In actuarial parlance, the price of an insurance policy is considered fair if customers bearing the same risk are charged the same price. The estimate of this fair amount hinges on the expected value obtained by weighting the different claims by their probability. We argue that, historically, this concept of actuarial fairness originates in an Aristotelian principle of justice in exchange (equality in risk). We will examine how this principle was formalized in the 16th century and shaped in life insurance (...) during the following two hundred years, in two different interpretations. The Domatian account of actuarial fairness relied on subjective uncertainty: An agreement on risk was fair if both parties were equally ignorant about the chances of an uncertain event. The objectivist version grounded any agreement on an objective risk estimate drawn from a mortality table. We will show how the objectivist approach collapsed in the market for life annuities during the 18th century, leaving open the question of why we still speak of actuarial fairness as if it were an objective expected value. (shrink)

We defend, from a contractarian perspective, that the fair price of an insurance policy is the amount that the contracting parties agree when they are both equally uncertain about the insured event. Drawing on the approach developed by R. Sugden in _The Community of Advantage_, we answer two standard objections raised against contractarianism in the actuarial sciences: (1) people are not wise enough to assess their actuarial risks; (2) they are not rational enough to decide which insurance policy suits them (...) better. We show under which circumstances people can make fair actuarial agreements, without presupposing any objective risk or rationality benchmarks. (shrink)

Exploramos aquí la conexión entre los conceptos de riesgo e igualdad en el argumento del observador imparcial. La concepción de la justicia que elegiría un observador imparcial se justifica por la pureza del procedimiento de elección. Sin embargo, si modelizamos esta decisión utilizando medidas del riesgo habituales en matemática financiera, veremos cómo el criterio de elección del observador bajo el velo de la ignorancia contiene una preferencia implícita por el grado de desigualdad resultante. Esto nos obliga a reconsiderar la pureza (...) procedimental de la elección. (shrink)

This article examines the influence of a teacher education program designed to promote aspects of critical multicultural citizenship on the views of preservice teachers’ concerning citizenship education for culturally diverse contexts. The findings are based on a case study of four minority preservice teachers who attended a large research university in the Southwest and who expressed beliefs related to critical multicultural citizenship. Two questions guided this study: Where did participants acquire their views on citizenship and citizenship education? What role did (...) their teacher education program play in fostering their views of citizenship education? Findings from this study illuminated nuances in the interaction between participants’ prior beliefs about teaching for citizenship education and those ideas expressed in the teacher education program. While participants clung soundly to prior experiences, they often borrowed terminology and tools that were explicitly conveyed in the teacher education program to both express their ideas and to frame their classroom practices. Implications for teacher educators are discussed. (shrink)

Tras una breve introducción en el fenómeno migratorio, el autor delimita los documentos sociales de la Iglesia a partir de los cuales realizará su estudio descriptivo y valorativo de las migraciones, apuntando sus dificultades, consecuencias y características. En un segundo momento, aborda sus principales causas y las actuaciones llevadas a cabo en el orden político-administrativo y eclesial. Por último, concluye reconociendo la fuerza de los argumentos bíblicos y de los emanados de la tradición cristiana a favor del reconocimiento de la (...) idéntica dignidad humana, la cual ha de situar al hombre en el centro de la política y la economía y no como el sub-producto de ningún sistema. (shrink)

Este trabajo pretende explorar la dimensión ritual en los Textos de las Pirámides, el corpus de literatura religiosa extensa más antiguo de la humanidad. La naturaleza variada de sus componentes textuales ha impedido que los egiptólogos comprendan en profundidad las complejidades de la colección y los contextos originales en los que estos textos aparecieron. La aplicación de la teoría del ritual, principalmente la aproximación de la sintaxis ritual, ofrece a los investigadores un marco excelente de análisis e interpretación del corpus, (...) su estructura y función. Sujeto a las reglas de la sintaxis ritual es posible exponer los múltiples niveles de significado en el corpus para la resurrección y salvación del difunto. (shrink)

