Articole din publicaţii internaţionale: Recent submissions

Now showing items 1401-1420 of 3213

Stochastic generalized fractional HP equations and applications

ALBU, I. D.; NEAMŢU, M.; OPRIŞ, D. (Cornell University, 2009)

In this paper we established the condition for a curve to satisfy stochastic generalized fractional HP (Hamilton-Pontryagin) equations. These equations are described using Itˆo integral. We have also considered the case ...
Provocări ale dezvoltării economiei a Republicii Moldova: aspecte demografice

SÂRBU, Ion; ALBU, Ion (Academia de Studii Economice din Moldova, 2013)

Sustainable economic growth of the Republic of Moldova depends on policies promoted by the governments and motivating citizens. Demographic constraints undermine the possibility of a sustainable economic growth for a long ...
On the discrete-continuous dynamical systems

OPRIS, D.; ALBU, I. D. (Universitatea “Al. I. Cuza” Iaşi, 1997)

The main idea of our study is a direct treatise of the dynamical systems of discrete-continuous type our aim is to: formulate a discrete-continuous variational principle and deduce the discrete-continuous Euler-Lagrange ...
Mathematical Model for Diamond-Type Crystals with Impurities or Defects

OPRIŞ, D.; ALBU, I. D. (Politehnica University of Bucharest, 1998)

This work develops the geometry and dynamics of diamond-type crystals with impurities or defects and symmetry from the perspective of Langrangian mechanics. We begin by formulating continuous–discret Lagnge-d`Alembert ...
Leibniz dynamics with time delay

ALBU, Ion Doru; OPRIŞ, Dumitru (Cornell University, 2005)

In this paper we show that several dynamical systems with time delay can be described as vector fields associated to smooth functions via a bracket of Leibniz structure. Some examples illustrate the theoretical considerations.
Geometrical Aspects of the Covariant Dynamics of Higher Order

OPRIŞ, D.; ALBU, I. D. (Springer Nature Switzerland, 1998)

We present some geometrical aspects of a higher-order jet bundle which is considered a suitable framework for the study of higher-order dynamics in continuous media. We generalize some results obtained by A. Vondra, [7]. ...
Euler-Poincarè-Poisson Equations for Semidirect Products and Principal Bundles

OPRIŞ, D.; ALBU, I. D. (Politehnica University of Bucharest, 1999)

A variational approach for a discrete Lagranian on a semidirect product and on principal bundle is developed.
Connexions métriquesk-plates

ALBU, I. D. (Springer Nature Switzerland, 1977)

En effet, soit/~. une connexion m~ trique de M dont la distribution horizontale est zln. La structure de trivialisation de~, pour chaque x EM, assure l'existence d'une section locale cr~: U-~ OhM, xE U. Pour n'importe quel ...
Applicability of Databases in the Real Estate Valuation Process in the Conditions of the Emerging Economy of the Republic of Moldova

ALBU, Svetlana; ALBU, Ion (Scientific Research Publishing Inc., 2021)

The real estate valuation activity in the Republic of Moldova dates from 2002, with the adoption of Law No. 989 on Evaluation Activity. Nevertheless, the legislative and methodological framework is extremely limited. There ...
The worldwide methodologies for assessing living standards

GOROBIEVSCHI, Svetlana; NĂDRAG, Lavinia (Addleton Academic Publishers, 2011)

In this article the authors show how they determined the stages of development of the methodological concepts used for assessing the quality of life (QL) from a worldwide perspective. Using a wide range of theoretical and ...
The role of business incubators as instrument management in contemporary economy

GOROBIEVSCHI, Svetlana; DODU, Aliona (Editura Independenţa Economică, 2016)

The development of entrepreneurship in the economies of different countries is the driving force of the economic competitiveness, wich ensure the innovation on the market of the product and service. In the literature there ...
Morbidity issues concerning child population under 18 years of age in Moldova, by birth defects, 2004-2015

