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1

Reliability analysis of subway sliding plug doors based on improved FMECA and Weibull distribution

Wang Weibo, Liu Wenxiu, Fang Yu, Zheng Yongkang, Lin Chuan, Jiang Yonghua, Liu Dong

Eksploatacja i Niezawodność

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2024

|

Vol. 26, no. 2

art. no. 178275

EN

Using traditional failure mode effects and criticality analysis (FMECA) to analyze the hazard of subway sliding plug door system, there are problems such as easy-to-take repetitive values, irrational allocation of expert's weights, and failure to consider the weights of evaluation factors. To address the above problems, this paper proposes an improved FMECA by using linear interpolation to increase the differentiation of the same fault probability occurrence among various fault modes. Apply the dependent uncertain ordered weighted averaging (DUOWA) algorithm to assign weights to different experts dynamically. The analytic hierarchy process (AHP) is used to endow weights to diverse evaluation factors to make them more suitable for engineering needs. We collected 1,836 days of metro train operation records from the Shanghai subway manufacturing plant and studied 17 common faults. Next, use a reliability-centered maintenance (RCM) strategy to determine maintenance periods for different fault modes. Finally, through the Weibull distribution fitting test, the fault rate function of the door is obtained, and the remaining useful life (RUL) of the door is predicted. The consistency between the vulnerable parts obtained by our proposed method and the statistics of the maintenance records of the subway sliding plug door verifies the effectiveness and reliability of our improved FMECA.

2

Assessment of safety of masonry buildings near deep excavations: impact of excavations on structures

Jasiński Radosław, Skrzypczak Izabela, Leśniak Agnieszka, Natividade Eduardo

Bulletin of the Polish Academy of Sciences. Technical Sciences

|

2024

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Vol. 72, nr 4

art. no. e149817

EN

The knowledge of the impact and the load-bearing capacity of unstrengthened/strengthened structures is a crucial source of information about the safety of masonry buildings near deep excavations, especially in dense urban areas. Incorrect calculations made for such designs can seriously affect not only an analyzed object but also the adjacent buildings. The safety of masonry buildings can be determined by many factors that are closely related to the hazards presented during the performance of deep excavations. These factors are at first identified and then prioritized. The AHP process in the multi-criteria analysis was used to support the decision-making process related to the verification of factors affecting the safety assessment of masonry buildings in the area of deep excavations. The proper design of building structures, including the verification of the structure strengthening near deep excavations, was found to be the most significant factor determining the safety of such buildings. The methodology for proceeding with the verification of ultimate (ULS) and serviceability (SLS) limit states in accordance with the literature data, current regulations, such as Eurocode 6 and other design standards, and the know-how of the authors, described in this paper was the next stage of the discussed analysis.

3

Prioritization of overall sustainability factors of cloud manufacturing through AHP and Fuzzy AHP approach

Sharma Mohneesh Kumar

Zeszyty Naukowe. Transport / Politechnika Śląska

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2023

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z. 119

37--61

EN

In this global competitive environment, with the recent advancement in information and communication technologies, the industries are adopting new strategies to sustain. Cloud manufacturing is a new technology that utilizes data analytics for better decision-making resulting in more productive, cost, and energy efficient operations. Increasing awareness towards a clean environment and optimum utilization of resources in manufacturing motivate us to study cloud manufacturing in the context of sustainability. Therefore, a significant number of social, environmental, and economic factors of cloud manufacturing are identified through literature review, and experts’ opinions and prioritization of these factors are obtained through the AHP and Fuzzy AHP methods. As per the final results obtained, “Efficient use of resources” is the most significant factor for the adoption of cloud manufacturing process and “Remote material monitoring” is the least significant factor amongst all the factors taken under consideration. The results are found to be consistent and accurate as per the value of consistency ratio. And the percentage obtained for social, environmental, and economic factors proves the cloud manufacturing process to be a sustainable manufacturing process.

