Monday 27th of May 2019 03:00 PM
Home | Search results for:

Public Reports 2009/2015


  • «
  •  Start 
  •  Prev 
  •  1 
  •  2 
  •  Next 
  •  End 
  • »
Page 1 of 2
Search by :

Theme : All
Academy : Croatian Academy of Engineering (HATZ)
Publication : All

Jubilee Annual 2017-2018 of the Croatian Academy of Engineering

Croatian Academy of Engineering (HATZ)
2018

It is customary for the Academy to present the appropriate form of its activities in the annualsof the academy, which are issued yearly in Croatian or English. So, Annual 2016 of the Croatian Academy of Engineering was published in which our members in their papers deal with the current burning topic entiled "The State and theFfuture of Technical and Biotechnical Sciences in Croatia in the 21st Century" which certainly contributed to considerations and decisions related to the future of science and economy. You now have in front of you our Annual 2017-2018 in english under the title "Annual 2017-2018 of the Croatian Academy of engineering". The significant aim of this edition is to make a contribution and historical review of activities over the past years and to make you familiar with the type and membership of the Academy.

Enineering Power - Bulletin of the Croatian Academy of Engineering - Vol. 13(3)

Croatian Academy of Engineering (HATZ)
2018

Civil engineering is one of the oldest and broadest engineering fields, dealing with the design and construction, but also with the maintenance of the naturally and physically built environment. It includes a vast spectrum of works such as buildings, roads, railways, bridges, canals, dams, sewage systems etc. It is a fact that civil engineering does not develop at the same progressive rate as some other engineering disciplines (i.e. mechanical, electrical or computing engineering) where new discoveries are introduced practically on a daily-basis.The objective reasons for this are to be found in the nature of civil engineering which has been developing gradually not for centuries, but milleniums. However, the implementation of numerical codes, modernization of investigation and testing equipment, much more powerful construction machines have all led to the implementation of innovative techniques and technologies in civil engineering over the last few last decades. The papers listed below represent a part of the scientific and professional work of experts of the Department of Geotechnics, Faculty of Civil Engineering, University of Zagreb. The Department of Geotechnics is one of nine departments of the Faculty of Civil Enineering, University of Zagreb. The Department of Geotechnics is one of nine departments of the Faculty of Civil Engineering and it is organised in two chairs, the Chair of Soil and Rock Mechanics and the Chair for Geotechnical Engineering.

Enineering Power - Bulletin of the Croatian Academy of Engineering - Vol. 13(2)

Croatian Academy of Engineering (HATZ)
2018

A large part of present technological achievements result from research and continuing advances in the field of artificial intelligence (AI). AI is a part of computer science that aims to create intelligent machines, capable of thinking, acting and learning like humans. It is an interdisciplinary field spanning a variety of subfields, among which machine learning (ML) and computer vision (CV) are generally regarded as core parts of AI. CV is field that aims to give the computer visual understanding of the world from images. ML is a field od study that gives computers visual understanding of the world from images. ML a field of study that gives computers the ability to learn how to solve a certain task. It is particularly suited for problems that may seem relatively simple for humans, but are rather difficult to solve by using classical image processing approaches. CV and ML fields have a significant overlap where many CV problems can be solved using ML techniques.

Enineering Power - Bulletin of the Croatian Academy of Engineering - Vol. 13(1)

Croatian Academy of Engineering (HATZ)
2018

This issue is dedicated to the scientific work in the field of biomechanical engineering in the Laboratory for numerical Mechanics at the Faculty of Mechanical engineering and Naval Arhitecture, University of Zagreb. Our work concerns modeling of soft tissue behavior, particularly abdominal aortic aneurysms (AAAs) development. We addressed the problem of intraluminal thrombus enlargement within abdominal aortic aneurysm. Our mail goal was to develop a theoretical and computational biochemomechanical model of evolving properties of ILT incorporated into an initially healthy artery.We showed that thrombus-laden lesions can either arrest or rupture depending on the biochemical (e.g., concentration of elastases) and biomechanical (stiffness of fibrin) properties of the ILT. The herein presented results are the results of fruitful cooperation with Jay D Humphrey's group from Yale university, USA, Gerhard Holzapfel's group from TU Graz, austria, Seungik Baek from Michigan state University, USA and Ivo Lovričević, Medical School, University of Zagreb. The scientific work in our group was supported by grants from the Croatian Science Foundation project IP-2014-09-7382 and Installation Grant to I. Karšaj.

Enineering Power - Bulletin of the Croatian Academy of Engineering - Vol. 12(3)

Croatian Academy of Engineering (HATZ)
2018

Biomedical engineering is one of the fastest developing fields, which touches many specialties and provides a basis for the faster development of medical science. Close and fruitful cooperation of medical doctors and engineers results in team synergy, thus enabling faster progress than in the case when everyone works seperately in their own "silos". At the University of Zagreb, Faculty of Mechanical engineering and Naval Architecture we recognised the necessity of such cooperation more than ten years ago. Today, our several engineer teams are teames up with medical doctors in projects related to medicine. As pathological conditions in the cardiovascular system (such as atherosclerosis, formation of aneurysms, valvular jeart diseases, etc.) are strongly interlinked with the hemodynamics of the cardiovascular system and tissue remodeling, they attract interest of our departments. The Department of Fluid Mechanics is now in charge of hemodynamics and the Department of Mechanics is in charge of tissue remodeling and formation of aneurysms.The papers provide the Department of Fluid Mechanics team with a short overview over research activities and results in the field of hemodynamic modeling of the cardiovascular system. We have developed models and numerical methods with different levels of complexity: from a lumped parameter model to one-dimensional and quasi two-dimensional to three-dimensional model.

