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)

Closed time-like curves (CTCs) naturally appear in a variety of chronology-violating space{times. In these space{times, the principle of self-consistency demands a harmony between local and global a airs that excludes grandfather-like paradoxes. However, selfexisting objects trapped in CTCs are not seemingly avoided by the standard interpretation of this principle, usually constrained to a dynamical framework. In this letter we discuss whether we are committed to accept an ontology with self-existing objects if CTCs actually occur in the universe. In addition, the (...) epistemological status of the principle of self-consistency is analyzed and a discussion on the information flux through CTCs is presented. (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.

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)

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)

This paper presents a variable neighborhood descent algorithm for the service restoration problem (SRP) in electrical distribution systems. The restoration problem appears when a permanent fault occurs in the system. The fault must be localized and isolated from the rest of the system. As a consequence of the isolation, the downstream area is de-energized and requires restoration. The variable neighborhood descent algorithm features its ability to solve the SRP for radial distribution systems and introduces a strategy that helps to deal (...) with the system’s radiality. Tests are performed using a 53-node test system. The results show that the proposed algorithm can efficiently solve the SRP in a distribution system, and as a deterministic algorithm, the results can be used to help nondeterministic algorithms. (shrink)

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)

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)

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)

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)

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)

An axiomatization of the so-called Teleparallel Equivalent to General Relativity is presented. A set of formal and semantic postulates are elaborated from where the physical meaning of various key concepts of the theory are clarified. These concepts include those of inertia, Lorentz and diffeomorphism invariance, and reference frame. It is shown that Teleparallel Gravity admits a wider representation of space-time than General Relativity, allowing to define properties of the gravitational field such as energy and momentum that are usually considered problematic. (...) In this sense, although the dynamical equations of both theories are equivalent, their inequivalence from a physical point of view is demonstrated. Finally, the axiomatic formulation is used to compare Teleparallel Gravity with other theories of gravity based on absolute parallelism such as non-local and f(T) gravity. (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)

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)

A. Korn: Filosofía argentina. Una posición argentina.--F. Romero: Sobre la filosofía en Iberoamérica. Tendencia contemporánea en el pensamiento hispanoamericano.--S. Ramos: El perfil del hombre y la cultura en México.-- G. Francovich: Pachamama.--J. Cruz Acosta: Evolución de la intelectualidad brasileña en la primera fase del siglo xx. Conclusions.--A. Ardao: El historicismo y la filosofia americana.--F. Schwartzmann: La idea de americano del Sur y limitaciones de esta investigación.--D. Domínguez Caballero: Motivo y sentido de una investigación de lo panameño.--F. Miró Quesada: El (...) impacto de la metafísica en la ideología latino-americana.--El Perú como doctrina.--El Perú, el Occidente, y el mundo.--E. Mays Vallenilla: El problema de America. (shrink)

Anthropology of Consciousness, Volume 33, Issue 1, Page 38-62, Spring 2022.

