El concepto de _physis_ y sus derivados aparecen cientos de veces en los diálogos de Platón. Dado el carácter poco sistemático de su autor y los muchos años que dedicó a la escritura filosófica, no debe sorprender la diversidad de sentidos en que emplea un término ya de por sí complejo y polisémico. Por otra parte, Platón recoge, sintetiza y reelabora algunas de las concepciones fundamentales de la _physis_, siendo de especial relevancia las de los filósofos pluralistas, interesándose por los (...) elementos constitutivos del mundo físico y tomando partido en la discusión en torno a su carácter, bien mecánico, bien teleológico. En este estudio se analiza tanto la asimilación platónica de la física presocrática, como la influencia ejercida en el planteamiento aristotélico, especialmente por lo que respecta a la causalidad final y al principio del movimiento. (shrink)

The given work analyses several aspects of the concept te’cnh in Plato´s philosophy. At the same time, it deals with his attempt of finding a type of behaviour which counts on the same features as arts and science, in other words, a behaviour based on rational principles that will enable us to act accurately and according to our principles. He followed the path of Socrates in the process of the search for such behaviour. The sophists were proud of teaching a (...) certain political science that, to Plato, is an exclusive property of the philosopher who is acquainted with the intelligible forms and makes use of the right calculation and measure. According to him, these two would be the undeniable components of what we may define as the good and happy life of an individual. (shrink)

The given work analyses several aspects of the concept te’cnh in Plato´s philosophy. At the same time, it deals with his attempt of finding a type of behaviour which counts on the same features as arts and science, in other words, a behaviour based on rational principles that will enable us to act accurately and according to our principles. He followed the path of Socrates in the process of the search for such behaviour. The sophists were proud of teaching a (...) certain political science that, to Plato, is an exclusive property of the philosopher who is acquainted with the intelligible forms and makes use of the right calculation and measure. According to him, these two would be the undeniable components of what we may define as the good and happy life of an individual.El presente estudio analiza algunos aspectos del concepto de te’cnh en la filosofía de Platón, así como el intento, siguiendo los pasos de su maestro, de encon- trar un tipo de conducta que posea las mismas características que las artes y ciencias, es decir, basado en principios racionales capaces de proporcionar fiabilidad y precisión a nuestras acciones. Los sofistas se preciaban de enseñar una ciencia política que, en opinión de Platón, es propiedad exclusiva del filósofo que conoce las Formas inteligibles y se sirve del cálculo y la medida, componentes indispensables de toda vida buena y feliz. (shrink)

This article begins with Feuerbach’s critique of religion in order to recover the humanist sense of such critique, which is more than an affirmation of atheism or a denial of God’s existence, it is a defense of dignity and freedom Human. Throughout this study Feuerbach’s thinking is placed beyond the discussion between atheism and theism, establishing a dialogue that set aside the limitations of this dichotomy. In the history of philosophy, the importance of Feuerbach’s thought for the later philosophy of (...) suspicion has been emphasized, but in this case a less explored path is followed: his relation to dialogical thinking and the religion of love. (shrink)

B‐cell acute lymphoblastic leukaemia (B‐ALL) is a clonal malignant disease originated in a single cell and characterized by the accumulation of blast cells that are phenotypically reminiscent of normal stages of B‐cell differentiation. B‐ALL origin has been a subject of continuing discussion, given the fact that human disease is diagnosed at late stages and cannot be monitored during its natural evolution from its cell of origin, although most B‐ALLs probably start off with chromosomal changes in haematopoietic stem cells. However, the (...) cells responsible for maintaining the disease appear to differ between the different types of B‐ALLs and this remains an intriguing and exciting topic of research, since these cells have been posited to be responsible for resistance to conventional therapies, recurrence and dissemination. During the last years this problem has been addressed primarily by transplantation of purified subpopulations of human B‐ALL cells into immunodeficient mice. The results from these different reconstitution experiments and their interpretations are compared in this review in the context of normal B‐cell developmental plasticity. While the results from different research groups might appear mutually exclusive, we discuss how they could be reconciled with the biology of normal B‐cells and propose research avenues for addressing these issues in the future. (shrink)

