约束优化

On the assumption that the directions of each thruster are same, a new mathematical model is presented which the minimum objective function is deviation between variables.

第二种方法是本文首创的，即在推力器方向相对一致的假设下，以各变量间的离差最小为优化目标，以力的平衡方程为约束条件，建立了一种简化的推力分配数学模型。

It is studied how to get a global minimum of a function over a sphere.

研究如何获取球体约束下非线性优化的全局最小点。

Through Fourier analysis, the optimization object was converted to find the minimum of a nonlinear multi-variable function with multi-constraint. The advanced sequential quadratic programming method was employed to find the minimum.

通过Fourier分析，将优化目标转化为一个求带有约束的多元非线性函数的最小值问题，利用序列二次规划方法获得最佳系数。

The basic idea was to discrete the structure and find the load function according to the energy criterion of buckling and the principle of random displacement method. As the critical load is the minimum of the load function, a problem of frame buckling can be transformed into an optimization problem. Therefore, the critical load can be found through solving the optimization problem.

先将结构离散为一个有限自由度系统；然后根据有限自由度系统平衡稳定性的能量准则和随机位移法的基本原理，建立符合能量准则的载荷函数，该函数不为零的最小值即为临界载荷，由此将稳定问题转化为无约束的多维优化问题；最后应用遗传算法求出相应于最优解的目标函数值。

The commonly used Gaussian pulse and Gaussian Monocycle cannot satisfy the FCC's frequency mask constraint well, in order to satisfy the request of coexistence and interference mitigation for the optimized waveform design, SSA (Soft-Spectrum Adaptation)-UWB scheme was proposed.

摘要常用的高斯脉冲及高斯单周不能很好地满足FCC的频率掩模约束条件，为了满足频谱共存、干扰避免的要求进行波形优化设计，我们提出了软频谱适配SSA（Soft-Spectrum Adaptation）-UWB方案。

Delay constrained multicast problem is an important part of multipoint routing optimization problem and has been proved to be a NP-Complete problem.

有时延约束的组播问题是通信网络多点路由优化问题中的重要部分，已被证明是NP complete问题。

Fourthly, to improve the application value of NESA, the issues of benefit distribution, organizational restriction and stability optimization under the dynamic environment are discussed.

为了加强实际运用价值，论文重点对非股权战略联盟在动态条件下的利益分配、组织约束以及不稳定性的优化问题进行深入的研究。

By constructing a job-schedule network that can present job-time relationship,the FJSP is transformed to a network flow problem,and a 0-1 integer programming mathematical model is developed.

针对一般形式的固定工件排序问题(即可用机器数是有限的，存在机器与工件间匹配约束，以机器分配成本最小为优化目标)，作者通过建立描述工件间时序关系的工件时序网络，将固定工件的排序问题转化为沿工件时序网络的网络流问题，并建立了0-1整数规划数学模型。

Trust region is to deal with nonlinear optimization of a relatively new approach.

本文作者给出了一种改进的针对无约束非光滑优化问题的信赖域算法。

It is proved to be efficient and robust by testing some examples of the constrained nonlinear programming problems.

主要工作包括以下6个方面：（1）提出一种基于改进的混合粒子群优化算法求解非线性约束规划方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。