查询词典 linear algebra

This kind of title is carrier with knowledge of linear, round conic perhaps curve mostly, the knowledge such as integrated function, inequality, triangle, series, involved intellectual feature is more, be in again check thinking ability, the knowledge that asks examinee can combine what had mastered to concern linear, round, conic curve and method, the problem that faces on or data have observation, quite, analysis, integrated, abstraction and wraparound; can use analogy, induce and deduce undertake inferential; undertake well and truly stating.

这类题目大都以直线、圆或者圆锥曲线知识为载体，综合函数、不等式、三角、数列等知识，涉及的知识点较多，重在考查思维能力，要求考生能够结合已经把握的有关直线、圆、圆锥曲线的知识和方法，对面临的新问题或资料进行观察、比较、分析、综合、抽象和概括；会用类比、归纳和演绎进行推理；能合乎逻辑地、准确地进行表述。

Here a simple technique for parametrization construction of 17/11 biorthogonal wavelet family is presented: first, the associated synthesis filter is formulated as one trigonometric polynomial represented by two free parameters; then the perfect reconstruction condition of the filter bank is reduced to one system of linear equations; finally the analysis filter is obtained by solving this system of linear equations. Thus, the exact free parameter expressions for the 17/11 biorthogonal wavelet filter banks are derived.

该文给出了一种参数化构造17/11双正交小波组的简便方法：首先把小波合成滤波器表示为用两个自由参数表达的三角多项式，然后把双正交小波的精确重构条件归结为一个线性方程组，最后求解此方程组得到对应的小波分解滤波器，从而得到了17/11双正交小波滤波器的参数表达式。

Key words: probability and symbolic statistics; linear model; parameter estimate; best linear unbiased estimate

关键 词：概率论与数理统计；线性模型；参数估计；最佳线性无偏估计

By means of combinatin of unscented transformation and best linear unbiased filter, a new filter named unscented transformation-best linear unbiased estimator filter was proposed to solve the above nonlinear tracking problem.

通过将无迹变换与最优线性无偏滤波器有机结合，提出一种新的BLUE滤波算法，以便解决上述非线性跟踪问题。

This method first gains shape vectors and texture vectors from given sample facial images of the same kind of expression. Then, based on the facial image morphable model, the linear combinations of the shape vectors and texture vectors of the unexpressive images are retrieved respectively using optimal linear fitting.

该方法利用人脸图像形变模型线性组合逼近的基本思想，确定合成表情图像的形状信息和纹理信息，其步骤简单，容易实现。

So, in this paper, a circular cavity witha large radius is used to replace the straight boundary of thehalf space, then the half space problem can be changed tothe scattering problem of two circular cavities to the steadyincident P-wave . Having the aid of the mature cylinderfunction theory, the general solutions of the wave functionscan be given, and an infinite linear algebraic equations ofthe unknown coefficients in the wave functions can be gottenwith the boundary conditions and the Fourier complex seriesexpansion technology, the infinite linear algebraic equationscan be approximately solved by the finite trunction withsatisfying some definite precision, at the basis of thissolution of the equation, the variations and the lay-outs ofthe DSCF at the circular cavity boundary vs. the differentincident angles, the different embedded depths of thecircular cavity as well as the different dimensionless wavenumber of the incident P-wave.

为此，本文采用一个半径很大的圆孔来代替半空间的直边界，将该半空间问题转化为一无限大空间中两个圆孔对稳态P波的共同散射问题，借助于成熟的柱函数理论，通过写出问题波函数的一般形式解，利用问题的边界条件，并采用复数傅立叶级数展开技术将其化为一个仅包含问题波函数中未知系数的一无穷线性代数方程组，在满足一定计算精度的前提下，通过有限项截断进行近似求解，进而讨论了圆孔边界处的动应力集中系数随不同入射角、不同的圆孔掩埋深度、入射波的不同无量纲波数以及介质的泊松比变化和分布情况。

RESULTS The SOD activity had linear correlation with pH in the range of pH 2.2-8.0 when SOD concentration was fixed. The varication of activity after ultrosonication had linear correlcation with fluoresent intensity at 340 nm. With increase of uhtrosonic frequency, the microenviroment of tyrosine and tryptophan inside the SOD molecule was changed, then the balance of hydrophokicity and hydrophilicity inside the molecule was broken, this induced the blue shift of synchronous spectrum band and decrease of SOD activity.

结果 SOD浓度一定、pH2.2~8.0时，活性与其线性相关，超声后活性差值与340 nm荧光强度差值的线性相关；随着超声次数的增加，蛋白质SOD分子内部的酪氨酸、色氨酸所处的微环境被扰动，打破了分子内部的疏水和亲水平衡，使蛋白质的活性降低，在荧光检测中观察到普通荧光谱带蓝移，同步荧光的荧光峰位总体呈现峰位蓝移和强度下降。

It is observed that the threshold voltage, gain factor and current in linear and saturation region mismatch linear depend on the inverse of the square root of the device area.

由已经获得的经验知道，线性区和饱和区的阈值电压、增益及电流等参数的不匹配性均与器件面积的平方根成反比。

Detailed nonlinear model of camera self-calibration, non-linear wide-angle lens camera calibration technique, based on nonlinear optimization of camera calibration methods, and a step by step to solve the new linear camera calibration method.

详细说明：详细介绍了非线性模型下的摄像机自标定、广角镜头的摄像机非线性标定技术、基于非线性最优化的摄像机标定方法以及一种逐步求解的新的摄像机线性标定方法。

By regressive analyses of yield spread to interest rate and credit rank, building the stepwise linear regressive monitoring model of compound factors. With influence of product deadline, market risk and credit condition, yield spread shows non-linear changes. The main reason is the influence of credit condition and product deadline and market interest rate.

通过收益利差对产品期限、市场利率和信用等级等进行逐步线性回归，建立了OTC金融衍生品复合因子的监控模型；受产品期限、市场利率和信用状况的影响，收益利差呈非线性变化，主要原因是信用状况与产品期限、市场利率三者存在相互影响。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。