泛在网络的技术、应用与发展

泛在网络已经被公认为是信息通信网络演进的方向。泛在网络利用网络技术,实现人与人、人与物、物与物之间按需进行信息获取、传递、存储、认知、决策、使用等服务,网络将具有超强的环境、内容、文化、语言感知能力及智能性。泛在网络包含电信网、互联网以及融合各种业务的下一代网络,并涵盖各种有线无线宽带接入、传感器网络和射频标签技术（RFID）等。许多国家都从长远发展角度提出了泛在服务概念和相应的国家战略。本文结合信息社会战略阐述了泛在网的内涵、关键技术、新型的服务,并与IBM提出的智慧地球的内涵做了对比分析。     

泛在测绘与泛在定位的概念与发展

一、泛在测绘的概念和定义泛在测绘是指用户在任何地点、任何时间为认知、环境与人的关系而创建和使用地图的活动。强调以人为本,以用户为中心,以使用者的需求为地图的主要信息来创建实时、动态的测绘产品。泛在定位是指用户在泛在测绘的过程中,利用多种感知技术来感知目标位置、环境及其变化的活动。泛在地图是指在泛在测绘概念的     

PCB网印中的故障与对策

PCB网印过程中，会发生各样的故障，它既影响生产又影响网印质量。产生故障的原因很多，不但与操作人员的网印技术高低有关，而且也与印料、承印物的性能、网印方式、网版质量、刮板等有关。如果网印操作人员的技术不熟练，工作质量不高，则容易发生网印故障。同样，如果印料、网版、刮板、网印机、网印环境等不好，也会产生网印故障。     

宽带泛在网络发展及UWB技术特性

宽带泛在网络从提出到实际发展，已经越来越被业界所重视。其中，UWB技术是现今正被广泛研究和推向应用的一种新兴无线技术，为包括宽带泛在／普适通信在内的各类无线技术新发展与新应用开辟了大量新机遇。     

2013年第1—3期专题征文

第1期自组织网络技术与应用专题策划人重庆邮电大学通信与信息工程学院陈前斌院长面向泛在、异构网络现状与趋势,多种制式的网络共存,使得无线网络运营维护的复杂度大大增加,业界提出可以使用自组织网络(SON)技术提升网络建设与维护效率、降     

PCB网印中的故障与对策

PCB网印过程中、会发生各样的故障，它既影响生产又影响网印质量。产生故障的原因很多，不但与操作人员的网印技术高低有关．而且也与印料、承印物的性能、网印方式、网版质量、刮板等有关。如果网印操作人员的技术不熟练，工作质量不禹，则容易发生网印古叟障。同样，如果印料、网版、刮板、网印机、网印环、境等不好，也会产生网印故障。     

有线无线卫星融合网技术进展

2013年8月，国务院《“宽带中国”战略及实施方案》发布。提出综合利用有线、无线技术推动广播电视网和互联网融合发展，加快构建宽带、融合、安全、泛在的下一代国家信息基础设施，全面支撑经济发展和服务社会民生。同时，《关于促信息消费扩大内需的若干意见》中，     

关于下一代互联网“十二五”发展建设的意见发改办高技[2012]705号

互联网是与国民经济和社会发展高度相关的重大信息基础设施，互联网发展水平已成为衡量国家综合实力的重要标志之一。抓住新形势下技术变革和产业发展的历史机遇，在现有互联网基础上进行创新，发展地址资源足够丰富、设施先进、节能泛在、     

什么是移动泛在网络

随着IT产业的深入发展，信息将渗透到人们日常生活的方方面面。这样的社会，可以称为“泛在信息社会”，即任何人无论何时、何地都可通过合适的终端设备与网络进行连接，获取个性化信息服务的全新信息社会。     

共享信息的文化网格

随着存储技术的进步，利用直播卫星等数字广播通道和整合大量文化资源的内容定位技术，可以建立一个把信息送达全国城乡，任家庭自由收藏、取用的全民共享信息的人文环境：“文化网格”，它是实现大规模远程教育、终身教育和电子文化传媒发行的一种理想机制。     

No Pervasive Computing without Intelligent Systems

For pervasive computing ideas to reach, and be used, by the general public, they should fulfil an unmet need. Automation of manual tasks in the home, car or at work provides a rich environment for new services and applications. Pervasive computing can be the infrastructure upon which such services can be built. However, without intelligent systems to support pervasive computing environments, users will be overwhelmed by the complexity of the systems with which they are asked to interact. Experience shows that, to be adopted, technologies must address a need without making unreasonable demands of the user, and without imposing huge maintenance and access costs. Intelligent systems will play a major part in enabling the applications that will create user need in pervasive computing environments — facilitating user access to the environment and reducing management cost to supportable levels. This paper will explore the social and technological research issues relevant to the use of intelligent systems in pervasive computing. These include privacy and data protection, user interface and human interaction with intelligent systems, knowledge acquisition, and the management of large-scale systems capable of autonomous action.     

A Pervasive System for Nuclear Medicine Department

Pervasive Computing technologies can be successfully adopted in designing smart and enhanced healthcare services and applications. Within a typical healthcare institution, one particular facility which can greatly benefit from pervasive technologies is the Nuclear Medicine Department, where nuclear medicine diagnostic tests like PET scan and nuclear scintigraphy are routinely carried out involving the use of radioactive substances. This paper presents a pervasive healthcare system which is intended to support clinicians in handling nuclear medicine test sessions within an appropriate, safety-aware context. The proposed system also includes features to easily interoperate with heterogeneous software and databases already present in traditional hospitals. Its design lies on a methodology which integrates RFID and photoelectric sensor technologies. An experimental prototype has been implemented and tested showing the feasibility of the system in a real healthcare facility.     