RESUMENLos resultados empíricos y los análisis teóricos en física cuántica ni apoyan ni refutan concluyentemente el realismo. Aunque se mostrara que la interpretación de Copenhague era la única viable de entre todas las posibles, todavía quedaría por probar que con eso se había conculcado cualquier tipo de realismo. Bohr mismo aceptaba un realismo con tintes kantianos y mostraba desagrado hacia el instrumentalismo de Heisenberg. Pero además de la interpretación de Copenhague existen interpretaciones rivales que, a pesar de no estar tan (...) desarrolladas como aquélla, dejan abierto el camino al realismo en la física cuántica. En particular la interpretación de David Bohm.PALABRAS CLAVEREALISMO CIENTIFICO – TEORIA CUANTICA – LOCALIDADABSTRACTThe empirical achievements and theoretical analyses in quantum physics neither support nor refute conclusively realism. Even if it were shown that Copenhagen Interpretation is the only feasible one between all the possible interpretations in quantum mechanics, it would remain to prove that it forbids every kind of realism. In fact, Bohr himself accepted a realism with Kantian aspects and disagreed whith Heisenberg’s instrumentalism. But there are interpretations, rival to Copenhagen’s, which in spite of not being son developped, smooth the way for realism in quantum physics. Particularly David Bohm’s interpretation.KEYWORDSSCIENTIFIC REALISM – QUANTUM THEORY – LOCALITY. (shrink)

Relations between different religious and philosophical traditions in the Korean Peninsula have gone through periods of harmonious coexistence and other more conflictive ones throughout its history. An important moment of change between a pluralistic society and a society increasingly focused on Confucian thought was during the Goryeo kingdom. The purpose of this article is to show how social changes influence the social recognition of shamanism practices and practitioners in Korea, especially in relation to Confucian public officials. To illustrate these social (...) changes and their influence on the social recognition of the religious practitioner, I will analyse a text that reflects them. The text, which has not previously been translated into Spanish, is a poem by the Confucian scholar Yi Gyubo, Nomupyeon, where we can see well the relationship between the shamans and the Confucian officials during the second half of the Goryeo dynasty. This poem shows the social and political changes that took place in society at this time and how religious practices play an important role in power struggles. The position of shamans in society was changing as the new social, philosophical and religious ideas of Neo-Confucianism were established and spread across the Korean peninsula. In a parallel process, shamanism will become a practice associated with women, with all implications that this means in terms of gender values. These changes will influence the position of the shamans and their recognition by society from then until today in Korea. (shrink)

Anecdotal evidence has long lamented the status of social studies in elementary classrooms as observed by preservice teachers. As standardized testing has risen for mathematics and language arts, social studies has been pushed aside. In the aftermath of accountability legislation such as No Child Left Behind, research indicates that social studies is less visible in elementary classrooms due to an instructional focus on tested content areas (e.g. math, language arts, reading). In this study, approximately 90 elementary preservice teachers enrolled in (...) a social studies methods course responded to a survey and indicated the frequency and quality of lessons they observed over the course of a single semester. Findings report that preservice elementary teachers witnessed few, if any, lessons in social studies in the elementary classroom. Implications for teacher education are discussed. (shrink)

Comparative thanatologists study the responses to the dead and the dying in nonhuman animals. Despite the wide variety of thanatological behaviours that have been documented in several different species, comparative thanatologists assume that the concept of death is very difficult to acquire and will be a rare cognitive feat once we move past the human species. In this paper, we argue that this assumption is based on two forms of anthropocentrism: an intellectual anthropocentrism, which leads to an over-intellectualisation of the (...) CoD, and an emotional anthropocentrism, which yields an excessive focus on grief as a reaction to death. Contrary to what these two forms of anthropocentrism suggest, we argue that the CoD requires relatively little cognitive complexity and that it can emerge independently from mourning behaviour. Moreover, if we turn towards the natural world, we can see that the minimal cognitive requirements for a CoD are in fact met by many nonhuman species and there are multiple learning pathways and opportunities for animals in the wild to develop a CoD. This allows us to conclude that the CoD will be relatively easy to acquire and, so, we can expect it to be fairly common in nature. (shrink)

En este artículo se realiza un periplo a lo largo de la historia de la península coreana a través de los caminos recorridos por las principales tradiciones religiosas presentes en ella. Analizaremos el papel que han tenido en el modo de entender las relaciones sociales y la creación de mecanismos de inclusión y exclusión dentro de la sociedad coreana. Las interrelaciones establecidas entre ellas como factor que ha contribuido al progreso de la sociedad y que diferentes grupos fueran aceptados o (...) rechazados a lo largo de la historia. Estudiamos como el pensamiento de estas tradiciones religiosas y el modo de entenderlo ha impulsado u obstaculizado los procesos de inclusión y liberación a lo largo de las diferentes etapas de la historia de Corea. (shrink)

