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簡介:WORLDJOURNALOFCOMPUTERAPPLICATIONANDTECHNOLOGY124150,2013HTTP//WWWHRPUBORGDOI1013189/WJCAT2013010204FACERECOGNITIONTECHNIQUESASURVEYVVIJAYAKUMARIDEPARTMENTOFELECTRONICSANDCOMMUNICATION,SRIKRISHNACOLLEGEOFTECHNOLOGY,COIMBATORE,INDIACORRESPONDINGAUTHOREBINVIJIREDIFFMAILCOMCOPYRIGHT?2013HORIZONRESEARCHPUBLISHINGALLRIGHTSRESERVEDABSTRACTFACEISTHEINDEXOFMINDITISACOMPLEXMULTIDIMENSIONALSTRUCTUREANDNEEDSAGOODCOMPUTINGTECHNIQUEFORRECOGNITIONWHILEUSINGAUTOMATICSYSTEMFORFACERECOGNITION,COMPUTERSAREEASILYCONFUSEDBYCHANGESINILLUMINATION,VARIATIONINPOSESANDCHANGEINANGLESOFFACESANUMEROUSTECHNIQUESAREBEINGUSEDFORSECURITYANDAUTHENTICATIONPURPOSESWHICHINCLUDESAREASINDETECTIVEAGENCIESANDMILITARYPURPOSETHESESURVEYSGIVETHEEXISTINGMETHODSINAUTOMATICFACERECOGNITIONANDFORMULATETHEWAYTOSTILLINCREASETHEPERFORMANCEKEYWORDSFACERECOGNITION,ILLUMINATION,AUTHENTICATION,SECURITY1INTRODUCTIONDEVELOPEDINTHE1960S,THEFIRSTSEMIAUTOMATEDSYSTEMFORFACERECOGNITIONREQUIREDTHEADMINISTRATORTOLOCATEFEATURESSUCHASEYES,EARS,NOSE,ANDMOUTHONTHEPHOTOGRAPHSBEFOREITCALCULATEDDISTANCESANDRATIOSTOACOMMONREFERENCEPOINT,WHICHWERETHENCOMPAREDTOREFERENCEDATAINTHE1970S,GOLDSTEIN,ARMON,ANDLESKUSED21SPECIFICSUBJECTIVEMARKERSSUCHASHAIRCOLORANDLIPTHICKNESSTOAUTOMATETHERECOGNITIONTHEPROBLEMWITHBOTHOFTHESEEARLYSOLUTIONSWASTHATTHEMEASUREMENTSANDLOCATIONSWEREMANUALLYCOMPUTEDTHEFACERECOGNITIONPROBLEMCANBEDIVIDEDINTOTWOMAINSTAGESFACEVERIFICATIONORAUTHENTICATION,ANDFACEIDENTIFICATIONORRECOGNITIONTHEDETECTIONSTAGEISTHEFIRSTSTAGEITINCLUDESIDENTIFYINGANDLOCATINGAFACEINANIMAGETHERECOGNITIONSTAGEISTHESECONDSTAGEITINCLUDESFEATUREEXTRACTION,WHEREIMPORTANTINFORMATIONFORTHEDISCRIMINATIONISSAVEDANDTHEMATCHINGWHERETHERECOGNITIONRESULTISGIVENAIDOFAFACEDATABASE2METHODS21GEOMETRICFEATUREBASEDMETHODSTHEGEOMETRICFEATUREBASEDAPPROACHESARETHEEARLIESTAPPROACHESTOFACERECOGNITIONANDDETECTION1INTHESESYSTEMS,THESIGNIFICANTFACIALFEATURESAREDETECTEDANDTHEDISTANCESAMONGTHEMASWELLASOTHERGEOMETRICCHARACTERISTICARECOMBINEDINAFEATUREVECTORTHATISUSEDTOREPRESENTTHEFACETORECOGNIZEAFACE,FIRSTTHEFEATUREVECTOROFTHETESTIMAGEANDOFTHEIMAGEINTHEDATABASEISOBTAINEDSECOND,ASIMILARITYMEASUREBETWEENTHESEVECTORS,MOSTOFTENAMINIMUMDISTANCECRITERION,ISUSEDTODETERMINETHEIDENTITYOFTHEFACEASPOINTEDOUTBYBRUNELLIANDPOGGIO,THETEMPLATEBASEDAPPROACHESWILLOUTPERFORMTHEEARLYGEOMETRICFEATUREBASEDAPPROACHES222TEMPLATEBASEDMETHODSTHETEMPLATEBASEDAPPROACHESREPRESENTTHEMOSTPOPULARTECHNIQUEUSEDTORECOGNIZEANDDETECTFACES3UNLIKETHEGEOMETRICFEATUREBASEDAPPROACHES,THETEMPLATEBASEDAPPROACHESUSEAFEATUREVECTORTHATREPRESENTTHEENTIREFACETEMPLATERATHERTHANTHEMOSTSIGNIFICANTFACIALFEATURES23CORRELATIONBASEDMETHODSCORRELATIONBASEDMETHODSFORFACEDETECTIONAREBASEDONTHECOMPUTATIONOFTHENORMALIZEDCROSSCORRELATIONCOEFFICIENTCN4,5THEFIRSTSTEPINTHESEMETHODSISTODETERMINETHELOCATIONOFTHESIGNIFICANTFACIALFEATURESSUCHASEYES,NOSEORMOUTHTHEIMPORTANCEOFROBUSTFACIALFEATUREDETECTIONFORBOTHDETECTIONANDRECOGNITIONHASRESULTEDINTHEDEVELOPMENTOFAVARIETYOFDIFFERENTFACIALFEATUREDETECTIONALGORITHMSTHEFACIALFEATUREDETECTIONMETHODPROPOSEDBYBRUNELLIANDPOGGIOUSESASETOFTEMPLATESTODETECTTHEPOSITIONOFTHEEYESINANIMAGE,BYLOOKINGFORTHEMAXIMUMABSOLUTEVALUESOFTHENORMALIZEDCORRELATIONCOEFFICIENTOFTHESETEMPLATESATEACHPOINTINTESTIMAGE6,2TOCOPEWITHSCALEVARIATIONS,ASETOFTEMPLATESATDIFFERENTSCALESWASUSEDTHEPROBLEMSASSOCIATEDWITHTHESCALEVARIATIONSCANBESIGNIFICANTLYREDUCEDBYUSINGHIERARCHICALCORRELATIONFORFACERECOGNITION,THETEMPLATESCORRESPONDINGTOTHESIGNIFICANTFACIALFEATUREOFTHETESTIMAGESARECOMPAREDINTURNWITHTHECORRESPONDINGTEMPLATESOFALLOFTHEIMAGESINTHEDATABASE,RETURNINGAVECTOROFMATCHINGSCORESCOMPUTEDTHROUGHNORMALIZEDCROSSCORRELATIONTHESIMILARITYSCORESOFDIFFERENTFEATURESAREINTEGRATEDTOOBTAINAGLOBALSCORETHATISUSEDFORRECOGNITIONOTHERSIMILARMETHODTHATUSEWORLDJOURNALOFCOMPUTERAPPLICATIONANDTECHNOLOGY124150,201343OBJECTRECOGNITIONTHROUGHOUT,THEYPRESENTRESULTSDEMONSTRATINGTHEILLUMINATIONCONEREPRESENTATION28SUPPORTVECTORMACHINEAPPROACHFACERECOGNITIONISAKCLASSPROBLEM,WHEREKISTHENUMBEROFKNOWNINDIVIDUALSANDSUPPORTVECTORMACHINESSVMSAREABINARYCLASSIFICATIONMETHOD18BYREFORMULATINGTHEFACERECOGNITIONPROBLEMANDREINTERPRETINGTHEOUTPUTOFTHESVMCLASSIFIER,THEYDEVELOPEDASVMBASEDFACERECOGNITIONALGORITHMTHEFACERECOGNITIONPROBLEMISFORMULATEDASAPROBLEMINDIFFERENCESPACE,WHICHMODELSDISSIMILARITIESBETWEENTWOFACIALIMAGESINDIFFERENCESPACEWEFORMULATEFACERECOGNITIONASATWOCLASSPROBLEMTHECLASSESAREDISSIMILARITIESBETWEENFACESOFTHESAMEPERSON,ANDDISSIMILARITIESBETWEENFACESOFDIFFERENTPEOPLEBYMODIFYINGTHEINTERPRETATIONOFTHEDECISIONSURFACEGENERATEDBYSVM,WEGENERATEDASIMILARITYMETRICBETWEENFACESTHATARELEARNEDFROMEXAMPLESOFDIFFERENCESBETWEENFACESTHESVMBASEDALGORITHMISCOMPAREDWITHAPRINCIPALCOMPONENTANALYSISPCABASEDALGORITHMONADIFFICULTSETOFIMAGESFROMTHEFERETDATABASEPERFORMANCEWASMEASUREDFORBOTHVERIFICATIONANDIDENTIFICATIONSCENARIOSTHEIDENTIFICATIONPERFORMANCEFORSVMIS7778VERSUS54FORPCAFORVERIFICATION,THEEQUALERRORRATEIS7FORSVMAND13FORPCA29KARHUNENLOEVEEXPANSIONBASEDMETHODS291EIGENFACEAPPROACHINTHISAPPROACH,FACERECOGNITIONPROBLEMISTREATED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    • 簡介:3800英文單詞,英文單詞,21500英文字符,中文英文字符,中文6650字文獻出處文獻出處CHASSIGNOLM,KHOROSHAVINA,KLIMOVAA,ETALARTIFICIALINTELLIGENCETRENDSINEDUCATIONANARRATIVEOVERVIEWJPROCEDIACOMPUTERSCIENCE,2018,1361624ARTIFICIALINTELLIGENCETRENDSINEDUCATIONANARRATIVEOVERVIEWMAUDCHASSIGNOL,ALEKSANDRKHOROSHAVIN,ALEXANDRAKLIMOVA,ANDANNABILYATDINOVAABSTRACTDIGITALTECHNOLOGIESHAVEALREADYBECOMEANINTERNALPARTOFOURLIFETHEYCHANGETHEWAYWEARELOOKINGFORINFORMATION,HOWWECOMMUNICATEWITHEACHOTHER,EVENHOWWEBEHAVETHISTRANSFORMATIONAPPLIESTOMANYAREAS,INCLUDINGEDUCATIONTHEMAINOBJECTIVEOFTHISARTICLEISTOIDENTIFYPROSPECTIVEIMPACTOFARTIFICIALTECHNOLOGIESTOTHESTUDYPROCESSANDTOPREDICTPOSSIBLECHANGESINEDUCATIONALLANDSCAPEINPRESENTEDLITERATUREREVIEWWECONSIDEREDFOURCATEGORIESCUSTOMIZEDEDUCATIONALCONTENT,INNOVATIVETEACHINGMETHODS,TECHNOLOGYENHANCEDASSESSMENT,COMMUNICATIONBETWEENSTUDENTANDLECTURERHAVINGREVIEWEDPUBLICATIONSONTHESUBJECTWEPRESENTHEREAPOSSIBLEPICTUREOFHOWTHEARTIFICIALINTELLIGENCEAIWILLRESHAPEEDUCATIONLANDSCAPEKEYWORDSARTIFICIALINTELLIGENCEEDUCATIONMACHINELEARNINGTECHNOLOGYENHANCEDLEARNING1INTRODUCTIONWEHAVETOADMITTHATDIGITALTECHNOLOGIESHAVEALREADYBECOMEANINTERNALPARTOFOUREVERYDAYLIFETHEYCHANGETHEWAYWEARELOOKINGFORINFORMATION,HOWWECOMMUNICATEWITHEACHOTHER,EVENHOWWEBEHAVEASACONSEQUENCE,THEEDUCATIONALLANDSCAPEHASALSOBEGUNTOCHANGEINDEED,MOREANDMOREEDUCATIONALPROGRAMSINCORPORATEDIGITALCULTUREINTOTHECURRICULUMFOREXAMPLE,INFRANCE,EVENPRIMARYSCHOOLSPROVIDESOMECOURSESABOUTINTERNETTECHNOLOGIES,WHILEHIGHSCHOOLSTUDENTSMUSTPASSANEXAMPROVINGTHEIRCOMPUTERSKILLSMOREOVER,MANYEDUCATIONALFACILITIESHAVELEANINGMANAGEMENTSYSTEMSLMSINSTALLEDSUCHASMOODLE1THESECHANGESAFFECTEDNOTONLYEDUCATIONALCURRICULUMINRECENTYEARSMOREANDMOREDIFFERENTINTERACTIVEEDUCATIONALTECHNOLOGIESAREBECOMINGPOPULARSTUDENTSUSETABLETSINSTEADOFCOPYBOOKS,TEACHERSUTILIZEDIFFERENTLEARNINGPLATFORMSSUCHASGOOGLECLASSROOM,EDMODO,POWERSCHOOL,MOODLETHEREAREALARGENUMBEROFMASSIVEOPENONLINECOURSESMOOCSFORTHEONLINESTUDYSUCHASCOURSERACOMTHEGROWINGAMOUNTOFACTIVATEUSERSOFMOOCSCOURSESSHOWSTHATTHEELECTRONICANDDISTANCELEARNINGMETHODOLOGIESAREAPPRECIATEDBYTHESOCIETYANDSOMEOFTHECOURSESCANGIVESTUDENTSAREALOPPORTUNITYTOGETOFFICIALDEGREEOFSOMEDISTINCTANDVERYRESPECTABLEUNIVERSITYATTHESAMETIME,WECANOBSERVERECENTADVANCESOFVIRTUALREALITYVR,AUGMENTEDREALITYARANDARTIFICIALINTELLIGENCEAIANDITSAPPLICATIONTOEDUCATIONALPROCESSFOREXAMPLE,INNEUROSURGERY,VRTECHNOLOGIESALREADYHAVEASERIOUSIMPACT3DOCULUSSURGICALTHEATERISUSEDFORSIMULATINGSURGERYPROCESSOFREMOVINGBRAINTUMORSFIGURE1MANYAREDUCATIONSPECIFICAPPSCANBEUSEDFORSTUDYINGHIGHLYABSTRACTSUBJECTSARAPPELEMENTS4DISDESIGNEDUNDERSTANDINGATOMICSTRUCTURESOFCHEMICALELEMENTSTHEREAREMANYDEFINITIONSOFAITHATCURRENTLYCOULDBEFOUNDINTHELITERATUREACCORDINGTO2,“ARTIFICIALINTELLIGENCEISTHATACTIVITYDEVOTEDTOMAKINGMACHINESINTELLIGENT,ANDINTELLIGENCEISTHATQUALITYTHATENABLESANENTITYTOFUNCTIONAPPROPRIATELYANDWITHFORESIGHTINITSENVIRONMENT”SOMEANOTHERKEYDEFINITIONOFTHISTECHNOLOGYPRESENTEDIN3AIIS“THEFIELDOFCOMPUTERSCIENCEDEDICATEDTOSOLVINGCOGNITIVEPROBLEMSCOMMONLYKEYWORDSUSEDFORTHESEARCHINGPROCESSWEREASFOLLOWSARTIFICIALINTELLIGENCE,INTELLIGENTTUTORINGSYSTEM,EDUCATION,GAPSINLEARNING,ONLINECLASSROOM,TECHNOLOGYENHANCEDLEARNINGREGARDINGEXCLUSIONANDINCLUSIONCRITERIA,WECONSIDEREDENGLISHLANGUAGEPAPERSPUBLISHEDSINCE2012,PERTINENTTOTHEFOCUSEDPURPOSEOFTHESTUDY22DESCRIPTIONOFMODELFRAMEWORKFORANARRATIVEOVERVIEWINORDERTOMAKEANADEQUATEPRESENTATIONOFTHELITERATUREFINDINGS,WEPROPOSETHEFOLLOWINGMODELFRAMEWORKOFTHEEDUCATIONALLANDSCAPETHISMODELISPRESENTEDINFIGURE1WECONSIDERFOURMAJORPARTSOFTHEEDUCATIONALPROCESSTHATCOULDBEAFFECTEDBYAICONTENTTEACHINGMETHODSASSESSMENTCOMMUNICATIONTERMCONTENTREFERSTOTHEBODYOFKNOWLEDGEANDINFORMATIONTHATTEACHERSTEACHANDTHATSTUDENTSAREEXPECTEDTOLEARNINAGIVENSUBJECTORCONTENTAREAINTHISPAPER,WECONSIDERTHATITMAYINCLUDEBOTHEDUCATIONALCONTENTANDITSCUSTOMIZATIONTEACHINGMETHODSREPRESENTDIFFERENTPRINCIPLESANDMETHODSUSEDBYTEACHERSTOENABLESTUDENTLEARNINGTHESESTRATEGIESAREDETERMINEDPARTLYONTHESUBJECTMATTERTOBETAUGHTANDPARTLYBYTHENATUREOFTHELEARNERTHISPARTISVERYINTERESTINGANDIMPORTANTASNAMELYTEACHINGMETHODSARECURRENTLYAFFECTEDBYNEWTECHNOLOGIESASSESSMENTREFERSTOTHEWIDEVARIETYOFMETHODSORTOOLSTHATEDUCATORSUSETOEVALUATE,MEASURE,ANDDOCUMENTTHEACADEMICREADINESS,LEARNINGPROGRESS,SKILLACQUISITION,OREDUCATIONALNEEDSOFSTUDENTSWITHTHEDEVELOPMENTOFMOOCS,THEREISANINCREASINGNECESSITYWITHTECHNOLOGYENHANCEDASSESSMENTTOOLSTHOSETHREEPARTSJOINDIFFERENTELEMENTSOFTHELEARNINGPROCESSWEALSOADDEDTHERECOMMUNICATIONPARTASESSENTIALFORSTUDENTTEACHERINTERACTIONITISALSOREFERREDTOMOOCS,TRADITIONALCLASSESWITHMANYSTUDENTSANDMULTIDISCIPLINARYCOURSESFIGURE1MODELFRAMEWORKTHEFOLLOWINGSECTIONOFTHEPAPERPRESENTRESULTSANDDISCUSSIONOFFINDINGSINACCORDANCEWITHTHEFRAMEWORKDESCRIBED3TRENDSANDOPPORTUNITIES
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    • 簡介:中文中文5100字,字,3200單詞,單詞,16萬英文字符萬英文字符出處出處STONEA,LINDTJWVD,CHENSDESIGNANDCOSTSFORSIMPLEMADECONTINUOUSROLLEDSTEELGIRDERBRIDGESLITERATURESURVEYJPRACTICEPERIODICALONSTRUCTURALDESIGNJWVANDELINDT,MASCE2ANDSCHEN,MASCE3摘要在整個美國,采用先簡支后連續(xù)方法修建的鋼橋正越來越興起,因為它能顯著地節(jié)約成本。特別是,該方法能避免鋼主梁鋼部分拼接,而且可以按簡支梁設(shè)計梁和板的恒重,然后其他的活載和剩下的恒荷按連續(xù)梁設(shè)計。這樣消除了判定和考慮棱角部位是有利與不利部位的時間。而且因為不需要大量拼接方面的工作量,大大加快了建設(shè)速度。在2006年,科羅拉多州交通局發(fā)起了一項研究用來1評核當(dāng)前使用標(biāo)準(zhǔn)型鋼簡支變連續(xù)的方法;2開發(fā)設(shè)計圖表用以快速擬定鋼橋尺寸和進行簡支變連續(xù)橋成本估算。本文直到2007年才為這種結(jié)構(gòu)提出一種先進的復(fù)核模式,本文集中研究了最近完成的很成功的此類土木工程項目。土木工程數(shù)據(jù)庫主題詞橋梁設(shè)計;鋼梁;橋梁;鋼材;造價。本文關(guān)鍵詞簡支變連續(xù);鋼結(jié)構(gòu)設(shè)計;橋梁設(shè)計;型鋼梁。介紹過去50年里,在美國的中西部,中小跨徑的鋼橋的建設(shè)規(guī)模已經(jīng)下滑,最好的形勢,也只是保持穩(wěn)態(tài),而預(yù)應(yīng)力鋼筋混凝土橋梁結(jié)構(gòu)占據(jù)著主要市場。特別是在科羅拉多州,實際上鋼橋梁建設(shè)市場漸漸消退而預(yù)應(yīng)力的橋梁占據(jù)市場的現(xiàn)象早已為人所知。它市場消退的一個原因是,在這個區(qū)域缺少與該州較強實力的預(yù)制混凝土公司合作的鋼鐵廠。另外,在某些區(qū),如科羅拉多州,缺乏可用資金和創(chuàng)新工藝和機具去設(shè)計和修建鋼橋梁,也妨害了這個產(chǎn)業(yè)發(fā)展。在橋型式選擇的投標(biāo)過程中,投標(biāo)者必須做一些準(zhǔn)確預(yù)算鋼材與混凝土方面的工作。