Introduction Adolescents’ physical activity (PA) behavior can be driven by several psychosocial determinants at the same time. Most analyses use a variable-based approach that examines relations between PA-related determinants and PA behavior on the between-person level. Using this approach, possible coexistences of different psychosocial determinants within one person cannot be examined. Therefore, by applying a person-oriented approach, this study examined a) which profiles regarding PA-related psychosocial variables typically occur in female sixth-graders, b) if these profiles deliver a self-consistent picture according (...) to theoretical assumptions, and c) if the profiles contribute to the explanation of PA. Materials and Methods The sample comprised 475 female sixth-graders. Seventeen PA-related variables were assessed: support for autonomy, competence and relatedness in PE as well as their satisfaction in PE and leisure-time; behavioral regulation of exercise (five subscales); self-efficacy and social support from friends and family (two subscales). Moderate-to-vigorous PA was measured using accelerometers. Data were analyzed using the self-organizing maps (SOM) analysis, a cluster analysis including an unsupervised algorithm for non-linear models. Results According to the respective level of psychosocial resources, a positive, a medium and a negative cluster were identified. This superordinate cluster solution represented a self-consistent picture that was in line with theoretical assumptions. The three-cluster solution contributed to the explanation of PA behavior, with the positive cluster accumulating an average of six minutes more moderate-to-vigorous PA per day than the medium cluster and ten minutes more than the negative cluster. Additionally, SOM detected a subgroup within the positive cluster that benefited from a specific combination of intrinsic and external regulations with regard to PA. Discussion The results underline the relevance of the assessed psychosocial determinants of PA behavior in female sixth-graders. The results further indicate that the different psychosocial resources within a given person do not develop independently of one another, which supports the use of a person-oriented approach. In addition, the SOM analysis identified subgroups with specific characteristics, which would have remained undetected using variable-based approaches. Thus, this approach offers the possibility to reduce data complexity without overlooking subgroups with special demands that go beyond the superordinate cluster solution. (shrink)

Algae are significant members of Earth's biodiversity. Having been studied for a long time, the discovery of new algal phyla is extremely unusual. Recently, the enigmatic “Picobiliphyta,” a group of uncultured eukaryotes unveiled using molecular tools, were claimed to represent an unrecognized early branching algal lineage with a nucleomorph (remnant nucleus of a secondary algal endosymbiont) in their plastids. However, subsequent studies rejected the presence of a nucleomorph, and single‐cell genomic studies failed to detect any plastid‐related genes, ruling out the (...) possibility of plastid occurrence. The isolation of the first “picobiliphyte,” Picomonas judraskeda, a tiny organism that feeds on very small (<150 nm) organic particles, came as final proof of their non‐photosynthetic lifestyle. Consequently, the group has been renamed Picozoa. The passage from “picobiliphytes” to “picozoa” illustrates the crucial role that classical protistology should play to provide sound biological context for the wealth of data produced by modern molecular techniques. (shrink)

SummaryThis article presents the development and current situation of the sociology of sport in Spain. It begins with a brief description of its origins and development as an academic field, which can be divided into three stages: birth, growth, and consolidation and internationalization. It then describes the theoretical and methodological traditions as well as the predominant topics (including the most representative research) in the social scientific studies on physical activity conducted so far in Spain. The main topics have been sports (...) in society, sports controversies, the social sports structure, sports identities and spaces for practicing sports, organization, management, and the job market. The article concludes with an analysis of the possible future challenges for the sociology of sport in Spain and the role that the journal Sociología del Deporte (Sociology of Sport) can play in view of these challenges. (shrink)