4

Relationship marketing orientation in healthcare organisations with the AHP method. Internal and external customer perspective

Ersoy Yusuf, Tehci Ali

Operations Research and Decisions

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2023

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Vol. 33, No. 1

35--45

EN

Adopting the relationship marketing approach in health institutions and evaluating the weights of its dimensions will benefit the effectiveness of marketing strategies. This study aimed to determine the critical levels of relationship marketing orientation components in private health institutions using the analytical hierarchy process (AHP). In the study, relationship marketing orientation was evaluated according to six criteria in line with the opinions of five experts for employees and 20 people who previously benefited from health services for their customers. As a result, the criterion with the highest priority value was communication with 0.259, and the best health company A. Furthermore, the AHP method results were compared with TOPSIS, EDAS, and CODAS methods. In addition, the Spearman Correlation method was used to determine the correlation between the results.

5

The use of the multi-criteria analysis for the exploration of surface irrigation potential zones : A case of the Didesa sub-basin, Abay basin, Ethiopia

Tamiru Habtamu, Dinka Megersa O.

Journal of Water and Land Development

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2023

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no. 58

198--211

EN

This paper presents a study conducted using the Multi-Criteria Analysis (MCA) to explore surface irrigation potential zones in the Didesa sub-basin of the Abay basin in Ethiopia. Physical land features, such as land use / land cover (LULC), slope, soil depth, drainage, and road proximity, along with climate factors like rainfall and evapotranspiration, and population density, were identified as criteria for the exploration. The analytic hierarchy process (AHP) is a powerful structured decision-making technique commonly used for complex multi-criteria analysis problems where multiple criteria need to be considered. The importance of the criteria was prioritised and ranked in the analytic hierarchy process (AHP). Five qualitative-quantitative based surface irrigation potential zones were identified, namely highly suitable (48.40%), moderately suitable (27.26%), marginally suitable (13.27%), not suitable (4.91%), and irrigation constraints (6.16%). The consistency of the AHP technique in the exploration of surface irrigation potential zones is evaluated by the consistency index at CI = 0.011 and confirmed the correctness of weights assigned for the individual key factor in the AHP. The accuracy of the potential zones generated in the AHP was evaluated with ground-truth points and a supervised LULC classification map. Moreover, a good agreement was made among the classes with the kappa index (KI = 0.93). Therefore, the application of the MCA for the exploration of surface irrigation potential zones was successful, and the results of the study will be useful to strengthen the irrigation in the explored potential zones.

6

Evaluating the post-mining land uses of former mine sites for sustainable purposes in South Africa

Mhlongo Sphiwe E.

Journal of Sustainable Mining

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2023

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Vol. 22. iss. 2

110--127

EN

This paper uses a case study of an abandoned magnesite mine in the Limpopo Province of South Africa to ﬁnd ways of identifying post-mining land used from the current uses of the abandoned mine sites or features. The approach used involved carrying out a ﬁeld characterization of the mine site and documentation of the current uses of the features of the abandoned mine site. The technique used to identify the internal and external factors of the land uses involved analyzing their Strength, Weakness, Opportunities, and Threats. The Analytic Hierarchy Process (AHP) technique was used for further ranking of the land uses to identify the most post-mining or rehabilitation land uses for the different parts of the mine. Lastly, the earthwork requirement in reshaping the terrain of the mine to support the selected land uses was estimated from the 3D-terrain models generated from height data collected using a Real-Time Kinematic Geographical Positioning System. The results of the study identiﬁed land use that needs further surface development as the most appropriate for the abandoned Nyala Mine. These land uses demonstrated the potential of addressing the hazards of the mine with the clear promise of improving the socio-economic status of the host communities.

