Evaluation of barriers to circular supply chain implementations with the spherical fuzzy AHP method: A case study of battery industry

Abstract

The climate crisis, globalizing world, increasing production volumes, and competitive environment created by meeting rapidly changing customer needs and expectations jeopardize the sustainability of resources. Since the Industrial Revolution that started in the 1760s, a linear economy model driven by a 'take-make-dispose' has been adopted. As this model doesn't offer a sustainable solution for resources, a circular economy as a new economic model was suggested. Circular economy, put forward by environmental economists David Pearce and R. Kerry Turner, aims to use efficiently and effectively products, materials, and energy circulating throughout the supply chain. Containing many actors within, the supply chain has an important place for a circular economy with activities such as reverse logistics, remanufacturing, product design, product life cycle management, clean production, sustainable packaging, and vehicle routing. On the other hand, supply chains encounter many obstacles in adopting a new economic model because of becoming increasingly complex and operating overseas. This paper aims to determine the main barriers firms operating in Turkey may encounter while adapting to a circular supply chain and to offer useful information for decision-makers and managers. We identified nine main barriers by conducting a comprehensive literature review for that purpose. These barriers were analyzed in company manufacturing batteries for automotive and industrial groups by using spherical fuzzy AHP. According to the analysis results, lack of top management support is the most crucial barrier to circular supply chain applications. This study aimed to contribute to the literature by using the spherical fuzzy AHP method for the first time in solving the related problem.

Keywords

• Circular economy
• Supply chain
• Barriers
• Spherical fuzzy AHP

Döngüsel tedarik zinciri uygulamalarının önündeki engellerin küresel bulanık AHP yöntemi ile değerlendirilmesi: Akü sektöründe bir uygulama

Öz

Küresel iklim krizi, globalleşen dünya, artan üretim hacimleri ve hızla değişen müşteri beklentilerini karşılamanın yarattığı rekabet ortamı kaynakların sürdürülebilirliğini tehlikeye atmaktadır. 1760’lı yıllarda başlayan Sanayi Devriminden beri “al, yap, sat” mantığı ile işleyen doğrusal ekonomi modelinin kaynaklar için sürdürülebilir bir çözüm sunmaması, son yıllarda yeni bir ekonomik model arayışına sebep oldu. İlk olarak iki İngiliz çevre ekonomisti David Pearce ve R. Kerry Turner tarafından ortaya konulan döngüsel ekonomi kavramı; tedarik zinciri içerisinde dolaşımda olan ürün, malzeme ve enerjinin verimli bir şekilde kullanılmasını amaçlamaktadır. İçerisinde birçok aktör bulunan tedarik zincirleri bu yeni ekonomik modelde; tersine lojistik, yeniden üretim, ürün tasarımı, ürün yaşam çevrimi yönetimi, temiz üretim, sürdürülebilir paketleme, araç rotalama gibi faaliyetler ile önemli bir yere sahiptir. Fakat, giderek karmaşık bir yapıya dönüşen ve denizaşırı faaliyet gösteren tedarik zincirlerinin yeni bir modele uyum sağlamasında birçok engel ile karşılaşılmaktadır. Bu çalışmanın amacı, Türkiye’de faaliyet gösteren firmaların döngüsel tedarik zinciri uygulamalarında karşılaşabilecekleri temel engeller ile ilgili bir örnek uygulama ortaya koyarak, strateji ve planlama oluşturulmasında yöneticiler ve paydaşlar için faydalı bilgiler sunmaktır. Bu amaçla, kapsamlı bir literatür taraması yapılarak dokuz temel engel tanımlanmıştır. Bu engeller, otomotiv ve endüstriyel gruplarda akü üretimi yapan bir işletme üzerinde küresel bulanık AHP kullanılarak analiz edilmiştir. Analiz sonuçlarına göre üst yönetimin desteğinin eksikliği uygulamanın yapıldığı firmadaki döngüsel tedarik zinciri uygulamalarının önündeki en önemli engeldir. Bu çalışmada ilgili problemin çözümünde ilk defa küresel bulanık AHP yönteminin kullanılması ile literatüre katkı sağlamak amaçlanmıştır.

