In this contribution, we use the connection between stable polynomials and orthogonal polynomials on the real line to construct sequences of Hurwitz polynomials that are robustly stable in terms of several uncertain parameters. These sequences are constructed by using properties of orthogonal polynomials, such as the well-known three-term recurrence relation, as well as by considering linear combinations of two orthogonal polynomials with consecutive degree. Some examples are presented.

Background: Coronavirus disease 2019 has resulted in an increase in known risk factors for mental health problems. Mexico adopted lockdown and physical distancing as a containment strategy with potential consequences on day to day life, such as social isolation, loss of income and loneliness that can have important consequences in terms of mental health.Objective: We aimed to examine the effect of the initial phases of the COVID-19 pandemic on psychological distress, well-being and perceived physical health among Mexican-base respondents and to (...) examine whether coping strategies would play a potential intermediating role in relation to these variables. Under the Existential Positive Psychology perspective, an emphasis was made on meaning-centered coping.Methods: A cross-sectional study was conducted between April 30 and June 16th 2020 among 604 Mexicans-base respondents of which 471 were women and 132 men. Data was collected by using online questionnaires. Psychological distress was measured using the Depression, Anxiety, and Stress Scale. The Brief COPE Inventory was used to assess problem-focused and emotion-focused coping strategies. We also used the Meaning-Centered Coping Scale. PERMA-Profiler was used to assess well-being, perceived physical health, and loneliness. Profiler and Descriptive analyses and bivariate linear regression were performed to examine the association of variables.Results: 45.9% of the participants reported moderate to extremely severe psychological distress. Our results demonstrate that problem-focused and emotion-focused coping were positively related to psychological distress, whereas meaning-centered coping was negatively associated with distress. Furthermore, psychological distress played a potential negative role in the perceived physical health, while meaning-centered coping and well-being buffered the negative influence of psychological distress on perceived physical health (completely standardized indirect effect = –0.01, SE: 0.012, 95% CI [−0.065; −0.017].Conclusion: Meaning-centered coping was found to suppress the negative influence of psychological distress on sensation of decreased physical health corroborating the critical role of meaning in life in promoting well-being. Future studies can further examine the value of the critical role of meaning in life in promoting well-being as a protective factor against severe distress during traumatic events. Findings of this study can be used to orient policies and interventions aimed to alleviate suffering in the midst of the COVID-19 pandemic. (shrink)

Reseña del libro: Miguel Saralegui, The Politics of Time. Introduction to Carl Schmitt’sPolitical Thought, Cantabria University Press, Santander, 2021, 273 pp.

In this essay, through the concepts of cosmotechnics and technodiversity proposed by Yuk Hui, I present an exploratory sketch regarding the search for a Mesoamerican cosmotechnics from the perspective of the deep relationship that pre-Hispanic cultures have maintained with maize since ancient times. I consider that this relationship expresses a particular Mesoamerican cosmotechnics that—in Hui’s terms—manages to unify “the cosmic order and the moral order through technical activities” in these societies, even to the present day. Similarly, I argue that the (...) biological, agricultural, and gastronomic techniques—such as the milpa, chinampas, and nixtamalization—which have historically been woven around maize are an example of technodiversity that has persisted and withstood the onslaught of the capitalist logic. Finally, I affirm that this cosmotechnics has the potential to be configured as a cosmopolitics that must first overcome the obstacles of nationalist and identity discourses that became prevalent in post-revolutionary Mexico through the indigenist turn, and that are currently configured around the defence of traditional maize against the attempts to introduce its transgenic equivalent in recent decades. (shrink)

The main thesis of this dissertation is set out in its very title, and to prove it will be necessary to eliminate the usual negative or melodramatic meaning of the two concepts that appear there and take them rather as the two extremes of the dialectical process of redefining the sociopersonal consciousness. In accordance with this, any catastrophe implies the violent breakup of the normal conditions of existence due to a natural or human factor whose direct consequences each one must (...) understand and overcome on the triple ontological, social, and psychological determinations of the self. For its part, tragedy stands for the phase of critical and reflective integration that follows the catastrophe, which goes a lot beyond the sheer negativity of sorrow and even death, since even if the person or the people carried away by the catastrophe die, others will be able to make the most of that and the sociopersonal consciousness will be rearticulated. Of course, this implies that the self at issue is not only the individual one, so that other members of the lifeworld must be considered for the phenomenon to reveal a new or critical sense of existence beyond any previous approach to it. Thus, although there is an undeniably negativity throughout, it aims at a deeper level of comprehension of existence, which finally implicates that catastrophe is contextualized in a concrete cultural framework and not only as a sudden unsettlement and that tragedy is accordingly conceived as a philosophical tool more than as a literary genre that deals with the cruelty of fate. To get its aims, the dissertation will be divided into three sections of variable length: in the first one it will be analysed the experience and sense of catastrophe; in the second one, that of tragedy; in the third one, it will briefly be shown why understanding the nexus of both phenomena is axial for the current intellectual dynamics. (shrink)

