Optimal portfolio rules with habit formation and preference for wealth

0　IntroductionWhenthepricesofriskyassetssatisfythegeometricBrow nianmotionandtheinvestor’sutilityfunctionisamem beroftheHARAfamily ,Mertoncompletelysolvedtheconsump tionportfolioproblem [1 2 ] .Buttheequitypremium puzzle[3] andtherisklessinterestratepuzzle[4] meanthatthesimpleHARAfamilyu tilityfunctioncannotdescribetheinvestor’scomplexbehavior,sotheutilityfunctionhastobeextendedtomoregeneralcase.Zoufirstintroducesthepreferenceforwealthbylettingthewealthasanargumentofutilityfunction[5] …     

B^3A： Prompting Cooperation Among Rational Participants in P2P Bulk File Sharing Environments

Introduction Peer-to-peer (P2P) file sharing systems, such as Ka- ZaA[1] , Gnutella[2] , eMule[3] , eDonkey[4] , and Bit Tor- rent (B.T.)[5] , have been becoming more and more popular nowadays. Such systems’ success greatly relies on each participant’s …     

Dynamic allocation strategy based on pre-allocation and agent to implement Ada95's distributed computing

0　IntroductionFortheimplementofdistributedcomputingofAda95 ,wemadetheresearchoncurrencyofAdaprogram ,themodelofdistributingofcomputingandthesafetyofdistributedcomputingofAda95 [1 ] .Wealsodevelopedapre allocationstrategyfordistribut edcomputingofAda95 [2 ] .Foritisunavoidablethatsomedynamictasksoccurindistributedcomputing[3] ,wemusthaveastrategytodealwithit.So ,wefurthermadetheresearchofdynamicallocationstrategythatbasedonAgent.WetrytouseAgentinAda95’sdis tributingcomputing.Thekeytechnol…     

Asymptotic behavior of the shock solution for a class of nonlinear equations

Recently thenonlinearsingularly perturbedproblemhasbeeninvestigatedintheinternationala cademiccircles[1] .Approximationmethodshavebeendevelopedandrefined ,includingthemethodofaver aging ,boundarylayermethod ,matchedasymptoticexpansion ,andmultiplescales .ManyscholarssuchasO’MalleyJr .[2 ] ,Boh啨[3] ,Butuzovetal.[4 ] ,Kel ley[5] ,andMizoguchietal.[6 ] havedoneagreatdealofwork .UsingthemethodofdifferentialinequalityandothersMoconsideredalsoaclassofsingularlyperturbednonlinearboundaryvaluepro…     

The symmetric solutions of affiliated value model

0　IntroductionIntheprocessofR&Ditem ,thereisusuallycompetition .ManyfirmswanttoinvestR&Dtoobtainapatent.Lury[1 ] gaveanequilibriuminvestmentundertheconditionofone timeinvestmentandcontinuousinvestmentwhenthepayoffwasafixedprize.Ref.[2 ]analyzedtheeffectofinformationsharinginR&D .TherearemanyliteraturesaboutanalysisofR&DlevelswhenfirmscompeteinoutputmarketafterR&Dsucceeds[3 ,4] .Additionally ,todecideinvestmentlevel,therearemanyliteraturesaboutR&Ditem’spricing .MondherBellalah[5] ,K .…     

The Redundant Arm Self-motion Control Based on Self-tuning Fuzzy PID Controller

0　IntroductionUsingaconventionalPIDcontroller,itisdifficulttoachieveadesiredtrajectory trackingprecisionbecauseofrobot’snonlinearity ,jointcouplingandtimevariablespe ciality[1] .Hence ,manycontroltechnologieswereat temptedtosolvethesesproblems ,typicallyadaptivecon trol,optimizationcontrol,neuralnetworkcontrol,andslidingmodevariablestructurecontrol[2 ] .Eversince 2 0yearsago ,FLChasbeenusedwidelywithobviousprogressincontrolfields ,especiallyinrobotics[3] .ItisprovedthatFLCisverysuitablef…     

The Fabrication and Properties of a Blue Long Afterglow Phosphor

1Introduction　SincethefindingoflongafterglowphosphorofZnS :Cuintheearly 2 0thcentury[1] ,greatdevelopmentshavebeenob tainedinthetraditionalsulfideslongafterglowluminescentmaterials.Butitspoorchemicalstability ,lowbrightnessandshortafterglowtimecan’tmeettherequirementsofapplica tion .In 1992 ,aluminatessystem[2 ] materialsdopedwithvariousrareearthionswerefoundtohavepropertiesoflongafterglow .Itsafterglowbrightnessisover 10timesofthetra ditionalsulfidesystemmaterials,buttherearesomeshortages…     

Effect of Nano Red Elemental Selenium on GPx Activity of Broiler Chick Kidney Cells in vitro

