Environment Development and Sustainability, Год журнала: 2024, Номер unknown
Опубликована: Окт. 10, 2024
Язык: Английский
Environmental Earth Sciences, Год журнала: 2025, Номер 84(8)
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Electronics, Год журнала: 2025, Номер 14(10), С. 2036 - 2036
Опубликована: Май 16, 2025
As global energy demand continues to rise, accurate load forecasting has become increasingly crucial for power system operations. This study proposes a novel Complete Ensemble Empirical Mode Decomposition with Adaptive Noise-Fast Fourier Transform-inverted Transformer-Long Short-Term Memory (CEEMDAN-FFT-iTransformer-LSTM) methodological framework address the challenges of component complexity and transient fluctuations in sequences. The initiates CEEMDAN-based signal decomposition, which dissects original sequence into multiple intrinsic mode functions (IMFs) characterized by different temporal scales frequencies, enabling differentiated processing heterogeneous components. A subsequent application Fast Transform (FFT) extracts discriminative frequency-domain features, thereby enriching feature space spectral information. architecture employs an iTransformer module multi-head self-attention mechanisms capture high-frequency patterns most volatile IMFs, while gated recurrent unit (LSTM) specializes modeling low-frequency components longer dependencies. Experimental results demonstrate proposed achieves superior performance average 80% improvement R-squared (R2), 40.1% lower Mean Absolute Error (MAE), 54.1% reduced Squared (RMSE) compared other models. advancement provides robust computational tool grid operators, optimal resource dispatch through enhanced prediction accuracy reduce operational costs. demonstrated capability resolve multi-scale dynamics suggests potential extensions tasks systems involving complex patterns.
Язык: Английский
Процитировано
0
Land, Год журнала: 2024, Номер 13(6), С. 873 - 873
Опубликована: Июнь 17, 2024
As the economic center and major grain-producing area in Southwest China, calculation of carbon budget protection cultivated land Chengdu Plain are vital significance for China to achieve a peak strategy ensure food security. For purpose clarifying trend use focus emissions Plain, level 33 counties was explored. Based on gravity model IPCC emission coefficient method, changing from 2006 2022 clarified. PLS regression LMDI were used explore main influencing factors cropland building land. PLUS simulate future patterns emissions. (1) The cropland, land, water, other unused shifted northeast by 4.23 km, 5.46 8.44 31.58 respectively, that forest grass southeast 11.12 km 3.41 respectively. crops, centers rice maize moved northeastward 15.47 7.52 while wheat southwestward 17.77 km. (2) From 2022, all rise, with total increase 13.552 million tons, sinks 31 continue decline, decrease 0.691 tons. (3) Under natural scenario, sink reduction 0.5391 3.4728 4.5265 tons Among 11 did not under 5 achieved scenario. During study period, there serious loss mainly central part forests within Longmen Mountain, Longquan Leshan City, is need strengthen this region future. can peak, will be more helpful peak.
Язык: Английский
Процитировано
3
ISPRS International Journal of Geo-Information, Год журнала: 2024, Номер 13(3), С. 68 - 68
Опубликована: Фев. 23, 2024
Clarifying the spatiotemporal changes in supply and demand of water-related ecosystem services (WESs) can provide comprehensive support information for ecological governance decisions. However, spatial mismatch between WESs is often overlooked, resulting a lack targeted decision-making. At grid scale, while preserving both natural social attributes, this study quantitatively analyzed Southern River Basin from 2000 to 2020. Ecological zoning was performed based on temporal demand. The OPGD model used investigate impacts socio-economic factors different further explore correlation zones. results show that there significant heterogeneity Economic belts megacities have experienced remarkable changes, with decreasing increasing. significantly affect changes. all zones influenced by In high supply–low zone, WY has highest explanatory power From supply–middle zone low then supply–high PE gradually increases. As starts middle level, HAI dominates increase land use may promote impact This contributes incorporating their correlations into protection restoration system, providing new perspective method regional sustainable management.
