Reliability Research of Computerized Voting System

ＲｅｌｉａｂｉｌｉｔｙＲｅｓｅａｒｃｈｏｆＣｏｍｐｕｔｅｒｉｚｅｄＶｏｔｉｎｇＳｙｓｔｅｍＴｏｎｇＹａｎｌｉｎｇ（童彦伶），ＴａｎｇＪｉｎｇｘｉｎ（唐竞新）ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａｔｉｏｎ，ＴｓｉｎｇｈｕａＵｎｉｖｅｒｓｉｔｙ，Ｂｅｉｊｉ...     

Evaluation Model of System Survivability

This paper puts forward a survivability evaluation model, SQEM （Survivability Quantitative Evaluation Model）, based on lucubrating the main method existed. Then it defines the measurement factors and parses the survivability mathematically, introduces state change probability and the idea of setting the weights of survivability factors dynamically into the evaluating process of SQEM, which improved the accuracy of evaluation. An example is presented to illustrate the way SQEM works, which demonstrated the validity and feasibility of the method.     

Evaluation System and Actualization of Selection Supplier in ERP Enterprise

Suppliers become an essential factor of enterprise competitiveness. The analytic hierarchy process is a kind of Decision-making method with the combination of quantity and quality. This paper presents the evaluation system of supplier selection, using Analytic Hierarchy Process （AHP） method to select the optimum supplier in Enterprise Resource Planning （ERP） enterprise. In order to reduce factor of manmade and increase exactitude, this paper innovates to use a real database in ERP system for evaluation. It also gives an example that one enterprise selects supplier.     

A Knowledge—based Stampability Evaluation System

The aim,characteristics and requirements of stampability evaluation are identified.As sampability evaluation is highly skill-intensive and requires a wide variety of design expertise and knowledge,a knowledge-based system is proposed for implementing the stampability evaluation.The stampability evaluation knowledge representation,and processing phases are illustrated.A case study demonstrates the feasibility of the knowleged-based approach to stampability evaluation.     

Evaluation of Eco-Environmental Frangibility Based on Remote Sensing and Geographic Information System

The eco-environmental frangibility is studied by choosing the factors of land use class change and vegetation cover rate, and the equation of eco-environmental frangibility and its evaluation system are established based on remote sensing （RS） and geographic information system technology （GIS）. Four different years of TM images are selected to calculate land use change grads and vegetation cover rate, and the relationship between the two factors and eco-environment frangibility index are build, taking Fuzhou as an example. The character of times change and space distribution of eco-environment frangibility are described. The result indicates the area of eco-environment frangibility increased 2.6% in Fuzhou during twelve years, and expands from the region between infield and forest land to forest land in space distribution.     

A Research on Internal Mechanism of Evaluation System

Evaluation is that a subject evaluates an object with certain value criterion, which is the premise and foundation of decision. The evaluating problem is becoming one of the popular issues in academe. In this paper, the essential meaning of evaluation is defined firstly, and evaluation process analyzed: putting forward the problem of evaluation; defining evaluation subject, evaluation organizer and evaluation criterion and method; processing and feeding back evaluation results. According to the essential meaning and process, the evaluation support system (ESS) is established, consisting of four function modules: problem definition module, data extraction module,mold database module and man-machine communication module. Based on the complexity of factual problem, the group evaluation support system(GESS) is established, which is an integration system of many valuators‘ wisdom, experience and corresponding ESS. GESS is used to support group valuators to solve semi-construction evaluation problem on the basis of computer and network in order to acquire scientificity and objectivity in the evaluation of big system.     

Part Machinability Evaluation System

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On Normalization of Comprehensive Evaluation System with Complex Uncertain Information

IntroductionAnevaluationisoneofthebasicissuesfordecisionmaking.Itdealsnotonlywithnaturalsciencebutalsowithsocialscience,managementscience,physiology,psychology,andcognitivescience.Thus,anevaluationisamultidisciplinaryfield.Ingeneral,anevaluationsystemisamixedinformationsystem,i.e.,relatedevaluationinformationdealsnotonlywithcertaininformation(suchasthedatumfromaccuratemeasurementforcertainobjects)butalsowithuncertaininformation(suchasevaluationterms,sensoryinformationontheobjectstobeevaluated,…     

Design and Implementation of DSP—Based IEEE802.16a OFDM System

A set of integrated Orthogonal Frequency Division Multiplexing (OFDM) modulation and demodulation system is proposed and its performance is verified in reference to the standard of IEEE802.16a for WMAN. The design, combined with analogy front-end, adopts Texas Instrument ( TI ) Company's 6701 evaluation module (EVM) to construct digital Intermediate Frequency (IF) platform. A DSP-based baseband processing software module is embedded into the system. The proposed scheme makes it possible for users to select various software modules to set up corrections with different throughput performance. Taking into account the given hardware configuration, the design aims to optimize the algorithm modules to accomplish better system performance.     

