bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of silver and heat treatment on properties of 03Kh17N10M2 austenitic steel wire
Authors: Gorbenko A. D. , Kaplan M. A. , Konushkin S. V. , Nasakina E. O. , Baikin A. S. , Sergienko K. V. , Ivannikov A. Yu. , Morozova Ya. A. , Oshkukov S. A. , Kolmakov A. G. , Sevost’yanov M. A.
Published: March 2024

The article examines the influence of various heat treatments, their temperature, as well as silver alloying on mechanical properties, phase composition and structure of steel wire from chromium-nickel-molybdenum austenitic stainless steel 03Kh17N10M2. Choice of the amount of silver alloying was based on previous studies of the antibacterial effect of modifying medical steels with silver. Since the antibacterial effect was confirmed on several bacterial strains, for the most efficient operation of alloys, it is necessary to determine the best temperature mode for working with them. Steel for the study was smelted and then transformed into wire through rolling, forging and drawing operations. On the obtained wire samples of different diameters with a silver content (0; 0.2 and 0.5 wt. %) mechanical tests were carried out to determine the elongation, yield strength and tensile strength. Various modes and temperatures of heat treatment were tested on wire of different diameters to study their effect on mechanical properties and structure. Microstructure of the wire samples subjected to heat treatment and obtained after drawing was investigated. A phase analysis was also carried out to determine the effect of silver in various quantities on austenitic steel. According to the results of the phase composition analysis, it was concluded that silver reduces the amount of gamma phase in steel, and this effect increases in proportion to the increase in silver amount. This change correlates with a slight drop in the metal ductility. At the same time, there are no significant changes in the strength characteristics and microstructure from the presence of silver.
Structural changes in the melt of a heat-resistant nickel alloy as phase transition of the second order
Authors: Mil’der O. B. , Tarasov D. A. , Tyagunov A. G. , Tsepelev V. S. , V’yukhin V. V. , Levonyan A. L. , Anoshina O. V.
Published: March 2024

Information about the behavior of melts of the high-temperature nickel alloys is the basis for creating new smelting technologies that significantly increase the service properties of metal products, as well as solve a number of technological problems. The results of numerous studies indicate structural changes occurring in various metal melts under the influence of temperature and time. For many years, there has been a scientific discussion about the nature of these phenomena, and a common opinion was formulated on a number of issues. Structural changes in metallic liquids are presented as a second-order phase transition, where a liquid of higher density is replaced by a liquid of lower density. These transformations in the structures of liquid metals are called liquid-liquid transition (LLT). Studies of the structure-sensitive properties of melts of the heat-resistant nickel alloys also reveal structural changes that irreversibly transform the melt into a microhomogeneous state. The research results presented in this article confirmed that structural changes in melts of the high-temperature nickel alloys are also a second-order phase transition, as evidenced by the breakage of atomic microgroups, uniform redistribution of alloying elements, and the formation of new clusters characterized by smaller sizes and greater chemical homogeneity. Therefore, these changes can be characterized as LLT, while this does not contradict the previously substantiated quasi-crystalline model of the microinhomogeneous state of liquid heat-resistant nickel alloys.
Effect of retained austenite on mechanical properties of steel with 15 % Cr
Authors: Pyshmintsev I. Yu. , Bityukov S. M. , Gusev A. A.
Published: March 2024

The paper considers the study of influence of retained austenite on the mechanical properties of steel of the austenite-martensitic class based on 15 % Cr after various heat treatment. Significant amount of retained austenite remains in the steel microstructure after quenching and subsequent tempering or heating in the intercritical temperature range that makes difficult to achieve a high yield strength. Destabilization of retained austenite with subsequent transformation into newly formed martensite is provided by multi-stage heat treatment which includes quenching, heating in the intercritical temperature range or above the AC3 point and final tempering. It was established that retained austenite remains in the microstructure of two-phase steel and has the form of blocks and thin layers located in the inter-lath space. Tensile testing of steel based on 15 % Cr showed that multi-stage heat treatment provides a high-strength condition corresponding to strength groups Q125 and Q135. A comparative analysis of deformation behavior of semi-austenitic steel in various states indicates that the beginning of the martensitic transformation after the final tempering shifts into the elastic region during tension and leads to the formation of stress-assisted martensite. It was determined that block-shaped retained austenite in steel with 15 % Cr predominantly undergoes martensitic transformation during tensile and impact tests at a subzero temperature. This is supposed to be the reason for the noticeably lower impact toughness of semi-austenitic steel with 15 % Cr compared to martensitic steel with 13 % Cr at equal strength.
On the study of pulsed metal heating
Authors: Apasova A. D. , Levitskii I. A. , Shatokhin K. S.
Published: March 2024

