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Geospatial information is used as a core base information for U-City in all areas including planning, construction, operation, and management, and it is a service factor inevitable for U-City residents' convenience and safety. Spatial information required for U-City are digital map, ortho image, various facilities drawing, estate site plan, and so on. In addition, airborne/terrestrial LiDAR, RFID,...
For ubiquitous computing environments, an important assumption is that all the components in any specific environment are connected with each other. With this assumption, we can share various kinds of content across mobile terminals. This paper introduces an effective scheme to manage multimedia sharing based on specially designed profiles and a virtual community. A virtual community is defined as...
In the ubiquitous computing environment, image processing system will play an increasingly more significant role in ensuring safety of industrial sites in the future. In step with the advancements of image processing technologies, surveillance monitoring system and automation system are under the spotlight as key elements in industrial sites and leveraging intelligent ubiquitous systems effectively...
This paper presents an architectural model for wireless peer-to-peer (WP2P) file sharing system for ubiquitous mobile devices. File sharing is one of the rationales for computer networks with increasing demand for file sharing applications and technologies in small and large enterprise networks and on the Internet. With the popularity of mobile phones in day-to-day activities, P2P file sharing in...
For ubiquitous computing environments, an important parameter is whether all the components in the specific environment can connect with one another. Given this capability, we can share various kinds of content across mobile terminals. This paper introduces an effective scheme to manage multimedia sharing based on specially designed profiles and a virtual community. A virtual community is defined...
In the real world it is very difficult to implement real-time models in uncontrolled distributed environments and to support well-defined interfaces from real-time systems to external systems. An ongoing project for ubiquitous computing environments, u-GIS based informative construction technology innovation project needs a system to handle and control various data (sensor data, visual data, equipment...
In this paper, an energy efficient adaptive back forwarding method is proposed for spatial range query processing in ubiquitous sensor networks. In order to execute spatial range query efficiently in sensor networks, many rectangle based index methods are researched, such as SPIX method. This kind of method is efficient to transmit user queries to the queried range, but it defines the sensor nodes'...
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