The angular momentum operators for a system of two spin-zero indistinguishable particles are constructed, using Isham’s Canonical Group Quantization method. This mathematically rigorous method provides a hint at the correct definition of (total) angular momentum operators, for arbitrary spin, in a system of indistinguishable particles. The connection with other configuration space approaches to spin-statistics is discussed, as well as the relevance of the obtained results in view of a possible alternative proof of the spin-statistics theorem.

Within a geometric and algebraic framework, the structures which are related to the spin-statistics connection are discussed. A comparison with the Berry-Robbins approach is made. The underlying geometric structure constitutes an additional support for this approach. In our work, a geometric approach to quantum indistinguishability is introduced which allows the treatment of singlevaluedness of wave functions in a global, model independent way.

Resumen: Este artículo expone el papel del otro y de lo otro en la hermenéutica de Gadamer a la luz de la idea de diálogo. Para comprender se requiere reconocer lo otro en su carácter de tú, asumir que no se tiene distancia frente a él y estar abierto a acoger lo dicho por él como una posible verdad. La compresión posee una estructura dialéctica que implica la cancelación de las propias expectativas y el acceso a un saber más abarcante. (...) Aunque la comprensión es histórica, en ella se muestra cada vez un aspecto de la cosa misma, que resulta de la interacción del yo y el tú en el curso de la conversación hermenéutica y que constituye una verdad común con caracteres análogos a los del saber de tipo práctico.: The paper shows the role of the other in Gadamer’s hermeneutics in the light of the idea of dialogue. Understanding requires the recognition of the other as a thou, the acceptance of the lack of distance from him and the openness to embrace what is said by him as a possible truth. Understanding has a dialectical structure that implies the cancellation of one’s own expectations and the access to a more comprehensive knowledge. Even though every understanding is historical, it discloses an aspect of the thing itself which results from the interaction of the I and the thou during the process of hermeneutical conversation and constitutes a common truth that has analogous characteristics to practical reason. (shrink)

RESUMO O presente artigo pretende sistematizar os principais elementos do conceito de "cena", termo fundamental para a conexão entre teoria e método no pensamento do filósofo francês Jacques Rancière. O "método da igualdade" empregado por Rancière pretende, entre outras coisas, delimitar os diferentes momentos de conflito entre regimes de verdade e atos de tomada da palavra - independentemente de classificações feitas a priori como dados para se investigar um objeto de estudo - por meio do conceito de "literalidade", que demonstra (...) duas lógicas distintas de circulação das palavras: de um lado, uma lógica "policial"; de outro, uma lógica "política". Desta maneira, o conceito de "cena" é um elemento central em uma significativa mudança da relação teoria-metodologia-objeto defendida por boa parte do meio acadêmico, inclusive na área de história, nos dias atuais, uma vez que toma a própria noção de historicidade como descontínua e considera amplamente a racionalidade das palavras em vez da minuciosa articulação dos fatos. ABSTRACT This article intends to systematize the main elements of the concept of 'scene', a fundamental term for the connection between theory and method in the thought of the French philosopher Jacques Rancière. Rancière's 'method of equality' aims, among other things, to delineate the different moments of conflict between regimes of truth and acts of taking the word - regardless of classifications made a priori as data to investigate an object of study - through of the concept of 'literality', which demonstrates two distinct logics of word circulation: on the one hand, a 'police' logic; on the other, a 'political' logic. In this way, the concept of 'scene' is a central element in a significant change in the theory-methodology-object relation defended by a fair amount of the academic world, including in history field, nowadays, since it takes the very notion of historicity as discontinuous and broadly considers the rationality of words rather than the detailed articulation of facts. (shrink)

