The evolutionary implications of environmental change due to organismic action remain a controversial issue, after a decades—long debate on the subject. Much of this debate has been conducted in qualitative fashion, despite the availability of mathematical models for organism–environment interactions, and for gene frequencies when allele fitness can be related to exploitation of a particular environmental resource. In this article we focus on representative models dealing with niche construction, ecosystem engineering, the Gaia Hypothesis and community interactions of Lotka–Volterra type, and (...) show that their quantitative character helps bring into sharper focus the similarities and differences among their respective theoretical contexts. (shrink)

Alternatives to convenience sampling (CS) are needed for HIV/STI surveillance of most-at-risk populations in Latin America. We compared CS, time space sampling (TSS), and respondent driven sampling (RDS) for recruitment of men who have sex with men (MSM) and transgender women (TW) in Lima, Peru. During concurrent 60-day periods from June-August, 2011, we recruited MSM/TW for epidemiologic surveillance using CS, TSS, and RDS. A total of 748 participants were recruited through CS, 233 through TSS, and 127 through RDS. The TSS (...) sample included the largest proportion of TW (30.7 %) and the lowest percentage of subjects who had previously participated in HIV/STI research (14.9 %). The prevalence of newly diagnosed HIV infection, according to participants' self-reported previous HIV diagnosis, was highest among TSS recruits (17.9 %) compared with RDS (12.6 %) and CS (10.2 %). TSS identified diverse populations of MSM/TW with higher prevalences of HIV/STIs not accessed by other methods. (shrink)

Traveling-wave solutions of the standard and compound form of Korteweg–de Vries–Burgers equations are found using factorizations of the corresponding reduced ordinary differential equations. The procedure leads to solutions of Bernoulli equations of non-linearity 3/2 and 2 (Riccati), respectively. Introducing the initial conditions through an imaginary phase in the traveling coordinate, we obtain all the solutions previously reported, some of them being corrected here, and showing, at the same time, the presence of interesting details of these solitary waves that have been (...) overlooked before this investigation. (shrink)

The Uniform Determination of Death Act (UDDA) provides that “an individual who has sustained either (1) irreversible cessation of circulatory and respiratory functions or (2) irreversible cessation of all functions of the entire brain, including the brain stem, is dead.” We show that the UDDA contains two conflicting interpretations of the phrase “cessation of functions.” By one interpretation, what matters for the determination of death is the cessation of spontaneous functions only, regardless of their generation by artificial means. By the (...) other, what matters is the cessation of both spontaneous and artificially supported functions. Because each UDDA criterion uses a different interpretation, the law is conceptually inconsistent. A single consistent interpretation would lead to the conclusion that conscious individuals whose respiratory and circulatory functions are artificially supported are actually dead, or that individuals whose brain is entirely and irreversibly destroyed may be alive. We explore solutions to mitigate the inconsistency. (shrink)

Aus dem Inhalt: Die Wissenschaftslehre als System der unvollendeten Vollendung (Sven Juergensen). - Fichtes Wechselwirkung und der implizite Hoerer der Wissenschaftslehre nova methodo (Guenther Zoeller). - Die Begrenzung: vom Anstoss zur Aufforderung (Jacinto Rivera de Rosales). - Die Idee des Leibes im Jenaer System (Virginia Lopez-Dominguez). - Fichtes politische und Rechtsphilosophie in der Deutung Richard Schottkys (Carla de Pascale). - Gibt es bei Fichte eine transzendentale Anthropologie? (Jose L. Villacanas).

Symposium on Christopher Bennet's The Apology Ritual. A Philosophical Theory of Punishment [Cambridge University Press, 2008].

Aus dem Inhalt: Die Wissenschaftslehre als System der unvollendeten Vollendung. - Fichtes Wechselwirkung und der implizite Hoerer der Wissenschaftslehre nova methodo. - Die Begrenzung: vom Anstoss zur Aufforderung. - Die Idee des Leibes im Jenaer System. - Fichtes politische und Rechtsphilosophie in der Deutung Richard Schottkys. - Gibt es bei Fichte eine transzendentale Anthropologie?.

