高压大电流晶闸管受主双质掺杂新技术的研究

鉴于现行Ｐ型杂质扩散工艺的不足，提出了受主双质掺杂新技术的研究，经工艺论证和对比实验，首先成功的研制成开管铝镓扩散法，为电力半导体器件研究和生产开创了一条先进的工艺途径。     

IGBT的寄生晶闸管发射结分流电阻

为了设计具有最小寄生晶闸管发射结分流电阻Ｒｐ的大电流ＩＧＢＴ，针对圆形、方形、条形等发射极图形设计．建立了Ｒｐ的计算公式模型，并据此讨论了在各种图形设计中的Ｒｐ与ｐ阱高浓度深层扩散的结深和表面杂质的关系，以及图形及其尺寸对Ｒｐ大小的影响．     

新型可关断晶闸管的研制现状与动向

新型可关断晶闸管的研制现状与动向晶闸管是最适合在大电流下应用的电力半导体器件，其电流增益大，导通电阻小，现已有快速、逆导、不对称、双向、光控等多种类型产品，制造和应用技术日趋成熟，目前性能最高水平为６．５ｋＶ／３．５ｋＡ。普通晶闸管的不足之处是门极不...     

设计GTO的基本考虑

本文从ＧＴＯ的主要局限出发，给出设计ＧＴＯ的基本考虑，为器件的设计和制造提供正确的原则和方法。     

一种用晶闸管实现的大功率型逆变电路

本文介绍了一种带有辅助晶闸管换相式电流型逆变电路，重点分析了其工作原理及换相电容、换相电感的选取，给出了试验波形。该电路已在工业中得到应用。     

硅片粘合杂质双扩散制造晶闸管

本文介绍硅片粘合杂质双扩散制造晶闸管工艺，结合光刻门极化学挖槽技术，简化制管工序，改善了器件的电性能指标。     

MOS控制的晶闸管简介

本文简要介绍了ＭＯＳ控制的晶闸管（ＭＣＴ）结构及优点，较详细地介绍了Ｐ－ＭＣＴ的特点，同时对ＭＣＴ的发展作了一些探讨。     

静电感应晶闸管应用技术的发展

静电感应晶闸管是一种接近理想的功率开关器件，它是解决当前发电，输电，电力变换和损耗的关键器件。本文主要介绍静电感应晶闸管的应用范围和它在高压直流输电，感应加热和熔炼，铜蒸发激光器待方面的应用技术。     

500A,1200V光控双向晶闸管的研制

本文具体描述了中心锥形槽状光敏门极结构光控双向晶闸管的结构特点，介绍了该新型结构器件的关键生产工艺，并对器件的触发特性进行了较深入的理论研究。研制成功的直径为４０ｍｍ，电流宣传品量为５００Ａ，耐压为１２００Ｖ的光控双向晶闸管的最小光触发功率小于１５ｍＷ，动态峰值压降小于１．６Ｖ，换向ｄｖ／ｄｔ耐量大于１００Ｖ／μｓ，换向ｄｉ／ｄｔ耐量大于５０Ａ／μｓ。     

电力半导体器件的现状及发展趋势

叙述了电力半导体器件在电力电子装置中的作用，略述了各种双极型电力半导体器件和ＭＯＳ结构电力半导体器件的主要静，动态特性，目前水平，存在问题及发展趋势。简述了功率ＩＣ，新型半导体材料对发展新型高压，大电流，快速，高温器件的作用。     

FTTH入户光缆线路的设计与施工

FTTH(光纤到户)入户光缆线路是FTTH系统建设的关键部分。针对当前FTTH光缆线路缺少建设与运维管理经验的情况,从FTTH入户光缆线路的组成入手,通过分析FTTH入户光缆线路常用器材性能的特点,结合入户光缆线路工程实践,提出了入户光缆线路的敷设安装要求和相关器材的选型原则,可作为FTTH入户光缆线路设计与施工的重要参考。     

Supervisors in R&D laboratories: using technical, people, and administrative skills effectively

A study of 2172 technical professionals finds that the more their supervisors possess technical, but in particular, people and administrative skills, the more their work environment is stimulating. Moreover, the more their work environment is stimulating, the greater their performance and job satisfaction. In addition, the study finds that the more their work environment is stimulating, the less the technical and people skills of their supervisors help their performance and job satisfaction, the less the administrative skills of their supervisors hurt their performance, and the more the administrative skills of their supervisors help their job satisfaction. The implications of the findings for helping R&D supervisors use technical, people, and administrative skills effectively to increase the performance and job satisfaction of their subordinates are discussed.     

