Dragan S. Markovic

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Original scientific paper This paper describes the development of assembly mate references within the Web-based Virtual Laboratory for collaborative learning in industrial design. Process concerns creation of basic geometric constraints for assembly work between distant students. It also analyses the combination of various software types for Computer-Aided(More)
The method of headspace solid phase microextraction (HS/SPME) was successfully used in a simultaneous multicomponent analysis of hexachlorobenzene (HCB), tefluthrin, heptachlor, aldrin, chlorpyrifos, fenthion and bifenthrin in aqueous medium. Measurements were performed using a nonpolar polydimethyl siloxane (PDMS) fiber. Detection and quantification were(More)
In this paper, we present an algorithm to combine edge information from stereo-derived disparity maps with edges from the original intensity/color image to improve the contour detection in images of natural scenes. After computing the disparity map, we generate a so-called “edge-combination image,” which relies on those edges of the original image that are(More)
Original scientific paper Collaborative CAD of distant modelling is a today’s necessity for realization in a timely manner. This need arises even within educational institutions, where investments in the development of technologies to support collaborative distance learning are still trivial. Most CAD programs used in engineering have modules for(More)
This article highlights how “place-based education” can be used to raise awareness about sustainability and potentially influence design process decisions that have environmental and cultural implications. “Place-based education” is a term used to describe an educational worldview based on development of curriculum centered on the local, social, economic,(More)
Interactive simulations, virtual environments and 3D interfaces can significantly contribute to the learning process, through collaboration and interaction with distant participants, as well as through simulation of real environments and real life situations. Depending on the needs and subject matter, different technologies, software, and their combinations(More)
Original scientific paper This paper analyzes the differences in mass yield of moist rapeseed grain for six different passes of combine harvester along the plot. The Mann-Whitney U test and Z-statistic are used for analysis needs. For harvest pass 1 and pass 4 the Z-value is only 0,211, whereas the statistical significance level to confirm this finding is(More)
In this paper we present educational environment in the form of virtual classroom or lab for aviation students (3DEEA). This lab is part of virtual university system for distance learning and assessment. Most students admit that flying in a virtual environment approaches reality. These are the reasons, beyond lower costs and increased safety, for train in(More)