Faculty Of Organizational Sciences Research Articles

ESPRIT adventure: Assessing hybrid fuzzy-crisp rule-based AI method effectiveness in teaching key performance indicators

Key performance indicators (KPIs) are a fundamental tool for understanding the outcomes of business policies. Teaching these indicators is conventionally accomplished through verbal lecturing using mathematical equations, accompanied by presentation graphics and tabular information representing the company's operational, financial, and strategic achievements. The conventional teaching method enables the student to understand what a KPI means and how it is calculated, however, it does not enable the student to understand easily how to interpret it. Here, a hybrid fuzzy-crisp rule-based AI system is presented and its effectiveness when applied with a group of management and organization students at the University of Belgrade, Faculty of Organizational Sciences, during the 2022/2023 academic year is evaluated. The potential of this tool is reflected in its ability to simulate adaptive and realistic business economic situations, its high interactivity and user-friendly interface, and intuitive graphical and tabular results that are easy to interpret enhanced with natural-language-inference-explanations. Univariate analysis along with some complementary statistical tests was used to examine students' satisfaction with the system and to distinguish between students who used the system, and students who attended conventional classes, both in terms of acquiring knowledge and retaining knowledge. In general, the results showed high students' satisfaction with the system. The scores obtained by the former group on the objective knowledge assessment test were on average significantly higher compared to those of the latter, proving the positive effect of the hybrid fuzzy-crisp rule-based AI teaching approach.

“Successful entrepreneurs, known for their commitment to honest business conduct, can play an instrumental role as mentors, guiding and motivating the youth.” – Interview with Professor Mladen J. Cudanov, Professor Sandra Jednak and Dr. Nedeljko Milosavljevic from Serbia, University of Belgrade

The Review of Economic Theory and Policy requested an interview from Professor Mladen J. Cudanov, Professor Sandra Jednak and Nedeljko Milosavljevic, PhD about the entrepreneurial activity in Serbia and the development path of the Serbian economy regarding the role of entrepreneurs. Mladen J. Cudanov is full professor at the Faculty of Organizational Sciences, University of Belgrade, Sandra Jednak is also full professor and dean at the Faculty of Organizational Sciences, University of Belgrade and Nedeljko Milosavljevic is the Director of the Center for Technology Transfer at the University of Belgrade.

Active Learning Impact in Lecture Delivery in The Software Patterns Course

This paper provides an analysis of the process of lecture delivery in the Software Patterns course at the Faculty of Organizational Sciences, University of Belgrade. The content of the course and the manner of knowledge transfer to students are described in detail. In order to improve the process of delivering lectures at this course, three types of research were conducted among students. At the end of the paper, the results and conclusions of the research are presented.

Example of Integration of Java GUI Desktop Technologies Using the Abstract Factory Pattern for Education Purposes

The integration of Java GUI desktop technologies (Swing and JavaFX), using the Abstract Factory pattern, is explained in this paper. An overview of the basic features of Swing and JavaFX technologies is given, as well as the design pattern concept with an emphasis on the Abstract Factory pattern. In our study example, we have shown how to integrate the existing software system based on the Abstract Factory Pattern and Swing GUI technology with JavaFX GUI technology in a relatively simple way. The integration aims to explain to the students of the Faculty of Organizational Sciences (FON), University of Belgrade, in the course Software Patterns, the application of software patterns in connecting different GUI technologies.

U susret izdanju monografije: "50 godina kvaliteta na Fakultetu organizacionih nauka, Univerziteta u Beogradu"

Fifty years in the development of the scientific field of quality at the Faculty of Organizational Sciences, University of Belgrade, in relation to the period of orgin of this field in the world, at the beginning of the last century, can be considered significant from the aspect of events and data that perhaps should have been recorded and systematized much earlier. Consistently remembering, transmitting and recording information about the most significant events will provide, for future generations, a "story" about the years of origin and development of the field of quality at this faculty. Aware of the possible loss of certain details related to certain events, and possibly their participants, a decision was made in support of writing a monograph, and the part related to development is published here with the aim of informing the wider scientific and professional public.