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 379 the minister of a very influential and liberal congregation. In 1860 he began publication in Cincinnati of The Dial, successor to the New England transcendentalist journal, and used its pages to promote religious liberalism, philosophical transcendentalism, and social reform. In 1863 he went to London where he became the head of the Ethical Society. Under the influence of Feuerbach and "left-Hegelians" he travelled widely in the (...) interests of "free thought." The most amazing of these four, however, is August Willich: an East Prussian soldier, ready to fight again to restore the 1848 revolution in Germany, discouraged by Marx from doing so, emigrating to Cincinnati to raise funds among the German 1848 refugees there and urging them to continue the lost cause in Germany, then wholeheartedly fighting for the Union Cause as a General in the Civil War, and finally joining the Populist revolt. As Easton points out, these four all illustrate the close relation between Hegel and the spirit of 1848. In addition to the stories of these men and their ideals, the volume contains a hundred pages of excellent specimens of their writngs, and copious references to obscure source-materials. The book is both a valuable reference work and an entertaining set of short stories. I--IERBERTW. SCHNEIDER Claremont, CaliJornia Theory of. Man. By Francisco Romero. Translated from the Spanish by William F. Cooper, with an Introduction by William J. Kflgore. (Berkeley and Los Angeles: University of California Press, 1964. Pp. xxix + 324. $8.00.) The late Argentinian philosopher Francisco Romero, who died unexpectedly in 1962 after a brilliant career of more than thirty years of teaching and writing, was by common acclaim of his fellow-philosophers in Latin America their most distinguished philosopher in recent years. He received many honors and distinctions both at home and abroad, including the grand award of honor of the Argentinian Society of Writers. The most eminent philosophers in Latin American prepared a notable Festschri]t in honor of his 70th birthday, whose publication was unfortunately delayed and, therefore, could not be presented to him personally in his life time.1 Franci~o Romero was in fact as well as in acclaim the "Dean of Latin American Philosophy." It was high time that his central work Teorga del Hombre 2 should be translated. It is his magnum opus and represents the most comprehensive and systematic development of his philosophy. Romero was fortunate in having as his translator William F. Cooper who knew Romero personally, and was intimately acquainted with his philosophy. In addition, he had the unusual privilege of doing much of the translation in Romero's own library in Buenos Aires. In short, the translation is a labor of love and esteem.8 I myself had the privilege of coming to know Professor Romero in 1943, when as secretarygeneral of our Philosophical Association I was commissioned to make contact with our Latin American fellow-philosophers with a view to exploring the possibility of organizing InterAmerican congresses of philosophy and of forming an Inter-American society of philosophy, both of which projects, in due season, were accomplished. Romero welcomed these undertakings with characteristic enthusiasm and offered his fullest cooperation and support. He had always been a most active and indefatigable promoter of better understanding between North and South America and, especially, of closer cooperation between the philosophers of 1Homenaje a Francisco Romero, Faculdad de Filosofia y Letras, Universidad de Buenos Aires. Editorial Losada, Buenos Aires, 1952. 8In further attestation of Professor Cooper's special qualification for this translation it should be mentioned that he prepared for the Homenaje, already referred to, the most complete, up-to-date bibliography of Romero's extensive publications as well as an inventory of Romero's many works still in progress at the time of his death. 380 HISTORY OF PHILOSOPHY the two Americas. All members of our association who came to know him in Buenos Aires were warmly welcomed, and no doubt also experienced, as I did, the warm and generous hospitality of Professor Romero and his wife in their home in Martinez. Francisco Romero was not only professor of philosophy at the Universities of Buenos Aires and La Plato, but was also... (shrink)

