bluuebunny/crossref_metadata_2025 huggingface dataset:
Ineffective Strategies in Scientific Communication: Textual Wordiness vs. Clarity of Thought in Thesis Conclusion Section
Authors: Tikhonova Elena V. , Kosycheva Marina A. , Mezentseva Daria A.
Published: July 2024

Introduction. The issue of lexical redundancy in academic writing remains crucial. Research based on Russian-language corpora is vital for the development of effective targeted academic writing courses that meet the unique needs of universities. This paper aims to identify factors through examples of wordiness in the Conclusion sections of theses to alter the design of courses broadening academic writing skills to fight against textual redundancy at various educational levels.
Materials and Methods. A corpus of 72 theses across three educational levels (Bachelor’s, Master’s, and Candidate degrees) was analyzed. We selected theses from the repositories of the HSE University and Moscow City University. We focused on Conclusion section due to its highest level of conciseness: textual redundancy critically impacts its effectiveness. The analysis included a comprehensive procedure of raw data extraction, coding, conceptualization during iterative discussions, and classification according to Brohaugh’s taxonomy.
Results. “Invisible” type of wordiness is a prevalent issue in academic writing across all levels of education. Such types as “overkill”, “weak-kneed” and “empty” occur more frequently in research in Master’s and Candidate’s theses. The need to comprehend the reasons behind the use of different types of wordiness and their impact on readability is stressed. Candidate’s theses are wordier despite the expectation of a higher level of academic writing skills at this level.
Discussion and Conclusion. The study highlights the systemic role of academic writing courses at all educational levels in reducing text wordiness. Despite our expectations of advanced writing skills in Candidate’s theses, their high level of wordiness indicates the need for developing effective academic writing strategies. It is crucial to implement a personalized approach to academic writing instruction, considering the specific needs and challenges of each educational level, to create more concise academic texts. The paper provides insights into approaches to designing academic writing courses.
Lifelong Learning in Multi-Purpose Activity of Self-Employed and Employed Persons
Authors: Lyz Natalia A. , Gladkaya Elena V.
Published: July 2024

Introduction. Managing the lifelong learning environment requires a certain understanding of the educational needs and demands of learners of different categories. However, there is not enough research devoted to the psychological aspects of non-formal and informal learning of working subjects. The aim of the study is to characterize the main forms of learning, inducing and sustaining motivation, engagement and self-regulation of learning among employed and self-employed individuals.
Materials and Methods. The study used the methods of theoretical analysis of the problem, testing and survey with the use of educational experience diagnostics methodology and author's questionnaires based on the Informal Learning Questionnaire and Academic Motivation Scale. The empirical sampling encompassed 295 people, including 143 self-employed and 152 employed.
Results. The results showed the diversity of forms of lifelong learning used by employed persons, as well as the polymotivated nature of this activity. It was found that professional and cognitive motives are the most pronounced among the employed and self-employed. Respondents are motivated to learning by the desire for self-improvement, professional development objectives, interest in the subject of training, the need for new knowledge and skills. It is proved that self-employed persons, compared to employed persons, have a higher level of involvement, self-regulation of learning and intrinsic motivation focused on professional and personal growth and diverse interests.
Discussion and Conclusion. The results of the study expand scientific ideas about lifelong learning and for the first time demonstrate the specificity of involvement and motivation for learning individuals with different employment status. The materials of the article will be useful for researchers, specialists in human resources development, marketers of the education segment, and developers of additional educational programs.
AI and machine learning tools in plantation mapping: potentials of high-resolution satellite data
Authors: Segar Nithya , Kaliyaperumal Ragunath , Pazhanivelan S. , Latha P.
Published: July 2024

Abstract. Plantation mapping plays a vital role in agriculture, forestry, and land management. The integration of Artificial intelligence and Machine learning techniques with high-resolution satellite data has revolutionized the accuracy and efficiency of plantation mapping. Utilizing AI and machine learning tools for plantation mapping offers a transformative approach to efficient and accurate land management. These technologies enable automated analysis of satellite imagery and other geospatial data, facilitating rapid and precise identification of plantations, crop health assessment, and yield predictions. The integration of AI enhances the mapping process, providing valuable insights for sustainable agriculture, resource optimization, and environmental monitoring. The application of these advanced tools in plantation mapping represents a significant leap towards data-driven and environmentally conscious land management practices. It presents a promising advancement in agricultural practices. By leveraging these technologies for automated analysis of satellite imagery and geospatial data, accurate and timely mapping of plantations becomes feasible. The use of AI and ML tools in Plantation mapping, challenges in integration, the possible solutions and its future prospects are reviewed in this paper not only to enhance efficiency but also to offer insights into crop health, aiding in precision agriculture and resource optimization.
Sátira política y clandestina entre América y España: «Al marqués de Mancera cuando volvió de virrey de Lima» (edición y anotación)
Authors: Rodríguez-Mansilla Fernando
Published: July 2024

