808 resultados para ESL learners


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This is Ireland’s first White Paper on Adult Education and marks the adoption of lifelong learning as the governing principle of educational policy. The Paper reflects on the role of adult education in society, builds on the consultation process following publication of the Green Paper, and sets out the Government’s policies and priorities for the future development of the sector. It does not aim to provide a policy blueprint for the training sector given that this work is being advanced through the National Employment Action Plans and previous publications, and the work of the Task Force on Lifelong Learning recently established by the Department of Enterprise, Trade and Employment. Rather, it seeks to ensure that there is a fit and complementarity between education and training provision, so as to ensure that learners can move progressively and incrementally within an over-arching co-ordinated and learner-centred framework.

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Technology (i.e. tools, methods of cultivation and domestication, systems of construction and appropriation, machines) has increased the vital rates of humans, and is one of the defining features of the transition from Malthusian ecological stagnation to a potentially perpetual rising population growth. Maladaptations, on the other hand, encompass behaviours, customs and practices that decrease the vital rates of individuals. Technology and maladaptations are part of the total stock of culture carried by the individuals in a population. Here, we develop a quantitative model for the coevolution of cumulative adaptive technology and maladaptive culture in a 'producer-scrounger' game, which can also usefully be interpreted as an 'individual-social' learner interaction. Producers (individual learners) are assumed to invent new adaptations and maladaptations by trial-and-error learning, insight or deduction, and they pay the cost of innovation. Scroungers (social learners) are assumed to copy or imitate (cultural transmission) both the adaptations and maladaptations generated by producers. We show that the coevolutionary dynamics of producers and scroungers in the presence of cultural transmission can have a variety of effects on population carrying capacity. From stable polymorphism, where scroungers bring an advantage to the population (increase in carrying capacity), to periodic cycling, where scroungers decrease carrying capacity, we find that selection-driven cultural innovation and transmission may send a population on the path of indefinite growth or to extinction.

