Abstract:In this paper,the concepts of generalized reversible ring and quasi-ZIn rings are defined and some of their properties are investigated.We prove that as a Armendariz ring,R is generalized reversible ring if and only if R[x]is generalized reversible ring;generalized reversible rings are 2-prime rings,and quasi-ZIn rings are 2-prime rings if some conditions are met.

Abstract:In this paper we consider a risk model with count-correlated claims.It is assumed that every main claim produce a by-claim.A integro-differential equation for the survival probability is derived,and explicit expressions for the survival probability are given in the case of exponential claims.

Abstract:回顾了国内外土壤采样装置的发展 历史，针对国内土壤采集的实际需求，确 定了液压振动式土壤采集装置的总体方 案。为了提高装置的可靠性与稳定性，进 行了液压系统管路的优化设计，设计了 具有双凸结构的采样管，进行了一般土 质与杂硬土质的采样试验。试验结果表 明，该装置既可以进行松软土质的采样， 也可以进行杂硬土质的采样。

Abstract:A rotation vector algorithm is applied as attitude matrix update algorithm in attitude measurement system.To ensure the system s real-time capability,a new method of repeated use of sampling data is proposed,which make up the deficiency of long sampling cycle in three-sample algorithm.The system hardware mainly includes angle rate sensor(ceramic static gyro CG-L53),signal sampling board(based on AT89S51 MCU),and computer platform(based on ARM CPU).Linux is introduced to design software in each model to real...

Abstract:In this paper,feature extraction and recognition of facial images is studied in order to resolve the highdimension problem,small size samples problem and non-linear separable problem that exist in face recognition technology.The proposed feature extract method based on Principal Component Analysis(PCA) and Fisher s Linear Discriminate(FLD) can solve the small size samples problem and the high-dimension problem by mapping the samples from a high-dimension space to a low-dimension Eigen space.In the recogniti...

Abstract:Considering the demands of manufacturing execution system for small and mediumsized enterprises and the complexity and high cost of information exchanges,a service-oriented information system is proposed.Compared with the traditional MES architecture,this system is based on web service technology,and can realize information sharing and high scalability of MES.An instance on this architecture is introduced to demonstrate the realization and invocation of several system functions

Abstract:Based on projection index function,projection pursuit cluster analyis is a process to analyze optimization problems under certain constrain conditions.This paper employs Particle Swarm Optimization(PSO) to solve projection index function,and constructs a projection pursuit cluster model to evaluate forest carrying capacity.Simulation results show that this PSO-based model is simpler and easier to realize with less parameters,compared with GAbased model.Moreover,the proposed model can give optimal solutions ...

Abstract:This paper proposes a web service selection approach based on fuzzy adaption considering similarity and reliability,which classifies and computes the QoS attributes according to the source of data.Fuzzy control method is used to transform nonfunctional attributes to real values between 0 and 1.Then recommended weight for users is computed by using feedback similarity and reliability formula.This approach can improve the accuracy of web service selection.

Abstract:Among the relevant literatures,efficient and effective block to malicious attacks is considered more by P2P trust model designers than"fairness",which is an important factor in improvement of the overall web performance.This paper classifies the behaviors affecting fariness in trust management,and focuses on hiden unfairness caused by unmalicious acts,then proposed a trust model.The simulation results show that this model can achieve load balancing while reducing the rate of malicious download.

Abstract:As a kind of wireless multi-hop network,the wireless Mesh network originated from the combination of wireless LAN and mobile ad hoc network.With a new network architecture,wireless Mesh boasts of great technological prospects.This paper introduces the wireless Mesh network s advantages over traditional WLAN network,and analyzes its implementation,features,routing protocols,and applications in extensive areas.

Abstract:Recommender system is one of the most important technologies in E-commerce,and the collaborative filtering algorithm is the most widely used technique in recommender system.In this paper,we proposed a collaborative filtering algorithm based on weighted tripartite network,which takes users,items and tags into account,and we also studied the degree of tags which may affect the user-user similarity computation.The experimental results demonstrate that the algorithm can solve the cold start problem with high re...

Abstract:This paper describes the planning,design and implementation process of the electrical grounding-line monitoring system.Working under the B/S(Browser/Server) mode,the system includes three parts of intelligent ground state monitor,remote observation points and monitoring center.Ground state of the power lines will be collected by the monitor and transmitted to the monitoring center through GSM.System key data is MD5 encrypted to ensure security of the system.Operation records by logging users is saved in log...

Abstract:As important oceanic environment information,the wind wave elements consist of wind wave kinematics parameters and wind wave structure parameters,which are all expressed in statistic form.The wind wave measurement has been a difficult task for a long time in ocean and water monitoring.A video and digital image system is proposed in this paper to monitor wind wave in a non-intrusive and automatic way.Through a novel inversion method of wind wave image of optical light remoting,and similarity searching & reco...

Abstract:Advanced impact testing device was employed to study the performance of the MOV under the lightning impulsion.Residual voltage change of the MOV active energy coordination,along with the coordination forms,were comprehensively analyzed in impact testing.Testing results showed that avalanche breakdown was the main damage form when the MOV absorbs more energy in the transient process.The test of MOV s AEC in serial and parallel connection indicated that compared with a single MOV,several MOV s parallel connec...

Abstract:A method of high order accurate resolution is proposed to track moving-interface using VOF,the fifth order WENO scheme for space discretization,the local Lax-Friedrichs numerical flux and fourth order Runge-kutta method for time discretization are used in the methods for tracking the moving-interfaces.A high-resolution method is proposed to track moving surface using VOF(Volume Of Fluid).The finite difference scheme of fifth order highaccuracy and high-resolution WENO(Weighted Essentially Non-Oscillatory) i...

Abstract:With the continuous development of components used for lightning protection,the thyristor surge suppressers(TSS) obtains extensive uses in the simulation and design fields of lightning protection products for its unique characteristics,such as accurate breakover,unlimited use times,quick response.Based on the the electrical characteristics and the PNPN four layer structure,the TSS subcircuit simulation model,considering the response time and the wave tail transition characteristics,is created with the Spice...

Abstract:Using the NCEP/NCAR reanalysis data,the CPC(Climate Prediction Center) monthly SST data of the Nino3 region as well as the ERSST data by NOAA during 1951—2002,the relation and its interdecadal change of the ENSO and the summer rain pattern of eastern China was studied.Results show:The response of the summer rain pattern of eastern China to ENSO abruptly changed in 1978.Before 1977,the correlation between them denotes weakly negative.After the abrupt change,it turned to significantly positive.Moreover,the sl...

Abstract:Gas sampling installations assembled by ourselves were used to study photocatalytic degradation of polycyclic aromatic hydrocarbons(PAHs) in cigarette smoke.PAHs in the samples were analyzed by gas chromatography with mass selective detection.Results show that the photocatalytic degradation effect of low-ring PAHs was determined by quantity of TiO2,while the photocatalytic degradation effect of high-ring PAHs was determined by intensity of UV-C light.Under weak UV-C light,photocatalytic degradation efficien...

Abstract:Sustainable coordinated development about population,resources,environment and economy is the current hot issues,which is related to the country s long-term future.According to statistical data from 1999 to 2008,we determined integrated development index of each subsystem in China.Meanwhile,we adopted the innovative method,which was combined grey relational analysis(GRA) and analytic hierarchy process(AHP),to calculate the whole system s integrated development index and analyze the coordinated development s...