简介：通过对现有监控模型的分析,结合当前视频技术、计算机网络技术及通信技术的发展,建立了基于B/S模式下的分布式视频监控系统模型,介绍了分布式视频监控系统的设计及实现,详细描述了各个模块的功能,对系统中的关键技术,如视频编码技术、实时传输技术、网络视频流量控制技术等进行了讨论.

简介：讨论了通过以太网作为通信媒介,基于S3C4510B实现网络型防盗报警器的设计思路和系统结构,设计了用DM9161作为以太网物理层的接口电路以及用松本无线高频板作为探测信息的接收端等硬件电路和相应的软件流程,并配以uClinux操作系统对防盗报警器的各种信息进行有效的管理,达到了家居防盗报警的要求.

简介：输气管道发生事故后将导致甲烷大量泄漏,存在发生窒息的危险。文章依据甲烷的体积占比,对标准状态下甲烷的窒息浓度进行了计算,并且对不同温度下的甲烷窒息浓度计算公式进行了推导。确定甲烷的窒息浓度值,利于事故现场用仪器监测甲烷浓度,判断是否有窒息危险;环评事故后果预测时,判断事故发生之后是否会出现窒息浓度,并且确定窒息浓度范围;在环境空气压强不变的情况下,甲烷的窒息浓度值随着环境空气的温度的升高而降低,但二者的关系并不属于线性关系。

简介：0．1米对常人来说，是一个容易被忽略的数据。然而4月19日夜班，在川煤集团达竹公司小河嘴煤矿掘进一队4027掘进工作面，却爆发了一场面红耳赤的算账会。现场作业的该队9班职工和值班队干对O．1米的差距较起了真，这是咋回事？

简介：Afterthe1992UNConferenceonEnvironmentandDevelopmentinRiodeJaneiro,theconceptofsustainabledevelopmenthasbeenwidelyrecognizedallovertheworld.Morethan100countries,includingChina,haveadoptedsustainabledevelopmentstrategiesaccordingwiththeirownsituations.For20years,

简介：Theproblemofclimatechangeisaglobalchallenge.Itiscloselyassociatedwithsocialdevelopmentandhumansurvival,andithasasignificantimpacttoallcountriesonenergydevelopment,economiccompetitiveness,technologicalinnovation,andwayoflife.Inrecentyears,withtherapideconomicdevelopmentinChina,thereisarumorthattherapidgrowthofChina'scarbondioxideemissionoffsettheeffortsoftheinternationalcommunityinreducingemissions,andChinashouldbeartheinternationalresponsibilitycorrespondingtoitssignificantroleingreenhousegasemission,whichobviouslyareunfairandnotobjective.Asthispaperreveals,'Chinaenvironmentresponsibility'thatisthesocalled'Chinaenvironmentthreat'ortheories,ChinahasmadeapositivecontributiontoaddressingtheclimatechangeinthepastandChinawillstillbethebackboneontheprotectionofglobalclimateinthefuture.

简介：7S管理方法起源于日本．在日本叫5S．内容包括整理（SEIRI），整顿（SEITON）、清扫（SEISO）清洁（SEIKETSU）素养（SOYOU）。此5项内容在日文的罗马发音中均以“S”为开头．故简称为5S。5S活动是具体而实在的．不仅让员工一听就懂而且很容易实行．推行5S的目的就是要为员工创造一个干净，整洁，舒适．合理，安全的工作场所和空间环境。

