Formando las contribuciones del aprendiente en el aula de idioma extranjero: Una perspectiva desde el análisis de conversación

Indexación: Scopus.The present study sought to demonstrate the importance that the shaping of learner contributions has in the provision of opportunities for participation and learning in the EFL classroom. A particular set of interactional features that can shape learners' utterances were examined: scaffolding, requests for clarification and confirmation checks. These features have been found to promote language participation and learning from a classroom discourse perspective (Walsh, 2002; Walsh and Li, 2013; Can Daskin, 2014). The study was also informed by the sociocultural concept of learning as a social affair that is achieved through participation (Lantolf, 2000; Donate, 2000; Mondada & Pekarek, 2004). A Conversation Analysis (CA) methodology was used to analyse two extracts collected in EFL classrooms at a language institute in Santiago, Chile. Findings suggested that when teachers shape their learners' contributions by means of scaffolding, clarification requests and confirmation checks in a pedagogical environment that promotes conversation, participation and learning will likely be enhanced. © University of Chile. All rights reserved.El presente estudio intentó demostrar la importancia que la forma de las contribuciones lingüísticas tiene en la provisión de oportunidades de participación y en el aprendizaje en el aula. Se examinó un conjunto particular de características interaccionales que pueden dar forma a los enunciados de los alumnos: andamiaje lingüístico, solicitudes de aclaración y comprobaciones de confirmación. Se ha demostrado que estos rasgos interaccionales promueven la participación y el aprendizaje desde una perspectiva de discurso en el aula (Walsh, 2002; Walsh y Li, 2013; Can Daşkın, 2014). El estudio utilizó el concepto sociocultural del aprendizaje como un logro social conseguido a través de la participación (Lantolf, 2000; Donato, 2000; Mondada & Pekarek, 2004). Se utilizó una metodología de Análisis de Conversación (CA) para examinar dos extractos recogidos en aulas de inglés como lengua extranjera en un instituto de idiomas en Santiago de Chile. El análisis sugirió que si los profesores forman las contribuciones de sus alumnos adecuadamente y en un ambiente pedagógico que busque desarrollar fluidez, la participación y el aprendizaje serán facilitados.https://lenguasmodernas.uchile.cl/index.php/LM/article/view/4922

Bad moon on the rise? Lunar cycles and incidents of crime

Popular cultures in Western societies have long espoused the notion that phases of the moon influence human behavior. In particular, there is a common belief the full moon increases incidents of aberrant, deviant, and criminal behavior. Using police, astronomical, and weather data from a major southwestern American city, this study assessed whether lunar cycles related with rates of reported crime. The findings fail to support popular lore, which has suggested that lunar phase influenced the volume of crime reported to the police. Future research directions examining qualitative rather than quantitative aspects of this problem may yield further inform the understanding of whether lunar cycles appreciably influence demands for policing services

A Tale of Three Cities: Crime and Displacement after Hurricane Katrina

When Hurricane Katrina struck New Orleans in August 2005, it greatly disrupted both the physical and social structures of that community. One consequence of the hurricane was the displacement of large numbers of New Orleans residents to other cities, including Houston, San Antonio, and Phoenix. There has been media speculation that such a grand-scale population displacement led to increased crime in communities that were recipient of large numbers of displaced New Orleans residents. This study was a case study of three cities with somewhat different experiences with Katrina\u27s diaspora. Time series analysis was used to examine the pre- and post-Katrina trends in six Part I offenses (murder, robbery, aggravated assault, rape, burglary, and auto theft) to assess any impact of such large-scale population shifts on crime in host communities. Contrary to much popular speculation, only modest effects were found on crime. Social disorganization theory was used to frame both the analysis and the interpretation of these result

Embarazo en la adolescencia: cómo ocurre en la sociedad actual

ResumenEn México, el 20% de los nacimientos anuales se presenta en madres menores de 20 años. Su importancia radica en el hecho de que el impacto de los embarazos en adolescentes comienza con los riesgos para la salud de la madre y su hijo. Estos riesgos son mayores a medida que la edad de la gestante es menor y en especial cuando, debido a las condiciones sociales y económicas, el cuidado de la salud es inferior a lo ideal, lo cual es determinante en el desarrollo psicosocial materno posterior. Se ha señalado que los jóvenes con baja escolaridad, con menores expectativas académicas y laborales, y con menor autoestima y asertividad tienden a iniciar a más temprana edad su vida sexual activa, a utilizar menos los anticonceptivos y, en el caso de las jóvenes, a quedarse embarazadas, con el riesgo de llegar al aborto por la falta de condiciones y conocimientos que faciliten una decisión mejor. Por ello es imprescindible tener en cuenta el contexto cultural y las características especiales de la familia para entender de forma preventiva la situación de la adolescente con riesgo de embarazo.AbstractIn Mexico, 20% of annual births occur in mothers younger than 20 years old. The importance of this is that the impact of pregnancies in adolescents begins with the risks for the mothers’ health and their children. The younger the age of the woman, the bigger the risk, especially when the social and economic conditions result in healthcare below the ideal, which is decisive in later maternal psychosocial development. It has been pointed out that youngsters with low-level education, with lower academic and work expectations and with lower self-esteem and assertiveness tend to begin their active sexual life at an earlier age, to use contraceptives less and, in the case of young women, to get pregnant. These young pregnant women are at risk of aborting because of the lack of conditions and knowledge that might facilitate a better decision. It is consequently indispensable to take the social context and special family characteristics into account to understand preventatively the situation of an adolescent with pregnancy risk

