Objective: The aim of this research was to study the mediation of body dissatisfaction, physical self-concept, and body mass index (BMI) on the relationship between physical activity and self-concept in adolescents. Materials and Methods: A sample of 652 Spanish students between 12 and 17 years participated in a cross-sectional study. Physical self-concept and general self-concept were assessed with the Physical Self-Concept Questionnaire (CAF), body dissatisfaction with the Body Shape Questionnaire (BSQ), and physical activity was estimated with the International Physical Activity (...) Questionnaire (IPAQ-SF). BMI was utilized as a measurement of body composition. Structural equation modeling was used to assess the results. Results: The resulting models showed good fit indexes. Physical activity had a positive and indirect effect on self-concept (β = 0.29, p < 0.01) and direct effects on dissatisfaction (β = -0.26, p < 0.01) and physical self-concept (β = 0.20, p < 0.01). BMI had a direct effect on dissatisfaction (β = 0.31, p < 0.01) and on physical self-concept (β = -0.10, p < 0.01) and an indirect effect on general self-concept (β = -0.24, p < 0.01). However, it was only associated with physical activity in males, playing a mediating role between physical activity and body dissatisfaction. Conclusion: Physical activity can help individuals to achieve a positive self-concept and promote psychological well-being in adolescents through the improvement of physical perceptions and body satisfaction. The importance of BMI, body dissatisfaction, and physical self-concept on the configuration of the self-concept are also emphasized. Educational policymakers and Physical Education teachers should implement strategies to promote physical activity in the schools and provide a Quality Physical Education programs to increase physical activity during adolescence. (shrink)

La siguiente reseña explora el libro más reciente del historiador Tomás Pérez Vejo, el cual se adentra en un relato de nación construido a partir de los acervos pictóricos. El imaginario visual que se construye desde las exposiciones y críticas de pintura marca un ciclo crístico de nacimientos, tormentos, liberaciones y resurrecciones, cuyo interés primordial es su poderosa impronta en la historia oficial nacional y en cómo esta permea aún el presente.

Nos proponemos analizar el pensamiento de Álvaro García Linera, uno de los intelectuales más interesantes en lengua española, y que mayor difusión está teniendo en los últimos tiempos. Para ello, tomaremos como punto de referencia cuatro de las ideas centrales dentro de la filosofía del boliviano: proyecto político, estado, hegemonía y dominación (analizando las dos últimas de manera conjunta). Comenzaremos exponiendo las influencias de García Linera, así como las peculiaridades de sus planteamientos, para centrarnos posteriormente en la etapa de su (...) producción intelectual más reciente, y acabar con una conclusión que mencionará también algunas de las críticas más importantes que se han vertido hacia el antiguo vicepresidente. (shrink)

Since Darwin, Biology has been framed on the idea of evolution by natural selection, which has profoundly influenced the scientific and philosophical comprehension of biological phenomena and of our place in Nature. This book argues that contemporary biology should progress towards and revolve around an even more fundamental idea, that of autonomy. Biological autonomy describes living organisms as organised systems, which are able to self-produce and self-maintain as integrated entities, to establish their own goals and norms, and to promote the (...) conditions of their existence through their interactions with the environment. Topics covered in this book include organisation and biological emergence, organisms, agency, levels of autonomy, cognition, and a look at the historical dimension of autonomy. The current development of scientific investigations on autonomous organisation calls for a theoretical and philosophical analysis. This can contribute to the elaboration of an original understanding of life - including human life - on Earth, opening new perspectives and enabling fecund interactions with other existing theories and approaches. This book takes up the challenge. (shrink)

Henley argued that for Kuhn psychology is a nonparadigmatic science and that Skinner rejects the formulation of theories in psychology The present article shows that in a Kuhnian use of the concept of “paradigm” psychology is a paradigmatic science. This paper also demonstrates that Skinner himself formulated a theory of behavior as an alternative to traditional theoretical approaches in psychology. 2012 APA, all rights reserved).

This article examines the relation between the dialectical program established in Plato’s Republic and the practice of dialectic in other dialogues, such as the Parmenides and the Theaetetus. The author argues against those scholars who have sustained a sharp distinction between an intuitive conception of knowledge and the discursive practices characteristic of Plato’s concept of dialectic. In his view, Plato has been overinterpreted from the modern perspective of the distinction between intuitive and discursive forms of knowledge. As a consequence, this (...) article also examines the relation between the dialectical practices displayed in the Parmenides and the Theaetetus and the anhypothetical condition that Plato attributes to “the principle of everything” in the Republic. (shrink)

