bluuebunny/crossref_metadata_2025 huggingface dataset:
Enseñanza del urbanismo desde una perspectiva social y feminista. Experiencias docentes y conflictos comparados
Authors: Pérez Rincón María del Socorro
Published: February 2023

Este artículo pretende un aporte pedagógico a la enseñanza del urbanismo, alertando sobre su deriva neoliberal. El objetivo es identificar los retos en la enseñanza del urbanismo y la planificación desde una perspectiva social y feminista. En primer lugar, se propone una crítica del neoextractivismo y el papel de los megaproyectos en la economía neoliberal e imperialista. En segundo lugar, se expone la metodología y el trabajo pedagógico de dos experiencias de innovación docente que comprometen al estudiante a investigar y reflexionar sobre conflictos territoriales, para identificar las voces marginadas, aplicar la teoría e incorporar la perspectiva de género con el objetivo de deconstruir los discursos de la planificación neoliberal. Partiendo de las experiencias del urbanismo comparado, anotamos en un atlas global los conflictos extractivistas y las resistencias que provocan.  Concluimos en la necesaria transformación de la disciplina desde su enseñanza, priorizamos la dimensión social y analizamos el impacto de los megaproyectos. Se evidencia lo imprescindible de impulsar nuevas líneas de investigación comprometidas con la dimensión ética y de los cuidados.
Propuesta curricular para la enseñanza del ecourbanismo
Authors: Ghysais Chadid Guillermo Alfonso , Albis Romero María Cristina , Sierra Franco Angelica María
Published: February 2023

El presente artículo tiene por objetivo exponer los ejes metodológicos para la construcción de una propuesta curricular y su énfasis temático en la enseñanza del ecourbanismo en el Programa de Arquitectura de la Corporación Universitaria del Caribe.  Lo anterior con el fin de responder a la pregunta: ¿qué aporta incluir en los estudios urbanos-regionales el contexto actual de la realidad latinoamericana y del Caribe con los fundamentos del enfoque ecosistémico en la enseñanza del urbanismo? Así, se inicia desde el aseguramiento de la calidad de los programas de arquitectura asociada a las prácticas curriculares del componente de urbanismo, como objeto de reflexión constante a partir de los fundamentos teóricos que involucran el aprendizaje de la urbanística internacional, sus procesos de conformación conceptual y su confrontación con las acciones plasmadas en contextos de territorios específicos, que exigen un debate a la luz de las realidades ecológicas, medioambientales, históricas y socioculturales de los lugares de estudio e intervención.  Los resultados dan cuenta de la discusión del paso consciente del desarrollo competitivo hacia el desarrollo sostenible en las visiones de ciudad como alternativa para la reflexión, construcción estratégica, diseño de proyectos y capacidades de gestión de los territorios en el Caribe colombiano.
Main Factors that Explain Organic Food Purchase Intention: A Systematic Review
Authors: Leyva-Hernández Sandra Nelly , González-Rosales Virginia Margarita , Galván Mendoza Oscar , Toledo-López Arcelia
Published: February 2023

This study sought to understand the factors behind the intention towards buying organic products mentioned in the existing literature and provide conceptual and theoretical guidelines for future research on the subject. A systematic revision of original research papers included in Scopus and Web of Science databases during the period 2011-2021 was conducted, resulting in a sample of 162 articles. The results show that the attitude, values, and confidence of the consumer were the main factors in the intention to buy organic foods. Moreover, it was found that the theory of planned behavior was the most used theoretical framework in the analysis of organic foods purchasing. The changes brought by the covid-19 pandemic are manifested in consumers’ values and their implications to the sale of this type of foods. We propose to consider consumers’ values as variables that intertwine the rational and motivational approaches to consumption analysis. It is also proposed to understand the purchase intention underlying the stimulation of attitudes and the confidence of consumers due to their values. Finally, it is suggested to consider the analysis of the mediating effect of attitudes and trust in the relationship between values and purchase intention.
Getting Past the Crisis: Marketing Communication of University Sustainability
Authors: Osuna Ramírez Sergio Andrés , Escobar Sierra Manuela
Published: February 2023

Higher education institutions (heis), especially during the pandemic crisis, have faced the challenge of designing a sustainable competitive advantage strategy to attract and retain students. However, since constructing a sustainable brand requires successfully building its legitimacy, sustainability messages must be presented appropriately by using suitable communication channels, such as social networks, that attract younger generations of students and become the only form to communicate with them during the confinement. Hence, this paper investigates if Colombian heis effectively use marketing communication tools to inform their sustainability strategies. For this purpose, a literature review of the terms “university sustainability” and “marketing” was initially conducted, applying a mixed-methods approach. Then, an exploratory analysis with the web scraping technique that considered Facebook® messages posted by five private heis in Medellín city (Colombia) was developed during a ten-month period. Finally, an examination approach was applied to summarize data, find hidden relationships, and make predictions through Python programming language. Despite good intentions and reasonable efforts, results indicate that heis do not seem to have a systematic strategy for communicating sustainability issues. Instead, they give the impression of managing sustainability issues mainly from an economic point of view. As a result, universities’ communication of sustainable practices that enhance institutional reputation and increase student retention still appears to be sporadic and insufficient.
Influencia de los marcos promocionales de ganancia en las decisiones de compra de consumidores de detergente en tienda online: un aporte experimental en el canal de la COVID-19
Authors: Bermudez Sosa Herbert Jair , Duque-Oliva Edison Jair
Published: February 2023

