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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 65
Jaroš, Martin , Musil, Jindřich , Haviar, Stanislav
Interrelationships among macrostress, microstructure and mechanical behavior of sputtered hard Ti(Al,V)N films

The article reports on the influence of a compressive macrostress in the Ti(Al,V)N films on their mechanical properties, structure, microstructure, and resistance to cracking. The macrostress is controlled by the energy Ebi delivered into the growing film by bombarding ions. The Ti(Al,V)N&#x...

Zítek, Michal , Zeman, Petr , Kotrlová, Michaela , Čerstvý, Radomír
Impact of Al or Si addition on properties and oxidation resistance of magnetron sputtered Zr–Hf–Al/Si–Cu metallic glasses

Amorphous quaternary Zr–Hf–Al/Si–Cu thin-film metallic alloys were prepared by non-reactive magnetron co-sputtering using four unbalanced magnetrons equipped with Zr, Hf, Al or Si, and Cu targets. The Zr, Hf and Al or Si targets were sputtered in dc regimes while the Cu target ...

Haviar, Stanislav , Čapek, Jiří , Batková, Šárka , Kumar, Nirmal , Dvořák, Filip , Duchoň, Tomáš , Fialová, Markéta , Zeman, Petr
Hydrogen gas sensing properties of WO3 sputter-deposited thin films enhanced by on-top deposited CuO nanoclusters

Magnetron-based gas aggregation cluster source (GAS) was used to prepare high-purity CuO (cupric oxide) nanoclusters on top of sputter-deposited thin film of tungsten trioxide (WO3). The material was assembled as a conductometric hydrogen gas sensor and its response was tested and evaluated....

Vlček, Jaroslav , Kolenatý, David , Kozák, Tomáš , Houška, Jiří , Čapek, Jiří , Kos, Šimon
Ion-flux characteristics during low-temperature (300 °C) deposition of thermochromic VO2 films using controlled reactive HiPIMS

The ion-flux characteristics at a substrate position and the corresponding discharge characteristics were investigated during controlled low-temperature (300 °C) reactive HiPIMS depositions of thermochromic VO2 films onto conventional soda-lime glass substrates without any substrate bias voltage and without...

Vychytil, Jan , Holeček, Miroslav
Development of a constitutive model of soft tissues for FE analyses using a bottom-up approach

Fajnerová, Iveta , Greguš, David , Hlinka, Jaroslav , Nekovářová, Tereza , Škoch, Antonín , Zítka, Tomáš , Romportl, Jan , Žáčková, Eva , Horáček, Jiří
Could Prolonged Usage of GPS Navigation Implemented in Augmented Reality Smart Glasses Affect Hippocampal Functional Connectivity?

Augmented reality (AR) glasses with GPS navigation represent the rapidly evolving technology which spares (and externalizes) navigational capacities. Regarding the expected everyday usage of this device, its impact on neuroplastic brain changes and navigation abilities should be evaluated. This study&...

Mertl, Jiří , Žáčková, Eva , Řepová, Barbora
Quality of life of patients after total laryngectomy: the struggle against stigmatization and social exclusion using speech synthesis

In this article, we deal with the problem of potential stigmatization and social exclusion of people that have voice/speech problems due to neck cancer, especially those who have lost their voice because of total laryngectomy, and we analyze how this potential stigmatization could&...

Scholtz, Ľubomír , Šutta, Pavol , Calta, Pavel , Novák, Petr , Solanská, Michaela , Müllerová, Jarmila
Investigation of barium titanate thin films as simple antireflection coatings for solar cells

Barium titanate (BaTiO3, BTO) is a perovskite class material of remarkable dielectric, ferroelectric and ferromagnetic properties. Our previous studies on optical properties of BTO thin films proved high visible transmittance and sharp absorption edge at ~ 300 nm. Therefore the usage of ...

Lyu, W. , Bońkowski, T. , Hynčík, L.
Development of a simple helmet finite element model

The developed helmet is tested for 8 impact configurations (4 impact directions for both anvils). The ECE R22.05 regulation [9] defines, that the maximum acceleration must not exceed 275 g and the maximum HIC must not exceed 2400 for each impact and the helmet fulfils the...

