简介：摘要：当前社会经济迅速发展，人们对于用电需求逐步提高，电力企业也朝着智能化、自动化的方向发展。电力设施是维系电力系统工程的重要设备，在运行上具备高危险性。在电力设施保护工作中存在一些问题，比如缺乏主动管理电力设施的意识，缺乏协调能力，技术应用效果较低，容易受到诸多因素的影响，宣传力度不够，行政执法不到位等，因此要针对现状进行研究，做好电力设施的保护工作，加强电力设施的巡视工作，重视各部门之间的配合沟通交流，加大人为破坏电力设施的查处力度，健全电力设施保护组织机构，进一步促使我国电力系统得到长远有效的发展。

简介：

简介：

简介：Intheair-waterquantumkeydistribution（QKD）,theirregularseasurfacehassomeinfluenceonthephotonpolariza-tionstate.Thewindisconsideredasthemainfactorcausingtheirregularity,sothemodelofirregularseasurfacebasedonthewindspeedisadopted.Therelationshipsofthequantumbiterrorratewiththewindspeedandtheinitialincidentanglearesimulated.Therefore,themaximumsecuretransmissiondepthofQKDisconfirmed,andthelimita-tionofthewindspeedandtheinitialincidentangleisdetermined.Thesimulationresultsshowthatwhenthewindspeedandtheinitialincidentangleincrease,theperformanceofQKDwillfalldown.Undertheintercept-resendattackcondition,themaximumsafetransmissiondepthofQKDisupto105m.Torealizesafecommunicationsinthesafedivingdepthofsubmarines（100m）,theinitialincidentangleisrequestedtobenotexceeding26~,andwiththeinitialincidentan~leincreased,thelimitationofwindspeedisdecreased.

简介：~~

简介：AbstractIn order to effectively implement the Tianjin Biosecurity Guidelines for Codes of Conduct for Scientists, biosecurity awareness-raising and education are essential because if these are not in place scientists will not understand the need for biosecurity codes of conduct. In an effort to assist in the implementation of the guidelines, a small-scale survey was carried out in early 2022 of biosecurity awareness-raising and education projects that have been developed over the last two decades to discover what resources and experience have been accumulated. It is argued that the survey demonstrates that much of what is needed to implement the guidelines effectively has been developed, but that there are specific deficiencies that need to be remedied quickly. In particular, an updated teaching resource covering the core issues related to the Biological and Toxin Weapons Convention (BTWC) and the problem of dual use in scientific research needs to be made widely available and translated into at least the six official United Nations (UN) languages. Additionally, more specialists from the Humanities with expertise in ethics need to become involved in biosecurity awareness-raising and education activities. While advantage should be taken now of the available national, regional and international networks of people involved in related activities, it is suggested that in the longer term cooperation in biosecurity awareness-raising and education will benefit from the development of an equivalent organisation to the International Nuclear Security Education Network (INSEN) organised through the International Atomic Energy Agency (IAEA).

简介：

简介：

简介：Researchonnewtypesofcastables,pre-castassemblypartsandthermalinsulationmaterialswithgoodresistancetowear,thermalshockanderosion,andlowthermalconductivity,wasdonetosolveproblemsofhighsystemenergyconsumption,crackingandspallingofpartialliningandmismatchoffurnacetopmaterialandhangingmaterialandsoon,causedbyunreasonabledesignofChina'sAl(OH)3dilutephasefluidizedbedroastingfurnacelining.Severaldifficultproblemssuchasthematchingofdifferentmaterials,preservationofexpansionjointsamongdifferentzonesandreasonablemechanicaldistributionofliningweresolved.'Integratedfurnace'conceptwasestablishedincludingrefractoriesR&D,liningstructuredesign,constructionoptimization,furnacewarmingtechnology,initialoperationandliningmaintenancetechnology.Thekeytechnologiesofhigh-efficiencyandenergy-savingforfurnacesweredeveloped.TheseachievementshavebeenappliedtoChina'sAl(OH)3dilutephasefluidizedbedroastingfurnacestoreduceenergyconsumptionby1000MJpertonalumina,enhancethecapacityandreducetheexhaustgasemission.

