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加权残差
相关语句
  weighted residual
     The Dimension-Diving Coupling Method of Finite Element and Weighted Residual for the Field Problems
     场问题的有限元──加权残差分维耦合法
短句来源
     Introduction to Weighted Residual Method
     加权残差法介绍
短句来源
     The Region-Dividing Coupling Method of Finite Element Method and Weighted Residual Method in the Field Problem
     场问题的有限元──加权残差分区耦合法
短句来源
     The Region-Dividing Coupling finite element method and weighted residual method in the solution of field proplems is advanced in this paper──the different regions of the field are handled alone with finite element method or with weighted residual method, then synthesizes them with the concerted conditions on the boundary lines between the regoins.
     本文提出了场问题求解的有限元──加权残差分区耦合方法:在场的不同子域内分别用有限元法或加权残差法求解并通过交界处的协调条件综合起来。
短句来源
     For each sample, weight residuals (WR) and absolute WR were calculated. Results Median weighted residual (MDWR) of Schuttler model was less significantly than that of all other models in ≥65y group. Predicted- measured concentration with Schuttler model had best goodness of fit in all patients during infusion (P<0.01).
     结果 Schuttler模型在Ⅰ组病人,中位数加权残差(MDWR)显著小于其他三种 参数(P<0.01),对所有病人输注期间预测浓度 实测浓度的拟合程度最好(P<0.01)。
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  “加权残差”译为未确定词的双语例句
     Weight residuals (WR) and absolute WR, median weight residu-als(MDWR)and median absolute weight residuals (MDAWR), objection functions were calculated.
     计算样本加权残差(WR)和绝对值加权残差(absWR)、个体内中位数加权残差(MDWR)和中位数绝对值加权残差(MDAWR)、预测和实测浓度的目标函数。
短句来源
     Methods Sixteen patients, ASA graded Ⅰ-Ⅱ, received propofol 60 ml/h (≥65y) or 75 ml/h (<65y) respectively. Arterial blood samples were collected during and after infusion for measurement of plasma concentration. Using four documented pharmacokinetic models to predict the plasma concentrations of propofol.
     方法 选择ASAⅠ~Ⅱ级的择期手术病人16 例,≥65岁(Ⅰ组)病人静脉输注丙泊酚速度60ml/h,<65岁(Ⅱ组)者输注速度75ml/h,抽取动脉血 分析药物血浆浓度,用四种药代动力学模型预测丙泊酚血浆浓度,计算样本加权残差(WR)、绝对值 加权残差(absWR)。
短句来源
     In Chapter 5, a newly developed method, an alternating normalization-weighted error (ANWE), was utilized to three-way excitation-emission matrix fluorescence data analysis for second-order calibration.
     第五章应用一个新的化学计量学算法—交替归一加权残差法(ANWE)进行激发-发射矩阵荧光数据分析应用。
短句来源
     A combined detection logic, including weigted residual calculation and predicted residual, and a ill data identifying algorithm based on predicted residual are used for detection of ill value, and the evaluating precision is assured.
     不良数据检测上采用加权残差与预报残差相结合的组合检测逻辑以及基于预测残差的多不良数据辨识法,保证了估计精度。
短句来源
     We substitute weighted sum of squares for sum of squares what filter eigenvalue's method , which is obviously amended the systemic error,and greatly raised the precision of model in principal regression;
     在主成分回归中我们采用主成分的加权残差平方和来替代仅用残差平方和来筛选特征值的方法,明显改善了系统的误差,使得模型的精确度有了较大的提高;
短句来源
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  相似匹配句对
     Introduction to Weighted Residual Method
     加权残差法介绍
短句来源
     Weighted Shift Operators
     加权移位算子
短句来源
     METHOD OF WEIGHTED RESIDUALS AND THE APPLICATION TO TRANSFER PROCESSES OF CHEMICAL ENGINEERING
     加权残差法及其在化工传递中的应用
短句来源
     Weighted Sorting
     加权排序法
短句来源
     \$ estimation.
     估计的残差
短句来源
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  weighted residual
New models of film flows down inclined planes have been derived by combining a gradient expansion at first or second order to weighted residual techniques with polynomials as test functions.
      
The Principle of Minimum Potential Energy for the problem is obtained by means of weighted residual method, and its Generalized Variational Principle by means of identified Lagrange multiplier method.
      
A weighted residual method for elastic-plastic analysis near a crack tip and the calculation of the plastic stress intensity fac
      
In this paper, a weighted residual method for the elastic-plastic analysis near a crack tip is systematically given by taking the model of power-law hardening under plane strain condition as a sample.
      
On such a basis, a perturbed-weighted residual finite element model for small Deborah number situations is formulated.
      
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Based on the common form of the two-dimensional Saint-Venant equations, some improvements in the Galerkin finite element method, one of the weighted residual methods, have been made. Besides the triangular elementswith three or six nodes, two new types——one with four nodes and theother with one curve side are proposed in this paper. These four types of elements can be combined in use to describe the surface of water body, using a quadratic spline to fit its curvilinear contour more satisfactorily. La order to...

