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Optimization of Circadian Rhythms and Sleep Patterns
Zídková, Tereza ; Ehler, Edvard (advisor) ; Nejedlý, Adam (referee)
Optimization of circadian rhythms and sleep patterns The abstract of the bachelor thesis This bachelor thesis summarizes current scientific knowledge on the relationships between circadian rhythms, sleep, and light, and analyzes their mutual interactions influencing the health of organisms, particularly human society. Sleep is among the most crucial determinants of overall health, and the influence of natural or artifficial light can effectively optimize it on one hand, but desynchronize it to the detriment of overall organism functioning on the other. Modern humans are increasingly exposed to artifficial lighting due to spending the majority of their time indoors, leading to a deficiency in natural light globally. This is associated with numerous problems ranging from disruptions in biological rhythms to various other civilization-related illnesses. In summarizing this issue, some recommendations are made for optimizing and personalizing both artificial and natural sunlight to improve sleep, which is a significant biological marker for optimal health.
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The effect of the circadian rhythm on the work of a paramedic
ŠEDIVÝ, Martin
The topic of the bachelor's thesis is "The effect of the circadian rhythm on the work of a paramedic". Most rescuers may not even realize the great sacrifice they make by performing this demanding profession. This is a very respectable job, which is burdened with a huge amount of stress and a demanding work schedule. The combination of these two unfavorable factors may have a negative impact on the health of rescuers over a longer period of time. The theoretical part deals with the explanation of the term circadian rhythm, sleep and its structure, nutrition, physical activities, blue light, caffeine, health complications that are the result of a disturbed circadian rhythm and the effect of circadian rhythmicity on work efficiency. The research part was implemented using semi-structured interviews, and 12 informants who are employed at the South Bohemian Region Medical Rescue Service in the position of paramedic were included in the research investigation. Each informant was asked the same questions, which were then evaluated using the coding technique and were divided into several categories and subcategories. The main topics for responding the objective of the work were health complications of shift work, adaptation to shift work, principles of proper nutrition and sleeping habits. Research has shown that the circadian rhythm affects the work of a paramedic, but it is very individual and affects each paramedic in a different way. Alternating irregular shifts are difficult to get used to, and working at night is not ideal from a physiological point of view. Most of the rescuers confirmed to us that they had a lower work performance and a longer reaction time during the night hours. Furthermore, night shifts have a negative effect on the health of workers, and health complications may occur years later, which may not allow rescuers to continue to perform their work as well as before.
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Sleeping outdoors II.
Bendák, Jan ; Kleberc, Lukáš (referee) ; Klímová, Barbora (advisor)
The work partially develops the bachelor's thesis Sleeping Outdoors, and continues with the creation of practical wooden structures for rest and sleeping. The project deals with the organization of adventure and sleepover events and further explores suitable environments for occasional and everyday sleeping outside. It motivates to reevaluate comfort and presents ways of being outside during the day and at night.
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Visible blindness in the urban world society's relation to light now and then
Pata, Václav ; Sedlák, Michal (advisor) ; Gajdošíková, Pavla (referee)
The diploma thesis is focused on city in time and age of artificial lighting. It takes the issue of light pollution as its starting point. Elementary sources and consequences of over- lighting are used as a base for the Forgotten Dark worksheets. The sheets were created in collaboration with Veřejný sál Hraničár (Public Hall Hraničář) as an educational material for the gallery cycle Light. Together with the sheets, a need to widen my knowledge and apply it to a specific situation arose. I picked Obchodní dům Prior and Kulturní středisko Corso (Shopping Mall Prior and Culture Center Corso) in the neighborhood of Krásné Březno for that purpose. The pick of the place directed the development of the themes of the theoretical part of the thesis. The middle part of the thesis is trying to show contemporary city from two essential angles. Firstly, I tried to answer the question about sources of the shape contemporary city has taken upon itself. The rest is focused on building public spaces in regard to their nighttime flow. The final chapter is exploring the object of Corso. At first It is trying to take a look at the context of the city part of Krásné Březno, then it is taking a look at the city part in context of Ústí nad Labem. The gathered information is used for a presentation of possible future of...
