In order to understand the rise of runaway solutions in the radiation reaction problem a mechanical model is used. An alternative demonstration of Daboul’s theorem, through Hurwitz’s criterion, is given. The origin of runaway solutions in electrodynamics is discussed. They arise when the particle has a negative mechanical mass or when approximations are used in the equation of motion. In the 1-dimensional mechanical model an exact and linear equation of motion for the particle is obtained, the corresponding exact solution is (...) again runaway when the mechanical mass is negative. The exact solution is not runaway when the mechanical mass is positive. However, the use of approximations leads to an equation of motion which has runaway solutions. It is exhibited that the use of approximations in the 3-dimensional mechanical model is completely necessary because the general equation of motion for the particle is non-linear. The analysis of this case proceeds in a very similar way to the one carried out in electrodynamics. This means that the number of dimensions also plays an important role in the analysis. (shrink)

The history of organizations and collectives is something alive. It is a network of memories, actions, collaborations, dreams, encounters, and disconnections that live within each of its members. The EcoDialogue Center is an academic space of the University of Veracruz for promoting dialogue between disciplines. In this article we are presenting the stories, both personal and collective, and the values and ideals that create our Center. We are using this opportunity to reflect on the cultural, geographical, emotional, intellectual, and societal (...) conditions that have allowed this innovative process within the rules and customs of a university. (shrink)

Our EcoDialogue Center is an educational space for human sustainability within the University of Veracruz. We propose that creating sustainable knowledge requires re-thinking how we conceive ourselves as human beings. This requires paying attention to what we call “the quality of being,” which means caring about and attending to the physical–emotional–mental–spiritual as the foundation of education. This way we can create a space where we can dialogue contemplatively where all dimensions of our lives interact; the physical, the emotional, the communitarian, (...) the social politic, the planetarium, and the spiritual being act with social–environmental responsibility. (shrink)

O pensamento filosófico não é história das “idéias”. Em filosofia, não se trata de oferecer representações prontas , mas de forjar ferramentas para trabalhar e responder às dificuldades que se apresentam: nas ciências, na sociedade, na cultura . Isso porque uma filosofia é relativa a uma paisagem, no seio da qual ela toma posição, na qual ela se orienta, ou seja ela se esforça por tomar tal direção antes que outra, é isso que eu chamo “tendência”. Uma filosofia pode, então, (...) tomar uma tendência que parece oposta às idéias que ela propõe. Por exemplo, Berkeley sustenta idéias realistas e as inscreve em uma tendência espiritualista . Outro exemplo, Kant afirma a excelência da democracia , mas ele a inscreve em uma tendência aristocrática . O caso de Jean-Jacques Rousseau é exemplar: ele ataca os “materialistas” e os “ateus”, afirma a liberdade de espírito e a existência de Deus, mas seu espiritualismo se inscreve em uma lógica radicalmente materialista. É esta dificuldade que torna a leitura de sua obra complexa e o que explica que alguns o fazem um kantiano, outros um hegeliano, outros um hursseliano, etc. (shrink)

This paper aims to clarify the nature of understanding in medicine. The first part describes in more detail what it means to understand something and links a type of understanding (i.e., objectual understanding) to explanations. The second part proceeds to investigate what objectual understanding of a disease (i.e., biomedical understanding) requires by considering the case of scurvy from the history of medi- cine. The main hypothesis is that grasping a mechanistic explanation of a condi- tion is necessary for a biomedical (...) understanding of that condition. The third part of the paper argues that biomedical understanding is necessary, but not sufficient for understanding in a clinical context (i.e., clinical understanding). The hypothe- sis is that clinical understanding combines biomedical understanding of a disease or pathological condition with understanding illness, which involves some degree of personal understanding of the patient. It is argued that, in many cases, clinical understanding necessitates adopting a particular second-personal stance and using cognitive resources in addition to those involved in biomedical understanding. (shrink)

