Bayesian phylogenetic inference from animal mitochondrial genome arrangements

Summary. The determination of evolutionary relationships is a fundamental problem in evolutionary biology. Genome arrangement data are potentially more informative than deoxyribonucleic acid sequence data for inferring evolutionary relationships between distantly related taxa. We describe a Bayesian framework for phylogenetic inference from mitochondrial genome arrangement data using Markov chain Monte Carlo methods. We apply the method to assess evolutionary relationships between eight animal phyla.     

The Production of Several Items in a Single Facility with Linearly Changing Demand Rates

In this paper we extend the ELSP model to allow for linearly changing demand rates over a fixed planning horizon. This extension of the ELSP research provides a model that can be used in coordinating the production and marketing planning activities in a firm. The model allows the user to evaluate the impact of changes in product demand on production costs and customer service. We solve the model using a standard nonlinear programming package (MINOS) and show through examples based on actual production data how the model can be used to support coordinated production and marketing planning.     

Social Contagion of Risk Perceptions in Environmental Management Networks

An important requisite for improving risk communication practice related to contentious environmental issues is having a better theoretical understanding of how risk perceptions function in real‐world social systems. Our study applied Scherer and Cho's social network contagion theory of risk perception (SNCTRP) to cormorant management (a contentious environmental management issue) in the Great Lakes Basin to: (1) assess contagion effects on cormorant‐related risk perceptions and individual factors believed to influence those perceptions and (2) explore the extent of social contagion in a full network (consisting of interactions between and among experts and laypeople) and three “isolated” models separating different types of interactions from the full network (i.e., expert‐to‐expert, layperson‐to‐layperson, and expert‐to‐layperson). We conducted interviews and administered questionnaires with experts (e.g., natural resource professionals) and laypeople (e.g., recreational and commercial anglers, business owners, bird enthusiasts) engaged in cormorant management in northern Lake Huron (n = 115). Our findings generally support the SNCTRP; however, the scope and scale of social contagion varied considerably based on the variables (e.g., individual risk perception factors), actors (i.e., experts or laypeople), and interactions of interest. Contagion effects were identified more frequently, and were stronger, in the models containing interactions between experts and laypeople than in those models containing only interactions among experts or laypeople.     

Homelessness, Mental Illness and Citizenship

Assertive mental health outreach to homeless persons, which operates under the premise that mental illness must be understood and treated within the individual's social and economic environment, points towards the goals of community membership and 'citizenship'—a connection to the rights, responsibilities, roles, and resources that society offers through public and social institutions and informal 'associational life'—for homeless persons. We argue that the concept of citizenship is a useful framework for approaching these goals. We review the principles of assertive mental health outreach and relevant aspects of contemporary citizenship theory; present a case example of outreach leading to a 'citizenship project'; and discuss the potential benefits and pitfalls of a citizenship framework, including strategies and recommendations for program administrators, researchers and policy makers.     

The Subjectivity of Habitus

Departing from Bourdieu's collective habitus, this essay develops a theory of the subjectivity of habitus, meaning the social‐psychological processes comprising the agent and fueling deliberation. By incorporating George Ainslie's theory of the will and deliberation as the intertemporal bargaining of a population of interests, I theorize the “saturated agent” composed of an economy of interests, analogous to Bourdieu's “economy of practices” invested and saturated with cultural capital. Here culturally saturated interests negotiate strategically within the agent, with the ending balance constituting the habitus. Additionally, reflexivity becomes amenable to habitus as “desaturation” or suspending the commitment to a set of culturally saturated interests as a result of a crisis, followed by “resaturation”, the restructuring of the economy of interests.     

Length minimization for Poisson confidence procedures

We study Poisson confidence procedures that potentially lead to short confidence intervals, investigating the class of all minimal cardinality procedures. We consider how length minimization should be properly defined, and show that Casella and Robert's (1989) criterion for comparing Poisson confidence procedures leads to a contradiction. We provide an alternative criterion for comparing length performance, identify the unique length optimal minimal cardinality procedure by this criterion, and propose a modification that eliminates an important drawback it possesses. We focus on procedures whose coverage never falls below the nominal level and discuss the case in which the nominal level represents mean coverage.     

Personality, drug preference, drug use, and drug availability

This study examined the relationship between drug preference, drug use, drug availability, and personality among individuals (n = 100) in treatment for substance abuse in an effort to replicate the results of an earlier study (Feldman, Kumar, Angelini, Pekala, & Porter, 2007) designed to test prediction derived from Eysenck's (1957, 1967) theories. Drug preference was measured by the method of paired-comparison and personality was measured with the Zuckerman-Kuhlman Personality Questionnaire-50 CC. Contrary to expectations, high compared with low scorers on Sociability and Impulsive-Sensation Seeking preferred depressants. Surprisingly, low compared with high scorers on neuroticism did not differ in preference for alcohol. As in the previous study, drug preference, use, and availability were highly correlated, although ease of availability was slightly more predictive of drug use than drug preference. Clinical and theoretical implications are discussed.     

Myth and the construction of foreign ethnic identity in early and medieval China

Early Chinese histories sometimes record two extremely different myths about the origins of a foreign people: a native version and a Sinicised version. This is the case with myths about the Xiongnu, Xianbei and Korean peoples. Native and Sinicised origin myths had different functions. Sometimes, Chinese wanted to create psychological distance between themselves and potentially dangerous foreign peoples. Recounting a native myth bolstered Chinese ethnic pride by making other peoples seem strange and exotic, in contrast to normative Chinese culture. In other instances, Chinese told Sinicised myths to assimilate foreign peoples into Chinese culture. These myths legitimised Chinese expansion and conquest, but could also be used against China by foreign invaders. The coexistence of native and Sinicised versions of ethnic origin myths in early historical records shows the mutability of ethnicity in early China, and the manipulation of ethnic identity for political and military ends.