Beyond the Border and Into the Heartland: Spatial Patterning of U.S. Immigration Detention

The expansion of U.S. immigration enforcement from the borders into the interior of the country and the fivefold increase in immigration detentions and deportations since 1995 raise important questions about how the enforcement of immigration law is spatially patterned across American communities. Focusing on the practice of immigration detention, the present study analyzes the records of all 717,160 noncitizens detained by Immigration and Customs Enforcement (ICE) in 2008 and 2009—a period when interior enforcement was at its peak—to estimate states’ detention rates and examine geographic variation in detention outcomes, net of individual characteristics. Findings reveal substantial state heterogeneity in immigration detention rates, which range from approximately 350 detentions per 100,000 noncitizens in Connecticut to more than 6,700 detentions per 100,000 noncitizens in Wyoming. After detainment, individuals’ detention outcomes are geographically stratified, especially for detainees eligible for pretrial release. These disparities indicate the important role that geography plays in shaping individuals’ chances of experiencing immigration detention and deportation.     

Saving water to save the environment: contrasting the effectiveness of environmental and monetary appeals in a residential water saving intervention

To convince people to reduce their energy consumption, two types of persuasive appeals often are used by environmental organizations: Monetary appeals (i.e., ‘conserving energy will save you money’) and environmental appeals (i.e., ‘conserving energy will protect the environment’). In this field study we aimed to compare the effects of monetary and environmental appeals on showering habits. During two weeks we measured showering behavior in one hundred households. As compared to monetary appeals, environmental appeals were more effective in decreasing participants’ shower frequency. Interestingly, the monetary appeal was judged as somewhat more motivating to save water than the environmental appeal. We discuss theoretical and practical implications of these findings.     

Organising Work and Home in Same‐Sex Parented Families: Findings From the Work Love Play Study

In this article we present findings from the Work, Love and Play (WLP) study: a survey completed by 445 same‐sex attracted parents across Australia and New Zealand. Comparisons of household division of labour are made between a sub‐sample of WLP participants, who were currently cohabiting with a same‐sex partner (n = 317), and 958 cohabiting opposite‐sex parents surveyed as part of a major Australian study, Negotiating the Life Course. This comparison showed that same‐sex couples divided household labour significantly more equally than heterosexual parents, and lesbian couples also shared parenting tasks more equally. Qualitative findings from the WLP study indicate that, for many same‐sex couples, major decisions around who gives up paid work and how many hours parents choose to work, as well as decisions around work/family balance, are negotiated on the basis of couple's preferences and circumstance rather than an assumption that one parent will be the primary child carer. It is speculated that this finding highlights an important point of difference between same‐sex couples and heterosexual couples where the division of household labour is often based on the assumption that the mother will almost always be the primary child carer and homemaker. The research is a collaborative partnership between La Trobe University, Deakin University, The University of Melbourne, and Relationships Australia Victoria.     

The Job Demand-Control (-Support) Model and psychological well-being: A review of 20 years of empirical research

The Job Demand-Control (JDC) model (Karasek, 1979) and the Job Demand-Control-Support (JDCS) model (Johnson, and Hall, 1988) have dominated research on occupational stress in the last 20 years. This detailed narrative review focuses on the JDC(S) model in relation to psychological well-being. It covers research from 63 samples, published in the period 1979-1997. In the review a distinction is drawn between two different hypotheses prevailing in research on the models. According to the strain hypothesis of the JDC model, employees working in a high-strain job (high demands-low control) experience the lowest well-being. The buffer hypothesis states that control can moderate the negative effects of high demands on well-being. Translating these hypotheses to the expanded JDCS model, the iso-strain hypothesis predicts the most negative outcomes among workers in an iso-strain job (high demands-low control-low social support/isolation), whereas the buffer hypothesis states that social support can moderate the negative impact of high strain on well-being. Although the literature gives considerable support for the strain and iso-strain hypotheses, support for the moderating influence of job control and social support is less consistent. The conceptualization of demands and control is a key factor in discriminating supportive from nonsupportive studies. Only aspects of job control that correspond to the specific demands of a given job moderate the impact of high demands on well-being. Furthermore, certain subpopulations appear to be more vulnerable to high (iso)strain, whereas others benefit more from high control. On the basis of the results of this review, suggestions for future research and theoretical development are formulated.     

Watershed Pollution and Preservation: The Awareness–Appraisal Model of Environmentally Positive Intentions and Behaviors

A two-factor awareness-appraisal model suggests that individuals' reactions to threatening circumstances are shaped by their awareness of the threat and their appraisal of the degree of threat the circumstances pose to them. This approach, applied to watershed conservation, predicts that individuals will be willing to clean up the rivers and streams of their watershed if they are familiar with local water features (rivers, streams, ponds, lakes) and if they consider these features of the watershed to be degraded. We tested the model by measuring watershed knowledge, appraisal of watershed quality, value assigned to protecting the watershed, and behavioral intentions regarding watershed preservation in a survey of 1,128 residents of two urban watersheds. The results supported the awareness-appraisal model: Those residents who were aware of their watershed and considered it polluted expressed the strongest pro-preservation behavioral intentions. These relationships were held in both watersheds, but were stronger for those who resided in the more degraded watershed .     

Classification of orthogonal arrays by integer programming

The problem of classifying all isomorphism classes of OA(N,k,s,t)$\mathrm{OA}(N,k,s,t)$'s is shown to be equivalent to finding all isomorphism classes of non-negative integer solutions to a system of linear equations under the symmetry group of the system of equations. A branch-and-cut algorithm developed by Margot [2002. Pruning by isomorphism in branch-and-cut. Math. Programming Ser. A 94, 71–90; 2003a. Exploiting orbits in symmetric ILP. Math. Programming Ser. B 98, 3–21; 2003b. Small covering designs by branch-and-cut. Math. Programming Ser. B 94, 207–220; 2007. Symmetric ILP: coloring and small integers. Discrete Optim., 4, 40–62] for solving integer programming problems with large symmetry groups is used to find all non-isomorphic OA(24,7,2,2)$\mathrm{OA}(24,7,2,2)$'s, OA(24,k,2,3)$\mathrm{OA}(24,k,2,3)$'s for 6?k?11$6?k?11$, OA(32,k,2,3)$\mathrm{OA}(32,k,2,3)$'s for 6?k?11$6?k?11$, OA(40,k,2,3)$\mathrm{OA}(40,k,2,3)$'s for 6?k?10$6?k?10$, OA(48,k,2,3)$\mathrm{OA}(48,k,2,3)$'s for 6?k?8$6?k?8$, OA(56,k,2,3)$\mathrm{OA}(56,k,2,3)$'s, OA(80,k,2,4)$\mathrm{OA}(80,k,2,4)$'s, OA(112,k,2,4)$\mathrm{OA}(112,k,2,4)$'s, for k=6,7$k=6,7$, OA(64,k,2,4)$\mathrm{OA}(64,k,2,4)$'s, OA(96,k,2,4)$\mathrm{OA}(96,k,2,4)$'s for k=7,8$k=7,8$, and OA(144,k,2,4)$\mathrm{OA}(144,k,2,4)$'s for k=8,9$k=8,9$. Further applications to classifying covering arrays with the minimum number of runs and packing arrays with the maximum number of runs are presented.