Solid Model Design on the Features of Products

To research the problem of plastic art design and emulation of products with the virtual reality technology can short the product development cycle and reduce the cost. This paper discusses the information based on the product feature ,solid model with parameters, the structure and function of this system. Combined the product properties with its solid model. Proposed a method with CAD to create the model of the product based on features in the product design. Expressed its feature parameter and shape of model fully .In the case for a deceleration box the feature model has solved the problem of physical information ,geometry information and the informative process in its production management system efficiently.     

Application of UML Business Modeling in E-commerce System

The development of E commerce is booming. Now the management of some domain is converting from tradition to E commerce, this needs the application and integration of the latest information technologies for the maximum usage and share of network information resources. As a modeling language, Unified Modeling Language (UML) is well defined, easy to specify, powerful in function and applied widely. Business model concentrates on the business around the system, not every project requires business model. However, there are many situations where business modeling adds a great deal of value. Establishing system business model is the primary task when people make use of UML to establish E commerce system model and develop software system. By E commerce system the authors expound the use case, and propose how to use correct method to establishing E commerce system business model.     

A concentration and diffusion model of particulate pollutants in transition room environments

We developed an integral concentration and diffusion model based on the aerosol theory. We studied the representation method and actualization process for pollution substances under stable and unstable status using the integral concentration model. We studied modeling and computing processes based on reflecting and absorbing barriers using the diffusion model. The model we developed can improve understanding of the change and distribution rules of inner pollution particles in transition rooms. Moreover, it provides a reference for environmental quality control and evaluation, and trouble free operation of the laser experimental system.     

Realizing 3 Layers Transport Model in the Communication Between Embedded System and PC

This article puts forward a 3 Layers Model for the communication between embedded system and PC. It is based on the speciality of them and the TCP/IP model. The model defines the communicate process of embedded system to be three layers: Transport Layer, Control Layer and Application Layer. Each layer serves for its higher-up. It can keep the efficiency and credibility of the communicate process and the authors prove and analyse that in the article. the concept of the model is also suitable for Bluetooth, IrDA and other kinds of communication about embedded system.     

Study on Equivalent Frame Model for Large-span Prestressed Concrete Residential Structure System

In this paper, a study is carried out on large-span prestressed concrete structure system in residence analyzed by specially - shape column equivalent frame model. Applying fiber model column-beam element and shell element, a large amount of comparative analyses about large-span prestressd concrete structure under horizontal and vertical load is carried out. The parameter of the equivalent frame is confirmed based on comparison with the result of the man-sized structural experiment. It is proved that the equivalent frame model has high efficiency and precision especially for nonlinear analysis.     

Research on Abstract Information Model of an Editorial Office Based on CIMS

An information system is a complex information system. An information model based on CIMS should reflect everyday affairs of the editorial office the same as common information model. Moreover, it has some special aspects. The paper gives an common information model and its structure, along with the information model of an editorial office based on CIMS. The abstract information model of an editorial office is proposed with set theory and topology, and its application and significance are also given.     

多个数值预报产品对山西3次强降水过程预报性能的对比分析

为更好地释用数值模式的预报产品,采用客观分析和ETS评分方法,运用T639-thin模式、ECMWF-thin模式、Japan_thin模式及NECP模式对2014年7月发生在山西的3次降水过程的预报性能进行了效果检验和对比分析。分析结果表明：4家模式对欧亚大陆中高纬环流形式以及地面系统的调整和演变均有较强的预报能力;4家数值模式预报产品基本能把握雨带的走向,但对强降水过程中降水强度的模拟与实况相比偏差较大,而且对强降水中心的预报稳定性也较差;对于ETS评分,NECP模式的评分在3次过程中均较高,并且不同数值模式的24 h时效预报效果要优于其他预报时效。总体来看,对于环流形式的演变,EC模式模拟效果是最好的,其次是NECP模式,T639模式和日本模式次之;对于降水量级以及落区的预报,NECP模式预报较准确,具有较高的参考价值,其次是EC模式,而T639模式和日本模式预报的稳定性较差。     

The Mathematic Model of H eat Transfer for the Solidification of Bille t D u ring Continuous Casting Process

In this paper according to different cooling feafures in the secondary coolingzone,a two-dimensional mathematic model of heat transfer is developed,which is suitable for the op-eration of the casfer in Chongqin g Special Steel Plant,In the model, a finite difference method isadopted and different boundary conditions a different time-step is firstly used.Thus the model isof high precision with a shorter calculation time.The optimum secondary cooling system of the con-tinuous billet can be gained by aimulating and optimizing calculations using the model.     

Handling performace evaluation of a vehicle stability control system based on a driver model

By combining a driver model, a vehicle system dynamics model, and a vehicle lateral stability control system, the performance of the driver vehicle road closed loop system through a pylon course slalom test was simulated. The simulation was done in accordance with the GB/T6323.1-94 standard. Vehicle stability control system effectiveness was evaluated by measuring the mean maximum yaw rate and the mean maximum steering wheel angle. The simulation results showed the slalom test value with lateral stability control was approximately 4% higher than without a stability control system. This indicates the controlling system improves vehicle handling stability.     

A MODEL SYSTEM OF A LONG-TERM PROGRAM OF EDUSATION DEVELOPMENT AND ITS APPLICATION

This paper studies a long-term program of education development in the light of the theory and method of system engineering.A complete mathematical-Simulant model system is used to describe the internal regularity of an edu-cation system inside a social-economic tystem,and to put forward a set of efficient method for education development programming.The mathematical-simulant model system dis-cussed in the paper is put to practical use in a regional education programming.     

