bluuebunny/crossref_metadata_2025 huggingface dataset:
Vacunas COVID
Authors: Trejo Cruz Itzel , Cardón-Moreno Marisol , García-Rodríguez Jesús A. , Trejo-Roberto Erick
Published: January 2022

Durante años, el hombre se ha visto obligado a buscar alternativas para resistir las infecciones, por ello se implementaron medidas de salud pública, las cuales han tenido un gran impacto en la salud de la humanidad a lo largo del tiempo. Una vacuna es en definitiva un preparado de patógenos, que pueden estar debilitados o muertos, y esto, se puede aplicar a personas sanas para provocar una respuesta inmunológica; y de esta forma actué protegiendo al organismo frente a agentes infecciosos y así evitar contagios o enfermedades.

El objetivo principal de la vacuna contra COVID-19 es erradicar la enfermedad y proporcionar inmunidad ante este virus de esta manera reducir la mortalidad y los contagios causados por el mismo.
Marketing Digital
Authors: Curiel Jiménez Iris Itzel , Hernández Barreto Ana Laura , Pérez Granados Janik , Almazan Guzman Carlos Abraham
Published: January 2022

El Marketing Digital es un conjunto de actividades que una empresa o persona ejecuta en internet con el objeto de atraer nuevos negocios y desarrollar una identidad de marca. Con la utilización de los recursos tecnológicos y medios digitales existentes para desarrollar comunicaciones directas, destinadas para conseguir una reacción positiva en el receptor virtual. El objetivo de este trabajo es conocer mediante la infografía como el marketing digital ha cambiado conforme los avances tecnológicos, para saber cómo las empresas se han acoplado a estos cambios, y que de algún modo se puede llamar “nuevo”, para innovar la manera de cómo atraer la atención de los clientes.
Comportamiento del consumidor
Authors: Ramírez Sánchez Guadalupe Sarai , Ortiz Gonzalez Heber Jared , García Cruz Kenia Esmeralda
Published: January 2022

En este trabajo  vamos a ver de los factores más relevantes en el área de la mercadotecnia, concentrándonos específicamente en el tema del comportamiento del consumidor y de cuáles son los factores que más influyen para que este se lleve a cabo, al igual de algunos aspectos a considerar para unos excelentes resultados en la organización y/o empresa.
Una ventana a la intimidad: los muebles de cama y de sala en el espacio doméstico de Pachuca, siglo XVII
Authors: Lorenzo Monterrubio Carmen
Published: January 2022

Lo íntimo y lo privado son aspectos que por desgracia poco se conocen en la historia de la vida cotidiana, sin embargo, podemos acceder a esta información a través del estudio de inventarios de bienes (como las cartas de dote), que numeran muebles que se destinaban al ámbito doméstico como las recámaras y las salas, considerados en su mayoría como piezas de lujo obtenidos a través del comercio ultramarino. En este artículo haremos referencia especial a las camas, a los biombos, los rodaestrados y a los espejos, que constituyeron además símbolos de estatus y prestigio en un espacio dominado básicamente por mujeres.
Diseño e implementación del programa de nivelación para obtener la licenciatura en música de la UAEH
Authors: Cortés Cervantes Raúl , Trejo Le´ón Rosalía , Hernández Monterrubio Mauricio
Published: January 2022

En este artículo se presentan los antecedentes para la creación y elaboración del diseño curricular del Programa de Nivelación para obtener la Licenciatura en Música de la Universidad Autónoma del Estado de Hidalgo. Son mencionadas las características del diseño, implementación y la modalidad educativa. Se describe brevemente la estructura general del proyecto, destacando puntos fundamentales de su estructura como el mapa curricular, tiempos del programa y la plataforma educativa utilizada. Los primeros resultados se reflejan en la última sección, que incluye la descripción de los perfiles de los estudiantes involucrados en las dos primeras generaciones, así como su lugar de procedencia. Finalmente, las conclusiones apuntan a la reflexión de la importancia de estos proyectos en las áreas artísticas y de otras disciplinas.
Vegetación disponible para la producción caprina en el Estado de Hidalgo y su influencia en la calidad de la carne
Authors: Buendía Isaac , Chávez Silvestre María F , Aldrette Arteaga Ángel A , Peralta Ortiz Jesús G , Hernández Zarco Miguel A , López Ojeda Juan C
Published: January 2022

El objetivo de esta investigación consistió en una breve investigación bibliográfica acerca del tipo de vegetación nativa capaz de ser aprovechada por el ganado caprino en el estado de Hidalgo. Una breve introducción acerca de la situación de la producción caprina a nivel mundial se describe al inicio, luego a nivel nacional y posteriormente acorde a los municipios de Hidalgo. El tipo de vegetación se relacionó con los hábitos de consumo de las cabras y con sus preferencias de consumo para al final exponer las propiedades de la carne caprina.
Argemone mexicana contiene metabolitos secundarios que controlan hongos fitopatógenos
Authors: Hernández Soto Iridiam , Juárez Maldonado Antonio , Campos Montiel Rafael Germán , Aguirre Álvarez Gabriel , Hernández-Fuentes Alma Delia
Published: January 2022

