Abstract:According to the basic hypothesis,a simplified formular is provided to determine the flexural capacity of concrete-fiued circular steel tubes by using the balance of force on the dangerous section.The reliability of the formula is validated by results of examination,results of design codes and standards of other countries.

Abstract:The preparation of modified PAFC containing polysilicate salt is studied in this paper.The best technological conditions is determined.Then,the product is applied to dispose of simulated dye wastewater.The results of flocculating experiments indicate that when the optical dosage and pH values of wastewater are 10.0 and 9.0,the decoloration rate will be over 98%.

Abstract:Expansive siol is distributed widely along He-Liu expressway.The comprehensive evaluating indicators of the expansive soil on engineering characteristics,such as minal components,the basic index of physical appearance,the compacted property,swell-shrink characteristics and strength and so on,are obtained by spot sampling and laboratory tests.The optimum moisture contents of weak and meduim expansive soils are determined under the different compacted power.The reliable evidence is provided for the scientific improvement in expansive soil area.

Abstract:According to traffic safety and driving quality of exposed-aggregate cement concrete pavement,through carrying out a large number of laboratory test and constructing trial road and testing it,the article analyzes major evaluation indexs such as number of exposed-aggregate point,texture depth,pavement driving-noise,surface level of exposed-aggregate.Mutual relations among exposed-aggregate point,texture depth and surface anti-skidding performance are illuminated,meanwhile,test methods and appraisal degrees to specific major evaluation indexs are researched respectively.It is vitally meaningful to assure or improve quality of exposed-aggregate cement concrete pavement.

Abstract:To study the effect of the ground boundary on the numerical simulation of external flow field around the automobile,two schemes are made to numerically simulate the flow field around a mini-bus and the author analyzes the results.The study reveals that the different ground boundary greatly affects the aerodynamic lift and the front tire lift but has little effect on the aerodynamic drag and the rear tire lift.Precision can be improved on the basis of the moving ground in the numerical simulation of the external flow field around the automobile.

Abstract:A vertical vibration dynamic model including a discrete elastic supported beam under moving loads with its foundation elasticity stiffness abrupt change is established.Aiming at speed-raised railway,dynamic finite element method is adopted in the paper in order to analyze the dynamic responsing regularity of the track structure under the condition of the original irregularities and different velocity of locomotive passing though the track with rigidity abrupt change.The computations show that the track irregularities and rigidity abrupt change caused by failure of fastener and sleepers have notable influence on response to the track structure.

Abstract:Stratospheric airship provides a variety of functions and uses.With the development of science and technology,many countries in the world have a strong interest in developing stratospheric airship.The present research situation and future development trend of stratospheric airship are surveyed and several key technologies are discussed.On this basis,the emphasis of future work of stratospheric airship is summarized and the reference data for future design of stratospheric airship is provided.

Abstract:通过灰度共生矩阵对肝脏B超图像的纹理描述和相关分类技术进行较全面的分析比较,将BP神经网络技术应用于纹理组织的分类处理中,并对B超图像自动诊断识别系统的软件设计技术进行了探讨.

Abstract:The characteristics of composite foundation with CFG piles are studied by finite element analyzing software,and various ground treatment methods are analyzed,such as cement-soil,pile-hat-net and pile-plank,to compare the differences of the rules of settlement and the ratio of the stress of pile and soil.It is indicated by study that the settlement of subgrade is the most but the ratio of the stress of pile and soil is the least and there will be a basin of settlement on the surface of subgrade when the subgrade is treated with cementsoil;while the settlement of subgrade is the least but the ratio of the stress of pile and soil is the most and the settlement on the surface of subgrade will be more regular when the subgrade is treated with pile-plank.

Abstract:For actuated-control system at isolated intersection,the extension green time plays a crucial role in the efficiency of actuated signal control.A suitable extension green time can eliminate the wasteful green time just because of waiting for a few vehicles and make itself perform efficiently,thus improving the traffic capacity,reducing delays and traffic accidents such as rear-end accidents.The paper makes some useful conclusions by comparing two kinds of the extension green time models through simulation.