La pandemia por covid-19 ocasionó cambios en los hábitos de consumo, siendo uno de los principales la digitalización de la compra, ya que los confinamientos obligaron al abastecimiento en tiendas online, así como surgieron cambios en la forma de comprar productos y percibir promociones e incentivos. Por este motivo, es importante estudiar cómo los marcos promocionales de mayor uso y preferencia influyen al momento de realizar compras online. Así, se realizaron dos ejercicios experimentales para analizar las preferencias frente a diferentes tipos de promociones de productos en la categoría detergentes de ropa, para lo cual se reunió a 61 personas sometidas a una agrupación de cuatro promociones de venta, analizando su intención de compra. Los resultados mostraron que marcos promocionales de ganancias tienen efectos incrementales en la intención de compra, evidenciando heurísticos de disponibilidad en el proceso de decisión, además de preferencia por las que incluyeron regalos o agregados al producto. Estos hallazgos permitirán a las marcas organizar mejor su estrategia promocional online y tener mejor concordancia con los hábitos de compra online en la pandemia por covid-19, además de ampliar el conocimiento teórico en procesos de decisiones de compra. El ejercicio podría ampliarse a otras tipologías de promoción y categorías de conveniencia no contempladas en el presente estudio.
Media Coverage of Carbon Neutral Organizations in Costa Rica: Environmental Sustainability Practices and Consumer Recognition
Authors: Valenciano-Salazar Jorge A. , André Francisco J. , Rivero Carlos
Published: February 2023

This paper studies the visibility, environmental sustainability practices, and public recognition of Costa Rican organizations participating in the Carbon Neutrality (cn) Program. Through a review of Costa Rican online newspapers, we conclude that the three main actions performed by cn firms are the offsetting of carbon emissions, the replacement of polluting inputs by cleaner substitutes, and employees’ training. The main benefits perceived by these firms include reducing production costs, improving the organizations’ image, and achieving market differentiation. In addition, by using non-parametric statistic procedures, we conclude that “highly cited organizations” tend to achieve the cn certification earlier and have a larger number of environmental certifications than “scarcely cited organizations.” By analyzing newspaper coverage data in conjunction with a consumer recognition survey, we determined that “recognized organizations” tend to be the oldest, the largest, and the most cited in the press. In addition, “recognized entities” also tend to obtain the cn certification sooner than unrecognized entities, which means that there is a reward in terms of public recognition for companies that took the risk of being innovative in reducing their carbon footprint.
Efeitos da adoção da IFRS 16 — locações nas empresas cotadas no STOXX Europe 50
Authors: Antunes Joel , Morais Ana
Published: February 2023

A alteração da forma de contabilização das locações pela introdução de uma nova norma contabilística poderá ter implicações nas empresas, quer a nível contabilístico, quer na qualidade da informação empresarial e na economia real. O estudo tem como objetivo analisar os efeitos contabilísticos e ao nível da informação divulgada, e ainda identificar os efeitos reais esperados da adoção da ifrs 16, na perspetiva do locatário. Foram analisados os relatórios, as contas e as comment letters das empresas incluídas no stoxx Europe 50. Os resultados indicam que, a nível contabilístico, se verificou um aumento significativo no ativo, passivo e ebitda das empresas. Verificou-se também um aumento das divulgações. No que diz respeito aos efeitos da informação divulgada, a maioria das empresas concluiu que a ifrs 16 não melhora a tomada de decisão, devido à sua complexidade e aos ajustamentos que eram realizados antes da ifrs 16. Foram ainda apontados três efeitos reais esperados: os custos de implementação da norma; as alterações contratuais nos contratos de financiamento; e o desincentivo às locações. Este estudo é particularmente relevante para os emissores de normas contabilísticas, pois identifica os diversos efeitos, contabilísticos, de informação e reais que a adoção da ifrs 16 origina. Contudo, este estudo não analisa nem os efeitos reais efetivos, nem os de mercado de capitais resultantes da adoção da ifrs 16, e a amostra inclui apenas grandes empresas.
Prácticas de alto rendimiento y compromiso afectivo: el papel mediador de la cultura organizacional en pymes colombianas
Authors: Monsalve-Castro Carolina , Pardo-del-Val Manuela , Dasí-Rodriguez Sonia
Published: February 2023

