In some small-scale societies, a sexual division of labor is common. For subadult hunter-gatherers, the onset of this division dates to middle childhood and the start of puberty; however, there is apparently no physiological explanation for this timing. The present study uses an experimental approach to evaluate possible energetic differences by sex in gathering-related activities. The energetic cost of gathering-related activities was measured in a sample of 42 subjects of both sexes aged between 8 and 14 years. Body mass and (...) other anthropometric variables were also recorded. Our results show that the energetic differences in the simulated gathering activities depend only on body mass. Both sexes expend a similar amount of energy during locomotion activities related to gathering. Discarding the energetic factor, the sexual division of tasks may be explained as an adaptation to acquire the skills needed to undertake the complex activities required during adulthood as early as possible. Carrying out gathering activities during childhood and adolescence could be favored by the growth and development cycles of Homo sapiens. Moreover, if most of the energetic costs of gathering activities depend on body mass, the delayed growth in humans relative to other primates allows subadults to practice these tasks for longer periods, and to become better at performing them. In fact, this strategy could enable them to acquire adults’ complex skills at a low energetic cost that can be easily subsidized by other members of the group. (shrink)

In hisStudy of War, Q. Wright considered a model for the probability of warP during a period ofn crises, and proposed the equationP=1– n, wherep is the probability of war escalating at each individual crisis. This probability measure was formally derived recently by Cioffi -Revilla, using the general theory of political reliability and an interpretation of the n-crises problem as a branching process. Two new, alternate solutions are presented here, one using D. Bernoulli''s St. Petersburg Paradox as an analogue, (...) the other based on the logic of conditional probabilities. Analysis shows that, while Wright''s solution is robust with regard to the general overall behavior ofp andn, some significant qualitative and quantitative differences emerge from the alternative solutions. In particular,P converges to 1 only in a special case and not generally. (shrink)

Con el giro del pensamiento contemporáneo hacia la cultura textovisual y multimedia, los géneros literarios, también el microrrelato, se expanden más allá de lo escrito en unas creaciones simbióticas en las que texto e imagen pueden ser contemplados de un solo golpe de vista en una unidad perceptiva. Partiendo de las estrategias narrativas que confluyen en ambos lenguajes y de la formulación conceptual de microrrelato hipermedial, se analiza la interacción de los componentes verbales y visuales en los microrrelatos que Patricia (...) Esteban Erlés ha publicado en Facebook. El universo imaginario fantástico de estas miniaturas narrativas se reviste en la red de una gran densidad semiótica, que multiplica las redes de significación narrativa. En ese orden de ideas, se estudia la interacción que entablan los imaginarios de Patricia Esteban Erlés y Diane Arbus en torno a lo monstruoso y siniestro. (shrink)

In online communication, writers incorporate into fictional representation imaginaries that arise from the interaction between various artistic manifestations. This paper explores the work of two spanish authors, Patricia Esteban Erlés and Albert Soloviev in order to study the social impact and ethical aspects of hypermedial short stories in the virtual space, since their works function as vehicles for social criticism. At the same time, the paper addresses fundamental questions associated with the understanding and interpretation of hybrid narrative microtexts.

En el artículo Los sistemas de investigación educativa en México se cuestiona la vigencia del sistema de investigación Hipotético Deductivo que se utiliza en nuestro país y que no sólo se presenta como método sino como el Método Científico. Se reconoce que, en nuestro país, los procesos de inve..

Ser, pensar, ver, mirar son el sustrato de la escritura de María Zambrano, que se apoya y brota de una irrenunciable voluntad de pensar y trazar la palabra que la vida necesita. Por ello escribe con la intención de reconducir la filosofía a la concreción de la existencia, para hacer del pensamiento, como ha dicho Wanda Tommasi, una instancia mediadora capaz de llevar a la luz de la conciencia las realidades oscuras del cuerpo, del sentir, de la pasión. María Zambrano (...) se mueve en la frontera entre filosofía y poesía. En los ensayos de Entre el alba y la aurora alienta algo de la investigación filosófica que los unifica: la voluntad de hacer de la lectura experiencia y de la escritura su articulación. En todos ellos la investigación ha sido reflexión sobre el modo en el que la obra de esta autora nos interpela y sobre el porqué de esta interpelación, dirigiendo la atención al contexto de las propias expectativas, a lo que el encuentro con sus páginas obliga a recomponer, al sentido que de aquí nace abriendo posibilidades de comprensión e interpretación. María Zambrano ayuda a pensar el fondo originario del vivir personal y enseña a darle un cauce, pone así de manifiesto el sentido del filosofar, acción reflexiva dirigida a la apertura de un futuro en tarea de creación que no es impositiva, sino liberadora. Carmen Revilla Guzmán es profesora de Filosofía contemporánea en la Universidad de Barcelona. Sobre María Zambrano, entre otras cosas, dirige la revista Aurora y ha editado el libro Claves de la razón poética (Trotta, 1998); recientemente ha publicado Simone Weil: nombrar la experiencia (Trotta, 2003). (shrink)

