Respuestas最新文献

{"title":"Storydoing in the emotions of young university students during the process of learning calculus in engineering","authors":"Mawency Vergel-Ortega, C. S. Gómez-Vergel, Jesús Francisco Caravalho-Casanova","doi":"10.22463/0122820X.2414","DOIUrl":"https://doi.org/10.22463/0122820X.2414","url":null,"abstract":"espanolEl estudio de las emociones a traves de los cuentos, constituido como el principal factor de aprendizaje del calculo en ingenieria, constituye el principal objetivo de la investigacion, realizada bajo el enfoque cualitativo y el metodo fenomenologico para profundizar en las respuestas expresadas por los adolescentes de una institucion educativa. El articulo, basado en un estudio cuantitativo, analiza como se desarrolla el proceso de aprendizaje del calculo en las respuestas emocionales, de pensamiento y de sentimiento desde la perspectiva de los estudiantes, que se ven directamente beneficiados o afectados por esta situacion. La muestra consta de 111 estudiantes universitarios del primer al cuarto semestre. Las categorias conceptuales emergentes fueron amistad, rol, innovacion en el aprendizaje, emocion, sentimiento, entorno, apoyo familiar. Los paradigmas emergentes fueron el comportamiento sincronico, la epistemologia interagente, la dinamica de auto-organizacion, la representacion simbolica abstracta. EnglishThe study of emotions using storydoing, constituted as the main factor in the learning of calculus in engineering, constitutes the main objective of the research, executed under the qualitative approach and the phenomenological method in order to deepen in the answers expressed by the adolescents of an educational institution. The article, based on a quantitative study, analyzes how the process of learning calculus takes place in the emotional, thought and feeling responses from the perspective of the students, who are directly benefited or affected by this situation. The sample consists of 111 university students from the first to the fourth semester. Emerging conceptual categories were friendship, role, learning innovation, emotion, feeling, environment, family support. Emerging paradigms were synchronic behaviour, inter-agent epistemology, self-organizing dynamics, abstract symbolic representation","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77878533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of engineering foundations on Colombian entrepreneurship","authors":"H. Castro-Silva, F. Rodríguez-Fonseca, Yamith Alfonso Martínez-Chaparro","doi":"10.22463/0122820X.2431","DOIUrl":"https://doi.org/10.22463/0122820X.2431","url":null,"abstract":"espanolEn este escrito se presentan los resultados de una investigacion empirica relacionada con los factores personales que influencian la disposicion de ingenieros colombianos hacia emprendimientos en su area de formacion. Para cumplir con este proposito se ha implementado una investigacion cuantitativa y correlacional, con una metodologia similar la de estudios relacionados en otras areas geograficas como Europa y Asia. Mediante un analisis factorial se pudo comprar la eficiencia del instrumento de recoleccion de informacion para medir temas clave del estudio como la disposicion hacia el emprendimiento de iniciativas empresariales, el liderazgo, la creatividad, la disposicion a desempenarse profesionalmente como empleado, la creatividad y la inteligencia. Se utilizo un analisis factorial confirmatorio para examinar el ajuste del modelo de medicion de las variables y se emplearon modelos de correlacion y ecuaciones estructurales para examinar las relaciones entre las variables. Las evidencias empiricas de esta investigacion permiten afirmar que para la poblacion objeto de estudio que existe correlacion significativa entre espiritu emprendedor con factores relacionados con la personalidad del ingeniero, pero no con la creatividad y la inteligencia EnglishThis paper presents the results of an empirical investigation related to the personal factors that influence the disposition of Colombian engineers towards undertakings in their training area. To fulfill this purpose, a quantitative and correlational investigation has been implemented with a methodology similar to the related studies in other geographical areas such as Europe and Asia. Through a factorial analysis, the efficiency of the information collection instrument could be compared to measure key issues of the study such as the willingness to entrepreneurship, leadership, creativity, the willingness to perform professionally as an employee, creativity and intelligence. A confirmatory factor analysis was used to examine the adjustment of the variable measurement model and correlation models and structural equations were used to examine the relationships between the variables. The empirical evidences of this investigation allow to affirm that for the population object of study that there is a significant correlation between entrepreneurial spirit and factors related to the personality of the engineer, but not with creativity and intelligence.