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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 22
Zemčík, Robert , Bartošek, Jan , Kroupa, Tomáš
Impact reconstruction and localization on laminated structure

Finite element model of an airfoil segment made of laminated glass fiber composite is created. The model is calibrated using data from experimental tests, namely the modal characteristics and vibrations measured with laser sensors in selected locations. Passive monitoring method is applied&#...

Ťoupal, Tomáš , Šedivá, Blanka

This paper is focused on the possible methodologies for comparing two time series by estimating the probability that both time series will increase or decrease (of course in probability) in the same time. It can be considered as the specific measure of dependence (more precise...

Matas, Richard , Syka, Tomáš , Hurda, Lukáš
Experimental investigation and numerical modelling of 3D radial compressor stage and influence of the technological holes on the working characteristics

The article deals with a description of results from research and development of a radial compressor stage with 3D rotor blades. The experimental facility and the measurement and evaluation process is described briefly in the first part. The comparison of measured and computed charac...

Janoušek, Jakub
Comparison of known existence results for one-dimensional beam models of suspension bridges

The aim of this paper is to present our recent existence and uniqueness results for a one-dimensional damped model of a suspension bridge and compare them to previous results for either damped or non-damped one-dimensional beam models.

Jedlička, Karel , Charvát, Karel
Visualization of big data in agriculture and rural development

Big data technology (BDT) is a new technological paradigm that is driving the entire economy, including low-tech industries such as agriculture where it is implemented under the banner of precision farming (PF). Big data analytics system will then provide pilot managers with highly ...

Vostřák, Marek , Tesař, Jiří , Houdková Šimůnková, Šárka , Hruška, Matěj
Možnosti kontroly hloubky protavení během laserového přetavení žárově stříkaných povlaků

Laser remelting of thermally sprayed coatings is a promising possibility how to improve their functional properties. However, it requires precise control of processing parameters to achieve desired depth of remelting. In this study, the near-infrared (NIR) camera is used to measure the ...

Vostřák, Marek , Houdková Šimůnková, Šárka , Česánek, Zdeněk
Vliv procesních parametrů na strukturu a vlastnosti laserově povlakovaného WC-NiCrBSi

In this study, the influence of main laser cladding parameters on the final microstructure of cladded WC-NiCrBSi coating is discussed. As the used powder is the blend of 60% tungsten carbide spherical particles and 40 % NiCrBSi matrix, the carbides’ morphology and distribution in&#...

Houdková Šimůnková, Šárka , Vostřák, Marek , Česánek, Zdeněk , Smazalová, Eva , Glanc, Aleš
Mikrostruktura a vlastnosti tepelně ovlivněného HVOF nástřiku povlaku Hastelloy C-276

The influence of heat treatment on the microstructure, mechanical and sliding wear properties of Hastelloy C-276 HVOF sprayed coatings was evaluated. The applied furnace heat treatment modified the coatings microstructure, leading to precipitation hardening and oxidation of inter-splat boundaries, but...

Tomiczková, Světlana , Ježek, František
Geometrický software a výuka geometrie

In the contribution we talk about using geometric software in the courses of geometry at University of West Bohemia. We present a few examples we use in the practical lesson of course Differential geometry.

Marek, Patrice
Efekty změn pravidel a tříbodového systémy v NHL

There are two main reasons for changing rules in the ice hockey. The first reason is a safety of players and spectators and the second reason is an attractiveness of matches. This paper studies effects of rule changes that were made because of the second reason, e.g....

Šedivá, Blanka , Ťoupal, Tomáš
Principy teorie náhodných matic a jejich aplikace při výběru portfolia

In this paper, we use random matrix theory to analyse eigenvalues and see if there is a presence of pertinent information by using Marčenko–Pastur distribution. Thus, we analyse cross correlations between price fluctuations of different stocks using methods of random matrix theory. More...

Bizzarri, Michal , Lávička, Miroslav
Triangular PN patches subject to surface-area constraints

This paper is devoted to the construction of polynomial surfaces with Pythagorean normals (PN surfaces) interpolating given data subject to prescribed constraints on the surface area of the patch. This is a problem analogous to the interpolation with Pythagorean hodograph (PH) curves sa...

Lávička, Miroslav , Bizzarri, Michal
Branching pieces of rational skins from polynomial MOS patches

In this paper we will investigate one certain application of polynomial 2-surfaces possessing the polynomial area element in the Minkowski space $\R^{3,1}$, where they coincide with the so called MOS surfaces (i.e., medial surface transforms with rational domain boundaries). We formulate...

Marek, Patrice , Vávra, František
Domácí výhoda v anglické Premier League

The home team advantage in association football is a well known phenomenon. The aim of this study is to offer a different view on the home team advantage. Usually, in association football, each two teams – team A and team B – play twice in a season. Once as...

Rosenberg, Josef , Byrtus, Miroslav
Perpetuální body v modelu intersticiálních buněk Cajalova typu

Cajal-like interstitial cells (IC-LC) play important role in both physiological and pathological function of the bladder. The authors developed relative simple mathematical model consisting of five nonlinear ODEs. The model accuracy was verified using published experimental results. Deeper analysis of...

Bastl, Bohumír , Brandner, Marek , Egermaier, Jiří , Michálková, Kristýna , Turnerová, Eva
Isogeometrická analýza pro úlohy proudění

The article is devoted to the simulation of viscous incompressible fluid flow based on solving the Navier-Stokes equations. As a numerical model we chose isogeometrical approach. Primary goal of using isogemetric analysis is to be always geometrically exact, independently of the discretizati...

Vávra, František , Ťoupal, Tomáš
Financování obnovy majetku z odpisů

Depreciation has its cost and financial aspect. Depreciation can be taken as a source of funds in company in case of profit and is used to cover operating expenses. This leads to their appreciation by rate of return costs and generates fund. There are two forms of&#x...

Šedivá, Blanka , Marek, Patrice
Časová struktura úrokových sazeb: porovnání výnosových křivek pro Českou republiku a Německo

The aim of the paper is to demonstrate the possibility of using parametric and nonparametric methods for estimating the term structure of interest rates. First, the principles of several yield curves construction are described and later, advantages and disadvantages of parametric models ...

Šedivá, Blanka , Pavelec, Josef
Adaptivní odhady parametrů Markowitzova modelu pro optimalizaci portfolia

This article is focused on a stock market portfolio optimization. The used method is a modification of traditional Markowitz model which extends the original one for adaptive approaches of parameter estimations. One of the basic factors which significantly influence optimal portfolio is ...

Šedivá, Blanka
Wonderland population-development-environment model (PDE)

The Wonderland Population-Development-Environment Model (PDE) allows to study the interactions between the economic, demographic and environment factors of an idealized world, thereby enabling them to obtain insights transferable to the real world. This model was first introduced by Sanderson in ...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 22