Browsing 2009 by Title

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  • Absorption and Emission Spectra of Ga0.017Ge0.25As0.083S0.65 Glasses Doped with Dy3+ 
    LUPAN, Elena; CIORNEA, Viorel; IOVU, Mihail (Technical University of Moldova, 2009)
    The absorption spectra in the visible and near IR regions for Ga0.017Ge0.25As0.083S0.65 are investigated. The visible luminescence from Dy3+, and co-doped with Ho3+ and Dy3+ ions embedded in Ga0.017Ge0.25As0.083S0.65 glass ...
  • Acordarea Regulatoarelor în Sisteme de Reglare în Cascadă cu Trei Contururi cu Inerţie 
    COJUHARI, Irina (Technical University of Moldova, 2009)
    A tuning algorithm of linear controllers P, PI, PID in multiple-loop feedback control systems is proposed in this paper. The control objects consist of three subprocesses, which are described by dynamical models with inertia ...
  • Algoritm de Acordare a Regulatoarelor în Sisteme de Reglare în Cascadă cu Trei Contururi cu Inerţie şi Timp Mort 
    COJUHARI, Irina; IZVOREANU, Bartolomeu (Technical University of Moldova, 2009)
    A tuning algorithm of linear controllers P, PI, PID in multiple-loop feedback control systems with three contours is proposed in this paper. The control objects consists from three subprocesses, which are described by ...
  • Analiza Algoritmilor de Segmentare a Imaginilor pentru Aplicaţii de timp real 
    CALMÎCOV, Igor (Technical University of Moldova, 2009)
    În acest articol este descrisă o aplicaţie de segmentare a imaginilor a picăturii de aliaj preluate de camera video. Procesând aceste imagini în timp real sunt extrase unele caracteristici ai formei, în baza cărora se pot ...
  • Analysis and Design of a Specialized Pipeline for Numerical Algorithms Implementation 
    CARBUNE, Viorel; ZAPOROJAN, Sergiu (Technical University of Moldova, 2009)
    The numerical algorithms often bring a lot of elementary calculations which involve the fixed-point multiply, add and subtract operations. Many of these numerical and signal processing algorithms require repetitive use of ...
  • Analysis of Radiation Pattern and Beamforming in Phased Antenna Arrays for Indoor Localization and Scanning Systems 
    MANU, Octavian; DIMIAN, Mihai; NIEUWENHUYSE, Anneleen Van; GRAUR, Adrian (Technical University of Moldova, 2009)
    This paper presents an analysis of radiation pattern and beamforming in phased antenna arrays for indoor localization and scanning based on a triangulation technique. Beamforming is obtained and steered by applying a linear ...
  • Analytical Modeling and Optimization of Micropiezoelectric Energy Harvesting Devices 
    AL-AJMI, Mohammed A (Technical University of Moldova, 2009)
    This work provides an exact analytical dynamics of a cantilever beam bonded with a piezoelectric patch to extract the modal frequencies under open circuit and short circuit electrodes’ conditions. The modal open circuit ...
  • Analytical modeling of energy quantization effects in MOSFETs 
    CHAUDHRY, Amit; ROY, J. N. (Technical University of Moldova, 2009)
    In this paper an analytical model has been developed to study the Energy Quantization Effects occurring in the MOSFETs (Metal Oxide Semiconductor Field Effect Oxide) under various conditions. These effects have resulted ...
  • The application of transition diagrams in data handling processes modeling 
    MAGARIU, Nicolae (Technical University of Moldova, 2009)
    The method of data handling processes modeling by means of transition diagrams and transition diagram systems is considered. As well as the method of program specification construction on base of dynamic model representation ...
  • Application of Undular Analysis for Description of the Physical Phenomena 
    MIRONOV, Bettin (Technical University of Moldova, 2009)
    The spectral decomposition is one of the most fruitful methods applied in technique. However more often spectroscopic decomposition is applied to signals and functions, time-dependent, less often from spatial coordinates. ...
