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Hierarchical Coding of Moving Pictures
Špaček, Milan ; Rášo, Ondřej (referee) ; Schimmel, Jiří (advisor)
Bachelor‘s thesis deals with hierarchical coding – scaling – of moving pictures in currently widely used compression algorithms MPEG-2 and MPEG-4. Scaling is the process whereby the encoded data stream is divided into graduated layers, adapted especially to the possibilities of transmission media and capabilities of terminal devices. The content of the base layer is a signal with reduced quality. The content of one or more extension layers is a supplementary picture information, completing the signal to a full quality form. The decoder, depending on its abilities and external circumstances, can decode only the relevant layers from the received bitstream. The thesis focuses in the theoretical part on the detailed description of encoding and decoding video signal according to MPEG standards using three types of scalability. In the concrete, the spatial, qualitative SNR and Fine granular scalability are mentioned. In the practical part of thesis was created an educational application in Matlab environment with its own graphical user interface, which implements the functions performing spatial, qualitative SNR and Fine granular scalability. Based on the user-specified input parameters, it performs scaling the image and then displays the outputs of individual layers after scaling and after the image reconstruction. The input of the programme, in which a hierarchical coding is done, is the image in bitmap format with any size in RGB format.
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Scaling of arterial input function in DCE-MRI
Holeček, Tomáš ; Kolář, Radim (referee) ; Kratochvíla, Jiří (advisor)
Perfusion magnetic resonance imaging is modern diagnostic method used mainly in oncology. In this method, contrast agent is injected to the subject and then is continuously monitored the progress of its concentration in the affected area in time. Correct determination of the arterial input function (AIF) is very important for perfusion analysis. One possibility is to model AIF by multichannel blind deconvolution but the estimated AIF is necessary to be scaled. This master´s thesis is focused on description of scaling methods and their influence on perfussion parameters in dependence on used model of AIF in different tissues.
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Support for Predictive Application Autoscaling on Kubernetes Platform
Fridrich, David ; Pavela, Jiří (referee) ; Rogalewicz, Adam (advisor)
The goal of this work is to create a new interface that will allow users to process collected metrics for scaling according to a formula (e.g. average value, mathematical equations, conditional statements) defined by a user. It also allows users to use an external interface for connecting KEDA to a component that defines its own scaling behavior, with which the user can achieve more complex solutions like automated predictive scaling of applications on Kubernetes platform. I solved the selected problems by modifying the KEDA core by implementing a new interface for scaling according to a custom formula with arithmetic and conditional expressions and the ability to connect a custom external remote method for calculating metrics using gRPC technology. The created solution provides a more flexible way to process metrics and also allows user to implement their own methods.
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Factors influencing intraspecific scaling of metabolic rate
Trubelová, Zuzana ; Starostová, Zuzana (advisor) ; Storch, David (referee)
The relationship between metabolic rate and animal body size of the animal has been studied for more than hundred years. Recently, attention of scientists moved from the interspecific to the intraspecific level. The work focuses on the intraspecific scaling of metabolism. When plotting the metabolic rate against body mass during ontogeny the resulting line often exhibits one or more breaks. Why these breaks (and thus reduction the metabolic rate) occur hasn't been fully explained. It is assumed that can be due to certain factors that affect an individual during development. Some of these factors came from the most famous of several hypotheses attempting to explain the scaling of metabolic rate. These hypotheses include the Metabolic Theory of Ecology (MTE), the Metabolic Level Boundaries (MLB), the Cell model and the Dynamic Energy Budget (DEB) hypothesis. There are several factors that could affect individuals during ontogeny. These include internal factors, which result from the internal processes within the body. These factors are often interrelated with each other in different ways; therefore, it is unlikely to choose only one particular factor which affects metabolic rate. The most frequently studied factors are changes of cell size and changes in the proportion of metabolically active...
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STM study of growing 1D nanostructures composed by III and IV group atoms
Kučera, Michael ; Ošťádal, Ivan (advisor) ; Mysliveček, Josef (referee)
In the presented work we study Al and Sn on a Si(100)2$\times$1 surface by means of STM. Peculiarities of displaying and morphology of metallic structures are investigated. Utilizing the STM to investigate Al and Sn, we obtain the growth characteristics for various coverage and temperatures at deposition. It is shown, that island size distribution is scalable for both metals and has a qualitatively different character. In order to interpret the growth characteristics and obtain unknown microscopic parameters, a new software tool for kinetic Monte Carlo (kMC) simulations of aluminum was conceived.
