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1

Selection of Robot for Contour Crafting Using Analytical Hierarchy Process

Senthilraja S., Raja Muthaiah R.C.

Civil and Environmental Engineering Reports

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2023

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Vol. 33, no. 4

123--150

EN

The use of robotic equipment and a new technique called contour crafting allows for the construction of buildings at lower labor and material costs. The selection of the type of robot is an important factor that affects the overall performance of the contour crafting (CC) system. Various robot configurations, such as gantry, cylindrical, and SCARA, may be employed for contour crafting. There are benefits and drawbacks to using different types of robots for various tasks, including cost, work volume, material compatibility, and precision. Identifying a proper robot using the multi-criterion decision-making (MCDM) technique is crucial for successful building automation. This article uses the analytical hierarchy process (AHP) method to rank the best robots according to several characteristics. Cartesian robots, cylindrical robots, and SCARA robots were evaluated based on cost, accuracy, work volume, surface finish, type of profile, and speed. The results showed that the gantry-type robot is the most suitable option, while the cylindrical robot is unsuitable for building construction due to lower accuracy.

2

Modeling the designs in terms of logistics service center placement: a case study

Stopka Ondrej, Droździel Paweł, L'upták Vladimir

Archives of Transport

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2022

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Vol. 64, iss. 4

59--71

EN

Suggesting the proper location for logistics facility can be considered as a decision making problem, wherein the final solution/decision is affected by multiple external or even internal circumstances. In order to address the decision making issues, various multi-criteria decision making (MCDM) techniques may be implemented; and hence, they can be applied even when making a decision about an adequate logistics service center (LSC) placement in an examined territory (i.e., national logistics network of the selected territory), which is an aim of this manuscript. Following the statements above, as for the individual instruments of MCDM to be implemented in terms of the crucial objective of this research, the definite decision making process will be carried out by applying the Analytic Hierarchy Process (AHP) followed by the Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS), on the basis of criteria weights defined by the Saaty pairwise comparison method. The methods used appear to be ideal instruments towards decision making on the most suit-able location which is represented by the region in our case. Subsequently, these will be ordered from the most preferred to least one by using a preference ranking. As a result of the application of AHP and TOPSIS approaches, based on the conducted calculations in regard to decision making on identifying the proper LSC location out of eight selected regions, one specific region will be defined as the most suitable (so-called compromise) scenario. Individual tools allow for reducing the number of assigned criteria that are taken into account in searching process for individual solutions. In order to objectify the entire decision making procedure, ten topic-involved experts having practical experience with a subject of logistics object allocation will be asked to participate in the process. Preferences differ from one decision maker (expert) to another; hence, the outcome depends on who is making decisions and what their goals and preferences are.

3

Techniki wielokryterialnego podejmowania decyzji jako narzędzia wspierające etap przygotowania próbek do analizy

Bystrzanowska Marta, Tobiszewski Marek

Analityka : nauka i praktyka

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2022

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nr 4

50--54

PL

Zastosowanie technik MCDA może stanowić nieocenioną pomoc w poszukiwaniu rozwiązań optymalnych na każdym z etapów procedury analitycznej, a zwłaszcza na etapie przygotowania próbek do analizy, gdzie wariantowaniu może podlegać wybór technik, odczynników chemicznych, w tym rozpuszczalników, a także dobór optymalnych warunków prowadzenia procesów.

4

Developing and ranking the strategies of Zarand power plant using quantitative strategic planning matrix and best-worst method

Zangiabadi Leila, Moosavirad Seyed Hamed, Farahbakhsh Bahare, Mirhosseini Mitra

Acta Innovations

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2022

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no. 44

64--76

EN

Developing the power plants in any country is considered an economic development strategy as it changes the country’s market despite the competitive pressures. However, to grow the electricity market, policymakers need to evaluate the domestic Strengths, Weaknesses, Opportunities, and Threats (SWOT) of electric power plants. So, the necessity of a strategic plan for the power plants is inevitable to reach the goals such as eliminating the shortcomings, and meeting the desired criteria of an organization, such as more market share, acceptable profitability, customer satisfaction, increasing profit growth rate, and productivity through economic and cost-effective operations. Therefore, in this paper, the Zarand power plant in Iran is chosen as a case study to develop the associated strategies and rank them. A power plant strategic plan was generated by using a SWOT matrix. Then, the developed strategies were prioritized using a quantitative strategic planning matrix (QSPM) and the best-worst method (BWM). The results confirm that developing the main product (electricity power), managing water consumption, and providing equipment are the most critical strategies for the Zarand power plant. Findings also demonstrated that the results of the BWM method are more accurate and correct than the QSPM method for prioritizing strategies.

