common yew (taxus baccata) is one of the native and extinguishing speices at northern forests of iran that is very important as a genetic reserve and, therefore, more studies are necessary for preservation and restoration of this rare forest speices. for having high value and complete preservation of gene structure, vegetative propagation is one of the suitable in use methods in this field. thi...

The Persian Gulf is part of an asymmetric foreland basin related to the Zagros Orogen. It has been episodically flooded for much of its history which are reflected in sedimentary successions. The evaluation of this succession from depositional trend view, in central Persian Gulf during Paleocene-Eocene, is the aim of this article. The sedimentary rocks physical characteristics effects on seismi...

4 The semidefinite programming SDP relaxation has proven to be extremely strong for many hard 5 discrete optimization problems. This is in particular true for the quadratic assignment problem QAP, 6 arguably one of the hardest NP-hard discrete optimization problems. There are several difficulties that 7 arise in efficiently solving the SDP relaxation, e.g., increased dimension; inefficiency of ...

In this paper we propose a novel algorithm for 3D shape searching based on the visual similarity by cutting the object into sections. This method rectifies some of the shortcomings of the visual similarity based methods, so that it can better account for concave areas of an object and parts of the object not visible because of occlusion. As the first step, silhouettes of the 3D object are gener...

With the objective of minimizing the total execution time of a parallel program on a distributed memory parallel computer, this paper discusses the selection of an optimal supernode shape of a supernode transformation (also known as tiling). We assume that the communication cost is dominated by the startup penalty and therefore, can be approximated by a constant. We identify three parameters of...

. Abstract—The demand for high quality focuses attention on the surface condition of the product, especially the roughness of the machined surface, because of its effect on product appearance, function, and reliability. Surface quality is one of the specified customer requirements for machined parts. There are many parameters that have an effect on surface roughness such as cutting speed, feed ...