Zobrazují se záznamy 1-20 z 8188

    • Fázové transformace v hořčíkových slitinách typu MgZnAl. 

      Kodetová, Veronika (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 27. 2. 2019
      In the present work, there was analyzed thermal evolution of the phase transformation in the MgZnAl and MgZnAlCa alloys with different concentration of the Zn and Ca. The grains were occupied by the phase with quasicrystaline ...
    • Semantic relation extraction from unstructured data in the business domain 

      Rampula, Ilana (Univerzita Karlova, Matematicko-fyzikální fakulta, 2016)
      Datum obhajoby: 8. 6. 2016
      Text analytics in the business domain is a growing field in research and practical applications. We chose to concentrate on Relation Extraction from unstructured data which was provided by a corporate partner. Analyzing ...
    • Shell galaxies: kinematical signature of shells, satellite galaxy disruption and dynamical friction 

      Ebrová, Ivana (Univerzita Karlova, Matematicko-fyzikální fakulta, 2013)
      Datum obhajoby: 5. 11. 2013
      Title: Shell galaxies: kinematical signature of shells, satellite galaxy disruption and dynamical friction Author: Ivana Ebrová Department / Institute: Astronomical Institute of the Academy of Sciences of the Czech Republic ...
    • Časově rozlišená spektroskopie polovodičů se širokým zakázaným pásem 

      Martínek, Miroslav (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      In this thesis experimental samples of multiple quantum wells in the InGaN/GaN structures will be compared using methods of laser spectroscopy. In particular, the optical properties of the samples will be investigated. The ...
    • Optical and magneto-optical properties of Heusler compounds 

      Král, Daniel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 4. 2. 2019
      Cílem této práce bylo studium Heuslrových sloučenin pomocí optických a magneto-optických (MO) metod. V případě první sloučeniny, Co2FeGa0.5Ge0.5, jsme studovali výskyt strukturálního disorderu za pomoci spektroskopické ...
    • Hybrid Deep Question Answering 

      Aghaebrahimian, Ahmad (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 5. 2. 2019
      Title: Hybrid Deep Question Answering Author: Ahmad Aghaebrahimian Institute: Institute of Formal and Applied Linguistics Supervisor: RNDr. Martin Holub, Ph.D., Institute of Formal and Applied Lin- guistics Abstract: As ...
    • Global exploration in Markov chain Monte Carlo methods for light transport simulation 

      Šik, Martin (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 30. 1. 2019
      Monte Carlo light transport simulation has become a de-facto standard tool for photorealistic rendering. However, the algorithms used by the current rendering systems are often ineffective, especially in scenes featuring ...
    • Raman microspectroscopy of living cells and biological tissues 

      Moudříková, Šárka (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 19. 2. 2019
      Title: Raman microspectroscopy of living cells and biological tissues Author: Šárka Moudříková Department / Institute: Institute of Physics of Charles University Supervisor of the doctoral thesis: doc. RNDr. Peter Mojzeš, ...
    • Space-times of ring sources 

      Pešta, Milan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 15. 2. 2019
      Marginally outer-trapped surfaces (MOTSs) are found for a family of space-like hypersurfaces described by the Brill-Lindquist initial data. These hypersurfaces contain a singular ring characterized by its radius, mass and ...
    • Backtesting Value-at-Risk: Porovnání vybraných přístupů 

      Šedivý, Milan (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      This thesis focuses on the evaluation of different backtesting methods that are routinely applied to one of the most commonly used risk measure Value- at-Risk. The main goal of this thesis is to present approaches used to ...
    • Echo state siete a ich využitie na predpovedanie časových radov 

      Savčinský, Richard (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 14. 2. 2019
      Recurrent neural networks (RNN) enable to model dynamical sys- tems with variable input length. Their disadvantage is in inherently difficult trai- ning which means adjusting weights of connections between neurons connected ...
    • Využití evolučních algoritmů pro vytváření AI kontrolerů modelů tanků 

      Šijanov, Denis (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 14. 2. 2019
      Title: Using genetic algorithms to create AI tank model controllers Author: Denis Šijanov Department: Department of Software and Computer Science Education Supervisor: Mgr. Jakub Gemrot, Ph.D., Department of Software and ...
    • Stochastic dominance in portfolio optimization 

      Paulik, Marek (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      The main topic of this thesis is the application of stochastic dominance constrains to portfolio optimization problems. First, we recall Markowitz model. Then we present portfolio selection problems with stochastic dominance ...
    • Dotykové grafy kružníc a Möbiove transformácie 

      Porvichová, Janka (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 14. 2. 2019
      A graph can be represented by various geometric representations. In this work we focus on the circle packing representation. We state various concepts impor- tant for proving results regarding this kind of representation. ...
    • Pokusy z geometrické optiky pro výuku na základní a střední škole 

      Hložek, Filip (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      Title: Experiments from geometrical optics for teaching at primary and secondary school Author: Ing. Filip Hložek Department: Department of Physics Education Supervisor: RNDr. Jitka Houfková, Ph.D., Department of Physics ...
    • Podpora realizace a vysvětlení problematických fyzikálních pokusů ve výuce na prvním stupni základní školy - minipřípadová studie 

      Čermáková, Aneta (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      i Title: Support for the Implementation and Explanation of Problematic Physics Experiments in Education at Primary School - Mini Case Study Author: Bc. Aneta Čermáková Department: Department of Physics Education Supervisor: ...
    • Effect of substantial grain refinement on microstructure and mechanical properties of precipitation hardenable magnesium alloys. 

      Hofman, Daniel (Univerzita Karlova, Matematicko-fyzikální fakulta, 2019)
      Datum obhajoby: 13. 2. 2019
      Properties of magnesium alloy WE43 and the effect of substantial grain refinement by ECAP were studied. The compressive strength test revealed a significant increase of yield strength after ECAP, resulting in yield strength ...
    • Performance Awareness and Observability on Modern Platforms 

      Bulej, Lubomír
      Datum obhajoby: 6. 2. 2019
    • Neabsolutní konvergence Newtonova integrálu 

      Konopka, Filip (Univerzita Karlova, Matematicko-fyzikální fakulta, 2018)
      Datum obhajoby: 12. 9. 2018
      In this thesis, we look for sufficient conditions for non-absolute convergence of Newton integral. Importantly we analyse how the oscillation of the sine function influences the con- vergence of the integral. We are dealing ...

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