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Selectins play a key role regulating leukocyte migration into tissues by mediating leukocyte tethering (capture) and rolling on inflamed endothelium and/or on adherent leukocytes or platelets. During leukocyte rolling, endothelial E- or P-selectin bind to glycoprotein ligands carrying sialyl Lewis χ (sLex) determinant. P-selectin glycoprotein ligand-1 (PSGL-1) is a common ligand for L-, P- and E-selectin, which sequentially cooperates with CD44 and E- selectin ligand-1 (ESL-1) to roll on E-selectin. During rolling on endothelial selectins, PSGL-1 and CD44 signal through Src family kinases and Syk, leading to αι_β2 integrin partial activation and slow rolling on intercellular adhesion molecule-1 (ICAM-1). Leukocyte exposure to chemokines then leads to firm adhesion. Little information is available on ligands that mediate malignant leukocyte rolling on E- selectin. We defined these ligands on U937 monoblasts by immunoadsorbtion and immunoblotting using mAb raised against CD43, CD44, PSGL-1, sLex/CLA determinants and E-selectin/IgM chimera. Immunoblotting and blot rolling assays demonstrated that PSGL-1, CD43, CD44 and a -125 kDa sLex/CLA positive ligand contribute to support E-seiectin- dependent rolling. This -125 kDa ligand is endoglycan, a member of the CD34 family of sialomucins. Endoglycan was frequently detected by flow cytometry on primary leukemia, lymphoma and multiple myeloma ceils (in -50% of cases). Endoglycan, immunopurified from U937 cells, as well as endoglycan/IgG chimera efficiently supported E-selectin dependent rolling. Membrane fractionation on sucrose gradient demonstrated that endoglycan is expressed in lipid rafts. We tested the hypothesis that it signals, like PSGL-1 and CD44, through Src kinases and the MAPK pathway. Indeed, endoglycan engagement induced Syk and ERK phosphorylation in a iipid raft-dependent manner. Syk activation was dependent on Src kinase activity. Downstream of Syk, endoglycan activated PI3K and Akt as well as Bruton's tyrosine kinase and p38 MAPK. Thus, endoglycan is a ligand for endothelial selectins which may contribute to regulate leukemia, lymphoma and multiple myeloma cell trafficking and interactions with bone marrow microenvironment. - Les sélectines contrôlent la migration tissulaire des leucocytes en assurant leur capture et leur roulement sur l'endothélium vasculaire enflammé et/ou sur des plaquettes ou des leucocytes adhérant à la paroi vasculaire. Lors du roulement leucocytaire, les sélectines endothéliales (E- et P-sélectine) se lient à des ligands porteurs du saccharide sialyl Lewis χ (sLex). PSGL-1 est un ligand commun des sélectines qui coopère avec CD44 et ESL-1 pour permettre la capture et le roulement des neutrophiles. Lorsque PSGL-1 et CD44 se lient aux sélectines endothéliales, elles induisent la phosphorylation des kinases Src et de Syk conduisant à l'activation partielle de l'intégrine aLp2 et au ralentissement des leucocytes sur les sélectines et ICAM-1. Les chimiokines induisent ensuite l'adhésion ferme des leucocytes. Les ligands des sélectines qui assurent le roulement, sur la E-sélectine, des cellules issues d'hémopathies malignes sont peu connus. Nous avons caractérisé ces ligands en les purifiant avec des anticorps dirigés contre CD43, CD44, PSGL-1, sLex/CLA et en utilisant la chimère E-sélectine/IgM. Des tests d'adhésion ont montré que PSGL-1, CD43, CD44 et une glycoprotéine de ~125 kDa soutiennent les interactions cellulaires dépendant de la E- sélectine. Le ligand de -125 kDa a été identifié comme étant l'endoglycan. Il a été détecté, par cytométrie de flux, sur les cellules leucémiques, les cellules de lymphomes ou de myélome multiple, dans ~50% des cas analysés. Sa forme membranaire, immunopurifiée, ou recombinante (endoglycan/lgG) soutient les interactions cellulaires dépendant de la E- sélectine. Nous avons montré qu'il réside dans les rafts lipidiques membranaires puis avons testé l'hypothèse que l'endoglycan, comme PSGL-1 et CD44, induit une signalisation via les kinases de type Src et la voie des MAPK. Nous avons pu observer que son engagement induit la phosphorylation de Syk et de ERK pour autant que la structure des rafts soit préservée. En aval de Syk, l'endoglycan active la PI3K, Akt, Btk et la MAPK p38. Ces résultats montrent que l'endoglycan est un ligand des sélectines endothéliales qui pourrait participer au contrôle du trafic et des interactions des cellules leucémiques, de lymphomes ou de myélomes multiples avec leur microenvironnement. - Le sang est un élément clé du fonctionnement de notre corps. La circulation sanguine permet la communication et le transfert de molécules et cellules entre divers organes. Lors d'une inflammation aiguë due à une réaction allergique, une infection ou une blessure, on observe un oedème local accompagné de rougeur, de chaleur et souvent de douleurs. Au sein des tissus enflammés, on observe des globules blancs (leucocytes) et diverses molécules inflammatoires qui attirent les leucocytes dans les tissus lésés (chimiokines). Le sang est composé de globules rouges, de plaquettes et de leucocytes spécialisés dans les défenses immunes. Pour atteindre le site d'inflammation, les leucocytes doivent quitter la circulation sanguine. Ils utilisent pour cela des molécules d'adhésion présentes à leur surface qui se lient à d'autres molécules d'adhésion de la paroi sanguine. Leurs interactions permettent aux leucocytes de rouler à la surface du vaisseau sanguin. Lorsqu'ils roulent au voisinage d'un site d'inflammation, les leucocytes sont exposés à des chimiokines qui induisent leur arrêt et les dirigent dans les tissus enflammés. Ce processus physiologique est aussi impliqué dans des pathologies telles que l'infarctus, l'artériosclérose ou la thrombose. Il peut être détourné à des fins moins louables par des cellules cancéreuses pour permettre leur dissémination (métastatisation). Dans ce travail de thèse, nous avons caractérisé une molécule d'adhésion qui soutient l'adhésion des leucocytes aux sélectines endothéliales: l'endoglycan. Nous avons observé que cette molécule d'adhésion est fréquemment exprimée par les cellules malignes de nombreuses maladies du sang comme les leucémies, les lymphomes et le myélome multiple. Nous avons également pu montrer que l'endoglycan envoie des signaux à l'intérieur des cellules malignes lorsqu'elles se lient aux sélectines endothéliales. Ces signaux pourraient jouer un rôle déterminant dans la régulation des interactions des cellules malignes avec leur microenvironnement. Elles pourraient peut-être aussi favoriser leur survie et leur prolifération.