Este trabajo analiza el poema en pareados «Al marqués de Mancera cuando volvió de virrey de Lima», el cual se encuentra en el ms. 3917 de la BNE, también conocido como el volumen 6 del Parnaso español. Mi objetivo central es editar el poema y ofrecer una anotación que permita su comprensión, así como presentar un marco interpretativo mínimo, en torno al contexto (la situación económica de 1640-1650) y, sobre todo, al personaje aludido (por su actuación como virrey).
Sátira contra el duque de Medinaceli: «Junta de vivos y muertos»
Authors: Roncero-López Victoriano
Published: July 2024

Don Juan José de Austria, hijo ilegítimo de Felipe IV, es uno de los personajes más interesantes de la segunda mitad del siglo XVII en España. El Infante se sirvió de la literatura como de una poderosa arma política para atacar a sus enemigos y defenderse de los panfletos escritos contra él. Su sucesor en el cargo de privado del rey fue el Duque de Medinaceli, que también fue objeto de duros ataques de sus enemigos. La Junta de vivos y muertos es un perfecto ejemplo de sátira política de finales del siglo XVII en el que sus adversarios políticos criticaron el origen, las medidas económicas y la política internacional de Medinaceli, al mismo tiempo que defendían la labor de gobierno de don Juan José de Austria.
«Venegas te vas o te quedas», poesía clandestina insurgente en la Puebla de los Ángeles 1810-1812
Authors: Sánchez-Sánchez David
Published: July 2024

El presente estudio aporta nuevos documentos inéditos sobre la poesía clandestina insurgente en la Nueva España, concretamente en Puebla de los Ángeles (1810-1812). La crisis social a causa de la Invasión Napoleónica generó una serie de pasquines, naipes y textos muy diversos que, aunque no se basaran necesariamente en fuentes demostrables, evidenciaron la necesidad de incorporar voces y pensamientos anónimos a unos hechos dramáticos que amenazaron a la fe y a la monarquía católica. Estas críticas, desde la acción del vital eje de la Nueva España en la defensa de la monarquía católica, han quedado en cierto modo olvidadas debido a la dificultad de localización y acceso a fuentes primarias que, como en este estudio, nos acerquen a dichas expresiones para poder ser analizadas e insertar dichas voces en los procesos sociales de su contexto. En todo ello se observa la necesidad de legitimación de una identidad propia —política y religiosa— dentro de la monarquía católica a ese lado del Atlántico, que de forma clandestina tomó los versos como punta de lanza y expresión cultural ante el dramatismo de una incipiente Guerra Civil.
«Os Toiros» (1796) de António Joaquim de Carvalho: Metarreflexividade, crítica social e recriação satírico-burlesca da épica camoniana
Authors: Silva-Pereira Paulo
Published: July 2024

En Portugal, a lo largo de la segunda mitad del siglo XVIII, se produjo un crecimiento significativo en el número de textos que podían catalogarse como poemas heroicómicos, y la tendencia se intensificó aún más en el siglo XIX, disminuyendo únicamente en el siglo siguiente. El carácter cómico y ridículo de personajes, discursos y acontecimientos que llenan el horizonte de estos poemas no debe perder de vista su intrínseca finalidad satírica. Os Toiros (1796), de António Joaquim de Carvalho, ofrece un buen ejemplo del enorme potencial de la sátira, ya que problematiza prácticas culturales profundamente arraigadas en el tejido social portugués de la época, como era el caso de las fiestas taurinas. Por otro lado, la dimensión intertextual constituye una parte esencial del juego paródico, especialmente a partir de la épica camoniana, pero el autor, como tantos otros en el contexto europeo, se posiciona en un espacio ambiguo entre la emulación y la subversión de modelos. La risa es cultural, ligada a contingencias y prácticas sociales imperantes en un período determinado, lo que requiere considerar no sólo la experiencia del autor, la tradición literaria en la que se basa y el sistema de valores imperante. Se sabe que la transfiguración de la tradición épica aplicándola a una realidad cotidiana y casi mezquina, en su forma más insignificante, es un rasgo distintivo de este tipo de producción cultural. Finalmente, el poema nos invita a reflexionar sobre los procesos y circuitos de producción, difusión y consumo de textos literarios.
«Corcovilla» y «Pata coja»
Authors: Von-der-Walde-Moheno Lillian
Published: July 2024

Análisis semántico-estilístico de las letrillas satíricas Corcovilla, atribuida a Francisco de Quevedo, y Pata coja, atribuida a Juan Ruiz de Alarcón. Particularmente observo el tratamiento otorgado a las características retóricas a persona: en Corcovilla se utilizan principalmente referencias corporales para, además de mover a risa, provocar descodificaciones morales negativas; en Pata coja el ataque ad hominem se sustenta en la res certae de la vida del adversario, y las referencias a hechos deleznables sirven de base para que se desprenda la evaluación moral.
«Pero Vázquez de Escamilla» y «El Águila del Agua»: una nueva ojeada
Authors: Ferreira-Barrocal Jorge
Published: July 2024

