We address a long-standing debate over whether classical magnetic forces can do work, ultimately answering the question in the affirmative. In detail, we couple a classical particle with intrinsic spin and elementary dipole moments to the electromagnetic field, derive the appropriate generalization of the Lorentz force law, show that the particle's dipole moments must be collinear with its spin axis, and argue that the magnetic field does mechanical work on the particle's elementary magnetic dipole moment. As (...) consistency checks, we calculate the overall system's energy-momentum and angular momentum, and show that their local conservation equations lead to the same force law and therefore the same conclusions about magnetic forces and work. We also compute the system's Belinfante-Rosenfeld energy-momentum tensor. (shrink)

Standard lore holds that magnetic forces are incapable of doing mechanical work. More precisely, the claim is that whenever it appears that a magnetic force is doing work, the work is actually being done by another force, with the magnetic force serving only as an indirect mediator. However, the most familiar instances of magnetic forces acting in everyday life, such as when bar magnets lift other bar magnets, appear to present manifest evidence of magnetic forces (...) doing work. These sorts of counterexamples are often dismissed as arising from quantum effects that lie outside the classical regime. In this paper, we show that quantum theory is not needed to account for these phenomena, and that classical electromagnetism admits a model of elementary magnetic dipoles on which magnetic forces can indeed do work. In order to develop this model, we revisit the foundational principles of the classical theory of electromagnetism, showcase the importance of constraints from relativity, examine the structure of the multipole expansion, and study the connection between the Lorentz force law and conservation of energy and momentum. (shrink)

A physical model of the electron is suggested according to the basic structures of matter (BSM) hypothesis. BSM is based on an alternative concept about the physical vacuum, assuming that space contains an underlying grid structure of nodes formed of superdense subelementary particles, which are also involved in the structure of the elementary particles. The proposed grid structure is formed of vibrating nodes that possess quantum features and energy well. It is admitted that this hypothetical structure could account for the (...) missing “dark matter” in the universe. The signature of this dark matter is apparent in the galactic rotational curves and in the relation between masses of the supermassive black hole in the galactic center and the host galaxy. The suggested model of the electron possesses oscillation features with anomalous magnetic moment and embedded signatures of the Compton wavelength and the fine-structure constant. The analysis of the interactions between the oscillating electron and the nodes of the vacuum grid structure allows us to obtain physical meaning for some fundamental constants. (shrink)

The properties of angular momentum and its connection to magnetic momentum are explored, based on a reconsideration of the Stern-Gerlach experiment and gauge invariance. A possible way to solve the so called spin crisis is proposed. The separation of angular momentum of a quantum system of particles into orbital angular momentum plus intrinsic angular momentum is reconsidered, within the limits of the Schr\"odinger theory. A proof is given that, for systems of more than two particles, unless all of them (...) have the same mass, the possibility of having eigenvalues of the form $(n+1/2)\hbar$ is not excluded. (shrink)

The properties of angular momentum and its connection to magnetic momentum are explored, based on a reconsideration of the Stern-Gerlach experiment and gauge invariance. A possible way to solve the so called spin crisis is proposed. The separation of angular momentum of a quan- tum system of particles into orbital angular momentum plus intrinsic angular momentum is reconsidered, within the limits of the Schrodinger theory. A proof is given that, for systems of more than two particles, un- less all (...) of them have the same mass, the possibility of having eigenvalues of the form (n + 1/2)h is not excluded. (shrink)

The electronic and muonic hydrogen energy levels are calculated very accurately [1] in Quantum Electrodynamics (QED) by coupling the Dirac Equation four vector (c ,mc2) current covariantly with the external electromagnetic (EM) field four vector in QED’s Interactive Representation (IR). The c -Non Exclusion Principle(c -NEP) states that, if one accepts c as the electron/muon velocity operator because of the very accurate hydrogen energy levels calculated, the one must also accept the resulting electron/muon internal spatial and time coordinate operators (ISaTCO) (...) derived directly from c without any assumptions. This paper does not change any of the accurate QED calculations of hydrogen’s energy levels, given the simplistic model of the proton used in these calculations [1]. The Proton Radius Puzzle [2, 3] may indicate that new physics is necessary beyond the Standard Model (SM), and this paper describes the bizarre, and very different, situation when the electron and muon are located “inside” the spatially extended proton with their Centers of Charge (CoCs) orbiting the proton at the speed of light in S energy states. The electron/muon center of charge (CoC) is a structureless point that vibrates rapidly in its inseparable, non-random vacuum whose geometry and time structure are defined by the electron/muon ISaTCO discrete geometry. The electron/muon self mass becomes finite in a natural way due to the ISaTCOs cutting off high virtual photon energies in the photon propagator. The Dirac-Maxwell-Wilson (DMW) Equations are derived from the ISaTCO for the EM fields of an electron/muon, and the electron/muon “look” like point particles in far field scattering experiments in the same way the electric field from a sphere with evenly distributed charge “e” “looks” like a point with the same charge in the far field (Gauss Law). The electron’s/muon’s three fluctuating CoC internal spatial coordinate operators have eight possible eigenvalues [4, 5, 6] that fall on a spherical shell centered on the electron’s CoM with radius in the rest frame. The electron/muon internal time operator is discrete, describes the rapid virtual electron/positron pair production and annihilation. The ISaTCO together create a current that produce spin and magnetic moment operators, and the electron and muon no longer have “intrinsic” properties since the ISaTCO kinematics define spin and magnetic moment properties. (shrink)

