The problem of knowledge evolution has received considerable attention over the years. Mainly, the study of the dynamics of knowledge has been addressed in the area of Belief Revision, a field emerging as the convergence of the efforts in Philosophy, Logic, and more recently Computer Science, where research efforts usually involve “flat” knowledge bases where there is no additional information about the formulas stored in it. Even when this may be a good fit for particular applications, in many real-world scenarios (...) different information items may be attached to formulas. For instance, when the reliability of the source of the piece of information is attached to it as a measure of some quality (e.g., strength) of the piece of information itself, or when some characteristic informs us on the desirability of the item (e.g., the potential benefit that could be obtained from it). If this type of information is available, we can use it to guide how the belief base is to be modified when new information arrives. In this work, we present a novel approach to the contraction of knowledge bases where formulas have values attached that measure some quality linked to those formulas, exploiting it to define their desirability, and uses such desirability to define which formulas need to be removed to solve conflicts. In this context, we introduce a set of properties for contraction operators by extending classic approaches. We also show how the local treatment of minimal conflicts can induce some counter-intuitive contractions, and we present a way to avoid them by considering optimal resolutions of conflicts using the additional information encoded. We show how the proposed formalization captures any contraction that is optimal under a set of features. Finally, we present a refinement based on the identification of related minimal conflicts that performs contraction in optimal ways without looking into the entire knowledge base. The approach is based on the use of the accrual of beliefs where several formulas collaboratively use their respective values to prevail in the resolution of conflicts. (shrink)

It has become almost commonplace to recognise that teaching is an embodied practice. Most analyses of teaching as embodied practice focus on the embodied nature of the teacher as subject. Here, we use Butler's concept of performativity to analyse the reiterated acts that are intelligible as—performatively constitute—teaching, rather of the teacher as subject. We suggest that this simultaneously helps explain the persistence of teaching as a narrow repertoire of actions recognisable as ‘teaching’, and the policing of conformity to teaching thus (...) embodied. However, like performatively accomplished subjectivity, this repertoire is unstable and ambiguous, and thus open to change and disruption. Moreover, teacher subjectivities may lead them to mobilise these possibilities of disruption. (shrink)

La pandemia del Covid-19 provocó un cambio forzoso en la enseñanza universitaria, tanto a nivel metodológico como práctico. La Universidad de Granada ha creado un triple modelo basado en tres escenarios diferentes: virtual (e-learning), semipresencial (b-learning) y presencial. Los objetivos que pretendemos alcanzar consisten en presentar, analizar y difundir este modelo pedagógico creado para hacer frente a los desafíos futuros que puedan surgir. Para el proceso de análisis, se evaluarán la experiencia en el aula y los resultados obtenidos durante los (...) tres cursos académicos en los que se ha implantado este nuevo modelo en uno o varios de sus escenarios. (shrink)

Feature selection is a widely studied technique whose goal is to reduce the dimensionality of the problem by removing irrelevant features. It has multiple benefits, such as improved efficacy, efficiency and interpretability of almost any type of machine learning model. Feature selection techniques may be divided into three main categories, depending on the process used to remove the features known as Filter, Wrapper and Embedded. Embedded methods are usually the preferred feature selection method that efficiently obtains a selection of the (...) most relevant features of the model. However, not all models support an embedded feature selection that forces the use of a different method, reducing the efficiency and reliability of the selection. Neural networks are an example of a model that does not support embedded feature selection. As neural networks have shown to provide remarkable results in multiple scenarios such as classification and regression, sometimes in an ensemble with a model that includes an embedded feature selection, we attempt to embed a feature selection process with a general-purpose methodology. In this work, we propose a novel general-purpose layer for neural networks that removes the influence of irrelevant features. The Feature-Aware Drop Layer is included at the top of the neural network and trained during the backpropagation process without any additional parameters. Our methodology is tested with 17 datasets for classification and regression tasks, including data from different fields such as Health, Economic and Environment, among others. The results show remarkable improvements compared to three different feature selection approaches, with reliable, efficient and effective results. (shrink)

