Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 598-617 z 880

    • PAPR reduction in CP-OFDM (5G) using hybrid technique 

      Autor: Yusof, Azlan; Idris, Azlina; Abdullah, Ezmin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      The Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) is a 5G multicarrier waveform that offers great data speeds and improvements in spectrum utilisation. The primary CP-OFDM’s weakness is its excessive ...

    • PARALLEL MACHINE SCHEDULING WITH MONTE CARLO TREE SEARCH 

      Autor: Agárdi, Anita; Nehéz, Károly
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In this article, a specific production scheduling problem (PSP), the Parallel Machine Scheduling Problem (PMSP) with Job and Machine Sequence Setup Times, Due Dates and Maintenance Times is presented. In this article after ...

    • PARALLELIZATION OF ASSEMBLY OPERATION IN FINITE ELEMENT METHOD 

      Autor: Bošanský , Michal; Patzák , Bořek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The efficient codes can take an advantage of multiple threads and/or processing nodes to partition a work that can be processed concurrently. This can reduce the overall run-time or make the solution of a large problem ...

    • PARAMETERS EFFECTING FORCED VORTEX FORMATION IN BLADE PASSAGEWAY OF DYNAMIC AIR CLASSIFIER 

      Autor: Adamčík , Martin; Svěrák , Tomáš; Peciar , Peter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Air classification of particulate materials is a method of classifying particles into coarse and fine fractions based on their size, density, or shape. Performance of the rotor air classifier is affected by operating ...

    • Parametric optimisation of friction stir welding on aluminium alloy (EN AW-1100) plates 

      Autor: Awan, Muhammad Umer Farooq; Khan, Mahmood; Waheed, Khalid; Iqbal, Zafar; Rehman, Abdul; Ali, Fahad; Shahzad, Muhammad; Saim, Muhammad Abdul Basit; Akhtar, Shahid; Aune, Ragnhild Elizabeth
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Friction stir welding is a solid-state welding process used extensively for aluminium alloys. EN AW-1100 alloy is mostly used for its exceptional corrosion resistance, high ductility, high thermal and electrical conductivities, ...

    • PARAMETRIC STUDIES ON THE COMPONENT-BASED APPROACH TO MODELLING BEAM BOTTOM FLANGE BUCKLING AT ELEVATED TEMPERATURES 

      Autor: Quan , Guan; Huang , Shan-Shan; Burgess , Ian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      In this study, an analytical model of the combination of beam-web shear buckling and bottom-flange buckling at elevated temperatures has been introduced. This analytical model is able to track the force-deflection path ...

    • Parametric study of the energy potential of a building’s envelope with integrated energy-active elements 

      Autor: Kalús , Daniel; Koudelková, Daniela; Mučková, Veronika; Sokol, Martin; Kurčová, Mária; Šťastný, Patrik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Building structures with integrated energy-active elements (BSIEAE) present a progressive alternative for building construction with multifunctional energy functions. The aim was to determine the energy potential of a ...

    • Particle Dynamics in the RMP Ergodic Layer under the Influence of Edge Plasma Turbulence 

      Autor: Kurian , Matúš; Krlín , Ladislav; Cahyna , Pavel; Pánek , Radomír
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The complex processes in edge tokamak plasma are affected (among others) both by resonant magnetic perturbation (RMP) and by plasma turbulence. RMP is nowadays considered to be a candidate for the mitigation of the ...

    • PARTICLE MOTION ON THE SURFACE OF A CONCAVE SOIL-TILLING DISK 

      Autor: Pylypaka , Serhii; Klendii , Mykola; Klendii , Oleksandra
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Relative particle motion on the internal rough surface of a concave soil-tilling disk, which rotates around horizontal axis under a soil reaction force, has been considered. A disk blade is positioned in a vertical plane, ...

    • PARTICLE MOTION OVER THE EDGE OF AN INCLINED PLANE THAT PERFORMS AXIAL MOVEMENT IN A VERTICAL LIMITING CYLINDER 

      Autor: Pylypaka F., Serhii; Klendii B., Mykola; Nesvidomin M., Viktor; Trokhaniak I., Viktor
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Differential equations of a relative material particle motion over the edge of an inclined flat ellipse that rotates around the axis of a vertical limiting cylinder have been deduced. The position of a plane relative to ...