Modern physics describes the mechanics of the Universe. We have discovered a new foundation for physics, which explains the components of the Universe with precision and depth. We quantify the existence of Aether, subatomic particles, and the force laws. Some aspects of the theory derive from the Standard Model, but much is unique. A key discovery from this new foundation is a mathematically correct Unified Force Theory. Other fundamental discoveries follow, including the origin of the fine structure constant and subatomic (...) particle g-factors, a slight correction of neutron magnetic moment, a geometrical structure for charge, the quantification of electromagnetic charge as separate from electrostatic charge, a more precise meaning of spin, the quantification of space-resonance in five dimensions, and a new system of quantum units. The Aether quantifies as a fabric of quantum rotating magnetic fields with electromagnetic, electrostatic, and gravitational dipole structures. Subatomic particles quantify as angular momentum encapsulated in a quantum, rotating magnetic field. All quantum, atomic, and molecular processes can be precisely modeled, leading to discrete physics with new understandings and insights. (shrink)

Arnold Sommerfeld introduced the fine-structure constant that determines the strength of the electromagnetic interaction. Following Sommerfeld, Wolfgang Pauli left several clues to calculating the fine-structure constant with his research on Johannes Kepler's view of nature and Pythagorean geometry. The Laplace limit of Kepler's equation in classical mechanics, the Bohr-Sommerfeld model of the hydrogen atom and Julian Schwinger's research enable a calculation of the electron magnetic moment anomaly. Considerations of fundamental lengths such as the charge radius of the proton (...) and mass ratios suggest some further foundational interpretations of quantum electrodynamics. (shrink)

Natural systems are categorized according to their structural and dynamical similarities. A two-dimensional schema is proposed as a kind of "periodic table" of natural systems. Six of eight levels in this schema serve as sources of analogies, two levels are the targets of analogical reasoning. The source domains are the atomic, molecular, macromolecular, micro-organismic, organismic and socio-cultural systems and processes. One of the target domains discussed in the article is the level of subatomic particles. The other target domain, not discussed (...) in the article, could be the level of future supra-national systems. Three types of processes are identified occurring in natural systems: conservation, modification and transformation. Modifications allow a reversible adaptation of a system to environmental influences by changing its internal state. The entirety of all internal states defines the "state space" of the system. Similarities of state spaces between systems of six levels are investigated. A dual-space picture of natural systems can be defined on six levels, the source domains of analogical reasoning. On the subatomic level, space-time is identified as part of the state space of subatomic particles. However, space-time needs a completion by an additional state space in order to obtain a dual-space picture also for subatomic particles. A "basic space" is proposed, so that subatomic particles exist simultaneously in space-time and in basic space. The basic space is assumed to be a circular space, where masses and charges circulate force-free and generate the spin and the magnetic moment of particles. A presumption about the existence of hypothetical matter not detectable in space-time is derived. Such primitive forms of matter could exist in basic space only and represent the dark matter. (shrink)

Heidegger’s oeuvre (> 100 volumes) contains a plethora of comments on contemporary science, or rathertechnosciencebecause, according to Heidegger, science is inherently technical. What insights can be derived from such comments for philosophers questioning technoscience as it is practiced today? Can Heidegger’s thoughts become a source of inspiration for contemporary scholars who are confronted with automated sequencing machines, magnetic resonance imaging machines and other technoscientific contrivances? This is closely related to the question of method, I will argue. Although Heidegger himself (...) was notoriously ambivalent when it came to method, especially in his later writings, his oeuvre nonetheless contains important hints for how a philosophical questioning of technoscience could be practiced, such as: paying attention to language (to the words that we use) or taking a step backwards (towards the moment of commencement of the type of rationality at work). For Heidegger, method means: being underway, and a philosophical method must be developed along the way. After discussing Heidegger’s views on method, both in his earlier and in his later writings, three dimensions of contemporary technoscience will be addressed, namely: technoscientific objects (research artefacts), technoscientific sites (laboratories as unworldly environments) and technoscience as a global enterprise. In the final section, the question will be addressed whether and how a critical encounter between philosophy and technoscience is possible. (shrink)

