in iranian language learning contexts, writing in english is an important challenge for learners, since it is usually treated as a secondary skill and is led to the periphery of language classes, due to its time-consuming nature. computer technology and namely the free online environments available in the world wide web (www) offer possibilities for moving beyond such confinements. asynchronous...

certain advantages of service-oriented architecture have led to the spread of this type of architecture around the world. however, some special features of this type of architecture have led to more compromise between the security in the information system and other information systems. the purpose of this paper is to identify and examine the impact of factors and dimensions of the information ...

background: the purpose of this study was to examine whether the frequency of breakfast eating was related with overweight/obesity in korean adolescents. method: we analyzed the data collected in the 5 th kyrbws, in which 72,399 adolescents participated in 2009. we assessed the association between frequency of breakfast eating and body mass index by using multivariate logistic regression analys...

background: this study investigates whether the amount of time that korean adolescents spend on the internet per day is related to their weight status. methods: for this purpose, we analyzed data from the 2009 korea youth risk behavior web-based survey-v (kyrbws-v), in which 72,399 students from the 7 th to the 12 th grade participated. we assessed the relationship between the amount of time sp...

background : lifestyle is recognized as a key factor as the cause and management of the metabolic syndrome. the aim of this study was to identify individuals at increased cardiovascular diseases risk and determine main features of lifestyle of participants with metabolic syndrome via internet. methods : the study was conducted from jun 22 to august 22, 2012 in tehran, iran. recruitment was carr...