This study aimed to explore the role of two models of well-being in the prediction of psychological distress during the COVID-19 pandemic, namely PERMA and mature happiness. According to PERMA, well-being is mainly composed of five elements: positive emotions, engagement, relationships, meaning in life, and achievement. Instead, mature happiness is understood as a positive mental state characterized by inner harmony, calmness, acceptance, contentment, and satisfaction with life. Rooted in existential positive psychology, this harmony-based happiness represents the result of living in (...) balance between positive and negative aspects of one's life. We hypothesized that mature happiness would be a more prominent protective factor during the present pandemic than the PERMA composite. A total of 12,203 participants from 30 countries responded to an online survey including the Depression Anxiety Stress Scale (DASS-21), the PERMA-Profiler, and the Mature Happiness Scale-Revised (MHS-R). Confirmatory factor analyses indicated that PERMA and mature happiness were highly correlated, but nonetheless, they represented two separate factors. After controlling for demographic factors and country-level variables, both PERMA Well-being and MHS-R were negative predictors of psychological distress. Mature happiness was a better predictor of stress, anxiety, and general distress, while PERMA showed a higher prediction of depression. Mature happiness moderated the relation between the perceived noxious effects of the pandemic and all markers of distress (depression, anxiety, stress, and total DASS-21). Instead, PERMA acted as a moderator in the case of depression and stress. These findings indicate that inner harmony, according to the mature happiness theory, is an essential facet of well-being to be taken into consideration. The results of this study can also orient policies aimed to alleviate the negative effects of the pandemic on mental health through the promotion of well-being. (shrink)

ABSTRACTPrior research has found a relationship between perceived facial attractiveness and perceived personal trustworthiness. We examined the time course of attractiveness relative to trustworthiness evaluation of emotional and neutral faces. This served to explore whether attractiveness might be used as an easily accessible cue and a quick shortcut for judging trustworthiness. Detection thresholds and judgment latencies as a function of expressive intensity were measured. Significant correlations between attractiveness and trustworthiness consistently held for six emotional expressions at four intensities, and neutral (...) faces. Importantly, perceived attractiveness preceded perceived trustworthiness, with lower detection thresholds and shorter decision latencies. This reveals a time course advantage for attractiveness, and suggests that earlier attractiveness impressions could bias trustworthiness inferences. A heuristic cognitive mechanism is hypothesised to ease processing demands by relying on simple a... (shrink)

While civic education may not always be explicitly included in school curriculums, it can still be imparted through various non-teaching practices and in different places. In this article, we will delve into three potential educational spaces -memorials, museums, and libraries- that are commonly found in Western democracies. We will explore the significance and scope of each of these spaces and discuss their respective ethical, political, and aesthetic responsibilities. Additionally, we will examine how they possess agency and can influence the educational (...) process, recognizing that even non-human entities, such as nature itself, can play an important role in shaping our understanding of civic education. (shrink)

The aim of this article is to contribute to a better conceptual and practical delimitation of inclusive education. A pedagogy that reacts to the need to face the dilemmas of difference. An interpre...

En este trabajo analizamos cómo se articula la justificación estadística de las conclusiones obtenidas en los ensayos clínicos aleatorizados con sus condiciones de aceptabilidad ética y política. Pretendemos mostrar cómo varía tal justificación dependiendo de nuestra concepción de la probabilidad y, correlativamente, qué argumentos éticos se pueden ofrecer sobre cada una de ellas. Veremos cómo los enfoques frecuentista y bayesiano resultan defendibles en el ámbito de los ensayos clínicos y defenderemos que, para su aceptación pública, se les debe exigir garantías (...) de imparcialidad cuyo mejor ejemplo es la propia técnica de aleatorización. /// This paper analyses how to combine the statistical justification of the results obtained in a randomised clinical trial and the ethical and social arguments that support its implementation. It aims at showing how this justification varies according to the view on probability we adopt and the different ethical cases that can be made to sustain it. Both the frequentist and the Bayesian approaches to the design of clinical trials will be seen as equally defensible on these grounds. To be socially acceptable both approaches must meet an impartiality requirement, which is best served by the technique of randomisation. (shrink)

