Wyniki wyszukiwania - BazTech

1

Application of the fuzzy analytic hierarchy process for water resources in the Wadi AlHasa catchment, Jordan

Mohammad Alsharifa Hind, Odeh Taleb, Abualhaijaa Mahmoud, Shatanawi Khaldoun, Halalsheh Maha

Journal of Water and Land Development

|

2024

|

no. 60

100--111

EN

This article introduces a groundwater vulnerability assessment model that utilises the fuzzy analytic hierarchy process (FAHP) in the Wadi AlHasa catchment, Jordan. The assessment takes into account both geomorphological and hydrogeological variables, employing a comprehensive methodology that integrates various parameters. To evaluate the catchment, the study employs remote sensing and Geographic Information System (GIS) techniques. The analysis of the digital elevation model enables the creation of a map illustrating the diverse geomorphology of the catchment. This geomorphology significantly influences drainage density, direction, and the spatial distribution and intensity of flash flood events. Moreover, the study develops and maps a fuzzy FAHP DRASTIC vulnerability index, which proves to be a valuable tool for assessing the susceptibility of groundwater resources to contamination. The unique feature of the index is its ability to incorporate uncertain or subjective data, providing a means to evaluate the significance of various influencing factors. This information serves as critical support for decision-making and management efforts geared towards safeguarding and enhancing groundwater resources. Within the study area, the DRASTIC vulnerability index values span from 0.08325 to 0.28409, with 18% of the site exhibiting a high vulnerability rate. Additionally, the article implements a managed aquifer recharge model (MAR), with 31% of the area falling into MAR classes. Among these, 22.1% are classified as a high MAR class, while 0.7% belong to a very high MAR class. These findings underscore the feasibility of MAR projects in regions with limited water resources.

2

Analysis of Inhibiting Factors in Shipyards in Clusterizing Shipyards on the Northern Coast of Aceh Indonesia Using the Fuzzy AHP Method – A Preliminary Study

Rizwan Thaib, Chaliluddin Makwiyah A., Nuvus Hayatun, Arif Muhammad, Muchlis Yusrizal, Akhyar Akhyar

Ecological Engineering & Environmental Technology

|

2023

|

Vol. 24, iss. 7

38--45

EN

The fishing shipyard in Banda Aceh City is a privately owned shipyard and is managed in a family manner. The shipyard here is active in carrying out maintenance, repair and construction of new ships when there is demand from consumers. The shipyards in Banda Aceh City generally make ships made of wood. The problem that is currently being faced is that there are many abandoned ships due to lack of finance, natural resources, human resources and environment, this is an obstacle to the progress and development of shipyards. The purpose of this study was to determine the inhibiting factors that exist in shipyards in the city of Banda Aceh and find alternative solutions to these problems. The method used in this study was a survey method used to look at existing symptoms and collect data on the factors related to research variables and then analyzed using the Fuzzy AHP method. The results of this study indicate that the financial inhibiting factor is the most influential factor in shipyards with a resulting value of 0.4635, the inhibiting factor of Natural Resources is worth 0.35675, the inhibiting factor of Human Resources is worth 0.2865 and the inhibiting factor from the environment is the inhibiting factor which is the lowest or less influential with a value of 0.14325. The alternative solutions to financial problems are capital loans and investments.An alternative for natural resources is the addition of a minimum stock to anticipate stock scarcity and delays in the delivery of materials and tools. The alternative for human resources is the existence of an office, organizational structure, and division of tasks as well as raising awareness of occupational health and safety.As for the alternatives for the environment, namely the need for buildings or installation of tarpaulins for the areas where ships are built, good land management and studies of other natural impacts.

3

One of the ways to identify the weights of indicators of the fuzzy analytical hierarchy process for determining bsc of an airline company

Satybaldiyeva Dinara, Mukhanova Gulmira, Yelemessov Kassym, Baskanbayeva Dinara, Satybaldiyev Oraz

Transport Problems

|

2021

|

T. 16, z. 4

83--94

EN

This article presents the justification for the relevance of the method for assessing the performance of an airline company. Based on a survey of foreign sources, it was proposed to use the integrated method of the analytic hierarchy process using the example of “Air Astana”. The results of the method are described based on the determination of effective indicators. The conclusions are arrived at on the expediency of applying the fuzzy analytic hierarchy process (FAHP) approach for the evaluation the airline's performance. The priority (importance) and weight of all perspectives and the corresponding indicators are determined according to the proposed method. A method of assessing the probability degree of fuzzy numbers is applied to calculate the weights of the indicators (perspectives). The results of the study show that the company will be able to monitor the effectiveness of its activities using selected indicators for each perspective. The application of the instruments enhances the effectiveness of management activities of the airline and confirms the relevance of a follow-up study of the problem. This approach can be used for the management of companies in different sectors of the national economy to enhance the efficiency of management decision-making.

