1. Introduction to a dilemma. 2. Returning to the beginning of time. 3. From a non-existent time in classical physics to an strange destiny of time in nowadays science. 4. Time of those who want understand the reality of history. 5. What will be, then, an existent time from which we can talk about the history of time (or the time of history) denoting and "omega point"?

La presente reseña de Escritores viajeros. El nomadismo como poética destaca el valor de la fórmula homo viator como columna interpretativa con la que Asunción Rangel analiza la obra de cuatro poetas hispanoamericanos.

La verdad en cuanto ligada al lenguaje ha de ser concebida simultáneamente como coherencia y como correspondencia. Pero la palabra es siempre, a la vez, impotencia y fuerza creadora. Ahí es donde se sitúa realmente el tema de la verdad. La razón nos sitúa ante la responsabilidad de un proyecto y unos fines. La ciencia nos acerca a la verdad de lo que es la realidad en cuanto "acción racional de la razón practica". Se trata de un proceso de "empastamiento" (...) o progresiva coherencia, que no llega nunca a "tocar" la realidad. Hay una relación dialéctica entre nuestro juicio y la realidad. nuestra imputación de realidad se nos convierte en un "juicio de verdad" hermenéuticamente desvelada. (shrink)

RESUMEN En este trabajo discutimos tres formulaciones semánticas del condicional: la material, la estricta y la relevante. Defendemos que, desde un punto de vista formal, el condicional relevante responde mejor a nuestras intuiciones que los otros dos. Ahora bien, dado que la interpretación semántica del mismo es terreno disputado, proponemos hacerlo pragmáticamente. Dividimos el texto en tres secciones. En la primera proponemos el criterio de adecuación para evaluar distintas teorías de los condicionales: la teoría no debe dar lugar a los (...) casos más conocidos de sobregeneración inferencial. En la segunda mostramos que el condicional material y el condicional estricto sobregeneran, pues ambos admiten paradojas bien conocidas. En la última mostramos que si se interpreta pragmáticamente, el condicional relevante bloquea la aparición de las paradojas que los dos anteriores no pueden evitar, y, en esa medida responde mejor que ellos al criterio establecido y, por tanto, a nuestras intuiciones. ABSTRACT In this paper we discuss three semantic formulations of conditional: material, strict and relevant. Our aim is to show that the relevant conditional shapes our intuitions better than the other two. Since the semantic interpretation of the relevant conditional is an unsettled issue nowadays, we propose a pragmatic interpretation of it. In the first part of the paper we present the criteria to which a theory of conditionals must answer, i.e. the theory must not overgenerate. In the second one, we show that the material and the strict conditionals overgenerate because both lead to paradoxes. In the last part we show that the relevant conditional with a pragmatic interpretation solves the problem of the other conditionals. (shrink)

In this article the focus is on the topic of indeterminacy of the sources of law. Indeterminacy in this domain may be a product of a lack of legislative regulation or open texture of law, this analysis of the causes of indeterminacy regarding the sources of law is applied to the Cuban legal system.Resumen:El tema de las fuentes del derecho sigue siendo de primer orden en la ciencia jurídica contemporánea, por lo cual resulta de gran utilidad para los juristas abordar (...) las problemáticas que se generan en torno al mismo. Las causas de indeterminación de las fuentes del derecho —determinadas en unos casos por la falta de regulación por parte del legislador y en otros por la textura abierta del derecho que regula el sistema de fuentes— en el sistema jurídico, es una de dichas problemáticas. El objetivo: analizar las causas de indeterminación de las fuentes del derecho y su expresión en contextos jurídicos como el cubano. (shrink)

Como parte del trabajo del taller interno permanente del Cuerpo Académico de Estética y Arte de la Benemérita Universidad Autónoma de Puebla, el 12 de noviembre de 2013 se realizó una Mesa Redonda sobre el tema “Universalidad e identidad cultural”. En esta Mesa participaron los doctores José Ramón Fabelo Corzo, José Antonio Pérez Diestre y Ramón Patiño Espino, como ponentes principales; además, se contó con la asistencia del doctor Jesús Márquez Carrillo, quien se integró al debate. Diferentes disciplinas —la (...) filosofía, la antropología, la historia del pensamiento y del arte, incluso la biología— pueden, cada una, ofrecer sus aportes al tan socorrido tema de la relación entre lo universal y lo propio en la cultura latinoamericana. El debate suscitado puso de manifiesto esa diversidad de aportaciones. En este trabajo presentamos las intervenciones realizadas por cada uno de los integrantes de la mesa, en el orden en que se produjeron. (shrink)

