Showing papers by "Iran University of Science and Technology published in 1992"
TL;DR: In this article, the authors show that the simplifying assumption of cyclohexane as an unhindered rotator is not valid and that complex spatial correlations exist in all phases.
Abstract: Neutron diffraction measurements have been made for cyclohexane, C 6 D 12 as a function of temperature for bulk samples and also in porous silica with characteristic pore dimensions of ≈90A. The results show that the simplifying assumption of cyclohexane as an unhindered rotator are not valid and that complex spatial correlations exist in all phases. The nucleation of the plastic crystal phase is displaced to low temperature for the confined material and the diffraction pattern of the plastic crystal phase is found to depend on thermal history as well as temperature. The results may be interpreted in terms of defect properties which influence the orientational correlations between neighbouring molecules.
9 citations
TL;DR: In this article, the authors present a sufficient condition of optimality in the production scheduling of a single item with deterministic time-varying demand, setup and variable costs, in the backlog and no backlog cases.
5 citations
01 Aug 1992
TL;DR: In this article, the lumped element capacitances of some discontinuities in grounded coplanar waveguide (GCPW) were calculated for open-end and gap in center conductor of GCPW.
Abstract: The method of moment has been used for solving many electromagnetic problems, including computation of microstrip discontinuities[1]. In this paper, as far as we know, for the first time, this method is used to calculate the lumped element capacitances of some discontinuities in grounded coplanar waveguide (GCPW). Discontinuities considered here are: 1) open-end and 2) gap in center conductor of GCPW. The effects of the substrate thickness, dielectric constant and the physical dimensions arc investigated.
1 citations
TL;DR: In this paper, the unknown radiation terms in inverse problems of heat equations with overspecified data measured on the boundary are identified, and the purpose of this paper is to identify the unknown terms in some inverse problems.
1 citations
TL;DR: In this article, a finite difference technique for variable rectilinear meshes is developed for numerical solutions of harmonic, bi-harmonic, and multiharmonic boundary value problems, where a successive operator scheme is used to formulate a biharmonic equation from a harmonic one.