In this note, the problem of tracking random references and rejecting random perturbations in a quadrotor, both generated by an auxiliary system named exosystem, is solved by extending the deterministic tracking problem to the area of stochastic processes. Besides, it is considered that only a part of the state vector of the quadrotor is available through measurements. As a consequence, the state vector of the plant must be estimated in order to close the control loop. On this basis, a controller (...) to track random references and to reject random perturbations is developed by combining a Kalman filter to estimate the references and perturbations of an exosystem and an observer to estimate the states of a quadrotor. Besides, to obtain a more practical controller, the analysis is carried out in discrete time. Numerical simulations are used in a quadrotor to confirm the validity and effectiveness of the proposed control. (shrink)

In his new book, Carlos Alberto Torres, an internationally renowned critical theorist of education, explores the early writings of Paulo Freire whose ideas have had a tremendous and long-lasting impact on the world of pedagogy and politics. Torres analyzes Freire's works, from the 1960s and 1970s, before Freire gained worldwide recognition for his Pedagogy of the Oppressed. Offering an in-depth look into the formative thinking of Freire, Torres identifies how his ideas produced frameworks for educating global citizens, building (...) community and mutual respect, creating social responsibility, instilling an appreciation for diversity, promoting multiple literacies, and social justice education. This volume is the result of more than 3 decades of research with access to Freire's personal library and the archives of the Paulo Freire Institute, as well as the author's extensive conversations with Paulo Freire over two decades--Dr. Torres was Freire's adviser during his tenure as Secretary of Education in the Municipality of São Paulo, Brazil, 1989-1991. (shrink)

Freire is one of the most powerful voices challenging the hegemony of bureaucratic and banking educational systems. His voice was particularly influential impacting revolutionary processes and progressive social movements while at the same time learning from their practices. However, some silences in his oeuvres requires further examination. In this article, we focus on the silences of Freire regarding education and its relationship with work and labor, gender issues, and citizenship building.

Contemporary popular culture is riddled with references to Mexican drug cartels, narcos, and drug trafficking. In the United States, documentary filmmakers, journalists, academics, and politicians have taken note of the increasing threats to our security coming from a subculture that appears to feed on murder and brutality while being fed by a romanticism about power and capital. Carlos Alberto Sánchez uses Mexican narco-culture as a point of departure for thinking about the nature and limits of violence, culture, and (...) personhood. A Sense of Brutality argues that violent cultural modalities, of which narco-culture is but one, call into question our understanding of “violence” as a concept. The reality of narco-violence suggests that “violence” itself is insufficient to capture it, that we need to redeploy and reconceptualize “brutality” as a concept that better captures this reality. Brutality is more than violence, other to cruelty, and distinct from horror and terror—all concepts that are normally used interchangeably with brutality, but which, as the analysis suggests, ought not to be. In narco-culture, the normalization of brutality into everyday life is a condition upon which the absolute erasure or derealization of people is made possible. (shrink)

First in-depth analysis of this important Mexican philosopher’s work.

Este trabajo defenderá la universalidad de la metáfora en arte (Arthur Danto), contra quienes piensan (Davidson, Carrol, Vilar) que en él la atribución de propiedades expresivas es literal y no metafórica. Se defiende la tesis de que la metáfora artística es como un símbolo tensivo que apunta a significados (epífora) y al mismo tiempo crea presencia (diáfora). Gracias a ambos elementos el arte crea presencia, crea realidad o transfigura lo usual y le otorga súbitas y asombrosas posibilidades de presencia, a (...) las cuales se corresponde no sólo con los sentidos, sino también con el afecto, el entendimiento y la imaginación. (shrink)

A man or woman who has a great spiritual sensitivity, who is interested in matters of faith and religion, or who dedicates a good part of his time to the cultivation of the spiritual life, is almost always associated with a priest or a nun, sometimes even in a derogatory way for the rest of the people. It seems that the interest in the spiritual was something exclusive to some. However, Alexander Schmemann is an example of how a great sensitivity, (...) a deep interest in matters of faith and religion, and a great dedication of time to the cultivation of the spiritual life are combined with being a father of a family. That is why this book will particularly appeal to many men who are already married or who want to be and at the same time want to lead a solid, consistent and coherent life of faith. (shrink)

