查询词典 hankel transformation

Analytical expressions for electromagnetic fields of a vertical or horizontal electric dipole over the finitely conducting plane are derived subject to the boundary conditions; Sommerfeld type integral contained in Hertz potential is expressed as the sum of two parts: zeroth order Hankel function and an absolutely convergent series of spherical Hankel function.

在此边界条件下，推导出有限导电平面上垂直和水平电偶极子电磁场的解析表达式；赫芝位函数中的索末菲型积分被表达成零阶汉克尔函数与绝对收敛的球汉克尔函数级数之和的形式。

Based on the special decomposition of Hankel matrix, we can transform the problem of approximating a given matrix with a positive semidefinite real Hankel matrix of lower rank to a smooth unconstrained optimization problem.

对矩阵的低秩Hankel半正定矩阵逼近，采用特殊的分解形式，可将其转化为一个无约束的优化问题进行求解，本文应用拟牛顿方法求解无约束优化问题。

In §6, necessary and sufficient condition for Hankel matrix with Hankel inverses revisited are given.

在§6中，给出了Hankel阵的逆矩阵仍是Hankel阵的充要条件。

Only with such characteristics, the movement equations can be expressed as matrices, and the idea of transforming the movement equations to the simplest form through a nonlinear transformation can be realized;(2) The form of Zi =Yi + YTH2i Y + Y7H3i Y(2)+ Y(2)T H4i Y(2)+ YTH5i Y(3) is adhibited in the nonlinear transformation, so that the multivalued problem caused by the nonlinear transformation is avoided, and the higher order transformation can be taken next;(3) The fourth order nonlinear transformation matrices H21,H31,H41 and H51 are derived, by which the original movement equations of electric power system is transformed to Jodan form in Z space;(4) By use of the fourth order nonlinear transformation, the approximate expression of the stability boundary is obtained, in Z space it is Z1= 0,in Y space it is Y1 + YTH21 Y + YTH31 Y(2)-i- Y(2) TH41 Y(2)+YTH51 Y(3)= 0;(5) The criterion used in this paper to judge whether the system critical unstable is simple and quick;(6) The method used in this paper is a direct method, and no need to construct an energy function.

正是由 于电力系统的运动方程具有这样的特性，才能写成矩阵的形式，通过非线性变换将电力系统的运动方程变换为最简单的线性形式的思想才能得以实现；（2）将通常运用于电力系统暂态稳定性分析的Normal Form变换的形式由 Yi＝ Zi＋ ZTh2riZ变形为 Zi＝ Yi＋YTH2iY＋YTH3iY（2）＋Y（2）TH4iY（2）＋YTH5iY（3），从而使得在对持续故障轨线实施同样的非线性变换以确定临界切除时间时，避免了非线性变换带来的多值性的问题，而只有在没有多值性问题的困扰下，才能采用较高阶的变换：（3）推导出了将原始电力系统系统的运动方程变换到Z空间的约当形式的非线性变换矩阵H21、H31、H41、HS1：（4）在运用四阶了「线性变换的情况下，给出了受扰动后系统的稳定边界的近似的解析表达，在Z空间为Z1=0，在y空间为： Y1+YTH21Y+YTH31Y(2)+Y(2)TH41Y(2)+YTH51Y(3)=0 （5）确定临界失稳的判据简单、快捷：对于一个复杂的电力系统，其稳定边界是相当复杂的一个高维曲面，即便是已知系统稳定边界的解析表达，要求出系统持续故障轨线何时与这一高维曲面相交，在数学上几乎是不可能实现的。

Based on these theories, it develops a GIS map projection software using Visual C++ as a platform. The software consists of two parts: analytical ordinal transformation and analytical athwart transformation. Analytical athwart transformation implements map projective transformation with coefficients obtained through numerical method, which is also the main idea of this paper. Map projective transformation process is illustrated with the examples of Mercator projection and conic projection.

地图投影建立了平面上的点(用平面直角坐标或者极坐标表示)和地球表面上的点之间的函数关系，而地理信息系统以平面直角坐标形式通过计算机图形学的方法表示2维或3维地理空间信息，因此，地图投影起到了地球空间与地理信息系统之间的坐标转换的桥梁作用[1]。

The method of Agrobacterium-mediated transformation is the most widely used in genetic transformation. To this day, only several genotypes such as Bobwhite and Yangmai158 have been used in transformation successfully. To widen the recipient genotypes, ten different genotypes were transformated by Agrobacterium-mediated In our study, transformation efficiency of B31706 and B31575 were significantly higher than Bobwhite. Moreover, regeneration rate and resistant plantlet rate of Agrobacterium-mediated genetic transformation in B31706 immature embryos callus was the highest one among the genotypes.

