学科分类
/ 2
28 个结果
  • 简介:Thispaperdiscussespointwiseerrorestimatesfortheapproximationbyboundedlinearoperatorsofcontinuousfunctionsdefinedoncompactmetricspaces(X,d),Theauthorsintroduceanewmajorautofthemodulusofthecontinuitywhichisthesrnallestamongthoseg(ξ)'swhichhavethefollowingpropertiesω(f,ε)≤9(f,ε)andg(f,λε)≤(1+λ)g(f,ε)andbythismajorantanewquantitativeKorovkintypetheoremonanycompactmetricspaceisproved.

  • 标签: 最小支配连续模 数值近似 紧空间 有界线性算子
  • 简介:Therapidadvancementofscienceandtechnologyintheeraofbusinesscompetition,asitistoday,hasanimpactonaverydynamicbusinessenvironment,andrequiresorganizations/companiestohavehumanresources(employees)thatareinnovativeandresponsivetotheadvancementofscienceandtechnology.Schoolsanduniversitiesmustcontributetopreparinggenerationswhohavetheabilitytoinnovateforeveryemployeewhoworksinanagency/company.Thepurposeofthisstudyistostudythedominantfactorsthatinfluencebehaviortoproduceinnovativeproducts.Thequantitativeapproachwasusedinthisstudywithsurveymethods.Thesampleofthisstudyis100employeeswhoareoneofthecompaniesinthefieldoftechnologyservicesinJakarta,including:markets,volunteerwebsites,portals,andselectedbypurposivesampling.Datawereobtainedbydistributingquestionnairesandanalyzedusingregression.Regressionanalysisisusedtodeterminethemodeloftherelationshipbetweenbehaviortoproduceinnovativeproducts(Y)withentrepreneurialleadership(X1)andcreativity(X2).Theresultsofthestudyare:(1)Entrepreneurialleadershipandcreativitycollectivelyhaveapositiveinfluencetoimprovebehaviortowardsinnovativebehavior;(2)leadershipandentrepreneurialcreativitycollectivelycontributetoimprovingbehaviortoproduceinnovativeproductsat77%and23%ofotherfactors;(3)entrepreneurialleadershipandcreativity“cannotbeignored”asaninstrumenttoimprovebehaviortoproduceinnovativeproducts;(4)improvingbehaviortoproduceinnovativeproductscanbepredictedbyincreasingentrepreneurialleadershipandcreativitybyusingasimpleregressionmodelY=0.61+0.47X1+0.41X2.

  • 标签: ENTREPRENEURIAL LEADERSHIP CREATIVITY BEHAVIOR to PRODUCE
  • 简介:在这研究,一个新数学模型被开发二部分创作了,包括为模仿近的差错地面运动的主导的速度脉搏的泛音和多项式表情。基于建议速度功能,为扎根的加速的相应表情和排水量时间历史也被导出。建议模型然后在下一代变细(NGA)工程图书馆用在差错地面运动附近像脉搏的选择的一些被适合。新模型简单处于良好的竟技状态而且与精确的高水平在差错记录附近模仿实际速度的长时期的部分不仅。建议基于模型的有弹性的反应系列与在脉搏的占优势的频率的邻居的近的差错记录兼容,这被显示出。结果显示建议模型足够地模仿时间历史的部件。最后,建议脉搏的精力与实际记录的精力相比证实相容性。

  • 标签: 近断层地震动 地震动模拟 速度脉冲 强地面运动 数学模型 组成部分
  • 简介:Byusingthemethodsofqualitativeandquantitativeanalysis,thespeciescompositionanddominantgenusofharmful,ciliatesinyoungabaloneculturepondsarestudied.Totally68speciesofciliates,belongingto3classes,16ordersand46genus,arefound.ThedominantciliatespeciesareAspidiscaleptaspis,Vorticellasp.andEuplotesrariseta.Duringtheyoungabalonecultivation,thenumbersofyoungabalonesincreasefirst,andthenshowatrendofdecreasing.Therelationshipbetweenthedensityandcompositionofciliatesandthedensityofalgaeintheyoungabaloneculturepondsisalsodiscussed.

  • 标签: 鲍鱼 显性 纤毛虫 核素
  • 简介:WAVE EQUATION MODEL FOR NUMERICAL SOLUTIONS OF ADVECTION-DOMINANT HEAT TRANSFERWAVEEQUATIONMODELFORNUMERICALSOLUTIONSOFADVECT...

