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Information Combination Analysis in Multi-Channel Speaker Verification
Procházka, Jan ; Plchot, Oldřich (referee) ; Mošner, Ladislav (advisor)
In this work, we deal with the analysis and comparison of information combinations of multi-channel speech data for a speaker verification task. Three levels/representations were chosen for data fusion: signal-level, embedding-level, and score-level. At the signal level, spatial filters (beamforming) are implemented. Speech recordings serve as input to a neural network (ECAPA-TDNN architecture) that extracts embeddings, vector representations of the speaker. The vectors are further compared by cosine similarity module that results in scores, real numbers. Score-level fusion achieves the best relative improvement against single-channel recordings (up to 70 %). Embedding-level fusion provides the most consistent results for different recording conditions.
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Analýza průběhu spalování akustickým signálem
Procházka, Jan
The presented diploma thesis monitors and evaluates the combustion process in conventional internal combustion engines according to the measurable and observable parameters, such as acoustic signal specifically. The first part of thesis focuses on the classification and use of internal combustion engines. Moreover, the combustion of the mixtures in cylinders is described as well as individual components of the engine that monitor and measure the combustion process. In the next part, the issue of acoustic emission is specifically addressed followed by the analysis of the combustion process using th acoustic signal. In conclusion, the use of the acoustic signal as an analytical tool for the evaluation of the combustion process is assessed according to the obtained results.
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Renaissance concept of perspective and ways of its presentation
PROCHÁZKA, Jan
The bachelor thesis consists of theoretical part and practical part. The theoretical part will cover the perspective basics, especially the invention of so called linear or analytical perspective in renaissance. The text will also tackle didactic approach to this issue. The practical part builds on the theoretical part. It's aim is to create a serie of three presentation boards (minimal size - A1), which will intelligibly and freshly summarize the theme of linear - analytical perspective, and also present a graphic approach, which will be attractive for pupils in lower-secondary schools. The work will take into account the pursuit of a new didactic approach and quality graphic design.
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Types of Personality, Lifestyle and Mental Hygiene of Employees in a Particular Organization
PROCHÁZKA, Jan
This thesis focuses on types of personality, lifestyle and mental hygiene of employees in particular organization. The aim of this thesis is to optimize the performance of the organization based on the analysis of personality types, lifestyle and mental hygiene through self-knowledge, knowledge of others, improvement of lifestyle and optimization of employees' mental hygiene. Literary research is based on books and articles about personality typology, psychology, lifestyle, mental hygiene and self-management written by Czech and foreign authors. The practical part contains data from the questionnaire survey. This data is used to analyze the company and make subsequent recommendations. The result of the work is an overview of the current situation in the selected organization with respect to personality typology, lifestyle and mental hygiene levels and several recommendations for employees regarding healthy nutrition, exercise, sleep, relaxation and mental hygiene. The result of this work is a summary of actual situation of chosen organisation with regards to typology of personality, life style standard and mental hygiene and numerous proposals and recommendations for employees on healthy nutrition, exercise, sleep, relaxation and mental hygiene. However, the resulting recommendations and knowledge of personality typology can also be beneficial for other organizations and their employees.
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Awareness and Attitudes of UK FTVS Students to Discgolf
Vlček, Tomáš ; Procházka, Jan (advisor) ; Janák, Vladimír (referee)
Title: Knowledge and attitudes of UK FTVS students to disc golf. Aim: The aim of this bachelor's thesis is to find out what attitudes students of Faculty of Physical Education and Sports of Charles University have to disc golf and what awareness they have of the sport. Methods: The electronic survey method was used in this work. Through surveying FTVS UK students, data about their awareness of disc golf and their attitudes towards this sport were collected. Results: The research found that most students have a basic knowledge of disc golf. More detailed knowledge of this sport is less common. Students' attitudes are most often positive or neutral. Half of the students have experience playing. Keywords: Awareness, attitudes, disc golf, marketing research, Faculty of Physical Education and Sport
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NG2-glia proliferation and differentiation following CNS injuries
Kirdajová, Denisa ; Anděrová, Miroslava (advisor) ; Procházka, Jan (referee) ; Novák, Ondřej (referee)
NG2-glia proliferation and differentiation following CNS injuries Abstract NG2 glia display wide proliferation and differentiation potential under physiological and pathological conditions. They are very well known as precursors of oligodendrocytes, however, following central nervous system (CNS) injury they play an important role in regeneration. For this reason, we examined these features following different types of brain disorders such as focal cerebral ischemia (FCI), cortical stab wound (SW), and demyelination (DEMY) in young (3-months-old) mice, in which NG2 glia are labeled by tdTomato under the Cspg4 promoter. In the case of FCI, the factor of age was also studied using 18-months-old mice. To address these issues, we employed many techniques on tissue/cellular levels, such as single-cell RT- qPCR, single-cell/bulk RNA-sequencing, immunohistochemistry, and the patch-clamp technique in situ. First, such approach enabled us to distinguish two main populations (NG2 glia, oligodendrocytes), each of them comprising four distinct subpopulations. Next, the expression profiling revealed that a subpopulation of NG2 glia expressing GFAP, a marker of reactive astrocytes, appears transiently after FCI. However, following less severe injury, namely the cortical SW and DEMY, subpopulations mirroring different...
