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By means of the dual of Said-Ball basis, the Marsden identity is got in terms of Said-Ball basis, and a degree reduction algorithm for Said-Ball curves is presented through the transform from Bezier curves to Said-Ball curves.

利用Said-Ball基函数的对偶基，得到幂基函数在Said-Ball基下的Marsden恒等式，及从Bézier曲线到Said-Ball曲线的转换。并给出Said-Ball曲线的降阶赋值算法。

The method of interpreting parameters using production logging data of early shut-in period is constructed on the basis of the Duhamel's principle, the feasibility and reliability of this method are analyzed on the basis of the interpretation results using field data.

文中利用杜哈美原理建立了用生产测井资料解释地层参数的方法，用实测资料的解释结果对本文方法进行了分析。

They are also aiming at the areas, including molecular control of neural differentiation from uncommitted ectoderm, molecular basis for diversity of neurons, molecular basis for fine positional information during early embryogenesis and in vitro differentiation of ES cells into neural tissues etc.

他们还致力于未成熟外胚层神经分化的分子控制；神经元多样性的分子基础；早期胚胎发育阶段，细微的位置信息的分子基础；进入神经组织的ES细胞的微分化等领域的研究。

The electrochemical performance for the research provides the theoretical basis for analysis and material basis.

为下面的电化学性能的研究提供了物资基础和理论分析基础。

We can not apply Galerkin methods with radial basis functions to the first boundary value problem (the Dirichlet boundary value problem) of the second-order elliptic equation, because it requires that the approximate functions should fit the essential boundary condition, while the spaces spanned by the radial basis functions fails to satisfy this kind of boundary condition, and it is the same for the higher-order elliptic equation.

我们不能直接应用这样的无网格算法求解二阶椭圆型方程的第一类边值问题(Dirichlet边值问题)，因为第一类边界条件是本质边界条件(对二阶椭圆型方程为Dirichlet边界条件)，而径向基函数的支集通常是全空间，由它们所生成的近似函数空间一般不满足这样的条件。

Currently serves as the President of Fine Arts College of Guangxi Normal University, professor, Master student's director, the member of Chinese Book Association, Gungxi Art Association, the Japan Basis Shaping Institute, and Japan Design Association, curator of art museum, the president of Guilin Basis Shaping Research Institute, the centre director of Guilin and Japan's Culture Studying Institute and Culture Exchange Centre, the editor of "Magnificent Spectacle of Fine Art" and Ceramics Art and Science, the Master student director of Guangxi Art Academy, visiting professors of Europe Asia University, Shaoxing Academy, Guilin Engineering College, and Guangxi Occupation Tec.

现为广西师范大学美术学院院长、教授、硕士生导师，中国书协、广西美协，日本基础造型学会、日本设计学会会员，师础坚艺术馆馆长，桂林基础造型学研究会会长，桂林日本文化研究所及桂林研美文化转播交流中心主任，《美术大观》、《陶瓷艺术与科学》编委，广西艺术学院兼职硕士生导师，马来西亚欧亚大学、绍兴文理学院、桂林工学院、广西职业技术学院等客座教授。

In this paper, mathematical analysis, linear algebra is more material as the foundation, on the basis of previous studies, will solve a number of the function extreme value methods, such as distribution method, elimination method, the discriminant method, mean inequality method, the geometric method, vector method and derivative method, and so to summarize, and on this basis is given for each method the corresponding examples to illustrate for readers to reference and understanding.

本文以数学分析、线性代数更教材为基础，在前人研究的基础上，将求解函数极值的若干方法，如配方法、消元法、判别式法、均值不等式法、几何法、向量法和导数法等等进行归纳总结，并在此基础上针对每一种方法给出相应的例子加以说明，以便读者参考和理解。

Position management is the basis of human resource management, the core basis of enterprise management and also the hard core of fieldwork management.

岗位管理作为人力资源管理的基础，也是企业管理的核心基础，而且是现场管理的核心内容。

The objective of this study is to dissect the genetic basis of the related traits of florescence for hybrid seed production, and provide the genetic basis for raising hybrid seed production and maize breeding.

本研究拟通过对玉米制种花期相关性状的遗传分析，为玉米制种产量的提高和玉米育种提供理论基础。

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。