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Determination of stress resultants in closed frames
Horák, Richard ; Horníková, Jana (referee) ; Vaverka, Jiří (advisor)
The bachelor's thesis deals with the determination of the internal stress resultants (ISR) of planar beams with a closed centerline. The first part of the thesis presents a theoretical basis, which is then applied in the second part to solve three tasks. In the first task, the theory of symmetrical and antimetrical course of ISR is applied to reduce the degree of static indeterminacy of a symmetrical planar beam loaded by a symmetrical and antimetrical force system. In the second task the method of superposition is used to replace the general external load of the beam by symmetrical and antimetrical external loads. The task is further solved in the same way as in the case of the first task. The third task is solved by a general procedure with several options of released structures. Furthermore, the assumption enabling the solution of the stress energy due to the bending moment only is verified. At the end of the third task, the analytically determined values are compared with the values determined by the numerical method using the software ANSYS.
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Vlastnosti síťových centralit
Pokorná, Aneta ; Hartman, David (advisor) ; Balko, Martin (referee)
The need to understand the structure of complex networks increases as both their complexity and the dependency of human society on them grows. Network centralities help to recognize the key elements of these networks. Betweenness centrality is a network centrality measure based on shortest paths. More precisely, the contribution of a pair of vertices u, v to a vertex w ̸= u, v is the fraction of the shortest uv-paths which lead through w. Betweenness centrality is then given by the sum of contributions of all pairs of vertices u, v ̸= w to w. In this work, we have summarized known results regarding both exact values and bounds on betweenness. Additionally, we have improved an existing bound and obtained more exact formulation for r-regular graphs. We have made two major contributions about betweenness uniform graphs, whose vertices have uniform betweenness value. The first is that all betweenness uniform graphs of order n with maximal degree n − k have diameter at most k, by which we have solved a conjecture posed in the literature. The second major result is that betweenness uniform graphs nonisomorphic to a cycle that are either vertex- or edge-transitive are 3-connected, by which we have partially solved another conjecture. 1
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An effect of the hairstyle symmetry on the female face attractiveness
LAPEŠOVÁ, Tereza
Diploma thesis deals with the effect of the hairstyle symmetry on the female face attractiveness. The aim of the thesis is to experimentally find out the possible relationship between the hairstyle symmetry and the attractiveness of the female face. To map out the views of attractiveness, an online questionnaire was submitted to the respondents of both sexes to evaluate female faces with a symmetrical and asymmetric hairstyles. A total of 56 images were created, which were evaluated by the respondents in terms of attractiveness on the scale of 1-10. Most respondents slightly favored the symmetrical hairstyles, only one sample of male respondents slightly favored the asymmetric hairstyles. Since the difference in symmetrical and asymmetric variations was not statistically significant in any case, it is possible to claim that the symmetry of the hairstyle does not affect the attractiveness of the female face.
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Relationship between reactivity of immune system and facial attractiveness
Slámová, Žaneta ; Třebická Fialová, Jitka (advisor) ; Pokorný, Šimon (referee)
Previous studies have shown that physical attractiveness is one of important aspects in mate choice. Facial traits perceived as attractive may be linked to potential mate quality, or more precisely to their reproductive potential, health and ability to invest in his mate and offspring. Mating with individuals with more reactive immune system could lead to higher reproductive success and thus it is possible that visual cues facilitating detection of such traits may have evolved. The main aim of the present thesis was to test a possible association between the reactivity of the immune system response to foreign antigens (stimulated by vaccination) and facial attractiveness perceived by opposite sex individuals. Further, we investigated visual changes occurring during immune system activation. We did not find any association between measures of reactivity of immune system and perceived facial attractiveness. However, participants with activated immune system were rated as significantly less attractive and were significantly paler. Overall, our results suggest that people are sensitive to visual cues to current health status but not to overall quality of the individual. Key Words Facial attractiveness, mate choice, sexual selection; heterozygosity; symmetry; immune system, antigen; disease-avoidance,...
