Results 21 to 30 of about 16,649 (216)

Important Variables in Granulocyte Chemiluminescence

open access: yesExperimental Biology and Medicine, 1979
SummaryA CL system consisting of canine granulocytes stimulated with opsonized zymosan was used to examine factors which lead to variability in light production. Variability of CL response was associated with granulocyte aggregation. Granulocyte aggregation was reduced by: (i) reducing centrifu-gation and mixing forces used to prepare cell suspensions,
B R, Andersen, H J, Amirault
openaire   +2 more sources

Mapping stand age of rubber plantation using ALOS-2 polarimetric SAR data

open access: yesEuropean Journal of Remote Sensing, 2017
This paper presents an evaluation on strategies for rubber plantation mapping employing SAR data coupled with Random Forest (RF) and Support Vector Machine (SVM).
Bambang H. Trisasongko
doaj   +1 more source

Vegetation Fuel Mapping at Regional Scale Using Sentinel-1, Sentinel-2, and DEM Derivatives—The Case of the Region of East Macedonia and Thrace, Greece

open access: yesRemote Sensing, 2023
The sustainability of Mediterranean ecosystems, even if previously shaped by fire, is threatened by the diverse changes observed in the wildfire regime, in addition to the threat to human security and infrastructure losses. During the two previous years,
Irene Chrysafis   +5 more
doaj   +1 more source

Variable Importance Clouds: A Way to Explore Variable Importance for the Set of Good Models

open access: yesCoRR, 2019
Variable importance is central to scientific studies, including the social sciences and causal inference, healthcare, and other domains. However, current notions of variable importance are often tied to a specific predictive model. This is problematic: what if there were multiple well-performing predictive models, and a specific variable is important ...
Jiayun Dong, Cynthia Rudin
openaire   +2 more sources

Evaluation of Four Supervised Learning Methods for Benthic Habitat Mapping Using Backscatter from Multi-Beam Sonar

open access: yesRemote Sensing, 2012
An understanding of the distribution and extent of marine habitats is essential for the implementation of ecosystem-based management strategies. Historically this had been difficult in marine environments until the advancement of acoustic sensors.
Jacquomo Monk   +2 more
doaj   +1 more source

Retrieval of Leaf Area Index Using Sentinel-2 Imagery in a Mixed Mediterranean Forest Area

open access: yesISPRS International Journal of Geo-Information, 2020
Leaf area index (LAI) is a crucial biophysical indicator for assessing and monitoring the structure and functions of forest ecosystems. Improvements in remote sensing instrumental characteristics and the availability of more efficient statistical ...
Irene Chrysafis   +3 more
doaj   +1 more source

NeuralSens: Sensitivity Analysis of Neural Networks

open access: yesJournal of Statistical Software, 2022
This article presents the NeuralSens package that can be used to perform sensitivity analysis of neural networks using the partial derivatives method. The main function of the package calculates the partial derivatives of the output with regard to the ...
Jaime Pizarroso   +2 more
doaj   +1 more source

Physical activity - an important preanalytical variable [PDF]

open access: yesBiochemia Medica, 2014
The concentration of several biochemical and hematological biomarkers is strongly influenced by a number of preanalytical variables. Several lines of evidence attest that short, middle, and long-term exercise, as well as the relative intensity of physical effort (from mild to strenuous), may influence a broad array of laboratory variables.
Sanchis Gomar F, LIPPI, Giuseppe
openaire   +3 more sources

A Combined Random Forest and OBIA Classification Scheme for Mapping Smallholder Agriculture at Different Nomenclature Levels Using Multisource Data (Simulated Sentinel-2 Time Series, VHRS and DEM)

open access: yesRemote Sensing, 2017
Sentinel-2 images are expected to improve global crop monitoring even in challenging tropical small agricultural systems that are characterized by high intra- and inter-field spatial variability and where satellite observations are disturbed by the ...
Valentine Lebourgeois   +5 more
doaj   +1 more source

PUBO$$_i$$: A Tunable Benchmark with Variable Importance

open access: yes, 2022
In this work, we present the benchmark generator PUBOi, Polynomial Unconstrained Binary Optimization, that combines subproblems to create instances of pseudo-boolean optimization problems. Any mono-objective pseudoboolean functions including existing classical optimization problems can be expressed with Walsh functions. The benchmark generator can tune
Tari, Sara   +2 more
openaire   +2 more sources

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