Results 11 to 20 of about 85,546 (299)

Radiation‐Belt Dropouts: Relationship With Geomagnetic Storms and MeV Precipitation

open access: yesGeophysical Research Letters
To better understand rapid radiation belt losses, this statistical study examines dropouts, defined as a phase‐space density (PSD) decrease by a factor of ≥5 within 8 hr.
Domenique Freund   +5 more
doaj   +2 more sources

Relativistic-electron dropouts and recovery: A superposed epoch study of the magnetosphere and the solar wind [PDF]

open access: yes, 2009
During 124 high-speed-stream-driven storms from two solar cycles, a multispacecraft average of the 1.1–1.5 MeV electron flux measured at geosynchronous orbit is examined to study global dropouts of the flux. Solar wind and magnetospheric measurements are
Denton, Michael H., Borovsky, J. E.
core   +4 more sources

Assessing electron heat flux dropouts as signatures of magnetic field line disconnection from the Sun [PDF]

open access: yes, 2005
Suprathermal electrons focused along magnetic field lines, called the strahl, carry heat flux away from the Sun. Various factors can cause heat flux dropouts (HFDs), including times when the strahl almost vanishes.
Larson, DE   +5 more
core   +2 more sources

Gene representation in scRNA-seq is correlated with common motifs at the 3′ end of transcripts

open access: yesFrontiers in Bioinformatics, 2023
One important characteristic of single-cell RNA sequencing (scRNA-seq) data is its high sparsity, where the gene-cell count data matrix contains high proportion of zeros.
Xinling Li, Greg Gibson, Peng Qiu
doaj   +1 more source

Dropped-out Students and the Decision to Drop-out in Hungary

open access: yesCentral European Journal of Educational Research, 2019
The interpretation of the phenomenon of student dropout, which represents a waste of a relatively large proportion of human and material capital in the social, individual and institutional domain, is impossible without examining dropout students. In this
Gabriella Pusztai   +3 more
doaj   +1 more source

Artificial Intelligence and Machine Learning Approaches in Digital Education: A Systematic Revision

open access: yesInformation, 2022
The use of artificial intelligence and machine learning techniques across all disciplines has exploded in the past few years, with the ever-growing size of data and the changing needs of higher education, such as digital education.
Hussan Munir   +2 more
doaj   +1 more source

An analysis of the causes of Master's Thesis dropouts

open access: yesWPOM : Working Papers on Operations Management, 2017
This paper addresses the reasons why a growing number of students are failing to complete their final master dissertations/thesis. It analyses the final Master's Course Thesis (TFM, Trabajo Fin de Máster) on the Masters in Advanced Business Management ...
Rafaela Alfalla Luque   +4 more
doaj   +1 more source

Factors influencing recruitment and retention of participants in clinical studies conducted at a tertiary referral center: A five-year audit

open access: yesPerspectives in Clinical Research, 2020
Introduction: A key determinant of the success of any study is the recruitment and subsequent retention of participants. Screen failure and dropouts impact both the scientific validity and financial viability of any study.
Debdipta Bose   +5 more
doaj   +1 more source

Professional strategies in upper secondary school dropout management among youth in the Sami areas of Norway: a focus group study

open access: yesInternational Journal of Circumpolar Health, 2023
The upper secondary school dropout rate is a challenge in many western countries, and measures have been taken to prevent dropout. The dropout rate in Norway is stable but is the highest in the northernmost counties.
Tone Aashild Dinesen   +2 more
doaj   +1 more source

McImpute: Matrix Completion Based Imputation for Single Cell RNA-seq Data

open access: yesFrontiers in Genetics, 2019
Motivation: Single-cell RNA sequencing has been proved to be revolutionary for its potential of zooming into complex biological systems. Genome-wide expression analysis at single-cell resolution provides a window into dynamics of cellular phenotypes ...
Aanchal Mongia   +3 more
doaj   +1 more source

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