Results 21 to 30 of about 2,111,098 (215)

Coordinated power control of electrochemical energy storage for mitigating subsequent commutation failures of HVDC

International Journal of Electrical Power & Energy Systems, 2022
Abstract Commutation failure is one of the most common faults in high voltage direct current (HVDC) transmission system. Subsequent commutation failures (SCFs) caused by commutation failure will cause large voltage and current swing. Several SCFs may cause DC transmission power interruption, which seriously threatens the safe and stable operation of ...
Hongyu Zhou, Wei Yao, Xiaomeng Ai, Jing Zhang, Jinyu Wen, Chenghao Li   +5 more
openaire   +1 more source

Farm labor scarcity and its uneven impacts on crop producers in the United States

American Journal of Agricultural Economics, EarlyView.
Abstract This study is the first to evaluate the impacts of farm labor scarcity on producers in the United States across different crop production systems. Between 2002 and 2017, we disentangle the effects of labor scarcity from the impacts of rising commodity demand, technological change, and supply of other inputs on labor market outcomes.
Srabashi Ray, Alexandra E. Hill, Iman Haqiqi, J. Edward Taylor, Thomas W. Hertel   +4 more
wiley   +1 more source

NO NĀ PUA: Exploring the feasibility of culture‐based social prescribing on firefighters' wellbeing in Hawaiʻi

American Journal of Community Psychology, EarlyView.
Abstract Firefighters face an array of stressors due to the demands of their occupation, leading to a high prevalence of mental health challenges. Social prescribing represents a novel approach to healthcare that emphasizes a holistic view of health and wellbeing.
Janice Ikeda, Margary Martin, Misty Pacheco   +2 more
wiley   +1 more source

Procedure analysis of UHVDC commutation failure

, 2019
There may be a commutation failure during a fault or start-up of the UHVDC inverter side. The law of commutation failure process in UHVDC converter is studied here. First, the cause of inverter commutation failures is briefly introduced.
Chi Zhang, Peng Li, Xiangping Kong, Yubo Yuan, Chenqing Wang   +4 more
core   +1 more source

Predictive Commutation Failure Suppression Strategy for High Voltage Direct Current System Considering Harmonic Components of Commutation Voltage

, 2022
The commutation failure of high voltage direct current (HVDC) systems could lead to unstable operation of the alternating current/direct current (AC/DC) hybrid power grid.
Zeyu Cao, Xiaolin Liu, Feng Zhang, Bingtuan Gao, Zhuan Zhou, Xingang Wang   +5 more
core   +1 more source

Powerful transformations: The experiences of higher education teaching staff who were first‐generation university students

British Educational Research Journal, EarlyView.
Abstract Historically, a university education has been seen primarily as a route for the middle classes to achieve professional qualifications while structural barriers have served to restrict entry to individuals from particular demographics. First‐generation students (FGS), often with low socio‐economic backgrounds, face multiple barriers to Higher ...
Helen Williams, Ellen‐Alyssa Gambles
wiley   +1 more source

Research on transient AC overvoltage suppression method of DC sending end based on novel fast-excitation MCR

International Journal of Electrical Power & Energy Systems
The growing reliance on high-power high-voltage direct current (HVDC) transmission systems has intensified challenges associated with transient AC overvoltage induced by commutation failures resulting from converter operation characteristics.
Xiyu Yin, Xiaoyue Chen, Linyu Zhang, Shan Li, Yujie Ding, Rui Song, Chunlai Li   +6 more
doaj   +1 more source

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

Biological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón, José A. Sánchez‐Zapata, Travis L. DeVault, Wayne M. Getz, Zebensui Morales‐Reyes, Daniel Redondo‐Gómez, Lara Naves‐Alegre, Solange A. Batista‐Nunes, Esther Sebastián‐González, Juan M. Pérez‐García, Kelly A. Waters, Thijs van Overveld, Craig Smith, Nuria Selva, Thomas A. Schlacher, Graeme Ruxton, Jesús Rodríguez, Martina‐M. Quaggiotto, Paula L. Perrig, Norman Owen‐Smith, Thomas M. Newsome, Isabel Navas, Yoshihiro Nakashima, Ana Mateos, Carlos Martínez‐Carrasco, Daniel Martín‐Vega, Berta Martín‐López, Antoni Margalida, Sergio A. Lambertucci, Adam Kane, Kevin Healy, Akane Hashizume, Antonio J. García‐Fernández, José A. Donázar, M. Eric Benbow, James C. Beasley, Philip S. Barton, Kathleen A. Alexander, Eneko Arrondo   +38 more
wiley   +1 more source

What Do We Know About Scope 3 Emissions in Small‐ and Medium‐Sized Enterprises? Mapping Current Knowledge and Advancing a Theory–Practice‐Oriented Framework

Business Strategy and the Environment, EarlyView.
ABSTRACT Although SMEs comprise over 90% of firms globally, research on their engagement with Scope 3 (value‐chain) greenhouse gas emissions remains limited. This PRISMA‐guided systematic review synthesises 49 SME‐relevant studies to develop a theory‐informed, practice‐oriented framework for more credible and sustained Scope 3 engagement.
Chidinma Uchendu, Okechukwu Okorie, Fatemeh Khosravi, Stuart Connop, Hebba Haddad, Mike Medas   +5 more
wiley   +1 more source

Managers' Values and the Adoption of Environmentally Sustainable Practices Among Small and Medium‐Sized Enterprises: A Configurational Approach

Business Strategy and the Environment, EarlyView.
ABSTRACT Small and medium‐sized enterprises (SMEs) play a critical role in sustainability transitions, yet the mechanisms through which managers' values shape environmentally sustainable practices (ESP) remain insufficiently understood. Existing research often treats managerial values as independent predictors and pays limited attention to their ...
Marie Romuald Bernard Pouka Pouka, François Labelle, François L'Écuyer   +2 more
wiley   +1 more source