Subjective perception of sleep is not necessarily consistent with electroencephalography (EEG) indications of sleep. The mismatch between subjective reports and objective measures is often referred to as “sleep state misperception.” Previous studies evince that this mismatch is found in both patients with insomnia and in normal sleepers, but the neurophysiological mechanism remains unclear. The aim of the study is to explore the neurophysiological basis of this mechanism, from the perspective of both EEG power and functional magnetic resonance imaging (fMRI) (...) fluctuations. Thirty-six healthy young adults participated in the study. Simultaneous EEG and fMRI recordings were conducted while the participants were trying to fall asleep in an MRI scanner at approximately 9:00 pm. They were awakened after achieving stable N1 or N2 sleep, or after 90 min without falling into stable sleep. Next they were asked to recall their conscious experiences from the moment immediately prior to awakening. Sixty-one instances of scheduled awakenings were collected: 21 of these after having achieved stable stage N2 sleep; 12, during stage N1 sleep; and, 20 during the waking state. Relative to those awakenings without subjective–objective discrepancy (n = 27), these awakenings with discrepancy (n = 14) were associated with lower θ power, as well as higher α, β, and γ power. Moreover, we found that participants who exhibited the discrepancy, compared with those who did not, evinced a higher amplitude of low-frequency fluctuation levels in the prefrontal cortex. These results lend support to the conjecture that the subjective–objective discrepancy is associated with central nervous system hyperarousal. (shrink)

Hegel clearly established himself against the concept of a Darwinian-type of evolution, i.e. evolution in the objective sense. We have to be mindful that for Hegel the Concept is the Reality of which Nature is the Appearance. So actual movement occurs in the Concept and is only reflected in Nature. For this reason we could not expect Hegel to ever agree with Darwin's theory. It is not that the evidence and theory were not existing during Hegel's time. He was well (...) aware of the existence of this type of thinking throughout history up until his own time. His disagreement is not based upon religious considerations, or considerations of State or politics. It is based upon the Concept as he explains in the Philosophy of Nature. -/- Just as one would not expect to be able to explain the movement of an image in a mirror on the basis of the molecules of the mirror, so too the apprearance of Spirit in Nature can never be decribed on the basis of purely natural considerations. Some indication of Spirit's nature can be found by empirical observation, and corroborated by the same. However, Nature, as thouroughly implicit Reason, i.e. as other than explicit Reason, has its moment of independence from Spirit, but it is not completely determined in that moment. Rather it is ultimately inseparable from Spirit (just as the North pole of a magnet is inseparable from its South pole), and certainly has no intrinsic movement independent of it. (shrink)

Im besonderen philosophischen Kontext des Zwischenkriegsdeutschlands entwickelte der junge Marcuse eine originelle Rezeption in marxistischer Perspektive der existenziellen Phänomenologie und der Lebensphilosophie (I). In seinen ersten Aufsätzen »Beiträge zu einer Phänomenologie des Historischen Materialismus« (1928) und »Über konkrete Philosophie« (1929) orientierte sich diese Rezeption am Projekt der Erarbeitung einer dialektischen Phänomenologie und in Verbindung damit an dem Versuch, die radikale Tat auf den ontologischen Begriff der Geschichtlichkeit zu gründen, ohne eine materielle Komponente zu vernachlässigen (II, III, IV). In der Auseinandersetzung (...) mit dem fundamentalontologisch anmutenden ›Verfall‹ des Daseins entwarf Marcuse überdies die Grundlagen seiner konkreten Philosophie der Praxis (V). (shrink)

El artículo aborda el itinerario biográfico e intelectual del primer Marcuse con el trasfondo del influjo de la Lebensphilosophie diltheyana, la analítica ontológica del Dasein y la hermenéutica de la facticidad heideggerianas en su pensamiento. Hasta su entrada en el Institut für Sozialforschung en 1932, la obra de Marcuse aspira a combinar la ontología fundamental de la historicidad con una antropología filosófica de inspiración marxiana. Sin embargo, Marcuse va a ir abandonando progresivamente cualquier pretensión de fundamentar ontológicamente el materialismo histórico (...) y se orientará hacia el desarrollo de una teoría dialéctica de la sociedad ónticamente situada. (shrink)

El concepto de “maquinación” (Machenschaft) ocupa un lugar central en la obra de Heidegger durante el período comprendido entre 1936 y 1940. En su análisis de la esencia de la época moderna, el filósofo checo de orientación marxista Karel Kosík se apropia de importantes elementos conceptuales procedentes de esta etapa del pensamiento de Heidegger. En concreto, emplea nociones análogas a la de “maquinación”, como “sistema de manipulabilidad”. Ponemos de relieve las semejanzas y puntos de fricción en la descripción de la (...) esencia de la época moderna de ambos pensadores, así como sus respectivas propuestas para poner coto a la primacía técnica y al pensamiento calculador y las resonancias políticas derivadas de sus análisis. (shrink)