The phenotype of some spontaneous mutations in Drosophila can be modified by mutations at unlinked loci. The affected alleles are caused by the insertion of retroviral transposable elements. The idiosyncratic functional and structural properties of these elements play a key role in determining the expression characteristics of the genes into which they are inserted. These phenotypes are reversed or intensified by the allelic state of suppressor and enhancer loci through changes in the transcriptional properties of the transposable elements.

Datos completos del libro reseñado:Bartolomé de Medina. El tratado “De dominio” en la Escuela de Salamanca, vol. III: Bartolomé de Medina, De dominio/Sobre el dominio, ed. Augusto Sarmiento, Colección de Pensamiento Medieval y Renacentista n. 173, Pamplona, Eunsa, 2017, 251 pp., ISBN: 9788431331795.

Two stages of the creative writing process were characterized through mobile scalp electroencephalography in a 16-week creative writing workshop. Portable dry EEG systems with synchronized head acceleration, video recordings, and journal entries, recorded mobile brain-body activity of Spanish heritage students. Each student's brain-body activity was recorded as they experienced spaces in Houston, Texas, and while they worked on their creative texts. We used Generalized Partial Directed Coherence to compare the functional connectivity among both stages. There was a trend of higher (...) gPDC in the Preparation stage from right temporo-parietal to left anterior-frontal brain scalp areas within 1–50 Hz, not reaching statistical significance. The opposite directionality was found for the Generation stage, with statistical significant differences restricted to the delta band. There was statistically higher gPDC observed for the inter-hemispheric connections AF07–AF08 in the delta and theta bands, and AF08 to TP09 in the alpha and beta bands. The left anterior-frontal recordings showed higher power localized to the gamma band for the Generation stage. An ancillary analysis of Sample Entropy did not show significant difference. The information transfer from anterior-frontal to temporal-parietal areas of the scalp may reflect multisensory interpretation during the Preparation stage, while brain signals originating at temporal-parietal toward frontal locations during the Generation stage may reflect the final decision making process to translate the multisensory experience into a creative text. (shrink)

BackgroundPreprint usage is growing rapidly in the life sciences; however, questions remain on the relative quality of preprints when compared to published articles. An objective dimension of quality that is readily measurable is completeness of reporting, as transparency can improve the reader’s ability to independently interpret data and reproduce findings.MethodsIn this observational study, we initially compared independent samples of articles published in bioRxiv and in PubMed-indexed journals in 2016 using a quality of reporting questionnaire. After that, we performed paired comparisons (...) between preprints from bioRxiv to their own peer-reviewed versions in journals.ResultsPeer-reviewed articles had, on average, higher quality of reporting than preprints, although the difference was small, with absolute differences of 5.0% [95% CI 1.4, 8.6] and 4.7% [95% CI 2.4, 7.0] of reported items in the independent samples and paired sample comparison, respectively. There were larger differences favoring peer-reviewed articles in subjective ratings of how clearly titles and abstracts presented the main findings and how easy it was to locate relevant reporting information. Changes in reporting from preprints to peer-reviewed versions did not correlate with the impact factor of the publication venue or with the time lag from bioRxiv to journal publication.ConclusionsOur results suggest that, on average, publication in a peer-reviewed journal is associated with improvement in quality of reporting. They also show that quality of reporting in preprints in the life sciences is within a similar range as that of peer-reviewed articles, albeit slightly lower on average, supporting the idea that preprints should be considered valid scientific contributions. (shrink)

Cet article aborde trois piliers essentiels de la culture maya : l’idée du monde comme un tout harmonieux au sein duquel tous les êtres vivants possèdent une âme ; l’idée de l’homme comme créature responsable de la planète et l’idée du temps envisagé de manière cyclique plutôt que linéaire, comme un devenir infini qui régit le monde et les hommes. L’idée de l’homme chez les Mayas de l’époque préhispanique a été recueillie principalement dans le Popol Vuh, un livre sacré de (...) l’ethnie quiché, écrit par les Mayas eux-mêmes une décennie après la conquête espagnole et dont les conceptions demeurent en partie valides pour les Mayas d’aujourd’hui, notamment la fraternité humain-animal et le devoir qu’ont les hommes de protéger le monde et de veiller à sa préservation. Ces diverses idées sont fondamentales pour ces peuples qui ont réussi à transcender le monde matériel afin d’y déceler des significations plus profondes dans la recherche d’une véritable harmonie cosmique. (shrink)

