查询词典 migration velocity

This one-way wave equation fits eikonal equation and transport equation corresponding to full acoustic wave equation in travel-time and first order amplitude. According to the perturbation theory often used in inverse solution, we split the velocity field into intraformational constant velocity background and variable velocity disturbance. Then we calculate time-shift quantity of migration and amplitude correction coefficients for wavefield depth continuation in total uniform formation and each formation.

基于反问题求解中常用的摄动理论，把速度场分裂为层内常速背景和变速扰动，求得整个均匀层波场深度延拓的偏移时移量及振幅校正系数、各层的偏移时移量及振幅校正系数，从而得到一个基于傅里叶有限差分法的双域保幅叠前深度偏移算子方程。

This paper reviewed the theory, development and applications of 3 typical velocity analysis technologies, stack velocity analysis, migration velocity analysis and tomographic inversion.

主要对叠加速度分析，偏移速度分析和速度层析反演三大类典型的速度分析方法的基本原理，发展及应用条件等作简要的回顾与介绍。

The mechanism of PPS accelerating IEC-6 cells migration was also researched with gene-chip technique. The Altas Clontech Rat cDNA Chip which consisted of 1176 spots representing different functional categories such as heat shock/stress, cell cycle, transcription factors, hormones, metabolism, etc was used. Result showed in cell migration model of IEC-6 cell line, compared with control group, expression of 38 genes in total 1176 genes varied in cells treated by PPS, including 21 genes up-regulated and 17 genes down-regulated. Date analyze showed the mechanism of PPS accelerating IEC-6 cells migration mainly related with promoting the numbers and activity of cellular ion channel, especially 〓 channel.

从以上实验结果中我们可以得出以下结论：四君子汤总多糖具有促进IEC-6细胞增殖、迁移、粘附的作用；四君子汤总多糖无论是对IEC-6细胞增殖、或者迁移的作用均优于各单味药多糖，可能是各种单味药多糖综合作用的结果；多糖可能是四君子汤"益气健脾"药效的主要成分；小肠上皮细胞可能是四君子汤总多糖的作用靶点之一，提示临床采用四君子汤及"益气健脾"法治疗"脾虚证"的疗效机制可能与增强机体的整体免疫和肠道粘膜免疫功能有关。

Improvement of MT migration tomography technology Based on the immanent relationship between tomography purpose and suitable frequency segment selection, we raise an entire frequency segment multi-parameter tomography scheme of MT finite difference migration. We establish a mathematical relationship among apparent electromagnetism reflectance, migration reflectance, background resistivity and the true resistivity distribution. After the introduction of TE/TM mode superpose rate, we carry out the associated resistivity tomography of two polarization mode to adapt the practical data interpolating situation.

大地电磁偏移成像的改进：针对频段选择和成像效果的内在关系，提出全频段、多参数有限差分偏移的解决方案；构建视反射系数、偏移反射系数、背景电阻率与实际电阻率分布的数学关系实现偏移电阻率成像；同时引入TE、TM模式加权因子以实现两个模式的联合偏移电阻率成像，更好的适应解释工作需要。

To address the problems that full volume 3_D DSR equation migration could meet with in production application, we present a feasible common_azimuth prestack τ migration approach based on the theory of crossline common_offset migration.

为了克服其全三维偏移算法在实际应用中可能面临的困难，本文采用稳相近似，在crossline常炮检距偏移理论基础上推导了实用的共方位角叠前τ偏移方法。

Therefore, based on the seismic data of Inline 146 and Inline 166 in Jianghan Oilfield, conventional analysis is made with GeoDepth software. The result shows that compared with post-stack rime migration, pre-stack depth migration profile has many advantages, including better fault imaging, accurate migration horning and better effect of complex structural imaging.

因此，针对江汉油田的Inlind146、Inline166的地震资料，经GeoDepth软件的常规分析处理，其结果表明，叠前深度偏移剖面较叠后时间偏移有许多优点：断层成像效果好、偏移归位准确、复杂构造成像效果好等。

It consider that region government should follow the principles including ecological sustainable development, land supply effective, perfect basic infrastructure and social service system, which is the countermeasure for selecting place to migration. To do well plan, construction and community introjecting is the scientific construction for the place of migration. To make the implement procedure criterion, to guarantee the money supply, to pay attention to migrator work and life is the countermeasures to optimize region government action for ecological migration.

认为遵循生态持续发展、土地有效供给、基础设施建设和社会化服务体系完善、城镇区域辐射等原则是科学选择生态移民迁入地的基本对策；做好迁入地规划、建设和社区整合是科学建设迁入地的对策；科学组织实施、保障资金、关注移民人口生产生活是优化地方政府生态移民行为的主要对策。

Due to the effect of various geologic settings, different gas has different migration characteristics and mainly there are authigenic and self accumulating gas, gas of lateral migration and gas of vertical migration.

由于受多种地质因素的影响，各类天然气呈不同的运移特征，主要表现为自生自储式、侧向运移式和垂向运移式。

Beamlet sources have strong local and directional character and can easily accomplish local illumination and migration. Besides, they provide better migration results than conventional migration methods.

小波束源有很强的局部性和方向性，它可以很容易的实现局部照明和偏移，除此之外，它的偏移效果也要好于常规的偏移方法。

Synthesizing some study fruits of population migration and different research methods, it also brings forward a interdisciplinary theory perspective for the study of migration behavior from such four levels as the conception hypothesis, inchoation, context and time dimension of migration behavior.

同时综合部分迁移研究的成果，融合不同研究方法，从以下四个层次：迁移行为的概念假设、迁移行为的发端、迁移行为的外部环境和迁移行为的时间纬度，为人口迁移行为分析提供了一个跨学科的研究视野。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。