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A method for computer-aided symmetry detection in 3D CAD models
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Mladen Burić Geometrical symmetry represents a fundamental property employed in many aspects of
mechanical engineering. Engineers typically rely on visual inspection to detect symmetry
in 3D CAD models, but there is a requirement for computer-aided symmetry detection.
While prior studies have focused on symmetry detection in 3D CAD models with analytic
surfaces, there is a need for a method that can handle numeric surfaces as well. This
doctoral thesis introduces a geometry-based computer-aided...
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A microwave-assisted synthesis of nitrogen-doped TiO2/graphene oxide for use in visible-light-activated photocatalytic processes
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Camilo Sánchez Tobón This research was mainly focused on the synthesis by microwave-assisted method to produce a low bandgap energy N/TiO2/rGO nanocomposite photocatalyst used to remove organic micropollutants (OMPs) under different irradiation sources. Initially, the influence of temperature and reaction time in the microwave (MW) oven on the final properties of N/TiO2 was investigated. Also, the effect of nitrogen doping was researched using urea as a nitrogen source. It also explored the effect of reduced...
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A model of information processing and interactions in teams developing technical systems
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Tomislav Martinec Teamwork is often regarded as a critical operation element of product development organisations, whereas an efficient team-based approach to engineering design activities is a prerequisite for the success of technical systems development projects. Design team members thus need assistance in the form of methods and tools that will facilitate collaboration during team design activities, inasmuch as researchers and project managers require support in developing and prescribing the most...
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A model of innovation evolution in the development of technical systems
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Vladimir Smojver Developing new technologies is one of the most important goals of contemporary scientific and industrial research. Understanding how a technology domain evolves and its current state is invaluable in an ecosystem seeing the speed of technology evolution increasing at rapid pace. An overview of existing literature showed that while there is a significant volume of research focusing on using patents to study technology change, most of this research, in a technology evolution context, focuses...
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A numerically efficient computational model of a flapping micro aerial vehicle based on Hamiltonian geometric reductions
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Viktor Pandža Insect flight capabilities provide fascination for humans and fuel aspirations for development
and manufacturing of insect-type flapping wing aerial vehicles. However, complex
underlying aerodynamic phenomena limit our abilities in understanding insect flight and
producing aerial vehicle exploiting same phenomena. To this end, a novel mid-fidelity
approach to insect-type flapping vehicles modeling is proposed. Computational model
includes Helmholtz-Hodge decompositon of fluid...
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A procedure for improving the energy efficiency and environmental performance of short sea and inland waterway vessels
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Maja Perčić The emissions released due to the combustion of fossil fuels in marine engines negatively affect the environment and human health. This impact of shipping is more pronounced when the ships operate near populated areas and spend much time in ports, and in that way, directly impair the air quality of the local population. These ships are usually engaged in the short-sea shipping and inland navigation sector. In this doctoral dissertation, the focus is put on the Croatian short-sea shipping and...
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Advanced energy planning of Smart Islands
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Marko Mimica Climate change represents one of the greatest challenges of our time. Human activity is causing global temperature to rise and failure to act swiftly and efficiently on this issue will result in irreversible consequences. European union has recognised this and set ambitious goals for tackling this issue. The role of geographical islands is also recognised in the European union legislation. Thus, many studies deal with the analysis of energy systems on islands and offer solutions for their...
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Aerodynamic and aeroelastic characteristics of cablesupported bridges with roadway
wind barriers
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Andrija Buljac Strong cross-winds on bridges and viaducts may cause dynamic instabilities for
passing vehicles. To protect vehicles from those adverse cross-wind effects, wind barriers are
commonly placed on bridges. While these barriers proved to be successful in sheltering
vehicles from cross-winds, their influence on bridge aerodynamic and aeroelastic
characteristics is still fairly unknown. This is particularly important for long-span cablesupported
bridges that are susceptible to dynamic...
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Algoritam za tehnološku klasifikaciju na temelju CAD 3D modela izratka
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Dražen Antolić Rad se bavi istraživanjem mogućnosti automatizirane tehnološke klasifikacije na temelju CAD 3D modela izratka, što je nužan uvjet za automatizirano projektiranje osnovnih tehnoloških procesa, odnosno procjenu troškova izrade. Postavljena je hipoteza istraživanja: „Moguća je automatizirana tehnološka klasifikacija izradaka na temelju CAD 3D modela“. Pretpostavljeno je da u digitalnom zapisu CAD 3D modela postoje tehnološke značajke izratka koje je moguće izdvojiti u posebnu...
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Analiza ekonomski održivog potencijala obnovljivih izvora u energetici Malte
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Antoine Busuttil S apsolutnom ovisnošću o uvoznim fosilnim gorivima i bez povezanosti na europske ili afričke električne mreže, elektroenergetski sustav Malte je izrazito osjetljiv te je pod utjecajem mnogih internacionalnih čimbenika. U svrhu smanjenja ove ovisnosti važnost integracije drugih izvora energije u energetski sustav Malte je od najvećeg značenja. Smještena u centru Sredozemlja, Malta može puno dobiti od iskorištavanja velikog potencijal solarne energije te korištenje ostalih...
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