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73662981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Análisis geométrico de las ralladoras usadas para elaborar el bollo de yuca desde una perspectiva etnomatemática","authors":"C. A. Rodríguez-Nieto, J. Cervantes-Barraza","doi":"10.22463/0122820x.3282","DOIUrl":"https://doi.org/10.22463/0122820x.3282","url":null,"abstract":"En esta investigación se analizó la geometría inmersa en las ralladoras usadas en la elaboración de bollos de yuca. Teóricamente el estudio se desarrolló bajo un enfoque etnomatemático y consideraron las actividades universales. La metodología fue cualitativa desarrollada en tres fases, 1) selección del participante-comerciante de bollos de yuca, 2) ejecución de entrevistas semiestructuradas para conocer su actividad a profundidad y, 3) análisis de los datos. Los resultados evidenciaron que, en una de las etapas del proceso de elaboración del bollo de yuca, se hace referencia a “rallar la yuca”, el comerciante usó una máquina donde se evidencian dos cuerpos geométricos: la pirámide truncada y el cilindro a los cuales se les halló el área total y el volumen y fueron modelados en un software de geometría. Estos resultados pueden ser considerados para diseñar tareas extramatemáticas y proponerlas en el salón de clases como lo sugieren los estándares curriculares de matemáticas de varios países entre los que destacan el NCTM y el MEN, así como establecer conexiones etnomatemáticas entre las matemáticas de la práctica cotidiana y las matemáticas institucionalizadas.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75640308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proposal for a semi-quantitative method for the determination of volatile compounds in cocoa liquors","authors":"Cristian Palencia-Blanco, Alejandra Gualdrón-Zambrano, Isabel Guarín - Henao, Yuly Ojeda-Galeano, Arley René Villamizar-Jaimes, Diego Alejandro Zárate-Caicedo, R. A. Coronado-Silva, Lucero Rodríguez-Silva, L. López-Giraldo","doi":"10.22463/0122820X.2406","DOIUrl":"https://doi.org/10.22463/0122820X.2406","url":null,"abstract":"Seventy-four volatile compounds were identified and quantified from cocoa liquors of the ICS 95 and TCS 01 varieties produced in the department of Santander, Colombia. The compounds were extracted using the solid phase microextraction with head space (SPME-HS) technique, and identified by gas chromatography coupled to mass spectrometer (GC-MS) by comparing the mass spectra of each compound in the Wiley 275L library of mass spectra and the Kovats retention index (IK) ratio. A semi-quantitative method was proposed that included toluene as an internal standard to normalize the degree of recovery between samples and a response factor for each family, calculated using a compound characteristic of that functional group. The results associated with response factors for each family or group of compounds such as alcohols, acids, aldehydes, ketones, esters and pyrazines (2.19, 1.02, 2.84, 0.38, 6.38, 0.88 respectively) were different between families, however, there was no difference between compounds within the same family. The implemented method obtained a DOD and DML of 0.024 µg/kg and 0.037 µg/kg respectively and an accuracy expressed as percentage recovery (of characteristic compounds per family) of 96% on average. According to the precision of the method, the results show that the concentrations have an average coefficient of variation (%CV) of 7.38% assuring repeatability and good precision. Finally, for the analyzed and quantified samples, it was found that the compounds with higher concentration were acetic acid (42.633 mg/kg), 2-phenylethyl acetate (29.44 mg/kg), 2.3-butanediol (345.39 mg/kg), 2-phenylethanol (12.595mg/kg) and 2.3.5.6-tetramethylpyrazine (8.601 mg/kg).","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87526084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emissions from surrounding strata in coalbeds: Guaduas formation (Colombia)","authors":"J. E. Mariño Martínez","doi":"10.22463/0122820X.2404","DOIUrl":"https://doi.org/10.22463/0122820X.2404","url":null,"abstract":"Guaduas formation, emissions, methane desorption, surrounding strata, shales, GHG, CBM, Colombia. ABSTRACT During underground coal mining operations, greenhouse gas emissions are produced, mainly methane. These emissions originated not only from coal, but also from the subsidence of the surrounding rocks. Until now, emissions from surrounding rocks have been calculated from international tables, but it is proposed that they be calculated from gas measurements on coal-adjacent rocks in coalbed methane exploration in which drillings and canisters desorption systems were used in the provinces of Boyacá and Cundinamarca. The gas contents of the surrounding rocks, and thus the emissions, are less than those found in the coal at the same depth. The areas with the highest gas content values in the surrounding rocks are Samacá and Chinavita with contents between 40 and 50 feet3/ton. These values equate to one-third or a quarter of those obtained from the coalbeds close to such samples. The highest gas content did not correspond to the highest coal rank (Socotá) which would be explained by the intense folding and faulting in that area. The gas contents found in the shales (clays) of the Guaduas formation can also be used as a proxy indicator for older and deeper formations that could have good shale gas potential.