Results 41 to 50 of about 1,708,096 (323)
An allometry-based approach for understanding forest structure, predicting tree-size distribution and assessing the degree of disturbance [PDF]
, 2012 Tree-size distribution is one of the most investigated subjects in plant population biology. The forestry literature reports that tree-size distribution trajectories vary across different stands and/or species, while the metabolic scaling theory suggests
Anfodillo, Tommaso +5 more
core +2 more sources
Notes on the scattering amplitude / Wilson loop duality
, 2010 We consider the duality between the four-dimensional S-matrix of planar maximally supersymmetric Yang-Mills theory and the expectation value of polygonal shaped Wilson loops in the same theory.
Caron-Huot, Simon
core +1 more source
MHV Rules for Higgs Plus Multi-Gluon Amplitudes [PDF]
, 2004 We use tree-level perturbation theory to show how non-supersymmetric one-loop scattering amplitudes for a Higgs boson plus an arbitrary number of partons can be constructed, in the limit of a heavy top quark, from a generalization of the scalar graph ...
A. Brandhuber +49 more
core +4 more sources
Improvement of ID3 Algorithm Based on Simplified Information Entropy and Coordination Degree
Algorithms, 2017 The decision tree algorithm is a core technology in data classification mining, and ID3 (Iterative Dichotomiser 3) algorithm is a famous one, which has achieved good results in the field of classification mining.
Yingying Wang +4 more
doaj +1 more source
BCJ numerators from differential operator of multidimensional residue
European Physical Journal C: Particles and Fields, 2020 In previous works, we devised a differential operator for evaluating typical integrals appearing in the Cachazo–He–Yuan (CHY) forms and in this paper we further streamline this method.
Gang Chen, Tianheng Wang
doaj +1 more source
Deep Fuzzy Tree for Large-Scale Hierarchical Visual Classification
IEEE transactions on fuzzy systems, 2020 Deep learning models often use a flat softmax layer to classify samples after feature extraction in visual classification tasks. However, it is hard to make a single decision of finding the true label from massive classes.
Yu Wang +6 more
semanticscholar +1 more source
Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target
FEBS Letters, EarlyView.This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz +5 more
wiley +1 more source
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source
A New Method to Identify Incomplete Frame of Discernment in Evidence Theory
IEEE Access, 2019 One assumption of Dempster-Shafer evidence theory (D-S theory) is the closed world. However, how to determine whether the frame of discernment is incomplete or not is still an open issue.
Renliang Sun, Yong Deng
doaj +1 more source
All Split Helicity Tree-Level Gluon Amplitudes
, 2005 Recently a new recursion relation for tree-level gluon amplitudes in gauge theory has been discovered. We solve this recursion to obtain explicit formulas for the closed set of amplitudes with arbitrarily many positive and negative helicity gluons in a ...
Anastasia Volovich +6 more
core +3 more sources