Global ETD Search

1	De osynliga barnen : Om den svenska statens skyldigheter gentemot de svenska barnen i nordöstra Syrien Karlsson, Christina January 2021 (has links) No description available. Repatriering Al-Hol Roj Barnkonventionen Ethics Etik
2	Akcelerace částicových rojů PSO pomocí GPU / Acceleration of Particle Swarm Optimization Using GPUs Krézek, Vladimír January 2012 (has links) This work deals with the PSO technique (Particle Swarm Optimization), which is capable to solve complex problems. This technique can be used for solving complex combinatorial problems (the traveling salesman problem, the tasks of knapsack), design of integrated circuits and antennas, in fields such as biomedicine, robotics, artificial intelligence or finance. Although the PSO algorithm is very efficient, the time required to seek out appropriate solutions for real problems often makes the task intractable. The goal of this work is to accelerate the execution time of this algorithm by the usage of Graphics processors (GPU), which offers higher computing potential while preserving the favorable price and size. The boolean satisfiability problem (SAT) was chosen to verify and benchmark the implementation. As the SAT problem belongs to the class of the NP-complete problems, any reduction of the solution time may broaden the class of tractable problems and bring us new interesting knowledge.
3	Akcelerace částicových rojů PSO pomocí GPU / Particle Swarm Optimization on GPUs Záň, Drahoslav January 2013 (has links) This thesis deals with a population based stochastic optimization technique PSO (Particle Swarm Optimization) and its acceleration. This simple, but very effective technique is designed for solving difficult multidimensional problems in a wide range of applications. The aim of this work is to develop a parallel implementation of this algorithm with an emphasis on acceleration of finding a solution. For this purpose, a graphics card (GPU) providing massive performance was chosen. To evaluate the benefits of the proposed implementation, a CPU and GPU implementation were created for solving a problem derived from the known NP-hard Knapsack problem. The GPU application shows 5 times average and almost 10 times the maximum speedup of computation compared to an optimized CPU application, which it is based on.
4	Metodika zpracování makroseismických dat a její aplikace na západočeský seismický roj 2008 / Methods of processing macroseismic data and their application to the 2008 earthquake swarm in western Bohemia Procházková, Pavla January 2011 (has links) Title: Methods of processing macroseismic data and their application to the 2008 earthquake swarm in western Bohemia Author: Bc. Pavla Procházková Department: Department of Geophysics Supervisor: doc. RNDr. Oldřich Novotný, CSc. Consultant: RNDr. Pavla Hrubcová, PhD. Supervisor's e-mail address: on@karel.troja.mff.cuni.cz Abstract: Abstract: This work evaluates macroseismic observations of the earthquake swarm which occurred in West Bohemia in 2008. The first chapters are devoted to the explanation of basic terms, the geological description of the region and the history of earthquakes in the region. The historical development of macroseismic scales and a detailed description of the EMS-98, used for the evaluation of the 2008 earthquake swarm data, are contained in the following chapters. The main part of the present work deals with the manual macroseismic evaluation of the swarm followed by a description of the program for the automatic evaluation of data. The program results were found to agree with the manual evaluation. In the next part there is a detailed description of a program for drawing isoseismal lines. In the appendix the reader can find an overview of macroseismic scales, sample questionnaires and suggestions to improve the Czech questionnaire. Keywords: macroseismical intensity, EMS-98...
5	Mörkrets Mästare : En studie i teknik och materialitet av Roj Fribergs bilder / The Master of Darkness : A study in technique and materiality of Roj Fribergs pictures Frykholm, Maja January 2022 (has links) Abstract This study concerns the Swedish artist Roj Friberg (1934–2016). The essay is based on a study of technique and materiality used by Friberg. He is quite marginalized and slightly forgotten in the Swedish art history and when mentioned merely described as a painter from the 1960´s who used graphite mixed with French turpentine, in order to work on the surface with an eraser attached to an electric drill. However, Friberg used other different and more complex painting techniques in his work, something this essay will notice and highlight. The used method is a biographical, dealing with the references to Friberg. To explain why he was considered an “outsider” in Swedish art, the theory of social capital by Pierre Bourdieu is applied. Also, Wolfgang Kemps concept of reception history, which focus on the arts beholder, rather than the artists itself. From the middle of 1970 Friberg also used an ancient painting technique called encaustic, heated beeswax mixed with pigment. Paintings which have received very little attention; therefore, the focus is on his use of encaustic in combination with his other techniques, such as melted graphite, melted wax crayons or drawn with wax crayons and graphite. The work with lasered layers and the typical method of working from darkness to light in Friberg´s pictures shows resemblance with the ancient encaustic portraits from Fayum, in the 50 AD. Art History Roj Friberg Encaustic Beeswax and pigment Technique and Materiality Swedish Modern Art Graphite Art Techniques Fayum Portrait Swedish Artists Pierre Bourdieu Social Capital Wolfgang Kemp Reception History Konstvetenskap Roj Friberg enkaustik bivax och pigment teknik och materialitet svensk modern konst konstnärliga tekniker grafit Fayumporträtten svensk konstnär Pierre Bourdieu socialt kapital Wolfgang Kemp receptionshistoria. Art History Konstvetenskap
6	Planární antény na substrátech s elektromagnetickými zádržnými pásmy / Planar Antennas on Electromagnetic Bandgap Substrates Horák, Jiří January 2009 (has links) Planar antennas are used in several technical applications. The family of planar antennas contains microstrip antennas, which are very popular due to the low weight, low profile, simple manufacturing and easy mass production. Lower gain and excitation of surface waves are disadvantages of microstrip antennas. The propagation of surface waves can be efficiently suppressed if the conventional substrate is replaced by an electromagnetic bandgap (EBG) substrate. Microstrip antennas on EBG substrates have been presented in an open literature for several years. Nevertheless, no published work is devoted to the design of EBG substrates, which can suppress surface waves at several frequencies those cannot be covered by a single bandgap. In order to reach optimum parameters of designed antennas, selected global optimization methods are applied (genetic algorithms, particle swarm optimization, ant colony optimization).

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