In many vertebrates, the enzymatic oxidation of dietary yellow carotenoids generates red keto‐carotenoids giving color to ornaments. The oxidase CYP2J19 is here a key effector. Its purported intracellular location suggests a shared biochemical pathway between trait expression and cell functioning. This might guarantee the reliability of red colorations as individual quality signals independent of production costs. We hypothesize that the ornament type (feathers vs. bare parts) and production costs (probably CYP2J19 activity compromising vital functions) could have promoted tissue‐specific gene relocation. (...) We review current avian tissue‐specific CYP2J19 expression data. Among the ten red‐billed species showing CYP2J19 bill expression, only one showed strong hepatic expression. Moreover, a phylogenetically‐controlled analysis of 25 red‐colored species shows that those producing red bare parts are less likely to have strong hepatic CYP2J19 expression than species with only red plumages. Thus, both production costs and shared pathways might have contributed to the evolution of red signals. (shrink)

August Weismann proposed that genetic changes in somatic cells cannot pass to germ cells and hence to next generations. Nevertheless, evidence is accumulating that some environmental effects can promote heritable changes in the DNA of germ cells, which implies that some somatic influence on germ line is possible. This influence is mostly detrimental and related to the presence of oxidative stress, which induces mutations and epigenetic changes. This effect should be stronger in males due to the particular characteristics of sperm. (...) Here, we propose the hypothesis that females are able to avoid males with oxidatively damaged DNA in the germ line by using oxidative‐dependent (pre‐ and post‐mating) signals. This new hypothesis may shed light on unsolved questions in evolutionary biology, such as the benefits of polyandry, the lek paradox, or the role of sexual selection on the evolution of aging. BioEssays 30:1212–1219, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

The article analyses how teachers perceive parental school involvement and compares said perceptions with the involvement declared by parents. In-depth interviews were conducted to parents of middle-school students during two moments of their children’s educational career and ethnographic observation was performed in their children’s schools. Results show that, in most cases, teachers’ perceptions do not match what is exposed by the families. Faculty overestimate the family support received by high achieving students, and underestimate the support received by low achievers. Children’s (...) strategies and attitudes play a key role in order to explain these perceptions. (shrink)

Después de la publicación de su tesis doctoral titulada La acción (1893), el filósofo francés Maurice Blondel escribió algunas obras en las que trató asuntos de enorme importancia, tanto en el campo filosófico como teológico, que desarrollaron las temáticas centrales de La acción, obra que a finales del siglo XIX generó tanto revuelo en el ambiente filosófico francés. Con la conciencia de su actualidad y su inmenso valor para una perspectiva novedosa de la metafísica y el diálogo fe-razón, se pretende (...) aquí una aproximación a cuatro obras que los estudiosos del pensamiento blondeliano han llamado “menores”. El presente artículo desarrolla los principales aportes de dichas obras a la reflexión filosófica contemporánea, indagando al mismo tiempo por la filosofía de la acción en cada una de ellas. Después de una corta biografía del pensador en cuestión, se abordará el significado de la filosofía de la acción con vistas a su elucidación para el lector. Posteriormente se presentará el contexto histórico de cada obra y se mostrarán sus vínculos con La acción, para terminar con algunas reflexiones que su lectura suscita en nuestro tiempo, cuyos desafíos son similares a los que Blondel tuvo que enfrentar en su momento. (shrink)

This paper presents philosophical perspectives related to the concept of boredom from the point of view of its forms and structural modes as developed by Martin Heidegger in his lectures at the University of Freiburg during the winter semesters of 1929 and 1930. We highlight a philosophical stance often overlooked in comparison to more traditional positions in Western philosophical thought—through the proposed hermeneutic-phenomenological processes, this will allow us to interweave their philosophical images with cinematographic narratives that enrich the factual understanding (...) of modernity. For this reason, we assume boredom and its essence, “tediousness”, as the fundamental mood of our era, thus permitting other mobilities of thought that warrant a study of phenomena relating to cultural entertainment as a symptom of the modern disease that distances Dasein from meeting, questioning, and self-care. (shrink)

La simplicidad desde la mirada poética es un asunto que, lejos de ser “inoficioso”, puede convertirse en una herramienta humana para asumir el riesgo de la existencia. Cuando el hombre vive en la simplicidad lo que hace es entablar una relación desnuda y directa con el mundo: se deja asombrar cada día, se sumerge en una felicidad en acto. Muchos poetas han sabido que a través de un lenguaje sobrio y, digamos, esencial es posible celebrar la simplicidad, y que ello (...) resulta ser un ejercicio tan válido como revelador. Creer en la simplicidad es creer en el entusiasmo. Vivir en la simplicidad es asumir una seria responsabilidad.  . (shrink)

