Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 119-138 z 880

    • Assessment of structures repeatedly exposed to thermal loading and extinguishing water: a case study of a firefighting training facility 

      Autor: Müller, Petr; Benýšek, Martin; Štefan, Radek; Holan, Jakub; Košťálová, Šárka
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      When designing a new structure or assessing an existing one, the risk of fire and its effect on the structure must be considered. Structures are usually assessed for fire resistance at the design stage – i.e. before the ...

    • Assessment of the effectiveness of lubrication of Ti-6Al-4V titanium alloy sheets using radial basis function neural networks 

      Autor: Trzepieciński, Tomasz; Szpunar, Marcin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The aim of the research presented in this article was to determine the value of the friction coefficient using a simple tribological test and to build an empirical model of friction with the use of radial basis function ...

    • ASTRONOMICAL GLASS PLATE NEGATIVES: MONITORING OF EMULSION LAYER DETERIORATION 

      Autor: Miskova , L.; Novák , P.; Hudec , R.; Novotná , M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      One of the techniques for making photographic negatives most used in the history of photography were gelatin glass plates. This technique was used not only in the artistic field but also and mainly in the scientific field. ...

    • ASTRONOMICAL PLATE ARCHIVES AND SUPERMASSIVE BLACK HOLE BINARIES 

      Autor: Hudec, René
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The recent extensive digitisation of astronomical photographic plate archives, the development of new dedicated software and the use of powerful computers have for the first time enabled effective data mining in extensive ...

    • Astroparticle Physics Today 

      Autor: Giovannelli , Franco
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this short review paper I will draw attention to the most important steps made in the past decade toward a better understanding of the physics governing our Universe. The results that I will discuss are drawn from the ...

    • Atmospheric Argon Free burning Arcs with a Simplified Unified Model Using CFD-Arc Modeling 

      Autor: Lee , Won-Ho; Lee , Jong-Chul
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Free burning arcs, where the work piece acts as an anode, are frequently used for a number of applications. Our investigation is exclusively concerned with a simplified unified model of arcs and their electrodes under ...

    • AUTOMATIC BIOMASS BOILER WITH AN EXTERNAL THERMOELECTRIC GENERATOR 

      Autor: Brázdil , Marian; Šnajdárek , Ladislav; Kracík , Petr; Pospíšil , Jirí
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper presents the design and test results of an external thermoelectric generator that utilizes the waste heat from a small-scale domestic biomass boiler with nominal rated heat output of 25 kW. The low-temperature ...

    • AUTOMATIC CLASSIFICATION OF POINT CLOUDS FOR HIGHWAY DOCUMENTATION 

      Autor: Hůlková , Martina; Pavelka , Karel; Matoušková , Eva
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Mobile laser scanning systems confirmed the capability for detailed roadway documentation. Hand in hand with enormous datasets acquired by these systems is the increase in the demands on the fast and effective processing ...

    • AUTOMATIC EEG CLASSIFICATION USING DENSITY BASED ALGORITHMS DBSCAN AND DENCLUE 

      Autor: Piorecký , Marek; Štrobl , Jan; Krajča , Vladimír
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Electroencephalograph (EEG) is a commonly used method in neurological practice. Automatic classifiers (algorithms) highlight signal sections with interesting activity and assist an expert with record scoring. Algorithm ...

    • AUTOMATIC RECONSTRUCTION OF ROOF MODELS FROM BUILDING OUTLINES AND AERIAL IMAGE DATA 

      Autor: Hron , Vojtěch; Halounová , Lena
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The knowledge of roof shapes is essential for the creation of 3D building models. Many experts and researchers use 3D building models for specialized tasks, such as creating noise maps, estimating the solar potential of ...

