POWRE: Wavelets Applications to Seimic Response Studies

POWRE：小波在地震响应研究中的应用

• 批准号: 0075070
• 负责人: Maria Todorovska
• 金额: $ 7.5万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0075070&HistoricalAwards=false
• 关键词: POWRE; Wavelets; Applications; Seimic; Response

0075070 TodorovskaSince first introduced in mid 1980s wavelet analysis has been widely applied in many fields of science and engineering. The wavelet transform is particularly suitable for analysis of transient signals and time varying systems, because it is localized both in time and frequency. Its widespread use is also due to the existence of orthogonal and bi-orthogonal bases, the efficiency in representation of transient signals (data compression), and the availability of fast and accurate computational algorithms for signal/image transformation and reconstruction. In spite of its obvious suitability to earthquake related problems (transient by nature), the wavelet analysis has been applied very little in Earthquake Engineering and Engineering Seismology. The objective of this project is to explore various applications of wavelets to these two fields. The focus of the study will be on identification of nonlinear soil-structure systems from strong and weak motion records in structures in presence of noise, and on representation and analysis of strong ground motion.This research enhancement grant, made under the Professional Opportunities for Women in Research and Education (POWRE) program, will provide an opportunity for the Principal Investigator to initiate independent research on the application of wavelets (and modern signal processing and estimation theory, in general) to her professional field, and will create opportunities for future funding from regular NSF and other sources. This is expected to increase her chances for getting a regular tenure track faculty appointment. The Principal Investigator is a mid career researcher, with interdisciplinary education (in Physics, Civil Engineering, Applied Mathematics and Electrical Engineering), career based in Earthquake Engineering and Engineering Seismology, and with a non-tenure track faculty appointment at the University of Southern California. This grant will also provide an opportunity for her continuing presence and visibility at her home institution, where she has been the only female faculty in the Civil Engineering Department. This project will involve cooperation across two engineering disciplines (the Principal Investigator will cooperate on this project with faculty from the Electrical Engineering Department of her home institution), and participation of one graduate student (with Civil Engineering background). Finally, this project will lead to the introduction of new methodologies for understanding and modeling earthquake strong ground motion and response of structures, and consequently will contribute to the national effort for Earthquake Risk Reduction.***

0075070 Todorovskasince于1980年代中期首次推出的小波分析已广泛应用于许多科学和工程领域。 小波变换特别适合分析瞬态信号和时间变化的系统，因为它在时间和频率上都位于局部。 它的广泛使用也归因于存在正交和双轴碱，瞬态信号表示效率（数据压缩）以及信号/图像转换和重建的快速准确计算算法的可用性。 尽管它明显适合与地震相关的问题（自然而然的问题），但小波分析在地震工程和工程地震学上的应用很少。 该项目的目的是探索小波在这两个字段中的各种应用。 The focus of the study will be on identification of nonlinear soil-structure systems from strong and weak motion records in structures in presence of noise, and on representation and analysis of strong ground motion.This research enhancement grant, made under the Professional Opportunities for Women in Research and Education (POWRE) program, will provide an opportunity for the Principal Investigator to initiate independent research on the application of wavelets (and modern signal processing and estimation theory, in general) to her professional field, and will create opportunities for future funding来自常规的NSF和其他来源。预计这将增加她获得定期任期教师任命的机会。首席研究员是职业中期研究人员，拥有跨学科教育（物理，土木工程，应用数学和电气工程），地震工程和工程地震学的职业，以及南加州大学的非衰落轨道教师任命。 这笔赠款还将为她在家庭机构的持续存在和知名度提供机会，在那里她一直是土木工程系中唯一的女教师。该项目将涉及在两个工程学科的合作（主要研究人员将与她的家庭机构电气工程系的教职员工在该项目上合作），并参与一名研究生（具有土木工程背景）。 最后，该项目将导致引入新的方法来理解和建模地震强的地面运动和结构的反应，从而有助于减少地震风险的国家努力。***