bluuebunny/crossref_metadata_2025 huggingface dataset:
THE EFFECT OF PHET-COLORADO ASSISTED PROBLEM BASED LEARNING LEARNING MODEL ON LEARNING OUTCOMES AND PROBLEM SOLVING DYNAMIC ELECTRICAL MATERIALS IN JUNIOR HIGH SCHOOLS
Authors: H Mona Mahyuny , W., B Wasis Wuyung , , Roma
Published: July 2022

This study aims to determine the effect of applying the PhET-Colorado-assisted problem-based learning (PBL) learning model on the learning outcomes and problem solving of junior high school students in class IX on Dynamic Electricity. The study was conducted using experimental quasi pretest-postest in one of the country’s junior high schools on the ground. Sample taking technique using purposive sampling. The research sample consisted of two classes each consisting of 32 students, class IX-J was an experimental class that applied the PhET-Colorado-assisted problem-based learning (PBL) model and class IX-D was a control class that applied study conventional. The research instrument used was a multiple-choice test with 4 answer choices to measure cognitive learning outcomes and description tests for students' problem-solving tests on dynamic material. The average pretest and posttest data on learning outcomes in the experimental class were 49.37 and 80.31, while those in the control class were 51.09 and 66.40, respectively. The average pretest and posttest data on student problem solving in the experimental class were 35.31 and 72.12, while in the control class they were 36 and 66.40, respectively. Data were analyzed using the Manova test (multivariate analysis of variance). Based on the hypothesis test, there are significant differences in learning outcomes and problem solving with the application of the PhET-Colorado-assisted Problem Based Learning (PBL) model on science material in junior high schools, so that there is an effect of the PhET-Colorado-assisted Problem Based Learning (PBL) model on learning outcomes and solving student problems. The percentage increase in N-gain learning outcomes in the experimental class was 62.09 in the medium category and the control class was 30.48 with the medium category, and problem solving in the experimental class was 56.90 with the medium category and the control class was 22 with the low category
THE EFFECT OF THE PROBLEM-BASED LEARNING MODEL ON THE SCIENTIFIC ARGUMENTATION ABILITY OF STUDENTS ON ENVIRONMENTAL POLLUTION MATERIALS
Authors: Wahyuni Riska , Simatupang Halim , H Santi
Published: July 2022

The purpose of this study was to determine the effect of implementing the Problem Based Learning (PBL) learning model on the ability of scientific argumentation and how much influence the PBL learning model has on the scientific argumentation ability of students on environmental pollution material in class VII, 1st Junior High School Angkola Muaratais. This study uses a true experiment method with a pretest-posttest control group design. The population in this study were all students of class VII, with two samples, namely the experimental and control classes. There are two samples in this study, namely the experimental class and the control class. The sampling technique used is simple random sampling. Randomly selected samples were from classes VII-A and VII-B. The research instrument used is a scientific argumentation ability test instrument using five essay questions. Analysis of the data used in this study was performed by performing an independent sample t-test and a Cohen's d test. The results of the pretest showed that the initial abilities of students in grades VII-A and VII-B were the same. Class VII-A was chosen as the experimental class, and Class VII-B was chosen as the control class. After that, treatment was given using the PBL learning model in the experimental class and conventional learning using the lecture and question and answer method in the control class. Based on the posttest results, it was found that the PBL learning model had a significant effect on the ability of scientific argumentation on environmental pollution material in class VII 1st Junior High School Angkola Muaratais with a value of tcount > ttable (3.828 > 1.684) using the independent sample t-test test. The influence of the PBL learning model on students' scientific argumentation skills is categorized as strong, with a Cohen's d value of 1.168. It can be concluded that the PBL learning model can have a significant influence on students' scientific argumentation skills and the effect obtained is strong.
INFLUENCE OF PBL SETS TO INCREASE STUDENT LEARNING OUTCOME AND ACTIVITIES IN CLASS VIII ON LIQUID PRESSURE MATERIAL AT SMP NEGERI 35 MEDAN
Authors: Aisyah Siti , Susanti Nora , Mulyani Sri
Published: July 2022

This research aims to determine the influence of the application of   PBL SETS learning model on the learning outcomes of class VIII SMP Negeri 35 Medan and to determine the influence of the application of the  PBL SETS learning model on the student learning activities of class VIII students of 35th junior high school Medan. The Research type used was quasi-experimental type. The sample of this study was 60 students of class VIII 35th junior high school Medan. The experimental class was class VIII5  and control class was VIII6 . The  instrument of research used was in the form of 10 items of essay questions and student activity observation sheets. The  design of research used is the Nonequivalent Control Group design. The Research data collection techniques used were test and observation. The results of this study indicated a significant influence on learning outcomes of student. The average of  student learning outcome in experimental class was greater than in the control class, namely the experimental class value was 73.83 and the control class value was 44.9. The results of the t-test independent samples test showed that the two-tailed significance <0.005. The results of data analysis showed the implementation of the  PBL SETS learning model and approach  can increase student learning outcomes in class VIII of SMP Negeri 35  Medan on the subject of Pressure in Liquids and the application of the  PBL SETS learning model can improve the learning activities of class VIII students of 35th junior high school Medan on the material Pressure on Liquids.
THE DEVELOPMENT OF STUDENTS’ WORKSHEET BASED ON STEM (SCIENCE, TECHNOLOGY, ENGINEERING, MATHEMATICS) TO IMPROVE CRITICAL THINKING ABILITY ON HUMAN EXCRETION SYSTEM MATERIALS
Authors: Simanullang Meiranda , Simatupang Halim , Pulungan Abdul
Published: July 2022

