The pandemic caused by COVID-19 has had an impact on the relationships established between different actors in organisations. To deal with these changes, it is necessary to develop a resilience capacity that allows for the establishment of different patterns of relationships through a new management model. The application of circularity principles implies a radical change in stakeholder relations, breaking with the “end-of-life” concept existing in linear economies. Furthermore, circular economy can ensure resilience in supply chains, and it can be considered as a tool in uncertain environments. Therefore, the objective of this study is to analyse the association between the customer–supplier relationships with circular supply chains based on the intellectual capital-based view theory. External capital is a crucial factor for organisations, and it helps with building remarkable capabilities for the whole supply chain due to collaboration and cooperation. This research contributes with a systematic revision of the literature regarding circular supply chains and customer–supplier external capital, providing an exploratory model. Establishing a closer and effective relationship with customers and suppliers supposes a differentiating value and competitive advantages. Actors involved in the supply chain are essential in the implementation of circularity in organisations for reducing waste production and returning resources to the production cycle. Therefore, circular networks related to customers’ behaviour, sustainable supplier election and IT tools play a key factor in improving resilience in supply chains.

PurposeThis study aims to offer a research overview of circular food waste management, covering key themes and trends. It analyses state-of-the-art research in this field and proposes an agenda to guide future research.Design/methodology/approachThis study outlines bibliometric analysis from a sample of 349 articles with VOSviewer and SciMat software to identify research trend topics.FindingsThe findings reveal a substantial amount of interest in this field. The main research topics relate to the recovery processes and valorisation of food waste and its conversion into renewable and cleaner materials or energy sources, towards circularity. However, these processes require consideration of social aspects that facilitate their implementation, which are currently under-researched.Practical implicationsCompanies can target their circular food waste management by considering three key aspects. Firstly, the establishment of closer and more sustainable relationships with various stakeholders; Secondly, a regulatory framework and the support of institutions are both required for the correct implementation of circularity. Finally, what is not measured does not exist. It is therefore necessary to establish indicators to measure both the level of development of circularity in waste management and the fulfilment of the established objective.Originality/valueThis bibliometric analysis looks at the application of circularity principles in food waste management from a holistic perspective, considering different areas of knowledge.

The important influence that incremental innovation has, both on the organization’s results and on the development of disruptive innovations in a synergistic relationship of positive sum, makes it necessary to deepen its study. In the context of absorptive capacity, this paper aims to contribute to the construction of a specific model of routines for more efficient exploitation. The empirical study was carried out in a sample of Spanish manufacturing companies of the PITEC Panel. The results show the superiority of the market as a source of knowledge compared to other sources with more complex knowledge, but not adjusted to the needs of a minor improvement. In addition, the management of external knowledge is a process whose phases are interrelated, so the routines and resources used must contribute to enriching the external knowledge previously acquired and not be redundant. Therefore, that would mean an inefficient allocation of resources for obtaining and exploiting continuous innovation.

Purpose The purpose of this paper is to shed light on the state-of-the-art about sustainable tourism. Despite the significant growth of publications exploring sustainable tourism, the debate on the relationship between tourism and sustainability remains open. In addition, the sector faces the challenge of the 2030 Agenda, as the authors have not yet managed to curb environmental degradation and social disparities. This research needs to be comprehensively addressed to inform future steps and to identify sustainable tourism practices that will advance the goals of this action plan. Design/methodology/approach This study applies a mixed methodology, using a bibliometric analysis performed by VOSviewer and SciMat software of 311 articles from the Web of Science. In addition, it includes an in-depth analysis of trending research topics in the field during 2019 and 2020. Findings After 20 years of research on sustainable tourism, there is still significant dispersion of studied topics, frameworks and applications. The results show the evolution of research towards the study and measurement of sustainable change, social and cultural aspects and the development of responsible governance models. Research limitations/implications New stakeholder relationships models require a methodological and technological framework. Further progress in sustainable tourism guided by the 2030 Agenda demands the establishment of worldwide recognised measurement indicators and policy frameworks. Originality/value With a mixed methodological approach and a special focus on the sustainable development goals (SDGs), this paper provides a “state-of-the-art” update to sustainability research in tourism. The results obtained have been associated with their contribution to achieving SDGs.

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INTRODUCTION. An educational environment that facilitates student engagement and critical thinking is essential for the success of Education for Sustainable Development (ESD) according to the 17 Sustainable Development Goals (SDGs). This requires that the tools favour learning from a new approach, which involves a social component and takes into account the students’ soft skills. METHODOLOGY. The Service-Learning (S-L) for educational proposal establishes fruitful relationships with society, in which both parties benefit. This paper proposes the application of the S-L methodology to achieve a successful implementation of ESD. RESULTS. In line with Goal 11 (SDGs) ‘Sustainable Cities and Communities’, this proposal aims for students to contribute to making cities more inclusive, safe, resilient and sustainable. To this end, a S-L activity was carried out at the Rey Juan Carlos University with the participation of 140 students of the subject “Tourist Transport”. DISCUSSION. This work demonstrates the usefulness of the Service-Learning methodology in the transmission of values associated with environmental, social and economic sustainability. In the activity, the students provide a service of transferring values to society while improving their communication and teamwork skills.

In the context of potential absorptive capacity, the present work analyzes sources of knowledge through the adjustment between the typology of sources and innovative results. Different external sources can condition the later phases of knowledge absorption. In relation to external sources of knowledge, we enrich their treatment by considering other companies in the same group as deeper relationships. In addition, we analyzed the results regarding the generation of radical innovations with impact on income. The results show that company groups can reduce costs in the exchange of technological knowledge, not only to develop radical innovations but also to improve their economic performance. Furthermore, membership in a group allows a company to obtain a greater economic return when combined with assimilation resources.

The adaptation of the supply chain makes it an effective tool in the management of a circular economy, as it allows aspects of sustainability and regeneration to be incorporated into production. However, empirical evidence is still insufficient. In addition, the use of absorptive capacity theory provides a convenient context model that is adapted to the knowledge management required for the application of circularity principles. To study in depth the functioning of the circular supply chain, we use the dimension of exploitation of absorptive capacity, distinguishing between routines that allow adaptation to new production needs (technological knowledge) and new commercial needs (market knowledge). The empirical study was conducted on a sample of 9612 companies, divided into three levels of technology intensity manufacturing, from the PITEC panel using multivariate models. The results show that the operating routines associated with the use of production and logistics technologies developed in a circular fashion favor the development of new products. Similarly, a bidirectional knowledge flow is necessary. The first flow is toward the company with practices that allow a better understanding of the customer and their needs in the framework of the circular economy. The second flow would be toward customers, who need to be informed and educated through various marketing and communication activities to adapt their behavior to the principles of circularity.