Las enfermedades en plantas ocasionadas por hongos fitopatógenos limitan la producción de cultivos a nivel mundial, hasta ahora el principal método de control han sido los fungicidas sintéticos, pero su uso descontrolado ocasiona severos problemas a la salud y al medio ambiente. Actualmente se buscan alternativas amigables con el medio ambiente; los biofungidas elaborados a base de extractos vegetales son una alternativa promisora para el control de fitopatógenos. Algunos extractos obtenidos de Argemone mexicana contienen metabolitos secundarios como: alcaloides, terpenoides, flavonoides y compuestos fenólicos, entre otros, los cuales reportan actividad biológica contra hongos que infectan cultivos de interés comercial.
Evolución de la carga de la diabetes en México
Authors: Santillán-Hernández Alma Sofía , Suárez-Reyes Evelyn Magali , Ávila-Pozos Roberto
Published: January 2022

En este trabajo se presenta un estudio sobre la carga de la diabetes en la población mexicana entre los años 2004 y 2014.

Se estiman tasas de años de vida saludables perdidos por género, entidad federativa y edad, utilizando el peso de la discapacidad ocasionada por complicaciones. Los resultados muestran que la tasa de años de vida saludable perdidos para las mujeres se redujo en 13% y para los hombres aumentó en 5%, entre 2004 y 2014. Para las personas con diabetes que no reportaron complicaciones, los años de vida saludable perdidos se incrementaron en este mismo período. Para el año 2014, los estados del centro del país pasaron de un nivel bajo a un nivel medio-alto en las tasas de años de vida saludable perdidos, respecto al año 2004.

Con estos resultados, concluimos que es necesario tener más y mejor información para el buen seguimiento de la población con enfermedades crónicas como la diabetes.
Palliative care: Benefits when included early to treat cancer
Authors: Candelario Santiago Rocío , Ortega Ibarra Edú , Ortega Ibarra Ilse Haide
Published: January 2022

This paper aims to understand palliative care (PC) when included as part of the treatment for patients with cancer and when there is no need to wait for the person to be in an advanced or terminal stage of the disease. Palliative care is considered as the care required by patients living critical stages of life. Therefore, palliative care should be included from the diagnosis phase of the disease in order to go hand in hand with treatment. This situation is of great importance, because as we are human beings, we have emotional, social, and spiritual needs so that we perceive ourselves in a wholesome way.
Dissolution capacity of orange and eucalyptus oils versus endodontic types of cement (in vitro study)
Authors: Ulloa-Alvarez Sebastián M. , Guerrero-Coello María E. , Torracchi-Carrasco José E.
Published: January 2022

Introduction: Endodontic retreatment seeks reentry to the root canal system to remove all filling material, identification and correction of pathological or iatrogenic defects. Objective: This study aimed to compare the dissolving capacity of eucalyptus oil, orange oil, and distilled water versus three types of endodontic cements. Materials and methods: Two hundred and four stainless steel molds were fabricated, where each cement sample was placed to the edge and left to set in the incubator, simulating normal oral conditions for 7 days. Subsequently, the solubility of each cement was analysed by immersing the samples in eucalyptus and orange oil for ten minutes in a static and ultrasonic environment. The solubility of the cement was evidenced by the difference between the weight before and after contact with the oils, data were statistically analysed with the ANOVA test and the post hoc Tukey bootstrap means test with 1,000 repetitions. Results: The control group and eucalyptus oil having no significant effect (p>0.05), the ultrasonic environment was found to be effective (p<0.05), whereas orange oil had better dissolution effects (p=0.004). Conclusions: The most susceptible cement was Sealapex, while the least soluble was MTA-Fillapex in all the solvents studied.
Relación del nivel de consumo de riesgo de alcohol y perfil de estilo de vida en jóvenes de 18 – 24 años de la comunidad de Ixmiquilpan, Hidalgo
Authors: Reyes-Martínez Arlenne D. , Hernández-García Ariadna I. , López-Nolasco Benjamín , Maya-Sánchez Ariana , Trejo-García Claudia A.
Published: January 2022

Esta investigación tuvo como objetivo evaluar el nivel de consumo de riesgo de alcohol y perfil de estilo de vida en jóvenes de 18-24 años de la comunidad de Ixmiquilpan, Hidalgo. La investigación es de tipo básica, con un enfoque cuantitativo y un alcance descriptivo y correlacionar, fue un estudio no experimental y prospectivo. La muestra en el estudio fue de un total de 50 participantes. Para la medición de las variables se utilizaron el Test de Identificación de los Trastornos debidos al Consumo de Alcohol (Test AUDIT) el cual tiene una confiabilidad al Alpha de Cronbach de 0.90. Así mismo se utilizó el  PEPS-I (perfil de estilo de vida) de Pender que está integrado por 48 reactivos tipo Likert. Se concluyó que no existe relación entre el nivel de consumo de riesgo de alcohol y el perfil de estilo de vida en jóvenes de 18-24 de la comunidad de Ixmiquilpan, Hidalgo.
El efecto del COVID-19 en la percepción del bienestar del individuo y la transición hacia la organización digital
Authors: Álvarez Torres Francisco Javier
Published: January 2022

