Denise Michele Gray in a Senior Piano Recital

This is the program for the senior piano recital of Denise Michele Gray. The recital was held on May 5, 1968, in Mitchell Hall Auditorium

Simulating Hard Rigid Bodies

Several physical systems in condensed matter have been modeled approximating their constituent particles as hard objects. The hard spheres model has been indeed one of the cornerstones of the computational and theoretical description in condensed matter. The next level of description is to consider particles as rigid objects of generic shape, which would enrich the possible phenomenology enormously. This kind of modeling will prove to be interesting in all those situations in which steric effects play a relevant role. These include biology, soft matter, granular materials and molecular systems. With a view to developing a general recipe for event-driven Molecular Dynamics simulations of hard rigid bodies, two algorithms for calculating the distance between two convex hard rigid bodies and the contact time of two colliding hard rigid bodies solving a non-linear set of equations will be described. Building on these two methods, an event-driven molecular dynamics algorithm for simulating systems of convex hard rigid bodies will be developed and illustrated in details. In order to optimize the collision detection between very elongated hard rigid bodies, a novel nearest-neighbor list method based on an oriented bounding box will be introduced and fully explained. Efficiency and performance of the new algorithm proposed will be extensively tested for uniaxial hard ellipsoids and superquadrics. Finally applications in various scientific fields will be reported and discussed.Comment: 36 pages, 17 figure

Factor structure and construct validity of the Anxiety Sensitivity Index among island Puerto Ricans

The factor structure and convergent and discriminant validity of the Anxiety Sensitivity Index (ASI) were examined among a sample of 275 island Puerto Ricans. Results from a confirmatory factor analysis (CFA) comparing our data to factor solutions commonly reported as representative of European American and Spanish populations indicated a poor fit. A subsequent exploratory factor analysis (EFA) indicated that a two-factor solution (Factor 1, Anxiety Sensitivity; Factor 2, Emotional Concerns) provided the best fit. Correlations between the ASI and anxiety measures were moderately high providing evidence of convergent validity, while correlations between the ASI and BDI were significantly lower providing evidence of discriminant validity. Scores on all measures were positively correlated with acculturation, suggesting that those who ascribe to more traditional Hispanic culture report elevated anxiety

Ethnic diversity, social capital and the potential for co-managemet - a case study of Hawaii's longline fishery.pdf

Social networks and social capital can facilitate or constrain collaborative arrangements which can enhance resource governance and adaptability in complex social-ecological systems such as fisheries. Yet, the impact of ethnic diversity among resource users on social network capital in the context of resource governance has not been previously examined. To explore this effect, a social network analysis of the entire population of resource users in Hawaii’s longline fishery was performed, which is currently characterized by a division along ethnic lines and competition over resource use. Results show that ethnicity significantly influences social network structure and is responsible for a homophily effect, with higher levels of bonding and bridging ties found within ethnic groups. In contrast to previous research on social capital, the greatest evidence of linking social capital ties was found in a minority ethnic group rather than the dominant ethnic group. However, results suggest that ethnic fragmentation may be responsible for the marginalization of another minority group, which reported a significantly low level of linking ties to industry leaders, government or management officials, and the scientific community. This study provides the first empirical evidence of the effect of ethnic diversity on social network capital in the fisheries literature, and has implications for the success of collaborative management

Opening the black box of scholarly communication funding: a public data infrastructure for financial flows in academic publishing

‘Public access to publicly funded research’ has been one of the rallying calls of the global open access movement. Governments and public institutions around the world have mandated that publications supported by public funding sources should be publicly accessible. Publishers are experimenting with new models to widen access. Yet financial flows underpinning scholarly publishing remain complex and opaque. In this article we present work to trace and reassemble a picture of financial flows around the publication of journals in the UK in the midst of a national shift towards open access. We contend that the current lack of financial transparency around scholarly communication is an obstacle to evidence-based policy-making – leaving researchers, decision-makers and institutions in the dark about the ­systemic implications of new financial models. We conclude that ­obtaining a more joined up picture of financial flows is vital as a means for researchers, ­institutions and others to understand and shape changes to the ­sociotechnical systems that underpin scholarly communication