Acta et Commentationes Exact and Natural Sciences

Current Issue

Vol 2 No 16 (2023)
Published December 20, 2023
Acta et Commentationes Exact and Natural Sciences

The Acta et Commentationes scientific journal, the Exact and Natural Sciences series is a periodical publication, whose purpose is to reflect and develop the modern scientific phenomenon in the field of Exact and Natural Sciences (Mathematics,  Chemistry and Biology); dissemination of the results of the scientific performance researches (fundamental and applicative) in the fields of profile; publicizing new technologies in order to implement them; addressing and elucidating the scientific investigative problems specific to the journal profiles.

The journal is included in the Register of Scientific Journals of the Republic of Moldova in category B and can be accessed at https://ibn.idsi.md/ro/vizualizare_revista/418. The e-mail address of the journal is aec@ust.md

Full Issue
Full Issue
Dumitru Cozma, Mihail Popa
7-12
Professor Alexandru Șubă on his 70th birthday
https://doi.org/10.36120/2587-3644.v2i16.7-12
pdf
Yaroslav Bihun, Ihor Skutar
13-24
Averaging in multifrequency systems with multi-point conditions and a delay
https://doi.org/10.36120/2587-3644.v2i16.13-24
pdf
Alexandru Șubă, Olga Vacaraș
25-34
Quartic differential systems with a non-degenerate monodromic critical point and multiple line at infinity
https://doi.org/10.36120/2587-3644.v2i16.25-34
pdf
Vasile Neagu, Diana Bîclea
35-50
Perturbation of singular integral operators with piecewise continuous coefficients
https://doi.org/10.36120/2587-3644.v2i16.35-50
pdf
Alexadra Tkacenko
51-65
The method for solving the multi-criteria linear-fractional optimization problem in integers
https://doi.org/10.36120/2587-3644.v2i16.51-65
pdf
Natalia Neagu, Mihail Popa
66-77
On stability of some examples of ternary differential critical systems with quadratic nonlinearities
https://doi.org/10.36120/2587-3644.v2i16.66-77
pdf
Dumitru Moraru
78-88
Tuning method of automatic controllers to object models with second order advance-delay and dead time
https://doi.org/10.36120/2587-3644.v2i16.78-88
pdf
Laurențiu Calmuțchi
89-96
Generalized Hausdorff compactifications
https://doi.org/10.36120/2587-3644.v2i16.89-96
pdf
Dumitru Cozma
97-105
First integrals in a cubic differential system with one invariant straight line and one invariant cubic
https://doi.org/10.36120/2587-3644.v2i16.97-105
pdf
Victor Shcherbacov, Irina Radilova, Petr Radilov
106-110
T-quasigroups with Stein 2-nd and 3-rd identity
https://doi.org/10.36120/2587-3644.v2i16.106-110
pdf
Vadim Repeșco
111-117
Qualitative analysis of polynomial differential systems with the line at infinity of maximal multiplicity: exploring linear, quadratic, cubic, quartic, and quintic cases
https://doi.org/10.36120/2587-3644.v2i16.111-117
pdf
Inga Titchiev, Olesea Caftanatov, Dan Talambuta
118-127
Discovering the mysteries of Pi number using AR technologies
https://doi.org/10.36120/2587-3644.v2i16.118-127
pdf
Liubomir Chiriac, Natalia Lupashco, Maria Pavel
128-142
Application of genetic algorithm to solving the optimization problem of locations graph vertices in the line
https://doi.org/10.36120/2587-3644.v2i16.128-142
pdf
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