中文Windows 3.2使用经验三则

<正> 1.建立程序项的快捷方法 Windows中,程序项是包含在组中的,它是描述应用程序、辅助程序和文件的图标。从组中选择程序项图标可以启动应用程序或辅助程序,或者启动应用程序的同时打开相关的文档。例如,在“附件”这个组中,选择“画笔”这个程序项可以启动画笔程序。 用户可以建立自己的程序项。建立新的程序项通常使用的方法是在程序管理器的“文件”菜单中选择“新建”命令,或者在主群组中选择“Windows设置程序”图标。其     

DSP应用系统设计（二）DSP系统算法设计

本文首先给出了DSP和目前广为流行的嵌入式系统设计的产品构架，明确了“应用程序”在整个系统中的位置——系统的最高层。然后指明“程序=算法 数据结构”说明了算法在程序设计中的核心重要位置。同时用较大的篇幅讲述了算法的基础知识，让大家对嵌入式系统的算法有一目了然的认识。本文以北京飓风中天科技发展有限公司研发网络摄像机为例，目的是给大家构建一个完整的系统算法设计的思想概念。     

自启动程序巧管理

很多应用程序的作者，总是喜欢将程序设计成安装后随系统启动而自动启动。如果用户习惯了这类应用程序的“一路回车”默认安装法而不进行设置，则将导致系统中自动启动的应用程序越来越多，不但会造成启动过程变长，而且还会造成系统资源的极大浪费。     

True BASIC程序设计案例

通过一个用Ｔｕｒｅ ＢＡＳＩＣ设计的通用案例程序，给出了它的结构、全部源程序和使用说明，为初学者和一般用户提供了一个编制其应用程序文件的案例。     

Java技术在数字电视机顶盒中的应用

将来，数字电视将向用户提供一种新的交互式服务，如：电视购物、视频点播、网上冲浪等。机顶盒需要一种中间件来完成交互式应用服务程序的发送和退出服务或转换至其它服务时垃圾信息回收工作。应用服务程序管理器(以下简称管理器)的任务就是管理这些服务程序的生命周期。因此，管理器在管理服务程序和有效利用机顶盒有限资源方面扮演着重要角色。本文描述了管理器的设计。包括服务程序生命周期模型和应用程序与管理器之间的通信协议。并介绍应用程序信息表(AIT)，此表用于携带数据流中基本的应用程序数据信息。     

数字电视应用程序的管理

数字电视将向用户提供如电视购物、视频点播、网上冲浪等新的交互式服务。机顶盒需要中间件来完成交互式应用服务程序的发送和退出服务,或转换至其它服务时垃圾信息回收工作。应用服务程序管理器在管理服务程序和有效利用机顶盒有限资源方面扮演着重要角色。本文描述了应用服务程序管理器的设计,包括服务程序生命周期模型和应用程序与管理器之间的通信协议。并介绍了用于携带数据流中基本应用程序数据信息的应用程序信息表。     

DSP应用系统设计(二) DSP系统算法设计

本文首先给出了DSP和目前广为流行的嵌入式系统设计的产品构架,明确了“应用程序”在整个系统中的位置——系统的最高层。然后指明“程序=算法+数据结构”说明了算法在程序设计中的核心重要位置。同时用较大的篇幅讲述了算法的基础知识,让大家对嵌入式系统的算法有一目了然的认识。本文以北京飓风中天科技发展有限公司研发网络摄像机为例,目的是给大家构建一个完整的系统算法设计的思想概念。     

Delphi—强大的Windows应用程序开发系统

通过描述Ｄｅｌｐｈｉ的结构、特点及使用方法。阐明了开发，设计Ｗｉｎｄｏｗｓ应用程序的新途径。     

基于MVC模型和行为描述的Web应用测试框架

MVC模型分离设计的思想提高了软件的整体质量,然而由于模型只定义了静态架构组件的配置,其并不能明显地提供Web应用程序开发过程中的行为表现,这导致了Web应用程序的描述和其行为特性间较为明显的差异。为了解决这一问题,提出一种行为模型来填补该差异,即对该程序的URL请求序列自动接收机制进行模式化,为Web应用程序提出一个基于行为模式的测试框架。研究表明,当集中于循环行为自动机制时,该框架可提供Web应用程序更好的测试标准。最后,将框架应用于Jakarta Struts框架的配置方案中,其结果表明,该行为模型在对Web应用的测试路径进行分类时取得了较好的效果。     

用户界面管理系统的现状与挑战

介绍了用户界面管理系统的一般结构，讨论了ＵＩＭＳ的特性和设计中存在的问题，比较了几种对话模型描述对话的能力，最后评价了现有的面向对象应用程序框架的性能。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks