控制集

Dominating set is an important concept in graph theory, which is defined as an a vertexsubset such that every other vertex not in it must be adjacent to some vertex in this subset.

控制集是图论中的重要概念，它定义为图中的一个点集，使得图中其它任何一点都与该点集中的某点相邻。

A set S of vertices in a graph G is a dominating set of G if each vertex of V-SV(G is adjacent to some vertex of S.

图G的点集S如果满足：V|G|-S中每个点相邻于S中的某个点，则称点集S是一个控制集。

So, it is very important to research the geometric characteristics of aggregate for asphalt mixture.

如何控制集料的几何特性成为迫切需要解决的问题。

In this paper, we consider the optimal control problem of time-delayed forward-backward stochastic system when control set is convex.

本文研究了在控制集为凸集的情况下带时滞的正倒向随机控制系统的最优控制问题。

In this paper,a necessary condition that a cut vertex belongs to every γ s set of G is discussed,and a necessary and sufficient condition of existing indepedent set dominating set in G is given.

本文讨论了割点属于G的任一最小集控制集的必要条件，并且给出了G有独立集控制集的充要条件。

It constructs connected dominating set of P2Pnetwork, and push vaccine to some nodes in the set for rapid disseminating in P2P networks.

构建P2P网络的连通控制集，将疫苗推送至其中部分节点，在P2P网络中快速分发。

With innovative QACAS technologies,we resolve the crucial schedule problems for PCISA such as "when,what,how many,how" problems for servers. QACAS guarantee fast response,scalability,availability,manageability for PCISA system. Furthermore,QACAS improve the efficiency of resource utilization,resolve the problem of unexpectable and incontrollable QoS,providing cluster level support for the deployment of flexible differentiated service strategies.

QACAS通过创造性的集群QoS控制技术、集群容量规划与控制技术，解决了PCISA系统中服务器何时取、取什么、取多少、如何取等关键调度问题，保证PCISA系统满足快速响应性、高可伸缩性、高可用性、易管理性等集群系统基本性能要求，而且提高了系统资源的有效利用率，解决了服务质量无法预期和控制的问题，为网络应用实施灵活的区分服务策略提供了集群一级的支持。

In this text, on the base of gradation design, the pavement performances of lime-fly ash stabilized aggregates and lime-fly ash mortar under controlling fine aggregates gradation are studied, and contrasted with the mixtures which are under uncontrolling fine aggregates gradation, including mechanical performance, stableness, anti-brushing performance, the anti-crack performance, and drawing the conclusion of controlling fine aggregates gradation.

在配合比设计的基础上，研究了控制细集料级配的二灰砂浆和二灰碎石混合料的力学性能、稳定性能，以及二灰碎石的抗收缩性能、抗冲刷性能，并与不控制细集料级配的二灰砂浆和二灰碎石混合料的路用性能进行了对比，得出实际施工中应控制细集料级配的结论。

The electric elevator controlling has adopt two kinds way at present commonly, one being to adopt PC to control an element as the signal, accomplish electric elevator signal acquisition , operation state and functional setting up, that the automation controller and collection selections realizing an electric elevator run a function , drag moving is to come to be completed from the frequency transformer under the control of; The selections controlling way second kinds using programming controller to substitute PC realizing signal collection is controlled.

目前电梯的控制普遍采用了两种方式，一是采用微机作为信号控制单元，完成电梯信号的采集、运行状态和功能的设定，实现电梯的自动调度和集选运行功能，拖动控制则由变频器来完成；第二种控制方式用可编程控制器取代微机实现信号集选控制。

At present the elevator control generally has selected twomethods, one is uses the microcomputer to take the signal controlunit, completes the elevator signal gathering, the running status andthe function hypothesis, realizes the elevator automatic dispatch andthe collection chooses the movement function, drives the control tocomplete by the frequency changer; The second control modesubstitutes for the microcomputer realization signal collection withthe programmable controller to choose the control.

目前电梯的控制普遍采用了两种方式，一是采用微机作为信号控制单元，完成电梯信号的采集、运行状态和功能的设定，实现电梯的自动调度和集选运行功能，拖动控制则由变频器来完成；第二种控制方式用可编程控制器取代微机实现信号集选控制。

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。