7

A Comparative Analysis of Analytical Hierarchy Process and Fuzzy Logic Modeling in Flood Susceptibility Mapping in the Assaka Watershed, Morocco

Khaddari Achraf, Jari Abdessamad, Chakiri Saïd, El Hadi Hassan, Labriki Allal, Hajaj Soufiane, Goumghar Lahcen, El Harti Abderrazak, Abioui Mohamed

Journal of Ecological Engineering

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2023

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Vol. 24, nr 8

62--83

EN

The Assaka watershed is one of the largest watersheds in the Guelmim region in southern Morocco. It is frequently exposed to the many flooding events that can be responsible for many costly human and material damages. This work illustrates a decision-making methodology based on Analytical Hierarchy Process (AHP) and Fuzzy Logic Modelling (FLM), in the order to perform a useful flood susceptibility mapping in the study area. Seven decisive factors were introduced, namely, flow accumulation, distance to the hydrographic network, elevation, slope, LULC, lithology, and rainfall. The susceptibility maps were obtained after normalization and weighting using the AHP, while after Fuzzification as well as the application of fuzzy operators (OR, SUM, PRODUCT, AND, GAMMA 0.9) for the fuzzy logic methods. Thereafter, the flood susceptibility zones were distributed into five flood intensity classes with very high, high, medium, low, and, very low susceptibility. Then validated by field observations, an inventory of flood-prone sites identified by the Draa Oued Noun Hydraulic Watershed Agency (DONHBA) with 71 carefully selected flood-prone sites and GeoEye-1 satellite images. The assessment of the mapping results using the ROC curve shows that the best results are derived from applying the fuzzy SUM (AUC = 0.901) and fuzzy OR (AUC = 0.896) operators. On the other hand, the AHP method (AUC = 0.893) shows considerable mapping results. Then, a comparison of the two methods of SUM fuzzy logic and AHP allowed considering the two techniques as complementary to each other. They can accurately model the flood susceptibility of the Assaka watershed. Specifically, this area is characterized by a high to very high risk of flooding, which was estimated at 67% and 30% of the total study area coverage using the fuzzy logic (SUM operator) and the AHP methods, respectively. Highly susceptible flood areas require immediate action in terms of planning, development, and land use management to avoid any dramatic disaster.

8

Metoda identyfikacji potencjalnych lokalizacji farm wiatrowych na terenach wiejskich

Wiącek Marlena, Malinowski Mateusz

Infrastruktura i Ekologia Terenów Wiejskich

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2023

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nr I/1

205--220

PL

Transformacja energetyczna kraju wymaga zwiększenia udziału odnawialnych źródeł energii (OZE) w strukturze wytwarzania energii. W szczególności dotyczy to zwiększenia udziału energetyki wiatrowej, która już teraz pełni funkcję lidera w produkcji energii elektrycznej z OZE. Rozwój tego obszaru OZE jest nieunikniony, pomimo barier natury społecznej i prawnej. Istniejące opracowania kartograficzne wskazują obszary predysponowane jak i nieprzydatne do lokalizacji farm wiatrowych w ujęciu krajowym. Istotnym jest jednak wskazywanie potencjalnych obszarów na szczeblu lokalnym z uwzględnieniem kryteriów nie tylko przestrzennych, ale także tych, które dotyczą funkcjonalnego charakteru analizowanych obszarów. W pracy przedstawiono autorską metodę wskazywania potencjalnych lokalizacji farm wiatrowych na obszarach wiejskich, przetestowaną na przykładzie gminy Borowa (woj. podkarpackie). Analizy przeprowadzono dla 3 wariantów wysokości siłowni wiatrowych (do 30 m, do 50 m, do 70 m). W wariancie 1 (wiatraki o wysokości do 30 m) wyznaczono 17 lokalizacji, które łącznie stanowią 19% powierzchni gminy, w wariancie 2 wskazano 7 obszarów (9% powierzchni gminy), a wariancie 3 wyznaczono 3 lokalizacje (5% powierzchni gminy). Największa moc zainstalowaną z siłowni wiatrowych można uzyskać dla wariantu 3 (wiatraki do 70 m), pomimo najmniejszej dostępnej powierzchni.

