快手拉垮了：老铁，挺住啊！

但是即便如此，快手还是有不少人希望能养这么一只坏坏的眼神、活（调）泼（皮）可（捣）爱（蛋）的小家伙。

为PLMF图中的顶点赋予各个原子独有的物理和化学性能（如原子在元素周期表中的位置、拉垮老电负性、摩尔体积等），以此将不同的材料区分开。当我们进行PFM图谱分析时，铁挺住仅仅能表征a1/a2/a1/a2与c/a/c/a之间的转变，铁挺住而不能发现a1/a2/a1/a2内的反转，因此将上述降噪处理的数据、凸壳曲线以及k-均值聚类的方法结合在一起进行分析，发现了a1/a2/a1/a2内的结构的转变机制。

参考文献[1]K.T.Butler,D.W.Davies,H.Cartwright,O.Isayev,A.Walsh,Nature,559(2018)547.[2]D.-H.Kim,T.J.Kim,X.Wang,M.Kim,Y.-J.Quan,J.W.Oh,S.-H.Min,H.Kim,B.Bhandari,I.Yang,InternationalJournalofPrecisionEngineeringandManufacturing-GreenTechnology,5(2018)555-568.[3]周子扬,电子世界,(2017)72-73.[4]O.Isayev,C.Oses,C.Toher,E.Gossett,S.Curtarolo,A.Tropsha,Naturecommunications,8(2017)15679.[5]V.Stanev,C.Oses,A.G.Kusne,E.Rodriguez,J.Paglione,S.Curtarolo,I.Takeuchi,npjComputationalMaterials,4(2018)29.[6]A.Rovinelli,M.D.Sangid,H.Proudhon,W.Ludwig,npjComputationalMaterials,4(2018)35.[7]J.C.Agar,Y.Cao,B.Naul,S.Pandya,S.vanderWalt,A.I.Luo,J.T.Maher,N.Balke,S.Jesse,S.V.Kalinin,AdvancedMaterials,30(2018)1800701.[8]R.K.Vasudevan,N.Laanait,E.M.Ferragut,K.Wang,D.B.Geohegan,K.Xiao,M.Ziatdinov,S.Jesse,O.Dyck,S.V.Kalinin,npjComputationalMaterials,4(2018)30.[9]A.Maksov,O.Dyck,K.Wang,K.Xiao,D.B.Geohegan,B.G.Sumpter,R.K.Vasudevan,S.Jesse,S.V.Kalinin,M.Ziatdinov,npjComputationalMaterials,5(2019)12.[10]Y.Zhang,C.Ling,NpjComputationalMaterials,4(2018)25.[11]H.Trivedi,V.V.Shvartsman,M.S.Medeiros,R.C.Pullar,D.C.Lupascu,npjComputationalMaterials,4(2018)28.往期回顾：快手认识这些带你轻松上王者——电催化产氧（OER）测试手段解析新能源材料领域常见的碳包覆法——应用及特点单晶培养秘诀——知己知彼，快手对症下方，方能功成。（i）表示材料的能量吸收特性的悬臂共振品质因数图像在扫描透射电子显微镜（STEM）的数据分析中，拉垮老由于数据的数量和维度的增大，拉垮老使得手动非原位分析存在局限性。这个人是男人还是女人？随着我们慢慢的长大，铁挺住接触的人群越来越多，铁挺住了解的男人女人的特征越来越多，如音色、穿衣、相貌特征、发型、行为举止等。

近年来，快手这种利用机器学习预测新材料的方法越来越受到研究者的青睐。拉垮老标记表示凸多边形上的点。

铁挺住利用机器学习解决问题的过程为定义问题-数据收集-建立模型-评估-结果分析。

在数据库中，快手根据材料的某些属性可以建立机器学习模型，便可快速对材料的性能进行预测，甚至是设计新材料，解决了周期长、成本高的问题。拉垮老引用量第一的文章RevisedEffectiveIonicRadiiandSystematicStudiesofInteratomicDistancesinHalidesandChalcogenides就是由美国杜邦公司贡献的。

