key: cord-1037164-mqxpy7em
authors: Ayyildiz, Ertugrul
title: Interval valued intuitionistic fuzzy analytic hierarchy process-based green supply chain resilience evaluation methodology in post COVID-19 era
date: 2021-10-20
journal: Environ Sci Pollut Res Int
DOI: 10.1007/s11356-021-16972-y
sha: fe5daaa65d72954cdb1664245a6c9860ac4de3c1
doc_id: 1037164
cord_uid: mqxpy7em

Supply chain organizations should calmly and cautiously take the most accurate and sustainable decisions quickly and put them into practice. It is obvious that traditional time series–based demand and supply planning approaches are insufficient to meet current business needs due to factors such as sharp changes in market and commercial dynamics, pandemics, and natural disasters on the management of green supply chains, especially these days. In the near future, there will be a need for more resilient supply chains with a flexible business models that are not affected by sudden changes and that can make sustainable decisions dynamically. Additionally, all stakeholders must act with a green supply chain approach to conduct production and service activities in a way that causes the least damage to nature. Companies must build more resilient supply chains by considering environmental sensitivities to compete in the market and ensure their continuity. In this context, the green supply chains should be evaluated according to their resilience. For this purpose, Supply Chain Operations Reference (SCOR) model is extended with novel performance attributes to evaluate resilience of green supply chains in this study. The SCOR-embedded novel green supply chain resilience evaluation model is structured as a three-level performance attribute hierarchical structure. Then, the model is handled as a multi-criteria decision-making problem to determine importance of the performance attributes. Best Worst Method integrated Interval Valued Intuitionistic Fuzzy Analytic Hierarchy Process is used to determine the importance of performance attributes. Most important performance attributes are determined in each level of hierarchy. According to results, organizational factors play a key role to build more resilient supply chains. Especially, integrated systems are required for supply chain resilience.

Rapid industrialization has depleted natural resources and the emergence of environmental problems. Despite the limited amount of resources, the gradual increase in consumption and the world population and the deterioration of the ecological environment lead consumers, non-governmental organizations, official institutions, governments, and businesses to green thinking in the supply chain. Companies approached the supply chain management with the concept of green thinking and created green supply chain management to effectively manage supply chains considering the environment. While supply chains increase their efficiency and profitability, they also want to create awareness by minimizing their negative effects on the environment with green supply chain management.

Supply chain management is planning, coordinating, executing, and controlling the people and organizations constructing the supply chain, and their activities in line with the ultimate goals of the supply chain (Fox et al. 2001) . Supply chain management consists of four main stages: planning, procurement, production, and distribution (Rai et al. 2011) . Planning is the management of procurement, production, and demands. Procurement is the supply, storage, and management of production resources (raw materials). The production is the transformation of raw materials into final products. The Communicated by Philippe Garrigues. distribution consists of the storage of products, inventory management, customer order management, and delivery to the customer. Supply chain managers should adopt more environmental friendly approaches because of the laws and regulations enacted by governments regarding the recycling of consumed resources, competition conditions, and consumer pressures arising from the increase in environmental awareness. Green supply chain management integrates the environmental dimension with supply chain management by examining the environmental impact of supply chain management processes in stakeholders of supply chain (Yu et al. 2014) . From this perspective, managers adopt green supply chain management by transforming their supply chains into a more environmentally friendly structure to design less polluting production systems, minimize their waste, manage environmental risks, and act with social responsibility awareness.

Green supply chains are differentiating from traditional supply chains by their integration with an environmentalist approach. Green practices are essential elements of green supply chain management (Sarkis 2003) . With green practices, faster action can be taken, high flexibility is provided, and environmental factors are prioritized in supplier selection and logistics activities, and resources are used effectively. Therefore, while purchasing the raw materials and supplies required for production in the green supply chain, raw materials and supplies that cause the least harm to the environment are preferred, and the environmental impacts that occur during the production and transportation of these raw materials and supplies are minimized.

