bluuebunny/crossref_metadata_2025 huggingface dataset:
The impact of the Russian-Ukrainian War on the food security of the Kingdom of Saudi Arabia
Authors: Ghanem Adel M. , Alrwis Khalid N. , Alnashwan Othman S. , Alduwais Abdul Aziz M. , Alaagib Sharafeldin B.
Published: October 2024

The economic and social impact of the Russian-Ukrainian war was the focus of this study, which aimed to assess its effect on the food security of the Kingdom of Saudi Arabia. To achieve its objectives, the study utilized published data, food security index measures, and standard economic analysis. The findings revealed that the Kingdom's food security environment index increased from 58.1% in 2012 to 69.9% in 2022, indicating moderate food security throughout this period. The index was lower than the estimated counterpart for the rest of the Gulf Cooperation Council countries but exceeded the global average (113 countries) by 12.38% in 2022. Furthermore, the study demonstrated that a 10% increase in the estimated food production index and real per capita income led to a 2.72% and 6.55% increase in the food security index, respectively. Conversely, a 10% rise in the estimated consumer price index for foodstuffs resulted in a 1.74% decrease in the food security index. Despite the challenges posed by the Russian-Ukrainian war, the food security index is projected to improve for the Kingdom of Saudi Arabia, expected to increase from 72.4% in 2024 to 75.6% in 2030, attributed to the country's policy of investing in agriculture abroad and focusing on local agricultural investments such as vertical expansion, protected agriculture, and agricultural practices. This strategic approach ensures high-quality produce and facilitates significant financial surpluses, enhancing the country's capacity to import goods from overseas.
Image processing algorithm in the spatial navigation system for the visually impaired
Authors: Palogiannidis D.
Published: October 2024

The algorithm for processing the image generated by the webcam of the spatial navigation system for the blind and visually impaired is proposed. Image processing includes selecting and identifying objects located in four sectors of the frame, shifting the center of the frame to the selected objects and determining the angular coordinates of the objects' location, forming an indication for turning the user's head towards the selected objects, measuring the distance to the object using LiDar, highlighting foreground objects, determining the speed of its movement and ensuring safe navigation visually impaired in accordance with the information voiced by the speech synthesizer. The proposed image processing algorithm is designed to form information support for the blind and visually impaired in spatial navigation systems.
Long-term monitoring system for pressure in extrahepatic bile ducts with automatic regulation
Authors: Shevchenko Yu.A. , Semenova E.A. , Sigua B.V.
Published: October 2024

Currently, an urgent and unresolved problem is the automation of pressure monitoring in the extrahepatic bile ducts in the postoperative period. Obstruction of the bile ducts associated with narrowing or obstruction of the bile ducts leads to the development of life-threatening conditions such as bile peritonitis and subhepatic abscess. A system is described that allows for the automation of pressure monitoring in the extrahepatic bile ducts.
Cardiac workload study in patients with hypertrophic cardiomyopathy
Authors: Gazizova D.Sh. , Berseneva M.I. , Ivleva O.V. , Malenkov D.A. , Sazykina L.V.
Published: October 2024

The relevance of studying the heart load is determined by the need to assess its reserves at different degrees of heart failure for further selection of treatment tactics. The aim of the work is to evaluate the influence of pressure and cardiac output changes on the left and right ventricular workload in patients with hypertrophic obstructive cardiomyopathy. The haemodynamic data of 69 patients divided into two subgroups according to the value of cardiac index greater and less than the mean value were considered. It was found that the change in the left ventricular power of the heart of patients with hypertrophic obstructive cardiomyopathy is determined by the change in both cardiac index and blood pressure. In better-off patients with high cardiac index, the effect of blood pressure is higher and cardiac output is lower. In severe patients with a low cardiac index, the influence of blood pressure is reduced and cardiac index is increased. The formation of right ventricular power, both in patients with high cardiac index and low, is not affected by changes in cardiac output. Changes in the right ventricular power index are determined by variations in pulmonary artery pressure to a greater extent in well patients and to a lesser extent in severe patients. Since there are 23.1% variations in cardiac index and 60% variations in pulmonary arterial pressure, it is assumed that there is a regulatory mechanism that changes cardiac output opposite to pulmonary artery pressure fluctuations. Comparison of left and right ventricular power indices with the data given in the literature showed that both for all examined patients with hypertrophic obstructive cardiomyopathy and divided into groups, the average values of left and right ventricular power indices correspond to the range of power fluctuations in healthy people at rest. The range of left ventricular power index variation by 3.5 times, and right ventricular power index variation by 10 times in patients with hypertrophic obstructive cardiomyopathy is determined by multifunctional relationships of cardiovascular system function indices (pressures and cardiac output), which determines the necessity of personalised therapy selection, taking into account the mechanisms of their formation. The results obtained during the study of the effect of changes in pressure and cardiac index on the power developed by the left and right parts of the heart must be taken into account when choosing therapy in patients with hypertrophic obstructive cardiomyopathy. Practical significance. The results will be used in the choice of treatment in order to optimize the load on the heart in patients with hypertrophic obstructive cardiomyopathy.
Algorithm for ocean surface pollution detection based on the results of video surveillance image processing
Authors: Vasilieva D.V.
Published: October 2024

