Information matrix for a mixture of two Laplace distributions

The Fisher information matrix for a mixture of two Laplace distributions is derived. Numerical tabulations of the matrix and a computer program are provided for practical purposes. The work is motivated by two real–life examples discussed in Hsu (Appl Stat 28:62–72, 1979) and Bhowmick et al. (Biostatistics 7:630–641, 2006).      

Parent-child relationships between Korean American adolescents and their parents

This cross-sectional correlational study examined the association between Korean American adolescents' and their parents' reports of parent-child relationships. A total of 61 Korean American families completed a questionnaire assessing parental knowledge, parental/filial self-efficacy, parent-child communication, and parent-child conflicts. T tests, Pearson's correlations, a scatter diagram, and bivariate regression were used to analyze the data. Both Korean American adolescents and their parents reported that fathers were less knowledgeable about their child's school life and less likely to communicate with their children than were mothers. Fathers reported a significantly lower level of parental self-efficacy than mothers, and adolescents also reported a significantly higher level of filial self-efficacy in mother-child relationships than in father-child relationships. Positive correlations between parents' and adolescents' reports of parent-child relationships were observed. These findings indicated a need for parent education programs or counseling services for Korean American parents of adolescents, particularly fathers with inadequate parental skills and limited communication with their children.     

Improving the Progress of Research & Development (R&D) Projects by Selecting an Optimal Alliance Structure and Partner Type

This paper extends the study of alliance governance structure by examining what alliance structure, coordination mechanisms and partner type best enhance the likelihood of Research and Development (R&D) progress or performance. We specially focus on the coordination and interaction mechanism of alliances, through which we classify the alliance governance structures in order to reflect the more complex alliance types and contracts used in today's R&D. Using data from 255 biopharmaceuticals between the years 2000 and 2004, we found that, ceteris paribus, a moderate degree of inter‐partner interaction and a moderately complex (non‐equity‐based) alliance contract contributes more to a better R&D alliance performance than those structures that are too simple or too organizationally embedded (e.g. equity joint ventures), which possibly increase the risk of misalignment and miscommunication between allies. In addition, due to the reduced opportunism and the diverse resource (e.g. technology) pooled in the alliance, allying with diverse organizational partners such as non‐profit research institutes and universities is more likely to enhance the R&D performance. Our findings provide insightful strategic implications to practitioners in designing an appropriate alliance governance structure and choosing the right partner type for a successful R&D collaboration.     

The mediating role of leadership and people management practices on HRD and organizational performance

Drawing upon prior research, we identify strategic value and transaction effectiveness as two significant HRD contributions and examine their dyadic effect on leadership and people management practices, and influence on firm performance. Results of path analysis on 138 participants supported the dyadic effect hypothesis. More significantly, we found leadership and people management practices as a significant predictor on the relationship between strategic value and organizational performance, which suggests that organizational performance is affected by the combined effect of leadership and people management practices. A key implication of this research is that where organizations had effective leadership and people management practices, both types of HRD contributions – strategic value and transaction effectiveness – significantly enhanced firm performance.     

Supply Networks as a Complex Adaptive System: Toward Simulation‐Based Theory Building on Evolutionary Decision Making

In this article, we examine how the firms embedded in supply networks engage in decision making over time. The supply networks as a complex adaptive system are simulated using cellular automata (CA) through a dynamic evolution of cooperation (i.e., “voice” decision) and defection (i.e., “exit” decision) among supply network agents (i.e., firms). Simple local rules of interaction among firms generate complex patterns of cooperation and defection decisions in the supply network. The incentive schemes underlying decision making are derived through different configurations of the payoff‐matrix based on the game theory argument. The prisoner's dilemma game allows capturing the localized decision‐making process by rational agents, and the CA model allows the self‐organizing outcome to emerge. By observing the evolution of decision making by cooperating and defecting agents, we offer testable propositions regarding relationship development and distributed nature of governance mechanisms for managing supply networks.     

From austria to the united states and from evaluating therapists to developing cognitive resources theory: An interview with fred fiedler

The following interview represents the start of a series of interviews with researchers who have had a major impact on the field of leadership. Through these interviews we want to obtain a sense of the person behind the researcher, a few comments on the person's research ideas, and some insights on the state of the field. In addition, we have asked some of the people who worked with Dr. Fiedler to comment on what it was like to work with and for him. We will try to do this for other interviewees as well. We believe this interview is timely as Dr. Fiedler is this year's recipient of the James McKeen Cattell Award of the American Psychological Society.     

“抗战通俗”:抗战文艺的“变格”叙事

抗战的严峻态势促使战时文艺工作者积极抛却成见,广泛汲取一切有益因子,借以最大程度地进行抗日宣传.于是通俗文艺也被纳入“抗战”叙事的洪流,并由此创生出崭新的“抗战通俗”类“变格”叙事.此类“变格”叙事不仅通过“叙事回避”达到了“叙事动员”的目的,而且更展现出了抗战文艺的多样风姿.     

International Migration and Educational Assortative Mating in Mexico and the United States

This paper examines the relationship between migration and marriage by describing how the distributions of marital statuses and assortative mating patterns vary by individual and community experiences of migration. In Mexico, migrants and those living in areas with high levels of out-migration are more likely to be in heterogamous unions. This is because migration increases the relative attractiveness of single return migrants while disproportionately reducing the number of marriageable men in local marriage markets. In the United States, the odds of homogamy are lower for migrants compared with nonmigrants; however, they do not vary depending on the volume of migration in communities. Migrants are more likely than nonmigrants to “marry up” educationally because the relatively small size of this group compels them to expand their pool of potential spouses to include nonmigrants, who tend to be better educated than they are. Among migrants, the odds of marrying outside of one’s education group increase the most among the least educated. In Mexican communities with high rates of out-migration, the odds of marrying outside of one’s education group are highest among those with the highest level of education. These findings suggest that migration disrupts preferences and opportunities for homogamy by changing social arrangements and normative climates.     

A Qualitative Study of Victim Offender Mediation: Implications for Social Work

Restorative justice has grown extensively in recent years. However, existing research data indicate a lack of information regarding its process. This qualitative study aimed at providing an understanding of the experiences of participants in the delivery process. In addition to observation, 34 face-to-face interviews were conducted with 37 individuals. Analyses yielded important insights into multiple layers of participants' experiences. Though the participants indicated having had positive experiences, some insensitive approaches toward victims were also pointed out. This article discusses the implications in moving toward victim-sensitive restorative justice and for the social work profession.