排序方式: 共有159条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
25.
基于Vague集的TOPSIS法求解目标优先级 总被引:1,自引:0,他引:1
针对传感器管理中目标—传感器配对出现的目标优先级求解问题,提出了一种基于Vague集的TOPSIS计算方法。在分析目标优先级的主要影响因素基础上,定义了各影响因素的影响系数。同时结合Vague集的TOPSIS法给出了目标优先级的计算步骤,为目标优先级求解提供了一种新途径。并结合仿真算例表明该方法的合理性与有效性。 相似文献
26.
27.
28.
R.E. Lillo 《海军后勤学研究》2001,48(3):201-209
An optimal operating policy is characterized for the infinite‐horizon average‐cost case of a single server queueing control problem. The server may be turned on at arrival epochs or off at departure epochs. Two classes of customers, each of them arriving according to an independent Poisson processes, are considered. An arriving 1‐customer enters the system if the server is turned on upon his arrival, or if the server is on and idle. In the former case, the 1‐customer is selected for service ahead of those customers waiting in the system; otherwise he leaves the system immediately. 2‐Customers remain in the system until they complete their service requirements. Under a linear cost structure, this paper shows that a stationary optimal policy exists such that either (1) leaves the server on at all times, or (2) turns the server off when the system is empty. In the latter case, we show that the stationary optimal policy is a threshold strategy, this feature being commonplace in most of priority queueing systems and inventory models. However, the optimal policy in our model is determined by two thresholds instead of one. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 201–209, 2001 相似文献
29.
针对需求开发过程中涉及到的系统以及各系统之间的关系,提出了需求开发的WRSPM五元素参考模型,对参考模型中元素和元素之间的关系进行了较明确的定义,做出对参考模型的形式化描述。比较分析了将WRSPM参考模型与功能文档描述模型(FDM),并得出了参考模型的特点。 相似文献
30.
针对当前缺乏科学合理的理论和方法确定导弹系统级测试性指标的现状,提出一种面向任务需求的测试性指标确定方法.将导弹任务剖面划分为贮存、出库、部署和发射四个阶段,并提出各个阶段相应的测试需求;分别建立基于贮存可用度、战斗准备任务成功率、部署战备完好率和发射任务成功率为性能要求的测试性需求子模型,给出各个性能指标与测试性参数... 相似文献