5

Evaluation of sustainable supplier problem: a hybrid decision making model based on SWARA-WASPAS

Erdogan Hande, Tosun Nedret

LogForum

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2021

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Vol. 17, no. 4

465--476

EN

Background: The fierce competitive advantage in the global market depends largely on the integration of all supply chain networks. This network facilitates the movement of information and materials through the suppliers and end customers with a focus on planning and managing. This integration can result in the meeting demands of customer orders being affected by the performance of the suppliers. As a result of this integration, it can be considered that the performance of the suppliers is important in fulfilling customer orders on time. Evaluating and selecting suppliers is greatly influencing the performance of the supply network. Methods: Selecting the proper supplier is a multi-criteria decision-making problem which includes both quantitative and qualitative criteria. A two-stage decision making method is proposed in the study under sustainability dimension. First, SWARA method is used to determine the relative importance of criteria and than WASPAS method is used to evaluate and rank the given alternatives. Results: A real-life case study is given for the selected approach. Also, sensitivity analysis is given. This selected alternative confirms the preferences of decision makers as it is a company that operates internationally and has a reputation and awareness in sustainability within its own country. Conclusions: Due to the increase in awareness on sustainability and the resulting regulations, the issue of sustainability in supply chains and sustainable supplier selection has become an important issue for companies. It is aimed to examine the supplier selection of a company in an electronics sector on a "sustainable" basis, considering from economic, environmental and social aspects. In this study, which was carried out to fill the literature gap identified in this field and to propose a systematic approach to sustainable supplier selection, a hybrid method which consists of both SWARA and WASPAS method have been used to evaluate the suppliers under the sustainability dimensions. With the help of a hybrid model, decision makers can manage conflict management of individual challenges using an analytical process.

6

Comparison of domestic logistics performances of Turkey and European Union countries in 2018 with an integrated model

Senir Gül

LogForum

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2021

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Vol. 17, no. 2

193--204

EN

Background: The Logistics Performance Index (LPI), created by the World Bank, is a benchmark tool used to determine the threats and opportunities faced by countries in their logistics performances and to improve their performances. Countries aim to increase their LPI scores and rank higher on the LPI list while developing their strategies. Methods: In this study, it was aimed to compare the domestic logistics performances of Turkey and the European Union countries with an integrated model using the domestic logistics performance index data for 2018, which was recently published by the World Bank. In this direction, firstly, the importance levels of the criteria were determined with the CRITIC (Criteria Importance Through Intercritera Correlation) method, and then, using the importance levels of the criteria, the countries were ranked according to the domestic logistics performance score with the COPRAS (Complex Proportional Assessment) method. Results: As a result of the CRITIC method, the most important criterion in the ranking according to the importance levels of the criteria was “without physical examination”, which is the sub-criterion of the customs clearance period, while the Netherlands was the country with the best performance in the ranking performed by the COPRAS method, using the importance levels of the criteria determined by the CRITIC method. Conclusions: The study differs from current studies in the literature in that it is the first study to perform a domestic logistic performance comparison using CRITIC and COPRAS methods with an integrated model. The results of the current study can be compared with the results obtained by using different integrated models and different data in the studies to be conducted.

PL

Wstęp: Wskaźnik Logistics Performance Index (LPI), utworzony prze Bank Światowy, służy do benchmarkingu w określaniu zagrożeń i możliwości dla krajów w ich działalności logistycznej oraz dla działań w celu poprawy tej działalności. Państwa dążą do poprawy wartości swojego wskaźnika LPI poprzez ciągła poprawę swojej strategii działania. Metody: Celem pracy jest porównanie wskaźników krajowej działalności logistycznej Turcji oraz krajów Unii Europejskiej ze zintegrowanym modelem w oparciu dane za 2018 rok, opublikowane niedawno przez Bank Światowy. W tym celu wpierw określono ważność poszczególnych kryteriów przy pomocy metody CRITIC (Criteria Importance Through Intercritera Correlation), a następnie utworzono ranking krajów dotyczących ich działalności logistycznej przy użyciu metody COPRAS (Complex Proportional Assessment). Wyniki: Używając metodę CRITIC, ustalono, że najważniejszym kryterium w ranking było kryterium „bez badania fizycznego”, które jest podkryterium w okresie odpraw celnych. Holandia umiejscowiła się na pierwszym miejscu rankingu stworzonego przy użyciu metody COPRAS. Wnioski: Prezentowana praca różni się od prac obecnie publikowanych użyciem metody porównawczej, wykorzystującej metody CRITIC oraz COPRAS w odniesienie do zintegrowanego modelu. Jednak otrzymane wyniku mogą być porównywane z wynikami uzyskanymi przy zastosowaniu innych modeli zintegrowanych oraz na podstawie innego zestawu danych.