Green supply chain management protects the environment. The main purpose is to purify logistics and supply chain activities and the value process created for each service from the negative effects of all kinds of wastes such as excessive resource use, excessive carbon emissions, chemicals, and hazardous materials. Effective green supply chain management can reduce the environmental impacts of industrial activities, and while doing this, it also considers factors such as quality, cost, energy efficiency, and supply chain resilience. Resilience must be taken into consideration while developing environmental sustainability strategies because of organizational goals (Mohammed 2020) . Resilience leads to more stable supply chains (Rajesh 2021) . Supply chain resilience plays a key role in shifting companies toward engaging in both environmental management and sustainable development (Ji et al. 2020) . Resilience and environmental concern dimensions need to be addressed simultaneously in supply chain management (Mohammed 2020) . Thus, the supply chain both complies with environmental concerns and increases its long-term total profit. Long-term supply chain performance can be developed by considering competitive advantages of resilience and the integration of greenness with resilience for green supply chains (Mahmoudi et al. 2021) . Additionally, the strategy is critical as the ultimate goal of the enterprises is continuity and long-term profit. Companies should focus and develop supply chain management to gain a competitive advantage in the market. At this point, supply chain resilience becomes more important.

Supply chain resilience can be briefly defined as the strength of the supply chain to be affected by unexpected changes at the minimum level, to resist crises and to maintain its continuity despite changes. The continuity of the supply chain is directly related to the resilience of companies. Companies with high resilience contribute to constructing a more resilient supply chain and ensure the longevity of supply chain. Supply chain resilience becomes more important to cope with sudden variations, in the era of COVID-19 (SARS-Cov-2) pandemic (Barbieri et al. 2020) .

The COVID-19, which first appeared in Wuhan, China, and has recently spread worldwide, creates a deep concern worldwide with the pressure in international markets and high case numbers and death rates in all countries (Ayyildiz and Taskin Gumus 2021a). The epidemic caused economic fluctuations around the world which affected green supply chains as well as all supply chains. Supply disruptions and demand shocks due to the pandemic may cause global reactions. With the COVID-19 pandemic, 2020 has been a period in which supply chain risk management has emerged effectively. Various countries and companies have taken different measures and taken protective steps, but they have been insufficient. The difficulties experienced in supply chain management over the years can be summarized as demand, supply, stability of the distribution channel, employee scarcity, instant order tracking, geopolitical stagnation, free trade, supply chain permanence, and stable financial flow. With the COVID-19 pandemic, all these difficulties have arisen immediately, and supply chains have been broken at many points.

The COVID-19 has highlighted the environmental practices of green supply chains by emphasizing the importance of sustainable production and consumption. Management of green supply chain risks, preventing vulnerability and enhancing supply chain resilience, is essential in situations such as this pandemic and disaster. Supply chain resilience is affected by many factors. Depending on the changing demands of end consumers, these factors can change constantly. For example, consumers pay more attention to the environmental sensitivity of companies recently. So, supply chain resilience is expected to be associated with environmental-friendly activities. Additionally, governments also implement practices in green supply chain activities, and as a result of these practices, supply chains that support the green approach become more advantageous over their competitors. Proactive implementations need to be adopted for securing supply chain systems by handling core vulnerabilities of supply chain (Rajesh 2020) .

As a result of literature review, the following observations motivated this study. Evaluating resilience of green supply chains is not considered with comprehensive analysis in the current literature. A complete and detailed set of criteria for evaluating resilience of green supply chain is not studied in the supply chain literature. Furthermore, the COVID-19 effect on green supply chain management with respect to resilience of supply chain is not analyzed. Also, the resilience performance evaluation model for green supply chain is not seen in the literature. Hence, in this study, we present Supply Chain Operations Reference (SCOR)-embedded resilience evaluation model for the first time in the literature. This study aims to determine importance of performance attributes related to green supply chain resilience unlike the supplier selection literature. A hybrid decision-making methodology using BWM and IVIF-AHP is presented to understand effects of criteria on resilience in green supply chains. In this study, we focus on these gaps in the supply chain literature, and aim to answer the following research questions: (i) How can the SCOR model be extended to assess green supply chain resilience? (ii) Which factors are effective in the green supply chain resilience? (iii) What are the most important performance attributes on green supply chain resilience?

In this study, we evaluate the resilience of green supply chains in post COVID-19 era. We improve SCOR model with two novel level 1 performance attributes to meet green supply chains' requirement in today's world. The green supply chain resilience evaluation model is constructed as a three-level hierarchical structure to determine the resilience of supply chains. This model is handled as a MCDM problem. The inner levels of performance attributes are also presented in this study to make a more comprehensive evaluation. Importance weights of performance attributes for each level of structure are determined via Best Worst Method (BWM)-integrated Interval Valued Intuitionistic Fuzzy AHP (IVIF-AHP) methodology based on expert opinions.