How might artificial neural networks (ANNs) inform cognitive science? Often cognitive scientists use ANNs but do not examine their internal structures. In this paper, we use ANNs to explore how cognition might represent musical properties. We train ANNs to classify musical chords, and we interpret network structure to determine what representations ANNs discover and use. We find connection weights between input units and hidden units can be described using Fourier phase spaces, a representation studied in musical set theory. We find (...) the total signal coming through these weighted connection weights is a measure of the similarity between two Fourier structures: the structure of the hidden unit's weights and the structure of the stimulus. This is surprising because neither of these Fourier structures is computed by the hidden unit. We then show how output units use such similarity measures to classify chords. However, we also find different types of units—units that use different activation functions—use this similarity measure very differently. This result, combined with other findings, indicates that while our networks are related to the Fourier analysis of musical sets, they do not perform Fourier analyses of the kind usually described in musical set theory. Our results show Fourier representations of music are not limited to musical set theory. Our results also suggest how cognitive psychologists might explore Fourier representations in musical cognition. Critically, such theoretical and empirical implications require researchers to understand how network structure converts stimuli into responses. (shrink)

I intend to show some of the limits of the decision-theoretic model in connection with the analysis of cognitive agency. Although the concept of maximum expected utility can be helpful for explaining the decision-making process, it is certainly not the primary motor that moves agents to action. Moreover, it has been noticed elsewhere that this model is inadequate to the analysis of single cases of practical reasoning. A theory is proposed that introduces a plan-structure as a basic idea. In order (...) to know its very conceptual scope, we need to accommodate that theory to a cognitive architecture whereby the rational and autonomous agent makes choices and deliberates between courses of action to achieve specific goals that are of its interest. The paper endeavours also to clarify the relationship between the different modules that should constitute the architecture of an agent to accomplish the requisites of efficiency and autonomy in a changeable and dynamic world. (shrink)

‘You mean to say we’re not the only people in the world with the problem of a national park?’ This question was raised during a focus group discussion held with an indigenous community whose ancestral domain overlaps entirely with a national park in the Philippine Cordillera. The question encapsulates an experience shared across the Philippines, particularly in spaces where both the Indigenous Peoples’ Rights Act and the National Integrated Protected Areas System are implemented. This paper examines recent developments in indigenous (...) leaders’ participation in, and critique of, the implementation of these two laws and the development of environmental policies. It follows an emerging, multi-sectoral movement calling for the recognition of Indigenous Communities Conserved Areas and Territories, which has led to the crafting of a draft law. The ICCA bill is envisioned as a law that will resolve indigenous peoples’ problems with national parks, while meeting biodiversity conservation targets. The authors direct attention to how indigenous leaders campaigning for the ICCA bill are asserting their right to delineate space and make decisions in the contexts of policy-making and implementation. It is argued here that their articulations are registers of indigenous critique. Taking these critiques seriously has the potential to drive conservation policy-making past the stewardship stalemate, where conservation goals are pursued at the cost of indigenous peoples’ right to self-determination and indigenous peoples are expected to perform harmony with nature. (shrink)

In this paper I analyze the use of the concepts of «God» and «Sovereign» in the Later Middle Age. I try to show the analogies between the properties of both concepts. On the other hand I analyze: 1 o the epistemological problems of the relation God-World and State-Law; 2° the analogy between the miracle and the original constitutive power; 3° the resemblance between the pope infallibility and the sentence of a supreme tribunal. At the end I make reference to the (...) legitimatory role of these analogies to enhance the institution of the sovereign in these historical context. (shrink)

8 March, now known as International Women’s Day, is a day for feminist claims where demonstrations are organized in over 150 countries, with the participation of millions of women all around the world. These demonstrations can be viewed as collective rituals and thus focus attention on the processes that facilitate different psychosocial effects. This work aims to explore the mechanisms involved in participation in the demonstrations of 8 March 2020, collective and ritualized feminist actions, and their correlates associated with personal (...) well-being and collective well-being, collective efficacy and collective growth, and behavioral intention to support the fight for women’s rights. To this end, a cross-cultural study was conducted with the participation of 2,854 people from countries in Latin America and Europe, with a retrospective correlational cross-sectional design and a convenience sample. Participants were divided between demonstration participants and non-demonstrators or followers who monitored participants through the media and social networks. Compared with non-demonstrators and with males, female and non-binary gender respondents had greater scores in mechanisms and criterion variables. Further random-effects model meta-analyses revealed that the perceived emotional synchrony was consistently associated with more proximal mechanisms, as well as with criterion variables. Finally, sequential moderation analyses showed that proposed mechanisms successfully mediated the effects of participation on every criterion variable. These results indicate that participation in 8M marches and demonstrations can be analyzed through the literature on collective rituals. As such, collective participation implies positive outcomes both individually and collectively, which are further reinforced through key psychological mechanisms, in line with a Durkheimian approach to collective rituals. (shrink)

