简介：FaststepwiseproceduresofselectionofvariablesbyusingAICandBICcriteriaareproposedinthispaper.Weshalluseashortname"FSP"forthesenewprocedures.FSParesimilartothewell-knownstepwiseregressionproceduresincomputingsteps.ButFSPhavetwoadvantages.OneoftheseadvantagesisthatFSParedefinitelyconvergentwithafasterrateinfinitecomputingsteps.AnotheradvantageisthatESPcanbeusedforlargenumberofcandidatevariables.InthispaperwealsoshowsomeasymptoticpropertiesofFSP,andsomesimulationresults.

简介：Itisalreadyknownthatthereareseveralnonlinearitycriteriasuchasalgebrajcdegree,nonlinearity,distancetolinearstructures,correlationimmune,propagationcriterion,differentialuniformity,whichareusedtocheckwhetheracryptographicfunctionisweakornot,inthispaperwewilldiscussthesecriteriafromavaluationpointofview,andconsiderthelargesttransformationgroupwhichleaveacriterioninvariant,whichisnameditssymmetrygroup.itcanserveasawayofcoparingthestabilityofnonlinearitycriteriaundertheactionofinvertibletransformations.

简介：

简介：无

简介：ＭｕｌｔｉｐｌｅＣｒｉｔｅｒｉａＧａｍｅｓ－ＴｈｅｏｒｙａｎｄＡｐｐｌｉｃａｔｉｏｎｓ￥ＡｎｄｒｚｅｊＰ．Ｗｉｅｒｚｂｉｃｋｉ（ＩｎｓｔｉｔｕｔｅｏｆＣｏｎｔｒｏｌａｎｄＣｏｍｐｕｔａｔｉｏｎＥｎｇｉｎｅｅｒｉｎｇ，ＷａｒｓａｗＵｎｉｖｅｒｓｉｔｙｏ...

简介：Mechanicalandelectricaldamagesareintroducedtostudythefracturemechanicsofpiezoelectricceramicsinthispaper.Twokindsofpiezoelectricfracturecriteriaareestablishedusingthemethodofleastsquarescombinedwithadamageanalysisofthewell-knownpiezoelectricfractureexperimentsofParkandSun's.Oneisbasedonalinearcombinationofthemechanicalandelectricaldamagesandtheotherontheirnonlinearcombination.WhenthecombineddamageDisuptoitscriticalvalueDc,piezoelectricfractureoccurs.Itisfoundfromthequalitativecomparisonofthenumericalresultswiththeexperimentaldatathatthenonlinearlycombineddamagefracturecriterioncangiveabetterpredictionofpiezoelectricfracture.Anditisconcludedfromthenonlinearlycombineddamagefracturecriterionthatanegativeelectricfieldimpedesfracturewhereastheeffectofapositiveelectricfieldonfracturedependsonitsmagnitude.

简介：无

简介：在这份报纸，我们与不可压缩的条件为3DMHD方程的答案考虑整齐标准。由使用一些古典不平等，我们分别地以速度地和磁场的一个部件在某些足够的条件下面获得三维的MHD方程的强壮的答案的整齐。

简介：Inthepresentpaper,thegraphicalmethoddeterminationofoptimalweldingparametersofGMAWisdescribed.Somequalitycomplexcriteriathataretheratioofweldsizeshavebeenproposed.Thesecriteriaallowoptimizingtheshapeoftheweldmetalzone,reducingthelikelihoodofhotcracksformation,andreducingthestressconcentrationoftheweldatthetoe.Intheproposedmethodology,theearlierdescribedequationsconnectingtheweldingparametersandthewelddimensionsofmildandlow-alloysteelsareexplored.Determinationoftheoptimalweldingparametersiscarriedoutgraphicallytakingintoaccountthevarianceoftheweldingparameters.Anexampleofusingtheproposedmethoddestinedtodeterminetheoptimumweldingparametersisprovided.Itisshownthatitsaccuracyissufficientlygoodforapracticalapplication.

