نتایج جستجو برای: gsm mobile phones

تعداد نتایج: 177530  

2016
S. M. J. Mortazavi S.M. Owji M.B. Shojaei-fard M. Ghader-Panah S.A.R. Mortazavi A. Tavakoli-Golpayegani M. Haghani S. Taeb N. Shokrpour O. Koohi

BACKGROUND The rapidly increasing use of mobile phones has led to public concerns about possible health effects of these popular communication devices. This study is an attempt to investigate the effects of radiofrequency (RF) radiation produced by GSM mobile phones on the insulin release in rats. METHODS Forty two female adult Sprague Dawley rats were randomly divided into 4 groups. Group1 w...

Journal: :Digital Investigation 2012
Matthew Tart Iain Brodie Nicholas Gleed James Matthews

The data stored on mobile phones is a common source of investigative and evidential material, but there may be further useful information available such as Call Detail (or Data) Records linked to the SIM card used, held by network operators for billing purposes. Historic Cell Site Analysis involves the analysis of these records, in conjunction with other information such as survey and geographi...

2009
Simon So

The short message service (SMS) technology is one of the most stable mobile technologies around. Most of our tertiary students carry mobile phones with SMS facilities and can be used for teaching and learning. There are many projects of using SMS technologies in education as outlined in the literature review, but many publications do not provide the possible underlying technologies to implement...

E.N. Ajani

The study was carried out in Anambra State, Nigeria. Questionnaire was used to collect data from a sample of one hundred and eight (108) small-scale farmers. Percentage, mean score, standard deviation and factor analysis were used for data analysis. The duration of the study was June 2009 and March, 2010. Results of the study indicated that the major constraints to effective use of ICTs by smal...

2015
S. M. J. Mortazavi S. Rahimi A. Talebi A. Soleimani A. Rafati

BACKGROUND The rapid development of wireless telecommunication technologies over the past decades, has led to significant changes in the exposure of the general public to electromagnetic fields. Nowadays, people are continuously exposed to different sources of electromagnetic fields such as mobile phones, mobile base stations, cordless phones, Wi-Fi routers, and power lines. Therefore, the last...

A. Rashidy-Pour, B. Bolouri, M. Jadidi, S.M.P. Firoozabadi, Y. Fathollahi,

Introduction: Over the last decade, exposure to non-ionizing electromagnetic waves due to base station antenna has increased. This in vivo study was planned for evaluating the effects of whole-body exposure to 950 MHz field of GSM mobile phone system on rat dentate gyrus long-term potentiation. Materials and Methods: 24 naive male Wistar rats (3 month old, 225|¡|25 g) were randomly divided in t...

2006
Mike Y. Chen Timothy Sohn Dmitri Chmelev Dirk Hähnel Jeffrey Hightower Jeff Hughes Anthony LaMarca Fred Potter Ian E. Smith Alex Varshavsky

This paper examines the positioning accuracy of a GSM beaconbased location system in a metropolitan environment. We explore five factors effecting positioning accuracy: location algorithm choice, scan set size, simultaneous use of cells from different providers, training and testing on different devices, and calibration data density. We collected a 208-hour, 4350Km driving trace of three differ...

2005
Simon Fong Edison Lai

Mobile Phone has been widely used in the world and adopted in different application areas involved with SMS has been evolved for downloading logo, ring-tones, advertisement, security notes, and location based system. This paper describe a service that further extends the functionality of SMS, a prototype named as “SMS Credit” is developed that allows customers to perform electronic payment usin...

Abstract Introduction: Mobile phones create high-frequency electromagnetic fields around them when in use. The close proximity of mobile phones to the user’s head leads to the absorption of part of the electromagnetic waves into the head and the brain. Methods: We have elucidated the alteration in cognitive function of the male and female offspring rats, which were exposed to chronic mobi...

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