We discuss the question of whether or not a general Weyl structure is a suitable mathematical model of space–time. This is an issue that has been in debate since Weyl formulated his unified field theory for the first time. We do not present the discussion from the point of view of a particular unification theory, but instead from a more general standpoint, in which the viability of such a structure as a model of space–time is investigated. Our starting point is (...) the well known axiomatic approach to space–time given by Elhers, Pirani and Schild. In this framework, we carry out an exhaustive analysis of what is required for a consistent definition for proper time and show that such a definition leads to the prediction of the so-called “second clock effect”. We take the view that if, based on experience, we were to reject space–time models predicting this effect, this could be incorporated as the last axiom in the EPS approach. Finally, we provide a proof that, in this case, we are led to a Weyl integrable space–time as the most general structure that would be suitable to model space–time. (shrink)

Gregory Bateson is well known for defining information by stating “In fact what we mean by information – the elementary unit of information – is a difference which makes a difference…” This conceptual perspective has the merit of simplicity and generality. Simplicity, in addressing the complexity of information. Generality, in seeking applicability to any and every field of human experience. The purpose of this paper is to focus the applicability of this conceptual approach by Bateson and use it to perform (...) a calculation of taking the difference between two grey-level digital images that are shifted one relative to the other. The digital images take the place of the field of view that a human being would have access through her sense of vision at two different spatial/temporal instances. The results show that it is possible to highlight the edges of the objects under scrutiny, as well as to highlight other differences within the object. Bateson’s “difference that makes a difference” would seem to provide a first step in the elusive meaning making process of humans. (shrink)

The importance of non-codifying DNA polymorphism for the administration of justice is now well known. In Spain, however, this type of test has given rise to questions in recent years: Should consent be obtained before biological samples are taken from an individual for DNA analysis? Does society perceive these techniques and methods of analysis as being reliable? There appears to be lack of knowledge concerning the basic norms that regulate databases containing private or personal information and the protection that information (...) of this type must be given. This opinion survey and the subsequent analysis of the results in ethical terms may serve to reveal the criteria and the degree of information that society has with regard to DNA databases. In the study, 73.20% of the population surveyed was in favour of specific legislation for computer files in which DNA analysis results for forensic purposes are stored. (shrink)

In this contribution, we use the connection between stable polynomials and orthogonal polynomials on the real line to construct sequences of Hurwitz polynomials that are robustly stable in terms of several uncertain parameters. These sequences are constructed by using properties of orthogonal polynomials, such as the well-known three-term recurrence relation, as well as by considering linear combinations of two orthogonal polynomials with consecutive degree. Some examples are presented.

We present an experimental test of the validity of the Pauli Exclusion Principle for electrons based on the concept put forward a few years ago by Ramberg and Snow. In this experiment we perform a very accurate search of X-rays from the Pauli-forbidden atomic transitions of electrons in the already filled 1S shells of copper atoms. Although the experiment has a simple structure, it poses deep conceptual and interpretational problems. Here we describe the experimental method and recent experimental results, which (...) we interpret as an upper limit for the probability to violate the Pauli Exclusion Principle. We present also future plans to upgrade the experimental apparatus using Silicon Drift Detectors. (shrink)

In this paper we describe an experimental test of the validity of the Pauli Exclusion Principle (for electrons) which is based on a straightforward idea put forward a few years ago by Ramberg and Snow (Phys. Lett. B 238:438, 1990). We perform a very accurate search of X-rays from the Pauli-forbidden atomic transitions of electrons in the already filled 1S shells of copper atoms. Although the experiment has a very simple structure, it poses deep conceptual and interpretational problems. Here we (...) describe the experimental method and recent experimental results, which we interpret in the framework of quon theory. We also present future plans to upgrade the experimental apparatus using Silicon Drift Detectors. (shrink)

Pathological tremor is a common but highly complex movement disorder, affecting ~5% of population older than 65 years. Different methodologies have been proposed for its quantification. Nevertheless, the discrimination between Parkinson’s disease tremor and essential tremor remains a daunting clinical challenge, greatly impacting patient treatment and basic research. Here, we propose and compare several movement-based and electromyography-based tremor quantification metrics. For the latter, we identified individual motor unit discharge patterns from high-density surface electromyograms and characterized the neural drive to a (...) single muscle and how it relates to other affected muscles in 27 Parkinson’s disease and 27 essential tremor patients. We also computed several metrics from the literature. The most discriminative metrics were the symmetry of the neural drive to muscles, motor unit synchronization, and the mean log power of the tremor harmonics in movement recordings. Noteworthily, the first two most discriminative metrics were proposed in this study. We then used decision tree modelling to find the most discriminative combinations of individual metrics, which increased the accuracy of tremor type discrimination to 94%. In summary, the proposed neural drive-based metrics were the most accurate at discriminating and characterizing the two most common pathological tremor types. (shrink)

