The angular momentum operators for a system of two spin-zero indistinguishable particles are constructed, using Isham’s Canonical Group Quantization method. This mathematically rigorous method provides a hint at the correct definition of (total) angular momentum operators, for arbitrary spin, in a system of indistinguishable particles. The connection with other configuration space approaches to spin-statistics is discussed, as well as the relevance of the obtained results in view of a possible alternative proof of the spin-statistics theorem.

En el actual documento se exponen dos tipos de cerámica policroma precolombina de la Región Gran Nicoya (entre Nicaragua y CostaRica); son jarrones tipo Jicote y Pataky policromo del periodo 1200 d.C. a 1550 d.C., con el fin de analizar las representaciones de animales y sus bandas complejas que generalmente aparecen representadas en la boca superior de las vasijas. Para realizar la base de datos se registraron los datos y las fotografías de vasijas en el Museo Nacional de Costa Rica. (...) A partir de dicha base de datos, se categorizaron 56 vasijas cerámicas Jicote y Pataky, las cuales fueron agrupadas por los motivos o temas representados en las bandas complejas en dos grandes grupos: a) 12 geométricas y b) 42 figurativas. En el caso de las figurativas se detallan seis casos en los que se han redibujado sus bandas hasta lograr posibles esquemas de representación gráfica y semiótica. (shrink)

This paper aims to describe and present, as approach, the research and intellectual process that develops Heidegger his first lessons in Fribourg, The idea of philosophy and the problem of worldview, in which attempts to set up some idea of philosophy as the original science. At the same time, this paper is intended as a contribution to the dissemination and knowledge of Heidegger’s intellectual stage, which in my opinion, allow a deeper and a comprehensive set of understanding his work and (...) thought. (shrink)

Resumen Con su fina sensibilidad para leer los “signos de los tiempos”, G. B. Montini supo percibir, cuando servía pastoralmente en la arquidiócesis de Milán, que una de las grandes dificultades que enfrentaban entonces los cristianos era el oscurecimiento de la conciencia sobre la Iglesia y la creciente pérdida de su propia identidad. No sólo identificó este problema como uno de los principales desafíos pastorales de su ministerio, sino que en su magisterio episcopal ofreció diagnósticos, reflexiones y propuestas de solución. (...) El análisis de ese corpus doc trinal, que aquí se realiza, sirve al mismo tiempo para realzar la riqueza de su un tanto olvidado pensamiento teológico y se presenta como una sugerente cantera para el aquí y ahora de la Iglesia.With his fine sensitivity to read the “signs of the times,” G. B. Montini perceived, when he served pastorally in the Archdiocese of Milan, that one of the great difficulties faced by Christians at that time was the darkening of the awareness about the Church and the growing loss of their own identity. Not only did he identify this problem as one of the main pastoral challenges of his ministry, but in his episcopal magisterium he offered diagnoses, reflections and proposals for solutions. The analysis of this doctrinal corpus, which isperformed here, serves at the same time to enhance the richness of his somewhat forgotten theological thought and is presented as a suggestive quarry for the “here and now” of the Church. (shrink)

Human-wildlife conflicts involving protected predators are a major social and environmental problem worldwide. A critical aspect in such conflicts is the role of state institutions regarding predators' conservation, and how this is construed by affected local populations. These interpretations are frequently embodied in conspiratorial rumours, sharing some common traits related to wild and domestic categories, spatial ordering and power relations. In southern Chile, a one-year, multi-sited ethnographic study of human-animal relations in and adjacent to protected areas was undertaken, foregrounding conspiratorial (...) rumours concerning protected predators. Through an analysis of this study and related international cases, this article argues that the uncritical dismissal of rumours and the categories used to interpret such conflicts have detrimental impacts on the conservation of wild predators. Such rumours should be understood as significant comment devices within human-animal relations and the power dynamics that frame human groups affected by them. (shrink)