Partiendo de un análisis introductorio en torno a las diversas interpretaciones del concepto de historicidad (Geschichtlichkeit) en las obras de W. Dilthey, P. Yorck von Wartenburg y M. Heidegger, se considera seguidamente el modo como esta polémica fue recepcionada por el joven H. Marcuse (1). En discusión con la sociología alemana de su época (K. Mannheim, S. Landshut, H. Freyer), Marcuse pretende continuar el proyecto de inclusión de la historicidad en las ciencias del espíritu iniciado por Dilthey con una orientación (...) ontológica procedente de Heidegger (2). Si primero interpreta a G. W. F. Hegel desde parámetros próximos a la filosofía de la vida (Dilthey) y a la ontología fundamental (Heidegger), a medida que se acerca a la obra de K. Marx el enfoque ontológico y vitalista deja paso a una aproximación materialista, donde conceptos como razón, mediación, libertad y actualidad adquieren un papel preponderante (3). (shrink)

La interpretación de la dialéctica hegeliana que el joven Marcuse lleva a cabo en sus escritos tempranos «Sobre el problema de la dialéctica I y II» (1930-1931) y «Ontología de Hegel y teoría de la historicidad» (1932) contrarresta las críticas de Heidegger a la dialéctica de Hegel. La lectura de ambos autores también diverge en su comprensión acerca del estatuto y el alcance del fenómeno de la temporalidad en la filosofía hegeliana. Sin embargo, cuando dilucida el concepto de historicidad (Geschichtlichkeit) (...) en Hegel, Marcuse advierte la tensión existente en su sistema entre el concepto ontológico de «vida» y la idea del «saber absoluto». A partir de su entrada en el Institut für Sozialforschung, el autor berlinés abandonará la tematización del concepto de historicidad —tarea que había ocupado un lugar central en sus primeros escritos— por considerar que dicho concepto, demasiado distorsionado por la tradición ontológico-existencial, es inconciliable con la dialéctica materialista. (shrink)

El filósofo checo Karel Kosík (1926-2003) llevó a cabo en su obra una recepción crítica del pensamiento de Martin Heidegger. En determinados capítulos de "Dialéctica de lo concreto" (1963), así como en otros ensayos tardíos, elaboró una crítica de la analítica existencial heideggeriana, principalmente a la concepción de la estructura del ser del Dasein como “preocupación” o “cuidado” (Sorge). Nos ocupamos aquí de dilucidar el sentido y el alcance de esta crítica a "Ser y tiempo" (1927).

El filósofo checo Karel Kosík (1926-2003) desempeñó un rol prominente en el seno del movimiento de oposición a los regímenes de Novotný y Husák, contribuyendo tanto a la gestación como a la pervivencia de los anhelos expresados por la población checoslovaca durante la Primavera de Praga. Junto a la contextualización histórica de su obra, se pone también de manifiesto cómo Marx y Heidegger incidieron con igual relevancia en la conformación de su pensamiento. La filosofía de Kosík reviste por ello una (...) singularidad propia que la aleja de las versiones tradicionales del humanismo marxista predominantes a mediados del siglo pasado en el bloque oriental y occidental. (shrink)

En el particular contexto filosófico de la Alemania de entreguerras, el joven H. Marcuse llevó a cabo una original recepción en clave marxista de la fenomenología existencial y de la Lebensphilosophie (I). En sus primeros artículos, «Contribuciones a una fenomenología del materialismo histórico» (1928) y «Sobre filosofía concreta» (1929), esa recepción se orientó al proyecto de elaboración de una fenomenología dialéctica y, vinculado con ello, al intento de fundamentar la acción radical en el concepto ontológico de historicidad (Geschichtlichkeit) sin descuidar (...) su componente material (II, III, IV). Asimismo, en la situación de caída (Verfallen) del Dasein, Marcuse va a otorgar una misión primordial a la filosofía concreta (V). (shrink)

En el presente artículo abordamos la confrontación que ciertos autores pertenecientes al llamado marxismo occidental mantuvieron con la concepción de la vida cotidiana de “término medio” (Durchschnittlichkeit) de "Ser y tiempo" (1927). Nos centramos principalmente en la obra del filósofo checo Karel Kosík (1926-2003), quien, a lo largo de su trayectoria intelectual, llevó a cabo una recepción crítica de la analítica existencial heideggeriana, así como también en los aspectos divergentes y convergentes entre la concepción de la cotidianidad de Martin Heidegger (...) y de György Lukács. En la última sección, se apuntan las posibles sendas de encuentro para un develamiento fenomenológico-marxista de la “verdad” de la cotidianidad. (shrink)

Coincidiendo con su entrada como miembro del equipo de trabajo del Institut für Sozialforschung, Herbert Marcuse comienza a desarrollar una teoría materialista de la sociedad alejada del heideggerianismo de su juventud. Durante el período comprendido entre 1933 y 1936, el autor berlinés escribe una serie de artículos cuestionando la deriva política de la filosofía existencial en Alemania. En ellos se confronta con las versiones vulgarizadas de la Lebensphilosophie y de la fenomenología -encabezadas por Heidegger- que proveyeron una suerte de fundamentación (...) filosófica a la “concepción del mundo” (Weltanschauung) del realismo heroico y a las políticas socio-económicas del Estado total-autoritario. (shrink)

