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简介：Agenetic-optimizationframeworkbasedonthepartialcooperationcommunicationprotocolisproposedforscalablevideocoding(SVC)streamtransmissionundermulti-relayamplifyandforwardcooperativenetworks.Unliketraditionalcooperativetransmissionschemes,thetransmissionmodeforeachcodedunitinthisnewprotocolcanbeswitchedflexiblybetweendirecttransmissionandcooperativetransmission.Obviously,underthisprotocol,thebandwidthefficiencyandtransmissionrobustnesscanbebalancedadaptivelyaccordingtotheprioritylevelofcodedunitsandwirelesschannelfadingcharacteristics.Basedonthis,awell-knowngeneticoptimizationalgorithm-differentialevolutionisexploitedheretofindthejointlyoptimaltransmissionmodes,powerallocationandunequalerrorprotection(UEP)channelcodingstrategiestominimizetheendtoendreconstructedvideodistortion.Extensivesimulationresultsshowthat,comparedwithclassicaloptimalcooperativeUEPtransmissionschemes,theproposedoptimizedtransmissionframeworkbasedonthepartialcooperativeprotocolcanbringsignificantpeak-signal-to-noise-ratio(PSNR)gainsforthereconstructedvideoinavarietyofchannelbandwidth,powerbudgetandtestsequences.

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简介：Thispaperstudiesadynamicmean-varianceportfolioselectionproblemwithrandomliabilityintheaffineinterestrateenvironment,wherethefinancialmarketconsistsofthreeassets:onerisk-freeasset,oneriskyassetandonezero-couponbond.AssumethatshortrateisdrivenbyaffineinterestratemodelandliabilityprocessisdescribedbythedriftedBrownianmotion,inaddition,stockpricedynamicsisaffectedbyinterestratedynamics.Theinvestorsexpecttolookforanoptimalstrategytominimizethevarianceoftheterminalsurplusforagivenexpectedterminalsurplus.TheefficientstrategyandtheefficientfrontierareexplicitlyobtainedbyapplyingdynamicprogrammingprincipleandLagrangedualitytheorem.Anumericalexampleisgiventoillustrateourresultsandsomeeconomicimplicationsareanalyzed.

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简介：一家全球企业必须连续地改进在供应链合作者之间的逻辑操作的效率。在供应链集成逻辑服务，资源，和必要信息流动保证效率和功效对这些公司极其重要。全球逻辑服务公司从他们的顾客面对挑战提供合算的逻辑服务，精确，并且无缝地集成材料，信息和现金流动。在这研究，为包罗一切的逻辑服务的一个改进框架系统地被设计，分析，并且评估。包罗一切的逻辑服务框架，在四定义模型，被开发在全球供应链上下文以内向企业提供综合、全面的服务。服务重要性的层次用四张范畴问询表被估计。这研究在分发工业提供包罗一切的逻辑服务的实现的案例研究并且表明在不同需求条件下面操作的框架。最后，系统动力学原因的评估被用来评估逻辑服务框架的优点。

简介：BasedonthedevelopingtendencyofpresentChina'sbasicGIS,thispaperdiscussesthedesigningideaforscalesof1∶10000,1∶50000,1∶250000and1∶1000000pyramidlikemultilayerandmultiresolutionofthebasicGIS.AtechnicallinefortheconstructionofbasicGISofthewholecountryandvariousprovincesforsustainabledevelopmentisputforward.AndsomeimportanttheoreticalGISissuestouchedbythetechnicalprocessarediscussed.

简介：Background:Attentionhasrecentlybeendrawntotheissueoftransboundaryinvasions,wherespeciesintroducedandnaturalizedinonecountrycrossinternationalbordersandbecomeproblematicinneighbouringcountries.Robustmodellingframeworks,abletoidentifytheenvironmentaldriversofinvasionandforecastthecurrentandfuturepotentialdistributionofinvasivespecies,areneededtostudyandmanageinvasions.Limitationsduetothelackofspeciesdistributionandenvironmentaldata,orassumptionsofmodellingtools,oftenconstrainthereliabilityofmodelpredictions.Methods:Wepresentamultiscalespatialmodellingframeworkfortransboundaryinvasions,incorporatingrobustmodellingframeworks(MultimodelInferenceandEnsembleModelling)toovercomesomeofthelimitations.TheframeworkisillustratedusingHakeasericeaSchrad.(Proteaceae),ashruborsmalltreenativetoAustraliaandinvasiveinseveralregionsoftheworld,includingtheIberianPeninsula.Twostudyscaleswereconsidered:regionalscale(westernIberia,includingmainlandPortugalandGalicia)andlocalscale(northwestPortugal).Attheregionalscale,therelativeimportanceofenvironmentalpredictorssetswasevaluatedandrankedtodeterminethemaingeneraldriversforthespeciesdistribution,whiletheimportanceofeachenvironmentalpredictorwasassessedatthelocalscale.ThepotentialdistributionofH.sericeawasspatiallyprojectedforbothscaleareas.Results:ModelprojectionsforwesternIberiasuggestthatalargeareaisenvironmentallysuitableinbothPortugalandSpain.Climateandlandscapecompositionsetswerethemostimportantdeterminantsofthisregionaldistributionofthespecies.Conversely,ageologicalpredictor(schistlithology)wasmoreimportantinexplainingitslocal-scaledistribution.Conclusions:AfterbeingintroducedtoPortugal,H.sericeahasbecomeatransboundaryinvaderbyexpandinginpartsofGalicia(Spain).ThefactthatalargerareaispredictedasenvironmentallysuitableinSpainraisesconcern

