this study aimed at the frequency and type of using cell-phone by high school students. the research method used was a descriptive-survey one. the statistical society included all the high school students in mazandran in 2010-11 academic year. the sample was chosen through multi-stage stratified random sampling method and 383 subjects were selected based on kerjecie and morgan's table. a r...

The mechanisms which enable the vast majority of computer attacks are based on design and programming errors in networked applications. The growing use of voice over IP (VOIP) phone technology makes these phone applications potential targets. We present a tool to perform security testing of VOIP applications to identify security vulnerabilities which can be exploited by an attacker. Session Ini...

Introduction:Using cell phone has become an inseparable part of the life in the recent years. In spite of the useful usage of the cell phone, its constant over-use makes the field for people’s addiction and harms. The purpose of the present research is to analyze the relation between the cell phone’s scale and the way of use with the motivation of educational progress among the female students’...

Introduction: There are general concerns about the hazardous impacts of the cell phones radiation on the human health. In this study, the structural and biochemical changes of the mice kidney were assessed after cell phone exposure in. Materials and methods: A total of 40 Balb/C mice were randomly divided into the control and experimental groups. The experimental group exposed to cell phon...

background: poisoning is one of the main causes of visits to emergency departments and hospitals in iran. drug and poison information centers (dpic) are reliable sources to guide poisoned patients and provide information about pharmaceutical agents. this study was designed to analyze recorded phone calls to iran dpics during 2011-2012. methods: this was a retrospective study on phone calls to d...

Mobile phones are two-way radios that emit electromagnetic radiation in microwave range. As the number of mobile phone users has reached 6 billion, the bioeffects of exposure to mobile phone radiation and mobile phone electromagnetic interference with electronic equipment have received more attention, globally. As self-monitoring of blood glucose can be a beneficial part of diabetes control, ho...

objective: electro-magnetic radiation (emr) is emitted from mobile phones. various researches have shown relationships between mobile phone emr exposure to cancer and neurologic damages. this study aims to investigate the effects of mobile phone emr on brain antioxidant enzyme activity and the learning process. methods: rat pups and their dames were exposed to emr for 3 h per day from p2 to p1...

Generally, phone recognition system contains only a single phone recognizer. The phone set and speech representation for a recognizer are optimized for a particular task. This paper studies the effect of phone sets and speech representations for TIMIT phone recognition task. Two phone sets (TIMIT original phone set and 39 classical phone set) and two speech representations (MFCC-based and PLP-b...

reviews in many countries indicate that drivers often talk on mobile (cell) phones. studies have been done on possible effects of concurrent mobile phone use on driving performance. previous studies have found that phone talking could impairs performance on simulated or instrumented driving tasks, using such measures as reaction time, following distance, and situational awareness. most of these...