The contribution of Jesuits to the different fields of knowledge, including philosophy, is historically well known. In fact, since the foundation of the Society of Jesus, in the 16th century, Jesuits from different generations and cultures have taken part in the philosophical debates of their time and their different contexts. Since the foundation of the Society of Jesus, in 1540, the Jesuits, individually and as a body, have engaged in a fruitful dialogue between the Christian tradition and different dimensions of (...) human culture. During almost five centuries, numerous Jesuits taught philosophy in academic institutions all over the world. Some of them have their names recorded in the history of philosophy. Of course, the majority of them is not anymore remembered, despite their valuable contribution to the development of the Jesuit intellectual tradition up to our times. In fact, as an heir of the Roman College, the first academic institution founded by the Society of Jesus, in 1551, the Pontifical Gregorian University, in Rome, is a witness to this tradition, which has been kept alive thanks to the discrete work of both Jesuits and lay intellectuals. Known as the University of the Nations, this institution corroborates not only the capacity of the Jesuit tradition to put faith in dialogue with reason, but also the option to take the concrete reality of each human culture and its historical context as its point of departure. The Jesuits’ willingness to engage in dialogue with different intellectual perspectives is underpinned by one of the most defining traits of the Jesuit charism, namely, the conviction that God can be found and served in all things. Accordingly, Jesuits have adopted, from the beginning, an amenable stance towards the world with its different cultures and intellectual trends. As such, Jesuits have, since the beginning, inhabited the frontiers of human thought. According to the contemporary philosopher Paul Gilbert, SJ, within the institutions under the leadership of the Society of Jesus, it was always possible to maintain an equilibrium between two principles: “intellectual unity” and “openness to the world.” Without detriment to the Jesuit identity, the companions of Ignatius have been willing to dwell in the various dimensions of human reality, in their multiplicity and plurality. Either in the renewal of Aristotle’s and Aquinas’ metaphysics, or in the dialogue with modern philosophers such as Descartes, Kant, or Hegel, and even in the inculturation in non-European contexts, the Jesuits have been able to preserve the Christian tradition through an original development of human culture in all its richness and diversity. With respect to the last century, it has to be acknowledged that a significant number of Jesuits made significant contributions, with recognized competence, to philosophy. Certainly, the 20th century was particularly complex in many respects. It would be enough to recall that this period, which brought with it unprecedented social, scientific, and technological developments, was also the stage for the two World Wars. With the emergence or consolidation of philosophical currents such as Marxism, Phenomenology, Existentialism, Structuralism, and Post-Modernism, the past century was, without any doubt, fascinating from the intellectual point of view. Jesuits such as Karl Rahner, Frederick Copleston, Bernard Lonergan, William Norris Clarke, John F. Kavanaugh, Teilhard de Chardin, Gaston Fessard, Jean Daniélou, Henri de Lubac, Michel de Certeau, Xavier Tilliette, Paul Valadier, Paweł Siwek, Ignacio Ellacuría, Francisco Taborda, Henrique de Lima Vaz and, in the Portuguese context, Diamantino Martins or Júlio Fragata, among many others, were able to engage different philosophical currents, problems and controversies of their times. Faithful to their long tradition of being present in the frontiers of thought, those Jesuits have engaged in a fruitful dialogue with these intellectual trends, offering relevant contributions to different ongoing debates. Within this context, the present volume recalls and discusses the philosophical contribution of some of the most prominent Jesuit protagonists of the intellectual interchange that took place in the 20th century. This volume also intends to celebrate the 75th anniversary of the Revista Portuguesa de Filosofia, which happens just before the inauguration of the Ignatian Year. Decreed by Father Arturo Sosa, the Superior General of the Society of Jesus, this celebratory Year will start on May 20, 2021, precisely 500 years after Ignatius of Loyola, the founder of the Jesuit Order, was wounded at the battle of Pamplona. We are happy that this volume could bring together outstanding specialists in the thought of some of the most prominent Jesuits philosophers of the last century, namely Paul Valadier, Paul Gilbert, Józef Bremer, Jacek Poznański, Alexander Maar, Patrick H. Byrne, M. Ross Romero, Carlos Alvarez, Hélio Pereira Lima, José Gama, Domingos Terra, Gabriel Flynn, Marie-Gabrielle Lemaire, José Sols Lucia, Lorena Zuchel Lovera, Pedro Pablo Achondo Moya, Enzo Solari, Massimo Borghesi, Mendo Castro Henriques, João Barbosa, and Dominique Lambert. In addition, in the celebration of the 100th anniversary of Júlio Fragata’s birth, Maria Teresa Fragata presents a memory of his life and thought. We hope that this volume may be useful to all those interested in the Jesuit philosophical tradition. Hopefully, it will stimulate scholars to pursue a fruitful and creative dialogue with contemporary philosophy, in the footsteps of the Jesuit philosophers featured here. We would like to thank all the authors and all those who, in different ways, made this volume possible. (shrink)

ch. 1. A-L -- ch. 2. M-S -- ch. 3. T-I︠A︡.

The essays in this collection address different aspects of Dewey's philosophy of logic, from his work at the beginning of the twentieth century to the culmination of his logical thought in the 1938 volume, Logic: The Theory of Inquiry.

This work penetrates difficult ethical issues by examining human experience and reasoning in conjunction with actual choices of action.