Processor manufacturers build increasingly specialized processors to mitigate the effects of the power wall to deliver improved performance. Currently, database engines are manually optimized for each processor: A costly and error prone process. In this paper, we propose concepts to enable the database engine to perform per-processor optimization automatically. Our core idea is to create varian...

This text presents one of the first successful applications a rare events method for study multistability in turbulent flow without stochastic energy injection. The trajectories collapse turbulence plane Couette flow, as well their probability and rate occurrence are systematically computed using \emph{Adaptive Multilevel Splitting} (AMS). AMS computations performed system size $L_x\times L_z=2...

Model-aided radiometric determination of photolysis frequencies in a sunlit atmosphere simulation chamber B. Bohn and H. Zilken Institut für Chemie und Dynamik der Geosphäre II: Troposphäre, Forschungszentrum Jülich, 52425 Jülich, Germany Zentralinstitut für Angewandte Mathematik, Forschungszentrum Jülich, 52425 Jülich, Germany Received: 3 September 2004 – Accepted: 15 October 2004 – Published:...

ROVERS: AN OVERVIEW. R. V. Morris, G. Klingelhöfer, D. W. Ming, C. Schröder, D. Rodionov, A. Yen, R. Gellert, and the Athena Science Team. ARES, NASA Johnson Space Center, Houston, TX 77058 ([email protected]). Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Staudinger Weg 9, 55128 Mainz, Germany. Jet Propulsion Laboratory, California Institute o...

Heterogeneous conversion of NO2 on secondary organic aerosol surfaces: A possible source of nitrous acid (HONO) in the atmosphere? R. Bröske, J. Kleffmann, and P. Wiesen Physikalische Chemie/FB 9, Bergische Universität – Gesamthochschule Wuppertal (BUGHW), D-42097 Wuppertal, Germany Received: 18 November 2002 – Accepted: 6 January 2003 – Published: 7 February 2003 Correspondence to: J. Kleffman...

High-speed photography was used to study the collapse of a confined two-dimensional, air cavity in water, subjected to a propagating pressure disturbance. The 5–6 mm diameter cavity was confined in a rectangular duct. A sustained pressure disturbance was created by an accelerating piston in contact with the water 240 mm away from the bubble. The pressure increased from 0.1 MPa to about 0.12 MPa...