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- TIHOMIR ATANASSOV DOVRAMADJIEV (ТИХОМИР АТАНАСОВ ДОВРАМАДЖИЕВ), Professor (Assoc.) Dr. Eng. has professional activity... moreTIHOMIR ATANASSOV DOVRAMADJIEV (ТИХОМИР АТАНАСОВ ДОВРАМАДЖИЕВ), Professor (Assoc.) Dr. Eng. has professional activity related to management, academic, educational, scientific and other to the Bulgarian Association of Ergonomics and Human Factors and Technical University Varna (TUV, Bulgaria). He received the Ph.D. in “Ergonomics and industrial design” (TUV/2012). He is a professor (assoc.) Dr. Eng. at TUV more than 10 years, at Industrial Design Department. He is the coordinator for Technical University of Varna, Bulgaria of CIII-HU-1506-01-2021 Ergonomics and Human Factors Regional Educational CEEPUS Network 9 European partners: HU, AT, BG, HR, PL, RO, RS, SI, SK. https://www1.tu-varna.bg/tu-varna/images/international/CEEPUS_TUV_2020.pdf. He actively participates in the organization of joint academic and scientific international networks, projects and summer universities (Federation of European Ergonomics Societies Ergonomics (FEES): http://ergonomics-fees.eu/node/4 , http://ergonomics-fees.eu/node/297 , http://ergonomics-fees.eu/node/283; European Agency for Safety and Health at Work https://osha.europa.eu/en/oshevents/34th-summer-university-ergonomics) . He is the author of the book "Advanced technologies in Design", Technical University of Varna (TUV), pp. 228, ISBN: 978-954-20-0771-5, 2017. Within the framework of the Technical University of Varna, Bulgaria, he is a leading lecturer of the disciplines: Advanced Technologies in Design; Basics of Computer Design; Study Practice - Part 4; Multimedia design; Three-dimensional digitalization; Computer modelling (Bachelors, Industrial Design) and Eco Design (Masters, Industrial Design) http://umo.tu-varna.bg/index.php?option=com_content&view=article&id=13&Itemid=25. He has participated in over 60 scientific publications (Incl. Springer & Elsevier). Based on ResearchGate data (2022), he has about 300 K research reads. He has acted as chairman, author, or reviewer of the Applied Human Factors and Ergonomics (AHFE) conference, the International Conference on Human Systems Engineering and Design (IHSED), the Intelligent Human Systems Integration (IHSI) conference, the International Conference on Human Interaction and Emerging Technologies (IHIET), the International Symposium in Management (SIM), and other international science conferences and congresses. He is on the editorial board of the IETI Transactions on Ergonomics and Safety (TES, ISSN 2520-5439) and IETI Transactions on Engineering Research and Practice (TERP, ISSN 2616-1699), American Journal of Management Science and Engineering (AJMSE), topical advisory member of MDPI Mathematics and other. He is an academic member and special issue editor of MDPI Mathematics (ISSN 2227-7390; Journal Rank: JCR - Q1 (Mathematics)/CiteScore - Q1 (General Mathematics); Impact Factor: 2.592 (2021); 5-Year Impact Factor: 2.542 (2021)) Special Issue "Mathematics and Computer Programming in 2D and 3D Open Source Software". https://www.mdpi.com/journal/mathematics/special_issues/Math_Comput_Programedit
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Modern dental healthcare is unthinkable without the use of biocompatible materials. They must have the necessary mechanical properties to ensure the strength of dental structures, as well as be as acceptable as possible by the human body.... more
Modern dental healthcare is unthinkable without the use of biocompatible materials. They must have the necessary mechanical properties to ensure the strength of dental structures, as well as be as acceptable as possible by the human body. In recent years, there has been an increase in the application of zirconium dioxide (ZrO2) material to metal ceramics in the manufacture of dental crowns, bridges and others. This has its natural continuation of the evolution of dental materials, which significantly improve human health not only in the oral area but also in complex, where the goal is to minimize the external contact of biological tissue with certain metal components. The present study shows the application of zirconium in the development of crowns on dental implants. Technological working hours are optimized. The process is followed in detail, highlighting important points that accompany the practical part of making the dental crown through the use of modern technologies in design. To objectively present the information in the study, a set of photographic material is presented, visualizing in detail important moments in the production of the zirconium crown.
