- Most Read
- Most Cited
- Most Downloaded
2006, 23(1):6-7.
Abstract:This paper presents mainly the method of porting open source embedded RTOS uC/OS-II to DSP(TMS320LF2407A),which is a popular microcontroller.It solves the most important and difficult problems in the course of porting uC/OS-II,and the system after porting cut out.A porting has been implemented in on TMS320LF2407A experiment board and the system runs steadily and reliably under multitask environment.Many parameters have reached the demand of designing by testing.
2006, 23(1):8-11.
Abstract:This paper reviews recent research on seismic strengthening reinforced concrete beam-column joints in home and abroad paper presents results of experimental of strengthening techniques,including FRP,concrete jacketing and steel jacketing,points out shortages of recent studies and gives the research aspect of the research field.
2006, 23(1):12-15.
Abstract:when drilled grouting plie eancounter civil air defense shelter,authors adopted the construction plan of concrete pil casing,it guarantee the project times and quality,satisfying the design requirement.
2006, 23(1):16-18.
Abstract:Monitoring methods are the important content in informational construction,which play an important part in reinforcement design and slope stability evaluation.Based on the monitoring information of the course of 211 km in Gan-Yue freeway,including surface movement,borehole inclination and water table,surface movement,borehole inclination the article analyses the trends of the reinforced slope then evaluates the slope current stability,and raises some reasonable suggestions about reinforcement and drainage structure.
2006, 23(1):19-23.
Abstract:Destroy of concrete under loads was thought as a result of outside force in traditional views,while the author looked on it as a self-organization of components of concrete.This paper demonstrates the self-organized characteristic of the evolvement of concrete damage,then constructs the dynamic equations ofthe system think of the action of thermodynamic parameter such as temperature,freedom energy and entropy etc.in the evolvement of concrete damage,at last,looks on the damage course of concrete as imbalance changes in the view of synergetics,discusses the method of finding out the elastic terminal of concrete through analysis of stability,offers academic gist for improving concrete mechanic performance and the study of high performance concrete and have certain academic value and practice meaning.
2006, 23(1):24-28.
Abstract:This article carried on the simple analysis to the crack cause of the reinforced concrete bridges from the load,the contraction,the temperature stress and the construction factor and so on.
2006, 23(1):29-32.
Abstract:Based on the principle of finite element method on elastic foundation,using equivalent model of winkle beam on elastic foundation,a computing program has been programmed by turbo C.And modular simulation is adopted for simulating different factors to affect the excavation.The analysis is based on elasticity method.Considering its drawback,the deformation and the axils force are modified in the solving progress which is for simulation the affect by the deformation of the reforcing system.Combine with analysis of the excavation of the station of Neng-Jiang road,it is found that the result is coincided with the field testing value which shows the applicability of the method.And also,it could be referenced by the 3-D FEM analysis.
2006, 23(1):33-36.
Abstract:With the development of building technology and techniques,more and more new types of large-span roof structures comes out,they are light,flexible and colorful.Many new space structures are being developed by means of using new materials and technologies.And Shanghai South Railway Station being built is one of these new structures.But large-span structures have the characteristics of low gravity,large flexibility and low damp.Wind load is the key to structure design.Results are acquired by wind tunnel test on model of Shanghai South Railway Station,and analysis with the ANSYS,The tests results can be used as references for roof structure design,and the production of Shanghai South Railway Station built is being achieved.
2006, 23(1):37-39.
Abstract:In this paper,a new improved method,which considers concrete creep and nonlinear behavior of concrete,is proposed to study the limit corrosion penetration of degraded concrete members.Finite element numerical analyses in means of ANSYS are carried out.The study shows that there are two main factors affecting the limit corrosion penetration,the ratio of the thickness of concrete cover to the diameter of rebar and the concrete strength,and the limit corrosion penetration will increase as the ratio and concrete strength increase.
2006, 23(1):40-43.
Abstract:In this paper,the space beam gird model for a long-span rigi d-framed flexible CFST arch bridge in YiWan railway is established.Considering geometric and material nonlinear,the ultimate load capacity of CFST arch bridge at usage is analyzed.The results show that space beam gird model is a More reasonable method,which imitate initial disfigurement of structure better.