The problems of timely detection of environmental disturbances caused by the consequences of various man-made disasters on land and on the water surface of water areas of seas and oceans are based on imperfect methods of control and monitoring of large spaces. Therefore, it is relevant to search for approaches for learning procedures used in the construction of monitoring systems. The aim of article to consider approaches to the formation of feature spaces based on the processing of multiple-scale distributions of signals from drone cameras and the application of discrete series of continuous-time wavelets. An approach to the formalization of the recognition task is proposed. The results of using discrete series of continuous-time wavelets are presented, which allows obtaining a result similar to the use of a multi-dimensional filter bank loaded on integrators. Results of a practical experiment are presented, which showed that increasing the dimensionality of feature vectors reduces their contrast. The directions of further research are formed. The presented results open new possibilities for realization of recognition systems at the software level.
Complexation of correlation-extreme navigation systems
Authors: Sauta O.I. , Vinogradova E.P.
Published: October 2024

The constantly increasing intensity of air traffic, due to the growth in the number of manned and unmanned aerial vehicles, as well as the increasingly frequent disruptions of radio navigation systems in recent years, require the development of new methods for increasing the accuracy and continuity of navigation support for flights. The use of correlation-extreme navigation systems (CENS), using digital terrain matrices (DEM) of the earth's surface, makes it possible to solve navigation problems when flying over many types of terrain. However, in the case of a multi-extreme correlation dependence, the problem of ambiguity in determining the location of the aircraft arises, which reduces the accuracy and continuity of the data generated by such a CENS. The aim of article to develop a method for integrating of airborne CENSs using DEM and optical images of the earth's surface to improve the accuracy and continuity of navigation determinations. A method has been developed for integrating CENS, built on the use of DEM and digital devices for the formation and processing of optical images, and allowing to increase the accuracy of classical correlation-extremal methods in the conditions of the emergence of multi-extremal correlation dependence. The paper examines the possibility of using digital devices for forming and processing images as part of the on-board equipment of an aircraft as a means of clarifying its current location when solving autonomous navigation problems, in particular, to correct deviations of the flight path of the aircraft from a given course.
Influence of the parameters of the aquatic environment on the functioning of wireless channels optical underwater communication in information and measurement systems
Authors: Kurkova O.P. , Kazakov V.I. , Serdiuk K.V.
Published: October 2024

The main challenge in creating underwater Internet of Things (UIoT) applications is to select the appropriate type of communication system, which must take into account the unique conditions of the underwater environment and data transmission requirements. Unlike terrestrial systems, where RF channels are widely used, underwater conditions require other solutions, as radio waves are significantly attenuated in the water, severely limiting the transmission range. A specific and little-studied aspect of underwater communications is the use of Underwater Wireless Optical Communications (UWOC). This paper focuses on investigating the effect of the characteristics of the aquatic environment on UWOC performance. The purpose of the study was to identify the relationship between the parameters of the aquatic environment and the UWOC channel in the interest of predicting the effectiveness of its application as part of UIoT networks, to substantiate the feasibility and prospects of using underwater optical wireless communications as part of distributed information and measurement systems. The paper presents the results of research on the relationship between the parameters of the aquatic environment and the underwater optical wireless communication channel. The interrelation of optical characteristics of the aquatic environment with the indicators of efficiency and quality of underwater optical wireless communication: normalised power, communication range, bit error rate, in turn, affecting the accuracy and reliability of the information received by the Consumer at the output of the information-measuring system. The influence of water medium turbulence on the communication indicators is assessed. It is shown that changes in the salinity of the aquatic environment as one of the factors causing turbulence negatively affects the main indicators of underwater optical wireless communication. It is shown that the assessment of the feasibility of underwater optical wireless communication should be made on the basis of a detailed analysis of the parameters of the aquatic environment of the water area in which its implementation is planned. The obtained results confirm the possibility and perspectivity of using underwater optical wireless communication as a part of distributed information-measuring systems on underwater objects located in different types of water areas.
Consideration of the influence of aberrations in the operation diffraction prism spectral device
Authors: A.N. Yakimov O.P. ч , Serdiuk K.V. , Yakimov A.N.
Published: October 2024

Spectral analysis is one of the most important methods of physico-technical research for solving many scientific and practical problems. The key parameter of a spectral instrument is its resolving power. Instruments based on diffraction gratings face a fundamental limitation: their resolving power is limited to operation in the first two orders of diffraction. The limitation is due to the fact that the intensity of diffraction maxima drops sharply with increasing diffraction order. As a result, such devices are unable to distinguish closely spaced spectral lines. Increasing the resolving power of spectral priors is an important and urgent task for spectroscopy. The aim of the research was to develop an optical scheme of a spectral instrument based on a high-resolution prism for the detection of nearby spectral lines with minimal influence of aberrations. The optical scheme of the diffraction prism spectral instrument was developed. The possibility of detecting nearby spectral lines is shown. Also a comprehensive study of the influence of aberrations and the development of methods of their minimisation to achieve the optimum quality of the spectral instrument and accuracy of measurements is carried out. The obtained results confirm the possibility of increasing the resolving power of the spectral instrument for the detection of closely spaced spectral lines. Taking into account the influence of aberrations in the diffraction prism spectral instrument will improve the quality of its work and measurement accuracy. The obtained results open new possibilities for studying complex spectra with high detail.
Modern standards of unified system of design and software documentation as a vector of the main trends in the development of machine-readable documents
Authors: Epifantsev K.V. , Frolova E.A.
Published: October 2024

