考虑到有机体的生存环境通常存在许多不确定因素,我们用系综平均的方法给出准物种和误差阈的数值模拟。
Considering various uncontrollable factors in the living environment, we use the ensemble average to give the simulation of quasi-species and error threshold.
模拟结果同时证实,除非水均衡误差也相当小,否则水头变化收敛指标较小时收敛的计算也不能保证计算结果有可靠的精度。
Verified by simulation results reliable accuracy of calculated results can not be guaranteed for small head change convergence index unless the error of water balance is small too.
理论计算和计算机模拟实验结果显示,模糊控制迭代算法的迭代结果其振幅均方误差为0.69%,振幅不均匀度为1.01%。
Computer simulation experiment, as well as theoretical research show that the amplitude mean square error of the iterative output derived from IAFC is 0.69%, and the amplitude un-uniformity is 1.01%.
其次,在弹性运动学模拟中,把轮胎视为一个刚性体,没有考虑轮胎刚度,这也是产生误差的一个因素。
Secondly, in the elastic kinematics simulation, the tire as a rigid body, without considering tire stiffness, which is a factor of error.
但用弹性运动学模型来进行运动学模拟后发现,这个计算误差并不大。
However, elastic kinematics model to simulate the kinematic and found that this calculation error is not significant.
计算机模拟结果表明,采用该方法完成误差校正后,用MUSIC算法能实现对信号DOA较为准确的估计。
Simulation results prove that, if the error is compensated by using the new method, signal DOAs can be accurately estimated using MUSIC algorithm.
模拟数据集上的实验结果表明,该算法具有较低的误差率和较高的效率。
The experimental results on synthetic datasets show that the proposed algorithm has low error rate and high efficiency.
将微带电路向空间的辐射作为一个端口来处理,成功地消除了由于忽略电路的空间辐射效应引入的电路数字模拟误差。
The errors caused by omiting of electromagnetic radiations of opened microstrip in numerical simulating of microstrip circuits is eliminated successfully by making one circuit port of the radiation.
给出了一种流动数值模拟中的基于误差估算的并行网格自适应有限元算法。
We present a parallel mesh adaptive finite element algorithm for numerical simulation of flows based on error estimation.
检验结果表明,该模型对水面蒸发时空变化规律的模拟误差较小,在大范围上具有较强的适应性。
The result of check demonstrate that the model simulated error of evaporation time-space change law is fewer, it have stronger adaptation in big scope.
本文还给出了弹道外推及误差估计的计算机模拟结果。
Computer simulation results of trajectory extrapolation and error estimation are also given in this paper.
模拟所得的潮汐调和常数同实测值相比,误差较小。
The error of tidal harmonic constant in simulation is slight as compared with the observed value.
基于离线仿真实验装置在模拟随机干扰、信号延迟、模型误差等方面存在不足,设计了一种在线仿真实验装置。
Due to the deficiency of offline simulation device in simulating random disturbance, signal delay and module error, an online simulation device is designed.
若以均方误差作度量估计优劣的标准,模拟显示当误差相关程度较高时,新估计优于文献中常见的矩估计。
Our simulation results show that for high errors correlation case, new estimate is superior over the moment estimate appeared in literature under mean square error criterion.
研究领域:高精度数值模拟方法及其误差估计理论、碳/碳复合材料力学行为研究、编织复合材料力学行为研究等。
The research fields have high precise numerical simulated method and its error estimate theory, the mechanical behavior of carbon/carbon composites, the mechanical behavior of braided composites, etc.
以穿透降雨为例,其模型模拟结果与实验比较,相对误差不超过2%,与野外观测比较,多次平均相对误差为6%。
Relative errors between simulation results of model and experiment were lower than 2%, and between model and field observation lower than 6% by the example of throughfall.
通过数值模拟,得到了随机相位误差对不同啁啾量的线性啁啾光纤光栅的影响。
With the help of computer simulation, the effects of random phase errors on the fiber Bragg gratings with different chirps are compared.
干涉仪雷达系统性误差的模拟计算表明:效果良好,优于主成分估计。
The simulation calculation of radar systematic error shows that the results are satisfactory and better than those of principal component estimate.
用幂函数模型描述的回归曲线以及根据试验参数得到模拟曲线与试验值比较误差均较小。
The errors of the data obtained using the power function model are very small from the test data.
在数字移动通信信道模型上,利用计算机模拟,在均方误差和误码率特性方面与其它均衡器算法进行了比较。
On a digital mobile radio channel model, using computer simulation, we compare the SWFTF DFE algorithm with other equalizer algorithms in the characteristics of mean squared error and bit error rate.
用幂函数模型描述的回归曲线以及根据试验参数得到模拟曲线与试验值比较误差均较小。
The errors are less as comparing the test data with regressive curve and simulative curve from test parameters using the power function model.
误差来自于重建和模拟两个方面。
The errors may come from both the simulation and the reconstruction.
本文提出一种通过时域非线性压缩-扩张改变FWCM采样步长,实现电路模拟误差分布控制的方法。
This paper provides a new method to regulate the step length of FWCM by nonlinear companding in time domain, so that the error distribution can be controlled in circuit simulation.
其结果显示距声源10公里外,只使用单一声速剖面之音传模拟会产生较大的误差;10公里之内差值小于1分贝。
The results showed that using single sound speed profile at source produced errors at simulation range large that 10 km.
运用自适应FIR滤波器来设计内模控制的控制器,采用IIR滤波器模拟误差通道。
An adaptive FIR filter is adopted as a controller in internal model control process and an IIR filter is used to simulate the error channel.
模拟的瞬态响应曲线与实验曲线较为一致,模拟误差在10%以内。
The numerical curve exhibits very good agreement with experimental results, and simulation error is less than 10%.
本文则用气候模式对作者提出的有地形数值模式中气压梯度力的误差扣除法进行了模拟检验。
Modelling tests are made in this paper to check the error subtraction scheme of the pressure gradient force in models with topography developed by the authors.
本文则用气候模式对作者提出的有地形数值模式中气压梯度力的误差扣除法进行了模拟检验。
Modelling tests are made in this paper to check the error subtraction scheme of the pressure gradient force in models with topography developed by the authors.
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