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Biological determinations of cognitive disorders
Vítek, Petr ; Šivicová, Gabriela (advisor) ; Stehlík, Luděk (referee)
As a topic of my bachelor thesis I have chosen "Biological determinants of cognitive disorders". Because of the bachelor thesis' coverage I was forced to choose only two cognitive functions - memory and thinking. This work as a whole is an attempt to combine psychological theories with neurological and psychiatric knowledge which are now popular thanks to the rapid development of imaging techniques of brain. One chapter is specifically focused on their brief summary. In the beginning specific cognitive functions are circumscribed but only two of them are taken further - memory and thinking. More space is dedicated to memory because neurological research of memory is much more complex compared to thinking. My approach is similar in both cognitive functions - at first I focus on description of normal functioning and then I classify and describe specific disorders, trying to find their neurological correlations. The second part of my bachelor thesis proposes the research of episodic memory, in which I would compare differences in its distortions from both neurological and neuropsychological perspective. Patients with delusions, pseudologia fantastica and patients with often confabulations are the target group. I tried to create as realistic design as possible. However I realize its financial...
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The identification of the risk factors and optimization of the follow-up of colorectal cancer patients and their families
Vítek, Petr ; Bureš, Jan (advisor) ; Dítě, Petr (referee) ; Zavoral, Miroslav (referee)
The identification of the risk factors and optimization of the follow-up of colorectal cancer patients and their families Introduction: Patients after colorectal cancer resection are at risk of a recurrence of neoplasia at the site of anastomosis as well as metachronic neoplasias. First-degree relatives of colorectal cancer patients also have a higher risk of the disease that is caused both by hereditary and non-hereditary common factors. Objective: The main goal of the endoscopic part of the project was to evaluate the benefit of chromocolonoscopy with a solution of methylene blue for detection of neoplastic lesions in patients after colorectal cancer resection. The epidemiological part of project was focused on the evaluation of risk factors and current follow-up of patients with colorectal cancer and their families. Methods and results:In the endoscopic part of the work we performed regular white-light colonoscopy followed by chromocolonoscopy in 62 patients after colorectal cancer resection. We used 0.1% solution of methylene blue; total chromocolonoscopy was possible in 94% (58/62) of the patients. Endoscopic and histopathological characteristics of detected lesions were assessed for both methods. Chromocolonoscopy resulted in a statistically highly significant (p < 0.001) higher detection of...
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Inclusions in fossil resins
Hähnel, Lydia ; Jehlička, Jan (advisor) ; Vítek, Petr (referee)
My Bachelor thesis, having a background research character, is focused onto amber and its inclusions. In the first part of my thesis, I give some general information on amber: its characteristics and formation, factors for the preservation of inclusions in amber, and distribution of amber. The second part gives a short describtion of methods for amber research. The main focus is on scanning electron microscopy and Raman spectroscopy. I depict some points of the research of geographical and botanical origin of the samples too. As for the last part, I try to get from the rather theoretical explanations to practical points of amber research: what information can amber and its inclusions offer to us? I summarize a few results of amber research which are devided into three groups: information about the climate in which the sample was formed, information on the evolution of life, and information on coexistence of species.
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Identification of microbial pigments in evaporites using Raman spectroscopy: implications for astrobiology
Vítek, Petr ; Jehlička, Jan (advisor) ; Marshall, Craig P. (referee) ; Vandenabeele, Peter (referee)
Raman spectroscopy is a powerful tool for identification both inorganic and organic compounds including microbial biomolecules. Together with the fact, that it is considered to be the important nondestructive instrument for use on Mars within future robotic missions, it is necessary to assess its capabilities in scenarios relevant for both Martian and terrestrial conditions. In this work, the potential of Raman spectrometry was tested - including both bench-top laboratory systems as well as portable counterparts - to detect traces of life within evaporitic matrices through biomolecular identification. Due to their chemical and physical nature resulting in optical properties, pigments are important organic compounds in Raman spectroscopic analysis using visible excitation. Hence in this work we have focused on the Raman spectroscopic identification of pigments as biomarkers with relevance for investigation of life in both extreme terrestrial and potentially extraterrestrial environments. Results of methodical work are presented in Appendices I to III, dealing particularly with β-carotene as a model carotenoid pigment. The concentration limits of this biomarker in three different evaporitic matrices (halite, gypsum and epsomite) have been determined for artificially prepared powdered mixtures alone...
