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A fast iteration algorithm for one dimensional unconstraint optimization problems of convex functions is suggested.

本文给出一个解凸函数一维无约束最优化问题的快速迭代算法。

In virtue of this,some properties of convex polyhedroid are studied and the definite values and extreme values of convex polygon in Euclidean plane are extended to the case in n-dimensional space.

提出n维欧氏空间中广义重心坐标的概念，建立了广义重心坐标下两点间的距离公式，并利用于研究凸多胞形的若干性质，将欧氏平面上凸多边形的一些定值与极值性质推广到n维空间。

Based on previous study,the authors deduced the three-dimensional relationship between micro-contact force and the macro-stress on convex polyhedron.

在前人研究的基础上，针对凸多面体相互接触的性质，推导了三维状态下的微观接触力和宏观应力的关系，并应用于结构性土的研究中。

This algorithm is proposed on the basis of the thought as follovvs: as for three dimensional Euclid space, the feasible region of any linear programming problem is a extended convex polyhedron, of which surface is consisted of some planes, and its objective function can be regarded as a parallel plane pencil with objective function value acting as parameter.

如果线性规划问题有最优解，那么过可行域的一已知顶点必至少存在这样一条棱——它以该己知顶点为一端点，可行域的另一顶点为另一端点，并使目标函数在另一端点的函数值优于己知端点的函数值，否则，该己知点就是线性规划问题的最优解。

Besides merits of the two dimensional generation of random aggregate model, It consider the effect of the radius of the different aggregates, which were assumed to obey normal distribution. Consequently, the numerical model generated is reasonable.5. The 3-D random model of convex polyhedron aggregate was generated with 3D-RAS.

三维混凝土随机骨料投放算法是二维投放算法的延伸，除了具有二维算法的一切优点外，还考虑了骨料粒径的变化，假定骨料粒径服从正态分布，从而使该软件生成的随机骨料模型和实际结构更为接近。5。

With its wide scope of application, whether it is flat or convex surface can be three-dimensional processing, facsimile and highly deceptive, such as the characteristics of the people favor.

它以其适用范围广、无论是平面还是凹凸立体面都能加工、图文以假乱真等特点而倍受人们青睐。

This paper uses the non-uniform grid model successfully to fulfill the requiremet of three-dimensional simulation modeling of the double post-hole convolute whose structures are complex.

成功地使用了非均匀网格模型，实现了对结构复杂的中心汇流区的三维数值建模；运用金属支撑杆模型，实现了负载的数值建模。

This paper uses the non-uniform grid model successfully to fulfill the three-dimensional simulation modeling of the double post-hole convolute whose structures are complex; uses strut to fulfill the load modeling of the computer implementation; explores the feasibility and application value of using MPI parallel algorith into the simulation.

成功地使用了非均匀网格模型，实现了对结构复杂的中心汇流区的三维数值建模；运用金属支撑杆模型，实现了负载的数值建模。探讨了MPI并行算法运用到模拟中的可行性及其应用价值。

Using the rotational coordinate axis, the complex multi-swing process can be studied on simple one-dimensional axis.

通过旋转一维坐标轴，复杂多机电力系统摇摆过程通过投影变换可以转化为一维坐标上简单运动来研究。

This passage study how to produce game using VC programming and three-dimensional geometric techniques, mathematical change and geometric figure techniques firstly, and mastered that how to use API interfaces for achieving the window and the transmission of information as well as coordinate system, the normal line, texture, coordinates and so on.

本文首先研究了利用VC编程以及立体几何技术，数学变换和几何图形技术来制作游戏的方法，掌握了利用API接口创建窗口实现消息传递以及对坐标系，法线，缓存，坐标变换的知识。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。