Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite

A nearly abrupt coarsening of grains is observed in a newly developed Fe–Al–O ultra-fine-grained nanocomposite with a significant volume fraction (4%) of alumina nano-precipitates. The microstructure of the alloy was analysed in different states (as-received and annealed) by means of scanning electron microscopy, transmission electron microscopy (TEM) and hardness. The initial grain size 150–200 nm increases up to 50 μm during annealing 1000 °C/8 h and thereafter demonstrates saturation. A linear correlation between volume fraction of coarse grains and hardness was found. It was identified by TEM that alumina nano-precipitates stabilize the dislocation microstructure against recovery very effectively and the grain coarsening is due to fast growth of very few dislocation free grains. Thus, the observed grain coarsening has the attributes of static recrystallization.     

Cooperation Induces an Increase in Emotional Response,as Measured by Electrodermal Activity and Mood

Humans need social interaction with others for survival. Competition and cooperation are two somewhat opposed interpersonal strategies that help us to achieve both individual and shared aims and objectives. The aim of this research was to study whether autonomic activity is a good indicator of emotional activation in response to social interaction (cooperation, competition) or working alone, considering gender and outcome obtained in tasks (positive or negative) as moderating variables. We tested electrodermal activity (EDA) and mood before, during and after social (cooperation, competition) or working alone in men (64) and women (60), young-adult students from the University of Valencia. Higher EDA was observed in individuals taking part the cooperative than the competitive task. Further, men who competed showed lower SCLs than men who performed the other type of task. In contrast, women who cooperated demonstrated lower NSCRs than women who competed and men who cooperated. Participants with negative outcomes and women were found to have worse mood states. Our results may be generalizable to situations in which negotiation, mediation and cooperative strategies are relevant for decision making and/or problem solving.     

Clinicians' Observations of Family Interactions in the Reunification Process: The Parent Child Checklist

The present article employed a sample of 365 families of children in foster care to conduct a validation test of a newly developed instrument, the Parent Child Checklist (PCC). The PCC is a 54-item direct observation measure assessing parent–child interactions in the context of a family session. The PCC was developed to support the effective implementation of an evidence-based intervention, Parent Management Training-Oregon model, in the Kansas child welfare system. The PCC was designed to capture two scales of child behavior (prosocial and problem behavior) and five parenting domains (encouragement, positive involvement, problem solving, communication skill, and effective discipline). A combination of exploratory and confirmatory factor analysis was used in this first stage validation of the checklist. Results indicated the PCC scales obtained adequate internal consistency and interrater reliability. The confirmatory factor analysis supported 6 of the 7 expected scale domains; however, a two-factor solution was better - supported among the discipline items, labeled as effective and ineffective discipline. Test–retest reliability ranged from 0.45 to 0.80 across child behavior and parenting domains with alpha levels ranging from 0.65 to 0.88. A behavioral observation rating scale for clinicians that is reliable and feasible to implement can represent a significant improvement to practice-as-usual.     

Tolerance and Perception of Abuse in Youth Dating Relationships

A cross-sectional study of pre-university and university students of both genders was carried out in Spain (N = 4,919) to determine the levels of tolerance of partner violence per gender and the perception of abuse. Of the students, 26.3% were in a situation of unperceived abuse, especially the males (29.6%), but the level of tolerance of abusive behavior was significantly lower in females. The group of youths who did not perceive themselves as abused had higher levels of tolerance. In contrast, non-abused students presented low tolerance of violent behavior. Tolerance of dating violence is more strongly determined by gender than by the perception of abuse in young people.     

