知识库维护技术的研究

针对采用人工方法维护知识库存在的弊端，对知识库在一致性和完整性方面存在的问题进行了分析，给出了循环规则，冲突规则，等价规则，子规则，遗漏规则，不可达子句和死子句的定义及其检查方法。     

网络安全传输通道的设计与实现

比较流行的网络应用(比如WEB应用、TELNET应用)都已经提供了满足安全要求的增强版本，但特定的网络应用则没有。为了满足这些特定网络应用对网络通信的安全需求，在借鉴SSL／TLS协议的基础上，设计和实现了一个较简单的网络安全传输通道系统，它对相关系统的研发具有一定的示范作用和指导意义。     

基于PCI总线雷达回波信号的模拟与采集

针对某毫米波探测器研制的需求，介绍了所设计的ADPCI2002，实现了对雷达回波信号模拟与采集。着重讨论了大容量数据缓存的实现、模拟外触发电路的实现、用突发方式来实现PCI总线的高速数据传送、信号模拟时的滤波问题以及板级的信号完整性设计等问题。实测结果表明，该设计工作稳定正常，能够实现对步进频率、调频步进、脉冲多普勒等雷达信号的模拟与数据采集。     

构建户外广告的街道景观

通过对户外广告的实地调查研究，更加充分地认识到户外广告在街道景观构建中发挥的重要作用．同时深入剖析了现实中户外广告存在的种种问题，针对这些问题提出了行之有效的建议，旨在使户外广告在街道景观中发挥更好的造景作用．     

低应变反射波法在预应力管桩完整性检测中的应用

通过对预应力管桩低应变实测波形分析、并配以图片，说明检测中的一些波形特点以及实际应注意的一些要点。管桩断桩的方式是极其复杂的，在测试过程中既要从波形上分析、同时还要实地查看桩身情况，结合开挖情况来综合判定。     

基于MSP430F149的列车完整性监测系统设计

本文介绍了以MSP430F149单片机为核心设计的列车完整性监测系统,详细阐述了该系统的硬件结构、软件设计、抗干扰措施和应用前景等。     

基于Cadence仿真工具的高速PCB系统设计

从传输线理论人手分析由于阻抗不匹配原因引起的一系列信号完整性问题，并针对反射问题讨论了几种消除反射的端接方法，使用cadence公司的Allegro PCB si（SpecctraQuest）工具进行仿真，效果比较理想。     

Is the number of trials a primary determinant of conditioned responding?

Acquisition of conditioned responding is thought to be determined by the number of pairings of a conditioned stimulus (CS) and an unconditioned stimulus (US). However, it is possible that acquisition is primarily determined not by the number of trials but rather by quantities that often correlate with the number of trials, such as cumulative intertrial interval (ITI) and the number of sessions. Four experiments examined whether the number of trials has an effect on acquisition of conditioned responding, once cumulative ITI and number of sessions are equated. Results of the experiments with rats and mice favor the hypothesis that over an eightfold range, variation in number of CS-US pairings has little effect. It is suggested that learning curves might more accurately be plotted across cumulative ITI or number of sessions, and not across number of trials. Results pose a challenge to trial-centered accounts of conditioning, as demonstrated by simulations of the Rescorla-Wagner model, a simplified version of Wagner's standard operating procedure model (SOP), and Stout & Miller's sometimes competing retrieval model (SOCR). A time-centered account, rate estimation theory (RET), predicts the main finding but has trouble with other aspects of the learning process more easily accommodated by trial-centered models. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An Investigation of Group Leaders' Intentions.

Stimulated recall methods were used to assist 34 group leaders in recalling their intentions (i.e., purposes, plans, goals) in relation to interventions they made in a group session. A total of 835 intentions were reported by the leaders and were categorized into 6 separate intention categories by trained judges. The categories included directing the group, gathering information and assessing members, challenging members, attending to and validating members' experiences, directing self, and promoting connections and interactions among group members. Multidimensional scaling procedures revealed 4 intention clusters: Promoting Insight/Change, Planning and Guiding, Attending, and Assessing Growth. Limitations of the study are addressed, along with implications for future research and group leader training. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

静压PHC管桩桩基偏位原因分析及处理

结合工程实例,从地质勘探质量、场地地质条件、现场管理及施工质量控制等方面,分析了PHC管桩桩基偏位的原因,并针对实际工程中出现的桩基质量问题,介绍了具体的处理方案及其实施情况.