The rise of mathematical developments in the theories of consciousness has led to new measures to detect consciousness in a system. The Integrated Information Theory is one of the best mathematical rooted attempts to quantify the level of consciousness in a system with Φ as the effective information generated in a system above its parts. Recently, the IIT has inspired the Perturbational Complexity Index to detect conscious states in patients with disorders of consciousness, and it has shown to have almost (...) perfect classification accuracy. In this study, we explore the statistical correspondence between the theoretical Φ and the experimental PCI through a neurocomputational model of coupled oscillators that can be artificially perturbed, which mainly focuses on the dynamics of collective synchronization between subsets of brain areas. Our results reveal that both measures are statistically related but, in principle, this relationship is far to be perfect. These results are discussed in the context of the model of coupled oscillators, which mainly focuses on the dynamics of collective synchronization between subsets of brain areas. (shrink)

Despite countless anecdotes and the historical significance of insight as a problem solving mechanism, its nature has long remained elusive. The conscious experience of insight is notoriously difficult to trace in non-verbal animals. Although studying insight has presented a significant challenge even to neurobiology and psychology, human neuroimaging studies have cleared the theoretical landscape, as they have begun to reveal the underlying mechanisms. The study of insight in non-human animals has, in contrast, remained limited to innovative adjustments to experimental designs (...) within the classical approach of judging cognitive processes in animals, based on task performance. This leaves no apparent possibility of ending debates from different interpretations emerging from conflicting schools of thought. We believe that comparative cognition has thus much to gain by embracing advances from neuroscience and human cognitive psychology. We will review literature on insight and discuss the consequences of these findings to comparative cognition. (shrink)

We analyse team dictator games with different voting mechanisms in the laboratory. Individuals vote to select a donation for all group members. Standard Bayesian analysis makes the same prediction for all three mechanisms: participants should cast the same vote regardless of the voting mechanism used to determine the common donation level. Our experimental results show that subjects fail to choose the same vote. We show that their behaviour is consistent with a joy of ruling: individuals get an extra utility when (...) they determine the voting outcome. (shrink)

Recordamos la utopía desde una sola mirada: sociedades paritarias y felices sin diferencias ni clases sociales. Si hubo futuros trazados desde posiciones liberales, no se nos ocurre otra forma que la distopía: futuros de pesadilla, sin libertad y con diferencias de clase abismales. Pero esto no explica su fertilidad e influencia. Si el liberalismo hizo de los sueños de la izquierda una distopía, ¿pudo ser porque quien soñaba era él? En estas páginas se analizan esas promesas, para aclarar el ocaso (...) neoliberal de todo futuro, y de nuestro capitalismo sin horizonte"--Front cover flap. (shrink)

This study aimed to analyze the levels of personal aggression and victimization, ethnic-cultural aggression and victimization, self-esteem, empathy, social skills and gender in adolescents as potential predictors of bullying in Spain and Ecuador. The wide pluricultural sample comprised Secondary Education students from both countries (N = 25190, average age = 13.92, SD = 1.306; NSpain = 14437; NEcuador = 10753), who took part in the study by filling in a self-report. The results revealed that predictive models of bullying for both (...) countries explain 50-70% of variance. A transnational predictive pattern of personal victimization can be observed based on the levels of ethnic-cultural victimization, ethnic-cultural aggression, personal aggression, self-deprecation and affective empathy. A transnational predictive pattern of personal aggression is evidenced depending on the levels of ethnic-cultural aggression, personal victimization, self-deprecation, ethnic-cultural victimization and the fact of being female. We concluded that bullying can largely be predicted by involvement in ethnic-cultural discrimination. These results are discussed, and educational inferences are drawn for prevention. (shrink)

This study aimed to investigate the student-athletes' capability to face the academic, sport, and social challenges during the coronavirus disease 2019 (COVID-19) lockdown and to disclose novel aspects of dual careers. A 32-item online survey encompassing demographic characteristics, sport and university engagement, support and dual-career benefits, physical activity, sitting time, and the time deemed necessary to recover the previous level of performance was developed. Four hundred sixty-seven student-athletes (males: 57%, females: 43%) from 11 countries, competing in 49 different sports (individual: (...) 63.4%, team: 36.6%) at regional (17.5%), national (43.3%), and international (39.2%) levels, and enrolled at high school (21.9%) and university (78.1%) levels completed the survey. During the lockdown, the respondents decreased the time dedicated to sport and academics, although they maintained an active lifestyle. Student-athletes from countries under severe contagion were more likely to train at home, dedicate to academics, and receive support from the coach but less likely receive support from their teachers. With respect to their team sport counterparts, athletes competing in individual sports trained more and were more likely to receive support from their coaches. International athletes showed the highest training time and support from their coaches and as student-athletes. High school students received more support from their coaches and teachers, whereas university students were more likely considering dual careers useful to cope with the COVID-19 pandemic. This study substantiates the relevant role of competitive sports participation in the maintenance of active lifestyles, with student-athletes considering home training and e-learning valuable resources during the lockdown. Furthermore, their sport and academic commitments helped student-athletes cope with the emergency of the COVID-19 pandemic. (shrink)

