条件方程
- 与 条件方程 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
An analytical model describing the dispersion with an exponential dispersion function is built, which be transformed into CDE problem with variable coefficient, using hypergeometric function and inversion technique, an analytical solution for two type boundary conditions is obtained.
文章对于具有指数弥散函数的弥散过程建立了对流-弥散微分方程模型,应用积分变换将问题转化为具有变系数的常微分方程问题;对于两种类型的边界条件,应用超几何函数和反演技术得到了问题的解析解,并分析了指数弥散过程和常数弥散过程的不同性质。
-
They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.
本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论,包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学,文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。
-
The Adolph accurate dynamic model cannot describe the movement of the reciprocating pump valve at the moment of opening, thereby a new accurate dynamic model for describing the motion law of an automatic conical valve is set up, in consideration of the condensability of the fluid, the Westphal's effect, the condition of the continuous flow of fluid and the dynamic characteristic of pump valve's motion.
针对阿道尔夫往复泵泵阀精确运动微分方程在泵阀开启瞬间存在奇点的不足,综合考虑液体可压缩性、魏氏效应、液体连续流条件及泵阀运动的动力特性,建立了描述往复泵自动锥形阀运动规律的精确运动微分方程。
-
In order to get the principle of cell distribution in buffer, the local rate function is obtained, which can be expressed in detail with the help of DuBoisReymond equation and conditional integral. This gives us the system's rate function.
为了能够分析缓存器中分组信息变化的规律,论文首先给出了主干系统的本地速率函数,利用变量积分的DuBois-Reymond方程,给出了本地速率函数所满足的微分方程,在条件积分的约束下求得本地速率函数表达式,由此求得系统的速率函数。
-
Using GARCH( 1,1 ) model with dummy variables in return equation and modified GARCH( 1,1 ) model with dummy variables in conditional variance equation, the writer of this paper conducts an empirical investigation into the day-of-the-week effect on returns and volatility in open-end fund during the period of June 1,2003 and August 18, 2005 in China respectively.
运用均值方程含有虚拟变量的GARCH(1,1)模型和条件方差方程含有虚拟变量的修正的GARCH(1,1)模型,我们分别对2003年6月1日至2005年8月18日期间中国开放式基金收益的周内效应和收益波动性的周内效应进行实证研究,结果显示,在研究期间内样本基金收益及收益的波动性在周三这一天显著不同于其他交易日,即存在"周三效应"。
-
Conditional stability.
反问题,边值问题,不适定问题,偏微分方程,积分方程,条件稳定性,数值分析
-
The model can be designed according to the absolute normal model scale or the distorted model scale, in consideration of the conditions of the test site and water supply capacity etc., this experiment designs model in the light of the distorted model scale . The distorted model scale can satisfy the similarity conditions of surge equation and water hammer equation.
试验模型可以设计成正态,也可以设计成变态,考虑到试验场地、供水能力等因素,模型按变态设计,模型比尺同时满足了波动方程和水击方程的相似条件。
-
In the first charpter,response variable is generalized to q dimensions, we propose the concept of QMLE and quasi function in nonlinear models, then under mild conditions, we prove that there exists the solution_n with probability 1 for sufficiently large n, and obtain the strong consistency, some results of asymptotic normality, meanwhile consistent estimator of σ~2 for QMLE for heterosedastic nonlinear models is presented.
在第一章中,我们首先将响应变量由一维推广到了多维,得出了非线性模型的极大拟似然估计的定义和拟似然方程,然后在一定的条件下,证明了当样本量n充分大时,拟似然方程以概率1有解??_n且收敛于参数的真值(即定理1.2),并且给出了极大拟似然估计的渐近正态性(即定理1.3,1.4),最后考虑了异方差非线性模型的离差参数σ~2的相合估计(即定理1.5)。
-
Based on the equilibrium equation of an arch element the cubic nonlinear dynamic model with second order is established and the nonlinear differential dynamic system without constant term is obtained through a transfer process of T=U+b. Hence three fixed points and the homoclinic orbits are found. The critical condition of the chaotic vibration of the elastic arch is given by using the method of Melnikov function. The numerical results of the stationary and chaotic motion are given and discussed.
首先利用拱的单元平衡方程建立了拱的二阶三次非线性动力学模型;然后通过变换使方程转化为不含常数项的非线性微分动力系统,并由此得到无扰动系统的3个不动点与同宿轨道;再用Melnikov函数法给出了发生混沌的临界条件;最后给出了该系统出现定常运动和混沌运动的数值结果。
-
The paper presents a new method,based on the essence of continuity equation,to specify the BCs for pressure correction equation.
提出从连续性方程本质出发确定压力修正方程边界条件的新方法。
- 推荐网络例句
-
Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
-
Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
-
This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。