En los últimos años ha cobrado importancia el efecto de las actitudes de los individuos en la productividad de la organización, razón por la que directivos han enfocado sus esfuerzos en consolidar una base de prácticas universales para promover mejores rendimientos. El fin de este artículo es analizar si la cultura organizacional cumple una función mediadora en la relación con prácticas de alto rendimiento y compromiso afectivo, distinguiendo entre las prácticas que dicen implantar los directivos y las percibidas por empleados. Se utilizan ecuaciones estructurales en una muestra de 601 individuos y 50 directores de recursos humanos en pymes de Colombia. Los resultados no permiten afirmar que las prácticas que dicen implementar los directores tengan un efecto positivo en el compromiso afectivo, mientras que las prácticas percibidas por empleados sí que impactan positivamente, comprobándose además la mediación de la cultura organizacional. Los hallazgos resaltan la importancia de medir la percepción de las prácticas en colaboradores, a la vez que aportan a directivos consideraciones acerca de cómo incrementar el compromiso afectivo. Esta investigación consolida un grupo de prácticas que a futuro permita comparar resultados en distintos contextos empresariales; además, concluye con la necesidad de desarrollar investigaciones longitudinales para ampliar el análisis de las actitudes en el desempeño de la empresa.
Marine litter in mangroves: composition, magnitude, and impacts
Authors: Vélez-Mendoza Anubis
Published: February 2023

Mangroves face a constant entry of marine litter that can alter their natural conditions to solid waste dumps, affecting the ecosystem, organisms, and humans. This work provides information on the main marine litter items and how their composition and magnitude can cause potential negative impacts. The research was carried out as follows: 1) a bibliographic review of the subject, 2) a collection of data in the field and 3) an adaptation of methodologies and international guidelines for the collection of marine litter. Analysis of information collected from environmental indices determined that: (a) the state of cleanliness and the likelihood of being affected by items considered hazardous, (b) a hierarchical and principal component grouping through the composition and magnitude of recorded marine litter, and (c) a sectoral analysis between the two environmental indices. Eleven sites of the fifteen studies evaluated, recorded high densities of marine litter with cleanliness rates between dirty and extremely dirty. These sites are mainly made up of plastic items, of which three sites registered a significant number of items considered hazardous. For this reason, a comprehensive, intelligent, and urgent management plan is required to base on strategies to reduce primary sources, through the adoption and improvement of measures such as education, good management practices, and citizen awareness. A greater number of studies is required for a clearer picture of the subject.
El cangrejo azul en el Caribe Colombiano, un estudio comparativo
Authors: Campos Néstor Hernando , Cardona A Luisa Francisca , Valencia O Felipe
Published: February 2023

El cangrejo azul de tierra Cardisoma guanhumi es una especie de interés comercial y está siendo sometida a extracción para el consumo humano. Se distribuye en todo el Caribe desde las Antillas hasta la parte sur en Venezuela y Colombia, con registros, también, en Brasil. Los primeros estudios sobre este cangrejo en Colombia datan de los inicios de la década 1970-1980, los cuales se enfocaban en aspectos ecológicos y biológicos. Los estudios poblacionales en el Caribe colombiano empezaron en el 2000 pero son escasos y algunos no están publicados. Para la isla de San Andrés, el Golfo de Urabá y el departamento del Magdalena se han realizado dos estudios. Para los tres sitios, uno se encuentra publicado y el otro no. De los no publicados, dos corresponden a trabajos de grado (Urabá y Magdalena) y el otro a un informe técnico (San Andrés). Para La Guajira, hay un artículo que menciona algunos aspectos sobre las poblaciones de este cangrejo. Para el departamento de Córdoba se tiene registro de dos tesis de grado. Para el departamento del Atlántico hay un informe técnico. Los departamentos Bolívar y Antioquia tienen tres estudios cada uno. La mayoría de estas investigaciones contienen información sobre las tallas y los pesos de los cangrejos, y en algunos también es posible evidenciar información sobre la densidad poblacional a través del conteo de madrigueras. En la isla de San Andrés se han registrado las mayores tallas y pesos en promedio. Las mayores densidades poblacionales promedio se han registrado para Bahía Concha en el departamento del Magdalena y las menores para el departamento de Bolívar en el Corregimiento de La Boquilla.
Review of foraminifera methodologies related to hydrocarbon seeps on the ocean floor: implications for the Colombian Caribbean
Authors: Puerres Lizeth Y. , Barragán-Jacksson Camila María , Bernal Gladys
Published: February 2023

