PURPOSE This descriptive study aims to describe the levels of mobility in community-dwelling older Koreans with chronic illnesses, and to examine the associations of their mobility with sleep patterns, physical activity and physical symptoms including fatigue and pain. METHODS The participants were a total of 384 community-dwelling older adults recruited from three senior centers in Seoul, Ko...

AIM To identify early clinical variables that are most predictive of treatment outcome and to develop a model that will allow prediction of treatment outcomes based on these variables. STUDY DESIGN AND METHODS A dental trauma database was used to randomly identify patients who had received treatment for avulsed teeth between 1998 and 2007. A data extraction form was designed and completed for...

With the emerging of location-based social networks, study on the relationship between human mobility and social relationships becomes quantitatively achievable. Understanding it correctly could result in appealing applications, such as targeted advertising and friends recommendation. In this paper, we focus on mining users’ relationship based on their mobility information. More specifically, w...

Provision of seamless service to multimedia applications in cellular wireless networks largely depends on the way calls are handled during handoff. Hence, sufficient resources must be provided for handoff (HO) connections when a mobile station (MS) moves from one cell to another. Effective allocation of resources can be achieved when the exact future trajectory of MSs is known in advance. Howev...

Multimedia and video streaming applications are becoming more popular and used by most of the users because of advances in mobile devices and mobile wireless networks. Maintaining continuity of video stream in mobility, handover protocol plays a pivotal role. The important task of handover process is handover prediction and decision. This paper presents a novel approach by considering a traditi...

Recent advances in mobile computing, and strong interest of the scientific community in the Grid have led to research into the Mobile Grid. One primary issue associated with the efficient and effective utilization of mobile resources in a mobile grid is scheduling of tasks. In this paper, a task scheduling algorithm is proposed based on the dynamic prediction of resource mobility and battery po...

In mobile ad hoc networks node movements induce frequent topology changes. Therefore, traffic paths are often interrupted, until an ad hoc routing protocol recovers the path failure. These disruptions have negative impact on the network throughput, particularly when the transport protocol is TCP. In this paper we analyze the effect of route disconnections on TCP performance and present a routin...

In this paper we provide an extensive performance evaluation of an already introduced advanced handover management solution which aimed at providing ubiquitous IPv6 connection and seamless Internet access for network mobility (NEMO) scenarios. The novel solution makes use of geographic location information and previous records of access network parameters. The method exploits the benefits of mu...

Geographical routing protocols have been received serious attention due to their advantages as compared to conventional routing protocols. They require information about the physical position of nodes to be available. Commonly, each node determines its own position through the use of Global Positioning System (GPS) or some other type of positioning service. Greedy Perimeter Stateless Routing (G...

Predicting users' next location allows to anticipate their future context, thus providing additional time to be ready for that context and react consequently. This work is focused on a set of LZ-based algorithms (LZ, LeZi Update and Active LeZi) capable of learning mobility patterns and estimating the next location with low resource needs, which makes it possible to execute them on mobile devic...