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On the right approach to selecting a quality improvement project in manufacturing industries

100%
TEWARI P. C., MITTAL K., KHANDUJA D.
Operations Research and Decisions
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2017
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vol. 27
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issue 1
105-124
EN
Continuous improvement is the core of any successful firm. Talking about manufacturing industries, there is huge potential for continuous improvement to be made in various work areas. Such improvement can be made in any section of industry in any form such as quality improvement, waste minimization, system improvement, layout improvement, ergonomics, cost savings, etc. This case study considers an example of a manufacturing firm which wanted to start a quality improvement project (QIP) on its premises. Various products were available, but with dwindling quality levels. However, the real task was the choice of a product for upcoming QIP, as it is well known that success heavily depends upon the selection of a particular project. This is also because of the amount of effort in terms of time, money and manpower that is put into a project nowadays. The authors’ objective was to compare three techniques, namely, cost of poor quality (COPQ), conditional probability and fuzzy TOPSIS for selecting the right project based on this specific firm. The pros and cons of these approaches have also been discussed. This study should prove to be instructive for the realization of QIPs in similar types of industry.
2
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The fuzzy TOPSIS method and its implementation in the R programme

100%
Dudek A., Jefmański B.
Informatyka Ekonomiczna
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2015
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issue 1(35)
19-27
EN
The TOPSIS method (Technique for Order Preference by Similarity Ideal Solu-tion) suggested by Hwang and Yoon [1981], belongs to the group of pattern linear ordering methods of multidimensional objects. A characteristic feature of this method is a way to evaluate a synthetic criterion’s values, which takes into consideration the distance of an evaluated object from a positive-ideal solution as well as from a negative-ideal solution. The fuzzy TOPSIS method enables the linear ordering of objects described through linguistic variables, whose values are expressed in the form of triangular fuzzy numbers. In this arti-cle, a way of synthetic measurement estimation in environment R was presented, according to the assumptions of the fuzzy TOPSIS method proposed by Chen [2000]. Scripts, which are included in the article make the accomplishment of this particular method’s stages pos-sible.
3
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Porządkowanie liniowe obiektów z wykorzystaniem rozmytych metod AHP i TOPSIS

86%
Łuczak A., Wysocki F.
Przegląd Statystyczny
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2011
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vol. 58
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issue 1-2
3-23
EN
The aim of this paper was to investigate the applicability of the fuzzy multi-criteria linear ordering method to the construction of synthetic characteristics. Proposed approach base on two fuzzy methods: analytical hierarchy process (to calculate weight of characteristics and eliminated of unimportance characteristics) and method TOPSIS (to ranking of objects). The proposed procedure was employed to assess the socio-economic development of rural Wielkopolska seen as a collection of counties.
PL
Celem pracy było przedstawienie możliwości zastosowania rozmytej wielokryterialnej metody porządkowania liniowego do konstrukcji cechy syntetycznej. Metoda polega na wykorzystaniu dwóch komplementarnych rozmytych metod: analitycznego procesu hierarchicznego do ustalenia wag cech prostych oraz rozmytej metody TOPSIS przy rangowaniu obiektów. Zaproponowana procedura została zilustrowana przykładem dotyczącym oceny poziomu rozwoju społeczno-gospodarczego powiatów województwa wielkopolskiego.
4

Zastosowanie rozmytych metod porządkowania liniowego w ustalaniu hierarchii ważności cech usługi związanych z jakością

72%
Jefmański B.
Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie
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2013
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issue 909
29-37
PL
Zasadniczym celem artykułu jest charakterystyka i ocena możliwości aplikacyjnych wybranych rozmytych metod porządkowania liniowego w ustalaniu hierarchii ważności cech jakości usługi. Zaprezentowano wyniki badania, którego celem była ocena jakości strony internetowej Głównego Urzędu Statystycznego. Zastosowano narzędzie WebQual zmodyfikowane przez autora pod względem zarówno wyszczególnionych cech jakości usługi, jak i sposobu pomiaru opinii respondentów. Opracowany kwestionariusz ankiety umożliwia bowiem transformację wyników pomiaru w postaci wartości lingwistycznych do wartości liczbowych za pomocą zbiorów rozmytych. Tak przygotowane dane pierwotne stanowiły podstawę zastosowania rozmytych metod porządkowania liniowego.
EN
The principal aim of the article is to characterise and assess the application possibilities for selected fuzzy linear ordering methods in determining the hierarchy of the importance of service quality characteristics. The report presents the results of a study whose aim was to assess the quality of Poland’s Central Statistical Office’s website. A tool known as WebQual was used, after modification by the author for two areas: quality of listed service characteristics and how respondent opinions were measured. The survey questionnaire enables the transformation of the measurement results from linguistic values to numerical ones using fuzzy sets. The primary data prepared this way formed the basis for the application of fuzzy linear ordering methods.
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