In the last decade, the marine seeps of hydrocarbon-rich fluids, mainly methane, have been studied from the shells of recent calcareous foraminifera and fossils. This group of organisms may be abundant in seepage habitats, and no indicator species have been found on these environments, even though related associations and changes in diversity and isotopic composition have been observed. In this review, we compile and describe the different methodologies of the study of foraminifera in cold filtration systems that have been used in both surface and subsurface sediments. The analysis and discussion of the information allowed us to conclude through the results and the effectiveness of the use of foraminifera as indicators depend not only on the used methodologies, but also on its limitations. In addition, based on the information obtained, a possible methodology for the Colombian Caribbean was proposed, identifying its technological limitations.
volteoLab: programa computacional para la modelación de inestabilidad por volcamiento en cortes de talud en carreteras
Authors: Erazo-Martínez Luis Alejandro , Suarez-Burgoa Ludger O.
Published: February 2023

El programa computacional para la modelación de la falla por volcamiento en dos dimensiones (2D), llamado volteoLab, permite interpretar el modo de falla tipo volcamiento (toppling en inglés) de un conjunto de bloques de roca en un talud de carretera bajo el análisis de cargas de contacto y fuerzas gravitacionales en un marco de análisis. VolteoLab ha sido realizado a partir del método de equilibrio límite. En este método se plantea el cálculo de fuerzas del peso de cada bloque de estudio y las fuerzas de fricción en la base de los mismos (i.e. las fuerzas de resistencia mecánica al corte y la normal al plano de apoyo de los bloques). Por otra parte, se usa el concepto de coeficiente de transferencia (𝜓𝜓) que relaciona las componentes de las fuerzas gravitacionales con la posición espacial de cada bloque con relación a un bloque guía de ubicación estratégica (denominado bloque de cresta y con un índice de ubicación en este texto denotada como m) cuyo significado físico divide al talud de análisis en dos zonas: la zona de corte y la zona de corona. Con el coeficiente de transferencia y la ubicación del bloque de cresta es posible identificar las partes vulnerables del talud y en especial es posible tener un valor numérico de otra variable que definirá la estabilidad global del talud, que es una fuerza horizontal en la pata del mismo denominada aquí como fuerza de anclaje (P). Si esta fuerza es negativa, el talud es estable y si.
Pedagogía de las emociones como aporte a una educación emancipadora y con justicia social
Authors: Pineda Edgar , Orozco Pineda Paula Andrea
Published: February 2023

Se tiene como objetivo presentar la interpretación de hallazgos cualitativos de cuatro investigaciones sobre la pedagogía de las emociones; en particular, se centra la reflexión en dar cuenta de las presencias y ausencias de las emociones en los proyectos educativos de países de Latinoamérica y el Caribe. Se asume una perspectiva teórica que considera que las emociones son políticas, intersubjetivas y cognitivas; se hace un distanciamiento de los paradigmas dualistas de emoción-razón que han predominado en la educación latinoamericana, y se hace un llamado a una presencia de una pedagogía de las emociones que rescate preceptos filosóficos de pueblos originarios.
Prácticas de reciprocidad en comedores comunitarios: entre el amor, la confianza y la esperanza
Authors: Sordini María Victoria
Published: February 2023

La organización colectiva del comer se sostiene en la tensión permanente entre el solidarismo filantrópico y las prácticas de reciprocidad de quienes participan a diario en el comedor. El objetivo es identificar las emociones vinculadas a las prácticas de reciprocidad que despliegan las mujeres que participan en comedores comunitarios en General Pueyrredón en el periodo 2015-2020. Los cuerpos/emociones de las mujeres entrevistadas resisten las desigualdades y a la necesidad alimentaria desde hace más de tres décadas. Las prácticas que despliegan desde el amor, la confianza y la esperanza como posibilidad de encuentro con los(as) otros(as) implican una mirada común sobre los horizontes de acción posibles y deseables.
Investigation of discrete analogue of one boundary problem of optimal control
Authors: Agamaliyeva A. I
Published: February 2023

In the paper, one boundary value problem of optimal control for discrete two-parameter systems with discrete time is investigated. Such problems are discrete analogues of optimal control problems described by integro-differential partial differential equations of the first order. The initial function is controllable and is defined as the solution of the Cauchy problem for nonlinear ordinary difference equation, the right part of which includes concentrated control. The quality functional presents the sum of two different terms and is a Boltz type functional for the optimal control problem under consideration. The cases of arbitrary, convex and open control area defining the corresponding class of admissible controls are studied. Imposing various natural smoothness conditions on the right-hand sides of the two-dimensional and one-dimensional difference equations under consideration, assuming the convexity of the analogue of the set of admissible velocities of the system under consideration, a special increment of the quality criterion is calculated using a modified functional increment method and, based on its non-negativity along the optimal control, an analogue of the discrete Pontryagin maximum principle is proved. Assuming the convexity of the control area, by linearizing the terms in the functional increment formula and introducing a special variation of the admissible control, an analogue of the linearized maximum condition is proved. In contrast to the continuous case, the linearized maximum principle is not a consequence of the discrete maximum principle and has an independent value as a necessary condition for optimality. In the case of open control area, by introducing a classical variation of the control, the first variation (in the classical sense) of the functional is calculated and established that in the case of open control area, the first variation of the quality criterion equals zero, with its help, an analogue of the Euler equation for the optimal control problem under consideration is obtained. The scheme used in the work also makes it possible to further investigate some cases of degeneration of the obtained necessary conditions of optimality of the first order and to deduce new, constructive necessary conditions of optimality of the second order, allowing to narrow down the set of permissible controls suspicious of optimality.
PATTERNS IN INTELLIGENT CONTROL SYSTEMS FOR AUTONOMOUS ENTITIES
Authors: Vinogradov G. P
Published: February 2023