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Advanced scoring of sleep data
Jagošová, Petra ; Novotná, Petra (referee) ; Ronzhina, Marina (advisor)
The master´s thesis is focused on advanced scoring of sleep data, which was performed using deep neural network. Heart rate data and the movement information were used for scoring measured using an Apple Watch smartwatch. After appropriate pre-processing, this data serves as input parameters to the designed networks. The goal of the LSTM network was to classify data into either two groups for sleep and wake or into three groups for wake, Non-REM and REM. The best results were achieved by network doing classification of sleep vs. wake using the accelerometer. The statistical evaluation of this best-designed network reached the values of sensitivity 71,06 %, specificity 57,05 %, accuracy 70,01 % and F1 score 81,42 %.
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Sleep scoring using EEG
Holdova, Kamila ; Smital, Lukáš (referee) ; Ronzhina, Marina (advisor)
This thesis deals with wavelet analysis of sleep electroencephalogram to sleep stages scoring. The theoretical part of the thesis deals with the theory of EEG signal creation and analysis. The polysomnography (PSG) is also described. This is the method for simultaneous measuring the different electrical signals; main of them are electroencephalogram (EEG), electromyogram (EMG) and electrooculogram (EOG). This method is used to diagnose sleep failure. Therefore sleep, sleep stages and sleep disorders are also described in the present study. In practical part, some results of application of discrete wavelet transform (DWT) for decomposing the sleep EEGs using mother wavelet Daubechies 2 „db2“ are shown and the level of the seven. The classification of the resulting data was used feedforward neural network with backpropagation errors.
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SLEEPING OUTDOORS
Bendák, Jan ; Tomalík, Michael (referee) ; Tobola, Ondřej (advisor)
The work deals with the influences acting on humans when staying in the outdoor environment and their effects on our daily rhythm. It focuses closely on the ritual of sleeping outside. It strives for a natural understanding of the laws of nature through exposure to the influences that affect us open air on a daily basis. Seasons, weather, light and other factors are determining elements for the work. The result of understanding and combining these principles are outdoor structures designed to accomodate groups or individuals overnight. The objects should serve as a platform for creating a community that will further develop these principles autonomously. The aim is to present the positives of sleeping outside, delimit against the trend of unsustainable growth and to provide an example of how to deal with this tendency through the perception of nature.
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Obstructive sleep apnea detection using polysomnography
Smrčková, Markéta ; Mézl, Martin (referee) ; Králík, Martin (advisor)
This thesis attempts to find an alternative method for automatic detection of sleep apnea using polysomnographic data. The first part is focused on introduction to lungs anatomy and physiology of breathing, sleeping and cardiac system. The second part describes the process of sleep examination and particular components of polysomnographic data. The third part is focused on realization of specific method for sleep apnoea detection, application on real data and results evalutation.
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Post psychedelic relief
Zdvořáček, Tomáš ; Vaněk, Vojtěch (referee) ; Gabriel, Michal (advisor)
The aim of the bachelor thesis was to create a sculptural form of the Greek Morpheus. In Greek mythology, Morpheus is the son of the sleep god Hypnosis - he is the god of dreams, responsible for what we dream about. Morphea portrays the work as a "graphics card of the sleep construct", an intelligent entity living on the edge of human consciousness. The Greeks imagined him as a little boy with wings on his temples. He understands Morpheus' work as a column of energy processing billions of dreams simultaneously. As part of the bachelor's thesis, a two-and-a-half-meter-high column was modeled and cast into a laminate, covered on the surface with a finely modeled relief in the post-psychedelic style. In searching for the formal language of the relief, the author used the system of mutual connections from the computer game Factorio.
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Detection of Sleep Apnea in Adults
Vrana, Vojtěch ; Králík, Martin (referee) ; Sekora, Jiří (advisor)
The goal of this work is to construct a device detecting apneic respiration pauses during sleep. The most common cause of apnea pauses is obstruction of the airways, eg, airway collapse. Apnea leads to a deterioration in the quality of sleep and increases the risk of cardiovascular disease. The controller is designed on the Arduino Uno development board. The whole measuring device consists of two circuits for measuring the external manifestations of movement of respiratory muscles and a microphone for measuring the presence of air flow.
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