Johannes Kepler dedicated much of his work to discover a law for the refraction of light. Unfortunately, he formulated an incorrect law. Nevertheless, it was useful for anticipating the behavior of light in some specific conditions. Some believe that Kepler did not have the elements to formulate the law that was later accepted by the scientific community, that is, the Snell–Descartes law. However, in this paper, we propose a model that agrees with Kepler’s heuristics and that is also successful in (...) anticipating the behavior of light when it passes through a surface that separates two media with different optical densities. This model adopts strategies that were recommended by Kepler in two types of analogies. The obstacles that led to the failure of the two types of analogies are presented in the article, and we argue that the model proposed here could overcome these specific obstacles. Finally, we show how the proposed model could be articulated with Kepler’s metaphysics of light. (shrink)

At the beginning of the 18th century, Berkeley believed an anomaly pointed out by Isaac Barrow could be regarded as important evidence against the optical theories that had been established and standardized thanks to the works of Kepler and Newton. In this article, we want to show that Berkeley’s treatment of the Barrovian Case does not falsify these theories. We will contend that the strategy used by Berkeley to resolve the anomaly by alluding to a change of convention is a (...) strategy that the classical theorist could use as well. In other words, the classical theorist could also appeal to a change of convention to deal with the problem. (shrink)

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)

El título reproduce las famosas frases de Friedrich Nietzsche y Michel Foucault, quienes de manera alegórica postulaban el agotamiento de dos conceptos centrales que tuvieron larga y fructífera vida en la historia de la humanidad. Para Nietzsche la muerte de Dios es la pérdida de la capacidad ordenadora del mundo, sustentada en una verdad concebida como metafísica y en una moral judeo-cristiana, cuyas raíces las busca el filósofo en la Grecia de Sócrates y Platón.Según Foucault, con la “muerte de Dios” (...) devendría también la muerte de su asesino, el hombre como sujeto de verdad, pues en el siguiente siglo de postmodernidad no aparecerá el esperado Superhombre de Nietzsche, sino la cada vez más devaluada figura del hombre como categoría ontológica, cediendo su lugar central a la primacía del lenguaje. Así, el hombre sale de la posición central en tanto objeto de conocimiento, del saber racional, un desplazamiento del hombre a su sola condición de sujeto pensante y productor de discursos, ya no como privilegiado objeto de dicho pensamiento.Foucault reconoce que es Nietzsche quien inaugura ese cambio de eje. Foucault con su formulación sobre el discurso, el saber y el poder, nos lleva finalmente al punto focal de su investigación, la constitución del sujeto dentro de una sociedad disciplinaria. Nietzsche y Foucault nutren y forman las dos caras de la misma moneda que nos encadena a la economía de la vida. Los sujetos, en ejercicio de nuestra libertad, podemos –como sujetos constituidos- adscribirnos totalmente al orden normativo y la seguridad que nos brinda el ámbito social de pertenencia o podemos –como sujetos constituyentes- utilizar nuestro juicio y ejercer una reflexión crítica de esa sociedad a la que pertenecemos. (shrink)

Na atualidade estamos enfrentando uma forte onda de intolerância e tolerância, potencializando e valorizando a Tolerância como sendo um modelo a seguir, e seria a solução para as fortes condutas violentas, discriminatórias e criminosas que estamos sendo vítimas nas relações interpessoais e nas relações entre culturas e países. Tolerar o desigual, o assimétrico é uma luta desigual, do mais forte contra aquele que pela sua realidade social, tem sido enfraquecido. Como formar uma consciência e uma cultura, não do tolerar-aguentar a (...) partir de minhas condições impostas; mas uma cultura de hospitalidade, de acolhida, de abertura ao distante, ao assimétrico e estranho. A hospitalidade incondicional, ou seja, não coloco nenhuma condição, a única condição para acolher ao estrangeiro que chega do além do horizonte, é não ter condições. Desse modo não acolho uma categoria estrangeiro, mas uma pessoa que tem sua individualidade e sua unicidade. Para uma acolhida com hospitalidade é necessário criar um deslocamento na minha interioridade, me acomodar diferente, o outro que chega sempre provoca um movimento interior e exterior no meu eu; quando não acolho ao assimétrico, colocando condições na sua chegada, nada de novo acontece no eu. Acolher com hospitalidade é a possibilidade de nos experimentar diferente e de inaugurar algo novo em nós, na construção de sermos cada vez melhores, mais humanos, solidários e hospitaleiros. Palavras-chave: Tolerância, Intolerância, Hospitalidade condicional, Hospitalidade incondicional, Estrangeiro. (shrink)

