Calculation of hardness scale for elements on density functional theory with generalized local density approximation and modified slater transition - state 以密度泛函论与局域近似法及改进过渡态计算软硬度
Through the analysis of the instance , we got a more accurate result as compare the s - y approximate method with tradion risk tolerance method 通过实例的分析，将-近似法与传统风险度量方法比较，得出了较为精确的结果。
In this thesis , the dispersion relation ( eigen value equation ) of dispersion compensation fibers is obtained by a scalar - wave analysis 本文首先用标量近似法推导了色散补偿光纤的色散方程，这个结论适用于任何三包层光纤结构。
The proposed fuzzy sliding mode controller does not require any knowledge of a nonlinear system and attempts to improve both transient and stability margins 建议的模糊滑动模式控制器是针对非线性系统在未知参数变化与结构下的强健追踪控制，其设计包含补偿器、衰减技术、模糊逻辑近似法。
After analysis the discretized density evolution theory and the differential evolution algorithm , a method is proposed to search optimal m - ldpc code for joint optimizing of the system 针对mimo空间下多级ldpc码的搜索问题,分析比较离散概率密度演化算法和高斯均值近似法的性能差异,并给出二者适用范围。
In each step of the sequential design , an individual controller is designed by the robust frequency response approximation design procedure , the controller order is reduced by a frequency response approximation method 在序列控制器设计的每一步，单个鲁棒控制器用鲁棒频域响应近似法获得，并使用频域响应近似法进行控制器降阶。
Furthermore , there are complex structures such as the engine fans at the end of the inlets . it ' s hard to deal with such problems if we use high frequency method or low frequency numerical value method only 对于厘米波段雷达而言，进气道属于电大尺寸目标，其终端有涡轮叶片之类的复杂结构，单用高频近似法或低频数值法都难以解决。
In this paper , on the base of paraxial approximations , we present a set of absorbing boundary conditions of 3d elastic wave equations and apply to the 3d elastic wave numerical modeling in isotropic medium 本文基于傍轴近似法提出了计算三维弹性波方程的吸收边界条件公式，表示了各边界面、边棱和角点处波场所满足的单程波方程，并在三维弹性波数值模拟中进行了应用。
We look at the problem of learning from examples as the problem of multivariate function approximation from sparse chosen data , and then consider the case in which the data are drawn , instead of chosen , according to a probability measure 并检视稀疏精选值中多变量函数近似法等这些从实例学习法所发现的问题，然后根据机率衡量，审思随机获得资料而非选定资料的案例。
In most situations , the contradictory requirements of quantum mechanics and general relativity are not a problem , because either the quantum effects or the gravitational effects are so small that they can be neglected or dealt with by approximations 在多数的情况下，量子力学与广义相对论的矛盾并不会成为问题，因为通常量子效应与重力效应之一会小到可以忽略，或可以用近似法处理。
