Simulation of 3D low-frequency electromagnetic (EM) fields propagating in the earth is
computationally expensive. We have developed a fictitious wave-domain high-order finite …

叠前逆时偏移等基于波场互相关原理的地球物理方法存在极大的计算与存储需求,
因此采用合适的波场重构方法显得尤为重要. 常规的随机边界法容易产生成像噪声 …

Pre-stack reverse time migration and other geophysical methods based on wave field
correlation principles have great computational and storage requirements, so it is very …

目的: 总结坐骨股骨撞击综合征(IFIS) 的MRI 表现, 提高对该病的认识. 资料与方法:
回顾性分析经我院确诊的IFIS 84 个髋关节(病例组) 及正常志愿者髋关节116 个(对照组) 的MRI …

Non-linear optimization plays a big role in many tasks in geophysics, such as full waveform
inversion (FWI). Visualization of the objective function is useful for the analysis and …

近年来, 声反射成像测井技术(ARILT) 在井旁裂缝, 孔洞性储层评价中成为研究热点. 常规ARILT
的探测深度一般在20m 以内, 且对复杂构造边界刻画能力不足. 本文基于测井观测系统及采集 …

A inversao de forma de onda completa (FWI) é uma das técnicas mais estudadas na
atualidade para recuperar parâmetros do subsolo que afetam a propagaçao da onda. Uma …

Este trabajo presenta el desarrollo, implementación, y uso del algoritmo de migración
reversa en tiempo (RTM-Reverse Time Migration) con verdadera amplitud. La complejidad …

Least-squares reverse time migration (LSRTM) and full waveform inversion (FWI) can both
provide an image of the subsurface. In this thesis, I investigate the connections and …

Objective: To summarize the MRI findings of ischiofemoral impingement syndrome (IFIS),
promote the recognition of this disease. Materials and Methods: The MRI images of 84 hips …