2006, 23(1):44-47.
Abstract:A slope locates at the right bank of a reservoir above highroad,its soil composed by weak sandstone and pulpy rock.The age-old slope is affected by the drape,zone of fracture and ground water.The rock of surface layer is airslaked,discharged and made weak.The slope will slide again.Through analysis the reinforcement of the high slope slide and its effect,the result shows that after reinforcement the slope incline to stability.
2006, 23(1):48-51.
Abstract:A new method for establishment of non-linear wheelset lateral vibration model is proposed by analysis of traditional model shortage.The paper shows relevant example and simulation result,Analyeses the hunting stability behaviors of the system including quasi-periodic solutions and chaos.
2006, 23(1):52-55.
Abstract:This article mainly introduced the development background and the application demand of the marshalling yard dispatcher production wireless transmission system,and emphatically indicated the system major component to pass on module date RiJing NISSEI ND250A with the RS232 communication agreement and methods, then specify VISUAL BASIC serial communication controller MSCOMM's attributes, method and events.Through the instance to control use the MSCOMM communication to carry on the RS232 serial communication,and the design method to carry on the detailed discussion,and finally realized it under the win2000/xp environment with PC to pass on the module with the RS232 serial communication control.
2006, 23(1):56-58.
Abstract:This paper discusses the application of gray model and operational research in distributing of Airport rail to landside traffic.First of all,we used GM(1,1)forecast the landside traffic volume of Beijing Capital International Airport.And,we obtained the number of passengers to airport by bus and taxi.Moreover,we applied queuing theory to analyze the distribution of airport rail to bus and taxi and gained the respective distributing rate and volume.Last,based on the Markov Chains,we forecasted the distributing trend and obtained the steady distributing rate.
2006, 23(1):59-62.
Abstract:Based on the principle of the slope plant protection and reaction way,with the help of the hydraulics and sediment corrosion theory and formula,calculation ways for the function effect of the slope plant protection are obtained,the canonical calculation way for the ability of the slope plant protection is inexistent.Through the mechanics calculation of the slope plant protection,as well as the defended corrosion capability under the plant protection by use of the sediment corrosion calculation,the function of plant protection is verified.Then the application of the slope plant protection is expanded further.
2006, 23(1):63-67.
Abstract:The article aimsto present itsinvestigation and analysis of the current situation of roadtraffic accident in Nan-changfrom2000 to 2003 and the main causes leading to the traffic accidents,the distribution of space-time and thetype of suchtraffic accidents by means of statistical analysis.Some road safety measures are suggestedto be put forwardbased onthe analysis of the characteristics andthe regularity of the actual traffic accidents ocurringin Nanchang.
2006, 23(1):68-71.
Abstract:A proportional integral(PI) control strategy is commonly used for constant current and extinction angle control in an HVDC system.A PI control strategy is based on a static design where the gains of a PI controller are fixed.Since the response of a HVDC plant dynamically changes with variations in the operating point,a PI controller's performance is far from optimal.The contribution of this paper is the presentation of the design of a Computational Intelligence based control scheme.Experimental results that compare the performance of the adaptive control and PI control schemes are also given.
2006, 23(1):72-74.
Abstract:This article researches on the intelligent algorithm,with which the mainframe of the ice storage central air-conditioning matches the cool storage according to changes in extraneous temperature.The optimal controlling strategy of the ice storage central air-conditioning gives operation expense of the whole day as the target function.It can minimize the operation expense of the whole day under some constraint conditions including meeting needs for user load and melting capacity of devices for storing ice.
2006, 23(1):75-77.
Abstract:The paper describes system structure and work's principle of On-line Bookstore System,introduces functions of system modules and design of the main web pages in details.Especially,system security,reliability,convenience,and data mining are studied and discussed concretely.
2006, 23(1):78-81.
Abstract:This paper Introduces the functions of the LNS DDE Server,and combining with the RSView32 configuration software,designed the LonWorks supervisory system.
