Optimal superimposed codes and designs for Renyi''s search model

Renyi (Bull. Amer. Math. Soc. 71 (6) (1965) 809) suggested a combinatorial group testing model, in which the size of a testing group was restricted. In this model, Renyi considered the search of one defective element (significant factor) from the finite set of elements (factors). The corresponding optimal search designs were obtained by Katona (J. Combin. Theory 1 (2) (1966) 174). In the present work, we study Renyi's search model of several significant factors. This problem is closely related to the concept of binary superimposed codes, which were introduced by Kautz and Singleton (IEEE Trans. Inform Theory 10 (4) (1964) 363) and were investigated by D'yachkov and Rykov (Problems Control Inform. Theory 12 (4) (1983) 229), Erdos et al. (Israel J. Math. 51 (1–2) (1985) 75), Ruszinko (J. Combin. Theory Ser. A 66 (1994) 302) and Furedi (J. Combin. Theory Ser. A 73 (1996) 172). Our goal is to prove a lower bound on the search length and to construct the optimal superimposed codes and search designs. The preliminary results have been published by D'yachkov and Rykov (Conference on Computer Science & Engineering Technology, Yerevan, Armenia, September 1997, p. 242).     

From Philanthropy to Social Welfare,Philip Klein. San Francisco,Jossey-Bass Inc., 1968. 307 Pages. $8.50 Hardbound

Interdisciplinary collaboration of health care professionals is necessary if quality health care is to be assured. Social work's concern for the social functioning of human beings should be reflected in its organization of health-care services. To achieve this end, social work education should be structured to prepare students for collaborative activities. This paper describes the process and difficulties of planned change undertaken at the Wayne State University School of Social Work with other health-related schools, in the conception, design, and implementation of an interdisciplinary course and practicum for graduate social work and nursing students.     

Developmental Theory: A Yardstick for Ethnic Minority Content

Knowledge pertaining to ethnicity and culture within the social work curriculum is incorporated currently on a fragmented basis. Often this knowledge is presented from the narrow view of personality theory. Oversimplifications and gross generalizations of cultural variables of ethnic minority groups are present. This paper presents three significant theoretical constructs from developmental theory—the societal-institutional facet, the group-interactional facet and the individual-psychological facet—as a framework to aid in the identification and incorporation of ethnic minority content within the social work curriculum.     

Which Neuropsychiatric Disorder Is More Associated With Divorce?

The social disruption experienced by people with neuropsychiatric disorders may be pervasive and manifest in divorce. It has been estimated that 90% of marriages involving a partner with bipolar disorder culminate in divorce. To verify this information we studied the results of the 2004 National Nursing Home Survey. We found that the percentage of divorced residents was 7%. However, “lonesome” status (widowed, divorced, separated, never married, and single) was prevailing in 79% of residents. The rates of divorce were highest among bipolar, paranoid, and schizophrenic residents (18%, 12%, and 12%, respectively). Lonesome status was also highest among bipolar, paranoid, and schizophrenic residents (85%, 84%, and 83%, respectively). Never married status was highest among those with schizophrenia, obsessive-compulsive residents, and bipolar patients (12%, 12%, and 11%, respectively). We conclude that shizophrenic and bipolar patients are very likely to never get married or to end up divorced.     

An Exploratory Study of the Effects of Teacher Attractiveness on Undergraduates' Perceptions of Teacher–Student Sexual Involvement

This study explored whether the attractiveness of a teacher affected perceptions of teacher sexual misconduct. Respondents (120 female and 108 male undergraduates) read scenarios depicting teacher sexual misconduct varied by gender dyad (male teacher–female student and female teacher–male student) and two levels of attractiveness (very attractive or ordinary looking). The attractiveness of the teacher had little impact on respondents' perceptions. Significant interactions emerged on most variables between respondent gender and gender dyad. Specifically, male respondents tended to view the female teacher–male student dyad as less negative than the male teacher–female student dyad. Female respondents generally did not make a distinction based on the gender dyad.     

Father–Daughter Incest: Data from an Anonymous Computerized Survey

Retrospective data were entered anonymously by 1,521 adult women using computer-assisted self-interview. Nineteen were classified as victims of father–daughter incest, and 241 were classified as victims of sexual abuse by an adult other than their father before reaching 18 years of age. The remaining 1,261 served as controls. Incest victims were more likely than controls to endorse feeling damaged, psychologically injured, estranged from one or both parents, and shamed by others when they tried to open up about their experience. They had been eroticized early on by the incest experience, and it interfered with their adult sexuality. Incest victims experienced coitus earlier than controls and after reaching age 18 had more sex partners and were more likely to have casual sex outside their primary relationship and engage in sex for money than controls. They also had worse scores on scales measuring depression, sexual satisfaction, and communication about sex than controls.     

Building the Unsettling Force: Social Workers and the Struggle for Human Rights

Community organizing for human rights provides a platform for social workers to be actively engaged in dismantling systems of oppression. Using a case study of Women In Transition, this article emphasizes strategies for organizing for economic human rights, including opportunities and challenges in using the human rights framework. Recommendations and implications for the social work profession are discussed.     

Book reviews

Review Symposium: Cross‐Cultural Roots of Minority Child Development. P.M. Greenfield & R. R. Cocking (Eds.). Hillsdale, NJ: Lawrence Erlbaum, 1994. 431 pp. $89.95, $39.95 (paper).

Understanding Practice. S. Chaiklin and J. Lave (Eds.). Cambridge: Cambridge University Press, 1993. 414 pp. $59.95.     

The use of population‐level data to advance interdisciplinary methodology: a cell‐through‐society sampling framework for child development research

The authors argue that population‐level data should be used to advance interdisciplinary research about community effects on early development. These data permit the identification of neighborhoods in which development patterns deviate from predictions based on local socioeconomic status (SES). So‐called ‘off‐diagonal’ places signal where researchers are likely to discover processes that either deflect the risks of low SES or dampen the salutary impact of favorable SES. Since such neighborhoods will be best understood relative to nearby ‘on‐diagonal’ neighborhoods where macro‐economic and/or public policy factors are constant, the authors present a methodology for illuminating these regional clusters. The method is deployed in British Columbia, Canada, where a team has collected developmental observations from two censuses of kindergarten children (n = 82,632). The article discusses how these clusters can be used to coordinate sampling decisions among academics representing the range of disciplines needed to study child development from cell‐through‐society, as is recommended in the literature.