This study aims to see the feasibility based on the assessment of material experts, linguists & education experts, the responses of educators and students as well as the effectiveness of the STEM (Science, Technology, Engineering, Mathematics) based students’ worksheet to improve the critical thinking skills at VIII SMP students. The sample of this study was students of class VIII-10, totaling 30 people. this type of research is research and development (R&D) using the ADDIE model. The instrument used in this study consisted of a material expert validation questionnaire, linguist & education expert, a questionnaire for educators and students' responses. The test is in the form of an essay to measure the level of students' critical thinking skills on the human excretory system material. Based on the results of the study obtained data from material expert validation of 70.16, validation of linguists & education experts 69.04 with each in the appropriate category. The response of students in the small group trial with a sample of 3 people was 75.97%, while in the limited group trial the percentage of student responses with a sample of 30 people was 77.79% with each criterion very feasible, so based on the results of the students’ worksheet validation This is suitable for use in the learning process. Students’ worksheet which is designed effectively to improve students' critical thinking skills, the results of students' critical thinking skills are obtained with an average N-Gain value of 0.77 with high criteria.
Practicality and Effectiveness of Learning Tools with Predict-Observe-Explain Assisted Conceptual Change Text to Minimize Students’ Misconceptions
Authors: Rante Susanna Vonny N. , Tolla Ismail , Arsyad Nurdin
Published: July 2022

In achieving learning objectives, a lecturer must be able to design the learning tools he uses by considering the analysis of the needs of his students. This study is part of the research and development process to create learning tools with Predict-Observe-Explain (POE) assisted by Conceptual Change Text (CCT) in minimizing misconceptions of prospective elementary school teacher students. The main focus of this research is to test the level of practicality and effectiveness of these learning tools by involving users, namely lecturers and students. Data was collected using instruments in learning implementation observation sheets, student activity observation sheets, and learning outcomes tests. The data collected was analyzed quantitatively by calculating the average score to determine whether the product is practical and effective to use. The results of this study indicate that the learning tools are proven to be practical and effective so that they are feasible to be used more widely. With these findings, it is hoped that lecturers can design similar learning products to improve mastery of fundamental natural science concepts for prospective elementary school teachers.
The Effect of Achievement Motivated Students and Mastery of Information Technology on the Results of an Elementary School Teacher Competency Test
Authors: Safihu La Ode , Bundu Patta , Abdul Gani Hamsu
Published: July 2022

This study aims to ascertain the effect of achievement motivation and technological mastery on the results of a competency exam administered to elementary school teachers in Ambon City in 2015. This research comprises a quantitative analysis of 224 elementary school teachers who took the 2015 teacher competency exam. Multiple linear regression was used to analyze the data and test hypotheses with the assistance of SPSS Windows Version 24. The study discovered that achievement motivation (X1) and mastery of technology information (X2) both have a favourable and substantial effect on the competency test results of elementary school teachers (Y) in Ambon City. Thus, it is recommended that teachers develop a sense of achievement and proficiency in using information technology.
Evaluation of Selected Mechanical Properties of Blighia sapida K. Koenig Wood
Authors: Mobolaji Olayanu Clement , Adeyemo Segun M. , Majekobaje Adelodun R. , Olusola Areo O. , Omole Ayodeji O. , Oyelere Abiodun T. , Alagbada Olanrewaju R. , Oluborode James O.
Published: July 2022

Over exploitation of economic tree species in the forest due to their high demand has made wood loggers shift their attention to Lesser Used Species such as Blighia sapida as alternative source of wood in Nigeria. The knowledge on the quality of the wood would to a long extent enhance the utilization of the wood. However, little information is provided on the mechanical properties of the wood species and the general belief among most wood users is that it is not a good timber species and that it cannot be utilized for any wood-based products that require strength. Therefore, investigating the mechanical properties of the timber species for better acceptability in the timber market becomes necessary.
Three standing trees of Blighia sapida were purposively felled in the University of Ibadan community, Ibadan, Nigeria. 500 mm billets were gotten from wood dics at the top, middle, and base of the tree and each partitioned into three, the outerrwood, middlewood and the innerwood, in line with specified standard for each selected mechanical property test (Modulus of Elasticity, Modulus of Rupture, Impact bending strength, and Compressive strength parallel to grain) were all evaluated.
Modulus of rupture with mean value 118.47 ± 1.96 N/mm2, ranged from 103.67 ± 3.42 to 144.26 ± 3.68 N/mm2. Modulus of Elasticity with mean value 10649.99 ± 167.51 N/mm2, ranged from 9237.14 ± 399.22 to 12877.35 ± 284.61 N/mm2. Compressive strength parallel to grain with the average value 52.86 ± 0.81 N/mm2, ranged from 42.88 ± 1.32 to 62.62 ± 1.65 N/mm2. Mean impact bending strength was 28.05 ± 0.58 N/mm2, ranged from 24.56 ± 0.86 to 35.09 ± 1.71 N/mm2.
The average Modulus of Rupture and Modulus of Elasticity of Blighia sapida wood indicated that the wood falls within the category of medium construction strength timbers. The maximum compressive strength value for Blighia sapida wood revealed that it compared well with other economic tree species that are widely known for various structural applications. Therefore, the general belief among wood users that it is not a good timber species and that it cannot be utilized for any wood-based product that requires strength is far from the truth. It can therefore be concluded that the timber can be used for some building constructions, sheeting and lining, furniture, carpentry, veneer wood production, cabinet work, and so on.
The Effectiveness of the PONTA Learning Model Based on Blended Learning in Vocational High School
Authors: Ponta Tasri , Abdul Gani Hamsu , Muis Mappalotteng Abdul
Published: July 2022