4

An improving the occupational risk assessment in industrial enterprises

Siwiec Dominika, Woźny Artur, Pacana Andrzej

System Safety : Human - Technical Facility - Environment

|

2021

|

Vol. 3, nr 1

260--267

EN

An occupational risk assessment is one of the main processes to assure a safe and healthy workplace. It was shown, that this process is particularly important in the cause of industrial enterprises, in which the number of accidents is the largest. In these enterprises, one of the most often practiced methods is the PN-N-18002 method. However, it was concluded this method has some limitations. They concern the way of assessing the risks in the traditional number scale, which is less precise than the fuzzy triangular number (using in FAHP). Therefore, the aim is to improve the process of assessment in industrial enterprises by integrated the PN-N-18002 method with the FAHP method (Fuzzy Analytic Hierarchy Process). The test of the proposed method was made for three machine operator positions used to aggregate extraction in one of the Podkarpacie enterprises. These positions were: loader operator (Ł-34), digger operator (CAT 323), dredge operator (300/250 KREBS 10/8). The concept of the method was to identify in a precise way what is the greatest extent danger to the operators of these workplaces. It was shown, that it is the work at height. It was concluded, that this method can be practice to risk assessment of other workplaces, among others from industrial enterprises. The originality is the integrated risk assessment method (PN-N-18002) with the fuzzy multicriteria decision method (FAHP) as part of achieving the precise results of risk assessment.

5

A MCDM Based on Goal Programming and GIS-Based Risk Assessment for the Evaluation of Educational Locations in Conflict Areas

Hallak Jamil, Polat Elifcan Göçmen

Foundations of Computing and Decision Sciences

|

2021

|

Vol. 46, No. 4

361--391

EN

Conflict is recognized as a major barrier in socio-economic development. In conflict situations, most sectors such as health, food, shelter and education are adversely affected. The provision of education services to conflict-affected children saves them from becoming a lost generation and contributes to community building. Thus, we conducted this research to investigate the potential of a GIS (Geographic Information Systems) approach and risk assessment based multi-criteria decision making (MCDM) for the allocation of displaced dropped-out children to the most appropriate educational centres, taking into account multiple goals related to cost, distance, risk, etc. A two-stage approach was adopted, utilizing a risk assessment approach, and a location-allocation approach. The risk assessment approach was carried out using GIS and F-AHP (Fuzzy Analytic Hierarchy Process) to determine the risk value of each candidate educational centre in the conflict area. In the location-allocation stage, a mathematical model was developed to allocate all demands to the chosen centres. All presented methods were computationally conducted on real case data provided by direct beneficiaries and stakeholders in the 26 sub-districts in the Idleb governorate, Syria. The computational results demonstrate that the proposed approaches ensure practical and theoretical impacts.

6

Fuzzy approach using experts’ psychological conditions to estimate the criteria importance for the assessment of innovative projects risk

Deptuła A. M., Rudnik K.

Management and Production Engineering Review

|

2018

|

Vol. 9, No. 1

13--23

EN

The difficulty of innovation risk assessment makes it necessary to use a multi-criteria analysis. Innovative projects are related to unstructured problems and the uncertainty, therefore, the use of fuzzy logic in the innovation risk assessment is analyzed. This paper proposes a method of determining the weights of criteria in order to innovation risk assessment. The weights are determined by 5 general criteria and 14 detailed criteria of innovation risk assessment. The proposed method is an extension of the fuzzy AHP method. The extension consists in taking into consideration the group decision-making approach with experts’ psychological conditions. The groups of experts have been chosen based on an elaborated form. The form makes it possible to characterize the persons within the scope of different psychological conditions. The proposed method provides objective and rational decision-making. The paper presents also a comparison of results with the fuzzy AHP method without the group decision making. The weights obtained by the proposed method are more diversified and bring out the most important criteria.