The impact of higher education students’ personality traits on susceptibility to specific gamification elements

This research aims to determine if higher education students with certain personality traits are susceptible to specific gamification elements in education like points, levels, rewards, and others. A quantitative survey was carried out with a sample of 382 students from the Faculty of Organizational Sciences, University of Maribor, Slovenia. A 10-term measure of the Five-Factor Model (FFM) called the Ten Item Personality Measure (TIPI) was used. Descriptive statistics were used for analyses of collected data. Based on sample means, t-tests were performed to compare population means for statements of gamification elements between groups. This research's significant findings reveal that students with specific personality traits are more susceptible to particular elements of gamification. For example, students with high expressed extraversion are more susceptible to elements like immediate feedback, verbal praises from the professors, regular progress, teamwork, and constant challenges. The research contributes to a more in-depth understanding of gamification elements and is valuable for practical application.
 
 Keywords: Big Five inventory; gamification; gamification elements; higher education; personality traits.

Designing an extended smart classroom: An approach to game‐based learning for IoT

This article presents a game-based learning model implemented in a smart learning environment. The goal is to determine students' interest, willingness to participate, and impressions about game-based learning, which takes place in interaction with the smart classroom. The educational game was designed and implemented by harnessing advanced web, mobile, Internet of Things (IoTs) technologies, and augmented reality and integrated into an e-learning ecosystem based on Moodle platform. The game aimed to test students' knowledge in the field of IoT. For the evaluation, an experiment was conducted within the IoT-related courses at the Faculty of Organizational Sciences, University of Belgrade. The results show that the proposed approach has a positive impact on the learning process and that the integration of educational games into common learning management systems is a good practice for extending common formal learning models. The proposed approach is expected to contribute to introducing smart learning environments into the learning process in higher education.

Haos u oku posmatrača - razotkrivanje jedne nazovikritike Srpskog citatnog indeksa

The article is a response to criticism published by Rajko Bukvić in Ekonomski vidici in the paper 'On quality and visibility of social and economic sciences of Serbia', more precisely in the section entitled Scandals directed by CEON/CEES: Does chaos rule in our (economic) periodic publishing? In this section, the author directly accuses CEON/CEES for producing chaos in social sciences in Serbia by "excluding" many journals from its database called the Serbian Citation Index (SCIndeks). According to the author, CEON/CEES, after the termination of the financial support by the Serbian ministry responsible for science, blackmailed journal publishers by accepting for indexation only those willing to pay a fee for content maintenance. The author also claims that excluding three journals published by the Faculty of Organizational Sciences (FON), University of Belgrade, was illegal and scandalous. He adds to his allegations against SCIndeks several other unfounded, less important issues, supported by some serious unwarranted ethical accusations against its publisher. In this response, it is demonstrated that all accusations are fabricated and malicious. The alleged exclusion of formerly indexed journals was explained as a fully justified action of "non-inclusion" of journals unwilling to pay the necessary service fee after the forced transition of SCIndeks's business model from a government-sponsored to the journals-sponsored ("diamond open access", Ševkušić, Kosanović, & Šipka, 2020). Also, the suspension of the journals published by FON was a legitimate action aimed at protecting SCIndeks from a publisher who turned out to be untrustworthy, as demonstrated by the act of concealing the blatant plagiarism in the PhD thesis of the current Minister of Finance in the Serbian Government. The decision was reinforced by the discovery of a history of publishing in predatory journals by many members of the journals' editorial boards, the Dean's Collegium, and the Faculty Council. The author of the criticism is unmasked as lacking not only the basic knowledge on scientometrics, but also research and ethic integrity.

Fostering students’ participation in creating educational content through crowdsourcing

ABSTRACTThis paper proposes and evaluates a model of crowdsourcing in microlearning that includes the balancing of collaborative learning and crowdsourcing mechanisms. The goal of the research is to implement a learner-centered approach through crowdsourced content creation and to improve the process and outcomes of learning. Crowdsourced content creation was accomplished through a collaborative project within a higher education institution. Micro-courses in the form of short video lessons were created by students and published on the Coursmos platform and a certain group of students attended these micro-courses. The evaluation was carried out at the Faculty of Organizational Sciences, the University of Belgrade on a sample of 71 students who created micro-courses and 74 students who attended these micro-courses. The results show that the developed model provides simple communication and collaboration among students, high level of their self-organization and satisfaction, efficient management of crowdsourcing network and collaborative knowledge building.

