论电力企业教育培训的协调发展

企业的发展和结构的优化,需要高素质的人才。企业教育培训的协调发展,对于不断提高劳动者的综合素质,学习新知识,掌握新技能,实现人力资源的优化配置至关重要。     

电子式电度表应用现状和展望

回顾了近十年来国内外电子式电度表应用的情况,着重分析了国产单相电子式电度表的发展,指出电子式电度表的的优势和保证质量的关键因素,并展望了今后的发展。     

柔性制造实训教学系统的研制

设计了基于RV-3SD机械手的柔性加工制造实训教学系统,由多台数控机床、PLC控制系统、传感器检测单元、上料机构、立体仓库等组合成自动化生产线,为高职教学与科研服务,构建了先进的技术平台,探索了高职院校工程技术中心教科研的新模式。     

A teacher friendly environment to foster learner-centered customization in the development of interactive educational packages

A good teacher is able to customize the lesson to fit the requirements and needs of the learners he or she has in the classroom. This process becomes difficult and expensive in open and distance education, where customization means availability of similar contents, presented in diversified styles. A methodology and the tools to tackle the problem by using automated course compilation have been developed in the 3DE project (Design, Development, and Delivery-Electronic Environment for Educational Multimedia). The work on course customization showed the key role of the authoring process and the related problems. This paper summarizes the methodology and describes the development environment designed to assist authors in the creation of customized educational material. The environment seeks to help teachers/authors understand the relations among pedagogical and technical aspects and provides instructions, guidelines, and assistance for the development of learning-styles-aware material. The paper focuses on the author interface of the environment with details on the pedagogical framework, the authors' guide, the classification guide, and the metadata tool.     

电线电缆专用设备进入创新期核心竞争力有待提高

我国电线电缆行业总量过剩、有效供给不足、结构性矛盾突出、投入产出低、科技创新薄弱等问题,除了迫切需要进行电线电缆行业战略性调整和解决自身创新的体制、机制等重大问题外,对为其提供90％以上工艺装备的电线电缆专用设备制造行业提出了如何适应和满足电线电缆行业产业升级、结构调整、技术创新、上品种、上水平和走向世界市场的需要,这对电线电缆专用设备制造行业既是挑战,更是机遇。     

微电网技术及发展概况

分布式发电以其投资省、发电方式灵活且不污染环境等优点,在全球范围内引起了越来越多的关注.微电网能以更具弹性的方式协调分布式电源,从而充分发挥分布式发电的优势.介绍分布式发电及微电网领域研究的诸多问题,讨论微电源、储能装置、逆变装置及隔离装置中需要研究的问题,并从电力系统应用的角度分析微电网的控制和保护、安全稳定运行、电能质量、运行及接入标准等问题.对分布式发电及微电网研究领域未来的研究方向进行总结和展望.     

电力电子器件与装置行业发展概况

产销快速增长、衔接良好,根据对电力电子行业37个企业的生产、销售情况的调查.其工业总产值(当年价)、工业销售产值和主营业务收入2006年已超过20亿元.产品销售率保持了稳步提高的势头,达到了96.12%,超出电工行业标准值0.12个百分点.     

A method for detecting the transition from corona from water droplets to dry-band arcing on silicone rubber insulators

The paper presents an investigation on the use of partial discharge (PD) as a means to study the development of leakage current (LC) on silicone rubber insulators in a salt-fog chamber. Simultaneous measurements of LC and PD on dead-end type silicone rubber insulators exposed to different combinations of electrical stress and salt-fog salinity are performed. The results show that for an electrical stress of 33 V/mm applied to the insulator, the average LC experiences gradual changes and reaches a critical level (around 1 mA) where dry-band arcing is observed after 20 minutes at 2300 /spl mu/S/cm, and after 25 minutes at 1800 /spl mu/S/cm. The corresponding PD levels reach hundreds of pC after 15 minutes at 2300 /spl mu/S/cm, and after 20 minutes at 1800 /spl mu/S/cm. For a salinity corresponding to 1800 /spl mu/S/cm and stress of 26 V/mm, the LC changes much more gradually and reaches the critical level only after approximately 60 minutes. The corresponding PD reaches hundreds of pC after 30 minutes and more than 1500 pC after 60 minutes. Pattern recognition techniques have been applied to investigate the transition from corona to dry-band arcing. The features extracted from the maximum and mean apparent charge trends are found to be useful to cluster and classify the two phenomena. Simultaneous visual observations of the discharges on the insulator surface support the results. The investigation, therefore, shows that PD is a sensitive method for detecting the transition from corona from water droplets to dry-band arcing and an alternative method for studying the early aging stage of silicone rubber insulators.     

