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Models, systems, networks in economics, engineering, nature and society
Published 2025-02-01Article -
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Influence of mining-induced ground fissures with different widths on soil anti-scourability in northern Shaanxi coal mining area in the middle reaches of the Yellow River
Published 2025-02-01“…As the most significant and representative form of mining damage in the coal mining area of northern Shaanxi in the middle reaches of the Yellow River, the soil erosion effect caused by mining ground fissures can not be ignored. …”
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Reaching experts for enhanced referral (REFER) to pain psychology: a modified Delphi approach with multidisciplinary paediatric pain providers at a specialised center in the USA
Published 2024-12-01“…Paediatric pain providers also suggested minimising barriers through a flexible, stepped-care approach that adapts the delivery of pain psychology beyond traditional models. However, most statements reached consensus in only one or two panels (52%), indicating a lack of consensus across disciplines. …”
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The application and optimization of rolling processing technology in improving the efficiency of deep hole processing
Published 2024-12-01“…In the experimental stage, the amount of interference, feed speed, and rotation speed were identified as the main influencing factors, and a multi-objective optimization model was established accordingly. Comparative analysis showed that the grinding accuracy was the highest (0.13 μm), while the multi-objective optimization combination and variance combination reached 0.22 and 0.31 μm, respectively. …”
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Study on Start-Up Process of SAGD by Solvent: Experiment Research and Process Design
Published 2021-01-01“…This paper applies a 3D physical model to simulate the solvent-assisted SAGD start-up process. …”
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Research on carbon emissions during the construction process of prefabricated buildings based on BIM and LCA
Published 2025-05-01“…Based on BIM (Building Information Modeling) and LCA (Life Cycle Assessment) theory, and in the case of tram transportation, this paper studies the carbon emission of prefabricated hollow floor slab used in prefabricated buildings in the building stage. …”
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Use of Computational Fluid Dynamics (CFD) Methods to Analyze Combustion Chamber Processes at HVOF Spraying and Their Comparison with Experimental Data
Published 2025-01-01“…This paper discusses the process of high-velocity oxygen fuel (HVOF) spraying with modeling of the gas flow parameters and behavior of WC-Co-Cr powder particles of different fractions (up to 20 µm, 21–35 μm and 36–45 μm). …”
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Modelling of Chain Process of Debris Flow Blocking River and Induced Flood Disaster in Meizoseismal Area ——A Case of Xiazhuang Gully in Wenchuan County
Published 2023-01-01“…After the Wenchuan earthquake,there has been a sharp increase in the frequency of debris flow activity,which is featured by low rainfall threshold,frequent occurrence,wide impact and strong destruction.The hazards mainly include siltation,impact,river blocking and inundation.Among them,the mudslide blocking river shows particularly prominent disaster effect,seriously threatening the improvement of mountain infrastructure,and residents' life and property safety.The research of the dynamic process of river blocking disaster chain of debris flow can provide scientific reference for debris flow hazard prevention and early warning.Based on field surveys,physical tests,remote sensing images and rainfall data for a typical watershed,a numerical simulation was conducted to study the dynamic process of the river blocking disaster chain of debris flow in Xiazhuang Gully.The simulation results show that the debris flow reaches the outlet of the basin at t=120 step;and at t=130 step the debris flow pushes forward and blocks part of the main river;at t=140 and 150 step the debris flow completely blocks the main river,forming a debris-dam with a length,width and thickness of 236.0 m,74.0 m,6.2 m and 312.0 m,79.0 m,and 7.1 m,respectively,which causes the upstream water level to rise,with an inundation depth of the upstream residential area of 3-5 m.By comparing the simulation results with the field measured data,the accuracy of the simulation reaches up to 84.9%,which indicates that the model is of good applicability to simulating the disaster chain process of landslide-debris flow-flood.…”
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Effects of vegetation restoration on soil organic carbon on the Loess Plateau, China using a combined remote sensing and process-based modeling approach
Published 2025-04-01“…The vertical transport process of SOC along the profile was considered in the model. …”
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Automatic Adjustment Method of Operating Parameters in Laser Cleaning Process Based on Image Processing
Published 2025-01-01“…This paper proposes an automatic parameter adjustment method based on image processing. The method first extracts the corrosion image features of the metal and then establishes a parameter prediction model based on the Particle Swarm Optimization-Back Propagation(PSO-BP) neural network. …”
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Method for Increasing the Energy Efficiency of the Gear Teeth Cutting Process by Smoothing the Cutting Force Variation
Published 2024-10-01“…The available solutions for energy optimization in cutting processes mentioned are the improvement of manufacturing equipment, the optimization of processes, and appropriate production scheduling. …”
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Enhancing the supply chain performance of Kayumas specialty coffee based on the SCOR-ANP approach
Published 2024-09-01“…Analysis of supply chain performance based on Supply Chain Operation Reference (SCOR) model then weighted with Analytic Network Process (ANP). …”
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Johnson–Cook Constitutive Model Parameters Estimation of 22MnB5 Hot Stamping Steel for Automotive Application Produced via the TSCR Process
Published 2025-07-01“…In the industrial practice of metal forming, the consistent and reasonable characterization of the material behavior under the coupling effect of strain, strain rate, and temperature on the material flow stress is very important for the design and optimization of process parameters. The purpose of this work was to establish an appropriate constitutive model to characterize the rheological behavior of a hot-formed steel plate (22MnB5 steel) produced through the TSCR (Thin Slab Casting and Rolling) process under practical deformation temperatures (150–250 °C) and strain rates (0.001–3000 s<sup>−1</sup>). …”
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Interventions to enable and reach patients with heart failure and their caregivers, with palliative care (TIER-HF-PC): a study protocol of a two-armed parallel group, open label ra...
Published 2025-03-01“…Timely interventions to enable and reach patients with HF and their caregivers, with PC (TIER-HF-PC) is a novel, nurse coach-led model of PC that integrates PC into HF care. …”
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Construction of advanced persistent threat attack detection model based on provenance graph and attention mechanism
Published 2024-03-01“…In response to the difficulty of existing attack detection methods in dealing with advanced persistent threat (APT) with longer durations, complex and covert attack methods, a model for APT attack detection based on attention mechanisms and provenance graphs was proposed.Firstly, provenance graphs that described system behavior based on system audit logs were constructed.Then, an optimization algorithm was designed to reduce the scale of provenance graphs without sacrificing key semantics.Afterward, a deep neural network (DNN) was utilized to convert the original attack sequence into a semantically enhanced feature vector sequence.Finally, an APT attack detection model named DAGCN was designed.An attention mechanism was applied to the traceback graph sequence.By allocating different weights to different positions in the input sequence and performing weight calculations, sequence feature information of sustained attacks could be extracted over a longer period of time, which effectively identified malicious nodes and reconstructs the attack process.The proposed model outperforms existing models in terms of recognition accuracy and other metrics.Experimental results on public APT attack datasets show that, compared with existing APT attack detection models, the accuracy of the proposed model in APT attack detection reaches 93.18%.…”
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The Initial Evolution of SN 1993J: Piston Phase versus Standard Model
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Rural Resilience Evaluation and Risk Governance in the Middle Reaches of the Heihe River, Northwest China: An Empirical Analysis from Ganzhou District, a Typical Irrigated Agricult...
Published 2025-04-01“…Conducting research on the evaluation of rural resilience and risk governance strategies in the middle reaches of the Heihe River can provide a scientific basis for the sustainable development of rural areas in the inland river basins of arid regions. …”
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