Spatial prediction of crystalline defects observed in molecular dynamic simulations of plastic damage

Molecular dynamic computer simulation is an essential tool in materials science to study atomic properties of materials in extreme environments and guide development of new materials. We propose a statistical analysis to emulate simulation output with the ultimate goal of efficiently approximating the computationally intensive simulation. We compare several spatial regression approaches including conditional autoregression (CAR), discrete wavelets transform (DWT), and principle components analysis (PCA). The methods are applied to simulation of copper atoms with twin wall and dislocation loop defects, under varying tilt tension angles. We find that CAR and DWT yield accurate results but fail to capture extreme defects, yet PCA better captures defect structure.     

Model Selection and Regression t-Statistics

It is shown that dropping quantitative variables from a linear regression, based on t-statistics, is mathematically equivalent to dropping variables based on commonly used information criteria.     

Turnover intention: the effects of core self-evaluations,proactive personality,perceived organizational support,developmental feedback,and job complexity

Despite extensive examination of predictors for turnover and turnover intention, most studies have focused on attitudinal and behavioural aspects of individual employees. Based on a study of knowledge workers in a Korean conglomerate, we investigated the effects of personal (i.e. core self-evaluations and proactive personality) and contextual factors (i.e. perceived organizational support, developmental feedback, and job complexity) on turnover intention. There were modestly negative but significant correlations between the contextual factors and turnover intention. In addition, core self-evaluations were found to be negatively related to turnover intention. Managers and human resource development professionals could play a pivotal role in retention of these knowledge workers by building better practices related to organizational culture, providing job redesign, and engaging in other employee developmental practices such as coaching.     

Neoliberal homophobic discourse: heteronormative human capital and the exclusion of queer citizens

In this article, I examine the relationship between homophobic language use and its broader social context, focusing on how a U.S.-based, conservative Christian organization's institutionalized homophobic text-making practices seek to derive legitimacy from the broader political economic discourses associated with the neoliberal moment. Using the Family Research Council's statement on marriage and the family as the basis for analysis, I demonstrate how the organization seeks to represent lesbian and gay subjects and their kinship formations as a threat to human capital development because they are based on affectional relationships that neither reflect nor respond to the kinds of self-governance and marketization that neoliberalism requires of all citizen-subjects and their families. Linguistic strategies for creating such representations include lexical choices that avoid overtly identifying lesbian and gay subjects as the object of discussion, the creation of a taxonomy for what constitutes "proper" families-based on neoliberal principles--that implicitly excludes lesbian and gay kinship formations, and the use of neoliberal discourses of self-governance and marketization as the basis for that exclusion.     

Internalized homophobia, lesbian identity development, and self-esteem in undergraduate women

This study examined the relationship between internalized homophobia, self-esteem, and lesbian identity development in 35 undergraduate women. Results indicated evidence of a strong relationship between the two identity development measures, the Stage Allocation Measure (SAM; Cass, 1984) and the Gay Identity Questionnaire (GIQ; Brady & Busse, 1994), and moderate relationships between identity development and internalized homophobia, between identity development and self-esteem, and between internalized homophobia and self-esteem. Implications for research and clinical practice are discussed.     

Three Ways to Be Happy: Pleasure,Engagement, and Meaning—Findings from Australian and US Samples

This study examined the contributions of orientations to happiness (pleasure, engagement and meaning) to subjective well-being. A sample of 12,622 adults from the United States completed on-line surveys measuring orientations to happiness, positive affect, negative affect, and life satisfaction. A sample of 332 adults from Australia also completed these surveys as well as a measure of the big five factor personality traits. Hierarchical regressions generally supported the hypothesis that the three orientations to happiness predict subjective well-being (satisfaction with life, positive affect and negative affect) beyond sociodemographic variables and personality. Meaning and engagement explained the greatest variance in all three components of subjective well-being. Overall, these findings support the importance of a eudaimonic approach in addition to the hedonic approach to achieving happiness. Moreover, findings were relatively consistent in both the Australian and US samples. Some of these data were presented at the 8th Australian Centre on Quality of Life Conference, Melbourne, Australia.     

Differences Between African Americans and Non-Hispanic Whites Utilization of Clergy for Counseling with Serious Personal Problems

There is a paradox in research on African Americans and non-Hispanic whites in the utilization of clergy. Research finds that African Americans have higher levels of religious service attendance and higher levels of contact with clergy. Research also finds that despite this, African Americans are less likely than non-Hispanic whites to seek out assistance from clergy for psychiatric disorders including depression and anxiety. The goal of this paper was to investigate race differences in the use of clergy for counseling for serious personal problems. It uses the National Survey of American Life. We find that non-Hispanic whites were more likely than African Americans to use clergy for a serious personal problem. The significant difference between African Americans and non-Hispanic whites appeared to be mediated by the fact that African Americans were more likely to have seen clergy in a religious setting and non-Hispanic whites were more likely to have seen clergy in other settings including hospitals.     

Variables related to patterns of union Stewards’ commitment

This article examines whether the union and employer commitment of stewards can be predicted by the same antecedent factors and whether any o f those factors are related to dual or unilateral commitment. It modifies a conceptual framework of organizational commitment to recognize the presence of a union and then applies that framework to both union and employer commitment. The analysis found that the predictors of union and employer commitment were mostly different, and structural characteristics of the union, employer, and work significantly differentiated between stewards with high and low dual commitment and between standards with high and low unilateral commitment.     

The Historical Context of the Evolution of National Research Systems and International RTD Collaboration

A historical overview of European science and technology suggests the existence of two parallel trends: those of nationalization and de-nationalization. Since the Enlightenment, besides the modernist universalist perspective on science we find nationalist pressures pushing the idea of socially constructed technology, thus generating scientific results determined by national (cultural) factors. Nationalization and de-nationalization thrive together in certain circumstances--for instance, in disciplines such as geology, meteorology, botany or even physics and chemistry. The entry into the scene of commercial interests gives rise to national interests, in turn hampering efficiency and progress from the scientific perspective. Through national research policies these differential development patterns have tended to create an often unnecessary conflict between basic and applied research. The EU RTD framework has still to resolve these contradictions.