Browsing 2015 by Issue Date

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  • Estimarea calității de transmisiune a informației în sistemele de radiocomunicații și STIFO 
    CHIHAI, A. G.; NISTIRIUC, A. P.; BEJAN, N. P.; IAZLOVEŢCHI, M. L.; BAXAN L. V.; NISTIRIUC, P. V.; POPOVICI, N.; DRAGUŢAN, N.; RUSSU, G. (Technical University of Moldova, 2015)
    For radio systems and FOTS (Fiber Optic Transmission Systems) were estimated values of SNR (Signal-to Noise Ratio), taking into account that are known values of BER (Bit Error Rate) and type of modulation.
  • Dynamics of Quantum Dots Lasers under the Influence of Double Cavity External Optical Feedback 
    SANDUTA, A.; RUSU, S. S.; TRONCIU, V. Z. (Technical University of Moldova, 2015)
    We report the results of numerical investigations of the dynamical behavior of an integrated device composed of a semiconductor laser with quantum dots active medium and a double cavity that provides optical feedback. Due ...
  • Birefringence in Quantum Wells 
    DOROGAN, A.; DOROGAN, V.; SYRBU, N.; ZALAMAI, V. (Technical University of Moldova, 2015)
    Polarization dependences of reflection and wavelength modulated reflection spectra of quantum wells In0.68Al0.1Ga0.13As/ In0.42Al0.22Ga0.24As were investigated. Spectral dependences of refractive indices, extinction ...
  • Stationary States of External Cavity Diode Laser 
    TRONCIU, V. Z.; RADZIUNAS, M.; WENZEL, H. (Technical University of Moldova, 2015)
    We report the results of numerical investigations of the stationary states of an external cavity diode laser (ECDL) device composed of a semiconductor laser, a lens, and a distant Bragg grating, which provides optical ...
  • Theoretical Study of External Cavity Diode Laser Using Simulation of Modes 
    DUMANOV, E. V.; TRONCIU, V. Z.; DUMANOV, E. V.; WENZEL, H. (Technical University of Moldova, 2015)
    This paper reports the results of numerical investigations of the modal behavior of a laser with an external feedback. The numerical calculations are based on the solution of the homogeneous coupled-wave equations using a ...
  • Intelligent Traffic Management – Сhisinau Smart City 
    TURCANU, D. N.; ANDRONIC, S. M.; NISTIRIUC, P. V.; CHIHAI, A. G.; TURCANU, T. P. (Technical University of Moldova, 2015)
    In the XXI century, the state of the urban environment is determined not only by the presence of infrastructure, ie, material resources. Smart cities need smart solutions that provide high quality new development.
  • Structure Chart of Pseudo-Ring Testing and Evaluation of its Algorithmic and Hardware Complexity 
    GRIŢCOV, Serghei (Technical University of Moldova, 2015)
    This paper presents different modifications of structure of pseudo-ring testers and determination of its algorithmic an hardware complexity, as well as the types of faults the testers allow to detect.
  • Utilizarea filtrului Wiener pentru restabilirea imaginilor distorsionate prin focus blur și motion blur 
    CAPCANARI, I.; LAZĂR, D.; GRIŢCOV, S.; POCOTILENCO, V.; SOROCHIN, G. (Technical University of Moldova, 2015)
    Wiener theory, formulated by Norbert Wiener in 1940, forms the foundation of data-dependent linear least square error filters. Wiener filters play a central role in a wide range of applications such as linear prediction, ...
  • Automation of Satellite Tracking for Worldwide Ground Stations 
    MARGARINT, Andrei; BARBOVSCHI, Alexandru (Technical University of Moldova, 2015)
    Ground Station of National Centre of Spatial Technologies is a complex system that can automatic control, RF receive and track space satellites from different places on Earth. GS consists of a server side software that ...
  • Implementarea serviciilor federative în RM 
    POCOTILENCO, V.; BOGATENCOV, P.; SCLIFOS, C. (Technical University of Moldova, 2015)
    Contemporary level of scientific and technical development is due to sharing relevant information and in this case it is very important to organize access to various informational systems with protected informational ...