  • 标签: HEAT TRANSFER WAVE EQUATION MODEL finite
  • 简介:调查土壤侵蚀的原因处于由于另外的因素的存在的自然条件是困难的。没有简化试验性的条件,当考虑象植被盖子,地形学,和降雨那样的因素时,与它的众多的参数学习土壤行为是困难的并且处于大多数条件不可能。模拟途径的应用程序因此是必要的简化原型。在这研究,象质地和前身那样的物理土壤因素的效果玷污潮湿,与土地斜坡一起,使用伊朗阴谋的一个降雨模拟器和土壤侵蚀并且植被盖子在Taleghan分水岭被评估,。为这个目的,89u,生产30min持续时间的24.5和32mm/h降雨紧张的120厘米降雨模拟器学习区域的一个普通条件,与95u的尺寸在土壤侵蚀阴谋上在144个地点被使用125厘米。阴谋有1220和2030%,不同土壤质地,不同先前的土壤潮湿,和媒介的斜坡课到差的植被盖子条件。为24.5和32mm/h降雨紧张,沉积收益有高关联,这被发现?0.771并且?0.796分别地与植被盖子和与土地的0.045和0.029的细微关联倾斜。为预言沉积收益的回归方程也为不同条件被开发。

  • 标签: 土壤侵蚀 降雨量 植被覆盖 物理模型
  • 简介:AbstractBackground:Homozygous or compound heterozygous mutations in high temperature requirement serine peptidase A1 (HTRA1) gene are responsible for cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy (CARASIL). Recently, increasing evidence has shown that heterozygous HTRA1 mutations are also associated with cerebral small vessel disease (CSVD) with an autosomal dominant pattern of inheritance. This study was aimed to analyze the genetic and clinical characteristics of HTRA1-related autosomal dominant CSVD.Methods:We presented three new Chinese cases of familial CSVD with heterozygous HTRA1 mutations and reviewed all clinical case reports and articles on HTRA1-related autosomal dominant CSVD included in PUBMED by the end of March 1, 2020. CARASIL probands with genetic diagnosis reported to date were also reviewed. The genetic and clinical characteristics of HTRA1-related autosomal dominant CSVD were summarized and analyzed by comparing with CARASIL.Results:Forty-four HTRA1-related autosomal dominant CSVD probands and 22 CARASIL probands were included. Compared with typical CARASIL, HTRA1-related autosomal dominant probands has a higher proportion of vascular risk factors (P < 0.001), a later onset age (P < 0.001), and a relatively slower clinical progression. Alopecia and spondylosis can be observed, but less than those in the typical CARASIL. Thirty-five heterozygous mutations in HTRA1 were reported, most of which were missense mutations. Amino acids located close to amino acids 250-300 were most frequently affected, followed by these located near 150∼200. While amino acids 250∼300 were also the most frequently affected region in CARASIL patients, fewer mutations precede the 200th amino acids were detected, especially in the Kazal-type serine protease domain.Conclusions:HTRA1-related autosomal dominant CSVD is present as a mild phenotype of CARASIL. The trend of regional concentration of mutation sites may be related to the concentration of key sites in these regions which are responsible for pathogenesis of HTRA1-related autosomal dominant CSVD.

  • 标签: CARASIL Cerebral small vessel disease Heterozygous mutation HTRA1
  • 简介:在在哈萨克斯坦的南部的部分的Arys西域运河命令区域的荒谬的灌溉惯例与差的物理、化学的性质导致了土壤的形成。为了学习灌溉和沥滤的惯例或地下水上升是否在阳离子上贡献了Mg2+的累积,交换这些土壤的建筑群,当来源数据和视觉MINTEQ模型被使用在学习区域分析水和土壤的化学作文,在土壤和地下水质量的历史的变化被使用。强加的灌溉政体并且轻sierosem土壤沥滤导致了溶解并且从土壤侧面的固有的石膏和有机物的随后的沥滤。进一步,灌溉水里的酸式碳酸盐的支配支持了象方解石在场的碳酸盐矿物质捱过。与灌溉水里的Ca2+相比的Mg2+的更高的集中在阳离子交换建筑群上由Mg2+导致了Na+的代替。在命令区域的更低的部分,浅地下水在阳离子交换地点上贡献了Na+并且到Mg2+的大程度的累积。

