Knowledge of diverse sexual motivations can have profound implications for our comprehension of the causes, correlations, and consequences of sexual behavior. This study had two objectives: on the one hand, to determine the different motives why young Spanish university students have sex and their relationship with different sociodemographic and psychosexual variables and sexual behavior; on the other hand, to review and improve the psychometric properties of the Sexual Motivations Scale and validate it in Spanish. Participants were 805 university students of (...) both sexes, aged between 18 and 26 years, who completed a battery of online questionnaires. Significant associations were found between young people's sexual motives, especially the motives of coping, peer pressure, and enhancement, the sociodemographic variables, sexual behavior, and psychosexual variables. Also, a new structure of the Sexual Motivations Scale was proposed, with the elimination of the factor of Self-Affirmation. The discussion highlights the relevance of the results obtained due to their implications in the promotion of sexual health, in addition to achieving the first instrument validated in Spanish for the evaluation of sexual motivations. (shrink)

Mathematical explanations are poorly understood. Although mathematicians seem to regularly suggest that some proofs are explanatory whereas others are not, none of the philosophical accounts of what such claims mean has become widely accepted. In this paper we explore Wilkenfeld’s suggestion that explanations are those sorts of things that generate understanding. By considering a basic model of human cognitive architecture, we suggest that existing accounts of mathematical explanation are all derivable consequences of Wilkenfeld’s ‘functional explanation’ proposal. We therefore argue that (...) the explanatory criteria offered by earlier accounts can all be thought of as features that make it more likely that a mathematical proof will generate understanding. On the functional account, features such as characterising properties, unification, and salience correlate with explanatoriness, but they do not define explanatoriness. (shrink)

The purpose of this paper is to identify the factors that affect the intention to use Big Data Applications in companies. Research into Big Data usage intention and adoption is scarce and much less from the perspective of the use of these techniques in companies. That is why this research focuses on analyzing the adoption of Big Data Applications by companies. Further to a review of the literature, it is proposed to use a UTAUT model as a starting model with (...) the update and incorporation of other variables such as resistance to use and perceived risk, and then to perform a neural network to predict this adoption. With respect to this non-parametric technique, we found that the multilayer perceptron model for the use of Big Data Applications in companies obtains higher AUC values, and a better confusion matrix. This paper is a pioneering study using this hybrid methodology on the intention to use Big Data Applications. The result of this research has important implications for the theory and practice of adopting Big Data Applications. (shrink)

In this chapter we use methods of corpus linguistics to investigate the ways in which mathematicians describe their work as explanatory in their research papers. We analyse use of the words explain/explanation (and various related words and expressions) in a large corpus of texts containing research papers in mathematics and in physical sciences, comparing this with their use in corpora of general, day-to-day English. We find that although mathematicians do use this family of words, such use is considerably less prevalent (...) in mathematics papers than in physics papers or in general English. Furthermore, we find that the proportion with which mathematicians use expressions related to ‘explaining why’ and ‘explaining how’ is significantly different to the equivalent proportion in physics and in general English. We discuss possible accounts for these differences. (shrink)

In this article, we report a study in which 109 research-active mathematicians were asked to judge the validity of a purported proof in undergraduate calculus. Significant results from our study were as follows: (a) there was substantial disagreement among mathematicians regarding whether the argument was a valid proof, (b) applied mathematicians were more likely than pure mathematicians to judge the argument valid, (c) participants who judged the argument invalid were more confident in their judgments than those who judged it valid, (...) and (d) participants who judged the argument valid usually did not change their judgment when presented with a reason raised by other mathematicians for why the proof should be judged invalid. These findings suggest that, contrary to some claims in the literature, there is not a single standard of validity among contemporary mathematicians. (shrink)

This paper presents an overview of the activation of background knowledge during text comprehension. We first review the cognitive processes involved in the activation of inferences during text comprehension, stressing the interaction between text and reader in the construction of situation models. Second, we review evidence for embodied theories of cognition and discuss how this new framework can inform our understanding of the nature and role of background knowledge. We then review the neuropsychological data on the activation of background knowledge (...) during text comprehension. Finally, the paper presents existing and future challenges in researching the role of background knowledge both at a conceptual and a methodological level. (shrink)

The issue of what constitutes a valid logical inference is a difficult question. At a minimum, we believe a permissible step in a proof must provide the reader with rational grounds to believe that the new step is a logically necessary consequence of previous assertions. However, this begs the question of what constitutes these rational grounds. Formalist accounts typically describe valid rules of inferences as those that can be found by applying one of the explicit rules of inference in the (...) formal system in which the proof is couched. However, philosophers of mathematics find such a description unhelpful because many inferences in the proofs that mathematicians actually produce cannot be expressed in a formal language, at least not without seriously distorting the semantic content of the inference (e.g., Larvor, 2012). In this chapter, we investigate mathematicians’ perceptions of a particular kind of inference in a particular setting. Specifically, we shed light on what types of graphical inferences mathematicians find permissible in a real analysis proof. Following Larvor (in press), we examine mathematicians’ reactions to metrical graphical inferences (i.e., inferences whose validity depends on the accuracy of the graph that was drawn and whose validity can be changed by minor deformations) and nonmetrical graphical inferences (i.e., inferences whose validity does not depend on a the accuracy of the graph and whose validity is not vulnerable to local deformations). The goal of this chapter is threefold. First, we demonstrate that most mathematicians reject metrical graphical inferences as impermissible in a real analysis proof. Second, we show that many mathematicians regard nonmetrical graphical inferences as permissible in a real analysis proofs. Third, we illustrate how mathematicians collectively disagree on the permissibility of nonmetrical inferences. (shrink)