In order to organize interaction between different departments of a production unit, it is necessary to create elaborated standards in the field of electronic document protection. From the point of view of the standardization process, the documentation maintenance department faces the problem of translating a file into an electronic document, which must have a number of identifying requisites. This point is very vulnerable both in terms of originality, since not every company has the ability to use EDS, GOST allows a number of alternatives. At present, in the period of import substitution, the growth of documents in the field of design documentation will increase, and therefore, it is necessary to increase the number of quality standards in the field of electronic documents, which will facilitate a traceable structure of changes in the design document and the addition of the drawing and specification of the part. Thus, by schematically explaining all the steps of this process, the problem can be solved. The paper applies elements of analysis of catologization systems, electronic document management systems, research on the use of requisite part and electronic forms in electronic documentation. Using the output from the 2023 and 2024 standards in the area of electronic document management, it is necessary to identify the critical points of the process of converting a drawing or specification file into an electronic document. It is also necessary to consider the 2023-2024 standards, which are aimed at a system to improve the process of mutual exchange of drawings, schematics, electronic models between enterprises of different profiles. It is also necessary to present the algorithm of adaptation of design documentation made in different formats to the perception in different document management systems and adequate implementation in the system of catologization. Conclusions are made on the most relevant GOSTs, critical points of GOSTs are indicated, which contribute to the facilitation of understanding of this process between organizations and simplification of the order of conversion of USCD systems from different formats into a unified system of electronic catalog. This process is important from the point of view of unification of models on the one hand, on the other hand - more qualitatively contributes to the process of import substitution, when a number of design documentation must be unloaded from foreign sources and convert them into CAD of domestic development. The information available in the article can be used by designers, technologists, norm-checkers to create standards within the enterprise on norms and rules of work with electronic design documents, as well as for the transfer of documents from the file system to the electronic document management system.
Autopoiesis in Decentralized Autonomous Organizations as Complex Systems: A Comparative Analysis and Case Studies
Authors:   Department of Mathematics, Computer Science and Physics, University of Udine, Udine, Italy, Santoro Francesco
Published: October 2024

This article explores the concept of autopoiesis and its application to Decentralized Autonomous Organizations (DAOs). Autopoiesis describes the self-producing and self-maintaining characteristics of living systems, a concept that has been applied in various fields beyond biology. DAOs, operating on blockchain technology, exhibit a level of autonomy, transparency, and democratic governance. They are self-governing and self-sustaining systems that operate based on coded rules and protocols. The article suggests that DAOs align with the concept of autopoiesis, making them a specific type of complex system. Diverse case studies demonstrate the resilience and autopoietic features of these organizations. All things considered, the concept of autopoiesis could provide a valuable lens for understanding DAOs.
Diet and metabolic influences on skin aging and diseases: Ayurvedic prospectives
Authors: Panda Ashok Kumar , Kar Sarbeswar
Published: October 2024

Skin aging and disorders are related to environmental factors, genetic makeup, nutrition, and other factors, but Ayurveda emphasized the dietary etiologies for all types of skin disorders and skin aging. The concept of Jara(aging) is entirely dependent on the Prana(life energy force for circulation and respiration) supported by ojus and tejos. The digestive power (Agni) is very vital for skin disorders and aging. Undigested food residue(Ama) influences the occurrence of diseases in the body; like that, it influences skin aging and skin disorders. The particular rasa(taste dominant), dietary items, and dieting procedure for genesis skin disorders are described. Food items included or avoided in a diet for a particular skin condition are also narrated. There is a positive correlation between diet and metabolism in skin aging and disorders. Therefore, fruit and vegetable consumption, along with other polyphenols containing food items, exercise, and pranayama may represent the healthiest and safe method in order to maintain youthful skin and can prevent skin disorders aging.
BIDeconomics República Dominicana: panorama de oportunidades
Authors: Brito Steve , López Juan Carlos , Gómez Osorio Andrés
Published: October 2024

Este BIDeconomics, que plantea un mapa de oportunidades con recomendaciones accionables basadas en las mejores prácticas internacionales, es una contribución que hacemos a partir del conocimiento y la experiencia del Grupo BID, en búsqueda de un desarrollo más inclusivo y sostenible para la población dominicana.
La política contra la obesidad en los medios de comunicación: análisis desde el principio de responsabilidad
Authors: Jácome-Sánchez Brenda , Ramos-Viesca Mariblanca
Published: October 2024

Propósito/Contexto. Analizar desde la información pública disponible en medios de comunicación digital del período 2012-2018 en México, los mensajes en discursos del gobierno, la industria y la sociedad informada que afectaron el funcionamiento de la política de promoción de la salud contra la obesidad y las implicaciones bioéticas que pudieron manifestarse, a la luz del principio de responsabilidad.
Metodología/Enfoque. Análisis cualitativo, bioético y hermenéutico donde se incluyeron publicaciones en medios de comunicación digital sobre la obesidad en el período 2012-2018 y que vinculaban la Estrategia Nacional para la Prevención y el Control del Sobrepeso, Obesidad y Diabetes (ENPCSOD) en México, procedentes del discurso del gobierno, industrias como la alimentaria, refresquera y de moda, así como de la sociedad informada que conforman academias y organizaciones civiles.
Resultados/Hallazgos. El discurso de la política de salud 2012-2018 mostró desinterés en el desarrollo de la promoción como herramienta eficaz para la salud pública; incongruencia entre las acciones y los objetivos, un discurso de miedo y advertencia, lo que finalmente se vislumbra como incumplimiento de la responsabilidad ética.
Discusión/Conclusiones/Contribuciones. La obesidad es un problema de salud mediatizado, cuya transformación de valores y percepción de realidades vuelve impostergable la discusión bioética sobre la intervención de los medios de comunicación como agentes morales. Su alcance, aún desconocido, merece un abordaje transdisciplinario que permita equilibrar, desde las políticas públicas, derechos, obligaciones y responsabilidades.
Narrar la vida, la enfermedad y la muerte: ética del cuidado y Bioética narrativa a partir de Paula de Isabel Allende
Authors: Cruz Ocaña Luis Ernesto
Published: October 2024