  • Metode optice de măsurare a microfirului diametrului miezului şi grosimii învelişului 
    DOROGAN, V.; MUNTEANU, E.; SECRIERU, V.; ZAPOROJAN, S.; LARIN, V. (Technical University of Moldova, 2015)
    The technologies for production of microwire, with metallic core and glass coat, are progressing continuously. The microwire applications domains also extend quickly. Therefore it is required to be improved the control of ...
  • Efficient and Flexible Live Streaming from Telescope 
    BARBOVSCHI, A.; MARGARINT, A. (Technical University of Moldova, 2015)
    One of the aspects of educational use of an astronomical observatory is organizing live streaming sessions. In order to succeed it is necessary to choose the right methodology of organizing such events, which would allow ...
  • Wavelength Modulated Optical Spectra of TlGaS2 Crystals 
    BEJAN, N. P.; NEMERENCO, L. L.; MASNIC, A. (Technical University of Moldova, 2015)
    Wavelength modulated reflection spectra measured at temperatures 14 K and 300 K in E||a and E||b polarizations for TlGaS2 crystals were investigated. The ground and excited states of excitons B2u in E||a polarization and ...
  • Π-тестирование с применением LFSR на основе приводимых полиномов 
    ГРИЦКОВ, С. (Technical University of Moldova, 2015)
    In this paper pseudo-ring testing of digital memory with LFSR on bases of reducible polynomial is described. Resolution of this kind of pseudo-ring tests is presented for stuckat and coupled faults, and comparative analysis ...
  • Modernizarea sistemului de tracţiune a motorului de curent continuu pentru troleibuzul articulat UMZ-T1 
    MOTROI, Al.; EŞANU, V.; NUCA, I.; OLEVSCHI, G.; NUCA, I. (Technical University of Moldova, 2015)
    The aim of this paper is to present the upgrade of direct current traction on compound trolleys. Firstly, we will present the actual state and a general description of the compound trolleybus and its control system, the ...
  • Разработка системы симулирования для определения резолюции π-тестов 
    ГРИЦКОВ, C.; ЛАЗЭР, Д.; СОРОКИН, Г. (Technical University of Moldova, 2015)
    This paper describes elaboration of a simulation system of pseudo-ring testing in C++ Builder. The elaborated application allows to simulate pseudo-ring testing with generation of different kinds of faults and calculate ...
  • Lampă Stradală LED42. Posibilitatea asamblării în RM 
    SECRIERU, V.; VIERU, S.; MUNTEANU, E.; DOROGAN, V.; VIERU, T. (Technical University of Moldova, 2015)
    In this article are described light sources on the base of 1W diodes. The list of components, used modules, recent prices on the national and foreign market, opportunities of the light lamps assembly in Moldova are presented. ...
  • Stabilitatea circuitelor selective pe baza convertoarelor de impedanță 
    AVRAM, I. (Technical University of Moldova, 2015)
    In this paper we study the stability of frequency selective circuits based on impedance converters. We calculated the critical amount of the setting element and the critical frequency that can be generated by selective ...
  • Transport Properties of Nanostructured Organic Crystal of TTT(TCNQ)2 
    SANDULEAC, I.; BALMUS, I.; CASIAN, A. (Technical University of Moldova, 2015)
    The numerical modeling of electrical conductivity and thermopower of TTT(TCNQ)2 organic crystals is performed in order to investigate the prospect of using the mentioned crystals as thermoelectric material. The calculus ...
  • Peierls Structural Transition in Organic Crystals of TTF-TCNQ in the 3D Model 
    ANDRONIC, S.; BALMUS, I.; CASIAN, A. (Technical University of Moldova, 2015)
    Peierls transition in organic crystals of TTF-TCNQ type is studied in 3D approximation. For a more complete description of the crystal model, two the most important electronphonon interactions are considered. The transition ...

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