Results 51 to 60 of about 73,255 (202)

Electroluminescence and Franz–Keldysh Modulation Observed in Sn/Ge Multi‐Quantum Wells

Advanced Optical Materials, EarlyView.
We investigate the optoelectronic properties of PIN diodes based on ultrathin α‐Sn/Ge multiple quantum film structures, fabricated by molecular beam epitaxy, both experimentally and theoretically. The samples exhibit a light emission spectrum in the short‐wavelength infrared range with two transitions. Furthermore, when operating as a photodetector, we
Michael Oehme, Damiano Marian, Maurice Wanitzek, Christian Spieth, Daniel Schwarz, Florian Bärwolf, Markus Andreas Schubert, Alwin Daus, Michele Virgilio, Giovanni Capellini   +9 more
wiley   +1 more source

Environmental Stability and Electronic Properties of Individual Flakes of Ti2CTx MXene

Advanced Electronic Materials, EarlyView.
The paper presents a synthesis of large Ti2CTx MXene flakes with sizes reaching 40 µm and examines their environmental stability and electronic behavior. It demonstrates that monolayer flakes degrade rapidly in ambient conditions, leading to semiconducting‐like behavior with low conductivity and mobility. In contrast, multilayer flakes exhibit enhanced
Md. Ibrahim Kholil, Alexey Lipatov, Saman Bagheri, Hanna Pazniak, Venera Alimova, Alexander Sinitskii   +5 more
wiley   +1 more source

Employing Blockchain, NFTs, and Digital Certificates for Unparalleled Authenticity and Data Protection in Source Code: A Systematic Review

Computers
In higher education, especially in programming-intensive fields like computer science, safeguarding students’ source code is crucial to prevent theft that could impact learning and future careers.
Leonardo Juan Ramirez Lopez, Genesis Gabriela Morillo Ledezma   +1 more
doaj   +1 more source

A new method to measure EC50 reveals cultivar‐specific fungicide resistance and very high diversity within experimental field populations of Zymoseptoria tritici

Pest Management Science, EarlyView.
We isolated Zymoseptoria tritici strains from a diverse wheat field and quantified fungicide resistance using a novel plate assay. We found high diversity in fungicide sensitivity and host–fungicide–pathogen interactions. Abstract BACKGROUND Zymoseptoria tritici causes Septoria tritici blotch (STB), the most damaging wheat disease in Europe. In Europe,
Firas Talas, Jessica Stapley, Bruce A McDonald   +2 more
wiley   +1 more source

Expert aggregation for financial forecasting

Journal of Finance and Data Science, 2023
Machine learning algorithms dedicated to financial time series forecasting have gained a lot of interest. But choosing between several algorithms can be challenging, as their estimation accuracy may be unstable over time.
Carl Remlinger, Clémence Alasseur, Marie Brière, Joseph Mikael   +3 more
doaj   +1 more source

Parallaxes of southern extremely cool objects (PARSEC). II : Spectroscopic follow-up and parallaxes of 52 targets [PDF]

, 2013
We present near-infrared spectroscopy for 52 ultracool dwarfs, including two newly discovered late-M dwarfs, one new late-M subdwarf candidate, three new L, and four new T dwarfs. We also present parallaxes and proper motions for 21 of them.
A. C. Day-Jones, A. H. Andrei, A. Sozzetti, Allard, Andrei, B. Bucciarelli, Bakos, Baraffe, Barman, Bouy, Burgasser, Burgasser, Burgasser, Burrows, Burrows, Burrows, Cruz, Cruz, Cruz, Cushing, D. J. Pinfield, Dupuy, Dupuy, Epchtein, F. Marocco, Faherty, Faherty, Fan, Finch, Gizis, Goldman, Golimowski, H. R. A. Jones, Hawley, J. L. Penna, J. R. A. Clarke, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Knapp, Kurucz, Leggett, Liebert, Looper, Looper, Lépine, Marley, Nielsen, Nissen, P. W. Lucas, R. L. Smart, Reid, Reid, Reid, Rojas-Ayala, Saumon, Schmidt, Seifahrt, Skemer, Skrutskie, Stephens, Tokunaga, Wright, York   +66 more
core   +2 more sources

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

‘Mere Amateurs’? Elementary Teachers and the Making of Scientific Authority in the British Child Study Movement

History, EarlyView.
Abstract This article offers new perspectives on the relationship between elementary teaching, scientific expertise and the professionalization of the human sciences. Previous scholarship has demonstrated the ready existence of ‘amateur’ science societies in the nineteenth century where cross‐class exchanges were common.
Julia Gustavsson
wiley   +1 more source

Molecule mapping of HR8799b using OSIRIS on Keck: Strong detection of water and carbon monoxide, but no methane

, 2018
Context. In 2015, Barman et al. (ApJ, 804, 61) presented detections of absorption from water, carbon monoxide, and methane in the atmosphere of the directly imaged exoplanet HR8799b using integral field spectroscopy (IFS) with OSIRIS on the Keck II ...
de la Roche, D. J. M. Petit dit, Hoeijmakers, H. J., Snellen, I. A. G.   +2 more
core   +1 more source

Iron Ore Pricing in China: Financialization Through a Marxist Lens

Abacus, EarlyView.
We offer a Marxist interpretation of financialization as we examine the Chinese market for iron ore and the shift in the pricing mechanism from an annual fixed price to an indexed price from 2010. Drawing upon Marx's theory of the circuit of capital, we illustrate an empirical case of financialization that results from the conflict between social ...
Xun Gong, Eagle Zhang, Corinne Cortese
wiley   +1 more source