Showing papers by "Iran University of Science and Technology published in 1989"
TL;DR: In this article, the determination of an unknown radiation term in the non-linear boundary condition of a linear diffusion equation from an overspecified condition was studied and it was shown that the solutions of this inverse problem is unique and stable.
11 citations
TL;DR: An algorithm is developed for the selection of a cycle basis of a graph which corresponds to a highly sparse cycle adjacency matrix, hence providing an efficient means for the mesh analysis of networks.
Abstract: An algorithm is developed for the selection of a cycle basis of a graph which corresponds to a highly sparse cycle adjacency matrix, hence providing an efficient means for the mesh analysis of networks. Unlike the existing methods, this algorithm reduces the overlaps of the cycles instead of their lengths. The results are compared with those of the previous methods through some examples. The cycles are also ordered to obtain banded cycle adjacency matrices.
7 citations
Journal Article•
TL;DR: In this paper, the compressive strength of aluminum casting cores with different additive materials was examined and it was found that 5% sand size bauxite has the best effect on both gas strength and de-coring.
Abstract: This paper examines the compressive strength of sodium silicate bonded cores for aluminum casting with different additives. Various materials are used as additives among which it is found that 5% sand size bauxite has the best effect on both gas strength and de-coring 98.5% silica content sand with 70-90 AFS No. with 4% sodium silicate is used. The results indicate that although very good collapsibility is achieved by 2% wood flour, its low gas-strength leads the casting towards various defects.
5 citations