7

Selection mining methods via multiple criteria decision analysis using TOPSIS and modification of the UBC method

Ali Mahrous A.M., Kim Jong-Gwan

Journal of Sustainable Mining

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2021

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Vol. 20, iss. 2

49--55

EN

Mine designers often face difficulties in selecting an appropriate mining method; however, such a method should be selected based on ore and rock characteristics. The selection of mining methods can be considered a type of multi-criteria decision making, and this depends on many factors used in the selection process. The general method used in this field is the University of British Columbia (UBC) method, which determines the criteria of the properties that are compared to determine the best and worst of several mining methods. In this paper we used as new technique which defines as Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). The criteria considered in the UBC method include general shape, ore thickness, ore plunge, and grade distribution, beside the rock quality designation (RQD), and the rock substance strength (RSS). This paper presents an improved TOPSIS method based on experimental design. Additionally, this paper will introduce a modified version of the UBC method that can be employed based on Excel sheet. The best mining methods is cut and fill stoping and top slicing with the same rank equal 0.72, and the second-best mining method is square set stoping with rank equal 0.65.

8

Using TOPSIS and AHP Methods in Job Distribution to Subcontractors in Apparel Companies and Comparing the Results

Bulur Öykü Ceren, Kayar Mahmut

Fibres & Textiles in Eastern Europe

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2021

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Vol. 29, no. 4 (148)

24--31

EN

The ready-to-wear sector is one of the areas where outsourcing is used extensively due to reasons such as being a labour-intensive sector, having a wide range of products, and the time pressure caused by the very short shelf life of the product. Therefore, garment companies work with a large number of subcontractors, which raises the problem as to which subcontractor/subcontractors work will be distributed to as well as how much to each subcontractor. Using multi-criteria decision-making methods in solving this complex problem helps decision-makers make the right decisions. From this point of view, multi-criteria decision-making methods are very important decision-making tools in terms of the optimal distribution of work to subcontractors. Within the scope of the study, the TOPSIS and AHP methods were used to distribute orders to subcontractors and compared.

PL

Sektor odzieżowy jest jednym z obszarów, w których szeroko stosowany jest outsourcing, głównie z takich powodów, jak: pracochłonność sektora, szeroka gama produktów oraz presja czasowa spowodowana bardzo krótkim okresem trwałości produktu. Dlatego firmy odzieżowe współpracują z dużą liczbą podwykonawców, co rodzi problem, do jakiego podwykonawcy/podwykonawców zostanie przydzielona praca, a także do jakiej kwoty zostanie przydzielona każdemu z podwykonawców. W podejmowaniu właściwych decyzji w kwestii tego złożonego problemu pomaga decydentom możliwość korzystania z wielokryterialnych metod podejmowania decyzji. Z tego punktu widzenia wielokryterialne metody podejmowania decyzji są bardzo ważnymi narzędziami decyzyjnymi z punktu widzenia optymalnego podziału pracy na podwykonawców. W ramach badania wykorzystano metody TOPSIS i AHP do dystrybucji zamówień do podwykonawców i porównano je.

9

Application of entropy weighting method for urban flood hazard mapping

Malekinezhad Hossein, Sepehri Mehdi, Pham Quoc Bao, Hosseini Seyed Zeynalabedin, Meshram Sarita Gajbhiye, Vojtek Matej, Vojteková Jana

Acta Geophysica

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2021

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Vol. 69, no. 3

841--854

EN

Flooding is one of the most frequently occurring natural hazards worldwide. Mapping and assessment of possible flood hazards are critical components of the evaluation and mitigation of flood risk. In this study, six flood-related indices, i.e., slope, elevation, distance to discharge channel, runof volume, street-drainage network intersection, index of the development and persistence of the drainage network (IDPR), were used to assess the flood hazard. The entropy weighting method was used for assigning the weights to flood-related indices and combining them to prepare urban food hazard mapping in Hamadan city. The produced map showed that nearly 20% of the study area (14.7 km2 ) corresponded to very high susceptibility to flooding, 19.4% (143 km2 ) to high susceptibility and 20.3%, 20.7% and 19.6% regard the moderate, low and very low susceptibility to flooding, respectively. Finally, two methods were used to evaluate the accuracy of the produced food susceptibility map. The frst method is related to assessing the behavior of the map by making and propagating error in foodrelated indices and used model (entropy weighting method), and the second method is superimposing method. The results showed that by making and propagation of error, the behavior of producing food susceptibility mapping, the produced map has a robust behavior either in ranking importance of flood-related indices and percentage of food susceptibility areas. On the other hand, regarding the result of the superimposing method, the accuracy of the flood susceptibility map was 72%, which also suggests an acceptable result.