School environment refers to the set of relationships that occur among members of a school community that are determined by structural, personal, and functional factors of the educational institution, which provide distinctiveness to schools. The school environment is an important factor when evaluating student well-being. Previous findings have shown that variables such as physical, academic, and social dimensions influence school environments. This research seeks to explain the relationship between school environment and the well-being of primary education students. To carry out (...) this research, a total of 405 students from four public elementary schools in northwestern Mexico were selected to participate. The instrument used to measure the variables and the relationship of school environment and well-being is based on the three dimensions of school environment proposed by Kutsyuruba et al. (2015) : Physical, social, and academic. Statistical analyses were carried out to determine the reliability and validity of the measurement scales using SPSS V20 and EQS software. Confirmatory factor analysis models were tested to determine the construct validity of each scale; then, an analysis via structural equation modeling was made to form an explanatory model obtaining acceptable practical and statistical indicators. Among the relationships in this study, our research identified the variable of school environments as an outcome determined by physical, academic, and social factors. School environment and student well-being variables were also found to be correlated. (shrink)

Diatoms are a species‐rich group of photosynthetic eukaryotes, with enormous ecological significance and great potential for biotechnology. During the last decade, diatoms have begun to be studied intensively using modern molecular techniques and the genomes of four diatoms have been wholly or partially sequenced. Although new insights into the biology and evolution of diatoms are accumulating rapidly due to the availability of reverse genetic tools, the full potential of these molecular biological approaches can only be fully realized if experimental control (...) of sexual crosses becomes firmly established and widely accessible to experimental biologists. Here we discuss the issue of choosing new models for diatom research, by taking into account the broader context of diatom mating systems and the place of sex in relation to the intricate cycle of cell size reduction and restitution that is characteristic of most diatoms. We illustrate the results of our efforts to select and develop experimental systems in diatoms, using species with typical life cycle attributes, which could be used as future model organisms to complement existing ones. BioEssays 30:692–702, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

We examine access to institutions and opportunity for entrepreneurs in a rising tech economy. A significant proportion of entrepreneurs and CEOs of tech firms in the American economy are either first- or second-generation immigrant minorities. Are these minority entrepreneurs assimilating into a rising economic elite? To what extent is the technology economy segmented by ethnic boundaries and sectors? On a range of empirical measures, including access to financial and social capital, firm performance, and normative beliefs on fairness and cooperation, we (...) find second-generation immigrant minority tech entrepreneurs to be strikingly similar to their white counterparts. This study sheds new light on the institutional environment of a new regional technology economy, whereby barriers of entry are high in terms of human capital but economic competition is structurally and culturally open to immigrant minority entrepreneurs. (shrink)

La sociologie est née parallèlement à la modernisation occidentale ; ses principales positions héritées de l’ère classique portent sur la modernité et son impact sur les sociétés nationales. Après la décolonisation, la modernisation du « Tiers-Monde » a ouvert la voie à la notion de globalisation. La sociologie de la globalisation est une spécialité actuelle au sein des associations américaines et européennes de sociologie. La promesse d’une sociologie globale est à l’ordre du jour de l’Association internationale de sociologie depuis au (...) moins 1990. À un niveau plus profond, la sociologie globale exige de ne pas penser le rôle de concepts fondamentaux tels que la modernité, la religion ou la société par rapport à leurs origines occidentales. Les études globales et la sociologie postcoloniale, deux des domaines de recherche les plus connus qui revendiquent une visée globale, sont examinées afin de déterminer si elles fournissent des ressources conceptuelles adéquates pour la sociologie globale. Si les programmes de recherche de ces deux disciplines offrent des perspectives prometteuses, l’enquête suggère que toutes deux souffrent d’importants inconvénients. La tradition sociologique se trouve aujourd’hui dans une impasse ; la fragmentation peut persister, mais d’autres possibilités existent également. Aucune solution de grande ampleur n’est peut-être possible. Une sociologie véritablement mondiale pourrait finalement émerger des interprétations originales qui se développent à partir de parcours historiques non occidentaux. (shrink)

