查询词典 inversion problem

Under analysis the principle of the ant colony optimization, an improved ant colony optimization in solving the seismic data inversion problem is proposed.

蚁群算法具有正反馈性、分布式计算和贪婪式启发搜索的特点，克服了传统优化算法的缺陷。

Introduced the very development present condition of contents of the medicine dynamics research in brief, induce a differential equation inversion problem to lift the method finally.

简单的介绍了药物动力学研究的内容极其发展现状，最后归纳出微分方程反演问题的提法。

The advantage and disadvantage of scheduling tasks adopted by the system are analysed.The priority inheritance protocol solution is proposed in view of the emergence of the priority inversion problem.

分析了系统采用的调度方法的优缺点，提出了用优先级继承协议解决优先级反转问题的方法，并将优先级继承协议结合到系统中，最后用实验验证了算法的正确性。

Using the potential function method,we turn the illposed inversion problem into goodposed one,and provide the conditions of the edgepreserving potential function.

通过势函数方式将波阻抗反演的病态问题转为良态问题，并且给出了边界保护势函数所具备的条件。

The conventional nonlinear seismic inversion methods are low in convergence and sometimes will result in the problem of local extremum.

传统非线性反演方法存在着收敛效率低，有时会陷入局部极值的问题。

DRBEM requires inversion of a matrix formed by approximation function, which makes this method inefficient for large problem.

在双互易边界元法中需要对由近似函数形成的矩阵求逆，这在计算大型的实际工程问题是很费时的。

The method of moments is an integral equation based numerical technique is to reduce the formal problem to a set of linear equations that can be solved by matrix inversion.

作为一种基于数字技术的积分方程，矩量方法用来将传统的问题简化为可以用矩阵转换来解决的一系列方程集。

In order to achieve accurate solutions of ill-conditioned GPS equations with a few observational epochs, the ill-conditioned normal equations of GPS rapid positioning was transformed as a function optimization problem. Then genetic algorithm was used to calculate parameter solutions, which avoided the inversion of coefficient matrix of normal equations.

为准确解算仅有少数几个历元的GPS载波相位观测数据的病态定位方程，将GPS快速定位的病态法方程求解问题转化为一个函数优化问题，应用遗传算法求解病态方程，避免了法方程的求逆运算，从而可以得到参数的近似最优解。

In order to resolve this problem, we bring forward a modified algorithm and apply it to pre-stack inversion of reservoir parameters (Poisson ratio, P-wave velocity and density).

本文在前人研究的基础上提出了改进的模拟退火算法，同时利用改进的算法反演了地层泊松比、纵波速度和密度。

The inversion of strong scatterer imbedded in the half-space is a practical, but very difficult problem of strong non-linearity.

半空间弹性波强散射源逆问题是一个实用而又难度很大的强非线性问题，而经典的Born迭代方法只适用于弱非线性问题。

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。