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Electronic Drum Control Module
Doležal, Karel ; Růžička, Richard (referee) ; Šimek, Václav (advisor)
This paper deals with development and construction of an electronic drum module. The purpose of the device is to capture signals from an electronic drumkit and to produce sound accordingly. Firstly, a protoype with no sound output is constructed to demonstrate an ability to capture input signals. Based on its function, parameters for a final device are determined. Then, electronic component selection and design of printed circuit boards is described with an aim to maximalize polyphony and minimize latency of the sound generator. After that, firmware with software mixing algorithm is designed. Lastly, testing and measurement of real device parameters is performed.
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Quadrocopter Navigation and Control
Doležal, Karel ; Orság, Filip (referee) ; Herman, David (advisor)
This paper focuses on autonomous navigation of AR.Drone quadrocopter in outdoor environment. The goal is to follow a specified route and land autonomously on a platform placed at the destination. Firstly, the AR.Drone platform, its development kit and sensor extension with GPS and a magnetic compass are described. Then, the navigation architecture of a control program is presented describing important blocks and its' individual tactics. Localization of the landing platform is based on its color. The video is also used to detect nearby obstacles using optical flow calculation suppressing the quadrocopter movements and to avoid the greater changes in the image. The control program implementation is then tested in real environment and the results are presented.
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Characterization of the role of cytokinins and abscisic acid during abiotic stress response
Přerostová, Sylva ; Vaňková, Radomíra (advisor) ; Havel, Ladislav (referee) ; Doležal, Karel (referee)
Abiotic stresses significantly reduce crop yield, causing serious problems in agriculture. Understanding the mechanisms of plant stress responses could contribute to the improvement of their stress tolerance. Phytohormones play an important role in plant stress defence as well as in regulation of growth and development. This thesis summarizes the results published in four articles focused on the evaluation of the effects of phytohormones during abiotic stresses, namely salinity, drought, ZnO nanoparticle treatment and cold stress. The main emphasis is put on abscisic acid as the key regulator of water status and stress defence, and on cytokinins, which regulate plant growth and stabilize photosynthetic machinery. Cytokinins act antagonistically to abscisic acid. Our results showed that abscisic acid is a general abiotic stress response regulator. Stress- tolerant plants (halophyte Thellungiella salsuginea or winter line of einkorn wheat Triticum monococcum) had a higher basal level of this hormone, especially in shoot meristematic tissues (apices, crowns), than stress-sensitive plants. Stress-tolerant plants reacted faster and in a more flexible way to stress. Active cytokinins were negatively affected by stress, which was associated with growth suppression. The drought stress study showed that...
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Characterization of the role of cytokinins and abscisic acid during abiotic stress response
Přerostová, Sylva ; Vaňková, Radomíra (advisor) ; Havel, Ladislav (referee) ; Doležal, Karel (referee)
Abiotic stresses significantly reduce crop yield, causing serious problems in agriculture. Understanding the mechanisms of plant stress responses could contribute to the improvement of their stress tolerance. Phytohormones play an important role in plant stress defence as well as in regulation of growth and development. This thesis summarizes the results published in four articles focused on the evaluation of the effects of phytohormones during abiotic stresses, namely salinity, drought, ZnO nanoparticle treatment and cold stress. The main emphasis is put on abscisic acid as the key regulator of water status and stress defence, and on cytokinins, which regulate plant growth and stabilize photosynthetic machinery. Cytokinins act antagonistically to abscisic acid. Our results showed that abscisic acid is a general abiotic stress response regulator. Stress- tolerant plants (halophyte Thellungiella salsuginea or winter line of einkorn wheat Triticum monococcum) had a higher basal level of this hormone, especially in shoot meristematic tissues (apices, crowns), than stress-sensitive plants. Stress-tolerant plants reacted faster and in a more flexible way to stress. Active cytokinins were negatively affected by stress, which was associated with growth suppression. The drought stress study showed that...