Anahtar Kelimeler

• Döngüsel ekonomi
• Tedarik zinciri
• Engeller
• Küresel bulanık AHP

References

1. [1] Zhijun F, Nailing Y. “Putting a circular economy into practice in China”. Sustainability Science, 2(1), 95-101, 2007.
2. [2] Esposito M, Tse T, Soufani K. “Is the circular economy a new fast‐expanding market?”. Thunderbird International Business Review, 59(1), 9-14, 2017.
3. [3] Sauvé S, Bernard S, Sloan P. “Environmental sciences, sustainable development and circular economy: Alternative concepts for trans-disciplinary research”. Environmental Development, 17, 48-56, 2016.
4. [4] Govindan K, Hasanagic M. “A systematic review on drivers, barriers, and practices towards circular economy: a supply chain perspective”. International Journal of Production Research, 56(1-2), 278-311, 2018.
5. [5] Roy T, Garza-Reyes JA, Kumar V, Kumar A, Agrawal R. “Redesigning traditional linear supply chains into circular supply chains–A study into its challenges”. Sustainable Production and Consumption, 31, 113-126, 2022.
6. [6] Saroha M, Garg D, Luthra S. “Key Issues and Challenges in Circular Supply Chain Management Implementation-A SystematicReview”. International Journal of Applied Engineering Research, 13(9), 91-104, 2018.
7. [7] Ghisellini P, Cialani C, Ulgiati S. “A review on circular economy: the expected transition to a balanced interplay of environmental and economic systems”. Journal of Cleaner Production, 114, 11-32, 2016.
8. [8] Tura N, Hanski J, Ahola T, Ståhle M, Piiparinen S, Valkokari P. “Unlocking circular business: A framework of barriers and drivers”. Journal of Cleaner Production, 212, 90-98, 2019.

9. [9] Saroha M, Garg D, Luthra S. “Identification and analysis of circular supply chain management practices for sustainability: a fuzzy-DEMATEL approach”. International Journal of Productivity and Performance Management, 71(3), 722-746, 2021.
10. [10] Urbinati A, Chiaroni D, Chiesa V. “Towards a new taxonomy of circular economy business models”. Journal of Cleaner Production, 168, 487-498, 2017.
11. [11] De Angelis R, Howard M, Miemczyk J. “Supply chain management and the circular economy: towards the circular supply chain”. Production Planning & Control, 29(6), 425-437, 2018.
12. [12] Farooque M, Zhang A, Thürer M, Qu T, Huisingh D. “Circular supply chain management: A definition and structured literature review”. Journal Of Cleaner Production, 228, 882-900, 2019.
13. [13] Kazancoglu I, Kazancoglu Y, Yarimoglu E, Kahraman A. “A conceptual framework for barriers of circular supply chains for sustainability in the textile industry”. Sustainable development, 28(5), 1477-1492, 2020.
14. [14] Ellen MacArthur Foundation. ‘‘Towards The Circular Economy’’. https://ellenmacarthurfoundation.org/towards-the-circular-economy-vol-1-an-economic-and-business-rationale-for-an (02.11.2022).
15. [15] Amiri M, Hashemi-Tabatabaei M, Ghahremanloo M, Keshavarz-Ghorabaee M, Zavadskas E. K, Salimi-Zavieh S. G. “Evaluating barriers and challenges of circular supply chains using a decision-making model based on rough sets”. International Journal of Environmental Science and Technology, 19, 7275–7296, 2022.
16. [16] Harvard Business Review. “Circular Supply Chains Are More Sustainable. Why Are They So Rare?’’. https://hbr.org/2021/06/circular-supply-chains-are-more-sustainable-why-are-they-so-rare (01.11.2022).
17. [17] Su B, Heshmati A, Geng Y, Yu X. “A review of the circular economy in China: moving from rhetoric to implementation”. Journal of Cleaner Production, 42, 215-227, 2013.