  • 标签: 土壤剖面 哈萨克斯坦 灌溉农业 浅层地下水 阳离子交换
  • 简介:Dominantspeciesofzooplanktoncommunityvarywithlatitude.ThoughChinapossessesavastcoastalareainnorthwesternPacific,studiesonthelatitudinaldominantspeciesgradientarerare.WecollectedzooplanktonsamplesfromHaizhouBay(34.56?–35.19?N,119.51?–120.30?E),YueqingBay(28.14?–28.38?N,121.10?–121.21?E)andDongshanBay(23.65?–23.90?N,117.45?–117.60?E)inMay2012andMay2013topreliminarilycharacterizethelatitudinaldominantspeciesdistribution.Allthesampleswerecollectedverticallyusinga0.505mmmeshplanktonnetwith0.8minmouthdiameterfrombottomtosurface.Calanussinicus,Aidanosagittacrassa,Labidoceraeuchaeta,Zonosagittanagae,AcartiapacificaandParacalanusparvuswerefoundtobedominant.C.sinicuswasthemostdominantspeciesandtheuniqueoneoccurredinallthreebays.Withlatitudedecreasing,boththeabundanceandproportionofC.sinicusdeclinedsharply.Clusteranalysisshowedthatthe6dominantspeciescouldbedividedinto3groups,basedontheiroccurrencesinthethreebays.OurresultssuggestedthatthedistributionofdominantspeciesalongthecoastofChinahasasignificantlatitudinalgradient.C.sinicuswhichwidelydistributesinthecoastalwaterofthenorthwesternPacificcanwelladapttothetemperatureatdifferentlatitudes.ThehighabundanceinHaizhouBayindicatedthatC.sinicuswasanexemplarywarm-temperatespecies,andmorecommonlyoccursinthenorthofChinaseas.Theecologicalcharacteristicsofdominantspecieschangefromwarm-temperatetypeinhigh-latitudinalbaystowarmwatertypeinlow-latitudinalbays.

  • 标签: 浮游动物群落 纬度梯度 中国海域 优势种 中华哲水蚤 西北太平洋
  • 简介:TheE-supplychainisformedgraduallyalongwiththedevelopmentofnetwork,whichisgettingmoreattentionamongenterpriseswithuniqueadvantages.ThreeE-supplychainoperationmodesareconstructedinthispaper,thentheoptimalpricingandadvertisingstrategiesunderthosemodesarestudiedandcompared,whicharedemonstratedwithnumericalexamples.Theresultsofcomparisonandanalysisshowthat:Sellingprice,networkplatformservicelevel,advertisinginvestmentandtheprofitsofmanufacturer,networkplatformandE-supplychainallincreasewithadvertisingeffectivenessofstimulatingdemandgrowth.Undercentralizeddecision-makingmode,servicelevelishighest,advertisinginvestmentislargestandtheprofitofE-supplychainishighestaswell.Whenmanufacturerleadsdecentralizeddecision-makingmode,notonlynetworkservicelevel,advertisinginvestmentandtheprofitofmanufacturercangainbetterresults,butalsoprofitofnetworkplatformcanbehigherwhiletheadvertisementeffectofincreasingdemandisbigenough.Additionally,itisconfirmedthatcentralizeddecision-makingisbetterthandecentralizeddecision-makingforsystemoperation.Besides,decentralizeddecision-makingmodeledbymanufacturerissuperiortoitledbynetworkplatformontheconditionthatadvertisementeffectisobvious.

  • 标签:
  • 简介:Thispaperstudiesatwostagesupplychainwithadominantupstreampartner.ManufactureristhedominantpartnerandoperatesinaJust-in-Timeenvironment.Productionisdoneinasinglemanufacturinglinecapableofproducingtwoproductswithoutstoppingtheproductionforswitchingfromoneproducttotheother.Themanufacturerimposesconstraintsonthedistributorbyadheringtohisfavorableproductionschedulewhichminimizeshismanufacturingcost.Distributorontheotherhandcaterstoretailers'orderswithoutincurringanyshortagesandisresponsibleformanagingtheinventoryoffinishedgoods.Adheringtomanufacturer'sschedulemayleadtohighinventorycarryingcostsforthedistributor.Distributor'sproblem,whichistofindanoptimaldistributionsequencewhichminimizesthedistributor'sinventorycostundertheconstraintimposedbythemanufacturerisprovedNP-HardbyManojetal.(2008).Therefore,solvinglargesizeproblemsrequireefficientheuristics.Wedevelopalgorithmsforthedistributionproblembyexploitingitsstructuralproperties.Weproposetwoheuristicsandusetheirsolutionsintheinitialpopulationofageneticalgorithmtoarriveatsolutionswithanaveragedeviationoflessthan3.5%fromtheoptimalsolutionforpracticalsizeproblems.

  • 标签: 库存成本 合作伙伴 生产成本 供应链 上游 序列
  • 简介:合适的直角的分解方法在转子定子以内被用于即时速度地一台高速度的高压的离心的压缩机的内部排的区域。处理数据来自实验和数字模拟。与Fourier变换比较,POD为两块起始的地给最好的形式的近似,以在要考虑的模式的任何给定的数字上表示的精力:到速度地的活动范围98%全部的精力,邮政部门模式的要求的数字比Fourier泛音的数字低多达九倍。单个邮政部门模式被给并且证明不稳定的转子定子相互作用已经是在第一个模式的现在。关键词转子定子相互作用-合适的直角的分解-邮政部门

  • 标签: 转子定子交互作用 固有正交分解 POD 正交分解法 离心式压气机