Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 521-540 z 880

    • 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 ...

    • Neural network based patient recovery estimation of a PAM-based rehabilitation robot 

      Autor: Dinh, Van-Vuong; Trinh, Minh-Chien; Bui, Tien-Dat; Duong, Minh-Duc; Dao, Quy-Thinh
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      Rehabilitation robots have shown a promise in aiding patient recovery by supporting them in repetitive, systematic training sessions. A critical factor in the success of such training is the patient’s recovery progress, ...

    • NEURINGER-ROSEINWEIG MODEL BASED LONGITUDINALLY ROUGH POROUS CIRCULAR STEPPED PLATES IN THE EXISTENCE OF COUPLE STRESS 

      Autor: Vashi , Yoginibahen Devendrasinh; Patel , Rakesh Manilal; Deheri , Gunamani Biswanath
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This study intents to scrutinize the impact of ferrofluid in the presence of couple stress for longitudinally rough porous circular stepped plates. The influence of longitudinal surface roughness is developed using the ...

    • NEUTRINOLESS DOUBLE BETA DECAY: AN EXTREME CHALLENGE 

      Autor: Ferroni, Fernando
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Neutrino-less Double Beta Decay is the only known way to possibly resolve the nature of neutrino mass. The chances to cover the mass region predicted by the inverted hierarchy require a step forward in detector capability. ...

    • NEUTRINOS AS COSMIC MESSENGERS IN THE ERA OF ICECUBE, ANTARES AND KM3NET 

      Autor: Katz, Uli F.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Using neutrinos as cosmic messengers for observation of non-thermal processes in the Universe is a highly attractive and promising vision, which has been pursued in various neutrino telescope projects for more than two ...

    • NEUTRINOS FROM ICARUS 

      Autor: Farnese, Christian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Liquid Argon Time Projection Chambers are very promising detectors for neutrino and astroparticle physics due to their high granularity, good energy resolution and 3D imaging, allowing for a precise event reconstruction. ...

    • New Abrasive Materials and Their Influence on the Surface Quality of Bearing Steel After Grinding 

      Autor: Jusko , Ondrej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper focuses on the influence of various types of abrasive grains on cutting properties during the grinding process for bearing steel. In this experiment, not only conventional super-hard abrasive materials but also ...

    • NEW APPROACH FOR ONLINE ARABIC MANUSCRIPT RECOGNITION BY DEEP BELIEF NETWORK 

      Autor: Samir , Benbakreti; Boukelif , Aoued
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      In this paper, we present a neural approach for an unconstrained Arabic manuscript recognition using the online writing signal rather than images. First, we build the database which contains 2800 characters and 4800 words ...

    • NEW CONCEPT OF SOLVABILITY IN QUANTUM MECHANICS 

      Autor: Znojil , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In quite a few recent quantum models one is allowed to make a given Hamiltonian H self-adjoint only after an ad hoc generalization of Hermitian conjugation, H†→H‡:= Θ −1H†Θ wherethe suitable operator Θ is called Hilbert-space ...

    • NEW METHOD EVALUATION OF DETAIL MATERIAL AND HEAT FLOWS FOR SINGLE STRING CEMENT CLINKER PLANT 

      Autor: Darmanto, Prihadi Setyo; Astina, I Made; Wardhana, Alfian Kusuma; Amalia, Alfi; Syahlan, Arief
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      Material flow in each main equipment of a cement clinker plant, which is very useful for controlling the process, is impossible to be measured during operation due to very high temperatures. This paper intends to overcome ...

    • NEW SPECTRAL STATISTICS FOR ENSEMBLES OF 2 × 2 REAL SYMMETRIC RANDOM MATRICES 

      Autor: Kumar , Sachin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We investigate spacing statistics for ensembles of various real random matrices where the matrix-elements have various Probability Distribution Function (PDF: f(x)) including Gaussian. For two modifications of 2 × 2 matrices ...

    • 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 ...

    • NON-DESTRUCTIVE INSPECTION BY INFRARED THERMOGRAPHY OF RESISTANCE SPOT WELDS USED IN AUTOMOTIVE INDUSTRY 

      Autor: Forejtová , Lucie; Zavadil , Tomáš; Kolařík , Ladislav; Kolaříková , Marie; Sova , Jan; Vávra , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Resistance spot welding (RSW) is one of the main joining technologies of thin sheets in the automotive industry. Key factors affecting the strength of the RSW joint are the nugget diameter, asymmetry, expulsions, intended ...

    • Non-Hermitian Star-shaped Quantum Graphs 

      Autor: Znojil , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      A compact review is given, and a few new numerical results are added to the recent studies of the q-pointed one-dimensional star-shaped quantum graphs. These graphs are assumed endowedwith certain specific, manifestly ...

    • NON-LINEAR ANALYSIS OF SLENDER MASONRY COLUMN SUBJECTED TO BIAXIAL BENDING 

      Autor: Vokál, Marek; Drahorád, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The article deals with a method for analysing slender masonry columns. The proposed method uses material and geometric non-linearity. Various stress-strain diagrams can be used: linear, linear-plastic, parabolic-plastic, ...

    • NON-THERMAL EMISSION FROM CATACLYSMIC VARIABLES: IMPLICATIONS ON ASTROPARTICLE PHYSICS 

      Autor: Šimon, Vojtech
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We review the lines of evidence that some cataclysmic variables (CVs) are the sources of non-thermal radiation. It was really observed in some dwarf novae in outburst, a novalike CV in the high state, an intermediate polar, ...

    • NON-UNITARY TRANSFORMATION OF QUANTUM TIME-DEPENDENT NON-HERMITIAN SYSTEMS 

      Autor: Maamache , Mustapha
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We provide a new perspective on non-Hermitian evolution in quantum mechanics by emphasizing the same method as in the Hermitian quantum evolution. We first give a precise description of the non unitary transformation  and ...

    • NOTE ON THE PROBLEM OF MOTION OF VISCOUS FLUID AROUND A ROTATING AND TRANSLATING RIGID BODY 

      Autor: Deuring, Paul; Kračmar, Stanislav; Nečasová, Šárka
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      We consider the linearized and nonlinear systems describing the motion of incompressible flow around a rotating and translating rigid body Ɗ in the exterior domain Ω = ℝ3 \ D , where Ɗ ⊂ ℝ3 is open and bounded, with ...

    • NOTE ON VERMA BASES FOR REPRESENTATIONS OF SIMPLE LIE ALGEBRAS 

      Autor: Pošta , Severin; Havlíček , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      We discuss the construction of the Verma basis of the enveloping algebra and of finite dimensional representations of the Lie algebra An. We give an alternate proof of so-called Verma inequalities to the one given in [1] ...

    • NOx EMISSIONS FROM BUBBLING FLUIDIZED BED COMBUSTION OF LIGNITE COAL 

      Autor: Skopec , Pavel; Hrdlička , Jan; Opatřil , Jan; Štefanica , Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper presents experimental results of NOx emission measurements for combustion of two kinds of coal in a bubbling fluidized bed combustor. The tested fuels were Czech brown coal (CBC) and German young brown coal ...