Automatic public malware analysis services provide controlled, isolated and virtual environments to analyse malicious software samples. Unfortunately, malware is currently incorporating techniques to recognize execution onto a virtual or sandbox environment; when an analysis environment is detected, malware behaves as a benign application or even shows no activity. In this work, we present an empirical study and characterization of automatic PMAS, considering 26 different services. We also show a set of features that allow to easily fingerprint these services as analysis (...) environments; the lower the unlikeability of these features, the easier for us to fingerprint the analysis service they belong to. Finally, we propose a method for these analysis services to counter or at least mitigate our proposal. (shrink)

The aim of this article is to present the origins of the marxian criticism of politics. Finding its place between the years of 1842 and 1843, this criticism emerges from within a review of the hegelian philosophy and takes is first form as a philosophical criticism of politics. The criticism of politics developed by Marx was, thus, rigorously a philosophical undertaking, yet of a philosophy that took the world as its object and flowed outwardly, manifesting itself externally as a criticism (...) of the society of that time and a negation of the existing politics.O objetivo deste artigo é apresentar as origens da crítica marxiana da política. Encontrando seu lugar entre os anos de 1842 e 1843 essa crítica nasce no interior de uma revisão da filosofia hegeliana e assume uma primeira forma como crítica filosófica da política. A crítica da política desenvolvida por Marx era, assim, rigorosamente, um empreendimento filosófico, mas de uma filosofia que assumia o mundo como seu objeto e se vertia para fora de si própria manifestando-se externamente como uma crítica da sociedade da época e como uma negação da política existente. (shrink)

Firstly we consider the new results about enzymatic capabilities in the RNA. In this framework we analyse the sequence-folding duality as a precursor of the genotype/phenotype duality. We discuss then which are the evolutive potentialities and limitations for a system with the absence and the presence of a nucleic acid to proteins translator code. We study the arise of the code in the living systems as a form of deep interlooking between the logic of the machinery and its hardware, discussing (...) some problems that abstract modelization of this process implies. Finaly we propose to redefine the informational vocabulary usually employed in Molecular Biology. (shrink)

Este trabajo tiene por objetivo ofrecer un análisis del argumento técnico que habitualmente se esgrime para defender el sistema de capitalización individual chileno. Se mostrará que, tras la discursividad técnica, permanecen ocultos dos asuntos íntimamente conectados que buscaremos develar: la existencia de supuestos altamente idealizados y la relación entre financiarización de la economía, privatización de la seguridad social y precarización del mercado laboral. Se argumentará que ambos aspectos dificultan la aceptación del razonamiento y se mostrará la relevancia de transparentar aquello (...) que subyace a la técnica económica. (shrink)

La instalación El archivo de los abuelos, 1995, es el resultado de un proyecto de investigación que el artista Christian Boltanski realizó junto con los estudiantes de la Universidad de Leuphana, Luneburgo (Alemania) en la misma institución. El archivo reúne efectos personales de los abuelos de los estudiantes de aquella generación. Se trata de una pieza significativa dentro de la obra del francés porque no se atiene a las características habituales de sus obras de archivo, a las que denomino «meta-archivos» (...) por su carácter posmoderno de desestabilización del concepto mismo de archivo, y consecuentemente, del de documento y del de historia. El proyecto hizo patente el silencio sobre el Tercer Reich imperante en la época dentro de las familias, e hizo que este pasado reprimido resurgiese. Asimismo, puso de manifiesto los orígenes nazis del campus universitario. Por estos motivos, pese a poder considerarse un «meta-archivo fallido», es una obra de arte relevante y pertinente a nivel socio-cultural, y dentro de la obra de Boltanski, al arrojar luz sobre sus tácitos modus operandi y objetivos habituales precisamente por no cumplirlos. (shrink)

La actual pandemia de SARS-CoV-2 pone de relieve una vez más el modelo fallido con el nos enfrentamos a las crisis que afectan a nuestro mundo, desde el cambio climático y las recientes situaciones de emergencia de los refugiados, hasta la ascensión de los extremismos políticos en las sociedades occidentales. Como argumentan la filósofa feminista Donna Haraway y el sociólogo y filósofo Bruno Latour, se hace necesario un cambio de paradigma y una redefinición de la subjetividad para enfrentarnos al Antropoceno. (...) La Bienal de Venecia 2019, “May You Live in Interesting Times”, comisariada por Ralph Rugoff, propuso un modelo experimental de pensamiento artístico (que denominaré “tentacular” haciendo uso de la teoría desarrollada por Haraway) que cuestionaba los paradigmas heredados de la Ilustración, y también, en cierto grado, de la postmodernidad. Por su calado filosófico, la muestra es comparable a “Les Immatériaux” (1985), la histórica exposición comisariada por el filósofo Jean-François Lyotard, quien asimismo conceptualizó la postmodernidad y la experiencia de lo “sublime postmoderno”, concepto que sirve para establecer un contraste con lo “sublime tentacular”, la experiencia contemporánea que aportó la reciente la bienal. (shrink)

Filologia e filosofia.--Pensar, falar, escrever.--Elementos de lógica aristotélica.