The aim of this study was to analyze the association between coaches’ experience and their perceptions on the implementation of a long-term athletic development model created in 2016 by the Portuguese Swimming Federation. Eighty-six swimming coaches were assembled in groups according to their experience level: “novice”, “intermediate”, and “experienced”, and they answered a questionnaire with the following items: awareness of the existing model acceptance usefulness for practice, and implementation of this model by their peers. Regardless of experience, ~67% of the (...) coaches were aware of the model. Among those, a large number showed acceptance and confidence in its usefulness for their daily practice. Most coaches showed concerns about the fact that their peers do not respect the model frameworks, declaring the search for their swimmers’ immediate success as the main cause for such behavior. The results also showed an association between experience and knowledge about the model’s existence [χ2 = 10.223, p < 0.01, V = 0.345], and experienced coaches exhibited better knowledge than their intermediate [χ2 = 9.555, p < 0.01, V = 0.393] or novice [χ2 = 5.926, p = 0.02, V = 0.314] counterparts. While there was an association between the coaches’ experience and knowledge about the LTAD model’s existence, this situation does not seem to influence the way coaches accept and understand the usefulness of the model for their daily practice. (shrink)

The Gait Deviation Index is a multivariate measure of overall gait pathology based on 15 gait features derived from three-dimensional kinematic data. GDI aims at providing a comprehensive, easy to interpret, and clinically meaningful metric of overall gait function. It has been used as an outcome measure to study gait in several conditions: cerebral palsy, post-stroke hemiparetic gait, Duchenne muscular dystrophy, and Parkinson’s disease, among others. Nevertheless, its use in population with Spinal Cord Injury has not been studied yet. The (...) aim of the present study was to investigate the applicability of the GDI to SCI through the assessment of the relationship of the GDI with the Walking Index for Spinal Cord Injury II. 3D gait kinematics of 34 patients with incomplete SCI was obtained. Besides, 3D gait kinematics of a sample of 50 healthy volunteers was also gathered with Codamotion motion capture system. A total of 302 and 446 strides were collected. GDI was calculated for each stride and grouped for each WISCI II level. HV data were analyzed as an additional set. Normal distribution for each group was assessed with Kolmogorov-Smirnov tests. Afterward, ANOVA tests were performed between each pair of WISCI II levels to identify differences among groups. The results showed that the GDI was normally distributed across all WISCI II levels in both iSCI and HV groups. Furthermore, our results showed an increasing relationship between the GDI values and WISCI II levels in subjects with iSCI, but only discriminative in WISCI II levels 13, 19, and 20. The index successfully distinguished HV group from all the individuals with iSCI. Findings of this study indicated that the GDI is not an appropriate multivariate walking metric to represent the deviation of gait pattern in adult population with iSCI from a normal gait profile when it is compared with the levels of walking impairment described by the WISCI II. Future work should aim at defining and validating an overall gait index derived from 3D kinematic gait variables appropriate for SCI, additionally taking into account other walking ability outcome measures. (shrink)

In the paper we obtain a new characterization of the BCK-algebras which are subdirect product of BCK-chains. We give an axiomatic algebraizable extension of the BCK-calculus, by means of a recursively enumerable set of axioms, such that its equivalent algebraic semantics is definitionally equivalent to the quasivariety of BCK-algebras generated by the BCK-chains. We propose the concept of "linearization of a system" and we give some examples.

The increase in women’s labor market participation emphasizes the importance of understanding maternal separation anxiety, that is, the unpleasant maternal emotional state, due to the actual or anticipated short-term separation from the child. Drawing on the insights of the attachment and psychoanalytic perspectives, the Maternal Separation Anxiety Scale was developed to overcome existing measurement gaps. However, prior research did not replicate its original three-factor structure in the contemporary context and in other cultural settings, using large samples composed of mothers of (...) preschool children. This study aimed to examine the factorial structure of the MSAS in a sample of 597 Portuguese mothers of children aged 5–84 months who completed the questionnaire. The exploratory factor analysis conducted in subsample 1 revealed a four-factor structure: Maternal Negative Feelings, Beliefs about Exclusive Maternal Care, Need of Proximity, and Perceptions of Separation Benefits for Children. Confirmatory factor analyses conducted in subsample 2 revealed that the original three-factor structure revealed a poor fit, whereas the four-factor solution revealed an acceptable fit. As in previous studies, our findings report deviations from the original three-factor structure of the MSAS. Three of the newly identified factors seem to reflect specific sub-dimensions that originally guided item development in the MSAS, namely, maternal negative feelings, maternal attitudes about the value of exclusive maternal care, and the need of proximity with the child. The last factor appears to represent a refinement of original items pertaining to perceptions about separation effects for children. (shrink)