The work makes it possible to simplify development of pulsed metal heating technology. A software product was created to select the optimal values of operating parameters of pulsed heating on a mathematical model, which significantly reduces the setup time of a thermal unit using this technology. Test calculations showed adequacy of the results obtained to the operating parameters of functioning through-pass heating furnaces equipped with high-speed jet burners. The problems of controlling metal heating became particularly relevant due to the proliferation of high-performance rolling mills and increasing requirements for the quality of metal heating. In this regard, full implementation of the research program will make it possible to develop specific recommendations for increasing the productivity of heating furnaces and improving their energy efficiency.
ЦИФРОВИЗАЦИЯ ГРАЖДАНСКОГО ОБОРОТА: УТИЛИТАРНЫЕ ЦИФРОВЫЕ ПРАВА И ИНВЕСТИРОВАНИЕ
Authors: ПАЩЕНКО Илья Юрьевич , ПОТАПЕНКО Сергей Викторович
Published: March 2024

Целью работы является анализ гражданско- го законодательства в части оборота утилитарных циф- ровых прав, выпуск которых осуществляется в процессе инвестирования с использованием инвестиционных платформ (информационных систем в интернете). Исходя из цели, поставленной авторами, в задачи исследования входит анализ норм о краудфандинге и практике их применения с учетом цифровизации гражданского оборота в Российской Федерации. Вывод исследователей заключается в том, что утили- тарные цифровые права выступают разновидностью имущественных прав, имеющих одновременно обяза- тельственный характер и особую сферу реализации посредством использования информационных систем в электронной форме. Проведено сравнение отечественного опыта привлечения инвестиций и зарубежных подходов к краудфандингу, осуществляемых с исполь- зованием интернета. Отмечается, что такие права выступают одним из способов инвестирования, который осуществляется на инвестиционной платформе и не является востребованным финансовым инструментом в связи с терминологической сложностью действующего законодательства и недостаточным уровнем осведом- ленности инвесторов об используемых механизмах.
Blink reflex changes in patient with long COVID headache
Authors: Sadiye Gumusyayla , Gonul Vural , Serdar Barakli , Rezzan Yildiz , Orhan Deniz , Imran Hasanoglu , Hatice Rahmet Guner
Published: March 2024

Background: Headache is a common symptom of long COVID. Blink Reflex (BR) may indicate possible brainstem dysfunction or changes in excitability in the headache. In this study, we aimed to reveal whether one of the underlying mechanisms of headache in long COVID is dysfunction in the nociceptive centers in the brainstem. Methods: The study included 29 individuals with confirmed 2019 coronavirus disease (COVID-19) and 17 healthy volunteers. Individuals were divided into 3 groups: post-COVID-19 headache (Group 1), post-COVID-19 headache-free (Group 2) and healthy individuals (Group 3). Individuals in the groups were subjected to BR and the parameters obtained with BR were compared between the 3 groups. Results: Accordingly, when Group 1 and Group 2 were compared, the mean latency of the R1 component of the BR and the mean latency of the ipsilateral R2 component obtained via right-sided electrical stimulation were found to be longer in Group 1. When Group 1 and Group 3 were compared, the latency differences of the ipsilateral R2 component and contralateral R2 component of the BRs were found to be longer in Group 3, indicating distinct patterns of neural response between the two groups. Conclusion: In long COVID patients experiencing headache symptoms, the underlying cause of the pain symptom may be brain stem dysfunction.
Pathogen-Oriented Low-cost Assembly & Re-sequencing (POLAR): A highly sensitive and high-throughput SARS-CoV-2 diagnostic based on whole genome sequencing v2
Authors: A. Adastra Per , C. Durand Neva , Godinez Saul , Mahajan Ragini
Published: March 2024

Here, we introduce a low-cost, high-throughput method for diagnosis of SARS-CoV-2 infection, dubbed Pathogen- Oriented Low-Cost Assembly & Re-Sequencing (POLAR), that enhances sensitivity by aiming to amplify the entire SARS-CoV-2 genome rather than targeting particular viral loci, as in typical RT- PCR assays. To achieve this goal, we combine a SARS-CoV-2 enrichment method developed by the ARTIC Network (https://artic.network/) with short-read DNA sequencing and de novo genome assembly. For details on our computational pipeline for automated data processing, including documentation and test set, please visit our Githuh at https://github.com/aidenlab/Polar. The last step in this version contains a supplemental video with extra context and tips, as part of the protocols.io Spotlight series, featuring conversations with protocol authors.
GENIS – methodological approach for in silico genotyping (validation on Sus scrofa sequencing)
Authors: Kipen V.N. , Snytkov E.V.
Published: March 2024

