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The adaptive single Gaussian modelis used in the stable region with gradual changes and the nonparametric model is usedin the dynamic region with jumping changes.A Generalized Agglomerative Scheme isused to merge the pixels in the Variable Region and fill the small interspaces.ATwo-Threshold Sequential Algorithmic Scheme is used to group the backgroundsamples of the Variable Region into distinct Gaussian distributions.

通过在色度和亮度空间对监控背景进行有效的区域分类，在变化小的稳定区域采用简单快速的自适应单高斯模型，在变化大的动态区域采用计算复杂而有效的非参数化模型。

The main contents is: analyzing some detection method to moving target nowadays; particular studying the principle of detection moving target in SAR; analyzing SAR imaging theory and the echo model of moving target; discussing conventional SAR imaging , the movements of target cause the changes of doppler mass center and regulable frequency, and the changes cause effect the imaging result; introducing the estimation method of doppler parameter; analyzing theory of DPCA, derivating the formula needed, and validating it's validity and practicability through simulation; advancing the improved DPCA algorithm that combine the advantage of DPCA and ATI, and validating it through computer simulation; using the revision algorithm to range ambulate based on keystone transformation, and validating it through computer simulation; discussing the compensation art of SAR imaging.

主要内容有：分析了现有的一些动目标的检测方法；详细研究了SAR动目标检测的原理；分析了SAR成像理论和运动目标的回波模型；探讨常规SAR成像时，目标运动引起的多普勒质心和调频率变化，以及这些变化对成像结果的影响；介绍了多普勒参数的估计方法；分析了DPCA原理，推导所需要的基本公式，并仿真验证其有效性和实用性；提出了结合DPCA和ATI优点的改进DPCA算法，并仿真验证；探讨了SAR成像中的运动补偿技术。通过对仿真结果的分析，本文提出的方法具有一定的指导意义和参考价值。

Mine ventilation system is a multi-variable complex system, in which a roadway may result in changes in the parameters and their relative Boundary more than the wind tunnel and even the whole network of air volume changes; On the contrary, in order to make a certain amount of a wind tunnel to reach a certain required value, but also by a number of roadways in other regulatory measures taken to achieve.

矿井通风系统是一个多变量的复杂系统，其中一条巷道参数的改变可能导致与其相关的多条巷道甚至整个风网的风量发生变化；反之，要想使某一条巷道的风量达到某一要求值，也可以通过在其它若干条巷道内采取调节措施来实现。

Article : changes with the cycle relative to the national economy, the property market is also based on effective demand, investment conditions and future expectations and other factors, experiences depression, recovery and growth, prosperity and recession, cyclical changes.

文章指出：与国民经济的周期变化相对应，房地产市场也根据有效需求、投资状况、未来预期等因素，经历萧条、复苏与增长、繁荣和衰退等周期性变化。

The water vapor changes gradually weaken with height, but their relative changes reach the maximum in the upper troposphere.

但是，水汽的相对变化在对流层上层存在减少的高值中心。

We use the mathematics of adsorption and desorption to account for relative permeability and mobility changes due to the compositional and phase behavior changes in the field.

我们使用数学的吸附、解吸加以说明相对渗透率和流动的变动构图和相位的行为变化。

The research work done is presented as follows:Compound dewatering technique of vacuum tube well is an effective technology for solving the dewatering problems of aquitard and interface relict water according to physical simulation test and field test. The variation laws, such as degree of vacuum, pore water pressure in different strata, have been studied. The results show that there is a certain scope of influence of vacuum in strata, and the vacuum degree in the horizontal direction decreases gradually with the increase of the distance from the main well; the change law of degree of vacuum in the vertical direction increases firstly and then decreases with the depth of soil strata, and changes with different soil nature and depth; changes of pore water pressure in soil strata has also shown a similar law of degree of vacuum.

主要研究工作如下：通过室内物理模拟试验和现场试验均证明了真空管井复合降水技术用于解决弱透水层和界面残留水疏干难题的有效性；并且对不同地层中真空度、孔隙水压力等变化规律进行了研究，发现地层中真空度均有一定的影响范围，且真空度在水平方向上随距主井距离的增加而逐渐降低；在垂直方向上真空度随深度总的规律是先增加后降低，并随土层性质及深度的不同而变化；土层内孔隙水压力也呈现出与真空度类似的变化规律。

Objective To investigate the changes of hemodynamical parameter in rats with myocardial ischemea and the relationship between the changes and the renin angiotensin system.

目的 观察急性心肌缺血大鼠的血流动力学参数的变化过程及其与肾素-血管紧张素系统的关系。

Article 14 If such registration information as the name, address or legal representative of the domain name registrar changes or the cooperative relationship between the registrar and the registry changes or terminates, domain name registrar shall record such situation with the Ministry of Information Industry within 30 days after the change or termination.

第十四条域名注册服务机构的名称、地址、法定代表人等登记信息发生变更或者域名注册服务机构与其域名注册管理机构的合作关系发生变更或终止时，域名注册服务机构应当在变更或终止后30日内报信息产业部备案。

The results show that the regular changes of the angular sensitivity of the retinula cells not only depend on adapted states, but also on the changes of the day and night times.

本文采用细胞内记录方法，研究了蝗虫和螽斯复眼侧区小眼在不同时间和不同适应状态下，小网膜细胞角灵敏度的变化规律。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。