The objective of the present review on the evolution of Green Chemistry, since its emergence until 2016, aimed an integrated vision of its progress along the three phases of its development: emergence, divulgation and consolidation. The methodology involved the analysis of a selection of bibliography on the evolution of GC collected from issues of the ACS symposia series; editorials in specialized GC journals; and commemorative birthday papers/editorials of these journals and of the GC itself. The analysis allowed to identify and (...) discuss the characteristics and conceptions of GC agents about fundamental concepts and procedures, in order to visualize and better understand the state of knowledge and the subject areas that make up the field. The main alterations identified in the evolution of GC were: it acquired a better defined identity, with more participation of academy and increased scope; was progressively framed in sustainability; has been aspiring to a holistic frame and to a change on the nature of the innovation for its implementation, from incremental to transformative. The analysis suggests that for supporting expansion and consolidation of GC the following aspects deserve attention: full validation of chemical greenness by metrics; better characterization of the frontiers of GC research areas/themes; increased integration between academy and industry; and penetration in chemistry curricula. Its basic philosophy being the practice of a chemistry more focused on the environment preservation, GC means a new stage in nature and in the history of Chemistry. (shrink)

I offer a phenomenological description of undocumented immigrant reason, provisionally understood as a sort of historical reason grounded on undocumented immigrant life. That is, the categories of undocumented immigrant reason are resources for undocumented immigrant existence and are inscribed in the historical memory of immigration (they are shared and communal), accessed by immigrants in stories, anecdotes, and interpersonal trauma. Abstracting from personal experience, testimony, popular culture, and elsewhere, I propose a fragmentary list of these categories of undocumented immigrant reason, a (...) list that includes journeying, crossing/nepantla, uncertainty/zozobra, nostalgia, and return. These categories, which structure undocumented immigrant reason, are reflected in beliefs and attitudes about migration, belonging, the contingency of life, the centrality of memory, and the meaning of death. Constitutive of immigrant rationality are beliefs and ways of being that lend meaning to immigrant life, including those beliefs and ways of being that place immigrants in closer proximity to fundamental human truths. (shrink)

El artículo critica la naturaleza instantánea impuesta a las experienciaselementales en el sistema construccional propuesto por Carnap en Derlogische Aufbau der Welt. Inspirado en una idea seminal de Peirce, propongoalgunas modificaciones a los primeros niveles del sistema construccionalsin dejar de advertir que una adaptación más cuidadosa exige atender otrascríticas sustanciales.

En el artículo se examina la controversia entre extramisionismo e intramisionismo a propósito de la percepción visual. Se defiende que la evaluación del cierre de la controversia depende del explanandum que rastrea el filósofo/historiador en la reconstrucción que persigue. Si enfatizamos en los mecanismos causales, la controversia se cerró en favor del intramisionismo. Si enfatizamos en aspectos asociados con la intencionalidad o con la forma como ciertas afecciones mentales refieren a objetos externos, la controversia conduce a una conciliación entre intramisionismo (...) causal y extramisionismo mental. Finalmente, si ponemos en duda la necesidad de una distinción entre interno/externo, la controversia se disuelve por carecer de sentido. (shrink)

Euclid proposed to trace pyramids as artifacts to facilitate the study of visual perception. The artifact assumes that the object seen delimits the base of a pyramid at the apex of which is the perceived eye. The artifact faces a serious difficulty when we notice that visual perception is carried out with two cooperating eyes. The article discusses two attempts to modify the Euclidean artifact to make it work without giving up the central assumptions. These attempts correspond to the classical (...) studies of Ptolemy’s binocular vision and Ewald Hering’s contributions in the 19th century. (shrink)

This paper traces the concept and phenomenon of generosity from Aristotle to Emannuel Levinas and beyond. The question motivating this investigation is: must the generous act be restricted by a rational calculation of correct, or prudent, giving? Answers to this question vary. Aristotle and Kant would answer in the affirmative, while Emerson and Levinas would not. The bulk of this paper is dedicated to Levinas's characterization of excessive generosity as a condition for the fundamental ethical relation, namely, the generous welcome (...) of the Other. I end by considering the phenomenon of generosity from the point of view of the mid‐20th century Mexican philosopher, Emilio Uranga. (shrink)

The focus of this paper is Mexican historicism. It has three objectives: first, to introduce English-speaking readers to the nature and history of Mexican historicism; second, to defend Mexican historicism against the charges of relativism usually raised against historicism in general and “Mexican” philosophy in particular; and third, to argue for what I call the transcendental, or alternatively, “liberatory,” nature of Mexican historicism—a nature with philosophical and political consequences. The hope is that by making the clarifications and determinations made here, (...) the tradition of Mexican philosophy, of which Mexican historicism is a key moment, may find its place in the increasingly pluralistic US philosophical landscape. (shrink)

This paper explores and expands upon Jorge Gracia's reasons for the apparent lack of Hispanics in US philosophy. The point is to explain the underrepresentation of Hispanics in philosophy, with a focus on a specific subgroup of Hispanics, namely, "homegrown" US Hispanics. This group wasentirely missing from the "established" ranks in Gracia's census. I propose a phenomenological explanation for this lack, rooted in my experience as ahomegrown US Hispanic. This experience gives rise to a sense of identity described as "post-immigrant." (...) Those of us in the American philosophical establishment who share this identity, or who feel its pull, desire but hesitate to fully and authentically engage philosophy and the philosophical life, where thisrequires an uncompromising insertion of our cultural and historical identity into what we write and teach. The reason for the absence of homegrown Hispanicphilosophers who are willing to engage issues related to their circumstance as Hispanics is what I call, "the post-immigrant fear.". (shrink)