A universal methodological approach has been developed that allows solving the problem of differentiating closely related species using raw NGS sequencing data. The method is based on the use of single nucleotide polymorphisms (SNPs). This approach is universal; it can be used in the bioinformatic analysis of sequencing results, regardless of the biological species under study. The approach we developed is based on automating the process of searching for nucleotide sequences flanking the desired allele. The search is carried out on the researcher's personal computer, does not require expensive equipment, the Python v.3.10 programming language and the Jupyter Notebook software development environment are free and publicly available. The methodological approach for in silico genotyping is implemented in the form of the GENIS software. Within the framework of this work, the program was tested on files with the results of genome sequencing of animals of the genus Sus. Revealed polymorphisms for the differentiation of pigs of the Duroc breed.
El Rol de las Ideas en una Reforma Educativa Contracultural. La Ley de Inclusión en Chile
Authors: Corral Evelyn , Villalobos Cristóbal , Parcerisa Lluís
Published: March 2024

El artículo explora el rol de las ideas y los discursos que permitieron la configuración de la agenda, discusión y promulgación de la Ley de Inclusión en Chile el 2015, que puede concebirse como un cambio contracultural en uno de los sistemas educativos más mercantilizados del mundo. Basándose en el marco del institucionalismo discursivo, la investigación se desarrolla a partir del análisis de dieciséis entrevistas con actores clave (ministros, académicos, legisladores, asesores) involucrados en el desarrollo de la política, así como el análisis de actas parlamentarias y otros documentos oficiales. Los hallazgos muestran que el debate de ideas que permitió la aprobación de la ley incluyó la movilización de ideas como el derecho a la educación y el fin del mercado, la generación de estrategias discursivas de persuasión sobre elementos técnicos de la ley y la generación de consensos sobre los tiempos de implementación de la misma, resaltando así la importancia de los procesos de construcción de significados comunes en la implementación de leyes educativas complejas.
Advanced Optimal Control Problem and Numerical Method for its Solving
Authors: Diveev A. I.
Published: March 2024

The advanced statement of the optimal control problem is presented. The difference between the extended setting of the problem and the classical one is that the model of the control object consists of two subsystems, a reference model, which generates an optimal motion path and a dynamic model of the control object with a system for stabilizing movement along the optimal trajectory. In the problem, it is necessary to find a program control function whose argument is time and a stabilization system function whose argument is the deviation of the state vector of the control object from the optimal program trajectory. The task has many initial conditions, one of which is used in the search for software control, and the rest for the search for a stabilization system. The control quality criterion is defined as the sum of the original quality criterion for all specified initial conditions. The procedure for trans forming the classical setting of the optimal control problem to an extended setting based on the refinement of the problem for its practical implementation is presented. To solve the extended optimal control problem, a universal numerical method is proposed based on a piecemeal linear approximation of the control function using evolutionary algorithms and symbol regression methods for structurally parametric optimization of the stabilization system function. An example of solving an extended optimal control problem for spatial motion by a quadcopter, which should conduct reconnaissance of a given territory in a minimum time, is given.
Analysis of the Effect of Technological Parameters on the Properties of Transparent Conductive Oxides
Authors:   Penza State University, Penza, 440026, Russian Federation, Pecherskaya E.A. , Zinchenko T.O. ,   Penza State University, Penza, 440026, Russian Federation, Golubkov P.E. ,   Penza State University, Penza, 440026, Russian Federation, Karpanin O.V. ,   Penza State University, Penza, 440026, Russian Federation, Gurin S.A. ,   Penza State University, Penza, 440026, Russian Federation, Novichkov M.D. ,   Penza State University, Penza, 440026, Russian Federation
Published: March 2024

It is shown that a promising method for obtaining transparent conductive oxides is spray pyrolysis, which allows to obtain films of proper quality without the use of vacuum. For the effective use of the spray pyrolysis method in order to obtain reproducible films with specified properties, it is necessary to take into account a variety of heterogeneous technological parameters that affect the quality of transparent conductive coatings. To this end, the authors have developed a model in the form of an oriented graph that displays the relationship of technological modes and quality parameters of transparent conductive coatings. The model displays parameters in the form of graph vertices, which are divided into technological and parameters characterizing the quality of transparent conductive coatings. The arcs connecting the vertices represent the properties of the coatings, and the arrows of the arcs indicate the direction from the action property to the reaction property. This model made it possible to systematize the influencing factors and offer an analytical description of the influencing parameters, reactions to them and properties of the synthesized coatings in the form of a system of differential equations. Based on the specified mathematical model of the relationship between technological modes and coating properties, a method for selecting optimal technological parameters has been developed in order to obtain transparent conductive coatings with specified properties. The technique has been tested on the example of the synthesis of a transparent conductive film of tin dioxide doped with antimony. Analysis of the factors affecting the surface resistance of coatings showed that the concentration of charge carriers significantly depends on the volume and concentration of impurities. The results of the analysis of experimental studies of the dependences of the concentration of charge carriers on the concentration of the impurity, the volume of the solution, on the thickness, the dependence of the surface resistance of the film on the thickness are presented
LEGAL AND METHODOLOGICAL ASPECTS OF GEOLOGICAL AND ECONOMIC ASSESSMENT OF MINERAL RESERVES AND RESOURCES IN UKRAINE: STATUS AND PROSPECTS
Authors:   State Commission of Ukraine on Mineral Resources (SCMR), Kyiv, Ukraine, LYTVYNIUK Stanislav , PAIUK Sergii ,   State Commission of Ukraine on Mineral Resources (SCMR), Kyiv, Ukraine
Published: March 2024

