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Abstrak :
This book gives a general picture of research-driven activities related to location and map-based services. The interdisciplinary character of the topic leads to a variety of contributions with backgrounds from academia to business and from computer science to geodesy. While cartography is aiming at efficient communication of spatial information, the development and availability of technologies like mobile networking, mobile devices or short-range sensors lead to interesting new possibilities of achieving this aim. By trying to make use of the available technologies, a variety of related disciplines looks specifically at user-centered and context-aware system development, especially in wayfinding and navigation systems.

Abstrak :
This book constitutes the refereed proceedings of the international competition aimed at the evaluation and assessment of Ambient Assisted Living, EvAAL 2012, which was organized in three major events: the Second International Competition on Indoor Localization and Tracking for Ambient Assisted Living, which took place in Madrid, Spain, in July 2012, the First International Competition on Activity Recognition for Ambient Assisted Living, which took place in Valencia, Spain, in July 2012, and the Final Workshop, which was held in Eindhoven, The Netherlands, in September 2012. The papers included in this book describe the organization and technical aspects of the competitions, and provide a complete technical description of the competing artefacts and report on the experience lessons learned by the teams during the competition.

Abstrak :
Perangkat dalam lingkungan ubiquitous memiliki memori dan daya proses yang terbatas, sehingga mereka tidak dapat menyediakan layanan secara utuh bahkan dalam lokasi yang tepat sekalipun.Teknologi mobile agent dapat diterapkan untuk meningkatkan efisiensi sumber daya. Tujuan dari paper ini adalah untuk melihat penerapan teknologi mobile agent pada lokasi berbasis layanan printer. Sistem ini terdiri dari empat bagian: (1) mobile agent server, (2) lokasi yang berbasiskan layanan server, (3) layanan printer, (4) klien. Hal ini menunjukkan bahwa mobile agent menawarkan banyak keuntungan untuk pengaturan komputasi ubiquitous dan mobile.

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Most devices in ubiquitous network environment have limited memory and processing power, thus they can’t provide all services even when in suitable locations. Mobile agent technology could be implemented to improve resource efficiency. The goal of this paper is to implement mobile agent technology for location-based printer service. The system consists of four parts: (1) mobile agent server, (2) location-based service server, (3) printer service, (4) client. It is observed that mobile agent offers many advantages for ubiquitous and mobile computing settings.

Abstrak :
This volume wipes away a host of problems related to location discovery in wireless ad-hoc sensor networks. WASNs have recognized potential in many applications that are location-dependent, yet are heavily constrained by factors such as cost and energy consumption. Their “ad-hoc” nature, with direct rather than mediated connections between a network of wireless devices, adds another layer of difficulty. Basing this work entirely on data-driven, coordinated algorithms, the author’s aim is to present location discovery techniques that are highly accurate and which fit user criteria. The research deploys nonparametric statistical methods and relies on the concept of joint probability to construct error (including location error) models and environmental field models. It also addresses system issues such as the broadcast and scheduling of the beacon. Reporting an impressive accuracy gain of almost 17 percent, and organized in a clear, sequential manner, this book represents a stride forward in wireless localization.