Las micotoxinas son metabolitos fúngicos secunda­rios que pueden ejercer un efecto tóxico tanto en el hombre como en los animales debido, principalmente, a su exposición a través de los alimentos. La presencia de estos compuestos ha sido demostrada en una amplia variedad de materias primas, alimentos y piensos, en los que lo habitual es encontrar de for­ma frecuente una contaminación múltiple por diferentes mico­toxinas, en pequeñas cantidades, lo que puede generar efectos tóxicos subcrónicos, así como bioacumulación. Este artículo revisa los (...) principales elementos que configuran la problemática de las micotoxinas para el hombre y los animales, y aborda los retos de futuro que se plantean en el estudio de las micotoxinas, entre los que destacan el efecto que el cambio climático puede tener sobre el patrón de contaminación por micotoxinas en los alimentos, el descubrimiento creciente de nuevas micotoxinas en formas modificadas, la evaluación de la coexistencia de estas to­xinas y otros contaminantes, y las formas para detectar e intentar eliminar estos compuestos tóxicos de los alimentos. (shrink)

Frente al modelo epistémico de la modernidad "ideas claras y distintas", "ordine geometrico", en el barroco español prevalece la expresión de los símbolos y la referencia a los valores, la nada, la vida, la temporalidad, os sueños y la sabiduría intuitiva y proyectiva: san Juan de la Cruz, Gracián, Quevedo, Calderón... También en el s. XX, el modo de entender "europeo" es diferente. Unamuno habla del "método de la pasión" y "sabiduría frente a la ciencia" ; Ortega de "la (...) interpretación española del mundo" y "la razón al servicio de la vida" ; el poeta A. Machado de "visiones cordiales u opiniones de sentido, en vez de definiciones conceptuales". Son diferentes modos de entender la modernidad . (shrink)

El derecho a la identidad se ha constituido a lo largo del tiempo en el paradigma ético, político y jurídico que sustenta el reclamo de Abuelas de Plaza de Mayo por la restitución de quienes fueron apropiados/as durante la vigencia del Terrorismo de Estado en Argentina. En la actualidad, este derecho está consagrado con jerarquía constitucional en nuestro orden jurídico y existen organismos públicos, como la Comisión Nacional por el Derecho a la Identidad (CONADI), que velan por garantizarlo y reparar (...) su violación en el pasado. Sin embargo, este derecho no siempre existió como tal. Su formulación actual es producto de una historia compleja en la que se entrecruzaron el activismo político de Abuelas, la intervención de profesionales e intelectuales que colaboraron con su causa y diferentes actores de las redes trasnacionales de derechos humanos y de defensa de los derechos de la niñez. A partir del relevamiento y análisis de testimonios orales y fuentes escritas de diversa procedencia, en este artículo indagaremos los orígenes históricos del derecho a la identidad y los actores involucrados en su “invención”. Examinaremos también su impacto en la lucha de Abuelas de Plaza de Mayo y su trascendencia más allá de esta causa puntual. Este análisis nos permitirá observar cómo la “invención” de este derecho se produjo en el diálogo entre saberes globales y el activismo local de Abuelas de Plaza de Mayo y entre la especificidad históricamente situada de su causa y la expectativa universalista y transhistórica de los Derechos Humanos. (shrink)

It is a common belief that males have superior visuospatial abilities and that differences in this and other cognitive domains (e.g., math) contribute to the reduced interest and low representation of girls and women in STEM education and professions. However, previous studies show that gender-related implicit associations and explicit beliefs, as well as situational variables, might affect cognitive performance in those gender-stereotyped domains and produce between-gender spurious differences. Therefore, the present study aimed to provide information on when, how and who (...) might be affected by the situational reactivation of stereotypic gender-science beliefs/associations while performing a 3D mental rotation chronometric task (3DMRT). More specifically, we assessed the explicit beliefs and implicit associations (by the Implicit Association Test) held by female and male students of humanities and STEM majors and compared their performance in a 3DMRT after receiving stereotype- congruent, incongruent and nullifying experimental instructions. Our results show that implicit stereotypic gender-science associations correlate with 3DMRT performance in both females and males, but that inter-gender differences emerge only under stereotype-reactivating conditions. We also found that changes in self-confidence mediate these instructions’ effects and that academic specialization moderates them, hence promoting 3DMRT performance differences between male and female humanities, but not STEM, students. Taken together, these observations suggest that the common statement “males have superior mental rotation abilities” simplifies a much more complex reality and might promote stereotypes which, in turn, might induce artefactual performance differences between females and males in such tasks. (shrink)

