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Earlier sources: Energy
Energy research and engineering concern how power is produced, stored, delivered, and consumed. Follow solar and nuclear power, fusion, geothermal systems, batteries, electricity grids, and changing power demand.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗658 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- arXiv · Published · First archived
Distributed laser energy deposition enables fog-resilient optical communications ↗
Fog and clouds remain major obstacles to free-space optical (FSO) communications because micron-sized droplets can impose tens of decibels of attenuation. Ultrashort laser filamentation can transiently clear fog in laboratory-scale experiments, but its extension to atmospheric-scale propagation has remained uncertain. Here we demonstrate laser-assisted fog clearing under atmospheric-scale propagation conditions over a 140-m optical path using a high-energy, high-average-power picosecond laser and weak focusing to sustain extended multifilamentation. A steady-state transparent channel approxima…
- Hacker News · Posted on Hacker News · First archived
Oracle on the hook to pay data centre investors even if site has no electricity ↗
Hacker News discussion.
- Hacker News · Posted on Hacker News · First archived
Unexplained objects in 1950s sky correlate with nuclear tests and UAP reports ↗
Hacker News discussion.
- OpenAlex · Published · First archived
MF-YOLO: High-Resolution Weighted Feature Fusion with Global-Local Aggregation for Small-Object Detection in UAV Imagery ↗
Small-object representations in unmanned aerial vehicle (UAV) imagery are easily degraded by repeated downsampling, crowded occlusion, and background clutter. We present MF-YOLO, an accuracy-oriented detector based on YOLO11n. It introduces a stride-4 P2 prediction scale, applies Global-to-Local Spatial Aggregation (GLSA) independently to C2–C5 before neck fusion, and connects P2–P5 through a 64-channel Bidirectional Feature Pyramid Network (BiFPN). The contribution lies in the task-specific organization and controlled evaluation of these established components. Across three random seeds, MF-Y…
- OpenAlex · Published · First archived
Hydrodynamics of turbulent coolant flow at the outlet of the fuel assembly of the RITM reactor for a small nuclear power plant ↗
The paper presents the results of an experimental study and comparative analysis of coolant hydrodynamics at the outlet of a fuel assembly (FA) with upper nozzles of three different designs. The FAs are intended for the core of the RITM reactor of a small nuclear power plant (SNPP). The aim of the work was to study the axial flow velocity at the outlet of the fuel rod bundle and behind the upper nozzles of different designs, as well as to identify regions of the fuel rod bundle from which flow could enter the sampling tube leading to a resistance thermometer (RTD). The experiments were conduct…
- OpenAlex · Published · First archived
Multi-objective optimization of plate-fin latent thermal energy storage for airborne high-power laser thermal buffering under mass and volume constraints ↗
Airborne high-power laser systems subjected to periodic thermal loads require compact thermal buffers with high storage capacity and rapid transient response under stringent mass and volume constraints. This study develops a surrogate-assisted multi-objective optimization framework for a plate-fin latent thermal energy storage (LTES) device using condensing NH 3 as the heat-transfer fluid, with emphasis on cold-discharge performance. A two-dimensional transient distributed-parameter model was established to resolve coupled HTF condensation, plate-fin conduction, and PCM melting, and was integr…
- OpenAlex · Published · First archived
Energy and exergy analysis of a photovoltaic thermal thermoelectric system integrated with an earth air duct for building applications ↗
Buildings account for a considerable share of global energy consumption, mainly due to heating, cooling, and electricity demands, which highlights the need for efficient renewable energy technologies. Although photovoltaic/thermal–thermoelectric generator (HPVTE) systems and earth–air ducts (EADs) have individually demonstrated promising performance, their integrated application for simultaneous space heating, cooling, and electrification has not yet been comprehensively investigated. To the best of the authors’ knowledge, this study provides the first systematic thermodynamic parametric asses…
- OpenAlex · Published · First archived
Explainable Reliability-Gated EEG–EMG Fusion for Offline Early Gesture and Intention Recognition with Potential Relevance to Human–Robot Collaboration ↗
Abstract Early gesture and intention recognition from biosignals may provide a useful perception capability for future human–robot collaboration systems. This study proposes and evaluates an explainable reliability-gated EEG–EMG fusion framework for offline classification of seven upper-limb hand gestures and associated instructed intentions. The framework uses modality-specific EEG and EMG encoders followed by an adaptive reliability gate that learns how much each biosignal modality should contribute to the final prediction. The model was evaluated on synchronized EEG–EMG upper-limb gesture d…
- OpenAlex · Published · First archived
Fuzzy Reverse Neighborhood Discriminant Analysis: Soft Memberships, Adaptive Graphs, and Choquet-Integral Fusion for Robust Feature Extraction ↗
Conventional linear discriminant analysis (LDA) and its graph-based extensions encounter challenges with class overlap, uneven sampling, and inflexible neighborhood selection. Although reverse nearest neighbor (RNN) graphs address data density, standard Reverse Neighborhood Discriminant Analysis (RNDA) relies on hard labels and binary edges. This work introduces Fuzzy Reverse Neighborhood Discriminant Analysis (FRNDA), which incorporates fuzzy class memberships, multiple fuzzy RNN graphs with smoothly decaying edge weights, and Choquet integral-based regularization to model non-additive intera…
- OpenAlex · Published · First archived
Shunt-current-aware dynamic simulation of hundreds-kilowatt scale vanadium flow battery modules under constant power operation mode ↗
The scale-up of vanadium flow batteries (VFBs) from single-stack system to multi-stack modules introduces complex electrolyte pipeline networks, where variations in pipeline configuration and length can induce non-uniform shunt currents through ionic conduction in the electrolyte. These shunt currents cause capacity loss and efficiency degradation, limiting the practical application of VFBs in large-scale energy storage systems. In this work, a dynamic model of hundred-kilowatt-level VFB module is developed and coupled with shunt current model, which enables effective time-dependent evaluation…
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How to assess evidence about Energy
Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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