简介：Areviewconcerningthemethodsofstudyinganddescribingwavegroupsispresentedinthispaper.Afteranalysing78fieldrecordscollectedintheShijiuPort,China,themeasuredparametersofwavegroupsandsomefactorsdescribingwavegroupnessandtheirvariationsaregiven.Moreover,theseresultsarecomparedwiththoseoftheory.

简介：In2011,Chanproposedanimageauthenticationmethodbyproducingtheparitycheckbitsfrompixelswhosebitshavebeenrearranged.Duetothisrearrangement,thevalueofthemost-significantbitofeachtamperedpixelcanbedeterminedaccordingtoitsparitycheckbits.Withthehelpofthemost-significantbitofthepixel,thepixelcanberecoveredbyselectingtwopossible(7,4)Hammingcodewords.However,ifthedistancebetweentwoHammingcodewordsiswithinacertainrange,incorrectselectionmayoccur.Chan'smethodaddedoneadditionalbittoindicatethecorrectone.Itistrivialthatthismaydegradethequalityoftheauthenticatedimage.Inthispaper,wegroupfourmost-significantbitsintodifferentgroupstoformamappingcodebookandthemappingcodebookisusedtoproduceauthenticationdatainsteadofthe(7,4)Hammingcodebook.Theexperimentalresultsshowthattheproposedmethodhasagreaterabilitytorecovertamperedareas.

简介：Theregioncompletenessofobjectdetectionisverycrucialtovideosurveillance,suchasthepedestrianandvehicleidentifications.However,manyconventionalobjectdetectionapproachescannotguaranteetheobjectregioncompletenessbecausetheobjectdetectioncanbeinfluencedbytheilluminationvariationsandclusteringbackgrounds.Inordertoovercomethisproblem,weproposetheiterativesuperpixelsgrouping(ISPG)methodtoextractthepreciseobjectboundaryandgeneratetheobjectregionwithhighcompletenessaftertheobjectdetection.First,byextendingthesuperpixelsegmentationmethod,theproposedISPGmethodcanimprovetheinaccuratesegmentationproblemandguaranteetheregioncompletenessontheobjectregions.Second,themultiresolutionsuperpixel-basedregioncompletenessenhancementmethodisproposedtoextracttheobjectregionwithhighprecisionandcompleteness.Thesimulationresultsshowthattheproposedmethodoutperformstheconventionalobjectdetectionmethodsintermsofobjectcompletenessevaluation.

简介：-Thehydrodynamiccoefficientsforeachoftwopilesandthreepilesinbothside-by-sidearrangementandtandemarrangementundertheactionofirregularwavesareexperimentallyinvestigated.ThesecoefficientsvarywiththeKCnumber,therelativepilespacing,thenumberofpilesandthepilelocation,andtheirrelationshipsarepresentedinthispaper.TheycanbeusedinMorisonEquationandotherequationstocalculatedirectlythein-linewaveforcesandthetransverseforcesoneachpileinarray.

简介：装载的风是为控制大跨度的房顶结构的设计的最重要的负担之一。相等的静态的风负担，能通常瞄准决定特定的回答，被结构的设计者广泛地使用。为对多反应适用的相等的静态的风负担的一个方法在这份报纸被建议。相应于特别山峰回答的一个修改loadresponse-关联(纵向冗余码校验)方法被介绍，并且类似算法实现了因为组反应被描述。算法的主要想法是二回答能被放进一个组如果一回答的价值接近另外的反应的，当结构受到瞄准另外的反应的相等的静态的风负担时。基于修改纵向冗余码校验，组织反应方法被提出到装载的构造等价物静电干扰风。这种技术能同时为一些组织回答复制山峰回答。验证它的计算精确性，方法被用于实际大跨度的房顶结构。计算结果看那在一样的组的回答的类似什么时候高，有高精确性的相等的静态的风负担和相等的静电干扰的合理大小弯屈分发能被完成。