Lifetime Evaluation of Medium and Small Size Power Transformers—— Part 1 : Theory

ＬｉｆｅｔｉｍｅＥｖａｌｕａｔｉｏｎｏｆＭｅｄｉｕｍａｎｄＳｍａｌＳｉｚｅＰｏｗｅｒＴｒａｎｓｆｏｒｍｅｒｓ—Ｐａｒｔ１：ＴｈｅｏｒｙＧｕｏＹｏｎｇｊｉ（郭永基），ＤａｉＹｏｕｊｉｅ（代有杰）ＤｅｐａｒｔｍｅｎｔｏｆＥｌｅｃｔｒｉｃａｌＥｎｇｉｎｅｅ...     

Protease Selection and Technology Optimization in Biofinish of Wool

A process for the shrink - resist treatment of wool by protease with a hydrogen peroxide pretreatment (the Perzym process) has been studied. A protease, selected from several commercial proteases, has been found having higher activity in shrink - resist treatment, and its optimum technological conditions, which confer wool better shrinkproofing and less strength and elongation loss, have been obtained by an orthogonal factorial design approach. The study shows that it is possible for the wool to be conferred excellent machine washability by the Perzym process.     

Evaluation of Eco-efficiency and Effect on Environment of Remanufacturing——A Case Study of CNC-remanufacturing for Used Machining Tools

A case of remanufacturing used lathes via CNC technology is introduced, whose environmental and economic benefits are evaluated respectively. The results indicate that these environmental and economic benefits are remarkable, which are directly affected by remanufacturing design, more than 90% materials in used lathes are reused. Finally, the causes of economic and environmental benefits of remanufacturing machine tools are put forward. The remanufacturing design method, implementation procedure, and evaluation method of economic and environmental benefits presented are helpful for other equipment remanufacturing.     

The Optimization of Preventive Maintenance Scheduling for Production Machine of Production System in Finite Time Horizon

The recursion relation of preventive maintenance (PM) cycle is built up concerning the concept of effective age and age setback factor proposed in this paper, which illustrates the dynamic relationship between failure rate and preventive maintenance activity. And the nonlinear optimal PM policy model satisfying the reliability constraints in finite time horizon following Weibull distribution is proposed. The model built in this paper avoids the shortcoming of steady analytical PM model in infinite time horizon and can be used to aid scheduling the maintenance plan and providing decision supporting for job shop scheduling.     

Sense Estimation and Instrumental Evaluation of Fabric-Evoked Prickle

ClothingcomfortClothingcomfortisusedtodescribethewholesensoryperceptionsofhumanbodywhenonewearsclothingnexttoskin.Itissuchacomplicatedsubjectiveperceptionthatitisveryhardtoexpressquantificationally.When“clothingbodyenvironment”systeminteracts,complexpsychologicalandphysiologicalresponsesarise,andthusvarietiesofperplexingreceptsareformed.Theseperceptionsincludeatleastthreeaspectsoffeelings:heatandhumidityperceptions—warmorcold,dampordry,etc.;tactileperceptions—smoothorcoarse,prickleoritch,e…     

Study and Development of a Simulation System for Dynamic Evaluation on Man-machine Interface Design of Advanced Main Control Rooms of Nuclear Power Plants

Since the man-machine interfaces (MMI) of a main control room provide the control platform of a nuclear power plant (NPP),the development of the design quality of MMIs plays a very important role in the operation of a NPP. With the development of digital technology, the development of the advanced main control rooms (AMCRs) has become an inexorable trend. Therefore, the positive and the negative effects of AMCRs on human factors engineering need to be evaluated. For this p~, a simulation system has been studied and developed to quantitatively evaluate a MMI design from the viewpoint of human factors. The simulation system takes advantage of computer simulation technology to simulate an operating process of an interaction between operators and a MMI design under an instruction of an operation procedure of the AMCR of a NPP. Meanwhile, the necessary data are recorded for evaluation. It integrates two editors and one simulator. In the paper, the simulation system is presented in detail. Furthermore, one sample is given to show the results of each of these three subsystems.     

Optimization of Permeability Tensor Characteristics of Anisotropic Reservoir and Well Pattern Parameters

The problems of well pattern arrangement, well array direction, and well array spacing ratios for anisotropic reservoirs were studied using tensor analysis. The problems were formulated as a bilevel programming model which was solved using a genetic algorithm. The results show that if the permeability in one direction is much higher than in another direction, the wells should be aligned along the high permeability direction. The analysis provides a theoretical foundation for well pattern arrangement in fractured reservoirs as well as in channel sand reservoirs.     

A Survey of Web Information System and Applications

The fourth international conference on Web information systems and applications （WISA 2007） has received 409 submissions and has accepted 37 papers for publication in this issue. The papers cover broad research areas, including Web mining and data warehouse, Deep Web and Web integration, P2P networks, text processing and information retrieval, as well as Web Services and Web infrastructure. After briefly introducing the WISA conference, the survey outlines the current activities and future trends concerning Web information systems and applications based on the papers accepted for publication.     

Philosophical Views and Basic Theories of System Dynamics

System dynamics, founded by professor Forrester at Massachusetts Institute of Technology in 1956, is a discipline which analyzes and studies the system of information feedback. Basic views of theories of system dynamics distinctively show its dialectical characteristics. More attention should be paid to the features of complicated nonlinear systems. The model simulation of system dynamics is a kind of structure-function simulation. One of the remarkable advantages of system dynamics is that it can handle problems of high order, nonlinear and multiplefeedback system.