Results 51 to 60 of about 15,904,812 (239)

Choice experiments on land managers' participation in environmental programs: A systematic review and meta‐analysis of estimate validity

American Journal of Agricultural Economics, EarlyView.
Abstract Discrete choice experiments are increasingly being used to estimate land managers' willingness to accept participation in incentive‐based environmental programs. This is a specific application of discrete choice experiments: the estimation of willingness to accept for a private good (program participation) where respondents have to make trade ...
Anastasio J. Villanueva, Angel Perni, Jesus Barreiro‐Hurle   +2 more
wiley   +1 more source

Study on fault ride-through control of islanded wind farm connected to VSC-HVDC grid based on the VSC converter AC-side bus forced short circuit

The Journal of Engineering, 2019
Wind farms integrated to an AC power system through a voltage source converter-based high-voltage direct current system (VSC-HVDC) are viewed as islanded wind farms. The wind farm side converter of VSC-HVDC maintains a constant frequency of the wind farm
Yan Li, Chao Liu, Xinshou Tian, Zhibing Wang   +3 more
doaj   +1 more source

Augmentation of DFIG and PMSG Wind Turbines Transient Performance Using Different Fault Current Limiters

Energies, 2022
The technology of variable speed wind turbines is very promising in renewable power generation. It is imperative for wind turbines to gain control after grid disturbances and contribute to the stability of power grids as part of the requirements of grid ...
Kenneth E. Okedu
doaj   +1 more source

High Rate of Return to Sport in Competitive Athletes Undergoing Periacetabular Osteotomy With Concomitant Hip Arthroscopy

Arthroscopy, EarlyView.
Purpose To report the return‐to‐sport rate of competitive athletes with hip dysplasia, in relation to their preoperative level of competition, who underwent hip arthroscopy with concomitant periacetabular osteotomy (HA + PAO). Methods Patients participating in competitive sports who underwent HA + PAO for the correction of hip dysplasia between January
Alfred Mansour, Nicole Lemaster, Jacob Jelmini, Philip Sheedy, Anota Adekunle, Alexis Aboulafia   +5 more
wiley   +1 more source

Vehicle Suspension Performance Analysis Based on Full Vehicle Model for Condition Monitoring Development [PDF]

The objective of this research is to develop a mathematical model using a seven degree-of-freedom full car. The simulation analyses were conducted to predict the response of the vehicle when driven across speed bumps of different shapes and at range of ...
Moamar, Hamed, Ball, Andrew, Fengshou, Gu, Tesfa, Belachew   +3 more
core   +3 more sources

A lightweight MMC topology with recombined half‐bridge submodules for DC fault ride‐through

IET Generation, Transmission & Distribution
The lightweight of modular multilevel converter (MMC) and the DC faults ride‐through ability are main challenges for MMC‐high voltage direct current (HVDC) transmission systems.
Yutao Xu, Zhukui Tan, Jikai Li, Qihui Feng, Zhuang Wu   +4 more
doaj   +1 more source

Dynamic active torque coordination strategy for torsional vibration suppression in wind turbines during grid fault recovery

International Journal of Electrical Power & Energy Systems
When the grid fault occurs, wind turbines are required to possess fault ride-through (FRT) capability and rapidly restore active power after fault clearance.
Cai Guang, Yan Xiangwu, Zhang Shurui, Ren Haoyang, Jia Jiaoxin, Zhou Fan   +5 more
doaj   +1 more source

Conceptualizing algorithmic inequality and future agenda. An annual review of information science and technology (ARIST) paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract The issue of inequality caused by algorithms, termed ‘algorithmic inequality’, has recently attracted scholarly attention in many disciplines due to its profound implications for society. While the body of literature on algorithmic inequality has grown, there remains a lack of comprehensive understanding of its nature, drivers, and impact ...
Shiwei Jia, Jia Tina Du, Hui Yan
wiley   +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

A novel FRT strategy for transformerless MMC to improve current differential protection performance under single-phase grounding faults

International Journal of Electrical Power & Energy Systems
AC/DC distribution networks are interconnected by converters such as modular multilevel converters (MMCs). In AC/DC distribution networks, single-phase grounding (SPG) faults can cause enormous challenges in relay protection.
Yuze Li, Peng Guo, Qianming Xu, Josep M. Guerrero   +3 more
doaj   +1 more source