磁控等离子体教学实验装置的研制

介绍一种等离子体教学实验装置的构造、原理及其诊断方法,其主体是由球形玻璃真空放电室构成,它可获得直流辉光等离子体;当外加磁场时可实现对等离子体的约束;利用静电探针可以对等离子体的基本参数如:电子温度和电子密度进行测量诊断。     

静态干扰电疗法的物理原理与应用

静态干扰电疗法，是一种利用干扰电流对人的生理产生作用，而治疗疾病的方法。主要分析和研究静态干扰电流的产生原理、物理特性及干扰电流对人体的生理作用和治疗作用。     

用VB编写密立根油滴实验数据处理软件

Visual Basic6．0是创建Windows应用程序最简便、最快捷的工具之一，密立根油滴实验测定了基本电荷e，但数据计算十分繁琐。可用VB编写数据处理程序；使用时只需输入相应数据，运行程序即可得到实验结果．其使用方法简便快捷，节省时间而且计算结果一目了然．     

Environmental damage costs from fossil electricity generation in China, 2000-2003

Electricity consumption increases rapidly with the rapid development of China. The environmental damage costs of electricity generation are very important for both policy analysis and the proper management of the environment. A method was developed in this work to estimate gross environmental damage costs according to emission inventory and environmental cost factors, and to extend the costs from provincial to national level with population density. In this paper, sulfur dioxide (SO2), nitrogen oxides (NOx), particulate matter less than 10 μm in diameter (PM10), and carbon dioxide (CO2) from fossil fired power plants over 6000 kW were selected as index pollutants to quantify the environmental costs of damages on human health and global warming. With the new developed method, environmental damage costs, caused by 3 types of fired power plants in 30 provinces and 6 economic sectors during the years 2000 to 2003, were evaluated and analyzed. It can be seen that the calculated total national environmental damage costs of electricity have rapidly increased from 94930.87×106 USD in 2000 to about 141041.39×106 USD in 2003, with an average annual growth rate of 14.11%. Environmental damage costs of SO2, NOx, PM10, and CO2 are 69475.69×106, 30079.29×106, 28931.84×106, and 12554.57×106 USD and account for 49.26%, 21.33%, 20.51%, and 8.90% of total environmental costs in fossil electricity generation, respectively. With regard to regional distribution, external costs caused by fossil electricity generation are mainly concentrated in the more populated and industrialized areas of China, i.e., the Eastern Central and Southeastern areas.     

在教学中促进学生认知结构的形成——《电工学》教学中的一点体会

认知结构是学科基本知识结构在学习者头脑中形成的观念的内容和组织，是个体认知能力的基础。从把握学科知识结构的整体性、发挥学生主观能动性出发，结合高职电工学的教学，谈谈促进学生认知结构形成的几点体会。     

电表改装实验的设计与测试

从电路原理出发,给出了电表改装实验中电路参数的计算方法和电路设计的技术要求;并通过对电路中相关物理量两种不同方式的测试,给出了在电表改装实验中正确选择元件、合理配置参数和减小测量误差的具体做法.结果表明,要提高测量准确度,应采用改装表与标准表同时接入电路测量的方式.     

自耦补偿稳压技术在节电行业的应用

当前,我国的电力利用效率很低,造成我国单位GDP耗电量是发达国家的3～5倍,各个生产企业由于电费成本居高不下,已严重影响了产品的市场竞争力;另一方面,持续多年的电力紧缺、拉闸限电、电价上涨也影响了各个企业的正常生产秩序和居民的日常生活质量;对目前节电技术中韵自耦补偿稳压技术进行论述,并以实例论证自耦补偿稳压技术的节电应用。     

磁场强度矢量仅与传导电流有关的条件

本文从麦克斯韦方程出发 ,用矢量场论推导出了静磁场中磁场强度矢量仅与传导电流有关的条件     

Decision-making model for risk management of cascade hydropower stations

In a medium-term electricity market,in order to reduce the risks of price and inflow uncertainties, the cascade hydropower stations may use the options contract with electricity supply companies. A profit-based model for risk management of cascade hydropower stations in the medium-term electricity market is presented. The objective function is profit maximization of cascade hydropower stations. In order to avoid the risks of price and inflow uncertainties, two different risk-aversion constraints: a minimum profit constraint and a minimum conditional value-at-risk, are introduced in the model. In addition, the model takes into account technology constraints of the generating units, which includes reservoir flow balance, reservoir capacity limits, water discharge constraints, etc. The model is formulated as a mixed integer nonlinear programming problem. Because the search space of the solution is very large, a genetic algorithm is used to deal with the problem.     

模拟万用表与数字万用表的应用差异

介绍了模拟式万用表和数字式万用表的工作原理，论述并举例说明了模拟式万用表和数字式万用表的应用差异。