In pediatric emergency rooms (ERs), social workers must navigate diverse responsibilities including acting as advocates and liaisons between families and multidisciplinary treatment teams, providing compassionate support to families in crisis, and assessing for and reporting any suspicions of child abuse or neglect. These potentially contrasting roles can place social workers at the center of dealing with ethical dilemmas and advocating against ethical violations, such as bias and discrimination toward families. This qualitative study seeks to gain insight into ethical issues commonly (...) encountered in pediatric ERs by exploring the perspectives of 23 social workers at Level 1 trauma centers in the United States. Thematic analysis was used to develop major themes and subthemes related to ethical violations, dilemmas, and best practices in pediatric ERs. Major themes emerged related to unfair treatment of families (with subthemes of bias, discrimination, and compassion fatigue), ethical dilemmas (with subthemes of cultural issues, safety and system issues), and promoting ethical practices (with subthemes of self-awareness, advocacy, and efforts to change the system). This study provides important insights into ethical issues in pediatric ERs as experienced by social workers and can inform efforts to improve the quality and equity of care for all families in pediatric ERs. (shrink)

Tanto la obra de Hegel en la modernidad como la obra de Tomás de Aquino en el medioevo, representan dos de los mayores esfuerzos que se han realizado en el pensamiento filosófico por dar explicación a las grandes interrogantes y problemas de la metafísica. No cabe duda de que la presencia o inmanencia de lo Absoluto en lo finito, como así también la concepción de la nada, son temas de particular profundidad en la reflexión especulativa y ocupan un lugar de (...) privilegio en la misma. En este escrito se analizarán de forma concisa ambas cuestiones, siguiendo la lectura e interpretación de los dos autores antes mencionados llevada a cabo por el filósofo italiano Cornelio Fabro. (shrink)

This paper extends earlier work by its authors on formal aspects of the processes of contracting a theory to eliminate a proposition and revising a theory to introduce a proposition. In the course of the earlier work, Gardenfors developed general postulates of a more or less equational nature for such processes, whilst Alchourron and Makinson studied the particular case of contraction functions that are maximal, in the sense of yielding a maximal subset of the theory (or alternatively, of one of (...) its axiomatic bases), that fails to imply the proposition being eliminated. In the present paper, the authors study a broader class, including contraction functions that may be less than maximal. Specifically, they investigate "partial meet contraction functions", which are defined to yield the intersection of some nonempty family of maximal subsets of the theory that fail to imply the proposition being eliminated. Basic properties of these functions are established: it is shown in particular that they satisfy the Gardenfors postulates, and moreover that they are sufficiently general to provide a representation theorem for those postulates. Some special classes of partial meet contraction functions, notably those that are "relational" and "transitively relational", are studied in detail, and their connections with certain "supplementary postulates" of Gardenfors investigated, with a further representation theorem established. (shrink)

One of the world's most renowned theoretical physicists, Carlo Rovelli has entranced millions of readers with his singular perspective on the cosmos. In Helgoland, Rovelli examines the enduring enigma of quantum theory. The quantum world Rovelli describes is as beautiful as it is unnerving. Helgoland is a treeless island in the North Sea where the 21-year-old Werner Heisenberg first developed quantum theory, setting off a century of scientific revolution. Full of alarming ideas (ghost waves, distant objects that seem to be (...) magically connected, cats that appear both dead and alive), quantum physics has led to countless discoveries and technological advancements. Today our understanding of the world is based on this theory, yet it is still profoundly mysterious. As scientists and philosophers continue to fiercly debate the theory's meaning, Rovelli argues that its most unsettling contradictions can be explained by seeing the world as fundamentally made of relationships, not substances. We and everything around us exist only in our interactions with one another. This bold idea suggests new directions for understanding the structure of reality and even the nature of consciousness. Rovelli makes learning about quantum mechanics an almost psychedelic experience. Shifting our perspective once again, he takes us on a riveting journey through the universe so we can better understand our place in it. (shrink)

In this article, Carlos Pereda introduces the concept of “colonial reason” and explores how philosophical practices and modes of thought are entwined with colonial political structures of exploitation, exclusion, and oppression. Pereda argues that philosophy in Latin America risks perpetuating and reinforcing the colonial gesture, either by turning to the European centers of thought (thus pursuing debates that always take place elsewhere) or by isolating itself and idealising the “own.” According to Pereda, both approaches fail to dismantle colonial violence (...) within philosophy. In his alternative approach, Pereda outlines principles and methodological criteria for the decolonisation of reason and philosophy. He emphasises the importance of methodological prudence that discerns between innocent, paralysing, and strategic uses of identity expressions and advocates for modes of reading and argumentation that conceive philosophy as an inclusive and ongoing dialogue. In Pereda’s terminology, this entails fostering “permeable reason” that manifests itself through “nomadic thinking,” a form of thinking that is capable of questioning itself and being questioned. (shrink)

