space variable

Douglas and Dupont deeply discussed the spline collocation methods for nonlinear parabolic: initial-boundary value problems in one space variable. They considered the use of orthogonal collocation method combined with various time-stepping procedures and got, some optimal results.

Douglas与Dupont在文献[1]-[4]中深入讨论了一维非线性抛物初边值问题的样条配置法，他们把正交配置法与各类时间离散方法相结合，得到了很好的结果。

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Based on the Laguerre polynomials as the temporal basis function, there has not only the Galerkin testing to the spatial basis function but also to the temporal basis function, therefore the time variable is separated from the space variable completely in this method.

采用Laguerre多项式作为时间基函数时，计算过程中除了通常的对空间基函数的伽略金内积，还有对时间基函数的伽略金内积，这种方法将时间变量从计算过程中完全分离了出来。

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Based on the properties of chaotic phenomena, mutative scale chaos optimization algorithem ( MSCOA) reflects the chaotic variable to the range of variables optimized. high efficiency was obtained by continually minimizing the searching space of variable optimized and enhancing the searching precision.

变尺度混沌优化方法（MutativeScaleChaosOptimizationAlgorithem，MSCOA）利用混沌现象的特点，把混沌变量映射到待寻优变量区间，不断缩小优化变量的搜索空间和提高搜索精度，从而有较高的搜索效率。

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In this paper, a general analytical method& space variable transform method is presented for solving free vibration problems of thick cylindrical shell with arbitrary boundary conditions.

本文提出一种一般解析方法&空间变量变换法，用以求解任意边界条件下圆柱厚壳自由振动问题。

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Space Variable Transform Method for Free Vibration Analysis of Thick Cylindrical Shelf with Arbitrary Boundary Conditions

任意边界条件下圆柱厚壳自由振动分析的空间变量变换法

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By continually reducing the searching space of variable optimized and enhancing the searching precision, the method is of high efficiency.

该方法不断缩小优化变量的搜索空间并不断提高搜索精度，从而有较高的搜索效率。

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A hybrid optimization algorithm based on ant colony algorithms and chaos optimization algorithm is proposed to avoid searching blindly before reducing the searching space of variable optimized in chaos optimization algorithm. The algorithm utilizes the pheromone positive feedback effect to guide chaos search.

为了克服混沌搜索的盲目性，提出了一种蚁群算法和混沌优化算法相结合的混合优化算法，该算法利用蚁群算法中信息素正反馈的思想指导当前混沌搜索的区域。

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This paper proposes a library management method based on the reconstructing file space for variable and dynamic evolution of multimedia information, which regards multimedia informations as objects and the whole library as a file, and then dynamically manages this file.

针对多媒体信息的多样性和动态演变性，本文采用动态重构文件空间的方法去管理它们。

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Genetic algorithm was used in the route planning, and an encoding mode for expanding the way point and planning space with variable steps was designed.

将遗传算法运用到航路规划中，设计了一种扩展航路点和规划空间、分段变步长的编码方式。

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We always use finite element methods to approximate the space variable in both of schemes. The time variable keeps continuous in the semi-discrete scheme, but we use finite difference method to approximate the time variable in the total discrete scheme.

在两种计算格式中，空间变量均采用有限元方法逼近，在半离散格式中时间变量不离散，在全离散计算格式中，时间变量采用有限差分方法逼近。

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The method of judging the local convergence by the variance of the population's fitness and reducing the searching space of variable optimized is proposed, which enhances the searching efficiency.

采用了基于群体适应值方差的早熟判断机制，同时提出了一种缩小混沌搜索的变量空间范围的新方法，提高了搜索效率。

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Applying the obtained results above, we present a characteristic Petrov Galerkin adaptive scheme for unsteady convection diffusion problem in one space variable.

利用椭圆问题的上述结果，对一维非定常对流占优扩散问题，构造了特征Petrov Galerkin自适应算法。

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These two equations show that the time rate of change of information entropy density originates together from the drift, diffusion and production in coodinate space and state variable space;

这两个方程表明：信息熵密度随时间的变化率是由其在坐标空间和态变量空间的漂移、扩散和产生三者引起的；

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The variational coefficient which depends on space variable, new properties appear.