Propósito/Contexto. El artículo presenta un análisis hermenéutico y reflexivo de Paula, novela autobiográfica publicada por Isabel Allende en 1994. El propósito es indagar sobre la manera en que los relatos son útiles en la configuración, individual y colectiva, del sentido de la vida y la muerte, e identificar los elementos que aporta hacia la construcción de una ética del cuidado y una bioética narrativa, útiles para el contexto actual.
Metodología/Enfoque. El análisis se realizó en tres etapas: 1) revisión de documentos con perspectiva fundamentalmente filosófica; 2) lectura analítica e interpretativa de la novela para ofrecer una visión general y una estrategia de articulación de temas con la literatura revisada; y 3) interpretación a la luz de los debates y conflictos propios de la bioética contemporánea.
Resultados/Hallazgos. Los resultados muestran la importancia de la narración y los relatos para dotar de sentido y coherencia a la propia vida, contar críticamente y reconstruir lo cotidiano en contextos de convivencia con la enfermedad, así como propiciar procesos reflexivos de cara a situaciones-límite como la muerte.
Discusión/Conclusiones/Contribuciones. Las conclusiones señalan en qué medida existen en la novela, aunque de manera germinal, vetas para la instauración de una ética del cuidado y una bioética narrativa.
Hacia una comprensión de las territorialidades bioéticas
Authors: López Neira Jhonatan
Published: October 2024

Propósito/Contexto. Se llevó a cabo una reflexión teórica sobre las condiciones de la hermenéutica bioética del espacio y la configuración de territorialidades, con el fin de resaltar el modo en que las acciones humanas, mediante la ciencia y la tecnología, recrean dinámicas vitales que transforman las diversas formas de apropiación del espacio y establecen relaciones con otras formas de vida.
Metodología/Enfoque. La metodología implementada consistió en la revisión de literatura disponible en bases de datos, tomando como sintaxis de búsqueda las categorías de: territorio, espacio, bioética, territorialidades, geografía, territorio y bioéticas latinoamericanas. Dichas categorías fueron integradas a partir del uso de códigos booleanos así como de la implementación de algunos parámetros de lenguaje controlado. Los resultados obtenidos se filtraron a partir de la pertinencia del contenido y se implementaron como apoyo al desarrollo de la propuesta hermenéutica. Al final del proceso de selección de la información, se llevó a cabo la estructuración de modelos axiales teóricos y a partir de estos se configuró la propuesta conceptual.
Resultados/Hallazgos. Hablar del territorio desde una aproximación bioética social es un reto en la actualidad puesto que la Bioética aún presenta un volumen mayor en su producción académica en torno a temas de salud. No obstante, es importante buscar modos en que el paradigma bioético cree nuevas rutas hermenéuticas y ponga de relieve cartografías territoriales bioéticas que permitan evidenciar cómo la tecnociencia se funge a la luz de los lugares en donde se crea, se aplica y transforma las diversas formas de vida.
Discusión/Conclusiones/Contribuciones. Las territorialidades bioéticas pueden contribuir a la sistematización de formas distintas de habitar un lugar bajo las premisas del respeto y el cuidado de la vida, así que crear una ruta metodológica hermenéutica que permita cartografiar el territorio resulta clave para ampliar el debate sobre el impacto que logra la implementación y el desarrollo de la tecnociencia en los espacios vitales que la humanidad cohabita con otros organismos.
Bioética en la educación odontológica latinoamericana: revisión de la literatura
Authors: Revelo Motta Grace Elizabeth
Published: October 2024

Propósito/Contexto: se realizó una revisión de la literatura sobre la Bioética en la educación odontológica en América Latina, con el fin conocer su representación en este contexto.
Metodología/Enfoque: se llevó a cabo la revisión de la literatura disponible en bases de datos, donde los términos de búsqueda fueron: “bioética”, “educación en odontología” y “bioética y educación odontológica” y se incluyeron: artículos de investigación, artículos de reflexión, artículos de revisión, tesis y libros publicados en idiomas español, inglés y portugués de autores latinoamericanos. Además, la información se agrupó por temáticas en categorías conceptuales.
Resultados/Hallazgos: los resultados evidencian que los principales ejes temáticos son la fundamentación bioética de la educación en Odontología, el proceso de enseñanza/aprendizaje de la Bioética en la educación en Odontología y los conocimientos y actitudes de docentes y estudiantes de Odontología sobre Bioética.
Discusión/Conclusiones/Contribuciones: la teoría y la práctica de la Bioética en la educación odontológica se basan en el principialismo y presentan rasgos deontológicos. La formación en Bioética durante todas las etapas de la carrera es fundamental para que los estudiantes identifiquen los conflictos éticos de la práctica clínica y reflexionen en la búsqueda de soluciones prudentes.
A tanulói beszéd fatikus funkciójú nyelvi elemei az osztálytermi diskurzusban
Authors: Asztalos Anikó
Published: October 2024