10

Decision making when choosing an optimal personal bank account based on a multicriterial account evaluation model

Gawrońska Dorota

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2020

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z. 149

175--188

11

Time period based COPRAS-G method : application on the Logistics Performance Index

Mercangoz Burcu Adiguzel, Yildirim Bahadır F., Yildirim Sultan Kuzu

LogForum

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2020

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Vol. 16, no. 2

239--250

EN

Background: Logistics is vital for the trades of countries. The inputs such as raw materials and energy that is needed for production and also the outputs of these processes are transported and distributed effectively as a result of an efficient logistics process. In order to measure the logistics performance of countries, The World Bank (WB) is publishing an index entitled Logistics Performance for every two years. Methods: The main value of this study is to provide logistics performance scores of the selected countries for a selected time period. Thus, periodic evaluations can be done for a selected time period. The grey numbers are used for determining a new dataset for a time period and implement to Complex Proportional Assessment of Alternatives (COPRAS) method. 28 European Union (EU) member states plus 5 EU Candidate Countries are ranked by using the COPRAS-Grey (COPRAS-G) method according to their logistics performance scores. In order to see if the ranking calculated by COPRAS-G is representing the past index data, the bilateral comparisons of the rankings are investigated by using the Spearman Rank and Kendall’s Tau Correlation methods. Results: The results showed that the dataset obtained by using grey numbers represent the LPI scores of the countries for the selected time period. Although there are slight differences between the Spearman and Kendall correlation coefficients, the ultimate result is the same. The ranking calculated by COPRAS-G has the strongest relationship with all rankings published by WB. Conclusions: By using the grey numbers combined with the COPRAS-G method, the LPI of Countries can be evaluated for a time period.

PL

Wstęp: Logistyka jest istotną częścią handlu wielu krajów. Wkład w postaci surowców oraz energii jest niezbędny w procesie produkcji, wymaga on jednak najczęściej transportu, tak samo jak i wyroby finalne uzyskanie w procesie produkcji, zrealizowanego w efektywny sposób jako element całego procesu logistycznego. W celu pomiaru tego procesu w różnych krajach, Bank Światowy publikuje w okresach dwuletnich dane dotyczące aktywności logistycznych. Metody: Podstawowym celem tej pracy jest dostarczenie oceny działalności logistycznej wybranych krajów w wybranym okresie czasu. Liczby szare są stosowane do określenia danych dla danego okresu oraz zastosowania metody Complex Proportional Assessment of Alternatives (COPRAS). Stworzono ranking sprawności logistycznej obejmujący 28 państw członkowskich UE oraz 5 państw kandydujących do EU. W celu oszacowania poprawności danych wyliczonych przy pomocy metody COPRAS, wykonano podwójne porównanie otrzymanych rankingów przy użyciu metod Spearman Rank oraz korelacji Kendalla Tau. Wyniki: Uzyskane wyniki pokazują, że dane otrzymane poprzez użyciu liczb szarych reprezentują dane LPI badanych krajów w wybranym okresie. Występujące różnice, ujawnione w postaci współczynników korelacji Spearman i Kendall, nie są istotne. Ranking uzyskany w oparciu o metodę COPRAS-G wykazuje silną korelację ze wszystkimi rankingami publikowanymi przez Bank Światowy. Wnioski: Wskaźnik LPI dla wybranych krajów na założony okres został wyliczony poprzez zastosowanie liczb szarych w połączeniu z metodą COPRAS-G.

12

The assessment of the logistics performance index of CEE countries with the new combination of SV and MABAC methods

Isik Ozcan, Aydin Yuksel, Kosaroglu Serife Merve

LogForum

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2020

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Vol. 16, no. 4

549--559

EN

Background: The increase in global trade has caused logistics activities to be an important tool in providing strategic competitive advantage on a global scale. The logistics industry, which helps to facilitate the activities related to the movement of goods in the supply chain, is one of the fastest-growing sectors and has important effects on the economic performance of the countries. Measuring and evaluating the logistics performance of countries can enable them to reach their goals of achieving sustainable competitive advantage by revealing the strengths and weaknesses of logistics services in the entire supply chain. In this regard, the purpose of this study is to analyze and rank logistics performance in terms of selected 11 Central and Eastern European Countries (CEECs). Methods: In this study, the SV (Statistical Variance) and the MABAC (Multi-Attributive Border Approximation area Comparison) methods are used to form a decision-making model in evaluating the logistic performance. In logistics performance evaluation, the SV method is used to weight the selected performance criteria, whereas the MABAC method is employed to evaluate and rank the logistics performance of CEECs. Results: The results obtained from the SV method demonstrates that timeliness and infrastructure are the most and least significant performance criteria, respectively. According to the performance ranking of the countries by the MABAC method, the countries in the top three rankings are the Czech Republic, Poland and Hungary, respectively. Conclusions: The fact that the ranking of the proposed hybrid model is the same as the original logistics performance index (LPI) ranking of the selected countries suggests that the proposed model is consistent.