    • AUTOMATIC WINDING GENERATION USING MATRIX REPRESENTATION - ANFRACTUS TOOL 1.0 

      Autor: Ouamara , Daoud; Dubas , Frédéric; Benallal , Mohamed Nadjib; Randi , Sid Ali; Espanet , Christophe
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      This paper describes an original approach dealing with AC/DC winding design in electrical machines. A research software called “ANFRACTUS Tool 1.0”, allowing automatic generation of all windings in multi-phases electrical ...

    • AUTOMORPHISMS OF ALGEBRAS AND ORTHOGONAL POLYNOMIALS 

      Autor: Gromada , Daniel; Pošta , Severin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Suitable automorphisms together with complete classification of representations of some algebras can be used to generate some sets of orthogonal polynomials “at no cost”. This is also the case of nonstandard Klimyk-Gavrilik ...

    • BACK TO BASICS: TOWARDS NOVEL COMPUTATION AND ARRANGEMENT OF SPATIAL SENSORY IN IMAGES 

      Autor: Wen , Wei; Khatibi , Siamak
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      The current camera has made a huge progress in the sensor resolution and the lowluminance performance. However, we are still far from having an optimal camera as powerful as our eye is. The study of the evolution process ...

    • BATHYMETRY FROM WORLDVIEW-3 SATELLITE DATA USING RADIOMETRIC BAND RATIO 

      Autor: Parente , Claudio; Pepe , Massimiliano
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The use of optical satellite sensors allows to obtain bathymetry data on large area ina short time and in a cheap way. In addition, in particular places where it is difficult to carry out the survey by classic methods, the ...

    • Bearing capacity of damaged reinforced concrete beams strengthened with metal casing 

      Autor: Karpiuk, Irina; Danilenko , Denis; Karpiuk, Vasyl; Danilenko , Anna; Lyashenko, Tatiana
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      Experimental data on the bearing capacity of damaged reinforced concrete beams with the dimensions of 2000×200×100 mm, reinforced with prestressed metal casings, are presented. Damaging in the form of through normal and ...

    • BETA CANTOR SERIES EXPANSION AND ADMISSIBLE SEQUENCES 

      Autor: Caalim , Jonathan; Demegillo , Shiela
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      We introduce a numeration system, called the beta Cantor series expansion, that generalizes the classical positive and negative beta expansions by allowing non-integer bases in the Q-Cantor series expansion. In particular, ...

    • BEYOND THE STANDARD MODEL OF THE DISC–LINE SPECTRAL PROFILES FROM BLACK HOLE ACCRETION DISCS 

      Autor: Sochora , Vjaceslav; Karas , Vladimír; Svoboda , Jirí; Dovciak , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The strong gravitational field of a black hole has distinct effects on the observed profile of a spectral line from an accretion disc near a black hole. The observed profile of the spectral line is broadened and skewed by ...

    • Biomass Gasification — Primary Methods for Eliminating Tar 

      Autor: Lisý , Martin; Baláš , Marek; Moskalík , Jiří; Štelcl , Otakar
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This present paper deals with primary methods for reducing tar in biomass gasification, namely by feeding a natural catalyst into a fluidized bed. This method is verified using an experimental pilot plant.

    • BIPERIODIC FIBONACCI WORD AND ITS FRACTAL CURVE 

      Autor: Ramírez Luis, José; Rubiano Nevardo, Gustavo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      In this paper, we introduce a word-combinatorial interpretation of the biperiodic Fibonacci sequence. We study some properties of this new family of infinite words. Moreover,  we associate to this family of words a family ...

    • BOOTES Observation of GRB 080603B 

      Autor: Jelínek , M.; Gorosabel , J.; Castro-Tirado , A. J.; Postigo , A. de Ugarte; Guziy , S.; Cunniffe , R.; Kubánek , P.; Prouza , M.; Vítek , S.; Hudec , R.; Reglero , V.; Sabau-Graziati , L.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      We report on multicolor photometry of long GRB080603B afterglow from BOOTES-1B and BOOTES-2. The optical afterglow has already been reported to present a break in the optical lightcurve at 0.12 ± 0.2 days after the trigger. ...