EN

The energy transformation of the country requires an increase in the share of renewable energy sources (RES) in the energy generation structure. This particularly applies to increasing the share of wind energy, which already serves as a leader in electricity production from RES. The development of this renewable energy sector is inevitable, despite social and legal barriers. Existing cartographic studies indicate areas that are predisposed and unsuitable for locating wind farms at the county level. It is important to identify potential areas at the local level, taking into account not only spatial criteria, but also those related to functional characteristics, such as rural areas. This paper presents an original method for identifying potential locations for wind farms in rural areas, tested using the example of the Borowa Commune (Podkarpackie Voivodeship). Analyses were conducted for three height variants of wind turbines (up to 30m, up to 50m, up to 70m). In Variant 1 (wind turbines up to 30m), 17 locations were identified (19% of the commune surface), in Variant 2, 7 areas were indicated (9% of the commune surface), and in Variant 3, 3 locations were identified (5% of the commune surface). The highest installed power can be achieved in Variant 3 (wind turbines up to 70m), despite the fact that the available space is the smallest.

9

Comparative characteristics of GIS using the AHP method

Miłek Marzenna, Stanik Jerzy, Kiedrowicz Maciej, Napiórkowski Jarosław

GIS Odyssey Journal

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2023

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Vol. 3, no. 1

41--72

EN

The article discusses the methodology of comparative analysis of GIS class computer systems using the AHP method. Eighteen selected GIS systems that meet the criterion of completeness of all data required in the research were fully analysed. The proper comparative features were preceded by the recognition of the market situation in terms of the availability of GIS systems. Eight thematic groups of criteria were used in the research, on the basis of which GIS solutions were selected for comparison. The adopted system selection criteria carry out the selection of objects in a binary manner. The set of features and comparative criteria was created on the basis of our own experience and numerous consultations with specialists and field experts. The selected criteria are the most commonly used and most commonly accepted in the environments that systems of this class use on a daily basis. Both the functional scope (features, functions, properties, advantages and disadvantages) and the degree of fulfillment of subsequent criteria by the considered systems were defined and described.

10

Assessment of the possibility of locating electric car charging stations using Fuzzy AHP and GIS – the case of Łódź, Poland

Kucharski Adam, Szterlik-Grzybek Paulina

Ekonomia i Środowisko

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2023

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nr 1

134--148

EN

This paper examines the possibility of locating electric vehicle charging stations using multi-criteria decision analysis (MCDA) and GIS. The study presents an integrated approach, which can be helpful in spatial planning. Recent years have witnessed a growing interest in using alternative power sources for motor vehicles. It is stimulated by top-down factors, such as regulations introduced by the European Commission or the introduction of the so-called “clean transport zones” by some local governments, as well as the bottom-up ones, including the increase in the cost of maintaining fossil fuel-powered cars. Local governments can employ the analysis presented in the paper to find a coherent development strategy for using electric vehicles (EVs) in cities. Based on the verified hypothesis, the Łódź city area has diverse suitability for EV charging stations, with predominant unfavourable regions for such investments. The research aims to find the methodology for performing the suitability analysis to locate new infrastructure elements in an urban space.

PL

W artykule zbadano możliwość lokalizacji stacji ładowania pojazdów elektrycznych pod kątem wykorzystania wielokryterialnej analizy decyzyjnej (ang. Multicriteria Decision Analysis - MCDA) oraz GIS (ang. Geographic Information Systems–systemy informacji geograficznej). W ostatnich latach obserwuje się wzrost zainteresowania wykorzystaniem alternatywnych źródeł napędu pojazdów mechanicznych. Stymulują go zarówno czynniki odgórne jak przepisy wprowadzane przez Komisję Europejską czy wprowadzanie tzw. stref czystego transportu przez niektóre samorządy, ale i oddolne. Te ostatnie obejmują wzrost kosztów utrzymania samochodów napędzanych paliwami ropopochodnymi, co skłania właścicieli samochodów do poszukiwania sposobów ich ograniczenia. Tego typu badania mogą być dalej wykorzystywane przez samorządy w celu znalezienia spójnej strategii rozwoju wykorzystania aut elektrycznych w miastach. W pracy weryfikowana jest hipoteza mówiąca, że obszar miasta Łodzi jest zróżnicowany pod względem przydatności do lokalizacji stacji ładowania samochodów elektrycznych, z przewagą obszarów niekorzystnych dla tego typu inwestycji. Ponadto badania mają na celu znalezienie metodyki umożliwiającej przeprowadzenie analizy przydatności pod kątem lokalizacji nowych elementów infrastruktury w przestrzeni miejskiej.

