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Derivative and its application in high school mathematics with use of Internet.
Trnka, Karel ; Robová, Jarmila (advisor) ; Odvárko, Oldřich (referee)
The aim of this diploma thesis is to create derivative-focused web pages as a new part of a high school mathematics educational web portal. The web portal is operated by the Department of Mathematics Education, Faculty of Mathematics and Physics, Charles University in Prague. It is primarily intended as an additional learning resource for high school students. The diploma thesis consists of two main parts. The first part describes a search for and evaluation of similar web pages in Czech, Slovak, English and Hebrew, which deal with the topic of derivative. The second part details the creation of new web pages. In creating the web pages the author integrated interactive elements based on JavaScript, and interactive applets created with use of GeoGebra software. To display mathematical expressions on the web, the author used the technology MathJax, which works with languages of the typesetting systems TeX and LaTeX.
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Possibilities of Distance Teaching the Czech Language at Primary School
Žáčková, Kateřina ; Hájková, Eva (advisor) ; Babušová, Gabriela (referee)
The diploma thesis is focused on the search for opportunities for distance learning of the Czech language at primary schools. The aim of the work is to deal in detail and find out how distance learning of the Czech language takes place at primary schools and what is the level of adoption of teaching among pupils who are learning a distance form of study. The work is divided into a theoretical part and a practical part. The theoretical part deals with a general treatise of primary education and education. It also briefly characterizes the Framework Education Programme for Elementary Education. Then it analyzes distance education in detail, briefly defines communication tools and in the end summarizes the subject Czech language and its teaching. The practical part contains two research surveys, which are structured in detail. Both qualitative and quantitative methods were used. In the first research survey, it finds out the effectiveness of Czech language distance education at selected primary schools in specific grades of primary school. It also characterizes the work of a teacher in online Czech language lessons. The second research survey examines in the form of a questionnaire how distance learning of the Czech language is carried out at primary schools. The questionnaire survey is filled out by...
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Online training of deep neural networks for classification
Tumpach, Jiří ; Holeňa, Martin (advisor) ; Kořenek, Jakub (referee)
Deep learning is usually applied to static datasets. If used for classification based on data streams, it is not easy to take into account a non-stationarity. This thesis presents work in progress on a new method for online deep classifi- cation learning in data streams with slow or moderate drift, highly relevant for the application domain of malware detection. The method uses a combination of multilayer perceptron and variational autoencoder to achieve constant mem- ory consumption by encoding past data to a generative model. This can make online learning of neural networks more accessible for independent adaptive sys- tems with limited memory. First results for real-world malware stream data are presented, and they look promising. 1
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Derivative and its application in high school mathematics with use of Internet.
Trnka, Karel ; Robová, Jarmila (advisor) ; Odvárko, Oldřich (referee)
The aim of this diploma thesis is to create derivative-focused web pages as a new part of a high school mathematics educational web portal. The web portal is operated by the Department of Mathematics Education, Faculty of Mathematics and Physics, Charles University in Prague. It is primarily intended as an additional learning resource for high school students. The diploma thesis consists of two main parts. The first part describes a search for and evaluation of similar web pages in Czech, Slovak, English and Hebrew, which deal with the topic of derivative. The second part details the creation of new web pages. In creating the web pages the author integrated interactive elements based on JavaScript, and interactive applets created with use of GeoGebra software. To display mathematical expressions on the web, the author used the technology MathJax, which works with languages of the typesetting systems TeX and LaTeX.
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Dynamic Template Adjustment in Continuous Keystroke Dynamics
Kulich, Martin ; Orság, Filip (referee) ; Drahanský, Martin (advisor)
Dynamika úhozů kláves je jednou z behaviorálních biometrických charakteristik, kterou je možné použít pro průběžnou autentizaci uživatelů. Vzhledem k tomu, že styl psaní na klávesnici se v čase mění, je potřeba rovněž upravovat biometrickou šablonu. Tímto problémem se dosud, alespoň pokud je autorovi známo, žádná studie nezabývala. Tato diplomová práce se pokouší tuto mezeru zaplnit. S pomocí dat o časování úhozů od 22 dobrovolníků bylo otestováno několik technik klasifikace, zda je možné je upravit na online klasifikátory, zdokonalující se bez učitele. Výrazné zlepšení v rozpoznání útočníka bylo zaznamenáno u jednotřídového statistického klasifikátoru založeného na normované Euklidovské vzdálenosti, v průměru o 23,7 % proti původní verzi bez adaptace, zlepšení však bylo pozorováno u všech testovacích sad. Změna míry rozpoznání správného uživatele se oproti tomu různila, avšak stále zůstávala na přijatelných hodnotách.
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