Engineering Power - Vol. 13(2)

Croatian Academy of Engineering (HATZ)
2018

A large part of present technological achievements results from research and continuing advances in the field of artificial intelligence (AI). AI is a part of computer science that aims to create intelligent machines, capable of thinking, acting and learning like humans. It is an interdisciplinary field spanning a variety of subfields, among which machine learning (ML) and computer vision (CV) are generally regarded as core parts of AI. CV is a field that aims to give the computer visual understanding of the world from images. ML is a field of study that gives computers the ability to learn how to solve a certain task. It is particularly suited for problems that may seem relatively simple for humans, but are rather difficult to solve by using classical image processing approaches. CV and ML fields have a significant overlap where many CV problems can be solved using ML techniques. Several papers listed below present a part of CV and related ML research conducted by experts from two laboratories of the Center of Excellence for Computer Vision (CRV) at the University of Zagreb Faculty of Electrical Engineering and Computing and also by CRV collaboration researchers. The first laboratory involved is Human-oriented Technologies Laboratory (HOTLab) led by Prof. Igor S. Pandžić, Ph.D., while the second laboratory involved is Advanced Shape Reconstruction and Registration Laboratory (SHARK Lab) led by Tomislav Pribanić, Ph.D., Associate Prof. Nowadays one heavily studied ML application is certainly face analysis (FA) presented in one of the papers below. Applications of FA technologies range from marketing and entertainment to automotive industry in which, for instance, the goal is fatigue detection for vehicle driver. Another paper presented discusses two thoroughly researched CV tasks: object localization and semantic segmentation. The former attempts to find objects in the input image, where minimum bounding rectangle of the object and the associated object class are the ideal output. The latter is somewhat more detailed where each image pixel is assigned to the corresponding class label. Interesting applications can be found in traffic control systems and medical imaging. The next paper presents ML in the context of image categorization and image similarity whereby a commercial service was developed, enabling buyers of certain products to find visually similar objects of interest. The camera is the essential tool used in CV. For numerous geometry related tasks the camera requires calibration which affects many applications such as geocoding, as explained in another paper. A geometrically calibrated camera is a basis for the 3D passive and 3D active reconstruction system too. 3D scanning systems are extensively used in fashion design and development and medical applications such as human back surface analyses. The last two papers put emphasis on those two applications.

Engineering Power - Vol. 13(1)

Croatian Academy of Engineering (HATZ)
2018

This issue is dedicated to the scientific work in the field of biomechanical engineering in the Laboratory for Numerical Mechanics at the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb. Our work concerns modeling of soft tissue behavior, particularly abdominal aortic aneurysms (AAAs) development. We addressed the problem of intraluminal thrombus enlargement within abdominal aortic aneurysm. Our main goal was to develop a theoretical and computational biochemomechanical model of evolving properties of ILT incorporated into an initially healthy artery. We showed that thrombus-laden lesions can either arrest or rupture depending on the biochemical (e.g., concentration of elastases) and biomechanical (stiffness of fibrin) properties of the ILT. These computational results suggest that ILT should be accounted for when predicting a potential enlargement or rupture risk of AAAs and highlight some specific needs for further experimental and computational research. The scientific work within our group concerned the very first growth and remodelling model that addresses together the mechanobiology, biochemistry, and biomechanics of thrombus-laden AAAs.
The herein presented results are the result of fruitful cooperation with Jay D Humphrey’s group from Yale University, USA, Gerhard Holzapfel’s group from TU Graz, Austria, Seungik Baek from Michigan State University, USA and Ivo Lovričević, Medical School, University of Zagreb. The scientific work in our group was supported by grants from the Croatian Science Foundation project IP-2014-09-7382 and Installation Grant to I. Karšaj.

Life and Inventions of Faust Vrančić

Croatian Academy of Engineering (HATZ)
2018

The third edition has been substantially expanded and supplemented by research into a few unexplained events from the life of Faust Vrancic and his family. It is particularly concerned with the origin of his family and the family coat of arms, his initial form and later changes. Various claims and representations of his works are also considered. The book also points out some questions historians have no answers yet. In the analysis of the work of renaissance engineers, a common occurrence of the use of ideas of contemporaries or predecessors was noted, without mentioning their name. In the past few years scientists are investigating these cases and the results greatly change the image of the greats of that age, among whom are Francesco di Gorgio Martini and Leonardo da Vinci. For this reason, chapter 3.2 is added in the book The common phenomenon of using other ideas and solutions with a few examples that point to this phenomenon. This is necessary because this book deals with the models Faust Vrančić had, his improvements to these assumed ideas, as well as by emphasizing his original works.

