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)

Adults (more than 18 years old) are likely to reproduce the habits that they acquired during childhood and adolescence (from 6 to 16 years old). For that reason, teachers and parents have the responsibility to promote an active and healthy lifestyle in children and adolescents. Even though every school subject should promote healthy activities, Physical Education (PE) is the most important subject to foster well-being habits associated to healthy lifestyle during sport practice and other kinds of active tasks. Indeed, there (...) are many factors that influence the acquisition of healthy habits that should be taken into account when programs and activities are implemented in both educational and extracurricular context. In this sense, psychological and social factors are of utmost importance to achieve optimal experiences for an active and healthy lifestyle. However, due to the myriad of studies analyzing different factors in different contexts, there could be confusion when programs and pedagogical strategies are applied in educational or extracurricular contexts. The objective of this investigation is to analyze the state of art of the psychosocial factors which influence the engagement in physical activities and sport practice. The keywords used in this review were mainly: ‘Self-Determination Theory’, ‘motivation’, ‘Psychological need satisfaction, ‘physical activity and sport engagement’, ‘Elementary Education’, ‘Secondary Education’, ‘Physical Education’. The articles were selected according to the following criteria: (a) peer-reviewed original research published in international journals indexed in JCR or SJR, (b) published in English or Spanish, (c) about psychosocial factors which influence the physical activity and sport engagement, (b) in educational or extracurricular context. Research articles selected were found through nine databases. It was observed that physical activities and sport practice engagement are closely related to psychological factors. In particularly, intrinsic motivation was able to determine the active participation in any activity, including physical activity and sport practice during the implementation of Small-Sided Games and other kinds of pedagogical strategies (e.g., Pedagogical Models). Motivation was also closely related to flow state. Finally, these variables should be considered in order to organize effective programs to promote an active and healthy lifestyle in Physical Education classes. (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.

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)

Presentaré formalmente la reología como una filosofía precisa. Hoy hemos de habérnoslas con nuestras herramientas que no pueden ser, por razones que veremos, ni la epistemología ni la ontología clásicas; requerimos de «noología» y «reología», filosofías incoadas en el pensamiento de Xavier Zubiri. Teniendo a la noología por realismo de partida en el que «realidad es» modo de quedar las cosas en la aprehensión, y a la reología por realismo de llegada en el que la constitución estructural de las cosas (...) «es realidad», la metafísica queda purgada de lastres vetustos. Todo se presenta en dos partes: I) Escasez de reólogos, expondremos qué se entiende por «noología» y por «reología». II) Realidad, expondremos el problema de los «dos» realismos («de partida» y «de llegada»), lo concretizaremos en la filosofía de Zubiri y veremos que «ambos» son más bien uno solo. Concluiremos que, si queremos tener una filosofía pertinente para el conocimiento contemporáneo del mundo sin limitarnos a un estudio escolar de un autor, hemos de hacer reología. (shrink)

Aim: The presence of noise in urban environments is rarely considered a factor that causes damage to the environment. The primary generating source is transportation means, with vehicles being the ones that affect cities the most. Traffic noise has a particular influence on the quality of life of those who are exposed to it and can cause health alterations ranging from annoyance to cardiovascular diseases. This study aims to describe the relationship between the traffic noise level and the perceived annoyance (...) in the inhabitants of a city on the Northern Border of Mexico. The work carried out in a city represents the vulnerability characteristics: economic, social, and migratory of its sizable portion of the inhabitants. Due to that, it is impossible to identify precisely the number of residents as the number of vehicles in circulation.Methods: The streets and avenues with an annual average daily traffic of more than 1,000 vehicles were considered for the measurement of traffic noise. The equipment used was a vehicle gauge with non-invasive speed radar; type I integrating sound level meters, with their respective gauges and tripods. A questionnaire was applied to people living within 250 m of the streets and avenues in which the noise was measured.Results: The noise measurement found a parameter of LAeq estimated for 12 h during the day, exceeding 70 dBA. The data received from the questionnaire were statistically tested by using Pearson's correlation tests. A total number of 2,350 people were participated, of whom 1,378 were women and 972 were men. The age of participants is ranged from 18 to 75 years. The overall perception of traffic noise annoyance identified that 1,131 participants responded “Yes” as they considered the noise annoying. Participants who responded “No” as well as those who responded “Do not know” resulted in a total of 1,219 people.Conclusion: The results show that the population is desensitized to traffic noise and does not perceive it as an annoyance. The flow of vehicles and the type of vehicles are the significant factors for the propagation and increase in the traffic noise levels. Women present a considerable appreciation of traffic noise perception instead of younger people who demonstrate a higher tolerance to high-level exposure. This reflects the lack of information of the population around the noise problem and its effects. (shrink)

La professionnalisation des enseignants comme facteur contribuant à la qualité de l’éducation répond, en partie, à la formation qu’ils ont reçue. Dans le système pédagogique de l’alternance, en raison de la diversité des éléments et des acteurs qui interviennent, l’enseignant se pose une série de difficultés liées à la pratique de ses fonctions qui en affectent la qualité. Dans cet article, à travers les résultats obtenus à partir d’entretiens semi-dirigés, une étude est présentée qui analyse le point de vue d’experts (...) dans le domaine de la formation des formateurs des centres d’alternance. (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)

En este trabajo se analiza la idea de justicia como principio inspirador de buen gobierno y, de cómo ha evolucionado. La estrecha relación actual entre orden y justicia, ha supuesto la aparición de un paradigma democrático que tiene más que ver con las ideas de estabilidad y seguridad que con la idea de justicia. Tal circunstancia ha desembocado en una utopía normativa en la que orden y justicia, libertad y seguridad, se oponen entre sí en detrimento de la pluralidad política (...) y de los espacios participativos. (shrink)

Presentación de las editoras del Suplemento 4 (2011) de Daimon.