PL

Wstęp: Wzrost globalnego handlu jest przyczyną wzrostu ważności działalności logistycznej jako narzędzia służącego do uzyskiwania przewagi konkurencyjnej na globalną skalę. Branża logistyczna, która wspomaga wszelkie czynności związane z przepływem towarów w obrębie łańcucha dostaw, jest jednym z najszybciej rosnących sektorów i ma istotny wpływ na ekonomiczne wyniki krajów. Pomiar oraz ocena sprawności logistycznej krajów umożliwia im osiągnięcie postawionych celów w uzyskaniu zrównoważonej przewagi konkurencyjnej poprzez ujawnienie słabych i mocnych stron swoich usług logistycznych w obrębie całego łańcucha dostaw. Celem pracy jest analiza i stworzenie rankingu działalności logistycznej wybranych 11 krajów Europy Środkowo-Wschodniej. Metody: W pracy zastosowano metody SV (Statistical Variance) oraz MABAC (Multi-Attributive Border Approximation area Comparison) dla zbudowania modelu podejmowania decyzji odnośnie oceny działalności logistycznej. Dla oceny działalności logistycznej, metoda SV została zastosowana do wyznaczenia wagi poszczególnych kryteriów oceny, podczas gdy metoda MABAC została używana do oceny i tworzenia rankingu działalności logisty stycznej krajów Europy Środkowo-Wschodniej. Wyniki: Wyniki uzyskane przy użyciu metody SV pokazują, że terminowość oraz infrastruktura jest najważniejszymi kryteriami oceny działalności. Zgodnie ze stworzonym rankingiem przy pomocy metody MABAC, najwyżej ocenionymi krajami były: Czechy, Polska i Węgry. Wnioski: Ranking uzyskany za pomocą opracowanej metody jest taki sam jak przy użyciu oryginalnego współczynnika działalności logistycznej (LPI), co dowodzi poprawności wypracowanego modelu.

13

Recovery alternatives decision by using fuzzy based preference selection index method

Sari Emre Bilgin

LogForum

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2020

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Vol. 16, no. 1

171--181

EN

Background: The electrical and electronics sector has become one of the rapidly developing and growing sectors, as a result of technological and economic developments. Rapid changes in consumer demands and needs have increased the use of electrical and electronic equipment and shortened product life cycle, resulting in an increase in equipment waste. Therefore, recovery alternatives for electrical and electronic equipment waste should be considered subject. The aim of this study is to evaluate the recovery alternatives of electrical and electronic wastes and to determine the best. Methods: Multi-criteria decision-making techniques used to select the best among multiple alternatives have many application areas. The selection of recovery alternatives based on criteria includes some fuzzy topics. For this reason, the fuzzy logic approach was used to evaluate the answers of the decision makers and the fuzzy numbers obtained were analyzed by PSI method and criterion weights were determined and alternatives were listed. Results: According to results of analysis, social responsibility and environmental awareness criteria have the highest values for selecting recovery alternatives. In addition, remanufacturing, regeneration and recycling take the first place among the alternatives. Conclusions: Recovery of electrical and electronics waste is an important subject in current conditions. Alternative methods vary from reuse to incineration, but correct choice of recovery techniques rely on multi criteria and decision should be made adhering to them.