The concept of measuring inconsistency in information was developed by John Grant in a 1978 paper in the context of first-order logic. For more than 20 years very little was done in this area until in the early 2000s a number of AI researchers started to formulate new inconsistency measures primarily in the context of propositional logic knowledge bases. The aim of this volume is to survey what has been done so far, to expand inconsistency measurement to other formalisms, to (...) connect it with related topics, and to provide ideas for further research in a topic that is particularly relevant now in view of the many inconsistencies in the massive amount of information available. The book contains 11 chapters. The first chapter, by John Grant, gives his original motivation for starting this field, explains why it was formulated in a highly mathematical manner, presents important material that was omitted from the original paper, and provides ideas about the use of dimensions in measuring inconsistency. The second chapter, by Matthias Thimm, is a survey that covers most of the research on inconsistency measures up to 2017. The other 9 chapters, all by experts either in inconsistency measures, or in the topic under consideration, or both, connect inconsistency measures with argumentation, disjunctive logic programming, fuzzy logic systems, modal logics, multiset representation, paraconsistent consequence, probabilistic logic, relational databases, and spatio-temporal databases."-- back cover. (shrink)

Background Voluntary post-mortem donation to science (PDS) is the most appropriate source for body dissection in medical education and training, and highly useful for biomedical research. In Mexico, unclaimed bodies are no longer a legal source, but PDS is legally possible, although scarcely facilitated, and mostly ignored by the general population. Therefore, we aimed to evaluate the attitude and willingness for PDS and to identify a sociodemographic profile of people with willingness toward PDS. Methods A validated on-line survey was distributed (...) by the convenience method via the social networks of a Catholicism-inspired, private university in northern Mexico. Frequency analyses of all variables and coded free comments were complemented with association studies. Results Although the responder cohort (n = 143) was too small and biased to be representative of the university community (n = 13,500), willingness to post-mortem organ donation was 90.7% and to PDS 70.7%. In this cohort, PDS willingness had the strongest association with mature age (> 40 years old; P, 0.0008). Among young adults, willingness to PDS was the lowest among volunteers from technical and business schools and the highest among those from the social sciences (P, 0.009). Respondents from the social sciences were also the most consistent between attitude and behavior with respect to organ donation. A free comment option revealed respondents were interested in the unusual taboo topic. Conclusions A small, but sufficiently large proportion expressed willingness toward PDS. In our university cohort, which was biased in higher education and altruism, mature age and social interest were associated with PDS willingness. (shrink)

In this paper I introduce the theory of gift giving as a possible means to reconcile the contradictions inherent in accountability measures of ‘faculty productivity’ in the American university. In this paper I sketch the theory of gift economies to show how, given the historical ideals that characterize the faculty‐student relationship, a theory of gift giving could help us better judge the labor of the faculty. I suggest that it is the relational character of teaching that frustrates accountability measures and (...) that perhaps if viewed as a gift economy—and in particular an economy with ‘reproductive’ ends—we could better grasp the effectiveness of these relationships. (shrink)

We study the intersection number of families of tall ideals. We show that the intersection number of the class of analytic P-ideals is equal to the bounding number ${\mathfrak{b}}$ , the intersection number of the class of all meager ideals is equal to ${\mathfrak{h}}$ and the intersection number of the class of all F σ ideals is between ${\mathfrak{h}}$ and ${\mathfrak{b}}$ , consistently different from both.