This study aims to determine the effectiveness of the blended learning-based PONTA learning model in vocational high schools. The model developed consists of 5 stages, namely: preparation, observation, negotiation, transfer, and apply. The trial design was carried out using a pretest-posttest group design. The test was carried out on class XII students of SMK Negeri 3 Makassar and SMK 10 Makassar. Data analysis used (1) gain score index data analysis; (2) normality analysis; (3) homogeneity analysis. The results showed that the results of testing the effectiveness of the blended learning-based PONTA learning model at SMK 3 Makassar obtained an n-gain value of 0.40 in the medium category with 81.92% learning completeness in the high category. While at SMK 10 Makassar, the n-gain value was 0.42 in the medium category with 83.24% learning completeness in the high category. Based on the research results, blended learning-based PONTA learning model in vocational high schools is effective and feasible to use to increase knowledge of occupational safety and health in the environment.
The Development of Mathematical Learning Models that Utilize Multiple Intelligence of Junior High School Children in Takalar District
Authors: Karmila Karmila , Upu Hamzah , Anas Suwardi
Published: July 2022

This research is development research which aims to develop mathematics learning device based on project with role playing method in social Arithmetic material in class VII at SMP which is valid, practical and effective. The referred learning devices cover: (1) lesson plan, (2) student’s book, (3) project worksheet, and (4) assessment sheet. The model of development device which was used in this research adopted from Plomp which covered five stages, namely: (1) pre-investigation, (2) design, (3) realization/construct, (4) test, evaluation, and revision, and (5) implementation. However, this research was conducted until stage (4) so that the result only obtained the final prototype of a learning device which was ready to be implemented widely. After testing the validity and reliability, the whole components of the learning device and instrument (prototype) were stated as valid and reliable with minor revision. Thus, revision and correction were done based on the suggestions from the experts and obtained prototype II, and then tested. The testing process was done to produce practical and effective device. In testing process, the device which was produced had already been practical because all aspect in the device component mostly implemented. The device also considered effective because the students’ activity had fulfilled the set criteria, the teachers’ ability in learning management was in high category, mostly the students gave positive response toward the learning based on project with role playing method in social arithmetic material, and all the students had reached the minimum mastery criteria. Thus, the developed learning device fulfilled the terms of appropriateness, practical and effectiveness. Based on the implications of the result of this research it is suggested that: (1) the researchers who wish to develop further study, are expected to notice the research limitations, so that the next research can complete the result of this study, and (2) the development of the learning device such this type should done to other topics to make students interested, enjoy, and active, which can construct their knowledge in learning Mathematics.
Deep Learning Techniques for COVID-19 Detection Based on Chest X-ray and CT-scan Images: A Short Review and Future Perspective
Authors: Mijwil Maad M. , Aggarwal Karan , Doshi Ruchi , Hiran Kamal Kant , Sundaravadivazhagan B.
Published: July 2022

Today, humans live in the era of rapid growth in electronic devices that are based on artificial intelligence, including the significant growth in the manufacture of machines that perform intelligent human tasks to solve complex situations. Artificial intelligence will significantly influence the development of many domains, especially the medical domain, which relies heavily on artificial intelligence techniques in diagnosing disease data and manufacturing drugs and vaccines. Artificial intelligence has unexpectedly advanced in helping physicians and healthcare workers save many lives, especially during the spread of the COVID-19 virus. This article reviews some literature that have applied deep learning techniques to detect COVID-19 based on chest x-rays and CT-scans images. This article concluded that deep learning techniques have a fundamental and significant role in diagnosing a big dataset of images and assisting specialists in determining whether a person is infected (positive cases).
Comunicar la pandemia
Authors: Balsas María Soledad
Published: July 2022

En este artículo exploro algunos de los dilemas que trajo aparejados la comunicación de la pandemia tal como se manifiestan en el debate público en la Argentina. A partir de la sistematización de los aportes teóricos inherentes al campo de referencia, así como la consideración de algunos antecedentes de investigación sobre el tema, y el análisis del tratamiento del caso Lara Arreguiz en la prensa opositora en la Argentina, señalo los límites éticos, políticos y hasta científicos de algunas propuestas que contribuirían a consolidar una ciudadanía del miedo. En este sentido, insisto en la necesidad de incluir en el debate público visiones mejor informadas sobre el rol de las audiencias con miras a promover una comunicación democrática.
Los medios ante los debates sobre el aborto en Argentina.
Authors: Cernaz Valentino
Published: July 2022

