ZEBEX公司推出多线式激光扫描平台

ZEBEX公司新近推出的Z-6031是定位于中高端用户的多线式激光扫描平台，它在经典扫描平台Z-6030中导入新版硬件解码芯片，并对其内部读码引擎及电源管理方面做了重大改进，能够大大提高物品流通速度。     

一种基于贪心EM的改进预测算法

本文主要研究了Motif预测算法,在贪心EM预测算法基础上进行分析优化,并形成新的预测方法。工作重点是在参数的初始化,对参数模型的重新划分并引入Kd-树的层次聚类的方法,建立新的PKG算法。预测结果表明,在预测较大数据集方面新算法有一定的优势,尤其是对同一物种的序列预测具有更强的搜索和分类能力,在没有影响时间复杂度的前提下显著的提高了搜索的效率。     

数论在几种常见密钥码体制中的运用

本文首先介绍了密钥码体制几种重要的数论定理,而后分析了几种传统的密钥码体制和公开密钥码体制的编码原理,探讨来常见的几种密钥码体制的解码方法,分析密钥码体制的安全性。     

RFID中间件在世界及中国的发展现状

RFID是近年来快速发展起来的一种全新的无线射频扫描识别技术，其工作原理为：RFID设备向电子标签发送无线射频电波，电子标签接收读写器发射的电波并将其转化为工作电能，启动电子标签内的芯片电路工作，并将电子标签内存储的信息数据发射出去，读写器接收电子标签发射的数据电波，进行解码、转换并导入计算机软件系统，从而完成整个RFID的数据识别过程。     

一汽丰田卡罗拉1.6L GL轿车无法启动的故障诊断方法

发动机无法启动是汽车常见的故障,笔者利用博世公司的FSA740、KT-600解码仪以及丰田公司的专用解码仪对卡罗拉轿车发动机电控系统的元件进行工作波形测试、故障码的读取、动态数据流的读取、故障帧的读取,并对维修企业出现过的各种故障进行模拟。笔者根据卡罗拉发动机的控制特点和试验的结果进行了故障分析,并结合维修实际情况总结出卡罗拉轿车发动机无法启动的故障诊断方法。     

一汽丰田卡罗拉1．6L GL轿车无法启动的故障诊断方法

发动机无法启动是汽车常见的故障，笔者利用博世公司的FSA740、KT-600解码仪以及丰田公司的专用解码仪对卡罗拉轿车发动机电控系统的元件进行工作波形测试、故障码的读取、动态数据流的读取、故障帧的读取，并对维修企业出现过的各种故障进行模拟。笔者根据卡罗拉发动机的控制特点和试验的结果进行了故障分析，并结合维修实际情况总结出卡罗拉轿车发动机无法启动的故障诊断方法。     

EM菌对丙烯腈废水的处理研究

本实验根据丙烯腈废水的具体特征,以EM有效菌作为接触氧化菌种,主要研究了EM菌的驯化和接触氧化处理的最佳条件,确定了其最佳的pH、菌液浓度以及温度值。经过对废水进行好氧处理的结果表明,COD出水降为100mg/L以下,去除效率达到99.4%,色度由原来的300倍降低到20倍,达到《污水综合排放标准》(GB8978—1996)要求的国家一级排放标准。     

交互效应面板模型的EM算法和MCMC算法

交互效应面板模型是目前计量经济学前沿研究的热点,有着广阔的应用空间。但是对很多应用者而言,模型内的参数估计是一个非常棘手的问题。通常的Newton-Raphson算法在优化似然函数的过程中,常常会出现优化失败的情况。本文依据EM算法和MCMC算法理论,为应用研究者提供了一套获得参数估计值的流程。计算机上的试验证实两种估计方法都非常稳健可靠,并在很多情况下,差异不是很大。     

基于Android的QR码识别系统的研究与实现

文中介绍的QR码识别系统是以自动识别技术为基础，以QR码为识别对象，根据Android操作系统，采用二维码QR码相关标准来设计的。介绍了二维码自动识别工作原理，详细阐述了识读系统的设计和软件开发。该系统实现了QR码的解码功能，系统满足时间和准确度的要求，给用户平时的生活和学习带来极大的便利。     

基于单片机解码的无线开关设计

PT2262/2272是目前应用比较广泛的遥控通信IC芯片之一,一般都是成对使用,控制通道最多只有6路（D0～D5）,在很大程度上影响了该芯片的使用。然而,PT2262/2272最多可有12位（A0～A5/D0～D5）三态地址管脚（悬空、接高电平、接低电平）,故可任意组合成531441（3^12）个地址码和数据码,因此可用51单片机模拟PT2272解码的解码方法,根据PT2262编码波形特征对其进行解码,实现多对一传输,使控制通道在理论上可扩展至531441（3^12）路。     

RFID在智能交通领域的应用

RFID（射频识别技术）采用大规模集成电路技术、识别技术、计算机及通信技术，通过读写器和安装在载体（车辆或设备或人员）上的RFID卡，构成RFID系统，实现对载体的非接触的识别和数据信息交换．RFlD技术已广泛应用于交通、公安、路政、物流管理等领域＋本文主要介绍该技术在智能交通领域的几个主要应用。     

Numerical Maximisation of Likelihood: A Neglected Alternative to EM?