The literature on mathematical explanation contains numerous examples of explanatory, and not so explanatory proofs. In this paper we report results of an empirical study aimed at investigating mathematicians’ notion of explanatoriness, and its relationship to accounts of mathematical explanation. Using a Comparative Judgement approach, we asked 38 mathematicians to assess the explanatory value of several proofs of the same proposition. We found an extremely high level of agreement among mathematicians, and some inconsistencies between their assessments and claims in the (...) literature regarding the explanatoriness of certain types of proofs. (shrink)

Two experiments are reported which investigate the factors that influence how persuaded mathematicians are by visual arguments. We demonstrate that if a visual argument is accompanied by a passage of text which describes the image, both research-active mathematicians and successful undergraduate mathematics students perceive it to be significantly more persuasive than if no text is given. We suggest that mathematicians’ epistemological concerns about supporting a claim using visual images are less prominent when the image is described in words. Finally we (...) suggest that empirical studies can make a useful contribution to our understanding of mathematical practice. (shrink)

Indagar sobre la esencia femenina es una tarea fundamental en nuestro tiempo. Sin embargo, es un esfuerzo que ha caído en el descrédito dado que se considera que no tiene en cuenta las diferencias individuales de las mujeres y contribuye a la sumisión femenina. Especialmente, a través de la formación de imágenes estereotipadas. En este artículo estudiaremos las conferencias sobre la mujer de Edith Stein, y algunos de sus estudios antropológicos, con la intención de aproximarnos a una comprensión que une (...) la esencia femenina con la acción y manifiesta su intrínseca unidad con la individualidad. Stein está convencida que toda mujer posee una triple vocación: a nivel humano, femenino e individual que se ha de desarrollar de manera integral y complementaria. Sin embargo, esto solo será posible si reconoce el orden metafísico –cristiano– del que depende su ser. (shrink)

This paper presents an overview of the activation of background knowledge during text comprehension. We first review the cognitive processes involved in the activation of inferences during text comprehension, stressing the interaction between text and reader in the construction of situation models. Second, we review evidence for embodied theories of cognition and discuss how this new framework can inform our understanding of the nature and role of background knowledge. We then review the neuropsychological data on the activation of background knowledge (...) during text comprehension. Finally, the paper presents existing and future challenges in researching the role of background knowledge both at a conceptual and a methodological level. (shrink)

The objective of this study is to analyze the role that peer support plays in the incidence relationships between sociometric popularity and general self-concept based on sociometer theory. A total of 676 randomly selected secondary school students from the Basque Country between 12 and 18 years of age participated voluntarily. All of them completed a sociometric questionnaire, the Family and Friends Support Questionnaire, and the Dimensional Self-concept Questionnaire. Several models of structural equations were tested. The results indicate that sociometric popularity (...) is linked to self-concept through the perceived social support of peers. These results are discussed within the framework of positive psychology and its practical implications in the school context. (shrink)

Mostramos el valor de los estudios biográficos para comprender los modos de ser sujetos en comunidades de diversa tolerancia hacia las prácticas homoeróticas. El texto reflexiona sobre la constitución de comunidades imaginarias a partir de trabajos etnográficos en comunidades indígenas; la participación de medios de comunicación; las injerencias de ONG sobre la comunidad zapoteca, en especial en Juchitán, tierra de tolerancias sexual hacia los muxes. Los muxes cumplen diversas tares sociales y culturales, son hombres con prácticas homoeróticas con otros hombres (...) que ni ellos ni el grupo social considera homosexuales. Los zapotecas forman parte de los grupos originarios del sur de México, tienen fuerte presencia en el país en su conjunto, desarrollan prácticas de amplia participación de la mujer, tanto así que algunos científicos sociales la han denominado cultura matriarcal. En el presente documento se discuten seis asuntos sobre la región a partir de argumentos generados por un miembro de amplio reconocimiento en la región de Juchitán: 1) la valoración del rol de la mujer al considerar que es un grupo con prácticas matriarcales; 2) el mito del paraíso de la izquierda; 3) el mito del paraíso gay; 4) la idea de un tercer sexo; 5) la idea de aceptación generalizada de los muxes; 6) la generalización del travestismo. Finalmente, se plantean algunos efectos de la intervención de los científicos sociales, de los medios de difusión masiva y de las ONG sobre la profesionalización del pueblo para dar respuesta a la diversidad de intereses de los externos a la comunidad. (shrink)

El libro E-physicalism - A Physicalist Theory of PhenomenalConsciousness presenta una teoría en el área de la metafísica de laconciencia fenomenal. Está basada en las convicciones de que la experienciasubjetiva -en el sentido de Nagel - es un fenómeno real,y de que alguna variante del fisicalismo debe ser verdadera.