Tradicionalmente, las primas de los contratos de seguros se han considerado justas o equitativas cuando se corresponden exactamente con el riesgo de las pólizas, medido este último mediante la esperanza matemática de la siniestralidad. En este artículo llevamos a cabo una crítica de este enfoque aparentemente objetivo y proponemos una justificación alternativa de la denominada equidad actuarial, basada en argumentos contractualistas. Para ello nos apoyamos en ciertas intuiciones de Jean Domat, un jurista francés del siglo XVII, acerca de la incertidumbre (...) compartida, integradas dentro del marco general proporcionado por la teoría contractualista del economista y filósofo contemporáneo Robert Sugden. (shrink)

We study 944 shareholder proposals submitted to 343 U.S. firms on climate change issues during 2009–2022. We use logistic and two-stage regression to estimate the propensity for a firm to be targeted or subjected to a vote at the annual general meeting and, for voted proposals, the determinants of that vote. We also examine whether climate-related proposals affect investor returns and how they relate to firms’ future environmental performance and greenhouse gas emissions. Compared to a matched sample, we first find (...) that activists target larger, more carbon-intensive, and less R&D-active firms. Second, voting likelihood is higher for firms with repeated and operations-related proposals and lower pre-proposal environmental ratings. By contrast, disclosure-related proposals are likelier to be negotiated and withdrawn. Third, repeated and operations-related proposals receive higher votes in favor, whereas votes on carbon-intensive firms do not. Fourth, building on the theory that investors act as if they distinguish among the different shareholder proposals based on the expected cost to the firm, we find evidence to support this idea. We find that investors respond negatively to ex-ante costlier proposals, such as those that relate to emissions reduction and target carbon-intensive firms. Fifth, targets’ future environmental performance rating is almost twenty percent higher after a proposal than before compared to the matched sample, whereas emissions do not budge appreciably. (shrink)

In this paper an algebraic version for temporal algebras of the logical filtrations for modal and temporal logics is analysed. A structure theorem for free temporal algebras and also some results with regard to the variety of temporal algebras are obtained.

In this paper the structure of pretemporal algebra is used to study some aspects of temporal algebras and modal algebras. The paper contains a computational approach to finite temporal algebras and a general splitting theorem for finite temporal algebras.

We present a one per cent measurement of the cosmic distance scale from the detections of the baryon acoustic oscillations in the clustering of galaxies from the Baryon Oscillation Spectroscopic Survey, which is part of the Sloan Digital Sky Survey III. Our results come from the Data Release 11 sample, containing nearly one million galaxies and covering approximately 8500 square degrees and the redshift range 0.2 < z < 0.7. We also compare these results with those from the publicly released (...) DR9 and DR10 samples. Assuming a concordance Λ cold dark matter cosmological model, the DR11 sample covers a volume of 13 Gpc3 and is the largest region of the Universe ever surveyed at this density. We measure the correlation function and power spectrum, including density-field reconstruction of the BAO feature. The acoustic features are detected at a significance of over 7σ in both the correlation function and power spectrum. Fitting for the position of the acoustic features measures the distance relative to the sound horizon at the drag epoch, rd, which has a value of rd,fid = 149.28 Mpc in our fiducial cosmology. We find DV = at z = 0.32 and DV = at z = 0.57. At 1.0 per cent, this latter measure is the most precise distance constraint ever obtained from a galaxy survey. Separating the clustering along and transverse to the line of sight yields measurements at z = 0.57 of DA = and H =. Our measurements of the distance scale are in good agreement with previous BAO measurements and with the predictions from cosmic microwave background data for a spatially flat CDM model with a cosmological constant. © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society. (shrink)

In this paper a definition of n-valued system in the context of the algebraizable logics is proposed. We define and study the variety V3, showing that it is definitionally equivalent to the equivalent quasivariety semantics for the “Three-valued BCK-logic”. As a consequence we find an axiomatic definition of the above system.

In this paper we consider twelve classical laws of negation and study their relations in the context of BCK-algebras. A classification of the laws of negation is established and some characterizations are obtained. For example, using the concept of translation we obtain some characterizations of Hilbert algebras and commutative BCK-algebras with minimum. As a consequence we obtain a theorem relating those algebras to Boolean algebras.