Este trabajo se propone estudiar las características de los paralogismos de composición y división (Retórica II 24.II, 1401a), de la consecuencia (Retórica II 24.VI, 1401b20-30) y de la causa aparente (Retórica II 24.VII, 1401b30-34), de modo de analizar si Eurípides los utiliza en el agón de Andrómaca de los versos 577 a 746 This paper intends to study the characteristics of paralogisms due to composition and division (Rhetoric II 24.II, 1401a), due to consequent (Rhetoric II 24.VI, 1401b20-30), and due to (...) false cause (Rhetoric II 24.VII, 1401b30-34), in order to analyze if Euripides uses them in the agon in Andromache (577-746). (shrink)

Há dois movimentos simultâneos no campo religioso brasileiro: um primeiro de distinção, multiplicação e rupturas; um segundo de relativa homogeneização. No campo cristão, o fenômeno mais visível é o da entrada maciça dos pentecostais, não só na arena religiosa em geral, mas nos seus pontos de alta visibilidade, especialmente populares. O significado da preferência dos pobres e do aparente trânsito do catolicismo ao pentecostalismo tende a representar o trânsito entre duas culturas: a tradicional católica afro-brasileira, e a cultura moderna de (...) escolha individual. A Nova Era, por exemplo, representa ao mesmo tempo a contudente negação de uma modernidade individualista, racional e dessacralizadora, a tentativa de recapitular, no que tem de global, espiritual, carnal e cósmico, o caminhar do homem para uma completude nunca atingida, porque nunca concluída. Assim, o meio religioso brasileiro, sobretudo popular, mas não exclusivamente, vive num certo clima espiritualista que parece compartilhado por várias mentalidades no Brasil. Pode-se então levantar a seguinte questão: como escapar, neste nosso olhar sobre as religiões dos brasileiros, de uma visão tão linearmente evolucionista, positivista na sua concepção, repressiva na sua política? (shrink)

This work is a self-contained elementary exposition of the theory of recursive functionals, that also includes a number of advanced results.

One of the key problems the field of Machine Consciousness is currently facing is the need to accurately assess the potential level of consciousness that an artificial agent might develop. This paper presents a novel artificial consciousness scale designed to provide a pragmatic and intuitive reference in the evaluation of MC implementations. The version of ConsScale described in this work provides a comprehensive evaluation mechanism which enables the estimation of the potential degree of consciousness of most of the existing artificial (...) implementations. This scale offers both well defined levels of artificial consciousness and a method to calculate an orientative numerical score . A set of architectural and cognitive criteria is considered for each level of the scale. This permits the definition of a cognitive framework in which MC implementations can be ranked according to their potential capability to reproduce functional synergies associated with consciousness. The probability of the implementations having any phenomenal states related to the assessed functional synergy is not specifically addressed in this paper; nevertheless, it could be thoughtfully discussed elsewhere. (shrink)

Emotional regulation, understood as the skills and strategies needed to influence and/or modify the emotional experiences, has a very remarkable implication within numerous emotional and behavioral disorders in childhood and adolescence. In recent years there has been a significant increase in research on emotional regulation, however, the results are still divergent in terms of differences in emotional regulation in relation to age and gender. This study aimed to assess emotional regulation in adolescents in relation to their age and gender. Two (...) hundred and fifty-four adolescents from eight schools in the Valencian Community and aged between 9 and 16 years participated in the study. The adolescents completed the Cognitive Emotion Regulation Questionnaire and the FEEL-KJ questionnaire. We analyzed the differences in emotional regulation strategies and a latent emotional regulation variable in two age groups (9 to 12 years and 13 to 16 years) and by gender. The results suggested that children and pre-adolescents in the 9-12 year group obtained lower scores in the emotional regulation strategies than the 13-16 year group. Girls reported higher scores on the use of emotional regulation strategies when experiencing sadness, anxiety and anger than boys, and on the overall average of regulation according to these specific emotions. Age, but not gender, had a major effect on scores for the latent variable of emotion regulation. An interaction effect between age and gender was identified in the latent emotion regulation scores. Girls tended to have higher scores than boys when they were younger and lower scores than boys when they were older. These results could be relevant for designing prevention and intervention programs for adolescents and at different ages. (shrink)

