Wyniki wyszukiwania - BazTech

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Application of goal programming in the textile apparel industry to resolve production planning problems : a meta-goal programming technique using weights

Malik Zahid Amin, Kumar Rakesh, Pathak Govind, Roy Haridas

Operations Research and Decisions

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2022

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Vol. 32, No. 2

74--88

EN

In the present business environment, rapidly developing technology and the competitive world market pose challenges to the available assets of industries. Hence, industries need to allocate and use available assets at the optimum level. Thus, industrialists must create a good decision plan to guide their performance in the production sector. As a result, the present study applies the Meta-Goal Programming technique to attain several objectives simultaneously in the textile production sector. The importance of this study lies in pursuing different objectives simultaneously, which has been almost ignored till now. The production scheduling problem in a textile firm is used to illustrate the practicability and mathematical validity of the suggested approach. Analysis of the results obtained demonstrates that the solution met all three meta-goals with some original goals being met partially. An analysis of the sensitivity of the approach to the weights of the preferences was conducted.

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Wybór materiału zmiennofazowego PCM do wspomagania pracy instalacji chłodniczej

Kapica Paulina, Karwacki Jarosław

Chłodnictwo i Klimatyzacja

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2019

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nr 4

60, 62--65

PL

W instalacjach chłodniczych z reguły urządzenia są dobierane w taki sposób, aby można było zapewnić moc chłodniczą w okresach szczytowego obciążenia. To pozwala dostarczyć odpowiednią ilość chłodu w momencie największego zapotrzebowania na nie, jednak wiąże sią z dużym kosztem inwestycyjnym i eksploatacyjnym. Dlatego jednym z aktualnych trendów, prowadzących do obniżenia kosztów i oszczędności energii, jest wybór urządzenia chłodniczego, które zapewnia jedynie część wydajności szczytowej oraz zastosowanie magazynu energii z materiałem zmiennofazowym, mającego za zadanie dopełnienie mocy chłodniczej w okresie największego zapotrzebowania.

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Анализ процессa территориального планирования в Литвe, Польшe и Германии

Komarovska A., Peckienė A., Rasiulis R., Cepurnaite J.

Ekonomia i Zarządzanie

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2015

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Vol. 7, no. 1

407--431

RU

В работе проведен систематический анализ процесса территориального планирования в Литве, Польше и Германии. В результате анализа были определены доминирующие проблемы в секторе территориального планирования. Планы развития района не гарантируют устойчивого развития, экономического роста, обеспечения занятости, привлечения инвестиций, уменьшения инвестиционного риска. Поэтому необходимо разработать комплексную систему территориального планирования, которая может обеспечить всесторонний и объективный анализ развития и изменений территории, сбор информации, ее накопление и хранение. Было установлено, что задача сравнения моделей систем территориального планирования приравнивается к классу задач неструктурированных проблем с качественными переменными. Поэтому при решении таких проблем может быть применен вербальный метод принятия решений, такой как UniComBOS.

EN

The paper conducted a systematic analysis of the spatial planning process in Lithuania, Poland and Germany. By analysis of spatial planning sector, the dominant root of the problem. Drawing up plans do not ensure balanced regional development, economic growth, job security, attracting investment, increase investment risk. It is therefore necessary to develop an integrated spatial planning document preparation and implementation of a system that can ensure the development of the territory and changes in a comprehensive and objective analysis of the information collection and storage. It was found that spatial planning system models for comparison task assigned to unstructured problems with qualitative variables class of problems. It is therefore suitable for solving these problems verbal decision-making methods, such as UniComBOS.

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Multi-objective decision making and search space for the evaluation of production process scheduling

Witkowski T., Antczak P., Antczak A.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2009

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Vol. 57, nr 3

195-208

EN

Over the years, various approaches have been proposed in order to solve the multi-objective job-shop scheduling problem -particularly a hard combinatorial optimization problem. The paper presents an evaluation of job shop scheduling problem under multiple objectives (mean flow time, max lateness, mean tardiness, mean weighted tardiness, mean earliness, mean weighted earliness, number of tardy tasks). The formulation of the scheduling problem has been presented as well as the evaluation schedules for various optimality criteria. The paper describes the basic mataheuristics used for optimization schedules and the approaches that use domination method, fuzzy method, and analytic hierarchy process (AHP) for comparing schedules in accordance with multiple objectives. The effectiveness of the algorithms has been tested on several examples and the results have been shown. New search space for evaluation and generation of schedules has been created. The three-dimensional space can be used for the analysis and control of the production processes.