CILOCI, Rafael(Institutul de Cercetari Economice şi Sociale “Gheorghe Zane”, Iaşi, 2020)
Nowadays a special attention is drawn to sustainable development that can be developed by different factors including development of entrepreneurship. The Entrepreneurship is a determining factor for creating perspectives ...
SAVA, Lilia; GUJUMAN, Lucia(Institutul de Cercetari Economice şi Sociale “Gheorghe Zane”, Iaşi, 2018)
In conditions of growing technical level of organizations, training and professional development of employees has become a strategic element and a source for competitiveness advantage for all organizations. Innovation ...
TIMCO, Carolina; ŢURCANU, Tatiana; ŢURCANU, Dinu(Institutul de Relaţii Internaţionale din Moldova, 2016)
Societatea informaţională după unii autori este o urmare firească a evoluţiei omenirii şi este o realitate pe care o trăim actualmente. Articolul descrie procesul de constituire a societăţii informaţionale, premisele care ...
ŢURCAN, Iuliu; ROŞCA, Olga(Institutul de Relaţii Internaţionale din Moldova, 2016)
Importanţa amenajărilor hoteliere în vederea dezvoltării industriei turismului este indispensabilă, reieşind din considerentele că amenajările hoteliere se dezvoltă ca urmare a existenţei şi valorificării potenţialului ...
SAVA, Lilia(Institutul de Cercetari Economice şi Sociale “Gheorghe Zane”, Iaşi, 2020)
Under the conditions of information exploitation, of standing or permanent learning and of efforts for unstoppable renewal, the professional staff development, as a general process of knowledge gathering and amassment from ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; CEBOTARI, I. D.(Springer Nature Switzerland, 2010)
The diagram approach proposed many years ago for the strongly correlated Hubbard model is developed with the aim to analyze the thermodynamic potential properties. A new exact relation between renormalized quantities such ...
MOSKALENKO, V. A.; ENTEL, P.; DIGOR, D. F.; DOHOTARU, L. A.; CITRO, R.(Springer Nature Switzerland, 2008)
We propose a diagram theory around the atomic limit for the single-impurity Anderson model in which the strongly correlated impurity electrons hybridize with free (uncorrelated) conduction electrons. Using this diagram ...
DOHOTARU, Leonid(Institutul de Fizică Aplicată, 2018)
It is well known that orbital degeneracy plays an essential role in the Mott metal-insulator transition. Here, we study the role of the Hund-rule coupling in an orbitally degenerate model using a diagram approach and taking ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; CHEBOTAR’, I. D.; DIGOR, D. F.(Springer Nature Switzerland, 2011)
We investigate the minimal model that takes orbital degrees of freedom into account: the degenerate two-orbital Hubbard model. Our consideration includes the intraatomic Coulomb interaction of two electrons with opposite ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; CITRO, R.(Springer Nature Switzerland, 2010)
We develop a diagram theory for the periodic Anderson model assuming that the Coulomb repulsion of localized f electrons is the main parameter of the theory. The f electrons are strongly correlated and the c conduction ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D.(Springer Nature Switzerland, 2014)
We develop a diagram technique for investigating the twofold-degenerate Anderson impurity model in the normal state with the strong electronic correlations of d electrons of the impurity ion taken into account. We discuss ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D.(Cornell Univesity, 2010)
Diagrammatic analysis for normal state of Hubbard model proposed in our previous paper[1] is generalized and used to investigate superconducting state of this model. We use the notion of charge quantum number to describe ...
MOSKALENKO, V. A.; DOHOTARU, L. A.(Springer Nature Switzerland, 2010)
Diagrammatic approach proposed many years ago for strong correlated Hubbard model is developed for analyzing of the thermodynamic potential properties. The new exact relation between such renormalized quantities as ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; ENTEL, P.; DIGOR, D. F.(Institutul de Fizică Aplicată, AŞM, 2006)
Impurity Anderson Model is the model for a system of conduction electrons that interact with a local spin as just another electrons in f – orbitals. The Hamiltonian of the system contains hybridization interaction between ...
MOSKALENKO, V. A.; DOHOTARU, L. A.(Springer Nature Switzerland, 2010)
Diagrammatic theory for Periodic Anderson Model has been developed, supposing the Coulomb repulsion of f — localized electrons as a main parameter of the theory. f-Electrons are strongly correlated and c-conduction electrons ...
DOHOTARU, L. A.(Institutul de Fizică Aplicată, 2016)
Solution of high-temperature superconductivity problem is closely connected with the construction of the theory of strongly correlated electron systems, which is now the central problem of condensed matter physics.
The ...
MOSKALENKO, V. A.; ENTEL, P.; DOHOTARU, L. A.; CITRO, R.(Springer Nature Switzerland, 2009)
We propose a diagrammatic theory around the atomic limit for the normal state of the Anderson impurity model. The new diagram method is based on Wick’s theorem for conduction electrons and a generalized Wick’s theorem for ...
MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D.(Institutul de Fizică Aplicată al AŞM, 2012)
We study the influence of the intra-atomic Coulomb interactions of the two electrons with opposite spins situated on the same or different orbitals and intra-atomic exchange is analyzed. We discuss the properties of the ...
PRUTEAN, Serghei; LUPAȘCU, Zinaida(Universitatea de Studii Europene din Moldova, 2019)
Marxian philosophy looks at the world as a set of processes whose unfolding must be analyzed theoreticaly, not as a set of things that can be understood as isolated observable facts. What must be understood about a process ...