Results 1 to 10 of about 157,157 (179)

Occurrence cubes : a new paradigm for aggregating species occurrence data [PDF]

, 2020
In this paper we describe a method of aggregating species occurrence data into what we coined “occurrence cubes”. The aggregated data can be perceived as a cube with three dimensions - taxonomic, temporal and geographic - and takes into account the ...
Adriaens, Tim, Davis, Amy, Desmet, Peter, Groom, Quentin, Oldoni, Damiano, Reyserhove, Lien, Strubbe, Diederik, Vanderhoeven, Sonia   +7 more
core   +1 more source

Partial-sum queries in OLAP data cubes using covering codes [PDF]

, 1997
A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish a connection between the covering problem in the theory of error-correcting codes and the partial-sum problem and use this connection to devise ...
Ching-tien Ho, Jehoshua Bruck, Rakesh Agrawal, Senior Member, Senior Member   +4 more
core   +3 more sources

The Spectral Correlation Function -- A New Tool for Analyzing Spectral-Line Maps [PDF]

, 1999
The "spectral correlation function" analysis we introduce in this paper is a new tool for analyzing spectral-line data cubes. Our initial tests, carried out on a suite of observed and simulated data cubes, indicate that the spectral correlation function [
Goodman, Alyssa A., Rosolowsky, Erik W., Williams, Jonathan P., Wilner, David J.   +3 more
core   +4 more sources

Mechanical properties of concrete containing palm oil fuel ash and modified expanded polystyrene beads as replacement materials using finite element method [PDF]

, 2020
Nowadays, so much waste material was dumped and produced by the industrial sector. In this research, the Palm Oil Fuel Ash (POFA) and Modified Expanded Polystyrene beads (EPS) were used as replacement material.
A Rahman, Noor Khazanah, Adnan, Suraya Hani, Mahamad, Mimi Suliza, Mat Nor, Ahmad Hakimi, Osman, Mohamad Hairi, Ruslan, Mohd Syamil, Salim, Salman   +6 more
core   +1 more source

Optimizing Selections over Data Cubes [PDF]

, 1998
Datacube queries compute aggregates over data base relations at a variety of granularities, and they constitute an important class of decision support queries.
Ross, Kenneth A., Zaman, Kazi A.
core   +2 more sources

Simulating the WFIRST coronagraph Integral Field Spectrograph [PDF]

, 2017
A primary goal of direct imaging techniques is to spectrally characterize the atmospheres of planets around other stars at extremely high contrast levels.
Brandt, Timothy D., Cady, Eric J., Cahoy, Kerri, Douglas, Ewan, Gong, Qian, Groff, Tyler D., Krist, John, Mandell, Avi M., McElwain, Michael W., Prada, Camilo Mejia, Riggs, AJ Eldorado, Rizzo, Maxime J., Roberge, Aki, Saxena, Prabal, Zimmerman, Neil T.   +14 more
core   +2 more sources

KMOS Data Flow: Reconstructing Data Cubes in One Step

, 2010
KMOS is a multi-object near-infrared integral field spectrometer with 24 deployable pick-off arms. Data processing is inevitably complex. We discuss specific issues and requirements that must be addressed in the data reduction pipeline, the calibration ...
Berbel, Alex Agudo, Davies, Richard, Ott, Thomas, Schreiber, Natascha Foerster, Wiezorrek, Erich   +4 more
core   +1 more source

SkuareView: Client-Server Framework for Accessing Extremely Large Radio Astronomy Image Data

, 2012
The new wide-field radio telescopes, such as: ASKAP, MWA, and SKA; will produce spectral-imaging data-cubes (SIDC) of unprecedented volume. This requires new approaches to managing and servicing the data to the end-user.
Cannon, Andrew D., Kitaeff, Vyacheslav V., Vinsen, Kevin, Wicenec, Andreas, Wu, Chen   +4 more
core   +1 more source

TurbuStat: Turbulence Statistics in Python

, 2019
We present TurbuStat (v1.0): a Python package for computing turbulence statistics in spectral-line data cubes. TurbuStat includes implementations of fourteen methods for recovering turbulent properties from observational data.
Boyden, Ryan D., Burkhart, Blakesley, Ginsburg, Adam, Koch, Eric W., Loeppky, Jason L., Offner, Stella S. R., Rosolowsky, Erik W.   +6 more
core   +1 more source

Hierarchical Structure of Magnetohydrodynamic Turbulence In Position-Position-Velocity Space [PDF]

, 2013
Magnetohydrodynamic turbulence is able to create hierarchical structures in the interstellar medium that are correlated on a wide range of scales via the energy cascade. We use hierarchical tree diagrams known as dendrograms to characterize structures in
A. Lazarian, Alyssa Goodman, Ballesteros-Paredes, Beresnyak, Blakesley Burkhart, Brunt, Brunt, Burkhart, Burkhart, Burkhart, Burkhart, Burkhart, Burkhart, Burkhart, Chepurnov, Chepurnov, Chepurnov, Chepurnov, Cho, Cho, Collins, Crutcher, Elmegreen, Elmegreen, Elmegreen, Erik Rosolowsky, Esquivel, Esquivel, Esquivel, Falceta-Gonçalves, Federrath, Federrath, Feitzinger, Ferriere, Goodman, Hill, Kim, Kowal, Larson, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Li, Liu, Lunttila, Maron, Ossenkopf, Ostriker, Padoan, Padoan, Padoan, Padoan, Pichardo, Rosolowsky, Rosolowsky, Rosolowsky, Sawlaw, Scalo, Stanimirovic, Stutzki, Tofflemire   +66 more
core   +2 more sources