En el trabajo que sigue a continuación me propongo arrojar nueva luz sobre las relaciones que comparten El Águila del Agua de Luis Vélez de Guevara y la comedia de Quevedo Pero Vázquez de Escamilla. Ambos poemas dramáticos, tal y como documentó Plata, comparten el subtítulo Representación española y la presencia del valiente Pero Vázquez Escamilla. A juicio del crítico los autores se habrían puesto de acuerdo para escribir dos piezas en paralelo sobre un mismo material. En este estudio proponemos que Vélez de Guevara lo que hace es replantear dramáticamente, con suma originalidad, el camino hacia Lepanto del Escamilla aparecido por primera vez en el fragmento inicial de la comedia quevedesca. La viabilidad de la hipótesis radica principalmente en la intertextualidad de las jácaras de Quevedo, que fueron reelaboradas y reutilizadas por no pocos dramaturgos en el Seiscientos, quienes, por otro lado, dieron continuidad a los valientes protagonistas de sus jácaras poéticas. Refuerza nuestra interpretación, igualmente, la composición de El Diablo Cojuelo, un relato preñado de usos estilísticos reminiscentes de la pluma del polígrafo madrileño, todo un referente para el astigitano. El agregado de lo anterior —con la coda de las fechas de composición— nos endereza a concluir que Vélez de Guevara revive al rufián literario con posterioridad, insertando al personaje en una nueva ficción inspirada en los hechos extraordinarios que Quevedo había atribuido al valentón en su comedia.
La buena vida de los padres de la Compañía
Authors: Herrera Arnulfo
Published: July 2024

Este artículo describe la vida cómoda que supuestamente llevaban los jesuitas en los Siglos de Oro de la cultura hispánica, especialmente los jesuitas de la Nueva España. La descripción se hace a través de documentos y coplas satíricas que circulaban entre la gente para ofrecer tanto la perspectiva culta como la impresión popular sobre aquellos sacerdotes que acumularon una enorme cantidad de riquezas materiales.
Психоаналитический аспект идентификационных стратегий Андрея Ширяева. Трансгрессия культурных кодов русской, казахской и латиноамериканской культур
Authors: Фокина Светлана Александровна ,   Одеський нацioнальний унiверситет, Україна
Published: July 2024

In article research is directed to studying the dialogue of A. Shiryaev with a tango phenomenon as semiosis of passion and the Argentinian culture. During the analysis there has been tracked the process of mythologization by poetic consciousness of the poet emigrant of the history of tragic death of the legendary tango performer Carlos Gardel. Reading of author’s connotations is presented to interpretations of an image of the female phantom – madame Ivonne. The basics of psychoanalysis shed light on the poetic text of A. Shiryaev through the prism of the poet’s consciousness and subconscious, respectively, the identification of both Freudian patterns and Jungian archetypes.
Analiza językowo-kulturowego świata zesłańców syberyjskich na podstawie monografii Eugenii Kucharskiej Sybir w obrazkach
Authors: Bator Oliwia ,   Uniwersytet Szczeciński
Published: July 2024

The Article consists of an analysis of the linguistic and cultural world of Siberian exiles. The work was prepared on the basis of the monograph Sybir w obrazkach by Professor Eugenia Kucharska, who spent her childhood in distant Kazakhstan. In the description I have adopted the cultural method, which allows to report on the multidirectional aspects of the problems of life in Siberia, and the linguistic method, in which I have taken into account the issue of the interference.
Казахские термины родства в русскоязычных СМИ Казахстана
Authors: Смирнов Иван ,   Uniwersytet Łódzki
Published: July 2024

The article presents Kazakh kinship terms that are actively used in the Russian-language media of Kazakhstan. An extensive network of family relationships maintains a hierarchy between relatives and influences the social status of each participant. In the Russian-language media space, a small part of Kazakh words related to family ties is represented. It is worth noting that the examples given in the article are in most cases used in Internet sources and are less common in the official press. The process of morphological transformation concerns every lexeme of kinship in the Kazakh that is actively used in the Russian.
Smart charging process development based on ant colony optimization machine learning for controlling lead-acid battery charging capacity
Authors: Muslimin Selamat , Nawawi Zainuddin , Suprapto Bhakti Yudho , Dewi Tresna
Published: July 2024

