Optimal orthogonal block designs for four-mixture components in two blocks based on F-squares for Becker's models and K-model

Orthogonal block designs in mixture experiments have been extensively studied by various authors. Aggarwal et al. [M.L. Aggarwal, P. Singh, V. Sarin, and B. Husain, Mixture designs in orthogonal blocks using F-squares, METRON – Int. J. Statist. LXVII(2) (2009), pp. 105–128] considered the case of components assuming the same volume fractions and obtained mixture designs in orthogonal blocks using F-squares. In this paper, we have used the class of designs presented by Aggarwal et al. and have obtained D-, A- and E-optimal orthogonal block designs for four components in two blocks for Becker's mixture models and K-model, respectively. Orthogonality conditions for the considered models are also given.     

Retrieving the religion in racialization: A critical review

Scholars across disciplines have argued that race and religion are co‐constituted in part because of their historical relationship. The concept of racialization, particularly as it is housed in racial formation theory, is the way that most empirical research in sociology has approached analysis of this co‐constitution. Such analysis however is often at the expense of empirically accounting for the historical relationship between race and religion. In this article, I argue for stronger empirical consideration of this historical relationship in research on racialization. I discuss what is at stake in deeper empirical analysis and what scholars gain by using religion as a starting point to understand racialization today.     

A Systematic Review of African-Centered Therapeutic Interventions with Black American Adults

Clinical Social Work Journal - While substantial theoretical literature and growing evidence support the benefits of employing African-centered approaches with Black youth, research examining the...     

African-Centered Frameworks of Youth Development: Nuanced Implications for Guiding Social Work Practice with Black Youth

Child and Adolescent Social Work Journal - Literature within social work on African-centered frameworks that can be used to inform research and social work practice has remained limited. Often...     

Is Health Wealth? Results of a Panel Data Analysis

The objective of this paper is to determine whether health (measured by life expectancy at birth) contributes to economic growth and the functional form in which it influences per capita income. This links our study to the debate between neo-classical and endogenous growth theorists on whether investment in human capital can sustain growth indefinitely. Data on 216 countries for the period 1980–2009 has been obtained from World Development Indicators dataset. This enables us to focus on a period characterized by globalization and demographic transition manifested in the form of population graying. Our findings confirm the importance of investment in human capital. But, in contrast to conclusions of endogenous growth models, we find evidence that benefit from increasing longevity tapers off. We conclude by pointing out that it is necessary to extend this study further by incorporating other dimensions of health that are not captured by life expectancy.     

The American Islamic Community: Which Muslims are Likely to be Encouraged by Other People?

ABSTRACT

Encouragement—or expressions of support designed to instill perseverance and hope in the face of challenging circumstances—is an important concept in the strengths perspective and a central feature of social work practice. Encouragement may be a particularly significant factor for Muslims living in post-9/11 America. Yet, little research has examined this topic despite its relevance. To address this gap in the literature, this cross-sectional study employed a community sample of Muslims (N = 274) to identify which Muslims are disproportionately likely to report receiving expressions of support from other people. The results of the logistic regression indicated that Muslims who were single, Middle Eastern, non-Sunni, and frequent Mosque attenders, were more likely to receive expressions of support compared to those who were married, European American, Sunni, and less frequent Mosque attenders. Conversely, Muslims without a 4-year college education and born aboard were less likely to receive expressions of support compared to those with a graduate degree and born in the US. The paper concludes by offering a tentative explanation for the results and suggesting some implications for practice with Muslim clients. Future researchers might build upon the findings by replicating the study with nationally representative samples.     

Debatable Marriages: Marriage and Child Marriage in Saudi Arabia

ABSTRACT

This article examines marriage and the constitution of familial relationships in Saudi Arabia, with a specific focus on one form of marriage that has recently become an issue of public, political, and religious discussion, that of “child marriage.” The situation within Saudi Arabia is compared with gendered relationships in other countries, most notably those in Western Europe, with specific attention given to the United Kingdom. It is argued that policy developments in Saudi Arabia need to be seen in the context of wider Saudi culture, Sharia law, and religious interpretations of the Koran.     

EMDR with First-Generation College Students At-Risk of Facing a Forced Marriage

Clinical Social Work Journal - In forced marriage cases, individuals and couples are coerced by emotional and physical violence into marriage and risk ostracization from their community. Often...     

Orthogonally blocked mixture component–amount designs via projections of F-squares

Orthogonal block designs for Scheffé’s quadratic model have been considered previously by Draper et al. (1993), John (1984), Lewis et al. (1994) and Prescott, Draper, Dean, and Lewis (1993). Prescott and Draper (2004) obtained mixture component–amount designs via projections of standard mixture designs, viz., the simplex-lattice, the simplex-centroid and the orthogonally blocked mixture designs based on latin squares. Aggarwal, Singh, Sarin, and Husain (2009) considered the case of components assuming equal volume fractions and obtained mixture designs in orthogonal blocks using F-squares. In this paper, we construct orthogonal blocks of two and three mixture component–amount blends by projecting the class of four component mixture designs presented by Aggarwal et al. (2009).