祝贺《系统仿真学报》出版百期

宇宙运行须佐证，粒子变化叹无穹；理论开拓求诤友，科技发展觅知音；系统仿真辟幻境,大千世界显真容；为助百科穹奥秘,不遗余力探创新。系统仿真学科及其所研究的仿真系统,可为各门学科提供试验设备、环境和条件，特别是为那些庞大、复杂、危险环境的系统提供试验、研究、设计     

推广的三维L-系统及在树木模拟中的应用

L-系统是植物模拟的重要方法之一。然而用L-系统模拟既有弯曲又有扭曲的枝条,需要大量的产生式,并且很难提炼出这些产生式。通过把空间曲线理论同L-系统相结合,将L-系统的表示图形的字符联系了曲率函数和挠率函数,并且对L-系统中的字符进行了新的龟解释,得到了三维函数L-系统。使用三维函数L-系统绘制既有穹曲又有扭曲的枝奈的植物时,L-系统筒洁,参数解释自然,同时在编程时,容易控制枝条的长度．实验结果表明,通过调整函数L-系统中的曲率函数和挠率函数可以得到拓扑结构相同但形态差异较大的树。     

Introduction to the Problems of Relativistic and Absolute Space, Time, and Motion

Sincethe1905conceptionofthespecialtheoryofrelativity(STR)byAlbertEinstein,therehasbeennoothertheoryofphysicswhichhasbeenbothhailedasoneofthemostprofoundaccomplishmentsofthehumanmind(Planck,Lane,Langevin,Eddington,Pauli,deBroglie,Born,Heisenberg,Thirring,etal)anddismissedasexperimentallyunconfirmable,physicallyuntenable,andlogicallyunsound(Poincare,Rutherford,Lenard,Abraham,Soddy,Alfven,Nordenson,Dingle,Theimer,etal).TheSTRisatheory"relativetotheobserver",whichpredictsthephysicalstate…     

Determining Whether a Multivariate Hyperexponential Function is Algebraic

Let F=C（x1,x2,…,xe,xe＋1,…,xm）, where x1, x2,… , xe are differential variables, and xe＋1,…,xm are shift variables. We show that a hyperexponential function, which is algebraic over F,is of form g（x1, x2, …,xm）q（x1,x2,…,xe）^1/lwe＋1^xe＋1…wm^xm, where g∈ F, q ∈ C（x1,x2,…,xe）,t∈Z^＋ and we＋1,…,wm are roots of unity. Furthermore,we present an algorithm for determining whether a hyperexponential function is algebraic over F.     

A CLASS OF SINGULARLY PERTURBEDBOUNDARY VALUE PROBLEMS FOR NONLINEARDIFFERENTIAL SYSTEMS

Considerthesingularlyperturbednonlinearproblemfory=(y1,…,yn)oftheformwhereεisasmallpositiveparameter,f=(f1,…,fn),g=(g1,…gn),fi(x,y')≡fi(x,y'1,…,y'n),gi(x,y')≡gi(x,y'1,…,y'n),A=(A1,…,An),B=(B1,…,Bn).ManyauthorssuchasHowes[1],O'DonnelllZ],Lin[3],Mo[4--7]andothershavediscussedthisproblemundervarioussituationsusingthemethodofdifferentialinequalities.Thispaperconcernsaclassofboundaryvalueproblemsfornonlineardifferentialsystemsusingtheiterationmethodandthetheoryofdifferentialinequaliti…     

Research on Adjust Time of Premium

1.INTsoDUCTIONInfiercecomPetitionofaninsurancemarket,fortheekistenceanddevelopment,insurancecomPanyneededendtheiroperatingscopecontinuallyandimprovetheirservicesteadily.Atthesamethoe,theyalsoneedtomakereasonableandfavorablepremiuxntoimprovetheircomPctitionofinsurancemarkt.AtPreselit,insuranceindustryhasaconunondevelopmenttendency,namely,scopeofunderwriebecomesmoreandmoreeXtepeive,competitionofinsurancecompanybecomesmoeandmoefierce.ForthescraInbleofmarketsandekistence,insurancecompanyhave…     

2003 List of Referees

The following list acknowledges the contribution of referees who served for year 2003. The editorial staff and authors gratefully appreciate their time and effort in producing quality, timely reviews. ANANDALINGAM, G., Univ. of Pennsylvania, USA ARAUJO, RUI, Univ. of Coimbra, Portugal ARCELUS, F.J., Univ. of New Brunswick, Canada ARMSTRONG, DON, Univ. of South Australia, HIRAMATSU, AYAKO, Osaka Sangyo Univ., Japan HOU, YUMEI, Chinese Academy of Sci., China HSU, YEN-TSENG, National Taiwan Univ. of Sci. and Tech., Taiwan, China HU, BAO-GANG, Chinese Academy of Sci.,     

JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS Vol.16 2005 Index AUTHOR INDEX

An Ruoming,Jiang Xingwei,Song Zhengji.4-957Cai Xiushan,Han Zhengzhi.3-595Cen Xiaofeng,Wang Qingchao,Ma Xingrui.1-84Chen Chunlin,Chen Zonghai.3-611Chen Guanghua,Ma Shiwei,Qin Tinghao,et al.4-787Chen Liangzhou,Shi Wenkang,Du Feng.2-273Chen Xiaofang,Gui Weihua,Wang Yalin.2-411Chen Yibao,Zhong Yifang,Zhang Lei.3-670Cong Shuang,Zhang Dongjun.1-123Cui Xunxue,Gao Wei,Fang Hongyu.2-426Dai Fusheng,Song Lizhong.3-550Deng Xiaolong,Xie Jianying,Guo Weizhong.3-545Deng Zhipeng,Yang …     

An Empirical Analysis on the Relationship betweenExports and Economic Growth in China

1IntroductionThedebateontheroleofexportsintheeconomicgrowthofdevelopingcountrieshasshiftedaremarkablewayfromimportsubstitutiontowardsexport-ledgrowth(ELG)andincreasedopenness.Therehasbeenanumberofempiricalstudiesthathavedocumentedastrongandpositiverelationshipbetweenexportsandeconomicgrowth(see,forexample,Michaely,1977,Balassa,1985;Krueger,1990;Tyler,1981,ffem,1985;Chow,1987;Fosu,1990;KhanandSqib,1983;SinguptaandEspana,1994).Chinahasbeenpursuingeconoicreformandoper-doorpoliciessince1978,a…     

An Algorithm on Edge Partition

1　BackgroudWhenacarisinaccidentonroad,itmustbepulledawaytoavoidserioustrafficjamandnewaccidentshappening.Inoneroadnet,ifacarforcleaningbarsisaskedtogettotheplace,duringashortspanoftimedemanded,whereaccidenttookplace,howmanyclearbarsStationsshouldbesetup?andwhereshouldtheybe?Weresolvedtheproblemwiththemethodofgraph.Aroadnetcorrespondstoadefinitegraph,inwhichavertexdenotesanoriginoraterminusofaroad,anedgedenotesaroadandaweightofanedgedenotesalengthofaroad.Therefore,theabove-mentionedproblemcan…     

New Bezout Identity and Parameterizationof All Properly Stabilizing NormalControllers for Singular Systems

1IntroductionWeconsiderthefollowinglineartime-invariantsquaresillglllarsystem:wherexER",,ueR",yER'.ThematrixEmaybesingularwitllrallkE<7t.TOguarallteethatsystem(1.1)hasauniquesolution,wehereafterassumethatitisregular,l.e.,sEC,det(sE--A)gi0.whenE=I,system(1.1)isdegeneratedilltoanorlualone.Forsimplicity,(E,A,B,C,D)isusedtodellotesystem(1.1)and(A,B,C,D)isusedtodenotea11ormalsystem(In,A,B,C,D).TheInatrixDisoftentermeddirectcontrolfeedthrough(DCF).Inthelastseveralyears,considerableatte…     

Modeling and Control of Telerobotic Systemswith Time-delays

1IntroductionTheresearchofteleroboticsystems,ofteninvolvingcommunication,commandandcontrol,isbelongingtoanemergingkeyhi-technology.Spacerobot,underwaterrobot,internet-basedrobotaretypicalexamplesofsuchsystems.UPtonow)onaccountofthecomplexity,noefficientandsimplemethodcouldbefoundtoanalyzeanddesignsystems.Thekeydifficultiestodealwithsuchsystems:hierachicaJstructure,hybridvariables,commumicatiolibandwidthlimitations,telepresenceandtimedelays.Therefore,intelligentandrobustdesignsaretakenintocon…     

Subsequent Assessment about China HighwayConstruction Projects

1IntroductionSincethepracticeofreforms,China'shighwayconstruction,especiallytheexpressway,hasbeendevelopedveryrapidly.Bytheendof1996,thetotalmileageofexpresswaysinChinahadreached3422km,oneofthetencountrieswiththelongestmileageofthiskindofhighwayintheworld.Asaresultofitsgreatquantityoftransportation,highspeed,fartherradiationandgoodbenefits,theconstructionofexpresswayhasnotonlyimprovedChina'stransportationstructuresandservice,butalsopromotedthebetteringoftheindustrialstructuresandtheeconomicde…     

