Generalized Diameters and Rabin Numbers of Networks

Reliability and efficiency are important criteria in the design of interconnection networks. Recently, the w-wide diameter d_w(G), the (w – 1)-fault diameter D_w(G), and the w-Rabin number r_w(G) have been used to measure network reliability and efficiency. In this paper, we study d_w(G), D_w(G) and r_w(G) using the strong w-Rabin number r_w ^*(G) for 1 w k(G) and G is a circulant network G(d_n; {1, d,..., d^{n –1}}), a d-ary cube network C(d, n), a generalized hypercube GH(m_{n – 1},..., m0), a folded hypercube FH(n) or a WK-recursive network WK(d, t).     

Sortabilities of Partition Properties

Consider the partition of a set of integers into parts. Various partition properties have been proposed in the literature to facilitate the restriction of the focus of attention to some small class of partitions. Recently, Hwang, Rothblum and Yao defined and studied the sortability of these partition properties as a tool to prove the existence of a partition with such a property in a given family. In this paper we determine the sortability indices of the seven most interesting properties of partitions providing a complete solution to the sortability issue.     

Androgen and psychosexual development: core gender identity, sexual orientation and recalled childhood gender role behavior in women and men with congenital adrenal hyperplasia (CAH)

We assessed core gender identity, sexual orientation, and recalled childhood gender role behavior in 16 women and 9 men with CAH and in 15 unaffected female and 10 unaffected male relatives, all between the ages of 18 and 44 years. Women with congenital adrenal hyperplasia (CAH) recalled significantly more male-typical play behavior as children than did unaffected women, whereas men with and without CAH did not differ. Women with CAH also reported significantly less satisfaction with the female sex of assignment and less heterosexual interest than did unaffected women. Again, men with CAH did not differ significantly from unaffected men in these respects. Our results for women with CAH are consistent with numerous prior reports indicating that girls with CAH show increased male-typical play behavior. They also support the hypotheses that these women show reduced heterosexual interest and reduced satisfaction with the female sex of assignment. Our results for males are consistent with most prior reports that boys with CAH do not show a general alteration in childhood play behavior. In addition, they provide initial evidence that core gender identity and sexual orientation are unaffected in men with CAH. Finally, among women with CAH, we found that recalled male-typical play in childhood correlated with reduced satisfaction with the female gender and reduced heterosexual interest in adulthood. Although prospective studies are needed, these results suggest that those girls with CAH who show the greatest alterations in childhood play behavior may be the most likely to develop a bisexual or homosexual orientation as adults and to be dissatisfied with the female sex of assignment.     

The Cognitive Analysis of Competitive Structures: A Review and Critique

In recent years, there has been a growth ofinterest in the study of business competition from acognitive perspective. This paper reviews this rapidlyexpanding literature in order to synthesize keyempirical findings and identify significant theoreticaland methodological issues which warrant furtherinvestigation. It is argued that the notion ofcompetitive enactment and the associated cognitive lifecycle approach recently advanced by Porac and hisassociates (Porac, Thomas, & Baden-Fuller, 1989; Porac& Thomas, 1990; Levenhagen, Porac, & Thomas, 1993)represent a potentially major breakthrough in ourunderstanding of the dynamics of competition in industriesand markets. However, several important propositions arederived for which the currently available empiricalevidence is found wanting. Furthermore, a number of methodological hurdles are identified whichhave yet to be overcome if the validity of thesepropositions is to be investigated with an acceptabledegree of rigor.     

Multimedia Benchmarking Analysis for Three Risk Assessment Models: RESRAD, MMSOILS, and MEPAS

This paper is one in a series that describes results of a benchmarking analysis initiated by the Department of Energy (DOE) and the United States Environmental Protection Agency (EPA). An overview of the study is provided in a companion paper by Laniak et al. presented in this journal issue. The three models used in the study—RESRAD (DOE), MMSOILS (EPA), and MEPAS (DOE)—represent analytically-based tools that are used by the respective agencies for performing human exposure and health risk assessments. Both single media and multimedia benchmarking scenarios were developed and executed. In this paper, the multimedia scenario is examined. That scenario consists of a hypothetical landfill that initially contained uranium-238 and methylene chloride. The multimedia models predict the fate of these contaminants, plus the progeny of uranium-238, through the unsaturated zone, saturated zone, surface water, and atmosphere. Carcinogenic risks are calculated from exposure to the contaminants via multiple pathways. Results of the tests show that differences in model endpoint estimates arise from both differences in the models' mathematical formulations and assumptions related to the implementation of the scenarios.     

The Politics of Recognition: Jewish Refugees in Relief Policies and Human Rights Debates, 1945–1950

This essay analyses the place of Jewish survivors in the refugee system established by the West in the aftermath of the Second World War. Departing from the literature of trauma and mourning, this article addresses Holocaust survivors as migrant refugees subjected to international categorisations, relief policies and human rights debates. Between 1945 and 1950, Jewish refugees were recognised as an ideal-type community of victims by western humanitarianism. Recognition entailed symbolic and material entitlements, and eventually rewarded Holocaust survivors with historical, political and territorial vindication. As opposed to other refugee groups who entered the market of international compassion in the 1940s, Jewish refugees were granted full status of political victims.     

Between a Rock and a Hard Place: Child Welfare Practice and Social Work Education

Social work in the field of child welfare is complex and full of challenges. In British Columbia Canada, the Ministry of Children and Family Development, which is the main employer of social workers, entered a partnership with universities to educate baccalaureate social work students in a child welfare specialization. This paper examines an instructional approach to child welfare education at the University of Northern British Columbia. The geography of the university region as well as the need to maintain a critical standpoint presented challenges in the delivery of a child welfare specialization course. The development of an online child welfare practice course assisted the university in meeting the challenges. This paper describes the practice context for social workers in British Columbia as well as the design of the online course offered to social work students at the University of Northern British Columbia.