Reconfigurable Mobile Multimedia Systems

This paper discusses reconfigurability issues in lowpower hand-held multimedia systems, with particular emphasis on energy conservation. We claim that a radical new approach has to be taken in order to fulfill the requirements - in terms of processing power and energy consumption - of future mobile applications. A reconfigurable systems-architecture in combination with a QoS driven operating system is introduced that can deal with the inherent dynamics of a mobile system. We present the preliminary results of studies we have done on reconfiguration in hand-held mobile computers: by having reconfigurable media streams, by using reconfigurable processing modules and by migrating functions

Mobile Commerce: Assessing New Business Opportunities

Mobile commerce has become the latest topic for today. Business organizations have been restlessly evaluating the revenue potential of the m-commerce market and developing business models to exploit the huge profit potential of this new market. In this project we try to provide an overview of the fundamentals about m-commerce. This paper attempts to help business managers, particularly those without IT background, to understand the key elements and basic concepts of m-commerce and to assess the impact of m-commerce on current and future businesses as well as to identify new business opportunities

Spatial scene adaptation in broadcast environment

The heterogeneity of handheld terminals in terms of screen resolution, processing capabilities or available decoding memory is a challenge for multimedia services that have been tackled by many scene adaptation techniques so far. In broadcast environment, the adaptation intelligence must be transmitted along with the content and may induce critical costs that must be minimized. In this paper, we propose a broadcast-friendly adaptation technique of the spatial layout of multimedia content based on the use of incremental scene updates. The advantages of our approach have been evaluated on a T-DMB digital radio service and compared to other adaptation techniques applicable to broadcasted multimedia services. Experimental results show that fine-grained spatial adaptation on constrained handheld terminals can successfully be achieved through adaptation scene updates with a limited bandwidth overhead

Sketch-based Queries in Mobile GIS-Environments

Recent achievements in the field of mobile computing and wireless communication promise data retrieval anywhere and anytime. This development provided the basis to expand GIs technology to handheld devices, such as personal digital assistants (PDAs). Although traditional GIs technology is well suited for desktop workstations, it needs to be adapted in order to satisfy the requirements of users using handheld computing devices. This adaptation is necessary because the usability of traditional GISs depends on characteristics of desktop computers, such as their relatively large user interfaces (e.g., displays, keyboards, pointing devices), considerable computing resources (i.e., CPU, memory, storage, operating systems), and high bandwidth network connectivity. Small devices possess few of these characteristics, hence, requiring new and efficient methods for interaction with spatial databases. We propose a concept that supports sketch-based querying in mobile GIs environments. This concept combines newest techniques for spatial querying and mobile technologies. Such a combination is beneficial for users because it allows them to formulate queries by drawing the desired configuration with a pen on the touch-sensitive PDA screen, and consequently avoids typing complex statements in some SQL-like query language. Client-server architectures in mobile environments are characterized by low and fluctuating bandwidth, and by frequent disconnections. We discuss client-server strategies in mobile environments, suggest an adaptive client-server architecture for geomobile querying, and analyze the performance. It is shown that adaptation to the mobile environment is necessary in order to ensure efficiency of geo-mobile queries

Role of Wireless technology in mobile augmented reality system (MARS)

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A technology white paper on improving the efficiency of social safety net program delivery in low income countries an introduction to available and emerging mobile technologies

This document outlines various available and emerging information and communication technologies (ICTs) and provides a framework to assess how these technologies may be used to improve the efficiency of the delivery of safety net programs. These technologies include: mobile computing, biometrics, satellite communications, simple and smart cards, global positioning systems, radio frequency identification tags, automated teller machines and solar power. Their use in the administration, delivery and monitoring of SSN programs offers numerous advantages including increased accuracy, reliability and timeliness of information, performance measurement and service provider accountability. However, these new and emerging technologies typically require higher initial investment costs that benefit current and future time periods. The optimal solution to design an advanced and efficient delivery system for a safety net program may be a combination of traditional service delivery methods and new technologies that draws on a needs assessment that accounts for local conditions and program characteristics.