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.

La tecnología espacial y sus productos derivados se han convertido en un elemento fundamental para la vida y para la supervivencia y prosperidad de las sociedades desarrolladas y poseen un peso creciente en aquellas otras que están en vías de desarrollo. Esta dependencia del espacio irá, además, reforzándose progresivamente en los próximos años. Esta realidad, unida a los riesgos y desafíos asociados a fenómenos naturales, accidentes no provocados, o bien, a acciones intencionadas realizadas por otros actores en el espacio, trae (...) como consecuencia la necesidad de protección de nuestras actividades en el espacio para garantizar un acceso continuado; de no hacerlo, el impacto en el normal desarrollo de nuestras vidas y en el planeamiento y conducción de operaciones militares sería muy significativo. En general, las Fuerzas Armadas españolas disponen de un nivel muy aceptable de capacidades espaciales para afrontar los entornos operativos del presente. Sin embargo, el espacio ultraterrestre se encuentra cada vez más congestionado y disputado y, en este contexto, no existe la misma disponibilidad de capacidades necesarias para implementar un control efectivo del espacio que permita contrarrestar actividades maliciosas de potenciales adversarios, aspecto en el que resulta imprescindible avanzar. (shrink)

The numerical study of a glycolytic model formed by a system of three delay differential equations reveals a multiplicity of stable coexisting states: birhythmicity, trirhythmicity, hard excitation and quasiperiodic with chaotic regimes. For different initial functions in the phase space one may observe the coexistence of two different quasiperiodic motions, the existence of a stable steady state with a stable torus, and the existence of a strange attractor with different stable regimes (chaos with torus, chaos with bursting motion, and chaos (...) with different periodic regimes). For a single range of the control parameter values our system may exhibit different bifurcation diagrams: in one case a Feigenbaum route to chaos coexists with a finite number of successive periodic bifurcations, in other conditions it is possible to observe the coexistence of two quasiperiodicity routes to chaos. These studies were obtained both at constant input flux and under forcing conditions. (shrink)

We analyzed a sample of 356 forms containing information that Colorado law legally requires both licensed and unlicensed therapists to disclose to clients. The majority of forms contained the legally mandated information; fewer forms contained ethically desirable information. The average readability grade level was 15.74, corresponding to upper-level college, and 63.9% of the forms reached the highest (most difficult) readability grade of 17 +. Therapists are obeying the law, but do not appear to be taking advantage of the opportunity to (...) provide their clients useful information in an accessible way. (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)

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)

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)

El proceso educativo sufrió un drástico cambio debido a la pandemia que padecimos a nivel mundial, tuvimos que aprender a usar las herramientas tecnológicas en la enseñanza y en el aprendizaje. Por lo que siguiendo esta tendencia planteamos la utilización de la aplicación “Física M-Lab” en su primera versión para la enseñanza de la cinemática.Como estamos en el campo de las ciencias sociales, utilizamos el diseño cuasiexperimental que nos permitió concluir en que los aprendizajes mejoraron significativamente.

The aim of this article is to apply the concept of synergy to the workings of memory in Alex Miller’s Landscape of Farewell by focusing on the relationship between its two main characters, M...

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)

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.

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)

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)

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)

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.