bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of Blood and Blood Products Requisition and Utilization in Post-neonatal Ward of a Tertiary Hospital in South Western Nigeria
Authors: Akodu SO , Adekanmbi FA , Ogunlesi TA
Published: October 2021

Background: Blood and its products ordering is a common practice in paediatrics. The ready availability of blood and blood components has resulted in liberal use. Inappropriate use of blood and blood products exposes patients to the risk of transfusion transmissible diseases and allergic and haemolytic reactions.

Objective: To assess blood and blood products requisition and utilization in a post-neonatal ward in a semi-urban tertiary hospital in Nigeria

Methods: Retrospective analysis of medical records of all transfused post-neonatal patients during the study period from 1st July 2015 to¬ 31st December 2016 to calculate the cross-match to transfusion ratio, transfusion probability and transfusion index.

Results: The units of blood cross-matched were 98 and 90 blood units transfused. The cross-match to transfusion ratio was 1.09 indicative of significant blood usage. The transfusion probability was 100% indicative of significant blood usage. The transfusion index was 1.10 indicative of significant blood utilization.

Conclusion: Transfusion of blood and blood products in the post-neonatal ward of our setting meet the standard criteria for quality indicators for blood utilization.
Análisis numérico sobre la autoeficacia escolar en los estudiantes de la Universidad Tecnológica de Tehuacán
Authors: Mascarúa Alcázar Miguel Antonio , González Báez René Alejandro González Báez , Jaimes Rodríguez Adriana
Published: October 2021

El presente trabajo hace un análisis de las respuestas de los alumnos de la Universidad Tecnológica de Tehuacán de tres diferentes programas educativos en donde sus respuestas son similares en cuanto a la autoeficacia escolar. El análisis demuestra que, si hay puntos fuertes, pero también existen áreas de oportunidad y que a pesar de los alumnos tienen entornos complejos y de escasez, dado su nivel socioeconómico, el estudiar una carrera universitaria, les permite trabajar en equipo, a ser incluyentes y atender con esfuerzo las actividades académicas, mismas que les proporcionan un buen auto concepto de su rendimiento escolar.
Abstract
In this article we analyze answers provided by students from the Technological University of Tehuacan based on three different educational programs with a numeric measurement of the answers obtained from a questionnaire on self-efficacy in academic performance to become aware of the existence of cognitive modifiability, concept which shows a relationship between a change in attitude and self-esteem due to self-efficacy in academic performance perceived by students. The analysis shows the existence of success in their education allowing students to identify the necessary competencies needed to face the labor market and, that the university is a setting that stimulates attitudes to achieve change, despite complex and low-resource surroundings in which they live in, due to their socio-economic level.
Desafíos de la educación digital: experiencias de estudiantes universitarios durante el COVID-19
Authors: Peña Estrada Claudia Cintya
Published: October 2021

El objetivo del presente artículo es analizar las experiencias y los desafíos frente a las exigencias de una educación digita ya que coexisten en la llamada educación digital, la conectividad, la creatividad, la colaboración, la convergencia y la comunidad. La investigación es cuantitativa, su diseño es correlacional y con muestreo no probabilístico. La principal ventaja que se identifica es la adaptación, la organización del tiempo y la eficacia para cumplir con las nuevas exigencias de atender las clases en línea y a distancia. Las desventajas son la brecha digital, los recursos limitados para trabajar en línea, y la incertidumbre que genera la propia contingencia sanitaria derivada de la COVID-19.

Abstract

The objective of this article is the analysis of experiences and challenges in response to demands made by digital education in which connectivity, creativity, collaboration, convergence and community co-exist. The research is quantitative with a correlational design and includes non-probabilistic sampling. The main advantages identified were, adaptation, time management, and efficiency to fulfill the new demands that online distance classes imply. Conversely, the disadvantages found are the digital divide, limited resources which prevent students to work online, and the uncertainty derived from health contingency actions taken against COVID-19.
diario como herramienta de práctica de la expresión escrita
Authors: Monroy Segundo Yedid
Published: October 2021

Para los profesores de inglés, el dominio del idioma extranjero supone una importancia vital para el desarrollo de su práctica docente, lo es desde el instante mismo en el que ingresa a la Escuela Normal. En este sentido, el trabajo de investigación que se presenta en este documento tiene como objetivo describir como el diario de clases de un profesor en formación es una herramienta de práctica de la expresión escrita (Writing), durante el último año de su formación inicial. Para ello los materiales utilizados han sido los diarios de clase de los estudiantes normalistas, de los últimos tres ciclos escolares, a partir del ciclo escolar 2017 - 2018, asignados para asesoría con la autora del presente documento. Con respecto al método empleado, se han considerado los principios que establece el análisis de contenido y del discurso, lo que permite dar cuenta de la utilidad de trabajar el diario para recuperar aspectos de su práctica docente, con la finalidad de ejercitar la habilidad de escritura en el idioma inglés.

