A rapid development in mobile telecommunication is the use of location information for context aware service. To amalgamate multiple location sensor technologies, we developed an Intelligent Service Area and Region Identification System (iSARIS) to allocate system resource for mobile service discovery and tracking. Primary location service is provided by cell identification which maps a wide re...

Location-aware application s need not only rapid location-related query, but also proactive spatial event service, both of which the traditional database system does not excel at. Aiming at the deficiencies of database system, we present a light-weighted proactive spatial service model for Smart Classroom: ASMod. This model adopts such new technologies as combined spatial index, refreshing-up &...

Location-awareness is useful for mobile and pervasive computing. We present a novel adaptive framework for recognizing personally important locations in cellular networks, implementable on a mobile device and usable, e.g., in a presence service. In comparison, most previous work has used service infrastructure for location recognition and the few adaptive frameworks presented have used coordina...

The Web is on its way to becoming a location-aware information system. This transition causes some technical and policy challenges in terms of both design and coordination with existing approaches in this area. In this paper we propose that managing the transition to location-awareness (and some other aspects) requires a more strategic approach than has been taken thus far.

The location-aware keyword query returns ranked objects that are near a query location and that have textual descriptions that match query keywords. This query occurs inherently in many types of mobile and traditional web services and applications, e.g., Yellow Pages and Maps services. Previous work considers the potential results of such a query as being independent when ranking them. However,...

User location service for context-aware applications in wireless network is of great academia and industry interest, many research efforts were spent on obtaining location information within wireless network. This paper presents a different approach of determining location information. The location information is obtained over an ad-hoc wireless network, using IEEE 802.11 protocol. A triangulat...

With the advances in wireless communications and technologies of mobile devices, location-based applications or services will become an essential part of future applications. We have developed a location-based application, NAPA, that assists users to find a nearest parking space on campus. NAPA is an example of such applications, which combines a number of new features such as location-based, w...

In this paper, we develop a capacitated location-covering model considering interval values for demand and service parameters. We also consider flexibility on distance standard for covering demand nodes by the servers. We use the satisfaction degree to represent the constraint of service capacity. The proposed model belongs to the class of mixed integer programming models. Our model can be redu...

Location-allocation of facilities in service systems is an essential factor of their performance. One of the considerable situations which less addressed in the relevant literature is to balance service among customers in addition to minimize location-allocation costs. This is an important issue, especially in the public sector. Reviewing the recent researches in this field shows that most of t...