Este artículo de reflexión plantea la decisión implícita en el acto educativo y, sobre todo, evaluativo: ¿comprender o juzgar? Á partir de un hecho educativo cotidiano se plantea la alternativa filosófica e irresoluble entre el determinismo y la libertad, proponiendo un enfoque compatibilista que significa que pese a que la acción humana individual hace parte de cadenas causales, somos libres de quebrar o innovar en cualquiera de los eslabones de dichas cadenas, posibilitando así la responsabilidad moral y la ética, y (...) permitiendo un acto realmente formativo. Los aportes de Descartes y Kant, así como de Pestalozzi y Makarenko permitirán proponer la educación como anticipación en un contexto preciso. (shrink)

© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

Este artigo tece considerações sobre antinegritude e a distingue do racismo, expondo a falsa universalidade do Social e do Humano: o racismo ocorre no Social entre os Humanos, enquanto a antinegritude continuamente expulsa os negros e a negritude dessas categorias modernas fundamentais cujas definições derivam da expulsão violenta. Para delinear a discussão, o artigo analisa dois textos paradigmáticos que se esforçam para lidar intransigentemente com a antinegritude, mas através da linguagem do racismo: George Yancey, Who Is White? e "The Combahee (...) River Collective Statement." O artigo conclui sugerindo a necessidade de um salto de invenção fanoniano e uma abrangente abolição. (shrink)

A historiografia neo-republicana de Cambridge estabeleceu uma franca distinção entre republicanismo e liberalismo que merece ser reexaminada. Este artigo busca contribuir para esse debate, propondo um estudo de caso dos commonwealthmen ou republicanos que apoiaram a revolução de 1688 na Inglaterra, mas que se opuseram à nova cultura política e à nova “economia de crédito” do reino de Guilherme III na década de 1690. Ao desviarmos nosso olhar do republicanismo enquanto linguagem para situá-lo sob o republicanismo enquanto cultura, bem como (...) modo de ação política, é possível constatar uma porosidade entre direitos naturais e virtude cívica, mas também entre liberdade negativa e liberdade positiva. (shrink)

Good academic practice is more than the avoidance of clear-cut cheating. It also involves navigation of the gray zones between cheating and good practice. The existing literature has left students’ understanding of gray zone practices largely unexplored. To begin filling in this gap, we present results from a questionnaire study involving N = 1639 undergraduate students from seven European countries representing all major disciplines. We show that large numbers of these students are unable to identify gray area issues and lack (...) sensitivity to the context dependence of these. We also show that a considerable proportion of students have a poor understanding of concepts like plagiarism and falsification, not only in gray zone scenarios, but also in cases of relatively clear-cut cheating. Our results are similar across the faculties and countries of study, and even for students who have attended academic integrity training. We discuss the implications of this for academic integrity training. (shrink)

Body checking, characterized by the repeated visual or physical inspection of particular parts of one’s own body (e.g. thighs, waist, or upper arms) is one of the most prominent behaviors associated with eating disorders, particularly Anorexia Nervosa (AN). In this paper, we explore the explanatory potential of the Recalcitrant Fear Model of AN (RFM) in relation to body checking. We argue that RFM, when combined with certain plausible auxiliary hypotheses about the cognitive and epistemic roles of emotions, is able to (...) explain key characteristics of body checking, including how body checking behavior becomes habitual and compulsive. (shrink)

En este artículo se propone, desde lo que Husserl concibió como Fenomenología Empírica, desarrollar — en el marco de la Inteligencia Artificial— una Epistemología Empírica. Para tal efecto se muestra cómo al ser traducida una estructura lógica la descripción fenomenológica de la 'esencia' de un dilema moral, es posible su representación en una plataforma computacional que use 'motor de inferencia'. Tal representación permitirá evidenciar cómo se hace uso, al solucionar los dilemas morales, de 'estructuras de autoengaño'. Con esto, la subjetividad (...) es llevada a los límites de lo que es representable y gracias a ello, se conquista para la reflexión la esencia de la subjetividad. (shrink)

El presente artículo consta de tres partes. La primera consiste en analizar el concepto de justicia dentro del pensamiento de David Hume en las obras Tratado de la naturaleza humana e Investigación sobre los principios de la moral. La segunda aplica el el proceso anterior pero a las obras de Jean Rousseau Contrato Social y Discurso sobre el origen de la desigualdad entre los hombres. La tercera establece que las concepciones sobre la justicia, tanto las del escocés como las del (...) ginebrino, poseen contextos y sentidos distintos pero que, en realidad, son posturas que tienen algunas similitudes en lo que respecta al fundamento de la propiedad. (shrink)

Aristotle examines the role of leisure in the optimal life of the citizen. In the quest for the most desirable life understood as the proper combination of political and contemplative elements Aristotle ascribes an important role to leisure. Varga explores the two books in terms of the notion of schole and shows the inadequacy of previous interpretations of Aristotle s proposed design for the commonwealth.".