Nowadays, the process of integrating autonomous robotic systems (ARS) and military personnel formation is actively underway. Such a new object in the armed forces (AF) should have the property of self-sufficient behavior that guarantees mission fulfillment. The problem is in the construction of information processes in control systems that ensure a predictable behavior of an autonomous artificial system within the Armed Force subdivisions similar to a human one. Currently, the solution for this problem is the development of artificial entities that use symbolic or neural network methods and models for acquiring and formalizing “knowledge”. Ontologies made it possible to make these methods and knowledge models interpretable in natural language semantics and to bring the problem of human-machine interaction to a new level, which was noted by a number of researchers. Nevertheless, it should be noted that as long as there is no cognition process model, the theoretical results obtained are not in demand in practice and are only of theoretical interest. There is a gap between primitive behavior models of artificial entities, their interaction models and expectations from practice. The purpose of this work is to propose an approach to the intellectualization of the artificial entities’ behavior by revising the logical and mathematical abstractions underlying the construction of their onboard control systems based on the pattern theory development. Such approach ensures the transfer of effective human experience to the control systems of artificial entities, as well as the compatibility of the theological and causal approach. It is shown that the choice under severe time constraints is based on behavioral patterns that reflect effective experience. Patterns form both the information structure of representations and a set of possible variants of representations. Subject’s assessments of satisfaction with the current choice situation lead to a change in a subject's interest structure, and he can choose it. There is a developed formal model of the behavioral pattern and a method of logical inference on patterns. The paper considers the problems of identification and construction of pattern models. It proposes to use four positions of information processing for these purposes. The paper proposes an approach to developing software for intelligent control systems for autonomous systems based on the pattern theory. There are the results of behavioral pattern identification solutions that use new generation training systems with voice control. The paper considers the issues of constructing the architecture of unmanned undersea vehicles with an onboard control system that uses pattern models and a pattern inference system. It also solves the problem of the behavior tactics of the node - autonomous unmanned vehicle based on the onboard sensor system data.
THE PROBLEM OF MAKING RATIONAL DECISIONS IN THE REFINED OPTIMIZATION PROBLEM OF CHOOSING PRINTED PUBLICATIONS FROM A VARIETY OF ALTERNATIVES OFFERED BY BOOK PUBLISHERS
Authors: Bolodurina I. P , Dusakaeva S. T
Published: February 2023

The transition mainly to a distance learning format for teaching staff over 65 years of age in the higher education system, due to the complex epidemiological situation in the world associated with the emergence and spread of new strains of coronavirus infection, has updated the problem of completing the library fund of the university library with popular printed publications in a new way. The authors of the article considered it expedient to include the format of study at the university or the correlating factor of the teacher's age in the mathematical model of acquisition of the library fund with demanded printed publications among the educational and organizational factors affecting the demand for educational literature, and to assess its impact on the target function of the demand for printed publications. The conducted research has shown that the introduced factor is significant and significantly affects the demand for educational literature and, as a result, should be included in the developed mathematical model formulated in the form of an optimization problem. Taking into account the results obtained in the course of the scientific research, it is proposed to strengthen the teaching and methodological activities of the teaching staff in order to improve the quality of the acquisition of the library fund of the university library with popular educational literature in the conditions of the Covid-19 pandemic. The article focuses on the possibility of finding only rational solutions in the initial and refined optimization problem of choosing printed publications from a variety of alternatives offered by book publishers, since it describes the functioning of the university library as an organizational and technical system with such qualities as, for example, multidimensionality, self-organization and complexity.
ANALYSIS OF CUSTOMER EXPERIENCE IN THE HOTEL BUSINESS
Authors: Filippov R. A , Sazonova A. S , Lazareva D. E , Filippova L. B
Published: February 2023

