排序方式: 共有47条查询结果,搜索用时 31 毫秒
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"CAI"就是计算机辅助教学,它可分为学生使用的助学软件和教师使用的辅教软件两大类.本文讨论辅教类软件,其内容主要有实物录相剪辑、模拟实验、模拟现象、范例习题、图片文字等,通常还配合必要的文字、语音、音效和背景音乐等,它是为物理教师更好地达到课堂教学目的而设计制作的,用于物理课堂教学的计算机应用软件,是一种全新的教具. 相似文献
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GLOBAL EXPONENTIAL STABILITY IN HOPFIELD AND BIDIRECTIONAL ASSOCIATIVE MEMORY NEURAL NETWORKS WITH TIME DELAYS 总被引:1,自引:1,他引:0
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Without assuming the boundedness, strict monotonicity and differentiability of the activation functions, the authors utilize the Lyapunov functional method to analyze the global convergence of some delayed models. For the Hopfield neural network with time delays, a new sufficient condition ensuring the existence, uniqueness and global exponential stability of the equilibrium point is derived. This criterion concerning the signs of entries in the connection matrix imposes constraints on the feedback matrix independently of the delay parameters. From a new viewpoint, the bidirectional associative memory neural network with time delays is investigated and a new global exponential stability result is given. 相似文献
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MAXIMAL ELEMENTS OF A FAMILY OF GB-MAJORIZED MAPPINGS IN PRODUCT FC-SPACES AND APPLICATIONS 总被引:1,自引:1,他引:1
丁协平 《应用数学和力学(英文版)》2006,27(12):1607-1618
A new family of GB-majorized mappings from a topological space into a finite continuous topological spaces (in short, FC-space) involving a better admissible set-valued mapping is introduced. Some existence theorems of maximal elements for the family of GB-majorized mappings are proved under noncompact setting of product FCspaces. Some applications to fixed point and system of minimax inequalities are given in product FC-spaces. These theorems improve, unify and generalize many important results in recent literature. 相似文献
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LI Heng-Mei YUAN Hong-Chun 《理论物理通讯》2008,50(9):615-618
Our primary purpose of this work is to explicitly construct the general multiparite Einstein-Podolsky- Rosen (EPR) entangled state in multi-mode Fock space for a system with different masses of particles, which makes up a new quantum mechanical representation owing to completeness relation and orthogonal property. Its entanglement can be seen more clearly by analyzing its standard Schmidt decomposition. In addition, some applications of the multipartite entanglement are proposed including deriving the generalized Wigner operator and squeezing operator. 相似文献
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In many statistical applications, data are collected over time, and they are likely correlated. In this paper, we investigate how to incorporate the correlation information into the local linear regression. Under the assumption that the error process is an auto-regressive process, a new estimation procedure is proposed for the nonparametric regression by using local linear regression method and the profile least squares techniques. We further propose the SCAD penalized profile least squares method to determine the order of auto-regressive process. Extensive Monte Carlo simulation studies are conducted to examine the finite sample performance of the proposed procedure, and to compare the performance of the proposed procedures with the existing one. From our empirical studies, the newly proposed procedures can dramatically improve the accuracy of naive local linear regression with working-independent error structure. We illustrate the proposed methodology by an analysis of real data set. 相似文献
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《物理》2014,(9)
<正>中物院高性能数值模拟软件中心(CAEP-SCNS:Software Center for High Performance Numerical Simulation)是隶属于中国工程物理研究院的事业单位,主要从事"高置信、高效能、高可用"数值模拟应用软件的快速研发、产品化与推广应用工作,为复杂应用系统提供数值模拟咨询、评估和优化设计,培养高水平人才,建立国际一流的高性能数值模拟服务能力,在能源、材料、信息、制造等领域,推动我国高性能科学与工程计算的发展。中心现有六个软件研发团队,根据实际工作需要,特向社会公开招聘高性能数值模拟软件研发人员,欢迎高水平人 相似文献
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