Clinical practices are considered one of the cornerstones in nurses' education. This study provides a framework to determine how factors in the academic environment, influence nursing student's satisfaction with their practices. A cross-sectional analytical study was conducted in a convenience sample of 574 nursing students at a private university in Valencia, during the 2016/2017 academic year, 79% were women. Two statistical methodologies were used for data analysis: hierarchical regression models and fuzzy sets qualitative comparative analysis. The HRM indicate that the (...) students' mean score influences all dimensions of satisfaction. Furthermore, in the fsQCA, the type of service and center, as well as the type of management, the preference in the choice of the practice center and the number of students per period per clinical educator influence satisfaction with clinical practices. These results could be used to understand how academic factors influence nursing students' satisfaction with their clinical practices and to create intervention programmes that improve it. This will help prepare students to be the future nursing workforce. (shrink)

There has always been a tension, in theory, between the public accountability and the professional efficiency of the agencies of the administrative state. How has that tension been handled? What would it be like for it to be well handled?

Language employs various coordinators to connect propositions, a subset of which are “logical” in nature and thus analogous to the truth operators of formal logic. We here focus on two linguistic connectives and their negations: conjunction _and_ and (inclusive) disjunction _or_. Linguistic connectives exhibit a truth-conditional component as part of their meaning (their semantics), but their use in context can give rise to various implicatures and presuppositions (the domain of pragmatics) as well as to inferences that go beyond semantic/pragmatic properties (...) (the result of reasoning processes). We provide a comprehensive review of the role of the logical connectives in language and argue that three sets of factors—semantic, pragmatic, and those related to reasoning—are separate and separable, though some details may differ cross-linguistically. As a way to showcase the argument, we present two experiments in language comprehension in Spanish wherein pragmatic content was minimised and reasoning processes neutered, thus potentially highlighting what might be the default meanings of the connectives under study. In Experiment 1 we show that the conjunctive reading of inclusive disjunction is available in positive contexts other than in syntactically intricate cases such as downward entailing and free choice contexts, contrary to what has been claimed in the literature. In Experiment 2 we show that negated conjunctions and disjunctions in Spanish can easily receive the same interpretation when contrasted against the same context and, moreover, that these interpretations match those available in English, despite claims from the literature that linguistic connectives and local negation interact differently in English and Romance languages. (shrink)

The origin of the eukaryotic cell nucleus and the selective forces that drove its evolution remain unknown and are a matter of controversy. Autogenous models state that both the nucleus and endoplasmic reticulum (ER) derived from the invagination of the plasma membrane, but most of them do not advance clear selective forces for this process. Alternative models proposing an endosymbiotic origin of the nucleus fail to provide a pathway fully compatible with our knowledge of cell biology. We propose here an (...) evolutionary scenario that reconciles both an ancestral endosymbiotic origin of the eukaryotic nucleus (endosymbiosis of a methanogenic archaeon within a fermentative myxobacterium) with an autogenous generation of the contemporary nuclear membrane and ER from the bacterial membrane. We specifically state two selective forces that operated sequentially during its evolution: (1) metabolic compartmentation to avoid deleterious co‐existence of anabolic (autotrophic synthesis by the methanogen) and catabolic (fermentation by the myxobacterium) pathways in the cell, and (2) avoidance of aberrant protein synthesis due to intron spreading in the ancient archaeal genome following mitochondrial acquisition and loss of methanogenesis. BioEssays 28: 525–533, 2006. © 2006 Wiley Periodicals, Inc. (shrink)

An introduction to propositional logical and first-order logic.

Ketamine is a dissociative drug that has been used medically since the 1970s primarily as an anesthetic agent but also for various psychiatric applications. Anecdotal reports and clinical research suggest substantial potential for ketamine as a treatment in conjunction with psychological interventions. Here, we review historical and modern approaches to the use of ketamine with psychotherapy, discuss the clinical relevance of ketamine’s acute psychoactive effects, propose a unique model for using esketamine with Acceptance and Commitment Therapy, and suggest considerations for (...) moving medication-assisted psychotherapy forward as a field. (shrink)