There is by now a long tradition of using the EM algorithm to find maximum‐likelihood estimates (MLEs) when the data are incomplete in any of a wide range of ways, even when the observed‐data likelihood can easily be evaluated and numerical maximisation of that likelihood is available as a conceptually simple route to the MLEs. It is rare in the literature to see numerical maximisation employed if EM is possible. But with excellent general‐purpose numerical optimisers now available free, there is no longer any reason, as a matter of course, to avoid direct numerical maximisation of likelihood. In this tutorial, I present seven examples of models in which numerical maximisation of likelihood appears to have some advantages over the use of EM as a route to MLEs. The mathematical and coding effort is minimal, as there is no need to derive and code the E and M steps, only a likelihood evaluator. In all the examples, the unconstrained optimiser nlm available in R is used, and transformations are used to impose constraints on parameters. I suggest therefore that the following question be asked of proposed new applications of EM: Can the MLEs be found more simply and directly by using a general‐purpose numerical optimiser?     

甘肃省组织机构代码网络系统运行状况分析及应对措施

简要叙述网络系统运行初期的状况，调查分析后提出存在的问题及应对措施。     

组织机构代码在社会活动中的应用研究

组织机构统一代码标识制度,是国家实行市场经济体制和开展信息化建设的一项基本制度。文章介绍了组织机构代码的含义、组织机构代码信息在社会活动中的功能作用、应用现状、存在的问题及发展方向。     

Entry modes in reshoring strategies: An empirical analysis

The Entry Mode (EM) choice is a fundamental issue in reshoring initiatives. Despite several authors have studied the determinants of offshoring EM, no study has investigated so far the factors affecting the reshoring EM and its relation with the offshoring EM. The purpose of this paper is to examine which factors influence entry mode choice in reshoring initiatives. We develop a conceptual framework that explains the reshoring EM in terms of country-, industry-, firm- and project-specific factors, in addition to the offshoring EM choice. Next, we test this model by using a sample of 677 cross-industry and cross-country reshoring projects. Based on the results, we find that offshoring EM significantly constrains the subsequent reshoring EM. More in detail, firms adopting offshore insourcing entry modes tend to retain these modes in reshoring. Furthermore, reshoring EM is explained by industry- and project-specific factors, while offshoring EM is influenced by a broader set of industry-, country-, and firm-specific factors. This study fills a gap in the reshoring literature by analysing influential factors in EM choice and by offering a comparison between the determinants of offshoring and reshoring EM.     

Social marketing in action—geodemographics,alcoholic liver disease and heavy episodic drinking in Great Britain

• This paper explores the use of geodemographic population classifications to identify and predict ‘hotspots’ of Great Britain (England, Scotland and Wales) prone to greater than expected alcoholic liver disease. MOSAIC geodemographic codes were overlaid onto Hospital Episode Statistics (HES) for Great Britain. The HES data included gender, MOSAIC Type, MOSAIC Code, postal and local authority district, month and year of birth, ethnic origin, Primary Care Trust and GP code. Analysis demonstrated that some geodemographic classifications of the population were over-represented for alcoholic liver disease episodes. These groups had low socio-economic and socio-cultural status, lived in areas of high deprivation and disadvantage. Manchester followed by Liverpool and Hull had the highest estimated patient group size in England and Hart, Surrey Heath and Wokingham the three lowest (indicating low expected levels of alcoholic liver disease compared with average). Analysis of the same data was also carried out at postcode level for Manchester indicating ‘hotspots’ for alcoholic level disease at street level. This analysis exemplifies the ways in which geodemographic data might be usefully applied to routine health service data to enhance service planning, delivery and improved targeting of information in harder to reach populations.

Copyright © 2007 John Wiley & Sons, Ltd.     

民革天津市委档案管理系统之收录管理模块

本论文主要阐述了民革天津市委档案管理系统之收录管理模块的开发背景、选题意义、国内外发展现状、可行性分析、需求分析、系统分析、系统设计、系统实施以及系统测试。系统使用VisualFoxPro作为开发语言。文中对本系统进行了完整的业务流程和数据流程分析,对功能模块以及数据字典和数据库设计、代码设计、输入输出设计等进行了详细的说明,在系统实施部分简要介绍了开发本系统所用到的关键技术和特色技术,最后进行了系统测试。     

条码技术和POS系统

简述商品条码和ＰＯＳ系统的关系及商场实施ＰＯＳ系统管理给商场销售带来的好处。     

An ecological modernist interpretation of sustainability: the case of Interface Inc.

This article seeks to extend understanding of how sustainability is operationalized in firms by considering the example of Interface Inc. In particular, we assess the sustainability policy and strategies of Interface Inc. within the frame recourse of an ecological modernization (EM) perspective of sustainability. One question of particular interest is whether organizations are able to implement an EM‐aligned worldview through their own internal capabilities or whether changes to the wider socio‐economic system are required. The analysis of Interface's experiences suggests that, at this stage, an organization cannot fully adhere to an EM perspective of sustainability; its success is also dependent on changes to the wider socio‐economic system in which the firm operates. The critical factors in implementing sustainability that emerged from the Interface case study are discussed. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.     

镍氢动力电池研发数据管理系统的设计分析

文章简要介绍了数据库应用系统开发的要素,通过需求分析确定了系统的数据流图,通过设计分析完成了系统的数据库、表的创建和系统功能模块的划分,为系统的代码实现打下了基础,并且实现了研发数据管理的信息化和标准化。