Abstract: Increasing demand for mobility in wireless data networks has given rise to various mobility management protocols. The protocols use signalling messages to maintain reachability of mobile nodes. Increase in the number of mobile nodes gives rise to the scalability issues that need to be dealt with to avoid performance degradation of the network. In this paper, we have developed analytic...

Despite the long history of modelling human mobility, we continue to lack a highly accurate approach with low data requirements for predicting mobility patterns in cities. Here, we present a population-weighted opportunities model without any adjustable parameters to capture the underlying driving force accounting for human mobility patterns at the city scale. We use various mobility data colle...

This paper presents the concept of role mobility and the value of role mobility in an open service environment. We outline the aspects of role management and role mobility and we describe an open, reusable component for role management. Then, we show how this component can be deployed in a TINA environment with a minimum number of changes to the TINA service architecture.

It is nowadays well known that All-IP networks will be the future B3G networks. However, in order to make these networks as good as 2 or 3G networks with respect to the performance, many challenges have to be faced. One of the main challenges is the developing of suitable mobility solutions to support seamless and fast movement in the network. Mobile IP (MIP) presents the standard mobility mana...

background and aim: total hip replacement (thr) is done comprehensively all over the world. despite the effects of braces on control of thr complications , few studies have been performed on this subject. the purpose of this study was to evaluate immediate effect of hip abduction brace on mobility and functional balance of patients with thr.    materials and methods: eight men and nine women wi...

Based on application requirements, nodes are static or mobile in Wireless Sensor Networks (WSNs). Mobility poses challenges in protocol design, especially at the link layer requiring mobility adaptation algorithms to localize mobile nodes and predict link quality to be established with them. This study implements XMAC and Berkeley Media Access Control (BMAC) routing protocols to evaluate perfor...

IP mobility addresses the problem of changing the network point-of-attachment transparently during movement. Mobile IP is the proposed standard by IETF. Several studies, however, have shown that Mobile IP has several drawbacks, such as triangle routing and poor handoff performance. Multicast-based mobility has been proposed as a promising solution to the above problems, incurring less end-to-en...

IP based Wireless Sensor Networks (IP-WSNs) are gaining importance for their broad range of applications in health-care, home automation, environmental monitoring, industrial control, vehicle telematics and agricultural monitoring. In all these applications, mobility in the sensor network with special attention to energy efficiency is a major issue to be addressed. Host-based mobility managemen...

Housing mobility programs enable families living in high-poverty neighborhoods to relocate to lowerpoverty neighborhoods using tenant-based subsidies. Recent research indicates that these programs improve participant outcomes on a number of economic and social outcomes. Can such programs be run at a scale sufficient to help a large proportion of eligible families? Would doing so change the char...