According to a detailed MCDM literature review based on intuitionistic fuzzy sets, no study integrates IVIF-AHP with BWM. Therefore, we propose a novel solution approach involving BWM-integrated IVIF-AHP, which is developed for the first time to solve criteria weighting in MCDM problems. In addition, using the SCOR-embedded model for the first time for evaluating green supply chain resilience is one of the innovations of this study. Therefore, this study stands out in terms of both methodological and application novelties.

This study is organized as follows: Literature review about green supply chain is given in the "Related studies" section. The "The SCOR-embedded resilience evaluation model" section gives the proposed green supply chain resilience evaluation model. BWM-integrated IVIF-AHP methodology is explained with details in the "Proposed methodology" section. The "The weight determination" section presents the application of the proposed methodology to determine importance weight of performance attributes. Practical implications of this study are explained in the "Practical implications" section. The last section summarizes the conclusions and future directions of the study.

Green supply chain management and resilience of green supply chains are hot topics among researchers and academicians for a long time. Especially, in the last years, researchers include both resilience and greenness for supply chains to develop strategies for supply chain management. According to reviewed studies, it can be said that resilience factors must be included in evaluation models to construct more sustainable green supply chains. Also, green supply chain resilience-based studies usually focus on supplier selection. These studies evaluate different specific supply chains. Some remarkable studies are summarized as follows. Ahi and Searcy (2013) analyze definitions for both green and sustainable supply chain management. Twenty-two definitions are identified for green supply chain management. They emphasize the resilience focus as one of the seven characteristics of business sustainability (Ahi and Searcy 2013) . Business sustainability should be supported with the creation of resilient organizations throughout whole supply chains through integrated social, financial, and environmental systems (Bansal 2010) . Mari et al. (2014) develop goal programming model to optimize cost by considering supply chain resilience and sustainability. Rauer and Kaufmann (2015) focus on capabilities of green supply chains and emphasize resilience capabilities as one of three dynamic capabilities. Malek et al. (2017) develop a model to evaluate green supply chain resilience. Gray relational analysis is utilized to prioritize the criteria in the evaluation model. Tseng et al. (2018) analyze green supply chain management by MCDM-based methodology, and find resilience is one of the top-weighted aspect for long-term perspective. Fahimnia et al. (2018) examine the supply chain strategies. They show that green and resilient strategies are costly, but more resilient supply chains have long-term benefits, so building robust green supply is a good investment. Das and McClung (2020) propose a green and resilient supply chain design model that incorporates green practices with resilience planning for supply chain strategies. Elzarka (2020) uses lean, agile, resilient, and green (LARG) index to assess the leanness, agility, resilience, and greenness of fast-moving consumer goods supply chain in Egypt. The gaps and improvement opportunities for green supply chains are also highlighted. Xiong et al. (2020) focus on supplier selection problem. To determine the best supplier considering resilience and greenness, a hybrid MCDM method is utilized. Ramirez-Peña et al. (2020) emphasize the green supply chain paradigm connected to social aspects and resilience is one of the intrinsic factors of the shipbuilding supply chain. Mohammed (2020) explore the requirements and complementarities for resiliency and greenness in supply chains, specify the criteria for resiliency and greenness, and propose MCDM approach to solve the supplier selection problem with respect to resiliency and greenness. Trivellas et al. (2020) focus on green supply chain management implications for sustainable supply chain performance. Ji et al. (2020) analyze the roles of resilience and knowledge combination of supply chain in terms of the green supplier integration. Zavala-Alcívar et al. (2020) present a literature review to examine supply chain resilience and its effects on the supply chain sustainability. Negri et al. (2021) review the supply chain management literature in terms of sustainability and resilience and summarize the future research topics. Ghomi-Avili et al. (2021) design competitive green supply chain to construct more resilient supply chains using bi-level supply chain network design model. Sachin and Rajesh (2021) examine the sustainable supply chain practices' effects on financial performance of supply chains.

Supply chain resilience and green supply chain management are well-studied topics among researchers, though there are a limited number of studies that especially focus on green supply chain resilience, especially post COVID-19 era. Therefore, the green supply chain resilience evaluation model is proposed in this study. SCOR performance evaluation model is extended with novel performance attributes to construct the proposed model. Besides, three levels of performance attributes are defined and evaluated. To determine the weight of each performance attribute, the model is handled as a hybrid MCDM problem apart from previous works.

