Psychological Distress,Substance Use,and HIV/STI Risk Behaviors Among Youth

Psychological distress has been inconsistently associated with sexual risk behavior in youth, suggesting additional factors, such as substance use, may explain this relationship. The mediating or moderating role of substance use on the relationship between psychological distress and sexual risk behaviors was prospectively examined over the four high school years in a sample of urban youth (N = 850; 80% African American; 50% female). Growth curve modeling was used to estimate changes in sexual risk across adolescence and to test its association to psychological distress symptoms and frequency of substance use. Substance use was associated with psychological distress. Greater psychological distress was associated with increased sexual intercourse frequency, decreased condom use, and increased number of partners. Substance use fully mediated the relationship between psychological distress and intercourse frequency and condom use, and partially mediated the relationship between psychological distress and number of partners. We found no differences in mediation by sex or race/ethnicity and no evidence to support moderation of psychological distress and substance use on sexual risk. Findings suggest that psychological distress is associated with sexual risk because youth with greater psychological distress are also more likely to use substances. Practical implications for adolescent HIV/STI prevention are discussed.     

Conceptualizing the Landscape of Decision Making for Complex Problem Solving

Complex problem resolution often involves the need for a pragmatic integration of knowledge from stakeholders with competing epistemic claims. The decision-making process regarding complex problem resolution is characterized by four basic sources of knowledge: disciplines, societies, organizations, and individuals. From the perspective of the public administration, we conceptualize the structure of the interactions between the disciplines and other sources of knowledge potentially relevant to the resolution of a public problem. To aid this exercise we examine a series of cases that we believe represent relevant aspects of complex problem resolution. We describe these basic interactions as collaborative, agnostic, or adversarial. This is a reorientation to the knowledge at play in the problem at hand. The study of public administration is well suited as a body of knowledge to address complex problems because it has a rich history of cooperation with other disciplines, practitioners, and stakeholders in the public.     

Methods for the analysis of hard dental tissues exposed to high temperatures

The preservation of teeth that have been exposed to a heat source is a key factor in order to keep their value as evidence. This research paper presents some methods under development for the analysis of dental evidence after exposure to high temperatures; it also establishes age related alterations of young and aged teeth which have been exposed to direct heat. A total of thirty permanent healthy teeth (young=15 and old=15) were submitted to direct heat (n=14) and to a controlled raise of temperature (n=16); they were embedded in polymethylmetacrilate. For the macroscopic study, blocks were cut in half, polished and their surfaces were digitalized. Subsequently, blocks were put in slides, worn away and observed through a photomicroscope. The study of the colorimetric pattern was done by Corel Photo Paint 12.0 and Image J. software. All teeth submitted to the gradual raise of temperature presented a degree of structural damage lower than those exposed to direct heat. The internal surface of young teeth exposed to direct heat showed lines of fracture oblique to the long axis of the tooth; in contrast, a reticular pattern was observed on aged teeth. All teeth exposed to direct heat showed some matte-black coloration areas, while those submitted to a gradual increment of temperature showed a greyish colour in the enamel and a chalky-white in the cementum. By using both thermal treatments in young teeth, the amelodentinal junction was lost, thus preserving the integrity of each tissue. In aged teeth, the separation of this junction was produced because of the breakdown of the dentine. Microscopically, in teeth exposed to direct heat, it was neither possible to differentiate the dentin from the cementum, nor to distinguish the incremental lines of the latter; while in those submitted to a controlled increment of temperature, the corresponding morphology in the tissues was observed. A significant statistical difference was obtained for black colour among young and aged teeth exposed to direct heat, as well as among the means of all colours obtained from the teeth exposed to both treatments. The structural changes observed allow locating a tooth in the studied age groups. Our results show the viability of the applied method for the processing of samples, allowing their preservation as evidence during an indefinite time.     

Grounding transnational business governance: A political-strategic perspective on government responses in the Global South

Recent scholarship on transnational business governance has begun to examine public-private interactions and the active role of governments. We make two key contributions that integrate and expand this literature. First, in juxtaposition to functionalist accounts, we foreground the fundamentally political and often contentious character of these interactions. As private transnational governance schemes and standards “hit the ground,” private-public interactions, we argue, are embedded in national political arenas and tied to domestic distributional struggles among competing regulatory coalitions. Building upon multiple empirical streams of research, we develop a political-strategic framework that maps the diversity of Southern government responses (substitute, adopt, repurpose, replace, or reject) to transnational private governance. Our framework shows that government responses are a function of both strategic fit with domestic industrial capabilities and structures, and strength of developmental state capacity. Second, our proposed framework adopts the vantage point of Global South governments and industries, particularly how development challenges and strategic options within global value chains affect their understanding of, and responses to, transnational schemes and standards. This is an important corrective to a Northern bias in the private governance literature.     

Government Selection and Executive Powers: Constitutional Design in Parliamentary Democracies

Provisions for a parliamentary investiture vote have become increasingly common in parliamentary democracies. This article shows that investiture provisions were largely introduced when new constitutions were written or old ones fundamentally redesigned. It also shows that the constitutions that endowed executives with strong legislative agenda powers also endowed parliaments with strong mechanisms to select the executive. It is argued that constitution makers’ decisions can be seen in principal–agent terms: strong investiture rules constitute an ex ante mechanism of parliamentary control – that is, a mechanism to minimise adverse selection and reduce the risk of agency loss by parliament. The findings have two broad implications: from a constitutional point of view, parliamentary systems do not rely exclusively on ex post control mechanisms such as the no confidence vote to minimise agency loss; parliamentarism, at least today and as much as presidentialism, is the product of conscious constitutional design and not evolutionary adaptation.