简介:Compositionistheoperationofreplacingvariablesinapolynomialwithotherpolynomials.Themainquestioninthispaperis:whendoescompositioncommutewithuniversalGroebnerbasiscomputation?Weprovethatthishappensiffthecompositionissinglevariable.ThishasanaturalapplicationinthecomputationofuniversalGroebnerbasesofcomposedpolynomials.
简介:Inthispaper,westudytheexistenceof0-1universalminimaltotaldominatingfunctionsinagraph.Weestablishaformulationoflinearinequalitiestocharacterizeuniversalminimaltotaldominatingfunctionsandshowthatforakindofgraphswhoseadjacentmatricesarebalanced,theexistenceofuniversalminimaltotaldominatingfunctionscoincideswiththatof0-1ones.Itisalsoprovedthatforgeneralgraphs,theproblemoftestingtheexistenceof0-1universalminimaltotaldominatingfunctionsisNP-hard.
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.
简介:Thispaperdealswiththeissueofprioritysettinginhealthcareunderuncertaintiesabouttheseverityoftheillnessandtheeffectivenessofmedicaltreatment.Weexaminetheeffectofadiseaseuncertainty(atreatmentuncertainty)ontheallocationofhealthcareresourcesinthepresenceofatreatmentrisk(adiseaserisk)andidentifypreferenceconditionsunderwhichthesocialplannerallocatesmoreresourcestohigherriskpopulation.Weallowforthesimultaneouspresenceoftworisksandinvestigatethejointeffectoftwo-sourceuncertaintiesonhealthcareallocationwhenthetworisksareeithersmallorpositivelyquadrantdependent.Theeffectofinequalityaversiononhealthcareallocationisalsoanalyzedbyintroducinganequityweightingfunction.Ourworkextendsthepreviousmodelofhealthcareprioritytotwo-riskframeworkandprovidesnewinsightsintotheproblemofhealthcaredecisionmakingunderuncertainty.
简介:Recentdevelopmentsincomputationalsciencesandcomputermodelinghaveallowedemergencypreparednessexercisestoincludesimulationmodelsassupportingtools.Thesesimulationmodelsaregenerallybuiltforpredictingtemporalandgeographicpatternsofdiseasespread.Howeversoleuseofsimulationmodelsinexercisedesignfallsshortintermsofincorporatingpolicydecisionmakers'preferencesintodecision-makingprocesses.Inthispaper,ageneralframeworkforexercisingpublichealthpreparednessplanswithadecisionsupportsystemispresentedtointegrateestimationofkeyepidemiologicalparameterswithasystemdynamicsmodelofanoutbreak.Amulti-criteriadecisionmakingframework,anAnalyticalHierarchyProcessmodel,isthendevelopedandintegratedwiththesimulationmodeltohelppublichealthpolicymakersprioritizetheirresponsegoalsandevaluatemitigationstrategiesinatable-topexerciseenvironment.