Poslední příspěvky

  • STUDY ON MCNP6 MODEL IN THE CALCULATION OF KINETIC PARAMETERS FOR PEBBLE BED REACTOR 

    Autor: Zuhair,; Suwoto,; Setiadipura, Topan; Su'ud, Zaki
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    When conducting a nuclear reactor transient analysis, the most important parameter, called the kinetic parameter, is required. The calculation of kinetic parameters can be conducted using several methods. The deterministic ...
  • ARTIFICIAL NEURAL NETWORK APPROACH FOR THE IDENTIFICATION OF CLOVE BUDS ORIGIN BASED ON METABOLITES COMPOSITION 

    Autor: Rustam; Gunawan, Agus Yodi; Kresnowati, Made Tri Ari Penia
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    This paper examines the use of an artificial neural network approach in identifying the origin of clove buds based on metabolites composition. Generally, large data sets are critical for an accurate identification. Machine ...
  • NATM TUNNELS – CONSIDERATION OF THE PARTLY DAMAGED PRIMARY LINING IMPACT FOR THE SECONDARY LINING EVALUATION 

    Autor: Trunda , Vlastislav; Hilar , Matouš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    Tunnels excavated by the New Austrian Tunnelling Method (NATM) are traditionally supported by a double-shell lining. The primary lining is generated from reinforced sprayed concrete with rockbolts, the secondary lining is ...
  • 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, ...
  • OPTIMIZING EFFICIENCY OF THE COMBINED SEWER OVERFLOW CHAMBER HOBAS 

    Autor: Procházka, Jiří; Pollert, Jaroslav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    The paper deals with the design of swinging self-clean screen bars and the assessment of pressure losses in the combined sewer overflow chamber (HOBAS CSO Chamber), sold by the company HOBAS. The HOBAS CSO Chamber ensures ...
  • TESTING OF GLUED JOINTS ON PLASTIC PARTS MANUFACTURED USING FFF TECHNOLOGY 

    Autor: Suder , Jiří; Vocetka , Michal; Kot , Tomáš; Fojtík , František; Fusek , Martin
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    The article focuses on the testing of glued joints of plastic parts manufactured by 3D rapid prototyping, using the Fused Filament Fabrication technology. The first part of the article describes the suitability of using a ...
  • A combined strain element to functionally graded structures in thermal environment 

    Autor: Ton-That , Hoang Lan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    Functionally graded materials are commonly used in a thermal environment to change the properties of constituent materials. They inherently withstand high temperature gradients due to a low thermal conductivity, core ...
  • VERSATILE CHIRP SINE GENERATOR ON FIXED-POINT FPGA 

    Autor: Kunz, Jan; Beneš, Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    This paper deals with a logarithmic and a linear chirp sine generation on a fixed-point FPGA mainly for vibration testing, nevertheless, the generator can also be used in other areas. A basic overview of the logarithmic ...
  • A NEW FASTENER TO ENSURE THE RELIABILITY OF A PASSENGER CAR BODY ON A TRAIN FERRY 

    Autor: Lovska, Alyona; Fomin , Oleksij
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    To ensure the strength of the passenger car bodies during transportation on train ferries, it is proposed to mount fastening elements of chain binders on the body bolster beams. The principle of such an element is based ...
  • HOMOGENIZATION OF TRANSPORT PROCESSES AND HYDRATION PHENOMENA IN FRESH CONCRETE 

    Autor: Beneš , Michal; Štefan , Radek
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    The problem of hydration and transport processes in fresh concrete is strongly coupled and non- inear, and therefore, very difficult for a numerical modelling. Physically accurate results can be obtained using fine-scale ...
  • 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 ...
  • SUITABLE PRODUCTION TOOLS SELECTION WITH THE USE OF EVOLUTIONARY ALGORITHMS 

    Autor: Hynek , Petr; Kreibich , Viktor; Firt , Roman
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    This paper deals with the use of a production equipment simulation in the design of production systems, more specifically the welding equipment in the automotive industry. Based on the simulation results, a matrix, which ...
  • 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 ...
  • ON CFD INVESTIGATION OF RADIAL CLEARANCE OF LABYRINTH SEALS OF A TURBINE ENGINE 

    Autor: Čížek , Michal; Pátek , Zdeněk
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    Fluid flow in labyrinth seals of a turbine engine is described. The aim is to describe numerical calculations of fluid flow in labyrinth seals and evaluate the calculated data for different settings of radial clearance of ...
  • HEAT TRANSFER ENHANCEMENT AND FRICTION IN DOUBLE PIPE HEAT EXCHANGER WITH VARIOUS NUMBER OF LONGITUDINAL GROOVES 

    Autor: Sunu , Putu Wijaya; Anakottapary , Daud Simon; Suarta , I Made; Santosa , I Dewa Made Cipta; Suarsana , Ketut
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    It has been found out that heat exchangers with longitudinal grooves produce better heat transfer than those without longitudinal grooves. However, up to now, there have been few investigations and applications of longitudinal ...
  • Newmark algorithm for dynamic analysis with Maxwell chain model 

    Autor: Schmidt , Jaroslav; Janda , Tomáš; Zemanová , Alena; Zeman , Jan; Šejnoha , Michal
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    This paper investigates a time-stepping procedure of the Newmark type for dynamic analyses of viscoelastic structures characterized by a generalized Maxwell model. We depart from a scheme developed for a three-parameter ...
  • APPLICATION OF FMEA METHODOLOGY FOR CHECKING OF CONSTRUCTION’S PROJECT DOCUMENTATION AND DETERMINATION OF THE MOST RISK AREAS 

    Autor: Tuháček , Martin; Franek , Ondřej; Svoboda , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    The article deals with an innovative method designed to check project documentation of buildings at the design stage, specifically exploring the possibility to implement FMEA and PDCA methodologies. Based on performed ...
  • A COMPARISON OF TWO MODAL ANALYSIS METHODS: AN IMPACT HAMMER VERSUS LASER VIBROMETRY 

    Autor: Krejčí , Jakub; Beneš , Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. ...
  • MODELING OF MATERIAL BALANCE FROM THE EXPERIMENTAL UCG 

    Autor: Durdán , Milan; Terpák , Ján; Kačur , Ján; Laciak , Marek; Flegner , Patrik
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    The underground coal gasification is a continually evolving technology, which converts coal to calorific gas. There are many important parameters in this technology, which are difficult to measure. These parameters include ...
  • PROPERTIES OF A DIFFERENTIAL SEQUENCE BASED UPON THE KUMMER-SCHWARZ EQUATION 

    Autor: Maharaj , Adhir; Andriopoulos , Kostis; Leach , Peter
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
    In this paper, we determine a recursion operator for the Kummer-Schwarz equation, which leads to a sequence with unacceptable singularity properties. A different sequence is devised based upon the relationship between the ...

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