    • PARTICULARS OF ADSORBENT REGENERATION WITH THE USE OF MICROWAVE ENERGY 

      Autor: Dobrotvorskiy , Sergey; Dobrovolska , Ludmila; Basova , Yevheniia; Aleksenko , Borys
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Energy conservation issues are acute in the world. Compressed air is widely used in the modern industrial production. The production of compressed air is a very energy-intensive process, since most of the energy, which is ...

    • Peculiar aspects of cracking in prestressed reinforced concrete T-beams 

      Autor: Karpiuk, Vasyl; Somina, Yuliia; Karpiuk, Fedir; Karpiuk, Irina
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In order to study the cracking of prestressed reinforced concrete T-shaped beam structures, the authors planned and carried out a full-scale experiment with five variable factors. The following factors were chosen as ...

    • PERFORMANCE ANALYSIS OF QUADRATURE CHAOS SHIFT 

      Autor: Alabbasi , Hesham Adnan; Abboud , Izz Kadhum; Hasan , Fadhil Sahib
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      One of the most famous techniques of non-coherent differential chaos shift keying (DCSK) is Quadrature chaos shift keying (QCSK) system, this system suffered from lowering the data rate and increasing the bit energy during ...

    • Performance assessment of steel truss railway bridge with curved track 

      Autor: Venglár, Michal; Lamperová, Katarína; Sokol, Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Non-destructive Structural Health Monitoring techniques can be incorporated into bridge integrity management by assessing structural conditions. This paper describes a performance assessment of a steel truss railway bridge ...

    • Performance characteristics of Hopkinson’s set-up pneumatic launcher 

      Autor: Sobczyk, Kamil; Kruszka, Leopold; Chmielewski, Ryszard; Rekucki, Ryszard
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The paper presents a performance characteristics of a pneumatic launcher, which is an important element of the split Hopkinson bar set-up (SHPB) at the Department of Military Engineering and Infrastructure (the Military ...

    • Performance characteristics of low carbon waste material to stabilise soil with extremely high plasticity 

      Autor: Al-Baidhani, Ali; Al-Taie, Abbas Jawad
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The application of low-carbon and natural materials to mitigate the undesired properties of difficult soils is considered as a sustainable solution to the issues regarding these soils. Selecting some natural materials, of ...

    • Performance of a hydromagnetic squeeze film on a rough circular step bearing: a comparision of different porous structures 

      Autor: Adeshara, Jatinkumar V.; Patel, Hardik P.; Deheri, Gunamani B.; Patel, Rakesh M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This investigation deals with a comparative analysis of the impact of spongy structure based on the model of Kozeny-Carman and Irmay on a hydromagnetic squeeze film in a rough circular step bearing. Christensen and Tonder’s ...

    • PERFORMANCE OF SUSTAINABLE GREEN CONCRETE INCORPORATED WITH FLY ASH, RICE HUSK ASH, AND STONE DUST 

      Autor: Siddika, Ayesha; Amin, Md. Ruhul; Rayhan, Md. Abu; Islam, Md. Saidul; Mamun, Md. Abdullah Al; Alyousef, Rayed; Amran, Y. H. Mugahed
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The performance of a sustainable green concrete with fly ash (FA), rice husk ash (RHA), and stone dust (SD) as a partial replacement of cement and sand was experimentally explored. FA and RHA have a high silica content, ...

    • Photometric Analysis of Pi of the Sky Data 

      Autor: Opiela , Rafał; Małek , Katarzyna; Mankiewicz , Lech; Siudek , Małgorzata; Sokołowski , Marcin; Żarnecki , Aleksander Filip
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Two fully automatic Pi of the Sky detectors with a large field of view, located in Spain (INTA) and in Chile (SPDA) observe the sky in search of rare optical phenomena, and also collect observations which include many kinds ...

    • PHOTOMETRIC ANALYSIS OF PI OF THE SKY DATA 

      Autor: Opiela , Rafał; Małek , Katarzyna; Mankiewicz , Lech; Siudek , Małgorzata; Sokołowski , Marcin; Zarnecki Filip, Aleksander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Pi of the Sky is a system of two wide field of view robotic telescopes, which search for short timescale astrophysical phenomena, especially for prompt optical GRB emissions. The system was designed for autonomous operation, ...