The Indonesian government has targeted 2.1 million two-wheeled electric vehicles and 2,200 four-wheeled electric vehicles (EV) by 2025. This is hampered by limited electricity supply and EV charging, which takes long time. Multi device interleaved DC-DC bidirectional converter has been applied and assessed as the most suitable method for battery EV and plug-in hybrid EV because it produces high power >10 kW. For power below 10 kW, it is recommended to use a sinusoidal, Z-Source, and boost amplifier type converter. The smart charging (SC) system will be applied to electric vehicles, which only require a minimum charging power of around 169 W for four lead acid batteries. This paper focuses on an SC system that is capable of charging the battery quickly while still paying attention to the state of health (SoH) of the battery. The SC developed uses a DC-DC boost converter to increase the voltage produced by the switch mode power supply (SMPS). Estimated charging time is less than 30 minutes and still pay attention to the battery SoH. SC will also use pulse width modulation (PWM) as a duty power cycle regulator. This research applies a multi-layer perceptron (MLP) classifier to a neural network (NN). The results of the research show that smart charging can charge up to 600 W with an estimated charging time of around 11 minutes. The charging condition is above 60 % and the power duty cycle setting is 100 %. The power estimation results processed using the ant colony optimization (ACO) based neural network method show a root mean square deviation value of 0.010013430 for charging four lead acid batteries. These results are useful to help solve the problem of capacity requirements and battery charging speed for EVs, with good SoH
Identifying enhancement of double slope solar still performance by adding water cooling to walls
Authors: Ismail Nova Risdiyanto , Suwandono Purbo , Hermawan Dadang , Anggraeni Frida Dwi
Published: July 2024

The object of this research is a double-slope solar still with the addition of water cooling on the wall (DSSS.WCW). The issue with solar stills is that the temperature of the cover glass is quite high, which consequently reduces the rate of evaporation. Methods to reduce the cover glass temperature involve water cooling, by flowing water and spraying it onto the cover glass. Both of these methods have been shown to reduce the temperature of the cover glass, but they still require additional energy and can decrease the solar radiation energy received by the absorber plate. This research proposes using a water cooling method on the wall that does not require additional energy and can prevent a reduction in the solar radiation energy received by the absorber plate. Experimental and theoretical research was conducted to study the effect of using DSSS.WCW. The results showed a 13.48 % reduction in the cover glass temperature, consequently increasing the temperature difference between the fins and the cover glass by 9.82 °C. The increase in temperature difference resulted in a 13.82 % increase in freshwater productivity theoretically by 2.80 kg/hour and a 13.10 % increase experimentally for the DSSS.WCW by 2.58 kg/hour. In addition, there was a theoretical increase in energy efficiency of 22.29 % and an experimental increase of 22.82 %, along with an increase in exergy efficiency of 15.71 %. The implementation of water cooling on the wall has been shown to enhance the efficiency of the double-slope solar still. In addition, the water cooling method on the wall does not reduce the solar radiation energy that can be received by the absorber plate and does not require additional energy. The results of this research can be applied in remote islands in Indonesia, particularly during the dry season
Substantiating the rational shape of a drum-type working tool for surface soil treatment
Authors: Nesvidomin Andrii , Pylypaka Serhii , Ruzhilo Zinovii , Volina Tetiana , Liannoi Yurii , Botvinovska Svitlana , Zakharova Irina , Savchenko Lidiia , Savchenko Oleksandr , Rybenko Irina
Published: July 2024

The working bodies of agricultural implements should minimize resistance to movement. The shape of a curved tooth, which is fixed between two cylindrical disks, has been considered in this paper. Several such sections on the shaft form a drum similar to a harrow roller or a needle harrow. When rolling, the tooth sinks into the soil, followed by its loosening. The task was to find such a shape of the tooth, which at the first stage of immersion in the soil would slide over it as much as possible with minimal deformation, and at the second stage would balance it and turn it over.
The object of the study is a drum-type working body. The work of a straight tooth with its transformation into a curved tooth was analyzed. As a result of such an analysis and subsequent search, a rational shape of a drum-type tillage working body was obtained for the purpose of reducing resistance when it is buried in the soil. The involute of a circle turned out to be such a curve. A tooth in the form of an involute of a circle has a peculiarity: at the moment of contact of the tooth with the ground, the absolute velocity vector is directed perpendicular to it. The result is explained by the fact that as the disks roll, the tooth sinks into the soil, and the point of entry remains unchanged, and the tooth itself slides practically along itself, especially in the upper layers of the soil. In known working bodies, their curvilinear form was selected experimentally. The proposed shape of the working body was obtained analytically. To reduce the resistance of the teeth entering the soil, the ratio of the tillage depth to the radius of the drum is important. The immersion of the blade to the full depth should correspond to a 30° rotation of the drum. After diving to the maximum depth, it begins to weigh the soil to the surface or loosen it. The field of application of such a tooth shape can be the improvement of the working bodies of tillage implements
Using the set of informative features of a binding object to construct a decision function by the system of technical vision when localizing mobile robots
Authors: Sotnikov Alexander , Tiurina Valeriia , Petrov Konstantin , Lukyanova Viktoriia , Lanovyy Oleksiy , Onishchenko Yurii , Gnusov Yurii , Petrov Serhii , Boichenko Oleksii , Breus Pavlo
Published: July 2024

