Prohlížení Acta Polytechnica. 2014, vol. 54 dle názvu

Zobrazují se záznamy 63-73 z 73

    • TECHNICAL AND ECONOMIC OPTIMIZATION OF COGENERATION TECHNOLOGY USING COMBUSTION AND GASIFICATION 

      Autor: Lisý , Martin; Baláš , Marek; Špiláček , Michal; Skála , Zdenek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper presents the technical and economic optimization of new microcogeneration technology with biomass combustion or biomass gasification used for cogeneration of electrical energy and heat for a 200 kW unit. During ...

    • THE COUPLED-CLUSTER APPROACH TO QUANTUM MANY-BODY PROBLEM IN A THREE-HILBERT-SPACE REINTERPRETATION 

      Autor: Bishop F., Raymond; Znojil , Miloslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The quantum many-body bound-state problem in its computationally successful coupled cluster method (CCM) representation is reconsidered. In conventional practice one factorizes the groundstate wave functions |Ψ) = eS |Φ) ...

    • THE EFFECT OF ADDING HYDROGEN ON THE PERFORMANCE AND THE CYCLIC VARIABILITY OF A SPARK IGNITION ENGINE POWERED BY NATURAL GAS 

      Autor: Chríbik , Andrej; Polóni , Marián; Lach , Ján; Ragan , Branislav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper deals with the influence of blending hydrogen (from 0 to 50% vol.) on the parameters and the cyclic variability of a Lombardini LGW702 combustion engine powered by natural gas. The experimental measurements were ...

    • THE FLOQUET METHOD FOR PT-SYMMETRIC PERIODIC POTENTIALS 

      Autor: Jones F., H.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      By the general theory of PT-symmetric quantum systems, their energy levels are either real or occur in complex-conjugate pairs, which implies that the secular equation must be real. However, for periodic potentials it is ...

    • THE INFLUENCE OF SIZE FRACTION ON THE COMPRESSIBILITY OF PINE SAWDUST AND THE EFFECTIVENESS CRITERION FOR DENSIFICATION 

      Autor: Matúš , Miloš; Križan , Peter; Kováčová , Monika; Beniak , Juraj
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Particulate matter from biomass, e.g. wood sawdust, is very diverse. The basic parameter describing the densification process of particulate matter is its compressibility, quantified by the coefficient of compressibility. ...

    • THE OPERATING LOAD OF A DISINTEGRATION MACHINE 

      Autor: Beniak , Juraj; Križan , Peter; Matúš , Miloš; Kováčová , Monika
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The process of disintegration is affected by a large number of operating and design parameters which have not previously been described in detail. This paper discusses the effect of the disintegrative surface area on the ...

    • TOWARDS EVOLUTIONARY DESIGN OF COMPLEX SYSTEMS INSPIRED BY NATURE 

      Autor: Vítku , Jaroslav; Nahodil , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This paper presents first steps towards evolutionary design of complex autonomous systems. The approach is inspired in modularity of human brain and principles of evolution. Rather than evolving neural networks or neural-based ...

    • TRACKING DOWN LOCALIZED MODES IN PT-SYMMETRIC HAMILTONIANS UNDER THE INFLUENCE OF A COMPETING NONLINEARITY 

      Autor: Bagchi , Bijan; Modak , Subhrajit; Panigrahi K., Prasanta
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The relevance of parity and time reversal (PT)-symmetric structures in optical systems has been known for some time with the correspondence existing between the Schrödinger equation and the paraxial equation of diffraction, ...

    • USING PHOTOPLETHYSMOGRAPHY IMAGING FOR OBJECTIVE CONTACTLESS PAIN ASSESSMENT 

      Autor: Koeny , Marcus; Blanik , Nikolai; Yu , Xinchi; Czaplik , Michael; Walter , Marian; Rossaint , Rolf; Blazek , Vladimir; Leonhardt , Steffen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      This work presents an extension to the known Analgesia Nociception Index (ANI), which provides an objective estimation of the current depth of analgesia. An adequate “measure” would facilitate so-called balanced anesthesia. ...

    • X-RAY TRANSMISSION AND REFLECTION THROUGH A COMPTON-THICK MEDIUM VIA MONTE-CARLO SIMULATIONS 

      Autor: Eikmann , Wiebke; Wilms , Jörn; Smith K., Randall; Lee C., Julia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The spectral shape of an X-ray source strongly depends on the amount and distribution of the surrounding material. The spectrum of a primary source which is located in an optically thin medium with respect to Compton ...

    • X-RAY VARIABILITY STUDY OF POLAR SCATTERED SEYFERT1 GALAXIES 

      Autor: Beuchert, Tobias; Wilms, Jörn; Kadler, Matthias; Longinotti, Anna Lia; Guainazzi, Matteo; Miniutti, Giovanni; de la Calle, Ignacio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We study 12 Seyfert 1 galaxies with a high level of optical polarization. Optical light emerging from the innermost regions is predominantly scattered in a polar region above the central engine directly in our line of ...