Projection Methods for some Constrained Systems

This article is concerned with a geometric tool given by a pair of projector operators defined by almost product structures on finite dimensional manifolds, polarized by a distribution of constant rank and also endowed with some geometric structures (Riemann,resp.Poisson,resp.symplectic).The work is motivated by non-holonomic and sub-Riemannian geometry of mechanical systems on finite dimensional manifolds.Two examples are given

Physical Activity And Reducing Sedentary Behavior During The Coronavirus Pandemic

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Socialización preventiva ante el ciberacoso

El ciberacoso ha aumentado en los últimos años, sobre todo entre el colectivo adolescente. Más del 40% de los menores en el mundo se ha sentido en algún momento de su vida acosado a través de las tecnologías de la comunicación y la información (TIC). Esta situación se agrava en España, ya que el 86% de los menores entre 8 y 12 años tienen este mismo sentimiento. Este articulo analiza, a través de la literatura científica, el ciberacoso que se produce a través de algunas aplicaciones y plataformas online. Además de estudiar las actuaciones que ayudan a superarlo y a erradicarlo

La Verneda-Sant Martí Adult School: A Reference for Neighborhood Popular Education

The Adult School of La Verneda-Sant Martí, located in Barcelona, Spain, is a reference at the international level because of its trajectory and its contributions to the transformative movement in democratic education. The school was created in 1978 to address the demands of the La Verneda neighborhood's working-class residents, who needed an adult school that could reverse the lack of academic education of neighborhood adults. This school builds on the precedents of popular education developed by the libertarian movement prior to the Franco dictatorship. Since its beginnings, the school has continuously taught people to read and write, helping adults obtain academic degrees that facilitated their labor insertion or promoted their access to university. The school's success is confirmed by the current data: It has approximately 2,000 participants, 5 workers, and 150 volunteers. The key to its success is an effective democratic organization and functioning as well as broad development of activities and an accessible schedule the school is open Monday through Sunday, from 9 a.m. until 10 p.m. ¿that meets the real needs of neighborhood residents. The adult participants, together with the teachers and the volunteers, determine and organize the activities that will be conducted in the school

Candeeiro musical : três histórias de vida em formação com a música e a construção de memórias na cultura popular

Dissertação (mestrado)—Universidade de Brasília, Instituto de Artes, Departamento de Música, Programa de Pós-Graduação Música em Contexto, 2021.Esta pesquisa tem como objetivo compreender e compartilhar processos de formação com a música a partir das histórias de vida de três reconhecidos músicos populares do Brasil. O recorte do tema propõe a problematização da construção da memória como seu elemento estruturante. Realizado à luz da pesquisa (auto)biográfica, o estudo parte do desenvolvimento do conceito de musicobiografização para a coleta e análises de seus materiais de pesquisa. Como parte integrante e essencial do trabalho, as três entrevistas narrativas realizadas com os participantes são registradas e divulgadas em formato de áudio como episódios de um programa de podcast intitulado Candeeiro Musical. Como mote para o enredo deste texto, temos as obras de Mário de Andrade e João Guimarães Rosa como ponto de encontros entre as três histórias de vida e também a de seu autor, construindo assim uma linha narrativa que traça semelhanças e diferenças. A partir da questão norteadora: a quem interessa criar, manter e divulgar a memória da música popular brasileira? e da construção de um panorama do contexto sócio-histórico-cultural brasileiro, a pesquisa se vale da metodologia de análise de José Miguel Marinas denominada Compreensão Cênica para elucidar de que maneira os participantes se utilizam das ferramentas criativas da tradição oral em sua formação. Como resultados, o estudo apresenta a compreensão da memória como uma entidade que é constituída de duas partes igualmente importantes e complementares, um acervo patrimonial e um repertório sensível e, assim, aponta caminhos para o campo da educação musical.This research aims to understand and share formation processes with music from the life stories of three renowned popular musicians from Brazil. The theme section proposes the problematization of the construction of memory as its structuring element. Fulfilled with the (auto)biographical research, the study starts from the development of the concept of musicobiografização for the collection and analysis of its research materials. As an integral and essential part of the work, the three narrative interviews conducted with the participants are recorded and released in audio format as episodes of a podcast program entitled Candeeiro Musical. As a motto for the plot of this text, we have the works of Mário de Andrade and João Guimarães Rosa as a meeting point between the three life stories and also that of their author, thus building a narrative line that traces similarities and differences. From the guiding question: who is interested in creating, maintaining and disseminating the memory of Brazilian popular music? and the construction of a panorama of the Brazilian socio-historical-cultural context, the research draws on José Miguel Marinas' analysis methodology called Scenic Comprehension to elucidate how the participants use the creative tools of oral tradition in their formation. As a result, the study presents the understanding of memory as an entity that is constituted of two equally important and complementary parts, a heritage collection and a sensitive repertoire, and thus, points out paths to the field of music education