18. [18] Ayati MS, Shekarian E, Majava J, Wæhrens B. V. “Toward a circular supply chain: Understanding barriers from the perspective of recovery approaches”. Journal of Cleaner Production, 359, 1-18, 2022.
19. [19] Lahane S, Kant R. “Evaluating the circular supply chain implementation barriers using Pythagorean fuzzy AHP-DEMATEL approach”. Cleaner Logistics and Supply Chain, 2, 1-12, 2021.
20. [20] Forbes, ‘‘The Circular Supply Chain: A Push For Sustainability’’. https://www.forbes.com/sites/stevebanker/2021/06/29/the-circular-supply-chain-a-push-for-sustainability/?sh=3e21caa137c1 (01.11.2022).
21. [21] Sopha BM, Purnamasari D. M, Ma’mun S. “Barriers and Enablers of Circular Economy Implementation for Electric-Vehicle Batteries: From Systematic Literature Review to Conceptual Framework”. Sustainability, 14(10), 1-23, 2022.
22. [22] Pan SY, Du M. A, Huang IT, Liu IH, Chang EE, Chiang P. C. “Strategies on implementation of waste-to-energy (WTE) supply chain for circular economy system: a review”. Journal of Cleaner Production, 108, 409-421, 2015.
23. [23] Bressanelli G, Perona M, Saccani N. “Challenges in supply chain redesign for the Circular Economy: A literature review and a multiple case study”. International Journal of Production Research, 57(23), 7395-7422, 2019.
24. [24] Ada N, Kazancoglu Y, Sezer M. D, Ede-Senturk C, Ozer I, Ram M. “Analyzing barriers of circular food supply chains and proposing industry 4.0 solutions”. Sustainability, 13(12), 1-29, 2021.
25. [25] Mehmood A, Ahmed S, Viza E, Bogush A, Ayyub R.M. “Drivers and barriers towards circular economy in agri‐food supply chain: a review”. Business Strategy & Development, 4(4), 465-481, 2021.
26. [26] Luthra S, Sharma M, Kumar A, Joshi S, Collins E, Mangla S. “Overcoming barriers to cross-sector collaboration in circular supply chain management: a multi-method approach”. Transportation Research Part E: Logistics and Transportation Review, 157, 1-25, 2022.
27. [27] Kumar P, Singh RK, Kumar V. “Managing supply chains for sustainable operations in the era of industry 4.0 and circular economy: Analysis of barriers”. Resources, Conservation and Recycling, 164, 1-12, 2021.
28. [28] Hart J, Adams K, Giesekam J, Tingley DD, Pomponi F. “Barriers and drivers in a circular economy: the case of the built environment”. Procedia Cirp, 80, 619-624, 2019.
29. [29] Pathak R, Endayilalu A. “Circular economy: A perspective of Ethiopian textile sector”. International Journal Of All Research Writings, 1(11), 101-109, 2019.
30. [30] Mangla S. K, Luthra S, Mishra N, Singh A, Rana NP, Dora M, Dwivedi Y. “Barriers to effective circular supply chain management in a developing country context”. Production Planning & Control, 29(6), 551-569, 2018.
31. [31] Agyemang M, Kusi-Sarpong S, Khan SA, Mani V, Rehman ST, Kusi-Sarpong H. “Drivers and barriers to circular economy implementation: An explorative study in Pakistan’s automobile industry”. Management Decision, 57(4), 971-994, 2019.
32. [32] Vermunt DA, Negro SO, Verweij PA, Kuppens DV, Hekkert MP. “Exploring barriers to implementing different circular business models”. Journal of Cleaner Production, 222, 891-902, 2019.
33. [33] Geng Y, Doberstein B. “Developing the circular economy in China: Challenges and opportunities for achieving'leapfrog development'”. The International Journal of Sustainable Development & World Ecology, 15(3), 231-239, 2008.
34. [34] Gallaud D, Laperche B. Circular Economy, Industrial Ecology And Short Supply Chain. Hoboken, USA, John Wiley & Sons, 2016.
35. [35] Rizos V, Behrens A, Kafyeke T, Hirschnitz-Garbers M, Ioannou A. “The circular economy: Barriers and opportunities for SMEs”. CEPS Working Documents, 412, 1-22, 2015.