Practical application analysis of geological and economic assessment (GEA) results, its legal features and methodological support have been provided. Peculiarities associated with different GEA stages, purposes and objects have been considered during the analysis. The current state of geological study and analysis of subsoil use in Ukraine proves the regulatory and practical significance of geological and economic assessment of all stages for various types of special permits. Geological and economic assessment results ensure the State Balance of Mineral Reserves being updated with relevant information for further resource management. The authors' research has determined peculiarities of current requirements for geological and economic assessment, which require revision and alignment (adaptation) with regulatory and methodological standards used by the world's leading countries in the mining sector. Further directions for the assessment methodology development based on components of the geological and feasibility study of reserves and resources considering the experience in state expertise of geological and economic assessment materials on various minerals have been determined in the article.
How to Ensure Consistency of Territorial Planning Documents: Best Practices of Russian Urban Agglomerations
Authors: Lisina N. L. , Ushakova A. P.
Published: March 2024

The paper is part of a series of scientific articles devoted to the best management practices for Russian urban agglomerations. The authors of the paper focused on finding possible solutions to the most pressing problems given the current legislation, which explains the widespread use of empirical information in the paper. One of the key tasks of management at the level of an urban agglomeration is the formation and consistent implementation of a unified urban planning policy within the entire agglomeration. It should be based on documents of territorial planning and rules of land use and development of all municipalities, as well as some other types of urban planning documentation. For the purposes of shaping a unified urban planning policy, the documents of all municipalities must be coordinated with each other and subordinated to common goals and objectives.

Analyzing the cases of Vladivostok, Ekaterinburg and Novosibirsk urban agglomerations, the authors show some ways to ensure the consistency of urban planning documentation within the boundaries of the urban agglomeration. In order to identify the prerequisites for achieving the maximum effectiveness of each of them the authors compare the management practices used in these agglomerations. It is concluded that it is generally possible to achieve consistency of urban planning documentation within the framework of the current legislation, subject to the active position of the regional legislator.
Problems and Prospects of Legal Regulation of Public Relations connected with the Use of Neural Networks
Authors: Kiselev A. S.
Published: March 2024

The level of digitalization has increased significantly in the current century, the speed of the Internet has increased by many times, and it is now possible to access it from different parts of the world. Today, artificial intelligence occupies a special place in the digital technology market, which is already an indispensable tool in many sectors of the economy of developed countries. The purpose of the study is to identify the main urgent problems of using neural networks, as well as to form proposals for their legal regulation. The study uses the formal logical method, the comparative legal method, analysis and synthesis, methods of induction, deduction, and abstraction. It has been established that artificial intelligence cannot yet distinguish a joke from a real command or user request, respectively, further development of these technologies is impossible without the implementation of an analog function of cognitive thinking. It is concluded that self-regulation can be the best way to regulate the use of neural networks, since the legal system of continental law, to which the Russian Federation belongs, is quite rigid and often may not have time to regulate the rapidly developing field of artificial intelligence. Self-regulation is able to provide an opportunity to convey proposals on the legalization of effective rules for organizing the activities of IT market participants, to create an effective mechanism for guaranteeing the quality and safety of artificial intelligence based on the joint property liability of members of self-regulating organizations. At the same time, it requires the adoption of legal norms on liability for the illegal use of neural networks, as was done in the United States and China. In the near future, deepfakes created on the basis of neural network technologies may become a threat to national security and cause harm to thousands of citizens.
Simulation of alternative fuel combustion process in internal combustion engines
Authors: Boloev Petr  A. , Bodyakina Tatyana V. , Gergenova Tatyana P. , Enina Natalya A.
Published: March 2024

BACKGROUND: The tasks of improving fuel efficiency and environmental performance of engines are interrelated with the technical, economic, resource performance and reliability of their operation.
AIM: In this regard, the aim is simulation of the alternative fuels combustion process.
METHODS: To achieve this aim, the method for preparing a water-fuel emulsion mixed with diesel fuel has been developed and experimental studies have been carried out with the measurement of toxic components of exhaust gases from diesel engines.
RESULTS: As a result of the research, the most optimal droplet sizes of water-fuel emulsions were revealed after 4–6 processing cycles with the smokiness reduction by 3 to 5 times, the NOx reduction by 2 to 3 times, the CO reduction by 20–30%, depending on the operating modes.
CONCLUSIONS: As a result of the research, it was found that the use of alternative fuels makes it possible to expand the fuel balance and to improve environmental performance.
About the work of the XVII Scientific and Practical Conference of Young Scientists and Specialists “Forensic medical science and practice”
Authors: Barinov Evgeny K. , Fokin Alexey S.
Published: March 2024

