Journal of Management and Economic Studies

Ecological Footprint Efficiency of G7 Countries: An Integrated Slack-Based Measure Data Envelopment Analysis and ROC Analysis

Aydın ÖZDEMİR — 2026-03-19

The objectives of this study are to assess the efficiency of the ecological footprint of seven G7
countries (Canada, France, Germany, Italy, Japan, the United Kingdom and the United States), and to test the diagnostic performance of input and output variables in determining the efficiency status of the seven G7 countries. For these purposes, the study has a two-stage analysis design. In the first stage, the Input Orientation Slack-Based Data Envelopment Analysis (DEA) model was employed using three input variables (Investment by Asset, Labour Force Participation Rate and Total Energy Consumption) and two output variables (Ecological Footprint (undesirable) and Gross Domestic Product). In the second stage, ROC Analysis was conducted to assess the diagnostic performance of the input and output variables in determining the Efficiency Status of G7 countries. The dataset belongs to 2025 or the nearest year, and it is gathered from Enerdata.net, Global Footprint Network, and OECD. While the first stage of analysis design was conducted using the deaR package in the R project, the second stage was carried out using Inonu University Faculty of Medicine, Department of Biostatistics and Medical Informatics, Diagnostic Tests and ROC Analysis Software. According to the first stage of analysis design, it was determined that 4 out of 7 G7 countries are efficient (Germany, Italy, the United Kingdom and the United States), while the remaining three countries (Canada, France and Japan) were found to be inefficient. Besides, all four efficient G7 countries rank first, while Japan ranks last among the seven G7 countries. According to the second stage of analysis design, it was determined that i1: Investment by Asset input variable could distinguish the Efficiency Status with the cutoff points (21.723). Given that the ecological footprint efficiency of G7 nations has not been extensively investigated in current literature, this research is notable for utilising the Slack-Based Measure Data Envelopment Analysis and ROC Analysis to address this knowledge gap.

A Digital Maturity Model for Turkish Universities, Reflections from YÖKAK Institutional Self - Evaluation Reports

Elmira IRAJI — 2026-03-19

This study proposes a digital maturity (DM) model and delves into its reflections from Institutional Internal Evaluation Reports (KIDR) from Turkish Universities. The objectives are to:identify the dimensions relevant to a DM model for Turkish HEIs, extra ct DM indicators from KIDR reports, assess institutions’ DM levels based on indicators, and determine whether DM differs across the four domains; Leadership & Governance, Teaching & Learning, Research & Development, and Service to Society. We employed a mi xed method design consisting of qualitative content analysis and descriptive survey design. The study generates a DM model based on qualitative content analysis of already developed models. Using a 1–5-point rubric, all KİDR 2024 reports were analyzed with MAXQDA Analytics Pro. The maturity scores were entered into SPSS for descriptive and inferential statistics. The level of maturity on Leadership, Governance and Quality; Learning and Teaching; Research and Development; and Service to Society were compared statistically.

Solo Tourists' Experience-Sharing Tendency: Its Role on Well-Being

Yeliz GÜLER — 2026-03-19

This study aims to address a gap in the literature by examining how individuals with solo travel experience interpret their tendency to share experiences, the role of such sharing in others’ decisions to travel solo, and its contribution to their well-being within the framework of modern well-being theories. Adopting a phenomenological qualitative research design, the study focuses on Turkish tourists with solo travel experience. Data were collected through in-depth interviews with 22 participants and analyzed using descriptive analysis. Findings indicate that experience-sharing behavior supports the positive relations dimension of Ryff’s psychological well-being theory, as well as the social contribution, social integration, and social acceptance dimensions of Keyes’s social well-being theory. The results demonstrate that sharing solo travel experiences holds deeper meaning for the sharer and positively contributes to both individual well-being and others’ solo travel decisions, extending the solo travel experience beyond the journey itself.

One Plate Two Times: A Creative Fusion Between Tradition and Future

Hilal KESKİN — 2026-03-19

This study explores the impact of digitalization on local culinary cultures through the lenses of creative destruction and planned obsolescence. Utilizing a qualitative research design, semi-structured interviews were conducted with 10 participants from diverse age and gender groups. The collected data were analyzed using thematic content analysis via ATLAS.ti software. Six main themes emerged: The Meaning of Traditional Food, Perceptions of Technology, Planned Obsolescence and Creative Destruction, Manual Labor and Cultural Value, Fears about the Future of Digitalization, and the Coexistence of Tradition and Technology. Findings reveal that participants are not categorically resistant to technological transformation; rather, they emphasize the need to preserve emotional bonds, cultural memory, and traditional practices throughout the digital transition. The study argues that technological integration in the field of gastronomy should not be limited to functional efficiency but must also address sociocultural and ethical dimensions. The concept of creative synthesis is proposed as an alternative paradigm that promotes the coexistence of tradition and innovation, offering a sustainable path forward for safeguarding culinary heritage in the digital age.

