Results 21 to 30 of about 211,055 (241)

Innovative Analysis Ready Data (ARD) product and process requirements, software system design, algorithms and implementation at the midstream as necessary-but-not-sufficient precondition of the downstream in a new notion of Space Economy 4.0 - Part 2: Software developments

Big Earth Data, 2023
Aiming at the convergence between Earth observation (EO) Big Data and Artificial General Intelligence (AGI), this paper consists of two parts. In the previous Part 1, existing EO optical sensory image-derived Level 2/Analysis Ready Data (ARD) products ...
Andrea Baraldi, Luca D. Sapia, Dirk Tiede, Martin Sudmanns, Hannah Augustin, Stefan Lang   +5 more
doaj   +1 more source

Multiple imputation methods for handling missing values in a longitudinal categorical variable with restrictions on transitions over time: a simulation study

BMC Medical Research Methodology, 2019
Background Longitudinal categorical variables are sometimes restricted in terms of how individuals transition between categories over time. For example, with a time-dependent measure of smoking categorised as never-smoker, ex-smoker, and current-smoker ...
Anurika Priyanjali De Silva, Margarita Moreno-Betancur, Alysha Madhu De Livera, Katherine Jane Lee, Julie Anne Simpson   +4 more
doaj   +1 more source

A systematic approach towards missing lab data in electronic health records: A case study in non‐small cell lung cancer and multiple myeloma

CPT: Pharmacometrics & Systems Pharmacology, 2023
Real‐world data derived from electronic health records often exhibit high levels of missingness in variables, such as laboratory results, presenting a challenge for statistical analyses.
Arjun Sondhi, Janick Weberpals, Prakirthi Yerram, Chengsheng Jiang, Michael Taylor, Meghna Samant, Sarah Cherng   +6 more
doaj   +1 more source

Multiple imputation for handling missing outcome data when estimating the relative risk

BMC Medical Research Methodology, 2017
Background Multiple imputation is a popular approach to handling missing data in medical research, yet little is known about its applicability for estimating the relative risk.
Thomas R. Sullivan, Katherine J. Lee, Philip Ryan, Amy B. Salter   +3 more
doaj   +1 more source

Continued expression of GATA3 is necessary for cochlear neurosensory development. [PDF]

PLoS ONE, 2013
Hair cells of the developing mammalian inner ear are progressively defined through cell fate restriction. This process culminates in the expression of the bHLH transcription factor Atoh1, which is necessary for differentiation of hair cells, but not for ...
Jeremy S Duncan, Bernd Fritzsch
doaj   +1 more source

Fully-Coupled FSI Computational Analyses in the Ascending Thoracic Aorta Using Patient-Specific Conditions and Anisotropic Material Properties

Frontiers in Physiology, 2021
Computational hemodynamics has become increasingly important within the context of precision medicine, providing major insight in cardiovascular pathologies. However, finding appropriate compromise between speed and accuracy remains challenging in computational hemodynamics for an extensive use in decision making. For example, in the ascending thoracic
Vignali, Emanuele, Gasparotti, Emanuele, Celi, Simona, Avril, Stéphane   +3 more
openaire   +4 more sources

Multiple Imputation in the Austrian Household Survey on Housing Wealth

Austrian Journal of Statistics, 2014
This paper presents the multiple imputation model for the imputation of the missing values of the Austrian Household Survey on Housing Wealth 2008. It is based on Bayesian inference and on the fully conditional specification approach.
Nicolas Albacete
doaj   +1 more source

Multiple imputation of missing data in large studies with many variables: A fully conditional specification approach using partial least squares

Psychological Methods, 2023
Multiple imputation (MI) is one of the most popular methods for handling missing data in psychological research. However, many imputation approaches are poorly equipped to handle large numbers of variables, which are a common sight in studies that employ questionnaires to assess psychological constructs.
Simon Grund, Oliver Lüdtke, Alexander Robitzsch   +2 more
openaire   +2 more sources

Gfi1 Loss Protects against Two Models of Induced Diabetes

Cells, 2021
Background: Although several approaches have revealed much about individual factors that regulate pancreatic development, we have yet to fully understand their complicated interplay during pancreas morphogenesis. Gfi1 is transcription factor specifically
Tiziana Napolitano, Fabio Avolio, Serena Silvano, Sara Forcisi, Anja Pfeifer, Andhira Vieira, Sergi Navarro-Sanz, Marika Elsa Friano, Chaïma Ayachi, Anna Garrido-Utrilla, Josipa Atlija, Biljana Hadzic, Jérôme Becam, Anette Sousa-De-Veiga, Magali Dodille Plaisant, Shruti Balaji, Didier F. Pisani, Magali Mondin, Philippe Schmitt-Kopplin, Ez-Zoubir Amri, Patrick Collombat   +20 more
doaj   +1 more source

Recovery of information from multiple imputation: a simulation study

Emerging Themes in Epidemiology, 2012
Background Multiple imputation is becoming increasingly popular for handling missing data. However, it is often implemented without adequate consideration of whether it offers any advantage over complete case analysis for the research question of ...
Lee Katherine J, Carlin John B
doaj   +1 more source