Results 51 to 60 of about 855,011 (194)

Tree-level (pi, K)-amplitude and analyticity

open access: yes, 1996
We consider the tree-level amplitude, describing all 3 channels of the binary (pi ,K)-reaction, as a meromorphic polynomially bounded function of 3 dependent complex variables.
A. Bolokhov   +53 more
core   +1 more source

The game coloring number of pseudo partial k-trees

open access: yesDiscrete Mathematics, 2000
The author introduces the class of \((a,b)\)-pseudo partial \(k\)-trees, where the parameters \(a\) and \(b\) measure a graph's deviation from being a partial \(k\)-tree (the case \(a= b= 0\)). It is shown that the game coloring number of an \((a,b)\)-pseudo partial \(k\)-tree is at most \(3k+ 2a+ b+ 2\); for \(a= b= 0\), this greatly improves the ...
openaire   +1 more source

Predicting Foliar Nutrient Concentrations across Geologic Materials and Tree Genera in the Northeastern United States Using Spectral Reflectance and Partial Least Squares Regression Models

open access: yesJournal of Remote Sensing
Spectral data can potentially offer a rapid assessment of nutrients in leaves and reveal information about the geologic history of the soil. This study evaluated the capability of the partial least squares regression (PLSR) for estimating foliar macro ...
Wenxiu Teng   +4 more
doaj   +1 more source

Evolution of spectral behavior and chemical composition in the tree canopy of a dehesa ecosystem

open access: yesRevista de Teledetección, 2016
In the context of the BIOSPEC and FLUXPEC projects (http://www.lineas.cchs.csic.es/fluxpec/), spectral and biophysical variables measurements at leaf level have been conducted in the tree canopy of a holm oak dehesa (Quercus ilex) ecosystem during four ...
R. González-Cascón   +2 more
doaj   +1 more source

Apple Yield Estimation Method Based on CBAM-ECA-Deeplabv3+ Image Segmentation and Multi-Source Feature Fusion

open access: yesSensors
Apple yield estimation is a critical task in precision agriculture, challenged by complex tree canopy structures, growth stage variability, and orchard heterogeneity.
Wenhao Cui   +8 more
doaj   +1 more source

Genotypic Characterization of Klebsiella pneumoniae Isolated from Human and Sheep in Al-Qadisiyah Province, Iraq

open access: yesJournal of Pure and Applied Microbiology, 2019
The current study was performed to identify the genotypes related to Klebsiella pneumonia isolated from urinary tract infection (UTI) of humans and pneumonia (PMN) of sheep in Al-Qadisiyah province, Iraq.
Abdulkareemsalman Alyassari   +3 more
doaj   +1 more source

Color ordering in QCD

open access: yes, 2013
We derive color decompositions of arbitrary tree and one-loop QCD amplitudes into color ordered objects called primitive amplitudes. Furthermore, we derive general fermion flip and reversion identities spanning the null space among the primitive ...
Schuster, Theodor
core   +1 more source

Maximum packing for k-connected partial k-trees in polynomial time

open access: yesTheoretical Computer Science, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dessmark, Anders   +2 more
openaire   +2 more sources

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