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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 43
Taylor, Stephen , Brychcín, Tomáš
The representation of some phrases in Arabic word semantic vector spaces

Design of electrical machines with low carbon footprint is an actual topic in the industry. Total cost of ownership is the standardized methodology to consider the lifetime costs of a power transformer already in the pre-concept design stage. There still does not exist a widel...

Hruda, Lukáš , Dvořák, Jan , Váša, Libor
On evaluating consensus in RANSAC surface registration

The topic of the article is new insights into the load of transformers depending on their own losses. Transformers are among the most common, but important elements of the transmission and distribution networks. This is a reliable device with a guaranteed lifetime at the level...

Kučera, Lukáš , Peška, Jaroslav , Fojtík, Pavel , Barták, Petr , Kučerová, Pavla , Pavelka, Jaroslav , Komárková, Veronika , Beneš, Jaromír , Polcerová, Lenka , Králík, Miroslav , Bednář, Petr
First direct evidence of broomcorn millet (Panicum miliaceum) in Central Europe

Standard short circuit tests of HV SF6 circuit breakers need high power sources and special synthetic facilities. Tests consist of many standard disciplines. Each of short fault disciplines requires high parameters from high power sources. They also require exact measurement and accurately&#...

Jiřinec, Jakub , Rot, David
Measuring system for recuperation units

This paper is focused on modeling of existing cogeneration power plant with backpressure turbine in Pilsen. The first motivation of the modeling is better understanding of all cycle features and its limitations. The second motivation is further investigation of some innovative implementation...

Heigl, Michael , Schramm, Martin , Fiala, Dalibor
A Lightweight Quantum-Safe Security Concept for Wireless Sensor Network Communication

Operational direct current grids (ODCG) are one of the most important components of many power plants and substations, for example, hydroelectric power plants. They are designed for power supply of relay protection devices, signalization and automation, and for the power supply of impor...

Kroupa, Tomáš , Zemčík, Hana , Zemčík, Robert
Micromechanical analysis of fiber spatial distribution influence in unidirectional composite cross-section on overall response in terms of tensile curves

Accurate temperature control is an important part of an induction brazing process, because of a small difference between melting points of aluminum and soldering material. However, direct measurement of the local temperature at the spot of brazing is not possible in a production li...

Svoboda, Lukáš , Beliga, Slobodan
Evaluation of Croatian Word Embeddings

In this article, we investigate the periodic nonlinear second order ordinary differential equation with damping u''(x) + r (x) u'(x) + g(x, u(x)) = f (x) , x ∈ [0, 2π] , u(0) = u(2π) , u'(0) = u'(2π) , where g is a L1-Caratheodory function, r ...

Skřivan, Vojtěch , Sodomka, Ondřej , Mach, František
Magnetically guided soft robotic grippers

Soft robotic grippers based on magnetorheological elastomers are proposed. Rigid nonmagnetic skeleton of the gripper is encased by an elastomer with magnetic properties that exhibits soft-touch properties and reacts to external magnetic field. The basic concept of the grippers, their operation&#x...

Gevorkov, Levon , Šmídl, Václav , Sirový, Martin , Rassõlkin, Anton , Kallaste, Ants , Vaimann, Toomas
Model for torque estimation of pump system with horizontal pipe network

This paper investigates the possibility of torque estimation of Centrifugal Pump System (CPS) with horizontal pipe network topology. It illustrates the concept of a model-based scheme for hydraulic system simulation. The simulation model developed for CPS takes into consideration the hydraulic&#x...

Štork, Milan , Novák, Jaroslav , Zeman, Vaclav
Models of physiological parameters for runners and cyclists

The study of physiological parameters dynamic is currently the main area of research in exercise physiology. The most common physiological data to collect include heart rate, oxygen saturation, core body and skin temperature, blood pressure, ECG, oxygen consumption and others. The data ...

Balliou, Angelika , Pfleger, Jiří , Skoulatakis, George , Kazim, Samrana , Rakušan, Jan , Kennou, Stella , Glezos, Nikos
Programmable molecular-nanoparticle multi-junction networks for logic operations

We propose and investigate a nanoscale multi-junction network architecture that can be configured on-flight to perform Boolean logic functions at room temperature. The device exploits the electronic properties of randomly deposited molecule-interconnected metal nanoparticles, which act collectively as stro...

Kotlan, Václav , Hamar, Roman , Doležel, Ivo
Induction heating-assisted laser welding of stainless cylindrical pipes

A 3D model of induction-assisted laser welding of stainless cylindrical pipes is presented, incorporating two physical fields: magnetic field and temperature field in the welded pipe that influence one another. The model is solved in quasi-coupled formulation using software COMSOL Multiphysics&#x...

Lovecký, Martin , Závorka, Jiří , Vimpel, Jan
VVER-1000 fuel assembly model in CAD-based unstructured mesh for MCNP6

Geometry models for Monte Carlo transport codes have been using standard constructive solid geometry (CSG). The standard approach is using analytical equations for defining surfaces from which spatial cells are constructed. Both union and intersection operators are available, therefore, arbitrary ...

Petrášová, Iveta , Karban, Pavel , Pánek, David , Šroubová, Lenka
Shape and topology optimization of high power converter busbar

The paper is divided into two parts. In the first section the paper deals with shape optimization of high-power converter busbar. The second section is focused on the topology optimization which was applied on the busbar. The main goal of the optimization is to ensure tha...

Zuzjak, Ladislav , Tureček, Oldřich
Advanced method for measurement of parameters of multi-channel sound systems

Multi-channel sound systems are very often used in many areas. One of the significant areas is playback of music in the entertainment industry. A specific area is high-quality car sound system. At present, the sound systems in the automotive are realized using multi-channel loudspe...

Bouzek, Stanislav , Tureček, Oldřich
Possibilities of verifying the parameters of the absorbing elements using the loudspeaker

This paper deals with other option of determination of the acoustic absorbing materials parameters. Simplified procedures are often used to design new absorbing elements. These procedures are based on an ideal model or previous experience. The result is often quite inaccurate. To verify...

Bělík, Milan
Automated data acquisition for electrical power engineering

This article describes evaluation and application of low cost data acquisition device for selected tasks in electrical power engineering. The first part discusses theoretical and technical limits of NI PCI-6221 DAQ. Following chapter inscribes application for current / voltage measurement an...

Lovecký, Martin , Závorka, Jiří , Jiřičková, Jana , Škoda, Radek
Burnable absorber layer in HTR coated particles for OTTO fuel cycle

High temperature reactor is loaded by fuel pebbles that slowly flow through the reactor core. Reactor operation is described by a continuous on-power refueling with two possible fuel cycles. Multi-pass scheme allows lower peak power density. Moreover, multiple passing through the core s...

Závorka, Jiří , Lovecký, Martin , Škoda, Radek
Fuel pebble optimization

The pebble bed reactor is randomly filled with thousands of spheres with fuel and moderator elements known as pebbles. Each fuel pebble contains thousands of coated TRISO particles stochastically embedded in the graphite matrix. Compared to PWR reactors with a regular lattice of fu...

Frank, Zdeněk , Hruška, Karel
Design, construction and measurement of an educational synchronous machinery

The paper deals with a complete manufacture of a synchronous machinery for educational purposes. The main target of the design is creation of a machinery which clearly shows all constructional components of used machines, its overall dimensions allow easy transportation between education...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 43