In the process of marketing research, it is necessary to process large volumes of accumulated reviews, so it is obvious that the process of processing and analysis should be automated. Modern technical capabilities allow you to create an information and analytical system for formalized analysis of consumer reviews about hotels. The analysis of consumer reviews contributes to the development of the hotel business, since reviews are a qualitative way to assess the effectiveness of the company. With their help, it becomes clear what elements of the hotel complex should be paid attention to with the aim of their possible improvement in the future. The trends observed in reviews also allow you to find out what consumers expect and how best of all you can live up to their expectations. In fact, the task of analyzing the tonality of the text is equivalent to the problem of text classification, where tonal estimates can be categories of texts. To teach the classification model, a set of marked data downloaded from the Internet was used. The set contains 18,500 reviews about the hotels of Europe in Russian with the tonality indicated for them. The article is devoted to the urgent problem of determining the consumer attitude to services provided in the hotel business based on reviews from the Internet. A solution to the problem of analyzing the tonality of the entities of the hotel, extracted from the reviews about the hotel. To solve the problem, the MLP algorithm is selected, since the task of analyzing tonality is reduced to the task of classification, where tonal estimates are classification classes. Particular attention is paid to the algorithm for teaching a classification model developed using the Keras library in Python. To solve the task of analyzing the tonality of entit
Intelligent Control System for IT Specialists Training Based on Denotative Analytics
Authors: Yarullin D. V
Published: February 2023

The study identifies the growing problem of mismatch between the competencies of IT graduates of educational institutions and the requirements of employers. The goal is to develop a set of models and algorithms, as well as software that implements them to improve the efficiency of IT training. The analysis of existing approaches to its solution is made. Prospective directions of specialist modeling are revealed. The methods of labor market analysis in the field of IT-sphere based on vacancies from aggregator sites, approaches to individualization of educational programs and involvement of employers in the training process, as well as means of automation of specialist modeling were considered. Ontological approaches to specialist modeling based on expert knowledge are also studied. The concept of organizing IT training based on open weakly structured data has been developed. An approach based on natural language processing and denotative analytics is described. The proposed concept includes monitoring and collecting data on vacancies from aggregator sites with a given frequency; their subsequent processing to build a dynamic model of an IT specialist, describing the key concepts necessary for professional activity and satisfying employers' requirements; enriching the resulting model with open data on the subject area and information contained in regulatory documents; building a graduate specialist model, taking into account the links between the key concepts by constructing a denotative graph to reconstruct the hierarchy of the enriched set of concepts; forming on its basis a set of recommendations for drawing up and adjusting educational programs. The model of specialist from employer's point of view based on fuzzy sets, model of specialist-graduate including data enrichment algorithm, as well as the algorithm of recommendations formation for making and correction of educational programs were developed. The software for decision support system that implements the mentioned models and algorithms has been developed. Experimental testing with the involvement of experts from the IT industry was conducted. Positive results were obtained as a result of the experiment. The developed system can be used for drawing up and adjusting work programs of disciplines, professional retraining programs, programs of additional education in the field of directions related to information technology.
DETERMINATION, ANALYSIS AND SYNTHESIS OF THE ROOTS OF VALID ALGEBRAIC EQUATIONS USING LOGARITHMIC AMPLITUDE-PHASE FREQUENCY CHARACTERISTICS
Authors: Sleptsov V. V , Lagunova A. D , Ablaeva A. E
Published: February 2023

The article considers the method of approximate determination, analysis and synthesis of the roots of real algebraic equations of high order. The solution of such problems is relevant in the case of designing information-measuring and control systems, studying the dynamics of movement of various mechanisms (industrial robots, quadrocopters, etc.), determining the trajectories of aircraft, etc. The analytical solution of such problems is limited to equations of the third (sometimes fourth) degree, in other cases it is necessary to use either special sequential algorithms or packages of applied computer programs such as "Wolfram.Matematica", which allow only to find the roots of the equations, but not to synthesize them. The proposed method is based on the application for the decomposition of the studied polyomial (corresponding to the equation) into the simplest multipliers corresponding to aperiodic and/or oscillatory links, asymptotic logarithmic amplitude and phase-frequency characteristics. The form and values of the roots of the equation are proposed to be judged by the slopes at the fracture points of the logarithmic amplitude and phase-frequency characteristics of the polyparticle under study. The construction of logarithmic amplitude and phase-frequency characteristics is carried out by discarding the "small" terms of the polygamy at separate frequency intervals. A feature of the method is the possibility of its use both in conjunction with the computer and without it. Manual use of the method assumes that the user has a calculator and a ruler. The method allows to determine not only the roots of real algebraic equations (both real and complex), but also to establish a visual relationship between the coefficients for the terms of the equations with the type and values of the roots and purposefully change the necessary coefficients to change the parameters and type of roots. The possibilities of the method are not limited to solving real algebraic equations with positive coefficients and integer powers, it shows quite satisfactory results for equations with mixed coefficients and fractional powers. The method is quite simple, clear, has a small error in the case of far spaced roots, but in the case of closely spaced roots, its error increases, although it remains quite acceptable. The article presents the substantiation of the method, shows numerous examples of its capabilities, compares the results obtained with the results obtained with the help of the package of applied computer programs "Wolfram.Matematica".
OPTIMIZATION OF A MULTICOMPONENT POLYMER COMPOSITION USING A FUZZY MATHEMATICAL MODEL
Authors: Germashev I. V , Feoktistov E. F , Derbisher E. V , Derbisher V. E
Published: February 2023