The Impact of Organizational Justice on Intention to Leave and Organizational Health: An Application in Five-Star Hotel Businesses in Istanbul

Tuna DEMİRAY — 2026-03-19

This study aims to determine the effects of employees' perceptions of organizational justice on their intention to leave and organizational health in five-star hotel businesses in Istanbul. Organizational justice, developed on the basis of Adams' (1965) equity theory and conceptualized by Colquitt (2001) in three dimensions—distributive, procedural, and interactional justice—reflects employees' perceptions of being treated fairly, impartially, and respectfully in the workplace. Organizational health is considered an indicator of the overall functioning of the business, employee well-being, and sustainable performance. A correlational survey method was used in the research. The research population consists of employees working in five-star hotels operating in Istanbul. The sample consisted of 401 employees selected from this population using a convenience sampling method. Data were collected through a questionnaire form comprising scales for organizational justice, intention to leave, and organizational health; analyses were performed using correlation and simple linear regression analysis in the SPSS program. The research results show that as employees' perception of organizational justice increases, organizational health significantly improves and intention to leave decreases. The findings reveal that organizational justice has positive effects on employee commitment and job satisfaction; and that fair management practices strengthen the workplace climate and organizational health. Accordingly, it is recommended that hotel managers develop fair, transparent, and employee-centered management policies.

Why Do Gen Z Consumers Buy Green? The Roles of Environmental Concern, Skepticism, and Social Norms

Sri Astuti Pratminingsih — 2026-03-19

Drawing on a behavioral marketing perspective, this study examines the effects of environmental concern, green skepticism, and social norms on green purchase intention among Gen Z consumers. This study employs a quantitative research design using survey data collected from Gen Z consumers in Indonesia who have purchased or considered purchasing eco-friendly personal care products. Data were analyzed using multiple regression analysis with SPSS 25 to test the proposed hypotheses. The results indicate that environmental concern has a positive effect on green purchase intention, while green skepticism negatively influences consumers’ intention to purchase eco-friendly personal care products. In addition, social norms are found to positively influence green purchase intention. This study contributes to the green marketing literature by integrating positive, negative, and social factors. Practically, the findings highlight the need for firms to strengthen environmental communication and social influence to enhance green purchase intention among young consumers.

Iuliopolis: Religious, Commercial, and Social Life in the Byzantine Era

Durmuş GÜR — 2026-03-19

The ancient city of Iuliopolis, located in proximity to the Nallıhan district of Ankara and now largely submerged, has been subject to archaeological excavations between 2009 and 2025. Specifically, Church No. 1, the Eastern Necropolis, and the Larder structure have played a pivotal role in deciphering the multilayered structure of this era. The pithoi, a type of storage vessel, are indicative of the urban organisation of agricultural production, including viticulture and grain cultivation. Furthermore, the presence of African Red Slip Ware ceramics recovered from the fill layers provides further evidence for Iuliopolis's integration into the Mediterranean trade network, a phenomenon comparable to that observed in other major cities in and around Ankara. Collectively, these findings confirm that Iuliopolis was a developed city characterised by local production, extensive trade, and powerful religious authority, and that it was strategically located on an important transportation route.

The Influence of Brand Personality on Purchase Intention: The Case of Belcholat Premium Chocolate

Minh Thu Bui — 2026-03-19

The modern consumers no longer base their purchasing decisions solely on taste or packaging; they also expect brands to embody personalities that resonate with their own identities. This expectation is especially pronounced in the premium food sector, where emotional experiences and intangible values play a pivotal role. Most chocolate brands in Vietnam have yet to fully recognize the strategic importance of brand personality in fostering emotional connections with consumers. This study aims to analyze the impact of brand personality dimensions tested through Aaker’s five-dimensional brand personality framework on consumers’ purchase intentions toward the Belcholat chocolate brand. The research adopts both qualitative and quantitative methodologies, grounded in Aaker’s brand personality model and the self-congruity theory. Findings reveal that all five brand personality traits exert a positive influence on purchase intention, with Sincerity and Competence emerging as the most influential dimensions. This study contributes empirical evidence to the theoretical discourse on brand personality within the premium food industry and offers strategic implications for building high-end chocolate branding in the Vietnamese market.