El presente artículo se propone, principalmente, recuperar críticas de la teoría feminista hacia la obra de Jürgen Habermas, en función de realizar un análisis sobre los discursos planteados en varios medios de comunicación en el marco de los debates sobre el aborto en la Argentina. En ese sentido, la noción de esfera pública nos resultará fundamental. Además, se recurrirá a las experiencias de autoras feministas de los siglos XIX y XX para enriquecer el trabajo y contrastar sus planteos con los del movimiento feminista en la actualidad. La observación de una selección de notas de diversos medios nos brindará la posibilidad de desglosar distintos argumentos, y pensarlos en relación con las teorías utilizadas. El análisis aquí realizado también tiene como uno de sus objetivos el dar lugar a la posibilidad de pensar nuevas investigaciones sobre la esfera pública en Argentina.
educación sexual como causa militante
Authors: Chervin Mariano
Published: July 2022

Este artículo examina cómo se pone en acto la ESI en una escuela secundaria de la Ciudad Autónoma de Buenos Aires (CABA) a través del análisis de producciones visuales como cartelería y publicaciones en redes sociales elaboradas por docentes y estudiantes. Para ello, se realizó un análisis discursivo para reconocer las escenas enunciativas que estas producciones provocan. Argumentamos que estas escenas delimitan guiones imaginarios acerca de lo decible, lo deseable y lo esperable en torno a los modos de performar el género y la sexualidad en la escuela. Para el caso aquí indagado, analizamos las estrategias de producción de una subjetividad militante, un guión que busca comprometer al estudiantado con las causas de los feminismos y el activismo sociosexual. El trabajo se basa en un estudio cualitativo más amplio realizado durante el ciclo lectivo del año 2019 y principios de 2020 que consistió en visitas sistemáticas a la institución, observaciones de distintos momentos escolares, entrevistas a docentes, estudiantes y autoridades, y el relevamiento de documentos escolares.
participación en la comunicación radial del patrimonio cultural como emergente social
Authors: Hernández Mailé , Caballero Rivacoba María Teresa
Published: July 2022

El artículo aborda los presupuestos teóricos de la comunicación del patrimonio cultural en radio de los centros históricos urbanos como proceso bidireccional de puesta en común de significados. Se reconoce la participación del público en el proceso comunicacional para eliminar las asimetrías que se gestan entre emisores y receptores. A través de la revisión crítica documental (revisión de textos clave en el campo de estudio y artículos publicados en base de datos científicas: Scopus) se construye el cuerpo teórico que de manera holística pretende conformar un acercamiento a la temática desde la sociología de la comunicación, el paradigma crítico latinoamericano y la educación popular.
Desbordar el enfoque
Authors: Palma Karla , Salinas Claudio , Stange Hans , Valenzuela Moisés
Published: July 2022

En este artículo buscamos responder ¿qué se estudia cuando se analiza la relación entre comunicación y desastres en América Latina? Pesquisamos 52 artículos publicados a lo largo de casi dos décadas en 18 revistas académicas latinoamericanas. A partir de esta indagación identificamos cómo la respuesta a esta pregunta varía de acuerdo a marcos teóricos y metodológicos (y a las relaciones que se dan entre ambos), así como a los enfoques temporales y espaciales desarrollados.

Para realizar el análisis leímos los artículos, los codificamos utilizando una matriz ad hoc y desarrollamos un análisis de las macro-proposiciones que emergieron. Esto nos posibilitó generar un estado del arte de las relaciones entre comunicación y desastres en Latinoamérica.

Respecto de las conclusiones principales, rescatamos que la definición de comunicación, usualmente, se asienta en una perspectiva instrumental, que la entiende principalmente como emisión de mensajes. Consistente con lo anterior, identificamos que mayoritariamente el enfoque es de carácter mediocéntrico. Es decir, no se piensa a la comunicación como constitutiva de los fenómenos, sino más bien como un actor de segundo orden.

Exploramos el camino recorrido por las investigaciones, caracterizamos sus principales aportes y proponemos una lectura, a la luz de la posibilidad de pensar la relación entre comunicación y desastres, desde la forma y fondo, y no tan solo desde una mirada agregativa de la comunicación hacia los desastres.
Tensiones epistemológicas, éticas y metodológicas en la colaboración entre cine documental y ciencias sociales en el trabajo con comunidades rurales de Misiones.
Authors: Roa María Luz
Published: July 2022

El artículo reflexiona sobre las tensiones epistemológicas, éticas y metodológicas en las colaboraciones interdisciplinarias entre cine documental y ciencias sociales en el trabajo con comunidades rurales. Para ello, se analiza críticamente el caso de la realización del film “Raídos”, el cual se basa y construye a partir de una investigación etnográfica sobre las subjetividades de jóvenes cosecheros/as de yerba mate de la provincia de Misiones, Argentina. A partir de estas críticas, se propone apelar a una transdisciplina desde una micropolítica colaborativa reciprocitaria en un horizonte decolonial.
Hipertexto, multimedia e interactividad del ciberperiodismo
Authors: Díaz Rodriguez Flavio César , García Martínez Verónica
Published: July 2022

Se presenta un estudio de los recursos digitales de un periódico de circulación regional, en cuanto a los uso y limitaciones del hipertexto, la multimedia y la interactividad, variables inherentes al ciberperiodismo.  A través del análisis de contenido cuantitativo se dio seguimiento a sus publicaciones durante los meses de octubre a diciembre de 2021 para lo cual se diseñó un instrumento de recogida de datos a fin de observar la manera y frecuencia con que se utilizan estos recursos en su plataforma digital. Se concluye que el sitio web del diario ha desarrollado las características del ciberperiodismo de manera desequilibrada y parcial. Los elementos periodísticos que constituyen los géneros por el dominio de contenidos informativos suelen ser breves en texto, marginando la estructura hipertextual intranodal y la capacidad de otorgar fuerza con recursos multimedia.
lectora nada común
Authors: Argüello Guzmán Luis Alfonso
Published: July 2022

