Microchip提供符合RoHS标准的无铅封装产品

瑞萨科技公司日前宣布开发出OpenGL ES库三维图形软件，用于其SH-Mobile3高端应用处理器。OpenGL ES库符合OpenGL ES三维图形编程接口标准。可提供下列特性：     

OpenGL在VC＋＋6.0开发环境下的编程实现

近年来,由于三维技术的飞速发展和广泛应用,许多原来采用Visual C＋＋作为基础语言创建应用程序的领域,都有了虚拟现实、科学计算可视化等三维仿真处理的应用要求。基于此介绍了OpenGL的工作方式、VC＋＋下的OpenGL的程序框架、OpenGL绘制过程以及双缓存技术。最后给出工程上某个时刻的效果图。     

基于OpenGL的模拟战场环境设计

介绍在VC＋＋6.0环境下基于OpenGL所开发的模拟战场环境。在本次设计中,首先在OpenGL的程序框架下设计了摄像漫游的程序,通过调用等高线地形图制作了三维的地形,并使用天空盒的原理制作了天空的模拟;最后,在场景中调用了树、3DS模型和（MD2、MDL）动画模型,并使用粒子算法实现了爆炸效果。     

C＋＋类库Qt在数值模拟软件开发中的应用

介绍调用C＋＋类库Qt进行数值模拟软件开发的方法。首先介绍QT及其图形库QWt;其次对脉冲束辐照材料热力学效应软件GUI的设计做了详细说明．并给出数据文件的输入、输出方法;最后根据计算结果调用Qwt库显示出处理需要的图形。基于Qt的软件开发表明：Qt在数值计算软件开发中具有很强的优势．适合作为数值计算软件GUI开发的工作平台.     

C#开发OpenGL的图形绘制方法研究

OpenGL作为一种高性能图形和交互式视景处理的标准,许多软件开发商提供的程序设计语言都提供了对开发基于OpenGL应用软件的支持,如C 等。但是,还没有在C#中使用OpenGL的标准和规范的方法。不过在C#中实现OpenGL也并非没有可能。结合常用的第三方软件,将讨论2种在C#中开发OpenGL的方法-CsGL和Tao图形框架,该方法较其他方法实现简单而且富有技巧性。     

Visual FoxPro与C＋＋的通信方法探讨

以参数传递为重点,阐述了Ｖｉｓｕａｌ ＦｏｘＰｒｏ与Ｃ＋＋的通信方法,并用Ｃ＋＋Ｂｕｉｄｅｒ和ＶＣ＋＋５．０分别开发了相应的示例动态连接库,较为详细地说明了用Ｃ＋＋语言扩展Ｖｉｓｕａｌ ＦｏｘＰｒｏ功能的一般方法。     

多媒体Visual C^＋＋示教系统的开发

文章介绍了Ｖｉｓｕａｌ Ｃ＾＋＋的特点和利用ＶＣ＾＋＋开发应用程序的方法,提出了ＶＣ＾＋＋示教系统应的的功能,讨论了ＭＦＣ库编程、界面设计、多媒体制作、动画揪放等技术,以程序例子说明编程经验和体会,并给出了功能的实现细节。     

系统开发及开发工具

0104755基于 OpenGL 的可复用软构件库与三维交互设计[刊]/林锐//计算机研究与发展.—2000,37(11).— 1360～1366(K)Intra3D 是基于 OpenGL 的交互式三维图形软件开发工具,其核心是集成了场景数据结构、图形对象、三维交互算法和图形用户界面的 C++类库与 COM对象库。论述了 Intra3D 可复用软构件库的体系结构和三维交互设计。软构件库分为基础对象与函数、图形对象、场景图与节点和绘制与交互4层。三维交互着重论述节点的图形变换、鼠标跟踪球算法和3D 用户界面设计。参16     

Win32环境下的OpenGL程序设计

OpenGL是目前公认的三维图形开发标准,在Win32环境下开发高质量高性能的三维图形应用程序,OpenGL是比较理想的选择。简要介绍Win32环境下,使用OpenGL进行图形操作的具体步骤,详细介绍Win32环境下进行Open-GL编程涉及的相关技术细节,如关联设备描述表和绘制描述表、图形显示与重绘、实时动画与交互操作等,并编写一个简单的动画例程,较全面地演示了Win32环境下的OpenGL编程方法。     