En el presente texto se hace una lectura fenomenológica del relato mítico amazónico del Yurupary. A partir de esta, se defiende la tesis de que en la oralitura que se manifiesta en este relato se ofrece la cosmovisión de una cultura precolombina; en esta, se plasma en su estructura interna una determinada manera de estar-en-el-mundo, es decir, devela rasgos de la dimensión ontológica de la misma. Para exponer la tesis anterior el texto se divide en tres partes: I. “De la (...) fenomenología o presupuestos metodológicos”; II. “Aproximación fenomenológica al relato”, y III. “Perspectivas”. (shrink)

En este artículo presentaré la tesis de que la ciencia ha continuado pensando aristotélicamente en función del concepto de sustancia y propondré otra variable independiente: la sustantividad. Para ello, echaré mano brevemente de los horizontes de comprensión que Xavier Zubiri ha encontrado en Occidente (movilidad y nihilidad), para luego mostrar por qué nuestra situación intelectual nos invita a pensar en las estructuras de las cosas desde un horizonte que podría llamarse de la complejidad.

Esta investigación pone en diálogo las posiciones de Hobbes y de Spaemann respecto a la naturaleza de la confianza, para lo cual se asume una postura hermenéutica. Los principales resultados de esta arrojan que para Hobbes la confianza ha de ser aprendida, pues la desconfianza es lo primero con lo que se encuentra el ser humano; mientras que, para Spaemann, el hombre es un ser confiado y aprende a desconfiar. Como efecto de este diálogo se descubre que ambos autores tienen (...) como base para la confianza la sociabilidad humana, por lo cual se concluye que la disposición de la confianza se da en la naturaleza humana como condición de posibilidad para el acto de confiar. (shrink)

Resumen Este artículo tiene por objetivo exponer cómo la contaduría como profesión puede ampliar su horizonte de reflexión sobre el concepto de bien común fundamentándose en los postulados principales de la Doctrina Social de la Iglesia dentro de su horizonte interpretativo, para lo cual se basa en una metodología cualitativa y un método dialógico fundamentado en la hermenéutica gadameriana. El principal aporte de este estudio es proponer que la contaduría, basada en el bien común desde la Doctrina Social de la (...) Iglesia, tiene que cambiar de paradigma, generar y comunicar información financiera y no financiera orientada hacia todo el hombre y a todos los hombres, y estar orientada hacia la eco-nomía y la eco-logía. Abstract This paper aims to expose how accounting as a profession can broaden its horizon of reflection on the concept of common good based on the main postulates of the Catholic Social Teaching within its interpretive horizon, for which it is based on a qualitative methodology and a dialogic method founded on Gadamerian hermeneutics. The main contribution of this study is to propose that accounting, based on the common good from the Catholic Social Teaching, must change the paradigm, generate and communicate financial and non-financial information oriented towards all man and all men, and be oriented towards eco-nomy and eco-logy. (shrink)

This paper proposes freedom as the condition of possibility for the construction of trust in human relationships. The methodology used is a review of the scientific literature of the most recent moral and political philosophy. As a result of the dialogue between different positions, it is discovered that freedom, despite being present in the act of trust, is forgotten in the discussion around trust, a forgetfulness that has as its main causes the assumption that trust is natural and the confusion (...) between the propensity to trust and the act of trusting. All this leads to proposing an approach of the act of trusting that starts from the freedom of the trustee and the trustor. (shrink)

La presente reflexión es de tipo exploratoria y trata de indagar la relación que existe entre las retóricas antimarxistas sobrevenidas y la conversión de la violencia política en uno de los topos universales en el discurso «neoliberal» en contra del marxismo. En las últimas décadas, el «activismo» presente en la difusión del argumentario de estas retóricas engaña respeto de sus orígenes y de su extensión, dado que estas han sido una de las piezas fundamentales del neoliberalismo contra las resistencias, de (...) todo tipo, surgidas ante el avance de la globalización neoimperial por medios discursivos y por medios de contención violentos. Sin embargo, ignorando estas violencias, desde la Guerra Fría estas retóricas presentaron, de manera casi exclusiva, el marxismo como una «doctrina» antidemocrática y antijurídica. Los diversos discursos antimarxistas establecieron una vinculación entre violencia y marxismo para socavar su influencia y desprestigiar su análisis del capitalismo. (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)

This project seeks to highlight the benefits of the implementation and management of the teaching digital portfolio. In today's world full of technology and tools that facilitate daily activities, education and its various processes must also embrace the digital tools available and make them the basis for any innovation and improvement process. The teaching portfolio in physics has long been the means by which teachers have organized the processes, evidence, and other results of educational work. Nowadays, all that range of (...) evidence and productions, which signify the achievement and advances in each group of students, has been able to be integrated into technology. (shrink)