The removal of copper dissolved in liquid stags by pyrometalIurgical means such as gaseous reduction and sulfidization is thermodynamically investigated. The lowest level possible for copper content is theoretically determined and compared. The results show that gaseous reduction is not as effective as sulfidization. Slags with very low levels of dissolved copper can be obtained with sulfide tr...

In this paper we describe a technique for surface recovery of a rotating object illuminated under a collinear light source (where the light source lies on or near the optical axis). We show that the surface reeectance function can be directly estimated from the image sequence without any assumption on the reeectance property of the object surface. From the image sequence, the 3D locations of so...

The spectral power distribution (SPD) of the light reflected from a matte surface patch in a three-dimensional complex scene depends not only on the surface reflectance of the patch but also on the SPD of the light incident on the patch. When there are multiple light sources in the scene that differ in location, SPD, and spatial extent, the SPD of the incident light depends on the location and ...

We show a correspondence between a predicative characterization of quantum states, we have recently introduced, and bi-logic, a logical setting proposed by the Chilean psychoanalist I. Matte Blanco in order to describe the logic of the unconscious. The unconscious deals with “infinite” objects for which the “symmetric mode” is characterized, where negation and implication do not exist. In our m...

in this paper, the evidences and remnants of archaeometallurgical activities in elamite site of haft tappeh (14th century bc) have investigated and identification of archaeometallurgical materials have been done based on analytical investigations. sem-eds analysis and metallography were used to identify the chemical composition and microstructural features of archaeometallurgical materials in h...

The human visual system is able to accurately determine the color of objects irrespective of the spectral power distribution used to illuminate the scene. This ability to compute color constant descriptors is called color constancy. Many different algorithms have been proposed to solve the problem of color constancy. Usually, some assumptions have to be made in order to solve this problem. Algo...