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Papers by Simon Kanka
Energies
After being neglected for a long time, in the last years, ships have been recognized and studied ... more After being neglected for a long time, in the last years, ships have been recognized and studied as sound emitters. The sound energy they generate impacts the outside, but it can also affect the indoor quality of life if the environments are not properly designed. In fact, acoustic comfort plays a pivotal role, particularly in recreational crafts. In the present work, room acoustics and acoustic camera measurements were performed, inside a 50 m length overall yacht, chosen as a case study in order to evaluate the acoustic comfort. The Italian classification procedure UNI 11367:2010 for buildings was applied, and results have been compared to other international comfort classes. However, all of these are based on prescription for standard buildings, and the present work highlights that they do not account for the effective ship’s acoustic issues: sound energy transfer from impacts over ceilings and sound energy leakage. While attention of shipbuilders in acoustic comfort is shown in ...
Effective field theories for membranes have found several applications in physics. They are used ... more Effective field theories for membranes have found several applications in physics. They are used in condensed matter physics and biological physics and have also found, in the last few decades, space in string theory and gravitational theories. Studying such theories can thus be useful to develop common languages and tools that connect various aspects of the physics world. Examples of research objects of interest are the study of graphene, which mechanically can be described by a crystalline membrane, and cells’ membranes that can be described by a fluid membrane model. The model that we have chosen to study in detail in this thesis is related to the Helfrich action for membranes, that was originally used to describe cells’ lipid bilayers. The phase-diagram of a general membrane can include many kinds of phases, which are separated by phase-transitions. However, in general, we do not know what the order of these phase-transition is. Therefore, in the thesis we concentrated our study...
Energies
After being neglected for a long time, in the last years, ships have been recognized and studied ... more After being neglected for a long time, in the last years, ships have been recognized and studied as sound emitters. The sound energy they generate impacts the outside, but it can also affect the indoor quality of life if the environments are not properly designed. In fact, acoustic comfort plays a pivotal role, particularly in recreational crafts. In the present work, room acoustics and acoustic camera measurements were performed, inside a 50 m length overall yacht, chosen as a case study in order to evaluate the acoustic comfort. The Italian classification procedure UNI 11367:2010 for buildings was applied, and results have been compared to other international comfort classes. However, all of these are based on prescription for standard buildings, and the present work highlights that they do not account for the effective ship’s acoustic issues: sound energy transfer from impacts over ceilings and sound energy leakage. While attention of shipbuilders in acoustic comfort is shown in ...
Effective field theories for membranes have found several applications in physics. They are used ... more Effective field theories for membranes have found several applications in physics. They are used in condensed matter physics and biological physics and have also found, in the last few decades, space in string theory and gravitational theories. Studying such theories can thus be useful to develop common languages and tools that connect various aspects of the physics world. Examples of research objects of interest are the study of graphene, which mechanically can be described by a crystalline membrane, and cells’ membranes that can be described by a fluid membrane model. The model that we have chosen to study in detail in this thesis is related to the Helfrich action for membranes, that was originally used to describe cells’ lipid bilayers. The phase-diagram of a general membrane can include many kinds of phases, which are separated by phase-transitions. However, in general, we do not know what the order of these phase-transition is. Therefore, in the thesis we concentrated our study...