36. [36] Liu Y, Bai Y. “An exploration of firms’ awareness and behavior of developing circular economy: An empirical research in China”. Resources, Conservation and Recycling, 87, 145-152, 2014.
37. [37] Kirchherr J, Piscicelli L, Bour R, Kostense-Smit E, Muller J, Huibrechtse-Truijens A, Hekkert M. “Barriers to the circular economy: Evidence from the European Union (EU)”. Ecological Economics, 150, 264-272, 2018.
38. [38] Linder M, Williander M. “Circular business model innovation: inherent uncertainties”. Business Strategy and the Environment, 26(2), 182-196, 2017.
39. [39] Bouzon M, Govindan K, Rodriguez C. M. T. “Evaluating barriers for reverse logistics implementation under a multiple stakeholders’ perspective analysis using grey decision making approach”. Resources, Conservation and Recycling, 128, 315-335, 2018.
40. [40] Shahbazi S, Wiktorsson M, Kurdve M, Jönsson C, Bjelkemyr M. “Material efficiency in manufacturing: Swedish evidence on potential, barriers and strategies”. Journal of Cleaner Production, 127, 438-450, 2016.
41. [41] Masi D, Kumar V, Garza-Reyes J. A, Godsell J. “Towards a more circular economy: exploring the awareness, practices, and barriers from a focal firm perspective”. Production Planning & Control, 29(6), 539-550, 2018.
42. [42] Howard M, Hopkinson P, Miemczyk J. “The regenerative supply chain: a framework for developing circular economy indicators”. International Journal of Production Research, 57(23), 7300-7318, 2019.
43. [43] Zhu Q, Geng Y. “Drivers and barriers of extended supply chain practices for energy saving and emission reduction among Chinese manufacturers”. Journal of Cleaner Production, 40, 6-12, 2013.
44. [44] Li J, Pan S. Y, Kim H, Linn JH, Chiang PC. “Building green supply chains in eco-industrial parks towards a green economy: Barriers and strategies”. Journal of Environmental Management, 162, 158-170, 2015.
45. [45] De Jesus A, Mendonça S. “Lost in transition? Drivers and barriers in the eco-innovation road to the circular economy”. Ecological Economics, 145, 75-89, 2018.
46. [46] Lieder M, Rashid A. “Towards circular economy implementation: a comprehensive review in context of manufacturing industry”. Journal of Cleaner Production, 115, 36-51, 2016.
47. [47] Preston, F. “A Global Redesign? Shaping the Circular Economy”. Energy, Environment and Resource Governance, Chatham House, Londan, UK, EERG BP, 02, 2012.
48. [48] Kazançoğlu I, Sağnak M, Mangla S, Kazançoğlu Y. “Circular economy and the policy: A framework for improving the corporate environmental management in supply chains”. Business Strategy and the Environment, 30(1), 590-608, 2020.
49. [49] Azadnia AS, Onofrei G, Ghadimi P. “Electric vehicles lithium-ion batteries reverse logistics implementation barriers analysis: A TISM-MICMAC approach”. Resources, Conservation & Recycling, 174, 1-15, 2021.
50. [50] Farooque M, Zhang A, Liu Y. “Barriers to circular food supply chains in China”. Supply Chain Management: An International Journal, 24(5), 677-696, 2019.
51. [51] Defee CC, Esper T, Mollenkopf D. “Leveraging closed-loop orientation and leadership for environmental sustainability”. Supply Chain Management: An International Journal, 14(2), 87-98, 2009
52. [52] Levering R, Vos B. Organizational Drivers and Barriers to Circular Supply Chain Operations. Editors: De Boer L, Andersen PH. Operations Management and Sustainability: New Research Perspectives, 43-66, Cham, Switzerland, Palgrave Macmillan, 2019.
53. [53] Zhang A, Venkatesh VG, Liu Y, Wan M, Qu T, Huisingh D. “Barriers to smart waste management for a circular economy in China”. Journal of Cleaner Production, 240, 1-12, 2019.