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88785066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluación de la actividad de biodegradación de microorganismos en la recuperación de suelos contaminados por hidrocarburos","authors":"Jhon Daney Herrera Escobar, Ricardo Alberto Suarez Vera, Wilmer Figueroa Medina","doi":"10.22463/0122820x.1939","DOIUrl":"https://doi.org/10.22463/0122820x.1939","url":null,"abstract":"Se evaluó la actividad de biodegradación de microrganismos en la recuperación de suelos contaminados por hidrocarburos. Se usaron dos concentraciones de hidrocarburos totales de petróleo (TPH) iniciales: 4,7 % y 6.5% a los cuales se aplicó microorganismos degradadores de hidrocarburos (MDH) y microorganismos degradadores de fenoles (MDF). Se empleó diseño experimental factorial 2x2 con dos repeticiones, los tratamientos fueron T1: Suelo con TPH 4,7% + MDH, T2: Suelo con TPH 4,7% + MDH/MDF, T4: Suelo con TPH 6,5% + MDH, T5: Suelo con TPH 6,5% + MDH/MDF y dos testigos T3: Suelo con TPH 4,7% y T6: Suelo con TPH 6,5% sin aplicación de MD. La cantidad de microorganismos aplicada por tratamiento correspondió con la relación de 0,3% en peso del suelo a remediar. A cada uno se agregó suplemento nutricional tripo1ifosfato de sodio y urea 46%. La unidad experimental fueron bandejas plásticas con capacidad de 10 kg c/u de suelo contaminado. Los bioensayos se llevaron a cabo durante 62 días. Los resultados mostraron que el porcentaje de remoción fue mayor en T1: Suelo con TPH 4,7% + MDH y T4: Suelo con TPH 6,5% + MDH con 68% y 66% respectivamente. La utilización de la mezcla Degradador de hidrocarburos (MDH) + Degradador de Fenoles (MDF) en cuanto a % de remoción fue mayor para T2: Suelo con TPH 4,7% + MDH/MDF con un 65%. La prueba LSD Fisher (0.05) determinó diferencias significativas para concentraciones de hidrocarburos A (4,51) y B (6,51) con promedios de 1,60 TPH  y 2,52 TPH respectivamente, lo que significa, a menor concentración inicial de TPH, mayor eficiencia de los microorganismos biodegradadores aplicados.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89312944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interval estimation of the variance of two management dimensions for the characterization of the strategic leader","authors":"W. Palacios–Alvarado, B. Medina-Delgado, H. O. Paipa-Álvarez","doi":"10.22463/0122820X.2439","DOIUrl":"https://doi.org/10.22463/0122820X.2439","url":null,"abstract":"El fenómeno de la transculturización en distintos países es una realidad muy compleja, supone un reto para el sistema organizacional debido a que se tiene que adecuar un direccionamiento estratégico bajo un marco pluricultural, por ende el desarrollo de esta investigación permite analizar dos dimensiones gerenciales: el perfil del liderazgo estratégico y las habilidades administrativas, evaluando factores como; los diferentes estilos de liderazgo, toma de decisiones, trabajo en equipo, y la motivación, entre otros. Se empleó un muestreo simple aleatorio de una población determinada, se calcularon medidas de tendencia central y dispersión, obteniendo estimadores de intervalo de confianza para la varianza muestral como parámetro de interés. Se diseñó y aplicó un instrumento de investigación (cuestionario) el cual se desarrolló a partir de la sistematización y operacionalización de variables, para la validación del instrumentó se empleó el mecanismo de juicio de expertos y para establecer la confiabilidad del mismo se desarrolló una prueba piloto. El instrumento fue aplicado a una muestra de 120 pequeñas y medianas empresas ubicadas en la ciudad de Cúcuta, Colombia y zonas periféricas, los participantes establecieron que las habilidades más idóneas en la gerencia son las del factor motivacional, trabajo en equipo, toma de decisiones y el perfil del liderazgo estratégico transformacional. A la vez se deduce que los gerentes que participaron en el estudio, ejercen un liderazgo transformacional y transaccional, basado en un equilibrio entre recompensas contingentes y estímulos intelectuales con el fin de lograr las metas establecidas en la organización. Palabras clave:","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85888112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Journals in engineering and technology: evaluation and analysis of the incidence of the Publindex classification model","authors":"Mayerly Ivonne Sáenz-Suárez, Luisa Fernanda Uribe-Forero, O. González-Estrada","doi":"10.22463/0122820X.2419","DOIUrl":"https://doi.org/10.22463/0122820X.2419","url":null,"abstract":"This paper presents a descriptive study and scientometrics analysis to evaluate the incidence of the classification model of scientific journals Publindex in the behavior of Colombian journals in the area of Engineering and Technology. Qualitative and quantitative criteria were compiled, the production and contents of the journals were studied, and the national journals of the Engineering and Technology area were compared with the international journals of the same area. As a result, it is concluded that the implementation of the new categorization model served as a stimulus to boost the impact and improve the management of Colombian scientific journals in the study area. However, there is evidence of the need to implement models of editorial management and editorial policies (publication languages, periodicity, type of peer review, number of articles published, etc.) of international journals, and to rethink the classification model of scientific journals in Colombia incorporating guidelines that allow an objective evaluation based on the standardization and control of citation patterns.