The supply chain is an organization with international components from different cultures. Supply chain management is a complex organizational process that needs synchronization of activities between stakeholders (Zimon and Madzík 2020). Therefore, the standard business model that can be used in every national or international supply chains is required. For this purpose, the Supply Chain Council presented the SCOR model to be used in supply chains to improve their effectiveness and to provide a process-based supply chain management strategies (Lockamy and Mccormack 2004 ). The SCOR model is an integrated business model presented with the understanding of supply chain management in line with these requirements. SCOR is the first reference model to be recognized as the cross-industry standard to perform effective supply chain management. SCOR is a set of best practices and benchmarking tools that help organizations improve their processes and gain a competitive advantage. It also references a model developed to be an industry standard. SCOR model is useful tool to describe activities of supply chains in operations management for both practice alike and research (Ayyildiz and Taskin Gumus 2021b) . The model provides meaningful results to analyze the supply chain performance (Müller 2019) . The model is continuously updating and detailing according to the needs of supply chains. Specifying the implemented processes in supply chains is required to create effectively an integrated management system .

Metrics and performance attributes are the main components of the SCOR reference model's performance part. Metrics are a standard measurement tool to determine the ability of supply chain to achieve strategies. Performance attributes are a group of metrics to determine and explain strategies and they cannot measure themselves. There are five key performance attributes in SCOR model which are reliability, flexibility, responsiveness, costs, and assets. Using at least one metric for each attribute is recommended to ensure a more accurate and balanced governance by the Supply Chain Council (Ntabe et al. 2015) . The supply chain performance evaluation should consider each of the components of supply chain from the warehouse of raw material to the point of end customer.

Performance attributes in the traditional SCOR model are determined according to the traditional supply chains' needs. Due to the rapid changes that have occurred in the especially last two decades, the effective supply chain management has become more challenging and competitive. This has prompted many companies to adopt modern supply chain management strategies (Mohammed 2020) . The supply chain concept can be used as an effectively assisting approach in decision-making and planning for highly complex industries (Baghizadeh et al. 2021) . Supply chain management means effective and unproblematic approach and coordination of tangible and intangible flows between all stakeholders toward the ultimate goals of the supply chain, such as maximizing profits, customer satisfaction, and minimizing costs (Mohammed et al. 2021) .

There are radical changes in the structure of supply chains as a result of globalization. So the supply chains have faced several changes and developments that make supply chains encounter new challenges (Mohammed 2020) . Supply chains have become more vulnerable to disruptions because of strategic sourcing and globalization (Mohammed et al. 2021) . Hence, the modern supply chains should be adopted to cope with these challenges to survive in the highly challenging market. Relationships between companies on the supply chain network are handled by the concept of supply chain integration. Managers should perform external supply chain integration by harmonizing external activities with their own business activities (Beheshti et al. 2014 ). The one purpose of supply chain integration is to increase supply chain resilience.

Supply chain resilience plays an important role in the success of stakeholders and supply chains (Tukamuhabwa et al. 2015) . Reducing the effects of risks on the supply chain and ensuring that the damage is repaired by responding with an acceptable time are among the most important benefits of supply chain resilience. Supply chain resilience can also be defined as an ability to overcome bottlenecks, power to overcome risks, and taking effective measures against risks. Increasing the resilience of the supply chain not only improves the cooperation between the partner companies in the supply chain, but also enables them to adapt to the changing conditions. Risk management should be approached from a holistic perspective. Risk management is not only concerned with managing external risks but also focusing on the risks that can be created by the supply chain within itself; on the other hand, it should also cover the risks within the whole supply chain. Agile supply chains are more resilient to risks. Agility means reconfiguring the system quickly against predictable changes (Bernardes and Hanna 2009) . Companies act with less agility when any change in customer demands exposes their suppliers to operational risk. Namely, low agility levels do not just affect themselves; they affect suppliers as well. Therefore, agility is an important concept for the supply chain.