Abstract

For English teachers, the mastery of a foreign language is considered of vital importance for the development of teacher training from the moment a student begins their academic formation at a Normal School [Teacher’s College]. In this sense, this research aims to describe how the class diary of a trainee teacher is a tool for practicing writing skills during the last year of their preparation as teachers. To do so, during the last three academic periods, beginning from 2017-2018 school year, the author of this paper has assigned diaries as tools used by trainee teachers. Regarding the method applied, the principles that the content and essay analysis establish have been considered allowing us to render a report of the usefulness of working with a diary to retrieve aspects of their training as teachers in order to practice writing skills in English.
Comparación del nivel de desempeño de una competencia usando tres instrumentos, dos basados en rúbrica y otro basado en lógica difusa
Authors: Sánchez García José Emilio , Valdez Sandoval Alberto , Soto Vega Jesús Eduardo , Gutiérrez Herrera Brenda Edith
Published: October 2021

En la presente investigación se persigue el objetivo de comparar las aproximaciones en el nivel de desempeño de una competencia usando tres instrumentos de medición, dos basados en rúbrica y otro basado en lógica difusa. Se planteó para lograr este objetivo un diseño metodológico de carácter cuantitativo. En los resultados, se encontró suficiente evidencia para decretar que el instrumento basado en Lógica Difusa resultó más preciso y exacto.  El estudio reafirma la superioridad y poder de cómputo de los modelos matemáticos que la Inteligencia Artificial pone a nuestra disposición contra algoritmos basados en lógica clásica o bi-valuadas.

Abstract

This investigation is intended to compare approximations in the level of competency using three measurement instruments two of which are rubric based and the third is based on Fuzzy logic.  To be able to accomplish this objective, we proposed a qualitative methodological design. Within the results, we found sufficient evidence to conclude that the instrument based on Fuzzy logic was more precise and exact. The study reaffirms the superiority and greater computation power from mathematical models provided by artificial intelligence compared to algorithms based on classical or 2-valued logic.
Sueño y Estrés: Su Relación Con el Rendimiento Académico En Niños
Authors: Iglesia Fabiola , Lopez Magdalena , Rosler Roberto , Logat Grabner Carlos , Logat Grabner Cristian , Castro María
Published: October 2021

Introducción: una buena calidad y cantidad de sueño nocturno es un factor esencial para permitir un adecuado funcionamiento diurno. El sueño puede alterarse debido a una multiplicidad de factores, reconociendo al estrés experimentado durante el día como uno de ellos. Este trabajo propone analizar en qué medida el estrés percibido y la calidad y cantidad de sueño afectan el desempeño académico de escolares de educación primaria. Metodología: La muestra estuvo conformada por 465 estudiantes de 6 a 12 años de edad, y sus docentes, quienes respondieron preguntas sobre rendimiento académico, calificándolo según una escala de 5 puntos. Los niños respondieron el Inventario de Estrés Cotidiano Infantil y el Cuestionario BEARS para conocer la calidad y cantidad de sueño. Resultados: Encontramos que existe una deuda de sueño en todas las edades, El 54,6 % de niños no duermen las horas recomendadas y un 83,4 % reportan diferentes dificultades de sueño. El 48,4 % de niños muestran un alto nivel de estrés. Los niños que manifiestan menor percepción de estrés y mejor perfil de sueño son los que obtienen un mejor rendimiento académico. Conclusiones: Los hallazgos exponen la necesidad de un abordaje psicoeducativo de estas variables para optimizar los desempeños escolares y promover la salud en esta etapa evolutiva.
Neurooncología y su relación con las herramientas de Machine Learning: Un estudio de revisión.
Authors: Parra-Bolaños Nicolás , Benjumea-Garcés Juan Sebastián , Giraldo Ocampo Julián Darío
Published: October 2021

La neurooncología es una disciplina cientifica que en la actualidad está haciendo uso constante del machine learning. En este estudio de revisión se hace una pesquisa por varias de las mejores y más rigurosas bases de datos del mundo, con el objetivo de entender cómo el machine learning, que es una herramienta devenida de las nuevas tecnologías de la información y la comunicación para conseguir generar algoritmos y tecnologías basadas en el aprendizaje humano para, desde los principios más básicos y elementales del condicionamiento clásico y operante, hacer una emulación primitiva y rudimentaria de los mecanismos de aprendizaje automatiados en grandes servidores computacionales que se han puesto al servicio de la mayor parte de ciencias existentes. Esta investigación de revisión ha encontrado que el machine learning se está convirtiendo en una herramienta cada vez más usada por los expertos en neurooncología de todo el mundo, con la perspectiva de generar marcadores predictivos mucho más precisos y ambiciosos.
Incertidumbre financiera de las Empresas Sociales del Estado en Colombia: análisis exploratorio para los años 2010 – 2015
Authors: Arboleda Posada Gladys Irene , García Arango David Alberto , Henao Villa Cesar Felipe
Published: October 2021

Las Empresas Sociales del Estado (ESE), enfrentan el desatino de manejar mejor sus recursos, para lo cual deben utilizar técnicas contables y de análisis financiero actualizadas, como lo sugieren los principios y prácticas financieras. El presente articulo pretende analizar los problemas administrativos de índole financiero, especialmente los relacionados con la liquidez, rentabilidad y endeudamiento que se desprenden de contratar la prestación de servicios de salud con las empresas prestadoras y los municipios en la región central de Colombia. A nivel metodológico se desarrolla un estudio descriptivo de corte transversal, los datos fueron tomados de un archivo suministrado por el Ministerio de Protección Social que contiene un total de 3226 registros de Empresas Sociales del Estado para los años 2010 a 2015, distribuidas en 12 departamentos para un total de 547 instituciones por niveles de atención. Se obtienen los resultados de aplicación de un análisis factorial exploratorio y su consecuente modelo de regresión, dando como resultado una relación entre las cuentas por cobrar y los indicadores de liquidez, endeudamiento y rentabilidad. Como conclusión se identifica la necesidad que las Empresas Sociales del Estado tengan claridad sobre su situación financiera, en términos de liquidez, endeudamiento y rentabilidad, para poder cumplir con su objetivo social de preservar la salud de la población, prestando servicios de calidad.
Transmigration Policy in Papua as a Discretion Action of the Papua Province Government
Authors:   Faculty of Law, Universitas Cenderawasih, Thesia Elias Hence
Published: October 2021

