Se estudia la conveniencia de incluir el concepto de histéresis en las disciplinas humanistas, así como la necesidad de incorporar el análisis de los fenómenos donde aquél participa. La histéresis se produce en los más diversos campos de la acción y el pensamiento humanos, y su estudio contribuiría a completar y perfeccionar la visión que tenemos de los mismos. Al realizar la inclusión que aquí se propone, se operan varios cambios de orden epistemológico, operativo y conceptual. En las disciplinas humanistas, (...) los conceptos vienen asumiendo por tradición el papel de herramientas analíticas en bastante mayor medida que el de contenidos sobre los que efectuar el análisis. La histéresis manifiesta su alcance como hecho a analizar y también como herramienta de análisis, pero en el caso presente hemos tenido en cuenta más aspectos del segundo enfoque que del primero. De aquí que nos hayamos centrado en ubicar su campo epistemológico. (shrink)

This paper presents the manner in which the DNA, the molecule of life, was discovered. Unlike what many people, even biologists, believe, it was Johannes Friedrich Miescher who originally discovered and isolated nuclein, currently known as DNA, in 1869, 75 years before Watson and Crick unveiled its structure. Also, in this paper we show, and above all demonstrate, the serendipity of this major discovery. Like many of his contemporaries, Miescher set out to discover how cells worked by means of studying (...) and analysing their proteins. During this arduous task, he detected an unexpected substance of unpredicted properties. This new substance precipitated when he added acid to the solution and it dissolved again when adding alkali. Unexpectedly and by a mere fluke, Miescher was the first person to obtain a DNA precipitate. The paper then presents the term serendipity and discusses how it has influenced the discovery of other important scientific milestones. Finally, we address the question of whether serendipitous discoveries can be nurtured and what role the computer could play in this process. (shrink)

In recent decades, the expansion of economic activity has been accompanied by negative environmental impacts. In response, there have been dramatic changes worldwide in terms of an increased demand for environmentally friendly products and services. To achieve these eco-innovations, firms have sought to acquire knowledge and implement operational flexibility by cooperating with different agents such as universities through a value cocreation system that is also expected to enhance firms’ performance. Using a sample of 250 companies, the present paper examines the (...) role of cooperation with universities in the development of diverse environmental innovations and building operational flexibility and, through this, improving firm performance. Results show that firms that value cooperation with universities develop a wider range of environmental innovations and increase their sales and benefits. (shrink)

By using the notion of a simplified (κ,1)-morass, we construct κ-thin-tall, κ-thin-thick and, in a forcing extension, κ-very thin-thick superatomic Boolean algebras for every infinite regular cardinal κ.

Perhaps the hottest topic in the philosophy of chemistry is that of the relationship between chemistry and physics. The problem finds one of its main manifestations in the debate about the nature of molecular structure, given by the spatial arrangement of the nuclei in a molecule. The traditional strategy to address the problem is to consider chemical cases that challenge the definition of molecular structure in quantum–mechanical terms. Instead of taking that top-down strategy, in this paper we face the problem (...) of the reduction of molecular structure to quantum mechanics from a bottom-up perspective: our aim is to show how the theoretical peculiarities of quantum mechanics stand against the possibility of molecular structure, defined in terms of the spatial relations of the nuclei conceived as individual localized objects. We will argue that, according to the theory, quantum “particles” are not individuals that can be identified as different from others and that can be reidentified through time; therefore, they do not have the ontological stability necessary to maintain the relations that can lead to a spatially definite system with an identifiable shape. On the other hand, although quantum chemists use the resources supplied by quantum mechanics with successful results, this does no mean reduction: their “approximations” add certain assumptions that are not justified in the context of quantum mechanics or are even inconsistent with the very formal structure of the theory. (shrink)