农杆菌介导法是目前应用较为广泛的转化方法之一，但在小麦中，只有包括Bobwhite和扬麦158在内的少数几个基因型被成功用于农杆菌介导的小麦遗传转化中，为了拓宽小麦农杆菌转化的受体基因型范围，本研究对10个不同基因型的材料进行了转化实验。B31706和B31575的转化率明显高于对照材料Bobwhite 。

With the analysis of the framework of MDA and categorization research on all kinds of model transformation methods and languages in existence, analyzing the applications of OCL in MDA considering the characteristic of OCL, three directions is emphatically studied in this paper:First of all, according to the declarative characteristic of OCL, this paper proposes a hybrid model transformation language named Hybrid-OCL by extending OCL from three aspects, the syntax and semantics is also defined. Hybrid-OCL can describe dynamic semantics, store model transformation information in order to support model transformation synchronization, and provides the integrated model transformation program framework.

本文以MDA整体框架为起点，分类研究了现阶段各种模型转换方法和模型转换语言，结合OCL的特性分析了其在MDA框架中的应用，并在此基础上重点研究了以下三方面内容：首先，根据OCL声明式语言的特点，选取三个角度对其进行扩展，从而设计产生了混合式模型转换语言Hybrid-OCL，详细定义了其语法和语义，并通过具体转换实例验证了这种扩展的可行性。

Japan take the Chinese feudalism law as the pattern law system legal framework to the modern Western Europe law pattern transformation, is the Japan legal framework first transformation, after World War II Japan abolishes the Fascist legal regime under the American law influence, through the democratized reform, the revision multitudinous department law, the social economic rules and regulations receives especially takes highly, is the Japan legal framework second transformation, along with the time vicissitude, the original legal framework occurrence"the system is weary", complied with the marketability, the informationization, an advanced age isochronism generation of tidal current, the legal framework has the omni-directional transformation is the Japan legal framework third transformation.

日本以中国封建法律为模式的律令制法律体系向近代西欧法律模式的转变，是日本法律体系的第一次转换，二战后日本在美国法影响下废除法西斯法律制度，通过民主化改革，修改众多部门法，尤其社会经济法受到高度重视，是日本法律体系的第二次转换，随着时代变迁，原有法律体系发生"制度疲劳"，顺应市场化、信息化、高龄化等时代潮流，法律体系发生全方位转变是日本法律体系的第三次转换。

In the exploration enterprise internationalization's developing process the afterheat excess pressure recycling use which serves under somebody's banner (afterheat electricity generation excess pressure use and so on) the construction energy conservation transformation (wall energy conservation transformation applies LOW-E midheaven glass glass pastes transformations and so on membrane uses plate pile technology and so on) the central air conditioning energy conservation transformation technology (cooling tower energy conservation transformation ice accumulation of cold technology source water source air conditioning technology Leng Meibeng cooled pump transformation and so on) three big prop energy conservation industry to be coquettish in respective domain each collar has won the global prestige and the oral traditions; The Group devotes for a long time to the new building materials the tidal current science and technology research the development passed the BSI IS09001 authentication becomes the world three big glass function membrane core manufacture manufacturer is the present global glass pastes one of membrane service industry largest scale enterprises.

ACER位于美丽的加拿大蒙特利尔市。是全球新型建材知名企业，集团在全世界范围内拥有 6400多名员工，以及数十家实力相当的亲密合作伙伴，为全球70多个国家提供一流服务。在探索企业国际化的发展过程中，旗下的余热余压回收利用建筑节能改造（墙体节能改造，应用LOW-E中空玻璃，玻璃贴膜等改造，采用支盘桩技术等），中央空调节能改造技术（冷却塔节能改造、冰蓄冷技术、地源水源空调技术、冷媒泵冷却泵改造等）三大支柱性节能型产业在各自领域各领风骚，赢得了全球性的声誉和口碑；集团公司长期致力于新型建材、潮流科技的研究、开发，通过了BSI的IS09001认证，成为世界三大玻璃功能膜核心制造厂商，是目前全球玻璃贴膜服务行业最具规模的企业之一。

In the exploration enterprise internationalization's developing process, the afterheat excess pressure recycling use which serves under somebody's banner (afterheat electricity generation, excess pressure use and so on), the construction energy conservation transformation (wall energy conservation transformation, applies LOW-E midheaven glass, glass pastes transformations and so on membrane, uses plate pile technology and so on), the central air conditioning energy conservation transformation technology (cooling tower energy conservation transformation, ice accumulation of cold technology, source water source air conditioning technology, Leng Meibeng cooled pump transformation and so on) three big prop energy conservation industry to be coquettish in respective domain each collar, has won the global prestige and the oral traditions; The Group devotes for a long time to the new building materials, the tidal current science and technology research, the development, passed the BSI IS09001 authentication, becomes the world three big glass function membrane core manufacture manufacturer, is the present global glass pastes one of membrane service industry largest scale enterprises.

在探索企业国际化的发展过程中，旗下的余热余压回收利用，建筑节能改造（墙体节能改造，应用LOW-E中空玻璃，玻璃贴膜等改造，采用支盘桩技术等），中央空调节能改造技术（冷却塔节能改造、冰蓄冷技术、地源水源空调技术、冷媒泵冷却泵改造等）三大支柱性节能型产业在各自领域各领风骚，赢得了全球性的声誉和口碑；集团公司长期致力于新型建材、潮流科技的研究、开发，通过了BSI的IS09001认证，成为世界三大玻璃功能膜核心制造厂商，是目前全球玻璃贴膜服务行业最具规模的企业之一。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。