Resumen: Tanto en Platón como en Aristóteles el eros es cuestionado como forma de relación con el otro que conduzca a una vida virtuosa y que permita además pensar la vida en común. En la perspectiva de Platón, tal cuestionamiento se daría en favor de una búsqueda de la Belleza que proveería un determinado modelo de philia −el de la philosofía−. En el planteamiento de Aristóteles, el cuestionamiento del eros por particulares se daría en favor de un modelo de philia (...) −la philia virtuosa− prácticamente limitado a un plano ideal −por cuanto los hombres virtuosos son muy raros de encontrar−. En ambos casos, sin embargo, la forma en que se está pensando la philia proveería, en cierto sentido, un modelo ideal de comunidad.: Both in Plato and Aristotle, eros is questioned as a form of relationship with the other that brings us to a virtuous life and enable us to think about life in community. In Plato’s view, such a questioning would be in favor of a search for the Beauty that would offer a particular model of philia −that of philo-sofia−. In Aristotle’s view, the questioning of eros by individuals would be in favor of a model of philia −the virtuous philia− virtually restricted to an ideal level −because it is rare to find virtuous men−. In both cases, however, the way philia is being thought would, in a sense, provide an ideal model of community. (shrink)

Belief systems of human societies are deeply related with animals, which are symbolised in traditional narratives. Here we review reported cases from around the world and our own ethnographic observations from southern Chile, to analyse beliefs associated with owls. In particular, we explore the role that owls play in traditional narratives and the likely reasons of their saliency, including their connections with the extraordinary. For the latter, we utilise the concept of “the uncanny” to analyse how owls generate a feeling (...) of something not simply mysterious but, more specifically, something strangely familiar. Owls trigger unsettling experiences of the “normal,” with the ensuing feelings of unhomeliness, which may explain their saliency across human societies. Finally, we discuss that the uncanny nature of owls is precisely what locates them in a culturally stimulating position and what should be considered by conservationists and politicians to tackle a more integrative approach to owl conservation. (shrink)

After presenting Kripke’s criticism to Frege’s ideas on context dependence of thoughts, I present two recent attempts of considering cognitive aspects of context dependent expressions inside a truth conditional pragmatics or semantics: Recanati’s non-descriptive modes of presentation (MOPs) and Kaplan’s ways of having in mind (WHIMs). After analysing the two attempts and verifying which answers they should give to the problem discussed by Kripke, I suggest a possible interpretation of these attempts: to insert a procedural or algorithmic level in semantic (...) representations of indexicals. That a function may be computed by different procedures might suggest new possibilities of integrating contextual cognitive aspects in model theoretic semantic. (shrink)

Minding Time: A Philosophical and Theoretical Approach to the Psychology of Time offers an innovative philosophical account of the most fundamental kinds of time representation.

Effective vaccines for COVID‐19 are already available to humankind. In Peru, 86 million doses were administered to cover the demand for 33 million Peruvian people. Hence, vaccination has been prioritized in groups: health personnel, subjects with pre‐existing health conditions and those over 65 years of age. However, given the social problems and the public health situation in Peru, this work defends that the priority of vaccination should be focused on the population living in extreme poverty. The method used was an (...) ethical argumentation on the distribution of scarce antiSARS‐CoV2 vaccine in Peru. This argument is based on the analysis of the Peruvian population living in extreme poverty, which presents different layers of vulnerability, and that, in the face of an eventual SARS‐CoV2 infection, these would be exacerbated one after the other, through a cascade effect. This scenario would give rise to new vulnerabilities to those already existing, causing greater damage. Vaccination efforts on this key population would give them the opportunity to continue to find ways to bring food to their homes, significantly reducing the risk of contagion in their environment and mitigating the devastating effect of the local diseases to which they are already exposed. Four objections related to this argument are raised with their corresponding responses. Priority access to the vaccine would significantly reduce the humanitarian harm to people living in extreme poverty, prevailing the principles of justice and equity. (shrink)

