学科分类
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6 个结果
  • 简介:Compositionistheoperationofreplacingvariablesinapolynomialwithotherpolynomials.Themainquestioninthispaperis:whendoescompositioncommutewithuniversalGroebnerbasiscomputation?Weprovethatthishappensiffthecompositionissinglevariable.ThishasanaturalapplicationinthecomputationofuniversalGroebnerbasesofcomposedpolynomials.

  • 标签: Grobner原理 时间调整 合成物 单一变量 多项式
  • 简介:Inthispaper,westudytheexistenceof0-1universalminimaltotaldominatingfunctionsinagraph.Weestablishaformulationoflinearinequalitiestocharacterizeuniversalminimaltotaldominatingfunctionsandshowthatforakindofgraphswhoseadjacentmatricesarebalanced,theexistenceofuniversalminimaltotaldominatingfunctionscoincideswiththatof0-1ones.Itisalsoprovedthatforgeneralgraphs,theproblemoftestingtheexistenceof0-1universalminimaltotaldominatingfunctionsisNP-hard.

  • 标签: 最小全优势函数 平衡 NP难 通用MTDF 矩阵
  • 简介:Healthcareconsumersnolongerwanttobepassivereceiversoftreatmentandcare,theywanttobetohealthinformation,thankslargelytotheInternet,andactivehealthconsumerorganizationshaveprovidedconsumerswithenablingindependenthealthinformation.Individualconsumersarealsomorewillingtoenterintoadialogue,participateandinfluencedecisionsconcerningtheirowncare.Atthesametimetheconsumerrolebecomesmorediverse.Populationsinmanycountriestodayareculturally,socially,anddemographicallydiverse.Understandingconsumerdiversityisoneofthegreatestchallengesfacinghealthcareproviders.Thereisariskthatthequalityofhealthcareprovidedtoconsumerscanvarydependingontheskillsoftheprofessionalstoruneintothevaluesandpreferencesoftheindividualconsumer.Healthcareprovidersneedtolistentoandincorporateconsumers'experiencesintotheirhealthserviceofferingsinnewandcreativeways.Theyneedtoengageinadialoguewithvariousconsumergroupsusingmultiplechannels.Thereisaneedforanewbusinesslogic,whichwouldstructurallyhelptheproviders,onanindividualbasistodealwithmoresophisticatedhealthcareconsumers.Thisisareviewpaperandprovidesaframeworkandasetofstrategiesfordealingwithhealthconsumerdiversity.Wedrawonthreeinterrelatedtheories-opensystemstheory,servicemanagementresearchandtheconceptofconsumersegmentationtounderstandhealthcareconsumers'attitudesandbehaviour,andtheirexpectations.

  • 标签: HEALTH consumers CONSUMER diversity culturally diverse
  • 简介:Thispaperdealswiththeissueofprioritysettinginhealthcareunderuncertaintiesabouttheseverityoftheillnessandtheeffectivenessofmedicaltreatment.Weexaminetheeffectofadiseaseuncertainty(atreatmentuncertainty)ontheallocationofhealthcareresourcesinthepresenceofatreatmentrisk(adiseaserisk)andidentifypreferenceconditionsunderwhichthesocialplannerallocatesmoreresourcestohigherriskpopulation.Weallowforthesimultaneouspresenceoftworisksandinvestigatethejointeffectoftwo-sourceuncertaintiesonhealthcareallocationwhenthetworisksareeithersmallorpositivelyquadrantdependent.Theeffectofinequalityaversiononhealthcareallocationisalsoanalyzedbyintroducinganequityweightingfunction.Ourworkextendsthepreviousmodelofhealthcareprioritytotwo-riskframeworkandprovidesnewinsightsintotheproblemofhealthcaredecisionmakingunderuncertainty.

  • 标签: PRIORITY SETTING health care management RISKS
  • 简介:Recentdevelopmentsincomputationalsciencesandcomputermodelinghaveallowedemergencypreparednessexercisestoincludesimulationmodelsassupportingtools.Thesesimulationmodelsaregenerallybuiltforpredictingtemporalandgeographicpatternsofdiseasespread.Howeversoleuseofsimulationmodelsinexercisedesignfallsshortintermsofincorporatingpolicydecisionmakers'preferencesintodecision-makingprocesses.Inthispaper,ageneralframeworkforexercisingpublichealthpreparednessplanswithadecisionsupportsystemispresentedtointegrateestimationofkeyepidemiologicalparameterswithasystemdynamicsmodelofanoutbreak.Amulti-criteriadecisionmakingframework,anAnalyticalHierarchyProcessmodel,isthendevelopedandintegratedwiththesimulationmodeltohelppublichealthpolicymakersprioritizetheirresponsegoalsandevaluatemitigationstrategiesinatable-topexerciseenvironment.

  • 标签: 系统动力学模型 多准则决策 模型评估 公众健康 计算机模拟 流感