Este libro reúne cinco ensayos originales sobre distintas facetas de la empresa intelectual de Francisco Giner de los Ríos (1839-1915). Se trata de hacer justicia a la variedad y enjundia de sus intereses, como ponen de relieve sus títulos: El concepto de estado individual y su relevancia biopolítica, La idea de arte en F. Giner de los Ríos y sus implicaciones en la vida social, El pensamiento pedagógico-musical de Francisco Giner de los Ríos, El krausismo gineriano y la cuestión de (...) América. Encabezado por un jugoso prólogo acerca de ciertos avatares de la investigación krausológica, este libro quiere contribuir a dilatar y ahondar nuestra imagen del pensador krausista español. El trasfondo de su concepción ética del derecho, el encaje del institucionismo en su teoría de la sociedad, su estimación de la función social del arte, su dedicación a la estética y a la pedagogía musicales, o la repercusión americanista de su cosmopolitismo, constituyen algunas de su claves principales. (shrink)

Counting models for a two conjunctive formula $F$, a problem known as $\sharp $2Sat, is a classic $\sharp $P complete problem. Given a 2-CF $F$ as input, its constraint graph $G$ is built. If $G$ is acyclic, then $\sharp $2Sat can be computed efficiently. In this paper, we address the case when $G$ has cycles. When $G$ is cyclic, we propose a decomposition on the constraint graph $G$ that allows the computation of $\sharp $2Sat in incremental way. Let $T$ be (...) a cactus graph of $G$ containing a maximal number of independent cycles, and let $\overline{T}=-E)$ be a subset of frond edges from $G$. The clauses in $\overline{T}$ are ordered in connected components $\{K_1, \ldots, K_r\}$. Each $, i=1,\ldots,r$ is a knot of the graph. The arrangement of the clauses of $\overline{T}$ allows the decomposition of $G$ in knots and provides a way of computing $\sharp $2Sat in an incremental way. Our procedure has a bottom-up orientation for the computation of $\sharp $2Sat. It begins with $F_0 = T$. In each iteration of the procedure, a new clause $C_i \in \overline{T}$ is considered in order to form $F_i = $ and then to compute $\sharp $2Sat$$ based on the computation of $\sharp $2Sat$$. (shrink)

El presente artículo va a mostrar la manera en que Benjamin realiza una interpretación dialéctica de la cultura de masas y, en concreto, del cine. Primero se abordará la tesis de Benjamin de que en la sociedad industrial desarrollada se produce una crisis del aura y veremos qué consecuencias extrae de tal crisis para la labor artística. También nos ocuparemos del modo en que pone en relación las técnicas artísticas y las transformaciones históricas de la experiencia social. Todo esto nos (...) pondrá en condiciones de afrontar la cuestión nuclear de nuestro trabajo: el modo en que Benjamin interpreta el cine atendiendo a sus efectos para la experiencia del colectivo social. Para terminar, se mostrará cómo este tipo de interpretación de la cultura ha sido continuado de manera fructífera por el crítico cultural más relevante de nuestros días: F. Jameson. Palabras clave: interpretación; cultura; marxismo. (shrink)

John F. Kavanaugh and W. Norris Clarke, two twentieth-century Jesuits, contributed to philosophy through their development of a Thomistic and personalist view of reality emphasizing the human endowments of knowing, freely choosing, and loving. While spiritual exercises played a role in the formation of both Jesuits, the function of spiritual exercises in their own philosophy has not been explored. Recent interest in philosophy as a way of life provides a means by which this can be accomplished. In their work Michel (...) Foucault and Pierre Hadot have shown how spiritual exercises function in the formation of the self and in the acquisition of a synoptic vision that allows contemplation of one’s participation in the whole. This paper shows that while Kavanaugh primarily uses spiritual exercises in his philosophy to accomplish a disciplinary/formational aim Clarke’s aim is dialogical/exploratory. A brief examination of the Spiritual Exercises of Ignatius of Loyola reveals how these different aims in fact complement one another. (shrink)

Sobre la base estudios anteriores el autor expone la recepción de la modernidad "problemática" de Vico en la filosofía española en el exilio. A su vez, se obtienen algunas nuevas categorías que iluminan importantes aspectos de las ideas de estos pensadores "transterrados".Developing precedent studies, the author exposes the reception of the "problematic" modernity of Vico in Spanish banished philosophy. Some new categories are also obtained, that clarify important aspects in the ideas of those expatriated thinkers.