Barcelona has become one of the most touristic cities in the world, with more than 18 million visitors per year, coming to a city with only 1.7 million inhabitants. The model of tourism is depredatory, destroying old neighborhoods and pushing Catalans out of the city. At the same time, people from the Global South come to the city, but in more precarious conditions. They find a city that does not welcome them and that puts them in the worst conditions. I (...) want to focus on two movies that present Barcelona as an ill city. On the one hand, we have Woody Allen’s Vicky, Cristina, Barcelona, a movie that shows the upper-class American tourism in a European city. On the other hand, Alejandro González Iñárritu’s Biutiful, also starred by Javier Bardem, shows us another story about Barcelona. This is a movie that pays attention to the bottom of the well, Spanish lower-class workers struggling shoulder to shoulder with lower class migrants, people who will never enjoy the life that Allen`s characters have. In this paper I want to show how film can represent illness in different ways. To do so, I first explain, very briefly, the Barcelona model, a model of inclusive, modern city that Vicky and Cristina enjoy. But, this model insofar as it includes people, it excludes them. I will show the construction of the City from 1888 to 1992/2004 and how it has created spaces of inclusion and exclusion. In the second part, I will analyze the right to housing and the housing crisis that is currently affecting the city. In this part, I want to focus both in the crisis and in the social mobilization that it has brought about. After constructing this context, I will analyze the two movies, as instruments to show/hide the diseases of the city. (shrink)

La humanidad ya dispone de vacunas eficaces contra el COVID‐19. En Perú se administraron 86 millones de dosis para cubrir la demanda de 33 millones de peruanos. Para ello, se ha priorizado la vacunación en grupos clave: personal de salud, sujetos con condiciones de salud preexistentes y mayores de 65 años. Sin embargo, dada la problemática social y la situación de la salud pública en Perú, este trabajo defiende que la prioridad de la vacunación debe centrarse en la población que (...) vive en extrema pobreza. El método utilizado fue una argumentación ética sobre la distribución de la vacuna contra el COVID‐19 en Perú. Esta argumentación se basa en el análisis de la población peruana que vive en extrema pobreza, la cual presenta diferentes estratos de vulnerabilidad, y que, ante una eventual infección por SARS‐CoV‐2, se irían agravando uno tras otro, a través de un efecto en cascada. Este escenario daría lugar a nuevas vulnerabilidades de las ya existentes, causando mayores daños. Los esfuerzos de vacunación en esta población clave les brindaría oportunidad de seguir encontrando formas de llevar alimentos a sus hogares, reduciendo significativamente el riesgo de contagio en su entorno y mitigando el efecto devastador de las enfermedades locales a las que ya está expuesta. Se plantean cuatro objeciones relacionadas con este argumento, con sus correspondientes respuestas. El acceso prioritario a la vacuna reduciría significativamente el daño a las personas que viven en la extrema pobreza, haciendo prevalecer los principios de justicia y equidad. (shrink)

- la prima parte dà una presentazione sommaria dei principali paradigmi di filosofia del linguaggio, mostrando alcune connessioni tra i principali autori di riferimento. Dovrebbe contenere il minimo indispensabile per avere una panoramica delle tematiche della filosofia del linguaggio e addentrarsi negli argomenti in modo più approfondito. La conoscenza dei contenuti di questa parte è un prerequisito per l’esame.

Many of the computing systems programmed using Machine Learning are opaque: it is difficult to know why they do what they do or how they work. Explainable Artificial Intelligence aims to develop analytic techniques that render opaque computing systems transparent, but lacks a normative framework with which to evaluate these techniques’ explanatory successes. The aim of the present discussion is to develop such a framework, paying particular attention to different stakeholders’ distinct explanatory requirements. Building on an analysis of “opacity” from (...) philosophy of science, this framework is modeled after accounts of explanation in cognitive science. The framework distinguishes between the explanation-seeking questions that are likely to be asked by different stakeholders, and specifies the general ways in which these questions should be answered so as to allow these stakeholders to perform their roles in the Machine Learning ecosystem. By applying the normative framework to recently developed techniques such as input heatmapping, feature-detector visualization, and diagnostic classification, it is possible to determine whether and to what extent techniques from Explainable Artificial Intelligence can be used to render opaque computing systems transparent and, thus, whether they can be used to solve the Black Box Problem. (shrink)

The concept of freedom is not just another concept in Kierkegaard’s thought. On the contrary, it is one of the most significant issues which the Danish philosopher deals with. Thus, the article examines the meaning of this concept within the philosophy of Kierkegaard by following the interpretation of Cornelio Fabro. In order to achieve such a purpose, firstly, the general features of the thought of the Italian philosopher are presented. Subsequently, the metaphysical foundation for Human freedom within the thought of (...) Kierkegaard is developed. Afterwards, the radical determination of the will in its choice of evil and sin are analyzed, as well as the existential reality of Self as the first principle of action. Lastly, the dispute that Kierkegaard has with Hegel, which motivates his writings, is briefly exposed; and some of the ideas that Fabro takes from the Danish philosopher are listed. (shrink)

