Results 61 to 70 of about 3,809,270 (169)

Quasi Non-linear Evolution of Stochastic Bias

, 1998
It is generally believed that the spatial distribution of galaxies does not trace that of the total mass. The understanding of the bias effect is therefore necessary to determine the cosmological parameters and the primordial density fluctuation spectrum
Koyama, K., Soda, J., Taruya, A.
core   +2 more sources

Business datasets and record linkage: Correlates of linkage and estimating risks of non-linkage biases.

International Journal of Population Data Science, 2017
Objectives Our first objective is to investigate how between subject differences in the likelihood of record linkage consent and record linkability determine the composition of and so risks of biases in estimates from linkable business datasets.
Jamie Moore, Gabriele Durrant, Peter W. Smith   +2 more
doaj   +1 more source

An Evaluation of Design-based Properties of Different Composite Estimators

, 2020
For the last several decades, the US Census Bureau has been using the AK composite estimation method to produce statistics on employment from the Current Population Survey (CPS) data.
Bonnéry, Daniel, Cheng, Yang, Lahiri, Partha   +2 more
core   +1 more source

Bayesian physical reconstruction of initial conditions from large scale structure surveys

, 2012
We present a fully probabilistic, physical model of the non-linearly evolved density field, as probed by realistic galaxy surveys. Our model is valid in the linear and mildly non-linear regimes and uses second order Lagrangian perturbation theory to ...
Abazajian, Baugh, Benjamin D. Wandelt, Bernardeau, Bertschinger, Bouchet, Brenier, Buchert, Buchert, Crocce, Dekel, Dolag, Dolag, Doroshkevich, Duane, Eisenstein, Eisenstein, Elsner, Erdoğdu, Eriksen, Feldman, Frigo, Frisch, Galassi, Gottloeber, Górski, Hanson, Hastings, Heitmann, Hockney, Jasche, Jasche, Jasche, Jasche, Jasche, Jenkins, Jens Jasche, Jeong, Kitaura, Kitaura, Kitaura, Kitaura, Kitaura, Klypin, Komatsu, Kravtsov, Lahav, Lavaux, Lavaux, Layzer, Libeskind, Lidz, Linde, Linder, Martinez-Vaquero, Martínez, Matsumoto, Metropolis, Mohayaee, Moutarde, Neal, Neal, Nusser, Peacock, Peacock, Peebles, Percival, Schechter, Schäfer, Scoccimarro, Scoccimarro, Scoccimarro, Smith, Swanson, Tatekawa, Taylor, Tegmark, Turner, Wandelt, Wang, Zaroubi, Zel’Dovich   +81 more
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The logical thinking abilities of high school students in relation to their cognitive development stage [PDF]

SHS Web of Conferences
Logical thinking is an essential skill for students’ academic success, particularly in science and mathematics. This study seeks to examine high school students' logical thinking abilities in relation to their cognitive development stage, based on Piaget'
Rakhmawan Aditya
doaj   +1 more source

Computing the Accuracy of Complex Non-Random Sampling Methods: The Case of the Bank of Canada's Business Outlook Survey [PDF]

A number of central banks publish their own business conditions survey based on non-random sampling methods. The results of these surveys influence monetary policy decisions and thus affect expectations in financial markets.
Daniel de Munnik, David Dupuis, Mark Illing   +2 more
core  

Prediction beyond the survey sample: correcting for survey effects on consumer decisions. [PDF]

Direct extrapolation of survey results on purchase intentions may give a biased view onactual consumer behavior. This is because the purchase intentions of consumers maybe affected by the survey itself.
Franses, Ph.H.B.F., Heij, C.
core   +1 more source

Encoding Arguments

, 2017
Many proofs in discrete mathematics and theoretical computer science are based on the probabilistic method. To prove the existence of a good object, we pick a random object and show that it is bad with low probability.
Morin, Pat, Mulzer, Wolfgang, Reddad, Tommy   +2 more
core   +1 more source

A Systematic Review of Remotely Operated Vehicle Surveys for Visually Assessing Fish Assemblages

Frontiers in Marine Science, 2019
Anthropogenic activities and greater demands for marine natural resources has led to increases in the spatial extent and duration of pressures on marine ecosystems.
Darryn Sward, Jacquomo Monk, Neville Barrett   +2 more
doaj   +1 more source

Finding binary active galactic nuclei by the centroid shift in imaging surveys

, 2015
The census of binary active galactic nuclei (AGNs) is important in order to understand the merging history of galaxies and the triggering of AGNs. However, there is still no efficient method for selecting the candidates of binary AGNs.
Liu, Yuan
core   +1 more source