This research is to find out the validity of the Transmigration Policy of the Papua Provincial Government will discuss, as well as the policies of local governments especially in Papua Province which issued policies based on Discretion by enacting provincial regulation No. 15 of 2008 on Population based on Law No. 21 of 2001 on special autonomy for Papua, where the regulation regulates programs made by the central government is wrong. The other is the arrangement of the transmigration program. The type of research that will be done is legal research (legal research) that is to find and find the principles and rules that govern status, which to be presented is a match between the rule of law and legal norms. From the results of the study showed that the actions of the Papua Provincial Government by expressing a rule based on the principle of discretion, but the habit is considered.
IMPACTO EN LA HUMANIDAD CON LA GENERACIÓN DE COMUNICACIÓN DE DATOS EN EL CAMPO ELECTROMAGNÉTICAS ENCIMA DE LA SALUD EN PERSONA.
Authors: Marcillo Merino Mario Javier , González Bonilla Kerly , Vera Guale Roosebel Adonys
Published: October 2021

El presente artículo científico se enfoca en la nueva realidad con las nueva red 5G, porque lo que me llevo a investigar sobre los impacto que tendrá esta tendencia, como pregunta principal ¿Está red de 5G provocara enfermedades en a la piel a comenzar a transitar como ondas magnéticas en todo los países?

En el desarrollo de mi tema contare con herramientas principales que me ayudara a obtener resultados en la investigación. Esta ideas y curiosidades de saber la realidad en como la tecnología en vez de inclinar está subiendo de una manera extraordinaria con nuevos inventos e innovaciones, como principalmente hay un país subdesarrollado que es CHINA.

Es desde hay que nace mi ideas porque según las noticias internacionales china ya lanzo el satélite de Taiyuan  junto con el satélite STAR-ERA-12 que lo denominaron experimental con la tecnología de telecomunicación de sexta generación.

Para definir lo que vamos a redactar son este artículo científico con el fin de dar con la realidad sin distorsionarla con el futuro, aunque esto avanza de manera rápida,  pero tratare de reducir las falacias con citas bibliográficas.
EL INTERNET DE LAS COSAS Y SU APLICACIÓN EN LA PANDEMIA CONTRA EL COVID-19
Authors: Lucas Arteaga Roddy Steven , Cevallos Flores Shayla Ayllin , Pita Salazar Raquel Azucena , Quijije Quiroz Hilda Brigitte , Marcillo Merino Mario Javier
Published: October 2021

RESUMEN

Esta investigación se llevó a cabo para presentar la existencia acerca de la IoT y los avances contemplados desde su implementación, desde la perspectiva enmarcada en su utilización en los diversos ámbitos tecnológicos, así como y a nivel material en el desarrollo de prototipos teniendo en cuenta el apogeo de los avances tecnológicos actuales para generar nuevos inventos. El objetivo primordial del internet de las cosas es mejorar los desafíos que podrían dificultar la realización de sus potenciales beneficios, uno de ellos se centró en la pandemia del covid-19 que afecto innumerables ámbitos sociales políticos y económicos, así como investigaciones de campo que en estos tiempos pudieron haberse lanzado al mercado facilitando las tareas en diversas áreas. Dentro del desarrollo de la investigación se abordaron los diferentes métodos científicos tales como métodos teóricos que implica histórico-lógico, análisis–síntesis y método bibliográfico. Los resultados demostraron el progreso de la tecnología y la calidad tecnológica por lo tanto se concluyó que el internet de las cosas es la herramienta del futuro que se conjuga con ramas de la mecatrónica y la inteligencia artificial para desbordar el boom de innovación.

PALABRAS CLAVE:

Apogeo; investigaciones; tecnología
Scientific and scientific and technical expertise: problems of system formation
Authors: Chernykh S. I. , Frolova N. D.
Published: October 2021

The legal grounds for expertise in the scientific sphere are laid in the Federal Law “About Science and State Scientific and Technical Policy”, which states that public authorities of the Russian Federation and public authorities of the subjects of the Russian Federation organize the expertise of scientific and technical programs and projects financed by the corresponding budget. It is pointed out that there is a need for expert evaluation of the results of ongoing research and development in The Strategy for Scientific and Technological Development of the Russian Federation. The issues of organizing and conducting expert evaluations in certain areas of activity are sorted out on the basis of a number of “sectoral” federal laws, by-laws and methodological recommendations. Despitethe abundance of normative-legal documents, many fundamental issues related to scientific and scientific-technical expert activity remain unresolved yet. For example, the federal legislation does not define the procedure of organizing and conducting scientific and scientific-technical expertise, the relations between the participants, their rights and obligations. Meanwhile, much depends on quality and unbiased expertise in the scientific sphere, including the development of fair competition for resources. The authors seek to analyze from theoretical, legal and practical point of view the unresolved problems in the areas of scientific and scientific-technical expertise and its competitive component, and to make up appropriate recommendations, including those related to expert activity at the level of public authorities and in state funds supporting science. It is also proposed to come back to the issue of adopting a basic law on scientific and scientific-technical expertise, sipulating the leading role of the Russian Academy of Sciences in the independent expertise of scientific, scientific-technical and innovative projects.
The antitrust immunity of intellectual property in Russia
Authors: Burchik S. S.
Published: October 2021

The growing importance of intellectual property as an asset raises the question whether exercising of the intellectual property rights shall be regulated by antitrust law to protect against possible abuses and ensure the efficiency of the economy. The study aims to improve the existing regulation in the Russian Federation and align it with the idea of balancing private and public interests while fostering competition and encouraging innovation.
The concept and evaluation methods of cartels and other anticompetitive agreements latency
Authors: Batanova K. Kh.
Published: October 2021