Язык: Английский
Процитировано
2
Environment Development and Sustainability, Год журнала: 2024, Номер unknown
Опубликована: Дек. 31, 2024
Язык: Английский
Процитировано
2
Land, Год журнала: 2024, Номер 13(5), С. 634 - 634
Опубликована: Май 8, 2024
Research on land use carbon emission efficiency (LUCEE) in the Pan-Pearl River Delta (PPRD) can aid formulating regional differentiated reduction strategies. In this work, inversion of emissions using night-time light (NTL) data and modified Carnegie Ames Stanford Approach (CASA) model were used to measure net from (NCELU). On basis, SBM-undesirable was assess LUCEE. Additionally, exploratory spatial analysis (ESDA), Dagum Gini coefficient, convergence further introduced analyze correlation, differences, trend Findings indicate that: (1) The NCELU showed an increasing fluctuation. During period 2006–2020, increased −168.58 million tons −724.65 tons. (2) LUCEE exhibited a three-phase fluctuating downward “decrease–rise–decrease”. first decreased 0.612 2006 0.544 2008, then gradually 0.632 2016, finally 0.488 2020. Spatially, manifested distribution characteristic “high north south, low middle”, with distinct clustering features. (3) overall coefficient study 0.1819 0.2461. primary contributor difference over entire sample hypervariable density. (4) PPRD its various subregions displayed significant features absolute conditional β convergence. speed fastest slowest central > west east, speeds 0.0505, 0.0360, 0.0212, respectively. Finally, policy recommendations are proposed achieve neutrality for PPRD.
Язык: Английский
Процитировано
2
Energy & Environment, Год журнала: 2024, Номер unknown
Опубликована: Май 22, 2024
The relationships within the carbon emissions game are diverse and intricate, encompassing both horizontal games between regions vertical involving governments, enterprises, public. To explore complex among emission entities, this study integrated applied system dynamics method to construct a multilevel multiagent cross-game model, analyzing changing trends of strategies different regional research reveals that there is free-riding behavior in governance regions. However, can lead virtuous cycle. attitude government plays crucial role determining whether businesses engage management. Increasing regulatory efficiency does not alter outcome game, but it reduce time required reach Nash equilibrium. enhances simulation theory provides reliable reference for regulation low-carbon development businesses.
Язык: Английский
Процитировано
1
Land, Год журнала: 2024, Номер 13(8), С. 1141 - 1141
Опубликована: Июль 25, 2024
Implementing watershed carbon compensation under the constraint of fiscal imbalance is a crucial approach for China to achieve its “dual carbon” goals. Focusing on 257 counties within Pearl River Basin (PRB), this paper first measured and modified land use emissions, absorption, budget (LUCB) from 2005 2020. Subsequently, their spatiotemporal patterns changes before after modifications were analyzed. Finally, determined subject–object, value, priority order using LUCB as baseline mechanism that combines vertical horizontal directions was constructed. The following findings obtained: (1) At time scale, proportion construction forestland in structure increased, showed an overall upward trend (2) spatial areas with high emissions deficits mainly located lower reaches basin, whereas absorption surpluses widely distributed upper middle reaches. deficit urban municipal districts resource-based relatively serious. (3) In 2020, total amount PRB CNY −8088.61 million. number needed be paid compensated 75 182, respectively. constructed can provide reference other countries regions financial imbalances regional neutrality.
Язык: Английский
Процитировано
1
International Journal of Pavement Engineering, Год журнала: 2024, Номер 25(1)
Опубликована: Окт. 15, 2024
To address the prediction problem of international roughness index (IRI), which is influenced by multiple factors, we propose a hunter-prey optimization (H-PO) TabNet model. First, combined data sources, including traffic flow, climate data, pavement basic, and condition aligned with annual detection for highways at spatial resolution 100 m. Second, conducted feature importance analysis on integrated dataset to identify most significant factors influencing surface smoothness, serve as inputs We employed machine-learning models predict IRI using compiled multisource dataset. After comparing predictive performance different models, selected model base optimised its parameter tuning process H-PO algorithm. Finally, ablation experiments were validate proposed The results demonstrate that H-PO-TabNet achieved best performance, an R2 increase 7.92% compared default settings. also attained highest overall accuracy, value 0.8763. This can improve accuracy provide certain support maintenance activities.
Язык: Английский
Процитировано
1
Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(57), С. 120188 - 120206
Опубликована: Ноя. 8, 2023
Язык: Английский
Процитировано
3