We present paper six of the NIRSPEC Brown Dwarf Spectroscopic Survey, an analysis of multi-epoch, highresolution (R ∼ 20,000) spectra of 25 field dwarf systems (3 late-type M dwarfs, 16 L dwarfs, and 6 T dwarfs) taken with the NIRSPEC infrared spectrograph at the W. M. Keck Observatory. With a radial velocity (RV) precision of ∼2 km s, we are sensitive to brown dwarf companions in orbits with p...

Submitted for the DPP07 Meeting of The American Physical Society Velocity Field Analysis for Edge Turbulence Imaging B.T. BROWN, T. MUNSAT, Center for Integrated Plasma Studies, University of Colorado, C. HOLLAND, G. TYNAN, Dept. Mechanical and Aerospace Engineering, UCSD — Techniques for extracting time-resolved 2-D velocity maps have been developed for turbulence imaging diagnostics. A hybrid...

Many stormwater management practices depend on sedimentation as their primary removal mechanism, but the settling velocity distribution of particles in runoff from a specific watershed is rarely known. A simple and effective method to characterize settling velocity distribution is needed to improve the design of stormwater management practices. Elutriation devices have been used to characterize...

The Modular Distributed Manipulator System (MDMS) is a novel materials handling system which is a xed array of actuated wheels capable of inducing arbitrary motions in the plane. This work develops control laws for transporting and manipulating macroscopic-scale objects (parcels) that rest on the array. The dynamics of parcel transport and manipulation lead to the necessary understanding of suc...

The time dependence of the survival probability S(t) is determined for diffusing particles in two dimensions which are also driven by a random unidirectional zero-mean velocity field vx(y). For a semi-infinite system with unbounded y and x.0, and with particle absorption at x50, a qualitative argument is presented which indicates that S(t);t. This prediction is supported by numerical simulation...