Analizar epistemológicamente los problemas de salud requiere incorporar la epistemología a los programas de posgrado en ciencias de la salud. Con el propósito de caracterizar los campos problemáticos que fundamenten el diseño de un programa académico para el curso de epistemología en ciencias de la salud se realizó un estudio con el enfoque de la hermenéutica gadameriana en tres etapas. El punto de partida expone la concepción de hombre, conocimiento y epistemología. El horizonte de comprensión se elaboró con tendencias epistemológicas (...) hegemónicas. La fusión de horizontes integró las características de los siguientes campos problemáticos: epistemología de las ciencias de la salud, lógica de las ciencias de la salud, tendencias epistemológicas en ciencias de la salud, problemas epistemológicos de las ciencias de la salud. Se concluye que los campos problemáticos descritos introducen al estudiante a la reflexión de su práctica científica mediante el análisis racional, axiológico y crítico. Analyzing health problems from an epistemological point of view requires epistemology to be included on health sciences postgraduate courses programs. Aimed at characterizing the problematic fields used as basis for the design of a health sciences epistemology academic program, a study with an approach to Gadamer hermeneutics in three stages was carried out. The starting point shows man, knowledge and epistemology conceptions. The comprehension horizon was made with epistemological-dominant trends. The horizons merge included characteristics from the following problematic fields: health sciences epistemology, health sciences logic, epistemological trends in health sciences, health sciences epistemological problems. It was reached the conclusion that the described problematic fields introduce students to their scientific practice reflection through a rational, axiological and critical analysis. (shrink)

In 1960, E. P. Wigner, a joint winner of the 1963 Nobel Prize for Physics, published a paper titled On the Unreasonable Effectiveness of Mathematics in the Natural Sciences [61]. This paper can be construed as an examination and affirmation of Galileo's tenet that “The book of nature is written in the language of mathematics”. To this effect, Wigner presented a large number of examples that demonstrate the effectiveness of mathematics in accurately describing physical phenomena. Wigner viewed these examples as (...) illustrations of what he called the empirical law of epistemology, which asserts that the mathematical formulation of the laws of nature is both appropriate and accurate, and that mathematics is actually the correct language for formulating the laws of nature. At the same time, Wigner pointed out that the reasons for the success of mathematics in the natural sciences are not completely understood; in fact, he went as far as asserting that “… the enormous usefulness of mathematics in the natural sciences is something bordering on the mysterious and there is no rational explanation for it.”. (shrink)

The book contains essays in honor of Victor Raskin. The contributions are all directly related to some of the major areas of work in which Raskin's scholarship has spanned for decades. The obvious connecting idea is the encyclopedic script-based foundation of lexical meaning, which informs his pioneering work in semantics in the 1970s and 1980s. The first part of the book collects articles directly concerned with script-based semantics, which examine both the theoretical and methodological premises of the idea and (...) its applications. Script-based semantics is the foundation of both Raskin's ground-breaking work in humor research (addressed by the articles in part 2) and in Ontological semantics (addressed in part 3), the most recent development of script-based semantics. The fourth part is dedicated to a less-known, but equally important, strand of Raskin's research, the applications of linguistics to other fields, including writing, lexicography, and professional applications (e,g., tourism). Overall, the book provides and up-to-date, in-depth discussion of an influential strand of the discussion on semantics and its most recent developments and influence on other seemingly unrelated fields, such as Cognitive Linguistics. (shrink)

In some recent papers (G. ‘t Hooft and others), it has been argued that quantum mechanics can arise from classical cellular automata. Nonetheless, G. Shpenkov has proved that the classical wave equation makes it possible to derive a periodic table of elements, which is very close to Mendeleyev’s one, and describe also other phenomena related to the structure of molecules. Hence the classical wave equation complements Schrödinger’s equation, which implies the appearance of a cellular automaton molecular model starting from classical (...) wave equation. The other studies show that the microworld is constituted as a tessellation of primary topological balls. The tessellattice becomes the origin of a submicrospic mechanics in which a quantum system is subdivided to two subsystems: the particle and its inerton cloud, which appears due to the interaction of the moving particle with oncoming cells of the tessellattice. The particle and its inerton cloud periodically change the momentum and hence move like a wave. The new approach allows us to correlate the Klein-Gordon equation with the deformation coat that is formed in the tessellatice around the particle. The submicroscopic approach shows that the source of any type of wave movements including the Klein-Gordon, Schrödinger, and classical wave equations is hidden in the tessellattice and its basic exciations – inertons, carriers of mass and inert properies of matter. We also discuss possible correspondence with Konrad Zuse’s calculating space. (shrink)