On December 7, 2023, the Department of Forensic Medicine and Medical Law Russian University of Medicine of the Ministry of Health of the Russian Federation jointly with the Forensic Medical Expertise Bureau of the Moscow Health Department held the XVII Scientific and Practical Conference of young scientists and specialists "Forensic Science and Practice". The conference was attended by future forensic physicians ― students, residents and postgraduates, teachers of forensic medicine departments of medical universities of the Russian Federation, as well as novice forensic experts and their experienced supervisors.
Professor E.Kh. Barinov in his welcoming speech to the participants of the conference told about the history of such events in Moscow, noted their scientific and practical significance, which contributes both to the formation of interest of the young generation of specialists in scientific research, and the acquisition of experience in public speaking and versatile discussions.
In the main part of the day the reports of the conference participants were delivered followed by discussion of the topics raised.
At the closing of the event, the high level of preparation of the speakers was noted and a detailed analysis of the speeches was presented. The Organising Committee wished the young scientists, specialists and their supervisors success in continuing their work on the selected topics.
The Influence of Federico García Lorca on Dai Wangshu’s Left-Wing Poetry Creation: The Theme of Death
Authors: Jiajing Song
Published: March 2024

Federico García Lorca was one of the representative poets of the Generation of ’27. His works demonstrate a strong opposition against the Spanish fascism. His contemporary poet Dai Wangshu got inspiration from his poems, which changed the direction of the Chinese poet’s creation. García Lorca’s comprehension of death led Dai to think over death, a theme he had never touched upon in his earlier poems. Dai got rid of his fear of death and started to express his understanding of death in his poems against the Fascist Japanese invaders at that time. Adopting an approach of the Aesthetic of Reception, the present article intends to analyze how García Lorca, his attitudes towards death and his way of putting it in his poems, made a deep left-wing influence on the Chinese poet.
Contrastive Study of the Semantics of White and Black in Spanish and Chinese Phrases
Authors: Yuecheng Wang , Xiaowe Zhang
Published: March 2024

The present work establishes a corpus that includes the phraseological units comprising “white” and “black” in 8 Spanish dictionaries and 6 Chinese dictionaries, within which a quantitative and qualitative analysis is carried out on the semantics of said phraseological units. The study discovers that through the metaphorical and metonymic process, similar figurative meanings come mainly from the physical perception of the environment and one's own colors, and the different meanings are motivated by cultural specificity, especially religions, superstitions, mythologies and legends; in Spanish, the figurative meanings of white and black constitute a violent contrast, while this antagonism is blurred in Chinese. Furthermore, in both languages, black is mainly associated with negativity, but the connotation of white is mixed and complicated; in the corpus, white in Chinese belongs to broader grammatical classes, which not only serves as a noun or adjective, but also a verb and adverb; and the verbalized white in Chinese is usually associated with “speak” and the adverbialized one is linked to the meanings “in vain” or “without cost.”
Estrategias de negación del feminicidio en el discurso político mexicano
Authors: Rico-Sulayes Antonio
Published: March 2024

El presente artículo tiene como objetivo mostrar las estrategias discursivas empleadas por los políticos mexicanos para hablar de la crisis de feminicidios en este país, particularmente cuando intentan eludir su responsabilidad al respecto o incluso negar la existencia de la crisis en sí. Apoyado del análisis del discurso, este estudio muestra la diversidad y abundancia de recursos que los políticos usan para intentar salvar su reputación y soslayar la crisis. La investigación se enfoca en el discurso de algunos políticos mexicanos de diferentes partidos en el momento que responden al cuestionamiento de sus acciones ante los medios. El aparato teórico utilizado permite mostrar los sesgos en el discurso y develar la deslegitimación que los políticos intentan hacer del conflicto.
Naturaleza de las organizaciones educativas
Authors: Ropa-Carrión Brígido , Alama-Flores Marcos , Flores-Arteaga Ana María
Published: March 2024

Esta pesquisa de tipo documental pretende describir y analizar los rasgos de las organizaciones educativas, así como sus propósitos involucrados en la formación del ser humano, de conformidad con los principios fundamentales de los paradigmas del positivismo y pospositivismo, la teoría de la complejidad y la visión holística. Se establecen las limitaciones del positivismo y pospositivismo con respecto a la conceptualización y los propósitos de las organizaciones escolares. Se destaca de igual forma la concomitancia entre la concepción del ser humano y los fines de la educación, reconociendo que estos últimos deben responder a la visión que la sociedad tiene acerca del hombre, del mismo modo que las organizaciones educativas deben adoptar el propósito o norte de formar al ser humano integralmente.
Conciencia ambiental: Empoderando cambios mediante la Alfabetización
Authors: Yupanqui-Guevara Rocsana del Pilar , Leyva-Aguilar Nolberto Arnildo
Published: March 2024

