Prohlížení Ústřední knihovna ČVUT dle názvu

Zobrazují se záznamy 1570-1589 z 2019

    • S5 1803+78 Revisited 

      Autor: Nesci , R.; Maselli , A.; Montagni , F.; Sclavi , S.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      We report on our optical monitoring of the BL Lac object S5 1803+78 from 1996 to 2011. The source showed no clear periodicity, but a time scale of about 1 300 days between major flares is possibly present. No systematic ...

    • Safety analysis of the method of implementation of crash cushions 

      Autor: Šimková, Tereza; Frydrýn, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The topic of the article are vehicle restraint systems. Specifically, the paper focuses on the safety analysis of the way of implementation of crash cushions. Within the safety analysis carried out on the territory of the ...

    • Scalable Vertical GaN FETs (SV- GaN FETs) for Low Voltage Applications 

      Autor: Hongyang Yan; Sankara Narayanan, E.M.
      (České vysoké učení technické v Praze. České centrum IET, 2021)
      This is the first report on a novel multi-polarization channel applied to realize normally-off and high- performance vertical GaN device devices for low voltage applications. This structure is made with 2DHG ...

    • SCALE AND SERPENT TWO-GROUP CROSS-SECTION DATA GENERATION 

      Autor: Novák, Ondřej; Frýbort, Jan; Sklenka, Lubomír; Rataj, Jan; Chvála, Ondřej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      In this work, VVER fuel assembly is calculated using two different codes - Serpent and SCALE. Multiplication factor and several two-group macroscopic parameters including scattering cross-section, fission cross-section, ...

    • SEARCH FOR DARK MATTER WITH GAMMA-RAYS: A REVIEW 

      Autor: Morselli, Aldo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Successfully launched in June 2008, the Fermi Gamma-ray Space Telescope, formerly named GLAST, has been observing the high-energy gamma-ray sky with unprecedented sensitivity inthe 20MeV ÷ 300 GeV energy range and electrons ...

    • SEARCH FOR GRAVITATIONAL WAVES FROM SUPERNOVAE AND LONG GRBS 

      Autor: van Putten, Maurice H.P.M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We report on evidence for black hole spindown in the light curves of the BATSE catalogue of 1491 long GRBs by application of matched filtering. This observation points to a strong interaction of the black hole with surrounding ...

    • SEARCH FOR ISOLATED BLACK HOLES: PAST, PRESENT, FUTURE 

      Autor: Karpov , Sergey; Beskin , Grigory; Plokhotnichenko , Vladimir
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The critical property of a black hole is the presence of an event horizon. It may be detected only by means of a detailed study of the emission features of its surroundings. The temporal resolution of such observations has ...

    • Segmentation of pores in carbon fiber reinforced polymers using the U-Net convolutional neural network 

      Autor: Yosifov, Miroslav; Weinberger, Patrick; Plank, Bernhard; Fröhler, Bernhard; Hoeglinger, Markus; Kastner, Johann; Heinzl, Christoph
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      This study demonstrates the utilization of deep learning techniques for binary semantic segmentation of pores in carbon fiber reinforced polymers (CFRP) using X-ray computed tomography (XCT) datasets. The proposed workflow ...

    • SEGMENTING TAGGED CARDIAC MRI DATA USING A LOCAL VARIANCE FILTER 

      Autor: Oberhuber , Tomáš; Kučera , Slavomír; Loucký , Jakub; Súkupová , Lucie; Tintěra , Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We present a new method for segmenting tagged MRI data. It is based on the observation that the tagging grid vanishes almost immediately inside the ventricles because of the blood flow. Segmentation can be therefore driven ...

    • SELECTED ASPECTS OF ETCS-L3 DEPLOYMENT 

      Autor: Koutecký, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      This paper focuses on selected problem areas in the implementation of ETCS L3, analyz-es their impacts and offers a number of possible solutions as a basis for pilot testing. It compares the suitability of each solution ...

    • SELECTION OF REFERENCE VALUE OF LONGITUDINAL TO TRANSVERSAL ULTRASONIC WAVES VELOCITY RATIO ON PRESSURE PURPOSE STEELS FOR DETECTION OF CREEP 

      Autor: Zavadil, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Common degradation process for industrial equipment in power and petrochemical industry is creep. The ultrasonic waves velocities and their ratio can provide feedback on stress-strain conditions generated by heat. Selection ...

    • Self tunning filter for three levels four legs shunt active power filter with fuzzy logic controller 

      Autor: Djendaoui, Dahmane; Benaissa, Amar; Rabhi, Boualaga; Zellouma, Laid
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The low harmonic distortion and reduced switching losses are the advantages of using the multilevel inverter. For this purpose, the three-level inverter is used in this paper as a three-phase four-leg shunt active power ...

    • SELF-ABSORPTION CORRECTIONS BASED ON MONTE CARLO SIMULATIONS 

      Autor: Johnová, Kamila
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      The main aim of this article is to demonstrate how Monte Carlo simulations are implemented in our gamma spectrometry laboratory at the Department of Dosimetry and Application of Ionizing Radiation in order to calculate the ...

    • Self-interference cancellation in underwater acoustic communications systems using orthogonal pilots in IBFD 

      Autor: Naman, Hala A.; Abdelkareem, Ammar E.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      This paper proposes a Self-interference (SI) cancellation system model of Underwater acoustic (UWA) communication for in-band full-duplex (IBFD) technology. The SI channel is separated from the Far channel by exploiting a ...

    • SEMI-ACTIVE DAMPING PERFORMANCE OF IRON PARTICLE FILLED SILICONE RUBBER 

      Autor: Dirisamer, Florian; Cakmak, Umut; Marth, Edmund; Major, Zoltan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      The aim of this work was to design, produce and evaluate a demonstrator to visualize the magneto-induced damping behaviour of materials. In contrast to standard materials, the damping coefficient of iron particle filled ...

    • Semi-analytical approach-based studies of the squeeze film lubrication between rough porous annular discs: Rabinowitsch fluid model 

      Autor: Rahul, Amit Kumar; Singh, Manoj Kumar; Tiwari, Ravi; Paul, Sourabh; Rao, Pentyala Srinivasa; Biswas, Rohahn
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      In recent years, there has been much interest in the effects of porosity and surface roughness (SR) or geometric irregularities between two moving plates under hydrodynamic lubrication. Porous bearings are used extensively ...

    • Semi-probabilistic assessment of existing bridge using simplified methods for estimation of variance 

      Autor: Novák, Lukáš; Novák, Drahomír
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The paper is focused on assessment of existing prestressed concrete bridge by simplified methods for estimation of coefficient of variation. The bridge was selected in the framework of the European Project INTERREG ...

    • SEMICLASSICAL ASYMPTOTICS OF EIGENVALUES FOR NON-SELFADJOINT OPERATORS AND QUANTIZATION CONDITIONS ON RIEMANN SURFACES 

      Autor: Esina I., Anna; Shafarevich I., Andrei
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonself-adjoint operators that are important for applications. These operators are the Schrödinger operator with complex periodic ...

    • Seminář jaderného inženýrství 2020 - sborník příspěvků 

      Autor: Novák, Ondřej
      (České vysoké učení technické v Praze, 2020)

    • Seminář jaderného inženýrství 2021 - sborník příspěvků 

      Autor: Novák, Ondřej
      (České vysoké učení technické v Praze, 2021)