bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and Qualification of Materials for Indian Advanced Ultra-Supercritical Coal-Fired Power Plant
Authors: Bhaduri A. K. , Albert Shaju K. , Nagesha A. , Moitra A. , Borah Utpal , Prasad Reddy G. V. , Laha K. , Singh Kulvir , Das A. K. 
Published: July 2021

Abstract
India has embarked on an ambitious program of setting up efficient advanced ultra-supercritical (AUSC) technology with steam temperature and pressure of 993 K and 31 MPa, respectively. This article deals with the testing and qualification of indigenously produced materials for the Indian AUSC mission project, the research and development phase of which is currently in the advanced stage of completion. As part of this, exhaustive database pertaining to various mechanical properties including creep, low cycle fatigue (LCF), creep-fatigue interaction (CFI), high cycle fatigue (HCF), fracture toughness, and crack growth has been generated covering important candidate materials such as alloy 617M tubes and forgings, 304HCu stainless steel tubes, and alloy 625 castings. Tubes of both alloy 617M and 304HCu stainless steels are to be used in the boilers, whereas alloy 617M forgings would be used as turbine rotor and alloy 625 castings as turbine casings. The data have been subsequently used to establish design curves identifying safe regimes of operation with respect to creep, LCF, HCF, CFI, and fatigue and creep crack growths. The properties were seen to be comparable with those derived from internationally developed equivalent grades. The bimetallic weld joints between alloy 617M and 10Cr steels were also evaluated to derive the appropriate strength reduction factors under creep and cyclic loadings. Additionally, the influence of thermal aging at service temperature on the microstructural evolution and mechanical properties was investigated based on tensile and fracture properties to account for the service exposure induced degradation and associated embrittlement.
Analysis of electric drive systems for performance of driving and starting under load
Authors: Khrebtova O.A. , Zachepa N.V. 
Published: July 2021

Purpose. Perform an analysis of existing automated control systems of the electric drive and methods of forming the starting torque to determine the compliance of the selected system and method to the requirements for trouble-free mode of start and start of the technological mechanism in difficult conditions or breakaway and start under load..
Methodology. Comparison of energy performance and capabilities of control systems and methods for the formation of starting torque, mathematical calculations, analysis of the properties of systems and methods in accordance with the requirements of technological operations during the start.
Findings. To obtain the results of the analysis of the current methods of starting induction motors, autotransformer start was considered, which can significantly reduce the starting current, and also connect a capacitor with a reactance to reduce the current and increase the starting torque; the use of soft start with amplitude-phase control allows you to reduce the starting current and reached the absence of its impulses. The vector-pulse method of controlling the converting device increases the starting torque in the absence of an increase in starting current, such advantages have a quasi-frequency starting mode, but the application is limited by special technological equipment. Thyristor voltage regulator using the phase control method, despite its widespread use in control systems, has a low value of the starting torque. To carry out starting in difficult conditions, according to the results of the analysis of existing systems of controlled starting, it was found that a rational electric drive system for hoisting-and-transport mechanisms is a frequency-controlled electric drive system according to the "frequency converter - asynchronous motor" (FC - IM) scheme.
Originality. For the first time it is proposed to improve the existing control systems of hoisting and transport mechanisms that perform start-up in difficult conditions when using the modes of movement to form the starting torque that exceeds the passport value by 3-4 times. Increasing energy efficiency based on increasing their efficiency, information content and data reliability. For the first time, the reasons for the shortcomings of existing control systems during start-up under load in modern production are analyzed.
Practical value. The choice of a rational electric drive system for lifting and transport mechanisms is substantiated when starting in difficult conditions, which will provide maximum efforts in the transmission of a technological mechanism with permissible current and thermal overloads of asynchronous machines.
Once again about the indivisibility of the scattered inductance of the transformer
Authors: Zіrka S.E. , Moroz Y.I. , Arturi C.M. 
Published: July 2021

