نتایج جستجو برای: 1 computer

تعداد نتایج: 3196702  

Journal: :iranian journal of medical physics 0
faramarz madjidi department of occupational health engineering, school of health, zanjan university of medical sciences, parvin etesamee avenue, zanjan, iran

introduction blue light is a part of the spectrum with the highest energy content, which can reach the retina. the damage that it can cause to the retina is called photochemical or blue-light retinal injury. for the retinal injury assessment of the photochemical and aphakic retinal hazards in the wavelength range of 300-700 nm, use of effective spectral radiance limits (w.m-2.sr-1) seems to be ...

Computer technology has influenced the realm of language teaching and testing so drastically that no language teaching program could be imagined nowadays without the use digitized software and mul- timedia. This study aims at investigating Iranian EFL learners' performance on paper-based test com- pared with their performance on computer-based test while considering their attitudes towards the ...

Journal: :iranian journal of public health 0
s canbaz a tevfik sunter y peksen ma canbaz

background: the internet addiction, also described as pathological internet use (piu), is conceptualized by an individual's in­ability to control his or her use of the internet, which eventually causes marked distress and/or functional impairment. the aim of the present study was to investigate the prevalence of the piu among adolescence, in relation to different internet ac­tivities, and to ex...

Journal: Addiction and Health 2013
Hassan Sarmadi Ansar Mahmoud Zivari Rahman Majid Shokouhi Moqhaddam Mehran Aminaee Noshiravan Khezri Moghadam Solmaz Shokouhi Moqhaddam, Zeinab Javanmard

Background: Today, due to developing communicative technologies, computer games and other audio-visual media as social phenomena, are very attractive and have a great effect on children and adolescents. The increasing popularity of these games among children and adolescents results in the public uncertainties about plausible harmful effects of these games. This study aimed to investigate the co...

Mazloumi, Adel , Pourbabaki, Reza , Samiei, Sajjad ,

Introduction: Nowadays, working in any computer work stations, named visual display terminal (VDT), was widespread and has become popular in our lives. Due to the increasing trend of using computers in the administrative and social institutions, prevalence of eye-related signs of working with computers is still increasing and it is one of the most important health issues. Computer jobs are low-...

زندی, بهمن, سرمدی, مجمد رضا, فرج اللهی, مهران, کشاورز, محسن,

Background and objective: The main purpose of this article was a review of students' computer literacy level who were studying through distance education at University of Tehran, Faculty of Management. Materials and Methods: This study was a descriptive-survey research in which 171 students were selected. Research instrument was a questionnaire of computer literacy based on standards of ICDL...

Journal: :educational research in medical sciences 0
behzad karami matin afartaj alikhani yahya safari amir hossein hashemian mitra abolfathi fatemeh heidarpour

dear editor computer is one of the fundamental tools in applying most electronically-based teaching methods. many studies on the students of university of medical sciences have been focused on their computer and internet skill levels. the skill levels in using computers and internet in isfahan university of medical sciences (iums) were estimated 14.87 and 12 (from 20), respectively (1) and this...

Objective: To review the current knowledge of CAD/CAM in dentistry and its development in the mentioned field. Sources: An electronic search was conducted across Ovid Medline, complemented by manual search across individual databases, such as Cochrane, Medline and ISI Web of Science databases and Google Scholar for literature analysis on the mentioned topic. The studies were reviewed thoroughly...

Until recently, computer security was an obscure discipline that seemed to have little relevance to everyday life. With the rapid growth of the Internet, e-commerce, and the widespread use of computers, computer security touches almost all aspects of daily life and all parts of society. Even those who do not use computers have information about them stored on computers. This paper reviews some ...

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