Facultatea Electronică şi Telecomunicaţii: Recent submissions

Now showing items 901-920 of 1268

Simple chaos generator with robust operation

COJOCARU, Victor; TEODORESCU, Horia-Nicolai (Tehnica UTM, 2012)

We describe a simple chaos generator circuit build based on the LM555 timer. This simple circuit can be assembled on a test board shortly. The circuit can be used for studying the processes related to nonlinear dynamics ...
The utilization of computational linguistic resources in morpho-syntactic disambiguation

GÎSCA, Veronica (Tehnica UTM, 2012)

Syntactic structure of language can be defined by context-free grammars. Contextfree grammars do not facilitate generation of context sensitive aspects, for example, the agreement between different parts of a sentence. ...
Developing graphical user interfaces using human-computer interaction principles

CASIAN, Olga; RAILEAN, Alexandru (Tehnica UTM, 2012)

With the development of modern programming environments, designers and programmers have a large palette of various widgets; however, having them is not enough for designing an efficient graphical user interface. A user ...
Considerations on security management in IP communication networks

GHEORGHICĂ, Daniel; CROITORU, Victor (Tehnica UTM, 2012)

The growing popularity of the Internet has taken many organizations by surprise. Established mechanisms such as fax technology, electronic data interchange (EDI), electronic messaging, and file transfers over private ...
Computing with transient states generated by delay-coupled systems

APPELTANT, L.; SORIANO, M. C.; VAN DER SANDE G.; DANCKAERT, J.; FISCHER, I.; MIRASSO, C. R. (Tehnica UTM, 2012)

Inspired by the way the brain process information, the recently introduced paradigm of reservoir computing has been proven to be very successful in solving certain tasks that are inherently difficult for traditional ...
Sistem de simulare vizuală a proceselor de calcul orientate pe servicii prin reţele petri membranale

ŢURCANU, Iurie; CORDUNENU, Alexei; GUŢULEAC, Emilian (Technical University of Moldova, 2012)

This paper presents a software environment VMPNS for visual simulation of reconfigurable service-oriented computing with membrane Petri nets. It offers an intuitive graphical user interface for designing various elements ...
Research and development of traffic prediction algorithms on cell level in the wide band cellular networks

BARLADEAN, Oleg; SECRIERU, Nicolae; GHINCUL, Alexandru; GHINCUL, Olga (Technical University of Moldova, 2012)

The paper performs research and development of more efective data traffic prediction algorithms in mobile networks using data clustering on the cell level. The developed algorithms were adapted to a specific problem, namely ...
Benefits to the organization decision support systems architecture

PORUŢIU, Anuta (Technical University of Moldova, 2012)

The main objective of this paper is to present in a systematic way some basic concepts of decision support systems architecture. These concepts are used in the area of computerassisted decision use din various economic ...
Surface plasmon resonance in As2Se3 planar waveguides for the IR spectral region

POPESCU, A.; BASCHIR, L.; SAVASTRU, D.; IOVU, M.; STAFE, M.; PUSCAS, N. (Tehnica UTM, 2019)

The solid amorphous materials have some specific optical properties who cannot be finded in the crystalline state. One of the main phenomenon is photo-induced modification of optical constants (n, k), which can be used in ...
Efficient and stable hybrid solar cells of nanostructures and bulk heterojunction Organic semiconductors

RAM, K. S.; SINGH, J. (Tehnica UTM, 2019)

The research and development in the field of organic photovoltaic have gained huge research interests recently. The organic solar cells have exhibited a power conversion efficiency (PCE) up to 12 % . Organic solar cells ...
Study of surface plasmon polarization conversion with Au surface-relief gratings

INDUTNYI, I.; MYN’KO, V.; SOPINSKYY, M. (Tehnica UTM, 2019)

The effect of polarization conversion (PC) caused by excitation of surface plasmons on metal gratings was studied in many theoretical and experimental works. However, these studies mainly concerned the samples with spatial ...
Optical properties of binary and ternary chalcogenides

GALCA, A.-C.; SAVA, F.; SIMANDAN, I.-D.; SOCOL, G.; VELEA, A. (Tehnica UTM, 2019)

Development of memories based on novel chalcogenide materials are among the research directions of many research units aiming discovery of new or improved optical or electric storage media.
Influence of glassy backbone on the photoformation and properties of solid electrolytes Ag: As-S-Ge

TSIULYANU, D.; STRATAN, I.; CIOBANU, M. (Tehnica UTM, 2019)

The work is conducted to clarify the effect of the glassy backbone on the process of fabrication and some properties of solid electrolytes obtained via photodissolution (PD) of Ag. For this purpose the ternary chalcogenide ...
Broad band excitation of RE3+ ions doped into tellurite and antimonite glasses

KOSTKA, P.; ZAVADIL, J.; GLADKOV, P.; YATSKIV, R. (Tehnica UTM, 2019)

Ternary TeO2-ZnO-TiO2 glasses doped with thulium (Tm) and antimonite glasses Sb2O3-PbO-ZnO/ZnS doped with ErCl3 were prepared by using melt quenching method and investigated by means of transmission, and room and low-temperature ...
2D transition metal dichalcogenides for spintronics

COSTACHE, M. V.; BENITEZ, L. A.; ARRIGHI, A.; TORRES, W. S.; TIMMERMANS, M.; SIERRA, J. F.; VALENZUELA, SERGIO O. (Tehnica UTM, 2019)

In this talk I will present recent results regarding spin dynamics in graphene - based transition metal dichalcogenides (TMDC) heterostructures.
Polarization holographic recording of diffractive elements on amorphous chalcogenide nanomultilayers

ACHIMOVA, E. (Tehnica UTM, 2019)

In contrast to the conventional holographic process, in which intensity variations in an interference pattern between an object beam and a reference beam are recorded, polarization holography employs beams with two different ...
Chalcogenide based nano-layered solid electrolytes

TVER’YANOVICH, Yu.; RAZUMTSEV, A.; FAZLETDINOV, T. (Tehnica UTM, 2019)

It is well-known that extensive interphase surface promotes ion conductivity. Nanolayered thin films are suitable for investigation that phenomenon. Films composed of alternating AgI (or Ag2Se) and glass nanolayers were ...
Laser-induced periodic surface structures (LIPSS) of amorphous GST225 thin films upon femtosecond laser irradiation

KOZYUKHIN, S.; LAZARENKO, P.; SMAYEV, M.; VOROBYOV, Yu.; GLUKHENKAYA, V.; SYBINA, Yu.; SIGAEV, V. (Tehnica UTM, 2019)

Ultrashort laser irradiation is proven as an alternative to lithography for nanostructuring surfaces of various materials via formation of laser-induced periodic surface structures (LIPSS) or ripples. In this work, our ...
Grouping of semiconductor materials by degree of atomic structure disorder

POPOV, A. (Tehnica UTM, 2019)

The first practical application of a semiconductor device occurred at the beginning of last century, when a metal-semiconductor contact point was used to demodulate radio signal. However, development of the band structure ...
The direct laser writing micro relief structures on chalcogenide glass by laser beam recorder of master discs

PETROV, V. V.; KRYUCHYN, A. A.; KOSTYUKEVICH, S. A.; RUBISH, V. M. (Tehnica UTM, 2019)

The area of the direct laser writing application is much wider than only recording of optical discs The direct laser writing in photoresist enables to be fabricate a wide range of continuous micro relief phase elements ...

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