Renewal of green supply chain management in today's challenging market, especially in the post COVID-19 era, is important to provide the continuity of supply chain. In this context, the performance of green supply chain should be evaluated in terms of resilience strategies. To make a comprehensive evaluation, the traditional SCOR model should be extended with respect to environmental concerns. For this purpose, new key performance attributes should be taken into consideration to make a more accurate supply chain resilience evaluation. All performance attributes should be elaborated in terms of green supply chain while evaluating the resilience of the supply chain. In this study, the new resilience-based performance attributes are determined and new attributes are integrated into the SCOR model. Namely, Organizational and Environmental are considered new performance attributes in the novel SCOR-embedded green supply chain resilience evaluation model proposed in this study. The novel resilience evaluation model is structured as a three-level hierarchical performance attribute structure to make a more detailed, holistic, and comprehensive green supply chain resilience evaluation model. The inner performance attributes are determined considering green supply chain resilience by both literature review and expert opinions. The SCOR-embedded green supply chain resilience evaluation model and its level 2 performance attributes are presented in Fig. 1 . The resilience evaluation model includes seven different level 1 performance attributes. "Organizational" an "Environmental" are novel attributes added to the traditional SCOR model to encounter green supply chain needs.

The performance of the supply chain in delivery is to deliver the right product at the right place, at the right time, in the right condition and packaging, with the right quality and the right document. Flexibility (PA-2)

The ability of the supply chain to respond to changes in the market to gain competitive advantage or to maintain enhance its competitiveness. Responsiveness (PA-3) The delivery speed of supply chain in providing products to customers. Cost Costs related to the stage of the supply chain. Assets Supply chain efficiency of managing whole organization's assets to meet demand. Organizational (PA-6) Organizational capabilities to increase the resilience of the supply chain by taking a holistic approach. Environmental (PA-7) Environmental impact of the supply chain and approach to addressing environmental issues.

Level 3 performance attributes are determined based on literature review. These attributes, which form the basis of our study to evaluate green supply chain resilience, are frequently used factors in previous studies based on supply chain resilience and/or green supply chain. Table 1 presents level 3 attributes and the studies that use level 3 performance attributes and their derivatives.

A three-level performance attribute hierarchy is constructed on the basis of SCOR model to determine importance of attributes to construct more resilient green supply chains. First, the BWM is employed by experts' evaluation to determine weights of level 1 attributes. BWM is used in this stage, because of the higher number of level 1 performance attributes. Then, IVIF-AHP is employed to determine the weights of both level 2 and level 3 performance attributes.

The flow of the proposed hybrid decision-making methodology is given in Fig. 1 . Rezaei (2015) developed the BWM as a powerful MCDM technique to solve complex decision-making problems. After, the BWM is widely employed to determine the criteria weights (Chen et al. 2020) . BWM needs less pairwise comparison than similar pairwise comparison-based techniques, such as AHP and ANP (Ecer 2021) . Hence, BWM provides convenience to the decision-maker and more consistent comparisons by reducing the number of pairwise comparisons (Luo et al. 2021) . The method becomes prominent with computation time and robustness of algorithm. BWM provides more accurate and reliable results than AHP (Chen et al. 2020) . BWM is utilized by many researchers to handle different problems. Ecer (2021) utilize BWM to make sustainability assessment of onshore wind plants. Chen et al. (2020) use BWM-integrated TOPSIS to analyze critical barriers for e-waste management systems. Tavana et al. (2021) propose hierarchical fuzzy BWM to determine weights of criteria to solve a sustainable supplier selection problem. Ayyildiz and Taskin Gumus (2021a, b) extend the SCOR model with two novel metrics related to the digitalization and first-level metrics are weighted by BWM. Huang et al. (2021) propose a Bayesian BWM and modified Ranking Organization Method for Enrichment Evaluations (PROMETHEE)-based airport resilience assessment model. Sen et al. (2021) examine the flood resilience of housing infrastructure system by BWM. Moslem et al. (2020) employed BWM to examine mobility choice alternatives for post COVID-19 era. The detailed steps of BWM are given below (Kheybari et al., 2019) :

Step1: The best (most important) and the worst (least important) criteria are determined.

Step3: Best-to-Others vector is constructed. The level of importance of the best criterion among each criterion is determined between 1 and 9. While 9 means the best criteria are absolutely more important than the other cri- The use of AHP method with intuitionistic fuzzy sets has attracted the attention of many researchers and has subsequently been applied to many application areas. In this section, the literature related to the adopted methodology is reviewed. Some remarkable articles based on AHP with intuitionistic fuzzy sets are given in Table 2 .