預(yù)制混凝土產(chǎn)業(yè)也已經(jīng)致力于探究新的工藝使這個過程更加容易,隨后借此占據(jù)了在科羅拉多州的市場。這些工藝類型對于投標(biāo)鋼橋梁是行不通的,因此,對設(shè)計和建筑承包商而言,需要在鋼材的選擇上做更多工作。這個趨勢使得投標(biāo)者去思考出更容易的,隨著時間推移,更令人熟悉的選擇,而且此類選擇逐漸被預(yù)應(yīng)力混凝土市場所占據(jù)。在這種方法中,鋼梁被預(yù)制和運送到作業(yè)現(xiàn)場,工人在低應(yīng)力狀態(tài)下用螺栓或焊接拼接方法將它們組裝起來。而最近有一個比較簡單的方法,其中簡支梁是按照設(shè)計者的規(guī)定設(shè)計,然后主梁在橋墩處通過使用一個混凝土的隔板或一個搭接板連接使之成為連續(xù)體系。(AZIZINAMINIETAL2005)。在這種方法中,當(dāng)混凝土路面和搭接板澆筑完成時,簡支梁的承受荷載就得考慮自重和潮濕的混凝土路面的總和?;炷粮舭逵步Y(jié)之后結(jié)果就變成連續(xù)體系梁橋,所有其它的荷載(活荷載,二期恒載)被連續(xù)體系的主梁共同承擔(dān)。這一種理念稱之為簡支承受恒載,連續(xù)承受活載,或者叫簡支變連續(xù)體系(AZIZINAMINIETAL2005)。與“傳統(tǒng)方法”相比參照,采用現(xiàn)場的拼裝方法實現(xiàn)的簡支變連續(xù)具有一些優(yōu)點,主要有1它不需要昂貴的現(xiàn)場拼接費用;2減少在支點的負(fù)彎矩,同時增加了在跨中的正彎矩;3全跨都采用等截面設(shè)計可以減少裝配難度,最大限度減少鋼梁的細(xì)節(jié)設(shè)計;4小型號的起重機就能滿足裝配主梁系統(tǒng)的需求;5不需要現(xiàn)場拼裝,架設(shè)時間減少;6與常規(guī)比較方法相比,對交通中斷影響較小。截至2007年,有幾個州已經(jīng)開始在他們的一些鋼橋中,設(shè)計和施工采用這種類型。已經(jīng)修造了簡單變連續(xù)的鋼橋的各州名單中包括科羅拉多州,新墨西哥州,內(nèi)布拉斯加州,俄亥俄州,和田納西州。本文對這些橋梁項目做一個簡單的概要,主要包括設(shè)計方法和造價比較。內(nèi)布拉斯加州最近內(nèi)布拉斯加公路局與內(nèi)布拉斯加大學(xué)聯(lián)合合作,確定/制定一個小跨徑(80110英尺)鋼橋梁比較經(jīng)濟合理的解決方案(AZIZINAMINIETAL2003)。兩個提出的備選方案一個是主梁在簡支時承擔(dān)恒載,而連續(xù)時承擔(dān)活載;另一個是主梁全部連續(xù)承擔(dān)所有的恒載與活載。隨后進行的兩個備選方案試驗表明,連續(xù)時承擔(dān)活載的主梁,在支點處只產(chǎn)生一個較小的負(fù)彎矩,同時在跨中產(chǎn)生較高的正彎矩(AZIZINAMINIETAL2003)。這個結(jié)果很具有吸引力,正如上面提到的現(xiàn)象,因為這樣可以斷定將主梁全長度設(shè)計為等截面是經(jīng)濟的。經(jīng)過比較選擇,內(nèi)布拉斯加大學(xué)推薦恒載簡支而活載連續(xù)梁。他們最初在支點連接處細(xì)節(jié)構(gòu)造設(shè)計,如圖1所示。
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    • 簡介:THISARTICLEWASDOWNLOADEDBY113247238166ON30DECEMBER2014,AT1832PUBLISHERTAYLORFRANCISINFORMALTDREGISTEREDINENGLANDANDWALESREGISTEREDNUMBER1072954REGISTEREDOFFICEMORTIMERHOUSE,3741MORTIMERSTREET,LONDONW1T3JH,UKTRANSPORTPUBLICATIONDETAILS,INCLUDINGINSTRUCTIONSFORAUTHORSANDSUBSCRIPTIONINFORMATIONHTTP//WWWTANDFONLINECOM/LOI/TRAN20SOMEELEMENTSOFTHERO‐ROTERMINALSRI?ARDASMAKSIMAVI?IUSAAKLAIPEDAUNIVERSITYKU,BIJūNUG17,KLAIPEDA,LT‐5800,LITHUANIAEMAILPUBLISHEDONLINE27OCT2010TOCITETHISARTICLERI?ARDASMAKSIMAVI?IUS2004SOMEELEMENTSOFTHERO‐ROTERMINALS,TRANSPORT,192,7581TOLINKTOTHISARTICLEHTTP//DXDOIORG/101080/1648414220049637957PLEASESCROLLDOWNFORARTICLETAYLORFRANCISMAKESEVERYEFFORTTOENSURETHEACCURACYOFALLTHEINFORMATIONTHE“CONTENT”CONTAINEDINTHEPUBLICATIONSONOURPLATFORMHOWEVER,TAYLORFRANCIS,OURAGENTS,ANDOURLICENSORSMAKENOREPRESENTATIONSORWARRANTIESWHATSOEVERASTOTHEACCURACY,COMPLETENESS,ORSUITABILITYFORANYPURPOSEOFTHECONTENTANYOPINIONSANDVIEWSEXPRESSEDINTHISPUBLICATIONARETHEOPINIONSANDVIEWSOFTHEAUTHORS,ANDARENOTTHEVIEWSOFORENDORSEDBYTAYLORFRANCISTHEACCURACYOFTHECONTENTSHOULDNOTBERELIEDUPONANDSHOULDBEINDEPENDENTLYVERIFIEDWITHPRIMARYSOURCESOFINFORMATIONTAYLORANDFRANCISSHALLNOTBELIABLEFORANYLOSSES,ACTIONS,CLAIMS,PROCEEDINGS,DEMANDS,COSTS,EXPENSES,DAMAGES,ANDOTHERLIABILITIESWHATSOEVERORHOWSOEVERCAUSEDARISINGDIRECTLYORINDIRECTLYINCONNECTIONWITH,INRELATIONTOORARISINGOUTOFTHEUSEOFTHECONTENTTHISARTICLEMAYBEUSEDFORRESEARCH,TEACHING,ANDPRIVATESTUDYPURPOSESANYSUBSTANTIALORSYSTEMATICREPRODUCTION,REDISTRIBUTION,RESELLING,LOAN,SUBLICENSING,SYSTEMATICSUPPLY,ORDISTRIBUTIONINANYFORMTOANYONEISEXPRESSLYFORBIDDENTERMSCONDITIONSOFACCESSANDUSECANBEFOUNDATHTTP//WWWTANDFONLINECOM/PAGE/TERMSANDCONDITIONS76??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????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    • 簡介:交通運輸2004,VOLXIX,NO2,7581中文中文57005700字出處出處MAKSIMAVI?IUSMAKSIMAVI?IUSRRSOMESOMEELEMENTSELEMENTSOFOFTHETHEROROROROTERMINALSJTERMINALSJTRANSPORT,TRANSPORT,2004,2004,19275811927581滾裝碼頭的要素介紹滾裝碼頭的要素介紹呂卡達斯呂卡達斯馬克西瑪維丘斯馬克西瑪維丘斯克萊佩達大學(xué)克萊佩達大學(xué),比巨納比巨納17,17,克萊佩達克萊佩達,LT,LT‐5800,5800,立陶宛立陶宛摘要摘要滾裝運輸是海洋物流業(yè)務(wù)的重要組成部分,但是及時裝運貨物和裝船工藝是影響滾裝船貨運時間的一個重要因素。