The object of this study is the process of constructing a decision function by the optical-electronic system of technical vision under the conditions of the influence of obstacles on the current image, which is formed in the process of localization of a mobile robot. The paper reports the results of solving the problem of constructing a decision function when reducing the signal-to-noise ratio of the current image by using a set of informative features for the selection of the binding object, namely, brightness, contrast, and its area. The selection of the binding object is proposed to be carried out by choosing the appropriate values of the quantization thresholds of the current image for the selected informative features, taking into account the signal-to-noise ratio, which provides the necessary probability of object selection. The dependence of the object selection probability on the selected values of the quantization thresholds was established. The use of the results could enable the construction of a unimodal decision function when localizing mobile robots on imaging surfaces with weakly pronounced brightness and contrast characteristics of objects, as well as with their small geometric dimensions. By modeling, the probability of forming a decision function was estimated depending on the degree of noise of the current images. It is shown that the application of the proposed approach allows selection of objects with a probability ranging from 0.78 to 0.99 for the values of the signal-to-noise ratio of images formed by the technical vision system under real conditions. The method to construct a decision function under the influence of interference could be implemented in information processing algorithms used in optical-electronic technical vision systems for the navigation of unmanned aerial vehicles
Determination of the influence of hemp oil-based emulsion systems composition on the oxidation products content during storage
Authors: Kunitsia Ekaterina , Popov Mykola , Gontar Tatiana , Stankevych Serhii , Zabrodina Inna , Stepankova Galyna , Zolotukhina Olena , Filenko Olesia , Novozhylova Tetiana , Nechyporenko Dmytro
Published: July 2024

The object of the study is the content of antioxidants and the induction period of accelerated oxidation under simulated conditions of the lipid component of the emulsion system. The way to solve the problem of developing compositions of oxidation-stable emulsion systems based on nutritionally valuable oils, in particular hemp oil, by adding natural physiologically active antioxidants is considered. The research is relevant in the context of finding effective storage methods and extending the shelf life of products using hemp oil. The feature of the work lies in determining the influence of the composition of emulsion systems based on hemp oil on chemical oxidation during storage. The content of stabilizers in the hemp oil emulsion system (lecithin – 0.8...1.0 %; xanthan gum – 0.0...0.1 %) is proposed, which is effective in the inhibition of oxidative spoilage. The content range of β-carotene (0.012 %) in model emulsion systems is outlined, the addition of which increases the induction period of accelerated lipid oxidation by 1.58...2.08 times. The peroxide value of the lipid component of the emulsion system during storage at different temperature conditions (0...15 °C) and during different storage periods (15...60 days) was studied.
The results of the study confirm the significant influence of the composition of emulsion systems on the chemical oxidation of the lipid component, which is important for ensuring the quality and stability of food, pharmaceutical and cosmetic products. An applied aspect of the obtained scientific result is the possibility of modeling the composition of emulsion systems based on valuable hemp oil depending on the ratio of polyfunctional antioxidants of the oil component
Optimization of cross-sectional dimensions of castellated beams with hexagonal openings
Authors: Yurchenko Vitalina , Peleshko Ivan , Rusyn Pavlo
Published: July 2024

The object of this study is a castellated beam, in which the web openings have the shape of a regular hexagon. The beam is examined to find optimal cross-sectional dimensions. The optimization task is stated as the task of finding the optimal profile numbers for top and bottom Tees of the beam and the optimal width of the web opening while ensuring the required load-carrying capacity of the beam. Minimization of the volume of the beam material was considered as an optimality criterion. The stated optimization problem was solved using the exhaustive search method. For an assortment of normal I-beams with parallel flanges, castellated beams were obtained with optimal cross-sectional dimensions depending on the steel grade, the beam span, and the magnitude of transverse uniformly distributed load. The optimization calculations proved that it was possible to increase the elastic section modulus of the beam to 35.48...50 % through the use of a castellated web. Castellated beams with optimal cross-sectional dimensions at the same load-carrying capacity are characterized by lower steel consumption (up to 23.19 %) compared to I-beams with a solid web. Analysis of the results has made it possible to devise recommendations for the optimal distribution of material in the cross-sections of such beams. The results are valid only for the assortment of normal I-beam profiles and only for the case of uniformly distributed load acting on the beam when the compressed beam flange is laterally restrained from the bending plane and the beam web has openings in the form of regular hexagons. It is under such conditions that the reported results can be implemented in practice both at the stage of selecting cross-sections of the studied class of structures, and at the development of effective assortments of castellated beams
Construction of a network intrusion detection system based on a convolutional neural network and a bidirectional gated recurrent unit with attention mechanism
Authors: Nikitenko Andrii , Bashkov Yevhen
Published: July 2024

