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IntroductionExtensive research works have been published for solving nonlinear mathematicprogramming problems.Nonetheless,it is still difficult to find an effective and universalapproach for general programming problems with multiple design variables and … 相似文献
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提高数据的完备与真实性是水资源监控能力建设的关键。针对国家水资源监控能力建设项目实施以来其监测数据呈现出的异常特征,按照“先粗筛后精选”逻辑,并考虑取用水季节性周期波动的特点,提出采用拉依达准则-模态分解-傅里叶残差修正的水监测数据异常值识别方法,并根据粒子群优化最小二乘支持向量机模型实现对异常数据的重构恢复。通过对企业取用水数据的实例分析,结果表明分段式拉依达准则在其监测异常数据的粗筛中具有较好的适用性,利用傅里叶修正集合模态分解的监测数据序列可取得更佳的拟合效果,从而达到异常数据精选的目的;而粒子群优化最小二乘支持向量机模型对异常数据重构恢复的可信度高于普通最小二乘支持向量机及传统曲线拟合数据重构方法,即该类取用水监测异常数据重构方法可有助于进一步推进其监测数据对实际水资源状态的客观反映。 相似文献
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Equivalent Boundary Integral Equations with indirect unknowns for thin elastic plate bending theory 总被引:4,自引:0,他引:4
Zhang Yao-ming Associate Professor Doctor Sun Huan-chun Yang Jia-xin 《应用数学和力学(英文版)》2000,21(11):1246-1255
Equivalent Boundary Integral Equations (EBIE) with indirect unknowns for thin elastic plate bending theory, which is equivalent
to the original boundary value problem, is established rigorously by mathematical technique of non-analytic continuation and
is fully proved by means of the variational principle. The previous three kinds of boundary integral equations with indirect
unknowns are discussed thoroughly and it is shown that all previous results are not EBIE.
Paper from SUN Huan-chun, Member of Editorial Commitee, AMM
Biography: ZHANG Yao-ming (1962-) 相似文献
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可加的广义代数格范畴与 T0 拓扑空间范畴相等价, 从这个观点出发, 作者把可加广义代数格作为一个闭集格, 在其上建立 Urysohn 引理和 Tietze 扩张定理. 这是拓扑理论在格上的一种新推广, 有助于格上拓扑理论的研究和广义连续格理论的应用. 相似文献
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Analytical Treatment of Boundary Integrals in Direct Boundary Element Analysis of Plan Potential and Elasticity Problems 总被引:1,自引:0,他引:1
IntroductionAcomparison[1,2 ]betweentheDBEMandtheindirectboundaryelementmethod (IBEM)hasbeenmadebyearliersomeauthors.TheirmainviewpointsarethattheDBEMhasanadvantageofgettingobjectivelyphysicalquantitiesotherthanimaginaryones ,butitrequiresanintegratednumer… 相似文献
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IntroductionAnunevendistributionoftheclearanceofvane_tipalongthecircumferenceorientationcausedbytherelativeeccentricitybetweenimpellerandcylinderofsteamturbinewillresultunequalpneumaticforceofthevanesatthesamestage .Asaresult,inadditiontoatorque,thetra… 相似文献
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如果 A是 Hilbert 空间上的完全分配格代数, 那么A中秩一算子生成的子代数在 A中弱稠密, 当且仅当,A在迹尖算子空间中的一次和二次预零化子的弱闭包是自反的;如果A是套代数,那么LatA是极大套,当且仅当,A的包含A-的每个弱闭子空间是自反的,其中 相似文献
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MaShengming 《分析论及其应用》2003,19(1):89-98
This is a short survey on osicllatory integral operators. We summarize the main development and managing techniques of the field, and give some open problems and main references in the end. 相似文献