54. [54] Shang C, Saeidi P, Goh CF. “Evaluation of circular supply chains barriers in the era of Industry 4.0 transition using an extended decision-making approach”. Journal of Enterprise Information Management, 35(4/5), 1100-1128, 2021.
55. [55] Ahuja J, Dawson L, Lee R. “A circular economy for electric vehicle batteries: driving the change”. Journal of Property, Planning and Environmental Law, 12(3), 235-250, 2020.
56. [56] Qazi AA, Appolloni A. “A systematic review on barriers and enablers toward circular procurement management”. Sustainable Production and Consumption, 33, 343-359, 2022.
57. [57] Kurdve M, Zackrisson M, Johansson MI, Ebin B, Harlin U. “Considerations when modelling EV battery circularity systems”. Batteries, 5(2), 1-20, 2019.
58. [58] Kumar M, Raut RD, Jagtap S, Choubey VK. “Circular economy adoption challenges in the food supply chain for sustainable development”. Business Strategy and the Environment, 32(4), 1334-1356, 2023.
59. [59] Sharma YK, Mangla SK, Patil PP, Liu S. “When challenges impede the process For circular economy-driven sustainability practices in food supply chain”. Management Decision, 57(4), 995-1017, 2018.
60. [60] Ritzén S, Sandströma GÖ. “Barriers to the Circular Economy-integration of perspectives and domains”. Procedia Cirp, 64, 7-12, 2017.
61. [61] Chai J, Liu JNK, Ngai EWT. “Application of decision-making techniques in supplier selection: A systematic review of literature”. Expert Systems with Applications, 40(10), 3872-3885, 2013.
62. [62] Kabir G, Sumi RS. “Power substation location selection using fuzzy analytic hierarchy process and PROMETHEE: A case study from Bangladesh”. Energy, 72, 717-730, 2014.
63. [63] Srichetta P, Thurachon W. “Applying fuzzy analytic hierarchy process to evaluate and select product of notebook computers”. International Journal of Modeling and Optimization, 2(2), 168-173, 2012.
64. [64] Zadeh LA. “Fuzzy Sets”. Information and Control, 8, 338-353, 1965.
65. [65] Zadeh LA. “The concept of a linguistic variable and its application to approximate reasoning-I”. Information Sciences, 8, 199-249, 1975.
66. [66] Sambuc R. Fonctions And Floues: Application A L'aide Au Diagnostic En Pathologie Thyroidienne. Doctoral Dissertation, Faculté de Médecine de Marseille, Marseille, France, 1975.
67. [67] Jahn KU. “Intervall‐wertige mengen”. Mathematische Nachrichten, 68(1), 115-132, 1975.
68. [68] Grattan‐Guinness I. “Fuzzy membership mapped onto intervals and many‐valued quantities”. Mathematical Logic Quarterly, 22(1), 149-160, 1976.
69. [69] Atanassov K. “Intuitionistic fuzzy sets”. Fuzzy Sets and Systems, 20(1), 87-96, 1986.
70. [70] Yager RR. “On the theory of bags”. International Journal of General System, 13(1), 23-37, 1986.
71. [71] Atanassov K. “More on ntuitionistic fuzzy sets”. Fuzzy Sets and Systems, 33(1), 37-45, 1989.
72. [72] Smarandache F. “Definition of Neutrosophic Logic - A Generalization of the Intuitionistic Fuzzy Logic”. EUSFLAT Conference, Zittau, Germany, 10-12 September, 2003.
73. [73] Garibaldi JM, Ozen T. “Uncertain Fuzzy Reasoning: A Case Study in Modelling Expert Decision Making”. IEEE Transactions on Fuzzy Systems, 15(1), 16-30, 2007.
74. [74] Torra V. “Hesitant fuzzy sets”. International Journal of İntelligent Systems, 25(6), 529-539, 2010.
75. [75] Yager RR. “Pythagorean fuzzy subsets”. Conference of the North American Fuzzy Information Processing Society-NAFIPS, Edmonton, Canada, 24-28 June 2013.