动态测量的普适计算

传感器测量物体属性并由数字系统对测量的原始数据进行处理获得需要的信息。在动态测量中存在数据量大及严重的随机性等特点。测量数据的处理方法将对测量系统的性能产生重要影响。现在,计算机和嵌入式系统在刺量系统中获得广泛应用,则普适计算模式成为具有优势的选择。基于热量测量系统,给出了拓扑原理及应用分析。特别是在动态测量的测量数据处理中,普适计算性能优越。     

A Survey of Pervasive Services

With the technological advances and market development, telecommunications networks and the Internet are converging into one universal network; meanwhile, the services provided by these two kinds of networks are integrating. Pervasive services will meet demands and expectations from all aspects. The topic has become a favorite for research in Beyond Third Generation (B3G), Next Generation Network (NGN) and Next Generation Internet (NGI) fields. The concept of the pervasive services comes from pervasive computation and B3G. Their features include pervasiveness, mobility, transparency, QoS-guarantee, customization, adaptiveness, push, security, easiness, variety and time-to-market. 3GPP, OMA and the B3G research program of the European Union (EU) have conducted a lot of research work about the different features of pervasive services. The current hot topics in the pervasive services research include context awareness and service enabling.     

A Framework for Engineering Pervasive Applications Applied to Intra-vehicular Sensor Network Applications

The vehicle sector is one of the most exciting application areas for wireless ad hoc networks and pervasive computing technologies. Vehicles are constantly being equipped with more sensors and devices able to collect real-time data on traffic, vehicle condition, passenger health, and so on. Being a relatively new field of application, this area needs tools and methodologies in order to specify requirements and prototype applications. This paper presents a Framework for Pervasive Applications and describes how it can be customized in the case of Vehicular Applications. The framework consists of a set of software requirements, some metrics, and some middleware services for rapid prototyping pervasive applications. In addition, the paper introduces an ongoing project that aims at granting high-quality on-road transportation services for fragile food (e.g. wine). In particular, its objective is to provide a system able to monitor several conditions, like temperature, humidity, light, shocks, etc., which carried products are subject to during transportation.     

Pervasive Healthcare and Wireless Health Monitoring

With an increasingly mobile society and the worldwide deployment of mobile and wireless networks, the wireless infrastructure can support many current and emerging healthcare applications. This could fulfill the vision of “Pervasive Healthcare” or healthcare to anyone, anytime, and anywhere by removing locational, time and other restraints while increasing both the coverage and the quality. In this paper, we present applications and requirements of pervasive healthcare, wireless networking solutions and several important research problems. The pervasive healthcare applications include pervasive health monitoring, intelligent emergency management system, pervasive healthcare data access, and ubiquitous mobile telemedicine. One major application in pervasive healthcare, termed comprehensive health monitoring is presented in significant details using wireless networking solutions of wireless LANs, ad hoc wireless networks, and, cellular/GSM/3G infrastructure-oriented networks. Many interesting challenges of comprehensive wireless health monitoring, including context-awareness, reliability, and, autonomous and adaptable operation are also presented along with several high-level solutions. Several interesting research problems have been identified and presented for future research.     

Organisation of e-learning in a pervasive campus — a case study

Pervasive learning as key technology for tomorrow’s learning will enhance and modernise education — not just in academic teaching. Pervasive learning can be regarded as the latest evolutionof e-learning made possible through recent highly mobile techniques. Through the use of pervasive computing and the use of omnipresent technologies, the presence of these technologies is becoming less conspicuous. Such development leads towards a new organisation of the whole learning environment, called a pervasive campus. This further advances mobile learning for an effectively organised blended learning. In this paper, we propose an architecture with related components and services that facilitates the implementation of pervasive campus applications in dynamic and complex environments, such as those encountered in pervasive communities. We describe scalable, efficient (just-in-time) techniques for the synergistic integration of services into a pervasive campus.     

Pervasive Home Environments

For decades, technologists have been promising the intelligent house. The vision is usually portrayed as a house filled with technology which will do the dweller's bidding and take all domestic drudgery out of their lives. The truly intelligent house is still some way off, but the emergence of broadband, availability of faster, smaller and ever cheaper computing equipment and a variety of wired and wireless network technologies are enabling technologies that bring this vision closer to reality. These technology trends lead to the concept that computing and other smart devices will become pervasive, fully networked and disappear into the infrastructure of the home. People will carry out their tasks unaware of the complexity of the infrastructure that supports their activities in much the same way as people today use mains electricity.This paper introduces these concepts and discusses the technological challenges to be overcome. We present our vision of the pervasive home environment where inhabitants can focus on tasks rather than the technology: I need to create X and send it to Y rather than I need to use this computer and this application which needs access to service A and resource B. Although this sounds simple, the environment needs to understand who I is, and who or what Y is. Appropriate permissions must be in place and resources allocated, if available. The most appropriate interface for the task and user must be determined.The pervasive, intelligent home will make available new ways to access and share information. It will herald new services, such as care and support of people in the home, entertainment, educational and security services. The final part of the paper discusses the commercial opportunities and challenges which must be met, not least the need for industry to agree on open standards and interfaces.     

普适计算环境下的嵌入式数据库应用体系结构

嵌入式数据库技术是整个普适计算系统正常工作中的重要一环。在讨论了普适计算和嵌入式数据库的关系之后,简单介绍了嵌入式数据库的特点和关键技术,重点分析了普适计算环境对嵌入式数据库的要求及所面临的研究问题,并给出了使用DB2 EveryPlace建立嵌入式数据库系统应用的步骤,展望了普适计算与嵌入式数据库技术结合的应用前景和需要解决的一些课题。