Model of Information Integrating in CIMS Based on the Object-oriented Method

Information integrating is the most important key to CIMS,which is the base of the function integrating and all others.Because of so many kinds,so complicated structure,so many different sources and uses that the information in CIMS has,it is necessary to build a popular Information Integrating Model. The model of information integrating in the thesis bases on the enterprise model,which is presented by ISO(International Organization for Standardization).According to the object-oriented method,the process of modeling begins with classifying the information,and then describes the definition of the attributes and the structural relation of those objects. By means of the idea of Encapsulation and Inheritance,the destination of information integrating can be arrive and the model of information integrating can be set up. The model which is based on the share information is helpful to finish the function integrating and the whole CIMS' construction. Moreover,the system which is developed following such program can be reused for many times and the developing circle of CIMS can be apparently shortened,too.     

Corporate Governance of Technological Alliances of Enterprise

Technological alliance of enterprise is an organization of technology innovation. The proper selection of corporate governance of technological alliance can provide advantage with cost-down, and also it is the decisive factor of success for technological alliance. Based on the comparatively research of the diversity in the structure of corporate ownership and organization, control right distribution, relationship of partners, etc, this paper indicates that the corporate governance of technological alliance is cooperation relationship of the knowledge capital, which makes the base of partner's capability and sharing the control right. The corporate governance of technological alliance is compound of negotiation mechanism, reputation mechanism and trust mechanism. Further analysis of them is also provided.     

A Study on Artificial Neural Networks-based Medical Equipment Demand Forecast

In order to uncover the complex relation in the inventory data and lower the inventory level, based on the idea of black box method, all factors that influence demand are identified firstly. Then an initial forecast model of BP neural networks that adopt LM algorithm is established, and is trained using hospital inventory's history data. The interrelation's information of each factor that influences demand is stored in the link weights matrix W dispersedly. The final forecast model is obtained. We use the model to forecast the demand of medical equipment in Daping hospital. Based on it, the inventory cost is reduced enormously. The theory for the inventory system can be used to make management decision.     

Optimal model on integrated production planning andscheduling of steelmaking and continuous casting process

Considering the uncertainty and complexity of production planning and scheduling in steel making and continuous casting, an optimal simulation model is built. Based on the analysis of the logistics in steelmaking process, the casting plan is regarded as the global goal, and the procedural information is taken into account, as well as the local evolution rule that abstracted from scheduling rule. To simulate transferring of materials in the process, the state of operation sites are updated as a result of the global goals, process information and local rule. The goal directed simulation is carried out based on the self organization evolution mechanism. Finally, an optimal integrated production plan is made by a continuous simulation evolution. A simulation case for eight hours production plan shows that the model is valid and efficient.     

THE DECENTRALIZED LOAD FREGUENCY CONTROL FOR MULTI-AREA POWER SYSTEMS

A decoupled load-frequency control model of a multi-area interconnecting power system is presented and a practical and effective decentralized control method is developed, which needs only its own state information and the information measured in it. It can also improve the stability and dynamic characters of the system. The dynamic simulation of the numerical example of a three-area interconnecting system with this controller showes the dynamic characters are almost the same as the centralized full state feedback optimal control.     

The Value of Section Model Making in the Teaching of Architecture Major in Colleges and Universities

Section model making is an important part of teaching of architecture major in colleges and universities,which can train students’ comprehensive ability and professional quality,and make students meet the needs of the construction industry.In order to ensure the quality of section model making,it is necessary to collect and analyze the data in the early stage to ensure the smooth process of manual production.As far as the production process is concerned,it is necessary to do a good job in the early planning and control of the manual modeling,and pay attention to the coordination and cooperation of the group and the later inspection.     

Trust management scheme based on community model for mobile Ad hoc networks

The security issues in mobile Ad hoc network, especially caused by inner malicious nodes are analyzed. By tracking the behavior of nodes, trust level of each node can be evaluated and managed; then actions of malicious nodes will be constrained and the security and reliability of entire network are enhanced. According to the features of Ad hoc. The scheme proposed in not only extends the conception of trust but also include the trust computation model and trust management mechanism. Simulation experiments show the novel scheme is more efficient than other trust schemes in traditional protocols.     

