Heterogeneity, Communication, Coordination and Voluntary Provision of a Public Good

The results of twenty-four laboratory sessions are evaluated with respect to the role of alternative definitions of equity when communication is introduced into an environment in which voluntary contributions determine the level of public good provision to small groups of individuals. Individuals experience both non-communication and communication treatments. Additional treatments include the extent to which subjects have information about others’ payoffs from (preferences for) the consumption of public goods and about others’ incomes and payoff functions (preferences). With communication, participants in incomplete information environments are less able to coordinate their contributions while those in complete information environments succeed more often. Under complex heterogeneity payoff distributions widen with the introduction of communication. The data do not support the emergence of a particular pattern of coordination across all treatments.

An Examination of the Dynamic Stalling of Two Wing Planforms. G.U. Aero Report 9526

No abstract available

Heterogeneity and the Voluntary Provision of Public Goods

We investigate the effects of heterogeneity, incomplete information and communication on aggregate contributions to a public good using the voluntary contribution mechanism in a nonlinear laboratory environment. One-dimensional heterogeneity (heterogeneity in income or preferences) and two-dimensional heterogeneity (heterogeneity in income and preferences) both increase voluntary contributions. The effect is greatest when information is incomplete in the sense that subjects do not know each other’s payoffs. Incomplete information also reduces contributions in the homogeneous case. Communication reverses the relative importance of oneand two-dimensional heterogeneity in promoting cooperation.

Key dating features for timber-framed dwellings in Surrey

This article is made available through the Brunel Open Access Publishing Fund. Copyright @ The Vernacular Architecture Group 2013. MORE OpenChoice articles are open access and distributed under the terms of the Creative Commons Attribution License 3.0.The main component of the Surrey Dendrochronology Project is the accurate dating of 177 ‘dwellings’, nearly all by tree-ring analysis. The dates are used to establish date ranges for 52 ‘key features’, which cover many aspects of timber-framing from building type to details of carpentry. It is shown that changes of method and fashion were in many cases surprisingly rapid, almost abrupt in historical terms. Previous dating criteria for timber-framed dwellings in the county have been refined and new criteria introduced. Clusters of change from the 1440s and the 1540s are shown and some possible historical links suggested.The Heritage Lottery Fund, the Domestic Buildings Research Group (Surrey), the Surrey Archaeological Society and the historical societies of Charlwood, Farnham and Nutfield

Critical States in Disordered Superconducting Films

When subject to a pair-breaking perturbation, the pairing susceptibility of a disordered superconductor exhibits substantial long-ranged mesoscopic fluctuations. Focusing on a thin film subject to a parallel magnetic field, it is proposed that the quantum phase transition to the bulk superconducting condensate may be preempted by the formation of a glass-like phase with multi-fractal correlations of a complex order parameter. Although not universal, we argue that such behavior may be a common feature of quantum critical phenomena in disordered environments.Comment: 7 pages, 1 eps figur

The Effects of Various Recovery Techniques on Collegiate Pitching Performance

Snyder, B., Davis, S., Moir, G., Miltenberger, M., East Stroudsburg University, East Stroudsburg, PA Purpose: This study was designed to compare pitching performance (velocity, accuracy), symptomology and functional movement across three recovery techniques (active recovery (pedaling on a stationary bike at 40% Max Age Predicted Heart Rate), passive recovery (sitting down with a jacket around the pitchers arm), and Electro muscular stimulation (sitting down with stim placed on the pitchers arm at the anterior and posterior deltoid) in NCAA Division II collegiate pitchers. Methods: Eight male Division II collegiate baseball athletes (Age: 20.1 ± 1.7 years, Mass: 84.8 ± 10.9 kg, average years of experience: 1.8 ± 1.3, % fat mass: 11.1 ± 4.9, Starter pitcher/relief pitcher: 4/4) volunteered to participate in this study. Each pitcher threw 15 pitchers per inning for a total of 45 pitches per session (3 Fastball, 1 Curveball, 1 Changeup-3 times per inning). After each inning pitched a recovery was performed for 6 minutes to simulate the time in between innings. Prior to warm up, after warm up and after each of the three innings was performed each pitcher was tested for HLa, delta pain scale, internal rotation, external rotation, overall RPE and local RPE. Results: The electro muscular stimulation showed significantly greater amount of strikes thrown at p \u3c 0.05. Overall the velocities (mph) were similar over all three recovery methods and all three innings thrown. Conclusion: Findings from this study suggest the importance of possibly implementing the use of electro muscular stimulation during pitchers recoveries times between innings. Since the velocity was not affected, different recovery methods may be useful to aid the accuracy of different individuals in game situations

Learning Effect of Anchoring Bias in Combination with Action-Perception Coupling in Novice Golf Putting

Please download pdf version here