底部燃烧减阻性能的若干参数影响研究

介绍了采用部分予混合可燃气为介质的底排燃烧实验研究结果．包括排气率、来流马赫数、喷口尺寸、排气温度和旋转排气螺旋角等参数和对底排减阻性能的影响     

MODELS OF HUMAN COMMUNICATION: DIALOGUE WITH COMPUTER

A model of understanding texts of a natural language is presented, which consists of three levels. On the first level, the system uses only information in the given text. On the second level, it employs additional information from a knowledge base. On the third level, understanding is connected with some activity of the system stimulated by the available information.     

加强信息资源建设搭建数字化资源平台

文章对华北电网公司数字化图书馆的功能特点、资源建设情况及系统采用的关键技术等进行了简要介绍,从侧面论述了该数字化图书馆信息量大、专业性强、技术先进,是各类专业技术人员、管理人员日常工作中获取科技、管理知识的窗口和渠道。     

THE RELATIONSHIP BETWEEN DIAL SIZE,READING DISTANCE AND READING ACCURACY

The experiment reported suggests that the accuracy of reading a graduated scale is related to the angle subtended at the eye by the called space. There is a critical point representing about 98 per cent accuracy (for all intervals interpolated into five or less parts) below which there is a rapid fall off in accuracy and above which little improvement can be expected. Each combination of scale interval and called interval has a different critical point and from these it is possible to calculate the optimum reading distance for any dial size and vice versa. It is possible also to decide which of several alternative graduation systems is likely to be the best.

It was found that ‘ practised subjects ’—who had made more than 2000 readings on a particular graduation system—were able to read a dial at double the distance of an ‘ unpractised subject ’ both having 6/6 binocular eyesight. For ‘ practised subjects ’ with 6/12 binocular eyesight the reading distances were reduced by one fifth.     

一个领域自然语言理解的知识获取工具的设计实现

本文介绍了一个基于知识的自然语言理解系统和系统的知识库中知识的表示模式,描述了知识库中领域过程树的知识获取过程。根据领域过程树的知识表示模式,本文设计并实现了一个知识获取工具,很好地提高了领域过程树知识获取的速度和准确度。     

水压机基础梁铸件的制造

针对制造难点进行了合理的工艺设计。采取切实有效的工艺措施成功地铸造出满足设计要求的水压机基础梁铸件。     

配电网自动化—变结构耗散网络新算法

在配电变结构耗散网络中引入顶点负荷、弧负荷、顶点状态、网形，网基、耗散网络，开环变结构网络等新概念，通过研究弧结构矩阵，负荷矩阵，额定负荷矩阵，归一化负荷矩阵，网基结构矩阵，顶点状态矩阵，源点分布矩阵等数据结构，建立了基形变换和形基变换两种处理变结构的计算方法。     

Characterization of germanium implanted Si1−xGex layer

Characterization of a Si_1−xGe_x layer formed by high-dose germanium implantation and subsequent solid phase epitaxy is reported. Properties of this layer are obtained from electrical measurements on diodes and transistors fabricated in this layer. Results are compared with those of the silicon control devices. It was observed that the germanium implantation created considerable defects that are difficult to eliminate with annealing. These defects result in boron deactivation in the p-type regions of the devices, giving rise to larger resistance. Optimization of the device structure and fabrication process is discussed.     

基于关系数据库ORACLE的多媒介信息管理系统

本文介绍了一个多媒介信息管理系统的设计与实现,提出了基于关系数据库的多媒介信息一体化存取与管理方案,以及适宜的用户界面。     

电力多媒体视频会议系统故障诊断知识库建立的研究

本文从运维实际工作出发,针对现场视频会议维护经验,探索建立电力多媒体视频会议系统故障诊断知识库,对故障诊断知识库构建、知识库动态数据更新进行了详细阐述,以期提升维护人员维护效率,提高电力行业中视频会议系统的运营管控能力,使电力系统不断的发展。