老机新用：无线蓝牙摄像头跟我做

随着时代的发展，网络已经渗透进我们生活的方方面面。文字和语音的交流已经不能满足网友们的需要，而视频聊天拉近了天南海北的朋友间的距离，越来越受到大家的青睐，于是摄像头成为网友们一个不可或缺的硬件。你有没有想过，我们成天都在使用的手机除了打电话发短信之外，还能成为一个无线摄像头?你没有看错!如果你拥有基于Symbian系统的诺基亚(NOKIA)7650、3650、3660、6600等手机中的一部，恭喜你，你同时拥有了一个无线蓝牙摄像头。下面以诺基亚3650为例，教你如何将爱机变成一个无线摄像头。     

Regular Balanced Cayley Maps for Cyclic, Dihedral and Generalized Quaternion Groups

A Cayley map is a Cayley graph embedded in an orientable surface such that. the local rotations at every vertex are identical. In this paper, balanced regular Cayley maps for cyclic groups, dihedral groups, and generalized quaternion groups are classified.     

WiMAX信号解决方案

WiMAX技术具有许多忧势，比如能实现更远的传输距离．提供更高速的宽带接入以及多媒体通信等业务。所以在将来一定会得到飞速发展．R＆S公司的信号源SMU200A和信号分析仪FSQ可以满足WiMAX信号测试的要求。     

基于FPGA的GFP成帧协议实现

本文介绍了采用XILINX的VIRTEX300E FPGA如何实现Ethemet Frame到SDH映射的GFP协议，详细阐述了GFP帧映射模式的原理及其实现的方法。     

障碍拟阵图

Let G be a simple graph and T={S :S is extreme in G}. If M(V(G), T) is a matroid, then G is called an extreme matroid graph. In this paper, we study the properties of extreme matroid graph.     

基于MMD算法的HMM参数重估计的矩阵表示

本文提出的MMD算法用于提高模型区别错误信息和正确信息的能力．利用该算法在对模型的参数进行重估计时．涉及到复杂的目标函数的梯度运算．击运用矩阵运算使得梯度运算变得简单明了，因此本文给出了MMD算法下的HMM参数重估计的矩阵表示形式并给出了证明．     

符号空间的拟移位和Moebius带上的奇怪吸引子

给出了双边符号空间上的一种新的拟移位映射，得到了它与传统的移位映射拓扑共轭．类似Smale马蹄，对这种拟移位映射给出了一个模型，即在Moebius带上给出一类映射．同时刻划了这类映射的吸引子的结构及动力学行为．     

A Continuation Method of Parameter Inversion for Non-Equilibrium Convection-Dispersion Equation

Based on the homotopy mapping, a globally convergent method of parameter inversion for non-equilibrium convection-dispersion equations （CDEs） is developed. Moreover, in order to further improve the computational efficiency of the algorithm, a properly smooth function, which is derived from the sigmoid function, is employed to update the homotopy parameter during iteration. Numerical results show the feature of global convergence and high performance of this method. In addition, even the measurement quantities are heavily contaminated by noises, and a good solution can be found.     

Bounds for the Least Laplacian Eigenvalue of a Signed Graph

A signed graph is a graph with a sign attached to each edge. This paper extends some fundamental concepts of the Laplacian matrices from graphs to signed graphs. In particular, the relationships between the least Laplacian eigenvalue and the unbalancedness of a signed graph are investigated.     

亚毫米波系统探测距离分析

本文提出了距离的概率分布函数作为系统的性能指标，提高了系统评价的准确性。