In this paper, we propose a novel approach to the development of green public policies. We emphasize the significance of the system of systems (SoSs) methodology, which concentrates on understanding and managing complex systems by contemplating their interdependencies and interactions as a single integrated system. Based on this perspective, we consider green public policy as a system interacting with the energy, health, pollutants, and economic systems of the SoSs. As a method of systematic structural analysis, we use both decision-making trial and evaluation laboratory (DEMATEL) and interpretive structural modeling (ISM) techniques to understand the relationships between the systems listed above. We provide a literature review on the application of these soft operation research (SOR) techniques. We note that SOR methods are suitable for the formulation of effective public policies. Using an example, we demonstrate the primary advantage of DEMATEL and ISM, which is the establishment of easily comprehendible causal relationships between the systems in the SoSs.

Purpose: The aim of the paper is to assist hospitality business, operating in a sharing economy model and responding to coronavirus disease-2019 (COVID-19) crisis. It is argued that the creation of a strategy to face COVID-19 crisis should be focussed on what the guests valued most. The paper focusses on the Airbnb service, which is the leading platform in accommodation inside the sharing economy, to explore the consumer profile and analyse its motivations to use hospitality service, based on socio-demographic characteristics and user experience.Design/methodology/approach: The research uses a questionnaire survey targeting tourists who have experience using the Airbnb service. A total of 380 valid responses were analysed with statistical package programme for the social sciences (SPSS), performing a multivariate variance analyses (MANOVA) and univariate analysis (UNIANOVA), which corresponds to five of the main motivations regarding Airbnb booking.Findings: The results show a motivation increase towards the sharing economy and benefits of the sharing economy for customers between 41 and 60 years of age. It was also observed that consumers with a monthly income below the average salary level are less keen to prefer the sharing economy philosophy. Controversially, the results also show that more than 80% of the guests do not want to share the room with people they are not related to.Originality/value: The paper contributes to the understanding of consumers' behaviour by discussing the potential of the accommodation sharing model for the post-COVID recovery of the hospitality sector.

Green contracting mechanisms are utilized to integrate sustainable and environmentally protective goals into business objectives. This study proposes a framework for the design of green contract mechanisms in forestry supply chain management. We assumed that there was an applicant for harvesting timber in a forest, and that the owner tried to evaluate different scenarios to design a green contracting mechanism. We also assumed that the owner of a forest cared about green goals, such as carbon dioxide absorption, in the forest. We regarded the interests of the parties, such as the profit of the applicant as well as the green goals of the forest owner. We used multi-attribute decision-making techniques such as the weighted sum, normalized weighted sum, TOPSIS, and VIKOR to evaluate the various scenarios. In the literature, another approach was taken to solve a similar problem based on multi-objective techniques and the Pareto optimality concept. We compared the outcomes of the determined framework with the outputs of the previously employed methods. The recommended framework can provide more interpretable results since it considers the interests of different sides. The framework can assist businesses in designing contracts that promote sustainable operations and support compliance with the United Nations’ Sustainable Development Goals.