La pandemia del Covid-19 y el proceso de distanciamiento social que se ha vivido en el año 2020 ha traído diversos impactos en la percepción del bienestar de las personas y en la adaptación al trabajo remoto. Este fenómeno ha conducido a reflexionar en el diseño de estrategias en el corto y mediano plazo para atender las implicaciones de bienestar a nivel individual y organizacional en las personas que adaptaron su trabajo a una modalidad remota y para aquellas que no pudieron adaptar sus labores y perdieron sus trabajos. En este estudio se encuestaron a 587 personas quienes describen los cambios de comportamiento, economía familiar, hábitos y dinámicas derivados del proceso de resguardo en casa en los hogares de las familias mexicanas, mayormente del estado de Guanajuato y las adecuaciones en la adaptación al trabajo remoto. Los resultados señalan las afectaciones emocionales, físicas y económicas para aquellos que adaptaron sus condiciones a trabajos remotos pero también dan la pauta para describir como la percepción de bienestar fue afectada en esta etapa. Para los trabajadores remotos estos resultados dan pie al diseño de un modelo de transición de un liderazgo exclusivamente pensado en un entorno presencial hacia un liderazgo humano-tecnológico orientado en promover el bienestar del individuo que dé pauta a un mayor autocuidado del bienestar físico y mental por parte del líder en sus colaboradores y que éste sea un eje fundamental en el desarrollo de la productividad y desempeño de sus colaboradores en la organización netamente digital.
Los pequeños negocios y su consolidación en el mercado local
Authors: Escobar Olguín Héctor Enrique
Published: January 2022

La presente investigación se desarrolló en los municipios de San Pedro de las Colonias, Francisco I. Madero y algunas comunidades ejidales intermedias. Se encuestaron 122 negocios en total. La finalidad del estudio fue evidenciar los problemas u obstáculos (nivel de progreso, evaluación de su desempeño y la manera en que cada uno administra su negocio) que presentan los micro y pequeños negocios para consolidarse en el mercado local. Se empleó una metodología de carácter inductivo y explicativo-descriptivo. En un segundo momento se diseñó y validó un instrumento de 14 ítems, la escala de Likert fungió como una medida de selección de respuestas para facilitar su selección a los encuestados. En los resultados se observa que la mayoría de los negocios tienen una planeación parcialmente adecuada.
Gestión de Inventarios eficiente por la aplicación de Control Interno
Authors: Seijas Rodríguez Beatriz
Published: January 2022

En el mundo organizacional, mantener un inventario para su venta o uso futuro en cadenas productivas, es una práctica común y necesaria. La variedad empresarial, en términos de objeto social, razón de ser, misión, visión y sus respectivos nichos de mercado; definen el posicionamiento de las organizaciones por categoría. De lo anterior, emergen las empresas de venta al menudeo, mayoristas, minoristas, productores, así como los distintos eslabones de las cadenas globales de valor. Sin embargo, el inventario, constituye su factor común, de ahí que administrarlo continúe siendo objeto de estudio. Su gestión eficiente está estrechamente relacionada con los procedimientos de control interno practicados, los cuales permitirán o no, alcanzar los objetivos del negocio. Por tanto, dentro de las normas reguladoras, se destaca como referente el Modelo de Control Interno COSO 2013, siendo el más empleado por las empresas que cotizan en las Bolsas de Valores de Estados Unidos.
Influencia del Covid-19 en las transacciones online antes y durante la pandemia
Authors: Saldaña Pérez Juan Enrique
Published: January 2022

La pandemia por Covid-19 ha transformado en muchos aspectos las transacciones online, en los consumidores. Hoy a más de un año del inicio de la pandemia existe un antes y después del COVID-19, la presente investigación pretende analizar la influencia del Covid-19 en el tipo de transacciones online por rangos de edad antes y durante la pandemia teniendo en cuenta el avance en el uso de las aplicaciones que sufrieron las transacciones online, así como con qué frecuencia utilizaban las aplicaciones para transacciones online ,los gastos antes y durante la pandemia; la intención de realizar transacciones online cuando termine la pandemia y cual dispositivo móvil es el más utilizado. El enfoque que utilizamos es de corte cuantitativo, no experimental, transversal y de alcance exploratorio -descriptivo. Los participantes fueron 173 mujeres y 156 hombres mayores a 20 años. Se elaboró un instrumento tipo cuestionario cuyo nombre es “Transacciones online en tiempos de pandemia por Covid-19” el cual contiene tres secciones: hábitos de navegación, percepción de compra y servicios online, misma que está integrada por 26 ítems de tipo Likert con un (a) de 0.871. Los hallazgos encontrados en esta investigación resultan muy interesantes y pertinentes, mismos que están descritos con puntualidad en el cuerpo de la investigación.
Retos en la administración de recursos humanos ante pandemia Covid-19 en organizaciones de Nuevo León (México)
Authors: Leal Rendón Nury Margarita
Published: January 2022

La presente investigación da a conocer los retos y nuevas prácticas a los que se enfrenta la administración del recurso humano causadas tras la pandemia COVID-19 en organizaciones del estado de Nuevo León, mismas que han permitido adaptarse a las condiciones actuales del entorno. El método que se utilizó es de carácter cualitativa con alcance descriptivo.
Lienzo para construir el perfil de un consumidor para un emprendimiento sostenible
Authors: García Antonio Aniela
Published: January 2022

