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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 ↗692 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.
- OpenAlex · Published · First archived
Performance analysis of solar powered vapour absorption refrigeration system with cold thermal energy storage for sub-zero cooling application ↗
Abstract This research evaluates the performance of a solar-powered ammonia-water vapor absorption refrigeration system (SVARS) with cold thermal energy storage (CTES), designed to provide continuous sub-zero cooling while offering an eco-friendly, sustainable refrigeration solution that mitigates ecological concerns by avoiding the emission of climate damaging gases. It employs a 144 m 2 area of evacuated tube solar collectors with compound parabolic concentrating (CPC-ETC) capable of supplying thermal energy at a temperature ranging from 140 to 166 °C to operate the SVARS. The refrigeration…
- OpenAlex · Published · First archived
Lead-free piezoelectric energy harvesting using Potassium Sodium Niobate (KNN) thin film based cantilevers ↗
In the present study, a comprehensive evaluation of the piezoelectric energy harvesting capability of cantilever devices has been carried out using lead-free Potassium Sodium Niobate (KNN) thin films deposited via Radio-Frequency (RF) magnetron sputtering. The fabricated device configuration comprises interdigitated gold electrodes patterned onto the surface of KNN thin film integrated onto a Silicon dioxide/Silicon (SiO 2 /Si) substrate. Finite-element modelling studies are also carried out using COMSOL Multiphysics to estimate its fundamental resonant frequency, which was predicted to be 4.6…
- OpenAlex · Published · First archived
Scenario based stochastic programming for aggregate electricity demand scheduling using Moroccan smart meter data ↗
Abstract Electricity retailers and load aggregators must schedule energy before actual demand is known. This study develops a data-to-decision framework for an experimental aggregate demand portfolio constructed from high-resolution smart-meter measurements for Laayoune, Boujdour, Foum El Oued, and Marrakech, Morocco. Seventeen city-zone series are converted to a common unit, aggregated into four city-level series, and aligned on common 30-minute timestamps. Persistence, seasonal-naive, and Random Forest forecasts are compared using chronological training and validation periods, with a held-ou…
- OpenAlex · Published · First archived
Battery-free, fully wireless neurostimulation via radiative RF power transfer in freely behaving mice ↗
Abstract Wireless neurostimulators are essential for investigating causal relationships between neural circuit activity and behavior in freely behaving animals. However, most existing systems rely on onboard batteries, while near-field magnetic wireless power transfer (WPT) requires specialized environments such as large transmission coils. Radiative radio-frequency (RF) WPT enables longer transmission distances but has been considered unsuitable for freely moving conditions due to alignment sensitivity and output instability. Here, we present a battery-free, fully wireless transcranial direct…
- OpenAlex · Published · First archived
Thermochemical Energy Storage Technologies Integrated with Coal-Fired Power Plants ↗
With the global energy transition and the increasing use of renewable energy, coal-fired power plants are shifting from baseload generation toward flexible operation for load following and frequency regulation. However, low-load operation can destabilize boiler combustion, accelerate equipment wear, and complicate emissions control. Thermochemical energy storage offers high storage density, low heat loss during storage, and a wide operating temperature range. It may therefore support the flexible operation of coal-fired power plants. This narrative review compares six thermochemical energy sto…
- OpenAlex · Published · First archived
Energy-Efficient Architectural Design Integrating Renewable Energy for Community Resilience in the Peruvian Amazon ↗
Buildings in climate-vulnerable regions face critical challenges in reducing energy demand while supporting environmental and social resilience. In the Peruvian Amazon, off-grid riverine communities experience energy insecurity and seasonal flooding, threatening both the built environment and cultural continuity. This research presents a non-built architectural case study for an Indigenous community-based ecotourism lodge in Loreto, Peru. The methodology combines culturally informed passive bioclimatic strategies with design-stage quantitative calculations based on secondary sources, architect…
- OpenAlex · Published · First archived
Auditing Multimodal Fusion Benchmarks: Leakage, Attribution, and Calibration in Elderly Fall Detection ↗
Reported gains from multimodal fusion, feature-attribution explanations, and model-confidence scores are only as trustworthy as the evaluation protocol and preprocessing pipeline behind them, yet these are rarely audited together. We develop a benchmarking-and-auditing methodology addressing four failure points jointly, subject-overlapping evaluation, class-imbalance correction under a subject-wise split, feature attribution, and calibration, instantiated on seven models under leave-one-subject-out (LOSO) cross-validation spanning three encoder-backbone pairings and early, late, and hybrid fus…
- OpenAlex · Published · First archived
Temperature-Dependent Interface-Mediated Deformation and Kinetic-Energy Redistribution in FeNiCrCo-Coated Aluminum ↗
Molecular dynamics simulations were performed to examine the temperature-dependent nanoindentation response of aluminum substrates coated with amorphous or crystalline equiatomic FeNiCrCo layers. The study extends our previous 300 K baseline analysis of the same model system by comparing deformation at 300 and 600 K and by examining the spatial redistribution of local kinetic energy and local nonequilibrium kinetic-temperature indicators during loading and unloading. A spherical virtual indenter with a radius of 30 Å was driven to maximum penetration depths of 35 and 65 Å, representing predomi…
- OpenAlex · Published · First archived
A Refined Unit Commitment Model for Physical Energy Storage Incorporating Startup and Shutdown Curves ↗
The increasing penetration of variable renewable energy sources necessitates flexible regulation resources, among which physical energy storage (PES) plays an indispensable role. However, unlike electrochemical storage, PES relies on rotating machinery with mechanical inertia, which imposes inherent limitations on instantaneous state transitions. Conventional unit commitment (UC) models typically idealize the startup and shutdown curves (SSCs) of PES as instantaneous events, leading to schedules that are physically infeasible. To address this gap, this paper proposes a refined UC model that ex…
- OpenAlex · Published · First archived
Peak Power Prediction of Lithium-Ion Battery Considering Long Discharge Time for Trains Under Emergency Traction ↗
When an electric multiple unit (EMU) loses catenary supply, the on-board energy-storage system must simultaneously sustain auxiliary loads and provide sufficient traction power for the train to reach a safe stopping location. In this situation, the available battery power is not constant over a long discharge interval because the state of charge (SOC), terminal voltage, and equivalent-circuit parameters evolve continuously. This study develops a long-horizon state-of-power (SOP) prediction framework for emergency traction. An emergency power-flow model first links battery power to traction-mot…
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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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