Regional development improvement represents one of the key commitments which success is constantly being evaluated by the European Union, and is directly related to the position which the Republic of Serbia holds in the accession process. This science paper highlights the importance of regional development and the degree of regionalization in Serbia, as well as the level of influence for the four financial instruments of the European Union and their individual contribution to regional development and cooperation. The four described instruments, which have contributed most to the regional development of Serbia, are: „Community Assistance for Reconstruction, Development and Stabilisation“, the first and second „Instrument for Pre-Accession Assistance - IPA“ and „The European Support to Municipal Development Programme - EU PRO“.

Proper orientation and use of social networks, such as Facebook and Twitter, and their purposeful guidance in marketing efforts is a serious task that deserves complete commitment and analytical ability. Internet tools like Google Analytics are essential props when handling the direction, priority setting and the search for best methods in social networks, those that are used for Internet promotion enhancement. Regardless of the size, type or the enterprise activity, correctly interpreted details, found in a multitude of available data are the ones that decide and determine the course of promotional success.

Since tourism businesses are expected to survive and flourish in today's market, much effort was put into finding a well-adjusted business model. Modern business models are primarily digital marketing based and driven by technological development that facilitates communication. Due to the hyper-competitive market, the main issue remains to find the audience for presenting a product's value, which is the type of marketing that best suits the current habits of environmentally conscious tourists. This scientific study compared expert evaluations of ecotourism, sustainable tourism, and green tourism with user search interests on social media and search engines to improve marketing strategies for these environmentally conscious travel options. The research was conducted using worldwide data between 2021 and 2023. Results have shown significant differences in marketing trends, mainly based on region rankings derived from articles, social media, and search engines.

Blockchain technology, originally developed for cryptocurrencies like Bitcoin, is becoming a key factor in future financial and industrial management. This paper explores its potential for the transformation of these sectors through analysis of current research and projections of future trends. Blockchain is characterized by features such as decentralization, transparency, and security, which can significantly improve efficiency, reduce transaction costs, and improve data accuracy. In the financial sector, the technology enables the development of new digital assets, smart contracts, and decentralized applications, while in the industrial sector, it can improve logistics, supply chain tracking, and resource management. The paper also discusses the challenges in blockchain implementation, including technical, regulatory, and operational aspects. Through analysis and recommendations, the paper provides insight into how blockchain can shape the future of management and contribute to global economic and industrial changes.

Many companies tend to assume the public's view of their business by projecting their own, particularly positive, opinion onto the public's opinion. That is especially alarming considering how many results of previous public opinion surveys indicate that companies with a tendency to have a rising opinion of their actions on one side have a declining public opinion on the other. Because of this, serious companies invest in developing and using customized public relations strategies that fit their situation and needs best. These needs are met from the inside, via the specialized public relations departments, or from the outside, by doing business with professional agencies offering consulting services to various customers. No matter the choice between these two approaches, the primary method is always based on measuring current public opinion, creating specific actions and messages to particular audiences, and analyzing the results that would bring new information to improve future outcomes. In addition to following selected models and strategies, following the latest and most popular trends dictated by public opinion is also necessary. Highfunctioning corporate social responsibility is the most sought-after attribute modern societies expect from companies in a competitive marketplace. Out of the four pillars defining contemporary corporate social responsibility, through economic, legal, ethical, and philanthropic responsibilities, philanthropic awareness and actions are most precious for a company seeking to build a reputation founded on generosity and social consciousness.

The competent and experienced staff is one of the criteria for assessment the technical competence of the laboratory. This paper presents the AHP analysis of competent and experienced laboratory accreditation staff. The following sub-criteria were analyzed: training SRPS ISO 17025:2017, training ISO 9001, training staff to work on a particular machine using a valid method, responsibility, impartiality, confidentiality, authority and interpersonal cooperation of the laboratory staff. The criterion for competent and experienced staff should meet all the requirements for the technical equipment of the laboratory to submit an application for accreditation.