The author examines the question of crime latency and cartels and other anti-competitive agreements latency at the interface of forensic science and competition law, presents evaluation methods of cartels and other anti-competitive agreements latency taking into account their pros and cons, suggests the definition of cartels and other anti-competitive agreements latency.
Responsabilidad profesional médica del patólogo
Authors: Ferrer Marrero Daisy , Rodríguez Almada Hugo , Arzuaga Anderson Isnerio , Pérez Alvarez Halina , Píamo Morales Alberto , Alvarez Santana Reynaldo
Published: October 2021

La responsabilidad, del latín “respondeo” que significa obligación de responder por nuestros actos, determina ciertamente una obligación del ser humano más allá de su calificación. 1 La medicina es una ciencia en la cual el riesgo está siempre latente 2 debido a múltiples causas; por tanto, existe un margen de error inevitable en muchas etapas del diagnóstico y tratamiento, a veces, sin consecuencias, que puede afectar la relación riesgo-beneficio. 3 No obstante, puede ocurrir algún efecto susceptible de ser impugnado.
Effect of Aluminum Alu C and HCM-40 and Yttrium Oxides Y2O3 on the Properties of Composition Materials Based on Perfluorinated «Neofton N» Rubber
Authors:   Federal State Unitary Enterprise S.V.Lebedev Institute for Synthetic Rubber (FSUE «ISR»), Tsypkina I.M. , Volkova M.A. ,   Federal State Unitary Enterprise S.V.Lebedev Institute for Synthetic Rubber (FSUE «ISR»), Lebedev N.V. ,   Federal State Unitary Enterprise S.V.Lebedev Institute for Synthetic Rubber (FSUE «ISR»), Nadervel T.A. ,   Federal State Unitary Enterprise S.V.Lebedev Institute for Synthetic Rubber (FSUE «ISR»)
Published: October 2021

The properties of two groups of composite materials (CM) based on perfluorinated rubber (FFKM) «Neofton-N» with different contents of trivalent metal oxides: pyrogenic aluminum oxide (Alu C), hollow corundum microspheres (HCM-40) and nanodispersed powder yttrium oxide (Y2O3) were obtained and investigated,. The rheometric characteristics of CM cured with 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane (BOAP) and perfluorohexamethylene-bis-perfluorohexylimidoylamidine (DPIA-65) and their mechanical properties were determined. Thermogravimetric analysis was used to study their temperature parameters. The possibility of obtaining CM with a high level of properties, operable in the temperature range 250–330 °C, has been shown.
Harnessing the Challenges of Covid-19 Ethics on Students Learning in Chemistry
Authors: N. Nnoli Julie
Published: October 2021

This paper discusses the challenges of covid-19 ethics on students’ learning of chemistry in secondary schools in Anambra State and how to harness the challenges. Three research questions and one null hypothesis guided the study. A descriptive survey design was used. Three hundred (300) SS3 chemistry students drawn from 45 secondary schools out of 258 public schools in Anambra State formed the sample for the study. Twenty (20) item structured questionnaires on a four-point rating scale developed by the researchers were used for data collection. A reliability coefficient of 0.85 was established using Cronbach Alpha techniques. After the administration of the instrument to the respondents, the data obtained were analyzed using mean and standard deviation to answer the research question and z-test to test the null hypothesis at the significance level of 0.05. The results obtained showed that male chemistry students have greater challenges on covid-19 ethics than their female counterparts. They are faced with the following challenges of covid-19 ethics that hinder the inculcation of chemistry learning. Lack of interest in STEM education (chemistry) due to persistence lockdown, lack of E-learning abilities, lack of ICT knowledge, lack of computer or android phone to study at home and tired of being locked indoors. There is no significance difference between male and female chemistry students’ level on covid-19 ethics in the learning of chemistry in Anambra State. It was recommended that students should be encouraged to develop interest in chemistry, have access to ICT gadgets and computers, engage in E-learning abilities and inculcate more study habit at home. This should help the government and chemistry teachers to assist in ameliorating the predicaments in STEM education.
An Adaptive E-learning System for Teaching Mobile Applications﻿
Authors: Pashev George
Published: October 2021

Support for various aspects of personalization and adaptation of the reviewed tools is not at the desired level of abstraction - very often depends on the specific way in which it is assumed that a learning object will be combined, to build a learning path for going through an e-course, or to achieve learning goals. This document describes an innovative and more abstract model and related software system for adaptive e-learning. A software prototype for adaptive teaching of the disciplines "Mobile Applications" and "Programming applications for mobile devices", taught at Plovdiv University "Paisii Hilendarski” is presented. Objectives are discussed, based on an extensive overview in the field of adaptive e-learning systems and the software implementation of the e-learning tool is presented. Results of specific tests with study activities will be presented in future scientific publications.
Dynamics of Pulse Scenario in Bundelkhand Region of Uttar Pradesh: A Temporal Analysis
Authors: Sah Uma , Dixit G. P. , Kumar Hemant , Ojha Jitendra , Katiyar Mohit , Singh Vikrant , Dubey S. K. , Singh N. P.
Published: October 2021