The usage of intuitionistic fuzzy sets in MCDM methodologies is introduced to the literature in the 2009. After that, researchers employ AHP under intuitionistic fuzzy environment for different subjects. The first related article is published in 2009. The annual distribution of articles using AHP based on intuitionistic fuzzy sets reviewed can be seen in Fig. 2 .

According to Fig. 2 , it can be said that the number of articles increases every year. The first article is published in 2009, followed by just one article for the next 6 years except 2010. Two articles are published in 2016, then the number of articles published increases, six articles are published in 2018, 2019, and 2020. Four articles are published in the first half of 2021.

Atanassov proposed the intuitionistic fuzzy sets as a generalized version of fuzzy sets. Intuitionistic fuzzy sets consist of both membership and non-membership functions, while Zadeh's theory includes only membership function (Ayyildiz and Taskin Gumus 2021b) . The sum of membership and nonmembership functions must be between 0 and 1. The hesitancy degree is determined by subtracting the sum of membership and non-membership functions from 1.

Definition 1: Intuitionistic fuzzy set Ĩ in given fixed set X can be given by:

defines the membership and non-membership of the element x ∈ X to Ĩ respectively. (Sun et al. 2017) Web service selection (Seker and Aydin 2020) Transportation system evaluation (Tooranloo et al. 2018) Supplier selection (Karaşan et al. 2020) Charging station site selection (Cebi and Ilbahar 2018) Warehouse risk assessment (Li and Zhang 2021) Customer satisfaction (Ouyang and Guo 2018) Municipal wastewater treatment project selection (Yu et al. 2021) Credit risk analysis (Beskese et al. 2018) Performance management (Verma and Chandra 2021) Security attributes evaluation (Karasan et al. 2018) Production strategies prioritization (Shekari et al. 2021) Tourism dimensions prioritization where Definition 3. Some basic arithmetical operations of two I V I F n u m b e r s (

are given as following (Aydin and Seker 2020): :

Based on the definitions and explanations above, the steps of the IVIF-AHP are given in the following:

Step 1: The pairwise comparison matrix is constructed by converting linguistic terms to IVIF numbers as given in Table 3 (Kahraman et al. 2020) .

Step 2: The consistency of the matrix is analyzed using the crisp values proposed by Saaty (1977) . Consistency ratio (CR) is calculated using the matrix consistency index (CI) (Ayyildiz and Taskin Gumus 2021b) :where max is the maximum eigenvalue of the decision matrix and n is the matrix order (Duleba and Moslem 2019). Then, CR is calculated (Solangi et al. 2019a) :

where RI is the Random Index and it depends on matrix order Saaty (1994) .

Step 3: Score of each element is determined.

Step 4: Interval exponential matrix is calculated.

Step 5: Priority vector is calculated for each criterion. Step 6: The possibility degree matrix is constructed.

Step 7: The unnormalized weights are calculated.

Step 8:The weights are normalized.

To determine the importance weight of each performance attribute, an expert group is formed based on their experience. Company managers, academicians, and logistics firms' managers are included in the expert group to evaluate performance attributes from different perspectives. Seven experts from different expertness, three academicians working in supply chain, two managers from different companies, and one expert from transportation sector are consulted to take their opinions. The Modified Delphi Method is utilized to consolidate expert opinions in decision-making process. The method accumulates the opinions of anonymous experts on a particular topic (Gumus 2009 ). Experts share their knowledge, expertise, and opinions until a consensus is achieved (Ayyildiz et al. 2020) . The method can summarize expert opinions up to 30 experts (Chang et al. 2008) . The steps of Modified Delphi are given in Fig. 3 .

The goal of Modified Delphi method is to reach a consensus on a particular subject by group thinking. To achieve a consensus, seven experts are consulted in this study. That is, the process progressed until a single group decision was obtained. Experts' weights are assumed as equal.

First, level 1 performance attributes are evaluated by experts. Experts determined PA-6: Organizational as the most important (the best) level 1 performance attribute and PA-5: Assets as the least important (the worst) level 1 performance attribute according to the Modified Delphi. Then, both the pairwise comparison between the bests with the other level 1 performance attributes and the pairwise comparison between the others with the worst are performed. The pairwise comparisons are given in Table 4 .

The importance weights of level 1 performance attributes are determined based on Table 4 via the mathematical model explained in step 5 of the BWM. The weights of level 1 performance attributes are given in Table 5 .

The value is determined as 0.057. To check the consistency of the proposed model, the consistency ratio is calculated (Moslem et al. 2020 ).

