Results 111 to 120 of about 68,410 (300)

A physics-informed frequency security constrained unit commitment

International Journal of Electrical Power & Energy Systems
With the significant growth in renewable energy integration, system inertia has substantially decreased, necessitating the incorporation of frequency security constraints into the conventional unit commitment (UC) problem.
W.Y. Huang, P.Y. Tsai, G.W. Chang
doaj   +1 more source

All‐sky assimilation impacts of the Tomorrow.io microwave sounder constellation on global weather forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette, Ryan Honeyager, Stephen Joseph Munchak, Xiaoxu Tian   +3 more
wiley   +1 more source

Moisture inversions in the central Arctic: Product assessment and long‐wave radiative effect

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study evaluates the integrated water vapour and the vertical distribution of water vapour of state‐of‐the‐art reanalyses, weather forecast models, and ground‐ and space‐based remote‐sensing products in the central Arctic. A particular focus lies on the representation of humidity inversions and the quantification of the long‐wave radiative effect ...
Andreas Walbröl, Susanne Crewell, Carola Barrientos‐Velasco, Giovanni Chellini, Hannes J. Griesche, Janna E. Rückert, Kerstin Ebell   +6 more
wiley   +1 more source

Online Estimation of Disturbance Size and Frequency Nadir Prediction in Renewable Energy Integrated Power Systems

IEEE Transactions on Power Systems
The displacement of conventional synchronous generation by Inverter-Based Resources (IBRs) poses critical challenges to the frequency stability of Renewable Energy (RE) integrated power systems. An increased shift towards green energy by integrating RE sources that provide little or no inertia results in a high Rate of Change of Frequency (RoCoF) and ...
Pal, B, Lekshmi, D, Rather, Z, Pal, B
openaire   +3 more sources

Prognostic Value of a Cardiopulmonary Exercise Testing‐Derived Summed Score in Idiopathic Pulmonary Fibrosis and Connective Tissue Disease‐Associated Interstitial Lung Disease: A Prospective Cohort Study

Respirology, EarlyView.
A cardiopulmonary exercise testing‐derived summed score effectively predicted mortality or lung transplantation risk in newly diagnosed interstitial lung disease. Higher summed scores (2–5) were associated with markedly lower event‐free survival rates.
Yu‐Lin Tsai, Kai‐Ming Chang, Chung‐Shih Chin, Chiann‐Yi Hsu, Yi‐Hsuan Yu, Yuan‐Yang Cheng, Pin‐Kuei Fu   +6 more
wiley   +1 more source

A new perspective on frequency control in conventional and future interconnected power systems

International Journal of Electrical Power & Energy Systems
In the interconnected power systems, the frequency change during disturbances may manifest differently in certain areas in the initial moments after the disturbance. Due to wave propagation, generating units located in distant areas contribute to primary
Tomislav Baškarad, Ninoslav Holjevac, Igor Kuzle   +2 more
doaj   +1 more source

Grid Forming Technologies to Improve Rate of Change in Frequency and Frequency Nadir: Analysis-Based Replicated Load Shedding Events

Electronics
Electric power generation is quickly transitioning toward nontraditional inverter-based resources (IBRs). Prevalent devices today are solar PV, wind generators, and battery energy storage systems (BESS) based on electrochemical packs. These IBRs are interconnected throughout the power system via power electronics inverter bridges, which have ...
Oscar D. Garzon, Alexandre B. Nassif, Matin Rahmatian   +2 more
openaire   +1 more source

OSA Endotyping as Targets for Treatment. How Far Have We Come?

Respirology, EarlyView.
ABSTRACT Obstructive sleep apnoea (OSA) is highly prevalent and is associated with significant impairments in quality of life and comorbidity. The most common treatment employed is continuous positive airway pressure (CPAP), especially in moderate and severe cases.
Walter T. McNicholas, Sara Op de Beeck, Pasquale Tondo, Johan Verbraecken, Maria R. Bonsignore   +4 more
wiley   +1 more source

Software to Support Remote Sensing of River Discharge Based on Critical Flow Theory

River Research and Applications, EarlyView.
ABSTRACT Water resource management requires accurate observations of streamflow but standard field methods for measuring river discharge (Q$$ Q $$) can be costly and hazardous for equipment and personnel. Remote sensing has become a viable alternative, but many image‐based techniques require field data for calibration, and depth and velocity can seldom
Carl J. Legleiter, Inhyeok Bae
wiley   +1 more source

Data handling methods and target detection results for multibeam and sidescan data collected as part of the search for SwissAir Flight 111 [PDF]

, 1999
The crash of SwissAir Flight 111, off Nova Scotia in September 1998, triggered one of the largest seabed search surveys in Canadian history. The primary search tools used were sidescan sonars (both conventional and focussed types) and multibeam sonars ...
Bradford, Jim, Hughes Clarke, John E., Lamplugh, Mike, Mayer, Larry A., Parrott, R, Shaw, John   +5 more
core   +1 more source