简介：本文以煤层坚固系数(f)为例,对预测瓦斯突出指标的临界值进行分析探讨。

简介：Inrecentyears,carbonemissionshavegraduallyevolvedfromanenvironmentissueintoapoliticalandeconomicone.Carbontariffhasbroughtaboutnewtradebarriersofdevelopedcountries,andinordertoenhancetheindustrialcompetitivenessofdevelopedcountries,itwillproduceunfavorableimpactondevelopingcountries.Concentratedonthemanufacturingindustry,whichisthemostintensivehigh-carbonindustryinChina’sexportstructure,thisarticlestudiestherelationshipbetweencarbontariffpolicyandindustrystructureofexporttradeandbuildsuparelationbetweenclimatechangeandinternationaltrade.First,bymeansofestablishingapartialequilibriummodel,itappliesgeometricanalysisandmathematicalanalysistocomputetheimpactonChina’smanufacturingexporttradeandtheconsequencesoftheintroductionoftheUScarbontarifftoChina’smanufacturingindustrythathasalreadyimposedadomesticshippingcarbontax.Furthermore,withtheapplicationoftheGTAPmodel,itestimatestheoveralleconomicandwelfareeffectsonChina’smanufacturingindustryiftheUSandEuropeintroducecarbontariffbymeansoffourways,andthenanalyzestheinfluenceonChina’smanufacturingindustryexportstructureandsocialwelfareaswell.TheresultshowsthattheintroductionoftheUScarbonimporttarifflowersChina’sexportpriceandexportvolume,andtheimplementationofadomesticcarbontaxjustifiesahigherexportpriceandalowerexportvolumeforChina.However,thedegreeofexportreductionissmallerthanthatundertheeffectoftheUScarbontariff.InthecaseofdevelopedcountriesimposingcarbontariffonChina’senergy-intensiveindustries,suchaschemicalrubberproducts,oilandcoal-processingindustryandpaperindustry,whoseexportwouldbereduced,thenegativeimpactonthepaperindustryistheseverest,whichwilldecreasethepaperindustry’sexportrangingfrom1.79%to6.05%,whereastheotherindustries’exportwillincrease.Anyhow,itwillpromoteChina�

简介：AllsevenemissionstradingpilotsinChinaoperateindependently.Onechallengefacingmostofthemisthelowinclusionthresholdsforenterprisesandthefewtotalcoveredemissions,whichnegativelyinfluencestheeffectsoftheemissionstradingsystems(ETSs).Somepilotsites,suchasGuangdong,Hubei,TianjinandBeijing,haveindicatedtheirwillingnesstolinktheirschemeswithothers.ETSlinkingcouldexpandschemecoveragesandthereforehelptoreducetheoverallcostsofachievingthelinkedschemes’emissionscontroltargets.Linkingcouldalsohelptoaddresstheissuesofcarbonleakageandreducepricefluctuations.Thepotentialbenefitsandfeasibilityoflinkingdifferentpilotsystemsareanalyzedinthisarticle.Thesevenpilotregionsareatdifferentstagesofsocialandeconomicdevelopment,withsignificantdifferencesintotalemissionsandemissionsstructuresaswellascarbonabatementpotentialsandcosts.Throughlinking,more-developedregionssuchasBeijing,ShanghaiandShenzhen,whicharetypicallyconsideredtofacehighermitigationcosts,willhavetheopportunitytoachievetheiremissionscontroltargetsbypurchasingcarbonunitsfromless-developedregions,whichwillearnfinancialrevenuesfromsellingtheunits.Torealizethiswin-winresult,aseriesofpolicyandtechnicalbarriersatboththecentralgovernmentandpilotgovernmentlevelsneedstobeovercome.Establishingaunifiednationalemissionstradingmarketwouldappeartobetheidealsolutiontothesechallenges,butitwilltakeconsiderabletimeandwillnotbetheshort-termsolution.Intheabsenceofaunifiednationalscheme,itisrecommendedthatthecentralgovernmentencouragepilotschemestolink,thatitdevelopscorrespondingnationalpoliciestosupportthelinkingeffortsandthatthepilotschemesthatareintendedtobelinkedcoordinateoncertaindesignelements.Basedonthecoordinatingneed,themajorelementsofanETScanbedividedintofourcategories:elementsthatneedmutualrecognition(capset

简介：I'mverypleasedtobehereatthissidemeeting,China'sGreenTransformation:Efforts,PracticesandFuture,co-sponsoredbyACCA21andUNDP.SincetheUNConferenceonEnvironmentandDevelopmentin1992,peoplearoundtheworldhavemadenumerous

简介：ForChina,greenindustrialrevolutioninducedbyglobalclimatechangeposesnotonlythegreatestchallenge,butalsothegreatestopportunity.IntheperspectiveofChina'sbasicnationalconditions,andespeciallyitsnaturalconditions,China'sgreendevelopmentistheinevitablepathofchoicefortherealizationofsustainabledevelopmentandscientificdevelopment.TheessenceofChina'smodernization2050isgreenmodernization,takingthethree-stepstrategytowardsChina'sowngreendevelopmentandenergyconservationandemissionreduction.Incombinationwiththe12thFiveYearPlan,itsinnovativepositioningis'greendevelopmentplan'.