Purpose. The purpose of the article is to show the inadequacy of the traditional T-shaped equivalent circuit for modeling transformer operations with saturated core. The aim is to point out the unreasonableness of the separation of the transformer leakage inductance into components. The aim is also to explain the need to apply the П-shaped transformer equivalent circuits to transformers with two and three windings with finite radial thickness.
Methodology. Analysis of magnetic fields in the transformer window and simulation of transient processes in equivalent circuits of the transformer using a preprocessor ATPDraw to the program ATP.
Findings. The unfoundedness of the well-known T-shaped transformer equivalent circuit is shown. Differences in the processes in the core legs and yokes when transformer is connected to the network and during short circuits of the windings are noted. Equivalent circuits of a transformer with two and three windings of finite thickness are proposed, reproducing these differences.
Originality. The absence of physical meaning in dividing the transformer leakage inductance into components is stated. The advantages of the П-shaped equivalent circuit are shown when calculating inrush currents accompanying the transformer switching to the network on its inner and outer windings.
Practical value. We show theoretical insolvency and practical unsuitability of the Т-shaped equivalent circuit for studying transformer operations accompanied by saturation of the magnetic circuit. Advantages of the П-shaped equivalent circuit are clarified.
LABORATORIO DE RIESGO FÍSICO
Authors: Celemín-Pabón Yuly Andrea 
Published: July 2021

Este documento registra el proceso de diseño, creación y construcción del Simulador de Riesgos Físicos para estudiantes del programa Gestión en la Seguridad y Salud en el Trabajo del Politécnico Grancolombiano, que va desde la identificación del peligro hasta la valoración del riesgo, el cual se evaluará para generar medidas de intervención que le permitan al alumno mitigar los efectos adversos a la salud de los trabajadores. Dicho simulador es apto para trabajar la práctica o laboratorio del módulo de Higiene y Seguridad Industrial III del programa profesional.
Capítulo 3
Authors: Martínez-Amado Rubén Darío 
Published: July 2021

Describir o exponer el proceso mediante el cual se logra llevar buen término el simulador de finanzas corporativas, denominado valorador de empresas, como una herramienta que acerca al estudiante a un escenario real en dicho ámbito. "Los simuladores virtuales implementados en la formación empresarial universitaria se convierten en estrategias didácticas favorecedoras del aprendizaje y del desarrollo de competencias, permitiendo aplicar los conocimientos teóricos, constatar los efectos de tomas de decisiones y minimizar los riesgos que implicarían los errores en situaciones reales" (Duque, 2018). La conclusion a la que se llega es la identificación de una necesidad en la realización de metodologias innovadoras que aporten al estudiante un valor agregado, en el sentido de ubicarlos en un escenario similar al que se van a enfrentar en un ambiente profesional.

Para tal fin, se diseña inicialmente una estrategia de aprendizaje donde se propone la valoración de diferentes tipos de empresas con condiciones próximas a una empresa real, después se estructura el funcionamiento desde lo financiero con una plantilla en Excel con los parámetros exigidos e inmersos en una valoración y posteriormente se elabora el guion donde se esboza la ingeniería de lo que seria el futuro simulador, lo anterior aunado a una guía metodológica y un manual de manejo para el estudiante.

Por su parte, se identifican hallazgos importantes en el proceso de elaboración de este simulador, en cuanto a la importancia en la especificidad, detalle, cuidado y objetividad, que generen como aporte la mayor comprensión posible por parte de los stakeholders, entendiéndose estudiantes y tutores, todo esto en procura de dotar al estudiante de competencias interpretativas y analíticas.
Capítulo 1
Authors: Rojas-Berrío Sandra Patricia , Sánchez-Torres Marcela , Sánchez-Torres Carlos 
Published: July 2021

Este capítulo informa sobre el procedimiento utilizado para seleccionar y revisar las fuentes utilizadas en la elaboración de este documento. En el primer apartado se presenta la forma como se seleccionaron y revisaron las fuentes oficiales y no oficiales y, en el segundo, se muestra el mecanismo para revisar los referentes de la literatura internacional y en el tercero están las conclusiones de estos procesos.
De acuerdo con las fuentes de información, este trabajo de investigación acudió a información primaria a partir de las entrevistas realizadas a expertos e investigadores, y a información secundaria de tipo bibliográfica. Es de anotar que, en esta investigación el nivel extensivo de la información es de tipo comparativo. Adicionalmente, los autores asumen una postura como observadores del fenómeno.
Las facultades jurisdiccionales de la SIC en el marco del principio de legalidad
Authors: Pardo Nohora 
Published: July 2021