The dynamics of the "Etang de Berre", a brackish lagoon situated close to the French Mediterranean sea coast, is strongly disturbed by freshwater inputs coming from an hydroelectric power station. The system dynamics has been described as a sequence of daily typical states from a set of physicochemical variables such as temperature, salinity and dissolved oxygen rates collected over three years by an automatic sampling station. Each daily pattern summarizes the evolution, hour by hour of the physicochemical variables. This article (...) presents results of forecasts of the states of the system subjected to the simultaneous effects of meteorological conditions and freshwater releases. We recall the main step of the classification tree method used to build up the predictive model (Classification and Regression Trees, Breiman et al., 1984) and we propose a transfer procedure in order to test the stability of the model. Results obtained on the Etang de Berre data set allow us to describe and predict the effects of the environmental variables on the system dynamics with a margin of error. The transfer procedure applied after the tree building process gives a maximum gain in prediction accuracy of about 15%. (shrink)

Social and cultural contexts influence power dynamics and shape gender perceptions, roles, and decisions regarding the management of agrobiodiversity for dealing with and adapting to climate change. Based on a feminist political ecology framework and a mixed method approach, this research performs an empirical analysis of two case studies in the northern of India, one in the Himalayan Mountains and another in the Indian-Gangetic plains. It explores context-specific influence of gender roles and responsibilities on on-farm agrobiodiversity management gendered expertise and (...) knowledge related to agrobiodiversity and gendered preferences for practices and institutional arrangements for agrobiodiversity conservation linked to adaptation to climate change. In the Himalayan mountains women actively participate in crop and seed management decisions and tasks, and maintain informal institutions for seed and services exchanges in the case of crisis, which simultaneously favours high levels of agrobiodiversity and enhances women’s social status. By contrast, in the Indio-Gangetic plains, where women from better-off households are socially secluded and women from poorer households work mainly as labourer to respond to high out-migration of men, they exercise less public control over agrobiodiversity, with their role being mainly invisible at the homestead and related to post-production tasks. We finally discuss as improved understanding of the links between gendered spaces, crops, tasks, social status, and agrobiodiversity management can facilitate the design of gender-sensitive policy interventions for conservation and adaptation to climate change. (shrink)

Combining two thoughts into a compound mental representation is a central feature of our verbal and non-verbal logical abilities. We here approach this issue by focusing on the contingency that while natural languages have typically lexicalised only two of the possible 16 binary connectives from formal logic to express compound thoughts—namely, the coordinatorsandandor—some of the remainder appear to be entertainable in a non-verbal, conceptual representational system—alanguage of thought—and this suggests a theoretical split between the “lexicalisation” of the connectives and the (...) “learnability” of invented words corresponding to unlexicalised connectives. In avisual worldexperiment aimed at tracking comprehension-related as well as reasoning-related aspects of the capacity to represent compound thoughts, we found that participants are capable of learning and interpreting a made-up word standing for logic's NAND operator, a result that indicates that unlexicalised logical connectives are not only conceptually available, but can also be mapped onto new function words, as in the case of coordinators, or connectives, a class of words that do not usually admit new coinages. (shrink)

A growing number of recreational races are being held in different locations, drawing many local and visiting runners. This study examined the relationships between quality, value, satisfaction, and loyalty among runners in a recreational race and examines potential differences in relationships between these constructs based on the runners’ experience. The participants were 985 runners with a mean age of 40.74±9.41years. Validated, reliable ad hoc instruments were used. A multi-group analysis was performed to ascertain the existence of relationships between the constructs (...) and differences in the relationships between the different study groups. The results show that quality is a direct antecedent of value and satisfaction. Value is directly related to satisfaction and indirectly related to loyalty. Satisfaction is related to the loyalty of participants in the race. Differences in the relationship between satisfaction and loyalty were dependent upon the runners’ experience. Loyalty to a race depends primarily on satisfaction and is modified by the runners’ experience. (shrink)