创新培训体系——促进电力企业可持续发展

介绍电力企业在体制改革和机制创新上积极探索中企业培训存在的问题.论述了创新培训体系是企业适应电力体制不断深化中持续发展,也是留住人才的战略之一的新课题.     

从IPv4到IPv6的改进和过渡

为了克服IPv4的缺点，提出了IPv6协议。文中讨论了IPv4协议和IPv6协议的异同点，着重对照IPv4分析了IPv6的新特点。介绍了IPv6中IP层安全系统IPSec和AH以及ESP的应用方法，并对IPv4网络过渡到IPv6网络的过程中如何实现网络互连进行了讨论，还提出了从IPv4到IPv6过渡时期的一些策略。     

DTS技术及其展望

为提高调度员对电力系统正常调度控制以及处理各种突发事件的应变能力,调度员培训仿真技术(DTS)在电力系统中得到了广泛的应用.文中对DTS技术的要求、分类以及结构作了详细的介绍.同时通过对DTS发展现状的分析,提出了适应现代电力系统特点的发展方向.     

Nanotechnology: from Feynman to the grand challenge of molecular manufacturing

The term nanotechnology has come to have two primary meanings: 1) new science and technology that takes advantages of properties operating at the nanoscale, and 2) building with atomic precision through the use of molecular machine systems. The author distinguishes them by referring to the first as near-term nanotechnology and the second as molecular machine systems, or molecular nanotechnology (MNT), also termed molecular manufacturing. This paper attempt to sketch the history of the field overall, the confusion that has arisen between the various types of nanotechnology, the politics of U.S. funding, and prospects for broadening future R&D to put greater emphasis on the goal of building with atomic precision.     

科技领跑 加强自主创新是制造业企业可持续发展的根本

大家都知道中国目前已经成为世界第四大制造业国家．2004年中国对外贸易已经达到11347亿,名列世界第三,“中国制造”已经走遍全球。     

应用UML建模技术设计开发送电所生产管理系统

针对当前管理系统软件开发中存在的问题，结合送电所生产管理系统的特点，提出应用UML建模技术设计开发的系统解决方案。介绍和分析了面向对象的UML建模技术，并从软件开发过程的角度重点探讨了UML建模技术在需求分析和结构设计阶段中的应用，提出了解决管理系统软件开发问题的新思路。UML技术作为先进的软件工程学方法，对于电力系统软件开发具有较强的实用价值。     

电功率采样测量技术及其发展概况

介绍了在电功率测量方法采样技术的发展历史、研究现状及新动态，说明了各种采样方法的特点及在应用中存在的问题，并在其误差研究方面给出了全面系统的阐述。     

环境保护与高压电器制造业发展趋势探讨

《京都议定书》中规定的六种温室气体之一的六氟化硫(SF6)气体向大气的排放主要是通过电力输变电设备,尤其是高压开关设备、互感器、变压器和气体绝缘输电管道等产品都是在试验研究、生产制造、运输和运行以及检修过程中产生的.     

A computer-aided, total quality approach to manufacturing educationin engineering

This paper describes an ongoing study in improving entry-level engineering education through the deployment of new teaching and learning tools. We introduce a computer-aided interactive multimedia manufacturing courseware. To improve manufacturing education we need to change not only the process of teaching and learning, but also provide new tools and technology that promote efficient learning and make it widely available and continuously improving. To address this manufacturing education challenge, we are presently designing a program based on a new computer-aided education paradigm that embodies total quality management (TQM) and critical thinking (CT) concepts. An interactive multimedia manufacturing courseware lies at the heart of this new computer-aided education paradigm. The manufacturing engineering multimedia courseware (MEMC) includes: on-line lectures, audiovideo education tools, interactive computer software, on-line assignment and exams, information about faculty, and on-line evaluation tools to obtain users' feedback to enhance teaching. It also makes access available to related academia, industry, and government research and education information through the World Wide Web. In this paper, we briefly review the status of engineering education in the United States and describe the appropriateness of unifying the concepts of TQM and CT. Additionally, we provide details of how these concepts can be used in an educational model     

A survey of architectures for volume rendering

Five hardware architectures for volume rendering, which requires efficiently handling a huge amount of volumetric data, are surveyed, categorized, and compared. They are Cube, Insight, PARCUM, Voxel Processor, and 3DP. General-purpose graphics systems that exploit their surface-based geometry engine to reduce the computational burden of the rendering process are briefly reviewed     

Kansas from 2007 to 2017: A decade of renewable energy development

In one decade, Kansas renewable energy growth created more than $10 billion dollars in capital investment. A battle over building a new coal fired generating plant would become the catalyst for advancing wind energy. Thrust into the national spotlight, Kansas utilized a coal plant compromise to advance a renewable portfolio standard (RPS) that required state-regulated utility companies to invest in renewable energy. This effort ultimately led to Kansas becoming a leader in wind power development.