Bajo el esquema tradicional, la administración de justicia se encuentra a cargo de la rama judicial en sus diferentes órdenes; no obstante, en la actualidad y con fundamento constitucional, la situación ha variado otorgando facultades jurisdiccionales a las autoridades administrativas, atribución de competencia del legislador de conformidad con los parámetros del artículo 116 constitucional. Las facultades jurisdiccionales que ostentan algunas entidades administrativas son de orden excepcional y se encuentran sujetas al irrestricto respeto del debido proceso y las garantías procesales. En materia de derecho del consumidor, la superintendencia de industria y comercio, entidad que tiene a su cargo el trámite eminentemente administrativo, cuenta en la actualidad con funciones de carácter jurisdiccional conferidas por la ley y reiteradas en el código general del proceso. Por consiguiente, el tema central de este capítulo se formula a partir del siguiente interrogante: ¿Cuáles fueron los aspectos de orden jurídico considerados para otorgar funciones jurisdiccionales a la superintendencia de Industria y comercio?
El capítulo se desarrolló bajo una estrategia metodológica explorativaexplicativa a partir del método cualitativo, con predominio de fuentes primarias: decisiones jurisprudenciales que abordan el tema, estableciendo las subreglas a cumplirse para una correcta atribución de funciones jurisdiccionales a autoridades administrativas.
Capítulo 1
Authors: Trujillo-Flórez Luis Martín , Murillo Juan Gabriel 
Published: July 2021

Los juegos serios son una alternativa pedagógica en los actuales procesos de formación porque combinan aspectos empresariales con la dinámica del juego. El presente proyecto consiste en la creación, diseño, desarrollo e implementación de un juego gerencial para el programa de Administración de Empresas; el cual puede extenderse a otros programas académicos de índole empresarial. Consiste en un juego donde el estudiante es el CEO de la empresa y toma decisiones en las áreas estratégicas de la misma con el objetivo de maximizar el valor de la compañía.
El software propuesto tiene varios diferenciales con respecto a los juegos gerenciales disponibles, por ejemplo, el estudiante se encuentra en un mercado dinámico donde ayuda a construir la oferta de mercado con sus propias decisiones; otro factor es la incorporación de variables macroeconómicas que permiten que las decisiones se tomen en un entorno más próximo a la realidad. Un factor más es la existencia de ciclos económicos que provocan que el juego de simulación para cada periodo académico sea diferente y no se repita semestre a semestre, generando un proceso más aleatorio como pasa en escenarios reales. De esa manera, este proyecto presenta un juego único en su especie, útil para cualquier persona que desee fortalecer sus competencias en la toma de decisiones a nivel gerencial.
Capítulo 5
Authors: Trujillo-Flórez Luis Martín , Vargas Leguizamón Yolanda Rocío 
Published: July 2021

El presente documento obedece a la descripción del proceso realizado en el desarrollo de una herramienta de simulación que facilita la evaluación financiera de proyectos como una experiencia de aprendizaje. El proyecto surge de la necesidad de entregar a los estudiantes un apoyo pedagógico con el fin de fortalecer las competencias propuestas en el módulo de Evaluación de Proyectos además de retomar conceptos y procedimientos de módulos previos.
Por su parte teniendo en cuenta el seguimiento de los resultados de los estudiantes en el módulo o asignatura y de acuerdo con la percepción de los tutores o docentes, se diseña una estrategia pedagógica que requiere como apoyo el desarrollo de un software que simule la evaluación de un proyecto de inversión, integrando ayudas metodológicas, para construir un ejercicio profesional que emula un ambiente laboral.
El presente documento describe el proceso de concepción del proyecto y planeación a través del trabajo colaborativo entre el área de finanzas y el Laboratorio de innovación pedagógica de la Institución Universitaria Politécnico Grancolombiano. Y presenta la experiencia pedagógica con cada una de las fases de simulación que permitan en los estudiantes un aprendizaje significativo y una adecuada adquisición de las competencias.
Presentación
Authors: Chiari-Escobar Jurgüen 
Published: July 2021

La educación a nivel mundial se transforma a un ritmo acelerado, la aplicación de nuevas metodologías de enseñanza, así como las tecnologías de información y herramientas para el aprendizaje evolucionan constantemente en los entornos educativos.

