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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 ↗698 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
Finite-frequency Control and Energy Optimization of Nonlinear Wind Turbines Using T–s Fuzzy Models ↗
This paper proposes an integrated fuzzy control and energy management strategy for nonlinear wind energy systems by combining the generalized Kalman–Yakubovich–Popov (gKYP) lemma with Takagi–Sugeno (T–S) fuzzy modeling. The nonlinear dynamics of the wind turbine are represented by a T–S fuzzy model, which enables the design of a finite-frequency Linear Matrix Inequality (LMI)-based controller. An observer-based structure incorporating a fuzzy Sliding Mode Observer (SMO) is developed to estimate unmeasured states and improve robustness against disturbances and modeling uncertainties. The contro…
- OpenAlex · Published · First archived
Numerical Design and Performance Optimization of Lead‐Free CsSnGeI 3 Perovskite Solar Cells Using Cu 2 O Hole Transport Layer via SCAPS‐1D ↗
ABSTRACT Perovskite solar cells represent an innovative photovoltaic technology, surpassing traditional silicon solar cells in efficiency, production cost, and versatility. In this study, we present silicon‐based traditional perovskite solar cells that are more flexible, more economical, and more efficient using SCAPS‐1D software. The primary objective of this research was to create environmentally benign and highly efficient perovskite solar cells. The optimal device structure, FTO/ZnS/CsSnGeI 3 /Cu 2 O/Au, consists of a CsSnGeI 3 absorber layer and ZnS as the buffer layer, electron transport…
- OpenAlex · Published · First archived
Improved RBS characterization of TiN nuclear targets using a thick Ti interlayer ↗
Accurate Ti/N atomic ratios are required for cross-section measurements of the 14 N ( p , γ ) 15 O reaction. We fabricated TiN/Ti/Si reference samples and corresponding TiN/Ti/Ta reaction targets by filtered cathodic vacuum arc deposition. A thick Ti interlayer shifted the Si substrate signal to lower energies, creating a low-background window for nitrogen analysis. Rutherford backscattering spectra measured with a 3.15 MeV 7 Li 2 + beam were analysed using SIMNRA. The fitted areal densities of the Ti interlayer and TiN layer were 5118.742 × 1 0 15 and 951 × 1 0 15 atoms cm −2 , corresponding…
- OpenAlex · Published · First archived
Performance Assessment of a Solar Photovoltaic and Biogas Hybrid Renewable Energy System Under a Combined Dispatch Strategy ↗
This study investigates the techno-economic and environmental performance of a hybrid renewable energy system integrating solar photovoltaic (PV), biogas, and battery storage for a large-scale abattoir in Lagos, Nigeria.Using HOMER Pro simulations, the research evaluates the effectiveness of a combined dispatch (CD) strategy that dynamically alternates between load-following and cycle-charging modes based on net load conditions and future load forecasting.The abattoir's baseline empirical daily energy consumption of 626.05 kWh/day was scaled to a design load of 2,426.4kWh/day to simulate a rob…
- OpenAlex · Published · First archived
PS-CAHE: Protocol-Semantic and Confusion-Pair-Aware Fusion for UAV Intrusion Detection ↗
Flow-based intrusion detection in unmanned aerial vehicle (UAV) networks can underuse protocol relationships and model complementarity. The Protocol-Semantic and Confusion-Pair-Aware Heterogeneous Ensemble (PS-CAHE) combines semantic features, training-only confusion-pair selection and two fusion weights. On 113,952 deduplicated UAVIDS-2025 flows, PS-CAHE achieved 95.58% Macro-F1 and 93.88% Matthews correlation coefficient on the fixed holdout. The full pipeline improved Macro-F1 by 0.83 percentage points over Original XGBoost; the pair-aware increment over global out-of-fold (OOF) weighting w…
- OpenAlex · Published · First archived
Producing biogas from energy cover crops in France: Potential production and agro-environmental impacts ↗
Anaerobic digestion produces renewable energy such as biogas to replace fossil one. Cover crops are an interesting resource without competing for food production while producing some ecosystem services. We assessed the potential of cover crops to produce energy in France at high resolution and their agro-environmental impacts. We used a modelling chain of four models to simulate the cropping systems and the biogas plant. We designed and simulated over 30 years the baseline and three scenarios: (i) multi-service cover crops, (ii) energy cover crop insertion and (iii) energy cover crop extension…
- OpenAlex · Published · First archived
Coupled aero-structural-electrical modeling and sensitivity analysis of a bladeless resonant wind turbine with hybrid energy harvesting ↗
Abstract Bladeless resonant wind turbines are an alternative technology for small-scale wind energy harvesting because they convert vortex-induced structural oscillations into electrical power without rotating blades. However, their efficiency is strongly affected by the coupled interaction between wake dynamics, structural vibration and energy harvesting. This work presents a reduced-order aero-structural-electrical model for a bladeless resonant wind turbine with hybrid electromagnetic–piezoelectric energy harvesting. The wake dynamics are represented using a Van der Pol-type oscillator, whi…
- OpenAlex · Published · First archived
Low-cost neutral pH viologen-TEMPO based aqueous organic redox flow battery: The critical role of electrolyte formulation on stability and efficiency ↗
Redox flow batteries based on aqueous organic electrolytes emerge as strong competitors to traditional systems. Despite significant efforts to develop new active materials, finding a stable, cost-effective catholyte with high redox potential remains challenging. This work presents a neutral pH Aqueous Organic Redox Flow Battery employing 4-sulfate-2,2,6,6-tetramethylpiperidin-N-oxyl (TEMPO-SO 4 K) as catholyte and 1,1′-bis(3-sulfonatopropyl)-4,4′-bipyridinium ((SPr) 2 V) as anolyte, achieving a high cell voltage of 1.25 V. The key scientific contribution of this work is the rational design of…
- OpenAlex · Published · First archived
Low-energy laser peening induces surface microtopography and enhances early osteoblastic cell attachment on commercially pure titanium ↗
Abstract Low-energy laser peening (LELP) was applied to commercially pure titanium (JIS Class 2) immersed in water using a Q-switched Nd: YAG microchip laser with a wavelength of 1064 nm, a pulse energy of 2.4 mJ, a pulse duration of 0.43 ns and a nominal spot diameter of 0.20 mm. MC3T3-E1 murine pre-osteoblastic cells were cultured on the LELP-treated specimens to evaluate early osteoblastic cell responses. LELP formed periodic microtopographic patterns with peaks reflecting the laser-scanning sequence and pulse density. As the laser pulse density increased from 100 to 400 /mm 2 , the arithme…
- OpenAlex · Published · First archived
SCARO: Scenario-Conditioned Risk Optimization for Day-Ahead Battery Energy Storage Scheduling ↗
Day-ahead battery arbitrage requires assessing the return and downside risk of complete charge–discharge cycles. We propose Scenario-Conditioned Risk Optimization (SCARO), which corrects supply and demand forecasts and maps jointly resampled whole-day residuals to price paths. An exact planner identifies adverse outcomes separately for each feasible schedule and combines mean and lower-tail profit to select an operating cycle or no operation. A 182-day rolling evaluation in the Western Inner Mongolia real-time electricity market compares SCARO with 21 baselines for a battery with zero initial…
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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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