The closure of schools as a result of COVID-19 has been a critical global incident from which to rethink how education works in all our countries. Among the many changes generated by this crisis, all teaching became mediated by digital technologies. This paper intends to analyze the activities carried out during this time through digital technologies and the conceptions of teaching and learning that they reflect. We designed a Likert-type online questionnaire to measure the frequency of teaching activities. It was (...) answered by 1,403 teachers from Spain. The proposed activities varied depending on the learning promoted, the learning outcomes, the type of assessment to which the activities were directed, and the presence of cooperative activities. The major result of this study was that teachers used reproductive activities more frequently than constructive ones. We also found that most activities were those favoring verbal and attitudinal learning. The cooperative activities were the least frequent. Finally, through a cluster analysis, we identified four teaching profiles depending on the frequency and type of digital technologies use: Passive, Active, Reproductive, and Interpretative. The variable that produced the most consistent differences was previous digital technologies use These results show that Information and Communication Technologies uses are reproductive rather than constructive, which impedes effective digital technologies integration into the curriculum so that students gain 21st-century competencies. (shrink)

This study analyzes the most important predictors of acceptance of social network sites in a sample of Chilean elder people. We employ a novelty procedure to explore this phenomenon. This procedure performs apriori segmentation based on gender and generation. It then applies the deep learning technique to identify the predictors by segments. The predictor variables were taken from the literature on the use of social network sites, and an empirical study was carried out by quota sampling with a sample size (...) of 395 older people. The results show different predictors of social network sites considering all the samples, baby boomer males and females, silent males and females. The high heterogeneity among older people is confirmed; this means that dealing with older adults as a uniform set of users of social network sites is a mistake. This study demonstrates that the four segments behave differently, and many diverse variables influence the acceptance of social network sites. (shrink)

Le but de cet article est d'interroger les transformations culturelles qui accompagnent la commercialisation des inventions, phénomène majeur de l'essor marchand et consumériste au XVIIIe siècle. Les stratégies commerciales des inventeurs sont fondées sur une médiatisation croissante, mêlant rhétoriques visuelles (démonstrations, spectacles, expositions) et recours à l'imprimé: annonces de presse, affiches, prospectus, modes d'emploi, livrets d'utilisation. L'information et le savoir techniques jouent un rôle clef dans la construction de marchés pour les inventions. Cette dimension a rarement été prise en compte (...) dans l'histoire de la consommation et dans l'histoire des techniques. Pourtant, la littérature d'usage, qui postule l'autonomie et la capacité participative de l'acheteur comme argument de vente, exprime la montée en puissance des savoirs d'action, opératoires, prescriptifs, où priment le verbe et le geste, l'intention et le projet. Si la technologie des Lumières se déploie dans les traités et les dictionnaires, elle se manifeste aussi dans cette littérature éphémère, pratique et commerciale, source d'appropriations. (shrink)

The present research seeks to better understand research conditions in laboratory research, with special attention paid to the informed consent process and experimenter characteristics. The first study tested the impact of language perspective and experimenter demeanor upon participant retention of the informed consent information, attitudes toward the research project, and performance on experimental tasks. The second study examined the impact of experimenter attire. Across the two studies, our results suggest that there was no impact of language perspective, whereas the number (...) of other participants in the laboratory, experimenter attire, and experimenter demeanor influence participant behaviors in the laboratory. (shrink)

Manuel Alejandro Serra Pérez L’expression « virtus essendi » utilisée par Thomas d’Aquin dans certains passages de ses oeuvres a été un des sujets abordés dans le thomisme contemporain chez les plus importants commentateurs d’Aquin. Étienne Gilson fut le premier des commentateurs qui écrivit des notes explicatives sur son sens, montrant que ce pouvoir dont l’expression parle fait référence à la source d’où provient toute perfection et actualité, l’esse ut actus essendi. De son côté, le dominicain canadien Lawrence Dewan, particulièrement (...) intéressé à montrer que cette « virtus » est partagée par les deux co-principes de l’étant, à savoir, la forme et l’être, considère au contraire que la doctrine thomiste de la « virtus essendi » développe plutôt le thème que la forme est le principe de l’être (principium essendi). Face à ces deux lectures contraires, dans cet article nous proposons d’en faire une analyse systématique et de proposer une possible piste d’investigation qui éclaire le sens de ce que Thomas d’Aquin comprend par l’expression « virtus essendi ». (shrink)

