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Major computer-related hardware and network equipment sales and support services, computer systems integration, computer application software development and technical advice, and other aspects.

主要业务涉及计算机硬件和网络设备的销售及配套服务、计算机系统集成、计算机应用软件的开发及技术咨询等多个方面。

Chapter 1 briefs the relation between invariance and computer vision and summarizes the research and application of invariance in computer vision. Chapter 2 first derives the transformations of three camera models, then makes the correpondences between the models and three typical geometrical transformation groups by analysing the transformations respectively. The correspondences supply the theoretical basis for applying geometrical invariants to resolve the problems of computer vision. In Chapter 3, we describe the geometrical invariant theory and prove some geometrical invariants of coplanar points, lines or conics by algebraic method. In order to use the invariants of conic pairs to describe general 2D shapes, we discuss the perspectively invariant representation of planar curves using conies in detail. A system consisted of two TMS320C25 and based on moment invariants is introduced in Chapter 5. The system can recognize more than 30 different shapes of object model or more than 10 plane models with similar shape in real time.

第一章简述了不变性与计算机视觉的关系，以及计算机视觉中的不变性研究和应用概况；第二章推导了计算机视觉中常用三种投影模型的变换关系，通过对这三种变换关系的分析，分别建立了这三种投影模型和几何学中的三种变换群之间的一一对应关系，为几何不变性在计算机视觉中的应用提供了理论基础；在第三章中，我们介绍了几何不变性的理论，并且用代数方法证明了共面点、直线、二次曲线的几何不变量和射影不变量；为了把二次曲线的不变量用于一般二维形状描述，在第四章中我们详细地讨论了用二次曲线实现一般平面曲线的透视不变性表示的方法；第五章介绍了用两片TMS320C25构成的、基于不变矩形特征的运动目标实时识别系统。

If, hacker, ankle bicer, in the IT field now refers to a "dabbler" in the computer experts, they like to operate a computer hacker wanted to be a class of characters, but their computer literacy and work skills are limited, so called ankle bicer; much - racker refers specifically to gather personal privacy and political scandals of people; paper - pushers refers to a member of dilatory; kegger beer party and so on.

如，hacker ， ankle bicer ，在IT 领域现指"半瓶醋"的电脑专家，他们喜欢操作电脑，想做个黑客一类的人物，但他们的电脑知识和工作技能有限，所以称之为ankle bicer ； much - racker 指专门刺探个人隐私和政界丑闻的人； paper - pushers 指办事拖拉的成员；kegger 啤酒舞会等。

The last but not least, it is also owning to the rapid development in computer science and information technology. Such as, some computational task, which previously must be executed by using super-computer, now can be carried out by personal computer, and at the same time, the network speed and band width of data bus and input/output equipment have increased several times. In addition, the improvement of the high quality graphic displaying is available. All these provide strong support for cryoEM high-resolution reconstruction study.

目前，在低电子剂量的情况下，冷冻电镜照片可以记录到3-4 〓的信息，使用冷冻电子显微镜进行高分辨三维重构工作，已经获得6.5-8〓高分辨率水平的结果，可以分辨出蛋白质的α螺旋、识别出蛋白质的β折叠等蛋白质二级结构；其次是，三维重构算法效能的不断提高，使得对二十面体取向和中心参数计算的可靠性大大提高；再次是，由于计算机和信息技术迅猛发展，例如，以往需要使用大型计算机的计算任务已经可以被一般的个人电脑完成，网络速度、数据总线和硬盘等I／O设备的带宽成倍增长，以及图像显示能力的提高都为冷冻电子显微镜高分辨三维重构技术提供了强有力的支持。

Nowadays, in the low electron dose condition, the information about 3-4〓 can be recorded on the cryoEM micrograph, and the high-resolution reconstruction using the cryoEM has reached 6. 5-8〓 levels. The reconstruction can reveal the protein α helical and recognise β fold secondary structure. Secondly, it is due to the development in 3D reconstruction method, which can be more efficient to determine the orientation and center parameters. The last but not least, it is also owning to the rapid development in computer science and information technology. Such as, some computational task, which previously must be executed by using super-computer, now can be carried out by personal computer, and at the same time, the network speed and band width of data bus and input/output equipment have increased several times. In addition, the improvement of the high quality graphic displaying is available. All these provide strong support for cryoEM high-resolution reconstruction study.

