Results 31 to 40 of about 385,232 (319)
Aerospace, 2023 This paper investigates the effects of two modifications to a vaned recessed casing treatment. First, the shape of a circular curve was used in the top of the treated casing. Second, a fully curved guide vane was also applied.
Mohammad Akhlaghi, Yahya Azizi
doaj +1 more source
The Role of Surge Pricing on a Service Platform with Self-Scheduling Capacity
Manufacturing & Service Operations Management, 2016 Recent platforms, like Uber and Lyft, offer service to consumers via "self-scheduling" providers who decide for themselves how often to work. These platforms may charge consumers prices and pay providers wages that both adjust based on prevailing demand ...
Gérard P. Cachon +2 more
semanticscholar +1 more source
Wind Energy, 2022 Floater motions introduce unsteadiness in the aerodynamics of floating offshore wind turbines. The aerodynamics of a wind turbine after three perturbations are studied: a blade pitch step, a rotor speed step for which dynamic inflow is expected, and a ...
Rémi Corniglion +2 more
doaj +1 more source
Applied Sciences, 2023 With its benefits of efficiency and speed, the orthogonal experimental design method is currently often employed in many domains for multi-factor experimental design.
Shuang Zheng +6 more
doaj +1 more source
Science Advances, 2019 More intense precipitation will increase the flood potential from concurring storm surges and precipitation in the future. In low-lying coastal areas, the co-occurrence of high sea level and precipitation resulting in large runoff may cause compound ...
E. Bevacqua +6 more
semanticscholar +1 more source
Phase-Averaged Dynamics of a Periodically Surging Wind Turbine [PDF]
, 2021 The unsteady power generation of a wind turbine translating in the streamwise direction is relevant to floating offshore wind turbines, kite-mounted airborne wind turbines, and other non-traditional wind-energy systems. To study this problem experimentally, measurements of torque, rotor speed, and power were acquired for a horizontal-axis wind turbine ...
arxiv +1 more source
Decline in Stroke Presentations During COVID-19 Surge
Stroke, 2020 Supplemental Digital Content is available in the text. Background and Purpose: We aimed to investigate the acute stroke presentations during the coronavirus disease 2019 (COVID-19) pandemic.
K. Uchino
semanticscholar +1 more source
Research on Online Diagnosis Method of Fuel Cell Centrifugal Air Compressor Surge Fault
Energies, 2021 Stable operation of fuel cell air compressions is constrained by rotating surge in low flowrate conditions. In this paper, a diagnosis criterion based on wavelet transform to solve the surge fault is proposed. First of all, the Fourier transform was used
Su Zhou, Jie Jin, Yuehua Wei
doaj +1 more source
Surge-Energy and Overvoltage Ruggedness of P-Gate GaN HEMTs
IEEE transactions on power electronics, 2020 An essential ruggedness of power devices is the capability of safely withstanding the surge energy. The surge ruggedness of the GaN high-electron-mobility transistor (HEMT), a power transistor with no or minimal avalanche capability, has not been fully ...
Ruizhe Zhang +4 more
semanticscholar +1 more source
High-resolution spectroscopy of a surge in an emerging flux region [PDF]
A&A 639, A19 (2020), 2020 High-spectral resolution observations using the VTT echelle spectrograph in the chromospheric H$\alpha$ line were obtained in the early growth phase of active region NOAA 12722. Noise-stripped H$\alpha$ line profiles yield maps of line-core and bisector velocities, which were contrasted with velocities inferred from Cloud Model inversions.
arxiv +1 more source