نتایج جستجو برای: mobile phone

تعداد نتایج: 231591  

2017
Ming Yang WenWen Guo ChunSheng Yang JianQin Tang Qian Huang ShouXin Feng AiJun Jiang XiFeng Xu Guan Jiang

OBJECTIVE Many studies have previously investigated the potential association between mobile phone use and the risk of glioma. However, results from these individual studies are inconclusive and controversial. The objective of our study was to investigate the potential association between mobile phone use and subsequent glioma risk using meta-analysis. METHODS We performed a systematic search...

Journal: :journal of biomedical physics and engineering 0
e kazemi smj mortazavi 1. medical physics department, school of medicine, shiraz university of medical sciences, shiraz, iran a ali-ghanbari s sharifzadeh r ranjbaran z mostafavi-pour

background , despite numerous studies over a decade, it still remains controversial about the biological effects of rf emf emitted by mobile phone telephony. objective , here we investigated the effect of 900 mhz gsm on the induction of oxidative stress and the level of intracellular reactive oxygen species (ros) in human mononuclear cells, monocytes and lymphocytes as defence system cells. met...

Journal: :journal of biomedical physics and engineering 0
a rafati s rahimi a talebi a soleimani m haghani s m j mortazavi

introduction : the fast-growing telecommunication and wireless technologies has led to more dependence to these communication devices and higher levels of exposure to electromagnetic radiations propagated by cellular devices and their service towers. to disable signaling in places where silence is valued or where information quarantine measures are required, mobile phone jammers emit radiofrequ...

Journal: :journal of biomedical physics and engineering 0
s a r mortazavi m haghani s zarei n rastegarian n alighanbari m haghparast

mobile phones, mobile phone base stations, cordless phones and power lines are among the main sources of our daily exposures to radiofrequency electromagnetic fields (rf-emf). today, a large proportion of children aged eight and under has used smart phones and tablets for media activities such as playing online games, watching videos or using different applications. over the past several years,...

2015
Louis Leung Jingwen Liang

This chapter reviews the literature on mobile phone addiction, the excessive use of mobile phone technology, which is an impulse control disorder with negative social and psychological consequences. It provides a clear definition of mobile phone addiction, along with its theoretical origin, diagnostic criteria for assessment, and an identification of the symptoms and consequences of addictive b...

Journal: :Connections 2014
W Scott Comulada

Mobile phone-based data collection encompasses the richness of social network research. Both individual-level and network-level measures can be recorded. For example, health-related behaviors can be reported via mobile assessment. Social interactions can be assessed by phone-log data. Yet the potential of mobile phone data collection has largely been untapped. This is especially true of egocent...

Journal: :New Media & Society 2005
Hans Geser

Mobile telecommunications such as voice telephony, SMS, WLAN (wireless local area network) technology, and personal digital assistants (PDAs) are being used by broader and broader sections of society. As a result of this increased usage (particularly for mobile-phone use), there is a small but growing body of research that indicates that the use of mobile communications is influencing how we go...

Journal: :Environmental health and preventive medicine 2014
Kayoko Ikeda Kazutoshi Nakamura

OBJECTIVES Mobile phones are commonly used by adolescents. The aim of this study was to clarify associations between duration of mobile phone use and psychological mood in high school students. METHODS This cross-sectional study included 2,785 high school students in Niigata, Japan. A self-administered questionnaire was used to elicit information on sex, school year, hours of mobile phone use...

Journal: :Accident; analysis and prevention 2008
Jack Nasar Peter Hecht Richard Wener

Driver distraction is a major cause of traffic accidents, with mobile telephones as a key source of distraction. In two studies, we examined distraction of pedestrians associated with mobile phone use. The first had 60 participants walk along a prescribed route, with half of them conversing on a mobile phone, and the other half holding the phone awaiting a potential call, which never came. Comp...

2018
Kohei Arai

Mobile phone operations using human eyes only is proposed together with its applications for cooking with referring to recipes and manufacturing with referring to manuals, production procedure, so on. It is found that most of mobile phone operations can be done without touching the screen of the mobile phone. Also, mobile phone operation success rate based on the proposed method is evaluated fo...

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