Jubilee Annual 2017-2018 of the Croatian Academy of Engineering

Croatian Academy of Engineering (HATZ)
2018

The significant aim of this edition is to make a contribution to marking the 25th anniversary of our Academy through the organizational and historical review of activities over the past years and to make you familiar with the type and membership of the Academy.
In addition to the informative presentation of the activities, an insight into the part of our members' scientific work is given so that the Annual also contains a series of recent original papers of some of our members, giving the Academy additional scientific value.
The Annual presents a brief description of our normative acts with special reference to the Statute of the Academy.
Three comprehensive papers are dedicated to the twenty-five-year history of the Croatian Academy of Engineering described through the memories of the previous historical presidents.
The following chapter “National Awards and Decorations of the Members of the Croatian Academy of Engineering 1993-2018” and “Recipients of the Awards of the Academy 2002-2018” brings a list of our members who are the winners of social  awards  and decorations, and especially of traditional awards made by our Academy for years.
It is an opportunity for our readers of the Jubilee Annual to get acquainted with our members and their number in the special chapter 'Members of the Academy in 2018 (Full Members of the Academy, Elected Members of the Academy, Emeriti of the Academy and Associates of the Academy in 2018 ',    ' Honorary Members of the Academy in 2018 ',' Deceased Members of the Academy (all categories) 1993-2018’.
As the Academy maintains cooperation with the rest of the scientific community, and especially with the economy, the next chapter 'Supporting Members of the Academy in 2018'  also presents our current corporate members in the category of supporting members of the Academy.
In 2017 the current leadership, i.e. the Governing Board, was elected, whose mandate lasts up to 2021. As this jubilee year falls within the scope of this mandate, we have found it desirable to present a shortened election program of work of the new Governing Board to give the reader an insight into the current activities of the Academy as presented at the end of the first part of the Annual in 'A Short Overview of the Work of the Governing Board of the Croatian Academy of Engineering 2017-2021 '.
In order to become more familiar with the scope of the activities of our members whose quality and number we are proud of, the last part of the Annual presents in the form of 'Who is Who' in our Academy, as we have done earlier, the basic information about our members and the reader will surely then gain the impression of the significance of the Croatian Academy of Engineering today.

Jubilee Annual of Croatian Academy of Engineering 2016

Croatian Academy of Engineering (HATZ)
2017

The development of technical and biotechnical sciences is the basis for the overall social progress. We have witnessed that in recent years the focus of international research competitions is directed towards the applied sphere. The emphasis of innovation processes is also noticeable, as well as the recommendation of involving small and medium-sized enterprises in research activities. Because of the accelerated development of technical sciences, the answer to the question about future directions of development is not unambiguous. Croatia's Republic of Croatia, as a shortage of unclear values of quality of life and technological standards of developed EU countries, one of the high priorities should be to consider one's own relationship to the underlying principles of such development. The topics of optimal higher education and the promotion of innovation, as well as the appropriate incorporation of engineering sciences into the general social phenomena, give particular importance to the importance of analyzing the present situation and the development of guidelines for future development.

Engineering Power - Vol. 12 (3) 2017

Croatian Academy of Engineering (HATZ)
2017

Vol. 12(3) 2017 - 20 pages - English

Biomedical engineering is one of the fastest developing fields, which touches many specialties and provides a basis for the faster development of medical science. Close and fruitful cooperation of medical doctors and engineers results in team synergy, thus enabling faster progress than in the case when everyone works separately in their own “silos”. At the University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture we recognized the necessity of such cooperation mora than ten years ago. Today, our several engineer teams are t5eamed up with medical doctors in projects related to medicine. As pathological conditions in the cardiovascular system (such as atherosclerosis, formation of aneurysms, valvular heart diseases, ect.) are strongly interlinked with the hemodynamics of the cardiovascular system and tissue remodelling, they attract of our departments. The Department of Fluid Mechanics is now in charge of hemodynamics and the Department of Mechanics is in charge of tissue remodelling and formation of aneurysms. The papers below provide the Department of Fluid Mechanics team with a short overview over research activities and results in the field of hemodynamic modelling of the cardiovascular system. we have developed models and numerical methods with different levels of complexity: from a lumped parameter model to one-dimensional and quasi two-dimensional model. The simplest lumped parameter model is important for clinicials, since it describes the principal part of the cardiovascular systems with a relatively small number of parameters, each having a clear physiological meaning crucial to understand the system function. Such a model is being applied in an ongoing project considering non-invasive method for the model parameter identification of pulmonary circulation in subjects with pulmonary hypertension. The problem with one-dimensional and three-dimensional models is that they require more input data (e.g. space variation of blood vessel diameter and wall properties) that cannot be easily measured, but still such models are very important for understanding wave phenomena in the arterial tree and for estimating the local flow parameters, important for the prediction of some diseases (such as aneurysm growth). The developed models and methods are a good basis for prospective cooperation with the University of Zagreb, School of Medicine with purpose of collaborative research on artificial heart development and education of prospective medical engineering students.