  • Artificial pinning centers on the MgB2 surface: the influence on the vortex flow in magnetic field 
    SURDU, A.; KOCH, Th.; ZDRAVKOV, V.; SOCROVISCHIUC, A.; PREPELITSA, A.; OBERMAIER, G.; WIXFORTH, A.; HAHN, H.; SIDORENKO, A. S. (Technical University of Moldova, 2009)
    Superconducting properties of high-quality films of the first multiband superconductor, magnesium diboride, have been investigated. The dominating role of thermally activated flux flow for the low parts of the superconducting ...
  • Aspects of application of the impedance simulators for impedance measurement 
    NASTAS, Vitalie (Technical University of Moldova, 2009)
    The paper relates about some aspects of application of the metrological impedance simulators (MIS) for high precision impedance measurement. The classification of these devices and the most important requirements are ...
  • Aspects of generating the tests in the DALG-I concept 
    COJOCARU, Ion; ŞERBANAŢI, Luca; PĂVĂLOIU, Bujor; RADOVICI, Alexandru; VASILOŢEANU, Andrei (Technical University of Moldova, 2009)
    Once with the enhancement of the integrated circuits (IC), the number of tests and the time of creating them was augmenting much, and the detecting errors tests from the combinational circuits (CC) with convergent fan-out ...
  • Bend Testing of Tin Doped Bismuth Microwire 
    DYNTU, M.; DONU, S.; IACOBCIUC, D. (Technical University of Moldova, 2009)
    The paper presents the results of mechanical bend testing of tin doped bismuth microwire in glass isolation with internal diameters (1.5 – 15) μm and external (10 – 60) μm. The impurity of tin in quantity 0.01, 0.05 and ...
  • A brief history of the study of word-formation. Some basic concepts 
    CATERENCIUC, Svetlana (Technical University of Moldova, 2009)
    This paper is mainly an introduction to some of the terminology required in the study of word formation. Much of the terminology used will help place word-formation in its broader framework. The study of word-formation is ...
  • Chemical Deposition of Photosensitive Media for Recording of the Optical Information 
    VERLAN, V. I.; BUZURNIUC, S. A. (Technical University of Moldova, 2009)
    Thin layers of amorphous chalcogenides semiconductors of mixed composition As2(SxSe1-x)3 for х in the interval 0 - 1 were obtained from chemical solutions of compounds arsenic selenide (As2Se3) and arsenic sulfide (As2S3). ...
  • Chemical Method for the Gallium Arsenide Rectification Structure Divide into Crystals 
    BARANOV, Simion; CINIC, Boris; DUDCA, Tudor; SUMAN, Victor (Technical University of Moldova, 2009)
    Thise investigations are referred to power semiconductor devices (PSD) area manufactured by gallium arsenide (GaAs) advanced technology. The work’s objective is excluding the break-down effect on the p-n junction surface ...
  • Clasificări şi formalizări pentru şabloane de proiectare 
    CIORBĂ, Dumitru; BEŞLIU, Victor (Technical University of Moldova, 2009)
    Utilizarea tehnicilor formale sau semi-formale în procesele de proiectare, în cel mai apropiat timp poate duce la apariţia unor instrumente automatizate de design şi refactoring a sistemelor obiect-orientate. Iar prin ...
  • Comparison of Morphologies of Porous InP Layers Obtained in Different Electrolytes 
    SPRINCEAN, V.; COJOCARU, A.; MONAICO, E.; TIGINYANU, I.; FÖLL, H. (Technical University of Moldova, 2009)
    In this paper we present the possibility for nanostructuring of InP using an electrolyte based on aqueous solution of NaCl. A classical grow of columnar pores was obtained. In particular it was observed that there is no ...
  • Compensarea şi mascarea erorilor în conceptul DALG-II 
    COJOCARU, Ion; ŞERBANAŢI, Luca; PĂVĂLOIU, Bujor; RADOVICI, Alexandru; VASILOŢEANU, Andrei (Technical University of Moldova, 2009)
    Functionality increase led to maximizing of the integrated circuits (IC) complexity. The time for test generation reached up to 10-15 months, and some of the faults of the combinational circuits (CC) with convergent fan-outs ...

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