En virtud del carácter difuso que Foucault atribuye a las relaciones de poder, es posible afirmar que la sujeción de los cuerpos nunca es absoluta, de modo que estos no son algo inexorablemente determinado por el ejercicio del poder. En este artículo se muestra de qué manera el cuerpo, en tanto que blanco principal de un poder preponderantemente físico, puede en forma eventual constituirse en escenario de des-sujeción y resistencia, en el “lugar” desde el cual ese mismo poder puede ser (...) resistido. Esto, gracias a lo que en este artículo se describe como una “condición heterotópica” del cuerpo, que implicaría la excedencia y el desbordamiento de los procesos de sujeción, y que, en última instancia, permitiría hablar del “cuerpo experiencial” como el espacio en el que tendría lugar la puesta en cuestión de la propia subjetividad. (shrink)

La instancia filosófica del cominciamento hace referencia a aquel paso absolutamente primero del pensamiento, que es presupuesto y fundamento de todo contenido, modo y acto ulterior del propio pensar. En la modernidad, la instancia del inicio es reivindicada por Hegel, quien, al igual que Tomás de Aquino en el medioevo, concibe el “ser” como punto de partida del pensamiento. A pesar de esta convergencia entre ambos autores, presentan una profunda divergencia especulativa. Tanto la convergencia como la divergencia mencionadas serán examinadas (...) en este trabajo, siguiendo las investigaciones del filósofo italiano Cornelio Fabro. (shrink)

Se examinan algunas cuestiones relacionadas con el devenir causal de los seres crea-dos –en particular, los seres espirituales–, sobre la base de la noción metafísica de participación desarrollada por Tomás de Aquino. La aproximación parte de las exégesis y comentarios de Cornelio Fabro a las doctrinas tomistas.

El presente trabajo tiene como finalidad exponer la discusión entre Kierkegaard y Hegel en torno a la noción de libertad, de acuerdo con la interpretación que ofrece concretamente sobre la misma el filósofo italiano Cornelio Fabro. De este modo, se mencionarán primeramente algunos de los puntos principales de estudio que aborda el filósofo italiano en su obra. Posteriormente se analizarán las posiciones especulativas que Hegel y Kierkegaard desarrollan, respectivamente, sobre el tema en cuestión. Por último, se realizarán algunas apreciaciones sobre (...) la instancia existencial que presenta el pensador danés y que Fabro destaca. (shrink)

El objetivo del presente artículo es mostrar el influjo decisivo del pensamiento de Friedrich Schelling en la reflexión existencial de Søren Kierkegaard. Primeramente, se describe el contexto histórico en el cual el filósofo alemán retoma el dictado de clases y el impacto que producen las lecciones sobre Philosophie der Offenbarung en el joven Kierkegaard. Posteriormente, se examinan las tesis principales que contiene el curso de Schelling y la apropiación, reinterpretación y desarrollo de ellas por parte de Kierkegaard en su famoso (...) escrito Begrebet Angest. Finalmente, se concluye que la posibilidad infinita de la libertad y la distinción entre esencia y existencia, principios kierkegaardianos fundamentales, son proposiciones de Schelling que devienen en el pensador danés una intuición única e inseparable. (shrink)

El presente artículo pretende analizar los efectos transformadores que la pandemia por Covid-19 ha obrado en nuestras existencias individuales y en nuestra convivencia social cotidiana desde la propuesta analítica del filósofo surcoreano Byung Chul-Han. Dicha transformación es de tal profundidad que, para nuestro autor, viene a exacerbar los males de la sociedad contemporánea, como el agotamiento y el cansancio por autoexplotación y permanente optimización de sí mismo propiciados por el neoliberalismo globalizado y omnipresente en Occidente. Desde esta constatación analizaremos en (...) particular cómo la prevalencia de la comunicación digital obligada por la emergencia viral trae consecuencias antropológicas que amenazan con eliminar lo esencial de la vida humana: la construcción de rituales, la estructura temporal cotidiana, el contacto corporal con los demás, la pertenencia a una comunidad y la apreciación de lo real en su genuina dimensión ontológica. Finalmente, exploraremos una posible salida a la alienación virtual en que forzadamente se encuentra la sociedad contemporánea. (shrink)