温室蝴蝶兰生长动态模型设计与实现

为了对温室蝴蝶兰生育过程的基本规律和量化关系有一个清楚的理解和认识,并对其生长系统的动态行为进行预测,从而辅助进行对蝴蝶兰生长和生产系统的适时合理调控,研究建立了以太阳辐射为基本驱动因子的温室蝴蝶兰生长发育动态模型,进一步开发出基于WindowsXP的计算机模拟系统。模型系统采用C++ Builder6.0语言编程技术,主要包括太阳辐射、碳同化、干物质分配等重要模块,可以输出干物质积累量、光合作用率、叶面积指数、叶片数与花朵数等参数变量,具有较完善的功能,模拟系统在界面和功能上能够达到较好的统一。对山东省济宁市农业高技术园区温室内蝴蝶兰进行模拟检验分析表明,模拟结果与实测结果符合较好,模型系统可以动态预测蝴蝶兰光合产物积累量等重要变量指标,研究认为该模型系统是研究蝴蝶兰生长发育特性及优化管理的重要工具。     

Recommending Trust Model Based on Behavior for Distributed CA in MANET

Mobile Ad Hoc Networks(MANET) is a multi-ho Pand instant self-organized autonomous system of a collection of wireless mobile nodes.A multi-domain full-distributed Certification Authorities system model was proposed founding on its trait of territorial communication.The thesis researched this model and proposes a new model for the interoperability between virtual Certification Authorities named extended recommending trust model based on behavior.It can improve the system's security,retractility and robustness by dynamic trust chain maintenance with feedback information in the actual course.     

A METHOD OF SYSTEM IDENTIFICATION AND MODEL REDUCTION BASED ON TIME-DOMAIN RESPONSE OF A DYNAMIC SYSTEM

This paper combines model reduction with system identification by means of time-domain function approximation, and presents a new time domain method of direct identification of linear reduced model and model reduction, and demonstrates existence theorem of its solution and criterion of order determination. Simulation tests show that the method is simple, accurate with few data requirement.     

Early Warning of Risk for Transportation Infrastructure Projects under a PPP Model

Based on characteristics of transportation infrastructure projects under a PPP model, an early warning risk index system for the private sector was put forward. The system is comprised of 15 indexes from five aspects, including risks associated with politics and law, economics, credit, construction and operation. An early warning risk model was constructed by applying fuzzy set theory and matter element theory. The fuzzy set method helps calculate the weight and evaluation values for qualitative indexes, thereby avoiding the limitations of individual decisions. The matter element method can evaluate comprehensive risks by using the comprehensive relations, is easy to use, and directly gives results. Further empirical research was conducted that verifies this method is scientific and applicable.     

A NEW DISCONTINUOUS CURRENT MODEL FOR SCR DC MOTOR SPEED CONTROL SYSTEM AND CURRENT ADAPTIVE CONTROL

The paper presents a new approximative model suitable to discontinuous current and continuons current in the three-phase controlled bridge rectifier DC motor control system. This model offers a new approach for discontinuous current adaptive control.As an example of application of the model, digital simulation results of discontinuous current adaptive control in a double-closed-loop control system are presented.     

基于知识模型的作物适应性评价专家系统设计

系统引入了知识模型概念,建立了以知识模型为特征的知识系统,将知识工程、数据库有机结合,采用正向与反向相结合的推理控制策略,建立了基于知识模型的作物适应性评价专家系统,实现了作物适应性评价的计算机辅助决策,具有较强的跟踪解释能力。用本系统对江苏省地区小麦适应性还进行了实例分析。     

A Decision-making Framework Model of Networked Cooperative Product Development

The objective of decision-making of Networked Cooperative Product Development is analyzed. The objective system of decision-making is proposed, which is constituted of six decision-making factors including T (time), Q(quality), C(cost), R(resources), S(security and secrecy) and K(knowledge). Basing this objective system, the TQCRSK decision-making model is constructed. Finally, a case study in which a practical decision-making problem in an application of Networked Cooperative Product Development is analyzed and solved successfully with the model shows the TQCRSK model is practical.     

A MODLE OF SYSTEM DYNAMIC FOR URBAN LAND PLANNING

This thesis uses the theory and method of the system dynamics to analyze the characteristics of the urban land planning system and set up the urban land planning system dynamic model, The model could describe the influence and request of factors of the society. economy and environment to the urban planning by using the system, the quantitative and the dynamic methods. By adjusting the parameter and repeating model imitation, the model could provide the possibility of realizing the present land planning and provide the quantitative analysis method for the planning department to make or adjust the land planning, and assist the government department to make decisions.     

基于大数据的食品安全标准体系评价模型研究

基于大数据的食品安全评价模型,依照社会监管机制,围绕食品安全问题的责任主体展开研究。基于大数据技术,建立了食品安全三维空间模型,并构建其标准化体系。建立研究食品安全问题评价模型,按照食品安全的前中后期构建评价指标,全面涵盖了食品安全问题的所有阶段。利用网络层次法对食品监管情况进行评价,通过数据调研,构建全面的监管评价数据模型。试验结果表明,本研究具有极高的可靠性和有效性,并可用于指导食品安全问题的体系建设,具有重大的现实意义。