Results 131 to 140 of about 1,643 (192)

Simplex‐based model for nanoparticle grain identification in four‐dimensional scanning transmission electron microscopy data

open access: yesJournal of Microscopy, EarlyView.
Abstract Grain identification in polycrystalline nanoparticles, for example, determining which crystal phases are present at each spatial location, is fundamental to materials characterisation. This is particularly challenging when grains overlap extensively, as commonly occurs in four‐dimensional scanning transmission electron microscopy (4D‐STEM ...
Wei Liu   +5 more
wiley   +1 more source

Blood flow in the human cerebral cortex: Large-scale pial vascularization and 1D simulation. [PDF]

open access: yesPLoS Comput Biol
Zilves EG   +5 more
europepmc   +1 more source

How do forelimb long bones adapt in rhinoceroses? An in‐depth examination of their microanatomy

open access: yesJournal of Anatomy, EarlyView.
Here, we study the bone structure in the forelimb long bones of the five extant species of rhinoceroses. By combining traditional description of virtual sections made on the bones (A) with in‐depth cartographies of the variation of bone compactness and anisotropy (B), we show how bone tissue can adapt to extreme forces and constraints in the second ...
Cyril Etienne   +3 more
wiley   +1 more source

Optimal Simple Ratings

open access: yesThe Journal of Industrial Economics, EarlyView.
ABSTRACT We study optimal simple rating systems that partition sellers into a finite number of tiers. We show that optimal ratings must be threshold partitions, and that for linear supply and Cournot competition with constant marginal cost, optimal thresholds solve a k‐means clustering problem requiring only the quality distribution.
Hugo Hopenhayn, Maryam Saeedi
wiley   +1 more source

Bad NGOs? Competition in the Market for Donations and Workers' Misconduct

open access: yesThe Journal of Industrial Economics, EarlyView.
ABSTRACT In this paper, we investigate how competition among NGOs to attract donations shapes the incentives that NGOs provide to their employees. NGOs hire workers to undertake development projects, which are horizontally and vertically differentiated.
Nadia Burani, Ester Manna
wiley   +1 more source

Testing Distributional Granger Causality With Entropic Optimal Transport

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley   +1 more source

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