查询词典 optimal strategy

The inventory cost is a primary component of the supply chain cost, and the method for multi-echelon inventory optimization and control must be adopted for the sake of the entire supply chain optimization and control, t present, papers on multi-echelon inventory systems have solved some problems, but they still have limitations. Firstly, they assumed that leadtime are constants. In practice, as the unknowable incidents exist in production, transportation and distribution processes, leadtime usually are uncertain. Secondly, there exist the hypotheses of totally back orders or completely lost sales under the condition of stockout in most literatures. Thirdly, the existing two-echelon inventory approximate model optimum always fixes one variable in the inventory strategy, and then seeks the optimal in the remained parameters, which makes the result can not be the best outcome.

目前有关两级库存优化控制的研究文献大多是假设提前期为常数的基础上建立模型，然而现实中由于供应链上各节点的库存不确定性以及运输、生产、交货等环节的不可预知性，使得提前期在多数情况下是不确定的；而且大部分文献都是假设缺货情况下要么完全延迟交货，要么完全损失销售，很少有考虑部分损失销售情况下库存优化控制的；另外，现有的两级库存近似模型的优化大都是固定一个库存策略中的变量，对余下变量寻优，其优化结果不可能是最优结果。

An acceleration technique of evolutionary strategy is presented for finding an optimal solution of unimodal function s.

针对单峰函数的最优化问题，给出一个快速收敛的进化策略。

An acceleration technique of evolutionary strategy is presented for finding an optimal solution of unimodal functions.

引 言计算机技术的飞速发展，为解决复杂的数值计算问题提供了可能。

This paper lays its emphasis on the latter by presenting a state optimal space vector control strategy on the basis of using a modified synchronous detection method to generate the reference current.

本文在采用改进的同步检测法产生指令电流的基础上，提出了一种基于状态优化的空间矢量控制方案，主要研究滤波器中变流器的控制策略问题。

The key technologies of ABS based on slip-ratio consist of processing of wheel speed and calculation of wheel acceleration, estimation of vehicle velocity, estimation of the optimal slip-ratio, and the control strategy of ABS. In order to improve the performance of conventional ABS, the above mentioned key technologies and corresponding realization algorithms had been investigated in this paper, and the ABS product equipped in vehicle for performance test had been manufactured.

结合车辆动力学控制的最佳ABS系统是以车轮滑移率为控制目标的ABS系统，它涉及到一系列关键技术研究，如轮速信号的处理方法和轮加速度信号的计算方法、车身速度估计方法、最佳滑移率估计方法和ABS的控制方法等。

And an on-line adaptative training algorithm of the weights of neuron is given, which enhances fusion precision of the model, fault tolerance and adaptive ability for subsystems 4 In order to diagnose the soft fault of integrated system, a new fault detection method is proposed based on federated filter, which can detect fault of system in short interval and greatly enhance the method sensitivity to fault A fault diagnosis method of Dynamically Tuned Gyro baesd on parameter estimation of kinetics model of rotor, and signal pretreatment, parameter estimation and strategy of fault identification are studied in detail The method can locate fault of DTG correctly and effectively, which provides a new approach and idea for gyro fault diagonsis 5 In order to diagnose the hard fault of integrated system, fault tree analysis is studied on fault disgnosis of integrated system circuits, and the hardware and software of disgnosis system are developed, with faults located to main module and circuit For futhur diagnosis, an optimal measurement technology in detection of circuits is discussed by improving an algorithm based on information theory, and a pratical method based on half-split method is proposed.

针对组合系统的软故障诊断问题，提出了基于联合滤波模型的一种新的故障检测算法，给出了算法的理论推导过程，该算法能在较短的时间内检测出系统故障，提高了算法对故障的敏感度；研究了基于动调陀螺转子动力学模型参数辨识的故障诊断方法，就其中的信号预处理、参数辨识及故障决策方法等关键技术进行了详细的研究，该方法可以正确、有效地检测与定位动调陀螺故障，为陀螺故障诊断提供了新的途径和思路。 5。针对组合系统的硬故障诊断问题，研究了基于系统浅知识推理的故障树法在组合系统电路子系统故障诊断中的应用，开发了相关诊断系统的软硬件，故障可定位到系统的主要功能模块和电路板级。为了进一步的故障定位，研究了电路板故障的最优检测问题，完善了基于信息理论的优化算法，并提出了基于&对分法&的一种实用的优化算法，故障可定位到电路板的主要功能元件级。在组建的SINS/GPS组合系统实验平台上，针对上述研究内容，进行了大量的实验研究。

Second, it models and simulates dynamically the parallel, asynchronous, distributed and concurrent workflow of machinery of cluster with intuitionistic and visual figure, and give the effective controlling strategy of optimal collocating and dynamic attemperation, be dead against the asynchronism and concurrent character of machinery of cluster, which result from that MAS loosens the restricting for centrality, programming and gradation controlling and offers the mechanism of separated controlling, meeting an emergency and parallel disposing.

由于多智能主体技术放松了对集中式、规划、顺序控制的限制，提供了分散控制、应急和并行处理，本文针对基于多智能主体的机群工作流的异步性和并发性采用Petri网技术通过直观、形象的图形，对并行、异步、分布、并发的机群工作流进行了建模分析和动态模拟，并提出了机群的优化配置和动态调度的控制策略。3。

Based on the study for backwashing technology, the most optimal backwashing strategy was established, on the base of which to compare the effective rule of backwashing on both of BAC filters.

通过研究不同反冲洗方式、冲洗强度对炭池生物量、净水效能等多项指标的影响确定了炭池的最佳反冲洗模式，在此基础上进一步分析比较了反冲洗对两生物活性炭滤池的影响规律。

In chapter six, the vender markov process and renewal process are used to analyze deteriorating items inventory control .The steady balanceable target function is established and the optimal inventory control strategy is given.

第六章引入向量马氏过程和更新过程对随机易腐物品的最优存储进行了基本分析和探讨，给出了模型从稳态下的目标函数，并提出了最优的库存控制策略。

This work contributed essentially to optimal planning of refinery management. A strategy for solving the decision problem of short—term refinery planning is proposed, that is, to obtain the real time information of unit operations and environmental conditions by means of computer simulation, to dynamically configurate and modify the decision model depending on both simulation and expert reasoning, to make decision analysis and short—term production plan with the aid of expert simulation system. In this paper, a new approach cellad ESDSS was proposed by integrating DSS and expert simulation system . As a case study of ESDSS, a so called RESDSS was constructed, which is composed of seven subsystems, namely: data base subsystem, model base subsystem, method base subsystem, knowledge base subsystem, experiment base subsystem, human computer interaction subsystem, and expert simulation executing subsystem. The main results and contributions of this work are as follows:(1) A novel approach of DSS named ESDSS was proposed, which integrates DSS and ESS.

本文关于炼油生产专家仿真决策支持系统原型的研究从炼油企业优化生产管理的角度出发，以&利用仿真技术获取装置操作和环境条件的动态变化信息，依靠专家方法仿真实现决策模型的生成和修改，凭借专家仿真决策支持系统辅助高层领导者实施决策分析和制定短期生产计划&作为炼油生产短期计划决策问题的求解策略，在综合考虑决策支持系统（Decision Sup-port Systems，简称DSS）和专家仿真系统（Expert Simulation System，简称ESS）特点的同时把这两个系统结合在一起而提出&专家仿真决策支持系统（Ex-pert Simulation Decision Support System，简称ESDSS）&这一新的构思。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。