The paper examines the temporal changes in the area, production and productivity of major pulse crops in Bundelkhand region of UP during last two decades (2000-2020). Published data on area, production and productivity was utilized for the purpose. Study period was divided into period-I (2000-10) and period II (2010-20) and overall period III (2000-2020). Consistent decline in overall pulse area (-0.64%) and production (-0.36%) was observed, however, the overall pulse productivity registered marginal upward trend (0.06%) during the analysis period (2000-20). Chickpea (-5.03% and -0.64 %) and lentil (-0.51% and – 4.37%) crops registered highest decline in overall area and production respectively. Urdbean registered highest decline (-6.52%) in productivity during the said period. In contrast, mungbean crop followed by urdbean recorded highest growth in area (3.48%, 3.02%), and production (3.61%, 2.71%), while field pea registered highest growth in productivity (1.96%). Instability of pulse production over the study period was high (30.31%), however the instability in pulse area was low (11.7%). Analysis of inter district variation in pulse performance reflected decline in area and production of pulses in all districts except in Lalitpur. Inter district variations helped in identifying the potential districts in the Bundelkhand region of UP state.
Reading Identity, Reading Essence: A Strategic Essentialist Approach to Mulk Raj Anand’s Untouchable
Authors: Ilhaam Saleha
Published: October 2021

The term strategic essentialism, coined by Spivak, is generally understood as “a political strategy whereby differences (within Group) are temporarily downplayed, and unity assumed for the sake of achieving political goals.” On the other hand, essentialism focuses that everything in this world has an intrinsic and immutable essence of its own. The adaption of a particular “nature” of one group of people by way of sexism, culturalization, and ethnification is strongly linked to the idea of essentialism. Mulk Raj Anand’s Bakha is dictated as an outcast by the institutionalized hierarchy of caste practice. He is essentialized as an untouchable by attributing to him the characteristic of dirt and filth. However, unlike other untouchables, Bakha can apprehend the difference between the cultured and uncultured, dirt and cleanliness. Via an analysis of Anand’s “Untouchable,” the present article aims to bring to the forefront the horrid destruction of the individual self that stems from misrepresentations of personality. Through strategic essentialism, it unravels Bakha’s contrasting nature as opposed to his pariah class, defied by his remarkable inner character and etiquette. The term condemns the essentialist categories of human existence. It has been applied to decontextualize and deconstruct the inaccurately essentialized identity of Bakha, which has made him a part of the group he does not actually belong to.
Rémi BaudouÏ (Ed). Le Corbusier. 1930-2020. Polémiques, mémoire et histoire
Authors: Torres Cueco Jorge
Published: October 2021

Rémi BaudouÏ (Ed). Le Corbusier. 1930-2020. Polémiques, mémoire et histoire Paris : Éditions Tallandier, 2020

ISBN : 979-10-210-4275-9

 
Giuliano Gresleri, in memoriam
Authors: Calatrava Juan , Dercelles Arnaud , Torres Cueco Jorge
Published: October 2021

El nº 4 de LC está marcado, desgraciadamente, por un acontecimiento luctuoso: el fallecimiento, el 20 de diciembre de 2020, de Giuliano Gresleri. Arquitecto, historiador de la arquitectura, crítico, teórico, Gresleri ha sido una referencia fundamental en la investigación sobre Le Corbusier y desde LC queremos rendir homenaje a su memoria.
Comunicación distribuida activada por eventos para la sincronización de velocidad angular de motores BLDC en red
Authors: Hernández-Méndez A. , Guerrero-Castellanos J.F. , Orozco-Urbieta T. , Linares-Flores J. , Mino-Aguilar G. , Curiel G.
Published: October 2021

Este trabajo presenta el diseño e implementación de un control colaborativo descentralizado para la sincronización de velocidad angular de un conjunto de motores de corriente continua sin escobillas (BLDC) distribuidos espacialmente. Apoyándose de un control por rechazo activo de perturbaciones, actuando como un bucle interno, la dinámica del BLDC puede asimilarse a la de un integrador de primer orden y el cual será considerado un agente. Se propone entonces una estrategia de control colaborativo descentralizado con una comunicación activada por eventos, que resuelve el problema del consenso líder-seguidor del sistema multi-agente y, con ello, la sincronización de velocidades entre motores. La topología de comunicación entre agentes se modela usando un grafo conectado y no dirigido. La ley de control descentralizado incorpora una función de evento, que indica el instante en el que $i$-ésimo agente transmite la información de velocidad angular a su vecino. El intercambio asíncrono de información permite reducir el tráfico de datos en la red de comunicaciones, lo que permite aprovechar el ancho de banda. Al analizar la dinámica de la trayectoria del error del sistema, se establece que el vector de error del sistema multi-agente tiende de forma exponencial y permanece confinado a una vecindad del origen del espacio de estados de error. Aunque la estrategia está diseñada para n-agentes, se desarrolló una plataforma experimental compuesta por dos motores y un líder virtual, permitiendo validar la estrategia. Los resultados experimentales muestran un excelente desempeño del consenso de velocidad angular de ambos motores BLDC para tareas de regulación, mientras que el uso del ancho de banda es de solamente 1.25 % con respecto a una implementación de comunicación periódica.
Students’ Lived Experiences During the Pandemic: Their Expressions through Art and Poetry
Authors: Beckett Blake , Johnson Susan
Published: October 2021

Blake, a language arts teacher, and Susan, a visual arts teacher, were both committed to connect our students’ lived experiences of the pandemic with their academic learning in our new virtual classroom environments. Through this inquiry cycle, we were reminded of the critical role teachers play in addressing the social and emotional needs of their students, and seamlessly integrating those needs with academic goals. We chose to make our remote instruction platforms work for the individual needs of students rather than use a standardized curriculum enacted on an online platform (McQuirter, 2020). Our students responded, as evidenced in this essay, with meaningful works of art, communicating their pandemic experiences through poetry and photography. Teaching and inquiring into teaching through the pandemic provided us with an even better understanding of using students’ lived experiences to achieve academic goals, rather than the other way around.
CONTROLE DA QUALIDADE E PADRONIZAÇÃO DA VEICULAÇÃO DO ÓLEO ESSENCIAL DE LAVANDA EM ÓLEO FIXO DE SEMENTES DE GIRASSOL
Authors: Valverde Simone Sacramento , Oliveira Temistocles Barroso De , Moraes Milla Monteiro , Medina Edymara Tatagiba , Silva Sandra Cristina De Souza Borges
Published: October 2021