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The place of technology in the development of coherent educational responses to environmental and socio-economic disruption is here placed under scrutiny. One emerging area of interest is the role of technology in addressing more complex learning futures, and more especially in facilitating individual and social resilience, or the ability to manage and overcome disruption. However, the extent to which higher education practitioners can utilise technology to this end is framed by their approaches to the curriculum, and the socio-cultural practices within which they are located. This paper discusses how open education might enable learners to engage with uncertainty through social action within a form of higher education that is more resilient to economic, environmental and energy-related disruption. It asks whether open higher education can be (re)claimed by users and communities within specific contexts and curricula, in order to engage with an uncertain world.

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OER-based learning has the potential to overcome many shortcomings and problems of traditional education. It is not hampered by IP restrictions; can depend on collaborative, cumulative, iterative refinement of resources; and the digital form provides unprecedented flexibility with respect to configuration and delivery. The OER community is a progressive group of educators and learners with decades of learning research to draw from, who know that we must prepare learners for an evolving and diverse reality. Despite this OER tends to replicate the unsuccessful characteristics of traditional education. To remedy this we may need to remember the importance of imperfection, mistakes, problems, disagreement, and the incomplete for engaged learning, and relinquish our notions of perfection, acknowledging that learners learn differently and we need diverse learners. We must stretch our perceptions of quality and provide mechanisms for engaging the incredible pool of educators globally to fulfill the promise of inclusive education.

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Most educational institutions include nowadays a digital repository as part of their development and positioning strategy. The main goals of a digital repository are preservation and dissemination, which are some how contradictory, especially if the repository follows an open approach, as it is designed, built and managed from an institutional perspective, although it is intended to be used by teachers and learners. This fact may lead to a low level of usage, as final users are not able to integrate the learning object repository into their learning process. In this paper we will discuss how to promote open educational resources by connecting open repositories with open social networks, bridging the gap between resources and final users (teachers and learners).

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The purpose of this paper is to present an approach for students to have non-traditional learning assessed for credit and introduce a tool that facilitates this process. The OCW Backpack system can connect self-learners with KNEXT assessment services to obtain college credit for prior learning. An ex post facto study based on historical data collected over the past two years at Kaplan University (KU) is presented to validate the portfolio assessment process. Cumulative GPA was compared for students who received experiential credit for learning derived from personal or professional experience with a matched sample of students with no experiential learning credits. The study found that students who received experiential credits perform better than the matched sample students on GPA. The findings validate the KU portfolio assessment process. Additionally, the results support the capability of the OCW Backpack to capture the critical information necessary to evaluate non-traditional learning for university credit.

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Aquest estudi pretén investigar els intercanvis verbals mestre/a – aprenent(s) en dos contextos d'instrucció diferents: classes amb un enfocament AICLE (Aprenentatge Integrat de Continguts Curriculars i Llengua Estrangera) on s’aprenen continguts no lingüístics a través de l’anglès, per una banda, i classes 'tradicionals' d'anglès com a llengua estrangera, on l’anglès és alhora objecte d’estudi i vehicle de comunicació, per una altra banda. Més concretament, les preguntes que formula el/la mestre/a, la producció oral dels aprenents i el 'feedback' del/de la mestre/a en els episodis d’atenció a la forma s’han estudiat a la llum de les principals teories provinents del camp de l’Adquisició de Segones Llengües (SLA) per tal de demostrar el seu paper en l’aprenentatge de l’anglès. El corpus de dades prové de l’enregistrament de 7 sessions AICLE i d'11 sessions EFL enregistrades en format àudio i vídeo en dos centres públics d’Educació Primària (EP) de Catalunya. A cadascuna de les escoles, el/la mateix/a mestre/a és l’encarregat/da dels dos tipus d’instrucció amb el mateix grup d’aprenents (10-11 anys d’edat), fet que permet eliminar variables individuals com l'aptitud dels aprenents o l'estil del/de la mestre/a.Els resultats mostren un cert nombre de similituds discursives entre AICLE i EFL donat que ambdós enfocaments tenen lloc en el context-classe amb unes característiques ben definides. Tal com apunta la recerca realitzada en aquest camp, la instrucció AICLE reuneix un seguit de condicions idònies per un major desenvolupament dels nivells de llengua anglesa més enllà de les classes ‘tradicionals’ d’anglès. Malgrat això, aquest estudi sembla indicar que el potencial d'AICLE pel que fa a facilitar una exposició rica a l’anglès i una producció oral significativa no s’explota degudament. En aquest sentit, els resultats d’aquest estudi poden contribuir a la formació dels futurs professors d'AICLE si es busca l’assoliment d’una complementarietat d’ambdós contextos amb l’objectiu últim de millorar els nivells de domini de la llengua anglesa.

