Elevated phosphorus: dynamics during four years of green roof development

Green roofs are emerging engineered ecosystems that provide multiple benefits, but many are constructed with nutrient-rich substrate and have been found to leach out high levels of phosphorus (P) in runoff. It is unclear, however, how long green roofs act as sources of P or what mechanisms are responsible for these net losses. We measured P concentrations in runoff water over 4 years from a 1–5 year old extensive green roof in Cincinnati, OH, USA, produced a model to predict runoff P levels into the future, and validated predictions using runoff from 2 nearby extensive green roofs. P concentrations in runoff from the focal green roof were on par with heavily fertilized agroecosystems and displayed strong seasonal dynamics and a rapid decline over the 4-year study. Runoff measurements and changes in substrate P content over a 2-year period were used to estimate a mass balance for green roof P. P loss from the substrate was substantial (4.55 ± 2.3 g P/m²/yr), but only a small portion of the loss was attributable to leaching of P in runoff (0.19–0.65 g P/m²/yr). Missing P may be attributed to a combination of plant uptake and altered P form and binding strength, but further research is needed to precisely identify the mechanisms of P depletion. Our results also suggest that these and similar extensive green roofs are likely to act as environmentally significant sources of P for 10 or more years following roof installation, highlighting the need for reductions in initial substrate P content.     

The United States Economic Crisis: Young Adults’ Reports of Economic Pressures, Financial and Religious Coping and Psychological Well-Being

Using a sample of 222 young adults attending college, the present study examined the relative contribution of young adults’ perceived economic pressures, financial coping and religious meaning-making coping strategies in accounting for variation in their reports of psychological well-being within the context of the United States economic crisis. Results suggest a direct relationship between perceived economic pressure and psychological well-being such that young adults who reported having to make more economic adjustments as a result of economic crisis also reported higher levels of depressed mood and anxiety. Young men and women who reported having to make fewer economic adjustments and being able to meet their material needs reported higher levels of life satisfaction. Regardless of young adults’ self-reported level of economic pressures, the use of education and communication financial coping strategies was related to lower levels of self-reported anxiety and depressed mood and greater life satisfaction. Viewing the financial crisis as a punishment from God was generally associated with young adults’ reports of greater depressed mood and less life satisfaction. Implication of findings for research and practice are discussed.     

Development of a Questionnaire to Assess University Students’ Intentions to Use Behavioral Alcohol-Reduction Strategies

Abstract

Objective: To evaluate the psychometric properties of a new self-report questionnaire designed to assess college students’ intentions to employ 31 specific alcohol-reduction strategies. Method: Students attending a large public university were recruited to complete alcohol-reduction, drinking history, and personality questionnaires online. Results: Based on item–total correlations and principal components analysis, the authors eliminated 3 items and calculated average intention ratings across the remaining 28 items. The resulting scale had appropriate unidimensionality and excellent internal consistency. Correlations of intention questionnaire scores with measures of drinking history, alcohol outcome expectancies, sensation seeking, and impression management provided some support for criterion and discriminant validity of the questionnaire. Conclusion: This questionnaire could be employed as an outcome measure to evaluate prevention programs and as a clinical tool to identify clients who have little intention to employ drinking reduction strategies in heavy drinking situations.     

Racial inquiries: law and the political visibility of racism in the Air India inquiry

ABSTRACT

Critical race scholarship has effectively documented how the legal institutions of liberal democratic states figure as both mechanisms of systemic racism and avenues of redress against these forms of power. This article offers new insights into the racial effects of these legal institutions by examining the epistemic dynamics of a Canadian public inquiry that was tasked with investigating why state institutions failed to prevent and successfully prosecute the bombings of two Air India flights, which investigators attributed to Sikh nationalist groups operating in Canada. Through a discourse analysis of documents generated during the inquiry, I track how its complex epistemic dynamics precluded recognition of the racial effects of Canadian state institutions. Approaching the inquiry as an instrument of juridical knowledge production and mechanism of political accountability, this article tracks the contingent processes through which liberal epistemologies of race are validated by state actors to extend race’s systemic conditions of existence.     

