Entrepreneurship along with leadership can be understood as the process of influencing others in order to achieve organizational goals. Leadership is not only the aim of modern organizations, but it is also the means by which they achieve greater productivity and efficiency. There is a close mutual relationship between entrepreneurship and leadership because leadership appears as an essential component of entrepreneurship. Entrepreneurs must be able to set organizational goals, lead and motivate their employees, inspire them to perform tasks effectively and make difficult decisions, all of which logically require the possession of leadership epithets. One explanation for why employees accept the influence of a leader is that he/her possesses power. In addition to power, leadership encompasses a range of other instruments related to exerting influence such as motivation, communication, and ability to work in a team, maintaining interpersonal relationships, corporate culture, knowledge generation, emotional intelligence, conflict management etc. Many organizations have found that if they can best ensure that employees as individuals are productive, they must pay attention to the way of managing work groups and teams. Entrepreneurship is also associated with superior company performance. Entrepreneurs are first of all responsible for setting organizational goals...

The study in this paper sought to assess how the company's marketing initiatives influence the purchasing choices of students. By surveying 230 students from the Faculty of Economics in Belgrade and analysing their responses, the researchers evaluated various aspects of the company's marketing strategies and the students' buying behaviour. Descriptive statistics revealed that the variables related to updating content on social media and utilising sponsored advertisements had the most significant impact, along with the variable of making purchasing decisions. The results of the regression and correlation analysis established the existence of statistically significant relationships and the influence of the variables of the company's marketing activity on the variables of students' purchase decisions. Based on the regression model of influence, it was determined that the variables of the company's marketing activities had the greatest impact on the variable of making purchase decisions, with the variables of sponsored ads and updating content on social networks making the greatest individual contribution. A two-component solution was obtained by factor analysis, where the first component gathered all the variables of the company's marketing activities and the purchasing decision variable, while the second component gathered the other variables of the students' purchasing decisions. Between these two components, increasingly high correlation values were found, which only indicates that there is a certain degree of variability between the company's marketing activities and students' purchasing decisions. The research conducted in this study aimed to determine the extent to which social media marketing is beneficial for students in finding products and services they need, as well as how influential it is in their purchasing decisions. It underscores the importance for companies to integrate social media marketing activities and determine the most suitable types of social media marketing strategies.

This paper investigates the development and application of an integrated framework for the quantitative assessment of cyber resilience of network architectures in educational institutions. Resilience assessment criteria were identified and mapped to the NIST Cybersecurity Framework to cover key functional areas of cybersecurity, while the ISO 31000 standard was applied to assess disruption scenarios, including cyber-attacks and network infrastructure failures. The PIPRECIA-S method enables precise weighting of criteria based on expert assessments, and the H-SCRM methodology allows quantitative evaluation of network alternatives according to defined criteria and scenarios. The results show that the hybrid cloud-managed network architecture achieves the highest level of cyber resilience, while software-defined networking and traditional LAN architecture achieve lower global resilience index values. Sensitivity analysis confirms the stability of the ranking of alternatives and the robustness of the proposed model. The paper provides practical guidelines for improving network security and decision-making in educational institutions through an integrated approach to risk and resilience management.

The definition of a green economy is that it is an economy that aims to reduce risks to the environment and ecological resources, as well as to achieve sustainable development without destroying (polluting) the environment. Quality control, measurement and testing of products and services plays a key role in green economy. This paper explores the connection between metrology, quality and green economy principles.

Modern business is characterized by profound transformations arising from the processes of digitalization and the global transition to the principles of the green economy. Together, these two phenomena redefine the way organizations create value, manage resources, and achieve competitive advantages. At the same time, these dimensions of modern development represent the foundation of a new management paradigm in which top management plays a key role in shaping sustainability strategies and technological adaptation. The aim of this paper is to theoretically analyze and explore the relationship between digital transformation and the green economy, as well as to emphasize the role of top management in their integration. The paper demonstrates how digital technologies (AI, IoT, big data, blockchain) enable the implementation of green principles in corporate strategies. Special emphasis is placed on leadership competencies and decision-making models in the era of ecological and digital convergence. Starting from the concept of sustainable development, this paper examines and analyzes the interrelationship between digitalization, managerial leadership, and the green economy, with particular focus on the DIM–ZET evaluation model – an integra- 558 ”Challenges of Digitalization in the Green Economy” Belgrade, October 30th, 2025 ted framework linking digital maturity, innovation, and sustainable development. The model provides a comprehensive approach to measuring organizational readiness for digital–ecological transformation, making it a highly relevant tool for modern managers.