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Geography as a school subject is specifically thought for and by the schools. The contents of the school subject, nowadays, do not reflect the concerns and the evolution of the discipline as such. Nevertheless, official curricula set school objectives that address issues affecting the world and people's lives. These issues are coherent with the ones addressed by geography as a social science, that is to say the study of how people and their environment interact and how societies are interconnected through space. On an every day basis, Geography as a school subject is most of the time reduced to accumulating knowledge outside any given context. This knowledge may even be partially untrue or old and the related activities focus on low cognitive tensions. These practices do not contribute to the learners' understanding of the world because it does not allow them to build a geographical competence, which they. will need as future citizens in order to make responsible choices when they are confronted to questions related to how the locations of human and physical features are influenced by each other and how they interact across space. The central part of the text relies on the ideas and the processes discussed in the publications, which constitute the published file; it is divided into two parts. The first part (chapter 4) presents a didactic approach, which gives meaningful insights into Geography as a school subject and shows a brief account of the theoretical background that supports it. This socio-constructivist approach relies on the main following features: a priming stage (élément déclencheur), which presents geographical knowledge as an issue to be explored, discussed or solved; the issue is given to learners;. the planning of the teaching-learning sequence in small units launched by the main issue in the priming stage ; the interconnections of geographical knowledge with integrative concepts ; the synthetic stage or reporting stage where final concepts and knowledge are put together in order to be learned. Such an approach allows learners to re-invest the knowledge they have built themselves. This knowledge is organised by geographical integrative concepts, which represent true thinking operative tools and with which key issues in the geographical thinking are associated. The second part of the text (chapter 5) displays the didactic principles that governed the conception of the new initial training course for the future upper secondary school teachers at the HEP Vaud. The ambition of this course is to prepare future teachers to plan and realize the teaching of geography that provides pupils with the tools to understand better how people and their environment interact and how societies are interconnected through space. One of the tools for the teachers is the conceptual framework, whose most salient interest is to be relevant at every stage of the preparation and planning of the teaching, including the necessary epistemological reflection that should always be present. The synthesis of the text starts with a short account of the first evaluation of the new course. Various reflections on the future concerns and issues, that the didactics and methodology of Geography will be confronted with, constitute the synthesis.

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La relación educativa entraña, inevitablemente, el debate entorno de la verticalidad y del ejercicio del poder. De qué modo nos relacionamos y cómo gestionamos la comunicación entre educadores y educandos, así como entre iguales. Esa tensión se ve amplificada en la medida que incorporamos lógicas evaluativas en nuestro quehacer profesional. La siguiente comunicación describe la experiencia de la metodología de aprendizaje basada en la evaluación entre iguales aplicada a la profesionalización de los y las educadores/as sociales. Tanto a nivel escolar como en el universitario hay numerosas experiencias publicadas en relación a la metodología de evaluación entre iguales. Además, existen numerosos apartados de los “Documentos profesionalizadores” donde se justifica el hecho de que se entrenen algunas habilidades que deberían darse en la práctica profesional (como por ejemplo en la definición, en el código ético, y en el catálogo de funciones y competencias del/la educador/a social). En esta comunicación pretendemos dar a conocer la experiencia de entrenamiento de futuros educadores en aspectos que tienen una relación directa con la evaluación entre educadores/as sociales. Así pues, utilizaremos una justificación académica y metodológica de la actividad, enlazándola con los documentos profesionalizadores con un fin relacionado directamente con el ejercicio de la profesión.