简介：Producinggoodsandservicesallneedswaterconsumption.Thewaterusedintheprocessofanagriculturalorindustrialproductiscalledthe"VirtualWater"containedinthisproduct.Throughinternationaltrade,water-scarcecountriesandregionscouldpurchasewater-intensiveproducts--especiallyfoods,fromwater-richcountriestobalancetheirwaterdeficitsandachievewatersafety.Chinaisoneofthe13mostwater-deficitcountrieswhosewatersafetyhavebeenseverelychallenged.Thispapergeneralizedtherecentglobalresearchdevelopmentandmadeabriefintroductionaboutthemethodscalculatingvirtualwatercontentinspecificproducts.Asacasestudy,wequalifiedChina'sannualvirtualwaterflowsfromyear2000to2002withtradeincrops,andendedwithsomepolicyadviceforapplicationandpracticeofvirtualwaterstrategy.

简介：TheEU,theUnitedStatesandothereconomies,withtheintentiontoimplementunilateraltrademeasuresBorderCarbonAdjustments,imposeemissionreductionpressureondevelopingcountries.Onceimplemented,themeasureswillhavegreatimpactonChina'sforeigntrade.Usingtheinput-outputtablein2007,thispaperhadanalyzedtheinfluencesonChina'sforeigntradeasawholeandsub-sectorsinthreetaxratesscenarios.TheresultsshowedthatthetarifflevelofChina'sexportswillincreaseby3.6%-6.3%ifthetaxwasleviedonexportsembodiedemissions,andby1.0%-1.7%ifleviedonexportdirectemissions.In2007,theformertotalamountofcarbontaxwasaboutUS$42.6-73.0billion,4timesthatofthelatter.Basedonexportembodiedemissions,sectorslargelyinfluencedwerenon-traditionalenergyintensiveones,suchastextile,etal.Thesesectorsshouldbeencour-agedtocarryoutindustrialupgrading,raisingthevalue-addedofexportgoods,andreducingtheirembodiedemissionsbyreductionofenergyintensity.Takingintoaccountofthecomplexityofdatacollection,thetaxleviedonproductsdirectemissionismoreoperational.Theresultsshowedthatthefivetopsectorsmostaffectedwereotherchemicalmaterials,processingofpetroleumandnuclearfuel,coking,smeltingandrollingofferrousmetalandtextile.Mostofthemwereenergyintensivesectors.Therefore,adjustingexportproductsstructure,andcontrollingtoofastdevelopmentofenergyintensiveindustriesarealsoimportantstrategiesinChina.

简介：Theindustrialsectorisusuallythelargesteconomysectorforcarbonemissionsinmanycountries,whichmadeitthesectorwithgreatestpotentialforcarbonreductionalthoughtheprocessdurationmightbeverylong.StudyingthepotentialofindustrialemissionreductionhasgreatsignificanceinestimatingthecarbonemissionpeakofChinaontheonehand,andadjustingitsstrategyininternationalclimatechangenegotiations.Byemployingtheeconomicaccountingmethod,thisarticleestimatestheemissionreductionpotentialofChina’sIndustrialsectorfortheperiodof2010-2050.Itrevealsthat,taking2030astheyearwhentheemissionreachesthepeak,thetotalreductioncanbe8.38billiontons(bts)fortheperiodof2010-2030,with3.12btsfromstructuralreductionwhile5.26btsfromintensityreduction.Afterwards,reductionwillcontinuewithatotalamountof6.59btsfortheperiodof2030-2050,wherethestructuralreductionaccountsfor2.47bts,andintensityreduction4.115bts.Ifbothindustrialandenergyconsumptionstructuresareimprovedduringtheaboveperiod,thereductionpotentialcanbeevengreater,e.g.theemissionpeakcanarrivefiveyearsearlier(intheyearof2025)andthepeakvaluecandeclinebyabout8%ascomparedtotheoriginalestimation.Reviewingthetrajectoryofemissionchangesindevelopedcountriesindicatesthattheindustrysectorcancontributetotheoverallreductiontargetsthroughthedualwheelsofstructuralreductionandintensityreduction,evenbeyondtheemissionpeak.Thisarticleconcludeswiththefollowingpolicysuggestions.(1)OurestimationontheemissionpeakoftheindustrialsectorsuggeststhatChinashouldavoidanycommitmentearlierthan2030onthetimelineoftheoverallemissionpeak;(2)thegreatpotentialofindustrialemissionreductioncanimprovethesituationofChinainclimatechangenegotiation,wheretheintensityreductioncanserveasanimportantpolicyoption.(3)Reductionpotentialcanbefurtherenhancedthroughtechnologyadv

