High-fidelity lossless data hiding based on predictors selection

Multimedia Tools and Applications - Reversible data hiding based on prediction methods is a data hiding technique wherein secret bits can be efficiently hidden into cover images. In this paper, we...     

An efficient reversible data hiding with reduplicated exploiting modification direction using image interpolation and edge detection

Multimedia Tools and Applications - Data hiding is a technique that embeds a cluster of secret messages into the original image. The image with secret messages can be distributed on the Internet...     

Indistinguishability of pure orthogonal product states by LOCC

We construct two sets of incomplete and extendible quantum pure orthogonal product states (POPS) in general bipartite high-dimensional quantum systems, which are all indistinguishable by local operations and classical communication. The first set of POPS is composed of two parts which are \(\mathcal {C}^m\otimes \mathcal {C}^{n_1}\) with \(5\le m\le n_1\) and \(\mathcal {C}^m\otimes \mathcal {C}^{n_2}\) with \(5\le m \le n_2\), where \(n_1\) is odd and \(n_2\) is even. The second one is in \(\mathcal {C}^m\otimes \mathcal {C}^n\) \((m, n\ge 4)\). Some subsets of these two sets can be extended into complete sets that local indistinguishability can be decided by noncommutativity which quantifies the quantumness of a quantum ensemble. Our study shows quantum nonlocality without entanglement.     

城市管理科学执法分析决策系统的开发与实现

数字城管建设过程中积累了大量的执法信息,分析和挖掘这些信息具有重要的意义。介绍了一个城市管理科学执法分析决策系统的具体设计和实现,该系统基于Java EE平台,采用MVC设计模式,使用Struts 2和Hibernate框架,综合运用了统计分析方法。该系统能为城市管理的科学执法提供决策支持。     

Substructure based approach to finite element model updating

A substructure-based finite element model updating technique is proposed in this paper. A few eigenmodes of the independent substructures and their associated derivative matrices are assembled into a reduced eigenequation to recover the eigensolutions and eigensensitivities of the global structure. Consequently, only the concerned substructures and the reduced eigenequation are re-analyzed in the optimization process, thus reducing the computational load of the traditional model updating methods which perform on the global structure. Applications of the proposed substructure-based model updating to a frame structure and a practical bridge demonstrate that the present method is computationally effective and efficient.     

一种无接触供电的无线鼠标

介绍了一种无接触供电的无线鼠标设计电路,无接触电能发射装置采用USB供电,通过自激振荡电路产生了138 kHz的高频振荡电压;无接触电能接收装置采用感应耦合方式获取电能.无线鼠标用无线模块nRF24E1构成信号发射和接收电路,该电路除具备有线鼠标全部功能外,还可以离开电脑远距离灵活操纵鼠标.     

交流阻抗法测定锂离子电池正极材料的导电率

采用交流阻抗法测定了3种锂离子电池正极材料LiCoO2,LiMn2O4和LiFePO4的电子导电率、离子导电率和材料电导率.结果表明,LiCoO2材料的电导率较高,含有聚阴离子基团LiFePO4材料的电子电导率和离子电导率均较低.     

基于构件的软件工程及其测试、维护和实践

论述了基于构件的软件工程（ＣＢＳＥ）的基本思想。并对其带来的测试和维护上的新问题及解决方案进行了探讨。最后给出所开发的视频编码软件包的例子。     

胶粘耐磨涂层的研制及其磨损机理分析

本文介绍了ＪＮＴ９０系列涂层的研制过程及计算机辅助涂层配方优化方法，分析了影响胶粘胶耐磨涂层耐磨性的主要因素，并通过扫描电镜对粘涂层的结构形貌，磨损机理进行了研究，提出了提高涂层性能折途径和见解。