如何最大程度的減少滾裝碼頭的裝船時間是研究的重點。否則可能會干擾船舶調(diào)度,甚至影響碼頭運營和港口交通。另一個經(jīng)常遇到的問題是滾裝碼頭無法直接接受并處理到達的貨物。這主要是碼頭通過口岸、海關(guān)和邊境控制單元的數(shù)量不足,并且碼頭停車場/存儲能力和布置的不足。針對上述問題,本文給出適當(dāng)?shù)挠嬎銇碓u估碼頭口岸通過能力,海關(guān)和邊境控制設(shè)施。因此,嘗試優(yōu)化碼頭操作效率和吸引力,使削弱滾裝運輸?shù)囊蛩赜绊憸p小,尤其是關(guān)于運輸時間。關(guān)鍵詞碼頭,口岸,海關(guān)和邊境控制設(shè)施,滾裝船,停車關(guān)鍵詞碼頭,口岸,海關(guān)和邊境控制設(shè)施,滾裝船,停車/存儲能力。存儲能力。1.簡介簡介立陶宛滾裝船服務(wù)運營商在滾裝船運輸市場激烈的競爭中努力保留他們的位置,以及在新的滾裝船運輸市場突破自身壯大自己。然而,值得一提的是,與其他運輸公司和滾裝碼頭之間的合作不總是可行的,有時會使貨運受到不利因素的影響,這會阻礙對其評估,同時影響貨物運輸和交通流量。當(dāng)港口碼頭和滾裝船班輪經(jīng)營者之間的合作不能很好的平衡雙方的利益時,甚至?xí)霈F(xiàn)更多的問題。由于沒有道路供車輛行駛,滾裝船貨運運輸使車輛跨海貿(mào)易成為可能(當(dāng)沒有其他技術(shù)手段是可行的時候,黃金是非常昂貴的);沿著現(xiàn)有的公路網(wǎng)絡(luò),汽車滾裝碼頭有效的節(jié)省了汽車貿(mào)易的成本和時間。在新興市場出現(xiàn)后,許多新的滾裝船貨運線路很快被迫退出運行和關(guān)閉,因為沒有前途,或其他的原因,如不好的績效和未能吸引到足夠的貨物,被低估的優(yōu)點,缺點和威脅,和夸張的可能性評估,錯誤評估貨運流量和太樂觀的人生觀,解釋不足或產(chǎn)生對滾裝運輸?shù)呢?fù)面影響因素估計不足,等等。本研究旨在通過確定所需的碼頭口岸數(shù)量、海關(guān)和邊境控制,以及停車場/倉儲設(shè)施,確定滾裝輪渡貨運的最小處理時間。在過去的十年中僅有較少的研究論文是與滾裝運輸問題有關(guān)的。重要的研究在交通工程領(lǐng)域,經(jīng)濟學(xué)領(lǐng)域和物流對滾裝運輸?shù)陌l(fā)展產(chǎn)生了多大的影響。一些描述性的敘事研究,為滾裝運輸發(fā)展提供戰(zhàn)略解決方案。在過去的幾年中,科學(xué)家和研究人員已經(jīng)討論了汽車的遠洋、鐵路和內(nèi)河運輸問題,并作出了嘗試。馬可波羅項目也為此事在很大程度上提供了可用經(jīng)驗。交通運輸2004,VOLXIX,NO2,7581考慮到客觀和主觀(圖1)可能影響滾裝貨物運輸?shù)囊蛩?,我們可以減少這些影響,因為運營商能以自己的方式使運輸影響減少。有些人注重滾裝運輸成本、時間和安全性能的影響,便可降低和減少其對滾裝運輸?shù)挠绊?。有些影響因素是可以人為改變的,而有些是人為改變不了了的如天氣?zāi)害。不管是何種因素,只要是影響滾裝運輸發(fā)展的都要考慮并評估。貨物運輸成本在很大程度上影響到貨物運輸選擇的交通工具,但是,若沒有考慮貨物輸送和處理效率,安全等方面都是不科學(xué)的。運輸時間是滾裝貨物運輸中的一個重要部分,運營商和政府機構(gòu)都要有滾裝碼頭作業(yè)布置對總運輸時間的影響。標(biāo)簽打印和收集檢查進入滾裝口岸邊境控制檢查海關(guān)清查等候裝船裝船貨物運輸靠岸存儲地排隊邊境控制海關(guān)清查離開碼頭圖22滾裝船貨物運輸流程滾裝船貨物運輸流程圖11滾裝貨物運輸影響因素滾裝貨物運輸影響因素
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簡介:DESIGNANDCOSTSFORSIMPLEMADECONTINUOUSROLLEDSTEELGIRDERBRIDGESLITERATURESURVEYASTONE,AMASCE1JWVANDELINDT,MASCE2ANDSCHEN,MASCE3ABSTRACTTHEMETHODOFSIMPLEMADECONTINUOUSFORSTEELBRIDGESISBECOMINGMOREPOPULARTHROUGHOUTTHEUNITEDSTATESBECAUSEITENABLESSIGNIFICANTCOSTSAVINGSSPECIFICALLY,THEMETHODALLOWSONETOAVOIDSTEELBRIDGEGIRDERSPLICESANDDESIGNTHESTEELSECTIONSFORTHESELFWEIGHTANDTHEWEIGHTOFTHESLABASSIMPLYSUPPORTEDANDTHENTHEADDITIONOFLIVELOADANDREMAININGDEADLOADSASCONTINUOUSTHISBALANCESTHEMOMENTSBETWEENTHEPOSITIVEANDNEGATIVEREGIONSALLOWINGFORAPRISMATICSECTIONANDEVENADDSSPEEDOFCONSTRUCTIONSINCETHEFIELDSPLICESARENOTNEEDEDIN2006,THECOLORADODOTSPONSOREDASTUDYTO?1?REVIEWCURRENTAPPROACHESTOSIMPLEMADECONTINUOUSUSINGSTANDARDROLLEDSECTIONSAND?2?DEVELOPDESIGNCHARTSFORRAPIDSIZINGOFSTEELBRIDGEBEAMSANDCOSTESTIMATIONFORSIMPLEMADECONTINUOUSTHISPAPERPRESENTSASTATEOFTHEARTREVIEWUPUNTIL2007FORTHISTYPEOFCONSTRUCTIONANDFOCUSESONSEVERALOFTHEMOSTRECENTANDSUCCESSFULTRANSPORTATIONDEPARTMENTPROJECTSDOI101061/?ASCE?SC194355760000045CEDATABASESUBJECTHEADINGSBRIDGEDESIGNSTEELBEAMBRIDGES,STEELCOSTSAUTHORKEYWORDSSIMPLEMADECONTINUOUSSTEELDESIGNBRIDGEDESIGNROLLEDSTEELBEAMINTRODUCTIONOVERTHEPAST50YEARSINTHEMIDWESTERNUNITEDSTATES,CONSTRUCTIONOFSHORTTOMEDIUMSPANSTEELBRIDGESHASDECLINEDOR,ATBEST,REMAINEDCONSTANT,WHILEPRESTRESSEDCONCRETEBRIDGECONSTRUCTIONHASDOMINATEDTHEMARKET?AZIZINAMINIETAL2003?THESTATEOFCOLORADO,INPARTICULAR,HASSEENSTEELBRIDGECONSTRUCTIONVIRTUALLYDISAPPEARANDTHEMARKETDOMINATEDBYPRESTRESSEDBRIDGES?WANG,T?2006?