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3 results on '"Boštík, Tomáš"'

2. Provozování elektrovozidel a bezpečnost chodců

Author

Matuška, Jaroslav, Boštík, Tomáš, Matuška, Jaroslav, and Boštík, Tomáš

Abstract

Tato práce je zaměřena na provozování různých typů elektrovozidel a s tím spojené riziko ohrožení bezpečnosti všech účastníků silničního provozu, zejména chodců, převážně pak nevidomých či slabozrakých. Analýza se věnuje současnému stavu legislativy a provozu elektrovozidel. Dále autor navrhuje opatření, která by mohla přispět ke zvýšení bezpečnosti. Tyto návrhy jsou následně zhodnoceny., This thesis is focused on an electric vehicles traffic and related increased risk of danger to all road traffic users, especially for pedestrians, largely for those who are blind or particullary sighted. The analysis deals with the current state of legislation and operation of electric vehicles. Author also suggests measures, which should contribute to increase of safety.These suggestions are further evaluated., Dopravní fakulta Jana Pernera, Student obhájil bakalářskou práci a uspokojivě zodpověděl otázky zkušební komise.

Published
2017

3. Antenna Arrays for Tactical Communication Systems: A Comparative Study.

Author

Bartyzal, Jan, Boštík, Tomáš, Kovács, Peter, Mikulášek, Tomáš, Puskely, Jan, Raida, Zbyněk, Sláma, Libor, Vorek, Jiří, and Wolanský, David

Subjects
ANTENNA arrays, TELECOMMUNICATION, COMPARATIVE studies, BANDWIDTHS, COMPUTER simulation, ELECTRIC power consumption
Abstract

In this paper, we give a comparative study of several planar antenna concepts for reliable long range links in a tactical environment. The antenna elements are studied in terms of their electrical properties (bandwidth, reflection coefficient and radiation characteristics) and construction (robustness and material consumption). First, we model single antenna elements to investigate if they meet the requirements. Second, we arrange the elements with the best features into 2x2 arrays. Computer simulations of the arrays are verified by measurements. Finally, we formulate recommendations for large array (8x8 or 16x16 elements) synthesis to achieve the required properties. [ABSTRACT FROM AUTHOR]

Published
2011

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