Some aspects of the analysis of polymer composite materials as complex systems are considered. In this case, the system is presented as a combination of one polymer matrix and several active additives. Within the framework of this work, the composition is assumed to be unchanged, and the properties of the composition are controlled by changing the concentration of the ingredients. In work, a mathematical model was developed that calculates the optimal content of components to improve specific properties of the polymer composition. Obtaining such a model is partly hampered by complex interactions between components, but a solution was obtained within the framework of one specific composition. Nevertheless, it was impossible to transfer these results to other compositions in this case, and it was impossible to obtain a general mathematical model for an arbitrary composition. Therefore, to solve this problem, a black-box model was used in this work. The main methods for studying polymer compositions are presented; their systematization is considered according to the principle of controlling properties at different stages of material synthesis. In this work, a variant of controlling the properties of the polymer composition using active additives was used. The urgency of the problem related to the development of methods for assessing the properties and control of the latter by ranking the concentrations of the ingredients of the polymer matrix has been substantiated. As a result, a mathematical model for optimizing the composition of the polymer composition was obtained. It takes into account the positive and the negative influence of the ingredients on the entire composition of the polymer matrix. Also, computational experiments were carried out to find the optimal concentration of active additives in the composition of the polymer composition under conditions of pair interaction of additives. The model is presented and solved using a quadratic programming problem using a specific example. Different cut-off values were used for the content of the ingredients. The results obtained clearly demonstrate the dependence of the properties of a chemical system on the concentration of specific ingredients. Based on the results of two computational experiments under different boundary conditions, the optimal concentration was calculated for the full manifestation of two properties. The paper also presents a vector of further actions, prospects for improving the model, and possible areas of application of this model.
ASSESSMENT SYSTEM FOR SPORTS EXERCISES BY NEURAL NETWORK VIDEO ANALYSIS
Authors: Teryohin A. D , Ilyalov O. R , Stepanov A. V
Published: February 2023

This article describes the initial stage of developing an information system for evaluating a sports exercise based on the use of neural networks. The current approach to the evaluation of sports exercises and its shortcomings, as well as the advantages of introducing computer technology, were considered. The analysis of initial data is carried out. Next, the approaches that are used to analyze the position of the athlete's body during the exercise are considered, and an approach is chosen to obtain the position of the athlete's body in space and time. The definition of the concept of key points is given and their location, number on the human body are described. A number of pre-trained neural networks are considered that determine the location of key points on the human body, and the best option for solving the problem posed in this article is selected. The data sets that are used in the training of neural networks, in tasks of determining the position of the human body, are studied. The problem of image analysis is posed and an algorithm for solving the problem is introduced. As a result of the work, a prototype of an information system was developed that is capable of receiving frames from the original video sequence, processing frames using a neural network, recording the position of key points in the image to a text file, and processing data from the file for analysis.
AN ADAPTIVE SOFT SENSOR DESIGN BASED ON A NEURAL NETWORK WITH A PREDICTIVE FILTER IN THE FEEDBACK LOOP FOR A REACTION DISTILATION TECHNOLOGICAL PROCESS
Authors: Stabrov S. V , Shtakin D. V , Samotylova S. A , Torgashov A. Yu
Published: February 2023

Rectification and reactive distillation columns are the main of all units in the petrochemical and refining industry. Soft sensors consist of mathematical models that estimate of the quality of an output product in real time are used for technological processes control. In general, changes in the composition of raw materials, catalyst deactivation, etc. result in inconsistency between obtained data and the current state of the technological process. Soft sensor design obtained on such data will loss of accuracy in estimating the necessary parameters of the output product. An adaptive soft sensor design based on a neural network with a predictive filter in the feedback loop for solve the mismatching obtained data and the current state of the technological process problem is proposed. “Moving window” conception is used for size window adapting to the actual state of the technological process. Parameter estimation based on a neural network using data matching to the technological process. A predictive filter in the feedback loop for improve the estimation accuracy of the quality parameter at the cost of predicting the error of the soft sensor designed is proposed. A comparative analysis of several adaptive soft sensors based on neural networks using the "moving window" conception for estimation a by-product concentration of in the output product of the reaction-distillation column and the effectiveness of the proposed approach are shown. Application of the predictive filter in the feedback loop allows to improve the accuracy of the soft sensor based on a neural network by 12.94 % (coefficient of determination) and by 39.81 % (mean absolute error) in comparison with that of without predictive filter.
VALUATION OF MACHINERY AND EQUIPMENT WITH RANDOMLY DEGRADED OPERATING CHARACTERISTICS
Authors: Smolyak S. A
Published: February 2023