El afán de hallar un soporte antropológico u ontológico fundamental capaz de otorgar validez normativa a la crítica de la sociedad devino un recurso filosófico habitual en las contribuciones teóricas de numerosos autores a lo largo de los siglos XIX y XX. En contraste con la crítica inmanente, que se esfuerza por localizar en la propia realidad social los parámetros normativos y las posibilidades históricas para la crítica y la transformación de esa misma realidad, la crítica antropológica tomaba como criterio (...) para la crítica y la transformación social la remisión a parámetros normativos externos, en concreto la referencia a un concepto de esencia o naturaleza humana ubicado en un nivel ontológico o antropológico fundamental. La facticidad histórica del capitalismo se cuestionaba porque invertía la esencia genérica (Gattungswesen) del ser humano, o bien porque obstaculizaba su adecuada plasmación en el plano óntico de la realidad. Se trataba, en definitiva, de crear las condiciones oportunas para una apropiación por parte del ser humano de su propia naturaleza, de su verdadera esencia. (shrink)

Con la obra de los jóvenes hegelianos (Junghegelianer) concluye el período clásico de la filosofía alemana. Bruno Bauer (1809-1882) fue uno de sus máximos exponentes, considerado en muchos aspectos como mentor del movimiento. En el primer apartado del presente artículo, se contextualiza la figura de Bauer en el trasfondo de las disputas generadas en el seno de la escuela hegeliana. A continuación, se analizan con mayor detenimiento dos nociones centrales en su pensamiento, especialmente durante el período comprendido entre 1829 y (...) 1848: su dialéctica de la autoconciencia infinita (unendlichen Selbstbewußtsein) y la forma adoptada por su crítica pura. (shrink)

One of the most conspicuous features of contemporary modeling practices is the dissemination of mathematical and computational methods across disciplinary boundaries. We study this process through two applications of the Ising model: the Sherrington-Kirkpatrick model of spin glasses and the Hopfield model of associative memory. The Hopfield model successfully transferred some basic ideas and mathematical methods originally developed within the study of magnetic systems to the field of neuroscience. As an analytical resource we use Paul Humphreys's discussion of computational (...) and theoretical templates. We argue that model templates are crucial for the intra- and interdisciplinary theoretical transfer. A model template is an abstract conceptual idea associated with particular mathematical forms and computational methods. (shrink)

The concept of moral wrongness, many think, has a distinctive kind of referential stability, brought out by moral twin earth cases. This article offers a new account of the source of this stability, deriving it from a metaphysics of content: “substantive” radical interpretation, and first-order normative assumptions. This story is distinguished from extant “reference magnetic” explanations of the phenomenon, and objections and replies are considered.

After severe brain injury, one of the key challenges for medical doctors is to determine the patient’s prognosis. Who will do well? Who will not do well? Physicians need to know this, and families need to do this too, to address choices regarding the continuation of life supporting therapies. However, current prognostication methods are insufficient to provide a reliable prognosis. -/- Functional Magnetic Resonance Imaging (MRI) holds considerable promise for improving the accuracy of prognosis in acute brain injury patients. (...) Nonetheless, research on functional MRI in the intensive care unit context is ethically challenging. These studies raise several ethical issues that have not been addressed so far. In this article, Prof. Charles Weijer and his co-workers provide a framework for researchers and ethics committees to design and review these studies in an ethically sound way. (shrink)

One striking feature of the contemporary modeling practice is its interdisciplinarity: the same function forms and equations, and mathematical and computational methods are being transferred across disciplinary boundaries. Within philosophy of science this interdisciplinary dimension of modeling has been addressed by both analogy and template-based approaches that have proceeded separately from each other. We argue that a more fully-blown account of model transfer needs both perspectives. We examine analogical reasoning and template application through a detailed case study on the transfer (...) of the Ising model from physics into neuroscience. Our account combines the analogy and template-based approaches through the notion of a model template that highlights the conceptual side of model transfer. (shrink)

After a brief introduction and review of recent literature on microaggressions, a theoretical typology of three sources of social injustice (oppression, dehumanization, and exploitation) contributes to the theorization of the sources of microaggressions. A selected compendium of words and affective phrases generated in classroom exercises illustrates the nature of the experience of the moment of microaggression. Future research on microaggressions as well as evaluation of practice should examine the experience of microaggression, including being subjected to microaggression, initiating such acts, (...) and observing such acts. (shrink)

In the ancient world, the Greeks believed that all great insights came from one of nine muses, divine sisters who brought inspiration to mere mortals. In the modern world, few people still believe in the muses, but we all still love to hear stories of sudden inspiration. Like Newton and the apple, or Archimedes and the bathtub (both another type of myth), we’re eager to hear and to share stories about flashes of insight. But what does it take to be (...) actually creative? How to have such a flash insight? Turns out, there is real science behind "aha moments." We prefer to call it “intuilytics.”. (shrink)