PL

Wstęp: Przemysł elektryczny i elektroniczny to gałęzie przemysłu o dużej dynamice wzrostu i rozwoju, będącej wynikiem rozwoju technologicznego i ekonomicznego. Gwałtowne zmiany popytu i potrzeb konsumentów wpłynęły na wzrost zapotrzebowania na sprzęt elektroniczny oraz skróciły cykl życia produktu, co w efekcie doprowadziło do zwiększenia ilości odpadów sprzętowych. Dlatego też istotnie jest zajęcia się tematyką odzyskiwania części ze zużytego sprzętu elektrycznego i elektronicznego. Celem pracy jest ocenienie metod odzyskiwania elementów ze zużytych sprzętów oraz wybór najlepszej z tych metod. Metody: W wielu obszarach stosuje się techniki wielokryterialne podejmowania decyzji w celu dokonania wyborów pomiędzy różnymi alternatywami. Wybór metody odzyskiwania w oparciu o kryteria obejmuje zagadnienia modeli rozmytych. Z tego też powodu, zastosowano logikę rozmytą do oceny odpowiedzi osób decyzyjnych a uzyskanie liczby rozmyte zostały poddane metodzie PSI, w wyniku której uzyskano kryteria ważone jak i listę alternatyw. Wyniki: Na podstawie uzyskanych wyników stwierdzono, że kryteria odpowiedzialności i świadomości ekologicznej mają najwyższą wartość przy selekcji metod odzyskiwania. Dodatkowo, najczęściej wybieranymi metodami były: przerób, regeneracja oraz recykling. Wnioski: W istniejących obecnie uwarunkowaniach, odzyskiwanie elementów ze zużytego sprzętu elektrycznego i elektronicznego jest bardzo ważne. Metody alternatywne obejmują całą paletę od ponownego użycia do spalenia, jednakże prawidłowy wybór stosowanej techniki odzysku powinien opierać się na wielokryterialnym procesie decyzyjnym.

14

Multicriteria Decision-Making in Complex Quality Evaluation of Ladies Dress Material

Misra Srabani, Salacova Jana, Militky Jiri

Autex Research Journal

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2020

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Vol. 20, no. 3

288--298

EN

Quality is the essence of any product for consumer satisfaction. However, different people have different perception of quality. Eventually the definition of quality varies from product to product and thus it is much more complex in textile clothing material evaluation. The end use application of a specific clothing material determines what should be the parameters of quality evaluation. Thus, the evaluation based on subjective assessment becomes unpredictable and unquantifiable. Quality for dress materials is not simply a physical parameter but something called as psycho-physical parameter. In recent times, many objective evaluation systems have been developed to evaluate the apparel grade textile materials with regard to their quality parameters. However, the evaluation does not involve enough statistical treatment of data so as to obtain a parametric weighted characterization of complex quality. The current work deals with parametric approach to complex quality evaluation based on multicriteria decision-making approach for ladies dress materials. The ladies dress materials are of numerous varieties and choices across the globe. The selection and marketing of these kinds of textile materials need to be given proper emphasis as it depends not only on physical parameters but also on climate, geography, ethnic group, market trend, age group, gender, and many such complex parameters, which are not quantifiable in absolute terms. In this study, woven fabrics used for ladies dress materials are collected from the market and they were evaluated for the consumer-oriented property parameters. A parametric approach is adopted to quantify the overall quality of these dress materials. Various objective techniques were used to evaluate the comfort and esthetic parameters. A complex quality index (CQI) was estimated with weighted combination of all the contributing parameters and total quality index was calculated. Selected consumers with different education level, age, and gender were interviewed to get a statistic of their opinion about quality parameters preferred by them. This complex quality index/degree of satisfaction shows very high correlation with subjective judgment. A CQI can be evaluated for each kind of clothing material looking into their applications.

15

Multiple-criteria decision-making for the choice of equipment in mining using the AHP method

Bodziony Przemysław, Patyk Michał, Kasztelewicz Zbigniew

New Trends in Production Engineering

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2019

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Vol. 2, Iss. 1

404--415

EN

Rational solution for mining equipment based on the use of haul trucks, excavators, wheel loaders and crunchers should result from thorough analysis of technical and economic issues – both cost-related and exploitational - which can have a crucial impact on the cost of minerals extraction. Moreover mining equipment should be selected with consideration for all vital parameters in specific exploitational conditions and even the exploiter’s preferences. This selection should consider hitherto disregarded criteria, such as mean availability and structure utilization of machinery systems with the aim to improve the same. Methodology presented in the paper illustrates practical application of MCDM and one particular method of this type – the Analytical Hierarchy Process (AHP) – for resolving the problem in specific exploitational conditions of mineral resource in surface mining AHP method covers a multi-criteria approach based on a compensation strategy to model preferences and assuming variant comparability. Taking into account the preferences of the evaluator, which determine the subjectivity of comparative evaluation, is the core of the multi-criteria approach, which treats such preferences Considering the above issues, the following paper is an attempt to develop new and universal criteria as well as a method of evaluation and selection of means of mining equipment for mineral resource surface mines.

16

A grey-based decision-making approach to the improvement of OHS management system

Tabor J.