The World Health Organization, in its last review of its International Classification of Diseases, established a new classification for chronic pain. Among the principal categories, of particular interest is chronic primary pain as a new type of diagnosis in those cases in which the etiology of the disease is not clear, being termed as chronic primary visceral pain when it is situated in the thorax, abdomen, or pelvis. Due to the novelty of the term, the objective of the systematic review (...) was to examine the psychopathological and neuropsychological disorders associated with chronic primary visceral pain. We carried out a search of the scientific literature following the PRISMA directives using the Pubmed, Medline, PsycInfo and Scopus databases. A total of 33 articles were selected after applying the inclusion and exclusion criteria. The analysis of the studies showed that most persons with chronic primary visceral pain suffer from at least one psychological disorder; the most prevalent being anxiety, depressive or somatoform disorders. The most frequent psychopathological symptoms are anxiety, depression and somatization. Similarly, the findings are insufficient to determine the existence of deficits in the domains of executive functioning, memory and intelligence. However, the existence of attention biases does seem to be clear. This review supposes a starting point for conceptualizing chronic primary visceral pain. It is necessary to continue further research so as to obtain a better understanding of this pathology and the disorders associated. (shrink)

Although during the last decades the philosophy of chemistry has greatly extended its thematic scope, the main difficulties appear in the attempt to link the chemical description of atoms and molecules and the description supplied by quantum mechanics. The aim of this paper is to analyze how the difficulties that threaten the continuous conceptual link between molecular chemistry and quantum mechanics can be overcome or, at least, moderated from the perspective of BM. With this purpose, in “The quantum-mechanical challenges” section (...) the foundational incompatibility between chemical and SQM descriptions will be briefly recalled. “Bohmian mechanics” section will be devoted to explain the main features of BM. In “Empirical equivalence and underdetermination” section, the consequences of the empirical equivalence between SQM and BM will be discussed. Finally, in the Conclusion, we will stress the scope of the obtained conclusions and the philosophical difficulties that still remain even after adopting BM for foundational purposes. (shrink)

The retina pigment epithelium (RPE) is a highly specialised epithelium that serves as a multifunctional and indispensable component of the vertebrate eye. Although a great deal of attention has been paid to its transdifferentiation capabilities and its ancillary functions in neural retina development, little is known about the molecular mechanisms that specify the RPE itself. Recent advances in our understanding of the genetic network that controls the progressive specification of the eye anlage in vertebrates have provided some of the initial (...) cues to the mechanisms responsible for RPE patterning. Here, we have outlined many recent findings that suggest that a limited number of transcription factors, including Otx2, Mitf and Pax6 and a few signalling cascades, are the elements required for the onset of RPE specification in vertebrates. Furthermore, using this information and the data available on the specification of the pigmented cells of primitive chordates, we have ventured some hypotheses on the origin of RPE cells during evolution. BioEssays 26:766–777, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

In connection with some known results on uncountable cardinal sequences for superatomic Boolean algebras, we shall describe some open questions for superatomic Boolean algebras concerning singular cardinals.

Although during the last decades the philosophy of chemistry has greatly extended its thematic scope, the main difficulties appear in the attempt to link the chemical description of atoms and molecules and the description supplied by quantum mechanics. The aim of this paper is to analyze how the difficulties that threaten the continuous conceptual link between molecular chemistry and quantum mechanics can be overcome or, at least, moderated from the perspective of BM. With this purpose, in “The quantum-mechanical challenges” section (...) the foundational incompatibility between chemical and SQM descriptions will be briefly recalled. “Bohmian mechanics” section will be devoted to explain the main features of BM. In “Empirical equivalence and underdetermination” section, the consequences of the empirical equivalence between SQM and BM will be discussed. Finally, in the Conclusion, we will stress the scope of the obtained conclusions and the philosophical difficulties that still remain even after adopting BM for foundational purposes. (shrink)