La contaminación ambiental plantea desafíos significativos que requieren abordarse mediante la educación ambiental y por ende en las estrategias educativas. La educación ambiental empodera a las personas para adoptar comportamientos sostenibles. Las estrategias educativas, como programas ambientales y enfoques innovadores, promueven la educación ambiental y forman ciudadanos comprometidos con el medio ambiente, integrar esta educación en el currículo y la sociedad genera conciencia colectiva y promueve la protección del entorno natural. El presente artículo es una revisión exhaustiva y estructurada de los estudios más actuales relacionados con diversas técnicas y metodologías educativas enfocadas en aumentar la conciencia ambiental en entornos escolares; se busca analizar las diferentes estrategias educativas para mejorar la conciencia ambiental en las escuelas. El diseño de la investigación es cualitativo, de tipo teórico sistemático. La técnica empleada es el análisis documental. Se revisó diversas bases de datos científicas tales como MyLOFT, google publicación en revistas científicas desde el año 2019 indexadas en Scopus, Scielo, Web of Science, Scopus, ProQuest, y Google Scholar, también se usa la metodología PRISMA. Los resultados obtenidos del análisis de diversas investigaciones brindan datos favorables y significativos que respaldan de manera contundente la existencia de una relación positiva entre la alfabetización ambiental y la conciencia ambiental en los estudiantes y miembros de una comunidad educativa. Estos resultados se atribuyen a la implementación de estrategias, modelos y propuestas que han contribuido a mejorar la conciencia ambiental en el entorno escolar.
Factores tecnológicos para un modelo de gestión tecnológica de programas de posgrado a distancia en Colombia
Authors:   Universidad Libre, Paz Quintero Hugo Bécquer
Published: March 2024

Con el desarrollo de la presente investigación, los autores se propusieron identificar los factores tecnológicos que permiten el diseño de un modelo de gestión tecnológica para el desarrollo de programas de posgrado a distancia en las Instituciones de Educación Superior colombianas. Para alcanzar el objetivo, se adoptó la metodología de investigación mixta, cualitativa y cuantitativa. Para la metodología cualitativa se diseñó una entrevista conformada por cinco preguntas abiertas que permitieron alcanzar una parte de los objetivos específicos con tres instituciones donde se realizaron las entrevistas. Se aplicó el enfoque de casos para evaluar cinco instituciones de Educación Superior colombianas, cuatro con programas de posgrado a distancia (Universidad Manuela Beltrán, Fundación Universitaria Católica del Norte, Universidad Nacional Abierta y a Distancia y Universidad Autónoma de Occidente) y una con programas de posgrado presenciales (Universidad Libre, seccional Cali) para con ésta última realizar comparaciones; todas localizadas en las principales ciudades del país. La metodología cuantitativa se aplicó también a cada uno de los casos, para lo cual se construyó un instrumento de encuesta que se trabajó en cuatro de las instituciones seleccionadas. Esta encuesta se evaluó con el alfa de Crombach, primero con un piloto para uno de los casos y luego en cada grupo de los casos encuestados. Se utilizó la regresión lineal múltiple, para demostrar la hipótesis que el dominio de las TIC (cultura tecnológica) de los profesores de posgrados a distancia dependía de la experiencia como estudiante de programas en la modalidad y de la experiencia como docentes de programas también a distancia. La investigación permitió desarrollar un artefacto para la generación de los cálculos estadísticos de las dos partes de la encuesta, para demostrar la dependencia del pilar formación y educación superior de pilares: la preparación tecnológica en que se encuentre un país; la salud y la educación primaria; la sofisticación de los negocios; y, de la eficiencia del mercado de productos. Para los programas de posgrado a distancia, se definieron los conceptos de gestión tecnológica y sus partes, así como el de cultura tecnológica, y se identificaron y describieron los factores tecnológicos.
Intelligent ANFIS-Based Distributed Generators Energy Control and Power Dispatch of Grid- Connected Microgrids Integrated into Distribution Network
Authors:   Pan African University Institute for Basic Sciences, Technology and Innovation (PAUSTI), Kenya, Odonkor Ebenezer Narh
Published: March 2024