We present an approach to database update as a form of non monotonic temporal reasoning, the main idea of which is the (circumscriptive) minimization of changes with respect to a set of facts declared “persistent by default”. The focus of the paper is on the relation between this approach and the update semantics recently proposed by Katsuno and Mendelzon. Our contribution in this regard is twofold:We prove a representation theorem for KM semantics in terms of a restricted subfamily of the (...) operators defined by our construction.We show how the KM semantics can be generalized by relaxing our construction in a number of ways, each justified in certain intuitive circumstances and each corresponding to one specific postulate. It follows that there are reasonable update operators outside the KM family.Our approach is not dependent for its plausibility on this connection with KM semantics. Rather, it provides a relatively rich and flexible framework in which the frame and ramification problems can be solved in a systematic way by reasoning about default persistence of facts. (shrink)

Ethical veganism is the view that raising animals for food is an immoral practice that must be stopped because of the harm it causes to the animals, the environment, and our health. Carlo Alvaro argues the only way to stop that harm is to acquire the virtues that enable us to act justly and benevolently toward animals.

The project of growing meat artificially represents for some the next best thing to humanity. If successful, it could be the solution to several problems, such as feeding a growing global population while reducing the environmental impact of raising animals for food and, of course, reducing the amount and degree of animal cruelty and suffering that is involved in animal farming. In this paper, I argue that the issue of the morality of such a project has been framed only in (...) terms of the best consequences for the environment, animals, and humans, or in terms of deontic principles. I argue that to appreciate how deep and difficult this issue is, it is necessary to consider it in terms of a virtue-oriented approach. Such an approach will reveal aspects that are not apparent, not contemplated by typical approaches, but are essential to our understanding of the morality of lab-grown meat. As I argue, evaluating the issue from a virtue-oriented perspective suggests that the project of in vitro meat should not be supported because it stems from unvirtuous motivations. (shrink)

Marcus William Hunt argues that when co-parents disagree over whether to raise their child (or children) as a vegan, they should reach a compromise as a gift given by one parent to the other out of respect for his or her authority. Josh Millburn contends that Hunt’s proposal of parental compromise over veganism is unacceptable on the ground that it overlooks respect for animal rights, which bars compromising. However, he contemplates the possibility of parental compromise over ‘unusual eating,’ of animal-based (...) foods obtained without the violation of animal rights. I argue for zero parental compromise, rejecting a rights-oriented approach, and propose a policy that an ethical vegan parent and a non-vegan co-parent should follow to determine how to raise their children. (shrink)

In our research group on the philosophy of biology (www.ehu.es/ias-research), we are developing an understanding of autonomy as the maintenance of an identity over time by means of interaction with...

Recent research in philosophy of science has shown that scientists rely on a plurality of strategies to develop successful explanations of different types of phenomena. In the case of biology, most of these strategies go far beyond the traditional and reductionistic models of scientific explanation that have proven so successful in the fundamental sciences. Concretely, in the last two decades, philosophers of science have discovered the existence of at least two different types of scientific explanation at work in the biological (...) sciences, namely: mechanistic and structural explanations. Despite the growing evidence about the radically different nature of these two types of explanation, no inquiry has been conducted to date to determine the ontological reasons that might underlie these differences, nor the way in which these types of explanations can be systematically related with each other. Here, we aim to cover this gap by connecting this plurality of research strategies with the existence of emergent levels of reality. We argue that the existence of these different—and apparently incompatible—explanatory strategies to account for biological phenomena derives from the existence of “ontological jumps” in nature, which generate different regimes of causation that in turn demand the development of different explanatory frameworks. We identify two of these strategies—mechanistic modelling and network modelling—and connect them to the existence of two ontological regimes of causation. Finally, we relate them with each other in a systematic way. In this vein, our paper provides an ontological justification for the plurality of explanatory strategies that we see in the life sciences. (shrink)

This article proposes a reading of digital citizenships as these are shifting from a historical and conceptual perspective. We developed the following steps to carry it out: first, a problematization of the concept of digital citizenship from a critical-historical reading, betting on a complex understanding of it that assumes interactions between public and private spheres; second, taking into account aspects of the technology’s philosophy, we analyze the relationship between young people and politics through Twitter, and finally, a proposal of prejudices (...) configuration and modelling that can occur in this new public-private sphere based on some aspects seen in the second round of the 2018 Colombian presidential campaign. One of the conclusions we reached is that Twitter is a sociotechnical network that generates a shifting form of connection between the private and public spheres, where young people have assemblage and can generate resistance to the modelling imposed by political campaigns. (shrink)

En su primer período friburgués y en su período marburgués Martin Heidegger desarrolla el método hermenéutico fenomenológico con motivo de aprehender el sentido original de la vida en su ser vivida. La indicación formal es el elemento de conceptualización que el autor articula en correspondencia a las particularidades del fenómeno-vida y a su aprehensión. El presente artículo tiene por objetivo la presentación clara y concreta de la idea y las diferentes tareas metódicas que pertenecen a este elemento.