简介：Infiniteelementanalysisoftransienttemperaturefield,itisquitenotoriousthatthenumericalsolutionmayquitelikelyoscillateand/orexceedtheredsonablescope,whichviolatesthenaturallawofheatconductionForthisreason,weputforwardtheconceptoftimemonotonyandspatialmonotonyandthenderiveseveralsufficientconditionsformonolonicsolutionsintimedimensionfor3-Dpassiveheatconductionequationswithagroupoffinitedifferenceschemes.Forsomespecialboundaryconditionsandregularelementmeshes,thelowerandupperboundsfor△t/△x~2canbeobtainedfromthoseconditionssothatreasonablenumericalsolutionsareguaranteed.Spatialmonotonyisalsodiscussed.Finally,thelumpedmassmethodisanalyzed.Wecreativelygiveseveralnewcriteriaforthefiniteelementsolutionsofaclassofparabolicequationrepresentedbyheatconductionequation.

简介：

简介：AbstractPurpose:Firefighters are exposed to high levels of occupational risk factors, such as safety risks, chemical, ergonomic, and physical hazards that may jeopardize their lives. To overcome these hazards, firefighters must be physically, mentally, and personally fit to work. This study aimed to explore the criteria and factors affecting firefighters' resilience based on stakeholders’ experiences.Methods:This qualitative study was carried out using conventional content analysis. In total, 21 face-to-face interviews were conducted by firefighters who were experienced in the field. The interviews were carried out from July 2019 to January 2020. The data were collected using 3 unstructured interviews and then resumed by 18 semi-structured interviews. Data analysis was done using Graneheim method.Results:The participants had more than 5 years of experience in the field of search and rescue. The extracted codes through data analysis were classified into 3 main categories (individual, organizational, and social factors), 9 sub-categories (mental, physical, occupational, managerial, colleagues-related, equipment-related, environmental, community-related, and family-related factors), as well as 19 sub-sub-categories and 570 codes.Conclusion:Firefighters' personality, physical condition, behavior and psychological characteristics can affect their resilience along with organizational and management factors that play significant role in people's safety. Developing a tool for assessing resilience can help decision makers to have a real depict of firefighters' job qualifications.

简介：Thispaperaddressesthehighdimensionsampleproblemindiscriminateanalysisundernonparametricandsupervisedassumptions.SincethereisakindofequivalencebetweentheprobabilisticdependencemeasureandtheBayesclassificationerrorprobability,weproposetouseaniterativealgorithmtooptimizethedimensionreductionforclassificationwithaprobabilisticapproachtoachievetheBayesclassifier.TheestimatedprobabilitiesofdifferenterrorsencounteredalongthedifferentphasesofthesystemarerealizedbytheKernelestimatewhichisadjustedinameansofthesmoothingparameter.Experimentresultssuggestthattheproposedapproachperformswell.

简介：<正>Inthemostrecentreportofinjurydataon15sportsfromtheU.S.NationalCollegiateAthleticAssociation(NCAA)InjurySurveillanceSystemoveraspanof16years(1988-2004),ankleligamentsprainswerethemostcommoninjury.Residualsymptomssuchasrecurrentsprains,pain,instability,andgivingwayarecommonafteraninitial,acuteligamentsprain.Chronicankleinstability(CAI)isoneofthesecommonproblems,andhasenjoyedincreasedinterestintherecentliterature.However,CAIremainsapoorly-definedandunderstoodcondition.

简介：在许多国家的基础结构设备反复受到了自然或导致人的灾难。国际帮助机构例如统一NationsDevelopment程序(UNDP)，美国帮助国际开发(USAID)，日本InternationalCooperation机构(JICA)和世界存国际帮助开发(IDA)，正在努力在破坏国家的重建帮助。发展机构通常面对选择并且实现在各种各样的部门被需要的相关优先级基础结构工程的问题。通常也在决策进程有几个关键本地播放器。Inmany盒子，这些主要决定制造者有导致冲突并且从而妨碍重建过程的矛盾的目的。响应这种问题，一条有效途径在多重标准决定分析(MCDA)的地以内被开发了，分析层次过程(AHP)，那能在优先考虑工程实现指定目标和目的帮助决定制造者。用AHP途径，当使用这种灵活MCDA技术时，选择基础结构工程的问题系统地被处理。这条途径考虑可能的不确定性和聚会当有技术或历史的数据的缺乏时，差异，和罐头自己使用决定制造者的判断。从国际金融帮助机构的决定制造者，施主机构，政府并且本地社区能利用这条建议途径。