Resumen Ante el dilema de si la Lógica de Hegel debe entenderse como una ontología o como una continuación del proyecto kantiano de la lógica trascendental, el artículo sostiene que no es propiamente una ontología, ni un análisis de conceptos y categorías subjetivas. Su vocación metafísica se basa en el postulado según el cual la reflexión del pensamiento sobre sí mismo tiene consecuencias para la comprensión del ser de lo que no es pensamiento, de modo que resulta ser un proyecto (...) novedoso de ontología mediada por la autorreflexión del pensar.This text faces the dilemma whether Hegel’s Logic must be understood as ontology or as continuation of the Kantian project of transcendental logics. It upholds the thesis that Hegel’s Logic is not properly an Ontology -a direct and immediate description of object’s immanent way of being- nor an analysis of merely subjective concepts and categories. The metaphysical vocation of Hegel’s Logic draws rather on the claim that thought’s self-reflection has necessarily consequences for the comprehension of the being of all that is not thought. Hence, we are facing a groundbreaking project of an ontology that is mediated by thought’s self-reflection. (shrink)

A kind of “ruthless reductionism” characterized the experimental practices of the first two decades of molecular and cellular cognition. More recently, new research tools have expanded experimental practices in this field, enabling researchers to image and manipulate individual molecular mechanisms in behaving organisms with an unprecedented temporal, sub-cellular, cellular, and even circuit-wide specificity. These tools dramatically expand the range and reach of experiments in MCC, and in doing so they may help us transcend the worn-out and counterproductive debates about “reductionism” (...) and “emergence” that divide neuroscientists and philosophers alike. We describe examples of these new tools and illustrate their practical power by presenting an exemplary recent case of MCC research using them. From these tools and results, we provide an initial sketch of a new image of the behaving organism in its full causal-interactive complexity, with its molecules, cells, and circuits combined within the single system that it is. This new image stands in opposition to the traditional “levels” image of the behaving organism, and even the initial sketch we provide of it here offers hope for avoiding the dreary metaphysical debates about “emergence” and “downward causation,” and even the reduction vs. anti-reduction dispute, all dependent upon the familiar “levels” image. (shrink)

In this article, I argue that the main contribution of Hegel's philosophy of right to the contemporary political debate is that it opens a window on the idea that liberalism and individual freedom are incompatible. My main thesis is that the liberal conception of the State and law, structured from a nonrelational account of singularity, ends up denying the individual freedom that it claims to defend. I begin by reconstructing the Hegelian concept of freedom from its most general lines, showing (...) that being free consists in wanting to become someone and not so much in wanting to do something. After showing that the purpose of becoming someone can only be fulfilled in a social medium, I focus on Hegel's critique of the liberal state (as expounded in the section on “civil society”). I argue that civil society structurally impedes individuals from realizing their purpose of becoming someone: the economical interactions of civil society give rise to impersonal and inscrutable mechanisms, which take the social conditions of people's individuation beyond their control. Finally, I claim that (rational) individual freedom consists in being able to thematize and democratically control the very social conditions of individuation through the State and law. (shrink)

This paper offers some insights and clarifications of the paramount role that Mexico has had in the forging of first-order cybernetics. Our account starts with Arturo Rosenblueth as a key intellectual figure in the foundation and formation of the field. After revisiting a historical context of people and places, we proceed to a cultural and media archeological investigation that helps us obtain new insights into the ongoing effort to intertwine the complex intellectual networks across different countries in Latin America, North (...) America, and Europe. We then present cases and first-hand interviews to discuss the legacy of cybernetics in Mexico around institutions where Rosenblueth was affiliated, mainly the Institute of Cardiology and, later on, the CINVESTAV at the Instituto Politécnico Nacional. We claim that subjective affinities are as important as common scientific goals to establish and keep connections alive, necessary to the development of a research field. As the active compound in spicy peppers, capsaicin represents a local component to the definition of cybernetics. Ultimately, the paper aims to contribute to the research on the importance of cybernetics in Latin America. (shrink)

El paper realiza una exposición sobre el concepto y contenido de la nulidad y el restablecimiento del derecho como medio de control a la luz de la Ley 1437 de 2011; enfocándola en asuntos ambientales a través del estudio de la licencia ambiental.