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An Examination and proposal of changes in an informative system of stock control in a small company
Vítek, Petr ; Provazník, Jan (referee) ; Neuwirth, Bernard (advisor)
This bachelor thesis entitled "An Examination and proposal of changes in an informative system of stock control in a small company" proposes structure of optimal information system for stock management of small locksmith company called ZÁMEK. First part of thesis examine former information system. Second part introduces and evaluate commercially available information systems for stock control which are suitable for the company's needs. The thesis proposes information system for stock management, which will lead to improvements of in-house processes and will increase competitive advantage.
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Mechanical design of rotary satellite antenna polarization system
Vítek, Petr ; Mazal, Pavel (referee) ; Paloušek, David (advisor)
The aim of this bachelor thesis is mechanical design of rotary satellite antenna polarization system. It is a part of a mobile satellite antenna positioned on the roof rack of a passenger car. Device must be designed to achieve precise positioning and smooth running. It must also resist moisture and temperature fluctuations. For this application, there has been selected and developed solution with toothed belt. The thesis includes a selection algorithm of drive, belt and bearings. The achieved polarization angle is 180 °. The results of this paper can be used to produce a functional mobile satellite antenna polarization.
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Web Portal for Network Traffic Reporting
Vítek, Petr ; Puš, Viktor (referee) ; Tobola, Jiří (advisor)
The aim of this work is to design and implement system for a simple presentation of reports about network traffic. There is described the design and implementation of the system. Work is also represents available technology of monitoring computer networks and especially technology NetFlow.
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Modelling Gateway Redundancy Protocols
Vítek, Petr ; Grégr, Matěj (referee) ; Veselý, Vladimír (advisor)
This master's thesis report deals with the theoretical analysis of FHRP. First Hop Redundancy Protocols are network protocols which are designed to protect the default gateway and also to ensure high availability in the network by using redundancy. The reader becomes familiar with protocols VRRP, HSRP and GLBP and also learn the way how to configure them to on real Cisco devices. It also describes how implement VRRP int the simulated enviroment of OMNeT++. The result of the implementation is verified in the test topologies.
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Kytice - light installation
Vítek, Petr ; LJUBKOVÁ, Marta (advisor) ; ŽIŽKA, Tomáš (referee)
My thesis is based on a reflection of light installation inspired by Karel Jaromir Erben's collection of ballads called Kytice. I'm explaining and looking closely at selected elements from Kytice which determined my way of thinking. My goal is to find main sources of inspiration that had influenced me throughout my work, explain the dramaturgic composition of the installation as a whole and individually analyze each ballad represented in the installation.
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Influence and impact of digital film distribution on art-house cinemas
Žůrek, Tomáš ; DANIELIS, Aleš (advisor) ; VÍTEK, Petr (referee)
Digitalization of cinemas brings the biggest change in the distribution of films in the last decades and its impact affects all cinemas worldwide. The new programming options, extended range of alternative content and deeper dramaturgy are among other news which have been brought by digitalization. Are these new opportunities sufficient to make the classic and art-house cinemas competitive with multiplex?
The content of this work is analyse of the art-house cinemas in the Czech Republic. It explores the impact of digital distribution of films on these cinemas. Financing and technological changes which cinemas had to go through during the process of digitalization is the main focus of the work. The overall evaluation of the impact of digitization on the art-house cinemas is based on a comparison of art-house cinemas and their data relating to the digitalization and results of the questionnaire which has been sent to selected cinemas.
The last part contains a brief comparison of the process of digitization of cinemas in the Czech Republic, The UK and Slovakia.
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