76. [76] Cuong BC, Kreinovich V. “Picture fuzzy sets”. Journal of Computer Science and Cybernetics, 30(4), 409-420, 2014.
77. [77] Yager RR. “Generalized orthopair fuzzy sets”. IEEE Transactions on Fuzzy Systems, 25(5), 1222-1230, 2016.
78. [78] Gündoğdu FK, Kahraman C. “Spherical fuzzy sets and spherical fuzzy TOPSIS method”. Journal of İntelligent & Fuzzy Systems, 36(1), 337-352, 2019.
79. [79] Kocakaya K, Engin T, Tektaş M, Aydın U. “Türkiye’de bölgesel havayollari için uçak tipi seçimi: küresel bulanık AHP-TOPSIS yöntemlerinin entegrasyonu”. Intelligent Transportation Systems, Institute of Science, 4(1), 27-58, 2021.
80. [80] Ayyıldız E, Taşkın A. “A novel spherical fuzzy AHP-VIKOR methodology to determine serving petrol station selection during COVID-19 lockdown: A pilot study for Istanbul”. Socio-Economic Planning Sciences, 83, 1-16, 2022.
81. [81] Gündoğdu FK, Kahraman C. “A novel spherical fuzzy analytic hierarchy process and its renewable energy application”. Soft Computing, 24(6), 4607-4621, 2020.
82. [82] Yılmaz MK, Kuşakçı AO, Aksoy M, Hacıoğlu Ü. “The evaluation of operational efficiencies of Turkish airports: An integrated spherical fuzzy AHP/DEA approach”. Applied Soft Computing, 119, 1-16, 2022.
83. [83] Gündoğdu FK, Kahraman C. “Spherical fuzzy analytic hierarchy process (AHP) and its application to industrial robot selection”. Intelligent and Fuzzy Techniques in Big Data Analytics and Decision Making: Proceedings of the INFUS 2019 Conference, Istanbul, Turkey, 23-25 July 2020.
84. [84] Ayyıldız E, Gümüş AT. “A novel spherical fuzzy AHP-integrated spherical WASPAS methodology for petrol station location selection problem: a real case study for İstanbul”. Environmental Science and Pollution Research, 27(29), 36109-36120, 2020.
85. [85] Mathew M, Chakrabortty RK, Ryan MJ. “A novel approach integrating AHP and TOPSIS under spherical fuzzy sets for advanced manufacturing system selection”. Engineering Applications of Artificial Intelligence, 96, 1-13, 2020.
86. [86] Oztaysi B, Cevik SO, Kahraman C, Otay I. “Industry 4.0 project prioritization by using spherical fuzzy analytic hierarchy process”. In Developments of Artificial Intelligence Technologies in Computation and Robotics: Proceedings of the 14th International FLINS Conference (FLINS 2020), Cologne, Germany, 18-21 August 2020.
87. [87] Demir E, Turan H. “An integrated spherical fuzzy AHP multi-criteria method for Covid-19 crisis management in regarding lean six sigma”. International Journal of Lean Six Sigma, 12(4), 859-885, 2021.
88. [88] Doğan O. “Process mining technology selection with spherical fuzzy AHP and sensitivity analysis”. Expert Systems with Applications, 178, 1-9, 2021.
89. [89] Kieu PT, Nguyen VT, Nguyen VT, Ho TP. “A Spherical Fuzzy Analytic Hierarchy Process (SF-AHP) and Combined Compromise Solution (CoCoSo) Algorithm in Distribution Center Location Selection: A Case Study in Agricultural Supply Chain”. Axioms, 10(2), 1-13, 2021.
90. [90] Nguyen PH, Tsai JF, Dang TT, Lin MH, Pham HA, Nguyen KA. “A Hybrid Spherical Fuzzy MCDM Approach to Prioritize Governmental Intervention Strategies against the COVID-19 Pandemic: A Case Study from Vietnam”. Mathematics, 9(20), 1-26, 2021.
91. [91] Buran B, Erçek M. “Public transportation business model evaluation with Spherical and Intuitionistic Fuzzy AHP and sensitivity analysis”. Expert Systems with Applications, 204, 1-12, 2022.
