Los tutores en la educación a distancia. Un aporte teórico

El presente trabajo aborda un enfoque sobre la importancia de las tutorías en la educación a distancia consistente en revisar algunas de las conceptualizaciones sobre esta función tutorial. La educación a distancia irrumpe como una alternativa de aprendizaje, es por eso por lo que el docente-tutor debe mostrar convicción en los beneficios de la educación a distancia -sustentados en el conocimiento teórico de los fundamentos de la modalidad- que aporte confianza a sus alumnos. Si bien todos los medios son importantes y necesarios en la educación a distancia para favorecer la interactividad, habrá que estar alerta respecto de la práctica efectiva de su apropiación según las situaciones y los perfiles de los actores, puesto que no garantizan por sí mismos mejores procesos de enseñanza, aprendizaje y orientación diferidos. Por lo tanto, no se trata de recurrir a los medios porque están allí, sino porque son potencialmente educativos y contribuyen a la eficacia docente a distancia. Por ello, la combinación de todos será la estrategia a adoptar. A partir de esta presentación, se intenta un análisis teórico que permita redescubrir la importancia de la función tutorial en la educación a distancia

WebQuests, Wikis y Blogs un trío que se las trae!

Articulo que explica el uso que se les puede dar a las WebQuests, los blogs y las wikis en la enseñanza. Explica lo qué son y propone dos experiencias en las que se usan WebQuest y blogs en una clase de informática y WebQuest y wikis en una clase de inglés. Ambas clases se dan en secundaria

Arbuscular Mycorrhizas Alleviate Plant Stress : Analysis of Studies from South America

Fil: Pagano, Marcela Claudia. Department of Physics. Federal University of Minas Gerais; Belo Horizonte; Minas Gerais; BrazilFil: Cabello, Marta Noemí. División Instituto Spegazzini. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin

Apoyo "Just in time" mediado por tecnología a los docentes de Educación Básica

El dispositivo "Just in time" mediado por tecnologías se caracteriza porque se origina a partir del reconocimiento, de la toma de conciencia de la existencia de una necesidad y que deviene en demanda. Esta intervención emergente proporciona un espacio para la reflexión individual y colectiva, en la cual el docente efectúa una metareflexión enfocada a su práctica. Dado que esta interpelación refiere a las prácticas docentes, resulta imperioso contextualizarlo en la institución escolar es por ello que el formador acompaña virtualmente al docente en su ámbito de trabajo. El objetivo central de esta intervención es problematizar aspectos que han sido naturalizados en el terreno profesional y partiendo de ello avanzar en el desarrollo de un encuadre de trabajo superador, diseñado y acordado entre los diversos actores que forman parte del ámbito de intervención. De esta manera los docentes junto al formador articulan el trabajo orientándolo hacia la mejora de la situación inicial, que originó la demanda

A Vacuum manipulation device and a method for manipulating a components by means of a vacuum

A vacuum manipulation device (1 ) comprising a tube (2) in communication with a vacuum generating system for gripping a component by suction at a gripper nozzle (3) of the tube itself and a mechanical release system (8) inserted at least partially inside the tube (2). The mechanical release system (8) is movable between a release position, in which a release portion thereof projects externally from the gripper nozzle (3), and a gripping position, in which the release portion (10a) returns into the tube (2). The mechanical release system (8) comprises a transverse extension (9) made up of a perforated disk and a needle (10) solidly joined to the perforated disk and having a diameter that is smaller than the internal diameter of the tube (2). The needle (10) is inserted at least partially inside the tube (2) and comprises the release portion

Italian children's accounts of the lockdown. Insights and perspectives

COVID-19 lockdown-imposed restrictions emerged as a risk to children's well-being. However, the extant literature often ignored children's experiences, emotions, struggles, hopes, and expectations. Based on a large sample of Italian students (N = 906; mean age = 9.4 years, 48.8% female), we drew data from a post-lockdown school re-entry program where students completed narrative activities in 2020. These narratives underwent quantitative content analysis according to gender and school level. Overall, children reported mixed feelings about the lockdown; they felt safe at home but also experienced fear and missed their friends, school, and freedom. Screen-time, technology and friendships helped, but children struggled to make sense of the events. Our findings show how children attempted to make sense of the lockdown experience and may provide key information for the development of community coping programs to help children facing crises in the future

Occurrence of Mycorrhizas in highland fields

Fil: Pagano, Marcela Claudia. Federal University of Ceará; BrazilFil: Cabello, Marta Noemí. División Instituto Spegazzini. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin

Augmented reality and portable devices to increase safety in container terminals: the testing of A4S project in the port of Genoa

Port container terminals are intrinsically complex environments and the human factor is often the main cause of accidents. Industry 4.0 technologies enable to dispose of enormous quantity of data, process them with advanced algorithms also allowing predictivity, and provide virtual/augmented reality tools to interact with human operators. Promising solutions are spreading that use the loT paradigm to acquire data and apply Big Data techniques to manage them. The objective of “Awareness for Safey-A4S” project, is to test a complete solution that allows field operators to be equipped with intelligent wearable devices, allowing "conscious" interaction in complex environments. This solution provides for the visualization of environment information in real time through Augmented Reality devices. These devices themselves represent a "sensor" providing information to the general system. Such information, integrated with environmental data and gathered through a specific I-IoT cloud platform and customized field devices, can improve safety and effectiveness of operations. Further support for operator safety is provided by a route tracking system aimed at directing operators, walking in the terminal, on the shortest and safest path. Such system can consider in real time the risks due to the movements of terminal equipment. The current paper presents this solution and the first field tests at PSA SECH container terminal in the Italian port of Genoa port to demonstrate the effectiveness of the proposed solution in increasing safety in complex and dangerous environments

Cyclin F-Mediated Degradation of Ribonucleotide Reductase M2 Controls Genome Integrity and DNA Repair

F-box proteins are the substrate binding subunits of SCF (Skp1-Cul1-F-box protein) ubiquitin ligase complexes. Using affinity purifications and mass spectrometry, we identified RRM2 (the ribonucleotide reductase family member 2) as an interactor of the F-box protein cyclin F. Ribonucleotide reductase (RNR) catalyzes the conversion of ribonucleotides to deoxyribonucleotides (dNTPs), which are necessary for both replicative and repair DNA synthesis. We found that, during G2, following CDK-mediated phosphorylation of Thr33, RRM2 is degraded via SCFcyclin F to maintain balanced dNTP pools and genome stability. After DNA damage, cyclin F is downregulated in an ATR-dependent manner to allow accumulation of RRM2. Defective elimination of cyclin F delays DNA repair and sensitizes cells to DNA damage, a phenotype that is reverted by expressing a nondegradable RRM2 mutant. In summary, we have identified a biochemical pathway that controls the abundance of dNTPs and ensures efficient DNA repair in response to genotoxic stress