Stance-taking in Spanish-speaking Preschoolers' Argumentative Interaction

The aim of this study is to determine what linguistic resources are used for stance-taking in confrontational interactions. For this purpose, we analyze 70 argumentative sequences in spontaneous peer conversations during play situations of 4 dyads (2 mid and 2 low socio-economic status backgrounds) of 4 to 7-year-old Argentinian children. Stance-taking relies on the use of evaluative language, understood as the markers of speaker's attitude (reference to internal states such as attribute, cognition, emotion, intention, and reported speech, [Shiro, 2003]); and the use of evidential markers, understood as speaker's reference to the status of the information in the utterance (causality, concession, capacity, deontic and epistemic modality, and inference, [Shiro, 2007]), including markers of politeness which serve to mitigate (or intensify) the confrontation (Watts, 2003). Our findings describe the evaluative resources used for stance-taking strategies produced by children at this early age in confrontational interactions with their peers.Fil: Shiro, Martha. Universidad Central de Venezuela; VenezuelaFil: Migdalek, Maia Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro Interdisciplinario de Investigaciones en Psicología Matemática y Experimental Dr. Horacio J. A. Rimoldi; ArgentinaFil: Rosemberg, Celia Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Centro Interdisciplinario de Investigaciones en Psicología Matemática y Experimental Dr. Horacio J. A. Rimoldi; Argentin

Seizures induced by pentylenetetrazole in the adult zebrafish : a detailed behavioral characterization

Pentylenetetrazole (PTZ) is a common convulsant agent used in animal models to investigate the mechanisms of seizures. Although adult zebrafish have been recently used to study epileptic seizures, a thorough characterization of the PTZinduced seizures in this animal model is missing. The goal of this study was to perform a detailed temporal behavior profile characterization of PTZ-induced seizure in adult zebrafish. The behavioral profile during 20 min of PTZ immersion (5, 7.5, 10, and 15 mM) was characterized by stages defined as scores: (0) short swim, (1) increased swimming activity and high frequency of opercular movement, (2) erratic movements, (3) circular movements, (4) clonic seizure-like behavior, (5) fall to the bottom of the tank and tonic seizure-like behavior, (6) death. Animals exposed to distinct PTZ concentrations presented different seizure profiles, intensities and latencies to reach all scores. Only animals immersed into 15 mM PTZ showed an increased time to return to the normal behavior (score 0), after exposure. Total mortality rate at 10 and 15 mM were 33% and 50%, respectively. Considering all behavioral parameters, 5, 7.5, 10, and 15 mM PTZ, induced seizures with low, intermediate, and high severity, respectively. Pretreatment with diazepam (DZP) significantly attenuated seizure severity. Finally, the brain PTZ levels in adult zebrafish immersed into the chemoconvulsant solution at 5 and 10 mM were comparable to those described for the rodent model, with a peak after a 20-min of exposure. The PTZ brain levels observed after 2.5-min PTZ exposure and after 60-min removal from exposure were similar. Altogether, our results showed a detailed temporal behavioral characterization of a PTZ epileptic seizure model in adult zebrafish. These behavioral analyses and the simple method for PTZ quantification could be considered as important tools for future investigations and translational research

Stance-taking in Spanish-speaking Preschoolers’ Argumentative Interaction

The aim of this study is to determine what linguistic resources are used for stance-taking in confrontational interactions. For this purpose, we analyze 70 argumentative sequences in spontaneous peer conversations during play situations of 4 dyads (2 mid and 2 low socio-economic status backgrounds) of 4 to 7-year-old Argentinian children. Stance-taking relies on the use of evaluative language, understood as the markers of speaker’s attitude (reference to internal states such as attribute, cognition, emotion, intention, and reported speech, [Shiro, 2003]); and the use of evidential markers, understood as speaker’s reference to the status of the information in the utterance (causality, concession, capacity, deontic and epistemic modality, and inference, [Shiro, 2007]), including markers of politeness which serve to mitigate (or intensify) the confrontation (Watts, 2003). Our findings describe the evaluative resources used for stance-taking strategies produced by children at this early age in confrontational interactions with their peers

WEB APPLICATION TO MANAGE DOCUMENTS USING THE GOOGLE WEB TOOLKIT AND APP ENGINE TECHNOLOGIES

The application of new information technologies such as Google Web Toolkit and App Engine are making a difference in the academic management of Higher Education Institutions (IES), who seek to streamline their processes as well as reduce infrastructure costs. However, they encounter the problems with regard to acquisition costs, the infrastructure necessary for their use, as well as the maintenance of the software; It is for this reason that the present research aims to describe the application of these new technologies in HEIs, as well as to identify their advantages and disadvantages and the key success factors in their implementation. As a software development methodology, SCRUM was used as well as PMBOK as a project management tool. The main results were related to the application of these technologies in the development of customized software for teachers, students and administrators, as well as the weaknesses and strengths of using them in the cloud. On the other hand, it was also possible to describe the paradigm shift that data warehouses are generating with respect to today's relational databases

Ultrasound-guided hydrostatic reduction of intestinal intussusception: description of three cases

With the objective of reporting the technique of ultrasound-guided hydrostatic reduction of intestinal intussusception, three cases with confirmed diagnosis of the disease submitted to reduction with this technique are described. All cases had successful reductions with no complications. One patient experienced a recurrence of the invagination eight days after treatment, which was surgically corrected. The technique of hydrostatic reversal of intestinal intussusception guided by ultrasound may be used in place of the conventional barium enema, since it is a minimally invasive and safe method, with high rates of success and few complications

Morichales, cananguchales y otros palmares inundables de Suramérica. Parte II: Colombia, Venezuela, Brasil, Perú, Bolivia, Paraguay, Uruguay y Argentina

El libro está dividido en cuatro partes. En la primera sección se incluye un análisis muy completo sobre el estado del conocimiento, uso y conservación de Mauritia flexuosa en Suramérica. En la segunda parte se consideran varios casos de estudio (11) sobre comunidades de plantas asociadas, demografía, polinizadores, aves y mamíferos relacionados, así como temas de manejo y ecoturismo en palmares de Mauritia flexuosa. La tercera sección incluye aportes de varios países sobre otros palmares, principalmente de Astrocaryum jauari, Butia odorata, B. paraguayensis, Copernicia alba, C. tectorum, Euterpe oleracea, Manicaria saccifera, Mauritiella aculeata y Roystonea oleracea. También se aporta información de 25 especies adicionales de palmas, incluyendo los usos, dinámica de poblaciones, biología reproductiva, florística de humedales asociados y conservación, entre otros aspectos. Por último, en la cuarta parte se dan las conclusiones y recomendaciones para la conservación de los palmares inundables en Suramérica.Bogotá, D. C