查询词典 optimal strategy

According to the features of refrigerated food in perishable commodity, this paper aims to construct a profit model on condition of uncertain delivery time by introducing price discount system and present optimal ordering strategy, viz.

针对易腐物品中冷藏食品的特性，构建交货期不定情况下的利润模型，并引入价格折扣机制，可以提出最优订货策略，即根据市场需求的变化以及价格等多方面因素，制定灵活的动态的订货时间，从而可保证企业利润最大化。

This paper does the researches on the adopting the time of the new technology by duopolies game model and has proved there is a optimal time of adopting the newtechnology,and before which the company should adopt waiting strategy.

本文通过构建双寡头垄断博弈模型对新技术的采用时点进行研究，证明企业采用新技术时存在一个最佳时点，在这个最佳时点之前，企业应采取等待策略。

Based on the balanced exergy grand composite curve and the improved shiftwork targeting method, the top-level analysis approach and its strategy are developed. It is employed to direct the analysis and diagnosis of the energy-utilization of the overall low-temperature process system in order to find out the optimal target to modify the process.

以低温过程系统平衡的有效能总组合曲线为分析工具，提出了基于改进轴功目标法的低温过程系统顶层分析方法，用以分析低温过程系统的能量流动，发现最佳的过程改进目标。

Strategy for designing optimal bounded control to minimize the response of quasi partially-integrable Hamiltonian systems with stochastic excitations is proposed based on the stochastic averaging method for quasi partially-integrable Hamiltonian systems and the stochastic dynamical programming principle.

本文提出了一种基于拟部分可积Hamilton系统随机平均法和随机动态规划原理的最优有界控制策略。

An adaptive genetic algorithm in conjunction with multi-population genetic strategy, entropy-based searching technique with narrowing down space and the quasi-exact penalty function was developed to solve the optimization problem. The proposed method culd successfully balance the efficiency against precision, and close the optimal solution quickly and stability.

一个自适应的遗传算法被用于求解上述优化模型，该算法采用多种群遗传策略、信息熵控制的空间减缩搜索技术以及拟精确罚函数方法，较好地平衡了效率与精度之间的关系，从而能够快速而稳定地逼近最优解。

Theoretical and experiment researches of transmission mechanism and control strategy of the CVT have been carried out under the project (59835160) financed by National Natural Science Foundation which includes follow content:1The kinematic relation of the metal pushing V-belt type transmission is analyzed. The relation among oil pressure of pulley cylinder, transmission ratio and input torque under load condition is studied. Optimal design method for metal pushing V-belt type continuously variable transmission is put forward.2Based on the engine experiment, torque and oil consumption model of engine are established by method of spline interpolation. The optimum economy and performance curves are put forward.

本文在国家自然科学基金重点项目（资助号：59835160）资助下，对金属带式无级变速传动系统的传动机理、匹配及控制策略等进行了系统深入的理论分析和实验研究，具体研究内容如下：1）系统地分析了金属带无级变速传动的基本运动规律，研究了在负载状态下，带轮油缸压力与速比和输入转矩的关系，提出了对金属带式无级变速传动系统进行优化设计的方法。2）通过发动机台架试验，利用样条插值方法构造了发动机转矩和发动机油耗模型，确定了发动机最佳经济性与最佳动力性工作线。

First, it diagnoses and analyses the maglev train's suspension system and traction system by applying the FTA and fuzzy FTA method. Furthermore, it presents the new way to solute the diagnosis searching arithmetic by building the searching matrix based on the factors such as components' key weightiness, faults happen probability, searching cost. Then it can get optimal searching sequence for seeking the reason to the faults. Second, it builds the train's rank evaluation model based on multiple hiberarchy neural networks, after it takes the strategy that set the component diagnosis and whole train fault rank evaluation into two steps. Third, it deeply analyses reliability of the maglev train's power system with function-correlated feature, by the method that combining the FTA with the Markov model. Finally aiming at maintenance ahead of the fault, it proposes the blue print for the maglev train's maintenance. What's more, it introduces the design and realization to recorder for the train run data in detail.

应用故障树和模糊故障树分析法对磁浮列车悬浮系统、牵引系统进行全面的诊断分析，提出了以部件关键重要度、故障概率、搜索代价为因素，建立搜索决策矩阵，综合排序的搜索算法；采取部件诊断和列车集中评估相结合的分层诊断策略，建立基于多重神经网络的列车故障等级评估模型；结合故障树和马尔可夫模型对具有功能相关特性的列车电源系统进行可靠性分析；着眼事前维修，提出了列车运行维护方案，并设计实现了列车运行数据记录器。

The influence of the lagging characteristics of CVT ratio control on the drivability and fuel economy of the automobile were studied.Based on the routine control strategy,the rotate speed signals of the secondary pulley were corrected, the algorithms of the objective ratio were perfected, and the departure of the engine operation from the optimal operation line was decreased.

分析了金属带式无级变速器速比控制的滞后特性对汽车燃料经济性和驾驶性能的影响，在常规控制策略的基础上，增加了对从动轮转速信号的修正，完善了目标速比控制算法，以减小发动机工作点相对最佳经济工作路线的偏离程度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。