0　IntroductionSelenium(Se)isanessentialtraceele mentwithaverynarrowmarginbe tweennutrientlevelsofintakeandtoxicity .Anti oxidationisthemostimportanteffectofSe’sbiologicalfunction .Seisanessentialcomponentandactivesiteofcellularglu tathioneperoxidase (GPx) [1 ] .GPxistheoneofmainanti oxidizingenzymes,clearingdeleteriousperoxides,suchasH2 O2 ,fattyacidperoxide,phospholipidhydroperoxide,andsoon[2 4] ,toprotectbiologicalmem braneandbiologicalbigmoleculefromoxida tivedamageintissues[5 \〗.It…     

Stratigraphic architecture of the Neoproterozoic glacial rocks in the “Xiang-Qian-Gui” region of the central Yangtze Block, South China

Recently ,theinterestinglowlatitudeandlowaltitudeSnowballEarthhypothesis[1,2 ] iswidelyreco gnized ,and greatlystimulatingthestudyoftheNeoproterozoicglaciations ,whichmaybecloselyre latedtothewell knownEarlyCambrianbio radiationevent.By 1980 ,theNeoproterozoicglaciationinSouthChinaisbelievedtobedividedintotwoglaciationsandoneinterglaciation[3～ 5] ,namely ,theearlyChang’anGlaciation ,lateNantuoGlaciationandFu luInterglaciation .However ,thereweredifferentwaysofcorrelation ,themostobvious…     

Description of mechanism function about dehydration of cobalt oxalate dihydrate by multiple rates isotemperature method

0　IntroductionThetechnologyofthermalanalysishasbeenwidelyusedinthestudyofthermalbehaviorandthermalcharacterofsolidstatereaction ,theprimaryintentionofthermalanalysiskineticsistoestablishseparatevaluesofapparentactivationenergyE ,themostprobablemechanism g(α)andthepre exponentialfactorA ,meanwhilethedeterminationofg(α)hasgraduallybeenthefocusofthisfield .Inthisfield ,therearemostlygeneralkineticsmethodsused presently ,suchasCoats Redfern’s[1 ] integralmethod ,Achar’s[2 \〗differentialmet…     

Observation and hydrodynamic analysis of fast-start of yellow catfish (Pelteobagrus fulvidraco)

Afast startisahigh energyswimmingburststartingeitherfromrestorfromsteadyswimming[1] .Thefast startsareclassifiedintotwomaintypes ,C startandS start ,inwhichthefishbodyisbentintoa‘C’or‘S’shapeattheendofthefirstcontractionofthelateralmusculature .Fast startsareimportantformostfishinescapingpredatorsandachieving preycapture .Afast startprocesshastwoamazingcharac teristics.Oneistheturningmaneuver .Theturningmaneuveriscarriedoutveryrapidly ,withtheturningdiameterbeingequalto ,orevenlessthanth…     

一类字典积Cn[H]的星全染色

简单图G和H的字典积G[H]是指具有顶点集V(G)×V(H)的简单图G[H],其顶点(u,v)和另一个顶点(u’,v’)相邻当且仅当uu’∈E(G),或者u=u’且vv’∈E(H).研究了n阶圈Cn与m阶简单图H的字典积Cn[H]的星全染色,得到了圈与某些特殊图的字典积的星全色数.     

Synthesis of Calix[4] arene Thia Derivative and Extraction Effect of Substituents on Mercury( Ⅱ) and Lead( Ⅱ)

Calix[4]arene derivatives have been reported to possess high selectivity for metal ions.In order to analyze the extraction effect of substituents on Hg~(2+)and Pb~(2+),calix[4]arene derivatives containing hydroxyl,bromoethoxy and 1,11-dioxa-4,8-dithiahendecene were successfully synthesized,with their extraction effectiveness towards Hg~(2+)and Pb~(2+)were evaluated respectively.The results indicated that the phenolic hydroxyl in calix[4]arene improved the extraction ability on Hg~(2+)by promoting the formation of the negative oxygen ions that could bind with Hg~(2+)by coordination and ionic bonds.The extraction ability of 5,17-dinitro-26,28-(1’,11’-dioxa-4’,8’-dithiahendecene)-calix[4]arene(calix[4]arene thia derivative)was improved slightly due to the better coordination capacity for metal ions after introduction of 1,11-dioxa-4,8-dithiahendecene,which was a chelate-binding centre.Regarding to Pb~(2+),only 1,11-dioxa-4,8-dithiahendecene on molecule contributed to extraction due to the coordination bond.Since the metal ion with higher charge-to-radius ratio could coordinate with one ligand more stably,Pb~(2+)with higher charge-to-radius ratio than Hg~(2+)was coordinated and extracted by the calix[4]arene thia derivative more easily.Furthermore,extraction rates of the calix[4]arene thia derivative on both ions(Hg~(2+)and Pb~(2+))increased with the increase of pH value in acidic aqueous system(pH7).     

Fries重排合成杯[4]芳烃四己酮的方法改进

以25,26,27,28-四羟基杯[4]芳烃和正己酰氯为原料,‘一锅法’直接合成5,11,17,23-四己酰基-25,26,27,28-四羟基杯[4]芳烃（杯[4]芳烃四己酮）.通过正交实验优化合成条件,使杯[4]芳烃四己酮产率达到86.7%;对反应机理研究的结果表明反应经两步完成,先经过O-酰基化,然后再发生Fries重排.     