This paper could be thought of as divided into two parts. In the first I show through a series of thought experiments that it is a mistake to think of one’s individual experience as necessarily belonging to only one particular place, time and organism. In repetitions across a universe large enough to host them, the particular experience that one finds oneself in, which can be individuated only by the detailed type that is the entirety of its momentary subjective content, would (...) exist equally in every occurrence of that type, much as a moment in the plot of a novel would exist equally in every copy of that novel. Each distinguishable subjective moment of experience is thus a ‘moment universal’. In the second part of the paper I draw from this the conclusion that there could not be any proper possessors of lines of experience - that there are no proper persons - no continuing subjects of consciousness and self-interest. About five years after writing this paper I came to see that the particular identity of an experience could not be confined by types of momentary subjective detail any more than it could be confined by particular places, times or organisms. All experience is equally here, now and mine and all conscious organisms are equally I. My argument for this crucial further development is presented in ‘One Self – The Logic of Experience’, Inquiry 33 (1991): pp. 39-68. (shrink)

Besides dialogue with the Jews, Christians were most involved in the dialogue with Muslims. This dialogue was accentuated and became visible especially in modern and contemporary times, with the increase in violence, which had often religious justifications on the part of those involved. The dialogue between Christians and Muslims took a new direction after the attacks of September 11, 2001, in New York and after those that followed in Europe and all over the world. It was discussed in those days (...) and immediately after about the validation of the well know theory of clashes of civilizations, formulated by Samuel Huntington, in his book written in 1996. Starting from these events, within the dialogue between representatives of Christianity and of Islam, there were many other intensive moments that had to be resolved through a profound theological analysis and with understanding and respect from the followers of the two monotheistic religions. (shrink)

There are many controversial theses about intrinsicness and duplication. The first aim of this paper is to introduce a puzzle that shows that two of the uncontroversial sounding ones can’t both be true. The second aim is to suggest that the best way out of the puzzle requires sharpening some distinctions that are too frequently blurred, and adopting a fairly radical reconception of the ways things are.

In this paper, a Magnetic Levitation (MAGLEV) train is designed with a first degree of freedom electromagnetbased totally system that permits to levitate vertically up and down. Fuzzy logic, PID and MRAS controllers are used to improve the Magnetic Levitation train passenger comfort and road handling. A Matlab Simulink model is used to compare the performance of the three controllers using step input signals. The stability of the Magnetic Levitation train is analyzed using root locus technique. Controller (...) output response for different time period and change of air gap with different time period is analyzed for the three controllers. Finally the comparative simulation and experimental results demonstrate the effectiveness of the presented fuzzy logic controller. (shrink)

Deliberative Transformative Moments (DTM) is a new concept that serves as an amendment to the DQI. With this new concept it is easier to get at the quick give-and-take of discussions of small groups of ordinary citizens. As an illustration, we apply the concept to discussions about the peace process among Colombian ex-combatants, ex-guerrillas and ex-paramilitaries. Specifically, we show how personal stories can transform a discussion from a low to a high level of deliberation and how they can have the (...) opposite effect. To increase the level of deliberation in the general population, we recommend that good illustrations of DTM’s should be part of the school programs from an early age on, so that children learn how to discuss with others who have different opinions and values. (shrink)

In the 1881 note 11 [156], Nietzsche mentions the “infinitely small moment” as “the highest reality and truth” for the individual who tries to contrast the “uniformity of sensations” and to affirm his “idiosyncratic taste”. The fragment explores some ideas on the herd instinct that will be developed in "The Gay Science"; observations on the cultural and anthropological value of science; critical refections on metaphysical realism. Most important, these considerations focus on the relationship between man and society, which is (...) the plane of the standardized “normal taste” selected throughout the evolution of mankind. The paper explores these issues and especially deals with the dialectic relationship between the individual and the community viewpoint that Nietzsche seems to take into account. (shrink)

Mechanistic explanations satisfy widely held norms of explanation: the ability to manipulate and answer counterfactual questions about the explanandum phenomenon. A currently debated issue is whether any nonmechanistic explanations can satisfy these explanatory norms. Weiskopf argues that the models of object recognition and categorization, JIM, SUSTAIN, and ALCOVE, are not mechanistic yet satisfy these norms of explanation. In this article I argue that these models are mechanism sketches. My argument applies recent research using model-based functional magnetic resonance imaging, a (...) novel neuroimaging method whose significance for current debates on psychological models and mechanistic explanation has yet to be explored. (shrink)

Magnetic levitation system is operated primarily based at the principle of magnetic attraction and repulsion to levitate the passengers and the train. However, magnetic levitation trains are rather nonlinear and open loop unstable which makes it hard to govern. In this paper, investigation, design and control of a nonlinear Maglev train based on NARMA-L2, model reference and predictive controllers. The response of the Maglev train with the proposed controllers for the precise role of a Magnetic levitation (...) machine have been as compared for a step input signal. The simulation consequences prove that the Maglev teach system with NARMA-L2 controller suggests the quality performance in adjusting the precise function of the system and the device improves the experience consolation and street managing criteria. (shrink)

There are two sides to perceptual consciousness: consciousness and the Thing. Thus far the various thought-components constituent of theThing (the various moments of the Concept of Thing) have been observed. Now it is necessary to consider what thoughts consciousness, itself, experiences in the act of perceiving.