Power supply management is a critical problem in the operation of a distribution network, considering the causes of large power losses and interruptions in the main grid caused by the unknown connection of loads and DGs that affect power delivery to customers downstream of a distribution network. The above-mentioned problems can be reduced by the integration of microgrids close to load centers and developing a controller using adaptive control techniques to enhance reliable power supply. For this reason, this paper presents an intelligent method for distributed generators' energy control and power dispatch of microgrids integrated into a distribution network employing an Adaptive Neuro- Fuzzy Inference System (ANFIS). The aim is to control distributed generators energy sources, loads, and power dispatch of grid-connected microgrids among multiconnected power sources to maintain a stable power supply without using any optimization techniques. The proposed intelligent ANFIS system is trained for power-sharing purposes and applied to the microgrid controllers. The mathematical modeling of distributed generators, system design, simulation, and testing of the proposed method were done using MATLAB/Simulink software. The results show that the proposed controller is capable of power dispatch and controls the energy harvest of distributed generators. Additionally, it can assign microgrid power source(s) to additional load(s) connected to the active distribution network without interruptions of power flow. The obtained results outperform similar works that used hybrid ANFISPID (Adaptive Neural Fuzzy Inference System-Proportional- Integral-Derivative), PSO-ANFIS (Particle Swarm Optimization-Adaptive Neural Fuzzy Inference System), and GA-ANFIS (Genetic Algorithm-Adaptive Neuro-Fuzzy Inference System) by automatically connecting and controlling distributed generators energy sources with effective power dispatch in mitigating downtime of grid power operations.
Comparative Investigation of DSP-Based Speed Control of PMSM Using Proportional Integral and Takagi-Sugeno Fuzzy Logic Controller
Authors:   National High School of Arts and Crafts, Moulay Ismail University, Meknes, Morocco, Askour Rachid
Published: March 2024

This paper presents the simulation and experimental results of speed control of a three-phase Permanent Magnet Synchronous Motor (PMSM). The control techniques employed in this work include a Proportional Integral (PI) controller and a Takagi-Sugeno Fuzzy Logic Controller (TS-FLC). While theory and simulation help in predicting the PI controller settings for real drive implementation, further adjustment of the PI controller coefficients is still needed for optimal performance. However, the complexity of PI controller tuning can be overcome by employing a fuzzy logic controller, which is less affected by variations in model parameters and load torque. Two variants of the proposed TS-FLC are implemented: a simple algorithm with 9 rules and a standard algorithm with 49 rules. The drive system utilizes Field Oriented Control (FOC). The control program is developed using the C/C++ programming language and executed on the Texas Instruments TMS320LF28335 Digital Signal Processor (DSP), known for its intelligent motor control capabilities. The drive system evaluation was performed through simulations and experimentation using the MCK28335 professional development kit provided by Technosoft Company. The simulation and experimental results of the proposed controllers are compared under various conditions, including speed reversal and load torque variations.
Restoration of Radiographic Neutron Image Using Single-Channel Blind Deconvolution
Authors:   School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia, Khairiah Y.
Published: March 2024

This paper addresses the challenge of accurately estimating the 2D Point Spread Function (PSF) or blur kernel in neutron radiography, where traditional methods, such as the Edge Spread Function (ESF), prove time-consuming and reliant on manual edge selection. The proposed alternative introduces a robust sparse image prior known as the enhanced Patch-Wise Intensity (EPI) image prior in a singlechannel blind deconvolution algorithm, avoiding the need for intricate devices like pinhole or slit phantoms. Leveraging regularization and optimization techniques, the algorithm efficiently estimates PSF in a single image through a multilayer iterative alternating approach. The study aims to enhance PSF accuracy, leading to a more accurate solution to the neutron image restoration problem. Comparative results with real neutron images indicate the proposed method outperforms ESF, demonstrating improved overall image quality both visually and quantitatively in terms of blind/no reference evaluation (BRISQUE).
A Fast and Simple Machine Vision Framework for Approximating the Volume of Axi-Symmetric Objects Using Shadow Ray Casting
Authors:   School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand, Suesut Taweepol
Published: March 2024

The volume measurement using machine vision system is contactless techniques that play an important role in industries now a day. Basically, three-dimensional reconstruction is required to determine a depth using a special lighting system or multiple cameras. This increases the complexity of the measurement system. A fast and simple machine vision framework called RayVol for estimating the volume of axisymmetric objects in near real-time using a single camera and simple illumination is presented. The RayVol framework employs a shadow casting method to reconstruct the 3D shape of the object by tracing rays from the object’s shadow pixels to the light source location. The result of this technique shows a significant accuracy improvement from the area-projection method. A virtual slice representing the cross-section of an object is reconstructed using a cubic spline approximation from baseline points derived from the boundary pixels of the object image and a shadow casting method. The volume estimation was calculated by restricted integration using the Riemann sum estimation algorithm, and the closed area of the virtual slices was calculated using the shoestring algorithm. Mangoes were used as a case study of the RayVol framework. The volume estimation provides the correlation coefficient of 0.9849 between the developed system and the water replacement method.
Experiences of Indonesian Adolescents Losing Parents Due to COVID-19: a Phenomenological Study
Authors: Novianti Evin , Mustikasari Mustikasari
Published: March 2024

