查询词典 Petri

Regard Petri network as tools, the model of ground antiaircraft information chain is structured and optimized.

以Petri网为工具，构建并优化了地面防空信息链模型。

Invariants and state equations play an important role in Petri net analysis.

不变式和状态方程的求解是Petri网分析中的基本问题。

The positions and functions of the inventory control in the environment of supply chain are discussed first. The analysis on main conflict problems needed to be determined is presented. Based on the algebraic Petri nets the modeling research on vender managed inventory is proceeded on. Considering the shortages of the original algorithms, the improvements are putout to speed up the search process and improve the precision of the search results. The optimizations of lots sizing problem with the objective function of inventory costs are processed by the improved optimal algorithms. By the analysis on the results of the optimization, the conditions of overtime work, out of stock, and security stock are achieved.

文章首先讨论了供应链环境下库存控制在物流管理中的地位和作用，分析了库存控制需要解决的主要矛盾；然后应用代数Petri网对供应商管理库存(Vender Managed Inventory，VMI)的模式进行了建模研究；针对原始的粒子群优化算法和遗传算法存在的不足，分别提出了改进型算法，提高搜索速度和搜索精度；运用改进的优化算法对以库存成本为目标函数的批量计划问题进行了优化，通过优化结果的分析，得出了批量生产计划安排中加班、缺货和安全库存的存在条件。

According to tire valve assembling craftwork, give the math model based on Petri Net and stimulate it, and get the best scheme. All these work afford a precondition and macroscopical guidance for study and making out a good function tire valve assembling equipment.3Have a deep research on the whole structure of the assembly equipment. Great innovation is presented in the design process of 9 suits of transmission machine and 5 sets assembly tongs, so that the structure is compact and the tongs have good fuctions. Especially, the design of tongs for extrusion is perfect as the author think.4 Hardware about control is selected carefully and software is programmed seriously.

故此，按照现有的气门芯装配工艺，运用Petri网对气门芯装配进行了数学建模，并对之进行了装配仿真，得出理想状态下的最优方案，为研制高效的气门芯装配系统提供了必要的前提条件和宏观指导； 3对装配系统的整体结构作了深入研究与规划；对9套送料机构和5套装配夹具进行了大胆的创新设计，使得整套系统结构紧凑，装配夹具性能优良，尤其是镦顶夹具的设计，为作者得意之作； 4控制系统硬件进行了精心选型，软件进行了认真编写。

The simulation points out a way for designing and manufacturing nanomaterials with totally different microstructures.2.The linear homopolymers have been added into a ABC 3-miktoarm star terpolymers system by dynamic density functional theory simulation. The areas of B phase domain and the interval between two nearest neighbour B phase domains shift with the accession of the linear polymer.3.A Petri net model was built to simulate the heat shock response in E.coli.

我们构建了大肠杆菌热休克反应的Petri网络模型，并应用化学反应动力学随机算法进行了模拟计算，观察其动力学过程，通过观测体系中平衡态下分子数目与反应速率常数间关系，总结了反应对体系平衡的影响规律，并由观测到的现象，对调控因子α的自身表达的调控机制作出推测：调控因子α的调控机制有可能是受网络控制的。4。

The performance analysis on a single-layered LEO satellite network is carried out by Stochastic Petri Net model-based analysis.

基于随机Petri网模型方法，对LEO单层卫星网络进行了性能分析。

The performance evaluation on a single-layered LEO satellite network and a double-layered LEO/MEO satellite network is carried out by Stochastic Petri Net model-based analysis.

基于随机Petri网模型方法，分别对LEO单层卫星网络和LEO/MEO双层卫星网络进行了性能分析。

Micro-scale effect and multi-field coupling are characteristics of the design of micro-electro-mechanical system. However, the current macroscopic structure-oriented CAD systems have not been able to meet the increasing requirements for the design in micrometer scale. Therefore, a flexible design modeling methodology for MEMS based on Petri net is put forward.

微机电系统设计具有微尺度效应和多物理场耦合的特点，而现有的面向产品宏观结构的CAD系统难以满足微米尺度设计需求，为此提出一种基于Petri网的MEMS柔性设计建模方法。

For the case where the firing sequence sets involved are Petri net firing sequence sets we present a method for synthesizing a control strategy by which the closed loop system can generate the supremal controllable subset of a given firing sequence set.

在目标序列集不可控而所考虑的序列集都是Petri网点发序列集时，提出了综合给定序列集的极大可控子序列集生成器的方法。

In order to resolve the problem of the inadequate capacity of basic Petri net,Aalst W M P proposed a so-called WF-Net model.

为了解决基本Petri网建模能力不足的问题，Aalst提出了有代表性的WF-Net模型。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。