Prohlížení Acta Polytechnica dle názvu
Zobrazují se záznamy 354-373 z 880
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GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Supernova remnants, owing to their strong shock waves, are likely sources of Galactic cosmic rays. Studies of supernova remnants in X-rays and gamma rays provide us with new insights into the acceleration of particles to ... -
GALACTIC CENTER MINISPIRAL: INTERACTION MODES OF NEUTRON STARS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Streams of gas and dust in the inner parsec of the Galactic center form a distinct feature known as the Minispiral, which has been studied in radio waveband as well as in the infrared wavebands. A large fraction of the ... -
GAS-PUFF TARGET FOR LASER-PRODUCING PLASMA SXR SOURCE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)Mass density spatial distributions of selected gas-puff targets have been determined by radiography, using quasi-monochromatic radiation at a wavelength of 13 nm. Results of spatial distributions of mass densities at various ... -
Gated Graphene Electrical Transport Characterization
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Graphene is a very interesting new material, and promises attractive applications in future nanodevices. It is a 2D carbon structure with very interesting physical behavior. Graphene is an almost transparent material that ... -
GENERAL CALCULATION OF WINDING FACTOR FOR MULTI-PHASE/-LAYER ELECTRICAL MACHINES IRRESPECTIVE OF POLES NUMBER
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)In this paper, a method to calculate the winding factor by only considering stator parameters without the rotor ones is developed. This is interesting because it allows the separation of the stator and rotor design, unlike ... -
GENERAL MODEL OF RADIATIVE AND CONVECTIVE HEAT TRANSFER IN BUILDINGS: PART I: ALGEBRAIC MODEL OF RADIATIVE HEAT TRANSFER
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)Radiative heat transfer is the most effective mechanism of energy transport inside buildings. One of the methods capable of computing the radiative heat transport is based on the system of algebraic equations. The algebraic ... -
GENERAL MODEL OF RADIATIVE AND CONVECTIVE HEAT TRANSFER IN BUILDINGS: PART II: CONVECTIVE AND RADIATIVE HEAT LOSSES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)The present paper represents the second part of the serial publication, which deals with convective and radiative heat transfers in buildings. The algebraic computational method for combined convective-radiative heat ... -
Generalized Continuity Equation for Quasi-Hermitian Hamiltonians
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The continuity relation is generalized to quasi-Hermitian one-dimensional Hamiltonians. As an application we show that the reflection and transmission coefficients computed with the generalized current obey the conventional ... -
Generalized three-body harmonic oscillator system: ground state
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In this work we report on a 3-body system in a d−dimensional space ℝd with a quadratic harmonic potential in the relative distances rij = |ri −rj| between particles. Our study considers unequal masses, different spring ... -
GENERATION OF TRANSPORT PATHS IN FRACTURED POROUS MEDIA
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)In this article, a method for generation of transport paths in combined equivalent porous media / discrete fracture network computational meshes is proposed as an alternative to a particle tracking method. It is based on ... -
Genetic algorithms to determine the optimal parameters of an ensemble local mean decomposition
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)An optimization method for an ensemble local mean decomposition (ELMD) parameters selection using genetic algorithms is proposed. The execution of this technique depends heavily on the correct choice of the parameters of ... -
Geometric approach to solving inverse kinematics of six DOF robot with spherical joints
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)Inverse kinematics is a fundamental concept in robotics that plays a crucial role in a robot’s ability to perform tasks. In this contribution, we propose a novel geometric approach based on vector calculus to solve the ... -
Geometrical Modeling of Concrete Microstructure for the Assessment of ITZ Percolation
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Percolation is considered to be a critical factor affecting the transport properties of multiphase materials. In the case of concrete, the transport properties are strongly dependent on the interfacial transition zone ... -
Geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)This study investigated the geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash. In going about the tests, the soil sample was subjected to compaction, ... -
gln+1 ALGEBRA OF MATRIX DIFFERENTIAL OPERATORS AND MATRIX QUASI-EXACTLY-SOLVABLE PROBLEMS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The generators of the algebra gln+1 in the form of differential operators of the first order acting on Rn with matrix coefficients are explicitly written. The algebraic Hamiltonians for matrix generalization of 3−body ... -
Global Optima for Size Optimization Benchmarks by Branch and Bound Principles
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper searches for global optima for size optimization benchmarks utilizing a method based on branch and bound principles. The goal is to demonstrate the process for finding these global optima on the basis of two ... -
GRB Duration Distribution Considering the Position of the Fermi
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)The Fermi satellite has a particular motion during its flight which enables it to catch the gamma-ray bursts mostly well. The side-effect of this favourable feature is that the lightcurves of the GBM detectors are stressed ... -
GRB INVESTIGATIONS BY ESA GAIA AND LOFT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The possibility of studying GRBs with the ESA Gaia and LOFT missions is briefly addressed. The ESA Gaia satellite to be launched in November 2013 will focus on high precision astrometry of stars and all objects down to ... -
Growth and Physical Structure of Amorphous Boron Carbide Deposited by Magnetron Sputtering on a Silicon Substrate with a Titanium Interlayer
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Multilayer amorphous boron carbide coatings were produced by radiofrequency magnetron sputtering on silicon substrates. To improve the adhesion, titanium interlayers with different thickness were interposed between the ... -
H2 PERMEATION BEHAVIOR OF Cr2AlC AND Ti2AlC MAX PHASE COATED ZIRCALOY-4 BY NEUTRON RADIOGRAPHY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)Hydrogen uptake by nuclear fuel claddings during normal operation as well as loss of coolant during design basis and severe accidents beyond design basis has a high safety relevance because hydrogen degrade the mechanical ...