En el presente texto analizaremos la categoría de pluralidad como componente indispensable para pensar en la construcción de una comunidad no totalitaria y como impedimento a ciertos modos contemporáneos de dejar fuera-de una comunidad a determinados grupos humanos. La cuestión de fondo, que no pretendemos resolver aquí, es la posibilidad de pensar un mundo en donde quepan muchos mundos. Propondremos la categoría de pluralidad para abordar esta cuestión tanto a partir del análisis realizado por Hannah Arendt, como por Jean-Luc Nancy. (...) En un primer momento nos detendremos en la figura de la exclusión del mundo a partir de las nociones de apátrida trabajada por Arendt, necropolítica por el filósofo camerunés Achille Mbembe y la idea de inmundicia elaborada por Nancy. Desde allí podremos tomar la perspectiva que buscamos para el análisis de la pluralidad, donde plantearemos, por una parte las infranqueables diferencias e incompatibilidades entre el análisis arendtiano y nancyano de la pluralidad como proponer algunas confluencias. Finalmente propondremos la exigencia de un momento de autoafirmación y vinculación de la pluralidad que es lo que hace que esta pueda constituir un mundo y muchos mundos a la vez, este momento es el nosotros, trabajado también por Arendt, Nancy y Roig. In the following text we will analyse the category of plurality as an essential element to think of the construction of a nontotalitarian community and as an impediment to particular contemporary modes of leaving certain specific human groups “out of” a community. The bottom line, which we do not intend to solve here, is the possibility to think a world in which many worlds fit. We will propose the category of plurality to approach this issue both from the analysis carried out by both Hannah Arendt and by Jean-Luc Nancy. At first we will consider the representation of exclusion from the world starting from the notions of stateless developed by Arendt, necropolitics by Cameroonian philosopher Achille Mbembe, and the idea of filth by Nancy. From there we can take the perspective that we seek for the analysis of plurality, posing on the one hand the insurmountable differences and incompatibilities between Arendt’s and Nancy’s analysis of plurality, and, on the other hand, some of their confluences. Finally, we will propose the necessity of a moment of self-assertion and connection of plurality that permits the constitution of this plurality as one and many worlds at the same time this moment is “us”, addressed also by Arendt, Nancy and Roig. (shrink)

A large part of the contemporary literature on dehumanization is committed to three ideas: (a) dehumanization involves some degree of denial of humanness, (b) such denial is to be comprehended in mental terms, and (c) whatever exact mechanisms underlie the denial of humanness, they belong in the realm of post-perceptual processing. This chapter examines (c) and argues that the awareness of minds might belong to perceptual processing. This paves the way for the possibility that dehumanization might, at least in part, (...) be a perceptual phenomenon, such that dehumanizers visually perceive the dehumanized as exhibiting lesser-than-human minds. It is perhaps unsurprising that the first systematic investigations of dehumanization approached the phenomenon as linked to contexts of war, genocide, extreme hatred, and violence. One guiding hypothesis was that dehumanizers exclude the dehumanized from a moral community of human beings, implicitly conceptualized as displaying distinct individualities and being embedded in caring interpersonal relations. By comprehending the dehumanized as deindividuated entities to which moral norms and considerations of fairness do not apply (Opotow 1990), dehumanizers are able to disengage from moral restrictions and self-sanctions (Bandura 1999). (shrink)

O cinema, na mesma maneira da televisão, da prensa, e outros meios de comunicação, contribui na construção de imaginários sociais e culturais, como mostrou claramente o Bourdieu em Langage et pouvoir simbolique e o Chomsky em A Fabricação do Consenso. Contudo, o cinema a retratar fenômenos sociais, não somente constrói imaginários sino também constrói a criação de arquivos fílmicos e com eles permite construir e reconstruir uma parte da história. Essa é nossa posição, adoptando os postulados do Ferro, do Kracauer (...) e do Billard. Através a prisma da filosofia da história, o artigo pretende analisar em quê medida o cinema centro-americano contemporâneo pode ser considerado como uma forma de construção e reconstrução da memória e a história das migrações centro-americanas nas primeiras duas décadas do século XXI? (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)