The article offers a complete vision of the problems tackled by and the fundamental theses defended by neoconstitutionalism (or neoconstitutionalisms), a current which tends to be transformed into a global reply, a new political culture that is present in all contemporary debates on legal and political philosophy. After characterising the model of the constitutional state, the author analyses four types of neoconstitutionalism that are developed from four different problems. In the first place he deals with neoconstitutionalism as a political philosophy (...) that considers the constitutional state as the best form of organising political society. He secondly analyses the contribution of neoconstitutionalism to the theoretical debate on the nature of norms and their interpretation which enables him to present it as a important renewal of the positivist theory of law. Thirdly the author gives the neoconstitutionalist reply in the conceptual debate about what should be understood by law and how to explain its relationship with morality. Fourthly, he presents neoconstitutionalist models of legal science. Finally, by way of conclusion, he sees to respond to the question whether neoconstitutionalism may be an alternative to the dialectic between iusnaturalism and positivism. (shrink)

La Economía del Bien Común (EBC) representa un modelo que, sin llegar a poner en cuestión la libertad de mercado, propone una visión más humana de la economía a través del bien común y la cooperación. Se trata de un modelo global e integral que se está desarrollando especialmente en el campo de la microeconomía. El objetivo de este trabajo es, una vez identificadas las características básicas del modelo del EBC, justificar sus fundamentos teóricos desde el punto de vista organizativo, (...) en particular, desde la teoría de los stakeholders. El Balance del Bien Común, como herramienta que sirve para implementar el modelo de la EBC, utilitza una matriz de doble entrada, que sirve para medir la aportación de las empresas en la consecución de los principios de los derechos humanos a través de su relación con los stakeholders.The Economy of the Common Good ecb represents a model that, without questioning market freedom, proposes a more humane vision of the economy, through the common good and cooperation. It is a global and comprehensive model that is being developed above all in the field of microeconomics. The objective of the work is, after identifying the basic characteristics of the ecb model, to justify its theoretical foundations from the organizational point of view, in particular, from Stakeholders’ Theory. The Balance of the Common Good, as a tool that serves to implement the ecb model, uses a double entry matrix, which serves to measure the contribution of companies to the achievement of human rights principles through their relationship with the stakeholders. (shrink)

El alcance “absoluto” y el carácter definitivo del sistema hegeliano han constituido un problema filosófico que algunos intérpretes han calificado como “insuperable”. Este alcance es interpretado por Charles Taylor como un espíritu absoluto que queda “encarnado” en los espíritus finitos, cuya libertad es condición de posibilidad para su realización. Robert Pippin se muestra insatisfecho con la interpretación del sujeto en tanto “receptor” del espíritu, puesto que dificulta el acceso a un concepto de “libertad” entendido como reconocimiento social. En el presente (...) trabajo se han presentado y comparado estas dos perspectivas y se ha concluido que, aunque ofrecen interpretaciones muy diversas sobre los textos hegelianos, sus tesis son en gran medida complementarias. Esta coincidencia permite una nueva consideración de los comentaristas tradicionales de Hegel. (shrink)