7.前100的文章1.revisedeffectiveionic-radiiandsystematicstudiesofinteratomicdistancesinhalidesandchalcogenides2.processingofx-raydiffractiondatacollectedinoscillationmode3.electricfieldeffectinatomicallythincarbonfilms4.helicalmicrotubulesofgraphiticcarbon5.efficiencyofab-initiototalenergycalculationsformetalsandsemiconductorsusingaplane-wavebasisset6.theriseofgraphene7.vmd:visualmoleculardynamics8.equationofstatecalculationsbyfastcomputingmachines9.alow-cost,high-efficiencysolar-cellbasedondye-sensitizedcolloidaltio2films10.gaussian-basissetsforuseincorrelatedmolecularcalculations.1.theatomsboronthroughneonandhydrogen11.optimizationbysimulatedannealing12.abinitiomolecular-dynamicsforliquid-metals13.phaseannealinginshelx-90-directmethodsforlargerstructures14.preparationofgraphiticoxide15.electrochemicalphotolysisofwateratasemiconductorelectrode16.adsorptionofgasesinmultimolecularlayers17.accurateandsimpleanalyticrepresentationoftheelectron-gascorrelation-energy18.molecular-dynamicswithcouplingtoanexternalbath19.generalatomicandmolecularelectronic-structuresystem20.accuratespin-dependentelectronliquidcorrelationenergiesforlocalspin-densitycalculations-acriticalanalysis21.crystallographynmrsystem:anewsoftwaresuiteformacromolecularstructuredetermination22.atoms,molecules,solids,andsurfaces-applicationsofthegeneralizedgradientapproximationforexchangeandcorrelation23.thedevelopmentanduseofquantum-mechanicalmolecular-models.76.am1-anewgeneral-purposequantum-mechanicalmolecular-model24.nihimagetoimagej:25yearsofimageanalysis25.animprovedtechniquefordetermininghardnessandelastic-modulususingloadanddisplacementsensingindentationexperiments26.environmentalapplicationsofsemiconductorphotocatalysis27.orderedmesoporousmolecular-sievessynthesizedbyaliquid-crystaltemplatemechanism28.single-crystalstructurevalidationwiththeprogramplaton29.theelectronicpropertiesofgraphene30.two-dimensionalgasofmasslessdiracfermionsingraphene31.alow-viscosityepoxyresinembeddingmediumforelectronmicroscopy32.semiempiricalgga-typedensityfunctionalconstructedwithalong-rangedispersioncorrection33.intermolecularinteractionsfromanaturalbondorbital,donor-acceptorviewpoint34.numerical-integrationofcartesianequationsofmotionofasystemwithconstraints-molecular-dynamicsofn-alkanes35.refinementofmacromolecularstructuresbythemaximum-likelihoodmethod36.noteonanapproximationtreatmentformany-electronsystems37.structurevalidationinchemicalcrystallography38.abinitioeffectivecorepotentialsformolecularcalculations-potentialsforktoauincludingtheoutermostcoreorbitals39.opticalconstantsofnoblemetals40.ab-initiocalculationofvibrationalabsorptionandcircular-dichroismspectrausingdensity-functionalforce-fields41.organicelectroluminescentdiodes42.c-60-buckminsterfullerene43.inhibitedspontaneousemissioninsolid-statephysicsandelectronics44.aprofilerefinementmethodfornuclearandmagneticstructures45.issuesandchallengesfacingrechargeablelithiumbatteries46.self-consistentmolecular-orbitalmethods.12.furtherextensionsofgaussian-typebasissetsforuseinmolecular-orbitalstudiesoforganic-molecules47.asemi-empiricalmethodofabsorptioncorrection48.theadsorptionofgasesonplanesurfacesofglass,micaandplatinum.49.measurementoftheelasticpropertiesandintrinsicstrengthofmonolayergraphene50.room-temperatureionicliquids.solventsforsynthesisandcatalysis51.atomicforcemicroscope52.light-emitting-diodesbasedonconjugatedpolymers53.coherentx-rayscatteringforhydrogenatominhydrogenmolecule54.anewmixingofhartree-fockandlocaldensity-functionaltheories55.ab-initiomolecular-dynamicssimulationoftheliquid-metalamorphous-semiconductortransitioningermanium56.exploringhigh-pressurelithiumberylliumhydrides:anewchemicalperspective57.dictionaryofproteinsecondarystructure-pattern-recognitionofhydrogen-bondedandgeometricalfeatures58.phenix:acomprehensivepython-basedsystemformacromolecularstructuresolution59.crystalstructurerefinementwithshelxl60.possiblehigh-tcsuperconductivityintheba-la-cu-osystem61.anewfamilyofmesoporousmolecular-sievespreparedwithliquid-crystaltemplates62.palladium-catalyzedcross-couplingreactionsoforganoboroncompounds63.visible-lightphotocatalysisinnitrogen-dopedtitaniumoxides64.quantitativecharacterizationoftheglobalelectrophilicitypatternofsomereagentsinvolvedin1,3-dipolarcycloadditionreactions65.quantumespresso:amodularandopen-sourcesoftwareprojectforquantumsimulationsofmaterials66.phasercrystallographicsoftware67.goldnanoparticles:assembly,supramolecularchemistry,quantum-size-relatedproperties,andapplicationstowardbiology,catalysis,andnanotechnology68.useofconductivitymeasurementsinorganicsolventsforcharacterisationofcoordinationcompounds69.triblockcopolymersynthesesofmesoporoussilicawithperiodic50to300angstrompores70.a2ndgenerationforce-fieldforthesimulationofproteins,nucleic-acids,andorganic-molecules71.materialsforelectrochemicalcapacitors72.all-atomempiricalpotentialformolecularmodelinganddynamicsstudiesofproteins73.controlledgrowthofmonodispersesilicaspheresinmicronsizerange74.experimentalobservationofthequantumhalleffectandberrysphaseingraphene75.semiconductorclusters,nanocrystals,andquantumdots76.photocatalysisontio2surfaces-principles,mechanisms,andselectedresults77.buildingbetterbatteries78.synthesisofgraphene-basednanosheetsviachemicalreductionofexfoliatedgraphiteoxide79.scalablemoleculardynamicswithnamd80.sir97:anewtoolforcrystalstructuredeterminationandrefinement81.gromacs4:algorithmsforhighlyefficient,load-balanced,andscalablemolecularsimulation82.ramanspectrumofgrapheneandgraphenelayers83.graphene-basedcompositematerials84.clickchemistry:diversechemicalfunctionfromafewgoodreactions85.rapidchromatographictechniqueforpreparativeseparationswithmoderateresolution86.sir92-aprogramforautomaticsolutionofcrystalstructuresbydirectmethods87.quantummechanicalcontinuumsolvationmodels88.stronglocalizationofphotonsincertaindisordereddielectricsuperlattices89.fuzzynanoassemblies:towardlayeredpolymericmulticomposites90.thedeterminationofporevolumeandareadistributionsinporoussubstances.1.computationsfromnitrogenisotherms91.colloquium:topologicalinsulators92.graphene:statusandprospects93.theoryofsuperconductivity94.room-temperatureultravioletnanowirenanolasers95.functionalporouscoordinationpolymers96.unifiedapproachformolecular-dynamicsanddensity-functionaltheory97.polymerphotovoltaiccells-enhancedefficienciesviaanetworkofinternaldonor-acceptorheterojunctions98.carbonnanotubes-theroutetowardapplications99.astepwisehuisgencycloadditionprocess:copper(i)-catalyzedregioselectiveligationofazidesandterminalalkynes100.thesiestamethodforabinitioorder-nmaterialssimulation往期回顾:那些年，铁挺住我们在SCI中吃过的狗粮…我也曾想支持国产期刊，铁挺住但现实让我选择了SCI。1.年代分布从图上可以看到，快手这100篇文章，有60%分布在1990-2010年区间，有15篇分布在1980-1990年区间，7篇分布在1970-1980年，5篇分布在2010年以后。

这100篇文章中，拉垮老引用量最高的是1976年发表在ACTACRYSTALLOGRAPHICASECTIONA上，拉垮老题为RevisedEffectiveIonicRadiiandSystematicStudiesofInteratomicDistancesinHalidesandChalcogenides，引用次数高达41434。从图上可以看到，铁挺住Science因为贡献13篇文章而位列第一，第二是Nature的11篇。