In tomographic statics seismic data processing, it 1s crucial to cletermme an optimum base for a near-surface model. In this paper, we consider near-surface model base determination as a global optimum problem. Given ...In tomographic statics seismic data processing, it 1s crucial to cletermme an optimum base for a near-surface model. In this paper, we consider near-surface model base determination as a global optimum problem. Given information from uphole shooting and the first-arrival times from a surface seismic survey, we present a near-surface velocity model construction method based on a Monte-Carlo sampling scheme using a layered equivalent medium assumption. Compared with traditional least-squares first-arrival tomography, this scheme can delineate a clearer, weathering-layer base, resulting in a better implementation of damming correction. Examples using synthetic and field data are used to demonstrate the effectiveness of the proposed scheme.展开更多
Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of th...Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of this broader definition. The application of the design mindset over a broader scope of disciplines such as business and technology results in creative people from overlapping disciplines who are flexible, curious, and imaginative; have a tolerance for ambiguity and provide meaningful frameworks for difficult situations. The design process becomes a secondary skill-set that compliments another primary knowledge/skill base. With this model, business disciplines could apply design thinking to the understanding of fundamental economic drivers and technology/engineering/manufacturing disciplines could apply design thinking over deep process expertise in implementation. What about the work of the traditional design disciplines？ Following the model described above for business and technology, design disciplines should apply ＂design thinking＂ on top of some foundational skill set that comes from the area of human values. What is this primary skill-set？ This paper will attempt to explore and create a simple map of the area defined as ＂Human Values＂, to locate current design education within that area, to propose directions for design education to move within that area, and to propose similar educational areas within the fields Business and Technology.展开更多
基金funded by the National Science VIP specialized project of China(Grant No.2011ZX05025-001-03)by the National Science Foundation of China(Grant No.41274117)
文摘In tomographic statics seismic data processing, it 1s crucial to cletermme an optimum base for a near-surface model. In this paper, we consider near-surface model base determination as a global optimum problem. Given information from uphole shooting and the first-arrival times from a surface seismic survey, we present a near-surface velocity model construction method based on a Monte-Carlo sampling scheme using a layered equivalent medium assumption. Compared with traditional least-squares first-arrival tomography, this scheme can delineate a clearer, weathering-layer base, resulting in a better implementation of damming correction. Examples using synthetic and field data are used to demonstrate the effectiveness of the proposed scheme.
文摘Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of this broader definition. The application of the design mindset over a broader scope of disciplines such as business and technology results in creative people from overlapping disciplines who are flexible, curious, and imaginative; have a tolerance for ambiguity and provide meaningful frameworks for difficult situations. The design process becomes a secondary skill-set that compliments another primary knowledge/skill base. With this model, business disciplines could apply design thinking to the understanding of fundamental economic drivers and technology/engineering/manufacturing disciplines could apply design thinking over deep process expertise in implementation. What about the work of the traditional design disciplines？ Following the model described above for business and technology, design disciplines should apply ＂design thinking＂ on top of some foundational skill set that comes from the area of human values. What is this primary skill-set？ This paper will attempt to explore and create a simple map of the area defined as ＂Human Values＂, to locate current design education within that area, to propose directions for design education to move within that area, and to propose similar educational areas within the fields Business and Technology.