Multisensor image fusion algorithm using nonseparable wavelet frame transform

1.INTRODUCTION Withtherapidimprovementofsensortechnology,numerousmultisensordata,whichoftencontaincom plementaryandredundantinformationaboutthere gionsurveyed,areobtainedinmanyfieldssuchasre motesensing,medicalimaging,machinevisionand militaryapplications.Sensorfusionisincreasinglybe comingapromisingresearcharea.Itcanbedivided intosignal,pixel,feature,andsymbollevels.The papermainlyaddressestheproblemofpixellevelim agefusion.Throughcombiningregisteredimages generatedbydifferentimagingsyst…     

The Fourth International Conference on Electronic Business （ICEB2004）

Co-organizersTsinghua University, Beijing, ChinaThe National University of Singapore, SingaporeNational Chiao Tung University, Taiwan, ChinaThe Chinese University of Hong Kong, Hong Kong, China     

An On-Line Modeling Based Kalman Filtering Process for Time-Interval-Variable Sequences with Application to Astronomic Surveying

1 .INTRODUCTIONThedevelopmentofthetheoryandtechnologyfordiscretetimesequenceprocessingareonsuchapre condition[1～3] thatthesamplingtimeintervaloftheconsideredsignalsisconstant,though ,inmanycasessuchasastronomicalsurveying ,spacenavigation ,weatherservice ,andharshindustrialenvironment,somesamplesmaybelossbecauseoftheless ideaex perimentalconditions.Therefore,theactualsamplingtimeintervalsofthemeasuredtimesequencesarevariable.However,theinformationcontainedhereinisusefulforidentifyingthedy…     

双向搭便车时双渠道供应链定价与销售努力决策

考虑由制造商、网络零售商和实体零售商组成的双渠道供应链,在零售商之间存在价格竞争和双向搭便车的情形下,研究集成和分散供应链两种模式下最优定价和努力水平决策.研究发现,在集成供应链模式下,最优零售价格和销售努力水平只取决于努力成本,当努力成本低于某临界值时,网络和实体零售商都努力,否则,都不努力.在分散供应链中,努力水平与批发价格,努力成本以及搭便车系数有关:当努力成本过低与过高时,制造商设定同样的批发价格,零售商会分别选择同时努力和同时不努力,则努力水平和供应链利润与搭便车系数无关,否则,制造商实行批发价格歧视策略,且搭便车系数越大,价格歧视越明显,此时,随着搭便车系数的增大,制造商的利润减少,零售商的利润增大,供应链的利润增大.     

Neuro-Computing Applications in Security of Network Information Systems

1.INTRODUCTIONWiththerapiddevelopmentofinformationindustry,computinginformationsystemshaveenteredanewstage,fromearlymono-processorsystemsfileservicesystemsin70'sandclient/servicesystemsin80'stopresentrisingsystemsbasedonintranet.However,becauseofinformationfluidity,resourcesdistributivityandlinkingopennessinnetworksystems,itiseasyfortheinformationinsystemstosufferattacks.Inotherwords,thesecurityofsystemsisbecomingincreasinglyacute.Therefore,thesecurityofapplicationsystemsistakenmoreandmor…     

Chinese Academic Journal (CAJ-CD) International Version Start to be Published for Overseas

ChineseAcademicJournal(CAJ-CD)isaseriesofintegratedfulltextdatabaseofcurrentelectronicacademicjournalsinChina.ThesubjectareasofCAJ-CDarecoveragehumallities,socialscience,naturalscience,engineering,agriculture,medicine,technology,andsoon.AllthosejournalsreflecttheprogressesandthemostrecentdynamicdevelopinginformationillChineseacademicresearches.TheCAJ-CDhasselectedfinely3000keyandspecializedjournalsfrom8000periodicalspublishedinChineselibrarysocietyforprovidingmassiveacademicinformation…     

Classical Theory of Advance of Perihelion of Mercury with Velocity Dependent Inertial and Gravitational Masses

ThefascinationexertedonmanybrilliantphysicistsofourtimebyEinstein,stheoryofgeneralrelativityiscausedmainlybytworeasons:l)ThetheoryisabletoexplainthesecularmotionofMercury,sperihelionandgivesforitavalueof43.2"perhundredyears,whichisinsplendidaccordancewiththecorrespondingvalueascertainedbytheastronomers.2)ThetheoryPredictsadeflectionofstarlightbytheSun,givingadeviationofaboutl.72"fromthestraightline,whichisobserved,too.Furthermore,thereexistsuntilnownoothertheory,whichcanexplainthesetwoeffect…