Results 41 to 50 of about 300,940 (321)

A Pipeline for Graph-Based Monitoring of the Changes in the Information Space of Russian Social Media during the Lockdown

Мониторинг общественного мнения: экономические и социальные перемены, 2021
With the COVID-19 outbreak and the subsequent lockdown, social media became a vital communication tool. The sudden outburst of online activity influenced information spread and consumption patterns.
Вера Владимировна Данилова, Светлана Владимировна Попова, Вера Михайловна Карпова   +2 more
doaj   +1 more source

Implementation of the LDA+U method using the full potential linearized augmented plane wave basis

, 1999
We provide a straightforward and efficient procedure to combine LDA+U total energy functional with the full potential linearized augmented plane wave method. A detailed derivation of the LDA+U Kohn-Sham type equations is presented for the augmented plane
A. B. Shick, A. B. Shick, A. I. Liechtenstein, A. I. Liechtenstein, A. I. Liechtenstein, B. J. Beaudry, B. N. Harmon, D. J. Singh, E. Wimmer, H. J. Monkhorst, H. Sawada, I. V. Solovyev, J. P. Perdew, K. Terakura, M. Heinemann, O. Eriksson, S. L. Dudarev, S. Massida, V. I. Anisimov, W. E. Pickett   +19 more
core   +1 more source

Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production

Advanced Functional Materials, EarlyView.
Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons, Rhys J. Bourhill, Ewan McQueen, Sam D. Harding, Krzysztof Pawlak, Thomas Fellowes, Harry W. Capps, Alexander J. Cowan, Andrew I. Cooper, Adrian M. Gardner, Martijn A. Zwijnenburg, Reiner Sebastian Sprick   +11 more
wiley   +1 more source

Fragmento de armadura romana – lorica squamata – recolhida na baixa de Lisboa: Rua da Vitória / Rua dos Correeiros

Conimbriga
Em 2021, foi recolhida na baixa de Lisboa parte significativa de uma armadura de escamas, romana (lorica squamata), em liga de cobre. Trata-se de uma peça rara, identificada pela primeira vez em Portugal.
Paulo Rebelo, Márcio Beatriz, Guilherme Cardoso   +2 more
doaj   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Entity Profiling to Identify Actor Involvement in Topics of Social Media Content

IJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2020
The efficiency of using social media affected modern society's nature and communication; they are more interested in talking through social media than meeting in the real world.
Puji Winar Cahyo, Muhammad Habibi
doaj   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

From Bug to Feature: Harnessing Cross‐Sensitivity for Multiparametric Luminescence Sensing

Advanced Functional Materials, EarlyView.
Cross‐sensitivity in luminescence sensing is reframed from a limitation into a resource for multiparametric detection. Using ruby microspheres as a model system, cross‐sensitivity is quantitatively assessed and exploited through linear discriminant analysis, enabling simultaneous, correction‐free pressure and temperature sensing with a single ...
Nikita Panov, Liyan Ming, Stanislav Sinogeikin, Erving Ximendes, Daniel Jaque, Riccardo Marin   +5 more
wiley   +1 more source

Strategies to enhance the competitiveness of semi-intensive aquaculture systems in costal earth ponds: the organic aquaculture approach

Frontiers in Marine Science, 2014
Earthen ponds are the main production system for European seabass (Dicentrarchus labrax) and gilthead seabream (Sparus aurata) in Portugal and in Southern Spain.
Manuel Sardinha, Sofia Engrola, Paulo Gray   +2 more
doaj   +1 more source

Investigation of the Jahn-Teller Transition in TiF3 using Density Functional Theory

, 2003
We use first principles density functional theory to calculate electronic and magnetic properties of TiF3 using the full potential linearized augmented plane wave method.
A. Briley, A. Mogus-Milankovic, A.B. Shick, A.I. Liechtenstein, A.W. Sandvik, B.J. Kennedy, D.G. Isaak, D.J. Singh, D.V. Porezag, F.D. Murnaghan, H. Sowa, I. Solovyev, I.V. Solovyev, J. Ravez, J.C. Slater, J.P. Perdew, K.A. Jackson, M. Mochizuki, M.R. Pederson, M.R. Pederson, P. Daniel, P. Daniel, P.W. Anderson, Tom Vogt, V.I. Anisimov, V.I. Anisimov, V.I. Anisimov, Vasili Perebeinos, W.E. Pickett, Y.R. Chen   +29 more
core   +1 more source