Background: Adolescents losing their parents is the worst event they experience during the COVID-19 pandemic. Adolescents raise a traumatic response after a loss occurs.Objective: This study aims to explore the description of the condition of adolescents in dealing with the loss of parents due to COVID-19.Methods: Qualitative research design with a phenomenological approach. The number of participants is 12 people with the criteria of youth aged 10-19 years consisting of men and women who have lost their parents due to COVID-19. Interview data were processed using the Colaizzi technique.Results: Four themes through the theme analysis, namely adolescents are not ready to face sudden loss, adolescents experience suffering due to the loss of parents, adolescents find it difficult to go through the loss process, and changes occur in adolescents due to the loss of parents.Conclusion: The findings of this study show that the sudden loss of parents due to COVID-19 harms adolescent mental health. As a result, mental health nurses in the community need to detect adolescents early for signs of stress and anxiety due to the loss of parents and take steps to strengthen adolescents' self-defense after loss.
The Whole Picture of Female Nurse Faculty Leaders: A Systematic Review of Qualitative Studies
Authors: Suarilah Ira , Aurizki Gading Ekapuja , Purwaningsih Purwaningsih , Mulyadi Mulyadi , Vourvachi Christina
Published: March 2024

Background: Gender stereotypes influence women and men who work as nurses. In education setting, the dominance of female nurses has been challenging given their respective roles in management and leadership, both professionally and personally.Objective: To explore the experience and synthesise available literature on female nurse leaders in the academic settings.Methods: Systematic review of qualitative study on any type of qualitative from academic database: ProQuest, PubMed, CINAHL, and MEDLINE was conducted. Starting from 1st January 1990 to 31 December 2021. The criteria; freely accessible, complete in terms of content, authored, published in the English language, and combination of keywords including nurse, nursing, faculty, dean, head, and director were applied. The review was reported following PRISMA format. The studies included were assessed using the Critical Appraisal Skills Program tool (CASP) 2017.Results: The screening process resulted in the selection of fourteen (14) studies from the USA, Canada, UK, and Australia that used a range of qualitative methodologies, including descriptive explorative, phenomenology, grounded theory, feminist research, case studies, and a number of data collection techniques, including open-surveys, interviews, field notes, campus observations, document analysis, and analytic memos. Thematic analyses were applied and yielded six main themes: dealing with power imbalance and gender discrimination; addressing problems related to people; disruption in fulfilling leadership roles; leadership personalities; people-oriented leadership quality; and change-oriented leadership quality.Conclusion: Female faculty leaders in nursing reported a variety of personal and professional challenges. The existing literature scarcely captured the gender-specific challenges encountered, including gender stereotyping, and struggle to balance their personal and professional life. Therefore, it is crucial that nurses provide chances for the following leaders in order to enhance nursing education, support the process of leadership regeneration, and develop the profession.
Women's Leadership in The Healthcare Sector
Authors: Vitriya Ficka , Septembriana Nike
Published: March 2024

Women are underrepresented in healthcare leadership, yet there is no evidence of effective organizational strategies, practices, or policies that help women develop their careers. We want to look into this across industries to see how far women have come in terms of leadership in healthcare. The literature study identified two major themes: impediments to women's leadership and methods to expand women's leadership positions in the health sector. Socio-cultural hurdles, work-life conflicts, sexual harassment, gender disparities, and a lack of networks and role models for women leaders are all examples of these impediments. Furthermore, the process in the administration and organization of health, as well as unique career development programs for women, are all part of the goal to strengthen the leadership role of women in the health sector. This study lays out the evidence supporting organizational strategies to promote women in leadership in several settings, with implications for health care. It focuses on organizational transformation rather than people, documenting observable improvement across intervention areas. This work directly informs national efforts with international ties, allowing women to fulfill their professional aspirations in health care and move beyond obstacles to solutions.
Periodontal disease and pregnancy outcome in low-risk pregnant women
Authors: Anadure Prerna , Gopalakrishna Nandini , Ashwini  , Hiremath Shashank
Published: March 2024

Background: Preterm delivery is an important cause of neonatal morbidity and mortality. Various infections in the pregnant mother may play a role. Periodontal disease in pregnancy is associated with preterm, low birth weight and small for gestational age neonates. The objective of this study was to correlate the association between periodontal disease and pregnancy outcome in low-risk pregnant women.
Methods: This was a prospective observational study from November 2019 to May 2021 at Ramaiah medical college and hospitals, Bengaluru. All pregnant women with gestational age <32 weeks and without any risk factors receiving antenatal care at Ramaiah hospitals were included.
Results: The study included 109 pregnant women without any risk factors. Periodontitis was found in 50.45%. The Plaque Index mean was 1.237 in cases and 0.844 in controls and was significant. Mean gingival index of cases was 1.282 and of control was 0.913. Nearly 94.5% of cases were having gingivitis and only 24.1% were having gingivitis in controls. The difference was significant. Preterm delivery was seen in 63.6% of cases and in 7.4% of controls which was significant. The birth weight of newborns was <2.5 kg in 69.1% in cases and 9.3% in controls which was significant.
Conclusions: Periodontal disease in pregnancy is an important risk factor for preterm delivery and low birth weight. Periodontal disease can be diagnosed by simple oral examination and can be treated. Early treatment in pregnancy leads to a successful outcome.