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Report for the scientific sojourn carried out at the School of Computing of the University of Dundee, United Kingdom, from 2010 to 2012. This document is a scientific report of the work done, main results, publications and accomplishment of the objectives of the 2-year post-doctoral research project with reference number BP-A 00239. The project has addressed the topic of older people (60+) and Information and Communication Technologies (ICT), which is a topic of growing social and research interest, from a Human-Computer Interaction perspective. Over a 2-year period (June 2010-June 2012), we have conducted classical ethnography of ICT use in a computer clubhouse in Scotland, addressing interaction barriers and strategies, social sharing practices in Social Network Sites, and ICT learning, and carried out rapid ethnographical studies related to geo-enabled ICT and e-government services towards supporting independent living and active ageing. The main results have provided a much deeper understanding of (i) the everyday use of Computer-Mediated Communication tools, such as video-chats and blogs, and its evolution as older people’s experience with ICT increases over time, (ii) cross-cultural aspects of ICT use in the north and south of Europe, (iii) the relevance of cognition over vision in interacting with geographical information and a wide range of ICT tools, despite common stereotypes (e.g. make things bigger), (iv) the important relationship offline-online to provide older people with socially inclusive and meaningful eservices for independent living and active ageing, (v) how older people carry out social sharing practices in the popular YouTube, (vi) their user experiences and (vii) the challenges they face in ICT learning and the strategies they use to become successful ICT learners over time. The research conducted in this project has been published in 17 papers, 4 in journals – two of which in JCR, 5 in conferences, 4 in workshops and 4 in magazines. Other public output consists of 10 invited talks and seminars.

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Dialogic learning and interactive groups have proved to be a useful methodological approach appliedin educational situations for lifelong adult learners. The principles of this approach stress theimportance of dialogue and equal participation also when designing the training activities. This paperadopts these principles as the basis for a configurable template that can be integrated in runtimesystems. The template is formulated as a meta-UoL which can be interpreted by IMS Learning Designplayers. This template serves as a guide to flexibly select and edit the activities at runtime (on the fly).The meta-UoL has been used successfully by a practitioner so as to create a real-life example, withpositive and encouraging results

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This paper describes a pilot study centred on the technology-enhanced self-development of competences in lifelong learning education carried out in the challenging context of the Association of Participants Àgora. The pilot study shows that the use of the TENCompetence infrastructure, i.e. in this case the Personal Development Planner tool, provides various kinds of benefits for adult participants with low educational profiles and who are traditionally excluded from the use of innovative learning technologies and the knowledge society. The selforganized training supported by the PDP tool aims at allowing the learners to create and control their own learning plans based on their interests and educational background including informal and non-formal experiences. In this sense, the pilot participants had the opportunity to develop and improve their competences in English language (basic and advanced levels) and ICT competence profiles which are mostly related to functional and communicative skills. Besides, the use of the PDP functionalities, such as the self-assessment, the planning and the self-regulating elements allowed the participants to develop reflective skills. Pilot results also provide indications for future developments in the field of technology support for self-organized learners. The paper introduces the context and the pilot scenario, indicates the evaluation methodology applied and discusses the most significant findings derived from the pilot study.

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Existe una falta de interés por parte de los estudiantes en el área de las Tecnologías de la Información y la Comunicación (TIC) que se ve reflejada en el descenso de las matriculaciones en este ámbito. El uso de metodologías de aprendizaje basadas en el Constructivismo combinadas con tecnología software, se ha observado que es una buena solución para afrontar dicha falta de interés. Sin embargo, actualmente no existen aplicaciones software que implementen estas metodologías pedagógicas y que proporcionen a los estudiantes los mecanismos de ayuda necesarios (Scaffolding) para darles soporte durante el aprendizaje de conceptos TIC. Una posible solución a este problema es el uso de juegos educativos, los cuáles implementarán técnicas de Scaffolding que den el soporte necesario al estudiante para alcanzarlos objetivos de aprendizaje fijados. Por tanto, en este proyecto se diseñará e implementará un juego educativo basado en puzles orientado a la Programación que estará basado en un método aprendizaje basado en el Constructivismo en el que el estudiante construye su propio conocimiento. Una vez implementado, será evaluado en un centro escolar por parte deestudiantes de últimos cursos de ESO o Bachillerato.

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This study investigates the development of fluency in 30 advanced L2 learners of English over a period of 15 months. In order to measure fluency, several temporal variables and hesitation phenomena are analyzed and compared. Oral competence is assessed by means of an oral interview carried out by the learners. Data collection takes place at three different times: before (T1) and after (T2) a six-month period of FI (80 hours) in the home university, and after a three-month SA term (T3). The data is analyzed quantitatively. Developmental gains in fluency are measured for the whole period, adopting a view of complementarity between the two learning contexts. From these results, a group of high fluency speakers is identified. Correlations between fluency gains and individual and contextual variables are executed and a more qualitative analysis is performed for high fluency speakers' performance and behavior. Results show an overall development of students' oral fluency during a period of 15 months favored by the combination of a period of FI at home followed by a 3-months SA.