查询词典 vector potential

Secondly, based on the decomposition of gauge potential and the φ-mapping theory,φ-topological field theory of vector and spinor field is established and the Euler class is quantized by nodal indices of vector field.

作为它在量子力学中的应用，分别给出了自旋为零和自旋为1／2粒子的整数及半整数量子化条件，发现它们仅取决于物理系统的内部对称性。

Through detailed analyzing some influencing factiors of sand liquefaction, seven parameters were selected as assessment indexes. They are earthquake magnitude, peak ground surface acceleration, standard penetration value, specific penetration resistance, relative compaction, average particle diameter, and water table. The extension assessment model has been established that was applied to assessment of sand liquefaction potential. The model had been trained by the historical data and has been assessed in virtue of sand liquefaction from the historical data by simulating, and got a excellent result. After introduction of the support vector machine theory, this paper established the assessment model of sand liquefaction based on the support vector machine, and assessed in sand liquefaction from virtue data of some fields in home and overseas with the tool Libsvm, which was programmed based on the support vector machine theory. And got a good coherency between the assessement results and the actual liquefaction.

在详细分析影响砂土液化因素的基础上，选取了震级M、地面最大加速度g_、标准贯入击数N_(63.5)、比贯入阻力P_s、相对密实度D_r、平均粒径D_(50)、地下水位d_w等7个参数作为评价指标，建立了砂土液化势的可拓评价模型，并对历史数据进行仿真评价，取得了较好的应用效果；在对支持向量机的理论进行介绍后，本文建立了基于支持向量机的砂土液化势评价模型，并利用在基于支持向量机理论的Libsvm软件，对若干国内外场地的现场实测数据进行了评价，评价结果与现场表现基本上一致。

Baculovirus is a kind of double-stranded circle large DNA virus, which has been developed as an environment sound pesticide and a powerful vector of foreign protein expression, as well as a potential vector of gene therapy.

杆状病毒是一类大型环状双链DNA病毒，作为一种高效的生物杀虫剂、真核表达系统以及基因治疗载体的研究和应用，其分子生物学和侵染机制的研究也取得了很大进展。

Moreover, a new approach of support vector machine, potential support vector machine, is introduced based on analysis of problems faced by standard support vector machine, and green supplier evaluation model is established using potential support vector machine with policy of 1-υ-1 employed.

在分析标准支持向量机模型所面临问题的基础上，引入了一种新的支持向量机模型方法－P-SVM，进而以P-SVM为工具，采用支持向量机分类的1-υ-1策略建立了绿色供应商评价模型。

The simulation results show that the model based on potential support vector machine not only has much stronger generalization ability but also has the ability of feature selection which is not owned by other ones based on standard support vector machine.

数据仿真显示该模型同标准支持向量机模型相比不仅具有更好的推广能力，而且具备较好的特征变量自动选取功能。

D cultural knowledge is often taken as a cultural products provide freely, and makes the product of vector potential of greatly reducing the value of tacit knowledge.

在实践领域，公共文化知识通常被作为一种公共文化产品进行提供，这使得潜化在产品载体中的隐性知识价值大大降低。

SERID has following features:(1) The laser pulse is characterized by the vector potential A that is coupled to the Hamiltonian through the time-dependent Peierls substitution.

该方法有以下主要特点：(1)在电子Hamiltonian中通过时间有关的Peierls替代引入了辐射场与分子的相互作用。

In the fourth chapter, using the magnetic vector potential as the unknown variable, a mathematical model for numerical calculation of the magnetic field and loss distribution in 3-phase 5-limb transformer core is presented.

第三章针对变压器铁心结构的特点，对各向异性非线性边值问题的有限元分析方法进行了详细的阐述，并推导出了实用的N-R格式及单元分析格式，对具有多媒质单元的有限元分析方法进行了介绍，为变压器铁心磁场及损耗分布的数值计算奠定了基础。

The problem is how to consider the relativistic corrections to this potential. Adopting the assummation that the quark interaction is the sum of the usual one-gluon direct exchange and the mixture of linear scalar and vector potentials, we structure the relativistic corrections of order v2/c2to the Cornell potential, including the annihilation potential for the quark and antiquark of the same favors which plays the same role with the one-gluon direct exchange at short distances.

采纳库仑势源于单胶子直接交换，而线性禁闭源于标量和矢量的混合，同时考虑在短程区域与单胶子直接交换起同样作用的同味正反夸克的湮灭，构造了静态夸克-反夸克势到v~2／c~2级次的完全相对论修正，并拟合计算了重介子偶素的能谱，讨论了相对论修正对重介子偶素能级分裂的作用。

Then by using FEM to calculate the direct and quadrature axis magnetic fields, the steady-state reactances x〓 and x〓 are determined with definition method and vector potential method when μ〓 equals ∞ and voltage equals 0.1U〓 and U〓 respectively.

接下来，以有限元为工具，在直轴和交轴磁场下，用定义法和矢量位法，分别确定μ〓=∞、0.1U〓和U〓状态下的稳态电抗x〓和x〓以及在额定负载下确定x〓和x〓的饱和值，并研究了直、交轴间的耦合电抗以及用路的方法确定稳态电抗。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新