Mantle region accommodating two-dimensional grain boundary sliding in ODS ferritic steel

Two-dimensional grain-boundary sliding (GBS) was achieved microscopically in an oxide-dispersion-strengthened ferritic steel with an elongated and aligned grain structure, which was deformed perpendicular to the long axis. At the border between superplastic regions II and III, microscopic deformation was observed using sub-micron grids drawn on the material surface using a focused ion beam. GBS was accommodated by intragranular deformations in narrow areas around grain boundaries, which has been predicted by earlier researchers as characteristics of the core–mantle model. These observations suggest that dislocations slip only in the mantle regions around wavy boundaries to relax the stress concentration caused by GBS during superplasticity.     

Multi-disclinational description of pentagonal particles with subsurface layer free of twin boundaries

We present the results on the modelling of structural changes in pentagonal small particles (PSPs) during their growth. We prove that after a certain critical size it becomes energetically favourable for a PSP to form a subsurface layer free of twin boundaries (TBs), which are only typical structural elements for smaller size PSPs. In this layer, the low-angle dislocation boundaries (DBs) are formed. Our calculations of the energy stored in the transformed PSP are based on the disclination model of a PSP, in which the TB junctions, as well as TB–DB junctions are treated as wedge disclinations.     

Ministry Demand and Stress Among Korean American Pastors: A Brief Report

This study examined the relationship between ministry demand and three outcome variables among a sample of 194 Korean American pastors. Results showed that the demands of boundary ambiguity and presumptive expectations were negatively associated with well-being and positively associated with symptomatic stress. There was no association with life satisfaction. Exploratory analyses showed significant cultural differences between this sample and a non-Korean sample regarding the construct of boundary ambiguity.     

模糊分组的时间层次网络结构研究

本研究通过两个实验来对连续性的时间顺序标码的层次网络结构的性质进行了探讨。研究结果表明,连续性的时间顺序标码是按照层次网络的结构组织起来的,若干项目组成一个小组,若干小组组成更大的组。连续性的时间标码层次网络的形成具有自动性、内隐性的特点。连续性的时间顺序标码的层次网络结构是主观的、模糊的。两个相邻的小组的项目之间出现了距离效应,而两个相邻的大组的项目之间则出现了越界效应,由于两个大组的项目的平均距离大于两个小组的项目的平均距离,越界效应大于距离效应。     

The cognitive processing of Japanese loanwords in katakana

Abstract: The present study examined two questions concerning the cognitive processing of Japanese loanwords borrowed from English and written in katakana. The first question was whether "interlexical activation" occurs between Japanese and English. Results from a lexical decision task showed that loanwords phonetically similar to the original English words were judged with the same speed and accuracy as those being phonetically dissimilar to their original English words. The study further examined the cognitive processing of unadopted loanwords (i.e., words unlisted in a Japanese loanword dictionary). Reaction times displayed the shortest mean for non-words, followed by pseudo-loanwords, and finally unadopted loanwords. Thus, the only time the lexical representation of an original English word was possibly activated was when native Japanese speakers had seldom seen the word in katakana. The second question was what creates the "lexical mental boundary" between adopted and unadopted loanwords. A questionnaire showed that native Japanese speakers are likely to use decision-making strategies for determining lexicality of loanwords in Japanese based on their daily experience of exposure to katakana words in print.     

Bound to remember: Infants show superior memory for objects presented at event boundaries

Following Event Segmentation Theory (EST) adult memory is enhanced at event boundaries (EB). The present study set out to explore this in infancy. Sixty‐eight 21‐month‐olds watched a cartoon with one of two objects (counterbalanced) inserted for 3s either at EB or between EB. Ten minutes later they watched both objects (familiar and novel) in a 10s Visual Paired Comparison (VPC) test while being eye‐tracked. Furthermore, they were asked to point to the previous object. Based on EST, we hypothesized that objects inserted at EB would be processed more fully, resulting in improved memory compared to objects inserted between EB. Only infants with objects at EB exhibited memory evidenced by a transient familiarity preference for the first 3s of the test. Only 18 infants completed the pointing test, but all infants presented with objects at EB (10/10) pointed to the correct (familiar) object, which was not the case for the infants presented with objects between EB (5/8).     

Scaling affordances for human reach actions

A methodology developed by Cesari and Newell [Cesari, P., & Newell, K. M. (1999). The scaling of human grip configuration. Journal of Experimental Psychology: Human Perception and Performance 25, 927-935; Cesari, P., & Newell, K. M. (2000). The body-scaling of grip configurations in children aged 6-12 years. Developmental Psychobiology 36, 301-310] was used to delineate the roles of an object's weight (W) and distance (D) as well as the actor's strength (S) in determining the macroscopic action used to reach for the object. Participants reached for objects of five different weights placed at 10 distances. The findings of a single discriminant analysis revealed that when object weight is scaled in terms of each individual's strength and reach distance is scaled in terms of each individual's maximum-seated reach distance, a single discriminant analysis was able to predict 90% of the reach modes used by both men and women. The result of the discriminant analysis was used to construct a body-scaled equation, K=lnD+ln(W/S)/36, similar in form to the one derived by Cesari and Newell, accurately predicted the reach action used. Our findings indicate that Cesari and Newell's method can identify a complex relationship between geometric and dynamic constraints that determine the affordances for different reach actions.     

Influence of twist boundary on deformation behaviour of 〈1 0 0〉 BCC Fe nanowires

Molecular dynamics simulations revealed significant difference in deformation behaviour of 〈1?0?0〉 BCC Fe nanowires with and without twist boundary. The plastic deformation in perfect 〈1?0?0〉 BCC Fe nanowire was dominated by twinning and reorientation to 〈1?1?0〉 followed by further deformation by slip mode. On the contrary, 〈1?0?0〉 BCC Fe nanowire with a twist boundary deformed by slip at low plastic strains followed by twinning at high strains and absence of full reorientation. The results suggest that the deformation in 〈1?0?0〉 BCC Fe nanowire by dislocation slip is preferred over twinning in the presence of initial dislocations or dislocation networks. The results also explain the absence of extensive twinning in bulk materials, which inherently contains large number of dislocations.     

Shared Traumatic Reality and Boundary Theory: How Mental Health Professionals Cope With the Home/Work Conflict During Continuous Security Threats

ABSTRACT

In a shared traumatic reality, mental health professionals and their clients are exposed to the same communal disaster. Both living and working in the same high-stress community can create a conflict between the professional's work and his or her private life. The author analyzed three focus groups consisting of 30 mental health professionals who worked with traumatized populations in a missile-stricken area in southern Israel. The professionals’ experience was explored through the lens of boundary theory by examining the ways in which they created and maintained boundaries between the different domains of their lives. Findings demonstrated that these professionals presented a continuum of segmentation and integration of the domains as suggested by boundary theory, when both living and working in a highly stressed environment. The discussion deals with possible costs and benefits of the boundary theory continuum.     

Stimulating ethical awareness during training

This paper argues for a preventative approach to ethical violations through developing and maintaining ethical awareness in training and in the group life of each society. Rather than teaching ethics as a theoretical subject, a method is proposed that encourages direct personal confrontation with ethical dilemmas through the consideration of key examples, in the Talmudic manner. This develops ethical 'muscles' and allows candidates to explore the dilemmas of what Primo Levi called the 'grey zone' where the boundaries between good and bad are unclear. Several illustrations of such ethical dilemmas are described, as used in workshops that the author has run in several societies and developing groups. In this way, ethical awareness becomes part of the group life of the society so that analysts become an ethical resource for each other.