Now showing items 165-184 of 200

    • Security of information in university eLearning systems 

      Grzybowski, Rafał (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2011)
      The increase in popularity of university eLearning platforms, supporting traditional methods of education, as well as new communication tools development, make the security issues of information stored in these systems ...
    • Selected aspects of security mechanisms for cloud computing – current solutions and development perspectives 

      Poniszewska-Marańda, Aneta (Komisja Informatyki Polskiej Akademii Nauk, Oddział w Gdańsku, 2014)
      The security aspects of cloud computing, especially the security of data, become more and more important. It is necessary to find and develop the new mechanisms to secure the cloud. The problem presented in the paper ...
    • Self-consistent calculations of the dynamic, thermodynamic and elastic properties of a lattice of atomic crystals 

      Malinowska-Adamska, Cecylia; Słoma, Piotr (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2007)
      The application of the self-consistent phonon theory (SCPT) formulated by Plakida and Siklós on the basis of the double-time Green's function method to the atomic crystals: rare gas solids (RGS), quantum crystals (QC) and ...
    • Sensitivity of tetracene layer as an effect of entanglement 

      Kania, Sylwester; Kościelniak-Mucha, Barbara; Kuliński, Janusz; Słoma, Piotr; Wojciechowski, Krzysztof (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2017)
      Application of the method of quantum-mechanical calculations allowed for studies of variability of interactions between molecules of ethanol and tetracene. Entanglement of quantum states is seen during calculations in ...
    • Simulation of Quantum Resonance in the Quantum Register 

      Ostrowski, Marcin (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology Press, 2018)
      In this paper, we examine whether a quantum computer can efficiently simulate resonant interaction between a pair of two-level quantum systems. We present an algorithm for simulating time evolution of such a system, implemented ...
    • Sliding mode approach to congestion control in connection-oriented communication networks 

      Bartoszewicz, Andrzej; Żuk, Justyna (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2009)
      In this paper, a novel sliding mode flow controller design for the connection-oriented communication networks is proposed. The networks are modeled as discrete time systems with the available bandwidth acting as disturbance. ...
    • Some electrical properties of thin layer of 9,10-dimethylanthracene and 1-acenaphtenol 

      Kania, Sylwester; Kuliński, Janusz; Marciniak, Bernard; Różycka-Sokołowska, Ewa (Lodz University of Technology PressWydawnictwo Politechniki Łódzkiej, 2013)
      Spectral grade materials obtained in zone-melting process from commercially available 1-acenaphthenol and 9,10-dimethyl-anthracene were characterized electrically. The layers vaporized in 10-5Torr vacuum posses high ...
    • Some of the photothermal properties of one- and two-layer structures 

      Pieszyński, Krzysztof (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2007)
      The results of numerical calculations of temperature on a multi-layer structures' surface illuminated with intensity periodically-modulated beam of light are presented. In fact the influence of some geometrical and thermal ...
    • Space-charge-limited currents as an indicator of non-uniform charge traps distribution in thin film dielectrics: numerical solutions 

      Bąk, Grzegorz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2012)
      Space charge limited currents in inhomogeneous thin film insulating systems are studied by means of numerical methods. Calculations for two spatial distribution of traps are presented. The results confirm that the influence ...
    • Spatch based active partitions with linguistically formulated energy 

      Tomczyk, Arkadiusz; Pryczek, Michał; Walczak, Stanisław; Jojczyk, Konrad; Szczepaniak, Piotr (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2010)
      The present paper shows the method of cognitive hierarchical active partitions that can be applied to creation of automatic image understanding systems. The approach, which stems from active contours techniques, allows one ...
    • Spatial frequency filtering of images using the diffraction in acousto-optic cell 

      Pieszyński, Krzysztof (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2012)
      The paper presents the optical spatial frequency filter that allows to filter in real time by using a 0th order diffraction in the acoustooptic cell, which operates in the Bragg regime.
    • Spline interpolation for trap spectroscopy analysis for two cyclic hydrocarbons. 

      Kania, Sylwester; Kuliński, Janusz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2015)
      Cubic spline interpolation gives a tool for obtaining good image of current-voltage characteristics for trap spectroscopy analysis without prior assumption about the trap distribution for 1-acenaphthenol and 9,10-dimet ...
    • Study of electrically induced orientational ordering in mineral oils on the example of orlen oil trafo en. 

      Izdebski, Marek; Adamus, Monika; Jóźwiak, Ewelina; Ledzion, Rafał (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2016)
      A simple model of orientational ordering of molecules in the liquid under the influence of an applied sinusoidal electric field of low frequency is presented. The predicted theoretical dependencies of linear birefringence ...
    • Subwavelength high contrast gratings as optical sensing elements 

      Marciniak, Magdalena; Gębski, Marcin; Dems, Maciej; Czyszanowski, Tomasz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2017)
      Subwavelength high contrast gratings (HCG) can be used as high reflective mirrors and can be used as mirrors of vertical-cavity surface-emitting lasers. HCG mirrors can be designed in such a way that they are extremely ...
    • System for logistics customer service 

      Ochelska-Mierzejewska, Joanna (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2013)
      The main principle of CRM is a customer oriented, consider the desires and expectations. It is necessary to in-depth analysis of the needs to improve the level of customer satisfaction. In this day where the consumeris ...
    • Temperature dependence of the Kerr constant of fomblin M03. 

      Ledzion, Rafał; Górski, Piotr; Izdebski, Marek; Kucharczyk, Włodzimierz (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2016)
      The Kerr constant B of perfluoropolyether Fomblin M03 has been determined within the temperature range 295-370K. At 300K the constant B was found to be equal to 2.8·10-15 m/V2. The measurements indicate that B varies ...
    • Temporal characteristics of DC electric field induced deformations of flexoelectric nematic layers 

      Derfel, Grzegorz; Buczkowska, Mariola (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2012)
      Dynamics of DC electric field induced deformations of flexoelectric nematic layers were studied numerically. The characteristic response times were calculated. It was found that the cooperative effect of flexoelectricity ...
    • The application of artificial neural networks in optimization of heat treatment processes of steel 

      Wołowiec, Emilia; Kula, Piotr (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2011)
      This article is dedicated to processes of vacuum carburization, which constitute an alternative method to industrial multi-segment carburization. Special attention has been paid to the possibility of using artificial neural ...
    • The effect of contrasting selected graphical elements of a web page on information retrieval time 

      Stobińska, Magdalena; Pietruszka, Maria (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2009)
      As online presence plays an increasingly important role in corporate success, the high usability of a company’s website becomes one of its most valuable assets. The time required to reach the needed information, which plays ...
    • The Gentzen sequent calculus in e-testing. Pt. 1: Foundations 

      Niewiadomski, Adam; Indrzejczak, Andrzej (Wydawnictwo Politechniki ŁódzkiejLodz University of Technology. Press, 2010)
      Modern methods and trends in education, especially the so-called e-learning, are undeniably more and more popular and widely applied in recent years. The paper is focused on the subdomain of the e-learning area which is ...