Prohlížení Acta Polytechnica. 2021, vol. 61, no.6 dle názvu

Zobrazují se záznamy 1-10 z 10

    • Assessment of external interface of autonomous vehicles 

      Autor: Orlický, Adam; Mashko, Alina; Mík, Josef
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The paper deals with the problem of a communication interface between autonomous vehicles (AV) and pedestrians. The introduced methodology for assessing new and existing e-HMI (external HMI) contributes to traffic safety ...

    • 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 ...

    • Cavitation wear of Eurofer 97, Cr18Ni10Ti and 42HNM alloys 

      Autor: Rostova, Hanna; Voyevodin, Victor; Vasilenko, Ruslan; Kolodiy, Igor; Kovalenko, Vladimir; Marinin, Vladimir; Zuyok, Valeriy; Kuprin, Alexander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The microstructure, hardness and cavitation wear of Eurofer 97, Cr18Ni10Ti and 42HNM have been investigated. It was revealed that the cavitation resistance of the 42HNM alloy is by an order of magnitude higher than that ...

    • Comparision of the walk techniques for fitness state space analysis in vehicle routing problem 

      Autor: Agárdi, Anita; Kovács, László; Bányai, Tamás
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The Vehicle Routing Problem (VRP) is a highly researched discrete optimization task. The first article dealing with this problem was published by Dantzig and Ramster in 1959 under the name Truck Dispatching Problem. Since ...

    • Delamination of polyimide in hydrofluoric acid 

      Autor: Al-mashaal, Asaad K. Edaan; Cheung, Rebecca
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      Wet etching is a critical fabrication step for the mass production of micro and nanoelectronic devices. However, when an extremely corrosive acid such as hydrofluoric (HF) acid are used during etching, an undesirable damage ...

    • Determination of bond model for 7-wire strands in pretensioned concrete beam 

      Autor: Parkhats, Vadzim; Krzywoń, Rafał; Hulimka, Jacek; Kubica, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      A correct choice of a bond model for prestressing tendons is crucial for the right modelling of a structural behaviour of a pretensioned concrete structure. The aim of this paper is the determination of an optimal bond ...

    • Dirac oscillator in dynamical noncommutative space 

      Autor: Haouam, Ilyas
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In this paper, we address the energy eigenvalues of two-dimensional Dirac oscillator perturbed by a dynamical noncommutative space. We derived the relativistic Hamiltonian of Dirac oscillator in the dynamical noncommutative ...

    • Geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash 

      Autor: Nnochiri, Emeka Segun; Ogundipe, Olumide Moses; Ola, Samuel Akinlabi
      (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, ...

    • Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes 

      Autor: Robert, Ubong Williams; Etuk, Sunday Edet; Agbasi, Okechukwu Ebuka; Umoren, Grace Peter; Akpan, Samuel Sunday; Nnanna, Lebe Agwu
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      It has been observed that clay soil cannot be used for building design, unless it is modified by firing or with cement. Either method of stabilization can adversely affect the environment and public health just like ...

    • Water-air ejector with conical-cylindrical mixing chamber 

      Autor: Sliusenko, Andrii; Ponomarenko, Vitalii; Forostiuk, Inna
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      In the paper, the hydrodynamics of the liquid-gas mixture in the mixing chamber of the ejectors at different spatial positions was analyzed and the comparative study of such ejectors was carried out. It was found that a ...