Introdução: Óleos essenciais de lavanda (OL) são mundialmente utilizados, pelo seu aroma, efeitos no relaxamento muscular, atividade espasmolítica e efeitos sedativos, investigados em várias espécies, incluindo o homem, pela inalação dos seus vapores. Preparações em diluições do OL são utilizadas em massagens corporais, objetivando o relaxamento muscular. Esses efeitos terapêuticos são atribuídos aos monoterpenos linalol (L) e acetato de linalila (AL) que respondem pela redução geral das atividades através do estímulo olfativo. Trabalhos anteriores do nosso grupo, mostraram a abordagem da aromaterapia como estratégia para o alívio da dor em gestantes, sendo o óleo essencial de Lavanda angustifolia o mais utilizado no alívio da dor durante o trabalho de parto, bem como na redução da ansiedade. Todos os resultados corroboram para a ação de L e AL no favorecimento dos hormônios femininos presentes no trabalho de parto, pela supressão do neocórtex e ação do “cérebro primitivo”, ao favorecer concentração e tranquilidade à mulher. Objetivos: Objetiva-se o controle da qualidade dos óleos empregados e das preparações, uma padronização do uso e garantia da eficácia e segurança e rotulagem desta formulação, seguindo padrão estabelecido pela ANVISA para produtos fitoterápicos tradicionais. Material e Métodos: Avaliamos duas marcas de OL, por diferentes metodologias em CG-EM e após a semiquantificação dos biomarcadores L e AL foi definida a padronização veicular do OL em óleo fixo de girassol (Heliantus annuus) (OG), pelas suas propriedades emolientes e umectantes. Resultados: 1% p/v de OL em OG, a concentração de [L+LA] quantificada variou entre 70,5-85,5%, administrando-se dose de 20 mL padronizada entre 0,035-0,043%. Conclusão: Assim, o OL (Lavandula officinalis): 0,08mg (padronizado em 1mL / 100mL de óleo vegetal fixo, equivalente a 0,035-0,043% de linalol acetato de linalila expressos em linalol) do óleo de massagem para o alívio da dor lombar em gestantes.
COMPOSTOS BIOATIVOS DE SEMENTES DE ANNONA X ATEMOYA MABB. ‘GEFNER’ DURANTE O PROCESSO DE EMBEBIÇÃO EM GA3
Authors: Silva Gustavo Cabral da , Honório Ana Beatriz Marques , Martin Bruna Cavinatti , Campos Felipe Girotto , Ferreira Gisela
Published: October 2021

Introdução: O metabolismo especializado das plantas é responsável pela síntese de moléculas que respondem e interagem com o ambiente circundante, podendo ser modulada por diversos fatores, variando a quantidade e concentração dessas moléculas. Espécies da família Annonaceae, como a Annona x atemoya Mabb. (Atemoia) sintetizam alcaloides, que são compostos nitrogenados, em resposta aos fatores ambientais. Esses compostos são encontrados em diferentes estruturas da planta e apresentam atividades biológicas, tais como ação antimicrobiana, citotóxica, antitumorais, antiprotozoário, antiviral, além de muitas outras aplicações. Porém pouco se tem de aproveitamento do uso de sementes de atemoia após o processamento de frutos na indústria alimentícia. Sabe-se ainda que, durante o processo germinativo, sementes de atemoia apresentam dormência que pode ser superada com o uso do ácido giberélico GA3, porém pouco se sabe sobre o uso de GA3 afetando a produção de alcaloides nestas sementes. Objetivo: Avaliar se o uso de giberelina (GA3) em sementes de Annona x atemoya Mabb. cv. ‘Gefner’ afeta a produção de alcaloides durante o processo de embebição. Material e métodos: Os tratamentos foram constituídos pela embebição das sementes em H2O (água deionizada) e GA3 (giberelina) (ProGibb® 400) na concentração de 500mg.L-1 (ingrediente ativo) por 36 horas, em temperatura alternada (20-30ºC), com fotoperíodo de 18h de luz e 6h de escuro, empregando-se 4 repetições de 25 sementes por tratamento, e os alcaloides foram extraídos das estruturas de sementes (endosperma e tegumento) por método de partição ácido-base. Resultados: As sementes de atemoia apresentam alcaloides com maior concentração no endosperma do que em tegumento. Este fato sugere que as sementes de atemoia podem ser utilizadas como fonte de novos compostos bioativos para fins terapêuticos e que, portanto, representam excelente alternativa de captação de recurso financeiro gerado a partir de seu descarte em função da industrialização dos frutos. Porém o uso de GA3 não provocou aumento da síntese de alcaloides. Conclusão: O GA3 utilizado para superação da dormência de sementes não estimula o aumento da síntese de alcaloides durante a embebição de sementes de atemoia ‘Gefner’.
AVALIAÇÃO DA ECOTOXIDADE DO CAROTENOIDE BIXINA EXTRAIDO DA (BIXA ORELLANA L.)
Authors: Soares Neidelênio Baltazar , Fonseca Aluisio Marques , Gaieta Eduardo Menezes , Freitas Ícaro Bezerra De , Neto Lutuina Ambrosio Capangue
Published: October 2021

