查询词典 squares

A novel least squares algorithm based on anti-WKB method and linear segment interpolation,which is called prediction-verification method, is proposed.This method takes the values calculated by anti-WKB and linear segment interpolation as approximation,then uses the least squares fitting,and after that compares the linear segment interpolation based on the anti-WKB method with it.

提出一种基于反WKB法与分段线性插值的最小二乘拟合方法来确定离子交换玻璃波导的横向折射率分布，它将反WKB法与分段线性插值所计算出的结果作为近似值，然后进行最小二乘拟合，并与基于反WKB的分段线性插值方法进行比较。

The focus is on applications of linear models, including generalized least squares and two-stage least squares, with probits and logits for binary variables.

重点是线性模型的应用，包括广义最小二乘和两阶段最小二乘probits和二元变量logits。

Based on the theory of environment behavior and psychology, considering user"s behavior and psychological need, the investigation scope including 2 representative urban recreation-squares and 3 pleasances, this thesis studied different users, user"s behavior, and usage quantity at different times. The results showed that there are many problems in recreation-squares of Taiyuan city, and region location, space subarea, edge effect and participation effect are main effect factors. On this basis, some optimizing design and strategy are put forward.

本文主要以环境行为学和环境心理学为理论基础，以城市公共空间使用者的行为特点和心理需求为出发点，以太原市为研究范围，通过详细调查太原市具有代表性和典型性的2个广场、3个小游园，对其使用人群、使用者行为活动、不同时间使用者数量等方面进行研究，总结出太原市公共空间中普通存在的问题，提出区位位置、空间场地分区、边界效应、可参与性效应等是影响公共空间的主要因素，并针对发现的问题，提出了改进和优化设计的建议和对策。

Like the central nave, the north was apparently decorated with one continuous panel. To the east, this gave way to a small design of crosses and squares. Enclosed in rectilinear edges, the panel showed a design of interlocked octagons, which, in turn. formed squares. hexagons and triangles. At some unknown date, this panel of white, black and red cubes was damaged by a crack which was repaired with white cubes.

像中殿一样，北边的长廊是由一个连续的窗格所装饰，直到东面才变为一个小的十字和方形的设计，并逐渐在边缘被密封，窗格由一连串的八角形设计，形成了方形、六角形和三角形，不知道在什麼时候，这些窗格的白色、黑色和红色的镶嵌块被损坏，这个裂缝被一个白色的镶块的修复。

A three-sided measurement method,a weighted least squares estimation method and a robust least squares estimation method are used to make wireless sensor network node localization more accurate.

为提高无线传感器网络节点定位精度，提出3种基于距离信息的改进定位算法：改进三边测量法、加权最小二乘估计、抗差最小二乘估计。

The effects of soil moisture on abscission of squares and bolls in different stages and on fiber quality of cotton were studied in 1991~1995 under the conditions of water control.

1991～1995年在人工控制水分的条件下，研究不同生育阶段土壤水分对棉花蕾铃脱落与纤维品质的影响。

It was found that deficient or excessive soil moisture led to increase in abscission of squares and bolls and decrease in fiber quality.

研究发现，土壤水分不足或过大，均易造成蕾铃脱落增加和品质下降。

This paper presents a method of iteration for least absolute deviation regression,which uses weighted least squares methods.

利用加权最小二乘法，提出最小一乘的一种迭代算法，这种方法使最小一乘法在计算上变得简单、直

Therefore, the absolute magnitude of the error pattern can be represented by the extra sum of squares using the weighting factor .

因此，绝对程度的误差模式可以通过多平方用加权因子代替。

On the basis of the conversion relation of inverse matrix and adjoint matrix, by using 1/ω instead of |B'(xBx(subscript k|, a new Landweber iteration formula x(superscript δ subscript k+1)=x(superscript δ subscript k)-ωB'(x(superscript δ subscript k)Bx(superscript δ subscript kB'x(superscript δ kf(x(superscript δ subscript k)-y(superscript δ)is constructed for solving rank deficiency nonlinear least squares problem, with which the phenomenon that leads to ill-posed problem because the iteration matrix is rank-deficient and very ill-conditioned in numerical iterative process is avoided.

基于逆矩阵和矩阵伴随算子的换算关系，并用1/ω代替|B′(xBx(下标k|，构造出一个新的求解秩亏非线性最小二乘问题的Landweber迭代格式，x(上标δ下标 k+1)=x-ωB'(xBx(上标δ下标 k*B'x(上标δ下标 kf(x-y，从而避免了在迭代过程中由于迭代矩阵的秩亏和病态而产生的不适定现象。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。