In this paper we illustrate a novel Wireless Local Area Network Multiple Access Control (WLAN MAC) protocol whose allocation policy adopts a strategy similar to the token ring: the mobile stations access the channel upon receiving the token and release the channel by passing the token to the next user. The traffic is divided in two classes: Guaranteed Bandwidth (GB) and Best Effort (BE). The ba...

Structural Controllability of Multi-Agent Systems Subject to Partial Failure Saeid Jafari Formation control of multi-agent systems has emerged as a topic of major interest during the last decade, and has been studied from various perspectives using different approaches. This work considers the structural controllability of multiagent systems with leader-follower architecture. To this end, graph...

introduction social trust is an important issue in development matter. it is a new mater and concept in development in general and rural development in particular. dimensions of social trust are the most important purpose for bi-lateral and multi-lateral behaviors. people trust to each other to make relation and through this way they learnt that without participation and cooperation they cannot...

Background: Contrast-induced nephropathy (CIN) is defined as the absolute ≥ 0.5 mg/dL or relative > 25% increase in serum creatinine from baseline on admission to 48–72 h following exposure intravascular iodinated contrast media. The objective of this research was assess predictive value PRECISE DAPT score for development CIN acute coronary syndrome cases undergoing PCI and compare its power...

Reliability is an important performance index of a modern power electronics converter. The failure modes and effect analysis (FMEA) is one the mostly used techniques to evaluate or possibly improve the reliability of a power electronic system. This is one of the key challenges in electronics converters for vehicle industry. The project aim is to increase the reliability of a 3.3 kW on-board veh...

Groundwater is a major source of water for domestic, industrial, and agricultural sectors in many countries. The main objective of this research was to provide an overview of present groundwater quality using parameters such as calcium, magnesium, sodium, chloride, sulfate, pH, and electrical conductivity (EC) in the Mehran plain, Ilam province using GIS and geostatistical techniques. A total o...

Contrast-induced nephropathy (CIN) is a serious adverse reaction to contrast agents used in radiography. It important study the epidemiology of CIN and risk factors for developing complication order improve quality care that patients receive during coronary interventions. The aim was investigate incidence after angiography (CAG) with iopromide analyse cost-effectiveness using this agent multidi...