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500 个结果
  • 简介:原子磁性的时刻是一个重要物理变量并且为原子模型的紧测试用作一个有用工具。为过去的十年,功能的理论和它的延期被证明了在描述原子地面状态成功并且激动的covariant密度说性质。然而,一个长期的问题是它的失败预言磁性的时刻。这篇文章在covariant密度以内在对原子磁性的时刻的描述考察最近的进步功能的理论。特别地,磁性的时刻球形奇怪--有二倍地关上的壳核心加或减一个核子的A原子核并且使变形奇怪--一原子核。

  • 标签: 原子模型 磁性 密度 物理变量 原子核 核子
  • 简介:Thepresentworkaimstoestablishafractional-ordergeneralizedthemoelasticdiffusiontheoryforanisotropicandlinearlythermoelasticdiffusivemedia.Tonumericallyhandlethemulti-physicsproblemsexpressedbyasequenceofincompletedifferentialequations,particularlybyafractionalequation,ageneralizedvariationalprincipleisobtainedfortheunifiedtheoryusingasemi-inversemethod.Innumericalimplementation,thedynamicresponseofasemi-infinitemediumwithoneendsubjectedtoathermalshockandachemicalpotentialshockisinvestigatedusingtheLaplacetransform.Numericalresults,i.e.,non-dimensionaltemperature,chemicalpotential,anddisplacement,arepresentedgraphically.Theinfluenceofthefractionalorderparameteronthemisevaluatedanddiscussed.

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  • 简介:Ashortoverviewofthetheoryofaccelerationofthinfoilsdrivenbytheradiationpressureofsuperintenselasersispresented.Asimplecriterionforradiationpressuredominanceatintensitiesaround5×1020Wcm-2isgiven,andthepossibilityforfastenergygainintherelativisticregimeisdiscussed.

  • 标签: LIGHT SAIL radiation pressure laser–plasma ACCELERATION
  • 简介:Thepapertriestoexplorecirculareconomyfromtheviewpointofthesystemtheory.Circulareconomyisakindofcomplicatedeconomicactivity,anditisawhollynewecotypeeconomyproposedbyWesterncountriesaftertheyhadsummedupmanyexperiencesandlessonsfromtraditionaleconomy.Itisanentiretyandhasmanylayers.Itkeepsanopenanddynamicbalance.Becausethesystemtheoryisthetheoreticalfoundationofcirculareconomy,weshouldsystemicallyanalyzeandstudycirculareconomyfromthemacroscopicview,correctlygraspitsoperationallaws,improveitsservicefunctions,andrealizehumanbeings'sustainabledevelopment.Thepaperintroducesthecontentandgeneralcharacteristicsofthesystemtheoryandtheideaofcirculareconomy.Thenitanalyzescirculareconomybasedonthesystemtheory.Thepaperconcludesthattheintegrationofcirculareconomyandthesystemtheorycanpromotethefunctionsofcirculareconomy.

  • 标签: 循环经济 发展模式 系统理论 可持续发展
  • 简介:Basedonthemeaningofeconomictheoryaswellasanalysisofrelevantcharacteristicsofwatershedenvironmentalmanagement,awatershedenvironmentalmanagementframeworkwillbecreated,withbuildingsystemsoftheory,principles,methods,andsupportingmeasures.Throughthegeneralstructure,thewatershedenvironmentalmanagementsystemdesigncanbeexploredtooptimizetheallocationofresourcesandachievecoordinateddevelopmentofwatershedeconomicgrowthandenvironmentalprotection.

  • 标签: ECONOMIC THEORY WATERSHED ENVIRONMENTAL MANAGEMENT FRAMEWORK
  • 简介:Noether’stheoremrevealstheinnerconnectionbetweentheconservationlawsandthedynamicalsymmetryofdynamicalsystems.Intherecenttwent...

  • 标签: analytical MECHANICS UNILATERAL CONSTRAINT conservation law
  • 简介:AbstractThe developmental origins of health and disease theory states that environmental stresses during the early stages of life influence health and risk of developing non-communicable diseases throughout the lifespan of an individual. Developmental plasticity is thought to be a possible underlying mechanism. Here, I discuss a contrasting but complementary genetic hypothesis regarding the developmental origins of health and disease theory: crosstalk between the genomes of the parents and offspring is responsible for shaping and adapting responses to environmental stresses, regulating early growth and predisposition to non-communicable diseases. Genetic variants that are beneficial in terms of responses to early life stresses may have pleiotropic detrimental effects on health later in life, which may change the allele frequencies driven by selection on a population level. Genetic studies on the cohort of children born after assisted reproduction could provide insight regarding the genetic mechanisms of the developmental origins of health and disease theory.