Spatial and temporal distribution of temperature of drivage roadway air after methane explosions

The spatial and temporal distribution of air temperature after methane explosions in drivage roadway is studied based on the relationship between overpressure and temperature which is found based on gas equation, dynamic and functional principles. The moment temperature distribution after methane explosions under different concentrations of methane is got through solution to the overpressure model and connection with experimental data. Based on unsteady mass and heat transfer, and other physical phenomena, the controlling equations of mass, momentum and energy are founded. The instantaneous temperature distribution after methane explosions is used as one kind of initial conditions of RNG k-ε model to solve the spatial and temporal distribution of temperature in drivage roadway. Studying on it has great meaning to understand the mechanism of sub-fire or sub-explosions induced by initial explosions. It could provide some understanding and helpful methods to prevent and control those sub-disasters.     

Logistic map controlled secure arithmetic coding and its application in image encryption

A logistic map controlled secure arithmetic coding is proposed, the Logistic map is used to control the order of the symbols in the model and change the probabilities of the symbols, which is applied to the image encryption. The proposed scheme makes the image transmit more secure and comfortably on the Internet, and that is done at little expense in terms of coding efficiency. In the coding process, it ensures the uniformity of the model being changed by the chaotic sequence, thus to meet the security requirements of image compression. The algorithm can be applied to any arithmetic codec based on multimedia data including video, image and audio. Its most strength compared with other cipher mode is that, there is a significant reduction in the redundancy of information during the compression process, and it is robust when attempting to estimate the information of the image and discovering the key. The scheme can effectively resist differential analyses from both cryptography and coding.     

Simple Shear Test of Interface between Sand and Structure under High Stress

By using a simple shear apparatus that is developed from RMT-150B,a series of simple shear tests of interface between saturated sand and structure under high normal stress were carried out to study constitutive law and shearing stiffness of interface to provide some theoretical evidences for design and calculation of projects concerned with mechanical problem of interface.In test,sand was consolidated in upper shearing box firstly,then,shear was started and testing data was recorded under high and constant normal stress.During the process,sand can deform relatively freely.It is shown that the relation curve between shear stress and shear displacement under high normal stress in simple shear tests is different from that in direct shear tests,and the complete shearing deformation process of interface under high stress can be described as a nonlinear elastic-perfect plastic form;Weibull distribution with three parameters can overcome the mathematical deficiencies of hyperbola in NEPP.The new model which is established by substituting Weibull distribution for the hyperbola of NEPP better agrees with the testing data.The regressive results of the initial shearing stiffness demonstrate that the linear function is slightly better than power function to express the relation between the initial shearing stiffness and normal stress.Based on the new interface model,the formula of tangential shearing stiffness is proposed,meantime,the change trend of tangential shearing stiffness of the new model is compared with that of NEPP.     

AuthorizedAdministration of Electronic Documents in Enterprises

When prominence of security problems increasing,it is of importance to savethe sensitive electronic documents into database. The user-role mechanism is employed in the process of managing documents. However, it can't provide the flexibility of authorized access because of the dynamic generating particularity of the electronic documents which need maintaining continually. A tree model of entity authorization is introduced based on discretionary access control mechanism. The approach can grealty simplify the authorization, increase the flexibility and is more accordant with the practical requirement of enterprises.     

The Storage of Tree Data Structure by Gradation and Classification and Application in CAD for Engineering Structure

The traditional storage of tree data structure is according to the relation of the elements' frant-and-back. Since it is difficult to define the frant-and-back relation of graphics units in CAD for Engineering structure, the application of the tree structure becomes inconvenient. The authors change the storing method for the tree structure into gradation and classification. And a graded equivalence relation of graphics units is brought forward, which grade the graphics units with the equivalence relation. By using this storing method, we can easily accomplish some operations, such as picking up the subtree with a certain character, deleting a node, insert a graded and classified node, etc. The example provided indicates that the storage by gradation and classification can speed up searching and process the data of the subtree by gradation and classification expediently. This kind of storing method for the tree structure is applicable for data which contain the graded equivalence relation.     

A Constitutive Model for Structured Clays based onTwo Different Types of Overconsolidation

Structure has a major influence on the stress strain relation of soil, which implies that the constitutive model should reflect the its structure. Based on the investigation , the over consolidation (OC) of the soils was made up of two different types, which were structure induced OC and stress induced OC. And then the structure induced OC and stress induced OC were united. Structure induced OC index was used to represent the degree of structure and the cam clay model was extended. The shape of the yield surface was the same as cam clay model, whise the size was equal to the sum of the structure induced OC and stress induced OC. And the change in size of the yield surface was decerminated by the volume harden function and the structural damage function. The associated flow rule was adopted in the model. Afterwards constitutive model for structured clays was presented. The concept of the model is clear and the parameters are simple. The ability of the model is good by firstly application and it can describe the character of the structured soils.     

