基于Android平台的移动终端GPS研究

Android系统是Google推出的能在移动终端设备上运行的操作系统,安装有GPS装置的Android平台移动终端设备实现实时定位也得到了使用者的普遍关注.文中在深入介绍Android平台的架构和特点的基础上,结合传统的GPS定位方法和Android平台提供的基于位置服务的地图服务API开发包,分析了Android平台移动终端实时定位的原理和方法,详细阐述了Android平台的GPS系统的具体实现技术,讨论了利用地图接口和反地址解析来实现地图的控制和详细位置的显示.最后通过实际的智能终端移动定位应用开发验证了方法的可行性     

基于位置服务的智能旅游地图导航系统研究

开发了一款在移动设备上使用的智能地图导航系统,为自驾游等个性化旅游人群提供支持和帮助。 该系统使用Eclipse和Android SDK开发工具包完成,通过Java语言的支持以及引入百度地图API,同时加入科大讯飞的语音支持,使用户直接通过语音方式输入文字,且快速获取百度公司提供的基本地图,最后能完成关键字搜索、用户位置精准定位、周边搜索、指定位置的经纬度查询、出行路线规划等功能。项目“吉林省邓小平广场”的搜索实测证明该系统响应速度快,安全性高,能满足个性化旅游用户的需求,能为个性化旅游市场提供技术保障。     

基于云计算的手机智能出租车呼叫系统

针对目前交通拥堵致使出行打车难的问题,设计并实现一种基于云计算的手机智能出租车呼叫系统。该系统由云服务器和Android手机客户端组成,服务器利用云计算环境下的Map-Reduce并行编程模型对K-means聚类算法实施并行化,提高推送信息的质量和效率;客户端分别利用LocationClient、MapView和MKOfflineMap接口实现定位服务、图层展示更新和百度离线地图服务功能,通过Android智能手机平台为用户提供及时、准确的信息服务。在客户端和服务器之间,利用RPC服务推送Protocol Buffer协议序列化的信息。实验结果表明,与滴滴打车软件相比,该系统的搜索推荐效率提高了20%左右,离线地图展示及定位流量比在线方法减少了90%以上,快速响应性能较好。     

基于Android的旅游景区智慧导游APP的开发研究

随着移动互联网技术的发展,手机已经成为了人们吃、住、行、游、购、娱的重要工具.文章主要研究一款基于Android平台的旅游景区智慧导游APP,帮助在景区旅游的游客智能获取游览线路、快速获取景点信息.本文中将用到Android编程、蓝牙、多媒体、百度地图等技术,主要通过分析游客的需求,设计系统架构和功能模块;重点研究了Android编程实现自定义浮动菜单、处理控件尺寸自适应、SQLite数据库等技术,以及利用"蓝牙技术"准确定位游客位置并进行自动导游,解决移动智能终端在景区通过"基站"和GPS定位不准确的问题.     

基于Android车辆定位信息查询系统的设计与实现

研究目的是开发基于Android平台智能移动设备对车辆实时信息的查询和监控.车载终端采集数据并通过GPRS向定位服务平台传递车辆实时数据;服务平台根据GPS通信协议解析数据并存储;智能移动设备访问服务平台Servlet服务,获取车辆实时数据,并利用百度地图Android SDK在地图上标识,展示车辆的速度、方向、时间、位置等相关信息.实现了车辆定位、实时跟踪、轨迹回放等主要功能.     

基于OpenGL ES的移动终端三维地图可视化

移动智能设备正迅速成为地图服务的增值平台,基于Android系统平台的移动地图服务技术逐渐成为研究热点,由此设计基于OpenGL ES的三维地图可视化客户端系统。通过调用Android百度地图API实现基本地图操作、导航、路径规划、公交路线查询、POI搜索等功能,使用OpenGL ES加载OBJ文件到移动设备中实现三维地图模型放大、缩小和旋转视角等功能,通过开发校园三维地图可视化应用软件验证方案设计的可行性。     

基于Android的智能派件系统的设计与实现

末端派送是快递服务的关键一环,本文设计和实现了一款基于Android的智能派件系统,采用科大讯飞API+百度地图API实现信息的可视化与语音交互的智能化。快递员可以通过该系统的快递信息可视化、智能语音交互、智能路径规划和导航等功能,提高其派送效率。     

一种电力光纤实时监测系统设计

提出了一种电力光纤实时监测系统。根据电力光纤环网的特点进行设计,结合OTDR技术和GPRS技术,实现对光纤的实时监测。当光纤有故障发生时,第一时间向工作人员发送报警短信,同时在网站地图上显示故障点位置。实验证明,该系统能在20秒内完成对光纤故障点定位,发送报警短信,以及在地图上显示故障点位置等操作,具有较强的实用性。     

基于Android4.4和百度地图的远程定位系统设计

针对远程定位的应用需求,设计了一套基于Android4.4和百度地图的远程定位系统。首先利用注册机制,构建一个由5个线程和3个消息队列组成的支持多用户同时使用的服务器系统,然后针对Android4.4版本特点,阐述了如何使用Looper机制进行消息线程间传递,最后通过百度地图API和定位终端的位置信息,实现多用户的实时定位。实验表明,本系统结构合理、性能稳定。     

基于Android平台的车载导航系统的研究与设计

为缩短嵌入式车载导航系统开发进程,提高系统维护和升级能力,研究了Android平台的特点以及车载导航系统的性能需求,提出在andriod平台基础上,结合baidu map,设计一个基于Android平台的车载导航终端系统;实验结果表明,该系统实现了车辆自我定位、地图查询、路径规划和导航;经过严格测试,系统运行良好.     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.