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Vnímání role zeleně v intravilánu města
VLÁŠEK, Jakub
This diploma thesis called "Perception of the role of greenery in urban areas" deals in the introductory part with climate change and adaptation measures to mitigate its impact. In the next part, he moves on to the role and function of greenery in this process, focusing on the specifics of cities, especially in connection with the mani-festation of the urban heat island. Its aim is to find out, in the form of a questionnaire survey, the attitude of residents and visitors to the city of České Budějovice to climate change, the state of the living and natural environment in the city, their relationship to urban greenery and identify what they perceive as insufficient or unpleasant in this area. Based on the statistical evaluation of the survey, recommendations for local self-government are formulated in the conclusion.
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Method of Green function for boundary value problems for ODR
Héda, Ivan ; Rokyta, Mirko (advisor) ; Pražák, Dalibor (referee)
The main aim of this work is to summarize the basic knowledge of method which is using Green's functions for solving boundary value problems for linear diffe- rential equations. These functions will be defined and, with some not very strong presumptions, uniquely constructed. This method is primarily derived for solving problems with homogenous boundary conditions. However it will be shown that there is no more presumtions needed to use this method to solve problems with non-homogenous linear boundary conditions. As a main consequence of preceding existence and uniqueness of solution for relatively wide class of linear boundary problems will be provided. 1
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Method of Green function for boundary value problems for ODR
Héda, Ivan ; Rokyta, Mirko (advisor) ; Pražák, Dalibor (referee)
The main aim of this work is to summarize the basic knowledge of method which is using Green's functions for solving boundary value problems for linear diffe- rential equations. These functions will be defined and, with some not very strong presumptions, uniquely constructed. This method is primarily derived for solving problems with homogenous boundary conditions. However it will be shown that there is no more presumtions needed to use this method to solve problems with non-homogenous linear boundary conditions. As a main consequence of preceding existence and uniqueness of solution for relatively wide class of linear boundary problems will be provided. 1
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Elastodynamic Properties and Signal Propagation in Materials within Time Reversal Acoustics
Farová, Zuzana ; Převorovský, Zdeněk ; Kůs, V. ; Dos Santos, S.
In this paper we present related parts of elastodynamic theory, which are a keynote for the wave propagation through the medium. We describe the basic material characteristics - strain tensor and stress tensor, also we provide the relations of these tensors and describe the derivation of the well-know Lame's parameters. Further, we deal with the theory of Green functions, its properties, and its form for di®erent sources. Finally, we propose and explain the so-called experimental deconvolution, quite newly developed technique, based on time reversal acoustics with the knowledge of Green function and using the Fourier transform.
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Experimental Signal Deconvolution in Acoustic Emission Identification Setup
Farová, Zuzana ; Převorovský, Zdeněk ; Kůs, V. ; Dos Santos, S.
Identification of acoustic sources is a great deal and the most important problem emerging in nondestructive testing. We present the basics of time reversal (TR) Acoustic Emission (AE) principle and point out the advantages of AE nondestructive testing for localization and classification of acoustic sources. This approach provides the tool for the defect localization by means of the reversal wave focusing in nonlinearity position in the material under consideration. Also, using TR operator to AE signal, we obtain convolutional signal in the closest neighborhood of acoustic source, which gives us the pure image of the real characteristics of AE source after deconvolution process applied to the signals detected.
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