To improve the riding performance and levitation stability of a high‐speed magnetic levitation (maglev) train, a control strategy based on mixed H 2/H4 with regional pole placement and model‐reference controllers are proposed. First, the nonlinear maglev train model is established, then the proposed system is designed to observe the movement of a suspension frame and a control strategy based on mixed H 2/H4 with regional pole placement and model‐reference control method are proposed. Test and analysis of the proposed system (...) has been done using MATLAB toolbox for train levitation height, velocity and current consume. Comparative simulation results show that the mixed H 2/H4 with regional pole placement control strategy has a better performance under the condition of step and random train levitation height. (shrink)

Abstract: Samples of LaxSr1-xMnO3 (x = 0.5, 0.55, 0.6, 0.66, and 0.7) were prepared by the citrate-nitrate autocombustion method. The prepared nano-particles were investigated and characterized using X-Ray diffraction (XRD) and Transmission Electron Microscopy (TEM) to confirm the formation of the samples in single phase without any impurities and to calculate the particle size. The magnetic susceptibility χM was measured as a function of temperature and magnetic field intensity. From χM(T) and M(H) the saturation magnetization (Ms), remanent magnetization (...) (Mr) and coercivity (Hc) of the samples were estimated. The correlation among physical properties and the ratio of divalent cation substitution was discussed and reported to shed more light on technological applications of the investigated samples. (shrink)

Hope and Memory: Lessons from the Twentieth Century by Tzvetan Todorov; David Bellos The Dictators: Hitler's Germany and Stalin's Russia by Richard Overy Stalinism and Nazism: History and Memory Compared by Henry Rousso; Lucy B. Golsan Stalinism and Nazism: Dictatorships in Comparison by Ian Kershaw; Moshe Lewin Did Somebody Say Totalitarianism? Five Interventions in the use of a Notion by Slavoj Zizek.

A collection of material on Husserl's Logical Investigations, and specifically on Husserl's formal theory of parts, wholes and dependence and its influence in ontology, logic and psychology. Includes translations of classic works by Adolf Reinach and Eugenie Ginsberg, as well as original contributions by Wolfgang Künne, Kevin Mulligan, Gilbert Null, Barry Smith, Peter M. Simons, Roger A. Simons and Dallas Willard. Documents work on Husserl's ontology arising out of early meetings of the Seminar for Austro-German Philosophy.

Transcranial magnetic stimulation is used to make inferences about relationships between brain areas and their functions because, in contrast to neuroimaging tools, it modulates neuronal activity. The central aim of this article is to critically evaluate to what extent it is possible to draw causal inferences from repetitive TMS data. To that end, we describe the logical limitations of inferences based on rTMS experiments. The presented analysis suggests that rTMS alone does not provide the sort of premises that are (...) sufficient to warrant strong inferences about the direct causal properties of targeted brain structures. Overcoming these limitations demands a close look at the designs of rTMS studies, especially the methodological and theoretical conditions which are necessary for the functional decomposition of the relations between brain areas and cognitive functions. The main points of this article are that TMS-based inferences are limited in that stimulation-related causal effects are not equivalent to structure-related causal effects due to TMS side effects, the electric field distribution, and the sensitivity of neuroimaging and behavioral methods in detecting structure-related effects and disentangling them from confounds. Moreover, the postulated causal effects can be based on indirect effects. A few suggestions on how to manage some of these limitations are presented. We discuss the benefits of combining rTMS with neuroimaging in experimental reasoning and we address the restrictions and requirements of rTMS control conditions. The use of neuroimaging and control conditions allows stronger inferences to be gained, but the strength of the inferences that can be drawn depends on the individual experiment’s designs. Moreover, in some cases, TMS might not be an appropriate method of answering causality-related questions or the hypotheses have to account for the limitations of this technique. We hope this summary and formalization of the reasoning behind rTMS research can be of use not only for scientists and clinicians who intend to interpret rTMS results causally but also for philosophers interested in causal inferences based on brain stimulation research. (shrink)

In this study, the design and performance investigation of the permanent magnet machines have been done to increase the mechanical and electrical outputs improvement of the systems. A Permanent Magnet DC Motor (PMDM) and Generator (PMDG) have been modelled and designed to improve the angular position and generated current respectively. In this research, augmentation based H2 optimal and H4 synthesis controllers have been designed as a controller for the two systems and a comparison between the proposed controller for tracking a (...) reference inputs and a promising results have been obtained. (shrink)