A tanulmány témája a fatikus funkciójú nyelvi elemek vizsgálata a tanulói beszédben. A fatikus funkció a nyelv elsődleges funkciójaként az osztálytermi diskurzusban támogatja a tanár és a diákok közötti kapcsolat létrehozását, fenntartását és lezárását, tükrözi az interperszonális kapcsolat jellegét. A bemutatott kutatás célja a tanulók beszédfordulóiban megjelenő verbális fatikus funkciójú elemek típusainak a megfigyelése. A tanulmány 12 magyar nyelvi tanóra videós anyagának annotálása és szegmentálása alapján mutatja be az osztálytermi diskurzus jellemzőit, emellett differenciálja a fatikus funkciójú nyelvi elemek fajtáit a tanulók beszédében. A nyelvi példák alátámasztják, hogy diákok csak korlátozottan veszik fel a kapcsolatot a tanárral és egymással is, valamint a fatikus funkciójú nyelvi elemek megjelenésében több olyan jellemző van, amely a tanulói beszéd sajátosságaihoz sorolható. Az osztálytermi diskurzus működésének feltárásával a kezdő és a gyakorló pedagógusok is jobban felismerhetik azt, hogy milyen hatást gyakorolnak a saját beszédükkel a tanulók beszédére.
Megjegyzések a hvárezmiek neveihez a középkori Eurázsiában : A magyar káliz szó és ami körülötte van
Authors: Senga Toru
Published: October 2024

Hvárezm és a hvárezmiek jelölésére szolgáló nevek között volt valaha egy *χwālis névforma, amely egy bizonyos iráni nyelvet beszélők körében volt használatban, és legkésőbb a 6. század közepétől mutatható ki. A török ajkúak – többek között a kazárok és a besenyők – ezt a szóalakot a mássalhangzó-torlódás feloldásával *qālïs alakban adaptálták, emellett egy *quwālïs variáns is keletkezhetett. A 9. században a magyarul beszélők, akik Kazária szomszédságában éltek, átvették a *qālïs szót, mégpedig a káli̮s/kȧli̮s (˃ káliz) hangalakban, amely egy 1111. évi oklevélben a caliz betűképpel van rögzítve. A kazárokkal, illetve a besenyőkkel kapcsolatban az arab írók által említett ḫaliṣ, illetve a ḫuwāliṣ, valamint a bizánci forrásokban előforduló Χαλίσ(ιοι), illetve Χουάληϛ a tör. qālïs-nak, illetve *quwālïs-nak felel meg. A keleti szláv nyelv a *χwālis névformát vette át, amiből a Хвалис alak keletkezett. Az elnevezés nem magát Hvarezmet, hanem elsősorban a Kaszpi-tenger északi partjain letelepedett hvarezmieket jelölte. A hvarezmiek tevékenységei – főként a távolsági kereskedelem területén – nem korlátozódtak Kelet-Közép-Európára, hanem egészen Kínáig terjedtek. A 8. század közepén nevük kínai jelölései iráni (feltehetően szogd) formákat tükröznek, de létezik a Guoli 過利 (˂ *qālïs) török alak is.
Világi szerencse, változó velence
Authors: Forgács Tamás
Published: October 2024

Régibb szólásgyűjteményeinkből több olyan szólásmondás adatolható, amelyekben a szerencse szó a vele hangalakilag összecsengő velence komponenssel együtt szerepel. Ezek mindegyike a szerencse forgandóságára vonatkozik. A kifejezések legkorábbi előfordulásaiban a velence összetevő kisbetűs, később azonban többnyire a tulajdonnévi Velence szóalakot találjuk bennük. Mindebből következően Csefkó Gyula azt feltételezi, hogy a kifejezések velence komponense valójában köznév, jelentése pedig ʼkörhintaʼ, mert a régi körhintákon számos Velencét felidéző motívum volt látható. Ennek a magyarázatnak ugyanakkor komoly gyengéje, hogy velence szavunknak sehonnan sem adatolható ʼkörhintaʼ értelme. Magyarázatot kínál azonban az idézett szólások képi hátterét illetően az, hogy köznévi velence szavunk egyféle textilanyagnak is a neve volt, ebből pedig másodlagosan kialakulhatott a lexéma ʼszélzászló, szélvitorlaʼ jelentése, amely ide-oda fordulván tökéletesen alkalmas a szerencse forgandóságának szemléltetésére.
Újabb jubileum a Magyar Nyelv szerkesztőségében
Authors: Kiss Jenő
Published: October 2024

A Magyar Nyelv színvonalának garantálói elsősorban szerkesztői voltak. Elődje, Benkő Loránd tanítványaként jelenleg Juhász Dezső folytatja ezt a hagyományt, s immár 40 éve végez eredményes, körültekintő szerkesztői munkát a folyóiratnál. Ez a jubileum ad okot a köszöntésre.
Ação do PRODETER em municípios do Rio Grande do Norte - RN na atividade da bovinocultura leiteira
Authors: Magliano Emanuel de Santana , Silva Rosilene Agra da , Souto Lauter Silva , Santos Carlos Sérgio Araújo dos , Ferreira Aline Costa , Silva Osvaldo Soares da , Silva Rubilene Agra da , Oliveira Maria Luiza Agra de , Brilhante Rodrigo Lopes
Published: October 2024

