SCIDAR - A Digital Archive of the University of Kragujevac

Lesson planning and the development of pedagogical documentation constitute integral components of educators’ responsibilities in the Republic of Serbia. Within the framework of the “Methodology of Teaching Mathematics” course, future mathematics teachers address these aspects, particularly by formulating daily lesson plans for mathematics classes in primary and high school education. Considering the proven benefits of cooperative learning in enhancing student achievements and fostering their...

The growing demand for passenger comfort and environmental protection, as well as reducing fuel consumption and exhaust emissions, drives the search for new, high-performance materials. Composite leaf springs, applied as part of elastic suspension systems and with the advantages of being strong and lightweight, with a high load-carrying capacity, are a possible method with which to achieve those goals. In this study, an epoxy thermoset was blended with 10–50 wt.% polysulfide rubber and reinfo...

Motor vehicles in transport, as one of the important sectors of the economy, emit a significant amount of carbon dioxide and other products in the form of exhaust gases, which are harmful to human health. The emission of exhaust gases from motor vehicles is limited by appropriate regulations in accordance with environmental goals, such as the Paris Climate Agreement. Reduced emissions and fuel (energy) consumption is mainly achieved by applying modern technologies for the production of intern...

Twenty N-substituted pyrrolo[3,4-c]quinoline-1,3-diones 3a-t were synthesized by a cyclization reaction of Pfitzinger's quinoline ester precursor with the selected aromatic, heteroaromatic and aliphatic amines. The structures of all derivatives were confirmed by IR, 1H NMR, 13C NMR and HRMS spectra, while their purity was determined using HPLC techniques. Almost all compounds were identified as a new class of potent inhibitors against hDHODH among which 3a and 3t were the most active ones wit...

In addition to learning technical aspects of website creation, students must connect different knowledge, think critically, seek more information, and approach their work from various perspectives. These requirements, or specified competencies, can be developed through providing and receiving peer feedback, which is confirmed as an efficient learning strategy in various empirical studies on different subjects. The aim of this research is to investigate the impact of peer feedback on students’...

Despite the growing prominence of STEM disciplines in contemporary society, relevant studies indicate a concerning trend: a decline in students' interest and engagement in these fields. This research included 1,045 students from four grammar schools in Serbia. The study utilizes a quantitative research design: data were collected through an online questionnaire. Key variables: end-of-term marks in STEM subjects, gender, parental education, family size, and place of residence were analyzed fol...

Product Lifecycle Management (PLM) provides a paradigmatic model that enables companies to operate more effectively in the face of shorter product lifecycles, global networking, and increasing complexity. However, despite strengthening the PLM initiative, companies still struggle to implement this concept. The limited results of current PLM implementations often stem from a lack of unique indicators or consistent methodologies that help companies prioritize their implementation efforts. This ...

Silver nanoparticles represent a potential solution for mitigating the negative effects of temperature stress on cereals. This study investigates the impact of silver nanoparticles on winter varieties of wheat and barley during the tillering phase, focusing on proline concentration, antioxidant activity and extract yield under winter field conditions. Silver nanoparticles (AgNPs) were synthesized using a green method with an aqueous extract of the plant Agri-monia eupatoria L. (fam. Rosaceae)...

The purpose of the conducted research is to examine the level and trends of liquidity ratio of entrepreneurs in the Republic of Serbia in the period from 2014 to 2023. The research was conducted on the basis of the aggregate data of entrepreneur operations in the Republic of Serbia, published by the Business Registers Agency within the Financial Statements Annual Bulletin. For the paper purposes, liquidity was measured by the current ratio, quick ratio, cash ratio and net working capital....