Utilizing Hoover-Dempsey and Sandler's (1995, 2005) theoretical framework on parental involvement, this study examined a cross-sectional sample of 516 parents of children in the first and fourth grade in municipal schools in Chile. The research sought to examine the association between parental motivational beliefs, parental perceptions of invitations for involvement, and parental perceived life context, and parental at-home and at-school involvement when controlling for child, parent, and household characteristics. Results from this study indicate that child invitations for involvement, parental sense of self-efficacy, income, and child's grade level are significantly associated with parental at home and at school involvement. Time and energy was also significantly associated with parental at school involvement. Understanding the importance of parental involvement as a protective factor in children's mental health, the article concludes with reflections on the findings for school-based mental health interventions. Specifically, the conclusions explore how to integrate family involvement initiatives and increase parental involvement, taking into account parental motivations for involvement in an international setting.

<p align="justify">Los nuevos escenarios educativos demandantes de calidad y equidad ubican la vinculación familia-escuela en un sitial clave, pues si se da positivamente, tendrá potencialidades de colaboración mutua, favoreciendo aprendizajes significativos en los estudiantes. Esta vinculación es analizada desde una mirada ecosistémica, en la que se van articulando en los distintos ámbitos ecológicos las dimensiones de la escuela, la familia y los aprendizajes. A partir de este análisis, se relevan los <em>procesos de participación parental </em>como instancia estratégica para mejorar los aprendizajes, mejorar el clima escolar y contribuir a la mejora educativa. Finalmente, se presentan algunas estrategias enfocadas en favorecer diversas instancias de participación y se desarrollan algunas consideraciones al momento de diseñar e implementar la estrategia de participación parental en la escuela.</p>

RESUMENEl artículo trata sobre la refl exión respecto la vinculación familia-escuela en contextos de pobreza, el análisis es orientado por la hipótesis de que esta relación puede ser positiva o negativa según la incidencia que tenga en los niños, en sus aprendizajes y en el entorno educativo. El desarrollo del análisis se da mediante la revisión de la literatura, abordando tres caminos para la refl exión: la perspectiva de la efectividad escolar, la perspectiva de la sociedad del conocimiento y el cambio educativo y la perspectiva sociocultural. Desde esta refl exión preliminar se esbozan algunas sugerencias de mejora para los establecimientos, señalando estrategias específi cas según los distintos actores que el contexto educativo convoca.Palabras clave: Relación parental, pobreza, escuela, participación paterna. ABSTRACT This paper focuses on a refl ection on family ties-School in contexts of poverty, the analysis is guided by the assumption that this relationship can be positive or negative depending on the impact that has on children in their learning and the learning environment. The development of the analysis is given

Abstract. Due to the good mechanical properties of forged parts, the forging process plays a decisive role in the manufacturing of seamless stainless steel pipes for oil country tubular goods (OCTG) lines. Tough competition between manufacturers gives them plenty of incentive to make their processes in raw material and energy usage more and more efficient. In this context the expansion process is one of the critical production steps in the manufacturing of seamless stainless steel pipes. This work presents a sensitivity analysis of a finite element method (FEM) for the simulation of the expansion of the alloy UNS N08028. The input parameters ram speed, tool angle, initial ID and final ID of the billet as well as temperature were used to describe responses like tool wear and material loss. With the aim to minimize the tool wear and to reduce the material waste, a study of influence of the input parameters on the mentioned responses were performed. This development is supported by experimental work in order to validate the simulation model. The sector demand for new materials with specific properties and the cost-intensive experimental trials justifies the use of such simulation tools and opens great opportunities for the industry.

RESUMEN:El presente artículo está enfocado en analizar la relación entre cultura juvenil y cultura escolar desde el contexto escolar, para esto se desarrolla una revisión bibliográfica preliminar, que permite comprender las lógicas de ambas culturas. Para terminar identificando tensiones y desafíos que esta relación plantea especialmente para quienes se desempeñan profesionalmente en contextos escolares.Se finaliza con un conjunto de conclusiones, en que se pretende sugerir algunas estrategias de acción con los jóvenes – escolares.Palabras clave: cultura juvenil, cultura escolar, escuela, intervenciones socioeducativas.YOUTH CULTURE AND SCHOOL CULTURE. ANAPPROACH TO A COMPLEX RELATIONSHIP: TENSIONSAND CHALLENGESABSTRACT:This article focuses on analyzing the relationship between youth culture and school culture from the school context, for it develops a preliminary literature review, which allows us to understand the logic of both cultures. Finally identifying tensions and challenges this relationship poses especially for those working professionally in school settings.It concludes with a set of conclusions, which are intended to suggest some strategies for action with young people - school.Keywords: youth culture, school culture, school, social and educational interventions.