O Programa de Desenvolvimento Territorial (PRODETER), “trata-se de uma estratégia do Banco do Nordeste para contribuir com o desenvolvimento territorial e local por meio da organização, fortalecimento e elevação da competitividade das atividades econômicas da Região. Objetivando avaliar as ações do PRODETER na bovinocultura leiteira em municípios do Rio Grande do Norte, debatendo os condicionantes e as medidas que podem ser utilizadas para o desenvolvimento territorial, foi realizada uma análise dos dados obtidos a partir de trabalhos e relatórios oriundos do Banco do Nordeste, e a extração de informações valiosas acerca de Territórios que utilizam o PRODETER na bovinocultura leiteira. Foram obtidos resultados e discutidos dados das seguintes regiões do Rio Grande do Norte: Mato Grande Sul, Sertão Central Cabugi, Potengi, Seridó Ocidental e Trairi. Os relatórios do PRODETER Rural indicam que, apesar dos desafios substanciais, há um potencial significativo para o crescimento e a melhoria das cadeias produtivas nos territórios analisados. A combinação de capacitação técnica, inovação tecnológica, financiamento adequado e maior organização associativa pode transformar a realidade desses pequenos e médios produtores, promovendo um desenvolvimento territorial sustentável e reduzindo as desigualdades regionais.
Multistability of synchronous modes in a multimachine power grid with a common load and their global and non-local stability
Authors:   FRC A. V. Gaponov-Grekhov Institute of Applied Physics of the RAS, Nizhny Novgorod, Russia, Khramenkov Vladislav , Dmitrichev Aleksej ,   FRC A. V. Gaponov-Grekhov Institute of Applied Physics of the RAS, Nizhny Novgorod, Russia, Nekorkin Vladimir ,   FRC A. V. Gaponov-Grekhov Institute of Applied Physics of the RAS, Nizhny Novgorod, Russia,   National Research Lobachevsky State University of Nizhny Novgorod, Russia
Published: October 2024

The purpose of this work is studying the dynamics of the power grid consisting of an arbitrary number of synchronous generators supplying a common passive linear load. We focus on searching the conditions for the existence and stability of synchronous modes, i.e. the main operating modes of a power grid. The possibility of the existence of non-synchronous (quasi-synchronous and asynchronous) modes is investigated. Methods. To study the dynamics of a power grid we use the effective network model in the form of an ensemble of globally coupled nodes-generators. The state of every node is described by the swing equation. The approach for reducing the effective network to the network with a hub topology (star topology) is proposed. We use numerical methods to construct a partition of the parameter space into areas with different operating modes of the power grid. Results. The conditions for the existence, stability and multistability of synchronous modes are obtained. The main characteristics of these modes are considered, such as the power supplied by generators to the grid and the distribution of currents along transmission lines. We constructed the partition of the power gird parameter space into areas with different dynamics. Conclusion. The power grid consisting of an arbitrary number of synchronous generators supplying a common passive linear load has been studied. We shown the presence of two types of synchronous modes: homogeneous and inhomogeneous. The first is characterized by equal powers and currents flowing through all load supply paths except one. The second provides another additional path, which differs from the others in current and transmitted power. Moreover, the currents flowing along the same path, but in various modes, differ. The presence of high multistability of inhomogeneous synchronous modes has been established. The possibility of coexistence of homogeneous and inhomogeneous synchronous modes, as well as quasi-synchronous and asynchronous modes, is shown. In the power grid parameters space we found areas corresponding both the existence of only synchronous modes and their coexistence with quasi-synchronous and/or asynchronous modes.
Stablecoins for Transferring Value in the Cryptocurrency Market
Authors: Wattanasin Peerapat , Limna Pongsakorn , Limna Pongsakorn
Published: October 2024

Stablecoins have gained prominence as an effective means to mitigate the inherent volatility in the cryptocurrency markets by providing a stable and reliable medium for value preservation and transfer. This research paper investigates the attributes that render stablecoins a preferable vehicle for value retention and transaction within these markets. By employing a quantitative methodology, this study collected data through surveys, with a sample size of 714 individuals chosen via purposive sampling techniques. To analyze the data, both descriptive and inferential statistical methods were applied. The demographic profiles of the sample were summarized using descriptive statistics such as frequencies and percentages. For examining the relationships between demographic factors (such as gender, age, education, income, and place of residence) and the perceived efficacy of stablecoins, inferential techniques including Chi-square tests and logistic regression were utilized. The logistic regression analysis specifically assessed how these variables influenced the likelihood of participants favoring stablecoins for financial transactions. The results indicate that the preference for stablecoins as a means of holding or transferring value within the cryptocurrency domain in Thailand varies significantly across different demographic groups, specifically influenced by factors such as gender, education, income, and place of residence. These outcomes provide insightful implications concerning the demographic influences on the adoption and utilization of stablecoins in financial activities.
Keywords: stablecoin, holding, transferring, value, cryptocurrency market
Control Performance Assessment of a Zero Harmonic Distortion Grid-Forming Converter for Medium Voltage Islanded Microgrids
Authors: Ramos Gabriel V. , Parreiras Thiago M. , Cardoso Filho Braz J.
Published: October 2024

