企业应用中移动技术的研究和实现

本文针对移动技术在企业制造管理中的更广泛的应用，围绕建立制造企业的移动信息平台，讨论移动技术选型问题，提出在J2EE构架上建造移动服务应用平台的技术解决方案。     

基于J2ME的小型移动商务系统的设计与实现

讨论了如何利用J2ME,XNL和HTTP等进行移动终端应用程序开发。结合传统网站,实现了基于J2ME的小型移动商务系统。通过实验验证了建立移动商务网站的可行性。     

无线CRM嵌入式终端的开发与设计

近年来,移动电子商务作为电子商务领域发展的新方向显示出巨大的潜力。作为企业最重要的商务系统之一的客户关系管理(CRM),更加需要无线应用模式来实现用户和企业之间快速高效的信息交互。本文提出了一种基于Java技术的嵌入式无线CRM应用的分布式设计方案。重点对基于J2ME平台的嵌入式客户端应用程序的设计与开发进行了研究。     

一种基于蓝牙的交互式系统设计与实现

随着无线互联技术和移动终端技术的发展,手机等移动终端用户对蓝牙产品的功能提出了更高的要求。蓝牙采用推送技术进行数据传输,用户只能选择是否接收,不能对蓝牙发送端的数据进行自主交互浏览。采用J2ME和蓝牙技术实现一种在移动蓝牙终端上使用的交互式系统,有效地利用了J2ME 跨平台的优势,以及蓝牙传送数据易用性和实用性等优点。根据对JSR82规范提供的Java蓝牙无线技术API的研究,给出了蓝牙交互式系统的设计方案和系统结构。通过J2ME的无线应用开发包和MIDlet编程模型,实现了交互式系统。     

Learning locomotion reflexes: A self-supervised neural system for a mobile robot

This article is concerned with an artificial neural system for a mobile robot reactive navigation in an unknown, cluttered environment. Reactive navigation is a process of immediately choosing locomotion actions in response to measured spatial situations, while no planning occurs. A task of a presented system is to provide a steering angle signal letting a robot reach a goal while avoiding collisions with obstacles. Basic reactive navigation methods are briefly characterized, special attention is paid to a neural approach to the considered problem. The authors describe the system's architecture and important details of the algorithm. The main parts of the system are: the Fuzzy ART neural self-organizing classifier, performing a perceptual space partitioning, and a neural associative memory, memorizing the system's experience and superposing influences of different behaviors. Tests show that the learning process, starting from zero, is efficient, despite some initial fluctuations of its effectiveness.     

移动网络手机实时监控系统的设计与实现

通过分析动力环境实时监控系统的实际需求,结合移动网络、J2ME、Java媒体框架等技术,提出了一个基于移动网络的手机实时监控系统的设计方案.涵盖了图像监控和数字监控两条通道,实现了视频监控、监控数据实时查询、告警和控制命令等功能.针对图像监控通道中高实时性的要求,提出了双缓冲多线程图像捕捉、自缓冲输入流机制、双播放器播放模式等多个创新方法对系统进行优化.最后结合系统在动力环境监控系统中应用案例,表明了系统的可行性和可靠性,且系统具有较高的性能.     

基于J2ME-GPRS学生信息管理系统的设计与实现

对J2ME与J2EE相结合的技术进行了研究,设计出一种高安全性.高信息集成度的综合解决方案.通过对目前各大高校的学生信息管理系统的分析,设计并开发出通用接口式J2ME通用客户端和J2EE服务器端.无论学生信息管理系统采用何种语言、何种结构,利用该组件,均能快速完整的开发出高效GPRS应用.     

基于J2ME技术的短信智能回复系统的设计与实现*

首先介绍了J2ME体系结构,探讨了短信智能回复系统的功能设计和关键技术,系统整体上参照MVC模式设计,使用了J2ME高级界面API、多线程、永久记录存储、短消息分组等多项技术实现;最后给出了系统实例仿真,并对该系统的应用进行了总结。     

移动导游服务平台的设计与实现

针对游客日益增加的对深度导游体验的需求,以及现有电子导游工具租金高、局限于某一景点的不足,提出一种新的基于移动互联网的电子导游服务的设计思想.随着3G网络的发展完善和智能手机的普及,手机终端逐渐成为人们便携的多媒体信息接收工具;同时服务器云端提供海量导游信息的存储和制作,形成云端—终端的服务模式,为游客提供丰富便捷的导游信息.系统实现了便捷的资源管理、导游信息制作、终端适配及多媒体信息发布等功能;结合短信、彩信、二维码等方式,手机终端可以访问景点的图文、音视频解说、路线提示、景点推荐及公共设施定位等导游服务.通过向公园、展会等潜在客户进行系统推广和演示,对此种服务模式和达到的效果较为认可.     

手机二维码识别系统的设计与实现

在研究二维码及其手机识别技术的基础上,开发了基于Android平台的手机二维码识别系统,在系统架构设计中将二维码识别系统的平台支撑层、客户端应用层、云端处理层进行分层设计,保证了系统的安全性,根据需求给出系统的功能模块划分和用例分析,最后实现了手机二维码的编码解码的核心功能。     

基于J2EE的IETM创作系统的设计与实现

交互式电子技术手册(IETM)已成为当前航空器维修保障信息化研究和应用热点之一.介绍了IETM的国内外现状及发展趋势,给出了基于J2EE平台的IETM创作系统的总体结构和功能,该系统可完成适应于航空器领域内交互式电子技术手册的框架构造、数据组织、文档编写和出版发行,重点研究了使用J2EE平台构造IETM创作系统的运行机制和核心技术,提出了SGML/XML编辑器和IETM创作系统集成的新方法,并给出了关键过程的描述和解决方案.     