The consistency index value is determined based on Table 6 (Rezaei 2015; Omrani et al. 2020 ). If the consistency ratio is lower than 1, the matrix is determined as acceptable (Moslem et al. 2020) .

The consistency ratio is determined as 0.015 (0.057/3.73) in this study. So the results are determined as consistent.

(27) Consistency ratio = ζ Consistency index As can be seen from Table 5 , the most important level 1 performance attribute for SCOR-embedded green supply chain resilience model is found as PA-6: Organizational with 0.286. This attribute is followed by PA-2: Flexibility and PA-7: Environmental both with the weight of 0.171. The least important performance attribute in this study is determined as the PA-5: Assets as expected with 0.058 among seven different level 1 performance attributes.

Level 2 and Level 3 performance attributes are evaluated by the same expert. Again, Modified Delphi method is utilized to consolidate experts' opinions. Pairwise comparison matrices are constructed with linguistic terms given in Table 3 . Firstly, pairwise comparison matrices of level 2 performance attributes are constructed for each level 1 performance attributes. Tables 7, 8, and 9 present the pairwise comparisons of inner level 2 performance attributes for each level 1 performance attribute.

The matrices are analyzed for consistency. Inconsistent matrices are reevaluated by experts and they are reconstructed to be consistent. Table 10 shows consistency ratios for level 2 pairwise comparison matrices. The consistency ratios for PA-3: Responsiveness, PA-4: Cost, and PA-5: Assets cannot be calculated because when the matrix order is 2, the RI is zero and these matrices must be consistent (Dodd et al. 1993) .

After the matrices are determined as consistent, weights of level 2 performance attributes are calculated using IVIF-AHP. To determine the final weight of level 2 performance attributes, the determined weight by IVIF-AHP is multiplied by the corresponding level 1 performance attribute weight determined by the BWM. Table 11 presents the local and final weights of level 2 performance attributes.

As can be seen from Table 11 , the most important level 2 performance attribute for SCOR-embedded green supply chain resilience model is determined as PA-6.1: Cooperation with 0.1. This means that cooperation between all supply chain stakeholders plays a key role to make more resilient supply chains. This attribute is followed by the PA-6.2: Preparedness and PA-3.1: Operations both with the weight of 0.083. The least important level 2 performance attribute in this study is determined as the PA-4.2: Managerial (Cost) with the 0.021 among twenty level 2 performance attributes.

Pairwise comparison matrices of level 3 performance attributes are constructed for each level 2 performance attribute. Table 12 presents the pairwise comparisons of inner level 3 performance attribute for PA-1.2: Accuracy level 2 performance attribute as an example.

Then, the matrices are analyzed for consistency. Table 13 shows consistency ratios for level 3 pairwise comparison matrices.

The consistency ratios for the some matrices are left blank in Table 13 , because their matrix order is 2. As can be seen in Table 13 , all matrices are determined as consistent. Again, IVIF-AHP is applied to determine weights. To determine the final weight of level 3 performance attributes, the determined weight by IVIF-AHP is multiplied by the corresponding level 2 weight. Table 14 presents final weights of level 3 performance attributes.

If the level 3 performance attributes are focused on, PA-6.1.1: System Integration is the most important level 3 performance attribute with the highest importance rate of 4.6%. It can be said that integrated systems have more impact on the green supply chain resilience than other level 3 performance attributes. Then, PA-3.1.1: Operating Capacity, PA-6.1.2: Collaboration, and PA-2.3.3: Risk Reduction must be taken into consideration to develop more resilient strategies, with importance rates of 3.8%, 3.4%, and 3.1% respectively. Also, the least important sub-risk factors are obtained as PA-5.1.3: Strategic Stock and PA-4.2.2: Ethical Pricing with importance rates less than 5%.