The object of this study is the process of recognizing intrusions in computer networks. Network intrusion detection systems (NIDS) have become an important area of research as they are used to protect computer systems from hacker attacks. Deep learning is becoming increasingly popular for detecting and classifying malicious network traffic, including for building NIDS.
In this paper, we propose a network intrusion detection model CNN-BiGRU-Attention based on a time-based approach to deep learning using the attention mechanism. The main goal of the study is to build an effective combined deep learning model that can detect various network cyber threats.
A 1D convolutional neural network is implemented to extract high-level representations of intrusion information features. A bidirectional gated recurrent unit (BiGRU) with an attention mechanism for traffic data classification has been designed. The attention mechanism plays a key role in the constructed model as it allows the system to focus only on important aspects of network traffic and allows the model to adapt to new types of threats.
The results of the study show that using a combination of CNN and BiGRU with the attention mechanism speeds up and improves the process of classifying network attacks. On the NSL-KDD and UNSW-NB15 training datasets, the model shows an accuracy of 99.81 % and 97.80 %. On the NSL-KDD and UNSW-NB15 test datasets, the model demonstrates 82.16 % and 97.72 % accuracy.
The proposed NIDS model will be considered for implementation in a real-time corporate network security system.
In general, the results of the study provide a new perspective on improving the performance of NIDS and are quite relevant in terms of using attention mechanisms to classify network traffic
Development of a model of the information and analytical system for making decisions on detecting failures of information transmission channels
Authors: Shmatko Olexander , Yevseiev Serhii , Milov Oleksandr , Sporyshev Kostyantyn , Opirskyy Ivan , Glukhov Sergey , Rudenko Yevhen , Nalyvaiko Andrii , Dakov Serhii , Sampir Oleksandr
Published: July 2024

The object of the research is the channels of information transmission during the control of the information-analytical decision-making system. The development of high technologies and computing capabilities ensures the evolutionary development of smart technologies and socio-cyber-physical systems on the one hand. On the other hand, it forms the integration of targeted (mixed) attacks with the possibility of integration with social engineering methods. In addition, mobile technologies significantly increase the possibilities of data transmission speed. However, this only provides the authentication service, which does not provide a full range of security services. Under such conditions, an urgent task at the decision-making stage is the use of auxiliary systems that ensure the adequacy of decisions and the promptness of their adoption. The proposed mathematical model of the information and analytical system allows to calculate the main technical characteristics of information transmission channels and identify their possible failures. The use of an information and analytical system simplifies the decision-making process, allows to increase the reliability of such decisions due to an increase in the level of automation. Increasing the level of automation in the decision-making process removes subjective factors and the decision depends on the availability of information. Therefore, the reliability of the information transmission channels of the information and analytical system significantly affects the quality of the decisions made. The developed model allows to ensure the required level of reliability of information transmission channels. The obtained results are explained by determining the dependence between the parameters of the information and analytical system and their influence on the quality of information transmission through channels. The results of the study can be used in practice when considering systems with a limited number of states during operation
Assessing the possibility of using a variable-length launch vehicle with a polymer body for orbiting payload
Authors: Golubek Aleksandr , Aleksieienko Serhii , Dron Mykola , Dreus Andrii
Published: July 2024

The object of this study was the motion of an ultralight class variable-length launch vehicle made of a polymer body along the active phase of the trajectory. The work considers the solution to the problem of designing low-cost means of delivery to orbit, namely to the assessment of the possibility of removing the payload by a carrier rocket with a polymer body of variable length beyond the dense atmosphere of the Earth. For this purpose, ballistic projection of the trajectory of the launch vehicle was carried out taking into account overloading; its aerodynamic characteristics and peculiarities of aerothermodynamic processes occurring during flight in the atmospheric phase of the trajectory were determined. The closeness (up to 10 %) of the obtained results with known experimental data is shown. The influence of the aerodynamic force on the parameters of the launch vehicle motion was studied. A flight simulation was conducted, the results of which showed the fundamental possibility of launching a CubeSat 24U class payload using a launch vehicle with a polymer body of variable length to a suborbital trajectory with an altitude of about 300 km. At the same time, the effective longitudinal overload on the body of the launch vehicle does not exceed 4 units, and the temperature on the surface of the body does not exceed 300 K. A feature of the research is the use of a multidisciplinary approach, which implies taking into account the interrelationship of aerodynamic, thermodynamic, and ballistic processes. The established motion parameters, aerodynamic characteristics, and the surface heating temperature of the launch vehicle body are key values for further research on the design and analysis of a launch vehicle with a polymer body of variable length. These data could be used to calculate the mechanical and thermal loads acting on the structure of the launch vehicle during flight
Improvement of fiber optic sensor measurement methods for temperature and humidity measurement in microelectronic circuits
Authors: Khabay Anar , Baktybayev Murat , Ibekeyev Serikbek , Sarsenbayev Nurlan , Junussov Nuridin , Zhumakhan Nurzhan
Published: July 2024

