A Random Coefficient Degradation Model With Ramdom Sample Size

In testing product reliability, there is often a critical cutoff level that determines whether a specimen is classified as failed. One consequence is that the number of degradation data collected varies from specimen to specimen. The information of random sample size should be included in the model, and our study shows that it can be influential in estimating model parameters. Two-stage least squares (LS) and maximum modified likelihood (MML) estimation, which both assume fixed sample sizes, are commonly used for estimating parameters in the repeated measurements models typically applied to degradation data. However, the LS estimate is not consistent in the case of random sample sizes. This article derives the likelihood for the random sample size model and suggests using maximum likelihood (ML) for parameter estimation. Our simulation studies show that ML estimates have smaller biases and variances compared to the LS and MML estimates. All estimation methods can be greatly improved if the number of specimens increases from 5 to 10. A data set from a semiconductor application is used to illustrate our methods.     

Research on leadership in a cross-cultural context: Making progress, and raising new questions

It is almost cliché to say that there has been an explosion in the amount of research on leadership in a cross-cultural context. In this review, we describe major advances and emerging patterns in this research domain over the last several years. Our starting point for this update is roughly 1996–1997, since those are the dates of two important reviews of the cross-cultural leadership literature [specifically, House, Wright, and Aditya (House, R. J., Wright, N. S., & Aditya, R. N. (1997). Cross-cultural research on organizational leadership: A critical analysis and a proposed theory. In: P. C. Earley, & M. Erez (Eds.), New perspectives on international industrial/organizational psychology (pp. 535–625). San Francisco, CA) and Dorfman (Dorfman, P. W. (1996). International and cross-cultural leadership research. In: B. J. Punnett, & O. Shenkar (Eds.), Handbook for international management research, pp. 267–349, Oxford, UK: Blackwell)]. We describe the beginnings of the decline in the quest for universal leadership principles that apply equivalently across all cultures, and we focus on the increasing application of the dimensions of culture identified by Hofstede [Hofstede, G. (1980). Culture's consequences: International differences in work-related values (Abridged ed.). Newbury Park, CA: Sage] and others to describe variation in leadership styles, practices, and preferences. We also note the emergence of the field of cross-cultural leadership as a legitimate and independent field of endeavor, as reflected in the emergence of publication outlets for this research, and the establishment of long-term multinational multi-investigator research programs on the topic. We conclude with a discussion of progress made since the two pieces that were our departure point, and of progress yet to be made.     

Workers' compensation for psychological injury: personal and environmental correlates

The aim of this study was to determine the personal and environmental factors that contribute to the lodging of a workers' compensation claim for psychological injury. Four groups were compared: individuals who had lodged a workers' compensation claim, people who had sought psychological assistance for the management of work-related stress reactions but who had not lodged a workers' compensation claim; people who had experienced stress symptoms but who had not lodged a claim or sought help; and people who experienced stressful work events but who had not developed symptoms. Examination was made of cognitive distortion, irrational beliefs and coping resources as individual factors, and stressful life events, daily hassles and work environment factors as environmental variables. The Compensation group was distinguished from other groups only on the basis of work environmental factors. The implications of these results in the understanding of the decision to lodge a workers' compensation claim are considered.     

Addressing the disproportionate representation of children of color: a collaborative community approach

The state of Indiana recommended a committee be formed to address the disproportional representation of black youth in out-of-home placements. In response, the Indiana Disproportionality Committee (IDC) was established. This article presents the development, objectives and future of the IDC. One of the objectives, research, will be offered as an example of the committee's collaborative strategies. The IDC, in partnership with another organization, has begun exploring relationships between ethnicity, risk factors and treatment outcomes. The results of this research effort have examined disproportion and disparity, leading the IDC to identify needs for change within the state. Barriers and successes of the IDC will be shared, so that others can use these efforts to guide their own strategies to reduce disproportionality.     

Mexican Solidarity: Findings from a National Study

This article presents the results of a two-year nationwide study presenting the structure and methodology utilized for the National Survey on Solidarity and Volunteer (ENSAV), one of the first national volunteer surveys ever undertaken in Mexico. This study is designed in two distinct segments to be able to engage all formal and informal volunteering in Mexico. The first segment is the analysis of a nationwide survey which presents the main data and findings plus the analysis of these numbers. The second segment reveals some of the main motivations that individuals have for giving and for participating both within and outside of group settings. The national nature of this research project reveals interesting patterns of volunteerism and citizen action by gender, location, and motivation, plus various forms of solidary participation that may be useful guides in the prevailing need to build and strengthen civil society organizations in Mexico and in this region of the world. These results provide an informed basis for decision making in the government public policy arena and reveal distinct and diverse ways for established CSOs to promote and enable citizens for more effective participation in community issues (Butcher, Springer, 2010).     

Navigating Peace and Security: Women and Social Capital in Iraq

This article examines international, national and local interpretations of women's engagement in peace and security processes. In 2000, the international community formally recognized the importance of women's equal participation in maintaining and promoting peace and security via UN Security Council Resolution 1325 (UNSCR 1325). National governments subsequently enacted National Action Plans to pursue the goals of UNSCR 1325, including one established in Iraq in 2014. Iraq's National Action Plan prioritizes the reform of legal and political institutions, and this article seeks to understand whether this approach resonates with Iraqi women. Based on fieldwork conducted in northern Diyala, it examines how Iraqi women perceive, access and exert influence over peace and security mechanisms, and how their approach compares with the strategies identified by the National Action Plan and UNSCR 1325.     

Covering up Disfigurement and Laughing it Off: Reinforcing Inequality in Breast Cancer Support Groups

The present study examines how women in breast cancer support groups managed the emotions evoked by the physical disfigurement of their disease and its treatment. Four support groups located in central North Carolina were studied over an approximately three‐year period. Data derive from field observation of the four groups, in addition to 35 in‐depth interviews with group members and group leaders. Analysis shows how the women concealed their disfigurement, practiced compensatory femininity, and engaged in sexualized joking to cope with the embarrassment, shame, and self‐doubt resulting from changes to their bodies, including the loss of a breast and sometimes hair. While these strategies seemed to help the women feel better about themselves and their bodies, at least some of the time, analysis also shows how the strategies contributed to the reproduction of gender inequality, by reinforcing traditional standards of beauty and the gendered expression of emotions.     

Vulnerable Emotional Expression In Emotion Focused Couples Therapy: Relating Interactional Processes To Outcome

This study examined whether interactions characterized by high expression of emotional vulnerability in one partner followed by a highly supportive response style by the other partner predicted greater improvement on domains of forgiveness, unfinished business, trust, and relationship satisfaction in a sample of 32 couples presenting for Emotion Focused Couples Therapy with unresolved emotional injuries. For each outcome measure, two separate hierarchical regression models were tested (injured partner vulnerability and offending partner supportiveness; offending partner vulnerability and injured partner supportiveness). Both models significantly predicted improvement on the majority of outcome measures. Practice suggestions for working with emotionally injured couples are provided in light of the findings.