Joint Seminar, Lefschetz Center for Dynamical Systems and The Center for Fluid Mechanics
Abstract: We consider the statistics of pairs of subsurface, free-drifting floats in the North Atlantic. Previous observations from the atmosphere and the ocean surface are discussed, as is the theoretical framework (turbulence) in which those observations have been interpreted. The present results are likewise compared to predictions from 2-D turbulence theory, and some agreement is found; however, alternate dynamical paradigms may be consistent as well.
Brown University Center for Statistical Sciences Seminar
*Reception following Seminar at 167 Angell Street, 2nd floor Conference Room *Sponsored by the Mollie B. Mandeville Lectureship and The C.V. Starr Foundation Lectureships Fund |
Abstract: Many scientific investigations generate both longitudinal measurement data, with repeated measurements of a response variable at a number of time points, and event-time data, such as time to death or dropout from a study. In this talk we describe an approach under which the two components are linked through their shared dependence upon an underlying latent process, representing in some way the "health" of the individual. The ideas are illustrated using from a trial into the treatment of schizophrenia, in which a substantial proportion of patients failed to complete the measurement schedule.
Stochastic Systems Seminar
Abstract: Ergodic type Bellman equations of risk-sensitive control is considered from an analytical viewpoint. We shall prove the existence of solutions for ergodic type equations by relating them to eigenvalue problems of some Schr\"odinger operators.
Then, by taking singular limits, we shall obtain a particular viscosity solution of the limit equation.
Brown Analysis Seminar
Special Applied Mathematics Colloquium
PLEASE NOTE CHANGE OF DAY AND ROOM FOR THIS WEEK ONLY |
Scientific Computing Seminar
Abstract: Microsystems, encompassing MEMS, Microfluidics and Bio-MEMS, is an enabling technology that merges advances in information processing, storage and display with the advances in sensors and actuators to bring about a revolution in the way we both perceive and control the environment. Innovative design of microsystems is currently hampered by the lack of accurate and efficient computer-aided design (CAD) tools. After addressing several challenges that are currently facing CAD for microsystems, this talk will focus on computational methods such as meshless methods, molecular approaches, multiscale techniques, and reduced-order models for the development of efficient design tools for rapid prototyping of MEMS, microfluidics and Bio-MEMS. The talk will focus on several applications: Design of electrostatics based mirosensors and microactuators, gas transport at micro scales, electrokinetics based design of microfluidics, hydrogel materials for novel sensor and actuator applications and the use of ionic channel principles to develop ultra-small sensors and separation devices.
Special Brown/GANG/UMass Geometry Day
Special Brown/GANG/UMass Geometry Day
Special Brown/GANG/UMass Geometry Day
<--- 2000 Index