Children's emotion regulation: Self-report and physiological response to peer provocation.

The authors examined the notion that children's emotion regulation (ER) is a uniform skill by (a) investigating the concordance between self-report of ER and physiological measures and by (b) examining ER in a specific context (e.g., peer provocation) and context-free manner (e.g., during a semistructured interview of ER abilities). Seventy-two children in middle childhood (average age = 9 years) participated. Time-locked measures of heart rate reactivity and recovery were obtained in response to provoking comments, and vagal regulation was measured throughout the provocation session. Children who reported greater dysregulation showed increased heart rate reactivity to provocative comments (i.e., steeper heart rate slope) but no difference in heart rate recovery. The context-free but not the context-specific self-report measure was associated with a failure to suppress vagal tone. Implications for ER measurement and children's peer relations are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Same-gender and cross-gender peer acceptance and peer rejection and their relation to bullying and helping among preadolescents: Comparing predictions from gender-homophily and goal-framing approaches.

The relation between bullying and helping and same-gender and cross-gender peer acceptance and peer rejection was examined in a sample of preadolescents aged 11 and 12 years (N=1,065). The authors tested predictions from a gender-homophily approach vs. predictions from a goal-framing approach in which acceptance and rejection are seen as being generated by approach and avoidance goals, respectively. For preadolescents, both approaches predicted a central role for gender, but the gender-homophily approach predicted symmetrical effects for acceptance and rejection, whereas the goal-framing approach predicted strong asymmetries. The data supported the goal-framing approach. The most important findings were that for preadolescents, acceptance is much more frequent and much more gendered than rejection; the absolute impact of helping on acceptance is much larger than that of bullying (and vice versa for rejection); for acceptance, there is a prototypicality effect (i.e., boys accept bullying girls better than nonbullying girls, and girls accept helping boys better than nonhelping boys); and for acceptance, there is a cross-gender ignorance effect (i.e., boys ignore helping in girls, and girls ignore bullying in boys). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

试论国有企业摆脱困境走向市场的对策

市场经济的发展,要有一个与之相适应的充满生机和活力并积极参与市场竞争的企业主体作为其微观基础。而我国的国有企业由于正处在从计划经济体制向市场经济体制的转变过程中,当前的处境仍十分艰难。国有企业如何摆脱困境,走向市场,这是一个需要花大力气进行研究的重要社会课题。本文从确立自主企业制度、明晰产权关系、选聘管理人员、减轻国有企业社会负担等多个方面进行了全面系统的对策研究。     

基于m叉树与DMDH假设的组密钥协商协议

针对动态对等通信环境下为提高群组密钥协商高效性与可扩展性,提出一种基于m又树与DMDH假设的组密钥协商协议.该协议将m叉树结构与DMDH假设有机集合,通过协商可变m确定密钥树,从多线性映射簇中选择与之对应的多线性映射,进行群组密钥协商计算.同时可变m叉树结构来平衡该协议的计算开销与通信开销,更好地同时适用局域网与广域网环境,与TGDH、GDH相比,其有更好的安全性,高效性与可扩展性.     

一种基于概率统计方法的P2P系统信任评价模型

现有的P2P系统信任评价模型正面临着两种恶意节点的攻击行为--策略性欺骗和不诚实推荐,严重影响了模型计算节点信任评价的准确性和有效性.针对现有模型存在的不足,提出了一种基于概率统计方法的信任评价模型.该模型借鉴人类社会中主观信任关系的概念,依据直接经验和反馈信息,利用概率统计方法分别计算节点的直接信任和推荐信任,并通过区分直接经验的重要程度,区分反馈信息及其推荐者的可信度,提高信任评价模型的有效性.仿真实验分析说明,与已有的信任评价模型相比,该模型能够更有效地抑制策略性欺骗和不诚实推荐的威胁,特别是复杂的协同作弊方式对系统的攻击.     

对等网的快速路由模型

在DHT基础上建立一种快速的自组织路由模型(FSRM),设计了该模型的路由查找方法,节点加入与离开机制。同时,针对扰动环境下临近节点选择问题,提出稳定性阈值度量的方法,保证了对等网的快速路由和快速收敛。并在仿真测试中对该模型的性能进行了分析,证明该模型在收敛时间,节点查询速度,和对扰动的适应性方面优于传统的模型。     

Examining student responses to frequent bullying: A latent class approach.

Bullying is a major concern in schools, yet there has been limited research examining the ways in which students respond to frequent victimization by their peers. The current study explored whether there are discrete groups of children who display similar patterns of responses to frequent bullying. We also examined the associations between the patterns of responding, characteristics of the victimization (form, chronicity, and perpetration of bullying), and co-occurring internalizing and externalizing symptoms. Latent class analysis regarding response strategies was conducted on data from 4,312 frequently victimized middle and high school students. The results revealed 4 common patterns of responses, including passive/low, active/support-seeking, aggressive and an undifferentiated/high pattern. The patterns of responses were differentially related to internalizing and externalizing symptoms, such that the children with the undifferentiated/high pattern were most likely to experience social–emotional problems and were more likely to experience indirect forms of victimization. Implications for future research on interventions with victimized children are discussed. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

基亏Snort系统的局域网P2P流量识别系统

针对当前P2P流量消耗大量带宽,降低接入网络性能的问题,采用规则匹配的方法,借助入侵检测系统Snort的链表结构,设计了一种局域网P2P流量识别系统,该系统综合使用端口识别和特征匹配两种传统方法进行检测,并采用一种动态规则匹配机制,增加选项索引链表,对规则匹配的次序进行动态调整,从而提高规则匹配的速度。实验结果表明该系...     

同行评估在我国核电行业的应用与发展

对国内外各种不同的评估方法进行对比分析,以中国核工业集团公司（以下简称＂中核集团＂）的相关实践为主线,对现有的核电同行评估进行了简要的对比分析,描述了同行评估在中国核电行业的应用与发展,并提出了若干改进建议与同行分享。     

上海中心大厦结构第三方独立审核

上海中心大厦建筑高度632m,为目前在建的国内最高建筑之一。其建筑形体复杂,结构安全引人关注。笔者作为第三方独立审核方,参与了塔楼结构的全过程设计与施工。从业主顾问咨询的角度,介绍了结构体系、风荷载取值、基础沉降分析、巨型框架的布置和受力特点以及节点构造等方面开展的审核工作。工程实践表明,结构第三方审核工作对本工程是必要的,对结构的安全性、经济性以及合理性起到了验证和补充作用。最后,对超高层建筑结构设计中的若干问题进行探讨,并提出实现第三方独立审核的价值和作用的一些建议。