简介：DuringtheEighthFive-YearPlanperiod,ShaanxiProvinceintensifiedtherestructuringofinvestmentandmacro-controlinfixedassetsinvestmentbyimplementingthepolicyof"limitingtotalamount,readjustingstructure,rectifyingorderandimprovingefficiency".ThewholeprovincerealizedRMB110billioninfixedassetsinvestment,(includingRMB86.5billionbystate-ownedunits,RMB14.23billionthroughloansfromtheconstructionbank,makingup16.5percent),RMB67billionmorethanintheSeventhFive-YearPlanperiod,withanannualincreaseof26.5percent.Thankstothesupport,agroupofmedium-to-largeandkeyprojectshavebeenputinto

简介：SPSS13.0wasusedtoprocessthedataofthe1-6batchofkeyculturalrelicconservationunitspromulgatedbytheStateAdministrationofCulturalHeritageofChina;andmulti-elementevaluationmethodwasusedtocalculatethecompositedistributionindex.ThespatialdistributionofculturalrelicsofprovincesinChinacanbedividedintofourgrades,namely:veryrichareas,richareas,poorareasandverypoorareas;thearticleanalyzesthecharacteristicsofculturalresourcesinspatialandtemporaldistribution.Thepaperholdsthat(1)thedistributionofChina'sculturalrelictourismresourcesisrelativelyconcentrated,differentsharplyfromregiontoregion,withmoreHannation'sheritage,lessrelicsoftheethnicminorities;(2)Henan,Hebei,Shaanxi,ShanxiProvincearethemainregionswithheavydistributionofculturalresources;(3)relicsappearedinspecifictimeperiodsinChina'shistory.MingandQingDynasties,Sui,TangandFiveDynasties,Song,LiaoandJin,theWesternHan,ShangandZhoudynasties,theNewStoneAgearethemajorperiodsproducingmoreculturalrelics.Thispaperalsoanalyzesrelationshipsoftheemergenceofculturalrelicswithproductiontechnology,specifichistoricalprocess,specificgeographicallocation,politicalsystem,religion,nationalculture,customs,architecturalstylesandtechniquesofthetraditionalculturaleducationalsystem.Finally,thepaperdiscussesthedevelopmentandprotectionofheritage.

简介：Bystudyingthetraditionalspectralreflectancereconstructionmethod,spectralreflectanceandtherelativespectralpowerdistributionofalightingsourcearesparselydecomposed,andtheorthogonalpropertyoftheprincipalcomponentorthogonalbasisisusedtoeliminatebasis;thenspectralreflectancedataareobtainedbysolvingasparsecoefficient.Aftertheoreticalanalysis,thespectralreflectancereconstructionbasedonsparsepriorknowledgeoftheprincipalcomponentorthogonalbasisbyasingle-pixeldetectoriscarriedoutbysoftwaresimulationandexperiment.Itcanreducethecomplexityandcostofthesystem,andhascertainsignificancefortheimprovementofmultispectralimageacquisitiontechnology.

简介：Withparametricdown-conversionsources(PDCSs),thenonorthogonaldecoystateprotocolbasedononevacuumandtwoweakdecoystatesispresented.ThedetectioneventsonBob'ssidearedividedintotwogroupsdependingonwhetherAlicegetsatriggerornot:triggeredcomponentsandnontriggeredcomponents.Thetriggeredcomponentsareusedtoestimatethefractionsanderrorratesofsingle-photonandtwo-photonpulses,andthenthefinalsecurekeyrateisdeduced.Besides,bothtriggeredandnontriggeredcomponentsareusedtodeduceamoreaccuratevalueofthekeygenerationrate.Thesimulationofthefinalkeygenerationrateovertransmissiondistanceshowsthatthefirstmethodcanobtainakeygenerationrateclosetothetheoreticallimitoftheinfinitedecoystateprotocol,whilethesecondmethodisbetter.