92. [92] Candan G, Toklu MC. “Sustainable industrialization performance evaluation of European Union countries: an integrated spherical fuzzy analytic hierarchy process and grey relational analysis approach”. International Journal of Sustainable Development & World Ecology, 29(5), 387-400, 2022.
93. [93] Gocer F, Sener N. “Spherical fuzzy extension of AHP-ARAS methods integrated with modified k-means clustering for logistics hub location problem”. Expert Systems, 39(2), 1-21, 2022.
94. [94] Hamal S, Senvar O. “A novel integrated AHP and MULTIMOORA method with interval-valued spherical fuzzy sets and single-valued spherical fuzzy sets to prioritize financial ratios for financial accounting fraud detection”. Journal of Intelligent & Fuzzy Systems, 42(1), 337-364, 2022.
95. [95] Mangla SK, Kazançoğlu Y, Yıldızbaşı A, Öztürk C, Çalık A. “A conceptual framework for blockchain-based sustainable supply chain and evaluating implementation barriers: A case of the tea supply chain”. Business Strategy and the Environment, 31, 3693-3716, 2022.
96. [96] Unal Y, Temur GT. “Sustainable supplier selection by using spherical fuzzy AHP”. Journal of Intelligent & Fuzzy Systems, 42(1), 593-603, 2022.
97. [97] Menekşe A, Akdağ HC. “Information technology governance evaluation using spherical fuzzy AHP ELECTRE”. In Intelligent and Fuzzy Techniques for Emerging Conditions and Digital Transformation: Proceedings of the INFUS 2021 Conference, Istanbul, Turkey, 24-26 August 2021.
98. [98] Nebati EE, Ayvaz B, Kusakci AO. “Digital transformation in the defense industry: A maturity model combining SF-AHP and SF-TODIM approaches”. Applied Soft Computing, 132, 1-23, 2023.
99. [99] Abdul D, Wengi J, Sameeroddin M. “Prioritization of ecopreneurship barriers overcoming renewable energy technologies promotion: A comparative analysis of novel spherical fuzzy and Pythagorean fuzzy AHP approach”. Technological Forecasting and Social Change, 186, 1-16, 2023.
100. [100] Oztaysi B, Onar SC, Kahraman C. “A dynamic pricing model for location based systems by using spherical fuzzy AHP scoring”. Journal of Intelligent & Fuzzy Systems, 39(5), 6293-6302, 2020.
101. [101] Duleba S, Kutlu FK, Moslem S. “Interval-Valued Spherical Fuzzy Analytic Hierarchy Process Method to Evaluate Public Transportation Development”. Informatica, 32(4), 661-686, 2021.
102. [102] Singer H, Özşahin Ş, “Prioritization of laminate flooring selection criteria from experts’ perspectives: a spherical fuzzy AHP-based model”. Architectural Engineering and Design Management, 18(6), 911-926, 2022.
103. [103] Buyuk AM, Temur GT. “Food waste treatment option selection through spherical fuzzy AHP”. Journal of Intelligent & Fuzzy Systems, 42(1), 97-107, 2022.
104. [104] Nguyen PH. “Agricultural supply chain risks evaluation with spherical fuzzy analytic hierarchy process”. Computers, Materials & Continua (CMC), 73(2), 4211-4229, 2022.
105. [105] Jawad M, Naz M, Muqaddus H. “A multi-criteria decision-making approach for portfolio selection by using an automatic spherical fuzzy AHP algorithm”. Journal of the Operational Research Society, 75(1), 85-98, 2024.
106. [106] Saaty T, The Analytic Hierarchy Process. 1nd ed. New York, USA, McGraw-Hill, 1980.
107. [107] Chang C, Wu C, Lin C, Chen H. “An application of AHP and sensitivity analysis for selecting the best slicing machine”. Computers & Industrial Engineering, 52, 296-307, 2007.
108. [108] Mangla SK, Kumar P, Barua MK. “Risk analysis in green supply chain using fuzzy AHP approach: A case study”. Resources, Conservation and Recycling, 104, 375-390, 2015.