National Repository of Grey Literature 171 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Field protocol for in-situ biophysical parameters collection
Šudová, Markéta ; Brodský, Lukáš (advisor) ; Červená, Lucie (referee)
Field protocol for in-situ biophysical parameters collection Abstract The main aim of diploma thesis is to design a unified protocol intended for collecting of in-situ biophysical parameters of vegetation based on an up-to-now published literature as well as on my own experimental measuring. The key for measuring of high- quality field data, that are suitable for a subsequent validation of remote sensing products, is an implementation of unified rules as well as all the phases of data collecting, a recommended preparation before the very measuring, the choice of a sampling scheme and a processing of measured data. Based on an accessible literature the current methods of LAI data measuring were evaluated and the basic protocol parameters were defined. For designing of a proper parameterization of this protocol an experimental field measurement was carried out. A determination of a suitable number of partial measurements within ESU is given by a relationship between the number of partial measurements and MSE value. The sampling schemes stated in a literature as well as my own designed sampling schemes are subsequently tested in order to determine a suitable sampling scheme. Based on achieved MSE values the most suitable sampling scheme that was later verified in field measuring was evaluated. Based on a field...
The effect of sampling period error on frequency analysis
Pietrowicz, Daniel ; Marada, Tomáš (referee) ; Zuth, Daniel (advisor)
This thesis will be focused on signal measurement in connection with digitization and analysis inaccuracy of sampling peroid effect. Brief narration of frequency analysis and description of Matlab and his capabilities with this issue. Then creation procedure for simulation model of analog signal and his fault digitization via sampling period. Systematic comparation of this effect on inaccuracy of sampling period on frequency analysis.
Experimental Software Musical Instrument on Android Platform Combining Sampler, Synthesizer and Sequencer
Kučera, Karel ; Kavan, Jan (referee) ; Dlouhý, Dan (advisor)
The aim of this bachelor thesis is the realization of the application as an experimental software musical instrument on the Android platform. The implementation is partly based on the draft elaborated in semester work. The application is designed for tablets and smartphones. It combines functions of sampler, sequencer and synthesizer and contains built-in effects. With this features, it is possible to create new sounds, sequantions and songs. The applications is programmed by visual programing language Pure Data. The graphic interface is created by the MobMuPlat platform. The thesis is consists of three parts. The first part is a theoretical introduction, where are discussed, the theory of digital audio signal processing, principles and types of sound signal synthesis, effects and electronic instruments. Furthermore, the Pure Data and MobMuPlat platform features. The second part is an updated design of the graphical interface and there are discussed the functions of individual graphic elements. The third part describes implementation of the application by Pure Data
Implemetation of signal processing problems for teaching purposes
Ševčík, Zdeněk ; Rajmic, Pavel (referee) ; Mangová, Marie (advisor)
This thesis is focused on Fourier series, phasor diagram, signal resampling and amplitude modulation. All of there problems are analyzed in theoretical part of thesis. Here are derived all three form of Fourier series, described signal sampling, decimation and interpolation. Next thesis is focused on signal modulation and closer deal with amplitude modulation of harmonic and inharmonic signal. In practical part is example of calculation of Fourier siries for a specific signal, example of signal resampling and example of amplitude modulation for harmonic and inharmonic signal. Objective of practical part is creates programs focused on these problems. Programs should be interactive and their purpose is demonstrate the problem to students.
Tone and Chord Recognition as an Android Application
Kucharovič, Oliver ; Černocký, Jan (referee) ; Szőke, Igor (advisor)
The aim of this work is to recognize tones and chords on any musical instrument using the microphone on Android mobile devices. The app scans or records the sounds which are analyzed. It writes to a visual representation which is similar to the musical notation. The work describes the problems of recognition and the solution of the problem using fast Fourier transformation and analysis of the spectrum of volumes. Work describes the theory of music and the training of individual tones. The application was subjected to user tests and recognition accuracy tests. The conclusion includes tests results and statistics from the Google Play publication.
