查询词典 gradient of scalar field

In addition,for both the cases of a uniformly accelerated two-level atom interacting with a quantized real massless scalar field and a uniformly accelerated multilevel atom interacting with a quantized electromagnetic field,we calculate the rate of change of the mean atomic energy from the point of view of a coaccelerated frame.

另外，对于匀加速的两能级原子与无质量的量子实标量场相互作用以及多能级原子与量子电磁场相互作用的情况，我们还在一个共同加速的框架下计算了原子的平均能量变化率。

The implementation processes of those two algorithms on smart card with cryptographic coprocessor are explained separately. The implementation process of RSA includes modular exponentiation and modular multiplication. The process of ECC includes the selection of base field and coordinates, scalar multiplication and field operation.

本文分别阐述了两者在带有加密协处理器的智能卡平台上的实现过程，包括RSA算法中模幂运算、模乘运算的实现；ECC算法中基域的选择、坐标系的选择、标量乘法和域算术运算的实现。

The author also study the treatment of three-dimensional current field and scalar field's picture.

本文还对三维流场和标量场的图形后处理进行了开发。

A brief introduction is given for the conventional unsolved problems of fluid dynamic field as well as a detailed description of the approaches about the scalar field theory.

对流体力学的当前研究热点问题给予了简单论述，对标量的计算模式的发展和计算流体力学在塔板上的应用的情况进行了较详细的论述。

Based on the process of establishing model, the theory and method of geometry model of establishing modern surveying data are discussed in this paper, including the establishing model technology of scalar quantity field data and vector field data.

从构造模型的一般过程入手，主要讨论了建立现代测量数据的几何模型的理论和方法，包括标量场数据与矢量场数据构模技术，提出了一些有益的结论，为测量数据可视化提供了技术基础。

Finally, We show that the cosmic string, inflation and dark energy origin from the same field-complex scalar field.

第三部分：指出宇宙弦、暴涨和暗能量可以用同一个复标量场来描述。

What this paper discusses rainbow gravitation to fall is cruel bilge model, derived of metric field and scalar quantity field disturb equation, analysed the property that density disturbs to change along with time.

本论文讨论彩虹引力下的暴胀模型，导出了度规场和标量场的扰动方程，分析了密度扰动随时间变化的性质。

In Chapter 2, we study exact solutions of the separated parts of Klein-Gordon field equation on some stationary and axisymmetry black hole backgrounds. We demonstrate that the radial and angular parts of a massive scalar field equation in the Kerr-Newman and Kerr-Sen black hole space-times satisfies the generalized spheroidal wave equation which is, in fact, a confluent Heun equation.

在第二章中我们研究了稳态轴对称黑洞背景几何中Klein-Gordon场方程分离变量部分的精确解，表明了Kerr-Newman黑洞及Kerr-Sen黑洞中有质量复标量场方程的径向部分和角向部分均满足广义椭球波方程，而后者实际上就是合流的Heun方程。

Firstly, a scalar and vector potential analysis models of tooth-layer magnetic field in a two-degree-of-freedom motor is developed, which is the same as standard hybrid step motor. By applying the finite element method, the distribution of the tooth-layer magnetic field is studied in detail. It provides an effective means for further calculation of performance and parameters of the motor.

首先，对两自由度电机产生转矩的关键部分——齿层区域的磁场进行了细致深入的分析，提出了齿层磁场的标量位和向量位分析模型，并通过有限元的数值计算，对各种情况下齿层磁场的分布规律从微观上进行了形象的分析和研究，为完整电机的进一步计算提供了有力的工具。

Before studies are mainly focus on the coupling between the fermion and gauge field(QED_3),while the coupling between scalar boson and gauge field is often neglected.

此前的工作主要集中在费米子和规范场的耦合(QED_3)方面，而标量玻色子和规范场的耦合往往会被忽略。

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。