简介：Restoringdegradedforestsandagriculturallandshasbecomeaglobalconservationpriority.Agrowingnumberoftoolscanquantifyecosystemservicetradeoffsassociatedwithforestrestoration.Thisevolving'toolslandscape'presentsadilemma:moretoolsareavailable,butselectingappropriatetoolshasbecomemorechallenging.WepresentaRestorationEcosystemServiceToolSelector(RESTS)frameworkthatdescribeskeycharacteristicsof13ecosystemserviceassessmenttools.Analystsenterinformationabouttheirdecisioncontext,servicestobeanalyzed,anddesiredoutputs.Toolsarefilteredandpresentedbasedonfiveevaluativecriteria:scalability,cost,timerequirements,handlingofuncertainty,andapplicabilitytobenefit-costanalysis.RESTSusesaspreadsheetinterfacebutaweb-basedinterfaceisplanned.Giventherapidevolutionofecosystemservicesscience,RESTSprovidesanadaptableframeworktoguideforestrestorationdecisionmakerstowardtoolsthatcanhelpquantifyecosystemservicesinsupportofrestoration.

简介：Asteadyincreaseinconsumerdemands,andsevereconstraintsfrombothasomewhatdamagedenvironmentandnewlyinstalledgovernmentpolicies,requiretoday'sproductdesignanddevelopmenttobefasterandmoreefficientthaneverbefore,yetutilizingevenfewerresources.Newholisticapproaches,suchastotalproductlifecyclemodelingwhichembracesallaspectsofaproduct'slifecycle,arecurrentattemptstosolvetheseproblems.Withinthefieldofproductdesignandmodeling,featuretechnologyhasprovedtobeoneverypromisingsolutioncomponent.Owingtothetremendousincreaseininformationtechnology,totransferfromlowleveldataprocessingtowardsknowledgemodelingandinformationprocessingisabouttobringachangeinalmosteverycomputerizedapplication.Fromthisviewpoint,currentproblemsofbothfeatureframeworksandfeaturesystemsareanalyzedinrespecttostaticanddynamicconsistencybreakdowns.Theanalysisrangesfromearlystagesofdesigning(feature)conceptstofinalsystemimplementationandapplication.Forthefirsttime,anintegratedviewisgivenonapproaches,solutionsandpracticalexperience,withfeatureconceptsandstructures,providingbothafeatureframeworkanditsimplementationwithsufficientsystemarchitectureandcomputationalpowertomasterafairnumberofknownconsistencybreakdowns,whileprovidingforrobustcontextsforfeaturesemanticsandintegratedmodels.Withintoday'sheavyuseofinformationtechnologythesearepre-requisitesifthefullpotentialoffeaturetechnologyistobesuccessfullytranslatedintopractice.

简介：Humancivilizationiscurrentlyundergoinganotherimportantturn.Followingtheeconomicglobalization,culturalglobalizationhasbecomeaninevitabletrend.TraditionalChristiancivilizationandIslamiccivilizationinsistmonotheismanduniversalism.