The progress in the machine consciousness research field has to be assessed in terms of the features demonstrated by the new models and implementations currently being designed. In this paper, we focus on the functional aspects of consciousness and propose the application of a revision of ConsScale — a biologically inspired scale for measuring cognitive development in artificial agents — in order to assess the cognitive capabilities of machine consciousness implementations. We argue that the progress in the implementation of consciousness (...) in artificial agents can be assessed by looking at how key cognitive abilities associated to consciousness are integrated within artificial systems. Specifically, we characterize ConsScale as a partially ordered set and propose a particular dependency hierarchy for cognitive skills. Associated to that hierarchy a graphical representation of the cognitive profile of an artificial agent is presented as a helpful analytic tool. The proposed evaluation schema is discussed and applied to a number of significant machine consciousness models and implementations. Finally, the possibility of generating qualia and phenomenological states in machines is discussed in the context of the proposed analysis. (shrink)

The accurate measurement of the level of consciousness of a creature remains a major scientific challenge, nevertheless a number of new accounts that attempt to address this problem have been proposed recently. In this paper we analyze the principles of these new measures of consciousness along with other classical approaches focusing on their applicability to Machine Consciousness (MC). Furthermore, we propose a set of requirements of what we think a suitable measure for MC should be, discussing the associated theoretical and (...) practical issues. Using the proposed requirements as a framework for the design of an integrative measure of consciousness, we explore the possibility of designing such a measure in the context of current state of the art in consciousness studies. (shrink)

It is well known that infinite minimal sets for continuous functions on the interval are Cantor sets; that is, compact zero dimensional metrizable sets without isolated points. On the other hand, it was proved in Alcaraz and Sanchis (Bifurcat Chaos 13:1665–1671, 2003) that infinite minimal sets for continuous functions on connected linearly ordered spaces enjoy the same properties as Cantor sets except that they can fail to be metrizable. However, no examples of such subsets have been known. In this (...) note we construct, in ZFC, ${2^{\mathfrak{c}}}$ non-metrizable infinite pairwise non-homeomorphic minimal sets on compact connected linearly ordered spaces. (shrink)

In this article we, given a free ultrafilter p on ω, consider the following classes of ultrafilters:(1) T(p) - the set of ultrafilters Rudin-Keisler equivalent to p,(2) S(p)={q ∈ ω*:∃ f ∈ ω ω , strictly increasing, such that q=f β (p)},(3) I(p) - the set of strong Rudin-Blass predecessors of p,(4) R(p) - the set of ultrafilters equivalent to p in the strong Rudin-Blass order,(5) P RB (p) - the set of Rudin-Blass predecessors of p, and(6) P RK (p) (...) - the set of Rudin-Keisler predecessors of p,and analyze relationships between them. We introduce the semi-P-points as those ultrafilters p ∈ ω* for which P RB (p)=P RK (p), and investigate their relations with P-points, weak-P-points and Q-points. In particular, we prove that for every semi-P-point p its α-th left power α p is a semi-P-point, and we prove that non-semi-P-points exist in ZFC. Further, we define an order ⊴ in T(p) by r⊴q if and only if r ∈ S(q). We prove that (S(p),⊴) is always downwards directed, (R(p),⊴) is always downwards and upwards directed, and (T(p),⊴) is linear if and only if p is selective.We also characterize rapid ultrafilters as those ultrafilters p ∈ ω* for which R(p)∖S(p) is a dense subset of ω*.A space X is M-pseudocompact (for ) if for every sequence (U n ) n < ω of disjoint open subsets of X, there are q ∈ M and x ∈ X such that x=q-lim (U n ); that is, for every neighborhood V of x. The P RK (p)-pseudocompact spaces were studied in [ST].In this article we analyze M-pseudocompactness when M is one of the classes S(p), R(p), T(p), I(p), P RB (p) and P RK (p). We prove that every Frolik space is S(p)-pseudocompact for every p ∈ ω*, and determine when a subspace with is M-pseudocompact. (shrink)