Application of Silk Fibroin in Biomedical Field

The relative characater of silk fibroin in biomedical application is discussed ,which focuses on the problems about biocompatibility and degradation mechanism while silk fiber is used in vitro .As the result,it is easier to keep the biocompatibility of silk fibroin by the characater of multiple styles of crystallizes and construct the net structure. The modification of membrane structure of other natural material is also discussed. as well as the chemical way in the main application statue in drug-loading material , artifical organ or tissue scaffold. The degrading of silk fibroin in vitro is also controlled by the temperature and mechanical enviroment as well as the chemical component,and it is should be more comprehensive with the factors of biomechanic and biorheology as well as that of biochemical taken into considered in the investigation of transformation mechanism of silk in vitro.     

Research of Investment and Cash Flow Constrain Under Ownership Concentration

This article summarizes the theory achievements,arguments,the investment and ownership concentration model which studied in investment-cash flow and the stockholder's rights structure questions.The financing restraint is explained.The special social stratum shareholder is elaborated which influences relation between investment and internal cash flow by the financing restraint existing in the enterprise,the management opportunism hypothesis and the information assymetrical theory separately.Finally the authors induce and study the real diagnosis model of the supposition(above).The model is important for the empirical study of ownership structure influencing to corporate investment.     

Simplifying and validating the model of wet flue gas desulphurization spray tower for 660MW units

The wet limestone gypsum flue gas desulphurization system for 660 MW units of a thermal power plant is taken as the object, based on the study of the mass transfer between the gas phase and the liquid phase、chemical reaction mechanism in desulphurization tower and reasonable simplified hypothesis, the turbulent mathematical model of the spray type tower is developed by the methods of concentration of parameters and module modeling. The model is validated by the test of stable state and the turbulent experiments, which can be used as the basis for developing the real training simulation model of the desulphurization system.     

Adjustive Mechanism Design Based on Planar Constraint Uncertainty

For normal planar closed chain mechanism, it is based on ideal planar constraint condition. The authors took crank leader mechanism as an example, and analyzed influences resulted from uncertain factors, such as manufacturing error. The result shows it belongs to statically indetermination mechanism. After analyzing its over-constraint and eliminating it, in this way, it become statically determination mechanism and can be assembled without obstacle. However, in the process of practical running, the mechanism can give birth to new kinematic constraint, frictional constraint and dynamic constraint etc., so over constraint emerges again. Therefore, it is necessary to analyse its adaptability in total running process. The conclusion shows that design of adaptability mechanism normally eliminate geometry over constraint at first, then it is analyzed that whether there is new over constraints from all kind of external constraints in the process of running.     

A novel dynamic trust model for network service

A novel dynamic trust model for network service is proposed. The corresponding relationship of trust evaluation and interval-valued intuitionistic fuzzy numbers are introduced in the computations,compounds,and general operations of experience of trust,neighbor recommendation trust and agency recommendation trust,which are based on trust demand attributes. Meanwhile,the trust attributes’ weight factors are determined by precise function proportion,while time series weight factors are defined by the inverse form of exponential distribution. And the trust service is finally distinguished by the result of general trust scoring function and psychological factors. Simulation results show that the model can effectively build trust relationship between entities and restrain attacks from malicious entities.     

Dynamic Simulation on the Hoisting Mechanism of a Crane

Considering the difficulties of mathematical analysis and the complex computer programming of numerical methods in solving dynamical problems of the multi-body dynamic system for the hoisting mechanism of a crane, in this paper, a multi-mass-multi-freedom model is set up and the simulation system of the model is built up applying MATLAB/SIMULINK toolbox. The differential equations of the model is solved with adaptive-step fourth-order Runge-Kutta method. In the study, the typical work conditions of the hoisting mechanism, such as start rise from ground, start rise/down in air, brake conditions, were simulated. The dynamic performance of the hoisting mechanism is studied and the results obtained are valuable to practice. This study improves the modeling accuracy of the hoisting mechanism and the results of precious theoretical analysis and numerical computation conclusions. The movement of every discrete body of the system can be modeled applying the methods suggested by this study and more consistent results between model and actual hoisting mechanism can be achieved.     

An Artificial Neural Network Circuit Model for Routing Communication Traffic

A new fluid artificial neural network circuit model for routing communication traffic is proposed.The features of the model are that it can make use of all topology information of the network,and the optimization calculation is performed with electric circuit,and the most optimum route for communication traffic in the network can be obtained in circuit reaction time.Simulation results indicate that the model is correct and feasible. [WT5HZ]