it seems that characteristics of utopias have been inscribed in the most ancient iranian myths on the one hand, and drawn in shanameh book by toos sage (ferdowsi) on the other hand. apparently, theme and pattern of utopia were included in var jam kard (a garden built by king jamshid) at first place that is the most ancient one of such towns and according to vandidad (chapter of avesta), it was ...

Studying the history of science could help develop an understanding of the contributions made by ancient nations towards scientific advances. Although Iranians had an important impact on the improvement of science, the history of Iranian medicine seems not to have been given enough attention by historians. The present study focused on the history of anesthesia and pain management in Iranian med...

For the solution of the SID (Symmetric InDefinite) linear systems, the use of the GLS (Generalized Least-Squares) polynomial preconditioner can improve the execution efficiency of solvers, particularly for some specially structured systems. In this paper the suitability of GLS preconditioning for a class of specially structured linear system of equations is demonstrated. The algorithms are impl...

The use of complex self tuning Proportional, Integral and Derivative (PID) controller, to drive the speed and direction in mini robot, is limited by calculus power and by the precision and noise of the on board input sensors, particularly severe problems arise in computing the derivative term. In this work a PID whose terms are computed from filtered input with a simple recursive Exponentially ...

We study the eigenvalue problem for a specially structured rank-k updated matrix, based on the Sherman–Morrison– Woodbury formula. 2006 Elsevier Inc. All rights reserved.