Cluster based Routing Scheme for Distributed Regression in Wireless Sensor Networks: Gaussian Eliminations

This paper addresses the issue of the in-network implementation of data regression in wireless sensor networks (WSNs). In particular, a cluster based routing scheme is proposed for achieving the distributed Gaussian elimination in solving the regression algebraic equation. In doing this, the tree structure is incorporated to coordinate the clusters so as to decouple the intersections with each other via a new message passing protocol. The cluster based routing scheme proposed here contributes not only to ease network topology management, but also to speed the convergence of distributed computation. Experimental results are reported to illustrate the validation of the proposed approach.     

矿用电缆连接处温度智能监测仪的研制

针对国内煤矿井下电缆连接处温度监测方法的不足,研制了一种矿用电缆连接处温度智能监测仪。该监测仪采用AT89C52单片机作为控制器进行数据处理与分析,利用单总线技术的温度传感器DS18820实现信号采集,并以200～1000Hz、4～20mA两种信号形式实现数据远程传输;同时,该监测仪还具有声光报警、USB数据存储等功能。现场试运行表明,监测仪测量精度高,声光报警及时、可靠,远程信号传输准确率高。     

小型组态软件图形界面系统的研究与开发

针对大型组态软件存在应用成本高、图形界面系统专用性较差等缺陷,构建了一种小型组态软件图形界面系统.该系统采用Visual Basic为开发工具,通过改进和构造ActiveX控件的方法来制作图形界面.研究结果表明,该方法简便快速,在完成对工业现场监控的同时达到了资源的优化配置.     

地理信息系统在精导武器中的应用研究

首先简述了地理信息系统的概念、特征和组成,结合精确制导武器在信息化战争中的运用,分析了地理信息系统在精确制导武器的直接运用和间接影响,并对地理信息系统在精确制导武器上应用的前景进行了展望。     

OSPF在按需电路上配置的研究与应用

OSPF是个链接状态路由协议,在同一层的区域内与其它所有路由器交换链接状态公告（LSA）信息。OSPF的LSA中包含连接的接口、使用的metric及其它的变量信息。OSPF路由器积累链接状态信息,并使用SPF算法来计算到各节点的最短路径。OSPF不但已成为目前Internet广域网和Intranet企业网采用最多、应用最广泛的路由协议之一,而且在综合业务数字网（ISDN）、X.25交换式虚电路（SVC）和拨号线路等应用广泛,故OSPF在按需电路上的配置成为目前极为关注的问题。     

Robust exponential stability conditions for retarded systems with Lipschitz nonlinear stochastic perturbations

This paper investigates robust mean‐square exponential stability of a class of uncertain stochastic state‐delayed systems with Lipschitz nonlinear stochastic perturbation. Based on Lyapunov–Krasovskii functional (LKF) method and free‐weighting matrix technique, some new delay‐dependent stability conditions are established in terms of linear matrix inequalities (LMIs). In order to reduce the conservatism, (1) the delay is divided into several segments, i.e. the delay decomposition method is applied; (2) cross terms estimation is avoided; (3) some information of the cross terms relationships which has not been involved in Reference (IET Control Theory Appl. 2008; 2(11):966–973) is considered. Moreover, from the mathematical point of view, the results obtained by free‐weighting matrix technique can be equivalently re‐formulated by simpler ones without involving any additional free matrix variables. The effectiveness of the method is demonstrated by numerical examples. Copyright © 2010 John Wiley & Sons, Ltd.     

Synthesis and characterization of novel blue azo‐dye derivatives containing acrylate group for dye‐based color filters

Abstract— Even though dyes have a fine resolution and good chromaticities, they are not widely used as coloring materials for color filters (CFs) due to their low thermal stability and chemical resistance. A series of azo‐dye derivatives, which consist of two cross‐linkable acrylate or methacrylate groups to improve thermal and chemical properties, have been synthesized and used to fabricate color filters. The spectral properties and chemical/thermal stabilities of the fabricated CFs were investigated by comparing dye‐based CFs, without a complicated dispersion process, but with pigment‐based CFs using dispersed pigment. Also, more properties including the development test and surface morphologies lithographic properties were studied. The synthesized azo dyes were characterized by elemental analysis, UV‐visible spectra, IR, mass, and ¹H‐NMR spectra.     

SOM‐based projection module for mobile displays

Abstract— The development of a compact, efficient VGA projection module to be embedded in mobile devices is reported. The design incorporates laser/laser diode (LD) light sources, Schlieren optics, and a one‐dimensional diffractive spatial optical modulator (SOM). During development, the optical parameters were determined and the relationships between the parameters to optimize the optical specifications were derived. The resulting optimized specifications enable us to manufacture two types of optical modu les as compact as 13 cc and with as little as 10% speckle contrast ratio.     

Innovative product design based on customer requirement weight calculation model

In the processes of product innovation and design, it is important for the designers to find and capture customer's focus through customer requirement weight calculation and ranking. Based on the fuzzy set theory and Euclidean space distance, this paper puts forward a method for customer requirement weight calculation called Euclidean space distances weighting ranking method. This method is used in the fuzzy analytic hierarchy process that satisfies the additive consistent fuzzy matrix. A model for the weight calculation steps is constructed; meanwhile, a product innovation design module on the basis of the customer requirement weight calculation model is developed. Finally, combined with the instance of titanium sponge production, the customer requirement weight calculation model is validated. By the innovation design module, the structure of the titanium sponge reactor has been improved and made innovative.     

一种附加直流电源漏电保护器的研制

分析了煤矿井下中性点不接地供电系统对地绝缘电阻的基本要求,给出了附加直流电源检测对地绝缘电阻的原理与保护方法;在此基础上介绍了一种附加直流电源漏电保护器的软、硬件设计方案。实验和实际运行结果表明,该附加直流电源漏电保护器误差较小,能够满足煤矿井下电网的漏电保护要求。