Psychological Foundations of Trust

ABSTRACT— Trust lies at the foundation of nearly all major theories of interpersonal relationships. Despite its great theoretical importance, a limited amount of research has examined how and why trust develops, is maintained, and occasionally unravels in relationships. Following a brief overview of theoretical and empirical milestones in the interpersonal-trust literature, an integrative process model of trust in dyadic relationships is presented.     

Family Strain and Adolescent Delinquency in Two Chinese Cities,Guangzhou and Hong Kong

Elucidating the conditions in which family strain takes effect in adolescent delinquency is one avenue along which to substantiate general strain theory. These conditions include family relationship and the type of delinquency. In the context of Chinese societies, the conditions also include the differences between socialist, collectivist Mainland China and capitalist, more individualist Hong Kong. We collected survey data from 1,026 secondary school students in Guangzhou in Mainland China, and from 1,116 in Hong Kong, to demonstrate these conditions. The results, which indicate the intimate relationship between parents and adolescents, verify that family strain has a very strong impact on adolescent delinquency. In this connection, family strain comprised parental support as a negative indicator. However, the effect of parental support on adolescent strain was only weakly negative in Guangzhou and even positive in the case of nonworking mothers. The differentials in parental influence between Guangzhou and Hong Kong are attributable to the different family policies and structures in the two cities. On the other hand, family strain exhibited similar effects on two types of delinquency, violence and status offense.     

Development and initial validation of a measure of supportive and unsupportive managerial behaviors

Studies documenting the positive consequences of managerial support have continued unabated, despite considerable ambiguity surrounding the conceptualization of this construct and the adoption of measures that lack specificity. Moreover, research on the positive effects of managerial support has overshadowed our understanding of the ways in which managers contribute to job strain. In order to address these gaps, we took an inductive approach, documenting supportive, and unsupportive managerial behaviors reported by a sample of 25 employees working in a variety of occupations. We subsequently developed a new measure of supportive and unsupportive managerial behaviors and validated it with two separate samples (N = 100; N = 247). The measure demonstrated strong internal reliability and convergent validity. Factor analysis of the measure yielded a two-factor model of support and a one-factor structure of unsupportive behaviors. Theoretical and organizational implications of the findings are discussed.     

跨文化适应与应激、应激源研究:中国学生、学者在德国

本文旨在探讨在德国的中国学生／学者跨文化适应与应激源和应激之间的关系。其中,跨文化适应分为总体、人际及学习／工作适应三方面．应激源分为社会和学习／工作两方面,而应激则有文化、心理和生理三个层面。被试为99名在德国的中国留学生及访同学者。研究结果表明：除工作／学习应激与总体适应没有显著负相关之外,应激源与三方面的跨文化适应均显著负相关,回归分析表明了同样的趋势。在应激与跨文化适应的关系上,适应良好的被试应激水平较低。总体适应能够预测文化、生理及生理应激。     

Chapter 2. Single Mothers' Transition to Self-Sufficiency

SUMMARY

In this chapter, I review the literature in four sections central to my research questions. First, I review the socio-historical context of trends that have had an impact on single mothers in transition from economic assistance to self-sufficiency. Next, I present research that focuses on poor women's interactions with barriers to work versus self-sufficiency. Then I examine the reported interactions between work, family role strain, and the psychological well-being of low-income women during their transition to work. Finally, I introduce related literature that reflects studies and reports on the outcomes of TANF after 1996.     

Thermal stability of nanocrystalline fcc and hcp Ni(Si) synthesized by mechanical alloying of Ni90Si10

The thermal stability of nanocrystalline fcc and hcp Ni(Si), obtained by mechanical alloying of Ni₉₀Si₁₀, has been studied. The allotropic transformation from fcc to hcp Ni(Si) is accompanied by a volume expansion of 8.6% and is observed when fcc Ni(Si) reaches a critical crystallite size of 10nm. The hcp phase transforms to stable fcc Ni(Si) at 573K. It has been identified that the lattice distortion in nanometre-sized crystallites from the equilibrium configuration and the decrease in the interfacial energy with grain refinement act as self obstacles in controlling the grain growth of nanocrystalline materials.     

On the glass transition temperature and the elastic properties in Zr-based bulk metallic glasses

The temperature dependence of the elastic moduli was estimated from ultrasound time of flight measurements performed on bulk metallic glasses of composition Zr_{63? x} Cu₂₄Al _x Ni₁₀Co₃. Using the corresponding values at the glass transition temperature, the local atomic strain was determined. The obtained values for the critical atomic strain calculated for 8 at%?<?x?<?15 at% are close to the predicted universal criterion derived from a topological model, but may also reflect the difference in the chemical interaction that are not accounted by a topological approach.     

Effect of Mg content on Portevin–Le Chatelier band strain in Al–Mg sheet alloys

Experimental measurements of stress drops and band strains in type-B Portevin–Le Chatelier (PLC) bands were carried out for 5xxx series Al–Mg sheets with Mg content between 1.8 and 4.5?wt%. While the stress drops increase with global strain, the band strain values in all the samples follow a common linear relationship with global strain. The results indicate that the type-B PLC band strain is independent of solute content at given strain rate.     

Yielding and strain hardening in aluminium single-crystal foils subjected to tension and bending

A series of tensile and microbend tests were conducted on aluminium single-crystal foil specimens with different thicknesses ranging from 20 to 90?µm. Two different crystal orientations relative to the tensile direction were considered in the tests: one is an orientation that was excepted to activate at least four slip systems on four different slip planes, and the other is an orientation that was expected to activate only a single-slip system. In the tensile tests, typical size dependence of initial yield strength was observed. The microbend test method was extended to include a reversal of bending direction. Using the curves of bending moment normalized by the square of foil thickness versus surface strain, which were obtained from the reversed bending tests, the total amounts of strain hardening were divided into isotropic and kinematic hardening components. In the microbend tests, a pronounced size-dependent kinematic hardening behaviour was clearly observed; meanwhile, the amounts of isotropic hardening were very small, particularly for the single-slip orientation.     

Solutal gradients in strained equilibrium

Abstract

We demonstrate that the distortion of a crystal, caused by secondary phase precipitates, can stabilize a solutal gradient around the precipitate. The gradient persists in the quasi-static state stabilized by the gradient of the elastic energy around the precipitate. The peak concentration at the interface between precipitate and matrix hereby is independent of the radius of the precipitate and no mechanism of ripening is active in an arrangement of precipitates of different size. The model offers an explanation of experimental observations of the anomalous stability of nano-precipitates in Al–Cu.