2021 puede ser un año que fortalecerá el emprendimiento social. Con los sucesos actuales, la tendencia mundial es hacia ver la salud como un nuevo lujo, encontrar modelos de negocio con impacto, hacer más con menos, pero sin comprometer al medio ambiente actual y futuro; y ser consumidores conscientes adquiriendo con responsabilidad (The Economist, 2020; Euromonitor International, 2019). Perfilar al cliente ideal para un nuevo producto, servicio o emprendimiento es un proceso que contiene elementos fundamentales para conocerle y formas estratégicas alrededor del mismo. Una herramienta útil para ello es el buyer persona (Zambito, 2010), sin embargo, en un estudio previo se observó que de diez lienzos analizados, ninguno cubre las necesidades de información para entender a un cliente responsable y consciente, el cual es el target de los emprendimientos sociales principalmente. Se propone un lienzo de buyer persona construido a partir de una investigación cualitativa y bibliográfica, haciendo entrevistas a emprendedores iniciales buscando resolver un problema social, así como prototipado y pivoteo del lienzo. Con ello se propone un canvas de buyer persona para definir el perfil de un cliente de productos, o proyectos con impacto social. Este material puede servir en el aula como apoyo para la educación en emprendimiento, mientras que, para el desarrollo de emprendimiento social, podría servir como herramienta adicional.
La política hacendaria en México, finanzas públicas y competitividad
Authors: Gutiérrez Rangel Héctor Fabián , Jiménez Rico Artemio , Espinosa Mosqueda Rafael
Published: January 2022

La Organización para la Cooperación y el Desarrollo Económicos (OCDE) presentó el Estudio Económico de México donde se analizan las perspectivas de crecimiento económico. En este sentido las condiciones a nivel mundial han mejorado derivado del avance que se tienen en el esquema de vacunación, se prevé que el crecimiento del Producto Interno Bruto (PIB) sea del 5.6%. Asimismo, un escenario al alza mejoraría las condiciones de competitividad si la producción de dosis y distribución se acelera con una mejor coordinación global y la anticipación a las nuevas mutaciones del virus; caso contrario en un escenario a la baja la confianza empresarial y el gasto de los consumidores se vería afectado por la fata de vacunas. En este sentido para México se vislumbra un crecimiento del PIB real del 4.5% respecto al año anterior que fue de -8.5% debido a los efectos de la pandemia. La presente investigación presenta un estudio exploratorio y documental a partir de datos empíricos sobre la situación actual que guarda la política hacendaria en México y de qué manera a afectado en las finanzas públicas y la competitividad de los estados. Los resultados muestran que México cuanta con una solidez en sus finanzas públicas derivado de una política hacendaria que ha permitido eficientar los sistemas recaudatorios, ampliar la base de contribuyentes, el incremento de la recaudación y menor dependencia de los ingresos petroleros. Por otra parte, el índice de competitividad promedio a nivel nacional se ubicó en 45.64 de 100 puntos según el Instituto Mexicano para la competitividad A.C.
Engagement como potencial mediador entre la cultura y el clima organizacional y el Síndrome de Burnout. Diferencia entre grupo de profesionales de la salud que atendieron pacientes Covid-19 vs los que no
Authors: López Botello Cynthia Karyna , Segovia Romo Adriana , Mendoza Gómez Joel
Published: January 2022

La pandemia de Covid-19 ocasionó consecuencias severas en los trabajadores de salud. Experimentaron deficiencias organizacionales en su institución. Esto afectó gravemente su salud mental, aumentando así sus niveles de estrés de una manera significativa provocando Síndrome de Burnout. Son pocos los estudios que hablan acerca de los factores organizacionales que, afectado su desempeño durante la pandemia. El objetivo es determinar si la cultura y el clima organizacional impactan positivamente sobre el engagement y este negativamente sobre el Síndrome de Burnout en los profesionales de la salud que atendieron pacientes Covid-19 y los que no atendieron pacientes. Los métodos estudio observacional y transversal realizado durante la pandemia de Covid-19 en los meses Abril-junio 2020 a 172 profesionales de la salud de Monterrey, Nuevo León, México. El modelo propuesto para los profesionales que si atendieron pacientes con Covid-19 explica que las variables de cultura y clima organizacional (p<0.001) se ven influidas por la variable mediadora engagement para evitar el desarrollo del Síndrome de Burnout. Los resultados arrojaron que el clima organizacional se probó con una p=0.001 (β = 0.351); Cultura Organizacional con una p =0.004 (β=0. 385) y engagement con p =0.000 (β=-0.802). En los profesionales que atendieron pacientes con Covid-19 si se desempeñan en un buen clima organizacional y la cultura de su organización es adecuada y se adapta a los valores y misión tendrán la capacidad de sentirse con un nivel de engagement elevado y evitará la aparición del Burnout.
Frond Base Fracture and Dynamics of Palm Oil Inflorescence Applied With Different Nutrient Sources
Authors: Wijayani Suprih , Wirianata Herry , Gunawan Sri
Published: January 2022

