SCIDAR Collection:

UTICAJ PRIMENE INFORMACIONIH SISTEMA NA PERSONALIZOVANO OBRAZOVANJE: EMPIRIJSKA ANALIZA

2026-10-15T12:22:38Z

Title: UTICAJ PRIMENE INFORMACIONIH SISTEMA NA PERSONALIZOVANO OBRAZOVANJE: EMPIRIJSKA ANALIZA Authors: Ružičić V. Abstract: The development and application of information systems (IS) in education enables a personalized approach to learning tailored to the individual needs, abilities, and interests of students. Modern digital technologies enable the collection and analysis of data on user progress, which helps to better understand learning styles and the dynamics of learning content adoption. Based on the collected data, the system can recommend appropriate teaching materials, tasks, and activities, thus enabling more efficient and flexible learning. Of particular importance is the application of artificial intelligence (AI), machine learning, and learning analytics, which enable adaptive learning and continuous progress monitoring. A study conducted on a sample of 160 students of the Faculty of Technical Sciences in Čačak, University of Kragujevac, showed that IS significantly improves motivation, understanding of teaching content and learning efficiency, while providing teachers with better insight into student progress and enabling better quality teaching planning. The results of the t-test analysis show that the mean value is statistically significantly different from the reference value (t(159) = 32.5; p < 0.05), which confirms the importance of the impact of the use of IS on the quality and personalization of the educational process. The continuous use of IS in the personalization of education represents a significant step towards the modernization of the educational system and the development of digital learning.

Koeficijenti prelaza toplote sa vertikalnih površina u zatvorenim prostorima

2026-10-08T07:36:18Z

Title: Koeficijenti prelaza toplote sa vertikalnih površina u zatvorenim prostorima Authors: Živković, Branislav; Vučković, Snezana Abstract: Prikazan je mehanizam prenosa toplote konvekcijom sa unutrašnjih vertikalnih površina (zidova) na vazduh u prostoriji i način njegovog izračunavanja. Izložen je pregled izraza za određivanje koeficijenata prelaza toplote sa unutrašnje površine zidova. Za usvojenu model-prostoriju i realne uslove eksploatacije zgrade, izračunate su vrednosti koeficijenata prenosa toplote konvekcijom, prema više izraza iz novije svetske literature. Korišćeni su i teorijski izvedene formule i izrazi dobijeni na osnovu eksperimentalnih istraživanja na modelima i realnim objektima. Ovaj rad je bio izložen na 24. kongresu KGH, novembra 1993, i štampan u zborniku radova za taj skup (gde je, tehničkom greškom, izostavljeno ime koautora Snežane Vučković). Preštampavmno ga iz zbornika zbog posebne zainteresovanosti za ovaj tekst pretplatnika "KGH" koji nisu bili no Kongresu, odnosno u prilici da nabave zbornik.

Selection and analysis of key occupational safety and health indicators: A case study in the foundry industry

2026-10-02T06:29:52Z

Title: Selection and analysis of key occupational safety and health indicators: A case study in the foundry industry Authors: Jovičić, Aleksandar; Veljković, Dejan; Mitrović, Anđelija; Baralić, Jelena Abstract: Selection of key performance indicators (KPI) in the field of occupational safety and health requires precise definition of measurable parameters which allow efficient monitoring of the level of employee protection and evaluation of the success of implemented preventive measures. In the foundry industry, which is characterized by high temperatures, use of heavy equipment, complex technological processes and the presence of hazardous and harmful materials, continuous monitoring of situation in the field of employee health protection is a significant basis for improving working conditions, reducing professional risks and increasing the level of employee safety and health. This paper presents the identification and analysis of key indicators of occupational safety and health through a case study conducted in a foundry in Serbia. Special attention was paid to the LTIFR (Lost Time Injury Frequency Rate), SR (Severity Rate) and AFR (Accident Frequency Rate) indicators, with the analysis of their values in the period 2018-2024, which allowed the quantitative assessment of workplace injury frequency and severity. The results indicate an increased level of professional risk in the observed foundry from the case study. The analysis established that the highest risk workplaces are connected with machine molding, grinding and final treatment of castings, while arms and eyes are the most frequently injured body parts. The obtained results emphasize the importance of preventive measures, education of employees, improvement of risk assessment, more consistent use of personal protective equipment and modernization of technological processes for the purpose of improving occupational safety and health.

Robot-assisted lathe machine servicing

2026-10-02T06:08:43Z

Title: Robot-assisted lathe machine servicing Authors: Vujičić, Vojislav; Milicevic, Ivan; Mijailović, Nenad; Dučić, Nedeljko; Aleksić, Veljko; Popović, Marko Abstract: This paper describes a simulation of an industrial robot-assisted lathe servicing process using ABB RobotStudio software. The objective of the simulation is to demonstrate how integrating a robot for material handling can improve productivity and ensure safer operation within a manufacturing environment. The first part of the paper outlines the procedure for importing 3D models of robots and the lathe into the simulation environment. Special focus is placed on defining the lathe's movable elements, such as its door, as well as a conveyor belt for moving finished parts outside the safety zone. Key operational parameters were established, including target positions for the robot (pick-up from the raw material storage, insertion into the chuck, and deposition onto the conveyor) and the robot's movement trajectory. Based on these, an optimized RAPID program was developed to control the robot and other moving components during the simulation. The final stage includes testing and visual evaluation of the entire process, confirming both the system's functionality and the robustness of the proposed automation solution.