e-mail has become an important means of electronic communication but the viability of its usage is marred by Unsolicited Bulk e-mail (UBE) messages. UBE consists of many types like pornographic, virus infected and 'cry-for-help' messages as well as fake and fraudulent offers for jobs, winnings and medicines. UBE poses technical and socio-economic challenges to usage of e-mails. To meet this cha...

Machine translation engines draw on various types of databases. This paper is concerned with Arabic as a source or target language, and focuses on lexical databases. The non-concatenative nature of Arabic morphology, the complex structure of Arabic word-forms, and the general use of vowel-free writing present a real challenge to NLP developers. We show here how and why a stem-grounded lexical d...

with regard to the impossibility of preparing learners for each situation that they might encounter in their life, it is more logical to teach them how to cope with unexpected challenges. helping learners ‘learn how to help themselves’ can be facilitated by means of tasks and activities in the classroom context. this paper presents some of the find- ings of a study on iranian young learners bet...

this study aims at uncovering the effect(s) of genre-based instruction (gbi) on listening proficiency among iranian efl learners. moreover, it seeks to explore the relationship between effectiveness of gbi and listening proficiency. for this purpose, 68 efl learners in two different groups at zabol university were selected. group a included 30 participants (12 males and 18 females), and group b...

In a prospective analytical cohort study or a study involving a longer follow up, changing age of participants influence the relationship between exposure and outcome. Usually age at entry is incorporated in the regression model to adjust for age. However, this fails to fully explain and adjust for changing age. For this Lexis expansion, a concept by Wilhelm Lexis, allows the analyst to expand ...

background :comparing computer and internet based instruction with traditional giving lecture would provide enough evidence to identify best teaching practice. in this study, we compared lecture, interactive internet based and computer based learning regarding medical students' knowledge acquisition and satisfaction in teaching pathophysiology of hematology and oncology.   methods : eighty four...

This paper focuses on the impact of an asynchronous online discussion forum on the development of students’ ability in and attitudes toward writing in English. To do this, 60 undergraduate students majoring in English were assigned to two experimental and control groups while receiving different types of feedback. Students in the experimental group were required to take part in an asynchronous ...