Racial accountabilities: the legal legibility of racial state violence in the Special State’s Attorney Report on Police Torture in Chicago

Public inquiries command significant political capital for liberal democratic states that premise their authority on being accountable to a generalized public sphere. By attending to the particular relations of visibility that are generated by these investigative state institutions, this article reveals the differentiated forms of legal and political accountability that structure the proceedings and case history of the 2006 Special State’s Attorney Report, which investigated the torture of African American suspects by Chicago police officers under the supervision of former Commander Jon Burge. More specifically, this article documents the racial relations of power that shape how state actors and institutions are made to answer for their conduct, explicating the ‘racial accountabilities’ that mediated this public inquiry as well as the practices of state violence it was tasked with investigating. On the one hand, these forms of accountability focused blame on the individualized actions of particular state actors, abstracting their conduct from the broader systemic conditions that have rendered African American populations vulnerable to racial state violence. On the other hand, this article explains how the forensic gaze deployed throughout the legal investigations into torture reconstituted its victims as objects of law with differential access to its forms of protection and technologies of redress. By detailing the force and dimensions of these racial accountabilities, this article illustrates how public inquiries and other institutions of law can reproduce and extend racial fields of violence while also regenerating public confidence in the efficacy and equality of the state.     

Health attitudes and suicidal ideation among university students

ABSTRACT

Objective: The purpose of this study was to examine whether positive health attitudes are associated with suicidal ideation among university students after accounting for other health risk factors linked to suicidal ideation. Participants: Participants were 690 undergraduates from a large midwestern university during fall semester 2011. Methods: Participants reported demographics and health characteristics. Regression models compared individuals who reported suicidal ideation and those who did not. Results: In unadjusted models, suicidal ideation was significantly negatively associated with positive health attitudes, and positively associated with depression, drug use problems, sleep problems, and being overweight. In adjusted models, more positive health attitudes continued to be significantly negatively associated with suicidal ideation. Conclusions: This study suggests a link between positive health attitudes and lower probability of suicidal ideation. Additional research is needed to assess enhancing general health attitudes as a suicide prevention effort.     

Can't hold us back! Hip-hop and the racial motility of aboriginal bodies in urban spaces

Urban centers across Canada are partitioned by racial geographies that circumvent and circumscribe the movements of aboriginal bodies. This article examines how aboriginal youth experience and engage these racisms that organize Canadian social spaces. Drawing on ethnographic fieldwork undertaken at a drop-in recreational centre in the inner city of Edmonton, Alberta, it documents the different ways in which indigenous youth employ hip-hop as a means to contest their subjection to these immobilizing racisms. First, it shows how these youth employ hip-hop as a technology of self-transformation through which they recreate their selves as meaningful, efficacious political actors capable of disrupting their relegation to criminogenic places. Second, it documents how the practice of a distinctly indigenous hip-hop allows these youth to innovate an aesthetic space disruptive of the historicist racisms that otherwise subject aboriginality to anachronistic spaces. Finally, this article shows that, by performing a hybridized, distinctly indigenous breakdance, these practitioners of hip-hop dramatize the physical and cultural motility of aboriginal bodies.     

Characteristics of university students who mix alcohol and energy drinks

Objective: Research has identified correlates (eg, drug use, risky sex, smoking) of using alcohol mixed with energy drinks (AMEDs). Few studies have investigated common mental health-related concerns (eg, depression, sleep). Participants: Alcohol-using college students (n = 380 never used AMEDs, n = 180 used AMEDs) were recruited in the study during the fall 2011 semester. Methods: The study examined demographics, substance use, depressive symptoms, and sleep problems in association with AMED use. Results: Multivariable logistic regression indicated that alcohol use severity (AOR = 1.24; 95% CI = 1.14+1.34), drug use severity (AOR = 1.20; 95% CI = 1.04–1.39), depressive symptoms (AOR = 1.06; 95% CI = 1.01–1.12), and smoking (AOR = 2.12; 95% CI = 1.22–3.68) were independently associated with AMED use; sleep problems were non-significant. Conclusions: Administrators may consider policies regarding energy drink availability on campus, and campus health personnel may increase screening and education surrounding AMED use to reduce risks among students.