Introdução: A bixina (metil hidrogênio 9’-cis-6,6’-diapocaroteno- 6,6’-dioato), é um diapocarotenóide com configuração cis,1,8 solúvel em solventes orgânicos e sendo o pigmento predominante nas sementes do urucum. Objetivos: O presente estudo tem como objetivo principal verificar a ecotoxicidade da bixina extraída do urucum frente a Artemia salina. Os testes de ecotoxicidade são elaborados para avaliar ou prever os efeitos tóxicos nos sistemas biológicos e dimensionar a toxicidade relativa das substâncias. Artemia salina, é um micro crustáceo marinho, ela tem sido utilizada em experimentos laboratoriais como um bioindicador, sendo o seu grau de tolerância em relação a um fator ambiental reduzido e específico, de modo que apresenta uma resposta nítida frente a qualidade do ambiente. Materiais e Métodos: A metodologia consistiu no cultivo das larvas da Artemia salina, e posteriormente colocou-se em contato com o extrato da bixina em diferentes concentrações e fez-se a contagem da letalidade em 24 e 48 horas. Resultados: Os dados obtidos foram analisados usando o programa de Probit. Para validação dos dados, foi considerado a escala da toxicidade das amostras extremamente tóxicas quando dose letal 50% (DL50)< 1 ppm; altamente tóxico quando o valor DL50 entre 1 a 50 ppm; moderadamente tóxico quando o valor DL50 entre 50 a 500. Quanto aos resultados, os valores obtidos do extrato de Bixina analisado demonstraram-se ser é extremamente toxica pois apresentaram 0,5X103 ppm após 24 horas e 0,01X103 ppm após 48 horas. Conclusão: Desta forma, o presente trabalho sugere a realização de mais estudos, pois a bixina tem sido utilizado para diversos fins industriais.
Weed Identification in Crop Field Using CNN
Authors:   Post Graduate Department of Computer Science, University of Kashmir, Hazratbal., Zahoor Saniya , A.Sofi Shabir ,   Department of Information Technology, National Institute of Technology Srinagar.
Published: October 2021

Since the ages agriculture has remained as the backbone of economies especially developing countries like ours, where population is growing rapidly being second most populated country in the world, food demands are increasing so, farmers need to maximize their productivity. Weed is one of the enemies to farmer’s crop which competes with the crop for nutrients and sometimes hinders the growth of crop. Weed can cause loss of production ranging from 10 to 100%. There has been research on the use of many CNN models for weed identification. This paper presents a classification model to distinguish between weed and crop images and it classifies 12 species of weeds and crops. The proposed model achieves 96.45% of accuracy during training and of 90.08% during validation and testing.
Techniktrends für Fahrradfans
Authors: Ciupek Martin
Published: October 2021

Mobilität: Sowohl auf der Messe Eurobike als auch auf der IAA Mobility 2021 waren im September viele Neuheiten rund ums Fahrrad zu sehen. Die Branche zeigt sich innovationsfreudig. Wir haben eine kleine Auswahl technischer Leckerbissen zusammengestellt. Von Martin Ciupek
IMMEDIATE PROSTHESIS:
Authors: De Andrade Catunda da Silva Raylena
Published: October 2021

The immediate total prosthesis is a device made before the exodontia and is installed soon after the accomplishment of the same ones. Faced with a situation in which the patient encounters the remaining condemned teeth, many resist to remain edentulous while awaiting the healing phase for the manufacture of a conventional total prosthesis; thus, the total immediate prosthesis becomes an ally in these cases, promoting the return of aesthetics, phonetics, chewing and social coexistence. Through a literature review, this work aims to clarify the pertinent issues of the immediate total dentures, where they were presented their classifications, advantages and disadvantages, indications and contraindications, technique of making this prosthetic device, besides post-installation care. Searches were made in the databases Scielo, Medline, Bireme, Google academic, Capes and books; using the key words: immediate total prosthesis; immediate oral rehabilitation; oral surgery and selected articles between the years 2009 to 2019. It was possible to conclude that the advantages of the rehabilitation with immediate prosthesis are very evident, being thus an advantageous alternative of treatment.
THE MANAGER'S "PUZZLE":
Authors: Cristina Gularte Liberato Carla
Published: October 2021

Working in multidisciplinary teams is important to provide quality care and excellence, a goal of practically all hospital units. Providing conditions for the development of this work, ensuring the well-being of the members of these teams, planning the forms of action, costs and investments are objectives of excellent management. For the objectives to become a reality, the manager must have knowledge of the actions developed in his unit, as well as conduct adequate and continuous training, supporting his team, resolving doubts, based on scientific evidence.
Literatura, memória e cultura
Authors: Costa Margareth Torres de A. , Menezes Ana Cristina , Noletto Israel A. C. , Carvalho Natanael de M.
Published: October 2021

Apresentar reflexões sobre a literatura, memória e cultura envolveu um exercício de revisões críticas sobre as teorias que envolvem estes temas, no entanto, neste livro foram priorizadas leituras sobre determinados teóricos como, por exemplo, Bhabha, Cevasco, Karnal, Pesavento, Benjamim, Certeou, Le Goff, Castells, Hall, Assmann sobre literatura, história e culturae em Bosi, Halbwachs, Sant'anna, tronca, Seligman-Silva, Gagnebin, Ricouer, Sarlo e Nora sobre a memória. Mergulhar na tentativa de tecer comentários críticos sobre as definições e conceituações de memória e cultura envolve uma imensidão de categorias como espaço, a recuperação das histórias, fatos sociais, onde as ações tiveram lugar, as comparações entre presente e passado situando os leitores em determinadas épocas e a evidência dos sentimentos, emoções forçando os leitores a emergirem nas leituras dos textos e sentirem desejos de aprofundarem estas leituras.
Use of piezoelectric techniques monitoring continuum damage of structures
Authors:   , Nhassengo Sikhulile Khululeka
Published: October 2021

