排序方式: 共有65条查询结果,搜索用时 15 毫秒
31.
针对正交各向异性材料的二维非线性热传导反问题,采用顺序函数法进行表面热流辨识问题的研究。在求解反问题时,采用有限体积法、牛顿-拉夫逊法并引入未来时间步的概念。在每个时间步内,将待辨识热流视为非线性方程组的未知量,通过一个迭代过程进行求解。算例的研究表明,热流辨识结果与真实热流相近,从而证明了本方法在辨识二维非线性热传导反问题时是准确、稳定、有效的。 相似文献
32.
33.
We study two‐agent scheduling on a single sequential and compatible batching machine in which jobs in each batch are processed sequentially and compatibility means that jobs of distinct agents can be processed in a common batch. A fixed setup time is required before each batch is started. Each agent seeks to optimize some scheduling criterion that depends on the completion times of its own jobs only. We consider several scheduling problems arising from different combinations of some regular scheduling criteria, including the maximum cost (embracing lateness and makespan as its special cases), the total completion time, and the (weighted) number of tardy jobs. Our goal is to find an optimal schedule that minimizes the objective value of one agent, subject to an upper bound on the objective value of the other agent. For each problem under consideration, we provide either a polynomial‐time or a pseudo‐polynomial‐time algorithm to solve it. We also devise a fully polynomial‐time approximation scheme when both agents’ scheduling criteria are the weighted number of tardy jobs. 相似文献
34.
时序电路测试产生过程中,在进行敏化路径选择时会遇到失败问题.本文针对迭代组合阵列模型测试中产生的这些问题进行了有益的探讨,并提出了改进的时序电路测试产生算法,使之更加完善. 相似文献
35.
选取截尾点是截尾序贯验后加权检验很关键的一步,目前理论上尚无有效的选取方法。本文用优化技术确定截尾点C,克服了实践中确定停时N和截尾点C遇到的计算困难,避免了一般取C=1的盲目性,使截尾点C的选取有了理论根据。优选的截尾点不仅使双方承担的风险之和最小,而且使双方承担的风险值相对合理,易于接受。 相似文献
36.
李良良 《国防科技大学学报》1989,11(1):22-27
文中概述顺序执行PROLOG程序的计算机的一种系统结构的研究和实现情况,主要包括一个扩充的顺序PROLOG的抽象执行模型、机器指令系统、编译型PROLOG数据库的研究与实现算法、实验系统YH-SIM-ES的设计与实现、以及一种支持快速回顾的PROLOG机硬件组织的研究。 相似文献
37.
本文论述了提高智能工具机性能所采取的技术措施,并对其性能进行了模拟。模拟结果表明,智能工具机的平均推理速度可达500KLIPS 左右,比日本的PSI—Ⅰ约快一倍,比美国加州大学Berkeley 分校研制的PLM 约快两倍。 相似文献
38.
Timothy S. Vaughan 《海军后勤学研究》2001,48(2):159-171
When a control chart signals an out‐of‐control condition for a production process, it may be desirable to “quarantine” all units produced since the last in‐control SPC sample. This paper presents an efficient procedure for variables inspection of such “SPC quarantined” product. A Bayesian sequential inspection procedure is developed which determines whether the out of control production is of acceptable quality. By inspecting the units in reverse of the order in which they were produced, the procedure is also capable of detecting the point at which the process went out of control, thus eliminating the need to inspect units produced prior to the onset of the out of control condition. Numerical examples are presented, and the performance characteristics of the procedure are demonstrated using Monte Carlo simulation. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 159–171, 2001 相似文献
39.
40.
We introduce the concept of a sequential double window procedure and compare the resulting acceptance test with both a fixed sample size method as well as with the Wald sequential probability ratio test. © 2003 Wiley Periodicals, Inc. Naval Research Logistics, 2004 相似文献