Static and dynamical ageing processes at room temperature in a Fe25Ni0.4C virgin martensite: effect of C redistribution at the nanoscale

The work-hardening behaviour of virgin martensitic steel has been investigated in a strictly un-aged state and after various ageing conditions. At room temperature (RT), the un-aged alloy shows astonishing tensile performances (ultimate tensile stress?=?1600?MPa/uniform elongation?=?15%) but unexpected serrations. These serrations can be suppressed by static ageing (at RT or higher) while maintaining the initial work-hardening rate (ageing at RT). Parallel investigations using atom probe tomography reveal that the distribution of carbon at the atomic scale evolves from purely homogeneous for virgin martensite to partly segregated at a very fine scale (5–10?nm) after static ageing. This particular mechanical behaviour can therefore be associated with a very local decrease in available carbon in solid solution due to redistribution and segregations on defects (nanotwins) that occurs rapidly, even after few days at RT.     

Can a Flow-Network Approach Shed Light on Children's Problem Solving?

A complete theory of human behavior must capture both the apparent randomness of behavior (its strong context dependence) as well as its stability (a surprising resistance to changes in behavior despite salient changes in the context). Recent efforts in cognitive science have made important discoveries toward such a theory, emphasizing the idea that skilled behavior seeks to balance overregular tendencies with tendencies that are overrandom. The hallmark of these efforts is the idea of self-organized criticality, the state of a system poised toward maximally adaptive behavior, characterized by pink-noise pattern of variability. In this article, we expand these efforts, looking for a new measure to capture the balance between order and disorder, one that can be applied to small data sets of categorical performance. The proposed measure borrows ideas from information theory, previously applied to the stability of energy flow in an ecosystem. Using published data on a problem-solving task with preschoolers, we describe ways in which this measure could be applied. Results are promising, opening the possibility for studying the trade-off between randomness and stability in children's reasoning.     

Exercising Research Skills: An Information Literacy Boot Camp for Religious Studies Graduate Assistants

Instructional librarians at the University of Dayton collaborated with a religious studies graduate program to offer a three-day information literacy workshop, or “boot camp,” to the program's graduate research assistants. The graduate program had found that the assistants' research skills did not meet the expectations of their faculty mentors, and the workshop sought to address these deficiencies. With input from the religious studies faculty, the workshop focused on catalog and database searching, Boolean logic, primary sources, and the Chicago citation style. The librarians incorporated active learning exercises into each workshop session. Assessment of the workshop suggested that the assistants gained confidence in these information literacy skills. Feedback from faculty also indicated that the assistants' research skills had improved.     

Religious Coping and Quality of Life Among Severely Ill Lung Patients in a Secular Society

This survey study investigated the prevalence of religious beliefs and religious coping and possible associations between religious factors and quality of life (QoL) among a group of severely ill lung patients (lung cancer and chronic obstructive pulmonary disease) in Denmark (N = 111). Almost two thirds (64.8%) reported having some belief in God and/or a spiritual power. Patients who reported believing in God and patients who believed in God and a spiritual power reported better QoL than patients who reported that they believed in a spiritual power only. Religious coping was prevalent; for positive religious coping strategies, those used from least to most often, respectively, were invoked 15% to 37% of the time; for negative religious coping strategies the percentages were 3% to 16%. Negative religious coping was associated with lower QoL (β = ?0.320, p < .006), whereas no associations were found between positive religious coping and QoL. Results are discussed in relation to the cultural context of secularized societies like the Scandinavian countries.     

Motivation for physical activity in young adults with physical disabilities during a rehabilitation stay: a longitudinal test of self‐determination theory

We tested a self‐determination theory (SDT) process model during a 3 week physical activity rehabilitation stay among young adults with a physical disability (N = 44, M_age = 24.7, SD = 5.1). As hypothesized, perceived autonomy support positively predicted needs satisfaction at the end of the stay (r = .38, p < .01). Further, needs satisfaction was positively linked to changes in autonomous motivation for physical activity (r = .47, p < .01). Both changes in autonomous motivation and self‐efficacy were associated with physical activity increases over the stay (r = .57, p < .01 and r = .47, p < .01, respectively). Bootstrapping results supported the SDT process model, indicating a support for a development toward more self‐determined motivation in rehabilitation.     

Warmth and Contingency and Their Relationship to Maternal Attitudes Toward Parenting

In this study, the authors addressed the question of whether maternal parenting behaviors in terms of sensitivity, warmth, and contingency with respect to small infants were equally represented in attitudes toward parenting. Sixty mothers from central Germany with middle-class socioeconomic backgrounds were videotaped with their 1st born 3-month-old infant in a free-play and a caregiving episode in their home. The different maternal parenting components were behaviorally analyzed. Maternal attitudes toward parenting were assessed with self-report measures. The results showed that behavioral sensitivity was significantly associated with attitudes related to contingency, whereas behavioral warmth and contingency were not associated with maternal attitudes. The authors interpreted differential associations as a reflection of intuitive and explicit parenting strategies, with only sensitivity being explicitly represented.