En este artículo se analiza el papel de Virginia Woolf como lectora, a través de sus reflexiones sobre la lectura, registradas en novelas, artículos, ensayos y el diario personal. Esta revisión revela que sus lecturas se desplazan entre el pasado y el presente de su tradición literaria, en presencia del tiempo contemporáneo. Está documentada con su ejercicio de escritura de ensayos, reseñas o artículos que surgen al combinar precisión, riqueza bibliográfica, claridad argumentativa y familiaridad con el propósito de afirmarse como guía de futuros lectores. Estos desplazamientos corresponden a un ejercicio intelectual de resistencia en el que Woolf describe la importancia de las bibliotecas como un lugar donde se deben romper las tradiciones que refuerzan los privilegios y las exclusiones.  Para el desarrollo de esta indagación se empieza con una selección de ensayos y artículos que contienen anotaciones sobre el oficio de leer. Las referencias de Woolf sobre el poder de las bibliotecas y los lectores son consideradas en novelas como “las olas” y “Entre actos”, en anotaciones del “Diario” y el “Diario de una escritora”, al igual que en libros como Un Cuarto Propio, Tres guineas y una carta a un joven poeta.
identidad cultural, un asunto radial
Authors: Vazquez Luna Tania
Published: July 2022

El actual contexto cubano se aboca a un prolífero crecimiento de la comunicación y el protagonismo de los espacios locales y las comunidades. De ahí que las experiencias de las radios municipales, se hacen más significativas, por las posibilidades que estas generan al entrever a la comunidad con sus espacios de encuentro con la realidad social y como mecanismos de socialización de la identidad cultural. En este marco se inserta la presente investigación que tiene como objetivo caracterizar las lógicas de producción asumiendo como escenario de estudio una emisora municipal: CMFK “Radio Cumanayagua”. Para ello la alternativa metodológica propuesta es la cualitativa. Las técnicas escogidas, fueron la observación no participante; la revisión de documentos; la entrevista en profundidad y el análisis de contenido. Las lógicas de producción de la emisora radio Cumanayagua se caracteriza por un escaso tratamiento de la identidad cultural anteponiéndose mediaciones vinculadas a la competitividad industrial afectada por una tecnológica deficiente; competencias comunicativas que no logran desentrañar los hábitos de la audiencia; poca diversidad de los géneros amparado por una estructura preestablecida en los niveles y fases en la toma de decisiones; ideologías profesionales que tributan a la escasa creatividad de los profesionales y la rigidez incorporada a las rutinas productivas de la emisora.
Entre Prácticas y Profesionales
Authors: Lanza Matías Federico
Published: July 2022

En el año 2020 frente a la pandemia de Covid-19, la cátedra de Observación y Prácticas de la Enseñanza en Educación Física 2 (1), perteneciente al profesorado en Educación Física de la Universidad Nacional de La Plata, organizó entrevistas a profesores y profesoras de escuelas secundarias, con el objetivo de generar intercambios y reflexiones en torno a los sucesos de su quehacer cotidiano. Fueron los y las estudiantes, guiados por sus intereses, quienes se encargaron de confeccionar el listado de preguntas a realizar. En este artículo se analizará y reflexionará sobre lo sucedido en aquellos intercambios, focalizando sobre algunos de los supuestos, tensiones, realidades y lógicas que se conjugan en el campo de la educación en general, y de la Educación Física en particular.
Jóvenes y adolescentes desde el prisma de la desinformación
Authors: López-Martín Álvaro , Córdoba-Cabús Alba , Gómez-Calderón Bernardo
Published: July 2022

En este estudio se explora, a través de un análisis de contenido, de qué manera los jóvenes y los adolescentes son representados en las fake news difundidas en España a través de las redes sociales y aplicaciones de mensajería, así como los rasgos de los bulos que tienen que ver con ellos. Se recabaron todas las noticias falsas referidas a este segmento poblacional registradas en los fact-checkers Newtral y Maldita.es entre el 1 de enero y el 30 de junio de 2021 (n=46). Los resultados permiten concluir que la imagen proyectada de la juventud se basa en la conflictividad y la violencia, a lo que se suma la atribución de otros rasgos como la intolerancia y la elevada atención y dependencia de las redes sociales. Además, se vinculan frecuentemente con temáticas banales o soft. También se demuestra que estos mensajes se difunden preponderantemente en formato texto —aunque es habitual su combinación con otros soportes— y que Twitter, Facebook y WhatsApp son las aplicaciones por las que circula una mayor proporción de bulos. Asimismo, entre las características que se infieren del análisis destacan la mayoritaria presencia de mensajes de invención absoluta y la no atribución de fuentes como práctica usual.
Aproximación cuantitativa a la discriminación contra gays y lesbianas
Authors: Ortega Julian
Published: July 2022

En este artículo se exponen parte de los hallazgos de la investigación doctoral del autor, cuyo objetivo principal consistió en describir y analizar los procesos de discriminación, violencia y desigualdad contra trabajadores y trabajadoras gays y lesbianas en el sector de la salud del Área Metropolitana de Buenos Aires.