The aims of this research were twofold: first, to compare the levels of organisational harmony between family and non-family firms and, second, to study the influence of organisational harmony on family firms’ performance (profitability, longevity and group cohesion). Starting from a definition of organisational harmony as a value and considering the importance of the management of organisational values, we use the main topics indicated by the general literature (organisational climate, trust and participation) to analyse organisational harmony, as well as three (...) other topics for performance (profitability, survival and group cohesion). Results indicate that family firms have higher levels of these three qualities than non-family firms, and that the levels of trust, participation and organisational climate have a positive and significant influence on the performance of family firms. These results can be understood as a consequence of the influence of family social capital on organisational social capital and so on the performance of family businesses. From the perspective of institutionalism, the higher levels of harmony existing in family businesses are a reflection of the pressures that the owning family as an institution exercises on the organisational social capital in its companies. (shrink)

Abstract. The notion of similarity has been studied in many areas of Computer Science; in a general sense, this concept is defined to provide a measure of the semantic equivalence between two pieces of knowledge, expressing how “close” their meaning can be regarded. In this work, we study similarity as a tool useful to improve the representation of arguments, the interpretation of the relations between arguments, and the semantic evaluation associated with the arguments in the argumentative process. In this direction, (...) we present a novel mechanism to determine the similarity between two arguments based on descriptors representing particular aspects associated with these arguments. This mechanism involves a comparison process influenced by the context in which the process develops, where this context provides the relevant aspects that need to be analyzed in the application domain. Then, we use this similarity measure as a quantity to compute the result of attacks and supports in the argumentation process. These valuations, applied to a Bipolar Argumentation Frameworks, allowed us to refine the argument relations, providing the tools to establish a family of new argumentation semantics that considers the similarity between arguments as a crucial part for the argumentation process. (shrink)

Using narrative descriptions of the author's own lived-experience of her ethnic heritage, Martinez offers a systematic interrogation of the social and cultural norms by which certain aspects of her Mexican-American cultural heritage are both retained and lost over generations of assimilation. Combining semiotic and existential phenomenology with Chicana feminism, the author charts new terrain where anti-racist, anti-sexist, and anti-homophobic work may be pursued.

Neuroconstructivism postulates the progressive complexity of mental representation over the course of cognitive development and the role of the graphic representation of movement in the transformation of mental schemas, cognitive flexibility, and representational complexity. This study aims to: understand children’s resources in the drawing of movement ; and verify whether there are differences in the graphic representation of movement as an indicator of cognitive flexibility. The participants were N = 240 children aged 5–8 years; 1,440 drawings were collected representing 2,880 (...) characters from six stories. The analysis consisted: data quality control, using the kappa coefficient, and Generalizability Theory to test the instrument’s validity and reliability; Multivariate General Analysis and Mixed Linear Analysis of the factors ; Multivariate General Analysis of the graphic components: categories and microcategories, as well as the elements that make up the macrocategories: “Static,” “Indication,” and “Movement”; and calculation of the generalizability coefficient. The results show that: age best explains variability, with a high effect size across all components, thus increasing its complexity and at ages 6 and 7, “Indication” appears as a modulator of “Static” toward “Movement”. The generalizability coefficient is optimal. It is concluded that changes in the initial graphic representation of movement may interactively transform mental representation, thus increasing cognitive flexibility and prompting teaching applications to optimize such changes. (shrink)

Introduction: The Binge Eating Scale (BES) is a widely-used self-report questionnaire to identify compulsive eaters. However, research on the dimensions and psychometric properties of the BES is limited. Objective: The aim of this study was to examine the properties of the Spanish version of the BES. Method: Confirmatory Factor Analyses (CFAs) were carried out to verify the BES factor structure in a sample of Spanish college students (N = 428, 75.7% women; age range = 18–30). An invariance measurement routine was (...) carried out across sexes, the latent means were compared, and estimates of reliability and convergent and discriminant validity were presented. Results: A one-factor model fit the data best and was also equivalent between sexes. The scalar invariance model showed statistically significant differences across sexes, with a higher prevalence in women. Regarding reliability, the results were excellent. Finally, high statistically significant correlations were obtained with other measures of binge eating (BE), food addiction, impulsivity, binge drinking, and body mass index (BMI). Conclusions: The Spanish 16-item BES is a valid and reliable scale to evaluate BE in the youth population. (shrink)

