Article history: Received 27 November 2012 Received in revised form 4 September 2013 Accepted 20 December 2013 Communicated by B.P.F. Jacobs

according to various pollution sources, have adverse effects on the health of ecosystems in a region, it is important to estimate the amount of contamination in the area. in this study, concentrations of ni, cd and pb in the soft tissues of the bivalve saccostrea cucullata were examined at 4 ages categories and 3 longth categories in beaches loft port by icp-oes. the results showed that the mea...

langacker provided new schema-based descriptions of linguistic categories when he was questioning traditional theories of categorization. langecker's model of grammar deals with the reflection of grammatical subsystems of concepts related to space and time in language. also he explains how phenomena such as attention and point of view are encoded in language. the present research aimed to ...

Higher education institutions (HEIs) are crucial to the development of the European Research Area. However, unlike in the USA, the availability of quantitative indicators for individual HEI at the European level is severely limited by several methodological issues, data availability problems and national institutional constraints. The paper discusses strategies for collecting and validating dat...

these are notes from introductory survey lectures given at the institute for studies in theoretical physics and mathematics (ipm), teheran, in 2008 and 2010. we present the definition and the fundamental properties of fomin-zelevinsky’s cluster algebras. then, we introduce quiver representations and show how they can be used to construct cluster variables, which are the canonical generators of ...

Abstract Classifications of higher education institutions into categories that are more or less clearly differentiated through prestige and status legion in the world education. The notion parallel with comparable statuses, such as those different types universities, is however much well understood. This paper investigates how universities navigate between alternative categories. We examine bou...