Appearing in English for the first time, Schelling’s 1842 lectures develop the idea that many philosophical concepts are born of religious-mythological notions.

Ensayo introductorio para mi traducción del influyente artículo "Essence and Modality" de Kit Fine.

The concept of ideology is central to the understanding of the many political, economic, social, and cultural processes that have occurred in the last two centuries. And yet, what is the nature of the different ideologies remains a vague, open, and much disputed question. Many political, sociological, and ideological studies have been devoted to ideology. Very little, on the other hand, has been done from the philosophical field. And this despite the fact that there are undoubtedly many philosophical questions related (...) to ideology and its role in modern industrialized societies. Just a few examples of ideology-related philosophical questions suffice to prove the point: What objects do ideologies deal with? Are the ideologies testable? Are there true ideologies? Do they evolve? How are ideologies related to societies? Is the existence of ideologies inevitable in modern societies? What is the relation of ideology to science? Is science just another kind of ideology? Are we, as human beings, innately predisposed to believe in ideologies? Or, instead, ideologies proliferate through indoctrination and propaganda? Are ideologies necessarily harmful?...and much more. In this article I try to answer some of these questions from a philosophical point of view, taking a materialist approach. I begin by characterizing ideology as a complex, multi-layered concept. Then, I briefly discuss the material systems on which ideological movements operate, that is, societies and concrete human groups. I identify at least 11 different elements that seem to be present in most ideologies, and I compare these characteristics with those of contemporary science and technology. Although some superficial similarities can be identified, there are deep differences that make ideology completely different from science. The similarities, however, are stronger with technology. Ideologies continually evolve with technological advances, social changes, and even with mere fashion. The current fragmentation of ideologies caused by the widespread use of new technologies and social networks has given rise to new phenomena of ideological propagation which, in my opinion, are very dangerous, particularly for open societies. I discuss these processes, within the context of the nature vs nurture debate, along with the question of whether we can get rid of ideologies. (shrink)

Educar implica, en gran medida, transgredir la flecha del tiempo y actuar a modo de contratiempo. Los profesores saben bien que, en numerosas ocasiones, para asegurar el éxito de su acción, deben a menudo "perder tiempo" dejándose paradójicamente llevar por él. El conocimiento del tiempo educativo nos introduce en el estudio de este peculiar contratiempo que, a diferencia del tiempo objetivo, predecible y cronométrico que sirve para racionalizar las actividades pedagógicas, permite a los educadores impedir que en educación el tiempo (...) pase, se consuma sin más, fluya o simplemente suceda. De ahí que la autora plantee las relaciones tiempo y educación desde una perspectiva más integradora, incorporando para ello los múltiples tiempos que confluyen en la realidad educativa junto aquéllos que confieren legitimidad al proyecto educativo. La escuela ha venido recreando un modelo no normativo tiempo -básicamente predictivo y probabilístico- y ha aplicado una racionalidad ahistórica que dificulta la emergencia del sujeto al que se dirige y el modelo de sociedad hacia la que se proyecta. En la actualidad se plantea la necesidad de educar desde una nueva perspectiva ética que integre el tiempo como categoría normativa de acción. Educar hoy para mañana exigirá, en este sentido, atender a dos lógicas temporales: impregnar de historicidad la dimensión de sentido de todo proyecto educativo y planificar las acciones pedagógicas de acuerdo con una nueva tecnología temporal que incorpore la incertidumbre, la complejidad, la interdependencia y la sostenibilidad temporal. (shrink)

Las teorías que usamos para representar el mundo pueden ser extremadamente complejas. Abordan temas tales como electrones, campos cuánticos, estrellas de neutrones, materia oscura, redes neuronales, mercados económicos, la atmósfera y muchas otras entidades que suponemos existen en el universo. Al formular nuestras teorías, recurrimos a lenguajes exactos que nos permiten minimizar la vaguedad y expresarnos lo más precisa y cuantitativamente posible. Recurrimos a la matemática. Cuando formulamos nuestras teorías fácticas en lenguaje matemático, estas se refieren no solamente a objetos (...) que nosotros interpretamos como materiales, tales como partículas o personas, sino también a entidades más raras de un mundo abstracto: conjuntos, números, funciones, espacios algebraicos, variedades, topologías, y otras entidades similares. Estos objetos no son materiales en el sentido en que nosotros decimos que una manzana es material. Ellos no existen en el espacio-tiempo, no interactúan, no cambian o evolucionan. Sin embargo, allí están, profundamente arraigados en nuestras teorías más apreciadas acerca del mundo. (shrink)