On page 1 of his classic text, Millsap states, “Measurement invariance is built on the notion that a measuring device should function the same way across varied conditions, so long as those varied conditions are irrelevant [emphasis added] to the attribute being measured.” By construction, measurement invariance techniques require not only detecting varied conditions but also ruling out that these conditions inform our understanding of measured domains. In fact, measurement invariance techniques possess great utility when theory and research inform their (...) application to specific, varied conditions that, if not detected, introduce measurement biases, and, thus, depress measurement validity. Yet, we see emerging bodies of work where scholars have “put the cart before the horse” when it comes to measurement invariance, and they apply these techniques to varied conditions that, in fact, may reflect domain-relevant information. These bodies of work highlight a larger problem in measurement that likely cuts across many areas of scholarship. In one such area, youth mental health, researchers commonly encounter a set of conditions that nullify the use of measurement invariance, namely discrepancies between survey reports completed by multiple informants, such as parents, teachers, and youth themselves. In this paper, we provide an overview of conceptual, methodological, and measurement factors that should prevent researchers from applying measurement invariance techniques to detect informant discrepancies. Along the way, we cite evidence from the last 15 years indicating that informant discrepancies reflect domain-relevant information. We also apply this evidence to recent uses of measurement invariance techniques in youth mental health. Based on prior evidence, we highlight the implications of applying these techniques to multi-informant data, when the informant discrepancies observed within these data might reflect domain-relevant information. We close by calling for a moratorium on applying measurement invariance techniques to detect informant discrepancies in youth mental health assessments. In doing so, we describe how the state of the science would need to fundamentally “flip” to justify applying these techniques to detect informant discrepancies in this area of work. (shrink)

Plagiarism is a serious, yet widespread type of research misconduct, and is often neglected in developing countries. Despite its far-reaching implications, plagiarism is poorly acknowledged and discussed in the academic setting, and insufficient evidence exists in Latin America and developing countries to inform the development of preventive strategies. In this context, we present a longitudinal case study of seven instances of plagiarism and cheating arising in four consecutive classes of an Epidemiology Masters program in Lima, Peru, and describes the implementation (...) and outcomes of a multifaceted, “zero-tolerance” policy aimed at introducing research integrity. Two cases involved cheating in graded assignments, and five cases correspond to plagiarism in the thesis protocol. Cases revealed poor awareness of high tolerance to plagiarism, poor academic performance, and widespread writing deficiencies, compensated with patchwriting and copy-pasting. Depending on the events’ severity, penalties included course failure and separation from the program. Students at fault did not engage in further plagiarism. Between 2011 and 2013, the Masters program sequentially introduced a preventive policy consisting of: intensified research integrity and scientific writing education, a stepwise, cumulative writing process; honor codes; active search for plagiarism in all academic products; and a “zero-tolerance” policy in response to documented cases. No cases were detected in 2014. In conclusion, plagiarism seems to be widespread in resource-limited settings and a greater response with educational and zero-tolerance components is needed to prevent it. (shrink)

Although the evidence remains tentative at best, the conception of hallucinations in schizophrenia as being underconstrained perception resulting from intrinsic thalamocortical resonance in sensory areas might complement current models of hallucination. However, in itself, the approach falls short of comprehensively explaining the neurogenesis of hallucinations in schizophrenia, as it neglects the role of external attributional biases, mental imagery, and a disconnection between frontal and temporal areas.

El presente trabajo se propone brindar un curso lineal a la comprensión filosófico-política de Peter Sloterdijk. El hilo conductor nos lo brinda el concepto de “psicopolitica” para mostrar el actuar sloterdjkiano respecto de los diagnósticos de época. Intentamos de esta manera mostrar elementos comunes en la filosofía del autor y su programa psicopolítico. Finalizamos con una breve lectura de la situación actual de su pensamiento, y sus aparentes contradicciones, las que pretenden ser esclarecidas con sus obras más tempranas.