简介：TheTriassicLowerKaramayFormation(T2k1)isoneofthemainoil-bearingstratigraphicunitsinthenorthwesternmarginofJunggarBasin(NWJunggar),China.Basedonanintegratedinvestigationofoutcrops,welllogsandseismicdataofNWJunggar,theLowerKaramayFormationissubdividedinto2sets,6bedsand13layers.Also,itisconsideredthatthealluvialfan,thebraidedriver,themeanderingriverandtheshore-shallowlacustrineweredevelopedduringtheearlyperiodofMiddleTriassicinKaramaydistrictsⅠ,Ⅲ.TheLowerKaramayFormationdepositsthefollowing9sedimentarysubfacies:thelowerfan,themiddlefan,theupperfan,thebraidedchannel,theoverflowbank,theriverfloodofbraidedriver,themeanderingchannel,theriverfloodofmeanderingriver,theshore-shallowlacustrine.Seventeenmicrofaciessuchasthebraidedstreamchannel,thealluvialsandfloodplain,thealluvialglutenitefloodplain,thewaterchannel,thechannelbaretc.havebeenidentifiedinsubfaciesaswell.Thethicknessofstrataisfirstlyup-thinningandthenthickeningupwardtothetop,itisaprocessfromlarge-scalelacustrinetransgressiontopartlylacustrineregression.Furthermore,themicrofaciesplanardistributinglawprovesthattheremainingoilmayenrichalongthemarginofmicrofaciesbecauseoftheplanarmicrofacieschanges.Therefore,thisresearchisbeneficialforsearchingremainingoilinNWJunggarandprovidinginformationtotheproject"TheSecondaryExploration"ofPetroChina.

简介：在在中间之间的过渡时期并且晚三叠纪，印度支那造山运动在华南引起了二构造事件：(1)形成并且沿着华南板的北边缘Qinling-Dabieorogenic带高举，由于它有北方中国板的碰撞；并且2)在华南板的东南的部分的1300-km-wideintra大陆人orogen的发展，它导致了低岬戳褶层地区的一个向西北的运动。这些构造事件结果Yangtze站台的intheending，并且是从Eidacaran的一个稳定的paleogeographic因素到中间的目的三叠纪。这个平台被浅水的碳酸盐的普遍发展描绘。在Yangtze站台的结束以后，上面的Yangtze低岬盆(或四川低岬盆)被形成在期间晚三叠纪并且成为了由Xujiahe形成的相关阶层构成的河的存款的一个累积地点。在西方的四川省，Xujiahe形成躺形成浅水的碳酸盐Xiaotangzi形成siliciclastic岩石摇的Maantang(从架页岩到沿岸的外形)。sequence-stratigraphic框架上面在上面的Yangtze低岬盆三叠纪显示特别冲积体系结构，由创作的序列描绘了(1)高住所的阶段的低精力的河的存款的继任包括煤缝接，并且(2)低住所的阶段的高精力的河的存款，包括混合河隧道沙岩。属于Xujiahe形成和它的相对阶层的这些河的存款的空间分发被渐渐的变瘦外面描绘，重叠，并且向东方和南方的拧外面。这个沉积记录因此在低岬盆的充满的继任以内表示河的存款的特别sequence-stratigraphic继任。sequence-stratigraphic框架为上面在上面的Yangtze区域三叠纪提供Yangtze站台和上面的Yangtze低岬盆的形成的结束的一个记录。

简介：为自我类似的集合的Hausdorff措施的计算的一个理论框架令人满意的振荡被建立了。

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简介：通过使用动态程序集加载和反射，托竹代码提供了通过外接程序轻松扩展直用程序的方法。但是，当允许应用程序通过外接程序模型运行任意代码时，就将用户计算机暴露在潜住的未知代码之下，有很大风险，恶意代码可能会使用您的应用程序作为进入用户数据的入口点。可以采用若干方法缩小应用程序的攻击面，防止恶意代码或不稳定代码破坏用户计算机——戒者防止敏感数据被窃取。

简介：Microsoft．NETFramework中的安全性包含许多技术；基类库（BCL，BaseClassLibrary）和ASP．NET中基于角色的安全、BCL中的密码系统类以及新的对使用访问控制列表（ACL，AccessControlList）的支持即为其中的少数几个例子。公共语言运行库（CLR，CommonLanguageRuntime）提供的．NET安全性系列中的技术之一就是代码访问安全性（CAS，CodeAccessSecurity）。本文讨论．NET安全性中CAS的角色以及．NETFramework2．0的CAS中的一些关键的新功能和更改。

简介：Chinaisoneofthelargestcountriesintheworldintermsofplantedforestsarea.Plantedforestsplayanimportantroleinsoilandwaterconservation,foodsource,timbersupplyandenergysecurity,buttherearestillmanyproblemswaitingforimmediateresolution.BasedonthecurrentdevelopmentstatusofplantedforestinChina,thepapermadeancomprehensiveanalysisforthepositiveimpactandexistingproblemswithregardtoplantedforests,andthencameupwithpolicyrecommendationsforprom...