The strict lockdown experienced in Spain during March–June 2020 as a consequence of the COVID-19 crisis has led to strong negative emotions. Music can contribute to enhancing wellbeing, but the extent of this effect may be modulated by both personal and context-related variables. This study aimed to analyze the impact of the two types of variables on the perceived efficacy of musical behaviors to fulfill adults’ emotional wellbeing-related goals during the lockdown established in Spain. Personal variables included age, gender, musical (...) training, personality, resilience, and perception of music’s importance. Contextual variables referred to living in a region with a high COVID-19 impact, perception of belonging to a risk group, being alone, having caring responsibilities during confinement, and amount of time of music listening as compared to prior to the crisis. The study was conducted retrospectively during August–December 2020, when the strict lockdown was over in Spain. An online survey was disseminated among the general population and groups of musicians, and the answers of 507 adults were analyzed. Only personal, but not COVID-19 context-related variables, showed an impact on music’s efficacy. The youngest age group of adults and those with musical training reported the highest efficacy of music for wellbeing enhancement, and music’s importance was found to be the main significant predictor of music’s perceived efficacy. Our findings suggest that the people who have been reported to be emotionally more vulnerable during the lockdown, due to either a strong impact on their daily lives or their lower resilience, perceive a higher benefit from musical behaviors. Being musically trained, even for a small number of years, also leads to a perception of higher efficacy of music for the achievement of emotional wellbeing goals. However, this effect is explained by the musically trained individuals’ higher perception of music’s importance. Although musical behaviors can be generally considered as important for wellbeing enhancement, our study highlights who are the potential individuals who could benefit the most from music-related activities for obtaining better levels of wellbeing, at least within the current context of the COVID-19 crisis. (shrink)

It has become almost commonplace to recognise that teaching is an embodied practice. Most analyses of teaching as embodied practice focus on the embodied nature of the teacher as subject. Here, we use Butler's concept of performativity to analyse the reiterated acts that are intelligible as—performatively constitute—teaching, rather of the teacher as subject. We suggest that this simultaneously helps explain the persistence of teaching as a narrow repertoire of actions recognisable as ‘teaching’, and the policing of conformity to teaching thus (...) embodied. However, like performatively accomplished subjectivity, this repertoire is unstable and ambiguous, and thus open to change and disruption. Moreover, teacher subjectivities may lead them to mobilise these possibilities of disruption. (shrink)

Quotatives have been studied extensively in the language of teenagers in recent years as they present distinctive features of their own that make them different in part from those used by adults in mainstream English and Spanish. However, zero quoting has not received all the attention it certainly deserves as it has not been fully probed in terms of its discourse and pragmatic functions. This corpus-based study is focused on the strategies used by British and Spanish teenagers to introduce constructed (...) dialogue without the use of a particular marked and an explicit quotative form. The results indicate that the absence of quotatives is not casual; there are some linguistic contexts that favor the existence of this type of quotatives, namely non-lexicalized and sound words, and the dramatic recreation of situations where the speaker perform new voices. The lack of quotatives also serves to involve the interlocutor more directly and in a higher degree in what is being told, and gives more self-assurance to the narrator. These tendencies apply equally to English and Spanish. The study of null/zero quotatives should go then beyond the simple reporting of an absence of a verbal mark, and should address pragmatic and interpersonal factors closely associated with the context where they occur and with the speaker’s attitude and communicative intention and purpose. (shrink)

Natural Law is considered by many jurists an ambiguous concept. In this article we offer a concise history of ancient and mediaeval Natural Law as well as how it is present in the modern Bills of Human Rights. In the Natural Law it is convenient to distinguish what is caducous from that still valid.