Management Communication in University’s Digital Library

IntroductionAmericanfuturologistNaisbitthadsaid :“Futurecompetitionisthecompetitionofmanagement,thefocusofwhichistheeffectivepersonnelcommunicationandcross organizationalcommunication.”[1]Communicationisthetransferringprocessofinformation ,knowledgeandemotionamongindividualsandgroups,throughwhichaf fectothers’attitudesandfeelings,andeventuallyaffecttheirbehaviors.Forknowledgehasbeentheprimacyele ment,managementcommunicationinknowledgeeconomicagesismoreimportantthananyotherepoch ,whosestyle…     

A hybrid Jacobian control for uncalibrated robot visual servoing

Visualservocontrolhasbeenanactiveareaofre searchformanyyears.Since1973,therehasbeen significantprogressonvisualservoingcontrol[1],and severalspecialissuesonvisualservoinghavebeen published[2,3].Therearetwobasicapproachestovi sualservocontrol[1]:Position BasedVisualServoing(PBVS)andImage BasedVisualServoing(IBVS).InPBVSsystem,theobject’s3Dposeisrecovered throughcomputervisionandtheerrorbetweenthe currentposeandthedesiredposeiscomputedinthe Cartesiantaskspace.Estimationof3Dmotionsfrom…     

Application of support vector machines regression in prediction Shanghai stock composite index

0　IntroductionNeuralnetworks,inrecentyears,havebeensuccessfullyusedformodelingfinancialtimeseries.Researchesrevealneuralnetworkshavebetterresultsindescribingdynamiccharac teristicscomparingwithclassicalstatisticalmethods[1 3] .Back propagation (BP)neuralnetworkisamostpopularlyusedneuralnetworkmodelintheareaoffinancialforecasting .AlthoughBP’sstructureissimple ,ithaspowerfulabilityinsolvingvariousproblems.TherearealsoshortcomingswithBP :needsformanycontrolparameters,difficultyingettingsta…     

烷基桥联双苯并咪唑化合物的合成与表征

在氢化钠存在下,用苯并咪唑与1-溴代烷烃反应生成1-烷基苯并咪唑,然后再与1,6-二碘己烷反应制得双苯并咪唑盐[1,6-二(1’-乙基-3’-苯并咪唑)己烷]二碘化物(Ⅰ)和[1,6-二(1’-正丁基-3’-苯并咪唑)己烷]二碘化物(Ⅱ).化合物Ⅰ和Ⅱ分别与不同比例的Hg I2反应得到阴离子配合物[1,6-二(1’-乙基-3’-苯并咪唑)己烷]四碘合汞酸盐(Ⅲ)和[1,6-二(1’-正丁基-3’-苯并咪唑)己烷]六碘合二汞酸盐(Ⅳ).化合物Ⅲ和Ⅳ的晶体结构通过X-线单晶衍射分析、~1H NMR和~(13)C NMR得到确认.在化合物Ⅲ和Ⅳ的阳离子单元中,每个阳离子上的2个苯并咪唑环形成的二面角分别为70.2(1)°和0°.在化合物Ⅲ的阴离子单元[HgI_4]~(2-)中,汞(Ⅱ)离子与4个碘离子配位形成四面体构型.在化合物Ⅳ的阴离子单元[Hg_2I_6]~(2-)中,2个汞(Ⅱ)离子和2个桥碘离子形成一个平面的四边形结构,另外4个碘离子位于四边形的两侧.在化合物Ⅲ和Ⅳ的晶体堆积中,其二维超分子层和三维超分子建筑是通过分子间弱相互作用形成的(包括C——H···I氢键、I···π作用和π-π作用).对化合物Ⅰ~Ⅳ的荧光特性的研究表明,Ⅰ和Ⅱ中加入汞离子后并未导致配合物Ⅲ和Ⅳ中产生重原子效应.     

Reply to: Parker A. Comment on “Low-frequency sea level variation and its correlation with climate events in the Pacific”

First, we would like to thank Parker for his discussion and comments on our work. Parker’s main concern [1] is that the sea level is oscillating with important multi-decadal periodicities but absolutely not positively accelerating. He also argued that the global mean sea level (GMSL) acceleration computed by Jin et al. [2] seemed too large. His similar     

Thin films of porphyrinperylene molecular array fabricated by electrophoresis methodology

Porphyrin-perylene dyad molecular arrays are impor-tant building blocks for mimic photosynthetic systems and molecular opto-electronics such as molecular wires, logic gates and molecular switches. In recent years, Wasielewski’s group[1―3] and Bocian and Lindsey’s group[4―7] have systematically investigated the electronic structure, the mechanism of transient photoinduced charge and/or energy transfer in a few representative porphyrin- perylene arrays, the acquired results threw light on th…