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  • 简介:Physicalinactivityhasbeenidentifiedasoneoftheleadingcausesofmanychronicdiseasessuchascardiovasculardisease,type2diabetes,andobesity.Technologysuchasvideogamesplaysacomplicatedroleinphysicalinactivity—muchlikeadouble-edgedsword.Traditionally,videogameshavecontributedtotheepidemicofphysicalinactivityandhavebeen

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  • 简介:Firegrowthmodelcanpredictfirebehavior,whichcanguidefirefightingactivitiesandassessesfiremanagementpolicies.Thispaperanalyzedthemainfactorsaffectingfiresimulation,andsummariedthecurrentgrowthmodelsincludingempirical,semi-empiricalandphysicalmodels.Thewidelyusedfiregrowthsimulationsoftwareswereoutlinedinthepaper,whichincludePrometheus,BehavePlus,Farsite,etc.Finally,thepaperdiscussedthelimitationsoffiregrowthmodelsandtheirfuturedevelopment.

  • 标签: FOREST FIRE FIRE GROWTH MODEL FIRE
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  • 简介:Chinaisnotrichinnaturalforestsources.Owingtonaturalandhistoricalfactors,forestfireshavelongbeenfrequentingChina.Forestfirepreventionisthemostimportantofall.Forestfirepreventionandcontrollinghavelongbeenheldasaveryimportantfactorinourecologicalplans.Takingchina'sspecialgeographicallocation,topography,climateandthedistributionofforestsourcesintoconsideration,wehaveeveryreasontobelievethatforestfiresinChinahavetheirownspecialenv...

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  • 简介:Forestfiresoccurrenceisinfluencedbymanyfactors,suchasinter-annualweathervariationsandregionalfueldistributions.Firesoccurrenceindifferentforestregionhasdistinctspatialandtemporalcharacteristics.ThepaperstudiedthenaturalforestfireenvironmentinNortheasternChina,aswellasforestfiresoccurrence,burnedareaandfireseasonsinNortheasternForestRegion.Theresultshowsthatmorethan50%ofannualburnedareaoccurredinNortheastChinaForestRegion.Mainfireseasonsintheregionarespringandautumn.Firesoccurrenceinspringislargerthanthatinautumn.Therearefewfiresinsummer.Theauthors'suggestionsforfiremanagementdepartmentaretoemphasizethefuelmanagement,improvetheroadsconditions,andenhancethefirescontrolability.

  • 标签: 森林 火灾环境 中国 火灾预防
  • 简介:Inrecentyears,manyseriousforestfiresoccurredinpreciousPinuspumilaforestsinDaxing'anlingMountainsofHeilongjiangProvinceandInnerMongolia.Butuptonow,thereisstillalackofproperunderstandingoffireoccurrenceenvironmentsinP.pumilaforests.Inpresentpaper,weinvestigatedandstudiedthefireoccurrenceenvironments.TheresultsshowedthatfiresinP.pumilaforestshadtheirownspecialfireenvironments.Abundantfuel,droughtweather,drythunderandhighaltitudeterrai...

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  • 简介:Thefirecauseswaterpollution,airpollutionandtoxicgaspollutiontooursurroundingenvironment,anditseriouslyaffectsourlivingenvironment.People’sawarenessofenvironmentalprotectionisincreasingyearbyyear,andenvironmentalpollutioncausedbythefireisalsobeingcontrolled.Thisarticlebrieflyintroducesthefireaccident’simpactontheenvironment,thesystematicanalysisofthefireaccidentinthesourceofpollutionanditsharm.Combinedwiththeexistingwayoffirefightingandrescuefireaccident,thepollutioncontrolmethodisproposed.

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  • 简介:Visualfiredetectiontechnologiescandetectfireandalarmwarningsearlierthanconventionalfiredetectors.Thisstudyproposesaneffectivevisualfiredetectionmethodthatcombinesthestatisticalfirecolormodelandsequentialpatternminingtechnologytodetectfireinanimage.Furthermore,theproposedmethodalsosupportsreal-timefiredetectionbyintegratingadaptivebackgroundsubtractiontechnologies.Experimentalresultsshowthattheproposedmethodcaneffectivelydetectfireintestimagesandvideos.ThedetectionaccuracyoftheproposedhybridmethodisbetterthanthatofCelik’smethod.

  • 标签: 火灾探测技术 序列模式 视觉 检测图像 火灾探测器 探测方法
  • 简介:Threeessentialfactorsofforestfire(firesource,environment,andlitter)weretakenasthepointofview,andhasapproachedtheforecastmethodofforestfireintropicalareaofsouthwestChinainamacroscopicscale.Thisstudysupportedbymathematicalmethodwasfromanewangle.Forexample,intheaspectofforestfireforecast,ithasbeenthoughtoverthatmostforestfireisartificialfire,whichhaslotsofrandomness.SoitcouldbestudiedinakindofMarkovrandomprocesses.Inthe...

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