Abstract:The paper describes liver ultra-sound images texture definition by gray co-occurrence matrix and probes a more comprehensive analysis by different classifying technology.The BP neural network technology has been applied to classification of texture tissue in this image analysis system.It also explores the software design technology of automatic diagnostic system of liver ultra-sound images.

Abstract:The database backup is an important way for the safety and stability of database information.This paper describes the method to backup and restore SQL SERVER database under the environment of Delphi.Easy and practical,the method has great practical value in the application of database system.

Abstract:Based on the IHS and wavelet transformation,a new image fusion can utilize the space detail and the function that wavelet transformation reserves the spectrum characteristic of the TM image.IHS scheme makes best use of the information in remote sensing images to be fused and prevents the loss of image information.

Abstract:Electrified Railway has been most potential traffic manners for its excellent dynamic and economic benefit.But it affects power system badly.This paper analyzes impact of traction substation on relay protection by combining with facts of Zhejiang-Jiangxi electrified railway and Jiangxi power system,and shows a plan of reply protection based on PSL 607 and CSC 109A digital protection system.It has been used well in Traction Substation.

Abstract:This paper studies some important DHT Topologies from an algebraic standpoint.To make a profound understanding of topologies,it analyzes their algebriaic properties through group and graph theory,which are valuable in improring current topology and designing topology.

Abstract:Semantic Web is the next-generation Internet,the Semantic Web Ontology is the realization of Description Logic.In the paper,we present an approach to convert ontology into a relational database schema which stores the instances of each classes and properties in separate tables and uses some views to reflect the relationship between the OWL objects.The proposed converting method has the advantage that it does not require extensive modification of the database structure when changes occur.It is suitable for small and medium-sized ontology change.

Abstract:In this paper,we discuss an application of wireless communication based on microwave guide in the signal transmission in quayside container cranes with a throughput of at least 100 Mbit/s with interference-resistance.It can meet the demand of inerrancy broad band communication,and provide a new choice for the monitor signal transfer of the cranes.

Abstract:In view of the cascading trip induced by backup relays that affects the safe operation of the system and may even cause blackout,after investigating the defects of the existing backup protection,this paper presents a robust fault-tolerance control by backup relay protection scheme based on identifying the flow transfer,and proposes to estimate the dynamic flow distribution after flow transfer occurs.The simulation in a New-England 10-machine 39-node network by the sofesare of PSASP shows that the backup protection strategy proposed to identify flow transfer works well.

Abstract:This paper discusses the modeling and simulation of the matrix converter.First,the basic principle of AC-AC matrix converter is described briefly,and the algorithm realization of space vector modulation strategy is analyzed in detail.Then,the simulated model of matrix converter based on MATLAB is established,and main waveforms are given.The simulation results verify the correctness of the model and control strategy.

Abstract:The technology and characterics of Ajax are introduced,a new method of SCADA real-time curve based on Ajax is put forward by examples to explain how to develop SCADA real-time curve based on Ajax.

Abstract:The design of front-end module is based on a single bus(1-Wire Bus) technology,and constructs topology tree of 1-Wire network by utilizing digital Thermometer DS18B20 to minimize occupation of MCU's hardware resources.The design of program completes its exploration by means of binary tree data structure.This design perfects the communication agreement of front-end module to guarantee reliability and accuracy of temperature acquisition.Meanwhile,it can transmit the exact data to the controlling center system in time.

Abstract:The management of resources and scheduling computations is a challenge in a grid,because the resources are geographic distributed,heterogeneous,dynamic.This article uses the Random Advanced Petri Net model to describe scheduling problems and improve Sufferage Algorithm.It considers the time used to access and transfer the input/output data before/after the execution,and the QoS requirements of users while pursuing the minimum completing time.The results of Ameliorate Sufferage algorithm can satisfy the QoS requirements of grid users.

