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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.

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745 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.

  1. OpenAlex · Published · First archived

    Computational Analysis of Secrecy Outage in Energy-Harvesting Multi-Backscatter IoT Networks ↗

    This paper studies the secrecy outage performance (SOP) of an energy-harvesting multi-backscatter-device (BD) network in the presence of a passive eavesdropper. A dedicated radio-frequency source illuminates multiple BDs employing power splitting (PS), and the BD with the strongest source-to-BD channel is opportunistically selected for confidential backscatter transmission. Unlike conventional secure backscatter communication models that assume an always-active BD, we explicitly impose a practical circuit-activation constraint requiring the selected BD to harvest sufficient energy before trans…

  2. OpenAlex · Published · First archived

    Energy intensity trends in the U.S. transportation network: Policy-driven efficiency gains and the persistence of energy consumption (1960–2025) ↗

    Background The U.S. transportation sector exists at the intersection of global energy markets and federal regulatory frameworks. Understanding the long-term relationship between economic volatility and policy-driven efficiency is critical for navigating the transition to a low-carbon economy. Objective This paper examines the 64-year evolution of transportation energy consumption across highway, air, rail, water, and pipeline sectors. It specifically analyzes how economic shocks such as oil price spikes and recessions interact with policy shifts like CAFE standards and maritime fuel regulation…

  3. OpenAlex · Published · First archived

    Stability Assessment and Damping Control for Grid-Forming Wind-Storage Systems with DC-Side Coupling Dynamics ↗

    This work develops a grid-forming control framework integrated with supplementary energy storage, so that permanent-magnet direct-drive wind turbines can deliver primary frequency regulation and inertial support services. Current stability research commonly concentrates on turbine-grid interactions, yet overlooks coupling dynamics at the DC-link, which motivates this study to establish a quantitative stability evaluation approach for grid-forming wind-storage systems with DC-side coupling taken into consideration. Small-signal impedance representations are firstly constructed for the machine-s…

  4. OpenAlex · Published · First archived

    A Study on Lithium-Ion Battery Health Estimation and Remaining Life Prediction Based on Real-World Operational Data ↗

    Lithium-ion batteries are the primary power source for new energy equipment, such as electrochemical energy storage systems and electric vehicles. Accurate state of health (SOH) estimation and remaining useful life (RUL) prediction are essential for ensuring safe operation and reducing lifecycle operation and maintenance costs. Since existing studies are largely based on ideal laboratory data, the proposed algorithms often exhibit limited generalizability and engineering implementation difficulties in real-world scenarios. To address this gap, this paper provides a comprehensive review of the…

  5. OpenAlex · Published · First archived

    Investigation on organic Rankine cycle technology for utilizing low-temperature waste heat sources from fusion reactors ↗

    Fusion energy is recognized as one of the cleanest base-load power sources with abundant fuel reserves, inherent safety and near-zero carbon emissions, which is expected to fundamentally address global fossil energy depletion and climate change. Fusion reactors generate multi-grade waste heat covering wide temperature intervals: high-temperature heat from blanket modules can be matched with steam Rankine or supercritical CO 2 Brayton cycles, while massive low-temperature cooling waste heat below 200 °C is produced from divertor cooling loops and vacuum vessel heat dissipation. Such low-grade h…

  6. OpenAlex · Published · First archived

    E-Infinity Ecosystem: Peer-to-Peer Energy Trading Using X-Changer and Energinx Smart Meters for Reverse Power Flow Prevention ↗

    Peer-to-peer (P2P) energy trading in industrial settings is rarely validated with metered data. This paper studies the E-Infinity Ecosystem, coupling the X-Changer trading platform with Energinx IoT smart meters that limit reverse power flow (RPF) at the meter, deployed at a ceramic factory in Saraburi, Thailand. Contributions include (i) coupling meter-level export limitation with interval-level bilateral matching under conventional billing; (ii) an analytical bound on export above the admitted level; (iii) a proof that two-building allocation loses no energy relative to pooled metering; and…

  7. OpenAlex · Published · First archived

    A Loop-Space Embedded Optimization Framework for Energy-Efficient Underground Mine Ventilation Networks ↗

    Underground mine ventilation is a safety-critical engineering system and one of the largest electricity consumers in mining, typically accounting for 40–60% of a mine’s electrical demand. Allocating airflow economically without violating safety limits is therefore central to energy-efficient ventilation regulation. This study proposes an optimization framework that couples loop-space embedding with a sine–cosine and Cauchy mutation-enhanced sparrow search algorithm (SCSSA). Loop-space embedding reparameterizes the branch airflow vector on the null space of the network incidence matrix, so that…

  8. OpenAlex · Published · First archived

    PERFORMANCE ENHANCEMENT OF ELECTRIC VEHICLE HYBRID ENERGY STORAGE SYSTEMS USING ULTRACAPACITORS AND BATTERY AGING ANALYSIS ↗

    With the proliferation of Electric Vehicles (EVs) and the need for efficient, reliable, and sustainable energy storage solutions that enhance vehicle performance and battery life, the market is experiencing a surge in demand for such solutions. Lithium-ion batteries are popular in EVs due to their high-energy density and durability, but they are sensitive to degradation from repeated charging and discharging cycles, heat effects, heavy current surges and aging. This can lead to reduced battery capacity, high battery internal resistance, and a negative impact on the vehicle's performance. This…

  9. OpenAlex · Published · First archived

    EMD-THNet: An Energy-Guided Hierarchical Temporal Network for Doppler Signal Restoration and Frequency Tracking ↗

    Accurate restoration and frequency tracking of non-stationary Doppler signals remain difficult under mixed and distribution-shifted noise. This study proposes EMD-THNet, a supervised one-dimensional framework that preserves the full 4096-sample resolution after offline empirical mode decomposition (EMD), combines a raw-waveform branch with a shared IMF encoder and energy-guided masked attention, and uses a hierarchical temporal encoder-decoder with waveform-restoration and instantaneous-frequency heads. The model was trained, validated, and tested using 96, 32, and 32 independently generated A…

  10. OpenAlex · Published · First archived

    EFFICIENT RESIDENTIAL EV CHARGING USING PHOTOVOLTAIC ENERGY AND INTELLIGENT ENERGY SCHEDULING ↗

    As EVs become increasingly popular, the need for charging infrastructure has surged, especially for its efficiency, cost-effectiveness, and eco-friendliness. The project, Adaptive Solar-Assisted Residential EV Charging System with Intelligent Energy Management and Vehicle-to-Home Support, focuses on maximizing energy use and minimizing reliance on traditional electric distribution systems. The designed system includes a PV generation system, home loads, EV batteries, bidirectional power converters, and an adaptive control system to ensure energy management reliability and economic viability. H…

Live window recorded . This is the ingestion observation time, not the publication or discovery date of each source.

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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