Open Science Harvester of NAS of Ukraine

Aspects of financial analysis of the company's equity in modern conditions

by Kuprina, N., Markova, T., Velychko, O.
Published 2021

Bose-Einstein condensation and/or modulation of "displacements" in the two-state Bose-Hubbard model

by Stasyuk, I.V., Velychko, O.V.
Published in Condensed Matter Physics (2018)

Two-state Bose-Hubbard model in the hard-core boson limit

by Stasyuk, I.V., Velychko, O.V.
Published in Condensed Matter Physics (2011)

New type phase transitions in the Mitsui model with bimodal random field

by Stasyuk, I.V., Velychko, O.V.
Published in Condensed Matter Physics (1999)

Gaussian fluctuations of polarization in the region of phase transitions in DMAGaS-DMAAlS ferroelectrics in the framework of the four-state model

by Stasyuk, I.V., Velychko, O.V.
Published in Condensed Matter Physics (2004)

The two-state Bose-Hubbard model in the hard-core boson limit: Non-ergodicity and the Bose-Einstein condensation

by Stasyuk, I.V., Velychko, O.V.
Published in Condensed Matter Physics (2012)

Phase separation in lithium intercalated anatase: A theory

by Velychko, O.V., Stasyuk, I.V.
Published in Condensed Matter Physics (2009)

Proton ordering model of phase transitions in hydrogen bonded ferrielectric type systems: the GPI crystal

by Stasyuk, I., Czapla, Z., Dacko, S., Velychko, O.
Published in Condensed Matter Physics (2003)

Phonon-like excitations in the two-state Bose-Hubbard model

by Stasyuk, I.V., Velychko, O.V., Vorobyov, O.
Published in Condensed Matter Physics (2015)

Сучасні аспекти методики аналізу оборотних активів в системі управління підприємством

by Kuprina, N., Velychko, O., Stupnytska, T., Baraniuk, Kh., Volodina, O.
Published 2023

Electret effect in intercalated crystals of the A³B⁶ group

by Grygorchak, I., Voitovych, S., Stasyuk, I, Velychko, O., Menchyshyn, O.
Published in Condensed Matter Physics (2007)

Дослiдження бозонного спектра двовимiрних оптичних ґраток зi структурою типу графену. Надплинна фаза...

by Stasyuk, I. V., Velychko, O. V., Dulepa, I. R.
Published 2018

Дослiдження бозонного спектра двовимiрних оптичних ґраток зi структурою типу графену. Нормальна фаза...

by Stasyuk, I. V., Dulepa, I. R., Velychko, O. V.
Published 2018

Thermodynamics and dielectric anomalies of DMAAS and DMAGaS crystals in the region of phase transitions (Landau theory approach)

by Stasyuk, I.V., Velychko, O.V., Czapla, Z., Czukwinski, R.
Published in Condensed Matter Physics (2000)

Model description of the H–bonded transuranium complexes

by Stasyuk, I.V., Ivankiv, O.L., Velychko, O.V., Holubets, T.V.
Published in Condensed Matter Physics (1999)