The School Experiences of Same-Sex Attracted Students in the 14- to 19-Year-Old Secondary Sector in England: Within and Beyond the Safety and Tolerance Framework

SUMMARY

This article examines the social and political context within which lesbian, gay and bisexual (LGB) youth find themselves and, in doing so, a number of key issues are identified which have profound implications for the functions and responsibilities of schools in the United Kingdom. This article also considers how one secondary school and one Sixth Form College in south-east England are facilitating the gradual visibility of LGB students within a framework of safety and tolerance. In addition, attention is focussed on homophobic victimization identified by students and their experiences when disclosing sexual identity. Methods of data collection are outlined including focus groups with adolescent LGB identifying students, and a questionnaire survey distributed to 116 students (both heterosexual and LGB). Methodological issues are considered together with the difficulties of accessing same-sex attracted respondents and the ethical considerations which emerge as a consequence. Implications for policy and practice within the 14- to 19-year-old secondary sector and the possibility of moving beyond the framework of safety and tolerance are examined.     

Using housing growth to estimate habitat change: detecting Ovenbird response in a rapidly growing New England State

Numerous measures of human influence on the environment exist, but one that is of particular importance is houses as they can impact the environment from species through the landscape level. Furthermore, because the addition of houses represents an important component of landscape change, housing information could be used to assess ecological responses (e.g., decline in wildlife habitat) to that change. Recently developed housing density data represents a potential source of information to assess landscape and habitat change over long periods of time and at broad spatial extents, which is critically needed for conservation and management. Considering the potential value of housing data, our goal was to demonstrate how changes in the number of houses leads to changes in the amount of habitat across the landscape, and in-turn, how these habitat changes are likely to influence the distribution and abundance for a species of conservation concern, the Ovenbird (Seiurus aurocapillus). Using a relationship between Ovenbird abundance and housing density, we predict suitable habitat in the forests of Massachusetts (USA) from 1970 to 2030. Over this 60-year period, the number of houses was projected to increase from 1.84 to 3.32 million. This magnitude of housing growth translates into a 57 % decline in Ovenbird habitat (6,002 km² to 2,616 km²), a minimum decline of ~850,000 (48 %) Ovenbirds, and an increase in the number of subpopulations across the landscape. Overall, housing data provide important information to robustly measure landscape and habitat change, and hence predict population change of a species. We suggest that time series of housing data linked to ecological responses (e.g., Ovenbird abundance) offers a novel and underutilized approach to estimating long-term and spatially broad predictions of ecosystem response to landscape change, which in turn can inform conservation and management.     

Male labor force participation revisited

This paper evaluates hypotheses which incorporate designated socioeconomic variables and male age specific incidences of labor force participation. Salient independent variables include education, net migration, unemployment, and earnings. The multiple regression method of analysis is utilized with 100 Standard Metropolitan Statistical Areas comprising the basic units of a cross-sectional analysis. Regression results generally substantiate hypotheses and concur with the findings of previous investigators. But, in contrast to earlier studies, education and net migration emerge as leading determinants of areal labor force patterns; and regression results for men in central age groups are impressive both in terms of the frequency of statistically significant relationships and size of coefficients of determination. These departures from the results of past research are possibly due to the implementation of a more meaningful and rigorous methodology.     

Mothers and children alone: The stamp of poverty

The contributions from a variety of potential sources of emotional and economic support are evaluated as well as their impact on female-headed households in a university community. A qualitative, in-depth interview investigation of 36 single mothers is summarized; illustrative quotations and marginal tabulations are provided.The single mothers considered in this study report great difficulty in balancing their own needs for a social life with the needs of their children. These low-income mothers are well educated; their life situations can only be described by the word struggle. Same-sex friends offer considerable support, but economic and child care needs stand out strongly as needs that are often unmet. Their dependency on the welfare system is determined to be an interim need. Mothers in this sample were trying to find work, go to school, and parent while maintaining some social life for themselves and for their children. Coping strategies are discussed, as are the strengths of mother-headed families.Barbara Goldfarb is a social worker at Victim Services Agency, New York, New York, and Roger W. Libby is a professor at the Center for the Family, Division of Home Economics, University of Massachusetts, Amherst, MA. A University of Massachusetts Faculty Research Grant to Roger W. Libby supported this study.     

The Flow Shop Scheduling Polyhedron with Setup Times

This paper addresses the problem of improving the polyhedral representation of a certain class of machine scheduling problems. Despite the poor polyhedral representation of many such problems in general, it is shown that notably tighter linear programming representations can be obtained for many important models. In particular, we study the polyhedral structure of two different mixed-integer programming formulations of the flow shop scheduling problem with sequence-dependent setup times, denoted by SDST flow shop. The first is related to the asymmetric traveling salesman problem (ATSP) polytope. The second is less common and is derived from a model proposed by Srikar and Ghosh based on the linear ordering problem (LOP) polytope. The main contribution of this work is the proof that any facet-defining inequality (facet) of either of these polytopes (ATSP and LOP) induces a facet for the corresponding SDST flow shop polyhedron. The immediate benefit of this result is that all developments to date on facets and valid inequalities for both the ATSP and the LOP can be applied directly to the machine scheduling polytope. In addition, valid mixed-integer inequalities based on variable upper-bound flow inequalities for either model are developed as well. The derived cuts are evaluated within a branch-and-cut framework.     

A Probabilistic Model for the Failure Frequency of Underground Gas Pipelines

A model is constructed for the failure frequency of underground pipelines per kilometer year, as a function of pipe and environmental characteristics. The parameters in the model were quantified, with uncertainty, using historical data and structured expert judgment. Fifteen experts from institutes in The Netherlands, the United Kingdom, Italy, France, Germany, Belgium, Denmark, and Canada participated in the study.     

Out of the Closet and into the Classroom: A Survey of Lesbian, Gay, and Bisexual Educators' Classroom Strategies and Experiences in Colleges and Universities

Higher education has made great progress in creating open classroom and organizational environments for diverse populations. However, little research has been published on the experiences of lesbians, gay men, and bisexuals (LGB) in college and university classrooms. The primary purpose of this study is to identify the strategies used by LGB educators to incorporate LGB issues, concerns, and experiences into college and university classrooms. To provide a context for these efforts, the secondary purpose of this study is to examine educators' experiences as LGBs in the classroom and within higher education in general. Toward these ends, the study presents the results of a survey that examined specific classroom strategies used by LGB educators and administrators and their experiences in the classroom and within departments in college and university settings. The survey revealed that LGBs are actively working to enhance classroom environments through a variety of empowerment strategies; they also encounter positive experiences within the classroom and within academic organizations as a whole.