La presente contribución indaga una dimensión de la intensa y compleja relación intelectual entre Henri de Lubac y Michel de Certeau, graficada en el paso del Corpus Mysticum a La fábula mística. En particular nos detenemos en una arista del proyecto intelectual de Lubac que busca desempolvar las potencialidades de la simbólica medieval para contrarrestar las nefastas derivas de la racionalidad moderna. Dicho proyecto se inspira en una ontología sacramental y en la centralidad de la allegoria in factis, heredada del (...) pensamiento de los Padres de la Iglesia. La reflexión que realiza Certeau en La fábula mística muestra ser no solo la continuación del Corpus Mysticum de Lubac, sino que de manera tangencial evidencia los límites del proyecto de su maestro, a través de su atención lúcida a la ruptura nominalista. Certeau muestra así que la emergencia de la mística moderna de los siglos xvi-xvii nace como respuesta al desaplazamiento de la allegoria in factis a la allegoria in verbis, que estaría a la raíz de la desontologización del lenguaje y del cisma entre la experiencia espiritual y la teología. (shrink)

El artículo, con base en un argumento de Michel Foucault: la vigencia –desde el siglo XVIII hasta hoy- de las estrategias liberales del poder para el gobierno de la población, hace una reflexión sobre la escuela actual. Argumenta que la democracia, en cuanto concreción visible de esas estrategias de poder, comporta procesos específicos en la escuela que son nombrados aquí, provisionalmente, como el tránsito desde una escuela disciplinada hasta otra conflictiva, violenta, terapéutica y falta de autoridad, es decir, indisciplinada. Pero, (...) y es el argumento fundamental, en la actualidad, más que invocar mayores cotas de libertad y de democracia para la escuela, se requiere reconocer las formas de sujeción de ese liberalismo democrático, y con ello, tal vez, proponer otras formas de estar en la escuela y en la sociedad. (shrink)

The literature addressing bias and fairness in AI models (fair-AI) is growing at a fast pace, making it difficult for novel researchers and practitioners to have a bird’s-eye view picture of the field. In particular, many policy initiatives, standards, and best practices in fair-AI have been proposed for setting principles, procedures, and knowledge bases to guide and operationalize the management of bias and fairness. The first objective of this paper is to concisely survey the state-of-the-art of fair-AI methods and resources, (...) and the main policies on bias in AI, with the aim of providing such a bird’s-eye guidance for both researchers and practitioners. The second objective of the paper is to contribute to the policy advice and best practices state-of-the-art by leveraging from the results of the NoBIAS research project. We present and discuss a few relevant topics organized around the NoBIAS architecture, which is made up of a Legal Layer, focusing on the European Union context, and a Bias Management Layer, focusing on understanding, mitigating, and accounting for bias. (shrink)

El artículo trata sobre la antropología de la masculinidad y de la feminidad, a partir de la experiencia del cuerpo y de la experiencia de la soledad originaria, tal como Juan Pablo II las analizó en sus Catequesis sobre el amor humano. Así, a partir de la experiencia del propio cuerpo sexuado, podemos llegar a la comprensión de la estructura comunional de la diferencia sexual. Varón y mujer son y existen en una «comunión de personas», y constituyen la estructura central (...) que articula y sostiene el orden personal. (shrink)

Quality of language comprehension determines performance in all kinds of activities including academics. Processing of words initially develops as auditory, and gradually extends to visual as children learn to read. School failure is highly related to listening and reading comprehension problems. In this study we analyzed sex-differences in comprehension of texts in Spanish in three modalities presented to 12–14-years old students, native in Spanish. We controlled relevant cognitive variables such as attention, phonological and semantic fluency and speed of processing. Girls’ (...) comprehension was similar in the three modalities of presentation, however boys were importantly benefited by dual-modality as compared to boys exposed only to visual or auditory text presentation. With respect to the relation of text comprehension and school performance, students with low grades in Spanish showed low auditory comprehension. Interestingly, visual and dual modalities preserved comprehension levels in these low skilled students. Our results suggest that the use of visual-text support during auditory language presentation could be beneficial for low school performance students, especially boys, and encourage future research to evaluate the implementation in classes of the rapidly developing technology of simultaneous speech transcription, that could be, in addition, beneficial to non-native students, especially those recently incorporated into school or newly arrived in a country from abroad. (shrink)

El Problema de la Adopción afirma que ciertas leyes lógicas no pueden ser adoptadas. El argumento constituye un desafío al antiexcepcionalismo lógico, en la medida en que este último debe poder justificar su afirmación de que la teoría lógica en ejercicio puede revisarse. El propósito de este artículo es responder al desafío, utilizando como unidad de análisis el concepto de Taxonomía Lexical propuesto por Kuhn. Como mostraremos, una visión sociológicamente enriquecida de las teorías científicas y la naturaleza de sus cambios (...) permite dar cuenta de un antiexcepcionalismo lógico que evita el Problema de la Adopción. (shrink)