简介：Aspartofacomprehensiveenvironmentalmanagementsystem,manycountriesestablishemissioncontroltargetsformassemissionsofapollutant.Suchtargetsareoftenthekeyobjectiveofanenvironmentalpolicy,suchasanemissiontradingprogram.InChina,however,itismorethanjustanobjectiveofoneparticularpolicy;ithasbecomeaconceptthathasinfluencedmanynationalenvironmentalpoliciesandactivities.Theobjectiveofthisarticleistoreviewtheimplementationofthetotalemissioncontrolpolicyinthepast10yearsandexploreemergingissuesinitsimplementation.Thearticlehasthreesections:asummaryoftheimplementationexperience,issueswiththedesignandimplementationofthepolicy,andpolicyrecommendations.

简介：

简介：Chinahaswitnessedrapideconomicdevelopmentsince1978,andduringthetime,energyproductionandconsumptiondevelopedatatremendousspeedaswell.EnergyefficiencywhichcanbemeasuredbyenergyconsumptionperunitofGDP,however,experiencedcontinuousdecrease.Theoretically,thechangeofenergyefficiencycanbeattributedtoindustrystructuralchangeandtechnologicalchange.InordertoexplainthetransformationofChineseenergyefficiency,weadoptlogarithmicmeanDivisiaindextechniquestodecomposechangesinenergyintensityintheperiodof1994-2005.Wefindthattechnologicalchangeisthedominantcontributorinthedeclineofenergyintensity,butthecontributionhasdeclinedsince2001.Thechangeinindustrystructurehasdecreasedtheenergyintensitybefore1998,butraisedtheintensityafter1998.Decomposedtechnologicaleffectsforallsectorsindicatethattechnologicalprogressesinhighenergyconsumingindustriessuchasrawchemicalmaterialsandchemicalproducts,smeltingandpressingofferrousmetals,manufactureofnon-metallicmineralproductsandhouseholdcontributearetheprincipaldriversofChina'sdecliningenergyintensity.

简介：Circularagricultureisanessentialwaytorealizethepositiverecyclingofecologyandharmoniousdevelopmentofthecountryconstruction.ThesustainabledevelopmentofBeijing'smountainareasdependsonthebackgroundandorientationofecologicaleconomy.Beijing'smountainareasbeartheresponsibilityofprotectingtheecologicalsafetyofthewholeBeijingdistrictandalsotheexplorationofcircularagricultureinmountainareasisveryimportanttopromotethesustainableuseofagricultureresources.Beijing'smountainareashavepossessedsomepracticalexperienceinrecyclingagriculturedevelopment.Throughsummarizingthedevelopmentmodeandanalyzingthedevelopmentpractice,thearticleputsforwardthreekeysegmentsofpromotingBeijingcircularagriculturedevelopment:strengthenpropagate,developsuperiorityandbuiltmanagementmechanism.

简介：Basedonthetotal-factorenergyefficiencyframework,thispapercalculatesChina'sindustrialenergyefficiencyandCO2emissionsreductionpotentialfrom2000to2009byutilizingthedirectionaldistancefunctionanddataenvelopmentanalysis.Theempiricalresultsshowthat:China'sindustrialoverallenergyefficiencyisrelativelylowerwhiletheemis-sionsreductionpotentialisrelativelygreater,giventheoptimumproductionfrontier.Significantindus-trialdisparitiesofenergyefficiencyandemissionsreductionpotentialexist.Energyefficiencyandemis-sionsreductionpotentialsignificantlyshowdifferenttendenciesofindustrialdynamicvariation.ThispapersuggeststheChinesegovernmentimposedifferentialcarbontaxes,flexiblyutilizecarbonmarketmecha-nism,strengthenenergy-savingtechnologicalR&D,promotetheutilizationofrenewableenergy,andstrengthenenvironmentalsupervisionandregulation,soastoimproveChina'sindustrialenergyefficiencyandreduceCO2emissions.