Now showing items 1-20 of 60

    • AN ANALYSIS OF SPATIAL STRUCTURE OF URBAN REGIONAL NETWORKS USING GIS 

      Author: Kostin , Vitalii; Halounová , Lena
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Road network is the foundation of the urbanization process. Initially, it represented an indispensable part not only for the very existence of cities but also for their further economic and social development. Gradually ...
    • PARTICULARS OF ADSORBENT REGENERATION WITH THE USE OF MICROWAVE ENERGY 

      Author: 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 ...
    • LOW LEAKAGE CHARGE RECYCLING TECHNIQUE FOR POWER MINIMIZATION IN CNTFET CIRCUITS 

      Author: Kavitha , Manickam; Kalpana M., Alagar
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Carbon Nanotube Field Effect Transistor (CNTFET) is one of the most promising candidates in the near future for digital design due to its better electrostatics and higher mobility characteristics. Parameters that determine ...
    • EVALUATION OF RAILWAY BALLAST LAYER CONSOLIDATION AFTER MAINTENANCE WORKS 

      Author: Sysyn , Mykola; Nabochenko , Olga; Kovalchuk , Vitalii; Gerber , Ulf
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The results of the study of the ballast layer consolidation after the work of ballast-tamping machines of different types are given in the article. The existing methods of determining the degree of consolidation of the ...
    • OPTIMIZATION OF BIODIESEL PRODUCTION FROM WASTE FRYING OIL OVER ALUMINA SUPPORTED CHICKEN EGGSHELL CATALYST USING EXPERIMENTAL DESIGN TOOL 

      Author: Yusuff S., Adeyinka; Popoola T., Lekan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      An optimization of the biodiesel production from a waste frying oil via a heterogeneous transesterification was studied. This present study is also aimed at investigating the catalytic ehaviour of the alumina supported ...
    • PARTICLE MOTION OVER THE EDGE OF AN INCLINED PLANE THAT PERFORMS AXIAL MOVEMENT IN A VERTICAL LIMITING CYLINDER 

      Author: 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 ...
    • THE SUGGESTIONS AS TO THE CALCULATION BEARING CAPACITY OF SANDWICH REINFORCED CONCRETE — FOAMED CONCRETE FLOOR SLABS 

      Author: Lytvyniak , Oksana; Tashak , Myroslava
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This article presents the results of an experimental research of sandwich reinforced concrete-foamed concrete floor slabs. These floor slabs combine three different materials — normal concrete, foamed concrete and a steel ...
    • MATHEMATICAL ALGORITHM OF FUZZY LOGIC CONTROLLER FOR MULTILEVEL INVERTER CREATING VERTICAL DIVIDED VOLTAGE 

      Author: Can , Erol
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      A 9-level inverter with a boost converter has been controlled with a fuzzy logic controller and a PID controller for regulating output voltage applications on resistive (R) and inductive (L), capacitance (C). The mathematical ...
    • WELDING OF NITINOL BY SELECTED TECHNOLOGIES 

      Author: Kramár , Tomáš; Tauer , Jan; Vondrouš , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Nitinol is a perspective alloy that is difficult to weld because of its high sensitivity to heat, atmospheric gases and the NiTi phase instability. We evaluated several welding techniques with regard to their applicability ...
    • MODELLING SIMULATION AND PARAMETER IDENTIFICATION OF ACTIVE POLLUTION REDUCTION WITH PHOTOCATALYTIC ASPHALT 

      Author: Kruschwitz , Jens; Lind , Martin; Muntean , Adrian; Richardson , Omar; Wondmagegne , Yosief
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      We develop and implement a numerical model to simulate the effect of photocatalytic asphalt on reducing the concentration of nitrogen monoxide (NO) due to the presence of heavy traffic in an urban environment. The contributions ...
    • WAAM TECHNOLOGY OPTIMIZED BY OFFLINE 3D ROBOT SIMULATION 

      Author: Gurčík , Tomáš; Kovanda , Karel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      WAAM (Wire + Arc Additive Manufacturing) is an alternative additive technology that combines an electric arc as a heat source, filler material in the form of a wire for welding and cladding individual weld passes so as to ...
    • INDICATORS FOR COMMON CROSSING STRUCTURAL HEALTH MONITORING WITH TRACKSIDE INERTIAL MEASUREMENTS 

      Author: Sysyn , Mykola; Gerber , Ulf; Nabochenko , Olga; Li , Yangyang; Kovalchuk , Vitalii
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper focuses on the experimental study of an alteration in the railway crossing dynamic response due to the rolling surface degradation during a crossing’s lifecycle. The maximal acceleration measured with the ...
    • COMPENSATION OF SPRINGBACK IN LARGE SHEET METAL FORMING 

      Author: Pačák , Tomáš; Tatíček , František; Valeš , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      A precise production of sheet metal parts has always been a main goal in press shops. Highest quality demands are required especially in automotive production. Unfortunately, even today, the production is not optimal due ...
    • ADSORPTION OF CATIONIC DYE FROM AQUEOUS SOLUTION USING COMPOSITE CHICKEN EGGSHELL ANTHILL CLAY: OPTIMIZATION OF ADSORBENT PREPARATION CONDITIONS 

      Author: Yusuff Sikiru, Adeyinka
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      A composite adsorbent was prepared from anthill and eggshell mixture, using an incipient wetness impregnation method and it was used for an adsorption of cationic dye (methylene blue, MB) from an aqueous solution. The ...
    • CYLINDRICAL ROLLER BEARING LUBRICATION REGIMES ANALYSIS AT LOW SPEED AND PURE RADIAL LOAD 

      Author: Chmelař , Jakub; Petr , Karel; Mikeš , Petr; Dynybyl , Vojtěch
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      In this article, we describe a method of the roller bearing lubrication regime prediction. It uses a mathematical model of the bearing based on the standard ISO/TS 16281 to obtain the external load distribution over the ...
    • AUTOMATIC EEG CLASSIFICATION USING DENSITY BASED ALGORITHMS DBSCAN AND DENCLUE 

      Author: 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 ...
    • THE CHARACTERISTICS OF AlSi COATING ON STEEL 22MnB5 DEPENDING ON THE HEAT TREATMENT 

      Author: Kolaříková , Marie; Chotěborský , Rostislav; Hromasová , Monika; Linda , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The coating on the 22MnB5 steel is intended to protect it against oxidation during the forming process. This steel is hot-pressed. A preheating before the pressing and subsequent hardening in the tool affects the properties ...
    • MODELBASED SECURITY ANALYSIS OF FPGA DESIGNS THROUGH REINFORCEMENT LEARNING 

      Author: Vetter , Michael
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Finding potential security weaknesses in any complex IT system is an important and often challenging task best started in the early stages of the development process. We present a method that transforms this task for FPGA ...
    • EVALUATING SHEAR STRENGTH OF SAND GGBFS BASED GEOPOLYMER COMPOSITE MATERIAL 

      Author: Al-Rkaby Hussein Jassim, Alaa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Geopolymer has been emerging as a novel and sustainable replacement for the traditional soil improvement materials, such as ordinary Portland cement OPC and lime, which have severe environmental impacts. In this paper, a ...
    • THE EFFECT OF SOIL GRAIN SIZE ON THE DEFORMATION PROPERTIES OF REINFORCED GEOCELL LAYERS 

      Author: Luňáčková , Barbara; Mohyla , Marek; Pinka , Miroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The effect of backfill material grading on the behaviour of geocell reinforced layers was experimentally investigated in this study. A series of loading tests were performed on a model with geocell reinforced and unreinforced ...