La investigación adoptó un enfoque metodológico mixto. Se desarrollan parte de los hallazgos cuantitativos, más específicamente los resultados de la Escala de Discriminación Percibida y Escala de Victimización Percibida, para someterlos a discusión con otras investigaciones previas en las cuales fueron administradas. Se concluye que los hechos de discriminación y desigualdad hacia gays y lesbianas aún persisten en los espacios de trabajo de la salud, mientras que las manifestaciones más explicitas de violencia se habrían desplazado hacia la población travesti/trans.
Malvinas 2012. Fotos de viaje
Authors: La Ferrara Pablo
Published: July 2022

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Errar no sería humano
Authors: Lamanna Gabriel
Published: July 2022

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Comunicación e historia reciente
Authors: Martínez Cintia , Navarrete Marcela , Farías Roxana
Published: July 2022

Esta ponencia constituye un avance de investigación sobre los medios de comunicación de San Luis y las dictaduras militares de 1930 a 1966. Hemos analizado la configuración de las identidades políticas y sus disputas en el discurso mediático local. Respecto a la última dictadura cívico-militar (1976-1983) hemos relevado los medios existentes y recuperado los relatos de ciudadanos/as de San Luis y Villa Mercedes.

Advertimos que el golpe de Estado cambió la vida cotidiana de aquellas personas que se encontraban en áreas claves de la vida social y política. En cambio, quienes estaban en actividades alejadas de la vida pública, percibían a San Luis como un lugar tranquilo, a diferencia de las grandes ciudades. Sin embargo, los testimonios coincidieron en que la última dictadura cívico-militar fue el momento más oscuro de nuestra historia.

Según Mirta Varela (2002), este período tiene dos etapas, una abarca hasta 1980 y la otra desde 1980 hasta 1983. En esta, el gobierno militar enfrentó dificultades que debilitaron su mandato, tales como los cambios de figuras presidenciales, crisis económica y creciente protesta ciudadana. En este contexto, el 2 de abril las Fuerzas Armadas ocuparon las islas Malvinas, iniciando una guerra cuya derrota provocó una profunda crisis en el régimen militar. La movilización social obligó a establecer un cronograma electoral. 

En este trabajo abordamos la segunda etapa, indagando las memorias de los/as ciudadanos/as de San Luis y Villa Mercedes, a través de sus relatos de vivencias y percepciones sobre la Guerra de Malvinas y la vuelta a la democracia. En ese sentido, propone un ejercicio intencional de la memoria orientado por el deseo de la comprensión de lo ocurrido, siguiendo a Pilar Calveiro (2006). Para la autora:

 “La memoria, parte de la experiencia, de lo vivido, de la marca inscripta de manera directa sobre el cuerpo individual o colectivo. Sin embargo, en lugar de quedar fijada en la marca, la cualidad de la memoria reside en que es capaz de trascenderla, de asignarle uno o varios sentidos para hacer así de una experiencia única e intransferible algo transmisible, comunicable, que se puede compartir y pasar” (Calveiro, 2006, p. 377- 378).

Para conocer estos sentidos producidos recurrimos a la técnica de entrevistas semiestructuradas correspondiente a la metodología cualitativa.

Es relevante a los fines de construir memoria desde la comunicación, conocer la relación entre la experiencia de la ciudadanía, los medios y el poder.
BIOLOGY OF Pentalonia nigronervosa COQUEREL ON VARIOUS ZINGIBERACEOUS CROPS
Authors: Efendi Rizki Anwar , SHK Suparman , Hamidson Harman
Published: July 2022

Pentalonia nigronervosa Coquerel (Hemiptera; Aphididae) is the main vector of banana bunchy top disease caused by Banana Bunchy Top Virus (BBTV). The disease is an important and most damaging disease to the crop because infected bananas fail to produce fruits.  As the vector of BBTV, P. nigronervosa is able to lives not only on banana plants but also on others plants, especially those belong to Family Zingiberaceae. The objective of this research was to reveal the biology of P. nigronervosa on banana and other plant species belong to Family Zingiberaceae commonly found around banana cultivation areas. The research was conducted in the Laboratory of Entomology, Department of Plant Protection, Faculty of Agriculture, Sriwijaya University from June to December 2021.  The research was an experimental research arranged in a Completely Randomized Design using plant species as treatment and was replicated 10 times of replications. Young suckers of banana and zingiberaceous plants were used to rear the banana aphid where all biological aspects of the aphid were observed.  P. nigronervosa and the young suckers were placed in a transparent pot covered with transparent plastic with a window made from cheese cloth to facilitate air movement. Room temperature was set to approximately 25oC since the aphid grow and reproduce well under such temperature. The results showed that P. nigronervosa  are able to live and reproduce not only on banana but also on seven species of Zingiberaceous plants with little variation of some morphological and biological parameters.  The significant different was found between biological characteristics of the aphid lived on torch ginger and cardamom which had longer life cycle  but smaller fecundity compared to other experimental hosts used in the research.
PENGARUH MOTIVASI BELAJAR TERHADAP PRESTASI BELAJAR PAI PESERTA DIDIK DI MTS NEGERI TAMBUN TOLITOLI
Authors: Wahyuni Ni'mah
Published: July 2022

