控制集

A user, group, or DASD data set that is defined to RACF.

在资源存取控制软件中定义的一个用户、一组用户或者磁盘数据集。

An operating system that resides on a disk.A user, group, or DASD data set that is defined to RACF.

在资源存取控制软件中定义的一个用户、一组用户或者磁盘数据集。

This paper provide some results regarding upper semi continuity as well as lower semi continuity of cone efficient,and weakly cone efficient solution s in vector optimization with decision cone is perturbed.

研究了当控制锥受扰动时，具有集值映射向量优化问题的锥有效解和锥弱有效解的上、下半连续

With the rapid development of computer ,micro-electronics and network, embedded system has been widely applied in the national defence, industry, medical treatment,etc.lt is very meaningful and important to develop a general platform, which is an integrated production of embedded control, signal processing and network communication, and provide a programmable hardware interface and a friendly interface, which can improve networking flexibility, system reliability and developability.

随着计算机技术、微电子技术和网络技术的飞速发展，嵌入式系统在国防、工业、医疗等诸多领域的应用越来越广泛。研制一个集嵌入式控制、信息处理和网络通信于一体，且提供可编程的硬件接口和友好的软件开发界面的通用平台，对于提高分布式测控系统的组网灵活性、系统可靠性和可开发性都具有重要的意义。

Based on this, to avoid using the Green′s formula on infinite domain, an infinitely differentiable function with compact subset is constructed and some important results to a especial solution of the inhomogeneous field equation are obtained.

在此基础上，为了避免使用无限区域上的 Green公式，通过构造紧支集上的无穷可微函数，获得满足非齐次控制微分方程的特解的重要结果。

As a private mobile communication system, The digital trunkingmobile communication system was boomed in 1990's, and before this, the appliedprivate mobile communication systems in market are almost the analog systemwith analog voice and digital signalling. And there are no data referring to thesystem design and parameters chosen. It includes the wireless channel accessalgorithm of the mobile terminals, single base station capacity in large regional networks, link designing schemes between the switching control center and basestation as well as the study of the service quality for the multiple traffic. Theseindispensable parameters in design a digital trunking communication system arestudied in this dissertation and some instructive achievements can be got. To provethe correction of the theoretical study, the result was tested with the popularsystem of pan-European digital trunking communication system.

数字集群移动通信系统是九十年代中、后期兴起的专用移动通信系统的一种新体制，在此之前国际、国内市场使用的都是数字信令、模拟话音集群移动通信系统其涉及领域是模拟体制，对数字集群的系统设计的有关参数、方法等的选用及其性能表现并无成熟的文献可供参考，如移动终端的无线信道接入算法、大区组网单基站系统的容量、基站和交换控制中心间的链路设计和多业务种类的服务质量等都是数字集群基站子系统进行设计和开发必须解决的关键技术。

In this system, we introduces cluster architecture to provide global and scalable streaming caching proxy service mechanism; We implement streaming media transfer protocol on caching proxy end; We implement layered caching mechanism (global disk caching and memory caching) using dynamic sharing running memory buffer algorithm to support more stable and real-time parallel streams; We implement client request aggregation by means of streaming session sharing to reduce disk I/O and serve more user; We propose single streaming image to support the unify of pre-fetching streaming and caching streaming, which guarantees the proxy streaming of transparency for client; We design and implement streaming pre-fetching mechanism based on packet feedback information to reduce the number of "rebuffering" on client end; We bring forward streaming caching admission control policy fit for streaming caching proxy server to guarantee the QoS of streaming service.

该系统引入集群架构以提供全局的、可扩展的缓存代理服务机制；实现了缓存代理端的流媒体传输协议；采用动态共享运行缓冲区算法实现了分层缓存机制(全局磁盘缓存和内存缓存)以支持更多稳定、实时的并发流；利用流会话共享机制实现了客户请求聚集，从而减少磁盘I/O同时能服务更多的客户；提出了单一流映像，以支持预取流和缓存流的统一，从而保证代理端服务流对客户的完全透明；设计并实现了基于包反馈信息的流数据预取机制，从而减少了客户端的"rebuffering"次数；提出了适合于缓存代理服务器的流缓存准入控制策略，保证了流服务的QoS。

This software integrates functions of measurement, analysis, control, display, drive cycle set and parameters set.

最后，重点论述了集测量、分析、控制、显示、循环工况设置及参数设置为一体的测试、监控软件的设计与实现。

The sluice-gate control system is a SCADA system (data capture 、 data surveillance and data control), the functions of which are to capture, monitor and control the central data , capture data digitizedly and distributively , transmit data gradedly , display in multiple modes , and so on . The system makes the process of opening and closure of the sluice-gate simple, convenient, flexible and stable . It can discharge reasonably by using the fewest mechanical and electronic devices , and attain the best effect of the intellectual SCADA system in the loading capability of the sluice-gate .

闸门监控系统是一个可进行中央数据采集、监视和控制的，集数字化、分布式数据采集，分层数据传输，多种显示方式等功能于一身的SCADA系统，使得闸门启闭过程更加简捷、方便、灵活、可靠，功能更强大，从而达到使用最小的机电设备与能耗，获得最合理的排放，并充分发挥计算机智能SCADA系统对闸门运载能力的最佳效果。

The liquid level of separator at gathering station uses dual－figure control and continuouly detecting the liquid level of the separator by differential liquid level transducer.

气体在集气站内的初脱水及排水计量是由高效分离器完成的，因此有效地控制分离器内的液面是个关键问题。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。