Frond base fracture is an increasingly common phenomenon in oil palm plantations caused by various stress factors. This study aimed to determine the incidence of frond base fracture in the plantation where different nutrient sources were applied (palm oil mill effluent, oil palm EFB, and organic fertilizers) in relation to the dynamics of oil palm inflorescence. The incidence of frond base fracture and the production of male and female inflorescences were observed in 30 sample trees for each nutrient source. Observations were made three times with an interval  monthly. To reveal the research objectives, it used descriptive analysis. The results showed that the routine application of POME increased the susceptibility of oil palms to fractured fronds and the sex ratio was higher other than that of  EFB; the lowest incidence was found in the palm that was given inorganic fertilizers. frond base fracture trees produced fewer female inflorescence, although the number of male ones did not differ between frond base fracture palm and healthy ones.
Circular Economy Model and the Implementation in Vietnamese Coal Mining Industry
Authors: LE Dinh Chieu , DONG Thi Bich
Published: January 2022

The circular economy is the economic model that has been applied for a long time in theworld. This model is applied at all three levels: micro (enterprise-level), intermediate (industry level,industrial zone level), and macro-level (local level, regional level, or national level). Vietnamese CoalMining Industry has been having important contributions to the socio-economic development ofVietnam. However, this industry also causes lots of issues about environmental pollution. In the contextof resource depletion, environmental pollution and the cost of exploiting and processing increases withthe deep exploiting process; the tastes of utilizing resources, minimizing environmental pollution, andcreating more value-added for this industry are inevitable requirements. Because of the tasks, applyingthe circular economy model into this industry (both intermediate and micro-level) is the urgent solutionfor the sustainable development of the Vietnamese Coal Mining Industry. The paper uses a combinationof research methods such as theoretical research, case study research, statistical data analysis, etc., topropose the circular economy model for the Vietnamese Coal Mining Industry and some solutions todeploy this model into the industry's operations towards sustainable development.
A EDUCAÇÃO ESPECIAL NA PERSPECTIVA DA EDUCAÇÃO INCLUSIVA: UMA REVISÃO BIBLIOMÉTRICA
Authors: RIBEIRO ANA LUIZA BARCELOS , Gomes Fernanda Rodrigues Guedes , Azevedo Priscilla Gonçalves de , André Bianka Pires
Published: January 2022

Introdução

Nas últimas décadas tem tido um aumento significativo no número de matrículas de alunos público alvo da educação especial em escolas regulares, levantando assim diversos questionamentos,
A large-scale health survey for a pilot project to reduce the health disparity in Samho-dong, Ulsan Metropolitan City: Results and implications
Authors: Lee Haneul , Ock Minsu
Published: January 2022

Introduction: This study conducted a large-scale health survey in Namg-gu, Ulsan Metropolitan City. In specific, the survey results of Samho-dong, one of the 14 dongs in Nam-gu, and the rest of Nam-gu were compared. Also, the results were compared with the Community Health Survey results for implications.Methods: A total of 2,036 people participated in the large-scale survey. Descriptive analysis was performed to examine the socio-demographic characteristics of these two participant groups. The Chi-Square test or Fisher’s exact test was executed to identify differences between the two groups and the results were compared to the 2014-2019 Community Health Surveys results.Results: The exposure rate of secondhand smoke in public areas and the subjective obesity awareness rate were statistically significantly higher in Samho-dong residents than non-Samho-dong residents in Nam-gu. The same patterns of statistical significance were also observed in the rate of high mental stress, the rate of hypertension diagnosis (≥30), and the annual rate of unmet healthcare needs. Compared with the six-year cumulative data of Community Health Surveys, the rate of hypertension diagnosis (≥30) and the rate of diabetes diagnosis (≥30) of Samho-dong residents were lower than that of Community Health Surveys.Conclusions: It is suggested to prioritize designating smoking zones, strengthening mental health services, and operating chronic disease management programs in Samho-dong. The findings of this study support the need for large-scale surveys on the health status of local areas to reduce health disparities and serve as a foundation to reduce them.
Capacitor Discharge Spot Welding of Aluminum, Part 1: Weldability Assessments
Authors:   American Welding Society, GOULD JERRY E. , LINDAMOOD LINDSEY , MALPICA JULIO , LESTER PATRICK , ZHU DEWEI
Published: January 2022

A key aspect of integrating automotive sheet into automotive production are the costs associated with joining. While the majority of sheet steel assembly is done with resistance spot welding, that has not readily translated to aluminum. Resistance spot welding of aluminum sheet is challenged by high current demand as well as reduced electrode life. In the latter case, direct current (DC) power supplied by state-of-the-art systems has exacerbated the problem. Recently, technology employing capacitor discharge (CD) welding in conjunction with polarity switching has been developed. This work is a first effort in examining the response of resistance spot welding on aluminum sheet to polarity-switching CD power. In this paper, the current range response between medium-frequency DC (MFDC) and polarity-switching CD was investigated. It was found that polarity-switching CD welding offered improved current ranges over MFDC. In addition, replicate mechanical testing cross-tension results were similar, but tensile shear strengths improved nominally 20–25%. Finally, some limited tests were done to assess the suitability of CD resistance spot welding in the presence of an adhesive. Current range tests with and without a prepulse were done, and both showed excellent weldability.
The commognitive perspective of teaching skills of prospective mathematics teachers in microteaching subjects
Authors: Zayyadi Moh , Nusantara Toto , Lanya Harfin
Published: January 2022

