A business incurs much higher charges when attempting to win new customers than to retain existing ones. As a result, much research has been invested into new ways of identifying those customers who have a high risk of churning. However, customer retention efforts have also been costing organizations large amounts of resources. Same is the situation in ISP industry in I.R.Iran. Exploiting the u...

deducing what a paper is about, titles are considered as the most important determinant of how many people will read the article. therefore, studying the use of different syntactic structures and their rhetorical functions in titles is of great significance. the current study was set to investigate these structures used in research article titles in three disciplines of applied linguistics, den...

the current paper aims to study pregnant women’s usage of cyber space as a muted group. this is a qualitative research which has been done using grounded theory method and interview technique. we interviewed a number of pregnant women who had visited some websites related to pregnancy issues, during fall and winter of 1394. the interviewees were 16 pregnant women and we met them in a hospital l...

The growing impact of Semantic Wikis deduces the importance of finding a strategy to store textual articles, semantic metadata and management data. Due to their different characteristics, each data type requires a specialized storing system, as inappropriate storing reduces performance, robustness, flexibility and scalability. Hence, it is important to identify a sophisticated strategy for stor...

software architecture is considered one of the most important indices of software engineering today. software architecture is a technical description of a system indicating its component structures and their relationships, and is the principles and rules governing designing. the success of the software depends on whether the system can satisfy the quality attributes. one of the most critical as...

earthquakes in urban areas leave behind a considerable amount of debris, which delays the relief services and the reconstruction activities. the relief work would be impossible without the removal of debris from the main access roads to the devastated areas. the proper implementation of this endeavor requires a long-term management of debris. this article discusses development of strategic mana...

Urban environments develop complex, non-obvious structures that are often hard to represent in the form of maps or guides. Finding the right place to go often requires intimate familiarity with the location in question and cannot easily be deduced by visitors. In this work, we exploit large-scale samples of usage information, in the form of mobile phone traces and geo-tagged Twitter messages in...

Appearance of new services in facility management is possible only due to efficient usage of informational potential present in modern buildings. Such services (knowledge-based services) use information that is already present among the general data. Efficient usage of this information requires a close connection between the building automation and building management. This connection is carrie...

Most studies on spam thus far have focused on its content or source. These types of studies, however, reveal little about the behavioral characteristics of spammers. In addition, privacy issues may prevent wide access to email content. In this paper, we try to identify spammers by investigating their resource usage patterns. Specifically, we look at usage patterns of harvesters, the bots that a...