Localization Wireless Sensor Networks (WSN) represent a research topic with increasing interest due to their numerous applications. However, the viability of these systems is compromised by the attained localization uncertainties once implemented, since the network performance is highly dependent on the sensors location. The Node Location Problem (NLP) aims to obtain the optimal distribution of sensors for a particular environment, a problem already categorized as NP-Hard. Furthermore, localization WSN usually perform a sensor selection for determining which nodes are to be (...) utilized for maximizing the achieved accuracy. This problem, defined as the Sensor Selection Problem (SSP), has also been categorized as NP-Hard. While different metaheuristics have been proposed for attaining a near optimal solution in both problems, no approach has considered the two problems simultaneously, thus resulting in suboptimal solutions since the SSP is biased by the actual node distribution once deployed. In this paper, a combined approach of both problems simultaneously is proposed, thus considering the SSP within the NLP. Furthermore, a novel metaheuristic combining the Black Widow Optimization (BWO) algorithm and the Variable Neighbourhood Descent Chains (VND-Chains) local search, denominated as BWO-VND-Chains, is particularly devised for the first time in the author’s best knowledge for the NLP, resulting in a more efficient and robust optimization technique. Finally, a comparison of different metaheuristic algorithms is proposed over an actual urban scenario, considering different sensor selection criteria in order to attain the best methodology and selection technique. Results show that the newly devised algorithm with the SSP criteria optimization achieves mean localization uncertainties up to 19.66 % lower than traditional methodologies. (shrink)

En este artículo analizo la interpretación de Hegel de la filosofía política platónica (particularmente la República) en determinados pasajes de dos obras puntuales: los Fundamentos de la filosofía del derecho y las Lecciones sobre Platón. Considero dos ejes específicos de análisis: la propiedad privada y la libertad subjetiva. El objetivo del artículo es señalar la relación que Hegel establece con Platón o, al menos, con República. Muestro que, en realidad, en este diálogo existen ciertos matices con respecto a los dos (...) ejes mencionados; estos matices implican diferencias de análisis respecto de la lectura hegeliana. (shrink)

Rationale, aims and objectives Given the increasing prevalence of cataract and demand for cataract extraction surgery, patients must often wait to undergo this procedure. We validated a previously developed priority scoring system in terms of clinical variables, pre-intervention health status, appropriateness of surgery and gain in visual acuity (VA) and health-related quality of life (HRQoL).Methods Explicit prioritization criteria for cataract extraction created by a variation of the Research and Development (RAND) and University of California Los Angeles appropriateness methodology were retrospectively (...) applied to a prospective cohort of 5257 patients on waiting lists to undergo cataract by phacoemulsification at 17 hospitals in Spain. Demographic data, clinical data and data related to surgical technique were collected by trained ophthalmologists. Patients were evaluated by their ophthalmologist before the intervention and 6 weeks afterward. They also completed, by mail, the Visual Function Index (VF-14) before the intervention and 3 months afterward.Results High-priority patients experienced greater improvement in VA and HRQoL than those classified as intermediate or low-priority (P < 0.0001), even after adjusting by VA and the VF-14 score at baseline. The time to intervention was the same for high-priority patients as it was for intermediate and low-priority patients.Conclusions The priority score we developed identified patients most likely to experience the greatest improvements from cataract extraction. Use of this tool could provide a fairer and more rational way to prioritize patients for cataract extraction. (shrink)

