Now showing items 21-40 of 200

    • Classification of Objects in a Point Cloud using Neural Networks 

      Daszuta, Marcin; Napieralska-Juszczak, Ewa (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology Press, 2019)
      3-dimensional scans captured in shape of point clouds are widely used in many dierent areas. Every such area use dierent kinds of sensors to ac-quire point clouds and do the analysis of the data but each of those needs ...
    • Comparative study of the influence of the reorganization energy on the hole transport of two four-cyclic arenes 

      Kania, Sylwester; Kuliński, Janusz; Sikorski, Dominik (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2017)
      Application of the method of quantum-mechanical calculations allowed the determination of the reorganization energy of the molecules of tetracene and p-quaterphenyl and the estimation of the transfer rate integral between ...
    • Comparison of methods for simulation of the optical properties of VCSELs 

      Więckowska, Marta; Dems, Maciej; Czyszanowski, Tomasz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2017)
      This paper presents the differences arising from the use of scalar (Effective Frequency Method) and vector (Fourier’s and Bessel’s Admittance Methods) calculation methods in optical analysis of arsenide Vertical-Cavity ...
    • Comparison of some properties and molecular structure of MHPOBC and chlorinated MHPOBC 

      Bąk, Grzegorz W. (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology Press, 2020)
      Comparison of molecular structure of MHPOBC and chlorinated MHPOBC has been made and presented in the paper. The main difference in molecular structure of MHPOBC and chlorinated MHPOBC molecules consists in different ...
    • Conditions for having a diffeomorphism between two Banach spaces 

      Galewski, Marek; Galewska, Elżbieta; Schmeidel, Ewa (Department of Mathematics - Texas State University, 2014)
      We provide sufficient conditions for a mapping acting between two Banach spaces to be a diffeomorphism. Standart arguments allow us to obtain a local diffeomorphism. It is proved to be global using mountain pass geometry.
    • Conductivity due to active collisions channel of adsorption of ethanol to thin layer of acenes 

      Kania, Sylwester; Kuliński, Janusz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2012)
      The activation process and the transport process for electrons in the tetracene layers and holes in the p-quaterphenyl layers is considered. Observed dependence of the conductivity on the vapor concentration of the activator ...
    • Conductivity in cured epoxy resins containing a biphenyl unit 

      Włodarska, Magdalena; Izdebski, Marek; Bąk, Grzegorz; Mossety-Leszczak, Beata; Galina, Henryk (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2010)
      Conductivity of two epoxy matrices based on the same monomer was compared. The epoxy monomer had symmetric structure and contained the biphenyl group which induced additional phase transitions in the pure material. Two ...
    • Correlated networks in the adsorption enhanced currents. 

      Kania, Sylwester; Kuliński, Janusz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2014)
      Injection of carriers into thin layers of acenes due to adsorption of ethanol activator molecules is considered as a electron transfer reaction between two phases. Complexity of the processes may be diminished with applying ...
    • Correlated networks in the adsorptionenhanced currents 

      Kania, Sylwester; Kuliński, Janusz (Lodz University of Technology PressWydawnictwo Politechniki Łódzkiej, 2014)
      Injection of carriers into thin layers of acenes due to adsorption of ethanol activator molecules is considered as a electron transfer reaction between two phases. Complexity of the processes ...
    • Curing conditions and dielectric observation of an epoxy system based on Epidian 6 

      Włodarska, Magdalena; Skurpel, Bartosz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2013)
      In this work the dielectric properties and curing conditions of a selected epoxy resin are presented. The curing system consists of Epidian 6 with DDM amine. In the first step, optimal curing conditions were determined for ...
    • Curing process and the curing product of a nematic epoxy resin containing ester groups 

      Włodarska, Magdalena; Mossety-Leszczak, Beata; Bąk, Grzegorz; Galina, Henryk (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2007)
      Curing process and the product of curing of one liquid crystalline epoxy monomer with a standard omine were examined. The reactions were monitored by DSC measurement and dielectric spectroscopy. Progress of curing of the ...
    • Current dependence of resistances and capacitances in a vertical-cavity surface-emitting laser 

      Komar, Paulina; Śpiewak, Patrycja; Gębski, Marcin; Lott, James A.; Wasiak, Michał (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2017)
      Based on the model of impedance and modulation time constants for vertical-cavity surface-emitting lasers (VCSELs) we study the resistances and capacitances of an equivalent circuit as a function of the current flowing ...
    • Dedicated Type-2 Fuzzy Logic Systems: A Novel Approach to DeNOx Filtration Systems 

      Niewiadomski, Adam; Kacprowicz, Marcin (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology Press, 2018)
      The paper presents some novel research on applications of Type-2 Fuzzy Logic Systems to support the Selective Catalytic Reduction process (SCR). The aim of the research is to design and test higher order fuzzy logic systems ...
    • Detection of line segments 

      Tomczyk, Arkadiusz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2014)
      In the paper a method of line segment detection in the images is presented. It bases on existing LSD approach which was designed to be a parameterless technique dedicated to analysis of real world scenes. In consequence ...
    • A DFT study of reorganization energy of some chosen carbazole derivatives 

      Kania, Sylwester; Kościelniak-Mucha, Barbara; Kuliński, Janusz; Słoma, Piotr; Wojciechowski, Krzysztof (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology Press, 2020)
      Strong efforts toward finding an organic semiconductor with a molecule characterized by a low charge transfer energy applying quantum-chemical calculations are undertaken. Density Functional Theory (DFT) calculations ...
    • Dielectric and flexoelectric deformations induced by ac electric field in insulating nematic layers 

      Derfel, Grzegorz; Buczkowska, Mariola; Guzowski, Jakub (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2010)
      The deformations of homeotropic nematic layers induced by ac electric field of frequency f were studied numerically. Two kinds of nematic liquid crystals with small negative dielectric anisotropy, Δε < 0, were considered: ...
    • Dielectric and optical properties of liquid crystal 1H6Bi 

      Wojciechowski, Marek; Tykarska, Marzena; Bąk, Grzegorz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2012)
      Recently synthesized antiferroelectric liquid crystal 1H6Bi shows special optical properties related to change in handedness of the ferroelectric helix. The broadband dielectric measurements of this compound has been carried ...
    • Dielectric characteristics of antiferroelectric liquid crystalline mixture 

      Wojciechowski, Marek (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2008)
      Mixture of liquid crystals, with induced antiferroelectric phase has been studied by means of dielectric spectroscopy. The dielectric measurements were carried out in a cell with gold electrodes at planar orientation. The ...
    • Dielectric properties of antiferroelectric liquid crystal 4F5Bi(2F) 

      Wojciechowski, Marek; Tykarska, Marzena (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2011)
      Recently synthesized an antiferroelectric liquid crystal compound has been studied by means of dielectric spectroscopy. The dielectric measurements were curried out in a cell with gold electrodes at planar orientation. The ...
    • Dielectric properties of ferrielectric phase induced in liquid crystal mixture 

      Wojciechowski, Marek (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2010)
      Mixtures of two liquid crystalline compounds (which do not exhibit antiferroelectric phases separately) show ferrielectric phase in a broad temperature range in 5:5 and 3:7 compositions. The dielectric spectroscopy technique ...