The aim of the present study was to determine statistical differences in a set of badminton competition matches in five different modalities with regard to competition level (Group Phase versus Eliminatory Phase). Data from 453 sets (125 in men’s singles; 108 sets in women’s singles; 77 sets in men’s doubles; 73 in women’s doubles and 70 in mixed doubles) from the RIO 2016 Olympics Games were recorded and classified in two groups of variables to analyse variables related to match (5) (...) and set (15). A descriptive analysis and univariate test (Mann Whitney U) for non-parametric data were conducted. The results show in men’s and women’s singles all the variables related to match were higher in the Elimination Phase than in the Group Phase (p<0.01). In Sets 1 and 3, the longest set duration, rally and average rally were found in the Elimination Phase than Group Stage (p<0.05). In women’s singles, these differences were also recorded in Set 2. For doubles, the results are more stable among groups. Men’s doubles had a longer duration of the match and set (set 1 and set 2) (p<0.01), and also scored highest for average rally strokes (set 1 and set 3) (p<0.05) and shuttles used in the Elimination Phase versus the Group Phase along the match (p<0.01). In women’s doubles, more shuttles were used in a match in the Elimination than in the Group Phase. Moreover, the same results are established for Set 2, including for average rally. Mixed doubles saw no match going to three sets. However, the greatest differences showed a longer rally and average rally being registered in the Elimination than in the Group Phase. In conclusion, the timing factors of the badminton singles and doubles games were different in the Elimination and Group Phases. This information may help players and coaches prepare and administer different types of workouts or, more specifically, competition schedules adapted to the characteristics of modern badminton. (shrink)

Contrary to the emotions we feel in everyday contexts, the emotions we feel for fictional characters do not seem to require a belief in the existence of their object. This observation has given birth to a famous philosophical paradox (the ‘paradox of fiction’), and has led some philosophers to claim that the emotions we feel for fictional characters are not genuine emotions but rather “quasi-emotions”. Since then, the existence of quasi-emotions has been a hotly debated issue. Recently, philosophers and psychologists (...) have proposed to solve this debate by using empirical methods and experimentally studying differences between ‘real’ and ‘fictional’ emotions. In this paper, our goal is to assess the success of these attempts. We begin by surveying the existing empirical literature and stressing the methodological problems that plague most studies that might seem relevant to the debate, before focusing on recent studies that avoid this pitfall. We then argue that, due to conceptual problems, these studies fail to be relevant to the philosophical debate and emphasize new directions for future empirical research on the topic. (shrink)

This paper aims to enhance security in IoT device networks through a visual tool that utilizes three projection techniques, including Beta Hebbian Learning (BHL), t-distributed Stochastic Neighbor Embedding (t-SNE) and ISOMAP, in order to facilitate the identification of network attacks by human experts. This work research begins with the creation of a testing environment with IoT devices and web clients, simulating attacks over Message Queuing Telemetry Transport (MQTT) for recording all relevant traffic information. The unsupervised algorithms chosen provide a set (...) of projections that enable human experts to visually identify most attacks in real-time, making it a powerful tool that can be implemented in IoT environments easily. (shrink)

EI gran filósofo catalón, español, iberoamericano y universal Juan David García Bacca, cuya obra inmensa y de impresionante variedad y proyección sobre todas las áreas cientfíicas y humanas se sigue acrecentando cada día, a sus 84 años de edad, con nuevas creaciones -hombre a quien THEORIA tanto debe como inspirador, colaborador y fiel apoyo, desde su exilio venezolano, en los tiempos dificiles de la primera salida de la revista, entre 1952 y 1956- ha querido hoy hacernos llegar, junto (...) a su primer artículo para la nueva etapa, que publicamos en las páginas siguientes, su cordial saludo a la nueva THEORIA, que reproducimos a continuación. (shrink)

Una de las obras fundamentales de J.D. García Bacca, escrita para el Pueblo, para nuestros pueblos hispanoamericanos - sobre sus problemas seculares no resueltos por las secularmente llamadas soluciones, y también sobre sus nuevos problemas a cuya solución no sólo no van a servir de nada las viejas, sino, de servir, lo serán de obstáculos.