La filosofía de la nada fue la respuesta ofrecida por Kitaro Nishida a la necesidad de asentar las bases de un diálogo filosófico con Occidente. Se propone en este trabajo que ese diálogo que todavía prosigue en la Escuela de Kyoto tenga entre uno de sus referentes occidentales a la filosofía del límite de Eugenio Trías. Para ello, y tras un repaso de los conceptos principales de cada propuesta filosófica, se considerará la adecuación del método categorial de análisis histórico propuesto (...) por Trías y se estudiarán los conceptos fundantes de «nada» y «límite», que a su vez son la base para una ética humanista capaz de entablar un diálogo entre las dos culturas. (shrink)

This article presents an enquiry into one aspect of Michel de Certeau’s intellectual project: to make Christianity intelligible in our epistemological situation. I seek to demonstrate how this epistemological and theological question shapes many of his historical and anthropological works, which seek to elucidate the re-composition of the human sciences and Christianity from a particular reading of modernity. The matrix of his thought is configured by the irruption of mystical experience in otherness and strangeness and the questions this poses to (...) the claimed uniqueness modern reason, heir to the Aufklärung. We will inquire about the fundamental theoretical tools that support the political discernment made by Michel de Certeau in the cultural crisis of May 68. Then we analyse the place of the nominalist rupture in the process of desontologization of language and the passage from the religious system to the ethics of Enlightenment as a way through the notion of “the formality of practices”. Both are preludes to his particular reading of secularization. (shrink)

Después de la publicación de su tesis doctoral titulada La acción (1893), el filósofo francés Maurice Blondel escribió algunas obras en las que trató asuntos de enorme importancia, tanto en el campo filosófico como teológico, que desarrollaron las temáticas centrales de La acción, obra que a finales del siglo XIX generó tanto revuelo en el ambiente filosófico francés. Con la conciencia de su actualidad y su inmenso valor para una perspectiva novedosa de la metafísica y el diálogo fe-razón, se pretende (...) aquí una aproximación a cuatro obras que los estudiosos del pensamiento blondeliano han llamado “menores”. El presente artículo desarrolla los principales aportes de dichas obras a la reflexión filosófica contemporánea, indagando al mismo tiempo por la filosofía de la acción en cada una de ellas. Después de una corta biografía del pensador en cuestión, se abordará el significado de la filosofía de la acción con vistas a su elucidación para el lector. Posteriormente se presentará el contexto histórico de cada obra y se mostrarán sus vínculos con La acción, para terminar con algunas reflexiones que su lectura suscita en nuestro tiempo, cuyos desafíos son similares a los que Blondel tuvo que enfrentar en su momento. (shrink)

Neste artigo apresentamos de forma breve uma teoria searliana de interpretação dos atos de fala. Mostramos através do exemplo das metáforas que, conforme proposta por Searle, a interpretação de atos de fala consistiria em reconhecer a intenção do falante. Esse processo se daria por meio do uso de regras convencionais da linguagem tanto pelo falante quanto pelo ouvinte. Contudo, as metáforas são um exemplo de que essa proposta de interpretação não é suficiente para descrever o processo pelo qual os agentes (...) interpretam atos de fala. Argumentamos que se deve acrescentar a esse processo a noção de regras estratégicas. Seguindo Peirce, duas regras estratégicas são oferecidas: o princípio da coerência e o princípio da economia. Parece também satisfatório acrescentar o princípio da não-contradição. Embora estudos empíricos não sejam definitivos sobre o tema da interpretação, em especial sobre metáforas, os resultados apontam para a aplicação de regras estratégicas na interpretação. Finalmente, é sugerido que se Searle está certo ao dizer que interpretação é o reconhecimento da intenção do falante, então a interpretação depende do uso de regras convencionais e do uso de regras estratégicas. (shrink)

Dentro de la sociología francesa actual, Gilles Lipovetsky se ha convertido de forma paulatina en uno de los sociólogos con mayor proyección internacional, con sus finos análisis sobre las sociedades postmodernas. En este artículo se plantea una revisión crítica de las principales líneas argumentativas que expone el autor francés. El objetivo es el de reflexionar sobre las limitaciones de su aproximación a los conceptos de postmodernidad, hipermodernidad, y consumo.