Effectivity and utilisation of different methods of moths research
Palivcová, Lucie ; Tropek, Robert (advisor) ; Vrba, Pavel (referee)
Sampling of data on moth communities is essential for our better understanding of their biology. This thesis is focused on different moth sampling methods, with a special aim to light catching as the most effective way how to attract them. Various sampling methods are described together with review of published knowledge of their effectivity, as well as advantages and disadvantages. Individual sampling is suitable for studying of preselected particular species. Interception traps are used for studying of flying corridors. Selected groups of moth can be attracted by various baits or caught by colored pan traps, bait traps and pheromone traps. Common and highly useful is attracting of moths using light. Light source can significantly affect sampling efficiency. The most species and individuals are attracted by shortwave light, but particular preferences are species and sexes specific. Understanding of methodology and moth behavior can improve study of them and should bring new knowledge of their conservation or management of moth pests.
Sampling from finite population in economic problems
Krepl, Jan ; Červinka, Michal (advisor) ; Kraicová, Lucie (referee)
Survey sampling constitutes a basic method of obtaining values of population parameters. Social sciences including economics use survey sampling to collect information which is then used for research purposes. The goal of this thesis is to describe sample surveys in general and to focus on basic probability sampling schemes. For the empirical part, the author selected several suitable theses of IES FSV UK students where sample survey data was used. These theses serve as an illustration of described methods in theoretical part. At the end, the possibility of applications of probability sampling is discussed. Powered by TCPDF (www.tcpdf.org)
Development of laboratory exercises for subject the Signals and systems analysis
Doleček, Josef ; Mucha, Ján (referee) ; Zvončák, Vojtěch (advisor)
The bachelor thesis deals with basic operation with signals and, using demonstrative applications in Matlab, it should explain these operation to CASS (Signals and Systems Analysis) students. In the theory part continuous-time signals (signals classification, periodic signals, Fourier series), complex numbers, sampling and discrete-time signals (operation of convolution and correlation) are described. Practical applications explain: square signal harmonics synthesis, two discrete-time signals convolution and cross-correlation, object distance detection by radar using cross-correlation, complex model of harmonic signal and signals sampling.
The sampling methodology for GM plants unintentionally present in the environment
Ovesná, Jaroslava ; Kučera, Ladislav ; Sovová, Tereza ; Mitrová, Katarína ; Pouchová, Vladimíra
In this methodology, sampling of plants from agricultural crops(corn, soybean, canola and potato) is defined to assess the presence of unauthorized GM plants in the environment.The methodology is applied mainly in the field of inspection controls of the compliance with Act no.78/2004. The sampling and collected samples must represent to a maximum extent the crops of the controlled part of the field (land parcel or land parcel portion). The basic applications of the methodology include:(a) low portion of unauthorized GM plants(seed contaminated with GM plants unauthorized for cultivation), (b) monitoring of the presence of unauthorized GM plants on land parcel, where there was such an occurence recorded in previous years (for example, plants growing on the field from seeds or tubers from the so called "soil´s seed bank").
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Modern compression formats of digital image
Eder, Radek ; Přinosil, Jiří (referee) ; Číka, Petr (advisor)
This bachelor thesis deals with the problems of digital image compression. There are described basic color models RGB and YCbCr and conversion between them. Described are currently used codecs for digital images. JPEG compression format is discussed in more detail, which currently is still the most widely used format for digital photos. Described is a process of digitizing the image using the JPEG standard, which includes sampling, quantization and coding. Described are also formats JPEG2000, PNG and WebP. End of chapter are described methods for subjective and objective evaluation of the quality of digital image compression. Among the subjective methods include Double Stimulus Impairment Scale (DSIS) and Double Stimulus Continuous Quality Scale (DSCQS), then the objective methods include Mean Squared Error (MSE), Peak Signal to Noise Ratio (PSNR) a Structural Similarity (SSIM). Application was created as part of the work that allows you to compress the source image to the selected formats. It also allows a qualitative evaluation of compression and store the results to the file.

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