大型水源水库防恐监测及应急系统

在恐怖活动形势日趋严峻的今天，大型多功能综合性水源水库的防恐安全问题日渐突出．在分析水库建筑物安全物理破坏和突发性水质污染破坏特点的同时，从库区一流域角度提出构建大型水源水库防恐监测及应急系统框架的思想，并且探讨了具体实施方法和内容，为流域性防恐安全体系的实现进行了理论性探讨．     

新丰江大坝监测自动化系统的成功实施与现场维护

本文介绍了新丰江大坝监测自动化系统从失败走向成功的实施过程，强调了良好的工作环境以及精心的现场维护在大坝监测自动化应用中的重要性。     

模糊环境的表示及机器人轨迹规划

本文利用模糊集理论，提出一种非确定环境的描述方法，并且针对机器人在该类环境中的避障轨迹规划，建立了相应的决策函数和规划策略，最后，给出在ＰＣ－３８６计算机上的仿真试验结果。     

JETS,PLUMES AND BUOYANT JETS IN STATIC ENVIRONMENT

Turbulence represents an essential aspect in atmospheric and oceanic circulations.In particu-lar,it is a preponderant factor in the dispersion of pollutants of artificial or natural origin.Thevertical turbulent jets,plumes and buoyant jets discharging into static environment is one of themost important and basic flow patterns related with the environment pollution.These flows havenumerous important applications,for example,thrust augmentors,waste disposal plumes fromstacks and combustion systems,and significant problems of turbulent diffusion.     

温和条件下碳氢单键直接官能团化的新方法

介绍了近年来国内外在温和条件下碳氢单键直接官能团化反应的最新进展。官能团化反应的特点是，在常温常压和紫外光促进下，用过渡金属配合物催化碳氢单链活化，使烷烃、芳烃等烃类的碳氢单键直接官能团化，从而达到直接利用各种烷烃及芳烃作为化工原料合成有机化工产品的目的。通过紫外光催化可以使反应在常温常压下进行，能克服传统工艺能耗高、选择性差的缺陷。经不断深入研究，该反应可望在２１世纪成为环境友好的有机合成工艺。     

一种评价机器磨损和润滑油质量的新方法

提出用表征大型机械系统健康状态的相对劣化度作为监控机械磨损状态和油品质量变化的综合判断指标，以便结合反映机器工作状态的其它因素，共同评定机器的健康状态。以柴油机为例，对监测得到的柴油机润滑油的铁谱参数、磨损金属元素含量和油品理化性能等数据进行综合分析和处理，所得相对劣化度的变化趋势，较准确地反映了柴油机的工作状况。该方法不仅简单实用，而且便于将油液监测技术与其他监测技术（如振动诊断技术）结合起来，用一统一指标描述机器的健康状况，达到监测和预报的目的，为开发基于多种监测技术的智能诊断系统打下基础。     

PXJ—Ⅱ排险机器人

介绍了一种可在危险环境下作业的遥控机器人－－ＰＸＪ－Ⅱ排险机器人，分析了其功能指标及结构，简述了以武器系统和传感器为主的机器人辅助系统及其实用意义。     

The greenhouse effect; Impact upon and the role to be played by construction

The authors highlight several possible ways in which the construction industry could lower present emissions of the greenhouse gas, carbon dioxide. It is an excellent discussion document and is recommended reading.     

A damage identification technique for CF/EP composite laminates using distributed piezoelectric transducers

In this study, a damage identification approach was developed for carbon fibre/epoxy composite laminates with localized internal delamination. Propagation of the Lamb wave in laminates and its interaction with the delamination were examined. The fundamental symmetric Lamb wave mode, S₀, and the lowest order shear wave mode, S₀^′, were chosen to predict damage location. A real-time active diagnosis system was therefore established. This technique uses distributed piezoelectric transducers to generate and monitor the ultrasonic Lamb wave with narrowband frequency. The two-way switches were employed to minimize the number of transducers. A signal-processing scheme based on the time–frequency spectrographic analysis was utilised to extract useful diagnostic information. Also, an optimal identification method was applied on damage searching procedure to reduce errors and obtain the diagnostic results promptly. Experiments were conducted on [0/−45/45/90]_s CF/EP laminates to verify this diagnosis system. The results obtained show that satisfactory detection accuracy could be achieved.     

水电厂计算机监控软件中的数据库管理系统

对水电厂计算机监控软件中的数据库管理系统进行分析研究，采取自行开发实时数据库管理系统和商用数据库管理系统相结合，并将二者紧密集成，集中管理实时数据和非实时数据，为应用软件提供了统一透明的SQL操作接口．该数据库管理方案具有快速响应、可扩充性好、使用方便等特点．