目前，在低电子剂量的情况下，冷冻电镜照片可以记录到3-4 〓的信息，使用冷冻电子显微镜进行高分辨三维重构工作，已经获得6.5-8〓高分辨率水平的结果，可以分辨出蛋白质的α螺旋、识别出蛋白质的β折叠等蛋白质二级结构；其次是，三维重构算法效能的不断提高，使得对二十面体取向和中心参数计算的可靠性大大提高；再次是，由于计算机和信息技术迅猛发展，例如，以往需要使用大型计算机的计算任务已经可以被一般的个人电脑完成，网络速度、数据总线和硬盘等I／O设备的带宽成倍增长，以及图像显示能力的提高都为冷冻电子显微镜高分辨三维重构技术提供了强有力的支持。

The reason is there has an interval between the researcher and the high performance computer, because researcher understands deficiently of the high performance computer and has difficult to use the high performance computer.

究其原因，是因为科研人员和高性能计算之间存在鸿沟，主观上他们对高性能计算缺乏了解，客观上使用高性能计算机存在一定难度，而且访问不便和单位配合的问题也是访问高性能计算机的障碍。

The invention relates to an air ion static determination and an air ion static determinator, comprising air ionization collector, electric charge weigh, control circuit, computer and software system supporting measurement and data recording processing, wherein the electric charge weigh is used to isolate the air ionization collector and the computer acquisition circuit, the computer can monitor the electric quantity on the collector plate electrode.

本发明涉及一种空气离子静态测定法及空气离子静态测定仪，计算机控制的可以在线连续监测空气离子浓度的电路设计和测量方法。测试系统由空气离子采集器、电荷秤、控制电路、计算机及其支持测量和数据记录处理的软件系统构成。电荷秤通过电―光转换、光―电转换起到了把空气离子采集器与计算机采集电路隔离的作用，使采集器上的电荷不会通过采集电路放电，计算机可以监测采集器极板上的带电量。

Programming, Discrete Mathematics, Data Structures and Algorithms, Introduction to the Design and Analysis of Algorithms, Operating Systems, Compiler Principles and Practice, Computer Networks, Computer System Architecture, Embedded Systems and Applications, Database Systems and Applications, Formal Language and Automata, Software Engineering, Artificial Intelligence, Introduction to Computer Graphics, Software System Design, Software Project Management, etc.

主干课程：算法分析与设计、面向对象技术与应用、软件项目管理、软件体系结构、软件过程改进、计算机网络技术、网络与信息安全技术、软件测试技术、信息系统分析与设计、软件度量技术、数据库管理技术、软件平台与中间件技术、数据仓库与数据挖掘、软件需求工程、计算机图形学等。研究方向：软件工程与管理、软件理论与系统、信息系统与工程、计算机图形学与辅助设计。

On this system the up-location computer is composed of industrial computer and the Beijing configuration software, the disperser control of lower position computer use sanling PLC of Q series, which constitute a collection and distribution control system.

该系统上位机采用工控计算机与北京亚控的工控组态软件的组合，下位机分散控制的构成方式采用了三菱Q系列PLC，构成了一个集散控制系统。

Forensic cognizance thinks, 6 the accused violate national regulation, undertake disturbing to function of computer information system, cause computer information system to cannot move normally, sequential and serious, already all formed destroy blame of computer information system.

法院审理认为，6名被告违反国家规定，对计算机信息系统功能进行干扰，造成计算机信息系统不能正常运行，后果严重，均已构成破坏计算机信息系统罪。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。