“COLORADODEPARTMENTOFTRANSPORTATION,”PERSONALCOMMUNICATION?ONEREASONFORTHISSHARPDECLINEISTHELACKOFSTEELMILLSINTHEREGIONCOMBINEDWITHASTRONGPRESENCEOFPRECASTCONCRETECOMPANIESINTHESTATEINADDITION,ALACKOFREADILYAVAILABLEECONOMICALANDINNOVATIVEPROCEDURESANDTOOLSTODESIGNANDCONSTRUCTSTEELBRIDGESHASHINDEREDTHEINDUSTRYINCERTAINAREASSUCHASCOLORADODURINGTHEBIDDINGPROCESSFORSELECTIONOFTHEBRIDGETYPE,ITISMANDATEDTHATACCURATEBIDDINGOFBOTHSTEELANDCONCRETEBEDEVELOPEDTHEPRECASTCONCRETEINDUSTRYHASWORKEDTODEVELOPTOOLSTOMAKETHISPROCESSEASIERANDSUBSEQUENTLYDOMINATEDTHEMARKETINCOLORADOTHESETYPESOFTOOLSARENOTAVAILABLEFORBIDDINGSTEELBRIDGES,THUSMOREWORKBYADESIGN/BUILDCONTRACTORISREQUIREDFORTHESTEELOPTIONTHETENDENCYISFORBIDDERSTOGOWITHTHEEASIER,ANDOVERTIME,MOREUNDERSTOODOPTIONANDTHUSTHETYPESELECTIONISROUTINELYDOMINATEDBYPRESTRESSEDCONCRETESIMPLEMADECONTINUOUSECONOMICALSTEELBRIDGEDESIGNMETHODTHECONVENTIONALAPPROACHFORCONSTRUCTINGMULTISPANSTEELBRIDGESISTODESIGNTHEMASCONTINUOUSGIRDERSTODISTRIBUTETHELOADOVERALLMEMBERSINTHATMETHOD,THEROLLEDGIRDERSAREFABRICATEDANDSHIPPEDTOTHEJOBSITEWHERETHEYAREASSEMBLEDBYTHECONTRACTORUSINGABOLTEDORWELDEDFIELDSPLICEATLOWSTRESSPOINTSTHEREISARELATIVELYRECENTMETHODWHERESIMPLYSUPPORTEDBEAMSARESPECIFIEDBYTHEDESIGNERANDBEAMSARETHENMADECONTINUOUSATTHEPIERSUSINGACONCRETEDIAPHRAGMORACONNECTIONPLATE?AZIZINAMINIETAL2005?INTHISAPPROACH,ONCETHESLABANDDIAPHRAGMAREPOURED,THESIMPLYSUPPORTEDBEAMACCOUNTSFORITSWEIGHTALONGWITHTHEWETCONCRETEDECKASTHECONCRETEDIAPHRAGMHARDENS,MAKINGTHEGIRDERSCONTINUOUS,ALLOTHERLOADS?LIVE,COMPOSITEDEAD?ARESHAREDTHROUGHTHESYSTEMOFBEAMSTHISLATTERCONCEPTISCALLEDSIMPLEFORDEADLOAD,CONTINUOUSFORLIVELOAD,ORSIMPLEMADECONTINUOUS?AZIZINAMINIETAL2005?SOMEOFTHEMAJORADVANTAGESOFTHESIMPLEMADECONTINUOUSMETHODOVERTHEFIELDSPLICEMETHOD,HEREAFTERREFERREDTOASTHE“CONVENTIONALMETHOD,”ARE?1?ITELIMINATESTHENEEDFOREXPENSIVEFIELDSPLICES?2?REDUCESTHENEGATIVEMOMENTATTHEPIER,WHILEINCREASINGTHEPOSITIVEMOMENTATMIDSPAN?3?MAINTAINSAUNIFORMCROSSSECTIONTHROUGHOUTSPANTOREDUCEFABRICATIONEFFORTLEADINGTOMINIMUMDETAILINGOFTHESTEELBEAM?4?SMALLERCRANESAREREQUIREDTOASSEMBLETHEBEAMSYSTEM?5?ERECTIONTIMEISREDUCEDWITHOUTTHENEEDFORFIELDSPICESAND?6?THEREISMINIMALTRAFFICINTERRUPTIONCOMPAREDTOTHECONVENTIONALMETHODASOF2007,SEVERALSTATESHAVEBEGUNTOIMPLEMENTTHISTYPEOFDESIGNANDCONSTRUCTIONFORSOMEOFTHEIRSTEELBRIDGESTHELISTOFSTATESTHATHAVEBUILTSIMPLEMADECONTINUOUSSTEEL1GRADUATERESEARCHASSISTANT,DEPTOFCIVILANDENVIRONMENTALENGINEERING,COLORADOSTATEUNIV,FORTCOLLINS,CO8052323722PROFESSORANDDRUMMONDCHAIR,DEPTOFCIVIL,CONSTRUCTION,ANDENVIRONMENTALENGINEERING,UNIVOFALABAMA,BOX870205,TUSCALOOSA,AL354870202?CORRESPONDINGAUTHOR?EMAILJWVANDELINDTENGUAEDU3ASSISTANTPROFESSOR,DEPTOFCIVILANDENVIRONMENTALENGINEERING,COLORADOSTATEUNIV,FORTCOLLINS,CO805232372NOTETHISMANUSCRIPTWASSUBMITTEDONAUGUST5,2008APPROVEDONAUGUST5,2009PUBLISHEDONLINEONJULY15,2010DISCUSSIONPERIODOPENUNTILJANUARY1,2011SEPARATEDISCUSSIONSMUSTBESUBMITTEDFORINDIVIDUALPAPERSTHISPAPERISPARTOFTHEPRACTICEPERIODICALONSTRUCTURALDESIGNANDCONSTRUCTION,VOL15,NO3,AUGUST1,2010?ASCE,ISSN10840680/2010/3231–235/2500PRACTICEPERIODICALONSTRUCTURALDESIGNANDCONSTRUCTION?ASCE/AUGUST2010/231PRACTPERIODSTRUCTDESCONSTR201015231235DOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON06/05/13COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVEDWITHAUNITWEIGHTOFSTRUCTURALSTEELOF377PSFTHEPRICEOFTHESTEELFROMTHELOWBIDDERWAS056/LBINPLACE,SIGNIFICANTLYLOWERTHANTHEIRPREVIOUSDESIGNCONSTRUCTIONOFTHETOTALBRIDGETOOKONLY90DAYS,WITHOUTINCENTIVESTDOTALSODESIGNEDTWOSIMILARBRIDGES,WHICHCONTAINEDINTEGRALABUTMENTSADVANTAGESOFTHEINTEGRALABUTMENTSINCLUDEBEINGJOINTLESS,REDUCEDMAINTENANCE,ANDPOTENTIALLYDAMPENINGSEISMICMOTIONTHEFIRSTISAFIVESPANBRIDGE,TAKINGSTATEROAD210OVERPONDCREEKTHESUBSTRUCTUREISSKEWEDAT35°CARRYINGSPANSOF94,103,132,132,AND118FTFIVEW40?248GRADE50WGIRDERSSUPPORTTHE42FTWIDEDECKTHESTEELBEAMSWERESETIN30DAYSTHESECONDOFTHETWOWASANOTHERLARGEROLLEDBEAMBRIDGECONSTRUCTEDIN2006,CARRYINGCHURCHAVENUEOVERROUTE158AND71ITCONSISTEDOFSIXSPANSMEASURING80,100,100,100,93,AND90FTTHE56FTWIDEDECKISSUPPORTEDBYSEVENLINESOFW30?173GRADE50WGIRDERS,SPACEDAT8FT2INTHEENGINEERSESTIMATEFORTHEBRIDGEWAS80/SQFT,TOTALING282MILLIONTHELOWCONTRACTORBIDCAMEINAT7293/SQFT,OR255MILLION?TALBOT2005?DETAILSOFTHECONNECTIONATTHEPIERALONGWITHTHESPANOFTHECONCRETEDIAPHRAGMCANBESEENINFIG4OHIOTHEOHIODOTINSTALLEDASIMPLEMADECONTINUOUSSTEELBRIDGEASAREPLACEMENTBRIDGEINTHESUMMEROF2003THEEXISTINGSTRUCTUREWASASIXSPAN?90FTAPPROACHESWITHFOUR112FT6INMAINSPANS?29FTWIDESTEELSTRINGERBRIDGECROSSINGTHESCIOTORIVERINCIRCLEVILLEONUS22?OHIODOT2003?BECAUSEOFTIMECONSTRAINTS,THESTATEDECIDEDTOMAKETHEPROJECTADESIGN/BUILDFASTTRACKJOBFIVEGIRDERS,SPACEDAT9FT,WEREREQUIREDTOSUPPORTTHEBRIDGE,WHICHWASWIDENEDTO44FTHIGHPERFORMANCESTEELGIRDERS,M270GRADE50W,WEREDESIGNEDASSIMPLYSUPPORTEDANDWEREMADECONTINUOUSINTHEFIELDBYINTEGRALCONCRETEDIAPHRAGMSTHECONCRETEDIAPHRAGMWAS3FTWIDEANDWASCASTACROSSTHEPIERCOMPARABLETOTHENEBRASKAANDTENNESSEEDIAPHRAGMSTHEBEAMSANDDIAPHRAGMALSOSATONANELASTOMERICBEARINGPADANDLOADTRANSFERPLATETHEBEAMSWERECONSTRUCTEDASPLATEGIRDERSWITHA54INWEBDEPTHAND18INFLANGESTHETOTALCONSTRUCTIONTIMEFORTHEUS22BRIDGE,FROMDEMOLITIONTOTHECOMPLETEDCONSTRUCTIONOFTHENEWBRIDGE,WAS48DAYS?OHIODOT2003?THEBRIDGEUNITCOSTWAS211MILLION,WHICHEQUATEDTO756/SQFTDESIGNDETAILSOBTAINEDFROMTHESTATEOFOHIOAREPRESENTEDINFIG5NEWMEXICOTHENEWMEXICODOTUSEDTHESIMPLEFORDEADCONTINUOUSFORLIVEMETHODTODESIGNAFIVESPAN525FT?105FT/SPAN?,345FTWIDEREPLACEMENTSTEELPLATEGIRDERBRIDGE?BARBER2006?THESUPERSTRUCTURECONTAINED4LINESOFPLATEGIRDERSSPACEDAT7FT6INTHEPLATEGIRDERDIMENSIONSWEREA54INWEBDEPTH,138INTOPFLANGE,AND173INBOTTOMFLANGE?BARBER2006?THATBRIDGECROSSESTHERIOGRANDERIVERONNM187ANDWASCOMPLETEDINTHESUMMEROF2005ONANEARLIERPROJECT,THESIMPLEMADECONTINUOUSCONCEPTSERVEDINADUALDESIGNANALYSIS?STEELVERSUSPRESTRESSEDCONCRETE?FORABRIDGEONUS70INSOUTHERNNEWMEXICOADESIGNCONSULTANTFORTHEUS70PROJECT,PARSONSBRINCKERHOFF,INCBIDTHETWOALTERNATIVESATADIFFERENCEOFONLY02OUTOFATOTALPROJECTCONSTRUCTIONCOSTOF21MILLION?BARBER2006?ANINNOVATIVEFEATUREONTHISPROJECTWERETHEBOLTSBEINGPLACEDOUTSIDEOFTHECONCRETEDIAPHRAGMTOALLOWFORTIGHTENINGAFTERTHEDECKANDDIAPHRAGMSWEREPOUREDREINFORCINGBARSWEREADDEDTOTHECONCRETEDIAPHRAGMTOACHIEVETHEREQUIREDNEGATIVEMOMENTCAPACITYBARSWEREALSOADDEDABOVETHEPIERTOALLEVIATESTRESSESONTHECONTINUITYCONNECTIONPLATEANDARESHOWNINFIG6THECOSTOFTHEBRIDGEWAS75PERSQFTBIDSFORPRECASTCONCRETEGIRDERBRIDGESOFCOMPARABLESQUAREFOOTAGEWERE68AND88PERSQFTEACH?BARBER2006?COLORADOTHECOLORADODOTDESIGNEDANDCOMPLETEDITSFIRSTSIMPLEMADECONTINUOUSSTEELBRIDGEINJULY2006THESTEELBRIDGEREPLACEDANOUTOFDATEBRIDGEONUS36THATCROSSEDBOXELDERCREEKOUTSIDEOFDENVER?“STEELBRIDGEUSESSIMPLEMADECONTINUOUSCONSTRUCTION”2006?THENEWSUPERSTRUCTUREWAS470FTLONGWITHSIXEQUALSPANS,77FT/SPANTHE44FTWIDECONCRETEDECKWASSUPPORTEDBYSIXLINESOFW33?152GRADE50WROLLEDBEAMGIRDERSSPACEDAT7FT4INTHEBEAMSWERESUPPLIEDTOTHESITEINPAIRSWITHW27?84DIAPHRAGMSCONNECTEDTOTHEBEARINGSTIFFENERSTHESECROSSFRAMESWERESPACEDAT19FTONTHEINTERIORGIRDERSAND12FT4INONTHEEXTERIORGIRDERSANDPROVIDEDSTABILITYDURINGERECTIONSIMILARSTEELDIAPHRAGMSWEREALSODESIGNEDTORUNOVERFIG4TENNESSEEDESIGNDETAILFORCONTINUITYATPIERFIG5CONCRETEDIAPHRAGMDETAILSATPIERONSCIOTORIVERBRIDGEFIG6DETAILOFCONNECTIONPLATEONTOPFLANGESONNM187BRIDGEPRACTICEPERIODICALONSTRUCTURALDESIGNANDCONSTRUCTION?ASCE/AUGUST2010/233PRACTPERIODSTRUCTDESCONSTR201015231235DOWNLOADEDFROMASCELIBRARYORGBYCHANGSHAUNIVERSITYOFSCIENCEANDTECHNOLOGYON06/05/13COPYRIGHTASCEFORPERSONALUSEONLYALLRIGHTSRESERVED