7

Risk assessment of tunnel portals in the construction stage based on fuzzy analytic hierarchy process

Deng Xianghui, Wang Rui, Xu Tian

Archives of Civil Engineering

|

2018

|

Vol. 64, nr 4/I

69--87

EN

This study presents a fuzzy analytic hierarchy process (FAHP) by integrating analytic hierarchy process (AHP) and fuzzy cognition to evaluate the construction risks of tunnel portals. Wuguanyi Tunnel is taken as the research objective to validate the performance of the proposed method. The result shows that the proposed decision making method can effectively identify risk factors and determine the risk level during the construction of tunnel portals. Finally, the corresponding control measures during the construction of the Wuguanyi Tunnel portal are proposed according to the risk assessment results.

8

Evaluation of the Parameters of the Green Supplier Selection Decision in Textile Industry

Acar A. Z., Önden I., Gürel Ö.

Fibres & Textiles in Eastern Europe

|

2016

|

Vol. 24, no. 5 (119)

8--14

EN

Green issues are a popular topic in today’s business life, and it is possible to see green products or advertisements in many different places due to the demand for a healthier lifestyle. Companies that are willing to be a part of the green concept should integrate this philosophy in all departments. As a result, the procurement might be seen a crucial part of this integration. However, in the emerging markets, green issues might be pushed into the background due to the competitive environment. In this study, we investigated green and other parameters in the supplier selection decision in textile industry. A decision criteria list was created and evaluated by 28 experts using the fuzzy analytic hierarchy process. The results showed that green issues have an influence on the decision environment; however, classical parameters, such as cost, delivery reliability, quality, service, and strategic alliance still carry more priority compared to green criteria consisting of environmental management, green products, and pollution control.

PL

Zagadnienia ekologiczne są bardzo istotne przy współczesnej produkcji. Wytwórcy, którzy chcą brać udział w wytwarzaniu i kształtowaniu ekologicznych zasad muszą brać pod uwagę wszystkie aspekty procesu wytwórczego. W tym opracowaniu badano ekologiczne aspekty wyboru dostawców biorąc pod uwagę również koszty dostawy produktów, warunki dostawy, jakość, system obsługi oraz uwarunkowania strategiczne.

9

Multi-criteria investment decision support model using fuzzy analytic hierarchy process (F-AHP) method for power industry

Stoltmann A., Bućko P., Jaskólski M.

Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej

|

2015

|

Nr 47

179--182

EN

In this paper, the comparative analysis of two wind farm construction projects was presented. This particular type of analysis is commonly applied before purchasing investment project being in a planning phase by a company interested in its development. Conduction of this type of analysis is prompted by the necessity to take into consideration the requirements of Polish legislation. Comparison of wind farm construction projects was based on the analysis of their advancement and the priority of particular investment stages. In order to verify which stage is the most important for the implementation of the construction project, specified tasks should be performed in each particular stage. These tasks determine criteria utilized to compare wind farm construction projects. Fuzzy Analytic Hierarchy Process (F-AHP) method, that allows simultaneous prioritization of criteria in terms of quality and quantity, was applied to perform the analysis. The method demonstrates that obtaining environmental decision for wind farm area is the most important criterion. The method indicate also by which criteria project FW2 has a greater chance of implementation than FW1 project.

PL

Referat przedstawia porównanie projektów dwóch farm wiatrowych. Tego typu analiza znajduje zastosowanie w przypadku zakupu projektów inwestycyjnych będących w fazie przygotowania. Spowodowane jest to koniecznością uwzględnienia wymogów określonych w ustawodawstwie polskim. Porównanie projektów budowy farm wiatrowych oparto na analizie zaawansowania oraz priorytetu poszczególnych etapów inwestycji. Aby zweryfikować, na jaki etap należy zwrócić szczególną uwagę posłużono się analizą zagadnień opisujących poszczególne etapy oraz zadań w nich realizowanych. Zagadnienia te definiują kryteria wpływające na realizację projektu. Analizę przeprowadzono z wykorzystaniem metody F-AHP, która pozwala na ilościowe i jakościowe uporządkowanie kryteriów. Analiza wykazała, że priorytetowym kryterium jest uzyskanie decyzji o uwarunkowaniach środowiskowych dla obszaru farmy wiatrowej oraz to, że projekt FW2 maj większe szanse na realizację niż projekt FW1.

10

GIS and f-AHP Integration for Locating a New Textile Manufacturing Facility

Onden I., Eldemir F.

