应用数学

Circulant matrices have become one of the most important and active research fields of applied mathematics increasingly.

循环矩阵是一类很重要的特殊矩阵，日益成为应用数学领域中一个非常活跃和重要的研究方向。

The study of circulant matrices, an important component of the matrix theory, has become one of the most important and active research fields in applied mathematics.

循环矩阵是矩阵理论的一个重要组成部分，且日益成为应用数学领域中一个非常活跃和重要的研究方向。

Circulant matrices, which are an important component of the matrix theory, have become one of the most important and active research fields of applied mathematics increasingly.

关于循环矩阵类的研究是矩阵理论的重要组成部分，且日益成为应用数学领域中一个非常活跃和重要的研究方向。

Keywords Closed convex cone;gradient projection method;Least-squares solution;Inverse matrix problem;Inverse eigenvalue problem;Matrix completion problem;Optimal approximation

Article From 湖南大学；应用数学博士论文 2005年度闭凸锥；投影梯度法；最小二乘解；矩阵反问题；矩阵逆特征值问题；矩阵完全化；最佳逼近

Convexity has been increasingly important in recent years in the study of extremum problems in many areas of applied mathematics.

近年来，凸性在许多应用数学领域的极值问题研究中已越来越重要。

Management science and engineering is a cross-disciplinary subject combining management, applied mathematics and information technology.

管理科学与工程是一门管理学、应用数学、信息技术的综合性交叉学科。

The delay differential equation is an important offshoot of modern applied mathematics.

结论时滞微分方程是现在应用数学的一个重要研究课题。

Critical point theory;nonlinear elliptic differential and difference equation;existence of solution;multiply results;bifurcation;Trudinger—Moser inequality;applications

论文导师刘三阳，论文学位博士，论文专业应用数学论文单位西安电子科技大学，点击次数 4，论文页数 116页File Size3483K

The concept and properties of the relational analysis of C-mode between continuous system and discrete system are proved abstractly on the basis of the identity. The antithesis and difference of the displacement, the velocity and the acceleration of different objects as respect motion situation.

应用数学方法比较不同事物之间在反映各自运动态势的位移、速度、加速度方面的同一性、对立性、差异性关系的基础上，抽象论证了连续系统与离散系统的C型关联分析的概念及性质。

Geometry of matrices;;division ring;;block triangular matrices;;maximal sets of rank;;arithmetic distance;;adjacency preserving

论文导师黄礼平，论文学位硕士，论文专业应用数学论文单位长沙理工大学，点击次数 3，论文页数 41页File Size1325K

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。