Results 91 to 100 of about 5,932 (169)
A compact and low insertion loss programmable photonic circuit is demonstrated based on a 7‐cell hexagonal waveguide mesh with a large free spectral range (FSR) of 31 GHz for a 6‐gate ring resonator configuration. Vernier rings and a dual‐injected ring configuration are demonstrated on this circuit with a further improved FSR of 93 GHz.
Yu Zhang +6 more
wiley +1 more source
Evaluating anisotropy‐based Monin–Obukhov similarity theory over canopies and complex terrain
This study shows that an anisotropy‐based generalization of Monin–Obukhov surface‐layer scaling (SC23) applies readily across a wide range of atmospheric conditions with variable terrain, canopies, and land‐cover complexity. This work focuses on the scaling of velocity variances for 7 years at the 47 sites in the National Ecological Observation Network
Tyler S. Waterman +3 more
wiley +1 more source
Evolutionary Directions of the European Union Policy in favour of Small and Medium-Sized Enterprises and Entrepreneurship [PDF]
The aim of the article is the presentation as well as the analysis of the most important directions of the European Union activities in favour of entrepreneurship, especially small and medium-sized enterprises (SMEs).
Wach, Krzysztof
core +1 more source
Large‐scale characterization of horizontal forest structure from remote sensing optical images
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu +12 more
wiley +1 more source
Regulated versus unregulated competition: How drug shortages boost illegal pharmacy sales
Abstract Research Summary This study examines how product shortages among legal firms create competitive opportunities for illegal firms. We analyze 713 drug shortages in the United States between 2017 and 2023 and show that shortages substantially increase illicit pharmacies’ sales of affected drugs, which rise by 40.5% during shortages and remain 32 ...
Luis Diestre, Benjamin Barber IV
wiley +1 more source
Enhancing Charge Transport and Extraction in Ta3N5 Photoanodes Via Ti Doping and TiN Contact Layers
Ta3N5${\rm Ta}_3{\rm N}_{5}$ is a promising photoanode for solar water splitting but suffers from poor charge transport and interfacial losses. We combine Ti compensation doping with ultrathin TiN back‐contact interlayers to suppress bulk recombination, enhance carrier mobility and lifetime, and enable efficient carrier extraction, yielding ...
Laura I. Wagner +8 more
wiley +1 more source
This study shows that human iPSC‐derived endothelial cells acquire a functional blood–brain barrier phenotype when co‐cultured with brain pericytes and stimulated with CHIR‐99021, a Wnt/β‐catenin activator. This model recapitulates key barrier properties, inflammatory responses, and transcriptomic features of the native human BBB, offering new ...
Henrique Nogueira Pinto +12 more
wiley +1 more source
Zagadnienia integracji europejskiej w edukacji historycznej i obywatelskiej [PDF]
Konopka, Hanna
core +1 more source
Does Proactivity Affect Insurance Solidarity and Individual Responsibility?
ABSTRACT Over the past 20 years, the insurance industry has been experimenting with technological innovations that deeply affect its business model and social function. This article explores the use of digital technologies to monitor policyholders' behaviour and personalise their insurance coverage.
Alberto Cevolini, Elena Esposito
wiley +1 more source
We present a 25‐stage reconstruction of the ice‐flow pattern evolution of the Scandinavian Ice Sheet based on mapping and analysis of ~240 000 subglacial lineations and lineation fields across Norway, Sweden, Finland, and parts of NW Russia. Our reconstruction uses a glacial geomorphological inversion approach, in which we generated 611 individual ...
Frances E. G. Butcher +9 more
wiley +1 more source