En este artículo el profesor Manuel Ángel Martínez expone los temas más importantes de la reflexión teológica de Antonio Royo Marín. Se centra especialmente en una de sus obras más importantes La Teología de la Perfección. Royo Marín ha sido un predicador infatigable. Muestra de ello son los numerosos escritos que dejó y su amplia divulgación entre muchos fieles cristianos. Varios grupos, repartidos en diversos lugares del mundo, siguen nutriéndose de su teología. La profundidad con la que están escritos (...) y la claridad de su exposición permiten a muchos lectores un acercamiento a la espiritualidad cristiana y a sus fuentes. Los Santos Padres de los primeros siglos del cristianismo, Santo Tomás, Santa Teresa de Jesús, San Juan de la Cruz, Santa Teresa de Lisieux, Santa Catalina de Siena, Juan González Arintero, entre otros, inspiraron la reflexión teológica de Royo Marín.El 17 de abril se cumplirán cinco años de su fallecimiento. Con este motivo y respondiendo a las numerosas demandas que nos han llegado, ofrecemos a todos los lectores la magnífica descripción que de su teología ha escrito en Ciencia Tomista el profesor Manuel Ángel Martínez Juan. (shrink)

En este artículo el profesor Manuel Ángel Martínez expone los temas más importantes de la reflexión teológica de Antonio Royo Marín. Se centra especialmente en una de sus obras más importantes La Teología de la Perfección. Royo Marín ha sido un predicador infatigable. Muestra de ello son los numerosos escritos que dejó y su amplia divulgación entre muchos fieles cristianos. Varios grupos, repartidos en diversos lugares del mundo, siguen nutriéndose de su teología. La profundidad con la que están escritos (...) y la claridad de su exposición permiten a muchos lectores un acercamiento a la espiritualidad cristiana y a sus fuentes. Los Santos Padres de los primeros siglos del cristianismo, Santo Tomás, Santa Teresa de Jesús, San Juan de la Cruz, Santa Teresa de Lisieux, Santa Catalina de Siena, Juan González Arintero, entre otros, inspiraron la reflexión teológica de Royo Marín.El 17 de abril se cumplirán cinco años de su fallecimiento. Con este motivo y respondiendo a las numerosas demandas que nos han llegado, ofrecemos a todos los lectores la magnífica descripción que de su teología ha escrito en Ciencia Tomista el profesor Manuel Ángel Martínez Juan. (shrink)

ABSTRACTThe social content of affective stimuli has been proposed as having an influence on cognitive processing and behaviour. This research was aimed, therefore, at studying whether automatic exogenous attention demanded by affective pictures was related to their social value. We hypothesised that affective social pictures would capture attention to a greater extent than non-social affective stimuli. For this purpose, we recorded event-related potentials in a sample of 24 participants engaged in a digit categorisation task. Distracters were affective pictures varying in (...) social content, in addition to affective valence and arousal, which appeared in the background during the task. Our data revealed that pictures depicting high social content captured greater automatic attention than other pictures, as reflected by the greater amplitude and shorter latency of anterior P2, and anterior and posterior N2 components of the ERPs. In addition, social content also provoked greater allocation of processing resour... (shrink)

Se analiza, en este estudio, la sintáctica, la semántica y la pragmática del conflicto en una muestra de 359 profesores de enseñanza no universitaria en España. Se establece la vinculación entre las dimensiones de la sintáctica del conflicto y los modos o estrategias de afrontamiento del conflicto propuestos por Kreidler, 1984. Los resultados apuntan hacia una visión negativista de la realidad del conflicto como fruto de la cultura, aunque con ciertos indicios de positividad en cuanto a la pragmática del conflicto.