2006, 23(1):82-86.
Abstract:We Expound a System Boom of Finance Charge,Advance concept of Safe Finance Charge System,Give Technical Function of Its Need Reaching,And Give a Example of Modern Software Engineering Method of How to Apply Real Item,Induce Key Problem of Touching and Solve Plan in developing
2006, 23(1):87-90.
Abstract:Digital watermarking technology is an important methods of copyright protection,it has gained wide applications in many areas,but it also has many problems needed to be solved,This paper has analysed these problems and give theirs research direction at the same time.
2006, 23(1):91-93.
Abstract:Effective digital image security is an increasing important issue in a networked environment.An overall analysis of the requirement of image security,which is met by security mechanisms and measures,is made.We especially review the digital image encryption techniques and the digital image watermarking techniques,and point out the remaining problems of the image security measures and propose some research directions and key issues in the field in future.
2006, 23(1):94-97.
Abstract:In order to solve the problems which exist in traditional application programme,the MVC model and Struts structure are put forward.It introduces the theories of MVC model and Struts structure,and descripts a platform which is based on MVC model and developed with the technologies of JSP,Servlet,JavaBean in Sun's J2EE architecture.It also analyzes the implement of Web MIS in detail.
2006, 23(1):98-101.
Abstract:Autocad is one of popular draw software in the world.In the course of using it,most of users often need some knowledges to aid design and produce lots of valuable knowledges.To satisfy the need of user at great extent,this article brings forward an effective method of realizing design knowledge management oriented Autocad by using VBA.Its' central theory is that menu run relevant VBA application to connect with design knowledge base.
2006, 23(1):102-105.
Abstract:A synthetical vehicles location and navigation system which integrated GPS global positioning system,GSM short information service system and GIS geography information system has been discussed in this paper.This system adopts the GPS/DRS localization way and communication between vehicles and control center is achieved through GSM network.Moreover,it realized the positioning,navigating and monitoring of vehicles using electronic map at the same time.This system has friendly man-machine interface and reliable performance and has certain social economic benefits.
2006, 23(1):106-108.
Abstract:The specified sub-audio frequency tones are used to identify and judge communitcation objects in the Railway Wireless Train Dispatchment system.It is not only efficient,but also safe and credible to design the circuit that produce and distinguish sub-audio frequency tones by utilizing the MX465 chip.The design principle and programme are discussed roundly in the paper.
2006, 23(1):109-112.
Abstract:给出了网上求职机器人的主要设计思想和设计流程,并对使用的关键技术进行了重点的介绍.
2006, 23(1):113-116.
Abstract:运用MATLAB对传统全波傅氏算法和2种改进算法进行仿真,通过对3种算法频谱图的比较分析,说明2种改进傅氏算法能够有效滤掉故障电流中衰减的直流分量,从而获得更为精确的基波和谐波的幅值.
2006, 23(1):117-120.
Abstract:It mainly introduces the design idea and design flows of the bot on Internet;it focuses on the key technologies used in the software.
2006, 23(1):121-124.
Abstract:This article make use of MATLAB to emulate traditional full-cycle Fourier algorithm and two kinds of improved Fourier algorithm,then analyze the spectrum picture of these algorithm.The result demonstrate that the improved Fourier algorithm can filter decaying DC component effectively.We can obtain the magnitude of fundamental wave and harmonic wave more accurate than traditional full-cycle Fourier algorithm.
2006, 23(1):125-128.
Abstract:The preference principles of EDCF in 802.11e based on Static-State,AIFS and the Backoff Algorithmare three Mechanisms are elaborated.EDCF guaranteeing to QoS(quality of service)of VoWLAN is confirmed theoretically.The performance of Audio,Video and data is compared through establishing Soft-Terminal simulation model in the IBSS of VoWLAN.The QoS performance parameters(Packet loss rate,Delay,Jitter) were discussed in different traffic loads.Simulation result shows that EDCF can provide the guarantee of QoS for VoWLAN
2006, 23(1):129-131.