简介：为解决非线性的退化问题的一个有效SQP算法在纸被建议。在算法的每次重复，一个二次的编程潜水艇问题，由介绍一个松变量总是可行，被解决获得一个搜索方向。沿着这个方向的步长度被采用l∞计算通过Armijo类型线搜索的准确惩罚功能计划。算法被证明在温和条件下面全球性会聚。

简介：

简介：在河口和沿海的环境的关键担心之一是超营养作用，它被知道仔细被连接到滋养的丰富。为了控制并且改善表面水，优秀、滋养的标准被建议以便为环境提供参考条件。然而，在中国的滋养的标准的当前的数据集也为表面水或海水被设计，并且作为这，这些不对估计河口水质量合适，特别给唯一的生态系统和河口的动态性质。为了在当前的河口处理这期，浇管理，滋养的标准在中国的东南为一个本地河口被开发了。Jiulong河河口的分割，中国第一通过在2013-2014期间执行的地调查被分析，它导致了他们的不同性质在与咸度的关系描绘的三个片断的描述，水文学，生态系统，等等。从1997～2014的历史的记录然后用统计建模被分析为河口开发候选人营养素标准。分析的这个阶段从1980年代与滋养的地位记录的学习在联合被承担，它被用来建立一个基线参考条件。在片断的溶解的无机的氮(吵闹)的推荐标准价值分别地，Jiulong河河口的，II和III是64，21和14mol/L，为可溶的反应的磷(SRP)的相应价值分别地是0.89，0.76和0.89mol/L。这些价值是，这应该被强调地点依赖者，和那不同结果可以在取决于的另外的地点被完成物理并且一个河口的biogeochemical特征，或甚至在集水以内的一个单个地点。由在Jiulong河河口表明滋养的标准推导的一条可能的方法学的途径和方法，当前的学习将为研究人员提供开始在整个中国在另外的河口为滋养的条件的学习开发更完全的滋养的标准索引的某基本基础，这被希望。

简介：ThispaperanalyzestheseismicityandseismicriskdistributionintheBohaiSea.Basedontheseismicdesignparametersof46platformsintheBohaiSea,astatisticanalysisismadeontheratiosofthepeakaccelerationsfordifferentprobabilitylevels.Inaccordancewiththetwo-stagedesignmethod,aschemeoftwodesignseismiclevelsisproposed,andtwofortificationgoalsareestablishedrespectivelyforstrengthlevelearthquakesandductilitylevelearthquakes.ThroughanalogyandcomparisontotheChineseseismiccodeforbuildings,itisproposedthattheprobabilitylevelforthestrengthandductilitylevelearthquakestakesreturnperiodsof200aand1000～2500arespectively,andwefurtherexpoundedonitsrationality.Finally,thefortificationparametersinthesub-regionsofBohaiSeaareaaregiveninthelightofseismicriskzonationandgroundmotiondivision.Thisarticleisasummaryofexperiencesfrommanyyearsofoffshoreplatformseismicfortificationwork,andanexploratorystudyontheseismicfortificationstandardsofoffshoreplatformsinChina,whichmayprovidesomereferencesfortheestablishmentofthestandard.

简介：Inthecourseofimprovingand/ordesigninganenergysystem,eitherpurelyeconomiccriteria,althoughtheoverridingcriteria,orpurelyenergy-basedcriteria,althoughtheemphasizedcriteria,cannotseparatelyhandlereal-worldsituationsinasatisfactorymanner,Theeconmiceffectivenessandtheenergyefficiencymustbeconsideredsimultaneouslytodemonstratetheconfilictingandnon-commensurablecharacteristicsofthesemultiplecriteria.Aniterativeandinteractiveapproachtoformulatingandsolvingnon-linearmulti-criteriadecisionmakingproblemsfortheanalysisofanenergysystemisproposed.Itallowsthedecisionmaker(DM)tolearnfromtheavailableinformationanddymamicallychangehismind.Criterionfunctioinscanbetreatedasobjectivefunctions,asconstraintsofassomethinginbetweenbytheDM.Afteraseriesofiterationsandinteractiveprocedures,apreferredsolutioncanbemadeamongthenon-inferiorsetsconsideringthermodymamiccriteriaandeconomiccreteriasimultaneously,asimpleexamplefordesignofahestexchangerisusedtoillustratetheprocedure.