A wide range of applications such as healthcare, human comfort, agriculture, food processing and storage, and electronics manufacturing also require fast and accurate measurement of humidity and temperature. Optical fiber-based sensors have several advantages over electronic sensors, and much research has been conducted in this area in recent years. This paper describes the current trends in fiber optic temperature and humidity sensors. The evolution of optical structures aimed at humidity detection is presented, as well as a new design of an optical sensor used for this purpose.
The main methods of humidity determination using fiber-optic laser reflection based on Optical fiber humidity sensor (FPI) were analyzed and experimental results were obtained. Based on temperature-sensitive strain variation, a method for temperature determination based on the specific spectral back-reflection effect of fiber Bragg gratings (FBGs) is considered. Experimental analyses were conducted on the light reflection of humidity-sensitive agarose using optical fibers based on the Fabry-Perot Interferometer (FPI). It exhibits a good linear response to relative humidity, ranging from 25 % to 95 %. During temperature measurement, the deformation changes of the Fiber Bragg Grating fibers showed excellent performance, ranging from –5 °C to 70 °C.
New structures, such as resonators, are being explored to improve the resolution of fiber optic temperature and humidity sensors. In addition, recent studies on polymer optical fibers show that the sensitivity of this type of sensor has not yet been achieved. Thus, materials sensitive to humidity and temperature still need to be investigated to improve sensitivity and resolution
Development of quantum computing algorithm of technology for monitoring learning results
Authors: Yesmagambetova Galiya , Aktayeva Alimbubi , Kubigenova Akky , Ismukanova Aigerim , Fomichyova Tatyana , Zhartanov Seilkhan , Daurenova Aidyn
Published: July 2024

The present publication considers implementing an online control proctoring system, with the possibility of using methods and models of pattern recognition using algorithmic quantum computing to conduct online exams. The study's object is the protection method within infrastructure proctoring systems in education. The study aims to create a security system for proctoring technology infrastructure in education. The article proposes an alternative approach to building protection systems with an effective recognition model using algorithmic quantum computing in proctoring platforms. This study addresses these issues and proposes a novel approach to generating a random cryptographic key using multimodal biometric technology. A presented quantum algorithm method for computer simulation of the data processing quantum principles allows studying and analysing how the created model for transforming a classical image into a quantum state works. This method also shows the possibilities of quantum information theory in interpreting classical problems or how to optimise the same, taking into account the development of methods for the functioning of models and algorithms for quantum computing, data protection and security of online video communications in a proctoring system in an educational environment. The novelty of this research is expressed primarily in the constant updating and addition of authentication systems using quantum computing in various aspects, including the proctoring system in the educational environment. Also, scientific novelty is associated with insufficient similar research in the information space. The practical significance is due to the need in the current situation to attract attention to existing problems in structuring the infrastructure of a monitoring system within planning and coordinating the protection, thereby enhancing learning outcomes by eliminating security flaws using a quantum computing algorithm for pattern recognition
Synthesis of NiCrAlY nano-scale powder by high-energy ball milling process for thermal spray coating application
Authors: Pratiwi Irma , Ardy Husaini , Prawara Budi , Ramdan Raden Dadan , Muttaqien Fahdzi
Published: July 2024

These days, during the issues of climate change, there has been a shift in the energy industry from using fossil fuels to more environmentally friendly fuels such as biomass fuels. Biomass fuel is considered CO2 neutral because the carbon produced during combustion in the form of CO2 emissions can be used for new plant growth. However, besides the advantages of using biomass fuel, a problem arises when biomass fuel contains a high concentration of corrosive agents, which can be released along with hot fuel gas. These corrosive agents can damage the boiler components. Coating technology is one of the solutions to protect components that work at high temperatures against the corrosion threat. One type of coating that can be used in high-temperature applications is NiCrAlY coating by the high-velocity oxide (HVOF) process. One interesting topic that people are developing is using nano-scale coating to increase the coating’s resistance against hot corrosion and cracking. Nano-scale powder feedstock is needed to produce nano-scale coating material. In this research, top-down method is used to synthesis nano-scale powder. One of top down method, the high-energy ball milling processs, is a promising method to synthesize nano-scale powder material. Therefore, in this research, the ball milling process is used to prepare nano-scale product. The results showed that this method was successful to make the nano-scale powder. The nano-scale powder was characterized by several methods to investigate the morphology and properties of the powders. However, there are still many challenges in producing nano-scale powder that meets HVOF feedstock powder requirements. In the long run, it is expected that this research can answer those challenges so that at the end, the good quality of nano-scale powder can be achieved
Study of the effect of ethanol on the properties of poloxamer 338 solutions by rotational viscometry and spin probe method
Authors: Liapunov Oleksii , Bezuglaya Elena , Liapunova Anna , Lysokobylka Oleksii
Published: July 2024

