ISSN 2673-494X
Two-page Reports on Science

Cuban Sci. 2021, Vol. 2, Issue 2

Natural Sciences (4 reports)

Cuban Sci. 2021, 2(2): 1–2
Marilyn Bello, Gonzalo Nápoles, Koen Vanhoof, Rafael Bello
Published on 13 Sep 2021 PDF (167K)
“This work introduces a new neural network architecture that uses bidirectional associations-based pooling to extract high-level features and labels from multi-label data. Unlike the pooling approaches reported in the literature, our proposal does not require input data to have any topological properties as typically occurs with images and videos. The numerical results show that our bidirectional pooling helps reduce the number of problem features and labels while preserving the discriminatory power of the network.”
Cuban Sci. 2021, 2(2): 3–4
A. Quintana-Nedelcos
Published on 12 Oct 2021 PDF (363K)
“This work focuses on the collaborative behavior of strong ferromagnetic FeCr nanoparticles embedded in a AlNiCo weak magnetic matrix.”
Cuban Sci. 2021, 2(2): 5–6
Leonardo Concepción, Gonzalo Nápoles, Rafael Bello, Koen Vanhoof
Published on 12 Oct 2021 PDF (333K)
“We proposed definitions and theorems regarding Fuzzy Cognitive Maps (FCMs), which allow estimating bounds for the activation value of each neuron and analyzing the covering and proximity of feasible activation spaces. The main theoretical findings suggest that the state space of any FCM model equipped with transfer F-functions shrinks infinitely with no guarantee for the FCM to converge to a fixed point but to its limit state space. This result, in conjunction with the covering and proximity values of FCM-based models, helps to understand their poor performance when solving complex simulation problems.”
Cuban Sci. 2021, 2(2): 7–8
Gonzalo Nápoles, Agnieszka Jastrzebska, Carlos Mosquera, Koen Vanhoof, Władysław Homenda
Published on 5 Nov 2021 PDF (144K)
“We have proposed a hybrid Fuzzy Cognitive Map-based model that incorporates static expert knowledge and information automatically inferred from the data. The paper introduces a fast and deterministic algorithm to construct such a model and a post-optimization procedure to fine-tune the resulting architecture. Simulations showed the superiority of our proposal in problems devoted to modeling complex systems.”

Cuban Sci. 2020, Vol. 1, Issue 1

Natural Sciences (7 reports)

Cuban Sci. 2020, 1(1): 1–2
Sandy Sanchez
Published on 20 Apr 2020 PDF (288K)
“We describe FIRA, a new method to manufacture solar cells. Its main advantages are its quick implementation and the high-efficiency of the resulting devices.”
Cuban Sci. 2020, 1(1): 3–4
Rogelio Díaz-Méndez
Published on 20 Apr 2020 PDF (537K)
“The Event-Driven Monte Carlo algorithm is introduced. It applies to problems with discrete degrees of freedom accurately finding the temporal evolution at all time scales.”
Keywords: Monte Carlo
Cuban Sci. 2020, 1(1): 9–10
Ramon E. R. Gonzalez
Published on 26 Apr 2020 PDF (477K)
“We propose a time-based analogy between the thermodynamic behavior of a three-level energy system and the progression of HIV infection described by the evolution of the cell population.”
Cuban Sci. 2020, 1(1): 13–14
Anthuan Ferino-Péreza, Juan José Gamboa-Carballo, Ulises Jáuregui Haza
Published on 10 May 2020 PDF (797K)
“The molecular inclusion process of two organochlorine pesticides and its radiolabeled analogous with cyclodextrines is a perspective technology for the removal of these pollutants from water.”
Cuban Sci. 2020, 1(1): 19–20
Marcelo Marcet-Palacios
Published on 22 May 2020 PDF (942K)
“The structure of the HIV matrix shell has not been fully elucidated. In this article, I highlight contributions that led to a model composed of adjacent hexagons forming a sphere and mentioned studies that were subsequently impacted. A cross-disciplinary group of students in my lab tested this hypothesis and conclusively demonstrated that this model was incorrect. I provide a summary of our results with emphasis placed on contributions made by students.”
Cuban Sci. 2020, 1(1): 21–22
Kenia Melchor Rodrı́guez, Juan José Gamboa Carballo, Anthuan Ferino Pérez, Nady Passe-Coutrin, Sarra Gaspard, Ulises Jáuregui Haza
Published on 16 Jun 2020 PDF (368K)
“We use computational chemistry tools for describing chlordecone interactions with acidic surface groups onto activated carbons (AC), for understanding the adsorption process of pesticide on AC.”
Cuban Sci. 2020, 1(1): 27–28
Alexander Odriazola
Published on 30 Jun 2020 PDF (271K)
“We investigate yet another direct link between linear algebra and electronic structure theory by exploring the usefulness of the Gershgorin theorem in the estimation of the correlation energies of many-particle systems.”

Cuban Sci. 2020, Vol. 1, Issue 2

Natural Sciences (2 reports)

Cuban Sci. 2020, 1(2): 1–2
Drialys Cardenas-Morcoso
Published on 7 Oct 2020 PDF (332K)
“The meaning of negative IMPS transfer function values was experimentally demonstrated, providing a powerful opto-electronic method toward specific operational mechanisms insights in photoelectrochemical systems.”
Cuban Sci. 2020, 1(2): 3–4
Danny Martínez Pedrera
Published on 17 Oct 2020 PDF (258K)
“We briefly discuss SU(2)-structure 6-manifolds, their role in the compactification of the heterotic string and the resulting gauged supergravity at low energies.”