Between Homohysteria and Inclusivity: Tolerance Towards Sexual Diversity in Sport

The small number of openly gay or lesbian people in top-flight sport raises the question about whether sporting or social context makes it easy or difficult for these sportspeople to come out. There are studies conducted in the UK and USA using the theory of homohysteria but the scarcity of studies in Spain on this subject, added to the lack of a tool with which to measure tolerance towards sexual diversity in sport, has led us to write this paper in which we analyze the suitability of a new tool for classifying the metacognitive profiles of two samples from different cultures, relative to the concept of homohysteria. This correlational study involved 879 men and women aged 16–78 (M = 28.45 years; SD = 13.08) living in either Spain or the United Kingdom, who were actively participating in or following sport of some kind. Results show that the new instrument has adequate construct validity and high reliability (Alpha = .95), facilitating the measurement of two dimensions of tolerance towards non-heteronormative sexualities in sport: non-rejection and acceptance. Results point to three metacognitive profiles in terms of fit of the level of tolerance in these two dimensions: low, high, and partial. Findings show high levels of both dimensions of tolerance in the UK, and higher percentages of partial tolerance in Spain, underlining the importance of cultural contexts and policies which may affect people’s levels of tolerance. We conclude that a pseudo-inclusive climate exists in Spanish society today.     

Visual properties and memorising scenes: Effects of image-space sparseness and uniformity

Previous studies have demonstrated that humans have a remarkable capacity to memorise a large number of scenes. The research on memorability has shown that memory performance can be predicted by the content of an image. We explored how remembering an image is affected by the image properties within the context of the reference set, including the extent to which it is different from its neighbours (image-space sparseness) and if it belongs to the same category as its neighbours (uniformity). We used a reference set of 2,048 scenes (64 categories), evaluated pairwise scene similarity using deep features from a pretrained convolutional neural network (CNN), and calculated the image-space sparseness and uniformity for each image. We ran three memory experiments, varying the memory workload with experiment length and colour/greyscale presentation. We measured the sensitivity and criterion value changes as a function of image-space sparseness and uniformity. Across all three experiments, we found separate effects of 1) sparseness on memory sensitivity, and 2) uniformity on the recognition criterion. People better remembered (and correctly rejected) images that were more separated from others. People tended to make more false alarms and fewer miss errors in images from categorically uniform portions of the image-space. We propose that both image-space properties affect human decisions when recognising images. Additionally, we found that colour presentation did not yield better memory performance over grayscale images.     

Relation between physical activity and academic performance in 3rd-year secondary education students

The main aim of this study was to analyze the relationship between the amount of physical activity and academic performance in 3rd-year secondary education students. The sample was taken from three secondary schools in the area of Barcelona. 284 students (158 girls, 126 boys) with an average age of 14.7 yr. participated. The International Physical Activity Questionnaire was used by students to self-report their amount of physical activity. Students' academic records were obtained for comparisons. Results showed that there was a linear relationship between academic performance and physical activity; nevertheless, there was a trend to stronger correlation when modeling the relationship between these variables with a quadratic equation. Further research should focus on whether academic performance and physical activity might be better explained with a second-order equation.     

Leisure-time physical activity and psychological well-being in university students

An analysis of psychological well-being (self-esteem and subjective vitality) of 639 Spanish university students was performed, while accounting for the amount of leisure-time physical activity. The Spanish versions of the Rosenberg Self-Esteem Scale and Subjective Vitality Scale were employed. Participants were divided into four groups (Low, Moderate, High, and Very high) depending on estimation of energy expenditure in leisure-time physical activity. Men and women having higher physical activity rated higher mean subjective vitality; however, differences in self-esteem were observed only in men, specifically between Very high and the other physical activity groups.     

Factor structure of the Spanish version of the Object-Spatial Imagery and Verbal Questionnaire

The reliability and factor structure of the Spanish version of the Object-Spatial Imagery and Verbal Questionnaire (OSIVQ) were assessed in a sample of 213 Spanish university graduates. The questionnaire measures three types of processing preferences (verbal, object imagery, and spatial imagery). Principal components analysis with varimax rotation identified three factors, corresponding to the three scales proposed in the original version, explaining 33.1% of the overall variance. Cronbach's alphas were .72, .77, and .81 for the verbal, object imagery, and spatial imagery scales, respectively.     

General terms,rigidity and the trivialization problem

We defend the view that defines the rigidity of general terms as sameness of designated universal across possible worlds from the objection that such a characterization is incapable of distinguishing rigid from non-rigid readings of general terms and, thus, that it trivializes the notion of rigidity. We also argue that previous attempts to offer a solution to the trivialization problem do no succeed.