This paper proposes the solution for improving the services provided by the transport management by using GPS and GSM modem integration. The system mainly consists of three modules. (1) Bus station module (2) Bus module (3) Base station module. The modules are connected to PC and GSM modem. The initial information containing the bus number and license plate from bus station module is sent to bu...

The IEEE 802.11 standard requires that a beacon station has to stay in awake after generating a beacon frame to serve probe request. This requirement make a reason to consume valuable power of beacon station even though there are no frame exchanges between stations or there exists only one station in the ad hoc network. This paper proposes an ePSM(Enhanced Power Save Mode) to reduce effectively...

The paper studies a closed queueing network containing a server station and k identical client stations. The client stations are subject to breakdowns, and a lifetime of each client station is assumed to be a random variable independent of all other ones having the probability distribution ) (x G . The server station is an infinite server queueing system, and client stations are single server q...

We investigate the problem of repacking stations in the FCC’s upcoming, multi-billion-dollar “incentive auction”. Early efforts to solve this problem considered mixed-integer programming formulations, which we show are unable to reliably solve realistic, national-scale problem instances. We describe the result of a multi-year investigation of alternatives: a solver, SATFC, that has been adopted...

In order for the Bureau of Land Management (BLM) to comply with the Government Performance and Results Act (GPRA), and better meet the needs of the public; a visitor satisfaction survey was conducted at 23 BLM recreation sites in 11 states during fiscal year 2009 (FY09). The survey was developed to measure each site's performance related to BLM GPRA Goal 3.1 Provide for a quality recreation exp...

is one of the most important broadband wireless technologies and is anticipated to be a viable alternative to traditional wired broadband techniques due to its cost efficiency. Being an emerging technology, WiMAX supports multimedia applications such as voice over IP (VoIP), voice conference and online gaming. It is necessary to provide Quality of Service (QoS) guaranteed with different charact...

The user terminal The terminal provides a simple user interface consisting of a smart card system, keyboard, monitor, and printer. After inserting a smart card into the smart-card reader, the user keys in a password and selects the kind and amount of fuel. The user can check the smart card’s records and updated status. During refueling, the monitor displays the procedure’s progress. The printer...

This document is one of the parts of the electronic version of the PhD thesis by S F M van Vlijmen The goal of the PhD project was to get a better under standing of the problems with the integration of formal speci cation technique in the day to day software practice The approach followed was to execute a number of projects in cooperation with industry on realistic cases In this document is rep...