leadership studies is a new interdisciplinary field of organization studies that is growing at a steady rate all over the world. leadership studies are seen as a branch of management and organization sciences despite its philosophical roots that can be traced back to plato’s philosophical writings such as laws, politics, or the republic. starting from burns’ seminal book, leadership (1978), and...

the clinical environment remains a key area for learning, and practitioners continue to make a huge contribution to the education of students. varieties of theories of learning are available for trainers to use in medical education, it is very important to identify the principles of learning and understand how individual differences affect the learning process. it is interesting to think about ...

theory is a base for all scientific disciplines. theorizing is an important branch in architecture too. there are a little reference that tries to define theory and show the differences between theory in architecture and theory in other disciplines. this article aimed to show the characteristics of architectural theory. at first we try to review different books and articles which are written on...

the aim of this empirical study is to explore the trade-off model and pecking order model of capital structure. the investigation is performed using panel data procedures for a sample of 76 firms listed in tehran stock exchange during 2007-2010.the study employs ols regression model in examining the capital structure of firms in iran. the study employs variables reflecting differing theoretical...

purpose: to determine the prevalence of intraocular injuries in patients with blow-out fracture and also to evaluate the etiologic mechanism of orbital blow-out fractures methods: this study is a consecutive case series analysis of 116 patients with orbital blow-out fractures. the patients were visited by an ophthalmologist within 24 hours of trauma. results: ninety-one men and twenty-five wome...

following the categorical approach to universal algebra through algebraic theories, proposed by f.~w.~lawvere in his phd thesis, this paper aims at introducing a similar setting for general topology. the cornerstone of the new framework is the notion of emph{categorically-algebraic} (emph{catalg}) emph{topological theory}, whose models induce a category of topological structures. we introduce t...