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Dominance Strategies in Romantic Couples' Interactions
Průšová, Denisa ; Weiss, Petr (advisor) ; Procházka, Ivo (referee) ; Poláčková Šolcová, Iva (referee)
This doctoral thesis combines three major topics of how Romantic Couples verbally and nonverbally Communicate Dominance. We research their behavioral dynamics from Evolutionary and Communication perspectives. Against current psycho-social scientific theories, we do suggest that people that are stereotypically seen as submissive, those using other than direct, active, and aggressive strategies, can achieve their will as well. They simply use behaviors that researchers do not consider as dominant (powerful) behaviors and look for them. We explore the whole spectrum of dominance strategies and their context of where, when, and how they are used. We chose a highly qualitative approach during the data collection and analysis part. We adapted a psychotherapy method for research purposes, our Relationship Drama, to overcome significant limitations that nonverbal and communication research struggles with. Therefore, we could see and further qualitatively analyze real couple's behavior in their real typically appearing conflict interaction. Those are described in the theoretical part of this thesis, in chapter 1. Findings from yet unpublished studies that were presented at conferences and are relevant to specific topics are included as well as one case study illustrating dominance ascription complexity. The...
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Nutritional care and eating habits of people living with HIV
Tomanová, Michaela ; Starnovská, Tamara (advisor) ; Procházka, Ivo (referee)
The relationships between nutritional status, infectious diseases, and the immune system suggest that nutrition is an indisputable cofactor in the progression of human immunodeficiency virus (HIV) infection. One of the main complications of HIV infection is multifactorial malnutrition, however, overweight and obesity have become more frequent. A specialized nutritional intervention should be an integral part of routine medical care for people living with HIV. It has been shown that the incidence of wasting syndrome and critical malnutrition among people living with HIV has significantly decreased simultaneously with the side effects of modern antiretroviral drugs. The side effects of modern antiretroviral therapy are much less common than previous generations of drugs. On the other hand, the prevalence of obesity and other chronic diseases associated with it has increased significantly among people living with HIV. The practical part describes and evaluates the monitoring of eating habits of 10 people living with HIV. The aim of this work was to provide a summary of information about proper nutritional care for this population, to evaluate the eating habits of the respondents and to come up with a potentional nutritional intervention and education. Lack of macro and micronutrients and poor eating...
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The influence of oral hormonal contraceptive use on female sexuality: the evolutionary perspective
Klapilová, Kateřina ; Weiss, Petr (advisor) ; Procházka, Ivo (referee) ; Blažek, Vladimír (referee)
The proposed thesis is comprised of eleven papers connected by the employment of the evolutionary psychological approach in research on various aspects of human sexuality. The aim of the first monothematic part is to demonstrate the evolutionary-psychological approach to one recent phenomenon in female sexuality - the use of oral contraceptives (OC). OC use has been shown to suppress psychological mechanisms that are considered to be adaptive in the fertile period of the natural menstrual cycle. In particular, OC users' ratings of male stimuli that provide the cues of genetic quality and compatibility are lower in comparison with normally cycling women. Moreover, the increase in sexual desire and in the prevalence of proceptive behaviour observed during mid-cycle in normally cycling women is diminished. However, the impact of this phenomenon on mate-choice and relationship dynamics in an ecological context has not been studied. In the first study, we have analyzed the data of Czech women obtained via representative sampling within the Czech National Survey of Sexual Behavior. Results indicated that normally cycling women had a significantly higher number of one-night stands during the last year in comparison to OC users even when living in a long-term relationship. OC usage was also shown to have...
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Sexual and psychological aspects of the lives of male sex workers in Prague
Bar - Johnson, Michael ; Weiss, Petr (advisor) ; Pastor, Zlatko (referee) ; Procházka, Ivo (referee)
Prague, the Czech Republic is a popular sex tourism destination where sex work is decriminalized and young men offer sexual services at low prices relative to countries in Western Europe. This quantitative survey aims to identify some of the demographic and personality characteristic of these young men in the sex industry. Internet escorts (N=20) and sex workers in bars and clubs (N=20) completed the survey anonymously in the Spring of 2011. The results show that while sex workers in clubs often have troubled pasts and were forced into sex work in order to survive, the larger groups of sex workers in Prague is made up of internet escorts who have backgrounds which are not atypical for the average Czech youth. Personality test results however revealed both groups to have strong asocial characteristics in comparison to other Czech youth. The results of the measures of mental health (anxiety and depression) indicate that simply working as a male sex worker per se has little relationship to the healthy psychological functioning of these young men, but only in the case where they identify as homosexual. Identifying as a heterosexual is associated with a higher level of substance use. Those identifying as bisexual however reported suffering significantly levels of anxiety within the clinical range and...