The aim. Study the properties of 20 % solutions of poloxamer 338 (P338) in water and mixed solvents water-ethanol using rotational viscometry and the spin probe method at various temperatures.
Materials and methods. 20 % m/m solutions of P338 in water and water – ethanol mixtures were the objects of research. The solutions were studied by rotational viscometry at various temperatures; the flow behaviour, lower yield stress (t0) and dynamic or apparent viscosity (η) were determined. Spin probes based on fatty acids, which differ in molecular structure, solubility, and radical localization, were added to the solutions. Electron paramagnetic resonance (EPR) spectra were obtained to determine their type and parameters.
Results. Depending on the content, ethanol affects the rheological properties of 20 % solution of P338. The solution was demonstrated to be able to thermally induce sol → gel transition at 32 °C when ethanol content is 5 % m/m. The rheological parameters of the gel at 32 °C and 37 °C exhibit an increase (in comparison to the gel without ethanol), accompanied by a reduction in the packing density of polypropylene oxide (PPO) chains within the cores of P338 micelles. At an ethanol content of 10 % m/m, the gel formation temperature rises to 40 °C. At ethanol content of 15 % m/m and above, 20 % P338 solutions do not form gels at temperatures between 25 °C and 40 °C. The values of rotational correlation times (τ) and the order parameter (S) of fatty acid-based spin probes were observed to decrease with increasing ethanol content up to 30 % m/m; in the case of the ammonium salt of 5‑doxylstearic acid (5-DSA NH4 salt), the anisotropic EPR spectra transform, becoming a superposition of two triplets and subsequently a triplet. P338 solutions retain their ability to undergo thermally induced sol ↔ gel transitions as long as the EPR spectra of this probe exhibit anisotropy at temperatures ranging from 25 °C to 37 °C. As the concentration of ethanol in the solution increases, the solvation of the cores of P338 micelles by the dispersion medium of the solution also increases.
Conclusions. It was demonstrated that ethanol, when added to the 20 % P338 solution, results in changes to the rheological properties of this solution. However, at the ethanol content of 5-10 % m/m, the ability of P338 to thermally induce sol → gel transition remains unaltered. The rheological properties of the 20 % P338 solution exhibit a correlation with the observed change in EPR spectra types for the 5-DSA NH4 salt. As the ethanol content in the solution increases, the solvation of P338 micelle cores by the dispersion medium increases, accompanied by decreased density and orderliness of the PPO chains packing in the micelle cores
Comparative analysis of the "human - AI" system
Authors: Zaluthets Ostap
Published: July 2024

The article highlights the historical foundations of the emergence of information systems that led to the creation of artificial intelligence (AI) in the context of technological development processes, and provides definitions of key concepts. To better understand the essence of the article, through comparative analysis, the views of prominent contemporary figures on the development of artificial intelligence and the diversity of opinions regarding the application of innovative technologies are elucidated. The detachment from reality is observed in both optimistic and pessimistic forecasts due to the lack of scientific substantiation. The diversity of opinions is explained by the fact that most scientists focus on specific aspects (business, politics, physics, neurobiology), rather than on the specific technology of artificial intelligence. The article reveals the ambivalence of views of different groups of experts on the impact of the implementation of new technological processes. Sociologists, historians, and philosophers perceive these technologies with caution, assessing their impact on society and the individual, while companies developing new technologies often exaggerate their significance to promote their products. The right decision would be to unite many fields to achieve a common goal - creating the desired future of the "human-AI" system. Bringing together different sciences (philosophy, psychology, law, physics, mathematics, biology), exchanging experiences, and creating specialized organizations, institutes can help change the polarization of views and find answers to questions that have already arisen and may arise in the future. The activities of research organizations that will explore aspects of technological progress should perform a unifying function between opposing views, balancing the process of hybridization of the real and virtual worlds. The question of the impact of artificial intelligence on the future of humanity remains open. Fruitful cooperation between humans and machines looks promising and requires the correct setting of goals and regular monitoring of the process of this system, understanding the significance of new technologies. The author emphasizes the importance of addressing these issues, as the development of technologies is constantly growing and leaves no time for controversy
Systems of linear equations and the theory of divisibility in the structure of mathematical competence of a chemistry teacher
Authors: Kirman Vadym , Nekrasova Maria
Published: July 2024

This article is dedicated to the analysis of the role of linear algebraic models and related divisibility theory issues in the mathematical activity of a chemistry teacher. The work has investigated the place and informational-logical connections of linear algebraic models in the system of mathematical competence of a chemistry teacher and has justified its significance. Examples from the school chemistry course have been given, where systems of linear algebraic equations have been actively used both over the field of real numbers and over the ring of integers. Various scenarios for solving problems, in fact reduced to linear algebraic models, have been illustrated. Such tasks have included classic problems with many reagent components as well as setting coefficients in complex chemical equations. The advantages and disadvantages of synthetic methods using chemical reasoning and formal algebraic methods have been analyzed. It has been substantiated that the teacher needed to understand the mathematical essence of the corresponding models to generate any solution and guide the students' corresponding work. The possibility of applying the basics of number theory in teaching chemistry has been shown. An analysis of the possession of relevant mathematical skills of working chemistry teachers has been conducted. Approaches were developed to improve the level of chemistry teachers’ skills of solving and analyzing systems of linear equations with real and integer variables in the conditions of postgraduate pedagogical education of teachers.
The results, obtained in the work, have shown the need for an analysis of mathematics curricula in pedagogical and classical universities, sections related to linear algebra, as well as the introduction of the basics of number theory into mathematics curricula. The need to introduce mathematical training into the system of advanced training of chemistry teachers has been proven. Possible further research on this topic is related to the active implementation of blocks of linear algebraic models into the courses of advanced training of chemistry teachers and further analysis of their effectiveness