Sustainable development is in many ways the fundamental basis of tourism. The importance and role of sustainable tourism development in the 21st century is at the center of this paper on eco-certificates and green procurement in the hotel industry, within the field of the responsible or green economy. The green hotel economy implies the selection of accommodation in environmentally responsible hotels and other facilities, which are directing their business operations towards green procurement, eco-labeling, and the responsible economy. This paper includes quantitative research of the attitudes of 506 international tourists, who expressed their views on their needs regarding eco-hotels and the green economy in the hotel industry. This research also included the collection of data on green (responsible) businesses by surveying 100 hotels situated in the capitals of southern Europe. Comparing results from hotels with the needs of tourists in terms of the green economy in the hotel industry, significant results were obtained that contribute to sustainable tourism development.

In this research paper, various impacts on economic sustainability of small and medium-sized companies are analyzed. This research determined a research gap, by defining a statistically significant difference in business performance between SMEs (small and medium sized businesses) with their own logistics capacities and those which decided to outsource capacities. Impacts of key business factors were measured by quantitative research by using linear regression, on a sample of 340 SMEs from Serbia. These factors are related to market aspects, SME position within a supply chain, but also to internal aspects of the company itself. Empirical research findings suggested that ownership of logistics capacity can have an impact on economic sustainability of SMEs, measured through solvency and profitability. Future research regarding this topic can be diversified through efforts of internationalization of SMEs, or through comparison with large companies in terms of impacts on economic sustainability.

The paper deals with the analysis of the role of activities and characteristics of the manager as a factor in improving the strategic activity of a company. The survey included 327 managers of different levels who are employed in companies operating on the territory of the Republic of Serbia. Correlation analysis confirmed statistically significant relationships between observed activity variables and managerial characteristics and strategic action variables. The regression method confirmed that the variables communication and innovation and flexibility had the greatest influence on all analyzed variables of strategic action, while the variables of activity and characteristics of managers had the greatest importance on the variables of strategic decision making and quality of vision and mission. The aim of the presented research is to point out the importance of activities and characteristics of managers with the goal of business promotion, primarily through strategic action, and that they can be crucial for improving the market and competitive position of companies.

The paper presents a survey aimed at determining the influence of digital marketing communications on the creation of competitive advantages in the market. The results of the survey show that there are statistically significant relationships between the variables of digital marketing communications and the variables of sales promotion and customer relationships. Correlation analysis found that the level and quality of digital marketing activities have the greatest impact on variable positioning and differentiating products/services and strengthening the brand, Factor analysis has shown two-component solution, where first component gathers variables of the level and quality of digital marketing communications and the positioning and differentiating products/services, and other component gathers variables related to the consumer and the training of digital marketing staff, and a strong correlation was established between these two components. This research confirms the importance of digital marketing communications in the improvement of business and competitiveness, where the focus is on the competence and training of employees to perform higher quality digital marketing activities which put into the forefront the needs and demands of digital consumers.

This paper is exploring the dynamic success of an organization using the analytico - descriptive method in order to accomplish business process improvement by using new ways of work and/or improving work performance. That implies that an organization that tends to be successful encourages the need for changes, it motivates employees to initiate changes and be active members of the process development and organizational culture. The problem is observed through strategic surprises and possible discontinuities when considering strategic complexity as a reason for a management system to exist and function. To establish a successful management system that drives organization development towards success, the management needs to understand current business trends and set a motivating climate and culture in order to motivate all level personnel to contribute towards success. A quality system of progressive management covers more than the usual processes, initiatives for improvement and projects or documented procedures. .

This paper describes a model for estimating the condition of the shafts of turbines of the current generator in Hydropower plant Đerdap 2. For this purpose, an integral diagnostic approach was used. Based on the diagnostics of the...