En la República Platón parece romper con el intelectualismo socrático al aceptar deseos independientes del bien. Sin embargo, esto no le impide seguir afirmando que el alma hace todo lo que hace en virtud del bien. Para resolver esta aparente contradicción en el presente artículo se insiste en la distinción entre deseos y valores. Los deseos, generados en las partes del alma, están apegados a sus objetos propios, pero los valores revisten estos deseos de imágenes del bien y otros elementos (...) cognitivos que los convierten en móviles aceptables de la acción en la unidad del alma, por lo que hay que distinguir una volición independiente del bien en las partes del alma y una volición que actúa sub specie boni en el contexto de un alma unitaria que ha de decidir entre deseos opuestos entre sí. (shrink)

Dean MacCannell (Washington, 1940), catedrático emérito de paisajismo de la Universidad de California en Davis, es un autor de referencia internacional en antropología, sociología y ética del turismo, con obras fundamentales como _The Tourist: A New Theory of the Leisure Class _(1976), _Empty Meeting Grounds_ (1992) – ambas publicadas en España por la editorial Melusina- o _The Ethics of Sightseeing_ (2011). Considerando que uno de los principales atractivos de su obra es su capacidad para captar la relación entre el turismo (...) y las transformaciones culturales y socio-económicas de los últimos cincuenta años, quisimos dirigirle una serie de preguntas para profundizar sobre su obra y reflexionar sobre el turismo en el mundo post-pandemia de la Covid-19. (Traducción al español a cargo de Carmen González). (shrink)

El artículo amplía lo ya publicado en F. Bianchini - S. Romanello (ed.), Non mi vergogno del Vangelo, potenza di Dio. Studi in onore di Jean-Noël Aletti SJ, nel suo 70° compleanno (AnBib 200; Roma 2012). Examina la hipótesis de que el apóstol Pablo pudiera tener presente la posibilidad, y quizás la conveniencia, de que otras audiencias leyeran las cartas dirigidas a sus destinatarios primarios. A tal fin, se estudian indicios de la correspondencia paulina, estrategias retóricas, datos contextuales y testimonios (...) epistolares antiguos que hacen plausible la hipótesis. Finalmente, se reflexiona sobre el modo en que las segundas audiencias pudieron leer las cartas como «comunicación comunicada». (shrink)

Se presentan los resultados parciales de una investigación realizada entre los años 2010 Y 2011 cuya pretensión fue indagar la manera cómo van emergiendo en cuanto sujetos político, los jóvenes de una universidad pública. Para ello se desarrolló un diseño cualitativo constituido por ocho fases yvive..

La técnica forma parte de la naturaleza del ser humano. Pertenece a su esencia desde su transformación de homo naturalis a homo faber. Siguiendo a Ortega y Gasset (1939), el ser humano como ser natural es un animal biológicamente menesteroso y necesitado ante los retos y dificultades que le presenta la naturaleza. Su salvación –la superación de los obstáculos que lo hubieran conducido casi con toda probabilidad a su extinción como especie– ha radicado en el desarrollado de su capacidad técnica. (...) Mediante ella el ser humano ha podido construir sobre la naturaleza un medio artificial. Es a ese medio al que el ser humano se viene “ajustando” desde su principio como tal ser humano. En ese proceso ha invertido el proceso de adaptación a la naturaleza común y corriente entre el resto de los seres vivos. El ser humano no se adapta a la naturaleza, sino que la naturaleza –filtrándose a través del medio artificial que dicho ser construye sobre ella– se adapta al ser humano. En resumen, la técnica le permite al ser humano construir un medio artificial –una supranaturaleza–. Es a ese medio al que se adapta, venciendo de este modo su estado de precariedad y superando así las limitaciones que le vienen impuestas por los dictados de la naturaleza a la hora de satisfacer sus necesidades. Sin técnica, en definitiva, no habría ser humano. Si esto es así, ¿debemos sujetar la técnica a control o debe ser autónoma? Técnicamente, todo cuanto pueda hacerse, ¿debe hacerse? No perdamos de vista a la hora de responder a estas cuestiones que, en la actualidad, las nuevas tecnologías están posibilitando alcanzar metas hasta hace poco tiempo impensables, ¿las limitamos? Y, si lo hacemos, ¿cuáles son los límites? (shrink)