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Sexual behavior and preferences in evolutionary perspective.
Bártová, Klára ; Weiss, Petr (advisor) ; Procházka, Ivo (referee) ; Lindová, Jitka (referee)
The thesis is divided into three parts. The first part is focused on the main theories of human mating strategies, such as sociosexual orientation and sexual strategies theory, which emphasizes intersexual differences as a result from the asymmetry of parental investment, and strategic pluralism theory, which highlights intrasexual variation in mating behavior. The second part consists of one review article published in the Encyclopedia of Evolutionary Psychological Science and one original research article published in The Journal of Sex Research, a peer-reviewed journal. In this part we explored possible evolutionary origins and adaptive values of paraphilic interests and their prevalence in the Czech population. The third part consist of one article published in the peer-reviewed journal Personality and Individual Differences and two research studies which are currently under peer-review in two international journals. The main aim of this part was to test whether individual differences in femininity-masculinity, Big Five personality traits, and propensity to sexual excitation and inhibition are associated with individual sociosexual orientation. A further aim was to test whether attention towards sexual stimuli is affected by an individual's level of sociosexual orientation and by depressive...
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Analysis of the GlobeImposter ransomware
Procházka, Ivo ; Komosný, Dan (referee) ; Martinásek, Zdeněk (advisor)
The aim of this diploma thesis is to analyze an instance of the GlobeImposter ransomware extracted from an affected device. The first part outlines various types of malware and ransomware and includes a description of encryption mechanisms and key distribution systems. It also discusses possible approaches of static and dynamic analysis of malware samples and requirements for test environments. The practical part describes the source of the malware sample, the physical and virtual test environment and the results of the static and dynamic analysis of the GlobeImposter ransomware. The final part discusses the results and the possibility of implementing a decryptor for the analyzed GlobeImposter ransomware.
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Natural aging and early precipitation stages in Al-Mg-Si alloys
Lamač, Marcel ; Čížek, Jakub (advisor) ; Procházka, Ivan (referee)
Modern aluminium alloys 60xx are rich in sillicon and magnesium. They are easy to machine, are weldable, and can be precipitation-hardened, especially se- ries 6061, which we focus on in this thesis. Series 6061 alloy is currently the most general-purpose industrially used aluminium alloy. The purpose of this thesis is to analyze the natural and artificial aging of these alloys through the utilization of positron annihilation spectroscopy and coincidence Doppler broadening of anni- hilation radiation methods. Our goal is precise analysis of precipiation processes, which occur due to natural or artifical aging of the alloy. Although artifical aging in aluminium alloys is a well researched area, understanding and description of key mechanisms controlling the natural aging especially in the early stages of pre- cipitation is not yet sufficiently explained. We use modern methods of positron annihilation spectroscopy to understand and confirm our clustering hypotheses. 1
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Microstructure and thermal stability of ultra fine grained Mg-Zn-Y alloys
Vlasák, Tomáš ; Čížek, Jakub (advisor) ; Procházka, Ivan (referee)
The aim of this diploma thesis is to investigate microstructure and thermal stability of ultra fine grained magnesium alloys. The thesis first summarises methods using plastic deformation in order to achieve ultra fine grained structure that are used to process metals. Then experimental methods employed in the experimental part including microhardness testing, scanning electron microscopy and positron annihilation spectroscopy are described. Brief summary of previous research on MgZnY alloys strengthened by quasicrystalline phases and Mg22Gd alloys is given. Finally, results of experimental investigation of MgZnY alloys with various Zn/Y ratios and Mg22Gd alloy are discussed. These results suggest that presence of phases in MgZnY alloys depend on Zn/Y ratio, hardness of these alloys depends on Zn content and that rapid cooling of MgZnY alloys annealed at 500 řC lead to significant increase in volume fraction of quasicrystalline icosahedral phase. In the second section of the experimental part thermal behaviour of Mg22Gd alloy is investigated. Furthermore, formation of GdH2 particles in Mg22Gd is examined and attributed to reaction of hydrogen decomposed from water vapour with gadolinium in areas rich in gadolinium. Finally, significant hardening of Mg22Gd alloy processed by high pressure torsion has been...
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Gas electron multiplier based photon detection for Cherenkov imaging applications
Krištof, Michal ; Finger, Michael (advisor) ; Procházka, Ivan (referee)
In the thesis we focus on the methods used to detect photons in Ring Imaging Cherenkov detectors, their description and the basics of the physical phenomena which lie behind them. We provide a brief description of the gaseous detector types and we describe the development of the new Thick GEM based detection system for the RICH-1 of the COMPASS experiment. We provide a detailed description of the latest tests and the convoluted route of the research done in the field. We review the ThGEM-based detector performance in comparison to the other methods of detection. Powered by TCPDF (www.tcpdf.org)
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