Development of an IoT system for students' stress management

This paper shows the development of an IoT system for students' stress management. The IoT system is developed in an open architecture and is an integral part of the educational ecosystem. The system is composed of two elements: the one that enables measurement of vital parameters for identifying stress in students, and the other for stress control. The system for stress control consists of a mobile health application featuring relaxation content. Such system should minimize the excitement and have an impact on reducing future stress. The IoT system for stress management was evaluated in a real environment, during students? thesis defense on Faculty of Organizational Sciences, University of Belgrade. The results show that time spent using mobile health application with relaxing content can reduce students? physiological arousal and excitement during thesis defense.

Development of an educational game based on IoT

Internet of Things (IoT) in combination with game based learning offers new possibilities to improve teaching and learning. Thispaper presents an example of using the IoT in education through the creation of an educational interactive game. An educational gamebased on the IoT has been developed. The developed system aims to motivate students to acquire and enhance knowledge in the field of IoT.The system is composed of a mobile application that serves as a controller for students, an administrative tool in the form of a webapplication used by the teachers, a set of assignments implemented within a smart educational environment, and a collection of web servicesused for integration of software components. The system is integrated with Moodle learning management system. The evaluation has beenconducted at the Faculty of organizational sciences, University of Belgrade, during the Summer school in Internet of Things. A group ofseven students played the game, solved the knowledge test, and gave their opinions on usefulness, ease of use, ease of learning andsatisfaction with the developed system. Results show that the game has a positive effect on students’ knowledge and attitudes, and thereforeis suitable for application within a blended learning environment.

Designing a course for smart healthcare engineering education

AbstractSmart healthcare is an emerging concept that relies on the synergy of various engineering concepts and intelligent technical innovations applicable to healthcare. Demand for smart healthcare engineers is anticipated to grow, hence, arising a need to educate profile engineers. The goal of this paper is to introduce an approach to designing a course for smart healthcare engineering education. Through the key topics of the course, students acquired new skills and knowledge from emerging technologies underlying smart healthcare. The proposed approach was evaluated at a graduate course at the Faculty of Organizational Sciences, University of Belgrade. The results indicate that there was a positive impact on the learning process as well as a positive learning experience.

Designing a course and infrastructure for teaching software‐defined networking

AbstractSoftware‐defined networking (SDN) is an emerging technology that allows efficient and flexible management of networking equipment through standard interfaces. In order to encourage the seamless adoption of this technology, a new approach for the education of network engineers should be established, shifting the focus from conventional vendor specific technologies toward the concepts of standardized network management. In this paper, we propose an approach for designing an SDN course where students are encouraged to learn how to design and manage software‐defined networks in general, rather than focusing on the specifics of one vendor in particular. In addition, deeper student involvement is achieved through the use of globally available Open APIs and open source software which are the backbone of the course. The approach was evaluated at the graduate studies at the Faculty of Organizational Sciences, University of Belgrade. The results indicate that the proposed approach can have a positive impact on the learning process, and in time hopefully serve as a stepping stone for the education of the new generation of network engineers.

English

This study assessed the possible relation between life goal aspiration/orientation, department affiliation, gender and career path preferences. For this study we used data from 364 freshmen from the Faculty of Organizational Sciences (FOS), University of Belgrade, with the intention to find out what their aspirations and career plans are. Studying at the FOS gives them opportunity to become entrepreneurs, as well as managers, so we wanted to examine whether their general life aspirations are related to their desired career plans. While results indicate that there is no substantial link between career preferences and life aspirations in this specific point of their life, we found that gender and department of study may have some impact on the career preferences.JEL Classification: I23, C80, C83, L26

Learning and Education Experience in System Dynamics of Management Students

Article describes experiences in the teaching of a modelling and simulation course for students at Faculty of Organizational Sciences. The course consists of time-continuous simulation based on System Dynamics (SD) and discrete event simulation (DES). It is held in the 3rd year of studies, at which point students have taken courses in mathematics, statistics, theory of systems, as well as organizational and economic courses. The final grade for the course is derived from the student's project and written exam. Students took part in an experiment where they had to solve a managerial decision problem supported by a simulation model. Experimental results were then analysed and discussed in the students' projects. Students' contributions were part of their final grade. The results show that students, taking the course of Modelling and Simulation, thought that application of the simulation model contributes to a greater understanding of the problem, the faster finding of solutions, and enhanced confidence of the participants. The results are explained and discussed using a learning model.