En este artículo se parte de la crítica de Feuerbach a la religión para recuperar el sentido humanista de dicha crítica, que más que una afirmación del ateísmo o una negación de la existencia de Dios es una defensa de la dignidad y de la libertad humana. A lo largo de este estudio se sitúa el pensamiento de Feuerbach más allá de la discusión entre el teísmo y el ateísmo, estableciendo un diálogo que deja a un lado las limitaciones de (...) esta dicotomía. En la Historia de la filosofía se ha insistido en la importancia del pensamiento de Feuerbach para la posterior filosofía de la sospecha, pero en este caso se recorre una vía menos explorada: su relación con el pensamiento dialógico y la religión del amor. (shrink)

El presente artículo tiene por objetivo realizar un análisis del quehacer del profesional y especialista de seguridad y salud en el Trabajo de un grupo egresados de esta disciplina, este proceso parte del análisis de cuatro dimensiones, una primera enfocada a la parte demográfica, la segunda lo sociolaboral, la tercera a las barreras que se pueden presentar en la Gestión de Seguridad y Salud en el Trabajo en las empresas y la cuarta enfocada en aspectos tecnológicos y de innovación en (...) el diseño, implementación y mantenimiento del Sistema de Gestión de Seguridad y Salud en el Trabajo. (shrink)

Fundamentación: el desarrollo de la cultura profesional docente colaborativo se sustenta en los postulados vigotskianos, donde se concibe al profesor como un sujeto comprometido con las demandas y exigencias de la sociedad. Objetivo: socializar las categorías de análisis que se deben tener en cuenta en un colectivo docente para el desarrollo de una cultura profesional colaborativa en el proceso de formación del profesional de la educación superior. Método: se realizó un estudio etnográfico en la Universidad José Martí Pérez, de Sancti (...) Spíritus, apoyada en la metodología cualitativa y un grupo de técnicas posibilitó la recogida de la información. Resultados: se obtuvieron las categorías de análisis que están estrechamente asociadas al deber ser de un docente universitario, portador de esta cultura. Conclusiones: a partir de la coincidencia de criterios sobre los aspectos teóricos y la reflexión colectiva emergieron elementos indispensables en un colectivo para lograr la cultura profesional docente colaborativa a la cual se aspira, elaborados al tener en cuenta su estructura de contenido y forma. Background: the development of collaborative professional teaching culture is based on Vigotskian statements, where the teacher is seen as an individual compromised with the demanding and needs of the society. Objective: Socialize the analytical categories that should be taken into consideration in a teaching staff for the development of collaborative professional teaching culture in the process formation of the professional of higher education. Method: an ethnographic study was carried out in the University José Marti Pérez, from Sancti Spiritus, based on a qualitative methodology and a group of techniques that make data collection possible. Results: The analytical categories obtained were closely linked to the requirements of a university teacher that has this culture. Conclusions: starting from common criteria about theoretical aspects and group reflection, vital elements emerged in the teaching staff to get the collaborative professional teaching culture that is needed, elaborated taking into account its structure of content and form. (shrink)

En este artículo se analizan las diferentes formas de ver la relación entre democracia y liberalismo que tienen Raymond Aron y Ortega y Gasset. Las perspectivas de cada uno respecto a esa relación se encuentran determinadas por el contexto socio-histórico en el que ambos formularon sus teorías. Ortega en los años 30 observa el peligro que corren las democracias liberales por el auge de los movimientos fascistas y bolchevique y ve una deriva de los Estados hacia el totalitarismo, lo que (...) le impulsa a formular una nueva idea de liberalismo. Aron se encuentra, después dela Segunda GuerraMundial, con un panorama geopolítico en el que dominan dos bloques ideológicamente antagónicos, EEUU yla URSS, que le servirán para presentar dos modelos de democracia, en el primero hay libertad de partidos y en el segundo hay un partido único. Para el autor francés, será el primero el que mejor va a cumplir el ideal democrático. (shrink)

In spite of the advances in our knowledge of cancer biology, most cancers remain not curable with present therapies. Current treatments consider cancer as resulting from uncontrolled proliferation and are non‐specific. Although they can reduce tumour burden, relapse occurs in most cases. This was long attributed to incomplete tumour elimination, but recent developments indicate that different types of cells contribute to the tumour structure, and that the tumour's cellular organization would be analogous to that of a normal tissue, with a (...) main mass of differentiating cells sensitive to anti proliferative agents, together with a small percentage of quiescent, resistant stem cells responsible for replenishing the tumour: the Cancer Stem Cells (CSCs). Anti‐CSCs targeted therapeutic agents would prevent tumour regeneration. New mouse models tailored to exploit this novel concept will be critical to develop CSC‐based anti‐cancer therapies. Here we review the biological basis and the therapeutic implications of the stem‐cell model of cancer. BioEssays 29:1269–1280, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