El artículo examina, críticamente, la solución que propone Ronald Dworkin para el problema de si los ideales políticos de libertad e igualdad entran en conflicto. El núcleo de mi crítica es que la solución de Dworkin depende de un supuesto dudoso, a saber: que no puede haber casos de colisión entre dos obligaciones de igual importancia. Siguiendo una idea de Ruth Marcus, afirmo, finalmente, que la existencia de dilemas valorativos genuinos no implica, como pretende Dworkin, tener que reconocer que el (...) sistema de principios del agente es internamente inconsistente, ya que esta clase de problema surge más bien de factores circunstanciales. (shrink)

Depois da sua passagem para a fé católica, Edith Stein reformulou suas concepções filosóficas apropriando-se do conceitual tomasiano. Neste artigo, abordaremos como ela abordou as questões acerca da eternidade do ser e da criação dos entes, comparando com a concepção original de Tomás de Aquino e mostrando como esse diálogo entre os pensamentos medievais e contemporâneos foi desenvolvido de uma maneira original na obra “Ser finito e ser eterno: Ensaio de uma ascensão ao sentido do ser”.

A pesar de los reparos de algunos especialistas, Avicena es un punto de referencia insoslayable en la historia de la intencionalidad. Este trabajo se propone determinar la manera en que el intelecto toma posición con respecto a la realidad de los objetos con los que se relaciona. Abordamos la relación intencional centrando nuestra atención en el nexo entre lógica y ontología y enfatizando el papel que juegan la conceptualización y la estimación en la determinación de lo que es real y (...) existente efectivamente. La exploración de la estructura intencional nos lleva a identificar la relevancia de la doctrina de las esencias como presupuesto fundamental para la conceptualización y la verdad. La importancia de la teoría de la intencionalidad de Avicena radica en la descripción tanto de la referencia al objeto de conocimiento, como un proceso que avanza de lo conocido a lo desconocido, cuyas diversas fases conforman el itinerario de las esencias. Desde este punto de vista, la realidad y la existencia son accidentes que le acaecen a las esencias. Las capacidades del alma que hacen posible la referencia intencional son la estimativa, la conceptualización y el asentimiento. Asimismo, identificamos algunos puntos de convergencia entre las doctrinas de las esencias de Avicena y de Husserl. (shrink)

Classical texts of continental legal theorising in Hungarian translation: RUDOLF VON JHERING: Kampf ums Recht [1872] / EUGEN EHRLICH: Freie Rechtsfindung und freie Rechtswissenschaft [1903] / HERMANN KANTOROWICZ: Der Kampf um die Rechtswissenschaft [1906] / RUDOLF STAMMLER: Richtiges Recht [1908] & excerpts from his Theorie der Rechtswissenschaft [1911/1923] & Richtiges Recht [1921] / FRANÇOIS GÉNY: Science et technique en droit privé positif [1924: excerpts] / GUSTAV RADBRUCH: Rechtsphilosophie [1932: excerpts] / HANS KELSEN ‘The Pure Theory of Law and Analytical Jurisprudence’ (...) [1941] & ‘The Law as a Specific Social Technique’ [1941] & ‘Value Judgments in the Science of Law’ [1942] / GUSTAV RADBRUCH ‘Gesetzliches Unrecht und übergesetzliches Recht’ [1946] / ALEXANDRE PASSERIN D’ENTRÈVES ‘Le droit naturel’ [1959] / HANS KELSEN ‘What is Justice?’ [1960] & ‘Positivisme juridique et doctrine du droit naturel’ [1963]. (shrink)