This book collects texts from three specialists in ancient philosophy which deal with the question of perceptive and intellective knowledge in antiquity. They try to present, in their different analyzes, the complex interrelationship among perception and thought in ancient authors, like Heraclitus, Parmenides, Democritus, Plato and Aristotle. The purpose of the texts is to expose the visible field - the perceptual knowledge domain - interacts with the invisible - the domain of reason and thought. In other words, that among them (...) there is no a radical separation of these two areas, although they are clearly distinct. (shrink)

This paper is part of a series in which we had worked in the last 6 months, and, specifically, intend to investigate the notion of timbre through the ecological perspective proposed by James Gibson in his Theory of Direct Perception. First of all, we discussed the traditional approach to timbre, mainly as developed in acoustics and psychoacoustics. Later, we proposed a new conception of timbre that was born in concepts of ecological approach. The ecological approach to perception proposed by Gibson (...) (1966, 1979) presupposes a level of analysis of perceptual stimulated that includes, but is quite broader than the usual physical aspect. Gibson suggests as focus the relationship between the perceiver and his environment. At the core of this approach, is the notion of affordances, invariant combinations of properties at the ecological level, taken with reference to the anatomy and action systems of species or individual, and also with reference to its biological and social needs. Objects and events are understood as relates to a perceiving organism by the meaning of structured information, thus affording possibilities of action by the organism. Event perception aims at identifying properties of events to specify changes of the environment that are relevant to the organism. The perception of form is understood as a special instance of event perception, which is the identity of an object depends on the nature of the events in which is involved and what remains invariant over time. From this perspective, perception is not in any sense created by the brain, but is a part of the world where information can be found. Consequently, an ecological approach represents a form of direct realism that opposes the indirect realist based on predominant approaches to perception borrowed from psychoacoustics and computational approach. (shrink)

Workplace bullying is a phenomenon that can have serious detrimental effects on health, work-related attitudes, and the behavior of the target. Particularly, workplace bullying exposure has been linked to lower level of general well-being, job satisfaction, vigor, and performance and higher level of burnout, workplace deviance, and turnover intentions. However, the psychological mechanisms behind these relations are still not well-understood. Drawing on psychological contract and self-determination theory (SDT), we hypothesized that perceptions of contract violation and the frustration of basic needs (...) mediate the relationship between workplace bullying exposure and well-being, attitudinal, and behavioral outcomes. Self-reported data were collected among employees with different working backgrounds (N= 1,257)viaAmazon's Mechanical Turk in an online survey. Results showed that feelings of contract violation and frustration of basic needs accounted for unique variation in well-being, work satisfaction, burnout, vigor, and turnover intentions, pointing to individual contributions of both psychological mechanisms. However, when controlled for frustration of basic needs, feelings of psychological contract violation were no longer a mediator between workplace bullying exposure and work performance. Helping employees to deal effectively with workplace bullying exposure might buffer its negative effects and reduce their experienced frustration of basic needs, preserving their well-being, vigor, and work performance and, eventually, prevent burnout. The present study is the first to concurrently elucidate the proposed psychological mechanisms and unique contributions of psychological contract violation and frustration of basic needs in the context of workplace bullying. (shrink)

By a result of L.D. Beklemishev, the hierarchy of nested applications of the $$\Sigma _1$$ -collection rule over any $$\Pi _2$$ -axiomatizable base theory extending Elementary Arithmetic collapses to its first level. We prove that this result cannot in general be extended to base theories of arbitrary quantifier complexity. In fact, given any recursively enumerable set of true $$\Pi _2$$ -sentences, S, we construct a sound $$(\Sigma _2 \! \vee \! \Pi _2)$$ -axiomatized theory T extending S such that the (...) hierarchy of nested applications of the $$\Sigma _1$$ -collection rule over T is proper. Our construction uses some results on subrecursive degree theory obtained by L. Kristiansen. (shrink)

Music can reduce stress and anxiety, enhance positive mood, and facilitate social bonding. However, little is known about the role of music and related personal or cultural variables in maintaining wellbeing during times of stress and social isolation as imposed by the COVID-19 crisis. In an online questionnaire, administered in 11 countries, participants rated the relevance of wellbeing goals during the pandemic, and the effectiveness of different activities in obtaining these goals. Music was found to be the most effective activity (...) for three out of five wellbeing goals: enjoyment, venting negative emotions, and self-connection. For diversion, music was equally good as entertainment, while it was second best to create a sense of togetherness, after socialization. This result was evident across different countries and gender, with minor effects of age on specific goals, and a clear effect of the importance of music in people's lives. Cultural effects were generally small and surfaced mainly in the use of music to obtain a sense of togetherness. Interestingly, culture moderated the use of negatively valenced and nostalgic music for those higher in distress. (shrink)

