Developing Adaptive Au tion Me hanisms

Comparative Analysis on Two Selling Me hanisms : Multi - unitCombinatorial Au tion and First - Come - First - Serve

Adaptive Finite Element Simulation of Currents at Microelectrodes to a Guaranteed Accuracy. Application to Channel Microband Electrodes

Adaptive Finite Element Simulation of Currents at Mi roele trodes to a Guaranteed A ura y. Appli ation to Channel Mi roband Ele trodes. Kathryn Harriman David Gavaghan Paul Houston David Kay Endre S uli We extend our earlier work (see K. Harriman et al., Te hni al Report NA99/19) on adaptive nite element methods for dis ele trodes to the ase of rea tion me hanisms to the in reasingly popular h...

lambda-RBAC: Programming with Role-Based Access Control

b Bell Labs e-mail address: aje rey bell-labs. om Abstra t. We study me hanisms that permit program omponents to express role onstraints on lients, fo using on programmati se urity me hanisms, whi h permit a ess ontrols to be expressed, in situ, as part of the ode realizing basi fun tionality. In this setting, two questions immediately arise. (1) The user of a omponent fa es the issue of safety...

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Abstra t: Au tion me hanism design has traditionally been a largely analyti pro ess, relying on assumptions su h as fully rational bidders. In pra ti e, however, bidders behave unpredi tably, making them dif ult to model and ompli ating the design pro ess. To address this hallenge, we present an adaptive au tion me hanism: one that learns to adjust its parameters in response to past empiri al b...

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Cooperatively shared wide-area omputing platforms, su h as PlanetLab, provide a large pool of geographi ally distributed resour es whi h an be utilized for building highly available and s alable servi es. In this thesis, we present me hanisms and models for building autonomi ally s alable and resilient servi es on su h platforms. In su h platforms resour es at a node are allo ated to ompeting u...