Abstract:  In this study, the change in the crystalline structure of gas hydrate was predicted for ternary mixture of methane-ethane-water. For this purpose, the tangent plane distance (TPD) minimization method was used. First, the calculations were performed for the binary mixtures of methane-water and ethane-water as the gas and liquid phases. The results show that for a binary mixture of th...

One of the most powerful tools for solving optimization problems is algorithms (inspired by nature) based on populations. These provide a solution to problem randomly searching in search space. The design’s central idea derived from various natural phenomena, behavior and living conditions organisms, laws physics, etc. A new population-based algorithm called Binary Spring Search Algorithm (BSSA...

By summarizing Khachiyan's algorithm and Karmarkar's algorithm forlinear program (LP) a unified methodology for the design of polynomial-time algorithms for LP is presented in this paper. A key concept is the so-called extended binary search (EBS) algorithm introduced by the author. It is used as a unified model to analyze the complexities of the existing modem LP algorithms and possibly, help ...

A binary model of the immune system is used to study the eeects of evolution on the genetic encoding for antibody molecules. One feature of this encoding is that, unlike typical genetic algorithm experiments, not all genes found in the genotype are expressed in the phenotype. We report experiments which show that the evolution of immune system genes, simulated by the genetic algorithm, can indu...

This paper presents a novel computer supported design system which uses computational approach to producing 3D images for stimulating creativity of designers. It put forward generic algorithm based on a binary tree to generate 3D images. This approach is illustrated by an artwork design example, which uses general complex function expressions to form 3D images of artistic flowers. It shows that...

In the Single Source Capacitated Location Problem (SSCLP) a set I = {1, .., n} of possible plant locations, each with a maximum capacity ai, i ∈ I, and a set J = {1, ..,m} of customers, each with a demand bj , j ∈ J , are given. It is required to choose a subset of plants and to fully assign each customer to one of the chosen plants, in such a way that the total cost is minimized, and the plant...

Dilution is one of the various existing methods in reducing heavy crude oil viscosity. In this method, heavy crude oil is mixed with a solvent or lighter oil in order to achieve a certain viscosity. Thus, precise mixing rules are needed to estimate the viscosity of blend. In this work, new empirical models are developed for the calculation of the kinematic viscosity of crude oil and diluent ble...

reversible logic circuits have found emerging attentions in nanotechnology,optical computing, quantum computing and low power design. a programmablelogic array (pla) is a universal circuit which is used to implement combinationallogic circuits. the main part of a pla is its and array. in this study we propose twotypes of optimized reversible programmable logic array (rpla) circuits. the firstty...

the speech enhancement techniques are often employed to improve the quality and intelligibility of the noisy speech signals. this paper discusses a novel technique for speech enhancement which is based on singular value decomposition. this implementation utilizes a genetic algorithm based optimization method for reducing the effects of environmental noises from the singular vectors as well as t...