ABSTRACT Objective: To describe how local research ethics committees (LRECs) consider and apply research ethics in the evaluation of biomedical research proposals. Design: A qualitative study was conducted using purposeful sampling, focus groups and a grounded theory approach to generate data and to analyse the work of the LRECs. Setting and participants: 11 LRECs of the Mexican Institute of Social Security (IMSS). Results: LRECs considered ethics to be implicit in all types of research, but that ethics reviews were only necessary (...) for projects that included the direct participation of human beings. The LRECs appeared to understand the importance of consent, as in the completion of a consent form, but did not emphasise the importance of the process of acquiring ‘informed’ consent. The committees considered their main roles or functions to be: (a) to improve the methodological quality of research and to verify – if applicable – the ethical aspects; (b) to encourage personnel to undergo research training; (c) to follow‐up research to oversee the adherence to norms and compliance with a specified research timetable. Conclusions: This study provides a valuable insight into how these LRECs understand the ethical review process. The emphasis of the committees was on rules, regulations, improving research methodology and research training, rather than a focus on efforts to protect the rights and well being of research subjects. The results encourage further normative and descriptive lines of investigation concerning education and the development of LRECs. (shrink)

Cognitive Archaeology is a theoretical perspective in archaeology, the boundaries of which fade into the field of cognitive science. From a classic perspective, Cognitive Archaeology is, according to Huffman Beach , “the study of prehistoric ideology: the ideals, values, and beliefs that constitute a society’s worldview” . For this purpose a cognitive archaeologist studies historical and archaeological evidence in a series of diverse objects like material symbols, tools, the relation with the space, political and religious thinking. However, an approach to (...) these topics involves taking into account the way people of antiquity represented their reality. In other words, it involves thinking about how the mind has built itself through history by its interaction with the material world.To explore the limits of our conceptions of the material world and their relations with the mind in the constitution of human cognition Lambros Malafouris presents How Things Shape the Mind: A Th .. (shrink)

El objetivo principal de este artículo es diseñar un método para detectar qué cosas pueden considerarse “evidentes”. Comienza analizando cómo se ha entendido la evidencia en la tradición aristotélica y tomista hasta nuestros días. Después del estudio histórico, en el Capítulo III se procede a realizar un análisis sistemático de la noción de evidencia y sus clases. En este trabajo se descubren diez características que aparecen en las cosas evidentes (en las ideas, en los primeros principios, nociones más básicas, pruebas, (...) etc.). Definidas estas diez características, la forma de diseñar una prueba de evidencia resulta fácil. El Capítulo IV hace esto: primero se diseña un test negativo, que muestra que algún argumento no es evidente, y luego un test positivo, que indica que alguna idea, principio, prueba, etc. parece ser evidente. Terminamos este trabajo con algunas consideraciones sobre cómo este test-dual puede funcionar en la ciencia del derecho. (shrink)

Turing was an exceptional mathematician with a peculiar and fascinating personality and yet he remains largely unknown. In fact, he might be considered the father of the von Neumann architecture computer and the pioneer of Artificial Intelligence. And all thanks to his machines; both those that Church called “Turing machines” and the a-, c-, o-, unorganized- and p-machines, which gave rise to evolutionary computations and genetic programming as well as connectionism and learning. This paper looks at all of these and (...) at why he is such an often overlooked and misunderstood figure. (shrink)

Con el objeto de identificar lo que creemos constituye una ontología política posmetafísica en el pensamiento de Bataille –fuertemente vinculada a la práctica de la escritura– el presente trabajo intenta situar la especificidad teórica que ocupa el exceso como problema ontológico en su filosofía, a partir del desarrollo de un recorrido que reflexiona sobre el estatuto de dicho exceso en Lévi-Strauss y el posestructuralismo, por un lado, y en el pensamiento político posfundacional, por el otro.

Con el objeto de identificar lo que creemos constituye una ontología política posmetafísica en el pensamiento de Bataille –fuertemente vinculada a la práctica de la escritura– el presente trabajo intenta situar la especificidad teórica que ocupa el exceso como problema ontológico en su filosofía a partir del desarrollo de un recorrido que reflexiona sobre el estatuto de dicho exceso en Lévi-Strauss y el posestructuralismo, por un lado, y en el pensamiento político posfundacional, por el otro.

