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Study of the organization and dynamics of the membraneless cell compartments
Blažíková, Michaela ; Heřman, Petr (advisor) ; Cmarko, Dušan (referee) ; Hašek, Jiří (referee)
of Doctoral Thesis Title: Study of the organization and dynamics of the membraneless cell compartments Author: Michaela Blažíková Institute: Charles University in Prague, Faculty of Mathematics and Physics, Institute of Physics of Charles University Supervisor: Doc. RNDr. Petr Heřman, CSc., Charles University in Prague, Faculty of Mathematics and Physics, Institute of Physics of Charles University Abstract Eukaryotic cells contain many organelles and specific bodies. Beside the membrane delimited organelles such as nucleus, mitochondria or Golgi apparatus there are other structurally and functionally distinct membraneless structures in the cells. In this work we studied the self-organization processes, i.e. the processes that do not require specific interactions, of membraneless structures in nuclei, cytoplasm and plasma membrane of mammalian cells and yeast. The research was focused on the formation of nucleoli and Cajal bodies in mammalian cell nulei and processing bodies (P- bodies) in the cytoplasm of mammalian cells. The organization of MCC domains in the yeast plasma membrane (Membrane compartment of Can1) was studied as well. It was shown that nonspecific interactions as the result of macromolecular crowding could be one of the main driving forces in formation and stabilization of these...
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Origin of karst conduits and caves in Jizera Formation in Turnov.
Slavík, Martin ; Bruthans, Jiří (advisor) ; Schweigstillová, Jana (referee)
Aim of this study is to characterize the processes responsible for evolution of open conduits and caves in Jizera Formation near Turnov, in particular to distinguish if the main factor acting in enlargements of conduits is dissolution and the conduit system can be called karst, or if the process is caused by erosion of weakly cemented sandstone without contribution of dissolution. An important part of the study is to introduce the concept of self-organization. Based on results from accelerated simulation of dissolution of twenty rock samples, SEM analysis and drilling resistance, I have proved that rocks in Jizera Formation near Turnov dissolve in an acidic environment and their strength characteristics does not enable direct erosion by flowing water. Samples from localities of "Bartošova pec", "Slepé údolí Podhorčí", "Rozsedlinové ponory pod Drábovnou", "Šetřilovsko", "U Kačeny" and "Semikraska" dissolve, but behavior of samples from "Sudoměř - rybník" and "Sudoměř - Skalský potok" is in an acidic environment very similar to samples from Teplice Formation "Skalní pískovcový výchoz u Podhorčí" and "Valdštejn".
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Eligibility of primary school pupils to manage their time
Tošnerová, Aneta ; Voda, Jan (advisor) ; Stará, Jana (referee)
The topic of this thesis is procrastination. Procrastination is "the illogical, but deliberate delaying of planned action, which is accompanied by a commitment to alternative activities." (Sliviaková 2010, p. 3). Occasional procrastination however mostly harmless is only a small step from procrastination chronic. Chronic procrastination already points at undesirable situation, the malfunction of a healthy lifestyle and self-control. That view is the starting point for the research work of the problem, which investigates the symptoms of procrastination among primary and secondary school pupils. Procrastination is usually being considered in relation to adults' behaviour. The question asked is whether it is relevant to consider procrastination also in relation to children at primary school. In the theoretical part, we therefore first gathered and compiled the available data about the topic from various Czech and foreign sources, mainly to define with necessary precision the object of the study (procrastination) and learned the wider context of the issue (time management, self- management). The survey is based on interviews with six parents and thirty pupils from 1st to 5th grade. The method of research used with pupils was author a story that allowed them to identify themselves with a certain type of...
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Neural Networks and Their Applications
Chaloupka, David ; Rozman, Jaroslav (referee) ; Zbořil, František (advisor)
The aim of this thesis is to present a consistent insight into the most frequently used types of artificial neural networks and their applications. It depicts feedforward neural networks with backpropagation training algorithm, Hopfield networks and self-organizing maps (Kohonen maps). Second part of this thesis demonstrates typical applications of described networks and discusses various factors, which influence performance of these networks on chosen tasks.
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Artificial Life Simulator
Popek, Miloš ; Grulich, Lukáš (referee) ; Martinek, David (advisor)
Area of artificial life is very extensive. Simulations with reactive agents are the target of this work. Simulator of artificial life and language for definition agent's behavior are described in this work. Porposals a results of simulation made are described in this work.
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Solving of Optimisation Tasks Inspired by Living Organisms
Popek, Miloš ; Peringer, Petr (referee) ; Martinek, David (advisor)
We meet with solving of optimization problems every day, when we try to do our tasks in the best way. An Ant Colony Optimization is an algorithm inspired by behavior of ants seeking a source of food. The Ant Colony Optimization is successfuly using on optimization tasks, on which is not possible to use a classical optimization methods. A Genetic Algorithm is inspired by transmision of a genetic information during crossover. The Genetic Algorithm is used for solving optimization tasks like the ACO algorithm. The result of my master's thesis is created simulator for solving choosen optimization tasks by the ACO algorithm and the Genetic Algorithm and a comparison of gained results on implemented tasks.
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Synergetics and Self-organization in the Economy
Balúch, Pavel ; Matušková, Kateřina (referee) ; Janíček, Přemysl (advisor)
The master thesis focuses at analysis and research of synergy and self-organization in economics. The motivation for the thesis was joining Czech Republic and other nine countries to the European Union on May 1st, 2004. The primary aim was to analyse the problem and on a model example,assuming "ceteris paribus", confirm or refute the thought, that joining the European Union has positive synergic effect for newcomers. The second meaning of synergy is solved as a sub-problem in the master thesis, where the use of synergy in logistics was analysed and opportunities improving the current situation were suggested.
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Self-organization in today's society
Pampel, Petr ; Malinová, Ludmila (advisor) ; Říhová, Zora (referee)
Main goal of this bachelor thesis is to inform the reader about concept of self-organization in the society including its corporate surroundings. Thesis shortly describes coherent chaos theory for more complex sight of things. Thesis points out penetration of self-organization into human life in daily basis by introducing diverse examples from life. It introduces basic presumptions of a successful manager, who presents the main rival to self-organization. Field test consists of conducted social experiment framed in order to answer submitted hypothesis. Results are supported by processed poll regarding similar matters.
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Special Issue on the 18th International Conference on Artificial Neural Networks
Húsek, Dušan ; Neruda, Roman ; Koutník, J.
Special Issue on the 18th International Conference on Artificial Neural Networks. Neural Network World. Vol. 19, No. 5 (2009). The issue contains papers prepared specially for this issue by authors of some best evaluated papers presented on ICANGA 2008 conference. Covered are mainly following topics: Mathematical Theory of Neurocomputing, Computational Neuroscience, Connectionist Cognitive Science, Neuroinformatics, Image Processing, Signal and Time Series Processing, Reinforcement Learning, Binary Factor Analysis, Principal Component Analysis, Self-organization, Neural Network Hardware.
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Program a kniha abstrakt
Štěpánek, Petr
Book of abstracts of the 45. Microsymposium on Structure and dynamics of self-organized macromolecular systems. The scope of this meeting was to bring together scientists working in the area of synthetic polymers and copolymers and interested in self-organization.
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