Exploring teachers’ and learners’ overlapped turns in the language classroom: Implications for classroom interactional competence

Indexación: Scopus.The language choices that teachers make in the language classroom have been found to influence the opportunities for learning given to learners (Seedhouse, 2004; Walsh, 2012; Waring, 2009, 2011). The present study expands on research addressing learner-initiated contributions (Garton, 2012; Jacknick, 2011; Waring, Reddington, & Tadic, 2016; Yataganbaba & Yıldırım, 2016) by demonstrating that opportunities for participation and learning can be promoted when teachers allow learners to expand and finish their overlapped turns. Audio recordings of lessons portraying language classroom interaction from three teachers in an adult foreign language classroom (EFL) setting were analyzed and discussed through conversation analysis (CA) methodology. Findings suggest that when teachers are able to navigate overlapping talk in such a way that provides interactional space for learners to complete their contributions, they demonstrate classroom interactional competence (Sert, 2015; Walsh, 2006). The present study contributes to the literature by addressing interactional features that increase interactional space, and an approach to teacher and learner talk that highlights CA’s methodological advantages in capturing the interactional nuances of classroom discourse. © 2019, Adam Mickiewicz University Press. All rights reserved.https://pressto.amu.edu.pl/index.php/ssllt/article/view/2061

Psoriatic Animal Models Developed for the Study of the Disease

Psoriasis is a skin disease mainly developed in humans, although it is also seen in monkeys and dogs. Animal models with psoriasis-like lesions have been a key factor for its understanding. Xenotransplants of human psoriatic skin in immunodeficient mice were the first approach for the association of immunologic problems with the development of psoriasis and have been also useful for the evaluation on new therapeutic agents. Imiquimod-induced murine psoriasis is nowadays one of the most used animal models to study this disease, perhaps because healthy wild-type mice are used, which means that it is an affordable model, easy to generate, and, more importantly, resembles the inflammatory, angiogenic and hyperproliferative characteristics of human psoriasis. Several transgenic (over-expressing VEGF, Tie2, TGFβ, STAT3, IL-36, PPARβ/γ) and knockout (lacking IκBα, JunB, IFNR-2, IL-36RA, CD18, IKK2) mice have been useful for the association of specific molecules for the development of psoriasis. Other approach has been the use of both transgenic/knockout mice and imiquimod treatment, where the importance of βTrCP, IκBζ, IL-35 and Tnip1 for the development of psoriasis was found. In this chapter, some of these animal models are discussed

Delitos contra el sentimiento religioso y el respeto a los difuntos

Delitos contra el sentimiento religioso y el respeto a los difunto

LAR Receptor Tyrosine Phosphatase Family in Healthy and Diseased Brain

Protein phosphatases are major regulators of signal transduction and they are involved in key cellular mechanisms such as proliferation, differentiation, and cell survival. Here we focus on one class of protein phosphatases, the type IIA Receptor-type Protein Tyrosine Phosphatases (RPTPs), or LAR-RPTP subfamily. In the last decade, LAR-RPTPs have been demonstrated to have great importance in neurobiology, from neurodevelopment to brain disorders. In vertebrates, the LAR-RPTP subfamily is composed of three members: PTPRF (LAR), PTPRD (PTPδ) and PTPRS (PTPσ), and all participate in several brain functions. In this review we describe the structure and proteolytic processing of the LAR-RPTP subfamily, their alternative splicing and enzymatic regulation. Also, we review the role of the LAR-RPTP subfamily in neural function such as dendrite and axon growth and guidance, synapse formation and differentiation, their participation in synaptic activity, and in brain development, discussing controversial findings and commenting on the most recent studies in the field. Finally, we discuss the clinical outcomes of LAR-RPTP mutations, which are associated with several brain disorders

Serotonergic Modulation of Neurovascular Transmission:A Focus on Prejunctional 5-HT Receptors/Mechanisms

5-Hydroxytryptamine (5-HT), or serotonin, plays a crucial role as a neuromodulator and/or neurotransmitter of several nervous system functions. Its actions are complex, and depend on multiple factors, including the type of effector or receptor activated. Briefly, 5-HT can activate: (i) metabotropic (G-protein-coupled) receptors to promote inhibition (5-HT1, 5-HT5) or activation (5-HT4, 5-HT6, 5-HT7) of adenylate cyclase, as well as activation (5-HT2) of phospholipase C; and (ii) ionotropic receptor (5-HT3), a ligand-gated Na+/K+ channel. Regarding blood pressure regulation (and beyond the intricacy of central 5-HT effects), this monoamine also exerts direct postjunctional (on vascular smooth muscle and endothelium) or indirect prejunctional (on autonomic and sensory perivascular nerves) effects. At the prejunctional level, 5-HT can facilitate or preclude the release of autonomic (e.g., noradrenaline and acetylcholine) or sensory (e.g., calcitonin gene-related peptide) neurotransmitters facilitating hypertensive or hypotensive effects. Hence, we cannot formulate a specific impact of 5-HT on blood pressure level, since an increase or decrease in neurotransmitter release would be favoured, depending on the type of prejunctional receptor involved. This review summarizes and discusses the current knowledge on the prejunctional mechanisms involved in blood pressure regulation by 5-HT and its impact on some vascular-related diseases.</p