Counselling y cuidados paliativos es el título del libro que conjuntamente decidieron escribir la doctora Esperanza Santos y el profesor José Carlos Bermejo. En esta obra de fácil lectura y con consejos muy prácticos y útiles, se presentan elementos fundamentales para brindar un acompañamiento de óptima calidad en el cuidado paliativo, así como la posibilidad de hacer un autoexamen de cómo los cuidadores de los pacientes vienen prestando sus servicios e incluso para no caer en burnout. Este libro es (...) de gran utilidad, tanto para los profesionales de la salud que trabajan en las unidades de cuidados paliativos, como para personas que dedican gran parte de su tiempo al cuidado de familiares con enfermedades terminales o que pasan por procesos prolongados de enfermedad. Con ejemplos de conversaciones de la vida real entre cuidadores y pacientes, la lectura del libro se hace, a la vez, agradable, divertida y profundamente reflexiva. Para citar esta reseña / To cite this review / Para citar esta resenha Rosas-Jiménez CA. Esperanza Santos y José Carlos Bermejo. Counselling y cuidados paliativos. Bilbao: Desclée de Brouwer-Centro de Humanización de la Salud, 2015, 164 pp. ISBN: 978-84-330-2786-3. Pers Bioet. 2019; 23: 137-139. DOI: https://doi.org/10.5294/pebi.2019.23.1.9. (shrink)

O objetivo do texto é problematizar a existência de um possível pensamento informacional ibero-americano. Para tanto, inicialmente constata-se uma relativa ausência da Ibero-América nas apresentações e mapeamentos internacionais da ciência da informação. A seguir, é discutida a realidade dos 22 países que compõem a Ibero-América, região que pode ser compreendida a partir de uma perspectiva sociocultural e geopolítica. Logo após, é feito um panorama, ainda em estágio inicial, das pesquisas em ciência da informação destes países, ressaltando-se a necessidade de continuidade (...) e aprofundamento desse mapeamento. Por fim, apresenta-se uma configuração epistemológica geral da ciência da informação, em nível mundial, evidenciando-se a importância de se situar, nesse quadro, as contribuições específicas da Ibero-América. (shrink)

La tesis de este trabajo es que, respecto de los actos emocionales, en Zubiri se puede hablar de un "sentimiento primordial de realidad". Esta idea nunca se ha afirmado como tal puesto que algunos textos oscuros del autor parecían impedirlo. Reinterpretando no obstante esos textos se ha podido llegar a sostener que la "determinación" intelectiva de la que habla Zubiri no entra "formalmente" en contradicción con la existencia de un acto inmediato y radical de carácter emocional. Se trata de un (...) acto específico, en una unidad con el acto intelectivo y volitivo, en el que se actualiza la realidad como bella, como "belleza real". (shrink)

Wittgenstein defiende que los problemas filosóficos son ilegítimos. Sin embargo, no resulta del todo claro qué se entiende en general por problema filosófico, cuál es, pues, su naturaleza. El presente artículo intenta elucidar la observación de Wittgenstein que sostiene que la forma de un problema filosófico se puede presentar con la expresión “Yo no sé salir del atolladero” (IF § 123). En el artículo se elige, a manera de ejemplo, el escándalo kantiano, que demanda que demostremos con el uso de (...) la razón que la proposición “hay objetos físicos” es verdadera. Sin renunciar al ejemplo, se explora en qué sentido la expresión de Wittgenstein caracteriza en buena medida la naturaleza misma de la dificultad filosófica. En el ejercicio se atienden recomendaciones formales del Tractatus, terapias desplegadas en Sobre la Certeza y el recurso de distinguir entre sentido primario y sentido secundario de una expresión insinuado en las Investigaciones Filosóficas. (shrink)

_First in-depth analysis of this important Mexican philosopher’s work._.