This study aims to describe the teaching skills of prospective mathematics education teachers in micro-teaching subjects from a commognitive perspective. This type of research is qualitative research. The research subjects consisted of 15 students of the 2015 Mathematics Education Study Program class, which were taking micro-teaching courses. The instrument used in this study was a rubric sheet—an assessment of prospective teachers' teaching skills. Data analysis techniques used are data reduction, data presentation, and conclusion collection. The results showed that: Prospective mathematics education teachers in preliminary activities often use the word usage component, visual mediator, routine and do not use the narrative component. In the core activities of learning mathematics, teacher candidates use four components commognitive, which are the use of words, visual mediators, routine, and narrative. In the selection of mathematics education, teacher candidates only use the word use component. Commognitive provides an overview of mathematical cognitive-communication and content in the learning carried out.
Student errors in solving HOTS based-match story problems with Newman's theory
Authors: Badriani Indah , Wyrasti Andi Fajeriani , Tanujaya Benidiktus
Published: January 2022

Students' ability for HOTS is critical to acquire. However, the PISA survey in 2018 showed that Indonesian participants were at level 1, and the national exam in 2018 indicated that 40% of students had an issue answering HOTS questions. The problem suggests that students solve questions requiring higher-order thinking skills, causing errors. Therefore, the study aimed to analyze student errors based on Newman's Theory in solving HOTS-based math story problems. The method applied for qualitative research with a descriptive approach. Data collection involved 126 grade IX students using HOTS-based math story tests, interviews, and documentation. Students were grouped into three categories from the HOTS-based math story test results: students with good, medium, and low abilities. This step was to find the average and standard deviation of the scores obtained by respondents when completing the given test. Then three students were selected from each category as subjects. The results showed that as many as 50% of students misunderstood the questions, 20% made transformation errors, and 10% errors in reading, processing skills, and encoding. The high error rate of these students shows the poor ability of students to solve HOTS-based math story problems.
Student’s mathematical connection ability through GeoGebra assisted project-based learning model
Authors: Septian Ari
Published: January 2022

Several previous studies related to mathematical connection abilities and GeoGebra-assisted project-based learning models, but this research focuses on improving students' mathematical connection ability in the Integral Calculus course.  This study examines the improvement of mathematical connection abilities through a project-based learning model assisted by GeoGebra. The research method used was a quasi-experimental design with a pretest-posttest nonequivalent multiple group design. The population is students of the Mathematics Education Study Program at the University in West Java, Indonesia. 1A and 1B students, which are used as samples. The technique of taking the research subject uses purposive sampling. The instrument consisted of a mathematical connection ability test with three essay questions. The test in this study used a pretest and posttest students' mathematical connection ability and the Group Embedded Figure Test (GEFT). The data analysis technique used an independent sample t-test and a two-way ANOVA test. The results showed that the improvement of students' mathematical connection ability who obtained the GeoGebra-assisted project-based learning model was better than students who obtained the project-based learning model. There is no interaction effect of learning models and cognitive styles on the achievement and improvement of students' mathematical connection abilities. The implication of this research is to provide significant changes in student learning habits in integral calculus courses to use technology and foster high self-regulated learning. This research has implications for universities implementing project-based learning models combined with other technology applications in other subjects.
Elementary school students’ mathematical connection in problem-posing activities
Authors: Maulyda Mohammad Archi , Rosyidah Awal Nur Kholifatur , Hidayati Vivi Rachmatul
Published: January 2022

The ability of mathematical connections possessed by students can be seen from the ability of students to compile math problems. This study aims to determine the type of mathematical connection made by elementary school students in problem-posing activities. The research was conducted using a qualitative descriptive method. The participants were 34 fifth grade students (male =16 female =18) of one of the public elementary schools in Mataram, West Nusa Tenggara. Data were collected from the results of student work and interviews. The analysis was carried out qualitatively according to the indicators of the complexity of the problem through problem posing learning. The results showed that there were four types of mathematical problems and their relatedness that occurred in student problem-posing activities, including (1) unsolvable math problems, (2) incorrectly solved math problems, (3) neglected math problems contextual information, and (4) mathematical problems that have complexity and relevance. Based on these results, it can be recommended for further research to determine strategies to improve students' mathematical connections in problem-posing activities.
Students' mathematical critical thinking ability in problem-based learning viewed based on learning style
Authors: Susilo Bambang Eko
Published: January 2022

The development of mathematical critical thinking ability and individual uniqueness in the learning of prospective teacher students needs attention so that they have sufficient provisions in their future work. This study aims to analyze the differences in prospective teacher students' mathematical critical thinking ability in their achievement and improvement from two different learning models and their learning styles. Problem-based learning was used in the experimental group, while the control group used conventional learning. This study used a quasi-experimental quantitative method with the pretest-posttest non-equivalent group design. Data were collected using: mathematical critical thinking ability test and a learning style questionnaire. Data were taken from 56 students of the Mathematics Education Study Program, Universitas Negeri Semarang. Data analysis was performed using independent samples t-test, Mann-Whitney U test, and normalized gain. The results showed that in the achievement and improvement of mathematical critical thinking ability, students who obtained Problem-based learning overall and viewed from a kinesthetic learning style were better than conventional learning. Meanwhile, in terms of auditory and kinesthetic learning styles, the mathematical critical thinking ability of students who obtained descriptive problem-based learning was better. However, in statistical testing, the two groups were not significantly different. Based on these results, Problem-based learning is considered adequate for developing mathematical critical thinking ability, especially for kinesthetic learning styles.
Learner-generated drawings by students with mathematical learning difficulties in finishing open number sentences
Authors: Amir Mohammad Faizal
Published: January 2022