Traditionally used methods of machinery and equipment valuation do not take into account the probabilistic nature of the process of their operation. Meanwhile, stochastic models of degradation of technical systems are widely used to solve various problems of the theory of reliability. This article refers to the direction of research in which the models of technical systems degradation used in the reliability theory are applied to the problems of machinery and equipment valuation. The objects of our research are equipment items subject to degradation and random failures. The subject of research is the service life of equipment and their market value. We define the (pre-tax) benefits from the use of equipment as the market value of the work they perform minus operating costs. The market value of equipment is determined by the sum of discounted benefits from its future use. The process of equipment degradation (deterioration of its technical and economic characteristics) is described by a Poisson random process of failures, and for each failure, the performance of the equipment is multiplied by a random coefficient. Operating costs are divided into a variable part depending on the amount of work performed by the equipment and a fixed part. We accept that equipment that has begun to bring negative benefits is decommissioned. The constructed model makes it possible to obtain explicit expressions for the market value of a unit of work performed by equipment, the average value and the coefficient of variation of its service life, and also to find the dependence of the equipment market value on its performance. In some cases, appraiser only knows the age of the equipment being assessed and has no information about its performance. However, equipment of the same age may have different performance. In this situation, he can only estimate the average market value of equipment of a given age.We got an integro-differential equation to calculate this average value. It turned out that in this model it can be expressed as a function of the relative age of the value (the ratio of its age to the average service life) and the coefficient of variation of the service life. The results obtained are presented as graphs that can be directly used to estimate the market value of used machinery and equipment.
MINING MACHINE SIMULATION MODEL REFINEMENT ACCORDING TO THE ENGINES ENERGY CONSUMPTION DATA
Authors: Zatonskiy A. V , Yazev P. A
Published: February 2023

The importance of mining factories planning for ore extraction is indicated. The created simulation model with open and normative data is presented. Significant deviations of the simulation results from the real data of the mining machines monthly operating time of are shown. The goal is to refine the model with the available mining machine operation real data. As a source of data, it is proposed to use miming machines engines energy consumption. The source this information is described. Information about the mining machine engines is given. That information can be used for mining machines analyzing to determine the times of the states. There are 8 such engines in total, their sequential switching on and off allows us to understand the time of 4 technological operations that make the greatest contribution to the mining machines operating time. A fragment of the algorithm which allows to determine the operations time is given. Two combines were selected with the production differs most from the model in the direction of increase and decrease. For both combines the duration of ore breaking and ore loading from the storage hopper to the self-propelled car is determined. First, an analysis was made for the mining machine that breaks more ore than was obtained in the calculations. The analysis showed the existence of a previously undescribed state of the mining machine-simultaneous ore breaking into the storage hopper and ore loading from the storage hopper to a self-propelled car After including that state in the model, a new calculation was made. Calculation shows increasing in the model total output. In addition, analysis was made of the existing stochastic delay during ore breaking. Analysis shows that statistical distribution stochastic delay can corresponds to a negative binomial distribution. Further, the study of data for a mining machine with the producing less than the model amount was carried out. It allows to study the stochastic delay during ore loading. It is shown that such a delay can also correspond to a negative binomial distribution. The simultaneous inclusion of described delays significantly reduces the total estimated production amount. In conclusion, it is discussed that the simultaneous addition of a new state and stochastic delays with a negative binomial distribution to the model significantly reduces the modeling error.
Znaczenie pruskiego Regulamentu dla niższych szkół katolickich z 1801 r. w organizacji i funkcjonowaniu szkolnictwa elementarnego na ziemiach Zagłębia Dąbrowskiego
Authors: Glimos-Nadgórska Anna
Published: February 2023

The analysis presents the problem of legal foundations included in Prussian Regulament coming from 1801 and concerning the elementary educational system. The author tried to show which resolutions included in the document – supported by other legal acts which were published earlier and later – were taken over by the educational system organized on lands which later were called the Dąbrowa Basin, and which were a part of New Silesia and the Duchy of Warsaw between 1795 and 1807. This issue has been shown on the example of the organization and functioning of two schools: one urban school in Będzin and one school in the village of Strzemieszyce Wielkie; the village which is a part of the Olkusko-Siewierska Commune.
Człowiek, który rzucił wyzwanie włoskiej Cosa Nostrze. Działalność antymafijna sędziego Giovanniego Falcone
Authors: Waszkiewicz Izabela
Published: February 2023

“These who fear die every day. These who do not fear die only once” – these already famous words borrowed from William Shakespeare’s Julius Caesar were often quoted by Giovanni Falcone. They have a completely new tone in reference to the events which took place in Sicily in 1992. This year we are celebrating the 25th anniversary of G. Falcone’s death who during his life became a symbol of an uncompromising fight with organized crime. This Italian judge was killed in the bomb attack on 23 May, 1992 on the motorway near Capaci; the attack was organized by Cosa Nostra. The aim of this article is not to write G. Falcone’s biography but to show the phenomenon of activities and achievements of the man who consciously steered and sacrificed his own life to fight with the mafia.