El presente artículo muestra cómo los problemas de orden lógico estudiados por Frege y Peirce a finales del siglo XIX devienen en el desarrollo de la filosofía analítica y en la filosofía del lenguaje en el siglo XX. En ese sentido, existe un hilo conductor que articula las propuestas reflexivas de los pragmatistas clásicos con los últimos desarrollos lingüísticos desde la semántica y la pragmalingüística en el marco de las consideraciones sobre los enfoques del lenguaje, entendido este como una red (...) de significados construidos en contextos de enunciación específicos. (shrink)

Relationships between degree/area of academic formation and religious and Darwinian views are controversial. This study aimed to compare the religious beliefs and acceptance of Darwinian evolution between two contrasting South American scientific communities (Chile and Colombia), accounting for different degrees and areas of academic formation. In 2018, 115 last year bachelor students (surveyed as freshmen in 2014 for a previous study) from Chile, and 283 first/last year bachelor students, graduate students, and professors from Colombia, all belonging to biology, chemistry, or (...) physics, were surveyed. Chilean students/faculty were significantly more agnostic/atheist, more accepting of Darwinian evolution, and less creationist than their Colombian counterparts. Academic degree and area differently affected these views in both countries, as only in Chile there was a clear tendency among biologists and physicists with higher degrees to hold less religious and creationist views. Marked differences between the history, socioeconomic contexts, and especially in high school and university curricula of both countries might explain these results. (shrink)

KOINONIA/ASETT MINGA/MUTIRÃO DE REVISTAS DE TEOLOGIA LATINO-AMERICANAS Una nueva dimensión epistemológica para la teología: la Teología de la Liberación y el desafío epistemológico (A new epistemological dimension to theology: liberation theology and epistemological challenge).

Los objetivos de nuestro estudio se basarán en ahondar en que el verdadero prosumer ha conformado la personificación de la interactividad absoluta en la generación de mensajes, historias o cualquier otro tipo de contenidos. Por tanto, se subraya que no solo es trascendental para la eficacia de una narración la estructura y los ingredientes de ésta, sino también la manera en que se cuenta, el medio utilizado y la plataforma de visualización. También resulta relevante el sentido de la fragmentación de (...) la propia narración para el éxito de su hiperconectividad argumental y emocional. (shrink)

Disasters and public health emergencies raise a variety of ethical dilemmas, often including those that require balancing the best interests of individuals against those of groups or communities. The on-going COVID-19 pandemic provides examples of these ethical conflicts, as do other recent outbreaks. Decisions and actions in this context must address different ethical issues, ranging from those directly related to autonomy, consent, privacy and confidentiality to those related to interventions and technologies, such as efficacy, effectiveness, safety and fair access. This (...) paper aims to identify ethical conflicts with complex resolutions involving aspects related to values, rights and needs of individuals and the collective, and to suggest how such challenges could lead to more positive experiences and outcomes when confronted in future emergencies. (shrink)

Positive family functioning during adolescence is usually studied analyzing parents' competences and children's relationship abilities. We present an instrument for the assessment of parental competence, which encompasses both educational style and transmission of values. The objective of the study was to analyze its factor structure and to assess its value in predicting adolescent outcomes. We recruited 2,459 high school students, aged 12–15, in 40 schools from Spain, Peru, Mexico, and Chile. They responded to the instrument and to other questions regarding (...) lifestyles. Exploratory and confirmatory factor analyses were carried out in order to assess the internal structure of the instrument, and internal consistency of the resulting dimensions was calculated. Finally, regression analyses were performed to establish associations between the parenting dimensions and adolescent outcomes. Factor analyses showed a consistent structure, with good fit indices in the four countries. The final four factors include parenting styles and education in values. Regression analyses showed associations with adolescent outcomes. For example, adolescents' life satisfaction was best predicted by Warmth and Education in fortitude. Practical implications are suggested. (shrink)