Enhancing formal e‐learning with edutainment on social networks

AbstractThis paper reports on the investigation of the possibilities of enhancing the formal e‐learning process by harnessing the potential of informal game‐based learning on social networks. The goal of the research is to improve the outcomes of the formal learning process through the design and implementation of an educational game on a social network and its integration with a learning management system (LMS) of an educational institution. As a proof of concept, a Facebook educational game that enables students to learn and test their knowledge was developed. Furthermore, the game was integrated with the Moodle LMS and the evaluation was performed within the e‐learning system at the Faculty of Organizational Sciences, University of Belgrade. The results show that the application of social network edutainment in an e‐learning ecosystem has a positive impact on both the students' results and their satisfaction with the learning process as a whole.

Using 3D Models for Improving Face Recognition

Face recognition algorithm Principal Component Analysis (PCA) has a significant performance drop when comparing photographs taken from different angle. In this paper a 3D model was used for improving that performance. Model enables us to transform the face image which is taken from certain angle to en face. Model has been tested against biometric database formed at the Faculty of Organizational Sciences. Image rotation based on the model was performed before matching with the en face images from the database. Study results show that algorithm precision on biometric verification and identification has been seriously improved.

It’s up to you: The Influence of Sports Participation, Academic Performances and Demo-Behavioral Characteristics on University students’ Life Satisfaction

This paper investigates university students’ life satisfaction by measuring six life satisfaction components (family life satisfaction, social life satisfaction, satisfaction with the university experience, satisfaction with oneself, satisfaction with the place of residence, satisfaction with the overall life) among different students’ groups. Life satisfaction is measured using Brief Multi-Dimensional Students’ Life Satisfaction Scale (BMSLSS). A cross-sectional approach was taken to examine differences among identified students’ groups according to: academic performance (by GPA and status of funding), demographic and behavioral characteristics (by gender, body mass index, smoking and alcohol consumption) and features related to physical activity (by weekly time spent in physical activity in hours and group of sport engaged in). Research is conducted among 507 students at the Faculty of Organizational Sciences, University of Belgrade, Serbia. Man Whitney and Kruskal Wallis test were performed for pairwise comparison using Bonferroni correction. The results show statistically significant differences in the following components: satisfaction with family life (within gender group), satisfaction with social life (within sex and smoking groups), satisfaction with the university experience (within sex, smoking, alcohol consumption, GPA and scholarship/funding status groups), satisfaction with oneself (within GPA, financial status, alcohol consumption and type of sport groups), satisfaction with the place of residence (within GPA, scholarship/funding status, time spent in physical activities and body mass index) and satisfaction with the overall life (within gender and alcohol consumption groups). This paper has both theoretical and practical influence on contemporary life satisfaction field of knowledge, particularly in university students’ population.

10.5937/skolbiz1-5993 = Opinions and behavior of students in social aspects of Internet use in Serbia and Slovenia

Rapid involvement of Internet infrastructure and services brought a lot of new products based on information and communication technologies. In the focus of world's social interest at this time are social networks and WikiLeaks and their abuse. In this paper authors analyze opinions and behaviour of students at Novi Sad Business School, Serbia, and Faculty of Organizational Sciences in Kranj, Slovenia. This research focuses on different kinds of abuse of social networks and WikiLeaks. Results are presented and analyzed according to the place where examinees study. Conclusions about the differences found between the above-mentioned two groups are compared to the social states and events in these 2 countries which officially separated 25 years ago.

Nonlinear Analysis and Geometric Function Theory

1 Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia 2Department of Mathematics, Bar-Ilan University, 5290002 Ramat-Gan, Israel 3 Department of Mathematics, Aligarh Muslim University, Aligarh 202 002, India 4 Faculty of Natural Sciences and Mathematics, University of Montenegro, 81000 Podgorica, Montenegro 5Mathematical Institute SANU and Faculty of Organizational Sciences, University of Belgrade, 11000 Belgrade, Serbia