11

Identification of Groundwater Potential Zones Using Remote Sensing, Geographical Information System, and Analytic Hierarchy Process Techniques – A Case Study in the Nerodime Watershed, Kosovo

Avdullahi Sabri, Hajra Argjend

Ecological Engineering & Environmental Technology

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2023

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Vol. 24, iss. 4

147--161

EN

This research was carried out to analyse the groundwater potential areas in the Nerodime River catchment area. This paper used the standard methodology to determine the potential areas of groundwater resources based on the combated remote sensing, geographic information system, and hierarchical analytical process. In this river catchment area, a total of eight groups of criteria have been selected which have an impact on groundwater storage. Groundwater research would not be possible without the use of various data that have a direct impact on groundwater such as drainage, elevation, geology, land use and land cover, lineament, rainfall, slope, and soil. The results obtained through statistical analysis with software were compared with the data collected in the field, a comparison which resulted in an accuracy of approximately 95%. The results are reflected in table form and using maps also prepared with ArcGIS software.

12

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.

13

Selection of train traffic manager’s activities in training process using Functional Resonance Analysis Method

Haładyn Szymon, Magott Jan, Restel Franciszek, Wolniewicz Łukasz

Archives of Transport

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2023

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Vol. 65, iss. 1

39--51

EN

In training process of rail traffic manager (controller) using virtual reality technology, selection of activities among those assigned to a workplace and scenarios that should be taken in training is an important issue. The selection method that is based on performance variability of her/his activities has been proposed in the paper. This variability has been characterized by timing and precision. The traditional reliability and safety analysis methods are not sufficient when building the training program for traffic managers. In the paper the train controller work has been modelled using Functional Resonance Analysis Method (FRAM) that is system oriented approach. Scales of values of timing and precision that are train transport driven have been presented. They are different when comparing with typical timing and precision scales given in FRAM literature. In the paper the estimation of probabilities of occurring of values of timing and precision scales for these activities has been calculated as the mean from the values obtained by questionnaire done in traffic manager community or using Analytic Hierarchy Process (AHP) method. In FRAM with AHP approaches presented in literature, AHP pairwise comparison is executed using natural numbers and their reciprocals what is typical in AHP method. In our paper the AHP is used for estimating the probabilities, so in pairwise comparing the rational numbers are applied, because natural numbers and their reciprocals would limit the set of values of probabilities. The activities and scenarios that the training should be concentrated on are selected from those with the greatest variability.

14

Site suitability analysis for construction of an airport in the middle Euphrates - Iraq, using a GIS-based AHP technique

Manea Ali Kadhim

Archives of Civil Engineering

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2023

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Vol. 69, nr 1

469--494

EN

This article discusses in a simplified manner how to use the multiple functions of the Geographic Information System (GIS) to support the engineering decision for vital and important sites that require the decision-maker to have a high degree of certainty, such as the decision related to choosing the best location for the airport among several sites. This paper aims to provide a practical model that allows for a decision support system on how to adopt a GIS software by both its part Arc-Map and Arc-Catalog combined with analytic hierarchy process (AHP) method to make strategic decisions by spatial and non-spatial analysis to choose the appropriate site for the project as those related to choosing an airport location. Nineteenth criteria were considered to analyze the study area which is represented by three governorates of the middle Euphrates region in Iraq, Babil, Kerbala, and AL-Najaf. Finally, the research presented a practical and efficient approach for the decision maker to select the appropriate location for the airport based on the value of the highest suitability index.