En este trabajo se define formamente el concepto de representacion en química utilizando homomorfismos desde estructuras algebraicas, que llamamos sistemas de tipo C, en otras estructuras especiales de símbolos muy relacionados con los que son habituales en la qímica experimental. Para la definicion de los sistemas de tipo C se ha seleccionado un conjunto minimo de relaciones y funciones, que son necesarias para expresar proposiciones significativas en química. Tambien se define un lenguaje formal de primer orden adecuado a los sistemas (...) de tipo C, que llamamos L. EI resultado principal que se demuestra es que toda representación que verifica las mismas sentencias de L que un sistema de tipo C, es necesariamente isomorfo a él. Se concluye por lo tanto que puede existir un problema linguístico subyacente en la aplicacion que de la mecaníca cuántica se hace en la química teórica.The concept of representation in chemistry bas been formallv defined by means of homomorphisms from algebraical structures, which we call type-C systems, to some special sets of symbols which can be related to the symbols ordinarily used in experimental chemistry. A minimum number of relations and functions, which would suffice to express significant propositions in chemistry, have been chosen to define type-C systems. A first order formal language L adequate to type-C systems has been defined. It has been shown that each representation that verifies the same sentences of L as a type-C system is necessarily isomorphic to it. It is concluded that a systematic study of the representation problem in chemistry is in order because a deep language problem underlies the application of quantum mechanies to chemical problems. (shrink)

En el presente artículo se examinan, a la luz de los planteamientos de Michel Foucault –y, en menor medida, de Roland Barthes y Jacques Derrida–, una serie de postulados fundamentales de la Teoría literaria, como el estatuto tradicional de la crítica literaria, la función del autor en la literatura y la propia literatura como disciplina de estudio, en especial desde su dimensión institucional. Para el desarrollo de los argumentos foucaultianos se toman como referencia algunos de los textos de la llamada (...) “primera época” en los sesenta, pero sobre todo un par de documentos inéditos en francés respecto de la literatura, provenientes de los expedientes del Fondo Michel Foucault localizado en el Institut Mémoires de l’Édition Contemporaine, en Caen, Francia. (shrink)

La première maternité du monde hispanique est fondée à Lima en 1826 grâce notamment à l’action d’une sage-femme française, Benoîte Cadeau-Fessel. Celle-ci a fait ses études à la maternité de Port-Royal et souhaite diriger une institution de ce type dans le Nouveau Monde. Madame Fessel arrive à Lima accompagnée de son mari et y crée une maternité. Particulièrement dynamique et entreprenante, elle forme des étudiantes péruviennes à la théorie et à la clinique et organise la profession de sage-femme. Les femmes (...) ainsi formées s’érigent rapidement en spécialistes de l’obstétrique et se revendiquent plus compétentes que les accoucheuses traditionnelles et les médecins. Les sages-femmes formées à la maternité de Lima acquièrent une reconnaissance sociale qui leur permet d’asseoir leur expertise en matière d’accouchement, grâce à l’autorité scientifique et professionnelle de Madame Fessel. (shrink)

Résumé La sous-traitance dans les métiers londoniens est un phénomène massif au XVIIIe siècle qui transforme l’économie et la culture technique artisanales. Elle est liée à la recherche de producteurs qualifiés capables de répondre à la demande en nombre d’articles hautement composites, censés varier les effets visuels et fonctionnels des objets de consommation. L’économie de la variété, appliquée à une production importante, favorise l’extension des circuits entre producteurs et l’essor des marchés de production, c’est-à-dire une organisation ramifiée complexe fondée sur (...) la mobilisation d’opérateurs externes spécialisés, sous l’égide d’artisans-entrepreneurs. Nous nous proposons d’examiner l’impact de cette organisation du travail sur la culture technique et les identités professionnelles en milieu artisanal. On abordera cette question d’une part à travers l’écrit économique, d’autre part à partir d’actes de la pratique. (shrink)