In recent years, the term populism has become indeed popular. Among its variants, a very particular one stands out. It is the so-called managerial populism, in which prominent businessmen have entered the arena of politics with a program focused on the regeneration of economic and social life. Donald Trump, perhaps, has been the most outstanding example. In this article, our aim is to analyze this phenomenon of managerial populism, addressing a number of issues. Firstly, we will discuss the emergence of (...) a certain type of charismatic leadership in business or management ideologies as a development that largely precedes the consolidation of these figures in the political scene; the implications of these ideologies in the political and social sphere; and the importance of the forms of discursive use of the concept of people in these popular discourses. (shrink)

Fermina Álvarez Alonso | : Contrairement à ce qui avait été reconnu précédemment, on a été frappé du surprenant silence et du manque de réception théologico-juridique des instituts séculiers durant le concile Vatican II. Beaucoup de membres de ces instituts s’attendaient à ce que le concile Vatican II accorde une attention particulière aux nouvelles formes de vie consacrée, en précise la nature, l’action, indique le lieu qui leur convienne dans le corps organique de l’Église et, enfin, exprime un jugement (...) positif à leur égard. Mais, en fin de compte, ils ne furent mentionnés que brièvement au no 11 de Perfectae Caritatis et dans le Décret Ad Gentes. Un excursus historique présente les instituts séculiers depuis leur reconnaissance juridique initiale en 1947, à travers la Constitution apostolique Provida Mater Ecclesia, et met en évidence, en particulier, la contribution apportée par quelques religieux clarétains comme Tabera et Larraona, qui travaillèrent à l’approbation de cette réalité. En suivant la trace des instituts séculiers durant les travaux du concile Vatican II jusqu’à l’étape préparatoire, on a retrouvé quelques interventions qui mettaient en relief leur nouveauté et leur apport pour l’Église. Les instituts séculiers, bien qu’impliqués dans les discussions sur les religieux, seraient davantage à inclure dans l’environnement laïc ; en fait, les caractéristiques de sécularité, de mission et d’état de perfection lié aux conseils évangéliques, sont le patrimoine commun de tous les chrétiens du fait de leur consécration baptismale. Ainsi, à travers une diversité multiforme de formes juridiques, aux dons et charismes élargis dans l’Église, les laïcs rendent possible le prolongement de l’Incarnation. | : Contrary to that which has previously been affirmed, in the Second Vatican Council one observes a surprising silence about and an absence of a theological-juridical reception of secular institutes. Many members of these secular institutes expected the Second Vatican Council to give special attention to the new forms of consecrated life, to clarify their nature and action, to indicate the place they would have in the organic body of the Church and, finally, to express a judgment encouraging such institutes. In the end, however, they are mentioned briefly in no. 11 of Perfectae Caritatis and in the Decree Ad Gentes. An historical excursus presents secular institutes from their first juridical recognition in 1947, in the Apostolic Constitution Provida Mater Ecclesiae, and in particular the contribution made by a few Claretian religious, such as Tabera and Larraona, who worked for the approval of this reality, is pointed out. Following the journey of the secular institutes during the work of the Second Vatican Council from the preparatory phase, a few interventions are extracted which demonstrate their originality and their contribution to the Church. Secular institutes, while forming part of the discussion regarding religious, should also be included in the discussion regarding the laity ; in fact, the characteristic of being secular, of mission, and of a life of perfection reached through the evangelical counsels are the common patrimony of all Christians as a result of their baptismal consecration, and under a variety of juridical forms, according to the gifts and charisms bestowed upon the Church, the laity make possible an extension of the Incarnation. (shrink)

Dentro de la sociología francesa actual, Gilles Lipovetsky se ha convertido de forma paulatina en uno de los sociólogos con mayor proyección internacional, con sus finos análisis sobre las sociedades postmodernas. En este artículo se plantea una revisión crítica de las principales líneas argumentativas que expone el autor francés. El objetivo es el de reflexionar sobre las limitaciones de su aproximación a los conceptos de postmodernidad, hipermodernidad, y consumo.

According to a growing body of studies, people’s ability to forecast future emotional experiences is generally biased. Nonetheless, the existing literature has mainly explored affective forecasting in relation to specific events, whereas little is still known about the ability to make general estimations of future emotional states. Based on existing evidence suggesting future-oriented disposition as a key factor for mental health, the aims of the current study were (1) to investigate the relationship between negative (NA) and positive (PA) affective forecasting (...) biases and perceived psychological well-being, and (2) to explore whether positively biased predictions are associated with resilience and foster one’s skills to cope with stressful events. To do so, we asked 85 undergraduate students to forecast PA and NA over two weeks, as well as to report their daily affect through a web-based Ecological Momentary Assessment. According to the results, positively biased PA forecasting (i.e., overestimating positive emotional states) was associated with greater perceived psychological well-being and higher resilience. When high levels of stress were experienced, participants holding an optimistic, yet biased, estimation of future PA were more likely to successfully manage stressors, thus maintaining lower levels of NA and higher levels of positive emotions. We suggest that positively biased PA forecasting is an adaptive cognitive distortion that boosts people’s resilience and mental health, thus opening new avenues for the promotion of psychological well-being. (shrink)