Es importante destacar que cuando en la historia de la física se hace referencia al problema de si la luz se transmite de manera instantánea o si requiere de tiempo –que se abreviará aquí como el problema de la propagación sucesiva de la luz– siempre destacan ciertos personajes: por un lado, Armand Hippolyte Louis Fizeau y Jean Bernard León Foucault, quienes en el siglo XIX lograron medir por primera vez de forma precisa la velocidad de la luz; y por otro, (...) los astrónomos Ole Christensen Roemer y James Bradley, quienes en los siglos XVII y XVIII –respectivamente– fueron los primeros en dar una respuesta derivada de trabajos observacionales de que la luz sí requiere de tiempo en su transmisión, esto es, que su propagación es sucesiva. Entre estos nombres, aparece siempre de forma algo etérea Galileo Galilei como el primero que propuso un enfoque experimental para dar respuesta a esta pregunta. (shrink)

Following González Vergara (2006a, 2009, 2012), the presence of the morpheme se in Spanish is explained by a lexical phenomenon that modifies the logical structure of sentences in which it appears. This phenomenon decreases the importance of the Actor and favors the Undergoer. According to this proposal, this phenomenon expresses itself, in most of the Spanish sesentences, as a lexical rule that makes unspecific the highest ranking argument. Taking the above as a basis, this paper explores and proposes explanations (...) for se alternating verbs of the type of matar(se), morir(se), dormir(se), despertar(se), terminar(se), adelgazar(se), engordar(se), envejecer(se), mejorar(se), controlar(se), crecer(se) y aparecer(se) in the framework of the Role and Reference Grammar. (shrink)

Name der Zeitschrift: Semiotica Jahrgang: 2017 Heft: 215 Seiten: 281-304.

This article reviews the didactic units in biology and environmental education in the context of Latin America, analyzing their design, implementation, and effectiveness in the teaching of environmental and biological topics. Through a literature review and case analysis, the most commonly used teaching strategies are identified and their impact on student learning is evaluated. It highlights best practices and proposes recommendations to improve the quality of biology and environmental education in the region.

Purpose As part of an international study of knowledge of and attitudes to Snowden’s revelations about the activities of the National Security Agency/Government Communications Headquarters, this paper aims to deal with Mexico, taking its socio-cultural and political environment surrounding privacy and state surveillance into account. Design/methodology/approach A questionnaire was answered by 160 Mexican University students. The quantitative responses to the survey were statistically analysed as well as qualitative considerations of free text answers. Findings Snowden’s revelations have had a limited influence (...) over Mexican youngsters’ attitudes toward privacy and state surveillance, although there is a great awareness by Mexican young people of individual rights issues. Practical implications The study results imply a need to build a collective awareness of the importance of the right to privacy and its responsibilities, the available technological options for individuals to exert their own privacy and security and the democratic means to agree and enforce appropriate legal restrictions on state surveillance. Social implications The results of this study based indicate an urgent necessity for providing Mexican youngsters with opportunities to learn more about privacy, liberty, individual autonomy and national security. Originality/value This study is the first attempt to investigate the social impact of Snowden’s revelations on Mexican students’ attitudes toward privacy and state surveillance as part of cross-cultural analyses between eight countries. (shrink)

The aim of this paper is to prove how what is apparently a mistake made by Plutarch, wheter deliberate or not, in his reference to the arson attack of Caesar´s soldiers in Alexandria as the end of the famous Library, show us the common sense of the term “bibliotheke” from that time up to now. Coming to this conclusion has required a detailed analysis of the Library of Alexandria since its birth applying Aristotelian doctrine to its configuration not only as (...) an organized space for books but also as an imaginary reading room from which the helenistic world of relations is established. In a second approach, we focus the attention on the change occurred in this collection with the introduction of alphabetical order and, then, with the philological activity of Callimachus. As a result of his Pinakes, the platonic concept of daimon, “guide”, became the first characteristic o a philologist or librarian. Using the information ordered in the Pinakes anybody could be a librarian and find a library anywhere. The old megále bibliotheke of Alexandría remains only with the idea of the conservation of original papyrus. This is de reason of the enigmatic sentence of Plutarch announcing the end of this situation caused by the action of the fire. (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)