The world is currently witnessing a rapid transformation in the production and utilization of electrical energy. The traditional centralized generation model for electric power is swiftly evolving into a more decentralized system, known as Distributed Generation (DG), which incorporates renewable energy sources situated closer to end-users. This shift towards DG has paved the way for the emergence of grid-forming converters, which play a pivotal role in enhancing voltage and frequency stability within microgrids (MGs) and isolated applications. This study focuses on assessing the performance of the Zero Harmonic Distortion (ZHD) in both stand-alone and parallel operation modes. The distinctive feature of this converter lies in its inherent ability to generate a sinusoidal voltage source without the need for capacitive filtering components, which can adversely affect cost, efficiency, and size while potentially contributing to resonance problems. This is achieved through a judicious combination of harmonic cancellation within a three-winding transformer and the utilization of Selective Harmonic Elimination Pulse Width Modulation (SHE PWM) dismissing a closed-loop control structure. Simulation and hardware-in-the-loop results presented in this work demonstrate the satisfactory performance of the ZHD grid-forming converter.
PRÁTICAS DE EXTENSÃO EM TÉCNICAS CONSTRUTIVAS TRADICIONAIS COM MAQUETES EM TERRA DESENVOLVIDAS PARA A COMUNIDADE TAIM, ITAQUI BACANGA, SÃO LUÍS (MA)
Authors: Gomes Braga Ingrid , Melo de Oliveira Nascimento Izabel  Cristina
Published: October 2024

Prática extensionista, com o povoado do Taim, São Luís (MA), de concepção espacial com uso de maquetes executadas com técnicas tradicionais de construção com terra, desenvolvendo pensamento crítico e consciência social discente.
Actividad antioxidante de variedades de cannabis del Norte del Cauca, Colombia
Authors: Arango Romero Paola Andrea , Delgado Jhan Carlos , Muñoz Sandra Marcela , Llanos Luis , Benítez Ricardo
Published: October 2024

El presente estudio tiene como objetivo dar a conocer la composición química y el posible potencial medicinal de variedades de cannabis no psicoactivo cultivadas en el departamento del Cauca. Los cannabinoides fueron identificados y cuantificados por cromatografía líquida de alta resolución acoplada a un detector ultravioleta (HPLC/UV) para el análisis de la flor, y cromatografía de gases acoplada a un espectrómetro de masas (GC-MS) para el análisis de los extractos etanólicos y contenido terpenos. Los fenoles se cuantificaron por reacción con el reactivo de Folin & Ciocalteau; para la determinación de flavonoides y antraquinonas, los extractos fueron tratados con AlCl3. Finalmente, para determinar la actividad antioxidante se utilizaron tres métodos: DPPH, ABTS y FRAP. Se pudo determinar que las variedades A y B contenían porcentajes de tetrahidrocannabinol total (THC) menores al 1% y porcentajes de cannabidiol total (CBD) entre 9-15%. En los extractos etanólicos se alcanzaron concentraciones (m/m) de CBD en las variedades A y B, del 10% y 13,7%, respectivamente. Se identificaron y cuantificaron nueve terpenos de la muestra A y siete de la muestra B, siendo el β-cariofileno el más abundante en ambos. Teniendo en cuenta que existe evidencia en la literatura de que la relación CBD/THC influye en la actividad biológica, se espera que los extractos etanólicos de las variedades A y B tengan una actividad antioxidante de moderada a baja, lo que, según algunos investigadores, puede estar asociado con el efecto neuroprotector, que puede verse favorecido por la presencia de β-cariofileno.
A note on zeros of orthogonal polynomials generated by canonical transformations
Authors: Molano Luis Alejandro Molano , Cuida Plazas Germán Darío
Published: October 2024

In this work, the behavior of zeros of orthogonal polynomials associated with canonical spectral transformations of weight functions on $[0,\infty)$ is studied. Namely, by means of standard techniques, we obtain interlacing properties for zeros associated with some particular cases of rational and Christoffel transformations
Residuos de yuca y plátano como fuente de azúcares fermentables
Authors: Vera Bravo Jesús Adrián , Zambrano Zambrano Ronny Adalberto , Ponce Wilmer , Córdova Mosquera Alexandra , Riera Maria Antonieta
Published: October 2024

Los residuos de yuca y plátano son biomasas lignocelulósicas, con potencial de revalorización mediante esquemas de biorrefinación basados en procesos fermentativos. La producción de azúcares es la etapa previa al proceso de fermentación, de allí su importancia en estudiarlas. En este trabajo previa caracterización de cáscaras de yuca (CY) y cáscaras de plátano (CP), se realizó un pretratamiento químico, con el fin de evaluar su efectividad en la obtención de azúcares reductores totales (ART). Se planteó un diseño de experimentos factorial 23, cuyos factores fueron: tipo de hidrólisis (ácida, alcalina), concentración del agente hidrolizante (1, 2 %v/v) y tiempo de reacción (30, 60 min). El mayor contenido de ART para la CP fue de 2.35 g/L y se obtuvo al trabajar con 1 % de NaOH. En la CY se alcanzó una concentración de ART de 1.95 g/L al usar H2SO4 al 2 %. Para ambos residuos, los mejores resultados se encontraron con un tiempo de reacción de 60 minutos. A través del ANOVA se conoció que los factores por sí solos, no ejercen influencia significativa sobre la producción de ART, aunque se demostró que existe interacción entre estos. La relación que existe entre los métodos de pretratamiento empleados en la producción de ART, es un paso preliminar a procesos fermentativos a través de los cuales es posible obtener una variedad de bioproductos vía biotecnológica.
Una revisión a las geometrías de Zariski uno–dimensionales
Authors: Torres del Valle Joel , Rizzo Pedro
Published: October 2024