Avec la publication de La communauté désœuvrée et La communauté inavouable, Maurice Blanchot et Jean-Luc Nancy commencent, au début des années 1980, un dialogue dont l’objet fut le thème de la communauté. Ce dialogue, cependant, n’impliquait pas seulement les noms de Blanchot et Nancy : ils se reconnaissaient héritiers d’une réflexion qui avait déjà commencé Nietzsche et Bataille. Plusieurs années plus tard, dans La communauté désavouée, Nancy revient sur ce débat et il s’y interroge : qu’est-ce que Blanchot voulait dire (...) avec les arguments qu’il avait opposé contre le livre écrit par Nancy? Partant de cette question, avec laquelle Nancy commence le dernier essai autour ce thème, ce travail propose de reconstruire le dialogue entre Blanchot et Nancy pour y trouver le lien entre communauté et écriture. (shrink)

It is not yet clear which response behavior requires self-regulatory effort in the moral dilemma task. Previous research has proposed that utilitarian responses require cognitive control, but subsequent studies have found inconsistencies with the empirical predictions of that hypothesis. In this paper we treat participants’ sensitivity to utilitarian gradients as a measure of performance. We confronted participants (N = 82) with a set of five dilemmas evoking a gradient of mean utilitarian responses in a 4-point scale and collected data on (...) heart rate variability and on utilitarian responses. We found positive correlations between tonic and phasic HRV and sensitivity to the utilitarian gradient in the high tonic group, but not in the low tonic group. Moreover, the low tonic group misplaced a scenario with a selfish incentive at the high end of the gradient. Results suggest that performance is represented by sensitivity correlated with HRV and accompanied with a reasonable placement of individual scenarios within the gradient. (shrink)

Quantum chemistry is the branch of chemistry whose primary focus is the application of quantum mechanics to chemical systems at the molecular level. Precisely due to its peculiar position between chemistry and physics, in the last times it has begun to engage the interest of the philosophers of chemistry. Nevertheless, in this philosophical field, quantum chemistry has been studied mainly from a historical viewpoint or from a perspective interested on methodological issues. By contrast, the question that will guide this article (...) is: what kind of ontic items are those studied by quantum chemistry? In order to develop the argumentation, first the relevance of the ontological questions will be addressed. Then, it will be considered in what measure the Born-Oppenheimer approximation and the quantum-chemistry concept of electron fit in the quantum theoretical context. Finally, some issues about what quantum chemistry refers to will be discussed. (shrink)

The incompatibility within the context of modeling cannot be established simpliciter. The fact that modeling is understood as an activity whose representational power can only be partially established, may minimize the supposed existence of incompatible models. Indeed, it is argued from perspectivism that incompatibility can be dissolved, meaning that it becomes trivial or simply false due to the inherently pragmatic and partial nature of the act of representation and modeling. From this perspective, incompatibility can only be a consequence of a (...) misunderstanding of the very nature of modeling and representation In this sense, in order to tackle this strategy at its root from perspectivism, we will first need to outline the maximal perspectivism thesis, attempting to identify the possible escape routes that perspectivism could find in order to explain incompatibility as an illusory incompatibility. Then, we will analyze Valence Bond Model and Molecular Model of covalent bonds, and we will conclude that the dissuasive strategies used to minimize and/or disregard incompatibility prove to be fruitless. (shrink)

In the present paper we address the problem of optical isomerism embodied in the socalled “Hund’s paradox”, which points to the difficulty to account for chirality by means of quantum mechanics. In particular, we explain the answer to the problem proposed by the theory of decoherence. The purpose of this article is to challenge this answer on the basis of a conceptual analysis of the phenomenon of decoherence, that reveals the limitations of the theory of decoherence to solve the difficulties (...) posed by optical isomerism and, in general, by quantum measurement. (shrink)