免触犯法律,故对医疗事故概念的界定、构成、免责情形及三种具体法律责任作了较为系统的阐述。     

真实型领导：概念、测量、形成与作用

频发的道德丑闻和管理渎职现象使真实型领导受到了前所未有的关注。基于近十年来国、内外重要理论文章和67项实证文章, 本文对真实型领导研究进行了系统梳理与评析。总体来看, 研究者主要从特质/行为视角和过程视角界定真实型领导。真实型领导的测量已有标准化工具, 并在测量主体和方式上呈现多样化趋势。真实型领导受个体因素和情境因素影响, 也会通过积极组织行为学、社会学习、社会认定和社会交换机制对个体、团队和组织产生积极影响。未来研究应深入讨论真实型领导的概念、结构和测量问题, 对其影响因素、影响效果和作用机制做进一步探索, 并适时进行跨文化和本土化考察。     

Two-Way Regularized Fuzzy Clustering of Multiple Correspondence Analysis

Multiple correspondence analysis (MCA) is a useful tool for investigating the interrelationships among dummy-coded categorical variables. MCA has been combined with clustering methods to examine whether there exist heterogeneous subclusters of a population, which exhibit cluster-level heterogeneity. These combined approaches aim to classify either observations only (one-way clustering of MCA) or both observations and variable categories (two-way clustering of MCA). The latter approach is favored because its solutions are easier to interpret by providing explicitly which subgroup of observations is associated with which subset of variable categories. Nonetheless, the two-way approach has been built on hard classification that assumes observations and/or variable categories to belong to only one cluster. To relax this assumption, we propose two-way fuzzy clustering of MCA. Specifically, we combine MCA with fuzzy k-means simultaneously to classify a subgroup of observations and a subset of variable categories into a common cluster, while allowing both observations and variable categories to belong partially to multiple clusters. Importantly, we adopt regularized fuzzy k-means, thereby enabling us to decide the degree of fuzziness in cluster memberships automatically. We evaluate the performance of the proposed approach through the analysis of simulated and real data, in comparison with existing two-way clustering approaches.     

教师问题行为的初步探索

通过对现有中学教师问题行为概念的分析整合和访谈,初步确立了教师问题行为的基本维度,以此为基础编制问卷,并对1274名中学教师进行测查,采用探索性因素分析和验证性因素分析对教师问题行为的结构进行剖析.结果表明:(1)中学教师的问题行为可以分为三个维度:认知问题、行为问题与适应问题;(2)这三个维度由10个因子组成,它们是粗暴行为、教学观、放任敷衍行为、职业道德、学生观、职业观、职业适应、情绪、人际关系和不公正感受;(3)本研究自编的教师问题行为问卷具有较好的信度、效度和可用性.