15

The critical trait of digital entrepreneur: mixed methods research

Chuang Li-Min, Lee Yu-Po, Chang Yu-Ju

Acta Innovations

|

2023

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no. 46

5--18

EN

Pioneers of the digital era have invented a different business model and expanded the existence of the digital economy, and the digital entrepreneurship is the beginning of this digital revolution. To explore the key characteristics of digital entrepreneurs, this study is divided into two stages. The first stage conducted a literature review and case study to construct the characteristic elements of the entrepreneurship into a model of digital entrepreneurs. In the second stage, the relative weights of the key characteristics of digital entrepreneurs are understood through an analysis of the AHP questionnaire results. The results show that autonomy and selfdiscipline are keys among the main dimensions of the key characteristics of digital entrepreneurs' entrepreneurship; the secondary dimension of "action power" is key in the main dimension of "autonomy and self-discipline"; the secondary dimension of "business networks" is key in the main dimension of "social capital"; the secondary dimension of "insight" is key in the main dimension of "innovation and breakthrough"; the secondary dimension of "communication ability" is key in the main dimension of "leadership communication".

16

Suitable sites identifcation for potential rainwater harvesting (PRWH) using a multi criteria decision support system (MCDSS)

Radwan Farid, Alazba Abdulrahman Ali

Acta Geophysica

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2023

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Vol. 71, no. 1

449--468

EN

The world today faces water scarcity issues, especially in developing countries. This situation is further aggravated under arid and semiarid climates with the water demand increasing and limited rainfall events. The study was conducted in the Riyadh metropolitan area of Saudi Arabia. The study area has a hot arid desert climate. Therefore, there is an urgent need for harvesting rainwater to confront the increasing water demand. This research aims to identify the potential rainwater harvesting (PRWH) suitable sites based on the multi-criteria decision support system by the spatial analytic hierarchy process, with the aid of the integration of geographic information systems and remote sensing techniques. Mapping PRWH was carried out using the thematic layers of the slope, soil texture, land use and land cover (LULC), precipitation, and potential runoff coefficient (PRC). The study findings revealed that Riyadh has four hydrologic soil groups (HSGs), namely A, B, C, and D groups, and the percentage area is 2%, 26%, 3%, and 71%, respectively. The slope classes are fat (8–15%), moderately steep (>15–30%), and mountainous (>30%). The LULC layers are barren lands, agricultural lands, urban, and roads. The precipitation has been distributed into five classes namely very low (5.9%), low (10.1%), medium (13.2%), high (13.5%), and very high (57.3%) of the total investigated area. The PRC values were distributed in five levels namely very low (0.3–0.5), high (>0.5–0.7), and very high (>0.7–1), where about 83% of the capital faces high and very high PRC values. The percentage area of PRWH suitability sites is unsuitable (0.4%), poor (0.8%), moderate (13.3%), good (47.5%), and excellent (38%) of the total entire area. More than 85% of Riyadh has good and excellent suitability for PRWH. This study is tantamount to a powerful tool for identifying the PRWH suitability sites in arid and semiarid regions to confront the water demand increase.

17

Contribution of electrical prospecting and spatiotemporal variations to groundwater potential in coastal hydro-sand beds: a case study of Akwa Ibom State, Southern Nigeria

George Nyakno Jimmy, Agbasi Okechukwu Ebuka, Umoh James Anthony, Ekanem Aniekan Martin, Ejepu Jude Steven, Thomas Jewel Emem, Udoinyang Ifiok Efiong

