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)

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)

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)

The aim of this paper is to argue against the received view among Unamuno scholars that Miguel de Unamuno was defending a sort of pragmatic argument for religious faith and that his notion of religious faith as “querer creer” (“wanting to believe”) is to be identified with William James’s “the will to believe”. As I will show in this paper, one of the aspects that makes Unamuno’s reasoning philosophically relevant is his ability to formulate a non-pragmatist defense of religious faith (...) without a prior commitment to the truth of any religious or theological statement and grounded in our longing for an endless existence through God’s Salvation. (shrink)

We argue that, in certain circumstances, doctors might beprofessionallyjustified to provide abortions even in those jurisdictions where abortion is illegal. That it is at least professionally permissible does not mean that they have an all-things-considered ethical justification or obligation to provide illegal abortions or that professional obligations or professional permissibility trump legal obligations. It rather means that professional organisations should respect and indeed protect doctors’ positive claims of conscience to provide abortions if they plausibly track what is in the best (...) medical interests of their patients. It is the responsibility of state authorities to enforce the law, but it is the responsibility of professional organisations to uphold the highest standards of medical ethics, even when they conflict with the law. Whatever the legal sanctions in place, healthcare professionals should not be sanctioned by the professional bodies for providing abortions according to professional standards, even if illegally. Indeed, professional organisation should lobby to offer protection to such professionals. Our arguments have practical implications for what healthcare professionals and healthcare professional organisations may or should do in those jurisdictions that legally prohibit abortion, such as some US States after the reversal ofRoe v Wade. (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)

Durante la época colonial, en algunos países de Iberoamérica, se desarrolló un movimiento teológico que tuvo como centro el pensamiento escotista. Si bien la complejidad de las ideas de este franciscano abarcó muchos aspectos de las verdades de fe, su impronta se manifestó claramente en un poema escrito por un religioso chileno: Gregorio Farías. Este, siguiendo los parámetros de la épica heroica de corte sacro, dio a luz una obra conocida como la “Scotida”. Allí puso en valor el tema de (...) la Inmaculada Concepción antes de su promulgación dogmática, abordando los ejes que justifica su inclusión en el depósito de la fe. Este estudio analiza los aspectos mariológicos más relevantes de esta obra, anterior a la bula Innefabilis Deus.Durante la época colonial, en algunos países de Iberoamérica, se desarrolló un movimiento teológico que tuvo como centro el pensamiento escotista. Si bien la complejidad de las ideas de este franciscano abarcó muchos aspectos de las verdades de fe, su impronta se manifestó claramente en un poema escrito por un religioso chileno: Gregorio Farías. Este, siguiendo los parámetros de la épica heroica de corte sacro, dio a luz una obra conocida como la “Scotida”. Allí puso en valor el tema de la Inmaculada Concepción antes de su promulgación dogmática, abordando los ejes que justifica su inclusión en el depósito de la fe. Este estudio analiza los aspectos mariológicos más relevantes de esta obra, anterior a la bula Innefabilis Deus. (shrink)

Este texto trabaja a partir de la poesía de José Manuel Arango. Dada la formación filosófica del poeta, se buscó en su obra una reflexión con respecto a las preguntas fundamentales al ser humano y que la filosofía ha intentado responder desde la antigüedad: qué idea del hombre, del mundo y de la existencia hay en su poesía, de tal forma que pudiera establecerse un puente entre la filosofía y la literatura; y derivada de esta última, pero igualmente importante, se (...) indagó por la reflexión estética que allí subyace, su concepción del arte, del artista y particularmente de la poesía. Y ambas preguntas tendieron, a su vez, a un fin común: encontrar la posibilidad de verdad que hay en su obra. (shrink)

This book develops a novel theory of intentionality. It argues that intentionality is an internal essential relation of constitution between an intentional state and an object or between such a state and a possible state of affairs as subsisting. The author's main claim is that intentionality is a fundamentally modal property, hence a non (scientifically) natural property in that it does not supervene, either locally or globally, on its nonmodal physical basis. This is the property, primarily for an intentional mental (...) state, to be constituted by the entities it is about. In the case of intentionality of reference, such constituents are objects, in the sense of individuals; in the case of intentionality of content, such constituents are possible states of affairs as subsisting. Constitution is meant in a mereologically literal sense: those constituents are essential parts of the relevant states. As a result, the theory claims not only that intentionality is relational, but also that is an internal, essential relation holding between an intentional state and its object or proposition-like content. Intentionality as Constitution will be of interest to scholars and advanced students working in philosophy of mind, philosophy of language, metaphysics, and cognitive science. (shrink)