This paper discussed the influence learning motivation to the students learning achievement of islamic education. The objectives of this research; (1) to find out partially whether the motivasi of parents and learning  have influence on the students learning achievement of islamic education.(2) to determine partially whether   the learning motivation have influence on students learning achievement of islamic education. This research was a quantitative research design through Ex-Post Facto approach. The samples of the research were 75 respondents. It was selected by applying stratified random sampling techniques. Data collection was gathered by using some instruments;observation, questionnaire and documentation which using multiple regression test. The result of partial test of the students learning motivation to the students learning achievement found tcounted 5,346> ttable 1.99 and level of significance was less than the level of mistrust 5% (0.000 <0.05). It partially meant that the variable of the students learning motivation have a significant positive influence on the students learning achievement of Islamic education. In conclusion, the more increase the students learning motivation and the more increase the students learning achievement of Islamic education. The result of this research is expected to be useful effect and give positive contribution for education especially in islamic course.
renewal of rules in saudi arabia : revealing the points of view of religion and feminism
Authors: Utami Rai Ayu , Salsabila Salsabila , Nurwati R. Nunung
Published: July 2022

Tulisan ini dibuat untuk membahas mengenai reformasi peraturan di negara Saudi Arabia baru-baru ini. Pembahasan ini dilandaskan ketertarikan terhadap negara Saudi Arabia yang selama ini dikenal sebagai negara dengan aturan-aturannya yang konservatif, dan kini mereka mencoba untuk mengubah citra tersebut dengan dikeluarkannya dekrit oleh Putera Mahkota Muhammad bin Salman yang tentu saja menjadi pro-kontra tersendiri di negara tersebut. Lalu tulisan ini akan sedikit membahas mengenai feminisme. Pembahasan berikutnya ialah mengenai bagaimana gerakan feminis di Saudi Arabia dalam memperjuangkan hak-hak perempuan di negara tersebut, lalu pembahasan selanjutnya akan menekankan bahwa Islam yang selama ini dianggap sebagai penyebab utama keterkekangan yang dialami oleh kaum perempuan tidak lah seperti yang selama ini dituduhkan. Kemudian, pembahasan berikutnya akan mengaitkan fenomena ini dengan teori perubahan sosial dan teori konflik yang dirasa sangat tepat dalam menggambarkan fenomena ini. Metode penelitian ini menggunakan studi literatur dengan mencari data sekunder. Peneliti menggunakan sumber data melalui jurnal dan artikel yang terkait.
Book review of Norgaard, Kari Marie. 2019. Salmon and acorns feed our people: colonialism, nature and social action
Authors: Dean Jake William
Published: July 2022

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The Role of Norepinephrine in the Regulation of Growth, Adhesion and Invasion of Pseudomonas Aeruginosa in Human Lung Carcinoma Cell Culture
Authors: Kalaycı-Yüksek Fatma , Gümüş Defne , Güler Varol , Anğ-Küçüker Mine
Published: July 2022

Mammalian hormones are shown to affect not only regulation of mammalian homeostasis but also play roles in cross-talk between microorganisms and their hosts. In our study, the roles of norepinephrine (NE) at two different concentrations on growth alterations, adhesion - invasion of Pseudomonas aeruginosa were investigated.

The effects of NE on the growth, adhesion - invasion of P. aeruginosa ATTC 27853 were examined in human lung carcinoma (A549) cell culture. We analysed two concentrations (HNE: 0.04μg/mL and LNE: 0.0017 μg/mL) of NE considering NE’s psychological levels in a healthy individual to imitate in vivo conditions of the host. Bacterial counts of growth and adhesion-invasion were examined by the colony counting method. Growth of bacterium was significantly reduced in the presence of NE at 90’ incubation (p: 0.0004 for high concentration and p: 0.0003 for low concentration); on the other hand, at 180’ minutes incubation, only low concentration reduced the growth (p˂0.0001). While adhesion was increased in the presence of low NE concentration (p: 0.013), there was no alteration in invasion of P. aeruginosa in the presence of NE (p˃0.05). Our results suggested that NE has different effects on the growth and adhesion of P. aeruginosa and these effects depend on concentration and incubation period.
Chemical Constituents of the Essential Oil from Salvia Verbenaca ssp. Clandestina from Algerian Pre-Sahara
Authors: Smaili Tahar , Belkassam Abdelouahab , Dehimi Khadidja , Hadji Maroua , Flamini Guido
Published: July 2022

The essential oil obtained by hydrodistillation from the aerial parts of Salvia verbenaca (L.) Briq. ssp. clandestina (L.) Pugsl. (Lamiaceae) growing wild in Bou Saâda, pre-Saharan region of Algeria, was analyzed by GC-MS. Sixty-four compounds were detected, representing 95.6% of the whole oil, among them forty five compounds are identified in this sample for the first time. The essential oil of S. verbenaca ssp. clandestena showed the predominance of sesquiterpenes (56.4%) followed by monoterpene derivatives (35.5%). The main constituents were β-pinene (10.2%), spathulenol (8.7%), caryophylene oxide (6.1%), α-pinene (5.2%), germacrene D (5%) and α-gurjunene (4.9%). Chemical composition of the essential oil from our sample may be categorized as sesquiterpene and monoterpene chemotype among the four chemotypes identified for Salvia species.
Potential Role of LYN, CCL2, ITGB3 and IL6 Genes in the Immune Response of Porcine Buccal Mucosa Cells
Authors: Borowiec Blanka , Bryl Rut , Stefańska Katarzyna , Dyszkiewicz-Konwińska Marta
Published: July 2022

