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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 ↗664 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
Design and optimization of a geothermal-driven polygeneration system with cascade utilization for green hydrogen production ↗
A polygeneration system is proposed to cascade geothermal heat and liquefied natural gas cold energy for power generation, refrigeration, desalination, and hot water production, while internal electricity drives green hydrogen production. An integrated thermodynamic and exergoeconomic model is developed to evaluate the performance, followed by parametric sensitivity analyses. A scenario-based multi-objective optimization is implemented using NSGA-II coupled with TOPSIS and LINMAP decision-making methods, aiming to simultaneously maximize efficiency, minimize cost, and enhance diverse product y…
- OpenAlex · Published · First archived
Battery Degradation Reduction in Flywheel–Battery Hybrid Energy Storage Using SSA‐Optimized Fuzzy‐PI Control ↗
ABSTRACT Wind‐power fluctuations subject battery energy storage systems to frequent charge‐discharge cycling, thereby accelerating battery degradation and shortening battery lifetime. Hybrid flywheel‐battery energy storage systems provide an effective solution by allowing the flywheel to absorb high‐frequency power fluctuations while the battery supplies the low‐frequency energy component. This work develops a degradation‐aware Sparrow Search Algorithm (SSA) tuning framework for the fuzzy‐PI flywheel controller. The optimization combines DC‐bus voltage error with battery‐current variability, w…
- OpenAlex · Published · First archived
A Dual-Modality Fusion Framework with Adaptive Weighting for Intelligent Fault Diagnosis of UAVs ↗
The rapid expansion of the low-altitude economy places unprecedented demands on the safety and reliability of unmanned aerial vehicles (UAVs). To address the limitations of single-modal feature extraction in capturing heterogeneous complementary information, this paper proposes a temporal and time–frequency dual-modality weighted fusion network (TTF-DWFNet) for UAV fault diagnosis. The proposed framework employs a parallel dual-branch architecture: a temporal modality branch utilizes a one-dimensional Transformer with a broadcast self-attention mechanism to model global temporal dependencies f…
- OpenAlex · Published · First archived
Highly contiguous draft nuclear genome assembly of Teratoramularia sp. strain RD051456 isolated from plant debris in Yamanashi Prefecture, Japan ↗
ABSTRACT We report a highly contiguous draft nuclear genome assembly of Teratoramularia sp. strain RD051456, isolated from plant debris in Yamanashi Prefecture, Japan. PacBio HiFi sequencing and hifiasm assembly produced a 26.26-Mb nuclear genome comprising 17 contigs, providing a resource for taxonomic, phylogenetic, and comparative genomic studies of Teratoramularia .
- OpenAlex · Published · First archived
Energy–Indoor Air Quality–Health Nexus in Rural Residential Retrofits: A Field-Calibrated Coupled Simulation and Multi-Criteria Evaluation for the Central Plains Transitional Climate of China ↗
Rural residential buildings in China’s Central Plains transitional climate zone face intertwined challenges of high heating/cooling energy consumption, severe indoor air pollution from solid-fuel combustion, and associated public health burdens. While envelope energy retrofits are widely promoted for carbon reduction, their integrated impacts on energy performance, indoor air quality (IAQ), and health outcomes remain insufficiently quantified. This study develops a field-calibrated coupled simulation framework to evaluate four retrofit scenarios for typical brick-concrete rural residences in A…
- OpenAlex · Published · First archived
Optimal island configuration of floating photovoltaic systems for clean energy, water conservation, and green hydrogen production ↗
Photovoltaic (PV) systems employing solar power to generate electricity have achieved extensive adoption worldwide and locally due to clean innovations and the electricity shortage problems. Large water reservoirs in arid and semi-arid regions worldwide suffer from significant evaporation losses, exacerbating water and energy crises. Floating photovoltaics (FPV) offer a promising dual-advantage solution by generating renewable electricity, which can also be utilized in green hydrogen production, and reducing evaporation, yet the literature lacks a model to decide the optimal spatial layout of…
- OpenAlex · Published · First archived
From battery fundamentals to sustainable management: A comprehensive review on thermal management, phase change materials, and emerging technologies ↗
Batteries have emerged as an indispensable commodity in today's world. They power vast number of applications, ranging from small devices to large energy storage and electrical vehicles (EVs). Their ability to efficiently store and deliver electrical energy has made them a cornerstone of the global transition toward electrification and sustainable energy systems. Among various energy storage technologies, lithium-ion batteries (LIBs) have emerged as the most dominant due to their high energy density, long cycle life, and relatively low self-discharge rate. Despite the advantages, challenges su…
- OpenAlex · Published · First archived
Dynamic-Weight Fusion of 3D Pose Guidance and Image-Based Visual Servoing for Pre-Contact Alignment in Marine Engineering Equipment Assembly ↗
The small-clearance assembly of marine engineering equipment requires the robot to correct coupled pose deviations before contact while retaining fine local alignment. This paper presents an eye-in-hand red, green, and blue plus depth (RGB-D) controller that computes a 3D pose-guidance velocity and an image-based visual-servoing (IBVS) velocity in parallel. Distance and attitude-angle errors set a bounded gain on the 3D branch, while the IBVS gain remains fixed; both velocities are expressed in the same six-dimensional end-effector frame. Each of three initial-deviation conditions was repeated…
- OpenAlex · Published · First archived
A network-aware hybrid deep reinforcement learning optimization framework for microgrid energy management under uncertainty ↗
Coordinating operating cost, network losses, and operational security under uncertain load and photovoltaic (PV) generation is a key challenge in distribution-system energy management. This paper presents a two-stage hybrid day-ahead energy management system that combines a deep Q-network (DQN) with second-order cone quadratic programming (SOCQP) for modified IEEE 13-bus and 33-bus systems. The DQN was trained on 92 daily trajectories selected from January, July, and November 2017 and evaluated on three unseen days in March, August, and December. Training across four random seeds showed consis…
- OpenAlex · Published · First archived
A Novel Class-Wise Dynamic Anchor Weighting Fusion Framework for Cross-Condition Fault Diagnosis of Offshore Wind Turbine Drivetrain Systems ↗
Offshore wind turbines operate under harsh and time-varying marine environments, leading to significant distribution shifts between source and target domains. These challenges are further intensified by limited fault samples, imbalanced class distributions, and difficult maintenance access in maritime scenarios. To address these issues, this paper proposes a multi-source domain adaptation method, termed the class-wise dynamic anchor weighting fusion framework (CDAWF), for offshore wind turbine drivetrain fault diagnosis. CDAWF dynamically assigns weights to different source domains according t…
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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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