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Zobrazují se záznamy 1157-1176 z 1843
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OBLIQUE MAGNETIC FIELDS AND THE ROLE OF FRAME DRAGGING NEAR ROTATING BLACK HOLE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)Magnetic null points can develop near the ergosphere boundary of a rotating black hole by the combined effects of strong gravitational field and the frame-dragging mechanism. The induced electric component does not vanish ... -
Observing CVs and LMXBs with SALT: Updates and Recent Results
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)I present an overview of the ongoing observational programs utilizing the Southern African Large Telescope (SALT), focussing on magnetic Cataclysmic Variables and Low Mass X-ray Binaries. SALT’s instruments and capabilities ... -
Old and New from Multifrequency Astrophysics
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)In this short review paper we comment on some the most important steps that have been made in the past decades for a better understanding of the physics governing our Universe. The results we discuss come from the many ... -
Oldest concrete vaulted and arch bridges in the Czech Republic – evaluation and preservation of their historical value
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper is related to a research project focused on tools for an evaluation and preservation of the historical value and function of arch and vaulted road bridges. It deals with the beginning of use of concrete vaulted ... -
On a static and dynamic calibration of thermochromic liquid crystals
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)The paper deals with a static and dynamic calibration of selected wide-range thermochromic liquid crystals (TLC - SolarDust 24C), which are very easy to ingest and can provide accurate information on the temperature ... -
On an Algorithm for Multiperiodic Words
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We consider an algorithm by Tijdeman and Zamboni constructing a word of length k thathas periods p1, . . . , pr, and the richest possible alphabet. We show that this algorithm can be easilystated and its correctness briefly ... -
On applications of brain-computer interface
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Brain-computer interface (BCI) applications implement a direct communication path between the brain and the computer. This paper deals with the fundamentals of BCI systems and the experience of the neuroinformatics team ... -
ON CFD INVESTIGATION OF RADIAL CLEARANCE OF LABYRINTH SEALS OF A TURBINE ENGINE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)Fluid flow in labyrinth seals of a turbine engine is described. The aim is to describe numerical calculations of fluid flow in labyrinth seals and evaluate the calculated data for different settings of radial clearance of ... -
ON COMPARISON OF 3D ISOGEOMETRIC TIMOSHENKO AND BERNOULLI BEAM FORMULATIONS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)Application of isogeometric analysis (IGA) for curved beams is very convenient for its ability of exact representation of curved geometries. Several beam formulation has been presented since the introduction of IGA. In ... -
ON CONNECTING WEYL-ORBIT FUNCTIONS TO JACOBI POLYNOMIALS AND MULTIVARIATE (ANTI)SYMMETRIC TRIGONOMETRIC FUNCTIONS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)The aim of this paper is to make an explicit link between the Weyl-orbit functions and the corresponding polynomials, on the one hand, and to several other families of special functions and orthogonal polynomials on the ... -
ON CONSTRUCTION OF A RELIABLE GROUND TRUTH FOR EVALUATION OF VISUAL SLAM ALGORITHMS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)In this work we are concerning the problem of localization accuracy evaluation of visual-based Simultaneous Localization and Mapping (SLAM) techniques. Quantitative evaluation of the SLAM algorithm performance is usually ... -
ON CUBATURE RULES ASSOCIATED TO WEYL GROUP ORBIT FUNCTIONS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)The aim of this article is to describe several cubature formulas related to the Weyl group orbit functions, i.e. to the special cases of the Jacobi polynomials associated to root systems. The diagram containing the relations ... -
ON DEVELOPMENT OF THE INTERACTIVE DESIGN TOOL BASED ON ISOGEOMETRIC ANALYSIS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Isogeometric analysis is a new concept of Finite element method which has been proposed to bridge the gap between the CAD systems and the FEM solvers. In Isogeometric analysis, the same basis functions, typically splines ... -
ON EFFICIENT OPERATIONAL CONCEPT OF FUTURE HIGH-SPEED RAILWAY IN THE CZECH REPUBLIC
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)The aim of this paper is to elaborate a layout of the first operational concept of Rapid Services with 1 hour system travel time between Praha and Brno. Two basic methods are used – Integrated Periodic Timetable (periodic ... -
ON EVALUATION OF MOTION GAITS ENERGY EFFICIENCY WITH A HEXAPOD CRAWLING ROBOT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)In this work, we are concerning the problem of energy efficient locomotion of a hexapod crawling robot. We are emphasizing a practical verification and deployment on a real walking robot to evaluate relations between the ... -
ON EVALUATION OF THE THREE-DIMENSIONAL ISOGEOMETRIC BEAM ELEMENT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)The exact description of the arbitrarily curved geometries, including conic sections, is an undeniable advantage of isogeometric analysis (IGA) over standard finite element method (FEM). With B-spline/NURBS approximation ... -
ON FPGA BASED ACCELERATION OF IMAGE PROCESSING IN MOBILE ROBOTICS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)In visual navigation tasks, a lack of the computational resources is one of the main limitations of micro robotic platforms to be deployed in autonomous missions. It is because the most of nowadays techniques of visual ... -
ON GENERALIZATION OF SPECIAL FUNCTIONS RELATED TO WEYL GROUPS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)Weyl group orbit functions are defined in the context of Weyl groups of simple Lie algebras. They are multivariable complex functions possessing remarkable properties such as (anti)invariance with respect to the corresponding ... -
On generalized Heun equation with some mathematical properties
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)We study the analytic solutions of the generalized Heun equation, (α0 + α1 r + α2 r2 + α3 r3) y′′ + (β0 + β1 r + β2 r2) y′ + (ε0 + ε1 r) y = 0, where |α3| + |β2|≠ 0, and {αi}3i=0, {βi}2i=0, {εi}1i=0 are real parameters. ... -
ON IMMERSION FORMULAS FOR SOLITON SURFACES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)This paper is devoted to a study of the connections between three different analytic descriptions for the immersion functions of 2D-surfaces corresponding to the following three types of symmetries: gauge symmetries of the ...