Background: The COVID-19 pandemic has produced high stress in nurses, affecting their professional quality of life. Different variables affect psychological stress response and professional quality of life. In this context, the role of professional values represents an interesting object of research. Objectives: To analyze the relationship between professional values, perceived stress, and professional quality of life among nurses during the COVID-19 crisis. Research design, participants, and research context: Descriptive cross-sectional study. Participants were 439 registered nurses from the public health system. (...) Perceived stress, professional quality of life, and professional values were evaluated by using measuring instruments adapted and validated in the geographic context of research. Data were collected online in December 2020 during the second wave of the COVID-19 pandemic in Spain. Ethical considerations: This study was approved by the Ethics Committee on Clinical Research of the Principality of Asturias. Findings: Within professional values, ethics obtained higher scores showing the primacy of ethical values among nurses. Moderate correlations between ethics, mastery, expertise, and compassion satisfaction were found. Frontline nurses informed high perceived stress. The correlations between professional values and compassion satisfaction were higher in non-frontline nurses. A moderate negative correlation between perceived stress and compassion satisfaction was found in both groups, which implies that the higher the stress, the lower the satisfaction in the helping relationship. Conclusion: Professional values positively influence compassion satisfaction during the COVID-19 pandemic. Compassion satisfaction presents a negative correlation with fatigue compassion and burnout in frontline and non-frontline nurses. Given the functionality of values both to guide clinical practice professionally and ethically, and prevent dissatisfaction with one’s professional quality of life by reinforcing compassion satisfaction, it is necessary to reinforce them with an intensive and cross-sectional learning during the university training. (shrink)

El inicio del nuevo siglo viene caracterizado en el orden económico por la desigualdad y la creciente globalización. Se han producido, en los últimos tiempos, muchos cambios, pero también permanecen viejas estructuras. La gran cantidad de privaciones existentes es uno de los rasgos más distintivos de la economía mundial actual, sobre todo en relación con el nivel de riqueza logrado, la renta que se genera y el progreso tecnológico conseguido. Analizar estas privaciones, plantear las causas de por qué se producen (...) y examinar las tendencias de la economía mundial son el objetivo central de este trabajo. El proceso de globalización neoliberal que estamos viviendo desde los años ochenta no ayuda a resolver esos viejos problemas, sino que agrava, por el contrario, la desigualdad internacional, las diferencias que se dan entre los hombres y mujeres en cuanto oportunidades y derechos, e intensifica la desigualdad dentro de los Estados-nación, incluidos la mayor parte de los países desarrollados. (shrink)

Este trabajo constituye una revisión de los contenidos, orientación y objetivos de una parte significativa de los manuales de lógica elemental de las décadas de 1960 y 1970 redactados por autores españoles. En concreto, analizamos los prólogos, los rudimentos previos, y la presentación de los distintos cálculos que aparecen en tales obras. El estudio de la semántica, los contenidos metateóricos o las extensiones de la lógica elemental quedan para una segunda etapa de esta investigación.

Este libro es parte de la colección e-Libro en BiblioBoard.

In this paper, I defend a non-mechanistic interpretation of Kant's philosophy of nature. My interpretation contradicts the robust tradition of reading Kant as a mechanist about nature – or as someone who endorses the view that we can know the internally purposive causality characteristic of organisms has no place in nature. By attending closely to Kant's remarks about the possibility of internal purposiveness in nature and to key premises from Kant's arguments in the Antinomy of Teleological Judgment, we shall see (...) that it is not only plausible, but preferable, to believe that internally purposive things (i.e., organisms) exist in nature. Making room for such a belief leaves Kant with a philosophy of nature that simultaneously aligns with and surpasses the philosophies of nature offered up by his Early Modern predecessors. (shrink)

En este artículo intentaremos demostrar que precisamente una aparente confusión de Plutarco, desconocemos si intencionada o no, nos puso en contacto con el sentido ordinario que el término "Biblioteke" tendrá posteriormente hasta la actualidad. Llegar a esta conclusión supone un detallado análisis de la fundación de la Biblioteca de Alejandría atendiendo a su punto de partida desde la aplicación de la filosofía aristotélica a la configuración no sólo de un espacio ordenado para libros sino de un ámbito imaginario de lectura (...) desde el que se establece el mundo de relaciones helenístico. Este monopolio que, como industria del libro, nace y se desarrolla con la filología alejandrina, por obra de Calimaco y sus Pínakes se convierte en una "guía" platónica para la generalización de la biblioteca como una entidad de posible reproducción en cualquier parte, cambiando así el primitivo sentido del término e incluso su función restringida a un solo lugar. Finalmente, un análisis preciso de la frase de Plutarco nos confirmará en esta interpretación. (shrink)