Tag Archives: multi-criteria analysis

155–161 T. Holota, M. Holienčinová, M. Kotus and J. Chrastina
The use of TOPSIS method in the manufacturing process of clutch plate of agricultural machinery
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The use of TOPSIS method in the manufacturing process of clutch plate of agricultural machinery

T. Holota¹*, M. Holienčinová², M. Kotus³ and J. Chrastina¹

¹Slovak University of Agriculture in Nitra, Faculty of Engineering, Department of building equipment and technology safety, Tr. A. Hlinku 2, SK 949 76 Nitra, Slovakia
²Slovak University of Agriculture in Nitra, Faculty of Economics and Management, Department of Marketing and Trade, Tr. A. Hlinku 2, SK 949 76 Nitra, Slovakia
³Slovak University of Agriculture in Nitra, Faculty of Engineering, Department of Quality and Engineering Technologies, Tr. A. Hlinku 2, SK 949 76 Nitra, Slovakia
*Correspondence: tomas.holota@gmail.com

Abstract:

Rating and determination of factors of importance affecting the pressing process of clutch plates is, in most organizations, an individual and subjective decision of individual employees.
The paper describes the process of relevant material selection for the organization. This process is designed with the aim to use the exact methods in order to replace subjective material selection by objective process. The most appropriate method appears the multi-criteria statistical analysis TOPSIS.
TOPSIS method has been widely applied in many areas with good results as the choice of marketing strategy, optimization of mechatronic systems, safety management, business competitions, management of crisis situations, assessment of trends, planning and many others. This is the first time when TOPSIS method was used in the selection of the most important causes affecting the pressing process of clutch plates.
The aim of this paper is to carry out the multi-criteria statistical analysis TOPSIS which evaluates and determines the order of importance of various factors affecting the pressing process of clutch plate which is a component part of agricultural machinery. On the basis of performed method we can prevent from subjective evaluation and make rational decisions based on the statistical analysis.

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1169–1179 V. Malijonytė,, E. Dace, F. Romagnoli and M. Gedrovics
Methodology for determining the mixing ratio of selected solid recovered fuels
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Methodology for determining the mixing ratio of selected solid recovered fuels

V. Malijonytė¹,², E. Dace¹*, F. Romagnoli¹ and M. Gedrovics¹

¹Riga Technical University, Institute of Energy Systems and Environment, Azenes 12/1, LV-1048 Riga, Latvia
²Kaunas University of Technology, Institute of Environmental Engineering, Donelaičio g.20, LT-44239 Kaunas, Lithuania
*Correspondence: elina.dace@rtu.lv

Abstract:

Energy recovery is a preferable waste management method for waste that cannot be reused or recycled. For energy recovery, various types of waste with differing properties are being used, e.g. mixed municipal solid waste or end-of-life tires. To achieve a more stable and homogeneous characteristics of the waste derived fuels (RDF, SRF), they can be mixed in a number of ratios. The paper presents a methodology for determining the optimal mixing ratio of three selected waste derived fuels (mixed municipal solid waste, sewage sludge, end-of-life tires) considering environmental and economic aspects. The developed method is based on combining life cycle assessment method, mass balance calculations and multi-criteria analysis (the technique for order of preference by similarity to ideal solution – TOPSIS). The results show that mixing the various waste derived fuels allows obtaining a more sustainable solution than in the case of each separate waste derived fuel.

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