Después de transcurridos los años de violencia política en los años 80’s e inicios de los 90’s, Perú se vio envuelto en cambios estructurales que permitieran una reconstrucción nacional de la sociedad peruana. Durante este periodo, los diferentes procesos migratorios, los cambios en la política económica interna, las reformas políticas y educativas condicionaron a los peruanos y a las futuras generaciones bajo un modelo urbano de desarrollo basado en el consumo, la individualidad y modernidad. Un modelo de desarrollo político, educativo (...) y cultural que no incluya la violencia y la memoria como parte de la identidad y quehacer nacional. El presente texto propone una mirada crítica a los orígenes y consecuencias de la violencia política en nuestro país, analizando la relación entre los actores implicados, los proyectos ideológicos y la lucha por los derechos humanos. (shrink)

The biannual international workshop entitled “The diversification of early emerging metazoans: A window into animal evolution?” took place at the Evangelische Akademie Tutzing, Germany, 11–14. September 2017. It was organized by Thomas Bosch (Kiel), Thomas Holstein (Heidelberg), and Ulrich Technau (Vienna), and it was sponsored by the Deutsche Forschungsgemeinschaft (DFG). The meeting gathered over 140 researchers to discuss the contribution of non‐bilaterian metazoan models (Porifera, Ctenophora, Placozoa, and Cnidaria) to our understanding of: a. The evolution of metazoan developmental processes; b. (...) Fundamental molecular mechanisms underlying metazoan features; and c. The complex interactions that animals establish with their environment. (shrink)

Extractive foraging tasks, such as digging, are broadly practiced among hunter-gatherer populations in different ecological conditions. Despite tuber-gathering tasks being widely practiced by children and adolescents, little research has focused on the physical traits associated with digging ability. Here, we assess how age and energetic expenditure affect the performance of this extractive task. Using an experimental approach, the energetic cost of digging to extract simulated tubers is evaluated in a sample of 40 urban children and adolescents of both sexes to (...) measure the intensity of the physical effort and the influence of several anatomical variables. Digging is a moderately vigorous activity for inexperienced girls and boys from 8 to 14 years old, and it requires significant physical effort depending on strength and body size. However, extracting subterranean resources is a task that may be performed effectively without previous training. Sex-specific and age-specific differences in the net energy expenditure of digging were detected, even though both sexes exhibited similar proficiency levels when performing the task. Our results highlight that both boys and girls spend considerable energy while digging, with differences largely driven by body size and age. Other factors beyond ability and experience, such as strength and body size, may influence the proficiency of juveniles in performing certain physically intensive foraging tasks, such as gathering tubers. (shrink)

Las manifestaciones artísticas sexuales son para el hombre medieval una forma didáctica de conocimiento que le libera de la ignorancia del miedo al castigo eterno; abriendo la realidad medieval más allá de las prohibiciones y penitencias para liberar la búsqueda del más hondo y conmovedor misterio del ser humano, que se revela a través de la sexualidad y queda representado en el arte erótico románico como herencia trasgresora de la vivencia de una realidad más plena y convincente que la lectura (...) institucional que hemos recibido de la Iglesia. Estas manifestaciones corresponden a la senda olvidada del arte; a la lección prohibida. (shrink)

El coaching ejecutivo ha dado lugar a numerosos desarrollos de orientación básicamente prescriptiva. Una perspectiva crítica y con base empírica puede permitir ir más allá de la retórica del coaching e identificar las tensiones y las contradicciones de los procesos de coaching en un contexto organizacional, como entorno relacional y cultural. El objetivo de este trabajo es acercarnos críticamente al coaching ejecutivo individual en la práctica, estableciendo las diferencias entre lo preconizado por las teorías y los expertos del coaching y (...) lo que se hace en las empresas. Mediante 50 entrevistas en profundidad a coaches y coachees, identificamos cuatro grandes discursos sobre el coaching ejecutivo: a) herramienta de crecimiento personal; b) relación diádica; c) resolución de problemas en equipos de trabajo; y d) mecanismo de cambio organizacional. El análisis muestra las tensiones y las contradicciones ad intra y entre los discursos y, con ello, la importancia de considerar el contexto organizacional. (shrink)

María Zambrano’s thought is intimately linked to the way in which things are expressed. Thus, the question is posed: What is a philosophy that is done with words? In the case of María Zambrano, it could be said that in her relationship with words the work of a complicated, but also unitary and ..