Uterus transplantation (UTx) research has been introduced in several countries, with trials in Sweden and the United States producing successful outcomes. The growing interest in developing UTx trials in other countries, such as Spain, the Netherlands, Japan, and Australia, raises important questions regarding the ethics of surgical innovation research in the field of UTx. This paper examines the current state of UTx in the context of the surgical innovation paradigm and IDEAL framework and discusses the ethical challenges faced by those (...) considering the introduction of new trials. We argue that UTx remains an experimental procedure at a relatively early stage of the IDEAL framework, especially in the context of de novo trials, where protocols are likely to deviate from those used previously and where researchers are likely to have limited experience of UTx. We conclude that countries considering the introduction of UTx trials should build on the strengths of the reported outcomes to consolidate the evidence base and shed light on the uncertainties of the procedure. Authorities responsible for the ethical governance of UTx trials are advised to draw on the ethical framework used in the oversight of surgical innovation. (shrink)

The Totonac homegarden is a traditionally designed agroecosystem mixing different elements, such as cultivated and wild plants, and livestock. Our objective was to understand the role and importance of homegardens as a strategy for subsistence and natural resources management. Anthropological fieldwork was carried out in Coxquihui, Veracruz, Mexico, a Totonac community. Conventional sampling using a questionnaire yielded a sample of 40 individuals, each representing a family group. Personal interviews, life stories, observations, and field transects enriched survey information. Fieldwork permitted identification (...) of four types of Totonac homegardens: backyards, cropping fields, acahuales or fallow fields, and fences or field edges. Each of these gardens yields an array of products and services important for several cultural roles and natural resource management aims. Totonacs see land as the dominant and most critical resource. A great deal of terrain is steeply sloped and soils are poor. Homegardens play a key role in a production system that minimizes these site limitations, striking a balance between resource maintenance and subsistence needs. Their functions are ecological, to foster a multistrata vegetation cover, and a continuous supply of organic matter to the soil; economic, serving as living storehouses where diverse products (food, timber, firewood, forage, animals, ceremonial supplies, medicinal products), are kept through the annual cycle; and social, performing various social roles such as growing medicinal, ritual, and edible plants, thus supporting beliefs and culture continuity. Studies like this contribute to a better understanding of Totonac culture and native ecology, and give ideas for a better land management. (shrink)

8 March, now known as International Women’s Day, is a day for feminist claims where demonstrations are organized in over 150 countries, with the participation of millions of women all around the world. These demonstrations can be viewed as collective rituals and thus focus attention on the processes that facilitate different psychosocial effects. This work aims to explore the mechanisms involved in participation in the demonstrations of 8 March 2020, collective and ritualized feminist actions, and their correlates associated with personal (...) well-being and collective well-being, collective efficacy and collective growth, and behavioral intention to support the fight for women’s rights. To this end, a cross-cultural study was conducted with the participation of 2,854 people from countries in Latin America and Europe, with a retrospective correlational cross-sectional design and a convenience sample. Participants were divided between demonstration participants and non-demonstrators or followers who monitored participants through the media and social networks. Compared with non-demonstrators and with males, female and non-binary gender respondents had greater scores in mechanisms and criterion variables. Further random-effects model meta-analyses revealed that the perceived emotional synchrony was consistently associated with more proximal mechanisms, as well as with criterion variables. Finally, sequential moderation analyses showed that proposed mechanisms successfully mediated the effects of participation on every criterion variable. These results indicate that participation in 8M marches and demonstrations can be analyzed through the literature on collective rituals. As such, collective participation implies positive outcomes both individually and collectively, which are further reinforced through key psychological mechanisms, in line with a Durkheimian approach to collective rituals. (shrink)

