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Related Articles from SNS
Unstable Poles Arising in AC Power Grid Subsystem Representations
new Abstract: Recent small-signal stability studies of AC grids have shifted towards analysing power systems as interconnections of subsystems and leveraging their input-output properties to derive scalable stability certificates. Two subsystem representations appear frequently in the literature: the PQ model, coupling powers to phase angle and voltage magnitude, and the IV model, coupling currents to voltages. In this paper, we derive both models without simplifying the bus or line dynamics...
Physics-Informed Graph Learning Acceleration for Large-Scale AC-OPF with Topology Changes
arXiv:2606.05772v1 Announce Type: new Abstract: In power systems, alternating current optimal power flow (AC-OPF) has been a challenging problem for decades due to its nonconvexity, but fast and efficient solutions are even more needed because of high penetration of large scale renewable generation and load growth. Recently, neural networks (NN) have gained attention in solving AC-OPF, but it is still in an early stage to be applicable for real and large-scale power system operation with...
SABLE: GPU-Based Power Flow Accelerator for Sparsity-Aware Batched Learning
arXiv:2606.07099v1 Announce Type: new Abstract: Recent studies have developed GPU-based approaches for solving AC power flow and successfully applied them to standalone power flow problems. However, integrating these approaches into modern differentiable learning frameworks while preserving sparsity remains challenging. To this end, we present SABLE, a GPU-based sparse batched power flow accelerator for differentiable learning via an implicit power flow layer.
As ACs run nonstop in 45°C heat, are Delhi homes facing a growing fire hazard?
As temperatures across Delhi-NCR climb past 45 degrees Celsius, air-conditioners are now running almost constantly in homes, apartments and residential societies. In this extreme heat, another problem is quietly showing up inside these spaces: The risk of AC-related fires. What usually begins as a basic attempt to beat the summer heat can sometimes spiral into something far more dangerous.
From Messi to Ronaldo, 13 legends who could play their final FIFA World Cup
The 2026 FIFA World Cup is expected to deliver plenty of firsts. It will be the largest tournament in history, featuring 48 teams and taking place across the United States, Canada and Mexico. Yet beyond the expanded format and the promise of new stories, the competition could also mark the end of an era.
SpeakerCard-1M: An Evidence-Grounded Speaker Card Corpus for In-the-Wild Speaker Verification
Announce Type: replace-cross Abstract: Modern speaker verification (SV) systems rely on speaker embeddings that are effective but difficult to interpret or query in natural language. Most existing speech-text corpora target controllable synthesis or utterance-level captioning, and provide limited speaker-level supervision for in-the-wild speaker recognition. This paper introduces SpeakerCard-1M, a bilingual speaker-centric resource for evidence-grounded SV, derived from VoxCeleb1/2 and...
SpeakerCard-1M: An Evidence-Grounded Speaker Card Corpus for In-the-Wild Speaker Verification
arXiv:2606.03283v1 Announce Type: cross Abstract: Modern speaker verification (SV) systems rely on speaker embeddings that are effective but difficult to interpret or query in natural language. Most existing speech-text corpora target controllable synthesis or utterance-level captioning, and provide limited speaker-level supervision for in-the-wild speaker recognition. This paper introduces SpeakerCard-1M, a bilingual speaker-centric resource for evidence-grounded SV, derived from...
A new capability to detect chemical weapons involves two existing methods
A new capability to detect chemical weapons involves two existing methods Stephanie Baum Scientific Editor Robert Egan Associate Editor In the aftermath of suspected chemical attacks, investigators from the Organization for the Prohibition of Chemical Weapons (OPCW) step in to collect chemical, environmental, and biomedical samples. Thorough forensic laboratory analysis of these samples is essential for proving what—if any—chemical agents were used and verifying their identities. Researchers...
TT-DAC-PS: Twin-Target Deterministic Actor-Critic with Policy Smoothing for Optimal Trade Execution
arXiv:2606.08379v1 Announce Type: new Abstract: This study addresses the optimal execution of large stock sell programs by introducing TT-DAC-PS (Twin-Target Deterministic Actor-Critic with Policy Smoothing), a deterministic actor-critic architecture that combines twin exponential-moving-average critic targets with pessimistic min backup, TD3-style target policy smoothing noise, delayed actor updates, and conservative Q regularisation to curb overestimation. Exploration uses...
USMNT star Christian Pulisic finally ends lengthy goal drought in win over Senegal
Christian Pulisic is considered to be one of the best American-born soccer players in the world and is expected to be a major part of the U.S. national team’s run in the upcoming World Cup. It’s why the goal drought going into a friendly against Senegal was absolutely bizarre. Pulisic hadn’t put one into the back of the net since Dec. 28 when AC Milan defeated Hellas Verona in a Serie A match.