MULTI-DIMENSIONAL MARKOV CHAIN–BASED ANALYSIS OF CONFLICT PROBABILITY FOR SPECTRUM RESOURCE SHARING

In this paper, we consider the optimal problem of channels sharing with heterogeneous traffic(real-time service and non-real-time service) to reduce the data conflict probability of users. Moreover, a multi-dimensional Markov chain model is developed to analyze the performance of the proposed scheme. Meanwhile, performance metrics are derived. Numerical results show that the proposed scheme can effectively reduce the forced termination probability, blocking probability and spectrum utilization.     

Block Entanglement in the Single-Hole Hubbard Model

We investigate the distribution of the entanglement of the one-dimensional single-hole Hubbard model （HM） and study the relationship between the entanglement and quantum phase transition in the model. The von Neumann entropy of a block with neighbouring spins L for a single-hole HM is calculated using the densitymatrix renormalization group. The distributions of the entanglement entropy in the ground state, as a function of block length, show a dramatic effect, i.e. effectively decoupling with the centres, no matter how the Coulomb interaction u 〉0 or u 〈0. Contrarily, for the Coulomb interaction u = 0 or close to zero, the entanglement entropy in the single-hole model reaches a saturation value for a certain block size. For a fixed size L = 40, the ground state entanglement entropy measure, as a function of u1 shows a peak corresponding to the critical quantum phase transition.     

线电荷与圆柱导体间的相互作用

利用镜像法,在计算线电荷与接地圆柱导体间的相互作用的基础上,通过增加镜像电荷的方法,进一步分析求解得出了线电荷与绝缘圆柱导体、与电源连接的圆柱导体间的相互作用.     

社交网络中基于贝叶斯和半环代数模型的节点影响力计算机理

本文综合考虑网络结构及节点间的互动等关键因素, 提出了一种节点影响力分布式计算机理. 首先根据节点交互行为在时域上的自相似特性, 运用带折扣因子的贝叶斯模型计算节点间的直接影响力; 然后运用半环模型来分析节点间接影响力的聚合; 最后根据社交网络的小世界性质及传播门限, 综上计算出节点的综合影响力. 仿真结果表明, 本文给出的模型能有效抑制虚假粉丝导致的节点影响力波动, 消除了虚假粉丝的出现对节点影响力计算带来的干扰, 从中选择影响力高的若干节点作为传播源节点, 可以将信息传播到更多数目的节点, 促进了信息在社交网络中的传播. 关键词： 社交网络 影响力 贝叶斯 半环代数     

Effects of photon addition on the quantum nonlocality of squeezed entangled-coherent states

Effects of photon addition on the quantum nonlocality of squeezed entangled coherent states for Bell-inequality tests are studied theoretically. By utilizing the method of photon-parity measurement, it is found that photon addition can always increase the degrees of Bell violations within a certain parameter range. A possible scheme for generating photon-added squeezed entangled coherent states is proposed.     

中美物理教材狭义相对论的比较

分析比较了中美两种教材相对论部分在内容结构、概念的引入和描述,以及例题和习题设置等方面的差异,并基于这种分析,为相对论时空理论的教学改革提供了新思路.     

Effects of photon addition on quantum nonlocality of squeezed entangled coherent states

Effects of photon addition on quantum nonlocality of squeezed entangled coherent states for Bell-inequality tests are studied theoretically. By utilizing the method of photon-parity measurement, it is found that photon addition can always increase the degrees of Bell violations within a certain parameter range. A possible scheme for generating photon-added squeezed entangled coherent states is proposed.     

基于问题引导与课程思政的课堂教学实践——以“德布罗意波”为例

为提高课堂教学质量,基于“德布罗意波”的内容,进行了以问题为导向,结合课程思政的课堂教学实践.通过问题引导,启发学生思考,充分发挥学生的主观能动性.同时,从科学精神、科学方法、哲学思想和使命担当等方面,将思想政治教育有效地贯穿于整个教学过程,达到既教书又育人的目的.     

核辐射及其安全防护

介绍了核辐射照射的特点及其对机体的生物效应，解释了国家核辐射防护中关于“剂量当量限值”的有关规定，并给出了具体的核辐射安全防护措施．     

Matlab软件在数字示波器实验中的应用

用matlab软件分别模拟了相互垂直不同频率的两个简谐振动在一个周期过程、初相相同而初相位差不同、初相不同而初相位差相同以及初相位差在一个周期变化四种情况下的李萨图，从模拟图上可以看出李萨图的运动轨迹过程，李萨图与两个信号的初相、初相差均有关系，初相位差随时间做周期性变化，合成的李萨图也做周期性变化。