查询词典 hankel transformation

The cell to cell contact could facilitate the transformation. It was found that the B. subtilis strain, cultured not only in MM medium, but also in LB medium, could be transformed by cell released or chemically extracted DNA by the method of agar plate transformation, although the LB medium was previously believed not to support this process in traditional transformation protocol.

结果表明，该菌在这两种培养基中培养时均可在对数生长期向培养液中主动分泌有生物活性的DNA，且细胞间接触有利於转化过程的进行，暗示在本实验条件下DNA供体细胞可能具有某种主动功能。

This thesis has construed the functions of sights in the programming process of historical cities and its trend of development in the future through the analysis of the various changes in the evolutional process of the cities: the transformation from the unconscious sight construction to the intentional planning which embodies the character of the ruling class, the transformation from the demolishment and renewal of the sights during dynastic changes to the maintenance of its old features, and the transformation from the radial pattern to the reasonable division of regions.

全文通过从城市的演变过程中伴随的无意识的景观建设到有意识的体现统治阶级性质的布局设计；从改朝换代中的毁坏又更新到当今为了保持原有风貌及体现历史名城的特色所作的维护工作；从集中一点放射状规划城市布局到合理划分不同性质区域的各种变化来分析景观在历史名城规划进程中的作用及未来的发展趋势。

We present the fundamental theories of Noether symmetries and conserved quantities of mechanco-electrical dynamical systems, including variation principle of the system, Noether symmetry transformation, Noether quasi-symmetry transformation, generalized Noether quasi-symmetry transformation, Killing equations, Noether theorem, the form of conserved quantity. And then the basic theory of Lie symmetry is advanced, including the determining equation, structure equation and the form of conserved quantity.

给出机电动力系统的Noether对称性和守恒量基本理论，包括系统的变分原理、Noether对称性变换、Noether准对称性变换、广义Noether准对称性变换、Killing方程、Noether定理和守恒量的形式；给出机电动力系统Lie对称性的基本理论，包括确定方程、结构方程以及守恒量的形式。

During the latest fifteen years a great progress has been achieved on transgenic research of the main crops including soybean, maize, rice, and wheat. Almost all the transformation techniques have been successfully used in these main crops. Especially for the Agrobacterium mediated transformation, not only successes it in soybean, a recalcitrant dicot plant to transformation, but also in rice, maize and wheat of monocot plants.

近15年来，大豆、水稻、玉米、小麦等主要农作物转基因研究取得了较大进展，几乎各种遗传转化方法在这些作物上都取得了成功，尤其是农杆菌介导法，不仅在难转化的双子叶作物大豆上取得了成功，而且在单子叶作物水稻、玉米、小麦上先后取得了突破。

The accelerated algorithm of volume rendering based on textures mapping and the wavelet-based multiresolution volume rendering in network are performed by using OpenGL 3D visualization technique. From the point of view of computer graphics, 3D visualization mechanism of volume rendering based on OpenGL textures mapping is studied, including modelview transformation, projection transformation, perspective division, viewport transformation and the ways to embed textures mapping and blending in above four transformations.

利用OpenGL三维可视化技术实现了本文所提出的基于纹理映射的体绘制加速算法和网络环境下基于小波的体数据的多分辨率体绘制，并从计算机图形学的角度，研究了基于OpenGL纹理映射技术的体绘制的三维可视化流程，包括OpenGL的模视变换、投影变换、透视除法、视区变换，以及纹理的定义、映射与融合等步骤在上述四个变换中的嵌入方法。

After discussion of the relation of MR〓 and ALT, an algorithm proposed by Zhongping Qin and Huanguo Zhang, two conclusions are obtained: if a weak key can be successfully attacked by the method of reduced echelon matrix, it can also be successfully attacked by a linear R〓R〓 transformation; meanwhile, there exists such a weak key that can be successfully attacked by the algorithm MR〓 or linear R〓R〓 transformation, but this key can not be successfully attacked by the algorithm ALT. For a NFA, according to the number of solutions for the image equation of its R〓R〓 transformation, there exist two sufficient criteria about its weak invertibility and weak inverse.

通过比较MR〓与覃中平和张焕国提出的攻击FAPKC加密情形的算法ALT，证明了如下结果：凡用约化梯阵方法能攻击成功，用线性R〓R〓变换也能攻击成功；同时，存在着用算法MR〓或线性R〓R〓变换攻击成功的弱密钥，用算法ALT攻击失败。

MethodWiththe competent germinating epicotyl of cotton as receptor in exogenous gene transformation,NPTIIgene carrying selection marker and GFPreporter gene were mediated into cotton by agrobacterium-mediated transformation.The pre-culture time,bacterial-i mmersing ti me,co-culture ti me and antibiotics concn.,etc of using agrobacterium-mediated transformationinthe transformation of competent germinating epicotyl of cotton were studied.

方法以棉花感受态萌动的上胚轴作为外源基因转化的受体，用农杆菌介导法将携带有筛选标记NPTII基因及GFP报告基因导入棉花，研究了农杆菌介导法用于棉花感受态萌动上胚轴转化的预培养时间，浸菌时间，共培养时间及抗生素处理浓度等。

By using the method of the gauge transformation,this paper obtains the gauge transformation of Eigenvalue problems of energy dependent potentials and the Backlund transformation.

用规范变换的方法，导出了位势依赖于能量的特征值问题的规范变换及相应的贝克隆变换。

A relativistic transformation of generalized coordinates is discussed and it is found that the first law of thermodynamics and the equation of state of an ideal gas are invariant with respect to the relativistic transformation of generalized coordinates , so that the existence of relativistic transformation of generalized coordinates is reasonable.

讨论了一个涉及热力学的广义坐标的相对论变换，发现热力学第一定律和理想气体状态方程对广义坐标的相对论变换具有不变性，表明广义坐标的相对论变换有其存在的理由

This chapter emphasizes on the five issues. Firstly, the relation between the transformation from savings to investment and the fund's formation. Its purpose is to reveal the formation way of the funds and how to improve its efficiency of utilization. Secondly, the analysis of the supply behavior of the transformation from savings to investment. It mostly analyzes the savings' behaviors of the government, enterprises and residents and their economic effects. Thirdly, the analysis of the demand behavior of the transformation from savings to investment. It stresses on discussing the enterprise's choices of the financing structures and forms on the premise of pursuing the maximum profit, through analyzing the basic features of each social financial entity. Fourthly, it clearly points out the kinds of transformative mechanism from savings to investment and its impactive factors. Finally, it emphases the importance and realizing path of the transformative mechanism in our country that is changed from combining bank with capital market to the market leading, through analyzing the mechanism and its practice in China.

本章重点讨论五个问题：第一，储蓄向投资转化与资金形成的关系，目的是揭示资金的形成途径及如何提高其使用效率；第二，储蓄向投资转化的供给行为分析，主要分析政府、企业和居民的储蓄行为及其经济效应；第三，储蓄向投资转化的需求行为分析，通过分析社会各融资主体的基本特征，重点探讨企业在追求收益最大化前提下融资结构和融资形式的选择；第四，储蓄向投资的转化机制，主要探讨了储蓄向投资转化机制及其制约因素；第五，通过对中国储蓄向投资转化机制的历史考察和现状分析，明确指出了我国储蓄向投资的转化机制由银行与资本市场并存型转向市场主导型的重要性和实现路径。

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。