Russell wrote in 1918 in The Philosophy of Logical Atomism: -/- When I speak of a fact ... I mean the kind of thing that makes a proposition true or false. If I say 'It is raining', what I say is true in a certain condition of weather and is false in other conditions of the weather. The condition of weather that makes my state­ment true (or false as the case may be), is what I should call a 'fact'. If (...) I say, 'Socrates is dead', my statement will be true owing to a certain physiological occurrence which happened in Athens long ago. -/- This classic statement of Russell's version of the correspondence theory of truth is defective on one point only: Russell was unwise to use the word 'fact'. Objects which perform the semantic role Russell accords to facts I shall call simply truth-makers. (shrink)

The professional situation is considered a major interface of practicum training, here conceived as a School of conjunction, a school where one learns to make links, a foundation for the engineering of professionalization. The notion of situation is here developed based on the study of a data corpus elaborated during an experience with a practicum training model centred on writing and the construction of the professional situation by a subject-actor-author of the situation, in interaction with others, in the context of (...) nurse training. The analysis and interpretation of data brings to light a complex and unique unit, constructed in the space-time of a professional practice, a process during which several states succeed one another. The critical moment in action characterizes this unit; it is central to the process, mobilizing reflection in action, internal deliberation, and action-related decision. La situation professionnelle est identifiée comme interface majeure de la formation en alternance conçue ici comme une Ecole de la conjonction, une école où l’on apprend à relier, fondement d’une ingénierie de professionnalisation. La notion de situation est approfondie à partir de l’étude d’un corpus de données constitué au fil de l’expérimentation d’un modèle de formation en alternance centrée sur l’écriture et la construction de la situation professionnelle par un sujet-acteur-auteur de la situation, en interaction avec autrui, dans le contexte de la formation en soins infirmiers. L’analyse et l’interprétation des données permettent de mettre en évidence une unité singulière complexe, construite dans l’espace-temps d’une pratique professionnelle, un processus au cours duquel plusieurs états se succèdent. Le moment critique dans l’action la caractérise ; il occupe la place centrale du processus, mobilisant réflexion dans l’action, délibération intérieure et décision d’action. (shrink)

Epileptogenesis involves an increase in excitatory synaptic strength in the brain in a manner similar to synaptic potentiation. In the present study we investigated the mechanisms of short-term synaptic potentiation in patients with focal epilepsy by using 5 Hz repetitive transcranial magnetic stimulation (rTMS), a non invasive neurophysiological technique able to investigate the mechanisms of synaptic plasticity in humans. Ten patients with focal idiopathic cortical epilepsy were studied. 5 Hz-rTMS (10 stimuli-trains, 120% of motor threshold, RMT) was delivered over (...) the first dorsal interosseus (FDI) motor area of both (affected and unaffected) hemispheres. Changes in the motor evoked potential (MEP) size in the FDI muscle during the trains and the RMT were measured and compared between the hemispheres. 5 Hz-rTMS was also delivered in a group of healthy subjects over both hemispheres. 5 Hz-rTMS in patients elicited a reduced MEP facilitation compared to normal subjects. The reduced MEP amplitude was more evident in the affected hemisphere than in the unaffected hemisphere. RMT in the affected hemisphere was higher than in the unaffected hemisphere and in healthy subjects. Our findings showing a decreased response to 5 Hz-rTMS over the affected hemisphere, differently from the expected results suggest a reduced cortical excitability in epileptic patients. We hypothesize an altered balance between excitatory and inhibitory circuits in epileptic patients under chronic therapy. (shrink)

Both the slasher movie and its more recent counterpart the "torture porn" film centralize graphic depictions of violence. This article inspects the nature of these portrayals by examining a motif commonly found in the cinema of homicide, dubbed here the "pure moment of murder": that is, the moment in which two characters’ bodies adjoin onscreen in an instance of graphic violence. By exploring a number of these incidents (and their various modes of representation) in American horror films ranging (...) from Psycho (1960) to Saw VI (2009), the article aims to expound how these images of slaughter demonstrate (albeit in an augmented, hyperbolic manner) a number of long-standing problems surrounding selfhood that continue to fuel philosophical discussion. The article argues that the visual adjoining of victim and killer onscreen echoes the conundrum that in order to attain identity, the individual requires and yet simultaneously repudiates the Other that constitutes unique subjectivity. (shrink)

One striking feature of the contemporary modelling practice is its interdisciplinary nature. The same equation forms, and mathematical and computational methods, are used across different disciplines, as well as within the same discipline. Are there, then, differences between intra- and interdisciplinary transfer, and can the comparison between the two provide more insight on the challenges of interdisciplinary theoretical work? We will study the development and various uses of the Ising model within physics, contrasting them to its applications to socio-economic systems. (...) While the renormalization group methods justify the transfer of the Ising model within physics – by ascribing them to the same universality class – its application to socio-economic phenomena has no such theoretical grounding. As a result, the insights gained by modelling socio-economic phenomena by the Ising model may remain limited. (shrink)