A SINGULAR VALUE DECOMPOSITION BASED TRUNCATION ALGORITHM IN SOLVING THE STRUCTURAL DAMAGE EQUATIONS

The structural damage identification through modal data often leads to solving a set of linear equations. Special numerical treatment is sometimes required for an accurate and stable solution owing to the ill conditioning of the equations. Based on the singular value decomposition (SVD) of the coefficient matrix, an error based truncation algorithm is proposed in this paper. By rejection of selected small singular values, the influence of noise can be reduced. A simply-supported beam is used as a simulation example to compare the results to other methods.Illustrative numerical examples demonstrate the good efficiency and stability of the algorithm in the nondestructive identification of structural damage through modal data.     

2009Pittcon会议(Ⅱ)

传感器与传感整合系统组的报告有:(1)Ashvarev,应用脉冲电极作离子选择电极的无偏压选择性测定;(2)R de Marco,离子选择性原子X显微术--一种新的材料鉴定技术;(3)S P Kounares,应用离子选择性电极分析火星表面;(4)M DPietrazak,以Rh(Ⅲ)络合物为基础的选择性测定NO2-的电化与学光传感器;(5)E Baker,聚合物膜离子传感器的电化激发;(6)A Raclu,应用电化阻抗谱探测离子选择膜的功能性质与程度;(7)MGratzl,在活体民试管中进行以光极为基础的银传感器试验,应用于型小实验室中的动物代谢监测.     

电化学振荡反应在中药鉴定中的应用

介绍化学振荡的由来、特点以及化学振荡理论研究、化学振荡在中药鉴定中的应用进展及未来发展趋势.深化研究化学振荡机理可以建立中药新型的准确、快速、方便的质量评价体系,推动中药在国际市场的发展.     

安光所3种环境监测仪器通过科技成果鉴定

中科院合肥物质科学研究院安徽光机所环境光学与技术重点实验室研制的“水体低浓度多组分芳香类污染快速监测仪”、“重点污染面源排放VOCs及温室气体连续自动监测系统”、“大气污染多组分排放通量快速遥测系统”等监测仪器通过了安徽省科技厅组织的科技成果鉴定,专家组一致认为3项成果的综合性能指标均达到国际先进水平。     

The coherent-constructible correspondence and Fourier-Mukai transforms

As evidence for his conjecture in birational log geometry, Kawamata constructed a family of derived equivalences between toric orbifolds. In a previous paper, the authors showed that the derived category of a toric orbifold is naturally identified with a category of polyhedrally-constructible sheaves on ℝ ⁿ . In this paper we investigate and reprove some of Kawamata’s results from this perspective.     

我国研制成功大功率457nm蓝光激光器

由长春新产业光电技术有限公司承担的2003年度吉林省科技发展计划重点项目“大功率全固态蓝光激光器研制开发”近日通过吉林省科技厅组织的专家鉴定．     

浅析珠算鉴定工作的重要性

珠算鉴定工作是珠算事业的重要组成部分，随着珠算鉴定的逐步完善，从而推动了珠算事业的进一步发展。