公路煤炭调运监控系统设计与实现

针对煤炭在公路运输过程中存在管理盲区,导致偷煤、换煤现象频繁发生的问题,设计并实现了可对运榆过程进行有效监控的煤炭公路调运监控系统.在各矿点和集运站,安装ID卡车辆调度门禁管理系统、装卸车汽车衡称重管理系统.在运输途中,通过GPS车辆定位跟踪来实现对运煤车辆的实时监控.软件体系结构采用C/S和B/S的混合模式,用Power-Builder实现了C/S模式的栏杆机、摄像头等外围设备控制和汽车衡称重、ID卡车辆调度门禁管理.用VB实现了车辆过磅数据、现场抓拍的图片等底层数据的上传,信息查询功能在J2EE平台上采用Struts框架实现.     

Design and development of Distributed Virtual Geographic Environment system based on web services

This paper aims to design and develop a Distributed Virtual Geographic Environment (DVGE) system. A DVGE system is an Internet-based virtual 2D and 3D environment that provides users with a shared space and a collaborative platform for publishing multidimensional geo-data, and for simulating and analyzing complex geo-phenomena. Users logging into the system from different clients can share distributed geo-information resources, including geo-data and geo-models, and can complete collaborative tasks. Web service technology provides effective solutions for constructing DVGE systems because of its ability to support multi-platform, multi-architecture, and multi-program-language interoperability on the Internet, but also because of its ability to share programs, data, and software. This paper analyzes the characteristics, relevant technologies, and specifications of web services, such as grid services, Open Geo-data Interoperability Specifications (OpenGIS), and Geography Markup Languages (GML). The architecture and working mechanisms of the DVGE system based on web services are then elaborated. To demonstrate DVGE systems based on web services, we examine a case study of water pollution in Yangzhou City, Jiangsu Province, China, using a prototype DVGE system that is developed with Jbuilder9.0 and Java3D 1.0 packages, and the Weblogic platform 8.1.     

基于J2ME的移动无线阅读系统的设计与实现

介绍了一个基于J2ME平台的移动无线阅读系统的总体结构和功能,该系统用于向手机用户提供在线阅读各种信息的增值服务,重点讨论了在手机上。运行的J2ME阅读程序的实现技术。     

面向Internet的文档管理系统的设计与实现

阐述了Internet环境下新型文档管理系统的设计与实现,针对传统文档管理系统在可扩展性、伸缩性和Web接口方面的缺陷,以Java2企业版应用服务平台为基础,实现了IETF面向分布式文档写作与版本控制的协议—WebDAV,提供了一个分布式的、多层的、基于组件和易于扩展的文档管理系统的体系结构和平台。     

Design and implementation of vision-based transport for a mobile robot via Kalman filter

A vision-based scheme for object recognition and transport with a mobile robot is proposed in this paper. First, camera calibration is experimentally performed with Zhenyou Zhang’s method, and a distance measurement method with the monocular camera is presented and tested. Second, Kalman filtering algorithm is used to predict the movement of a target with HSI model as the input and the seed filling algorithm as the image segmentation approach. Finally, the motion control of the pan-tilt camera and mobile robot is designed to fulfill the tracking and transport task. The experiment results demonstrate the robust object recognition and fast tracking capabilities of the proposed scheme.     

Assessing the effects of service quality and justice on customer satisfaction and the continuance intention of mobile value-added services: An empirical test of a multidimensional model

Understanding the antecedents and consequences of customer satisfaction in the mobile communications market is important. This study explores the effects of service quality and justice on customer satisfaction, which, in turn, affects continuance intention of mobile services. Service quality, justice and customer satisfaction were measured by multiple dimensions. A research model was developed based on this multidimensional approach and was empirically examined with data collected from about one thousand users of mobile value-added services in China. Results show that all three dimensions of service quality (interaction quality, environment quality and outcome quality) have significant and positive effects on cumulative satisfaction while only one dimension of service quality (interaction quality) has a significant and positive effect on transaction-specific satisfaction. Besides procedural justice, the other two dimensions of justice (distributive justice and interactional justice) significantly influence both transaction-specific satisfaction and cumulative satisfaction. Furthermore, both types of customer satisfaction have significant and positive effects on continuance intention. Implications for research and practice are discussed.     

美元清分机识别系统设计与实现

提出了在纸币高速运行条件下对纸币图像进行快速可靠的识别和系统实现方法。清分机是一种自动纸币整理机具。纸币图像分析技术是清分机的核心技术。该系统是光机电一体化的设备,其硬件部分包括线阵图像传感器、信号采集控制器、数字信号处理器。硬件平台捕获高速运行的美元图像后,由信号处理算法完成美元图像的定位、几何校正、特征提取以及图像分析运算,使用BP神经网络完成图像识别。该系统在实际应用中取得了良好的效果。美元处理系统的速度可达800张/min,拒识率小于0.01%。     

Design and implementation of a Byzantine fault tolerance framework for Web services

Many Web services are expected to run with high degree of security and dependability. To achieve this goal, it is essential to use a Web services compatible framework that tolerates not only crash faults, but Byzantine faults as well, due to the untrusted communication environment in which the Web services operate. In this paper, we describe the design and implementation of such a framework, called BFT-WS. BFT-WS is designed to operate on top of the standard SOAP messaging framework for maximum interoperability. It is implemented as a pluggable module within the Axis2 architecture, as such, it requires minimum changes to the Web applications. The core fault tolerance mechanisms used in BFT-WS are based on the well-known Castro and Liskov’s BFT algorithm for optimal efficiency. Our performance measurements confirm that BFT-WS incurs only moderate runtime overhead considering the complexity of the mechanisms.