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PHYSICAL SKILLS OF 5th CLASS -CHILDREN IN VILLAGES AND CITIES AND THEIR COMPARISION
Junková, Marie ; Hronzová, Marie (advisor) ; Černý, Martin (referee)
The goal of this bachelor's thesis was to determine the level of physical skills of children in 5th grade and to compare the level of skills of children in primary schools in villages and cities. Due to the vastness of the topic only gymnastic skills were chosen for the purpose of this research. The gymnastic skills were selected based on the curriculum of physical education for 5th grades of primary schools. The skills chosen were: somersault, somersault back, hand stand and vault. The testing was conducted at selected primary schools during classes of physical education with help from physical education teachers. Children were classified by rating scales; these rating scales were created separately for each physical skill. Graphic elaboration of the results was created to help evaluate the research. Furthermore we were interested whether there are more children with apparent overweight in primary schools in cities or in primary schools in villages. We also wanted to distinguish to what extent these children affected the results of the research.
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Allometric scaling of cellular morphologies in evolution and ecology of unicellular algae
Mezník, Daniel Heliodor ; Neustupa, Jiří (advisor) ; Woodard, Kateřina (referee)
Allometry is a type of relationship between two changing traits of an organism's body. One of the most studied types is morphological allometry, which deals with the change of shape in relation to the size of an organism. The surface area to volume ratio is an immensely important feature that impacts many aspects of a cell's life, and there are ways of changing it. Unicellular algae are a diverse group with many specifics and a wide-ranging impact on the global ecosystem. The goal of this thesis is to introduce allometry and its types and applications with an emphasis on morphologic allometry and changes to the surface area to volume ratio, using specifically unicellular algae as model organisms.
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BLDC Motor Hil Real-Time Simulation On ZYNQ
Bartík, Ondřej
This paper is focused on real-time simulation of BLDC motor on SOC ZYNQ device. The simplified model of BLDC motor in Matlab/Simulink is introduced. Next, the scale method based on physical principles of motor is described. This method is used to decrease the calculation complexity. Last part of this paper is mentioned for FPGA implementation and the results comparison.
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Even Versus Odd Scale in Online Questionnaire
Baloušková, Tereza ; Remr, Jiří (advisor) ; Hendl, Jan (referee)
1 Abstract This diploma thesis subjects on rating scales that measure respondent's value of the agreement with given statement. Particularly it focuses on a number of scale points and usage of mid-point and option "Don't know". Due to the fact, there is not an optimal number of points that scale should contain the author focuses on comparing scales of different length. This work includes research that uses four types of the questionnaire to test differences between odd and even scales of different lengths. The thesis shows that share of extreme points is based on scale length. With the use of shorter scales, respondents are more likely to choose extreme points. Based on respondents' answers, the difficulty to choose from scale options is similar in both even and odd scales. Option "Don't know" was mostly chosen by indecisive and poorly-informed respondents when the even scale with above-mentioned option was used. In the case of using an odd scale, the mid-point was chosen also mainly by indecisive respondents, so odd scales should be combined with option "Don't know" for better detection of neutrality. Keywords Rating scale, attitude measurement, odd scale, even scale, mid-point, number of scale points, Web survey, online questionnaire
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Scaling of spatial activity in bats
Křemenová, Jana ; Lučan, Radek (advisor) ; Storch, David (referee)
2 ABSTRACT The degree of spatial activity, especially the home-range size, is one of the basic biolog- ical characteristics of animals and whether it has enough resources is crucial for the survival and reproduction of the individual. Therefore, it is not surprising that many studies trying to make clear the effect of various ecological and morphological variables and explain the varia- bility of space activities. Bats are a group of mammals, for which until recently, existed only few information about their spatial activity. However, due to the miniaturization of technology and the use of radiotelemetry amount of information rapidly increasing. The aim of this study was to assemble the most complete information about the home- range size and foraging distance of bats and analyze the effect of variables that can influence the spatial activity. From published papers I collected data on 106 species representing 8 fami- lies. The influence of 6 variables (weight, wing loading, aspect ratio, food specialization, colony size, primary productivity of environment) on home-range size and average foraging distance of bat was analysed by phylogenetic regression (PGLS). The best predictor of the home-range size is the primary productivity of the environment, food specialization and body size. The best explanation of...
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