5,291 research outputs found
Judge Parker and the Public Service State
The work described in this thesis is part of the Open Space project, a collaboration between Linköping University, NASA and the American Museum of Natural History. The long-term goal of Open Space is a multi-purpose, open-source scientific visualization software. The thesis covers the research and implementation of a pipeline for preparing and rendering volumetric data. The developed pipeline consists of three stages: A data formatting stage which takes data from various sources and prepares it for the rest of the pipeline, a pre-processing stage which builds a tree structure of of the raw data, and finally an interactive rendering stage which draws a volume using ray-casting. The pipeline is a fully working proof-of-concept for future development of Open Space, and can be used as-is to render space weather data using a combination of suitable data structures and an efficient data transfer pipeline. Many concepts and ideas from this work can be utilized in the larger-scale software project
Ariel - Volume 6 Number 2
Editors
Mark Dembert
J.D. Kanofsky
Frank Chervenak
John Lammie
Curt Cummings
Entertainment
Robert Breckenridge
Joe Conti
Gary Kaskey
Photographer
Larry Glazerman
Overseas Editor
Mike Sinason
Humorist
Jim McCann
Staff
Ken Jaffe
Bob Skarloff
Halley Faust
Jim Burk
Integrated Flywheel Technology, 1983
Topics of discussion included: technology assessment of the integrated flywheel systems, potential of system concepts, identification of critical areas needing development and, to scope and define an appropriate program for coordinated activity
Extending the Finite Domain Solver of GNU Prolog
International audienceThis paper describes three significant extensions for the Finite Domain solver of GNU Prolog. First, the solver now supports negative integers. Second, the solver detects and prevents integer overflows from occurring. Third, the internal representation of sparse domains has been redesigned to overcome its current limitations. The preliminary performance evaluation shows a limited slowdown factor with respect to the initial solver. This factor is widely counterbalanced by the new possibilities and the robustness of the solver. Furthermore these results are preliminary and we propose some directions to limit this overhead
SHEAR DRIVEN SUPPRESSED NUCLEATION ANNULAR FLOW-BOILING IN MILLIMETER-SCALE CHANNELS: DIRECT NUMERICAL SIMULATIONS
Many contemporary high heat-flux cooling applications are facilitated by mm-scale flow-boilers that operate in the steady annular suppressed nucleation regime (i.e., a thin evaporating liquid film flow covers the heated boiling-surface).
For such cases, this thesis presents a direct numerical simulation (DNS) approach. The steady algorithm and its accuracy are discussed. Representative detailed solutions for annular flow-boiling of FC-72 in a horizontal channel are presented
Issues of Water Management in Agriculture: Compilation of Essays
The Comprehensive Assessment of Water Management in Agriculture (CA), takes stock of the global situation in managing water for agriculture, provides key additional information in this field, and scopes out future research and action needs. The CGIAR Challenge Program on Water and Food (CP Water and Food) will follow up on the recommendations of the CA to provide critical knowledge in the public domain, and turn this knowledge into action towards solving the world’s water problems. This book contains essays from lead scientists from partner organizations in these initiatives. Topics include..
- …