用Visual C++5实现OpenGL编程

一、OpenGL简介 众所周知,OpenGL原先是Silicon Graphics Incorporated(SGI公司)在他们的图形工作站上开发高质量图像的接口。但最近几年它成为一个非常优秀的开放式三维图形接口。实际上它是图形软件和硬件的接口,它包括有120多个图形函数,"GL"是"GRAPHIC LIBRARY"的缩写,意思是“图形库”。OpenGL的出现使大多数的程序员能够在PC机上用C语言开发复杂的三维图形。微软在Visual C++ 5中已提供了三个OpenGL的函数库(glu32.lib,glau.lib,OpenGL32.lib),可以使我们方     

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.     

基于SAP ERP和EWM的数字化供应链的设计与实现

数字经济时代,企业面临更加激烈的市场竞争环境,传统的供应链管理模式的问题日趋显现,亟需进行数字化转型。企业的发展需要更加智能、高效的数字化供应链的支撑。针对这一现状和需求,文章着力于研究如何解决传统企业供应链数字化转型的问题,设计了一套基于SAP ERP和EWM系统为核心的企业数字化供应链的解决方案:通过SAP ERP和EWM系统的无缝对接实现了企业物流相关业务的自动流转;通过EWM与WCS系统的无缝对接以及WCS系统与自动化立体仓库硬件设备的集成实现了仓库所有出入库作业的自动传递和执行;通过引入条码技术以及与RF设备的集成实现了全流程作业的自动识别和准确高效的处理。该解决方案的设计与实现,帮助企业极大地提高了供应链各个环节的作业效率,提高了整个供应链的透明度,进而提升了企业的整体运营效率和管理水平,使得企业能在日趋激烈的市场竞争环境中保持竞争优势,并取得长足发展。     

空间互联网技术发展现状及趋势

空间互联网技术是人类进行航天测控、导航定位、远洋航行等空间应用的基础支撑,是实现全球互联互通的关键手段。首先介绍了空间互联网的概念及内涵、组成及结构、特点及优势等相关基础知识,接着总结了空间互联网的关键技术,然后阐述了空间互联网的发展现状和面临的问题,最后结合互联网技术发展趋势和航天应用的发展要求,对空间互联网技术的发展趋势进行了展望和预测。     

红外热像在石化设备检测中的应用

本文在概述红外热象技术应用于石化设备检测的基本原理和方法的同时，着重介绍了对石化重点装置催化再生器的检测及其衬时故障诊断，以及热管道、阀门外保温效果评估等方面的应用情况。并对此项技术在石化企业的应用前景和研究方向做了一定的介绍。     

网络空间威胁狩猎的研究综述

近年来,随着网络的普及和信息化水平的不断提高,越来越多的公司把重要信息和机密文件存储在连接着网络的计算机上。但是,由于网络攻击的手段层出不穷,威胁狩猎的思想和理念孕育而生并且逐渐成熟。由此,首先对网络空间威胁的定义和攻击流程模型进行介绍,再阐述了威胁狩猎的定义和核心技术,然后描述了威胁狩猎使用的工具;最后,概括总结现有的主流威胁狩猎的框架,比较各个框架的优缺点,并阐明了下一步的发展方向。     