Uma das questões que desafia educadores e educador@s [1], inserid@s no campo da relação que envolve os processos de ensino e de aprendizagem, consiste no papel da educação do ponto de vista da vida em sociedade. E uma resposta aceita de forma genérica aponta para a dimensão da humanização. Questiona-se: até que ponto a relação educativa possui a capacidade e potencialidade de humanizar? Como relacionar a construção do conhecimento à perspectiva de valoração que promova a sociabilidade humana? A partir destes (...) questionamentos abordamos duas dimensões fundamentais: a ética e a moral, campos que estão na base da cultura, do mito, das relações de poder e, portanto, da política. Assim, esse texto objetiva refletir sobre os impactos da ética e da moral nas relações de poder e no processo de humanização, apontando para uma relação dialógica, na perspectiva da alteridade, como uma das saídas viáveis para a humanidade. E para tanto, utilizamos Martin Buber (1974, 1987) e Paulo Freire (1979, 1983) como principais referências teóricas, pensando o papel da educação no enfrentamento deste problema. A partir das leituras, compreendemos o conceito de alteridade, que aponta para o caminho da desmitologização da realidade por meio desta mesma dimensão, que pode ser compreendida no campo da educação. Concluímos que, somente na perspectiva da ética, esta relação pode ser dialógica. E, somente na relação dialógica este processo pode ser transformador e libertador. Esse procedimento educativo potencializa relações de solidariedade e, consequentemente, humaniza em seu significado mais pleno de ser com @ outr@. [1] Utilizamos o símbolo “@” para referenciar de modo simultâneo os gêneros feminino e masculino. Trata-se de um posicionamento político-cultural que vem de encontro às normas gramaticais postas. (shrink)

In a journal entry from 1906, Husserl complains of lacking “internal stability” and of his desire to “achieve” it. My claim in this paper is that the “phenomenological method,” which he made public in his 1907 lectures Die Idee der Phänomenologie was, and is, a means to achieve the inner harmony that Husserl longed for. I do not provide an analysis of why Husserl might have felt the way he did; my aim is to show what internal stability might be (...) and how one might achieve it. I conclude that the phenomenological method is the means, the “how,” to internal stability, which I characterize as “clarity” and “harmony” regarding our beliefs and, and ultimately, our authentic comportment. (shrink)

This paper exammes the construction and de-construction of the "illegal" immigrant in media spectacle and public discourse. I examme the manner in which hnmigrants are rendered "illegal" and then processed through a mechanism of dehumanization where they are simultaneously located in and outside the space of law. In this process, the "illegal" immigrant is stripped of rights, humanity, and intention. The "illegal" immigrant, seen merely as a body or text, becomes a thing—more precisely, a type of equipment, that as equipment, (...) as Martin Heidegger observed, eventually becomes "obtrusive" and thus a target of nativist violence. (shrink)

El presente artículo busca presentar consideraciones bioéticas y antropológicas relacionadas con el documentado hecho de la alta pérdida de embriones que ocurre con la aplicación de las tecnologías de reproducción asistida en humanos. Se ilustran datos numéricos disponibles, provenientes del “2013 Assisted Reproductive Technology. National Summary Report” del CDC. Dada la alta pérdida de vidas humanas en estos procesos y los factores de insolidaridad y de ocultamiento del respeto por el derecho a la vida humana sin excepción, se plantea la (...) existencia de una similitud con la trágica situación de los náufragos de la Medusa, clásica obra de Géricault, en los inicios del siglo XIX. Se intenta, además, desde la disciplina de la bioética, llamar la atención sobre la necesidad de una formación de la conciencia crítica en este tema, pues no todo lo factible técnicamente tiene licitud ética a la luz de la razón. (shrink)

O pensamento filosófico hispânico na segunda metade do séc. XX, potenciou um processo de emancipação cultural e filosófica mais profundas, que destacaram o sentido e o alcance de uma utêntica filosofia, no continente sul-americano. Com tomada de consciência da circunstância americana o que está em causa, é a procura e busca de uma autenticidade da razão latino-americana, a qual na análise que desenvolvo, só terá sentido se integrada numa dinâmica de integração cultural. Esta deverá sempre partir das circunstâncias próprias, e (...) desenvolvida a partir do respeito por um ethos vivencial comum. O presente estudo foi inspirado na obra de Carlos Beorlegui, intitulada Historia del pensamiento filosófico latinoamericano (2004), obra esta que nos apresenta uma visão geral da Filosofia latino-americana desde as cosmovisões pré-colombianas até às correntes filosóficas mais actuais, como é o caso da FL (Filosofia da Libertação), e a da pós-Modernidade ou pós-Colonialidade, comummente conhecida como interculturalismo. (shrink)

O objetivo desse artigo é analisar a projeção visual do México Revolucionário no Brasil entre os anos de 1910 e 1950. Essa projeção ocorre através da fotografia, pintura mural e gravura. Essas imagens conformam um patrimônio visual que constitui uma plataforma de propaganda política e busca de legitimidade do México Revolucionário. Analiso as imagens como um vetor de intercâmbio do imaginário latino-americano, possibilitada por publicações, exposições e redes de sociabilidade de artistas e intelectuais.

Editorial - Dossier: Sanctuaries and Religious Tourism Horizonte, Belo Horizonte, Vol. 16, No. 49, Jan./Apr. 2018.