Results 51 to 60 of about 11,014 (187)

The Effects Of Three Types Of Pre- And Post- Planetarium/ Starlab-Visit Instruction Methods On Astronomy Concepts And Attitudes Of Sixth Grade Students [PDF]

, 2000
The purpose of this study was to examine the effects of three different pre- and post- Planetarium/Starlab visit- instructional methodologies on astronomy concepts and attitudes for sixth grade students.
Meyer, Janis Ruth
core  

Gaussian Process Modeling Coronal X-Ray Variability of Active Galactic Nuclei

The Astrophysical Journal
The corona is an integral component of active galactic nuclei (AGNs) that can produce the X-ray emission. However, many of its physical properties and the mechanisms powering this emission remain a mystery.
Haiyun Zhang, Dahai Yan, Li Zhang, Niansheng Tang   +3 more
doaj   +1 more source

Detection techniques for the H.E.S.S. II telescope, data modeling of gravitational lensing and emission of blazars in HE-VHE astronomy

, 2013
This thesis presents the study of four aspects of high energy astronomy.The first part of my thesis is dedicated to an aspect of instrument development for imaging atmospheric Cherenkov telescopes, namely the Level 2 trigger system of the High Energy Stereoscopic System (H.E.S.S.).
openaire   +4 more sources

Genomics and data science: an application within an umbrella

Genome Biology, 2019
Data science allows the extraction of practical insights from large-scale data. Here, we contextualize it as an umbrella term, encompassing several disparate subdomains.
Fábio C. P. Navarro, Hussein Mohsen, Chengfei Yan, Shantao Li, Mengting Gu, William Meyerson, Mark Gerstein   +6 more
doaj   +1 more source

Maximum-likelihood Regression with Systematic Errors for Astronomy and the Physical Sciences. II. Hypothesis Testing of Nested Model Components for Poisson Data

The Astrophysical Journal
Abstract A novel model of systematic errors for the regression of Poisson data is applied to hypothesis testing of nested model components with the introduction of a generalization of the ΔC statistic that applies in the presence of systematic errors. This paper shows that the null-hypothesis parent distribution of this ΔC
Massimiliano Bonamente, Dale Zimmerman, Yang Chen   +2 more
openaire   +3 more sources

Astronomy Reports V. 49, I. 10 [PDF]

, 2005
Astronomy Reports -- October 2005 Volume 49, Issue 10, pp. 771-857 Effective Curvature of the Universe in Observations of Distant Objects E. V. Ivanova and O. S. Khovanskaya pp.

core  

Searching for Ground Truth: a stepping stone in automating genre classification [PDF]

, 2007
This paper examines genre classification of documents and its role in enabling the effective automated management of digital documents by digital libraries and other repositories.
Yunhyong Kim, Ross, S., Kim, Dr Yunhyong, Ross, Seamus, Kim, Y., Seamus Ross   +5 more
core   +1 more source

Modeling radial velocities of HD 240210 with the Genetic Algorithm [PDF]

, 2011
More than 450 extrasolar planets are known to date. To detect these intriguing objects many photometric and radial velocity surveys are in progress. We developed the Keplerian FITting code, to model published and available radial velocity data. This code
Migaszewski, C., Gozdziewski, K., Rozenkiewicz, A.   +2 more
core   +5 more sources

dolphin: A Fully Automated Forward-modeling Pipeline Powered by Artificial Intelligence for Galaxy-scale Strong Lenses

The Astrophysical Journal
Strong gravitational lensing is a powerful tool for probing the internal structure and evolution of galaxies, the nature of dark matter, and the expansion history of the Universe, among many other scientific applications.
Anowar J. Shajib, Nafis Sadik Nihal, Chin Yi Tan, Vedant Sahu, Simon Birrer, Tommaso Treu, Joshua Frieman   +6 more
doaj   +1 more source

Low frequency radio astronomy instrumentation, analysis, modelling and data publication

, 2022
Low frequency radio emissions (
openaire   +1 more source