Abstract:The design purpose,the system framework and the function of SMS Anti-counterfeit System based on GSM-Network are introduced in this paper.We divide system functions into sub-modules,among which we analyze the functions of nine sub-modules,which adopt the C/S structure to ensure the security and reliability of the system.The article finally discusses realization technology of the system which has realized the above functions.The data transportation among relevant modules can realize seamless design without artificial interference,except raw data primal entry.

Abstract:On the basis of deeply analyzing lighting in the game,a formal mathematical model is estblished,several algorithms with various solutions are designed,and a complete solution through MATLAB programming is given.The paper also compares efficiency of several algorithms,and gives some useful condusions,discussing its solutions.

Abstract:考虑了确定初始时刻温度颁的一类热传导方程递时反问题.运用拟逆法思想对一类热传导逆时问题进行了分析,最后给出方程的差分格式,通过传播因子法证明了差分格式的稳定性,并通过数值算例验证算法的有效性.

Abstract:在代理签名中,原始签名人能将数字签名的权力委托给代理签名人;而在盲签名方案中,签名者不能看到被签消息的内容,签名被接受者得到后,签名者不能追踪签名.结合代理签名与盲签名的优点,利用基于椭圆曲线上的Weil配对(Weil Pairing)的双线性映射,构造了一个高效的基于身份的代理盲签名方案.分析表明,该方案不仅满足代理盲签名所要求的所有性质,而且其效率也优于已有同类方案.

Abstract:针对近几年发生在我国较为频繁的软件盗版事件,通过建立博弈模型,对盗版事件的两方博弈主体,即软件初始制造者和软件盗版者之间的利益关系开展了博弈分析.在理论分析的基础上,提出了应对我国软件盗版事件频发的建议.

Abstract:We consider teh prollem of a backward heat conduction to determine the moment of the initial temperature distribution.by the idea of quasi-reversibility.Finally we give a difference scheme of the equation and prove the stability of the difference scheme by the Lax-Richtmyer method.Numerical result shows that our algorithm is effective.

Abstract:With proxy signature,an original signer can delegate his signing authority to a proxy signer who signs a message on behalf of the original signer.In blind signature scheme,a signing messages are unknown to the signer,which makes the blind signature and the identity of the requester cannot be traced.Based on bilinear projection of Weil Pairing,an efficient ID-based proxy blind signature scheme is presented by combining proxy signature with blind signature scheme.The analysis shows that the proposed scheme can satisfy all the required properties of a proxy blind signature.Furthermore,its efficiency is also better than that of the exiting schemes.

Abstract:With lots of events of software piracy in China in recent years,we establish the model of game theory,and analyze the interest relationship of the two-party subjects,such as the initial maker of software and the piracy of software.Based on the analysis of theories,we get some suggestions to deal with software piracy.

Abstract:In this article,a new class of threshold ARMA-ARCH model with random delay is proposed.Its limited behavior is discussed and the sufficient condition for its convergence is obtained.This paper makes threshold ARMA-ARCH model with fixed time delay to threshold ARMA-ARCH model with random time delay,so it can better imitate many substantial problems in the real world.On the other hand,this paper popularizes the ARCH model,which makes the model more adaptive to improve application to phenomena of price behavior fluctuation in financial market.

Abstract:The problems of small sample,non-linearity,high dimensions and local minimal value can be well solved by supporting vector machine in soft-sensor modeling.In consideration of the online measurement of the component content in rare earth countercurrent extraction separation process,algorithm of SVM with RBF kennel is applied to the modeling of the rare earth extraction separation process.The selection and effect of model-parameters are discussed.Through the simulations of the model,it shows that the component content soft-sensor model based on SVM has both preferable generalization and high velocity.SVM is an effective method for rare earth extractingprocess soft-sensor.

Abstract:如果QFP电子封装器件发生较大塑性变形,将影响其正常使用.利用有限元分析技术来讨论温度循环载荷作用下影响QFP焊点塑性变形的因素,为控制其变形幅度提供依据.