Results 81 to 90 of about 16,769 (309)

Interpreting a Legacy Fossil Assemblage Excavated From Waribruk (New Guinea II Cave), GunaiKurnai Aboriginal Country, Snowy River National Park, Southeastern Australia

Archaeology in Oceania, EarlyView.
ABSTRACT In this paper we report on faunal remains recovered from a legacy archaeological excavation undertaken in the rockshelter entrance of Waribruk (New Guinea II Cave), a GunaiKurnai site located on the west bank of the Snowy River, East Gippsland, southeastern Australia.
Matthew C. McDowell, Bruno David, Jean‐Jacques Delannoy, Russell Mullett, Fiona Petchey, Helen Green, Joanna Fresløv, GunaiKurnai Land and Waters Aboriginal Corporation   +7 more
wiley   +1 more source

Fine Particulate Matter Constituents, Ozone, and Systemic Lupus Erythematosus: A Large General‐Population Cohort Analysis With Extended Quantile g‐Computation

Arthritis &Rheumatology, EarlyView.
Objective The aim of this study was to investigate whether exposure to mixture of individual fine particulate matter (PM2.5) chemical constituents is associated with incident systemic lupus erythematosus (SLE) and if ozone modifies this association and/or is associated with SLE onset.
Naizhuo Zhao, Sasha Bernatsky, Sharon Dowell, Brittany Banbury, Jeffrey R. Curtis, Grace C. Wright, Emily E. Holladay, Amy Mudano, Cristiano S. Moura, Gail S. Kerr   +9 more
wiley   +1 more source

Two-channel microwave power switch construction on the basis of electrically active semiconductor structures

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014
When constructing the fast-acting two-channel microwave switch, it is difficult to use p–i–n-diodes due to inertia of processes in such structures at change of control voltage polarity for providing of deep modulation.
Yu. N. Lavrich, S. V. Plaksin, V. Ya. Kris, L. M. Pogorelaya, I. I. Sokolovskiy   +4 more
doaj   +1 more source

Sleep‐trackers in the wild: A faceted taxonomy for information and interaction design

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Consumer‐grade sleep‐tracking technologies (CSTs) have brought sleep into everyday data practices, reframing it from a clinical concern into a site of personal optimization and reflection. Yet existing taxonomies of sleep‐tracking often medicalize users and overlook the complexity of sleep‐tracking technologies. This paper presents SleepTax, a
Sanonda Datta Gupta, Jaime Snyder, John S. Seberger   +2 more
wiley   +1 more source

Research on Commutation Failure in Multi-feed HVDC Transmission System

发电技术, 2020
HVDC transmission systems present a risk of commutation failure. For multi-infeed HVDC transmission systems, due to the interaction between AC and DC systems, the commutation failure of a single inverter station may cause multiple inverter stations to ...
Jiaming WANG, Hao YU, Wuhui CHEN
doaj   +1 more source

Young children's right to be heard on the quality of their education: Addressing potential misunderstandings in the context of early childhood education

British Educational Research Journal, EarlyView.
Abstract In early childhood education many researchers and professionals across the world have embraced the United Nations Convention on the Rights of the Child's requirement to include young children in decision‐making. In the context of ongoing discussion about young children's capacity to share their views and opinions about matters affecting them ...
Laura Lundy, Colette Murray, Kylie Smith, Carmel Ward   +3 more
wiley   +1 more source

Harmonic analysis of AC-bus voltage in converter station based on time–frequency transformation

The Journal of Engineering, 2018
The disturbance of the AC system has become one of the main causes of commutation failure in the high voltage direct current (HVDC) transmission system. Here, the time–frequency transformation method is used to analyse the AC-bus voltage disturbance from
Zhao Dandan, Huang Hua, Liu Junhua, Zhao Wenbin, Jin Heng, Zhang Jiamin, Huang Huawei   +6 more
doaj   +1 more source

Of Commutators and Jacobians [PDF]

, 2021
I discuss the prescribed Jacobian equation $Ju=\det\nabla u=f$ for an unknown vector-function $u$, and the connection of this problem to the boundedness of commutators of multiplication operators with singular integrals in general, and with the Beurling operator in particular. A conjecture of T. Iwaniec regarding the solvability for general datum $f\in
openaire   +3 more sources

Making teaching an attractive profession: What are the challenges and opportunities for minority ethnic teachers in England?

British Educational Research Journal, EarlyView.
Abstract This paper explores the challenges and opportunities surrounding the recruitment and retention of minority ethnic teachers in England. Drawing on interview data from 33 teachers and school leaders of diverse ethnic backgrounds, it investigates whether racialised barriers identified in earlier research have shifted in the current context of ...
Antonina Tereshchenko, Feyisa Demie, Stephen Gorard, Yiyang Gao, Beng Huat See, Nadia Siddiqui   +5 more
wiley   +1 more source

Study on Varying-Step Commutation Strategy of Matrix Converter

, 2011
Aiming at safe commutation and improving quality of output waveform, the paper presents a new varying-step safe commutation strategy of matrix converter by analyzing the character of traditional four-step commutation and improved four-step commutation ...
Jun Ying Zhao, Xing He Ma, Li Jia, Peng Fei Ji   +3 more
core   +1 more source