Strong Nash Equilibria in Games with the Lexicographical Improvement Property

We introduce a class of finite strategic games with the property that every deviation of a coalition of players that is profitable to each of its members strictly decreases the lexicographical order of a certain function defined on the set of strategy profiles. We call this property the Lexicographical Improvement Property (LIP) and show that it implies the existence of a generalized strong ordinal potential function. We use this characterization to derive existence, efficiency and fairness properties of strong Nash equilibria. We then study a class of games that generalizes congestion games with bottleneck objectives that we call bottleneck congestion games. We show that these games possess the LIP and thus the above mentioned properties. For bottleneck congestion games in networks, we identify cases in which the potential function associated with the LIP leads to polynomial time algorithms computing a strong Nash equilibrium. Finally, we investigate the LIP for infinite games. We show that the LIP does not imply the existence of a generalized strong ordinal potential, thus, the existence of SNE does not follow. Assuming that the function associated with the LIP is continuous, however, we prove existence of SNE. As a consequence, we prove that bottleneck congestion games with infinite strategy spaces and continuous cost functions possess a strong Nash equilibrium

Rat models of autoimmune uveitis

Experimental autoimmune uveitis ( EAU) in Lewis rats is a well-established model for human uveitis. During the last years we used this model to demonstrate extraocular induction of uveitis by antigenic mimicry of environmental antigens with retinal autoantigen and investigated the migration and intraocular reactivation of autoreactive green fluorescent protein ( GFP)+ T cells. We could also elaborate several differences between EAU induced with S-antigen peptide PDSAg or R14, a peptide derived from interphotoreceptor retinoid-binding protein, suggesting two differently regulated diseases in the same rat strain. R14-mediated EAU in Lewis rats has been shown to relapse, thus we have a new model to test therapeutic approaches in an ongoing immune response instead of just preventing disease. Finally, we show antigenic mimicry of PDSAg and an HLA-B peptide for oral tolerance induction. After the successful first therapeutic trial this approach will now proceed with international multicenter clinical trials. Copyright (c) 2008 S. Karger AG, Basel

STEAM Travel without the Field Trip Migraine

Educator will discover how the Center for Interactive Learning and Collaboration (CILC) can bring STEAM opportunities into the classroom without the hassle of a physical field trip. Participants will enjoy the arts, touch plants and discover organization from around the world while never leaving their seats. K-12

BYOV-Connecting Students Globally with Video Everywhere

We often hear that we should be teaching our students how to interact and collaborate with their peers across different countries, background, cultures and practices. Indeed, the global citizens and the workforce of the future require employees that are adept with team problem solving through multi-cultural experience and collaboration skills. Using high speed bandwidth and cloud-based Interactive Videoconferencing (IVC) students across the globe are practicing these types of skills while covering the national curriculum! K-12

Into the Wild: Factors Mediating the Positive Outcomes of Wilderness Based Therapy

Wildnerness therapy is becoming increasingly popular as a treatment for adolescents. It has been established as an efficacious treatment in previous literature, but the mechanisms as to why have thus far remained a mystery. This research is looking at the connection between wilderness therapy and DBT, another evidence-based treatment. This study will examine 156 adolescents, comparing the efficacy of wilderness therapy to traditional inpatient and intensive outpatient. Pre-treatment assessments of suicidal ideation, emotional regulation, and distress tolerance will be taken. It is expected that there will be main effects for each of the treatments, but that wilderness therapy will be strongest. Additionally, it is expected that emotion regulation and distress tolerance will act as mediators, and their effect on suicidal ideation will be even greater than that of treatment

Barriers to effective programming of rural gifted and talented students

Gifted and talented students in rural areas have barriers that are specific to them. Through a review of literature on gifted and talented students in rural schools this writer has determined five barriers to effective educational programming: (1) Anti-intellectualism as a societal attitude; (2) isolation of rural gifted students; (3) the all-encompassing role of the gifted and talented teacher; (4) inadequate curricular or programming opportunities; and (5) lack of funding. The review and analysis of literature on the rural gifted and talented include the recommendation that much more research needs to be conducted in the area of service to rural gifted and talented students. Specific recommendations are made for addressing and overcoming each of the discovered barriers

Experimental Bell Inequality Violation with an Atom and a Photon

We report the measurement of a Bell inequality violation with a single atom and a single photon prepared in a probabilistic entangled state. This is the first demonstration of such a violation with particles of different species. The entanglement characterization of this hybrid system may also be useful in quantum information applications.Comment: 4 pages, 2 figure