控制

The journal publishes reviews covers the whole field of the biology and biochemistry of cancer, emphasizing oncogenes and tumor suppressor genes, growth-related cell cycle control signalling, carcinogenesis mechanisms, cell transformation, immunologic control mechanisms, genetics of human cancer, control of cell proliferation, genetic and molecular control of organismic development, rational anti-tumor drug design.

该杂志主要发表有关肿瘤生物学和生物化学的综述。其内容包括：致癌基因和肿瘤抑制基因，与生长有关的细胞周期控制的信号转导，致癌机理，细胞转化，免疫控制机理，人类癌症遗传学，细胞增殖的控制，组织发育的遗传和分子控制，合理的抗肿瘤药物设计等。

Using universal PWM method means to control output power and output characteristic through controlling IGBT switch on time.

控制电路采用脉宽调制方式进行输出控制，即：控制IGBT的导通时间来实现焊机输出功率与输出特性的控制。

Based on the analysis of the control demands of the exterior overfall arc water gate, control system buildup, design of the control mode and the realizable control function are put forward.

本文在分析溢流表孔弧形工作闸门控制需满足要求的基础上，提出控制系统组成、控制方式的设计以及可实现的控制功能。

Summarizing the study of oversaturated traffic control, although it has a long researching history, the acquaintance limitation of network traffic flow retards its development. This limitation includes the traffic flow model, control methodology and control objectives.

纵观对过饱和状态控制问题的研究，虽然起步较早，但限于人们对控制对象认识的水平，使得研究过程中采用的交通流模型、控制方法和控制问题描述等重要的环节有所局限。

This model realized two parallel control strategy as independent access control and collaborative access control. It also supported dynamic flexible management requirements of access control for collaborative ASP system.

该模型实现了自主访问控制和协同访问控制两种访问控制并行的设计思想，支持协同应用服务提供商系统动态柔性的访问控制管理需求。

Servo controller is key part of antenna control system.In some servo controller,classic PID control algorithm is adopted. In order to improve precision of control system,the integral parameter has been turned too big to use because it will cause integral saturation which depress system performance.On the other hand,ISA bus is used to communicate between servo controller and main computer.ISA is low speed interface protocol,it cannot provide more data for complicated real time position control in servo controller.

伺服控制器是天线伺服控制系统的核心环节，经典的PID控制算法在整定时整定出的积分环节参数较大，很容易出现积分饱和，造成控制精度的降低；另一方面伺服系统中伺服控制器与主控计算机通过低速的ISA总线进行通信，无法满足控制器进行复杂的位置控制运算所要求的实时大信息量的数据传输。

National Institute of Parasitic diseases,Chinese Center for Disease Control and Prevention,Shanghai 200025,China

中国疾病预防控制中心寄生虫病预防控制所，世界卫生组织疟疾血吸虫病和丝虫病合作中心，中国疾病预防控制中心寄生虫病预防控制所，世界卫生组织疟疾血吸虫病和丝虫病合作中心，上海 200025

Firstly,different control strategies for sensor management are modeled by the real language measure. The legal behavior of control strategy modeled by FSA can generate a partially ordered set of controlled languages. Then an identification method of the language measure parameters based on an FSA model is proposed. The language measure creates a total ordering on the performance of the controlled languages.

首先，建立传感器管理控制策略的有限状态自动机模型，通过对可控制事件的非使能设定，描述不同控制策略；提出语言测度参数的递归估计方法与停止规则，并根据有限状态自动机模型产生语言的测度获得各种传感器控制策略的性能指标。

It becomes more difficult to manage, integrate and share the control system real-time data when we set up the industrial real-time database because of complicated affair between every department and isomeric character of the system. A three-level-structure model and the method to establish database is provided based on CORBA criterion with its character of being regardless of programming languages, hardware platform and network protocol . A universal real-time database faces multi-system is also set up by learning the distributed criterion, it can realize the request broker , and the application software can visit the database pellucidly ; Thus the power station simulation model can be linked with the control system such as infi90 , ovation and be made use of the control object , a closed simulation and control experiment system is set up. Further more we can build an integrate automatic experiment platform from the simulation object of power plant to the process control and the to SIS. Li Ming(Control Theory and Control Engineering)Directed by associate prof. Lin Yongjun

在创建工控领域实时数据库时，企业各部门间的复杂事务及内部异构性给实时数据的管理、集成和共享带来了一定的困难，根据CORBA规范具有语言无关性、平台无关性和网络协议无关性的特点提出基于分布式计算规范CORBA的三层体系结构模型及建立与维护实时数据库的方法和途径；通过CORBA规范建立面向多个分散控制系统的通用实时数据库，实现数据访问代理，使应用软件可以透明地对实时数据库进行访问、存取、管理；将Infi90、Ovation分散控制系统与火电厂仿真机模型进行有效的互连，以全物理过程仿真数学模型为对象，构建了闭环控制仿真实验研究系统，实现数据的高效连通及管理；进而通过基于CORBA的实时数据库构建一个从火电厂仿真机对象到过程控制设备再到SIS系统的综合自动化试验平台。

There were many schemes that have been applied to these system to minimize the contouring error, but the effects of these scheme are usually undesire. A repetitive control algorithm was applied here to improve the precision of the system. Experimental results indicated that the periodic error decreased 90% by using the repetitive control method.

另外我们也针对系统的最重要指标—精度—的控制，比较传统伺服控制与往覆式控制理论，在整体系统的要求下整合的可行性并进行相关的实验，而由实验验证往覆式控制理论针对周期性误差信号所具有的特殊补偿现象，并由此得到往覆式控制器的基本特性。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。