Sustainable development goals are used as a guidance for strategies development on local, regional and national levels. The importance of including young people in this complex process is recognized in all relevant documents (i.e. Agenda 21), however it is not an easy task to elicit opinions and preferences from the youth. Furthermore, the assessment of the sustainable development goals itself presents a challenge for the noisy data and nonlinear relationships in data. Popular approach is fuzzy set models where expert knowledge is presented with comprehensible rules; however expert knowledge elicitation takes a long time too. Several studies proposed an adaptive neuro-fuzzy inference system approach that combines the fuzzy set theory to model expert knowledge with neural networks for inferring rules and membership functions from data to assess the sustainable development performance. We base our assumptions that ANFIS can be used to predict the importance of sustainable development pillars from the demographic data of young people. For this purpose, we have conducted an online survey on sustainable development goals opinions and importance of young people in Serbia. The sample of 386 respondents has been split into a training sample of 300 instances (to generate membership functions and fuzzy rules) and a testing sample of 86 instances to predict the importance of the three pillars. We have conducted a trace-driven simulation test to validate the results of the proposed ANFIS model. Results of the study provided insights into how the young people in Serbia assess the importance of sustainable development goals. Secondly, the results suggest that ANFIS can be applied to predict values of importance of the three sustainable development pillars with the relative error of Rel Err < 5%. It must be noted that the considered model could be further improved by using training samples with more data.

The goal of this research was to define the priorities in implementation of digital business model in travel agencies in Serbia, as despite many advantages of digitalization, the practice was still far from expected. Research conducted was based on two previously conducted studies: 1) Four dimensions of determinants published in Digitalization in Tourism Report, that were: 1. Opportunities; 2. Difficulties; 3. Motivations and 4. Obstacles, stated as relevant for successful implementation of a digital platform in tourist agencies; 2) Identified importance of this four dimensions and their determinants through research questionnaire conducted in travel agencies in Serbia. In this paper, the most important determinants for each dimension were elements used to establish AHP hierarchy for further evaluation using Fuzzy AHP numbers. Through evaluation, the most relevant determinants and dimensions were identified as support for future strategies in digital transformation.

t Many industrial incidents, which have taken place since the seventies of the last century onwards, have raised many questions and conclusions. These disasters have shown that it is a human, a key risk factor for the survival of all living on our planet. The very approach to the prevention and recovery system proved to be frivolous, careless, and full of holes, and as a result, we got the devastating consequences. After these incidents, the environmental awareness and acceptance of the domino effect, which they carried with them, arose. When an industrial accident occurs, it causes people's death and affects the economy, social stability, and endangering the environment and biodiversity. Therefore, in the prevention process and various laws and directives, with the development of technology, there is also the development of computer programs to anticipate possible hazards and speed up the repair of the problem when this happens.

In the context of growing concern over the global environment and related sustainability issues, the purpose of this research is to stimulate discussion about the Environmental Performance Index (EPI) and its necessary role not only in measuring postgraduate students' attitudes about EPI, and its nine categories underpinned, but also, their important role in the development of appropriate curriculum of programs that are about environmental management and sustainable development as well. Further on, the obtained results of the presented research in the paper broaden the understanding of the opportunities for not only the Republic of Serbia but every country as well, in using the EPI methodology as it has a wide applicability in improving environmental pillars of their future sustainability.

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