科技博物馆陈列的发展与创新

通过对陈列的定义和历史回顾,以科技博物馆的发展道路为线索,从陈列方式的演变与应用特点,从陈列内容的变化与不同阶段的发展,分析研究它们之间的内在联系及影响规律,以探索科技博物馆陈列的发展趋势和创新方向。     

Perceptions of reward systems by technologists and managers ininformation technology companies

The authors summarize empirical research that studied the perceptions of 91 technologists and managers about rewards systems in eight information technology companies. An analysis of the responses shows that although the companies differ in business and location, technologists and their managers share different sets of perceptions about the same reward systems. Technologists strongly perceive that they must move into management to increase their pay, status, and importance. Managers believe that their pay reflects their current responsibilities and they do not perceive that they are at a dead-end in their jobs. Although they state that technologists need not progress to management positions in their careers, managers agree that technologists must move into management to get higher pay and status. All respondents expressed a strong need for a parallel technical career ladder in their companies     

3G与无线局域网联合组网及漫游技术分析

简要介绍了第三代移动通信网(3G)和无线局域网(WLAN)的发展现状、使用情况、各自的特点以及组网方式和漫游方式,针对两者在有效数据传输率、使用频段、覆盖范围、漫游策略和资费等方面的适用范围和互补性,在详细分析3G和WLAN联合组网漫游所具有优势的基础上,阐述了3G与WLAN联合组网和漫游的可行性,提出了一种两者联合组网和数据业务无缝漫游的实现方案,得出3G和WLAN联合组网在未来具有广泛应用前景的结论。     

Controlling Electrochemically Induced Volume Changes in Conjugated Polymers by Chemical Design: from Theory to Devices

Electrochemically induced volume changes in organic mixed ionic-electronic conductors (OMIECs) are particularly important for their use in dynamic microfiltration systems, biomedical machinery, and electronic devices. Although significant advances have been made to maximize the dimensional changes that can be accomplished by OMIECs, there is currently limited understanding of how changes in their molecular structures impact their underpinning fundamental processes and their performance in electronic devices. Herein, a series of ethylene glycol functionalized conjugated polymers is synthesized, and their electromechanical properties are evaluated through a combined approach of experimental measurements and molecular dynamics simulations. As demonstrated, alterations in the molecular structure of OMIECs impact numerous processes occurring during their electrochemical swelling, with sidechain length shortening decreasing the number of incorporated water molecules, reducing the generated void volumes and promoting the OMIECs to undergo different phase transitions. Ultimately, the impact of these combined molecular processes is assessed in organic electrochemical transistors, revealing that careful balancing of these phenomena is required to maximize device performance.     

舰载预警直升机及其雷达系统的发展

介绍了国外几种典型的舰载预警直升机及其雷达系统的发展情况,分析了主要战技指标,并对未来发展趋势进行了阐述.     

43例歼(强)击机飞行员肾结石的诊治及医学鉴定

目的探讨歼（强）击机飞行员肾结石的诊断治疗及医学鉴定原则。方法回顾分析1982年-2008年43名患肾结石的歼（强）击机飞行员病史资料、诊治过程及医学鉴定结论。结果23名肾结石飞行员经治疗结石排出,4例确诊为肾钙化,均飞行合格;3人因结石长期治疗无效予以停飞,1人因其他疾病停飞;12例处于治疗、观察期,结论为飞行暂不合格。结论歼（强）击机飞行员（含飞行教员）患肾结石影响飞行安全,应在结石排出后方可恢复飞行远离集合系统的肾钙化灶可放飞,但应定期复查,掌握其变化情况。     

湮没算符k次幂本征态的Wigner函数及其非经典特性

利用Fock态表象下的Wigner函数表达式，重构了湮没算符k次幂本征态的Wigner函数，并依据Wigner函数在相空间的分布规律，讨论了湮没算符k次幂本征态的非经典特性．数值结果表明：湮没算符k次幂本征态的Wigner函数的分布与复参数α的取值有关；湮没算符1次幂的本征态(即相干态)为准经典态(其Wigner函数值总是非负的)，而湮没算符大于或等于2次幂的本征态则都具有明显的非经典特性(它们的Wigner函数均出现了负值).