Through its focus on deep and experiential learning, service-learning has become increasingly popular within the business school curriculum. While a reciprocal dimension has been foundational to SL, the reciprocality that is emphasized in business ethics literature is often on the relationship between the service experience and the academic content, rather than reciprocal learning of the service providers and the recipients, let alone other stakeholders. Drawing on the notion of enriched reciprocal learning and on Aristotle’s typology of modes of knowing, we (...) revisit reciprocal learning by illustrating what kinds of learning occur for server and served in four SL projects from a project course in CSR, and emphasize the role of boundary spanners from the project organizations in making this reciprocal learning happen and translating the various types of student learning in ways that are useful for their organizations. We find that when boundary spanners are particularly engaged at making the projects impactful, they contribute to making the learning experiences of students, managers and sometimes other stakeholders useful, multidimensional, and ultimately rewarding. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Extractivist OntologiesLithium Mining and Anthropocene Imaginaries in Chile's Atacama DesertMauricio F. Collao Quevedo (bio)The term energy transition generally refers to efforts to switch from one energy system to another. In light of the current climate crisis, energy transition projects have sought to move societies away from their reliance on fossil fuels and toward a renewables-based energy system. Yet such projects have not been easy to undertake. As Marie (...) Forget and Vincent Bos point out, an energy system based on renewables requires a transformation of energy "regulatory frameworks, technical and organizational structures, geographic forms and network practices" (1). More specifically, current energy transition models rely on the expansion of lithium production, accompanying systems of private property rights, and complex logistical and technical strategies. This article examines the interplay between lithium extraction, national development, and Anthropocene imaginaries in Chile's Atacama Desert, arguing that the green brand of extractivism that characterizes the industry relies on elaborate institutional arrangements aimed at expanding and protecting extractivist ontological and epistemological regimes in the politically contested region. As such, struggles over lithium in Chile's Atacama region demonstrate the extent to which efforts to decolonize the Anthropocene and make possible non-extractive futures of collective survival must unfold on ontological grounds, against the consolidation of the Age of Man.Mining, Water Rights, and Indigenous Communities in the Atacama DesertAmong today's most promising energy sources and materials are sodium, copper, sulfur, nickel, cobalt, rare earth metals, and lithium. These [End Page 78] have become central to energy transition strategies and states seeking to attract investors for development (Lunde Seefeldt). As a report by the World Bank points out, demand for transition minerals like lithium, cobalt, and graphite could increase by 500% by 2050 ("Climate-Smart Mining"), highlighting the extent to which global energy transition efforts are counting on greater extraction of transition minerals and the expansion of extractive frontiers to previously unexplored or unexploited regions (Moore, Capitalism; World Bank Group). Lithium is at the center of this economic and technological shift toward green economies.Global lithium demand is growing rapidly, with investment and production rates growing significantly in recent years (Narins) and catching the attention of states (e.g., China) and corporate tech giants (e.g., Tesla) that are already trying to secure greater shares of the global market. The light metal's popularity is largely due to its internal chemistry, which meets many of the technical and practical requirements associated with green energy transition. Lithium is light, conducive, and energy-dense, which in the context of batteries means faster recharge, lower costs, and charge-holding abilities that make lithium-ion batteries more efficient than a nickel-metal hybrid equivalent (Perotti and Coviello). Because of this, lithium is increasingly being considered as promising for human development and survival as its energy predecessors, inspiring labels such as "white gold," "white petroleum," "the new copper," "the 21st century's petroleum," or the "new gasoline" of sustainability (Acuña and Tironi; Lunde Seefeldt; Voskoboynik and Andreucci).But the industry is not without its downsides. The negative impacts of lithium extraction in Chile's Atacama Desert have been challenged by local communities for whom the metal does not exist as a discrete entity that can be easily extracted from its socioecological context. For many of these communities, lithium is more than a transition metal found in an appropriable and materially heterogenous underground brine: it is an ontologically contested, socioecological entity that sustains and participates in complex webs of life-supporting, place-based, and more-than-human relations. Such accounts of the brine are radically incompatible with "official" state accounts of it, which are maintained through an institutional architecture that allows the ontological basis of the brine to be manipulated for extractive purposes by both corporate and state actors.In the following pages, I examine the ways in which Chile's legal and institutional arrangements, informed by imaginaries of green modernization, [End Page 79] create conditions under which extralocal actors can manipulate along extractivist lines the ontological ambiguity and material heterogeneity of lithium-containing brines in the salt flats of the Atacama Desert. Through an analysis of the ways in which lithium industries in the... (shrink)