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    • 簡介:12980英文單詞,英文單詞,17萬英文字符,萬英文字符,5200漢字漢字文獻出處文獻出處BERNHARDTJM,MAYSD,HALLAKSOCIALMARKETINGATTHERIGHTPLACEANDRIGHTTIMEWITHNEWMEDIAJJOURNALOFSOCIALMARKETING,2012,22130137SOCIALMARKETINGATTHERIGHTPLACEANDRIGHTTIMEWITHNEWMEDIAJMBERNHARDT,DMAYS,AKHALLABSTRACTPURPOSE–THEPURPOSEOFTHISPAPERISTOSEEKTODISCUSSHOWTHENEWMEDIAREVOLUTIONCANIMPROVESOCIALMARKETINGBYBRINGINGTHE“PLACE”O(jiān)NEOFFOURP’SFROMTHEMARKETINGMIXCLOSERTOTHECONSUMERDESIGN/METHODOLOGY/APPROACH–THISPAPERDESCRIBESCURRENTNEWMEDIATRENDSRELATEDTOSOCIALMEDIAANDMOBILECOMMUNICATIONTECHNOLOGIESANDDISCUSSESTHEIMPLICATIONSOFTHESETECHNOLOGIESFORSOCIALMARKETINGBYEXPLORINGEXAMPLESOFTHEIRUSEINCOMMERCIALMARKETING,SOCIALCHANGE,ANDPUBLICHEALTHFINDINGS–THERAPIDGROWTHOFONLINESOCIALNETWORKSANDNEARUBIQUITYOFMOBILEPHONESINMUCHOFTHEWORLDOFFERSSOCIALMARKETERSENORMOUSPOTENTIALFORENGAGINGCONSUMERSINRADICALLYNEWWAYSTHENATUREOFTHESENEWCOMMUNICATIONPLATFORMSDIFFERSFROMTRADITIONALMEDIAINIMPORTANTWAYSTHATCANMAKETHEMMOREEFFECTIVEFORMARKETING,MOSTNOTABLYTHEPOTENTIALFORDEEPERCONSUMERENGAGEMENT,MULTIDIRECTIONALINFORMATIONEXCHANGE,ANDLOCATIONBASEDTRACKINGANDMESSAGINGPRACTICALIMPLICATIONS–THETRENDSDESCRIBEDINTHISPAPERARERAPIDLYANDFUNDAMENTALLYCHANGINGHOWCOMMERCIALMARKETERS,BRANDMANAGERS,ANDCONSUMERRELATIONSHIPMANAGERSENGAGEWITHTHECURRENTANDPROSPECTIVECONSUMERSSOCIALMARKETINGSHOULDLEARNFROMTHESECHANGESANDLEVERAGETHESENEWMEDIATOENGAGELARGENUMBERSOFCONSUMERSMOREDEEPLYANDCLOSERTOTHE“RIGHTPLACEANDRIGHTTIME”THANTHEYEVERCOULDBEFOREORIGINALITY/VALUE–THISPAPEREXPLORESATOPICTHATHASBEENINTRODUCEDATTHEGLOBALNONPROFITANDSOCIALMARKETINGCONFERENCEINDUBLIN,IRELANDINAPRIL2011THEDISCUSSIONSHOULDENCOURAGESOCIALMARKETERSTORECONSIDERTHEROLEOF“PLACE”ANDEXPLOREHOWNEWMEDIACANBRINGPLACECLOSERTOCONSUMERS3WORK,ORSCHOOLS,PRECISELYATTHETIMETHATDECISIONSAREMADEINOTHERWORDS,NEWMEDIACANSHIFT“PLACE”FROMRESTROOMSANDGROCERYSTORES,TOBEINGINPEOPLE’SNATURALSETTINGSBYREACHINGTHEMVIACOMPUTERSORMOBILEPHONESORDEVICESTHATAREACCESSIBLETOTHEMALMOSTANYTIMEANDANYWHERELEFEBVRE,2009THEEMERGENCEOFNEWMEDIAHASLEDTOAPARADIGMSHIFTINMANYCOMPANIES’MARKETINGPRACTICESFROMATRADITIONALBRANDOR“PRODUCTDRIVEN”APPROACHTOACONTEMPORARY“CUSTOMERDRIVEN”MARKETINGMETHODRUSTETAL,2011THISSHIFTISDUEINLARGEPARTTOTHEPERVASIVEUSEOFNEWMEDIAANDTHECAPABILITYOFNEWMEDIATECHNOLOGIESTOPUTCUSTOMERSANDCOMPANIESINCONSTANTCONTACTNEWTECHNOLOGYANDSOCIALMEDIAAREBYNATURECONSUMERDRIVENUNLIKETRADITIONALMEDIA,CONTENTGENERATEDTHROUGHTHESEPLATFORMSISLARGELYCREATED,MAINTAINED,ANDSHAREDBYANDAMONGCONSUMERSANDCOMMUNITIESBERNHARDTETAL,2011THESEWIDESPREAD,ELECTRONIC,MULTIDIRECTIONALINTERACTIONSHAVENOTBEENWITNESSEDPREVIOUSLYANDGIVECONSUMERSTHEABILITYTODIRECTLYCOMMUNICATETHEIRPRODUCTNEEDSANDFEEDBACKTOCOMPANIESTHATAREEAGERTOLISTENMANGOLDANDFAULDS,2009MOREOVER,NEWMEDIAAREOFTENPERCEIVEDBYCONSUMERSASMORETRUSTWORTHYSOURCESOFINFORMATIONFOR“PRODUCTSANDSERVICESTHANCORPORATESPONSOREDCOMMUNICATIONSTRANSMITTEDVIATHETRADITIONALELEMENTSOFTHEPROMOTIONALMIX”FOUX,2006,P389INSHORT,SOCIALMARKETERSCANNOWLEVERAGENEWMEDIATOENGAGELARGENUMBERSOFCONSUMERSMOREDEEPLYANDCLOSERTOTHERIGHTPLACEANDRIGHTTIMETHANEVERBEFORENEWMEDIAWHILEDEFINITIONSOFNEWMEDIAVARY,GENERALLYTHESEINCLUDEELECTRONICCOMMUNICATIONCHANNELSSUCHASSOCIALNETWORKINGWEBSITES,BLOGS,CHATROOMS,DISCUSSIONBOARDS,ANDCUSTOMERSERVICERATINGWEBSITES,ALLOFWHICHCANPROVIDEAMPLEOPPORTUNITIESFORTWOWAYCOMMUNICATIONBETWEENMARKETERSANDCONSUMERSUSEOFNEWCOMMUNICATIONMEDIABYCONSUMERSHASPROLIFERATEDINDEVELOPEDCOUNTRIES,OFFERINGUNPRECEDENTEDOPPORTUNITIESTOEXTENDTHEREACHANDENGAGEMENTOFSOCIALMARKETINGEFFORTSINOTHERPARTSOFTHEWORLD,USEOFCERTAINNEWMEDIASUCHASMOBILEDEVICESISALSOGROWING,PROVIDINGNEWWAYSTOENGAGEWITHCONSUMERSAROUNDSOCIALISSUESINDIVERSECONTEXTSMANYNEWMEDIA,SUCHASCELLPHONESANDMOBILEDEVICES,AREALSOLINKEDTOBOTHGEOGRAPHYANDTIMECOMMUNICATIONTHROUGHTHESEWIRELESSCHANNELSCANBELINKEDTOCONVERSATIONSANDEVENTSOCCURRINGINLIVESOCIALNETWORKSATASPECIFICTIMEANDPLACETHE
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