Seamful design is a novel approach to Ubiquitous and Mobile Computing systems that reveals and exploits inevitable technical limitations and boundaries as well as their effects on seamless interaction rather than hiding them. In this paper we want to introduce its general ideas, point out common seams on the mobile phone platform and show how people might accommodate to seams and use them for t...

Due to the rapid development in mobile communication technologies, the usage of mobile devices such as cell phone or PDA becomes increasingly popular. As different devices require different applications, various new services are being developed to satisfy the needs. One of the popular services under heavy demand is the Location-based Service (LBS) that exploits the spatial information of moving...

Group communication will undoubtedly be a useful paradigm for many applications of wireless networking in which reliability and timeliness are requirements. Moreover, location-awareness is clearly central to mobile applications such as traffic management and smart spaces. In this paper, we introduce our definition of proximity groups in which group membership depends on location and then discus...

Location-based services and applications are especially useful in mobile computing environments. However, mobile computing environments are intrinsically heterogeneous, since different network technologies could be used and integrated, like GPRS and 802.11. The challenge for researches and industry is to build a common infra-structure that enable the development of mobile applications despite s...

Routing protocol for wireless mobile sensor networks can be active, can also be passive. The network all wireless sensor node is base station and the gateway for two-way communication. To complete the training parameters, which can be called the training function is used to train the BP neural network. The paper presents design and implementation of wireless sensor network nodes based on BP neu...

the study was carried out in anambra state, nigeria. questionnaire was used to collect data from a sample of one hundred and eight (108) small-scale farmers. percentage, mean score, standard deviation and factor analysis were used for data analysis. the duration of the study was june 2009 and march, 2010. results of the study indicated that the major constraints to effective use of icts by smal...

Due to the rapid development in mobile communication technologies, the usage of mobile devices such as cell phone or PDA has increased significantly. As different devices require different applications, various new services are being developed to satisfy the needs. One of the popular services under heavy demand is the location-based service (LBS) that exploits the spatial information of moving ...

Existing research on event-based middleware for mobile computing has mainly focused on supporting nomadic applications using wireless data communication based on the infrastructure network model. Relatively little work has been done to accommodate collaborative applications that often use ad

The technology for determining the geographic location of cell phones and other hand-held devices is becoming increasingly available. It is opening the way to a wide range of applications, collectively referred to as Location Based Services (LBS), that are primarily aimed at individual users. However, if deployed to retrieve aggregated data in cities, LBS could become a powerful tool for urban ...