This new method which is worked out in Isfahan University of Technology, makes it possible to analyze the phases quantitatively in minerals and powdered materials by X Ray Diffraction and without any reference material. To identify n unknown phases, n different combinations of phases, from fine and coarse fractions, or etc., must be obtained. Amorphous phases should not exist. Intensity ratios ...

The implementation of the ecosystem approach has increased the use of acoustics during surveys of pelagic organisms. How can data from acoustic sensors be exploited to describe the structure and distributions of aquatic organisms in a new area? A Census of Marine Life survey on the mid-Atlantic ridge during summer 2004 was used as an opportunity to develop a practical approach. The Norwegian ve...

With a brief review of the studies on the industry in Data Envelopment Analysis (DEA) framework, the present paper proposes inner and outer technologies when only some basic information is available about the technology. Furthermore, applying Linear Programming techniques, it also determines lower and upper bounds for directional distance function (DDF) measure, overall and allocative efficienc...

the iranian civil code has limited the effects of unknown condition to nullification of such condition provided that it results in ignorance with respect to consideration. the code conveys no explicit provision concerning the effect of such condition not resulting in the ignorance. unknown condition refers to a condition on which there is not complete and comprehensive knowledge. this article l...

Power system stabilizers have been widely used and successfully implemented for the improvement of power system damping. However, a fixed parameter power system stabilizer tends to be sensitive to variations in generator dynamics so that, for operating conditions away from those used for design, the effectiveness of the stabilizer can be greatly impaired. With the advent of microprocessor techn...