Unfounded—conspiracy and health—beliefs about COVID-19 have accompanied the pandemic worldwide. Here, we examined cross-nationally the structure and correlates of these beliefs with an 8-item scale, using a multigroup confirmatory factor analysis. We obtained a two-factor model of unfounded (conspiracy and health) beliefs with good internal structure (average CFI = 0.98, RMSEA = 0.05, SRMR = 0.04), but a high correlation between the two factors (average latent factor correlation = 0.57). This model was replicable across 50 countries (total N = 13,579), (...) as evidenced by metric invariance between countries (CFI = 0.96, RMSEA = 0.06, SRMS = 0.07) as well as scalar invariance across genders (CFI = 0.98, RMSEA = 0.04, SRMS = 0.03) and educational levels (CFI = 0.98, RMSEA = 0.04, SRMS = 0.03). Also, lower levels of education, more fear of COVID-19, and more cynicism were weakly associated with stronger conspiracy and health beliefs. The study contributes to knowledge about the structure of unfounded beliefs, and reveals the potential relevance of affective (i.e., fear of COVID-19) and cognitive (i.e., cynicism) factors along with demographics, in endorsing such beliefs. In summary, we obtained cross-cultural evidence for the distinctiveness of unfounded conspiracy and health beliefs about COVID-19 in terms of their structure and correlates. (shrink)

La presente investigación aborda los distintos modelos urbanísticos que propuso Le Corbusier a lo largo de toda su trayectoria. Estos modelos principales, cuantificándose hasta cuatro, además de otros de menor entidad, muestran la evolución en la conceptualización y las características que propuso para la ciudad del siglo XX. Su aplicación a las diferentes ciudades, tanto interiores como litorales, evidencian tanto la diversidad de su urbanismo como la adaptabilidad de los mencionados modelos a casos reales. De este modo, se procura superar (...) las visiones parciales que habitualmente se hacen sobre toda su obra urbana. (shrink)

This paper reports the experience of using the PAELLA algorithm as a helper tool in robust regression instead of as originally intended for outlier identification and removal. This novel usage of the algorithm takes advantage of the occurrence vector calculated by the algorithm in order to strengthen the effect of the more reliable samples and lessen the impact of those that otherwise would be considered outliers. Following that aim, a series of experiments is conducted in order to learn how to (...) better use the information contained in the occurrence vector. Using a contrively difficult artificial data set, a reference predictive model is fit using the whole raw dataset. The second experiment reports the results of fitting a similar predictive model but discarding the samples marked as outliers by PAELLA. The third experiment uses the occurrence vector provided by PAELLA in order to classify the observations in multiple bins and fit every possible model changing which bins are considered for fitting and which are discarded in that particular model. The fourth experiment introduces a sampling process before fitting in which the occurrence vector represents the likelihood of being considered in the training data set. The fifth experiment considers the sampling process as an internal step to be performed interleaved between the training epochs. The last experiment compares our approach using weighted neural networks to a state of the art method. (shrink)

IntroductionRheumatologists are the primary healthcare professionals responsible for patients with rheumatic diseases and should acquire medical ethical competencies, such as the informed consent process. The objective clinical structured examination is a valuable tool for assessing clinical competencies. We report the performance of 90 rheumatologist trainees participating in a station designed to evaluate the ICP during the 2018 and 2019 national accreditations.MethodsThe station was validated and represented a medical encounter in which the rheumatologist informed a patient with systemic lupus erythematosus with (...) clinically active nephritis about renal biopsy. A trained patient–actor and an evaluator were instructed to assess ICP skills in obtaining formal informed consent, delivering bad news and overall communication with patients. The evaluator used a tailored checklist and form.ResultsCandidate performance varied with ICP content and was superior for potential benefit information but significantly reduced for potential complications and biopsy description. Only 17.8% of the candidates mentioned the legal perspective of ICP. Death was omitted by the majority of the candidates ; after the patient–actor challenged candidates, only 57.1% of them gave a clear and positive answer. Evaluators frequently rated candidate communications skills as superior, but ≥1 negative aspect was identified in 69% of the candidates.ConclusionsEthical competencies are mandatory for professional rheumatologists. It seems necessary to include an ethics competency framework in the curriculum throughout the rheumatology residency. (shrink)