This article explores the question of how scientific uncertainty can be managed in medical decision making using the Advisory Committee on Immunization Practices as a case study. It concludes that where a high degree of technical consensus exists about the evidence and data, decision makers act according to a clear decision rule. If a high degree of technical consensus does not exist and uncertainty abounds, the decision will be based on a variety of criteria, including readily available resources, decision-process constraints, (...) and the available knowledge base, among other things. Decision makers employ a variety of heuristic devices and techniques, thereby employing a pragmatic approach to uncertainty in medical decision making. The article concludes with recommendations for managing scientific uncertainty in medical decision making. (shrink)

En 1968 Raquel Carson comenzaba una revolución en el pensamiento, quizá una de las de mayor peso en la actualidad. En su libro "La primavera silenciosa" acusaba del deterioro ambiental al poder ilimitado del ser humano. La creencia surgida en la modernidad de que todo lo que el hombre decidía era en sí mismo lo mejor por haber sido fruto de una voluntad libérrima, daba primacía y legitimidad absoluta a su acción sobre la naturaleza. Surgieron con gran fuerza numerosos grupos (...) ecologistas que adoptaron un pensamiento que responde al nombre de "ecología profunda" o "Deep Ecology" descrito por primera vez por Arme Naess en un artículo publicado por la revista Inquiry y titulado "The Shallow and the Deep, Long Range Ecology Movement". Los principios que proponía este movimiento (Naess 1984) pueden ser resumidos en ocho grandes puntos: 1) la vida de los seres no humanos es un valor en sí: 2) la riqueza y la diversidad de estas formas de vida son también valores en sí; 3) los seres humanos no pueden intervenir de manera destructiva en la vida; 4) a este respecto, la intervención humana actual es eminentemente excesiva; 5) por consiguiente, las reglas de juego deben ser radicalmente modificadas; 6) esta modificación radical debe hacerse tanto a nivel de las estructuras económicas como de las estructuras ideológicas y culturales; 7) a nivel ideológico, el cambio principal consiste en apreciar más la calidad de la vida que el goce de los bienes materiales; 8) las personas que acepten estos principios tienen la obligación de contribuir, directa o indirectamente a la realización de los cambios fundamentales que aquellos implican. (shrink)

We present a novel argumentation-based method for finding and analyzing communities in social media on the Web, where a community is regarded as a set of supported opinions that might be in conflict. Based on their stance, we identify argumentative coalitions to define them; then, we apply a similarity-based evaluation method over the set of arguments in the coalition to determine the level of cohesion inherent to each community, classifying them appropriately. Introducing conflict points and attacks between coalitions based on (...) argumentative (dis)similarities to model the interaction between communities leads to considering a meta-argumentation framework where the set of coalitions plays the role of the set of arguments and where the attack relation between the coalitions is assigned a particular strength which is inherited from the arguments belonging to the coalition. Various semantics are introduced to consider attacks’ strength to particularize the effect of the new perspective. Finally, we analyze a case study where all the elements of the formal construction of the formalism are exercised. (shrink)

Metazoan genomes contain thousands of protein‐coding and non‐coding RNA genes, most of which are differentially expressed, i.e., at different locations, at different times during development, or in response to environmental signals. Differential gene expression is achieved through complex regulatory networks that are controlled in part by two types of trans‐regulators: transcription factors (TFs) and microRNAs (miRNAs). TFs bind to cis‐regulatory DNA elements that are often located in or near their target genes, while miRNAs hybridize to cis‐regulatory RNA elements mostly located (...) in the 3′ untranslated region of their target mRNAs. Here, we describe how these trans‐regulators interact with each other in the context of gene regulatory networks to coordinate gene expression at the genome‐scale level, and discuss future challenges of integrating these networks with other types of functional networks. (shrink)

