查询词典 exact solution

The exact expression for the solution and stable numerical algorithm are given based on the reproducing kernel method.

基于再生核方法，温度分布的精确表达式和稳定的数值算法被给出。

The feasibility of the sequential scheme based on the exact analytical solution and the Runge－Kutta method for systems of ordinary differential equations were examined.

分析了基于精确解析解的顺序求解数值算法、基于Runge－Kutta的方程组求解算法的可行性。

On the basis of exact stochastic nonlinear systems, the connection between the $L_2$-gain of the uncertain stochastic nonlinear systems and the solution to a certain HJI inequality is established.

在精确模型随机非线性系统$H_\infty$基础上，建立了模型不确定系统$L_2$增益和HJI不等式的可解性的关系。

Using the discrete dynamical system determined by the stroboscopic map, an exact 1-periodic solution of the system which is with Beverton-Holt function and the threshold conditions for its stability are obtained.

运用由频闪映射决定的离散动力系统，得到了具 Beverton-Holt 功能函数系统的精确1-周期解，并讨论了它在临界条件下的稳定性。

For the first patern, elastic dynamics is adopted to study the steady state rolling contact, elastic dynamics incorporating with rigid dynamics is adopted to study the non-steady state. For the steady state, the analytical solution is obtained, and for the non-steady state, the variational formulation to solve the problem numerically is derived For the later patern, the function type friction coefficient is introduced. On the basis of the quasi-stastic theories of constant friction coefficients, both the exact theory and the simplified theory of the function type friction coefficient are established, the computer programms for both the theories are also made out. Using the function type friction coefficient, Shen-Hedrick-Elkins theory's application range is extended to large creepage .

对于速度对接触体力学特性的影响，本文采用弹性动力学方法和弹性动力学与刚体动力学相结合的方法分别对稳态和非稳态两种情况进行了研究，得到了稳态情况的解析解，给出了对非稳态情况进行数值求解的变分公式；对于速度对相关物理量的影响，本文主要讨论了速度对摩擦系数的影响，在滚动接触准静态理论的基础上引进了函数型摩擦系数，建立了函数型摩擦系数的滚动接触准静态精确理论和简化理论，并分别编制了相关的计算程序，还用函数型摩擦系数将简便的Shen-Hedrick-Elkins理论的适用范围扩展到大蠕滑区。

In the course of establishing standard operating procedure, The temperature, time , the feasibility without decorticating and efficiency were investigated when alliinase was deactivated used a dry heating apparatus in tunnel type, but the efficiency can be achieved less than 70%, need to be improved; The reformative cribriform plate has been proved to be good in practice result in pulping enzyme-deactivated garlic without dehulling; The extraction efficiency achieved more than 90% when volumic ratio of 20% alcohol and water is 3 I 1 and 2:1 was adopted to extract alliin two times respectively; During exact filtration, the ratio of diatomite in precoating and filtration was 3% and 1% respectively, the losses of alliin adsorbed by diatomite in extraction solution were not remarkable. In the stage of alliin isolation by ion exchange resin, three simple and sensitive detected measures were successfully adopted to control the whole process; the efficiency of alliin isolation was similar to laboratory results; The alliin yield was over 50% in acidic fractions and the purity quotient of alliin achieved above 50% after drying; Furthermore, the phenomenon was found that losses of alliin were seriously affected by the temperature and time periods in concentration.

在制定中试生产标准操作规程中，考察了隧道式干热烘干机杀酶的温度、时间和效率，干热灭酶效率只能达到70%，待改进；改良的筛板使带皮打浆效果良好，证明非脱皮熟蒜打浆的可行性，减少了工序，降低了成本；提取过程中，20%酒精分别1∶3和1∶2提取2次，效率达90%以上；硅藻土板框过滤时，探索了精滤过程中提取液中预涂和过滤时硅藻土的比例分别为3%和1%，并考察硅藻土对蒜氨酸的吸附损失，滤液澄明度良好，蒜氨酸损失很少；在树脂吸附分离阶段，采用三种简便灵敏检测手段控制生产过程，分离蒜氨酸的效果与实验室一致，酸性流分中蒜氨酸收率可达50%以上，干燥后蒜氨酸纯度达50%以上；试验发现浓缩蒜氨酸洗脱液时温度和浓缩时间对蒜氨酸损失的具有很大影响。

A new heuristic solution algorithm is presented using an improved genetic algorithm. In the improved genetic algorithm, nondifferentiable exact penalty functions are used to transform a constrained optimization problem into a single unconstrained optimization problem, and hybrid crossovers and intermittent are applied to increase the search capability.

设计了基于改进遗传算法的启发式求解算法，该算法借助不可微精确罚函数将约束问题转化为单个无约束问题来解决，采用混合杂交和间歇变异提高算法的搜索能力。

Using the discrete dynamical system determined by the stroboscopic map, we obtain an exact 1-periodic solution of the system which is with Ricker function and obtain the threshold conditions for its stability.

运用由频闪映射决定的离散动力系统，得到了具Ricker功能函数系统的精确1-周期解，并讨论了它在临界条件下的稳定性。

By detailed comparion, it is shown that false scattering and ray effect exact not only in discrete ordinates method, but also in zone method,discrete transfer method,etc,and the influence of false scattering and ray effect on solution accuracy of radiative transfer eqution

离散坐标法由于可以很方便地处理入射散射项，因此离散坐标法在计算有散射的辐射问题方面要优于现有的其它方法，且易与流动方程联立求解。

An adaptive genetic algorithm in conjunction with multi-population genetic strategy, entropy-based searching technique with narrowing down space and the quasi-exact penalty function was developed to solve the optimization problem. The proposed method culd successfully balance the efficiency against precision, and close the optimal solution quickly and stability.

一个自适应的遗传算法被用于求解上述优化模型，该算法采用多种群遗传策略、信息熵控制的空间减缩搜索技术以及拟精确罚函数方法，较好地平衡了效率与精度之间的关系，从而能够快速而稳定地逼近最优解。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。