Jansová, M. , Malotín, T. , Křen, J. , Votápek, P. , Lobovský, L. , Hynčík, L.
A comparative analysis of treatment of a supracondylar periprosthetic femoral fracture under axial load and torque

A total knee arthroplasty (TKA) is in rare cases followed by an extra-articular fracture of distal femur. One type of fracture is a simple extra-articular fracture (A1 according to Schewring and Meggitt). It can be stabilized only by surgical treatment. Several implant types are&#x...

Špička, Jan , Hajžman, Michal , Bielak, Ondrej , Masák, Jan
Sensitivity analysis of the crack evaluation for steam turbine casings loaded by pressure and temperatures

The operation of steam turbines is related to the extreme conditions such as high pressure and temperature, which can lead to fatigue issues and subsequent undesirable problems. This paper is focused on the methodology for the fracture analysis of turbine casings. The evaluation me...

Cimrman, Robert , Novák, Matyáš , Kolman, Radek , Tůma, Miroslav , Vackář, Jiří
Isogeometrická analýza ve výpočtech elektronových struktur

In electronic structure calculations, various material properties can be obtained by means of computing the total energy of a system as well as derivatives of the total energy w.r.t. atomic positions. The derivatives, also known as Hellman–Feynman forces, require, because of practical c...

Romportl, Jan
Polomnožiny a emergence v umělé inteligenci

The principle of emergence is, today, a key paradigm in the area of the development of systems of artificial intelligence. This article sketches the prospects for tackling emergence in artificial intelligence using Vopěnka’s alternative set theory applied to a model of interaction betwe...

Cimrman, Robert , Novák, Matyáš , Kolman, Radek , Tůma, Miroslav , Plešek, Jiří , Vackář, Jiří
Studie konvergence izogeometrické analýzy založené na Bézierově extrakci ve výpočtech elektronových struktur

Behavior of various, even hypothetical, materials can be predicted via ab-initio electronic structure calculations providing all the necessary information: the total energy of the sys- tem and its derivatives. In case of non-periodic structures, the existing well-established methods for electronic...

Meurer, Aaron , Smith, Christopher P. , Paprocki, Mateusz , Čertík, Ondřej , Kirpichev, Sergey B. , Rocklin, Matthew , Kumar, Amit , Ivanov, Sergiu , Moore, Jason Keith , Singh, Sartaj , Rathnayake, Thilina S. , Vig, Sean , Granger, Brian E. , Muller, Richard P. , Bonazzi, Francesco , Gupta, Harsh , Vats, Shivam , Johansson, Fredrik , Pedregosa, Fabian , Curry, Matthew J. , Terrel, Andy R. , Roučka, Štěpán , Saboo, Ashutosh , Fernando, Isuru Dilanka , Kulal, Sumith , Cimrman, Robert , Scopatz, Anthony Michael
SymPy: symbolické výpočty v Pythonu

SymPy is an open source computer algebra system written in pure Python. It is built with a focus on extensibility and ease of use, through both interactive and programmatic applications. These characteristics have led SymPy to become a popular symbolic library for the scientific&#x...

Vychytil, Jan , Špička, Jan , Hynčík, Luděk , Manas, Jaroslav , Pavlata, Petr , Striegler, Radim , Moser, Tomas , Valášek, Radek
Nový přístup v modelování čela vozidla pro numerické analýzy nehod s chodci

In this paper a novel approach in developing a simplified model of a vehicle front-end is presented. Its surface is segmented to form an MBS model with hundreds of rigid bodies connected via translational joints to a base body. Local stiffness of each joint is calibrated&...

Krofta, Ladislav , Havelková, Linda , Urbánková, Linda , Krčmář, Michal , Hynčík, Luděk , Feyereisl, Jaroslav
MKP model popisující rozložení napětí ve svalu levator ani během vaginálního porodu

The objective of this study was to develop a sophisticated MRI-based model to simulate changes in the levator ani muscle (MLA) during vaginal delivery. The female pelvis and the fetal head were modeled by rigid bodies. The MLA and obturator were represented by Ogden material&#...

Hynčík, Luděk , Bońkowski, Tomasz , Vychytil, Jan
Virtual hybrid human body model for PTW safety assessment

Bońkowski, Tomasz , Šoltés, Lukáš , Hynčík, Luděk , Kottner, Radek , Kochová, Petra
Leather for motorcyclist garments: Multi-test based material model fitting in terms of Ogden parameters

Špička, Jan , Vychytil, Jan , Hynčík, Luděk
Numerical analysis of a pedestrian to car collision: Effect of variations in walk

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 65