Tanto los contenidos como las metodologías requieren de dinámicas que contemplen nuevos esquemas de apropiación adaptados a la realidad de nuestros estudiantes. Hemos comprendido que los escenarios digitales requieren de elementos multimedia, por lo mismo, es necesario hablar múltiples ‘lenguajes’. En este largo camino de educación, no solo los estudiantes han aprendido: “En el Politécnico Grancolombiano también hemos adquirido importantes experiencias que nos han ayudado a consolidar este sueño de brindar acceso a educación de calidad para los colombianos.” (Norman-Acevedo, 2018, Pag.124).
Comparative study of type 1 tympanoplasty with and without gel-foam in the middle ear
Authors: Kiran G. Abhinav , Rao Y. Prabhakara , Priyanka B. Shanthi , . Supreety 
Published: July 2021

<p class="abstract"><strong>Background:</strong> Chronic suppurative otitis media is a widespread disease for which tympanoplasty is frequently undertaken. Gel-foam may cause adhesions and fibrosis and improper packing may physically alter the structure of the tympanic membrane leading to failure of tympanoplasty. The graft can be placed without any middle ear supporting agent wherein the graft is held in position by the surface tension between the novel graft placed and the remnant tympanic membrane. The objectives of this study were to assess the graft uptake and hearing improvement following type 1 tympanoplasty with gel-foam in the middle ear and without gel-foam in the middle ear and to compare and assess results.</p><p class="abstract"><strong>Methods:</strong> This was a randomized control trial done for a period of one year conducted in the department of ENT, at a tertiary referral hospital. 40 patients with dry perforation underwent type 1 tympanoplasty without gel-foam in the middle ear and 40 patients with dry perforation underwent type 1 tympanoplasty with gel-foam in the middle ear. Post-operative follow-up was done to look for graft uptake. Hearing assessment by pure tone audiometry was done 90 days post-operatively. </p><p class="abstract"><strong>Results:</strong> Graft uptake was 82.5% in type 1 tympanoplasty without gel-foam in the middle ear and 85% with gel-foam in the middle ear. Both types of surgeries had significant hearing improvement.</p><p class="abstract"><strong>Conclusions:</strong> Graft uptake is equally good in cases with gel-foam and without gel-foam. Hearing gain is comparable in both groups of patients.</p>
COMMERCIAL BANKING PERFORMANCE AS PREREQUISITE FOR BUSINESS DEVELOPMENT
Authors: Romashko O. , Zapukhliak I. , Krykhivska N. , Farat O. , Kalynovskyy A. 
Published: July 2021

Abstract. The article substantiates the need to improve the performance of banks as one of the prerequisites for the economic development of business entities. To assess the performance of banks, the methodological approaches to such an assessment are generalized and their advantages and disadvantages are analyzed. The ease of use and interpretation of the results obtained has been proved when using the coefficient approach as a tool for assessing the performance of Ukrainian banks. However, in order to mitigate the main drawback of the coefficient methodological approach, which is expressed in the impossibility of obtaining an unambiguous assessment of the banking performance, it is proposed to apply a methodological approach that provides for the determination of an integral indicator of the banking performance using taxonomy methods. The use of the method of taxonomic analysis made it possible to generalize eleven relative coefficients that comprehensively characterize the banking performance: the overall efficiency of the bank, the efficiency of resource use, the structure of revenues and expenses and the efficiency of personnel use, as well as obtain an integral indicator of development. The proposed methodology for assessing the level of banking performance was tested on the example of state banks of Ukraine with their subsequent ranking. In particular, the authors found that JSC «Oschadbank» was the leader in terms of performance in 2017. However, during 2018—2019, the leadership passed to JSC CB «PrivatBank». The need to improve the performance of JSC «Ukreximbank» and JSB «Ukrgasbank» was proved, since JSC «Ukreximbank» was characterized by a decrease in business performance, and the lowest level of performance was found in JSB «Ukrgasbank». We believe that research on the main reasons for the decline in the banking performance and the impact of such trends on economic growth, including the development of entrepreneurship, is promising and practically significant.
Keywords: efficiency, assessment, bank, taxonomy, integrated indicator, economic growth, entrepreneurship.
JEL Classification G21
Formulas: 0; fig.: 1; tabl.: 5; bibl.: 18.
MANAGEMENT OF THE INCOME AND BUSINESS ACTIVITY OF THE POPULATION IN THE CONTEXT OF DE-SHADOWING THE ECONOMY OF UKRAINE
Authors: Tkachyk L. , Zamaslo O. , Kulchytskyy M. , Mayovets Ye. , Mayovets Ya. 
Published: July 2021

