Browsing 2005 by Title

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  • Electrical properties of CuInSe2 crystals obtained by gas transport method 
    GASHIN, P.; KETRUSH, P.; NIKORICH, V.; SUMAN, V.; TAZLAVAN, V. (Technical University of Moldova, 2005)
    The ternary compounds of I-III-VI2 group and their solid solutions recently became one of the most promising materials for the fabrication of high efficiency solar cells. The unique physical properties and relatively low ...
  • Electron and lattice properties of weakly degenerated systems at low temperatures 
    BODIUL, P.; SOROCHIN, S.; COTÎRŞEV, S.; CEBOTĂREANU, A.; ODAINÎII, G.; CEOBANU, S. (Technical University of Moldova, 2005)
    In the present paper two independent methods were used. By the field and temperature dependences of the phonon thermopower in the ultraquantum limit (UQL) and by the temperature dependence of the size-sensitive part of ...
  • Encoding P systems with descriptive membrane timed Petri Nets 
    GUŢULEAC, Emilian (Technical University of Moldova, 2005)
    Petri nets (PN) are very popular formalism for the analysis and representation of concurrent distributed systems that has draw much attention from the community to modeling and verification of this type of systems. P ...
  • Engineering aspect of application of information registers in management of evolutionary social and economic development 
    FEDOTOVA, Natalia; MARKOVA, Elena (Technical University of Moldova, 2005)
    Today management of open systems is based on untied among themselves conceptual positions and theories of various sciences. It leads to to inadequate management of parts of uniform system and periodic occurrence of critical ...
  • Epitaxial In2O3 layers for chemical sensors: structural and surface characterization 
    BRINZARI, V.; KOROTCENKOV, G.; MASEK, K.; MATOLIN, V.; LIBRA, J.; KAMEI, M. (Technical University of Moldova, 2005)
    Indium oxide is one of the basic oxides, which have been extensively studied [1-3] due to its prominent applications for gas sensor design, and as modeling material, possessed of some interesting chemical and structural ...
  • An estimate of phonon parameters errors calculated by dispersion analysis method with help of genetic algorithm 
    ZAHAROV, I. S.; KNJAZEV, A. F.; KOCHURA, A. V.; KURKIN, A. Y. (Technical University of Moldova, 2005)
    The basic task of mathematical processing of reflectance spectra is the calculation of the dielectric function of the substance, which describe response of a crystal to an external electromagnetic field. One of effective ...
  • Evolution of scanning and of the probe microscope checking methods of the electronic products 
    ARMENCEA, Nicolae (Technical University of Moldova, 2005)
    It is organized comparative analysis of possibilities, merits and demerits of the laser scanning and electronic microscopic methods of checking the electronic products. There are considered the principles of operation of ...
  • The examination support in sonographic investigations 
    RÎBAC, Elena; COJOCARU, Svetlana; GAINDRIC, Constantin; PUIU, Sergiu; ŢURCANU, Vasile (Technical University of Moldova, 2005)
    The principles of interface design for support decision systems in ultrasound diagnosis are examined and their implementation for a specific system oriented to the investigation of abdominal region is exposed.
  • Exciton properties of nanoscale heterostrucrures AlxGa1-xN/GaN/AlxGa1-xN 
    NIKA, D. L.; POKATILOV, E. P.; FOMIN, V. M.; DEVREESE, J. T. (Technical University of Moldova, 2005)
    For the heterostructures AlxGa1-x N/GaN/AlxGa1-x N with different thicknesses of the GaN quantum wells and AlxGa1-xN barriers, we use an exciton model, which includes the interaction of an electron and a hole with deformations ...
  • Exciton-phonon spectra in CuIn1-XGaXS2 crystals 
    NEMERENCO, L. L. (Technical University of Moldova, 2005)
    In this work, the wave-length derivative reflection (WDR) spectra of CuIn1-xGaxS2 crystals have been investigated in the region of A, B and C series. The n = 1, n = 2 and n = 3 states are determined and centers of exciton ...
  • Excitonic luminescence of the tungsten disulfide crystals intercalated with halogen molecules 
    DUMCHENKO, Dmitry (Technical University of Moldova, 2005)
    The radiative recombination in the layered disulfide transition metal dichalcogenide compounds 2H-WS2:I2 and 2H-WS2:Br2 has been investigated. It is shown that the strong photoluminescence (PL) of these indirect band gap ...
  • A fast vector quantization image encoding using Tchebichef moments 
    BELDIANU, Spiridon Florin (Technical University of Moldova, 2005)
    The codeword searching sequence is sometimes vital to the efficiency of a VQ encoding algorithm. In this paper, we present a fast encoding algorithm for vector quantization that uses Tchebichef moments of an image block ...
  • Flux flow in superconducting MgB2 films 
    KOCH, Thomas (Technical University of Moldova, 2005)
    In this work the experimental investigation of the resistive transitions broadening for magnesium diboride films and their microstructure is reported. The MgB2 films were prepared by dc-magnetron sputtering. To explore the ...
  • The forming of serviceability’s estimation parameters of nonlinear executive devices 
    POPESCU, Anatol; BESETEA, Anatol; BALAN, Iurie (Technical University of Moldova, 2005)
    The efficient condition of technical devices (TD) assumes these devices’ performance of set functions, keeping key parameters (KP) within the limits, established by normative and technical documentation. When defining the ...
  • FPGA - based implementation of safe Petri nets models 
    ABABII, V.; SUDACEVSCHI, V. (Technical University of Moldova, 2005)
    In this paper a hardware implementation method of Safe Petri Nets (SaPN) models is proposed. Mapping of SaPN models into FPGA is based on creating of the connections between selected functional elements places P and ...
  • Fuzzy controller for hand prosthesis 
    CHIVU, Catrina (Technical University of Moldova, 200)
    The present paper presents a fuzzy controller for the DC motor. This motor was designed starting from the idea that it will actuate hand prosthesis. Simulation of the motor and fuzzy controller was done using Delphi ...
  • Gas sensors research and control system 
    BRAGARENCO, A.; PLOTNIC, P.; SONTEA, V. (2005)
    An installation for the gas sensors research has been made. The installation is connected to the computer by AT90S8535 microprocesor. The device allows obtaining the following dependences simultaneously: sensibility ...
  • The gated amplifier - discriminator for measurement of temporary parameters of electronic schemes 
    MIRONOV, B.; MIRONOVA, M. (Technical University of Moldova, 2005)
    In practical experimental production both application of digital chips and other electronic circuits, it happens it is necessary to make their selection and classification on temporary parameters. The application of usual ...
  • The gated amplifier - discriminator for measurement of temporary parameters of electronic schemes 
    MIRONOV, B.; MIRONOVA, M. (Technical University of Moldova, 2005)
    In practical experimental production both application of digital chips and other electronic circuits, it happens it is necessary to make their selection and classification on temporary parameters. The application of usual ...
  • The growth and characterization of IrO2 1D nanocrystals on sapphire substrates 
    KOROTCOV, Alexandru; HUANG, Ying-Sheng; TSAI, Dah-Shyang (Technical University of Moldova, 2005)
    Well-aligned IrO2 nanocrystals (NCs) have been grown on sapphire (SA) substrates by rf magnetron sputtering using Ir metal target. The surface morphology and structural properties of the as-deposited NCs were characterized ...

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