Let $S$ be a dense subsemigroup of $(0,+infty)$. In this paper, we state   definition of thick near zero, and also  we will introduce a definition that is equivalent to the definition of piecewise syndetic near zero which presented by Hindman  and Leader in [6].  We define density near zero for subsets of $S$ by a collection of nonempty finite subsets of $S$ and we investigate the conditions un...

Purpose The paper introduces a new conceptualisation of entrepreneurship that promotes broader perspective the phenomenon. purpose is to re-conceptualise act so as reduce it fundamental behaviours and processes. Design/methodology/approach sets out motivations for challenges in establishing definition entrepreneurship. Following this, current approaches defining are reviewed. In light these, of...

In this paper we investigate the influence of the video format and of re-scaling on the perceived video quality in the context of IPTV. Addressed resolutions are typical of IPTV: Standard Definition (SD, 720 x 576 pixels) and High Definition (HD, 1920x1080 pixels). Re-scaling comprises SD to HD (4:3, 1350x1080) upscaling and cropping from HD 16:9 (1920x1080) to HD 4:3 (1350x1080) format. In par...

Globally the manufacturing industry is undergoing a shift in way product specifications are defined, used, and re-used from conventional drawing-based systems to comprehensive 3D digital model. This transformation at heart of digitization processes. The true benefits lie adoption this technology throughout lifecycle. However, partial many stages lifecycle still heavily reliant on traditional dr...

The following is a discussion on the different aspects of the term capacity as well as a brief look at the commonly used capacity definitions in industrial and operations engineering in general and in Civil Aviation in particular. We maintain that quality factors (including more specifically here, safety) must be explicitly considered in runway capacity definition, and accordingly, we provide a...

in this study, as for the re-casting, surface alloying and re-solidification layer of this alloys at the work piece level machining with wire electro discharge machining (wedm), changes of surface micro hardness with changes of operational parameters has been studied. therefore, study shows using surface alloying phenomena with the diffusion of wire material into the machined surface and select...