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Immunomodulatory potential of Sertoli cell progenitors in Xenopus tadpoles during the healing of amputated tail
Mertová, Irem ; Krylov, Vladimír (advisor) ; Procházka, Jan (referee)
A cell culture of common Sertoli and peritubular myoid cells progenitors derived from the testes of male X. tropicalis, called XtiSC, was established in the Laboratory of Developmental Biology. XtiSCs exhibit similar properties as more well-known mesenchymal stem cells that are used in cell therapy for their immunomodulatory and proregenerative properties. Microinjection of XtiSC into the dorsal vein of the tail of the tadpoles has increased macrophage numbers 7 days after tail amputation (dpa), both in controls and in tadpoles after depletion of macrophages by the application of clodrosomes. Macrophage depletion also reduces the migratory ability of XtiSC to the site of tail amputation. Macrophage depletion also led to a reduction in the number of satellite cells 1 dpa. On the seventh day after tail amputation and XtiSC injection, there was a significant increase in their number compared to the control group without XtiSC injection. Using DAF-2DA probe, nitric oxide production was confirmed by injected XtiSC and at the injury site. For future research of the proliferation, differentiation and migration of satellite cells in vivo, a vector expressing EGFP under endogenous Pax7 promoter and Katushka-RFP under gama-crystalline promoter was created and integrated into the X. tropicalis genome using...
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Economics of HC ČSOB Pojišťovna Pardubice
Každan, Daniel ; Procházka, Jan (advisor) ; Štědroň, Bohumír (referee)
Title: Economics of HC ČSOB Pojišťovna Pardubice Objectives: The main goal is to use the theory of strategic management in selected hockey club HC ČSOB Pojišťovna Pardubice, and to propose recommendations for sporting, economic and social areas. Methods: To analyze the current situation of the club will be used case study method of analysis of documents and interviews with club management. Furthermore, the analysis will use internal and external factors sports club which also contains PEST analysis. The SWOT analysis will then reveal strengths and weaknesses of the club. Results: Proposals and recommendations for improvement and streamlining of activities in sports, economic and social areas. Keywords: Sports Management, PEST analysis, Porter's five forces model, external analysis, internal analysis, financial analysis, SWOT analysis
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Use of grants for development of the field hockey sports club Slavia Praha
Reinosová, Adéla ; Janák, Vladimír (advisor) ; Procházka, Jan (referee)
Title: Use of grants for development of the field hockey sports club Slavia Praha Objectives: The main purpose of this thesis was to set up preferred goals for the field hockey sports club Slavia Praha to ensure its successfull development, with an emphasis on the use of grants provided by the City of Prague. Another goal is to create a list of available grant programs for sports clubs in Prague. Methods: Two analysis methods were applied in this study. The first one was based on the analysis of the documents related to the application for available grants. Thanks to this method the overview of the available grants opportunities was created. The second method was SWOT analysis regarding the field hockey sports club Slavia Praha which contributed to the setting up of new partial and strategic task for the positive development of the club. Results: The field hockey sports club in Prague, which own or long term lease the sports real properties, can apply to the Ministry of Education, Youth and Sports for grants. The other field hockey sports clubs can apply for grants of the Prague City Hall or its town disctricts. The main results of this study were the set up of the strategic goals for the following 3 years period in relation to the provided grants and creation of sub-tasks to meet operational...
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