Forgiveness seeking after a relational transgression is an important aspect of relational repair from an interpersonal perspective, although it has received much less attention than the process of granting forgiveness. This research focuses on the victim's perspective of the transgressor's behaviors and how they are related to forgiveness and offense characteristics. This paper proposes a multidimensional concept of seeking forgiveness that includes four dimensions: apologies, restorative action, relational caring behaviors, and diverting behaviors. A questionnaire for assessing these dimensions was developed (...) and tested with a general population sample of 450 subjects. Participants recalled a specific offense and then answered a questionnaire about the perceived usefulness of different forgiveness-seeking behaviors, a forgiveness inventory, and several questions regarding the characteristics of the offense. Our results support the four-factor structure of the questionnaire. As the perceived intentionality of the offense increases, behaviors that are directly related to the transgression, such as apologies and restorative actions, are experienced as less useful for forgiveness. The more hurtful the offense, the less useful the diverting behaviors are. Behavior such as apologies and restorative action are related to a lower motivation for revenge, while all forgiveness-seeking behaviors are related to an increase in feelings of benevolence toward the offender. (shrink)

For the period 2015–2019 and based on a Spanish sample of 145 listed companies, this paper provides insights into how narcissistic chief executive officers (CEOs) influence the proportion of women in top management teams (TMTs). As a further analysis and in line with social psychology and upper echelons theories, we study whether the power and gender of a CEO and the female proportion in the firm's board moderate the relationship. Our results reveal that narcissistic CEOs are less likely to support (...) women in TMTs, confirming that CEO personality traits influence team structure. Further results suggest that this aversion increases as the CEO's power grows and is a woman, and when female proportion in board decreases. The results have an impact on the gender equality goal, demonstrating that the behavior of women toward promoting gender equality in TMTs depends both on the specific position of women in the firm's hierarchy and on their personal psychological attributes. We find that women directors support social identity values and that narcissistic female CEOs act like queen bees. (shrink)

Estamos siendo testigos de grandes avances tecnológicos y, a la vez, de grandes desastres naturales y sociales que nos impulsan a plantearnos cuáles son las causas últimas de la degradación natural ecológica. El abuso en el uso de los recursos tal vez pueda tener relación con el abuso en el uso de la tecnología; incluso ser causa de la gran desigualdad social en el acceso a bienes necesarios para llevar una vida digna, raíz de muchos conflictos sociales. La ecología es (...) una disciplina científica, pero cada vez es más habitual ampararse en este término para lanzar opiniones o generar un debate de ideologías de índole catastrofista que no hacen más que generar malestar social sin visos de solución práctica. Las reflexiones sobre la ecología nos parece que deben plantearse de una forma interdisciplinar, pero no de cualquier manera, sino respetando el estatuto epistemológico de cada área del saber. Cuidar el método científico, en el ámbito científico; el filosófico, en el suyo propio; e incluso el teológico. El tema de nuestra relación con la naturaleza nos afecta tan íntimamente que casi todas las áreas del conocimiento pueden decir algo al respecto. En el presente trabajo comenzamos ese diálogo y presentamos las ideas básicas desde las que se podría plantear un modo de actuar humano respetuoso para con los demás hombres y los demás seres de la naturaleza, que mejore nuestro modo de vivir y evite más daños y perjuicios. A esto nos referimos cuando hablamos de “ética ambiental”. La ecología nos toca de cerca porque tiene que ver con el modo de habitar nuestro mundo y las relaciones que tenemos con los demás seres vivos y no vivos. A fin de poder delinear las líneas principales de una ética orientada al medioambiente es preciso, en primer lugar, conocer los datos científicos sobre el tema; en segundo lugar, analizar los problemas graves que se están detectando y comprender que muchas de sus causas todavía son desconocidas y precisan de un estudio más detenido; finalmente, es conveniente revisar las alternativas de solución que nos orienten a llevar una vida mejor, donde se sugieran modos de obrar que no nos cierren el camino hacia ese destino común que tenemos como seres humanos, y que integre al resto de criaturas porque no somos los únicos seres vivientes del planeta. La propuesta de una “ética ambiental” apunta a considerar un verdadero “ecologismo solidario”. (shrink)