Location based routing protocols are heavily dependent on location services which provide the position information of the desired destination node. Seldom location service schemes include energy efficiency metrics when evaluating their performance in forwarding location update and query packets. We propose a novel location service that aims at decreasing the distance traveled by the location up...

Location based routing protocols are heavily dependent on location services which provide the position information of the desired destination node. Seldom location service schemes include energy efficiency metrics when evaluating their performance in forwarding location update and query packets. We propose a novel location service that aims at decreasing the distance traveled by the location up...

In this paper, the efficiency of the performance of some independent units of police organization was evaluated to optimize the total used inputs and the total produced outputs of each unit. For this purpose, with regard to the efficiency and inefficiency of each unit, based on the location of the units to one another, and also due to the limitations on number and the way of transferring the fo...

increasing of the distribution efficiency is one of the most objectives of an integrated logistic system developed as a new management philosophy in the past few decades. the problem is examind in two parts: facilities location problem (flp) for long policies and vehicle routing problem (vrp) to meet the customer demand. these two components can be solved separately; however, this solution may ...

Real-Time Location Systems (RTLS) have become very popular in recent years. These systems provide a contemporary layer of automation named automatic object location detection. Location measurements involve the transmission and reception of signals between hardware components of a system. A RTLS consists of at least two separate hardware components: a signal transmitter and a measuring unit. The...

In certain circumstances an individual may not be in control of their private location information and thus vulnerable to a privacy violation. In this paper, we ensure location privacy through the establishment of a prohibitive contract in a situation where an individual wishes to minimize privacy loss and a service provider aims to maximize profits. Given the possible strategies we show that a...

This paper presents three new mechanisms for the Service Location Protocol (SLP): mesh enhancement, preference filters and global attributes. The mesh enhancement simplifies Service Agent (SA) registrations and improves consistency among Directory Agents (DAs) by defining an interaction scheme for DAs and supporting automatic registration distribution among peer DAs. Preference filters facilita...