Acta Geophysica

|

2023

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Vol. 71, no. 5

2339--2357

EN

The current study used vertical electrical sounding (VES), borehole (BH) data, Remote Sensing (RS), and Geographic Information System (GIS) techniques to identify groundwater potential zones in the coastal area of Akwa Ibom state, Nigeria, for the first time. This research aimed at producing groundwater potential zone map that can divide the study region into separate zones based on their groundwater potential ranking. The deployed method integrated VES procedure utilizing the Schlumberger electrode configuration some core samples for estimation of porosity, Satellite Shuttle Radar Topography Mission (SRTM), Digital Elevation Model (DEM), which served as input data for RS and GIS. Thematic maps of lineament density, lithology, land use and land cover, drainage density, and slope were created as GIS layers in a geo-database. Weightages were assigned based on a pair-wise assessment of the components that appear to be essential in retaining, storing, and transporting groundwater. The Analytical Hierarchy Process (AHP) was used in a GIS setting to merge five thematic maps of elements controlling groundwater occurrence and movement using weighted overlay. Results show that aquifers with high thickness and depths are clustering around VES 9, VES 14, and VES 15 that have the highest aquifer thickness in the range of 219–262 m and the highest aquifer depth in the range of 222.09–264.74 m. The highest aquifer resistivity in this area ranges from 2963 to 3683 Ωm. The hydraulic conductivity of the area is highest around the south-eastern part of the study area, with maximum value of 3.43 m/day. The transmissivity increases in the northern part of the study area, while the eastern parts showed the lowest values. The highest aquifer resistivity in this area ranged from 2963 to 3683 Ωm. Inference from analysis indicated that the most important element was soil type (43%), followed by lineament density (33%) and slope (13%). Land use/land cover was discovered as a marginal contributor to groundwater in the research region, accounting for about 4% of the total contributors. The study CR determined to be 0.043884, is much lower than the 0.10 consistency threshold and hence the justification of the results. The result of the overlay of the geophysical survey on the groundwater potential zones obtained from the RS, GIS, and VES techniques done in the first time in the study area has shown seamlessly that the study area has high groundwater prospectivity for subsistent and commercial extractions.

18

Multi-criteria methodology for evaluating university campus facilities using the AHP approach

Blachowski Jan, Hajnrych Monika, Trybała Paweł, Tankielun Marek

Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie

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2022

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Nr 86

57--72

EN

Wroclaw University of Science and Technology carries out a project titled “University of New Opportunities”. Within the frames of this project a Digital Accessibility Guide (DAG) is developed with the aim to provide comprehensive information on the university’s facilities with special emphasis on people with disabilities. The Analytical Hierarchy Process (AHP) methodology was applied to select the 25 facilities to be included in the DAG. The proposed methodology included development of a hierarchical structure of the model, the determination of seven evaluation criteria, adoption of a scoring scale (1–5) of sub- criteria for each criterion, and their pairwise comparison by an interdisciplinary group of experts. The selected criteria comprised of the functions and services of buildings, the number of users, communication and architectural accessibility, the number of indications in the accessibility survey and the number of classrooms. The final ranking of facilities was created based on the evaluated characteristics of nearly fifty buildings and the results of the AHP evaluation of the selection criteria and their weights. The consensus of the expert group involved in the pairwise comparison was 2.8% and the weighted score of the facilities ranged from 4.68 to 1.29 with a median of 2.16. The applied approach structured the decision problem in accordance with the multicriterial decision analysis approach. The proposed methodology for selecting the University's strategic facilities is universal and may be used in other universities.

