quadratic function

We show that under appropriate conditions, the matrix sequence is convergent if the objective function is a strictly convex quadratic function.

我们证明在一定条件下，MBFGS算法用于求解严格凸二次函数极小值时产生的迭代矩阵序列是收敛的。

The correlation between some variates may be quadratic function or cubic function, even more complicated relationship. This problem needs to be studied further. 3.

有些变量之间可能存在二次函数关系、三次函数关系或者更为复杂的函数关系，有待进一步的研究论证。

We give a ( Minkowski) constant MK for several kinds of function field K over Fq ( including totally real function fields and quadratic function fields) such that each fractional ideal class of the ring Ok of integers contains an integral ideal with degree ≤ Mk.

对有限域Eq上某些函数域K（包括全实函数域和二次函数域）给出Minkowski常数Mk。使K的每个分式理想类包含次数≤Mk整理想AOk。

Based on the characteristics of normal distribution function, this paper takes use of the sinx function to approach instead of the original quadratic function.

本文根据正态分布函数的特性，将原文中用二次函数逼近的方法，改用sinx函数去逼近。

The calculated results show that the effect of the moving sand in the fluid outside the region to which saltation is confined, is similar to that of solid roughness, and the effective roughness can be depicted as the quadratic function of the friction velocity of the wind.

结果表明，跃移沙粒对风速的影响类似于床面粗糙度的影响，有效粗糙度随摩阻速度的变化关系可用二次函数表征；

The changing of maximum dynamic stress with depth quadratic function.

最大动应力不是随深度呈线性变化,而是呈二次函数关系.

Second, a new method of controlling chaos by employing a dynamical nonlinear controller is developed to DC-DC buck converters towards stead periodic orbit. The controller is piecewise-quadratic function in the form of x x.

基于一种分段二次函数xx，提出了一种新的混沌控制方法，使用它作为非线性反馈控制器成功地控制了DC-DC buck变换器到稳定的周期轨道。

Special Surfaces about the Gauss Curvature to be a Quadratic Function in 3-Dimentional Minkowski Space

三维Minkowski空间中高斯曲率为已给二次函数的几个特殊曲面

The design method of torque converter blade based on quadratic function distribution momentum was put forward.

提出了基于二次函数环量分配的液力变矩器叶片设计方法,并给出了应用实例.

This article would study on two types of discrete time predator-prey systems aiming at maximizing their profits and capture by using differential methods, quadratic function theory and Gordon theory respectively.

针对两类离散的捕食-食饵系统，以最大利润和最大捕获量为目标，分别应用微分方法、二次函数理论及Gordon理论，研究了同时捕获及单独捕获的捕获策略。

The Drawing of Quadratic Function Julia Set Fractal Picture Based on Escape Time Algorithm

逃逸时间算法绘制二次函数的Julia集分形图

The security of the algorithm is mainly based on the difficulty of RSA crack, and the complexity of the algorithm is based on matrix transformations and quadratic function operations.

此算法的安全性主要是基于RSA破解的难度，而算法复杂度基于矩阵变换与基础二次函数运算。

Admissibility of linear predictionlinear model with linear equality constraint under quadratic loss function are investigated.

本文研究线性和非线性等式约束非线性规划问题的降维算法.

By using the knowledge about shear diagram, moment diagram and extreme value of quadratic function, this paper discusses on the calculating method of maximum shear and maximum moment of simple-supported beam under moving loads.

应用剪力图、弯矩图和代数二次函数极值的知识，对简支梁受移动载荷作用时最大剪力和最大弯矩的计算方法进行了论证。

The Equivalence of Discrete Logarithms between Elliptic Curve and Real Quadratic Function Field

椭圆曲线与实二次函数域的DLP等价

The Research of Quadratic Function Curriculum Resource Exploitation Based on PowerDirector in Ninth Grade

PowerDirector下九年级一元二次函数课程资源的开发研究

The path is defined as linear combination of a sequence of conjugate directions which are obtained by applying conjugate direction method to the approximate quadratic function in the null space.

将共轭方向法应用于零空间中的近似二次模型，得到一组共轭方向序列，共轭方向序列生成了共轭梯度路径。

The model contains a quadratic function of the underlying substrate in the parameter of consumption rate incorporating Monod kinetics with internal metabolism.

该模型的消耗率参数中含有一个关于营养基的二次函数，功能反应函数则为具有内代谢的Monod类型，以更好地模拟实际问题。

The relationship between rape pollen germinating rate and concentration of sucrose or boron acid in incubation media was a quadratic function with one unknow quantify, respectively.

油菜花粉萌发率与培养基中蔗糖和硼酸浓度均呈一元二次函数关系。

In this paper, for the function of Chebyshev expansion, the approximating function having the approximant's order of Chebyshev polynomials is given by means of Faber mapping and quadratic Pad é approximation of power series, and it is also expressed by the fraction of Chebyshev polynomials.

对于具有Chebyshev展式的函数，文章利用Faber映射及幂级数二次Padé逼近，给出其具有关于Chebyshev正交多项式的逼近阶的逼近函数，并将其用Chebyshev正交多项式分式表示。

The relationship between P accumulation and Si content as well as its accumulation was quadratic function, which implied that Si could promote obviously P absorption under the condition of low Si concentration, but excessive Si concentration would inhibit P absorption.

磷积累量与硅含量和积累量呈二次函数关系，低硅条件下表现出明显的硅促磷效应，但过量的硅也会抑制磷的吸收。

The theory of extreme value of quadratic function is summarized from both conditional and unconditional extreme values and the linear equations set of the principal axis of quadratic surface is determined.

从J函数的无条件极值和条件极值两个方面，综述了二次函数的极值理论，以及确定二次有心曲面主轴的线性方程组。

The response curves of landscape pattern indices to grain size were fitted by quadratic function, cubic function, power function, and linear function, respectively.

部分景观指数随粒度变化的响应曲线可分别用二次函数、三次函数、幂函数、线性函数进行拟合；

The Double Wave Function Description of Particle Motion in the Quadratic Anharmonic Model Field

二次型非简谐振子模型中粒子运动的双波函数描述

The patch test function for C~ 1 axisymmetric couple stress is quadratic function. And it proves that the quadratic patch test function does not contain constant shear strain term either.

轴对称C~1偶应力有限元检验函数为二次函数，本文证明二次检验函数也不含常剪应变项。

The relationship of LAI and AB could be stated with a quadratic function.

同时，叶面积指数与地上生物量之间有二次函数的拟合关系。

Through the "static roller 1g acceleration of gravity experiment." quadratic function least squares polynomial fitting and application method, the temperature accelerometers static model;

通过加速度计的重力场1g静态翻滚实验，应用二次函数最小二乘法和多项式拟合的方法，建立了加速度计静态温度模型；

HAUSDORFF DIMENSION OF JULIA SETS OF RANDOM DYNAMICAL SYSTEM Every function whose derivative is linear is a quadratic function.

函数族Julia集的Hausdorff维数任意一个导数为线性函数的函数都是二次函数。

Every function whose derivative is linear is a quadratic function.

任意一个导数为线性函数的函数都是二次函数.

Mathematical Models for Floating Price in Purchase and Sale of Commodity and for a Quadratic Function of Demand

商品购销中的浮动价格与二次需求函数模型