The objective of the present study was to investigate if piezoelectric techniques or sensors can be used in monitoring structural degradation. The study considers experimental results and analytical modelling of a ductile structure under tensile and cyclic loading. Throughout the project the emphasis was placed on the effectiveness of strain measuring sensors. Conventional tensile testing was conducted using a Lloyds testing machine. The testing machine was calibrated to have a lateral movement of 2mm/min (tension force). Rectangular plates were pulled in tension until failure. From that experimental data was produced for a uni-axial loading system. Cyclic testing was carried out using an in-house designed and manufactured fatigue machine. It produced a reciprocating load (force) of 25rad/s on a rectangular plate. Two different sensor measuring instruments (strain gauge and piezoelectric) were used. The strain gauge sensor was attached to a specimen and connected to a Wheatstone bridge. The piezoelectric sensor was attached to the specimen and then linked directly to the capturing system. From these two sensors experimental results were obtained and compared. The mathematical relationships for the rectangular plates were formulated using effective stress-strain behaviour based on the elastic and plastic behaviour of the plates. The analytical and experimental results were compared. Results from this investigation show that piezoelectric sensors can be useful for measuring fatigue failure on a ductile material.
ТОБЫЛ ӨЗЕНІНІҢ ҚОРЕКТІК БАЗАСЫ
Authors: Баринова Гулназ
Published: October 2021

Мақалада Тобыл өзеніндегі зоопланктон мен бентостық организмдердің түрлік құрамы анықталып көрсетілген. Тобыл өзеніндегі 6 станция тексеріліп, қоректік базасының дамуы бағаланды. 2020 жылдың барлық зерттеу кезеңінде планктонды омыртқасыздардың 16 түрі (оның ішінде 4 коловратка, 6 бұтақмұрттылар және 6 ескекаяқты шаяндар) және 30 бентосты организмдер анықталды. Коловраткалардың ішінде ең көп таралған түр B.angularis, бұтақмұрттылардың ішінде – D.pulex (Leydig) және ескекаяқты шаянтәрізділердің ішінде – M.leuckarti (Claus) түрі барлық зерттелген аймақтардың зоопланктондық қауымдастығының құрамына кірді. Бентостық организмдердің ішінде Тобыл өзенінде ең көп таралған түрлер – C.Plumosus Linnaeus және T.tibifex (O.F. Müller, 1773). Сонымен қатар жартылай қатты қанаттылар, инеліктердің дернәсілдері, су қандаласы және қатты қанаттылар сияқты жәндіктер топтары алуантүрлі болды. Организмдердің жоғары алуантүрлілігі, ең алдымен, әртүрлі ландшафтық аймақтарда және экологиялық жағдайларда орналасқан өзеннің едәуір ұзындығымен байланысты. Жалпы, зоопланктонның және зообентостың дамуы бойынша Тобыл өзені азықтандырудың қалыпты класының су айдыны болып табылады және С.П.Китаевтың «трофикалық шкаласына» сәйкес α–мезотрофты су айдынына жатады.
НЕТРАДИЦИОННЫЙ КОГЕНЕРАЦИОННЫЙ ИСТОЧНИК ДЛЯ ЭНЕРГООБЕСПЕЧЕНИЯ ПРОИЗВОДСТВА СЕЛЬСКОХОЗЯЙСТВЕННОЙ ПРОДУКЦИИ НА ОСНОВЕ ТЕРМОАКУСТИЧЕСКОГО ТЕПЛОВОГО ДВИГАТЕЛЯ
Authors: Zhumazhanov Serik , Mekhtiyev Ali , Sarsikeyev Yermek
Published: October 2021

В настоящее время, в условиях экономического кризиса и изменения условий работы энергосистем обостряется проблема энергообеспечения удаленных потребителей, основными причинами данного явления является дальнейший рост издержек при передаче электроэнергии и удорожание расходов на эксплуатацию систем электроснабжения для данной категории потребителей. В этих условиях, для предупреждения дальнейшего усугубления положения, надо предпринимать пути по нахождению надлежащих организационных мероприятий, условий работы и разработке новых технических решений. Одним из перспективных вариантов технического решения данного вопроса является применение когенерационных источников на основе термоакустического теплового двигателя. Положительным моментом данного технического решения является не только выработка электрической и тепловой энергии, но и возможность для переработки различных отходов сельскохозяйственной деятельности
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TPS UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA PELAJARAN IPS KELAS V SD
Authors: Rachman Zaman Auliau , Subagio Mas
Published: October 2021

Penelitian ini dilatar belakangi masih rendahnya hasil belajar siswa pada pelajaran IPS. Hal ini dikarenakan guru kurang kreatif dalam mengemas pembelajaran, sehingga siswa kurang memahami materi yang diajarkan. Solusinya dengan menerapkan model pembelajaran kooperatif tipe TPS. Tujuan penelitian ini adalah, mendeskripsikan aktivitas guru, siswa dan hasil belajar siswa dalam pembelajaran IPS dengan menerapkan model pembelajaran kooperatif tipe TPS. Penelitian ini merupakan Penelitian Tindakan Kelas. Teknik pengumpulan data yang digunakan adalah observasi, tes dan angket. Data dianalisis dan disajikan dalam bentuk deskriptif kuantitatif. Hasil penelitian menunjukkan bahwa hasil belajar siswa meningkat pada siklus I 64,71% dan pada siklus II 94,18%. Dapat disimpulkan bahwa penerapan model pembelajaran kooperatif tipe TPS dapat meningkatkan hasil belajar siswa di SDN Tawangsari III Sidoarjo.