Results 51 to 60 of about 23,244 (255)

Research on a monitoring point distribution method for wide-frequency oscillations in new power systems

Zhejiang dianli
Wide-frequency measurement devices can monitor wide-frequency oscillations in the power grid in real time. However， during practical engineering deployment， there is a lack of targeted guidance methods， making it difficult to comprehensively monitor ...
FAN Chen, REN Hao, LI Yudun, LIANG Zhengtang, YAO Zhiqiang, DOU Renhui   +5 more
doaj   +1 more source

Medium-Range Predictability of Boreal Summer Western North Pacific Subtropical High and Its ENSO Modulation

Frontiers in Earth Science, 2022
In boreal summer, variations of intensity and location of the western North Pacific subtropical high (WNPSH) have significant impacts on weather and climate in East Asia.
Li Gao, Pengfei Ren, Jiawen Zheng
doaj   +1 more source

Boundary‐Dependent Sleep–Wake Dysregulation in Idiopathic Hypersomnia

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Samantha Mombelli, Karine Lacourse, Hélène Blais, Anne‐Sophie Deshaies‐Rugama, Cynthia Thompson, Alex Desautels, Jacques Montplaisir, Milan Nigam, Christophe Moderie, Boshra Khajehpiri, Catherine Duclos, Jean Marc Lina, Julie Carrier, Nadia Gosselin   +13 more
wiley   +1 more source

Variations in atmospheric dust loading since AD 1951 recorded in an ice core from the northern Tibetan Plateau

Annals of Glaciology, 2016
An ice core was extracted from the Zangser Kangri (ZK) ice field in the northern Tibetan Plateau (NTP), a location with limited instrumental and proxy records. In this paper, we present a continuous high–resolution dust concentration time series spanning
Wangbin Zhang, Shugui Hou, Wenling An, Liya Zhou, Hongxi Pang   +4 more
doaj   +1 more source

Sea-ice-related halogen enrichment at Law Dome, coastal East Antarctica [PDF]

Climate of the Past, 2017
The Law Dome site is ideal for the evaluation of sea ice proxies due to its location near to the Antarctic coast, regular and high accumulation throughout the year, an absence of surface melting or remobilization, and minimal multiyear sea ice.
P. Vallelonga, N. Maffezzoli, A. D. Moy, M. A. J. Curran, T. R. Vance, R. Edwards, G. Hughes, E. Barker, G. Spreen, A. Saiz-Lopez, J. P. Corella, C. A. Cuevas, A. Spolaor   +12 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Sparse Variational Bayesian Inference for Water Pipeline Systems With Parameter Uncertainties

IEEE Access, 2018
In this paper, multi-leak identification based on a transient wave model with physical parameter uncertainties for smart water supply systems is studied.
Bingpeng Zhou, An Liu, Vincent K. N. Lau
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

Power Oscillation Source Location Based on the Combination of Energy Function and Normal Distribution in a Fully Data-Driven Approach

Energies
With the deepening of national efforts toward green energy transformation, the power system is evolving into one characterized by “double high”—a high proportion of new energy integration and a high level of power electronic systems.
Shujia Guo, Xu Liu, Chao Jiang, Jing Cong   +3 more
doaj   +1 more source