Results 21 to 30 of about 11,041 (113)

Bias caused by a popular weighting scheme

open access: yesJournal of Applied Crystallography, Volume 58, Issue 1, Page 283-289, February 2025.
The systematic error of systematically too small formal standard uncertainties of the observed intensities cannot be corrected for by the popular SHELXL‐like weighting scheme. Instead, it disguises the error and induces bias in the equivalent isotropic atomic displacement parameters.It is reported how the popular SHELXL‐like weighting scheme leads to ...
Julian Henn
wiley   +1 more source

Gravitoastronomy with neutron stars [PDF]

open access: yes, 2004
Recent advances in gravitational wave detectors mean that we can start to make astrophysically important statements about the physics of neutron stars based on observed upper limits to their gravitational luminosity.
Woan, G.
core   +1 more source

IVOA Recommendation: Resource Metadata for the Virtual Observatory Version 1.12

open access: yes, 2011
An essential capability of the Virtual Observatory is a means for describing what data and computational facilities are available where, and once identified, how to use them.
Group, the IVOA Resource Registry Working   +2 more
core   +1 more source

A Structural Model of Data Warehousing Success [PDF]

open access: yes, 2008
Data warehousing is an important area of practice and research, yet few studies have assessed its practices in general and critical success factors in particular.
Hwang, Mark I., Xu, Hongjiang
core   +2 more sources

Investigating the Dark Figure of COVID-19 Cases in Austria: Borrowing From the Decode Genetics Study in Iceland [PDF]

open access: yes, 2020
The number of undetected cases of SARS-CoV-2 infections is expected to be a multiple of the reported figures mainly due to the assumed high proportion of asymptomatic infections and to limited availability of trustworthy testing resources. Relying on the
Hirk, Rainer   +2 more
core   +1 more source

An automated ETL for online datasets [PDF]

open access: yes, 2019
While using online datasets for machine learning is commonplace today, the quality of these datasets impacts on the performance of prediction algorithms.
McCarren, Andrew   +2 more
core   +1 more source

Nursing and community rates of Mycobacterium tuberculosis infection among students in Harare, Zimbabwe.

open access: yes, 2007
BACKGROUND: African hospitals have experienced major increases in admissions for tuberculosis, but they are ill-equipped to prevent institutional transmission.
Corbett, Elizabeth L   +11 more
core   +1 more source

Application of large underground seasonal thermal energy storage in district heating system: A model-based energy performance assessment of a pilot system in Chifeng, China [PDF]

open access: yes, 2018
Seasonal thermal energy storage (STES) technology is a proven solution to resolve the seasonal discrepancy between heating energy generation from renewables and building heating demands.
Guo, Fang   +4 more
core   +2 more sources

Open business intelligence: on the importance of data quality awareness in user-friendly data mining [PDF]

open access: yes, 2012
Citizens demand more and more data for making decisions in their daily life. Therefore, mechanisms that allow citizens to understand and analyze linked open data (LOD) in a user-friendly manner are highly required.
Espinosa, Roberto   +4 more
core   +1 more source

The Agulhas Ridge, South Atlantic: the peculiar structure of a fracture zone [PDF]

open access: yes, 2005
The Agulhas Ridge is a prominent topographic feature that parallels the Agulhas-Falkland Fracture Zone (AFFZ). Seismic reflection and wide angle/refraction data have led to the classification of this feature as a transverse ridge.
Gohl, Karsten   +1 more
core   +1 more source

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