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Zobrazují se záznamy 61-80 z 2019

    • A STUDY OF FERROFLUID LUBRICATION BASED ROUGH SINE FILM SLIDER BEARING WITH ASSORTED POROUS STRUCTURE 

      Autor: Munshi M., Mohmmadraiyan; Patel R., Ashok; Deheri B., Gunamani
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper attempts to study a ferrofluid lubrication based rough sine film slider bearing with assorted porous structure using a numerical approach. The fluid flow of the system is regulated by the Neuringer-Rosensweig ...

    • A Study of Parameters Setting of the STADZT 

      Autor: Turoň , Václav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper deals with the new time-frequency Short-Time Approximated Discrete Zolotarev Transform (STADZT), which is based on symmetrical Zolotarev polynomials. Due to the special properties of these polynomials, STADZT ...

    • A Study of the Properties of Electrical Insulation Oils and of the Components of Natural Oils 

      Autor: Spohner , Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper presents a study of the electrical and non-electrical properties of insulating oils. For the correct choice of an electrical insulation oil, it is necessary to know its density, dynamic viscosity, dielectric ...

    • A study on properties of concrete with dry fly ash and fly ash slurry stored with stirring 

      Autor: Ji, Xiangnan; Takasu, Koji; Koyamada, Hidehiro; Suyama, Hiroki
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In the evaluation of concrete sustainability, what constitutes "sustainable" to one region may vary from another. This often leads to methodological forms of uncertainties that makes the evaluation process more complex. ...

    • A study on the effects of hidden safety when assessing existing structures 

      Autor: Teichgräber, Max; Straub, Daniel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In many instances, the safety of existing structures can no longer be demonstrated by standard code-based assessments. Reasons for this include changes in the code, changes in the demands on the structures and deterioration. ...

    • A SUPERINTEGRABLE MODEL WITH REFLECTIONS ON S^3 AND THE RANK TWO BANNAI-ITO ALGEBRA 

      Autor: De Bie , Hendrik; Genest Xavier, Vincent; Lemay , Jean-Michel; Vinet , Luc
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      A quantum superintegrable model with reflections on the three-sphere is presented. Its symmetry algebra is identified with the rank-two Bannai-Ito algebra. It is shown that the Hamiltonian of the system can be constructed ...

    • A SYSTEM AND A DEVICE FOR ISOLATING CIRCULATING TUMOR CELLS FROM THE PERIPHERAL BLOOD IN VIVO 

      Autor: Mego , Michal; Kocifaj , Miroslav; Kundracik , František
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Circulating tumor cells (CTC) play a crucial role in disseminating tumors and in the metastatic cascade. CTCs are found only in small numbers, and the limited amount of isolated CTCs makes it impossible to characterize ...

    • A Task-driven Grammar Refactoring Algorithm 

      Autor: Halupka , Ivan; Kollár , Ján; Pietriková , Emília
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper presents our proposal and the implementation of an algorithm for automated refactoring of context-free grammars. Rather than operating under some domain-specific task, in our approach refactoring is perfomed on ...

    • A theoretical assessment of transport emissions from institutional buildings in a Norwegian municipality 

      Autor: Fahlstedt, Oskar; Bohne, Rolf Andrè
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Municipalities are key actors in reaching the sustainable development goals 9, 11, 12, 13 set by the United Nations. The aim of this paper is to develop, on a theoretical level, a sustainable building refurbishment framework ...

    • A Thermogravimetric Study of the Behaviour of Biomass Blends During Combustion 

      Autor: Jiříček , Ivo; Rudasová , Pavla; Žemlová , Tereza
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The ignition and combustion behavior of biomass and biomass blends under typical heating conditions were investigated. Thermogravimetric analyses were performed on stalk and woody biomass, alone and blended with various ...

    • A tool for developing a plan for the renovation and remediation of cultural heritage buildings 

      Autor: Macek, Daniel; Schneiderová Heralová, Renáta; Hromada, Eduard; Vitásek, Stanislav; Střelcová, Iveta; Brožová, Lucie; Pojar, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Cultural heritage monuments are, to a large extent, public goods of collective consumption, and their preservation is in the public interest of the society as a whole. The benefits arising from the owner's investment and ...

    • A Way to Use Waste Heat to Generate Thermoelectric Power 

      Autor: Brázdil , Marian; Pospíšil , Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      In recent years there has been rising interest in thermoelectric generation as a potential source of electric power using waste heat. This paper describes thermoelectric power generation from waste heat from biomass boilers, ...

    • About the time evolution of coherent electron states in monolayers of boron allotropes 

      Autor: Díaz-Bautista, Erik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In this paper, we theoretically analyze the massless Dirac fermion dynamics in twodimensional monolayers of boron allotropes, 8B and 2BH − pmmn borophene, interacting with external electric and magnetic fields. We study ...

    • ABOUT THE UNIFORMITY AND THE STABILITY OF A VOLUME DISCHARGE IN HELIUM IN NEAR-ATMOSPHERIC PRESSURE 

      Autor: Kurbanismailov Suliymanovich, Vali; Omarov Alievich, Omar; Ragimkhanov Balaglanovich, Gadjimirza; Aliverdiev Alexandrovich, Abutrab
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We present experimental electric and time-spatial characteristics of a volume discharge and of the transition from a volume burning stage into a channel mode nearing atmospheric pressure. We show that the discharge uniformity ...

    • Accelerometer-assisted PPG Measurement During Physical Exercise Using the LAVIMO Sensor System 

      Autor: Santos , Susana Aguiar; Venema , Boudewijn; Leonhardt , Steffen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      A method is presented for long-term monitoring of vital signs tested during physical exercise. The system is based on reflective photoplethysmography (PPG), whose main component is a micro-optoelectronic sensor. The sensor ...

    • Accident rate of regional railway vehicles at railway crossings for the years 2014 to 2018 

      Autor: Seidl, Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      From a societal point of view, there are growing demands to increase traffic safety and reduce the risk of accidents of rail and road vehicles. The research to increase the safety of railway vehicles, which is carried out ...

    • ACCRETION DISKS WITH A LARGE SCALE MAGNETIC FIELD AROUND BLACK HOLES 

      Autor: Bisnovatyi-Kogan, Gennady; Klepnev, Alexandr S.; Lovelace, Richard V.E.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We consider accretion disks around black holes at high luminosity, and the problem of the formation of a large-scale magnetic field in such disks, taking into account the non-uniform vertical structure of the disk. The ...

    • Acoustical aspects of replacing traditional materials in building elements with renewable and recycled ones 

      Autor: Nováček, Jiří; Hejl, Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Building elements, especially partitions, floors and external walls significantly affect indoor acoustic comfort. Their ability to reduce noise transmission from neighbouring rooms or from outdoors depends on the element ...

    • ACTIVATION ANALYSIS OF HISTORICAL SAMPLES AND NEUTRON SPECTRUM DETERMINATION AT VR-1 TRAINING REACTOR 

      Autor: Šturma, Jan; Štefánik, Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      Vertical irradiation channel of the VR-1 training reactor of the Department of Nuclear Reactors CTU was used for activation analysis of historical samples from the 14th to the 19th century. For determination of mass fractions ...

    • Active disturbance rejection control-based anti-coupling method for conical magnetic bearings 

      Autor: Nguyen, Danh Huy; Vu, Minh Le; Trong , Hieu Do; Nguyen, Danh Giang; Nguyen, Tung Lam
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Conical-shape magnetic bearings are currently a potential candidate for various magnetic force-supported applications due to their unique geometric nature reducing the number of required active magnets. However, the bearing ...