I offer a theory of art that is based on science. I maintain that, as any other human activity, art can be studied with the tools of science. This does not mean that art is scientific, but aesthetics, the theory of art, can be formulated in accord with our scientific knowledge. I present elucidations of the concepts of aesthetic experience, art, work of art, artistic movement, and I discuss the ontological status of artworks from the point of view of scientific (...) philosophy. (shrink)

This paper starts with one of Chalmers’ basic points: first-hand experience is an irreducible field of phenomena. I claim there is no ‘theoretical fix’ or ‘extra ingredient’ in nature that can possibly bridge this gap. Instead, the field of conscious phenomena requires a rigorous method and an explicit pragmatics for its exploration and analysis. My proposed approach, inspired by the style of inquiry of phenomenology, I have called neurophenomenology. It seeks articulations by mutual constraints between phenomena present in experience and (...) the correlative field of phenomena established by the cognitive sciences. It needs to expand into a widening research community in which the method is cultivated further. (shrink)

Este trabajo se propone dos objetivos, uno descriptivo y otro propositivo. El descriptivo consiste en el análisis de la crítica que realiza E. Cioran, a lo largo de su obra, a la concepción humanista del ser humano Nuestro filósofo pone en cuestión la arrogancia del hombre que se coloca en el lugar fundamental y de supremacía en el ámbito de la vida, lugar que le sirve de justificación para conquistar, apropiarse y aniquilar a la naturaleza y al resto de los (...) vivientes. Por otro lado, en términos propositivos, me interesa plantear la cuestión de la animalidad(el animal que es el ser humano, y los animales no humanos) porque permite poner en cuestión esa concepción humanista, y pensar nuevos modos de ser-con lo viviente. En este sentido, sostengo a lo largo del trabajo que la filosofía de Cioran permite pensar una noción de lo humano atravesada por la animalidad, noción cioraneana que desarma("descompone") la arrogancia de los humanismos. Para ello me serviré de la problemática de la muerte como inmanente a la vida y de la crítica de Cioran a la noción de propiedad. (shrink)

This brief review of Mario Bunge’s research on physics begins with an analysis of his masterpiece Foundations of Physics, and then it discusses his other contributions to the philosophy of physics. Following that is a summary of his more recent reactions to scientific discoveries in physics and a discussion of his position about non-locality in quantum mechanics, as well as his changing opinions on the nature of spacetime. The paper ends with a brief assessment of Bunge’s legacy concerning the foundations (...) of physics. (shrink)

Weaving and unweaving the fabric of sacrifice -- A description of Greek sacrificial ritual -- Sacrificing Socrates: the mise-en-scène of the death scene of the Phaedo -- The search for the most fitting cause -- The so-called genuine philosophers and the work of soul -- Athens at twilight.

With fascinating historical anecdotes and incisive scientific analysis, this important work combines ancient thought with modern theory to reveal a new way of viewing our universe that can expand our awareness, our lives, and may well point the way to a new science for the twenty-first century.

Background: Eye movement desensitization and reprocessing [EMDR] is an innovative, evidence-based and effective psychotherapy for post-traumatic stress disorder [PTSD]. As with other psychotherapies, the effectiveness of EMDR contrasts with a limited knowledge of its underlying mechanism of action. In its relatively short life as a therapeutic option, EMDR has not been without controversy, in particular regarding the role of the bilateral stimulation as an active component of the therapy. The high prevalence of EMDR in clinical practice and the dramatic increase (...) in EMDR research in recent years, with more than 26 randomized controlled trials published to date, highlight the need for a better understanding of its mechanism of action. Methods: We conducted a thorough systematic search of studies published until October 2017, using PubMed, ScienceDirect, Web of Knowledge and Scopus databases that examined the mechanism of action of EMDR or provided conclusions within the framework of current theoretical models of EMDR functioning. Results: Seventy-five studies were selected for review and classified into three overarching models; (i) psychological models (ii) psychophysiological models and (iii) neurobiological models. The evidence available from each study was analysed and discussed. Results demonstrated a reasonable empirical support for the working memory hypothesis and for the physiological changes associated with successful EMDR therapy. Recently, more sophisticated structural and functional neuroimaging studies using high resolution structural and temporal techniques are starting to provide preliminary evidence into the neuronal correlates before, during and after EMDR therapy. Discussion: Despite the increasing number of studies that published in recent years, the research into the mechanisms underlying EDMR therapy are still in its infancy. Studies in well-defined clinical and non-clinical populations, larger sample sizes and tighter methodological control are further needed in order to establish firm conclusions. (shrink)

