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Combined migration velocity model-building and its application in tunnel seismic prediction 被引量:1
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作者 巩向博 韩立国 +3 位作者 牛建军 张晓培 王德利 杜立志 《Applied Geophysics》 SCIE CSCD 2010年第3期265-271,293,294,共9页
We propose a combined migration velocity analysis and imaging method based on Kirchhoff integral migration and reverse time migration,using the residual curvature analysis and layer stripping strategy to build the vel... We propose a combined migration velocity analysis and imaging method based on Kirchhoff integral migration and reverse time migration,using the residual curvature analysis and layer stripping strategy to build the velocity model.This method improves the image resolution of Kirchhoff integral migration and reduces the computations of the reverse time migration.It combines the advantages of efficiency and accuracy of the two migration methods.Its application in tunnel seismic prediction shows good results.Numerical experiments show that the imaging results of reverse time migration are better than the imaging results of Kirchhoff integral migration in many aspects of tunnel prediction.Field data show that this method has efficient computations and can establish a reasonable velocity model and a high quality imaging section.Combination with geological information can make an accurate prediction of the front of the tunnel geological structure. 展开更多
关键词 Tunnel prediction migration velocity analysis Kirchhoff integral migration reverse time migration velocity model-building
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Problematizing the model-building duality:Examining the New Sacristy at S.Lorenzo,Florence,Italy
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作者 Mike Christenson 《Frontiers of Architectural Research》 CSCD 2023年第4期651-663,共13页
This reflection paper considers the epistemological implications of constructing a digital model of an existing building.The paper compares,in detail,three distinct approaches to constructing a digital model of the Ne... This reflection paper considers the epistemological implications of constructing a digital model of an existing building.The paper compares,in detail,three distinct approaches to constructing a digital model of the New Sacristy at S.Lorenzo in Florence,Italy.Each of the three approaches explores the effects of problematizing the model-building duality.This problematization implicates two conventional assumptions about existing-building models,namely,that they must be geometrically accurate and semantically predictable in order to be useful for research purposes.Proposed counterstrategies of“frictional reciprocity”and“emergent semantics”draw attention to often-overlooked knowledge-production capacities of existing-building models.Thereby,the paper aims to highlight and recommend these strategies as necessary to visioning possible futures,as a viable alternative to conventional modelmaking approaches. 展开更多
关键词 Digital modeling Architectural epistemology New sacristy model-building duality
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Using Evolutionary Computation to Solve Problems in Nonparametric Regression 被引量:2
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作者 Ding Lixin Kang Lishan +1 位作者 Chen Yuping Pan Zhengjun 《Wuhan University Journal of Natural Sciences》 EI CAS 1998年第1期27-31,共5页
This paper studies evolutionary mechanism of parameter selection in the construction of weight function for Nearest Neighbour Estimate in nonparametric regression. Construct an algorithm which adaptively evolves fine ... This paper studies evolutionary mechanism of parameter selection in the construction of weight function for Nearest Neighbour Estimate in nonparametric regression. Construct an algorithm which adaptively evolves fine weight and makes good prediction about unknown points. The numerical experiments indicate that this method is effective. It is a meaningful discussion about practicability of nonparametric regression and methodology of adaptive model-building. 展开更多
关键词 nonparametric regression Nearest Neighbour Estimate evolutionary computation nonhomogeneous selection adaptive model-building
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基于图解建模的生态环境质量评价自动化方法研究及实现
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作者 任文力 王萍 +1 位作者 张荞 周浩 《测绘技术装备》 2016年第1期26-30,共5页
针对现有生态环境质量评价指标运算操作复杂、表现形式不够直观等问题,现基于图解建模(Arc GIS Model-Builder)框架,提出一种生态环境质量评价自动化方法,实现生态环境质量的快速、精确评价;同时利用GIS空间分析技术,实现对生态环境质... 针对现有生态环境质量评价指标运算操作复杂、表现形式不够直观等问题,现基于图解建模(Arc GIS Model-Builder)框架,提出一种生态环境质量评价自动化方法,实现生态环境质量的快速、精确评价;同时利用GIS空间分析技术,实现对生态环境质量评价结果的空间化、网格化、尺度化。以四川省宜宾市为例,完成该区域多尺度下的生态环境质量评价,不仅为全面而直观地掌握该地区自然生态环境系统状况提供技术支持,也为后续开展生态环境质量评估提供示范效应。 展开更多
关键词 国情普查model-builder 生态环境质量评价网格化
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