Повышение ресурсоэффективности процесса приготовления высокооктановых бензинов методом математического моделирования

В работе рассмотрен способ повышения ресурсоэффективности процесса производства высокооктановых бензинов разработкой и применением прогностической математической модели изомеризации прямогонных бензиновых фракций. Проведена оценка внедрения технологии каталитической изомеризации С7 фракции в структуры действующих нефтеперерабатывающих предприятий.The method of increasing the resource efficiency of the process of production of high-octane gasoline by developing and using the predictive mathematical model of isomerization of straight-flow gasoline fractions is considered. The estimation of the introduction of the technology of catalytic isomerization of the C7 fraction into the structures of existing refineries is carried out

Steady success clusters in Differential Evolution

This paper presents insights into the proportions between the k-means clusters of successful Differential Evolution (DE), donor generating vectors. This is demonstrated by the high certainty that these proportions are similar - and thereby, that these cluster size proportions regularly appear. A characteristic of these proportions is that they are observed at the same specific values in different test functions. It is also shown that, when varying the number of dimensions for a fitness function, the proportions are constant. However, some of the possible dynamics of these proportions are reported later on, in the situation where the optimization algorithm is changed - for instance, control parameters like the population size parameter. This parameter significantly changes, the proportions of the most frequently successful and most unsuccessful vectors. Insights like this are useful for an understanding of the inter-generational complexity that appears within evolutionary algorithms and would thus benefit future algorithm design; for example, plausible metrics for on-line control. © 2016 IEEE.GACR Grant Agency of the Czech Republic [P103/15/06700S]; Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Programme [LO1303 (MSMT-7778/2014)]; RDF - CEBIA-Tech Project [CZ.1.05/2.1.00/03.0089]; teh Tomas Bata University Internal Grant Agency Project [IGA/CebiaTech/2016/007]; Slovenian Research Agency [P2-0041]; COST Action [15140