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Use of the craniosacral therapy on cervical spine
DOLEŽAL, Karel
As a topic of my bachelor thesis, I chose the use of craniosacral cervical spine therapy. I chose the theme for this reason because I am interested in it and it is a topic which is relatively unknown among students of physiotherapy. Cervical spine problems can be caused from many reasons. Like a poor head position during sitting on a computer, in a car or in a bad sitting, resulting in overloading the muscles and cervical spine. Another difficulty is the upper cross syndrome, which is caused by muscle dysbalance in this area. It is an imbalance between the side and front muscles of the neck or the imbalance between the shoulder and the mammary muscles. A major problem of many people is that they have headin a wrong position during sleep and their head isn t in the extensio of the spine. The muscles in this position try to keep the head in a physiological position with the help of the muscular tension, and after falling asleep the muscle tension release and the head drops. Frequent overloading can cause trigger points. Further, between the problems of the cervical spine belong also the spasm of suboccipital muscles, which causes headaches and dizziness. To prevent or eliminate these problems, it is possible to use craniosacral therapy that leads to total body regeneration and relaxation. This is a gentle manual therapy. In the theoretical part I deal with the craniosacral method, a description of its history, a craniosacral concept and a craniosacral system, where I describe, among others, the craniosacral rhythm and the movement of the cranial bones. In the next part I describe parts of the craniosacral system, including cerebrospinal fluid, cerebrospinal diapers, connective tissue and soft tissues and fascia. In the next chapter I deal with palpation, which is the basis of this and other manipulation techniques. In the last chapter of the theoretical part of my thesis I deal with the cervical spine, where I briefly describe its structure and function and then i focus on the description of the frequent problems in the cervical spine that we can encounter in practice. In the practical part of my work I performed an in-and-out kineziological analysis, and during the therapy I used the methodology of questioning, observation and examination of palpation. Input and output data were compared at the end of the study. The research itself was conducted for 6 weeks after the initial kinesiological analysis was performed in total 5 therapies and the last sixth week was performed an output kinesiological analysis. The research group consisted of 5 patients aged 22-74 years. I did a therapy that consisted of a set of touches. Among the individual therapies, patients should have done a set of stretching exercises I have entered. I observe the patients during my therapies, and I performed a control palpation of the in patients before their third therapy. The obtained results show that the craniosacral method has an analgesic and relaxing effect on the cervical spine and can be used either as a separate therapy or in combination with other methods within physiotherapy. This work could serve as an educational resource for healthcare professionals and also for the general public, especially for people who are interested in alternative treatment methods.
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Biologické účinky a metabolismus cytokininů typu cis-zeatinu v rostlinách
Gajdošová, Silvia ; Motyka, Václav (advisor) ; Brzobohatý, Břetislav (referee) ; Doležal, Karel (referee)
Cytokinins (CKs) are plant hormones that affect a wide range of developmental processes. The most important group of isoprenoid CKs represent zeatin and its derivatives occurring in two, cis and trans, positional isomers. Whereas trans-zeatin (transZ) was found to be a highly bioactive substance, cis-zeatin (cisZ) has been viewed for years as inactive or weakly active adjunct to its corresponding trans counterpart playing only an insignificant physiological role in plants. The occurrence of cisZ-type CKs was found in a great number of plant species with especially high levels identified in species of family Poaceae. All tested derivatives of cisZ, surprisingly including also zeatin-N9-glucoside, delayed dark-induced chlorophyll degradation in oat and wheat leaf segments. Additionally, cisZs effectively induced cell division in CK-dependent tobacco callus. The most pronounced activity was exhibited by cisZ riboside (cisZR) in the two types of CK bioassays. Metabolism of both zeatin isomers differed in short-term as well as in long-term experiments, which was supported also by various affinity of CK degrading enzyme, CK oxidase/dehydrogenase (CKX), to individual cis and trans isomers. Primary root enlargement of Arabidopsis seedlings was inhibited by cisZR in the same or similar way as by transZR,...
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Quadrocopter Navigation and Control
Doležal, Karel ; Orság, Filip (referee) ; Herman, David (advisor)
This paper focuses on autonomous navigation of AR.Drone quadrocopter in outdoor environment. The goal is to follow a specified route and land autonomously on a platform placed at the destination. Firstly, the AR.Drone platform, its development kit and sensor extension with GPS and a magnetic compass are described. Then, the navigation architecture of a control program is presented describing important blocks and its' individual tactics. Localization of the landing platform is based on its color. The video is also used to detect nearby obstacles using optical flow calculation suppressing the quadrocopter movements and to avoid the greater changes in the image. The control program implementation is then tested in real environment and the results are presented.
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Electronic Drum Control Module
Doležal, Karel ; Růžička, Richard (referee) ; Šimek, Václav (advisor)
This paper deals with development and construction of an electronic drum module. The purpose of the device is to capture signals from an electronic drumkit and to produce sound accordingly. Firstly, a protoype with no sound output is constructed to demonstrate an ability to capture input signals. Based on its function, parameters for a final device are determined. Then, electronic component selection and design of printed circuit boards is described with an aim to maximalize polyphony and minimize latency of the sound generator. After that, firmware with software mixing algorithm is designed. Lastly, testing and measurement of real device parameters is performed.
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