Agricultural University of Havana

Discriminating information on the Internet and making academic research visible is a challenge. In a data-saturated digital environment, researchers navigate through large amounts of information to find the most relevant and reliable results. To identify new research, search engine algorithms and social platforms prioritize certain content over others, making it difficult for academic research to reach its audience. The objective of this research is to quantitatively analyze the visibility of the research of the universities of Honduras, based on the classification of the Web Ranking of Universities (Webometrics) during the years 2022 to 2024 through the technique of documentary and information analysis. Of the 21 Honduran universities, 16 have been classified, UNAH, EAP and UNITEC have occupied the first three positions at the national level in that period, maintaining the same positions in the Impact, Openness and Excellence indicators. The centralization of the websites of each of the university departments is suggested, the continuous updating of the web pages, review of the quality of the links and improvement in the communication and dissemination of research results.

The theory underlying non-linear dynamical systems remains essential for understanding complex behaviors in science and engineering. In this study, we propose a new chaotic dynamical system that exhibits a butterfly-shaped attractor without any equilibrium point. Despite its compact structure comprising only five terms, the system demonstrates rich chaotic behavior distinct from conventional oscillator models. Detailed modeling and dynamical analyses are conducted to confirm the presence of chaos and to characterize the system's sensitivity to initial conditions. Furthermore, synchronization of the proposed dynamical system is investigated using both identical and non-identical control algorithms. In the identical case, the activation function of the neural network is governed by the butterfly oscillator dynamics, whereas in the non-identical case, a sigmoidal activation function is employed. The proposed synchronization algorithms enable faster convergence by pinning a subset of nodes in the network. Finally, a practical implementation of the conceived dynamical system in an encryption framework is presented, with the aim to demonstrate its feasibility and potential application in secure communication systems. The results highlight the effectiveness of the proposed approach for both theoretical exploration and engineering applications involving chaotic dynamical systems.

We here report of a conference about “Pesticides in Soil, Groundwater and Food in Latin America as part of One Health” that took place at the “IV Seminario Internacional de Sanidad Agropecuaria (SISA)” in Varadero, Cuba, 8–12 May 2023. Researchers of Latin America (Argentina, Brazil, Chile, Costa Rica, Colombia, Cuba, Mexico) and Switzerland (workshop initiator) held presentations about occurrence and effects of pesticides on the environment, human health, the replacement of highly hazardous pesticides (HHP) by agroecological alternatives and the agri-food value chain. In a subsequent round table discussion, the presenters identified deficits, needs, interests and opportunities. According to them, the lack of awareness of pesticide use affects the health and safety of workers applying the chemicals. Despite Latin America representing the main agricultural area in the world with a very intense pesticide use, monitoring data of pesticides in soil, surface and groundwaters, food, as well as in humans are missing. Risks of pesticides to humans should be assessed so that authorities can withdraw or limit within “short time” the access to corresponding formulations on the market. Also, communication is not state of the art and should be improved as, e.g. the teaching of workers and farmers, how to correctly use and apply pesticides or the briefing of decision makers. Pollinators suffer from multiple stressors not the least due to pesticides, and alternatives are badly needed. On the technical side, the different analytical methods to determine residues of active ingredients and transformation products in matrices of concern should be harmonized among laboratories. Seven future actions and goals were identified to overcome the above deficits. Next steps after the publishing of this conference report are to harmonize and complete the information status of the presenters by exchanging the results/data already present. Therefore, a platform of interaction to address issues described above and to enhance collaboration shall be created. Samples of different matrices shall be exchanged to harmonize the chemical analysis and establish interlaboratory comparisons. Such activities might be facilitated by joining international associations or organizations, where researchers can offer their expertise, or by forming a new pesticide network for Central and South America that could present tailored projects to national and international organizations and funding agencies.

Este artículo responde al tema: la educación del talento académico, desde el contexto familiar. Constituye resultado de investigación del Proyecto La educación del talento académico de Mayabeque. Tiene como objetivo fundamentar la educación del talento académico desde el contexto familiar. Para dar seguimiento a este propósito, se recurrió al método general dialéctico-materialista y a los métodos del nivel teórico: histórico y lógico; análisis y síntesis; inducción y deducción y el enfoque de sistema. La fundamentación permitió la construcción de argumentos que demostraron que es posible apoyar el proceso de la educación del talento académico desde el contexto familiar.