Polish Journal of Management Studies

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2018

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Vol. 18, No. 1

389--402

EN

The objective of this paper is to present and verify the approach, using which it is possible to rank management system elements according to the decision-making criteria adopted by decision-makers, in order to reduce incoherence levels within the frameworks of the decision-making process concerning targeting of the system improvement measures. This approach makes use of the grey systems concept and properties of grey numbers. The following three cost-based parameters were used as assessment criteria of the particular elements of the system in terms of improvements: meeting requirements, performance costs, and performance time. This approach was verified in a furniture manufacturing company, based upon the work health and safety management system according to PN-N 18001, which was in place in this company. By using the proposed approach, it was possible to rank all the assessed elements of the system, and to identify those elements that could be improved in the first sequence, taking into account the adopted assessment criteria. This paper makes up for shortages in using the grey system theory to improve work health and safety management systems, and constitutes an original application of this concept in the area of work health and safety management systems. The approach presented herein may constitute a significant tool of improving not only health and safety management systems, but also other management systems as well.

PL

Celem artykułu jest przedstawienie i zweryfikowanie podejścia za pomocą, którego można uporządkować elementy systemu zarządzania według przyjętych przez decydentów kryteriów decyzyjnych, co pozwoli na zmniejszenie niespójności w ramach podejmowania decyzji o ukierunkowaniu działań doskonalących system. W podejściu wykorzystano koncepcję szarych systemów oraz właściwości szarych liczb. Jako kryteria oceny, poszczególnych elementów systemu pod kątem doskonalenia, wykorzystano trzy parametry o charakterze kosztowym: spełnienie wymagań, koszty realizacji oraz czas realizacji. Podejście zostało zweryfikowane w firmie z branży produkcji mebli, na bazie funkcjonującego w tym przedsiębiorstwie systemu zarządzania bhp wg PN-N 18001. Wykorzystanie zaproponowanego podejścia umożliwiło uszeregowanie wszystkich elementów ocenianego systemu oraz zidentyfikowanie tych, które można udoskonalić w pierwszej kolejności, uwzględniając przyjęte kryteria oceny. Niniejszy artykuł uzupełnia braki w zakresie wykorzystania teorii szarych systemów do doskonalenia systemów zarządzania bhp i stanowi oryginalne zastosowanie tej koncepcji w ramach zarządzania bezpieczeństwem i higieną pracy. Zaprezentowane podejście może stanowić istotne narzędzie w ramach doskonalenia systemów zarządzania, nie tylko dedykowanych bhp.

17

Multi criteria evaluation of wireless local area network designs

Olejnik R.

Studia Informatica

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2015

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Vol. 36, nr 2

35--42

EN

The paper presents proposal of multi criteria evaluation method of Wireless Local Area Network designs. It is based on a simple model of WLAN network along with its quality indices proposal. Next meta-criterion functions are presented. Finally simulation results run in MATLAB environment are presented.

PL

Artykuł przedstawia propozycję metody wielokryterialnej oceny projektów lokalnych sieci bezprzewodowych (WLAN). Bazuje ona na prostym modelu sieci WLAN wraz z propozycją jej wskaźników jakości. Następnie przedstawione są funkcje metakryterialne oraz wyniki badań symulacyjnych w środowisku MATLAB.

18

Decision support in air transportation using AHP/ANP tools

Kwasiborska A.

Logistyka

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2015

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nr 2

486--493, CD1

EN

The article presents the following multi criteria decision - making methods: Analytic Network Process (AHP) and Analytic Network Process (ANP). It is important to use them in an environment of air transport. The issue of air transport, especially the matter of airports' throughput, is still the topic of multistage and multi criteria discussions on multiple European commission levels. It is estimated that Europe will not be able to face up to the demand due to the limited airports' throughput. What will be meaningful here is the acquaintance with functional relations in an airport and better use of existing throughputs in crowded airports through the assurance of an effective system for take - off and landing time allocation. Thanks to the analysis of the existing system for take - off and landing time allocation functionality it is clear that this system does not allow for an optimal usage of the limited throughput in crowded airport's.

PL

W artykule przedstawiono wielokryterialne metody podejmowania decyzji, do których zaliczają się: Analityczny Proces Hierarchiczny (AHP) oraz Analityczny Proces Sieciowy (ANP). Ważne jest wykorzystanie ich w środowisku transportu lotniczego, będącego przedmiotem wielu analiz i badań. Zagadnienia dotyczące transportu lotniczego a w szczególności przepustowości portów lotniczych jest ciągle tematem wieloetapowych i wielokryterialnych rozważań na szczeblach wielu komisji europejskich. Szacuje się, że Europa nie będzie w stanie sprostać dużej części popytu ze względu na ograniczoną przepustowość portów lotniczych. Zasadnicze znaczenie będzie miało poznanie funkcjonalnych zależności w transporcie lotniczym oraz lepsze wykorzystanie istniejącej przepustowości w zatłoczonych portach lotniczych poprzez zapewnienie skuteczniejszego systemu przydziału czasu na start lub lądowanie. Z analizy funkcjonowania obecnego systemu przydziału czasu na start lub lądowanie wynika, że system ten nie pozwala optymalnie korzystać z ograniczonej przepustowości w zatłoczonych portach lotniczych.