Although MLD students do not have good mathematical performance in completing addition and subtraction operations of integers, MLD students have suggestive ideas in the form of drawings produced in solving open number sentences questions. This study aims to classify the types and identify changes in the drawing produced by MLD students in solving open number sentences questions. This research method is qualitative with a micro generic study approach to understand students' thinking individually and explore drawing changes in solving open number sentences questions between sessions. The research subjects were 2 out of 20 MLD grade 5 elementary school students who produced the most varied drawings in solving open number sentences questions. Data collection techniques used are giving questions and interviews. The results showed that MLD students produced: discrete object drawings by focusing on the cardinality of the quantity of a number; transitions from objects to the number line by focusing on the magnitude of numbers; partitioning the number line using magnitude reasoning; number sentences; and others using verbal reasoning. Changes in the drawings produced by MLD students between sessions indicate the development of students' understanding towards a better direction in interpreting symbolic representations to visual representations. The results of this study contribute to the theory that although MLD students have low mathematical performance. However, MLD students can produce variations and changes in drawings with rich mathematical idea information representing integer operations.
Developing interactive e-module based on realistic mathematics education approach and mathematical literacy ability
Authors: Aulia Enggar Tri , Prahmana Rully Charitas Indra
Published: January 2022

Teaching and learning activities are carried out online during the pandemic situation. This condition makes the teaching and learning process in the classroom requires teaching materials that can support the learning process. However, some teachers still use teaching materials commonly used during face-to-face learning, which is irrelevant for offline learning. Therefore, teachers need alternative interactive teaching materials that can facilitate online learning. This study aims to produce teaching materials in an interactive e-module based on the Realistic Mathematics Education (RME) approach with the content of number pattern that is valid, practical, and have potentially affected the eight-grade students' mathematical literacy skills. The research method used is design research with type of development studies which include two main stages, namely the preliminary design and the formative evaluation. The data collection instruments used were content and media expert validation sheets, student response questionnaires, and pretest and posttest questions to measure mathematical literacy skills. This research produces an RME-based e-module on number pattern material that is valid, practical, and potentially affects mathematical literacy skills. The results showed that the e-module was valid in content and media quality with very good criteria. Next, the e-module has also been practical from assessing student responses with good criteria. Finally, the e-module can potentially improve students' mathematical literacy skills, which is indicated by the increase in students' mathematical literacy skills after learning to use the e-module. In addition, the e-module developed in this study contributes as alternative teaching material for teachers in the online learning system.
Students’ mathematical reasoning ability in solving PISA-like mathematics problem COVID-19 context
Authors: Nurazizah Ismi , Zulkardi Zulkardi
Published: January 2022

This study aims to use the Pendidikan Matematika Realistik Indonesia (PMRI) approach to measure the mathematical reasoning ability of grade VII students in answering PISA-like mathematics problems on number content in the context of COVID-19. This study employs descriptive research with 34 participants from a junior high school in Palembang, Indonesia. Tests, interviews, and observations were utilized to collect data. The method of analysis adopted is descriptive. Google Meet is used to facilitate learning. Learning the PMRI technique was accomplished in this study by assigning sharing and jumping tasks. That is, assignments for students to discuss with each other have different levels of difficulty, followed by two exam questions. In the context of COVID-19, the test questions are PISA-like maths problems. The results show that students’ average mathematical reasoning skill is 63,037, with mathematical manipulation a common indicator. Most students have exhibited indications for presenting conjectures. However, only a few students have put down indicators for drawing logical conclusions, so drawing logical conclusions is an indicator that students rarely see. Overall, grade VII students' mathematical reasoning skills in answering PISA-like mathematics questions on number material in the context of COVID-19 utilizing the PMRI approach is good since students are used to modeling contextual problems such that mathematical manipulation indicators occur.
Students’ perception of communication and collaboration effectiveness in online learning mathematics during the COVID-19
Authors: Supiyati Sri , Halqi Muhammad , Rasidi Ahmad
Published: January 2022

This study aims to determine student perceptions of the effectiveness of communication and collaboration in online learning mathematics during the COVID-19 pandemic. This study was an ex-post-facto with an exploratory, descriptive approach. The sample of this study was 26 students of the Mathematics Education Study Program at the Universitas Hamzanwadi. The respondents of this study were 26 students of Mathematics Education at Hamzanwadi University, five males and 21 females, which were obtained using the convenience sampling technique. This research was conducted in the even semester of the 2020/2021 academic year. The instrument used is a closed questionnaire with answers that are degraded according to the Likert scale and validated by experts. The research data were analyzed descriptively and inferential statistics. The results showed that (1) the perception of mathematics education students was > 58% of students giving a negative response to every question about the effectiveness of communication and collaboration in online learning; (2) ineffective communication and collaboration in online learning with an average student perception score of 2.16; (3) there is a positive and significant relationship between communication and collaboration in online learning during the COVID-19 pandemic with a significance value of 0.000 which is smaller than the alpha test value of 0.05 (<0.05); (4) the relationship of communication and correlation in online learning is strong or high with a correlation coefficient value of 0.677.
Analysis of different impact rates on the forecasts cost of building project using sensitivity analysis techniques
Authors: Godwin Adie Akeke  , Melody Sunday Osok
Published: January 2022