Fibres & Textiles in Eastern Europe

|

2015

|

Vol. 23, no. 5 (113)

18--22

EN

Location analysis for a textile manufacturing facility is a strategic decision due to its longterm effects on profitability, accessibility, and sustainability. Thus an analysis should be made using a comprehensive approach. The facility location selection problem can be represented with a multi-criteria structure. This study considered locating a new manufacturing facility and accepted seven decision criteria as decision parameters. Istanbul was the study area, and seven candidate locations were considered to start a new manufacturing facility. During the evaluation process, Geographic Information Systems and the fuzzy analytic hierarchy process were combined to order the preference levels of candidate areas. A novel methodology for the textile industry is proposed to integrate experts’ thoughts and geographic information.

PL

Analiza lokalizacji nowego przedsiębiorstwa produkującego tekstylia jest decyzją strategiczną ze względu na długotrwałe efekty tej decyzji, związane z opłacalnością produkcji, dostosowaniem i zrównoważonym rozwojem. Dlatego analiza powinna być przeprowadzona z zastosowaniem wielu czynników. Problem wyboru lokalizacji może być realizowany przy zastosowaniu struktury multi-kryterialnej. Przeprowadzona analiza uwzględniła zastosowanie siedmiu kryteriów decyzji, przy przeprowadzeniu wykorzystano system informacji geograficznej i analityczny proces hierarchiczny oparty o funkcje zbiorów rozmytych. Wybrano rejon Stambułu do przeprowadzenia rozpatrywanej analizy.

11

An Integrated SVM and Fuzzy AHP Approach for Selecting Third Party Logistics Providers

Chen J., Zhong J.

Przegląd Elektrotechniczny

|

2012

|

R. 88, nr 9b

5-8

EN

The selection of third party logistics (3PL) providers is an important issue for enterprises to outsource their logistics business. In this paper, a new integrated model is put forward for selecting 3PL providers based on support vector machine (SVM) and fuzzy analytic hierarchy process (FAHP). In the first stage, the support vector machine (SVM) is used to classify the primary 3PL provider samples into four types which are excellent, good, medium and bad respectively. Then we can obtain the excellent samples which are the candidates for the second stage selection. In the second stage, the FAHP is used to evaluate the selected excellent samples in the first stage, so we can obtain the sorting results for the excellent samples and the optimal samples. The results of the case study show that the model is reasonable and effective and it can provide an important reference for enterprises to select 3PL providers.

PL

W artykule przedstawiono nowy zintegrowany model umożliwiający przyśpieszenie selekcji dostawcy 3PL (third party logistics). Model wykorzystuje metodę SVM (suport vector machine) i FAHP (fuzzy analytic hierarchy proces).

12

Fuzzy analytical hierarchy processing to define optimum post mining land use for pit area to clarify reclamation costs

Bangian A. H., Ataei M., Sayadi A., Gholinejad A.

Gospodarka Surowcami Mineralnymi

|

2011

|

T. 27, z. 2

145-168

EN

Open pit mining has severe environmental impacts on the environment of mining region. Mined land reclamation procedure in open pit mining contains numerous activities in order to prevent, monitor, control reduce environmental impacts of a project from exploration stage to exploitation, to mine closure and beyond. After mine closure, a permanent Post Mining Land Use (PMLU) should be implemented as an appropriate choice for use of different sections of mined land in an open pit mine. Mined land in open pit mining comprise different sections as pit(s), waste dump(s), tailing pond(s), roads, areas for on site facilities and free land zones which are not mined. The selected PMLU for each section of mined land as the most appropriate alternative based on the different points of view is presented as Optimum Post Mining Land Use (OPMLU). OPMLU for each section of mined land and the specifications of mine site are the most decisive parameters which affect the quality and volume of mine closure procedure, reclamation process and their costs. Furthermore, to define Ultimate Pit Limit (UPL) in open pit mining, consideration of mine closure and reclamation costs is essential as other costs of a mining project. Therefore, defining OPMLU for each section of mined land is essential within planning phase of an open pit mining project. In this paper the applicable alternatives of PMLU, the effective criteria, attributes and sub-attributes for defining OPMLU are presented for pit area amongst different sections of mined land. Pit area amongst different sections of mined land has more significant effects on the adjacent environment and also on defining OPMLU for the other sections of mined land. As there are several alternatives of PMLU, several criteria, attributes and sub-attributes for defining OPMLU, Multi Attribute Decision Making (MADM) methods are efficient techniques to define OPMLU for pit area. Fuzzy sets use a spectrum of numbers instead of using absolute numbers. As well, the nature of the effective parameters for defining OPMLU is same as Fuzzy numbers including incremental changes without definite limits thus the use of Fuzzy MADM modeling can produce more reliable results than the other techniques. As pair-wise comparisons and judgments through Fuzzy numbers have proper consistency with the nature of the effective parameters for defining OPMLU accordingly, a model is developed to attain OPMLU for pit area through Fuzzy Analytical Hierarchy Processing (FAHP). As a case study the model was implemented in Sungun copper mine in Northwest of Iran. Lumber production was defined as OPMLU for the pit area in this mine. It is finally concluded that using the developed model, OPMLU is defined for pit area as a key parameter to estimate reclamation costs in planning phase of an open pit mining project.