19

Urban solid waste landfill selection by SDSS. Case study: Hamadan

Kahvand M., Gheitarani N., Khanian M., Ghadarjani R.

Environment Protection Engineering

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2015

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Vol. 41, nr 2

47--56

EN

One of the major problems human beings are confronted with in urban setting is the removal of urban waste. This problem has persuaded the urban authorities to use various tools such as Geographic Information System (GIS) to locate landfills. To do that, Sloan Digital Sky Survey (SDSS) has been used in which or multi-criteria decision making (MCDM) methods and GIS are combined. The selection of the burial place and landfill has great importance and different criteria must be considered. SDSS, using MCDM is able to investigate locating landfill using various criteria simultaneously and it determines its importance. This research aims at presenting suitable solution through using computer and GIS related to solid urban waste and their locating in Hamadan based on standard criteria. A comprehensive model based on GIS, to get the suitable burial place and landfill can help to save time and cost. The model of locating burial place of urban solid waste has been presented.

20

Maintenance strategy decision for avionics system based on cognitive uncertainty information processing

Tu J., Sun C., Zhang X., Pan H., Cheng R.

Eksploatacja i Niezawodność

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2015

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Vol. 17, no. 2

297--305

EN

Proper maintenance schedule is required to improve avionics systems reliability and safety. A decision approach to maintenance strategy remains a longstanding challenge in avionics system. With regard to fault diagnosis and equipment maintenance of avionics system, in which the equipment fault information are complex and uncertainty, a multi criteria of decision making method for avionics system based on cognitive uncertainty information processing is proposed to be used in the maintenance strategy decision. Firstly, vague set with three-parameters is introduced to make up for the shortage of the original vague set in expressing fuzzy information, a linguistic variables describing the qualitative indexes into three parameter vague of interval number is proposed. At the same time, due to risk psychological factors of maintenance policymakers that cause cognitive uncertainty are introduced into the maintenance decision process, and a prospect value function of three parameters vague interval value is defined based on prospect theory and the formula for measuring the distance between vague interval value, and a non-linear model of equipment maintenance policies can be established. The implementing process of maintenance policy decision for avionics system based on cognitive uncertainty information processing is given in this paper, and a ranking of the maintenance alternatives is determined. Finally, A specific example of decision of maintenance strategies in avionics system with the application of the proposed method is given, showing that the reliability centered maintenance strategy is the most suitable for avionics system.

PL

Doskonalenie niezawodności i bezpieczeństwa układów elektroniki lotniczej wymaga odpowiedniego harmonogramu działań obsługowych. Podejście decyzyjne do strategii utrzymania ruchu od dawna pozostaje wyzwaniem w systemach awioniki. W odniesieniu do diagnozy uszkodzeń i konserwacji urządzeń systemów elektroniki lotniczej, w których informacje o usterkach urządzeń są złożone i obarczone niepewnością, zaproponowano metodę wielokryterialnego podejmowania decyzji opartą na przetwarzaniu informacji związanych z niepewnością kognitywną, którą można stosować przy podejmowaniu decyzji dotyczących strategii utrzymania ruchu. Po pierwsze, wprowadzono nieostry zbiór trzech parametrów, które pozwalają na wyrażenie wartości liczbowej zaproponowanych zmiennych lingwistycznych opisujących wskaźniki jakościowe, jako wartości z przedziału nieostrego. Jednocześnie, do pojęcia procesu decyzyjnego dotyczącego utrzymania ruchu wprowadzono pojęcie ryzyka związanego z powodującymi niepewność poznawczą czynnikami psychologicznymi kierującymi osobami podejmującymi decyzje obsługowe. Zdefiniowano także funkcję oceny dla wartości z przedziału nieostrego trzech parametrów na podstawie teorii perspektywy i wzór do pomiaru odległości między wartościami z przedziału nieostrego, oraz ustalono nieliniowy tryb polityki konserwacji sprzętu. W artykule zaprezentowano proces implementacji decyzji w zakresie polityki konserwacji układów elektroniki lotniczej w oparciu o przetwarzanie informacji związanych z niepewnością kognitywną, stworzono też ranking dostępnych alternatyw w zakresie utrzymania ruchu. Na koniec, zaprezentowano konkretny przykład decyzji w zakresie strategii konserwacji układów elektroniki lotniczej z zastosowaniem proponowanej metody, pokazując, że strategia utrzymania ruchu oparta na niezawodności jest najbardziej odpowiednia dla układów awioniki.