The influence of interfaces on the formation of bubbles in He-ion-irradiated Cu/Mo nanolayers

The role of immiscible Cu/Mo interfaces on the formation of helium (He) bubbles in ion-irradiated Cu/Mo 5?nm multilayers is examined. Interfaces significantly enhance the critical He concentration above which bubbles, approximately 1?nm in diameter, are detected via through-focus imaging in a transmission electron microscope. He-to-vacancy ratio affects the formation and distribution of He bubbles. The diameter of He bubbles in Cu appears to be slightly larger than that in Mo.     

Shear vibration of a crystal plate carrying an array of microbeams

We study shear vibration of a rotated Y-cut quartz crystal plate carrying an array of microbeams with their bottoms fixed to the top surface of the plate. The beams undergo flexural vibrations when the plate is in shear motion. The plate is modeled by the theory of anisotropic elasticity. The beams are modeled by the Euler–Bernoulli theory for beam bending. A frequency equation that determines the resonant frequencies of the structure is derived. An analytical solution on beam-induced frequency shift is obtained using a perturbation procedure. It is shown that the frequency shift may be used to measure geometric/physical properties of the beam array. A vibrating crystal plate carrying a beam array may also be considered for application as an ultrasonic brush.     

The bounds of electrostrictive coefficients of relaxor-based ferroelectric ceramics

Two extreme approximations, namely the Voigt- and Reuss-type approximations, have been used to estimate the effective electrostrictive coefficients of isotropic or anisotropic (as in the dc electric-field-biased piezoelectric mode) relaxor-based ferroelectric ceramics. It is shown that, for a dense ceramic with cubic crystallites, both simple approximations give very similar results and can be used for such estimates. However, for common ceramics containing pores, the Voigt and Reuss approximations yield only extreme upper and lower bounds respectively, and a more appropriate approach is needed.     

Book Review

Uncertainty is a major source of psychological strain during organizational change. This study tested a model of change-related communication, uncertainty, and control and their relationship with psychological strain, job satisfaction, and turnover intentions. Self-report data were obtained from staff at a psychiatric hospital undergoing restructuring. Results indicated that uncertainty had a direct and an indirect (via feelings of lack of control) relationship with psychological strain. Partialling out common method variance led to a complete mediation of this relationship by control. Other predictions about the relationship of these variables with psychological strain, job satisfaction, and turnover intentions were supported. Implications for future research and practice of change communication are discussed.     

It is nice to be important,but it is more important to be nice: Country‐of‐origin's perceived warmth in product failures

Although a large body of research has documented country‐of‐origin effects, very few works have inquired systematic differences in the content of national stereotypes that shape attitudes toward foreign products and their manufacturers. Drawing from the stereotype content model, the authors propose that the often ignored warmth dimension of the origin country is as important as (sometimes more important than) the well‐studied competence dimension in certain situations. As shown in two studies, perceived warmth of the origin country predicts purchase intention in normal situations as well as after product failure. Copyright © 2013 John Wiley & Sons, Ltd.     

Player–Spectator Discrepancies on Risk Preference during Decision Making

Risk preference during decision making depends not only on the potential risk and profits but also on the roles taken in the current task. Those who perform tasks are more risk-seeking than those who only watch. Given the prominent effect of experiencing the task, the player–spectator discrepancies are supposed to arise in the experiencing phase instead of the choosing phase. In the present study, the authors separated the experiencing role and the choosing role through a stylus maze task in which participants first performed in pairs—one as the player and the other as the spectator—and then chose from two rewarding options for themselves or their partners. The findings show that the experience as players induced a risk-seeking tendency in decision making, which suggests that it was the experiencing role, rather than the choosing role, that caused the difference of risk preference, at least for financially motivated groups and under similar task conditions.     

组织成员地位的形成及影响机制

组织成员地位通常是指组织内个体受组织其他成员尊重和钦佩的程度,是近些年备受关注的一个心理学构念。虽然组织成员地位与权力、阶层、面子、基于组织的自尊等概念具有一定的关联性,但它们之间存在着明显的界限。组织成员地位主要受到外在显性因素(形体特征、人口统计特征)、内在心理因素(人格、认知、情绪、行为)以及神经生理因素(睾酮激素、皮质醇激素)的影响,并能够对组织成员的认知、情绪、行为和绩效产生显著的影响。未来研究应当进一步区分组织成员地位的维度,探索组织成员地位的生物学基础和文化差异,关注组织成员地位的动态演化及其后果,并检验团队和组织层面地位分布的作用机制。     

Motor knowledge is one dimension for concept organization: Further evidence from a Chinese semantic dementia case

Neuropsychological and neuroimaging studies have indicated that motor knowledge is one potential dimension along which concepts are organized. Here we present further direct evidence for the effects of motor knowledge in accounting for categorical patterns across object domains (living vs. nonliving) and grammatical domains (nouns vs. verbs), as well as the integrity of other modality-specific knowledge (e.g., visual). We present a Chinese case, XRK, who suffered from semantic dementia with left temporal lobe atrophy. In naming and comprehension tasks, he performed better at nonliving items than at living items, and better at verbs than at nouns. Critically, multiple regression method revealed that these two categorical effects could be both accounted for by the charade rating, a continuous measurement of the significance of motor knowledge for a concept or a semantic feature. Furthermore, charade rating also predicted his performances on the generation frequency of semantic features of various modalities. These findings consolidate the significance of motor knowledge in conceptual organization and further highlights the interactions between different types of semantic knowledge.     

An IRT assessment of Rotter's I-E scale: a new approach and some considerations

This study assessed the functioning and measurement properties of Rotter's Locus of Control Scale in its Spanish version by using a new approach based on Item Response Theory. Our procedure allows us: (a) to detect the impact of response biases (acquiescence and social desirability); (b) to evaluate clearly the test dimensionality and structure; (c) to evaluate and understand the causes of some items' inefficiency; and (d) to increase measurement precision. Globally, the results do not contradict those obtained in previous research, but allow some of the criticisms the scale had received to be qualified. Some recommendations for use are proposed.