This study reflects on the influence of Jasper’s thought on the work of Jeanne Hersch. Our hypothesis is based on the importance that Hersch attributed to the philosophical tradition as a way of carrying out a theoretical activity aimed at “communication” and articulated around the poietic dimension of the human being. The identification of certain nuclear categories in Hersch’s philosophy allows us to highlight certain distinctive features of her contribution, which characterize the different aspects of her reflection and materialize in (...) the attention to the present. (shrink)

The analysis of TV violence cannot be limited to the quantification of its incidence, but should also take into account the type of violence broadcast and its context (what is depicted and how). Thus, normative models of violence (legitimized violence with positive consequences for the aggressor, or vice versa) could be understood as positive, while contra-normative models of violence (rewarding illegitimate violence and punishing legitimate violence) should be of far greater concern. This paper analyzes the normative contexts of TV violence (...) through a content analysis of randomly selected fragments of TV programming (147 recorded hours). The results show that news programs and TV series/soaps delegitimized violence to a higher extent, while films tend to show legitimized or ambivalent violence. Positive consequences of violence predominate in fictional programs, except for TV series/soaps. Normative presentation of violence is more frequent, especially in nonfiction genres, as fiction has more freedom to depict the socially undesirable. (shrink)

This article examines the role of social media and journalistic media in presidential electoral processes. A systematic review of scientific articles published from 2012 to 2022 was conducted. The results indicate that the media has a significant influence on public perception and the political agenda during election campaigns. Furthermore, the importance of evaluating political leaders in the voters' decision-making process is emphasized. In summary, the article provides valuable insights into how the media can shape the narrative and public opinion during (...) presidential elections. (shrink)

María Zambrano art critic presents the special space that painting was for her. Transcribing her contemplations, she reveals an appropriate way to enter in the pictures: the poetic reason, which constitutes a new aesthetic based on fidelity to original reality and on the revelation of a presence. Zambrano defines painting as a creative act that bursts out of the artist odyssey towards his entrails and to the revelation always incomplete of the original reality. We want to understand the expression of (...) the enigmatic presence by the art of painting and by the poetic reason, through the analysis of the coherence between the principles of Zambrano aesthetic and her own art critic. The auroral motives of painting and the auroral metaphors of poetic reason take up the challenge of the ineffable presence receiving it in a form that becomes promise of transcendence and of revelation for the contemplator and the reader. The motif of the fire in Saint Barbara by the Master of Flemalle and its contemplation transcribed by Zambrano accompany us with the same intensity. Poetic reason constitutes an aesthetic because it stands in a radical plane of liberty-obedience, opening the door of the human paradox, centre of revelation and of creation. (shrink)

Krause, C. F. Concepto subjetivo-objetivo de lo bello.--Krause, K. C. F. [y] Sanz del Río, J. El arte y la poesía.--Fernández y González, F. Lo bello y la naturaleza.--Paula Canalejas, F. de. Del carácter de las pasiones en la tragedia y en el drama.--Giner de los Ríos, F. El arte y las artes.--Giner de los Ríos, F. Consideraciones sobre el desarrollo de la literatura moderna.--Revilla, M. de la. El naturalismo en el arte.--Revilla, M. de la. La tendencia docente (...) en la literatura contemporánea.--González Serrano, U. Consideraciones sobre el arte y la poesía.--Alas, L. Benito Pérez Galdós. (shrink)

El presente trabajo busca establecer una relación entre el marcado carácter masculino que durante siglos ha tenido la actividad política y el veto a la mujer en el acceso a los estudios de Derecho. Partiendo de la explicación de la regla prohibitiva y el recuerdo de las juristas parlamentarias pioneras de principios del siglo xx, el estudio se centra en las juristas parlamentarias de la Transición, en concreto, en las que formaron parte de las Cortes Constituyentes de 1977-1979. El objetivo (...) último es reconocer el valor de las aportaciones de todas aquellas mujeres que, en unos años difíciles en España, se enfrentaron no solo al reto de realizar unos estudios con limitadas salidas profesionales para ellas, sino que participaron en aquella legislatura con la esperanza de recuperar y consolidar la democracia. (shrink)