由于依赖于空间变量的变化系数的作用，将出现与具有齐次系数的方程完全不同的性质。

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By using Fourier transformation for space variable, Laplace transformation for time variable and convolution theorem for their inverse transformations, a general solution for dynamical problem of infinite beam on an elastic foundation is obtained.

然后对空间变量和时间变量分别进行Fourier变换和Laplace变换，利用逆变换褶积积分，得到了弹性地基无限长梁一般动力问题的解析解。

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Spatial variability theory is the theory of studying space variability of random variable.

空间变异理论是研究随机变量空间变异性的理论。

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In this paper is considered the long time behavior for Sobolev equation in single space variable. We have constructed semi-discrete and full-discrete pseudospectral approximation and obtained uniform optimal error estimates in time interval 0 ≤ t < ∞.

考虑一维Sobolev方程的大时间问题，构造了它的半离散和全离散拟谱逼近，获得了时间区间0≤t

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In order to avoid blind searching before reducing the searching space of variable optimized in chaos optimization algorithm, an optimization algorithm using two kinds of chaos is proposed.

为了克服混沌优化方法在缩小优化变量的搜索空间前所进行的盲目搜索，提出一种具有双混沌机制的优化方法。

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Compiler vendors provide extensions to the C language that allow the programmer to manually specify the memory space for each variable to improve the speed of access.

编译器供应商提供C语言扩展，允许程序员手动制定每个变量所需的存储空间，从而提高读取速度。

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A suggested theory of applied elastic Shell-structure for space thin-walled system of variable sections

变断面空间薄壁体系一种实用弹性壳体理论的建议

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According to the theory of space truss with variable angle, the effect of pulling force on torsional ultimate strength of members is analyzed. A formula for calculating ultimate strength of reinforced concrete tortional members is presented.

按照变角空间桁架理论分析了轴向拉力对构件抗扭极限强度的影响，并提出了钢筋混凝土构件抗扭极限强度计算式。

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Adaptive Petrov-Galerkin FEM for elliptic boundary problem in one space variable

一维椭圆边值问题的自适应Petrov-Galerkin方法

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Based on the study of formation mechanism and simulation method, two simulation methods of the aero-optical effects image degradation are proposed: the degradation simulation in a point spread function space, variable degradation simulation in point spread function space.

在对形成机理和仿真方法研究的基础上，提出了气动光学效应图像退化的两种仿真方法：点扩展函数空间不变的退化仿真，点扩展函数空间可变的退化仿真。

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It is based on the search of the value space for each variable. The advantage of systematic algorithm is that it can find the proper solution only if the problems solved by it are solvable.

该算法的基本思想是对变量的值域空间逐个进行搜索，其优点是只要问题有解，算法就一定能给出正确答案。

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Based on the test results of 8 tension-torsion members and pure torsion members, formulas for calculating the ultimate strength of tension-torsion members are derived according to the theory of space truss with variable angle.

本文依据8根拉扭构件和3根作为对比的纯扭构件的试验结果，按变角空间桁架模型推导出拉扭构件极限强度的计算公式。

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Phase space reconstruction of single variable time series and its application

单变量时间序列相空间重构及应用研究

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Modern control theory ( adaptive control, anticipatory control, state space variable analyze) was used according to some special objects.

针对较特殊对象采用现代的控制理论（预测控制、自适应控制、状态空间变量分析）进行讨论、优化。

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The experiment verifies the practicability of the coordinated control method based on the nonholonomic kinematic state space and the variable structure control with sliding mode method.

实验证实了这种基于非完整运动学状态空间和滑模变结构方法的协调控制策略的可行性。

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The Application of Space Variable Resolution to Automatic Focusing

基于分辨力空间变化的自动聚焦方法

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In a word, each method has its own advantages and disadvantages. When research different space variable, we must use appropriate interpolation method in view of different variable characteristics.

几种模拟方法各有优劣，研究不同的空间变量时，需要根据具体的情况确定合适的插值方法。

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