Faculty of Mechanical Engineering

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Author: search.filters.author.Zlatko PetreskiHas files: Yes

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    Item type:Publication,
    Analysis of the Efficiency of Sound Barriers as a Method for Passive Control of Traffic Noise
    (he European Society of Safety Engineers, European Association of Occupational Safety EUROSA, 2023-09)
    Trajce Velkovski
    ;
    Maja Anachkova
    ;
    Simona Domazetovska
    ;
    Jasmina Chaloska
    ;
    Zlatko Petreski
    In recent decades, the introduction of stricter environmental noise laws has resulted in a series of noise reduction measures of a different nature. These include urban planning measures such as the designation of noise-sensitive areas, regulations on vehicle speed limits or traffic restrictions, measures to improve the acoustic performance of vehicles, pavements and buildings, and the construction of noise barriers. The most used method to reduce noise on thoroughfares and highways is the installation of sound barriers that are constructed and constructed along the highway. There are three types of acoustic barriers, namely reflective, absorptive, and reactive. Absorbing barriers are opaque and contain a porous element that absorbs sound, such as fiber concrete and granulated concrete. Reflective barriers can be opaque or transparent and do not contain sound-absorbing material (concrete, cement, metal or wood) in their construction. Reactive barriers are opaque and are constructed to have cavities or resonators that are designed to absorb or reduce only certain frequencies that are part of the noise they are exposed to. Determining the effectiveness of noise barriers has attracted the attention of researchers over the past 40 years, and a wide variety of mathematical and experimental methodologies have been developed to assess it.
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    Item type:Publication,
    Methodology for Prevention Through Design in Occupational Safety
    (Faculty of Technical Sciences, University of Novi Sad, Serbia, 2023-10)
    Trajce Velkovski
    ;
    Jasmina Chaloska
    ;
    Zlatko Petreski
    ;
    Dragan Mitkovski
    ;
    Vladimir Mucenski
    Prevention by Design (PtD) is a concept of methodologies that can be applied during the design phase of work processes and products, ensuring the reduction of risks to the safety and health of individuals exposed to the design in all its forms. The purpose of this master's thesis is to assess the current methods of identifying and preventing work injuries among companies with the potential to implement Prevention through Design. Additionally, it aims to gauge the interest of designers, planners, and technical-engineering staff in its application. The analysis is conducted through literature research and a survey questionnaire distributed to companies directly or indirectly involved in design processes and products. This article provides an initial research analysis and sets the stage for further research on the methods and practices of implementing this ideology in the Republic of North Macedonia. The paper concludes with a summary of the data analysis and offers recommendations for future research.
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    Item type:Publication,
    Methodology for Prevention Through Design in Occupational Safety
    (Faculty of Technical Sciences, University of Novi Sad, Serbia, 2023-10)
    Trajce Velkovski
    ;
    Jasmina Chaloska
    ;
    Zlatko Petreski
    ;
    Aleksandra Hristova
    Individual motivation plays a fundamental role in shaping human behavior, and this holds true for employees within the realm of occupational health and safety (OHS). Consequently, comprehending employee motivation from various levels and perspectives within organizations assumes paramount importance. Among the crucial components of Occupational Health and Safety Management Systems (OHSMS) within organizations, as well as OHS more broadly, are the OHS trainings provided to employees. This research aims to characterize the qualitative dimension of employee motivation, drawing upon the framework of the Self-Determination Theory (SDT), in manufacturing organizations located in the Republic of Macedonia. The findings of this study aim to contribute to a deeper understanding of employee motivation and aid in the enhancement of organizational approaches to the design of OHS trainings. The identification of qualitative dimensions of employee motivation, as per the principles of SDT, is grounded in the analysis of existing scientific and research literature, supplemented by a survey conducted among a sample of 70 employees.