Based on the common form of the two-dimensional Saint-Venant equations, some improvements in the Galerkin finite element method, one of the weighted residual methods, have been made. Besides the triangular elementswith three or six nodes, two new types——one with four nodes and theother with one curve side are proposed in this paper. These four types of elements can be combined in use to describe the surface of water body, using a quadratic spline to fit its curvilinear contour more satisfactorily. La order to calculate rapidly the integrals in the Galerkin equations, five influence coefficients have been introduced for each type of elements. Tables of the coefficients for straight-sided elements are given through analytical integration to avoid numerical calculation. Various types of boundary conditions and their treatment for either the fixed or the movable boundaries interfaced both with land and with neighboring water bodies, on the latter of which exchanges of mass and momentum take place lumpily or distributively, are proposed so as to represent practical problems as well as possible. Then the wellposedness and accuracy of problems are analyzed. In addition, skills aimed at increasing the speed of solution and decreasing the requirement of computer memory are listed, and a general-purpose program package has been worked out on PDP-11/23 computer to facilitate the utilization. Finally, some primary experience for improving numerical stability is presented through an example.

本文从常用的二维圣维南方程组出发,对加权残差法中的伽辽金有限元算法作了若干改进。除常用的三及六个节点的三角形单元外,提出四节点直边和三节点单曲边三角形单元。在水面周边为曲线情况下可将这四种单元组合使用,利用二次样条使计算区域的边界形状更好地拟合。为了便于计算伽辽金方程中的积分项,对每种单元引入五个影响系数,其中对直边单元通过解析求积列成表格以供查用,避免了数值求积。对固定的及可动的水面周边,拟定了多种边界条件(包括陆地边界及存在分布式或集中式水量动量交换的水体边界)及其处理方法,以反映实际问题可能出现的边界状况;并对问题的适定性和精度等进行了分析。介绍了加快计算速度和减少内存要求的技巧,据以在PDP-11/23小型计算机上研制成较为通用的程序包以利推广应用。还通过一个算例简述了所获得的提高计算稳定性的初步经验。

Two dynamic models, one of which was used to simulate the transient behavior in binary distillation columns and another for rectifying and stripping section separately, are applied to a ternary mixture, benzene-toluene-ethylben-zene, in a large column with 48 trays. Changing the relux ratio by ±5% and ±10%,reboiler duty by ±2.5% and ±5%, the feed flowrate by ±5% and the concentration of benzene, light key component, in the feed stream from 0.5 to 0.45, while the concentration of toluene, heavy key component,...

Two dynamic models, one of which was used to simulate the transient behavior in binary distillation columns and another for rectifying and stripping section separately, are applied to a ternary mixture, benzene-toluene-ethylben-zene, in a large column with 48 trays. Changing the relux ratio by ±5% and ±10%,reboiler duty by ±2.5% and ±5%, the feed flowrate by ±5% and the concentration of benzene, light key component, in the feed stream from 0.5 to 0.45, while the concentration of toluene, heavy key component, changes from 0.4 to 0.45, and using the method of weighted residuals to treat the set of differential equations, the compositions and other variables in the column are solved when the column reaches steady-state operation. The computational results are satisfactory since the RMS errors of liquii compositions in the column are less than 4×10-3 for most conditions and the computer time is reduced by 60%.

本文将用于二元系精馏塔的分段及整体模拟的两个动态模型应用到分离苯-甲苯-乙苯混合物具有48块实际板的一个大型精馏塔上,回流比分别变化士5%,±10%;再沸器热负荷分别变化±2.5%,±5%;进料流率变化土5%;轻关键组份苯在进料中的浓度从0.5变为0.45;同时重关键组份甲苯的浓度从0.4变为0.45。采用加权残差法处理微分方程组,然后解出当精馏塔最终趋于稳态时的组成及其他有关参数。计算结果表明,当计算机所耗时间节省60%时,在绝大多数情况下,全塔液相组成均方根误差小于4×10~(-3),结果是令人满意的。

Dynamic models for distillation columns generally involve a large number of dependent varibles, which severely limits thier usefulness. The author,in cooperation with Prof. E.H. Wissler in University of Texas at Austin,employed natural spline functions of degree three as basic functions to simulate the composition profiles in the distillation column fully for whole one and separately for the rectifying and stripping section. In order to reduce the number of variables the method of weighted residuals was used...

Dynamic models for distillation columns generally involve a large number of dependent varibles, which severely limits thier usefulness. The author,in cooperation with Prof. E.H. Wissler in University of Texas at Austin,employed natural spline functions of degree three as basic functions to simulate the composition profiles in the distillation column fully for whole one and separately for the rectifying and stripping section. In order to reduce the number of variables the method of weighted residuals was used to treat obtained set of non-linear differential equations. The results were obtained by means of numerical method. These two models were applied to the binary and ternary distillation columns with 48 and 39 trays, respectively. By changing reflux ratio by ±5%,±10%, he duty of reboiler by ±2.5%,±5%, the flowrate of feed by±5% and the composition of the key components in feed by 10%, the compositions and other variables at each tray were obtained when the column reached steady-state. It was shown from computational results that the computer time was saved by more than 60% with satisfied accuracy.

精馏塔的动态模型常常涉及到许多变数,这就严重地限制了它的应用,作者采用三阶自然样条函数作为基本函数整体模拟以及分别按精馏段和提馏段模拟浓度变化曲线以达到减少变数的目的。采用加权残差法处理非线性微分方程式组,最后用数值方法求解。作者将这两个动态模型分别用于二元系及三元系的具有48层及39层实际板的精馏塔,使回流比分别变化±5%、±10%,再沸器热负荷分别变化±2.5%,±5%,进料流率变化±5%,关键组份在进料中的组成变化10%,解出当精馏塔最终达到稳态时的组成及其他有关参数,在达到令人满意的精确度的情况下计算机时间可节省60%以上。

 
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