PL

W ramach realizowanego na Politechnice Wrocławskiej projektu „Politechnika Nowych Szans” tworzony jest Cyfrowy Przewodnik, którego celem jest udostępnienie użytkownikom informacji o obiektach uczelni z uwzględnieniem potrzeb osób z niepełnosprawnością. Wybierając 25 najważniejszych obiektów, które znajdą się w Cyfrowym Przewodniku, dokonano ich oceny metodą hierarchicznej analizy problemu decyzyjnego AHP. Metoda obejmowała opracowanie przez interdyscyplinarną grupę ekspertów struktury hierarchicznej modelu, wyznaczenie siedmiu kryteriów oceny, opracowanie skali punktacji (1–5) lub podkryteriów, a następnie znaczenia. Przyjęte kryteria obejmowały m.in. funkcje i usługi budynków, liczbę użytkowników, dostępność komunikacyjną i architektoniczną, liczbę wskazań w ankiecie dostępności oraz liczbę sal dydaktycznych. Na potrzeby analizy dane zostały pozyskane od jednostek administracyjnych Politechniki Wrocławskiej, a także w trakcie audytów każdego z analizowanych budynków. Na podstawie analizy charakterystyk blisko pięćdziesięciu obiektów uczelni oraz wyników oceny kryteriów wyboru i ich znaczenia utworzono ostateczną listę rankingową. Konsensus grupy ekspertów wyniósł 2,8%, a ważona punktacja obiektów zawierała się w zakresie 4,68-1,29 przy medianie 2.16. Zastosowane podejście pozwoliło na ustrukturyzowanie i zobiektywizowanie analizowanego problemu decyzyjnego. Zaproponowana metoda wyboru obiektów strategicznych uczelni ma charakter uniwersalny i może być wykorzystana w analizie kampusów innych uczelni wyższych.

19

Conventional or organic wine production? Establishing the hierarchy of values in the producer's decision-making model

Pink Małgorzata, Wojnarowska Magdalena, Szarek Joanna, Rudziński Krzysztof, Varese Erica

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2022

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z. 156

347--373

EN

Purpose: The aim of this article is to understand how Polish winemakers make decisions about the type of production; to identify barriers of implementation of organic practices organic, to understand the values that are behind the decision-making process in the context of the three areas of sustainable development and present recommendations in relation to the conclusions. Design/methodology/approach: Methodological approach is based on Analytical Hierarchical Process (AHP). The study included 18 values grouped according to belonging to the environmental, social and economic area. The importance of each value was compared by the respondents with the other values, which allowed to understand the course of the decision-making process in the context of the goals and importance of environmental, social and economic values represented by organic and conventional winemakers. Findings: The research revealed significant differences in the approach to the environmental and economic values. Conventional and organic winemakers differ in the hierarchy of values in the context of the triad of sustainable development (economy, society, environment), and the key values taken into account by conventional winemakers are pecuniary values, in contrast to organic winemakers, for whom non-economic values are key, in particular from the area of environmental issues. Organic production is perceived by the surveyed winemakers in ideological rather than business terms. Conventional winemakers see the organic production as more complicated and problematic. Practical implications: This is a significant problem showing the lack of education and awareness in relation to the theory and practice of an organic production. This situation should be alarming for agricultural advisory institutions and the entities of administration responsible for the implementation of sustainable development assumptions. Originality/value: This paper fills a gap in literature science, by the Authors' knowledge, this is the first article to use the AHP method to determine how winemakers make decisions about the type of production.

20

AHP QFD methodology for a recycled solar collector

El-Badaoui Meryem, Touzani Abdellatif

Production Engineering Archives

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2022

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Vol. 28, Iss. 1

30--39

EN

As it is presented in literature, the AHP-QFD method is a method applicable to many sectors, namely industry. The article is a part of this framework, applying this method for the design of a recycled solar air heater according to customer’s expectations. The methodology is based on the application of QFD to detect consumer requirements, technical characteristics and their relationship matrices. while the AHP method aims to evaluate the weights of each criterion in order to make the right decision. In this study, the manufacturing process was projected from upstream to downstream, as well as a market study was established in October 2020, in Khouribga-Morocco, in which 50 people responded favourably to a survey about the most frequently searched requirements which include size, efficiency, design, price and ecology as well as their importance in a solar collector. Besides, relationship matrices and the weight matrices of the technical criteria have been established, by presenting a consistent ratio “CR” less than 10% showing the consistency of the assessment, and finally a priority given to the characteristics of the recycled solar air heater: cans and thermal insulation more superior to the others characteristics.