网络分析

Three-tie star network based Browser/Server model is considered according to the comparisons between information technology and control system development and the analysis of centralized network building. On the other hand, the design thinking of the application software based the network is showed and the leading roles of Web technology are informed.

本章根据计算机信息技术和控制系统发展之间的比较和网络集中架设方案的分析，提出了系统网络架设方案，即基于B/S模式的三层星形网络结构；另一方面对此网络结构的应用软件的设计思想进行了说明，确定了Web技术在本软件系统的主导地位。

The article mainly introduces the socket communication mechanism ,makes a detailed analysis on the step and method of socket programming in Java language and also gives an application example.

基于Java的多线程机制和流式Socket的网络编程是设计并行网络通信程序的一种有效方法，文中介绍了Socket的通信机制，详细分析了Java语言中的Socket编程的步骤和方法，最后用Java实现了流式Socket通信

By analyzing the equivalence of fuzzy system and single-layered neural network, stable single-layered neural network adaptive control approach for nonlinear systems is proposed.

在分析模糊系统和单层神经网络等价性的基础上，提出非线性系统的单层神经网络稳定自适应控制方法。

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。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

The paper treatments the time series by the artificial nerve network technology, defines the network structure by the self - correlation analysis, sets up the artificial nerve network model of well irrigation paddy water demand for uncertainty relation between inside and outside factors of water demand series.

应用人工神经网络技术处理需水量时间序列，通过自相关分析，确定网络结构，建立了井灌水稻需水量的人工神经网络模型，解决了需水量序列内部及其外部诸多影响因素之间的不确定关系，预测精度较高，可在灌区决策管理中应用。

In order to gain the result of the safety assessment of CFST arch bridge, based on the traditional safety evaluation methods, artificial neural network and analytic hierarchy process, a safety evaluation method based on radial basis function neural network was presented.

以全桥安全性评价为总体目标，在以往桥梁安全性评价方法的基础上，引入人工神经网络理论，并结合层次分析法，提出了基于径向基网络的钢管混凝土拱桥安全性评价方法。

Basing on this, this paper proposes a generalized shortest path method. That is, by constructing an intermodal-network multi-ply graph which interrelates the data and information in transit with the nodes and sides of the graph, adding virtual origin and destination stations to the graph, and then analyzing transport costs and transfer costs, this paper applies the Dijkstra algorithm to solve the intermodal optimal transport path problem so as to get the intermodal transport plan with the least generalized costs.

在此基础上，提出一种求解最佳运输路线的广义最短路法，即通过构建多式联运网络多重图，将运输过程中的数据、信息和图中的节点、边关联起来，然后对运输费用和中转费用进行分析估计，并通过在联运网络图中加入虚拟的发、到站，使得该问题可用Dijkstra算法进行求解，从而获得广义费用最少的联运方案。

Case studies show that the FNN model is superior to a general BP neural network model.

实例分析显示：与普通BP网络模型对比，模糊神经网络模型具有更好的预测效果。

Firstly, the article introduces the concept of the virtual properties of online games, characteristics and law attributes; Secondly, some present situations for the domestic disputes are analyzed and some problems are presented.

首先，文章分别介绍了网络游戏虚拟财产的概念、特点、法律属性；其次，对目前国内一些常见纠纷形式进行了分析，随后又根据我国当前的实际情况与世界上其他国家所采取的措施针对本文提出了几点主要的建议；最后文章对未来网络游戏虚拟财产相关问题的完善解决抱有美好的展望。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。