Abstract:DeviceNet is a mainstream field bus in industrial automation.Its application has been broadening because of its good performance,high reliability,high efficiency and low cost.However,the research and development on DeviceNet in China is far behind the market request.This work focus on the development of DeviceNet communication interface for master devices.The interface drivers,the protocol application software which realize DeviceNet specification are successfully programmed.This thesis describes DeviceNet Specification with an emphasis on its communication protocol including message,device profile and predefined master/slave connection set,constitutes a technical requirement of a general DeviceNet communication interface for master device;and finally designs and realizes the communication interface.
2006, 23(1):132-133.
Abstract:Auto door control system based on CPLD and contributed motor controller MC33033 is present.CPLD is contribution to control the operation state of auto door and MC33033 is contribution to control the run forward or reverse and regulate the speed independently.This control system has advantage of simplicity,dependability and lower cost.The experimental result is provided in this paper.
2006, 23(1):134-136.
Abstract:The paper shows the membershipfunction of anti-resonance fuzzy subject andthe equation of fuzzyreliability,bycombining fuzzy probability and multi-degree-of-freedomanti-resonance theory and analyzing the anti-resonance fre-quencyrandomicity,the electromotor rotate speed randomicity and vibration spring asymmetry.The equation can helptoprove fuzzyreliability and design.Some examples are provided.
2006, 23(1):137-138.
Abstract:Let m=p~an.is odd.Perfect Number gcd(p,n)=1 then p~a is Euler Factor of odd perfect number m The following results have been proved:1)Suppose p mod 5=4 and p mod 7!=1,a=5 6k then p~a is not Euler factor 2) Suppose p mod 5=1 and p mod 7=6,p mod 3=2,a=9 10k then p~a is not Euler factor
2006, 23(1):139-142.
Abstract:证明了C4k∪Pn当n=k+2,2k+1,2k+2,2k+3,3k,3k+1时的优美性.
2006, 23(1):143-147.
Abstract:设G=(V1,V2;E)是一个二分图,满|V1|=|V2|=n sk+1足,其中s 4,k 1是两个正整数.定义G中不相邻两点的最小度和为σ2(G)=min{dG(u)+dG(v)∶u,v∈V(G),uv E(G)}.在这篇文章中,我们证明了如果σ2(G)2「(1-1s)n﹁+2,则G有一个2-因子包含k个长至少为2s的点不交的圈
2006, 23(1):148-149.
Abstract:使用矩阵分解技术,提出了混合进制广义Walsh函数的一种新的复制方法,设计了混合进制Walsh函数阵的两种快速算法.
2006, 23(1):150-152.
Abstract:研究了双半环上的同余关系,并利用其上的加法半群对双半环上的同余进行了刻画,得到了一些比较深刻的性质.
2006, 23(1):153-155.
Abstract:By using the techniques of matrix analysis,a new copy method of.generalized Walsh function for hybrid carry system is proposed and two fast algorithms are designed in the paper.
2006, 23(1):156-157.
Abstract:In this paper,some congruences on bi-semirings have been studied.The bi-semiring congruences are characterized by their additive semigroups.Some profound properties for the bi-semiring congrounce are obtained.
2006, 23(1):158-160.
Abstract:In this paper,we consider a discrete-time risk model.The formulas of ultimate ruin probability and Lundberg equality for this model are obtained.An example of one class of the premium received and the amounts of claims for three different exponential distributions is given.
2006, 23(1):161-163.
Abstract:We define the stability of stochastic differential equations with Markovian switching by means of KRW met-rics,furthermore,investigate the stationary stability through coupling methods
2006, 23(1):164-168.
Abstract:In this paper,the author use the method of Laplace transform to the differential equation system,which is M/M/1 queuing system satifies.So obtain the Laplace transform expression of the transient distribution P_n(t) of the length of M/M/1 queuing system.
2006, 23(1):169-172.
Abstract:Conductive Polyaniline was prepared by chemical oxidation using aniline as the starting material and hydrocarbon as the doping agent.Reaction temperature,oxidation concentration,pH value and FT-IR characterization are discussed.Emulsifier OP-10 is used to produce polyaniline emulsion.