Results 131 to 140 of about 7,352,836 (227)

H2CD: Semantic‐Enhanced Heterogeneous Hypergraph Network With Large Language Model for Cognitive Diagnosis

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Cognitive diagnosis aims to infer learners' knowledge states from their exercise responses, enabling personalised education at scale. Existing methods represent exercises solely by coarse‐grained knowledge component annotations, overlooking semantic content and step‐level cognitive processes.
Youheng Bai   +4 more
wiley   +1 more source

Stability Modelling and Analysis of an Integrated Wind‐PV‐Storage Power System: A Small‐Signal Approach Using Multi‐Coordinate System Consistency Transformation

open access: yesEnergy Internet, EarlyView.
ABSTRACT With growing energy demand and depletion of fossil fuels, renewable energy development is crucial for achieving dual‐carbon goals. This paper focuses on small‐signal modelling and stability analysis of a grid‐connected wind‐PV‐storage system.
Puyu Wang   +7 more
wiley   +1 more source

Research on Ultra‐Wideband Pulse Current Method for DC Partial Discharge Measurement

open access: yesHigh Voltage, EarlyView.
ABSTRACT The conventional pulse current method is commonly used in AC or DC withstand voltage tests with partial discharge (PD) monitoring. Because of its relatively narrow measurement bandwidth, this method tends to ignore critical information in PD waveforms, making it difficult to eliminate pulse‐type interference under DC voltage conditions, where ...
Kaining Hou   +4 more
wiley   +1 more source

Zero‐Current Switching Based Model Predictive Control of a Double‐Extended Overlapped Alternate Arm Converter Used in the VSC–HVDC System

open access: yesHigh Voltage, EarlyView.
ABSTRACT The alternate arm converter (AAC) is one of the most efficient multilevel topologies based on voltage source converters (VSCs), which has recently gained attention in various applications, particularly in high voltage direct current (HVDC) systems.
Ehsan Akbari, Milad Samady Shadlu
wiley   +1 more source

Amenability of coarse spaces and K -algebras. [PDF]

open access: yesBull Math Sci, 2018
Ara P, Li K, Lledó F, Wu J.
europepmc   +1 more source

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