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Biomedical applications of polycaprolactone nanofibrous mats
Dvořák, Pavel ; Přibyl,, Jan (referee) ; Zajíčková, Lenka (advisor)
The diploma thesis deals with the treatment of polycaprolactone (PCL) nanofibers. PCL fibers were subjected to the deposition of plasma amine polymers in a low pressure pulsed radiofrequency capacitively coupled discharge using cyclopropylamine monomer (CPA). Collagen as an extracellular matrix (ECM) protein was immobilized and cell proliferation on the modified nanofiber surface was monitored. Untreated PCL fibers were also subjected to the deposition of an antibacterial copper layer, and the fibers were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDX).
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Image fusion in thermal spectrum
Petrásek, Daniel ; Dvořák, Pavel (referee) ; Mekyska, Jiří (advisor)
In this paper, there is mentioned necessary theory of image processing and fusion, which belongs to a group of the most used ways of image processing in the present. In the first part there is mentioned basic findings of image and electromagnetic spectrum. In the second part there is discussed some facts of infrared radiation, thermal cameras, then it is continued with elementary methods of image focus evaluation, segmentation and noise thresholding. In next part there is introduced scheme of image fusion system and basic idea of its implementation. In the end of this thesis there is described implemented system of image fusion, detailed description of reached results, thesis rating and few ideas of improving whole system.
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Temperature control und monitoring of laboratory kiln
Dvořák, Pavel ; Marada, Tomáš (referee) ; Němec, Zdeněk (advisor)
The aim of this bachelor work is to create a laboratory training which is made for teaching and demonstration laboratory furnace temperature control with applications created in Control Web 6.1 The role includes the regulation and capture waveforms measured and desired temperatures, allows the timing of the required temperature. The application is processed for example burning of small products. Allows archiving of temperature distribution and also monitoring the instantaneous values of the desired and measured temperatures with the possibility of switching heating via the Internet. The thesis presents a proposal for linking laboratory furnace with a computer using the input output module DataLab
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Content Based Photo Search
Dvořák, Pavel ; Beran, Vítězslav (referee) ; Španěl, Michal (advisor)
This thesis covers design and practical realization of a tool for quick search in large image databases, containing from tens to hundreds of thousands photos, based on image similarity. The proposed technique uses various methods of descriptor extraction, creation of Bag of Words dictionaries and methods of storing image data in PostgreSQL database. Further, experiments with the implemented software were carried out to evaluate the search time effectivity and scaling possibilities of the design solution.
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Principals, switching functions and routing techniques in computer networks
Dvořák, Pavel ; Pelka, Tomáš (referee) ; Polívka, Michal (advisor)
This bachelor thesis consider main principles and function of active network components. Mainly is intent to component working on the third level of referential model ISO/OSI, router. There are described its main parts and more closely charactered routing protocols. Then is verified the ability of dynamic routing to react to failure in the network and there is measured the reaction time of crossing to secondary route when using different routing protocols. Another part of the thesis is focused on the questions of Quality of Service (QoS) and its support in computer networks. There are explored various ways of the QoS configuration on the routers and the proper of them is chosen and applied to the test network.
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Drainage circular machine
Dvořák, Pavel ; Mana, Jaroslav (referee) ; Kašpárek, Jaroslav (advisor)
This thesis deals with a design of a circular draining machine. The aim is to design a machine that complies with the respective requirements. The machine is assembled in a line for the preparation of paper stock, which is further processed for final paper production.
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Study of rehabilitation alternatives of the selected part of the sewerage network
Dvořák, Pavel ; Prax,, Petr (referee) ; Raclavský, Jaroslav (advisor)
The theme of this bachelor thesis is elaboration, evaluation and comparison of alternative ways of solving the reconstruction of a part of a sewer network. For this purpose, this bachelor thesis is divided to two parts. In the first part, there is a researchof the metods used for repair and reconstruction of a sewer network, with the greatest emphasis being placed on methods of renovation, whose goal is to improve the functional and operational properties of the sewer. There are also descriptions of technological procedures, usability area and the basic technical parameters from manufacturers. In the second part, the acquired knowledge is applied in the solution of the reconstruction of the real sewer network, namely in the urban part of Znojmo, Znojmo - město, the residential area of Pražská street. Two solutions have been developed. At first variant only trenchless technologies were considered, in the second variant a recovery of the pipeline by open trench.
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Segmetation of tomographic data in 3D Slicer
Korčuška, Robert ; Dvořák, Pavel (referee) ; Mikulka, Jan (advisor)
This thesis contains basic theoretical information about SVM-based image segmentation and data classification. Basic information about 3D Slicer software are presented. Aspects of medical images segmentation are described. Workplan and implemetation of SVM method for MRI segmentation in 3D Slicer sofware as extension module is created. SVM method is compared with simple segmentation algorithms included in 3D Slicer. Quality of segmentation, based on SVM, tested on real subjects is experimentaly demonstrated.
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