ABSTRACT Based on the exchange of documents and correspondence between the Corsican captain Matteo Buttafoco and Rousseau, which will culminate with a government plan for Corsica written by the philosopher, this paper aims to analyze a little explored dimension in Rousseau’s thought: the relation of convenience that the Constitutional Project for Corsica establishes between the economic systems and the forms of government, especially democracy. To this end, we will also combine an analysis between the text of the Project and some (...) excerpts from the manuscripts and workbooks, in order to see how the characteristic elements of modern political economy – such as the issues concerning population demography, territory, agriculture, labour, among others – are brought into play by Rousseau to formulate the idea of an économie bien entendue de la puissance civile. Reading critically the arguments of Buttafoco, founded on a praise to commerce and that had as inspiration the notion of “république commerçante” advocated by Montesquieu in The Spirit of Laws, Rousseau suggests thinking the diversity and cohabitation of diverse economic systems, always in relation to governments and peculiarities of a particular people, that is, each system can be more or less convenient to a given historical, political and social context. (shrink)

Recently, the pandemic context in which the world finds itself has inspired studies that sought to evaluate to mental health and the way people are relating to the purpose of understanding and promoting improvements psychological health. The epidemiological and public health literature shows that social connection protects and promotes mental health, being an important clinical tool for reducing anxiety, depression, and stress. Thinking in the broad sense of connection, that is, feeling and perceiving oneself connected with the environment, applied to (...) the context of sport, it is suggested that social connection could be related to the interactions in the practice of sport. Although playing sports can promote mental health, there are few findings on the topic in the context of a pandemic and with physical sports and electronic sports players. In this sense, the present study aims to assess the extent to which social connection and mental health indicators are correlated in a sample of sports and e-sports players. The participants were 401 Brazilian physical sports and e-sports players, mostly male and single, who filled in the Social Connectedness Scale, the Depression, Anxiety and Stress Scale, and demographic questions. The results indicated that social connection was negatively correlated and also predict the anxiety, depression, and stress. When comparing sports and e-sports players, a statistically significant difference was identified in the levels of social connection [t = −3.41; sportsmean = 4.53 ; e-sportsmean = 4.14 ] and depression [t = 2.90; sportsmean = 1.10 ; e-sportsmean = 0.85 ]. These findings can serve as a theoretical basis for the development of intervention programs and promoting discussions that focus on the analysis of aspects promoting psychological health in sports context. (shrink)

Many prominent theories of moral responsibility rely on the notion of “tracing,” the idea that responsibility for an outcome can be located in (i.e., “traced back to”) some prior moment of control, perhaps significantly antecedent to the proximate sources of a considered action. In this article, I show how there is a problem for theories that rely on tracing. The problem is connected to the knowledge condition on moral responsibility. Many prima facie good candidate cases for tracing analyses appear to (...) violate the knowledge condition on moral responsibility. So, either we need to dispense with tracing approaches or we must refine our understanding of the knowledge condition or we are responsible less frequently than we suppose. (shrink)

A partir de um exame de textos escritos por Du Pont de Nemours, Le Mercier de la Rivière, Victor Riquetti de Mirabeau e François Quesnay, e tendo em vista a unidade da teoria política formada e desenvolvida pela fisiocracia, buscaremos examinar como a análise econômica dessa doutrina encontra suas condições de emergência a partir de uma elaboração política que lhe é precedente: o jusnaturalismo. Assim, destacaremos a importância desse retorno filosófico para a compreensão de conceitos como produto líquido ou mesmo (...) para a ênfase dada à agricultura. Essa abordagem nos permitirá melhor avaliarmos de que forma o estudo das riquezas não se emancipa de uma teoria social e política que viceja, no final das contas, no tradicional terreno do direito natural. (shrink)

This paper aims to clarify the nature of understanding in medicine. The first part describes in more detail what it means to understand something and links a type of understanding (i.e., objectual understanding) to explanations. The second part proceeds to investigate what objectual understanding of a disease (i.e., biomedical understanding) requires by considering the case of scurvy from the history of medicine. The main hypothesis is that grasping a mechanistic explanation of a condition is necessary for a biomedical understanding of (...) that condition. The third part of the paper argues that biomedical understanding is necessary, but not sufficient for understanding in a clinical context (i.e., clinical understanding). The hypothesis is that clinical understanding combines biomedical understanding of a _disease_ or pathological condition with understanding _illness,_ which involves some degree of personal understanding of the patient. It is argued that, in many cases, clinical understanding necessitates adopting a particular second-personal stance and using cognitive resources _in addition_ to those involved in biomedical understanding. (shrink)