Abstract. The shadowing of the economy is a significant obstacle on the way to stable economic development and the reason for deteriorating investment climate and imbalance of economic incentives in the national economy of Ukraine. The aim of the article is to determine the factors of shadowing and de-shadowing of Ukraine’s economy in the areas of household income and business and investment activity of the population, as well as justification of measures to de-shadow economic processes in Ukraine. On the basis the calculation of the Fechner correlation coefficient, the relationship between the level of the shadow economy of Ukraine and indicators of household income and indicators of small and medium-sized business development was revealed. Іn the sphere of household income factors determining level of the black economy are as follows: increacing in disposable income per capita (the correlation coefficient -0,75), the change in the wage share in househol incomes (the correlation coefficient -0,75), the level of social payments (the correlation coefficient +0,5) and employment (the correlation coefficient +0,75). In the field of entrepreneurship the most sagnificant factors determining level of the underground economy are change in the volume of sales of small and medium-sized businesses (the correlation coefficient -0,75) as well as change of financial result of small enterprises (functional inverse relationship).
It is necessary to increase the incomes of the population, stimulate their investment and entrepreneurial activity, in particular, liberalize tax policy for small and medium-sized businesses in order to reduce the level of the underground economy of Ukraine. Special attention should be paid to the development of small businesses, in particular, to changing approaches to regulatory policy in the field of small businesses, to simplify organizational procedures related to doing business as much as possible and ensure the availability of credit.
Keywords: underground economy, tax policy, small businesses, medium-sized businesses, entrepreneurial activity.
JEL Classification O17, H25, D31
Formulas: 1; fig.: 9; tabl.: 8; bibl.: 21.
THE INTERPLAY BETWEEN THE GLOBAL ISLAMIC FINANCE AND ECONOMIC GROWTH OF MUSLIM COUNTRIES
Authors: Batorshyna A. , Tokar V. , Kolinets L. , Sybyrka L. , Almarashdi O. 
Published: July 2021

Abstract. The article discloses development peculiarities of the global Islamic financial industry and determines its interplay with the economic growth of Muslim countries. The aim of the article is to reveal current trends in key segments of the global Islamic finance market (Islamic banking, capital market and Iinsurance) and analyze the impact of each of them on the economic growth of the countries, which are most developed in the field of Islamic finance.
The countries surveyed were selected according to the Islamic Finance Development Indicator (IFDI), which reflects the general state of the Islamic financial industry worldwide and in each country. IFDI is based on five indicators: quantitative development (QD), knowledge, governance, corporate social responsibility (CSR) and awareness.
In 2019, the United Arab Emirates (UAE), Bahrain, Indonesia, Malaysia and Saudi Arabia were the most developed countries in terms of Islamic finance. Examining the impact of different types of Islamic financial assets on the GDP of these Muslim countries, we used Eviews10 to conduct a regression analysis, which showed a positive relationship between GDP and only two types of assets, namely bank and Islamic bonds (sukuk). associated with significant volumes of these segments of the global Islamic financial market and the tradition of investing in key sectors of the economy.
We discovered the negative relationship between GDP and Islamic insurance (Takaful) in all countries studied, which can be explained by ineffective investment strategies of Islamic insurance companies, which suffer from low profitability and are unable to increase their assets in line with current trends in innovation and development. We also found the inverse relationship between Islamic funds and GDPs of the UAE, Malaysia and Saudi Arabia, which may be related to the distribution of financial resources from these countries to other parts of the world and investment cycles, including the waiting period before repatriation of profits and interest; the concentration of funds in major markets makes it impossible to scale their activities in the global market.
Keywords: Global islamic finance, Islamic banking, Islamic capital market, Sukuk, Islamic funds, Takaful, Economic growth.
JEL Classification G15, O43, O53, Z12
Formulas: 1; fig.: 1; tabl.: 5; bibl.: 20.