GOROBIEVSCHI, Svetlana; BUTA, Galina (Universitatea Spiru Haret, Bucureşti, 2016)

The paper presents a comprehensive study of the dynamics of statistical indicators of congenital malformations in the pediatric population in Moldova during 2004-2015. The study analyzes some aspects which lead to child ...
Public-private partnership role in rural management in Republic of Moldova

GOROBIEVSCHI, Svetlana (Institutul de Cercetări Economice şi Sociale „Gheorghe Zane”, Iaşi, 2010)

The article described the current problems of rural communities in Moldova in transition stage. The author examines rural management activities and determine its problems. Among the key problems is that the problem of rural ...
Superconductivity up to 36 K in nano-width crystallite interfaces of Bi1-x-Sbx(x≤0.2) alloys

MUNTYANU, F. M.; CHISTOL, V. (Institutul de Fizică Aplicată, 2010)

Magnetic properties of high quality bicrystals (in some samples the Dingle temperature of charge carriers was even less than 1 K) and tricrystals of Bi1-x-Sbx(x ≤ 0.2) alloys were studied in the temperature range(1.8 -100) ...
Superconducting crystallite interfaces with Tc up to 21 K in Bi and Bi-Sb bicrystals of inclination type

MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A.; CHISTOL, V. (Elsevier, 2008)

Magnetic properties of high quality Bi and Bi1−x–Sbx (x≤0.07) bicrystals of inclination type were studied in the temperature range (1.8–30) K using a quantum design SQUID magnetometer. It is found that the crystallite ...
Superconducting and weak ferromagnetic features at interfaces of bicrystals of 3D topological insulator BI 1-XSB X

MUNTYANU, F. M.; ZALESKI, A. J.; ROGACKI, K.; CHISTOL, V. (Institutul de Fizică Aplicată, 2018)

In this report we present the results of study of the magnetic and superconducting properties of bicrystals of 3D topological insulator (TI) Bi1-xSbx (0 ≤x ≤ 0.2) in temperature range 1.8-100K using Quantum Design SQUID ...
Peculiarities of quantium oscillations of longitudional Hall effect in high magnetic firelds im bismuth becrystals

MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A.; PALEWSKI, T.; CHISTOL, V. (American Romanian Academy of Arts and Science, 2013)

We report the results of longitudinal Hall effect (LHE) study in Bi bicrystals with nano-width superconducting crystallite interfaces (CIs), converted by magnetic field or current in normal state, in order to elucidate the ...
On the peculiarities of galvanomagnetic effects in high magnetic fields in twisting bicrystals of the 3D topological insulator Bi1–x Sb x (0.07 ≤ x ≤ 0.2)

MUNTYANU, F. M.; GHEORGHITSA, E. I.; GILEWSKI, A.; CHISTOL, V.; BEJAN, V.; MUNTEANU, V. (Springer Nature Switzerland, 2017)

Galvanomagnetic effects in twisting bicrystals of Bi1 – xSbx alloys (0.07 ≤ x ≤ 0.2) at low temperatures and in magnetic fields up to 40 T are studied. It is found that, at small crystallite misorientation angles, the ...
Ferromagnetism in supraconducting bicrystals of Bi-Sb alloys

MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A. J.; CHISTOL, V. (Institutul de Fizică Aplicată, 2010)

We studied the magnetic moment m(T) of superconducting bicrystals of B1-x – Sbx (x ≤ 0.2) alloys (diamagnetic and paramagnetic), as a function of applied magnetic field up to 20 kOe at several temperatures (2-100 K).
Magnetization anomalies in superconducting interfaces of bicrystals and tricrystals of Bi1-x - Sbx alloys

MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A. J.; CHISTOL, V. (Institutul de Fizică Aplicată, 2010)

We have studied the magnetic properties of the bicrystals and tricrystals of Bi1-x - Sbx (x ≤ 0.2) alloys in the temperature range (1.8 - 100) K and magnetic fields up 20 kOe. It is using the superconducting quantum ...

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