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84263088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Induction motor speed control in a DSP-based low-THD multi-level converter","authors":"E. Caicedo, Henry Alfonso Sepúlveda-Pacagui, Luis David Pabón-Fernández, A. Pardo-García, J. L. Díaz-Rodríguez","doi":"10.22463/0122820X.2557","DOIUrl":"https://doi.org/10.22463/0122820X.2557","url":null,"abstract":"espanolEste articulo presenta el desarrollo de un algoritmo para el control de velocidad del motor de induccion utilizando el microcontrolador TMS320F28069M, los algoritmos se realizaron en funcion de los limites operativos de la tecnica de control escalar y las caracteristicas del DSP. La tecnica de control junto con el algoritmo de optimizacion utilizado proporcionara las modulaciones con la optimizacion del contenido armonico, basado en el metodo de variacion de frecuencia que adopta un convertidor multinivel, que recibe las senales de control de los GPIO del dispositivo que actuan como control del elemento final propuesto. El convertidor multinivel adoptado convierte el voltaje proveniente del BUS DC en un voltaje de CA casi sinusoidal gracias a los pasos descritos anteriormente, proporcionando la fuente de alimentacion al motor de induccion que lleva intrinsecamente la tecnica de control escalar. EnglishThis paper presents the development of an algorithm for speed control for the induction motor using the TMS320F28069M microcontroller, the algorithms were performed based on the operating limits of the scalar control technique and the characteristics of the DSP. The control technique together with the optimization algorithm used will provide the modulations with optimization of the harmonic content, based on the method of frequency variation adopting a multi-level converter, which receives the control signals from the device's GPIOs acting as the final element control loop proposed. The adopted multilevel converter converts the voltage coming from the DC BUS to a quasi-sinusoidal AC voltage thanks to the steps outlined above, providing the power supply to the induction motor that intrinsically carries the scalar control technique.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76168832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the Transverse Force in the Rayleigh and Mie Approximations for a Capture Beam TEM00 and TEM*01","authors":"Darby Páez - Amaya, Frederic Català - Castro, M. L. Molina Prado, M. Montes-Usategui, N. A. Arias Hernández","doi":"10.22463/0122820X.2405","DOIUrl":"https://doi.org/10.22463/0122820X.2405","url":null,"abstract":"espanolLas pinzas opticas utilizan un rayo laser altamente enfocado para capturar y manipular objetos micro y nanometricos. Se ha demostrado que son un dispositivo prometedor para la investigacion de vanguardia en varios campos, como la microbiologia y la biofisica. La prediccion de las fuerzas opticas presentes en este fenomeno es un problema actual en continua evolucion. Ademas, el reciente uso de haces de vortice con propiedades exoticas como el momento angular orbital, con ventajas como la manipulacion rotacional de las microparticulas capturadas y la reduccion del dano optico en las muestras biologicas (Opticution), hace que el problema sea aun mas complejo. Se presentan expresiones matematicas en los regimenes de Rayleigh y Mie para la fuerza de radiacion sobre una esfera dielectrica capturada por los haces de los modos TEM00 y TEM*01. A continuacion se comparan los resultados teoricos con las mediciones experimentales obtenidas con un dispositivo de medicion directa de la fuerza basado en la deteccion del momento de la luz. EnglishOptical tweezers use a highly-focused laser beam to capture and manipulate micro- and nanometric objects. These have been demonstrated to be a promising devices for state-of-the-art research in several fields, such as microbiology and biophysics. The prediction of the optical forces that are present in this phenomenon is a current problem in continuous evolution. Additionally, the recent use of vortex beams with exotic properties as the orbital angular momentum, with advantages as the rotational manipulation of the captured microparticles and reduction of the optical damage in biological samples (Opticution), makes the problem even more complex. Mathematical expressions in the Rayleigh and Mie regimes for the radiation force on a dielectric sphere captured by TEM00 and TEM*01 mode beams are presented. Theoretical results are then compared with experimental measurements obtained with a direct force measurement device based on light-momentum detection.","PeriodicalId":20991,"journal":{"name":"Respuestas","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73730658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}