简介：Themagneticimprovisedexplosivedevices(IEDs),alsocommonlyknownasatypeofastickybomb,issimplyconstructeddevicesyetverylethal.Thispaperputsforwardtheideaofanelectroniccompassthatiscapableofsensingthechangeofamagneticfieldgeneratedbyamagnetandtranslatingitintointerpretabledata,whichcouldactasthebaseforthefurtherstudiesandassistindevelopingagreenerautomatedsystemfordetectingthisdevice.Theelectroniccompassisspecificallychosenforreducingpowerconsumptionofsystemsinadditiontothefactthatitisavailableatalowcost.

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简介：摘要在Low-E玻璃使用过程中，由于工程技术人员对其类别、特性、功能、生产方式、辩别方式等知识了解不够全面或者不了解，在材料采购、施工、监理等工作中很难分辩识别，本文对Low-E玻璃的特点、类别及区别、鉴别方法进行阐述

简介：译码性能的涡轮将在为剩余频率和阶段的原因的条件在搬运人抵消的低signal-to-noise比率(SNR)下面承受严肃的降级。在这份报纸，一个改进剩余搬运人频率偏移量评价算法基于upriori概率帮助了(APPA)阶段评价被建议。一起联合反复的涡轮解码器和阶段评估者的一个搬运人同步环被构造，在从涡轮解码器获得的外来的信息被用来帮助反复的阶段评价进程的地方。算法在很低的SNR下面成功地执行的模拟结果表演调节(例如，不到-7.4dB)与大频率偏移量和阶段错误和这的表演，算法离最佳地同步的系统很靠近。

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简介：Au/TbMnO3/YBa2Cu3O7-xcapacitorswerefabricatedonSrTiO3substratesbypulselaserdepositiontechnique,ofwhichelectricpropertieswereinvestigatedinthetemperaturerangefrom25to300K.Bothcurrent-voltagecharacteristicsandjunctionresistanceswithbiasvoltagesshowedremarkabletemperaturedependence,inwhichobviousthermallyexcitedrelaxationprocesseswerefoundbetween150and200K.Atthetemperatureslowerthantheactivationprocess,theleakagecurrentsofthecapacitorswerestudied.Interestingly,athighelectricfield,themechanismoftheleakagewasPoole-Frenkelemission.However,atlowelectricfield,theconductionwasnotOhmic,andideallnJ∝E1/4characteristicswereobserved.Analysisshowedthatthepossibleoriginwasrelatedtotheinherentinhomogeneousnatureofactivationlesspercolatingtransport.

简介：AbstractBackground:Viral pathogens belonging to the order Bunyavirales pose a continuous background threat to global health, but the fact remains that they are usually neglected and their distribution is still ambiguously known. We aim to map the geographical distribution of Bunyavirales viruses and assess the environmental suitability and transmission risk of major Bunyavirales viruses in China.Methods:We assembled data on all Bunyavirales viruses detected in humans, animals and vectors from multiple sources, to update distribution maps of them across China. In addition, we predicted environmental suitability at the 10 km × 10 km pixel level by applying boosted regression tree models for two important Bunyavirales viruses, including Crimean-Congo hemorrhagic fever virus (CCHFV) and Rift Valley fever virus (RVFV). Based on model-projected risks and air travel volume, the imported risk of RVFV was also estimated from its endemic areas to the cities in China.Results:Here we mapped all 89 species of Bunyavirales viruses in China from January 1951 to June 2021. Nineteen viruses were shown to infect humans, including ten species first reported as human infections. A total of 447,848 cases infected with Bunyavirales viruses were reported, and hantaviruses, Dabie bandavirus and Crimean-Congo hemorrhagic fever virus (CCHFV) had the severest disease burden. Model-predicted maps showed that Xinjiang and southwestern Yunnan had the highest environmental suitability for CCHFV occurrence, mainly related to Hyalomma asiaticum presence, while southern China had the highest environmental suitability for Rift Valley fever virus (RVFV) transmission all year round, mainly driven by livestock density, mean precipitation in the previous month. We further identified three cities including Guangzhou, Beijing and Shanghai, with the highest imported risk of RVFV potentially from Egypt, South Africa, Saudi Arabia and Kenya.Conclusions:A variety of Bunyavirales viruses are widely distributed in China, and the two major neglected Bunyavirales viruses including CCHFV and RVFV, both have the potential for outbreaks in local areas of China. Our study can help to promote the understanding of risk distribution and disease burden of Bunyavirales viruses in China, and the risk maps of CCHFV and RVFV occurrence are crucial to the targeted surveillance and control, especially in seasons and locations at high risk.

简介：WeanalyzethreeoneparameterfamiliesofapproximationsandshowthattheyaresympecticinLargrangiansenceandcanberelatedtosymplecticschemesinHamiltoniansensebydifferentsymplecticmapping.WealsogiveadirectgeneralizationofVeselovvariationalprinciplcforconstructionofschemeofhigherorderdifferentialequations.Atlast,wepresentnumericalexperiments.

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简介：Whatistheinternationalorder?ProfessorZhaoXiaochundefineditasthe'standardsandspecificationsestablishedbythemembersoftheinternationalsysteminordertomaintainitsstabilityandnormaloperationaswellcoordinatingandaddressinginternationalaffairs,andactingasaguaranteemechanism,adecision-makingprocessandprovidingrulesofagenda'.ProfessorCaiTuodefinesitasthe'specificnorms,institution,

简介：Themainresultsofthispaperarestatedasfollows.LetRbeanorderringinthesemi-primaryringQ.SupposethatRsatisfiesthemaximalconditionfornilrightidealsofR,Thenwehave(i)ifanidealIofRhasafinitelengthasrightR-module,thenIalsohasafinitelengthasleftR-module;(ii)denotebyA(R)theArtinianradicalofR,andNthenilradicalofR,thenA(R)+N/N=A(R/N),ifRsatisfiesthecommutativecondi-tiononthezeroproductofprimeidealsofB.

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简介：Theinternationalorderisbuiltontheprinciplesofsovereignequality,nationalinterests,greatpowersandrespectforhumanrightsamongothers.Internationalrivalryandcooperationhaveexistedsidebysideoverthepastfewcenturies,whilethefoundationsofaninternationalorderhavesolidified.Wearenowseeingatransitionintheinternationalorderthatrequiresnewinnovativewaysofthinking.Chinaisseenasthekeydriverofthesechangesbecauseofitsuniquestatus,patternofgrowthandfuturepotential.Chinashouldembracethishistoricopportunityandtakeonitsobligationstocontributetothebirthofanewmoderninternationalorder.

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简介：InthispapertheuniformconvergenceofHermite-FejérinterpolationandGruenwaldtypetheoremofhigherorderonanarbitrarysystemofnodesarepresented.

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简介：在这篇论文，我们调查Jacobi假光谱为第四个顺序问题的方法。我们在non-uniformlyweightedSobolev空格在Jacobi-Gauss-type插值上建立一些基本结果，它在微分、不可分的方程的数字照，和数字方法的分析用作重要工具。然后，我们为几个单个问题和第四份订单的多重维的问题建议Jacobipseudospectralschemes。Numericalresults示威光谱这些计划的精确性，并且与理论分析与一致很好。

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