En este artıculo, realizamos una revisión de las geometrías de Zariski de dimensión uno. Comenzamos con una breve retrospectiva de conceptos clave en toria de modelos y su evolución histórica. Luego, introducimos conceptos en geometría algebraica, explorando la intersección con la teoría  de modelos para motivar la teoría de modelos geométrica. Destacamos la Conjetura de tricotomía de Zilber y como la refutación  de Hrushovski condujo a Zilber y Hrushovski a aislar la clase de estructuras donde la conjetura tiene validez, dando origen a las geometrías de Zariski. Concluimos presentando los resultados
obtenidos por Zilber y Hrushovski en los 90s y ofrecemos una revision bibliográfica  actualizada del tema.
On Refined Neutrosophic Stochastic Process
Authors: Granados Carlos , Valencia Henao Leon A.
Published: October 2024

In this paper, we use the notion of crisp stochastic process and refined neutrosophic theory to define the concept of refined neutrosophic stochastic process. This project came to us due to the necessity to study randomness on neutrosophic theory taking the idea that in real world indeterminacy is around it. Besides, we choose refined neutrosophic theory since there are several indeterminacy situations in one problem. Throughout the paper, we present some important results and define the concept of $ n $-dimensional AH-isometry for defining some results on refined neutrosophic process.
Exploring the Antibacterial Potential of Platymiscium pinnatum
Authors: Mora-Estupiñan Daniela Alejandra , Chaves-Bedoya Giovanni , Ortiz Rojas Luz Yineth
Published: October 2024

Antibiotic resistance is a growing concern worldwide, necessitating the exploration of alternative antimicrobial agents. Platymiscium pinnatum (Jacq), a tree belonging to the Fabaceae family, has traditionally held medicinal value, especially in the form of leaf infusions for treating skin and eye infections. This study delves into the antibacterial potential of the ethanolic extract obtained from the bark of P. pinnatum. Using the established Kirby-Bauer agar disk diffusion method, the antibacterial activity of the extract was assessed against both Gram-positive and Gram-negative bacteria. Results indicated a pronounced inhibitory effect on several Gram-positive strains, with Staphylococcus aureus demonstrating the highest susceptibility. This signifies the potential of the extract as a therapeutic agent against infections caused by Gram-positive bacteria. On the contrary, the bioactivity of the extract was comparatively limited against prominent Gram-negative strains, such as E. coli and Pseudomonas aeruginosa. The differential activity between Gram-positive and Gram-negative bacteria could provide insights into the mode of action or specific compounds within the extract. The distinctive antibacterial properties of the P. pinnatum bark extract highlight its potential as a source for developing novel antimicrobial agents. These findings pave the way for further phytochemical analyses and studies to understand the specific bioactive components responsible for the observed effects.
Modelo de Detección y Eliminación de Ecos de Tierra
Authors: Cubillos Sánchez Rafael Orlando , Gómez Vargas Ernesto , Montoya Giraldo Oscar Danilo
Published: October 2024

La labor de identificación de fenómenos climáticos mediante la utilización de mediciones de radar se ve notablemente dificultada por la presencia de interferencias provenientes del entorno terrestre. La presencia de objetos u obstáculos que causan desviaciones en el haz de radar resulta en la generación de ecos de alta intensidad que comprometen la integridad de las mediciones y vician al proceso de detección. En el contexto de este estudio, se propone la consecución de un modelo concebido con la finalidad de discernir y catalogar las células contaminadas por ecos de tierra, procediendo posteriormente a la sustitución de los datos asociados a dichas células por información confiable y precisa. El enfoque de detección de ecos no deseados se materializa mediante un algoritmo basado en el análisis de diversas variables polarimétricas, que posibilitan la discriminación efectiva de las señales pertinentes a fenómenos climáticos genuinos de aquellas que se encuentran contaminadas por perturbaciones terrestres, permitiendo así una identificación y evaluación precisa de los eventos meteorológicos en cuestión.
Celulosa sulfonada como catalizador para la conversión eficiente de ácido levulínico en levulinato de etilo
Authors: Reynoso Rodrigo , Pasquale Gustavo A. , Ruiz Diego M. , Páez Luis A. , Martinez José J. , Romanelli Gustavo P.
Published: October 2024

Este estudio destaca el uso de ácido sulfúrico de celulosa como catalizador heterogéneo y reutilizable derivado de biomasa (Cortaderia Selloana) para sintetizar levulinato de etilo mediante esterificación catalítica de ácido levulínico con etanol. Se estudiaron los efectos de la temperatura, la carga del catalizador y la relación molar de etanol:ácido levulínico sobre el rendimiento de levulinato de etilo para optimizar la producción. Se logró un rendimiento del 95% a las 16 horas, 80 °C y una relación molar de 3:1 de etanol:ácido levulínico. Estos resultados demuestran que es factible obtener altos rendimientos de levulinato de etilo utilizando un catalizador derivado de biomasa.