In the case of PA-1: Reliability, PA-1.2.2: Defective Rate and PA-1.3.1: Trust are determined as the most important level 3 performance attributes. Their weights are very close to each other. So, supply chains should produce their output with minimum defective rate, and aim to increase their trust to make more resilient supply chains, especially during hard 

In terms of practical implications, this study presents a comprehensive set of criteria to evaluate green supply chain resilience. A useful source of information is provided to supply chain practitioners and managers who seek to implement strategies to improve resilience of chain within and between organizations. This framework would eventually lead to supply chain resilience measurement tool for supply chain practitioners and managers, which would assist to improve their success in very competitive market. Additionally, methodological framework is provided to practitioners and managers to assess and improve their resilience performance. Organizational and environmental factors are identified essential precursors to the implementation of green and resilience strategies of supply chains. The fact that green supply chains act together by making more organized decisions and that all the stakeholders of the chain are included in the decision processes are effective in increasing the durability of both the individual and the whole chain. More integrated systems can enable all the stakeholders of the supply chains to share information and products faster and more effectively, enabling them to be more prepared for unexpected situations. Cooperation between stakeholders also plays an important role in increasing the resilience of both the stakeholders and the entire chain. In addition, according to the opinions of the experts consulted, making preliminary preparations for challenging unexpected situations such as disasters and pandemics is one of the lessons that the COVID-19 pandemic teaches supply chains. Increasing operational capacity would enable supply chains to respond more quickly to increased demands in crisis situations, such as the COVID-19 pandemic. Thus, more resilient green supply chains can be built against changes in demand. Keeping the operation times as low as possible will ensure that the demands are met more effectively in limited times. Green supply chain managers should aim to reduce lead times, which are often defined as non-value adding activity. Additionally, this study proposes numerous areas which academician researchers could complete additional study and develop their future research agendas.

In globalizing world, green supply chains become more important than before. In this context, efficient supply chain management is required to maintain the profitability and continuity of the supply chains. Besides, the supply chain managers should consider environmental impacts and resilience of supply chain to construct a more robust supply chains when they decide about supply chain management. While the issues considered most critical to green supply chains are environmental sensitivity, efficiency, and cost control, the COVID-19 pandemic has highlighted the importance of resilience. Supply chains have experienced and continue to experience shocks and strains like never before with the COVID-19 pandemic. COVID-19 continues to have devastating effects on all supply chains globally. The chains that supply the raw materials and intermediate products they use in their products from the Far East feel these effects very intensely. On the other hand, COVID-19 is seriously changing the demand for products and services in all markets. The most important difference between the disruptions caused by the pandemic and the disruptions caused by other crises is that they are large, fast, and disruptive along all supply chains in terms of supply and demand. In addition to these changes observed in the short term, it is also necessary to evaluate the expected changes in both demand and supply in the medium and long term. Some of the important warnings that COVID-19 has given to green supply chains worldwide are the need to manage supply risks correctly and construct more resilient supply chain structures. Therefore, resilience of green supply chains should be evaluated more carefully and comprehensively.

The SCOR model that provides a standard methodology for managing supply chains can be used to evaluate organizational performance. The SCOR-embedded green supply chain resilience evaluation model is used in this study, as it successfully measures process performance and defines the supply chain in all its aspects, allowing for a comprehensive measurement and evaluation. Additionally, the SCOR model is extended with novel performance attributes to make a more comprehensive evaluation.

In this study, the green supply chain resilience evaluation is taken into consideration in post COVID-19 era. Firstly, the resilience evaluation model is constructed as a threelevel hierarchical performance attribute structure to present the SCOR-embedded resilience evaluation model. Then, a hybrid BWM-integrated IVIF-AHP methodology is proposed to determine the weights of each performance attribute in hierarchical structure. Experts are consulted to evaluate the performance attributes. The main contributions of this study are as follows: (1) SCOR model is adapted to resilience evaluation of green supply chain in COVID-19 era by adding new performance attributes; (2) the most significant performance attributes on the green supply chain resilience are determined and classified in hierarchical structure; (3) an expert group which consists of seven experts is formed to take their opinions about performance attribute, and expert opinions are consolidated via Modified Delphi method; (4) level 1 performance attributes are weighted by the BWM, their inner levels are weighted by the IVIF-AHP, and so the weight of each performance attribute is determined; (5) it is aimed that the proposed green supply chain resilience model and weighting method will be used by both public and private supply chains to improve their resilience strategies.

SCOR-embedded green supply chain resilience evaluation model can be used in different studies with different MCDM methodologies or heuristics. This model can be easily used in the supplier selection problem by using different performance attributes if necessary. The proposed method can also be applied in the evaluation of traditional supply chain resilience. The MCDM method presented in this study provides thoughtfulness, flexibility, and efficiency for decision-makers to use their subjectivity and preferences directly. The performance attributes used may differ according to the characteristics of the supply chains. Each supply chain can use this method by determining performance attributes suitable for its own characteristics while

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