简介：随着多宗网络银行犯罪事件的发生，网上银行安全越来越被人重视，如何才能加强系统应用的安全性，提升人们对网上银行的信任度，成为网上银行业务中最亟待解决的问题，本文为读者带来指纹U-KEY，以供大家参考。

简介：~~

简介：Background:Accelerometershavebeensuggestedtoprovideadditionalinformationduringthe6-minwalktestwhichmaybeusefulinevaluatingchangesinfunctionalexercisecapacity.TheaimofthestudywastoidentifywhethertheadditionalinformationmeasuredbytheMyWellnessKey~(TM)(MWK)accelerometerduringatreadmill6-minwalktest(t-6MWT)wasrelatedtocurrentlyusedoutcomemeasures.Methods:Fifteenparticipants(9males,6females)performedaself-pacedt-6MWT.RespiratorygasanalysisandwalkingdistanceweremeasuredwhilstwearingtheMWK.Results:Asignificantcorrelationwasestablishedbetweenactivitycountsand6-minwalkdistance(6MWD)(r=-0.847,p<0.001)yetnot6-minwalkwork(6MWW)(r=-0.337,p=0.220).EnergyexpenditureestimatedbytheMWKwasstronglycorrelatedto6MWW(r=0.938,p<0.001)butnot6MWD(r=0.477,p=0.072).TheMWKsignificantlyunderestimatedenergyexpenditure(36.73,CI=33.9-39.7kcal)comparedtogasanalysis(54.35,CI=46.2-61.4kcal)demonstratingpooragreementbetweenthetwoanalyses(Bias=-17.61kcal,Limitsofagreement=-37.4,t2.2kcal).Measurementoftimespentundertakinglight,moderate,andvigorousphysicalactivitywasnotsignificantlydifferent(p>0.05)betweentheMWKandgasanalysis.Conclusion:EstimatedenergyexpenditureprovidedbytheMWKwasstronglycorrelatedto6MWW;however,MWKunderestimatedenergyexpenditureasmeasuredbygasanalysis.TheMWKmayprovideoutcomedatathatsupplementthosecurrentlyprovidedbythe6MWDforfunctionalcapacityassessmentduringthet-6MWT.

简介：摘要作为自然生态系统中的一部分，林业资源不仅有助于维持生态系统平衡，确保其稳定发展，它也可以有效的促进自然保护区的发展和建设工作。为了充分发挥林业资源的作用和价值，确保林业资源的结构完整，国家和政府需重视对自然保护区的建设工作，并且加大投资力度，完善法律结构，不断增强人们的环保意识和节约意识，积极引进林业产业，开发林业产业，提升林业资源的经济效益，从而实现对自然保护区林业资源的保护和利用，最终促进其可持续发展。

简介：摘要：林业发展对于我国有着极为重要的意义，不仅可以美化环境，提升空气质量，更有着极为重要的经济价值，其经济效益、生态效益和社会效益十分巨大。近年来，我国不断加大对林业生态和天然林保护的重视程度，提出可持续发展战略，来全面贯彻落实科学发展观，降低经济发展给生态环境带来的压力，加大对林业生态和天然林的保护力度，来真正实现林业资源的可持续发展，最大限度的发挥其经济效益、社会效益和生态效益。

简介：摘要：随着可持续发展理念迅速深入发展，人们环保意识也日益增强，因而应重视发展经济过程中给天然环境带来的影响。林业资源是尤为重要的自然资源，有助于改善生态环境，应积极做好林业生态和天然林保护，促进林业资源可持续发展，不断的带来经济效益和生态效益。

简介：摘要：自然保护区在生态及经济方面的贡献较为显著，它不仅可以为人们提供清新自然的居住环境，而且给人类带来了巨大的经济效益，他们是我们赖以生存的资源，为了进一步加强林业资源的保护和利用，我国纷纷建立了自然保护区。但在自然保护区林业资源保护和利用过程中，受到多种因素的限制，其现状仍不甚理想。基于此，必须要采取有效的措施，全面加强自然保护区林业资源的保护和利用。本论文以自然保护区林业资源为研究切入点，对其保护现状进行了深入的剖析，并在此基础上提出了相应的解决措施。