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Fluctuating asymmetry as a predictor of attractiveness of a human face
LAPEŠOVÁ, Tereza
This bachelor thesis deals with fluctuating asymmetry (FA) and its impact on the attractiveness of a human face. The aim of this bachelor thesis is to create a current overview on how FA affects perceived attractiveness of a human face. There are primarily explained evolutionary mechanisms related to the topic, followed by an overview of the general recourses of the partner choice among people in terms of evolutionary psychology, supplemented by an overview of specific researches and methods used in the research of attractiveness of FA in human faces.
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Relationships among characteristics perceived from photos of faces
Machová, Kamila ; Flegr, Jaroslav (advisor) ; Děchtěrenko, Filip (referee)
Estimating others characteristics from facial cues plays an important role in our everyday lives. People usually agree in these estimates well and many of these estimates correlate. Majority studies consider one or few character- istics only and their respondents usually are in narrow ranges of ages. This study is partly based on rating of 13 characteristics of 80 men's and women's faces by respondents of various ages. These data were originally collected within yet unpublished study of Jaroslav Flegr, Amy E. Blum and Šebastian Kroupa. In this study I most strikingly found out that: i) older respondents of both genders rates photos of women as more attractive, ii) respondents spend more time by rating faces considered by themselves as more attractive or nice, iii) men rate people with different eye color as more attractive and women rate others with the same eye color as nicer, iv) preferences computed by two methods do not differ much. 1
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Didactic approaches to the teaching of some mathematical topics at the primary school in teachers ́ diskurse
Vencovská, Jaroslava ; Vondrová, Naďa (advisor) ; Kvasz, Ladislav (referee)
The aim of the thesis was through a new analysis of interviews with teachers of mathematics, to describe didactic practices used by teachers while teaching selected topics (namely, proportions, linear equations, divisibility, percent, symmetry, Pythagorean theorem ) and compare them with the practices reported in textbooks and other literature. First, teaching methods, teaching forms and the mechanism of concept development by M. Hejný are given. Based on the analysis of more than thirty interview, it was found that teachers use the usual didactic practices but also create their own methods and procedures. These methods and techniques are provided for each critical issue separately in the fourth chapter of the thesis. Furthermore, the content analysis of selected textbooks is given for each topic. Identified practices of teachers which they use in their teaching practice, form the result of my work.
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Object Oriented Political Theory? A contribution of object oriented philosophy for political theory
Drozd, Václav ; Slačálek, Ondřej (advisor) ; Barša, Pavel (referee)
Václav Drozd Object oriented political theory? A contribution of object oriented philosophy for political theory Abstract (in English): This diploma thesis is concerned with the turn to materiality and object in contemporary philosophy and explores its impact on political theory. It focuses on conceptions trying to reformulate the relation between subject and object, culture and nature or human and inhuman entities - symetrical ontology of Bruno Latour, speculative realism and object-oriented ontology. The aim of the study is to identify the benefits of these aproaches for political theory. The first frame topic important for investigated theories is the relation of human and state towards complex technologies. The second general topic is the existence under conditions of anthropocene and climate change. Keywords: anthropocene, speculative realism, object, corelationism, actor, vibrant matter, technologies, symmetry, actor-network-theory, Latour
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Evaluation of stability level of athletes (14-15 years) by MFT S3 Check
Javůrková, Jana ; Kaplan, Aleš (advisor) ; Jebavý, Radim (referee)
Theme: Evaluation of stability level of athletes (14-15 years) by MFT S3 Check Aims: The aim of this diploma thesis is evaluation of stability level, sensomotor and pose symmetry of both-limb posture by MFT S3 Check system at a selected group of children attending an athletic club. I used the comparison of values between a group of girls and boys. Methodology: The level of stability, sensomotor and pose symmetry was measured in the course of the race season. The data was measured by MFT S3 Check system and further one leg stand test was used. Measurment was supplemented with a questionnaire survey. I used the comparison of values between a group of girls and boys Results: In the test MFT S3 Check the girls achieved above-average evaluation in the index values and stability sensomotorics than boys, who were evaluated in the test below average. The sum of the average values of divergences from the ideal ratio at both monitored levels were lower by 0.15 at boys. There was proved a medium dependence of body weight and BMI values on the level of stability. Shoe size, incidence of ankle injuries, nor the results of the one leg stand test had no impact on the level of stability. Key words: senzomotor, stability, symmetry, 14-15 years, athletics, testing
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