The genes considered in this study, namely, LYN, CCL2, ITGB3 and IL6 can be related to immune response in porcine buccal mucosa cells primary cultured in vitro. These genes are also responsible for, inter alia, cell migration, differentiation, proliferation and apoptosis, intracellular signal transduction, extracellular matrix binding and wound healing. A total of 20 pubertal crossbred Landrace gilts bred on commercial farms were used to obtain buccal mucosa cell cultures, which were harvested on the 7th, 15th and 30th day after initiation of the culture. Expression levels of LYN, CCL2, ITGB3 and IL6 were evaluated employing Real-Time Quantitative Polymerase Chain Reaction. All studied genes showed expression. The expression of CCL2 on day 15 was the highest of all factors measured. The greatest difference between the measurements occurred in gene IL6, between 7th and 15th day, while the least difference between the measurements occurred in gene LYN, between 7th and 15th day. Moreover, on the 7th day, LYN presented the lowest expression among all studied genes. Although in vitro conditions are much more controlled than in vivo conditions, all the factors that may positively or negatively affect cultured cells still cannot be fully predicted. Nevertheless, LYN, CCL2, ITGB3 and IL6 are a valuable starting point for studying further immunological processes in oral mucosal epithelial cells. Given their high regenerative potential, research into them is a highly valuable source of information for future wound healing therapies, where immunological processes should be carefully considered.
Difficulties in Treatment of Iridocorneal Endothelial Syndrome - Case Report
Authors: Krasińska Aleksandra , Mamczur Joanna , Pajdowska Manuela , Brązert Agata
Published: July 2022

The iridocorneal endothelial syndrome manifests in three clinical types: Chandler syndrome, progressive iris atrophy, and Cogan-Reese syndrome. It is caused by the presence of abnormal corneal endothelium on the iris stroma and anterior chamber angle leading to usually unilateral, progressive iris atrophy, glaucoma, and/or corneal edema. The etiology is yet unclear. It affects mostly young adults, mostly females. Management of iridocorneal endothelial syndrome is complex: conservative and surgical, depending on the stage of the disease and intensity of present symptoms. A 30-year-old female with a medical history of the iridocorneal endothelial syndrome was reported to the Ophthalmology Department for consultation. Slit-lamp examination revealed iris atrophy and superior-nasal corectopia in the left eye. On gonioscopy, the angle was wide open in the right eye, but there were iridocorneal adhesions and incomplete angle-closure in the left eye. The patient was provided with maximum local therapy consisting of three anti-glaucoma medications. On later check-ups, the patient presented corneal edema and increased intraocular pressure. She was qualified to ExPress mini shunt trabeculectomy with mitomycin C. Two years later, a patient came to the clinic because of increased values of intraocular pressure (up to 59 mmHg), slit-lamp examination showed that the ExPress implant was congested with fragments of the corneal endothelial cells. Thanks to YAG iridotomy the implant was recanalized.
Ocular Manifestations of Pediatric Inflammatory Multisystem Syndrome
Authors: Mamczur Joanna , Pajdowska Manuela , Krasińska Aleksandra , Brązert Agata
Published: July 2022

This article aims to present up-to-date information on ocular symptoms of pediatric multi-system inflammatory syndrome. The reviewers obtained the results based on a search of an electronic database. The pediatric multi-system inflammatory syndrome appears a few weeks after COVID-19 in children. The exact etiology remains unclear. It is diagnosed based on clinical and laboratory criteria. The most prevalent manifestation of the syndrome is non-purulent conjunctivitis (observed in around 50% of cases). The other ocular findings in the pediatric multi-system inflammatory syndrome can be; eyelid swelling, bilateral uveitis or vitreous hyperreflective dots in the posterior vitreous. The treatment of the ophthalmic symptoms is systemic and topical, targeting the enhanced inflammatory response of the organism and the presence of the given ocular findings.
Heavy Eye Syndrome – Case Report
Authors: Mamczur Joanna , Krasińska Aleksandra , Pawlak Marta
Published: July 2022

This paper aims to report clinical features, differential diagnosis and successful surgical outcome of a patient with myopic strabismus fixus, also known as Heavy Eye syndrome (HES). We present a case of a 47-year-old man who presented to the Ophthalmology Department with diplopia and poor vision. In the past, he had been diagnosed with Graves’ disease, high myopia, and secondary open-angle glaucoma. He had undergone orbital decompression and cataract surgery of both eyes. On examination, the patient had esotropia and hypotropia with limited abduction and elevation. The patient was ultimately diagnosed with HES. Yokoyama’s surgery combined with a medial rectus muscle recession in the right eye, were performed. The procedure reduced esotropia, hypotropia and improved ductions.
Burnout of front-line city administrative law-enforcing personnel in new urban development areas: An empirical research in China
Authors: Wang Cong , Hong Chenliang , Zhang Cheng , Gao Lei
Published: July 2022

The city administrative law-enforcing personnel (shorted to ‘chengguan’ in China) burnout is serious. How to timely detect, accurately measure and alleviate the burnout is an important issue for the new urban development areas in China. To construct the job demands-resources (JD-R) model, surveys in new urban areas of China were carried out. Results showed that burnout of chengguan was significantly different in terms of demographic characteristics. Job burnout of chengguan can be predicted by job demands and job resources. These findings can provide implications and guidance for the government sectors to reduce the intangible loss of human resources and to improve their health.