基于Petri网的微博网络信息传播模型

微博网络中的信息传播模型是分析用户行为,找出传播路径,确定领袖人物,发现舆情热点等研究的基础。虽然多种不同角度的信息传播模型已经得到广泛研究,但缺乏对信息动态传播过程的直观描述。本文基于Petri网的结构和特征,针对微博网络信息传播过程,提出了一种简单直观的描述模型,该模型首先对微博网络的信息动态传播过程中的对象进行结构化描述。本文根据微博网络的用户结构关系,并利用Petri网的相关理论,形式化解释和定义信息传播基本对象,从而更加直接描述了微博网络中的转发、评论、回复等多种用户行为。在此基础上,本文利用Petri网能够描述信息流动问题的特征,结合颜色Petri网和时延Petri网,从Petri网系统的角度表示信息动态传播路径,并研究网络的动态性质和传播条件,使得信息传播模型更加真实地模拟信息传播情况。最后本文分析信息传播算例和新浪微博真实数据实验,验证了模型的有效性和可行性,为舆情态势分析以及用户行为的研究提供帮助和支持,同时也为其它社交网络信息传播的用户行为描述提供了新的思路。     

Social Skills in Children Adopted From Socially-Emotionally Depriving Institutions

This study assessed social skills in post-institutionalized (PI) children with respect to age at adoption, age at assessment, and gender. Parent ratings of social skills (Social Skills Rating System) and behavior problems (Child Behavior Checklist) were obtained for 214 children and 127 adolescents who were adopted from socially-emotionally depriving Russian institutions. Results showed that children adopted before 18 months of age have better social skills than those adopted after this age; those assessed in childhood demonstrate better social skills than those assessed in adolescence. PI females, especially later-adopted adolescents, have particularly poor social skills. Children with poor social skills tend to have higher rates of behavior problems.     

科研团队信任对团队创新绩效的影响研究

构建以知识共享和团队创新氛围为中介变量的科研团队信任对团队创新绩效影响的概念模型,以89个科研团队中的545名科研人员为研究样本,利用多层线性回归方法对相关假设进行检验。研究发现：科研团队信任能够显著影响团队整体的创新绩效,且知识共享和团队创新氛围在科研团队信任与团队创新绩效间起中介作用。这表明科研团队管理者应当积极关注团队内部科研人员之间的人际互动因素,重视营造和谐、信任的团队创新氛围,实现团队的知识共享,进而促进整个科研团队的创新绩效不断提升。     

基于知识创新的企业战略制定过程与群体创造行为分析

从知识创新的视角重新审视和分析战略制定的过程,提出了基础知识分析—战略缺口分析—战略选择与决策的理性战略制定行为模式,同时,将战略制定过程和知识创造过程整合为战略制定—知识创造矩阵,指出战略制定过程是基于隐性知识转移和群体知识创造的持续活动。     

大学新生心理及行为探讨

初入大学校园的新生,因为很多原因而导致适应不良,有的引发严重的心理疾病。根据自身的工作实践,结合大学新生入学后的心理特点,分析普遍存在的心理问题,并提出了解决新生心理问题的对策,便于学生更好地学习和发展。     

Retrospective Paternal and Maternal Parenting Styles,Regulatory Self-Efficacy and Adolescent Risk Taking

This study aims to calculate a scaled risk-taking behavior index and to test a model in which maternal and paternal parenting styles affect risk-taking behavior with a mediation of adolescents’ regulatory self-efficacy. Participants were 816 adolescents (44% males) responding to a self-report questionnaire about their risk-taking behavior, regulatory self-efficacy, and retrospective memories of paternal and maternal parenting styles. Results suggested an item rating in the index showing that behaviors considered less risky referred to alcohol use and the unplanned first sexual intercourse, whereas behaviors considered more risky referred to the lack of use of contraceptives and the age of the first sexual intercourse. Results revealed a significant indirect effect of authoritative and authoritarian styles on risk-taking behavior. These styles shaped the adolescents’ regulatory self-efficacy, which in turn predicted adolescent risk-taking behavior. Results underline the complex interplay of relationships between parents and their children.     

Assessing social work and nursing students’ intentions to work with dying patients

This study assessed social work and nursing students’ intentions to provide end-of-life care, based on the Theory of Planned Behavior. A total of 181 social work and nursing students completed a questionnaire examining intentions to provide end-of-life care, attitudes, subjective norms, perceived control, death anxiety, subjective knowledge, and sociodemographic characteristics. Students manifested a moderate level of intentions to provide end-of-life care, with nursing students indicating higher levels of intentions than social work students. Multiple regression analyses revealed that attitudes, subjective norms, and previous experience were the main predictors of intentions to provide end-of-life care. Recommendations for academic programs are discussed.     

Employees’ prosocial behavioral intentions through empowerment in CSR decision-making

This study theorizes and empirically tests a conceptual framework to understand how a company can better motivate its employees to carry out persistent prosocial behavior and develop positive organization-employee relationships through corporate social responsibility (CSR) involvement. A managerial approach, employee participative decision making in CSR, is examined for its impact on the prosocial behavioral outcome among employees and the relational outcome for the organization. Furthermore, a psychological mechanism that emphasizes employees’ perceived need satisfaction is examined as the underlying explanation that drives the effectiveness of the managerial approach. The study results support that empowering employees to co-construct CSR decisions with top management is effective in satisfying employees’ basic psychological needs for autonomy, competence, and relatedness. This in turn increases the employees’ intention to maintain long-lasting involvement in CSR and improves their relationships with the company. This study provides important implications for public relations professionals and organizational leaders on how to improve their internal CSR communication and involvement practice and cultivate desirable organization-employee relationships.     

Leader-member exchange as a linking pin in the idiosyncratic deals - Performance relationship in workgroups

In the current investigation, idiosyncratic deals (i-deals; individualized work arrangements) are modeled as differentiated resources that shape leader-member exchange (LMX) relationships in workgroups. We integrate literature on leader-member exchange (LMX) with research on i-deals to argue that employee evaluations of i-deals received from the grantor –typically the leader- enhance employee perceptions of LMX, which in turn become instrumental in generating positive performance outcomes. Furthermore, because workgroup characteristics have potential implications on the relationship between a deal grantor and the deal recipient, drawing upon social identity theory of leadership, we reason that the i-deals-LMX relationship is affected by the overall value congruence among the group members. Cross-level moderated mediation analyses on multi source data obtained from 289 employees nested in 60 workgroups showed that the mediational role of LMX in the i-deals to performance outcomes relationship was weaker in high value congruence groups.     

融资融券交易行为及其收益可预测性研究

2010 年融资融券业务的开通,不仅为中国市场投资者引入卖空机制,同时也为投机性交易者提供杠杆放大机制． 不同于以往主要从制度变迁视角研究卖空机制, 本文从微观行为视角,系统研究信用账户投资者融资融券交易行为及其市场可预测性． 基于 2011 年 12 月 ～ 2015年 8 月的样本数据,研究发现,信用账户投资者在股票价格上涨后增加融资买入, 而在股票价格下跌后提高融券卖出,即采取“追涨杀跌”的投资策略． 进一步研究表明, 融资交易能预测正的未来收益,而融券交易能预测负的未来收益． 此外,融资交易提高了未来股价崩盘风险,融券交易则可以降低未来股价崩盘发生的可能性． 本文的研究揭示了中国市场投资者融资融券微观交易行为及其市场影响,并为进一步规范发展融资融券业务提供理论依据．