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The effects of small angle rotation of texture images and noise to the parameterestimation of Gauss-MRF model are researched.

研究了工件表面纹理图像的小角度旋转和噪声对高斯马尔可夫随机场模型的参数估计的影响，数据分析表明高斯马尔可夫随机场模型所估计的参数对于小角度的旋转纹理具有不变性。

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

As an assembled nanostructure, nanoelectrode ensembles or arrays present many advantages such as enhanced mass transport, lower double layer charging current, short time constant, lower electrolyte voltage drop, higher ratio of signal to noise, as well as good maneuverability, with high sensitivity and reliability in electroanalysis. Therefore, they have found broad applications in a variety fields including the study of electrochemical theory, biosensor, electrocatalysis and electrode materials in high energy chemical batteries.

纳米阵列电极作为一种人工组装的纳米结构体系，具有高传质速率、低双电层充电电流、小时间常数、小IR降及高信噪比、可操作性强和测量灵敏度高等优势，因而在电化学理论研究、生物传感器、电催化材料和高能化学电源电极材料等方面具有广阔的应用前景。

Then the incentive to undertake information search will be related to the contemporaneous trading phase of the market .

因此，在股票市场的乐观阶段，对小公司信息收集的高成本将被识别和投资于小公司的潜在高收益所超过。

Generalized predictive control is a kind of advance control methods that is of strong robustness, can overcome the time delay of system effectively and is suitable to unstable non-minimum phase system. But it has the shortcoming of large computation load because of online solving the Diophantine equation, inverse matrix and recursion solution by Least squares. So four kinds of fast algorithms of GPC that don't need the mathematical model of plant and are highly real-time are proposed in the paper. They have laid the rationale for the application of GPC to systems that need fast response.

广义预测控制是一种鲁棒性强、能够有效地克服系统滞后、可应用于开环不稳定非最小相位系统的先进控制算法，但由于它需要Diophantine方程计算、矩阵求逆和最小二乘的递推求解，因此计算量很大，本文针对此缺陷提出四种不基于对象模型且实时性高的广义预测控制快速算法，为广义预测控制应用于实时性要求高的快速系统奠定了理论基础，具体研究工作如下。

Due to the sensitivity of Guass wavelet to the flex points of the signal and the multi-scale analysis of the wavelet resolution,the abruptly changing points at the interface of stratigraphic sequence shown from the logging curve can be revealed clearly by Gauss wavelet transformation of logging data .

在层序地层单元的分界面上，测井曲线表现为突变，而高斯小波对信号突变点具有敏感性和多尺度分析特性，因此测井数据的高斯小波变换能够表征这种突变。

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理，从τ- p变换(即一般线性Radon变换)出发，研究利用阻尼最小二乘平方法求解其正变换，但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应，给这种方法的应用带来了很大的局限性；然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点，给出了求解其数值解的共轭梯度算法；接着讨论了高分辨率Radon变换，它把正则化思想和贝叶斯原理引进到了反演中，很好的克服了离散Radon变换产生的截断效应对结果的不利影响；最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

Geophysical characteristics of Ordovician carbonate rock were studied using drilling data. Impedance is affected mostly by material properties and reservoirs types, to a negligibly extent by lithology and flow. Compact layers and minor\|fracture reservoirs of Ordovician carbonate rock have characteristics of high density, high velocity and high impedance, and the prediction of minor fractures reservoir is difficult by the general seismic ways. Big fractures and fractured\|vuggy and vuggy and cavity reservoirs of Ordovician carbonate rock have characteristics of minor density and low velocity and low impedance in central Tarim basin, which obviously different from the surrounding rock and produce obvious characteristics in seismic data, so reservoirs can be predicted by applying general seismic data.

根据已钻井资料，对塔中地区上奥陶统良里塔格组岩石地球物理特征进行了研究，结果表明：物性、储层类型对波阻抗影响最大，岩性、流体对波阻抗影响较小；奥陶系碳酸盐岩致密层和小裂缝型储层具有密度大、速度高、波阻抗值大的特点，利用地震常规预测手段较难预测出小裂缝型储层，而塔中地区奥陶系碳酸盐岩大裂缝型、裂缝-孔洞型、孔洞型、洞穴型储层具有密度小、速度低、波阻抗值小的特点，与围岩具有较为明显的差异，在地震上可以产生明显的响应，可利用常规地震资料来预测这种类型储层。

The methods for the recovery of gravity filed from satellite altimetry are summarized and studied and the geoid and gravity anomaly grided in 2.5′×2.5′ size over china are recovered from multi-satellite altimetry data. Two methods are used to recover gravity.

6总结并研究了由测高数据恢复海洋重力场以及分离海面地形的方法；利用多代卫星测高资料，以测高轨迹海面高剖面梯度采样为基础数据，分别由垂线偏差法和最小二乘配置法反演了2.5′×2.5′中国海域的重力异常和大地水准面差距；然后采用移去-恢复由高斯滤波方法从平均海面高中分离出15′×15′中国海域的动力海面地形。

Based on the testing analysis of microcosmic digital image, there are smaller Fissions, higher density and even distribution under high confining pressure than under low one. Microcosmic damage mechanics of rock cracking under high confining pressure and hydraulic pressure is given. Reliable testing basis is offered to analyze further failure and stability of the noncircular cave surrounding rock under high confining pressure and high hydraulic pressure.

通过微观数字图像试验分析发现，高围压条件下大理岩断口裂纹长度小、密度大、分布相对均匀，给出高水压高围压作用下岩石破裂产生的微观损伤力学机理，为进一步分析高围压高内外水压条件下非圆形洞室围岩失稳破坏机理提供了可靠的试验依据。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。