PL

Eksploatacja metodą odkrywkową niesie za sobą poważne obciążenie dla środowiska naturalnego w rejonie górniczym. Proces rekultywacji terenu wyeksploatowanego metodą odkrywkową składa się z szeregu działań mających na celu ochronę, monitorowanie, kontrolę i ograniczenie wpływu na środowisko całego przedsięwzięcia od etapu robót poszukiwawczych poprzez eksploatację aż po proces likwidacji kopalni i dalej. Po likwidacji kopalni należy przeprowadzić rekultywację terenu pogórniczego, a sposób dalszego użytkowania terenu powinien być wybrany indywidualnie dla różnych części wyeksploatowanej kopalni odkrywkowej. Obszar taki składa się z różnych części, takich jak odkrywka, zwałowiska, stawy osadowe, drogi, obszary zajęte przez infrastrukturę kopalni oraz obszary, na których nie było eksploatacji. Sposoby dalszego użytkowania dla każdej takiej części, wybrane jako najlepsze przy uwzględnieniu wielu kryteriów, stanowią optymalny sposób pogórniczego użytkowania. Optymalny sposób pogórniczego użytkowania dla każdej części byłej kopalni oraz specyfika obszaru górniczego to parametry, które w największym stopniu wpływają na jakość i zakres procesu likwidacji kopalni, rekultywację i jej koszty. Dla określenia ostatecznego kształtu wyrobiska w kopalni odkrywkowej, rozważania dotyczące kosztów likwidacji i rekultywacji są równie ważne jak inne koszty wynikające z projektu górniczego. Dlatego określenie optymalnego sposobu pogórniczego użytkowania dla każdej części eksploatowanego obszaru jest bardzo ważne na etapie projektowania eksploatacji odkrywkowej. W tym artykule przedstawiono możliwe do zastosowania wersje sposobów pogórniczego użytkowania, zastosowane kryteria, atrybuty główne i pomocnicze, które służą do zdefiniowania optymalnego sposobu pogórniczego użytkowania dla obszaru odkrywki, będącej jednym z elementów obszaru zajętego przez eksploatację odkrywkową. Obszar odkrywki ma, spośród różnych części obszaru zajętego przez eksploatację odkrywkową, największy wpływ na środowisko, jak również na sposób zdefiniowania optymalnego sposobu pogórniczego użytkowania pozostałych części kopalni. Jako że możliwe jest określenie kilkunastu sposobów użytkowania pogórniczego, istnieje wiele kryteriów, atrybutów głównych i pomocniczych dla określenia optymalnego sposobu pogórniczego użytkowania, uznano, że wielokryterialne metody podejmowania decyzji są techniką efektywną do określenia optymalnego sposobu pogórniczego użytkowania odkrywek. Zbiory rozmyte operują przedziałami wielkości zamiast liczb ścisle zdefiniowanych. Co więcej, specyfika parametrów mających wpływ na określenie optymalnego sposobu pogórniczego użytkowania ma charakter zbiorów rozmytych, w których ważny jest charakter zmian bez możliwości określenia wyraźnych granic, więc użycie rozmytych wielokryterialnych metod modelowania daje lepsze wyniki w porównaniu z innymi metodami. Ponieważ porównywanie parami i dokonywanie ocen za pomocą wielkości rozmytych daje większą zgodność z zastosowanymi parametrami, zbudowano model służący do wyboru optymalnego sposobu pogórniczego użytkowania z wykorzystaniem zbiorów rozmytych w procesie analizy hierarchicznej. Model został zastosowany jako analiza przypadku w kopalni odkrywkowej Sungun w północno-zachodnim Iranie. Dla tej kopalni optymalnym sposobem pogórniczego użytkowania okazała się rekultywacja leśna z pozyskiwaniem drewna. Końcowym wnioskiem jest stwierdzenie, że przy użyciu opracowanego modelu można określić optymalny sposób pogórniczego użytkowania dla odkrywki, co stanowi podstawowy parametr do określenia kosztów rekultywacji na etapie planowania eksploatacji odkrywkowej.