Over the years, Life Cycle Costing (LCC) has been recognized and used as an important technique for evaluating, forecasting and discounting the future costs of building to the present day value, from conception, design to completion, operation, maintenance, down to decommissioning. This work presents a study of Analysis on different discount rate of the forecasts cost of building project using sensitivity analysis techniques, the case study being Calabar International Conference Center (CICC) building project. Life cycle cost analysis was conducted and forecast for 51 years using Net present value (NPV) with the following discount rates 4%, 5%, 6%, 8%, 10%, 12% and 13% respectively. Results showed that the lower the discount rates, the higher the cost value and via vasa. The building had a positive value >0 indicating a significant benefit at the end of the study period. The percentage contribution of the discount rate on the initial cost, salvage value and the life cycle cost indicates that at 4% the initial cost accounted for 85% of the discounted cost, life cycle cost 13% and salvage value 2%. The salvage value recorded 0% at 12% and 13% discount rate The higher the discount rates the higher the discounted initial cost and the lower the life cycle cost.
Occupational Therapy Education in Bangladesh during COVID-19: Students’ voice
Authors: Sk. Moniruzzaman  , Nayan Kumer Chanda  , Md. Saddam Hossain  , Md. Habibur Rahman  , Mohuya Akter  , Salma Akter  , Kaniz Fatema
Published: January 2022

The COVID-19 has rapidly changed in higher education all across the world. As a result, education has transferred face-to-face teaching to online education platforms, which directly affects the quality of education. The study aimed to explore the impact of the COVID-19 pandemic on online Occupational Therapy (OT) education in Bangladesh through the student’s perspectives. A cross-sectional online survey was performed to conduct the study through email.160 undergraduate Occupational Therapy students were selected by comprehensive sampling technique. Self-developed structured survey questionnaire and five point Likert scale were used for data collection. Descriptive analyses were used to analyze survey results. Data were obtained from 114 responses. Results indicated that males were 34% and females were 66%. The study findings that most participants were used Zoom and mobile phone. They had an average of 10-12 hours weekly screen time for institutional lectures and 3-5 hours average weekly screen time for self-study. The reported health-related problems were eye problem 74.6%, attention problem 71.1%, headache 70.2% and 57% neck and back pain. During the online education, 59.6% participants faced ‘always’ difficulties in practical learning. 98.2% faced internet disconnection, 70.2% and 43% audio and video interruption and 39.5% freeze screen during internet use. Participants developed new skills in the pandemic where 78.9% were learned household activities. Strength of the online education was participants engaged in the class from anywhere. The study has broad implications for the field of OT education. Participants recommended for improving internet connectivity, provide free internet packages, lecture method up-gradation, and e-library facilities for future online education.
Effectiveness of warm herbal compress on oxytocin hormone and breast milk production
Authors: Laksonowati Setyo Mahanani , Runjati Runjati , Ta'adi Ta'adi , Mulyantoro Donny Kristanto , Kholifah Kholifah
Published: January 2022

Background: Breast milk is the best food for babies, needed for optimal growth and development. The lack of milk production influences the low coverage of exclusive breastfeeding. Increasing breast milk production could be done non-pharmacologically, using warm herbal compresses as breast care.Purpose: Analyze the effect of warm herbal compresses as breast care on oxytocin hormone and postpartum mother's milk production. Methods: Quasi-experimental design pretest-posttest with the control group, respondents were 36 normal mothers on the third day of postpartum; 18 respondents intervention group, and 18 respondents control group. Warm herbal compresses were provided once per day with 20 minutes on each breast for three days. The oxytocin hormone was measured pre and post three days of treatment, the volume of breast milk was measured pre, post 2, and 3 days of treatment.Results: The intervention group's average difference in oxytocin hormone was 24.65 pg/ml, the control group was 2.48 pg/ml (p<0.01). The average increase in milk production pre and post-three days of treatment in the intervention group was 32,250 ml. In the control group, 26,472 ml (p<0.01), there was a significant difference in the average milk production between the two groups.Conclusion: Warm herbal compresses as breast care affects the oxytocin hormone and postpartum mother's milk production.
A technique to reduce arms fatigue on intradialytic
Authors: Isnaini Nur , Kusumantri Megarini
Published: January 2022

Background: The hemodialysis process that takes 4 to 5 hours may lead to various problems, including arms' fatigue on the forearm with attached Cimino access. A technique is required to overcome this fatigue.Technique: By using a supportive hand pillow made by adjusting the position of the elbow and the length of the arm. The pillow is placed under the patient's forearm with Cimino access. Trial usage of this pillow was conducted on two persons for two cycles of hemodialysis. Both stated that arm fatigue was reduced and more comfortable.Conclusion: Using hand pillows for hemodialysis patients is favorably beneficial to reduce forearm fatigue during the Intradialytic phase.