Background:The high level of satisfaction of users of a health service is largely due to the fact that they receive excellent care from healthcare professionals. Compassionate care is an essential...

Adaptive optics are techniques used for processing the spatial resolution of astronomical images taken from large ground-based telescopes. In this work, computational results are presented for a modified curvature sensor, the tomographic pupil image wavefront sensor, which measures the turbulence of the atmosphere, expressed in terms of an expansion over Zernike polynomials. Convolutional neural networks are presented as an alternative to the TPI-WFS reconstruction. This technique is a machine learning model of the family of artificial neural networks, which are widely (...) known for its performance as modeling and prediction technique in complex systems. Results obtained from the reconstruction of the networks are compared with the TPI-WFS reconstruction by estimating errors and optical measurements. The reconstructed wavefronts from both techniques are compared for wavefronts of 153 Zernike modes. For this case, a detailed comparison and grid search to find the most suitable neural network is performed, searching between multi-layer perceptron, CNN and recurrent networks topologies. In general, the best network was a CNN trained for TPI-WFS reconstruction, achieving better performance than the reconstruction software from TPI-WFS in most of the turbulent profiles, but the most significant improvements were found for higher turbulent profiles that have the lowest r0 values. (shrink)

Introducción a la problemática jurídica actual, por R. M. Alsina.--La filosofía de la cultura, por Francisco Romero.--El sentido del derecho para la vida humana, por Juan Llambías de Azevedo.--El derecho como objeto y la ciencia del derecho, por E. R. Aftalión.--Las especies del saber jurídico (consideraciones de epistemología) por Manuel Río.--Posición cultural de las orientaciones políticas, por M. T. Ruiz Moreno.

La siempre fascínate escritura rulfiana continúa dialogando con el mundo. El así conocido “escritor de las letras mexicanas”, nos sigue ofreciendo un mar de posibilidades de acercamiento a otras áreas humanísticas entre las cuáles incluimos a la filosofía. Coincidentes en la época y en la geografía mexicana, Juan Rulfo y María Zambrano se encontraron en 1939. Exponentes ejemplares y creadores de nuevos caminos en la escritura literaria y filosófica, los exponemos como paralelos a través de dos piezas claves de (...) sus obras: Pedro Páramo y Los sueños y el tiempo. La antropología zambraniana viene propuesta como uno de estos senderos creativos y creadores de la búsqueda del propio ser y del sentido mismo del existir. Dicho pronunciamiento antropológico lo exponemos como perspectiva de lectura del viaje no sólo de Juan preciado, ansioso buscador de su padre, sino de todos los lectores de Rulfo que hemos tejido con sus letras —extractoras de sueños y productoras de anhelos— la frágil cuerda que sostiene la aventura del descubrir nuestro lugar en el oscuro pozo del mundo. Realismo mágico y Razón poética en armonía propositiva que revela el origen de ambos proveniente de la misma semilla del ser. Rulfo y Zambrano nos enseñan que hay encuentros más profundos y reales que aquellos sólo históricos. (shrink)

There are numerous studies that, from different perspectives, have dealt with the debate held in the Spanish Empire during the 16th century on the slavery of the American Indians, starring –among others– by Francisco de Vitoria and his disciples from the School of Salamanca, and also –outside the academic sphere– by Fray Bartolomé de las Casas and Juan Ginés de Sepúlveda. The purpose of this work is to study whether this debate made its mark in Spanish society. For this, (...) it is analyzed three theatrical pieces from the Golden Age signed by playwrights of the stature of Tirso de Molina, Lope de Vega and Pedro Calderón de Barca, who –given their enormous popularity– had the capacity to reach the wide audience that congregated in the corrals of comedies. Were these three writers influenced by the controversy over the Indians carried out, among other authors, by Vitoria, Las Casas and Sepúlveda? Did they fully grasp in their works the subtle debate that Vitoria, Las Casas and Sepúlveda maintained when they interpreted Aristotelian arguments on slavery and the consequences that derived from them in terms of the possibility of enslaving or not the Indians? (shrink)

Ce livre résume une recherche que l'auteur a menée pendant de très longues années, et qu'il a voulu exposer comme élargissement de l'œuvre de William James, fondateur de la philosophie et de la psychologie américaines.

Este libro quiere desarrollar un pensamiento que, poniéndose del lado de las víctimas y rechazando la salida nihilista, abogue por la construcción del futuro sobre la herencia de la racionalidad griega y del cristianismo, sin renunciar tampoco a lo que pueda ser heredado de lo mejor de la tradición ilustrada, convencido de que sólo un nuevo encuentro entre fe y razón puede devolver al hombre la confianza en sí mismo.