Client-specific counselor self-efficacy in novice counselors: Relation to perceptions of session quality.

Two versions of a counselor self-efficacy (CSE) measure were administered to 110 prepracticum counselors: a general version, assessing perceived capability to perform basic helping skills and manage the session process with clients generally; and a client-specific version, tapping capability to perform the same behaviors with a specific, current client. Client-specific CSE was found to (a) relate moderately to strongly with general CSE over the course of four counseling sessions, (b) increase significantly over sessions, and (c) account for unique variance in counselors' evaluations of the quality of their sessions. Although it was not a useful direct predictor of clients' session ratings, higher client-specific CSE was associated with greater congruence between counselors' and clients' perceptions of session quality. Implications for further research and training are considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于混合蚁群算法的Web用户会话聚类

会话聚类是一种重要的Web使用挖掘技术,旨在发现相似的用户行为,这是目前电子商务中的热点问题之一。该问题的难度在于要对大规模的会话进行聚类,这些会话被表示成高维向量,加大了对算法高效性的要求。提出了一种ACO和PSO相结合的算法进行会话聚类分析。实验结果表明该算法与ACO算法、PSO算法、K-means算法相比,具有更好的性能。     

反网络盗用及计费机制的校园网络结构设计

CERNET基于用户流量收费的机制给校园网的管理带来一定的困难,高校校园网 现有计费及反网络盗用技术解决措施存在缺陷,使用效果不理想,该文提出了一种基于新的 反网络盗用及计费机制的校园网络设计方案,较好地兼顾了性能、安全、费用因素。     

基于SIP的宽带实时多媒体通信研究与实现

介绍了会晤创建协议(SIP),提出了基于SIP的应用系统——SRMCS,针对该实时多媒体通信系统,分析了其音频模块的实现和背景噪音的处理、视频模块的实现和视频的流畅播放,并就实时多媒体通信系统的关键问题——视、音频同步给出了可行的解决方案,最后还探讨了本系统中信令流和媒体流的传输方式。     

一种适于受限资源环境的远程用户认证方案的分析与改进

该文讨论了Fang等人(2011)新近提出的一个安全高效的基于智能卡的远程用户口令认证方案,指出原方案无法实现所声称的抗离线口令猜测攻击,对平行会话攻击和已知密钥攻击是脆弱的,并且存在用户口令更新友好性差问题.给出一个改进方案,对其进行了安全性和效率分析.分析结果表明,改进方案弥补了原方案的安全缺陷,保持了较高的效率,适用于安全需求较高的资源受限应用环境.     

基于Spi演算的密码协议的控制流分析

基于Spi演算和控制流分析,提出了一个密码协议的新分析方法。随后利用该方法对Beller-Chang-Yacobi MSR协议进行了分析,通过证明该协议已知的漏洞,说明该方法是正确的,并通过更深入的研究和分析,证明了该协议在并行会话攻击下是不安全的,基于此对该协议进一步改进,改进后的协议是安全的。     

基于代理的网络会话取证与监控系统

在分析现有网络会话记录系统存在问题的基础上,提出一种基于代理的分布式网络会话取证和可视化监控体系结构,设计了一种新方法可巧妙实现网络会话的解析,即通过修改网络服务客户端正的底层接收部分,使其不从操作系统的TCP／IP协议栈获取报数据,而是从捕获的报中接收数据,然后从其输出中获得解析结果。介绍了已实现的基于代理的网络会话取证和可视化监控系统的总体设计与组成,讨论了实现该系统的关键技术。     

Experimental evaluation of the sensitivity to fuel utilization and air management on a 100 kW SOFC system

The tubular SOFC generator CHP-100, built by Siemens Power Generation (SPG) Stationary Fuel Cells (SFC), is running at the Gas Turbine Technologies (GTT) in Torino (Italy), in the framework of the EOS Project. The nominal load of the generator ensures a produced electric power of around 105 kW_e ac and around 60 kW_t of thermal power at 250 °C to be used for the custom tailored HVAC system.     

改进的Web日志数据预处理技术

介绍Web日志挖掘预处理过程中一些特殊情况的处理方法,在会话识别阶段给出一种基于过滤框架网页与会话重组相结合的会话识别方法,在会话识别之前进行框架网页的过滤,根据传统的会话识别方法构造初始会话集,使用会话重组算法对初始会话集进行优化。实验结果显示,该方法提高了会话识别的质量。     

Temporal Specificity of Extinction in Autoshaping.

Three experiments investigated the effects of varying the conditioned stimulus (CS) duration between training and extinction. Ring doves (Streptopelia risoria) were autoshaped on a fixed CS-unconditioned stimulus (US) interval and extinguished with CS presentations that were longer, shorter, or the same as the training duration. During a subsequent test session, the training CS duration was reintroduced. Results suggest that the cessation of responding during an extinction session is controlled by generalization of excitation between the training and extinction CSs and by the number of nonreinforced CS presentations. Transfer of extinction to the training CS is controlled by the similarity between the extinction and training CSs. Extinction learning is temporally specific. (PsycINFO Database Record (c) 2010 APA, all rights reserved)