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Many chemical and physical processes take place in the human body. They have a diverse nature, which makes the study of human nature complex, time-consuming and requiring specialized technical base, which provide entry to areas and... more
Many chemical and physical processes take place in the human body. They have a diverse nature, which makes the study of human nature complex, time-consuming and requiring specialized technical base, which provide entry to areas and processes that are often difficult to access or invisible to the human eye. This leads to the necessity to illustrate certain processes in the human body that are significant and need their visual presentation. This report shows developed animated actions of processes important for human biological organism, which are presented to students and specialists in the fields of biology, anatomy, ergonomics, medicine, and healthcare, as well as designers working in modern cybernetics, AR and VR. The developed 3D biological models give a better understanding of their nature and serve to build a digital database.
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Bulgarian female folk costume is rich in multiple characters, elements and details. One of the most characteristic is the belt buckles. As well as specially designed symbolism, the belt buckle - with their unique identity belong to the... more
Bulgarian female folk costume is rich in multiple characters, elements and details. One of the most characteristic is the belt buckles. As well as specially designed symbolism, the belt buckle - with their unique identity belong to the national - historical heritage of Bulgaria. In the present study a model of a belt buckle is digitized and reconstructed, and possessing grace and beauty. The realization of the completed three-dimensional computer model goes through stages of photogrammetry and computer design with special sculpting tools.
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Surveying the condition of yachts and their maintenance is of great importance for their functionality and efficiency. Finding the right approaches, expertise at different levels, design benchmarking are essential for all yacht... more
Surveying the condition of yachts and their maintenance is of great importance for their functionality and efficiency. Finding the right approaches, expertise at different levels, design benchmarking are essential for all yacht maintenance and security, resulting in crew and passenger safety. This report presents an evaluation and expertise in a real environment and documentation of decision-makers for the strength and functionality of a luxury motor yacht. For a good understanding of the problem, detailed photographic material has been documented showing in detail the required technical corrections. The research would be of interest to a wide range of yacht design and industry professionals, academic and research representatives, yacht users and all interested stakeholders.
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The present study examines the possibilities of applying modern technologies in the field of dental science and specifically in the treatment of bruxism. Based on an optimized methodology, a prototype, and digital and real dental splint... more
The present study examines the possibilities of applying modern technologies in the field of dental science and specifically in the treatment of bruxism. Based on an optimized methodology, a prototype, and digital and real dental splint models have been developed using biocompatible material and specialized equipment including a 3D scanner and a 3D printer. The details of the production of the models are precisely designed, taking into consideration the medical and technical requirements.
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In the contemporary conditions, the implementation of computer parametric design to facilitate the design of 3D paper models is successfully realized using modern technological tools such as the free software Blender. Through the... more
In the contemporary conditions, the implementation of computer parametric design to facilitate the design of 3D paper models is successfully realized using modern technological tools such as the free software Blender. Through the convenient interface of the program, the modeling of the desired three-dimensional shapes is greatly facilitated. This also applies to the automated process of constructing a drawing of the resulting polygonal 3D models, which in the future are assembled into three-dimensional paper models. This paper describes in detail the process of fine-designing 3D paper models using specific exemplary primitive, text, and with relatively complex form.
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Creation of different types of simulations of moving mechanisms with involved elements as gears is widespread. Depending on the specific needs different techniques which enable the accomplishment of the assignment are applied. Of... more
Creation of different types of simulations of moving mechanisms with involved elements as gears is widespread. Depending on the specific needs different techniques which enable the accomplishment of the assignment are applied. Of particular importance is the selection of suitable software system that contains the necessary tools, functional qualities, set of features for automating the drive mechanisms, simulations and animations. Furthermore, it is important to determine the accessibility to such resource. Under these conditions a very good solution is the system with open source Blender.
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Modern society is increasingly using ICT technologies to transfer information quickly. In addition to the purely technological advantages of IT tools, they enable the recipients of information data to be ultimately facilitated in their... more
Modern society is increasingly using ICT technologies to transfer information quickly. In addition to the purely technological advantages of IT tools, they enable the recipients of information data to be ultimately facilitated in their operational activities. On the other hand, data transfer, when it comes to transferring files with specific information, is a serious issue that concerns both available technological resources and security. This report aims to explore the current technological capabilities for the transfer of digital information containing banking, financial and other data, to be maximum protected from unauthorized or malicious users. Also into question are conventional methods of transmitting digital data via email or cloud. Open source software provides the possibility of reliable encryption and protection: Money Manager Ex, Tor Browser and OnionShare. In the present study, specific advantages of realizing the transfer of digital data from the point of transmission ...