Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.00 vteřin. 
Effect of strain rate on the mechanical properties of materials
Gajdošík, Matej ; Forejt, Milan (oponent) ; Jopek, Miroslav (vedoucí práce)
Taylor Anvil Test method is used for the investigation of material properties under dynamic loading conditions. The thesis presents a complete process of development, assembly, and testing of a new testing apparatus aimed at achieving a symmetric impact of two material samples in motion. The device is tested in two configurations, results of both are described. Material tests of spruce wood were conducted and compared to results obtained from the classic Taylor canon. Substantial differences are observed and described. Conducted simulations of symmetric impact utilizing the spruce material model have not proven to represent practical experiments, hinting at required changes to the model.
Measurement of Symmetric Cipher on Low Power Devices for Power Grids
Fujdiak, R.
The symmetric ciphers are often used in low power devices for its low requirements. This article provides a measurement of AES-128 cipher, which should be used for secure communication in power grid (smart grid) networks. We are using as low power devices the microcontroller MSP430 from Texas Instruments. These measurements, deal in this article, should help with implementation of the whole concept of encryption. Concretely, it shows the space left for the other algorithms (as for example elliptic curves algorithm for key distribution, communication protocols etc.)

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