  • 标签: assisted reproduction DOHaD genetic pleiotropy non-communicable diseases positive selection
  • 简介:Theinternationalsystemreferstothewholeoftheinteractingandstablerelationshipformedbyactorsofinternational

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  • 简介:传统的地震数据采样跟随Nyquist采样定理。在这份报纸,我们介绍压缩察觉到的理论(CS),突破传统的Nyquist采样定理的限制,显示进用随机的undersampling的无害的支离破碎的随机的噪音的常规undersampling的协调别名,并且有效地把重建问题变成一个简单得多的降噪问题。我们介绍设计到凸的集合(POCS)上在数据重建的算法处理,在重复使用指数的腐烂阀值参数,并且修改执行在时空域的前面、反向的变换的传统的重建进程。我们建议使用在空间领域提交并且逆行变换的一个新方法。建议方法使用更少的计算机记忆并且改进计算速度。我们也分析antinoise和建议方法的抗混叠能力,并且比较2D和3D数据重建。理论模型和真实数据证明建议方法是有效的并且实际重要性,它能重建错过踪迹并且减少复杂数据的探索费用获得。

  • 标签: 三维数据重建 POCS 地震 叶理 采样定理 奈奎斯特
  • 简介:ThebasiccategoriesoftheChinesesocialisthumanrightstheoryconsistoffourelements,namely,humanrightshistory,humanrightsconcepts,humanrightsattributesandhumanrightsprotection.Thecategoryofthehumanrightshistoryincludesancientnotionsofhumanrights,classicalhumanrightstheory,MarxisthumanrightstheoryandthesinicizedMarxisthumanrightstheory.Thecategoryofhumanrightsconceptsincludesthesubjects,contents,forms,classification,originandessenceofhumanrights.Thecategoryofhumanrightsattributesincludesuniversalityandparticularityofhumanrights,harmonyandconfrontationbetweenhumanrights,politicalnessanda-politicalnessofhumanrights,indivisibilitybetweenrightsandduties,andconditioningofstatepowerbyhumanrights.Thecategoryofhumanrightsprotectionincludeshumanrightsandsovereignty,humanrightsanddemocracy,humanrightsandtheruleoflaw,humanrightsandproperty,humanrightsdutyholders,andhumanrightseducation.

  • 标签: SOCIALISM with CHINESE characteristics HUMAN RIGHTS
  • 简介:在一系列最近的报纸[1-4]没有,免费的量地理论怎么能用机械原语被导出,被显示出(包括时空,特殊相关性,量子化规则,等等),但是仅仅考虑包含其相互作用的网络满足unitarity,同质,地区,和isotropy的简单原则的量系统的一个可计算的集合的最容易的量算法。这打开了线路到扩大抽象系统的量子论的公理的信息理论上的推导[5,6]包括量域理论。参考axiomatization的固有的分离性质导致量地理论的延期到量细胞的自动机理论,在平常的地理论在自动机的分离结构不能被探查的政体被恢复的地方。简单启发式的争论给组件的规模到普朗克常数规模的A,和组件不是可见的惯常的物理政体是相对论小wavevectors之一。

  • 标签: 元胞自动机 量子场论 自由 量子场理论 狭义相对论 CAYLEY图
  • 简介:Spacesyntaxhasproventhereappearstobeafundamentalprocessthatinformshumanandsocialusageofanenvironment,andtheeffectsofspatialconfigurationonmovementpatternsareconsistentwithamodelofindividualdecisionbehavior.Introducingspacesyntaxtocrowdsimulationwillenablespacestructureguidetherandommovementofthecrowdwithnospecifictargets.Thispaperproposesasimulationmethodofthewanderingcrowd,whichcalculatesthecrowddistributioncorrespondingtothespacethroughspacesyntaxandusesahybridpathplanningalgorithmtodynamicallynavigatethecrowdtoconformtothedistribution.Experimentsshowthepresentedmethodcanobtainreasonableandvision-realisticsimulationresults.

  • 标签: 空间配置 群仿真 法理 路径规划算法 空间句法 模拟方法
  • 简介:Inrecentyears,languagetransferhasbeenattachedgreatimportanceinthestudiesofsecondlanguageacquisitionandteaching.Boththepositiveandnegativetransfershouldbepaidgreatattentionto.Theinfluenceofmothertongueisthecoreaspectinthetransfertheoryofsecondlanguageacquisition.Ontheonehand,ifthesimilaritiesofthetwolanguagescanbefullyutilizedandcanproduceresultsthatfacilitatethesecondlanguageacquisition,theinfluencescanbereferredtoaspositive,andthetransfercanbecalledpositivetransfer.Ontheotherhand,negativetransferexistswhenmothertonguehasinsertedinterferenceswhichmaycauseerrorsinthesecondlanguageacquisitionprocess.Restrictionsmayoccurintheacquisitionprocessofsecondlanguage.

  • 标签: APPLICATION TRANSFER THEORY teaching ABSTRACT SECOND