Alternative Schemes for Dynamic Secure VPN Deployment in UMTS

Three alternative schemes for secure Virtual Private Network (VPN) deployment over the Universal Mobile Telecommunication System (UMTS) are proposed and analyzed. The proposed schemes enable a mobile node to voluntarily establish an IPsec-based secure channel to a private network. The alternative schemes differ in the location where the IPsec functionality is placed within the UMTS network architecture (mobile node, access network, and UMTS network border), depending on the employed security model, and whether data in transit are ever in clear-text, or available to be tapped by outsiders. The provided levels of privacy in the deployed VPN schemes, as well as the employed authentication models are examined. An analysis in terms of cost, complexity, and performance overhead that each method imposes to the underlying network architecture, as well as to the mobile devices is presented. The level of system reliability and scalability in granting security services is presented. The VPN management, usability, and trusted relations, as well as their behavior when a mobile user moves are analyzed. The use of special applications that require access to encapsulated data traffic is explored. Finally, an overall comparison of the proposed schemes from the security and operation point of view summarizes their relative performance. Christos Xenakis received his B.Sc. degree in computer science in 1993 and his M.Sc. degree in telecommunication and computer networks in 1996, both from the Department of Informatics and Telecommunications, University of Athens, Greece. In 2004 he received his Ph.D. from the University of Athens (Department of Informatics and Telecommunications). From 1998–2000 was with the Greek telecoms system development firm Teletel S.A., where was involved in the design and development of advanced telecommunications subsystems for ISDN, ATM, GSM, and GPRS. Since 1996 he has been a member of the Communication Networks Laboratory of the University of Athens. He has participated in numerous projects realized in the context of EU Programs (ACTS, ESPRIT, IST). His research interests are in the field of mobile/wireless networks, security and distributed network management. He is the author of over 15 papers in the above areas. Lazaros Merakos received the Diploma in electrical and mechanical engineering from the National Technical University of Athens, Greece, in 1978, and the M.S. and Ph.D. degrees in electrical engineering from the State University of New York, Buffalo, in 1981 and 1984, respectively. From 1983 to 1986, he was on the faculty of Electrical Engineering and Computer Science at the University of Connecticut, Storrs. From 1986 to 1994 he was on the faculty of the Electrical and Computer Engineering Department at Northeastern University, Boston, MA. During the period 1993–1994 he served as Director of the Communications and Digital Processing Research Center at Northeastern University. During the summers of 1990 and 1991, he was a Visiting Scientist at the IBM T. J. Watson Research Center, Yorktown Heights, NY. In 1994, he joined the faculty of the University of Athens, Athens, Greece, where he is presently a Professor in the Department of Informatics and Telecommunications, and Director of the Communication Networks Laboratory (UoA-CNL) and the Networks Operations and Management Center. His research interests are in the design and performance analysis of broadband networks, and wireless/mobile communication systems and services. He has authored more than 150 papers in the above areas. Since 1995, he is leading the research activities of UoA-CNL in the area of mobile communications, in the framework of the Advanced Communication Technologies & Services (ACTS) and Information Society Technologies (IST) programmes funded by the European Union (projects RAINBOW, Magic WAND, WINE, MOBIVAS, POLOS, ANWIRE). He is chairman of the board of the Greek Universities Network, the Greek Schools Network, and member of the board of the Greek Research Network. In 1994, he received the Guanella Award for the Best Paper presented at the International Zurich Seminar on Mobile Communications.     

车辆状态信息显示处理系统的研究与设计

介绍了基于CAN总线的车辆状态信息显示处理系统,分析了CAN.总线的特点及在汽车中使用CAN总线的优点,并给出了其在国内外汽车中的应用现状.首重介绍了系统的总体设计方案,系统的主节点、固定节点及活动节点的硬件组成和工作原理,以及大屏幕液晶显示器的特点及其在系统中的应用.     

宇航用电感器和变压器的失效特征分析

基于美国宇航用电感器和变压器发生失效的类型、原因、检测方法和发生频次的数据，总结了其失效特征，并给出了电感器和变压器在MIL-STD-981中各项试验重要性的认识。通过对美国和国内宇航用电感器和变压器由设计、生产产生的失效和实验中失效的对比分析。给出了此类元件的失效特征。依据国情，提出了如何通过制定标准和失效数据分析工作来提高国产宇航用电感器和变压器可靠性的建议。     

5G传输网络承载方案分析

5G时代3类典型场景的业务需求对承载网络在容量、时延和组网灵活性方面提出了更高的要求,同时针对无线网和核心网架构的变化提出了网络切片、增强路由转发功能等要求。首先分析5G的承载需求,重点考虑5G的3类典型业务场景、无线和核心网的架构变化;然后结合现网100GE PTN的实际应用情况,重点围绕容量、时延等维度完成需求与网络现状的对标;最后提出了网络回传、机房配套的演进方案。     

基于MOS协议的新闻播出系统浅析

对MOS协议的概念、特点及内容进行了概述,针对新闻播出系统中不同设备的数据共享、设备兼容和系统扩展等问题,以中央电视台海外频道的ENPS新闻播出系统为例,分析了基于MOS协议的新闻播出系统的系统结构和运行机制,并以索贝新闻制作系统与ENPS新闻系统的集成应用为依据,证明基于MOS协议的新闻直播系统具有极强的可扩展性和兼容性,是新闻媒体技术未来的发展方向。