A well known theorem proved by J. Paris and H. Friedman states that BΣn +1 is a Πn +2-conservative extension of IΣn . In this paper, as a continuation of our previous work on collection schemes for Δn +1-formulas , we study a general version of this theorem and characterize theories T such that T + BΣn +1 is a Πn +2-conservative extension of T . We prove that this conservativeness property is equivalent to a model-theoretic property relating Πn-envelopes and (...) Πn-indicators for T . The analysis of Σn +1-collection we develop here is also applied to Σn +1-induction using Parsons' conservativeness theorem instead of Friedman-Paris' theorem.As a corollary, our work provides new model-theoretic proofs of two theorems of R. Kaye, J. Paris and C. Dimitracopoulos : BΣn +1 and IΣn +1 are Σn +3-conservative extensions of their parameter free versions, BΣ–n +1 and IΣ–n +1. (shrink)

By a theorem of R. Kaye, J. Paris and C. Dimitracopoulos, the class of the Πn+1-sentences true in the standard model is the only consistent Πn+1-theory which extends the scheme of induction for parameter free Πn+1-formulas. Motivated by this result, we present a systematic study of extensions of bounded quantifier complexity of fragments of first-order Peano Arithmetic. Here, we improve that result and show that this property describes a general phenomenon valid for parameter free schemes. As a consequence, we obtain (...) results on the quantifier complexity, finite axiomatizability and relative strength of schemes for Δn+1-formulas. (shrink)

En este capítulo se analiza la figura de la obtención vegetal: su alcance, dimensión, requisitos y caracterización frente a otros derechos de propiedad intelectual, para así abordar su ámbito de protección y su tratamiento en el ámbito internacional. Se pretende en este sentido plantear que la tendencia regulatoria en materia de obtenciones vegetales en Colombia no sólo va en contravía de los intereses de los pueblos indígenas, sino además de su patrimonio colectivo que les ha garantizado una gran diversidad que (...) hoy por hoy es sustento de su alimentación. Con lo anterior se lleva a cabo un singular esfuerzo para tratar de forma comprensiva este asunto, buscando la primacía del consentimiento libre, previo e informado de las comunidades potencialmente afectadas. (shrink)

Previous research has underlined the significance of practical wisdom pertaining to corporate sustainability. Recent studies, however, have identified managing opposing but interlocked tensions related to environmental, social, and economic aspects as one of the most crucial future challenges in CS. Therefore, we apply the established link between wisdom and sustainability to the pressing topic of managing tensions in CS. We commence with a literature overview of tensions in sustainability management, which manifests our basic work assumption concerning the need for practical (...) wisdom in CS. We then discuss the threefold, mutual interconnectedness between practical wisdom and tension management in CS, which we illustrate in a conceptual model. Thereafter, we develop a set of propositions on how a practical wisdom approach influences CS in practice and how it differs from a business-case approach. In recognition of the conceptual character of our paper, we conclude by outlining potential practical applications and theoretical implications of the model and of the propositions. Limitations and avenues for further research are discussed. (shrink)

Las Tecnologías de la Información y la Comunicación (TIC) han ganado gran relevancia derivado de la situación de salud producida por el Covid-19, por lo que se plantean nuevas dinámicas en la formación docente. El estudio es de corte cualitativo descriptivo y se utilizó el estudio de casos, el análisis de contenido y del discurso. Los docentes exponen la adaptación del diseño tecnopedagógico, motivándolos al autoaprendizaje proactivo de sus estudiantes. El sentido pedagógico del uso de TIC propició un escenario de (...) aprendizaje para favorecer el enriquecimiento de las prácticas de los docentes, donde se logra la democratización del conocimiento. (shrink)