This paper proposes a location-based service for disseminating geo-localised information generated by and aimed at mobile users. The service itself works in a self-organising manner. A piece of hovering information is attached to a geographical point, called the anchor location, and to its vicinity area, called the anchor area. It is responsible for keeping itself alive, available and accessibl...

Anchor DMUs are a new class in the general classification of Decision Making Units (DMUs) in Data Envelopment Analysis (DEA). An anchor DMU in DEA is an extreme-efficient DMU that defines the transition from the efficient frontier to the free-disposability part of the boundary of the Production Possibility Set (PPS). In this paper, the anchor points of the PPS of the CCR model are investigated....

Mobile IPv4 is a standard mobility protocol that enables an IPv4 device to move among networks while maintaining its IP address. The mobile device has the Mobile IPv4 client function to signal its location to the routing anchor, known as the Home Agent. However, there are many IPv4 devices without such capability due to various reasons. This document describes Proxy Mobile IPv4 (PMIPv4), a sche...

In Proxy Mobile IPv6, packets received from a Mobile Node (MN) by the Mobile Access Gateway (MAG) to which it is attached are typically tunneled to a Local Mobility Anchor (LMA) for routing. The term "localized routing" refers to a method by which packets are routed directly between an MN’s MAG and the MAG of its Correspondent Node (CN) without involving any LMA. In a Proxy Mobile IPv6 deployme...

Trust has been a longtime concern for people when deciding whether or not to engage in online shopping. This has resulted in a variety of studies on trust and eCommerce. Recently, there has been widespread growth of mobile shopping and buying, termed mCommerce. With this comes a need to understand if and how trust issues manifest themselves in mCommerce activities and how to design for trustful...

In Wireless Sensor Networks (WSNs), localization is considered as one of the most significant issue as it plays a critical role in many applications such as target tracking, routing etc. The main idea of localization in wireless sensor networks is that some deployed nodes with known coordinates (e. g. , GPS-equipped nodes) transmit beacons with their coordinates in order to help the other nodes...

In wireless sensor networks (WSNs), many applications require location awareness. GPS is generally not suitable to establish indoor locations. In this paper, we propose a GPS-free and Anchor-free (GFAF) indoor localization algorithm. GFAF algorithm uses a mobile node to move according to a special trajectory in deployment area and the mobile node calculates its real-time coordinate according to...

In this paper1, we propose a simple method to introduce a-priori information in position estimation for mobile ad hoc and sensor networks, in order to improve the estimation accuracy. The a-priori information is derived from the movement of the mobile node with respect to the position of fixed anchor nodes, and it is exploited to perform Bayesian estimation procedure. Numerical simulation resul...