awareness of the level of river flow and its fluctuations at different times is one of the significant factor to achieve sustainable development for water resource issues. therefore, the present study two hybrid models, wavelet- adaptive neural fuzzy interference system (wanfis) and wavelet- artificial neural network (wann) are used for flow prediction of gamasyab river (nahavand, hamedan, iran...

Indigenous entrepreneurship is an emerging field of study within the broader field of entrepreneurship. While it is acknowledged that indigenous entrepreneurial activity comes from a particular cultural context, what is not so well understood is how it emerges and how historical context and cultural heritage inform the activity (Peredo & Anderson et al 2006). This was addressed briefly within E...

Recently, Tuceryan and Navab introduced a method for calibrating an optical see-through system based on the alignment of a set of 2D markers on the display with a single point in the scene while not restricting the user’s head movements (the single point active alignment method or SPAAM in short) [33]. This method is applicable with any tracking system, provided that it gives the pose of the se...

The work presents a numerical methodology to simulate the dynamic behavior of reed type valves of reciprocating compressors used in refrigeration. A one-degree of freedom model is adopted for the reed motion and a finite volume method is employed to obtain the flow field through the valve. The valve dynamics and the time dependent flow field are coupled and solved simultaneously. As a first ste...

energy equation for turbulent flow in a rotating system was derived in terms of second order correlation tensors, where the correlation tensors were functions of space coordinates, distance between two points and time. to reveal the relationship of turbulent energy between two points, one point was taken as origin of the coordinate system. due to rotation, the coriolis force played an important...