Comenzamos este texto con una pregunta, por algo que podríamos llamar un signo propio de la época, a saber, la proliferación de aproximaciones espaciales a los más diversos problemas y desde las más diversas disciplinas. No podemos dejar de notar que eso, cuyos signos se dejan recoger a pesar de su dispersión, en algo que llamamos época, sobreviene después de un agotamiento de la radicalización del historicismo y de un pensamiento del tiempo.

There are several types of truths. In this paper I focus on semantic truths, and within these on factual truths. These truths are attributed to statements. I review the theory of the truth proposed by Bunge and discuss some problems that it presents. I suggest that a theory of truth of factual statements should be complemented by a theory of relevance, and propose the basic tenets of it. Finally, I briefly discuss the nature of propositions and the problem of scientific (...) truth in the light of the presented semantic theory. (shrink)

Transformar el modo de vida individual es necesario para abordar la crisis ecosocial, y resulta perentorio que las políticas comprometidas con su resolución promocionen una capacidad individual de acción ecosocial. Sin embargo, parece que cierta brecha motivacional está obstaculizando la transformación del modo de vida individual. A fin de dar respuesta a esta brecha, ensayamos una mixtura del enfoque de las capacidades con las teorías de Hartmut Rosa. Argumentamos que la resonancia natural funge de factor personal de conversión necesario, si (...) bien no suficiente, para la capacidad de acción ecosocial; y que una política que promocione la resonancia natural se adecuaría también a los requisitos impuestos al desarrollo humano tanto por el enfoque de las capacidades como por la sostenibilidad. (shrink)

This is an English translation of Schelling's Ideas for a Philosophy of Nature (first published in 1797 and revised in 1803), one of the most significant works in the German tradition of philosophy of nature and early nineteenth-century philosophy of science. It stands in opposition to the Newtonian picture of matter as constituted by inert, impenetrable particles, and argues instead for matter as an equilibrium of active forces that engage in dynamic polar opposition to one another. In the revisions of (...) 1803 Schelling incorporated this dialectical view into a neo-Platonic conception of an original unity divided upon itself. The text is of more than simply historical interest: its daring and original vision of nature, philosophy, and empirical science will prove absorbing reading for all philosophers concerned with post-Kantian German idealism, for scholars of German Romanticism, and for historians of science. (shrink)

The Western world is experiencing a resurgence of interest in the therapeutic potential of psychedelics, most of which are derived from plants or fungi with a history of Indigenous ceremonial use. Recent research has revealed that psychedelic compounds have the potential to address treatment‐resistant depression and anxiety, as well as post‐traumatic stress disorder and addictions. These findings have contributed to the decriminalization of psychedelics in some jurisdictions and their legalization in others. Despite psychedelics’ opaque legal status, numerous companies and individuals (...) are profiting from speculative investments with few, if any, benefits accruing to Indigenous Peoples. In this paper, we suggest that the aptly named “psychedelic renaissance,” like the European Renaissance, is made possible by colonial extractivism. We further suggest that Indigenous philosophical traditions offer alternative approaches to reorient the “psychedelic renaissance” towards a more equitable future for Indigenous Peoples, psychedelic medicines, and all our relations. (shrink)

La representación científica del mundo se construye sobre un tejido de teorías en las cuales hay enunciados generales que representan leyes naturales. Estas leyes son patrones de sucesos regulares. Un presupuesto básico de la ciencia es que todo acontecimiento es legal: ocurre regido por leyes que son fijas. ¿Es compatible esa legalidad con la libertad de elección que creemos tener? ¿Cuáles son las implicaciones para la libertad política que debemos esperar en una sociedad organizada y racional? ¿Cuál es el rol (...) de la ética en todo esto? Trataré de responder a estas preguntas aquí, defendiendo la concepción de una sociedad abierta, democrática y plural, que maximice la libertad de elección y acción de las personas que la forman. (shrink)