Resumen Este artículo muestra que la pintura de Tiziano contiene en el fondo un esquema dialéctico de tensión entre elementos opuestos: jovial/trágico, clásico/cristiano, puñal/refugio. Esta tensión alimenta la intersección de estructuras significativas que caracteriza a toda obra de arte. Esta dialéctica explica el sentido último que tiene la pintura para Tiziano. Centramos esta dialéctica en la obra Desollamiento de Marsias, obra que enseña que la pintura, el arte en general, para Tiziano abre heridas, es un puñal, pero también es un (...) abrigo donde el que refugiarnos del horror del mundo. Abstract This article shows that Titian's painting contains at its core a dialectical scheme of tension between opposing elements: jovial/tragic, classical/christian, dagger/refuge. This tension feeds the intersection of meaningful structures that characterize every work of art. This dialectic explains the ultimate meaning of painting for Titian. We focus this dialectic on the work The Flaying of Marsyas, a work that teaches that painting, art in general, for Titian opens wounds, it is a dagger, but it is also a shelter in which to take refuge from the horror of the world. (shrink)

In this paper, I respond to what I have called an epistemological objection to a dialetheist approach to the doctrine of the Incarnation, of which one example is Beall’s contradictory Christ. I discuss Anderson’s book Paradox in Christian theology, in which the author claims to account for the rationality of the doctrine of the Incarnation as a merely apparently contradictory doctrine, and I present my model, based on Anderson’s model, according to which the doctrine has the possibility to be rational (...) by understanding it as genuinely contradictory. I show that this model fits perfectly well with the criteria that, according to Anderson, any model for the rationality of a paradoxical doctrine should meet. Beall does not address the problem of the rationality of the doctrine in his works about the contradictory Christ, and he asserts that he is not interested in it. However, I think that if he wants to make his theory more robust, less suspicious, and more convincing for theologians, philosophers, and ordinary people, he should consider this problem. (shrink)

El objetivo de este artículo es clarificar la noción de «vida auténtica» tal y como es descrita por Joan Roura-Parella en su última obra Tema y variaciones de la personalidad (1950). Por «vida auténtica» se entiende una vida autogobernada, que permite al individuo realizar su propia singularidad y, por tanto, preservar su autonomía y dignidad como persona. Una vida dominada por factores ajenos al propio individuo, sean cuales sean éstos, es una vida alienada, que no permite el desarrollo del individuo (...) en tanto la persona que es. Se señala la relevancia filosófica de la propuesta de Roura-Parella, que es la de ofrecer una justificación no-evidencial para una forma de vida cristiana, agapística. De acuerdo con Roura-Parella, una forma de vida basada en la entrega amorosa para con el prójimo está justificada en tanto que ésta es el resultado último de nuestra propia condición natural, constituyendo así un acto de afirmación personal y siendo, por tanto, condición necesaria para gozar de una vida auténtica — «la vida alcanza su hondo sentido al salirse de sí misma para darse a los demás» (Roura-Parella, Tema y variaciones de la personalidad, 1950, p. 229). Se señalan las diferencias y semejanzas de la propuesta de Roura-Parella con respecto a las de Miguel de Unamuno y Joaquim Xirau, autores que fueron cercanos a Roura-Parella y quienes, aunque partiendo de razonamientos distintos a los de Roura-Parella, también concibieron la entrega amorosa para con el prójimo como un acto de afirmación personal. (shrink)

This paper is a response to Haze’s brief argument for the falsity of the theory that instantial terms refer arbitrarily, proposed by Breckenridge and Magidor in 2012. In this paper, I characterise instantial terms and outline the theory of arbitrary reference; then I reconstruct Haze’s argument and contend that it fails in its purpose. Haze’s argument is supposed to be a _reductio ad absurdum:_ according to Haze, it proves that a contradiction follows from the most basic tenets of the theory (...) of arbitrary reference. I will argue, however, that the contradiction in question follows not from these tenets, but from the surreptitious use that Haze makes of a self-referential expression. I conclude, consequently, that Haze’s argument is nothing more than an illustration of the well-known fact that self-referential expressions produce paradoxical results. (shrink)

In their paper “Brain Data in Context: Are New Rights the Way to Mental and Brain Privacy?” Susser and Cabrera (2024) argue against the notion that specific rights may be necessary to protect “brai...