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A Wind Power Density Forecasting Model Based on RF-DBO-VMD Feature Selection and BiGRU Optimized by the Attention Mechanism
Published 2025-02-01“…This paper proposes a novel WPD forecasting model based on RF-DBO-VMD feature selection and BiGRU optimized by an attention mechanism. …”
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Analysis of industrial solid waste for secure and eco-friendly disposal by incineration practices
Published 2025-06-01“…Key parameters analyzed include bulk density, pH, calorific value, and heavy metal concentrations. …”
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Effects on radial growth rate on basic density and compressive strength in 10-year-old Swietenia macrophylla planted in South Kalimantan, Indonesia
Published 2025-07-01“…The trees were classified into three categories (fast-, medium-, and slow-growth) based on the stem diameter. Radial variations of basic density and compressive strength parallel to the grain under green conditions were also determined for 15 selected trees (five trees in each radial growth category). …”
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Local conservation status and economic value of mangrove clam (Pegophysema philippiana) in Sitio Maitom, Barangay Dahican, Mati City, Davao Oriental
Published 2023-12-01“…This paper investigates the local conservation status and economic value of Pegophysema philippiana in Maitom, focusing on its population abundance, size distribution, and threats to survival. …”
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A Fault-Tolerant Localization Method for 5G/INS Based on Variational Bayesian Strong Tracking Fusion Filtering with Multilevel Fault Detection
Published 2025-06-01“…The main contributions are reflected in the following two aspects: first, by innovatively introducing Pearson VII-type distribution for noise modeling, dynamically adjusting the tail thickness characteristics of the probability density function through its shape parameter, and effectively capturing the distribution law of extreme values in the observation data. …”
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Mechanism–Data Collaboration for Characterizing Sea Clutter Properties and Training Sample Selection
Published 2025-04-01“…Based on the characterized clutter properties, a hybrid feature selection strategy is further proposed to construct a diverse and compact training sample set by integrating global density distribution with local gradient variation. …”
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UAV LiDAR expands the understanding of forest tree diversity
Published 2025-06-01“…The results revealed that (1) the diversity indices calculated with importance value correlate better with LiDAR features than with relative density; (2) among heterogeneity metrics, Rao’s Q outperformed the coefficient of variation (CV), and heterogeneity metrics overall performed better than structural features in estimating tree diversity; (3) the LiDAR data provided fine-scale structural information, with the highest accuracy for estimating tree diversity achieved at a 1 m spatial resolution; and (4) features from the cover category, including canopy cover (CC), cover of the herbaceous layer (CH), and cover of the tree layer (CT), demonstrated greater robustness and stronger correlations with tree diversity across different spatial resolutions. …”
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Growth characteristics, stress-wave velocity of stems, and radial variations of wood properties and anatomical characteristics in six-year-old Rubroshorea leprosula and R. macrophy...
Published 2025-03-01“…Radial variations in some wood properties and anatomical characteristics still did not show stable values, suggesting that the wood examined in the present study (about 10 cm in half radius at six‐year old) might be wood with unstable quality, such as juvenile wood.…”
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Kernel Density Based Spatial Clustering of Applications with Noise
Published 2025-05-01“…Building on this foundation, we introduce a flexible framework incorporating various kernel functions, including uniform, conical, Epanechnikov, cosine, exponential, and Gaussian kernels, to estimate the density distribution of data points. The threshold values are selected to identify high-density regions by retaining the top 90% of points, while excluding low-density points as noise, thereby enhancing clustering precision. …”
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Study of the Geographical Distribution, Ecological–Biological Characteristics, and Economic Value of <i>Rosa acicularis</i> Lindl., <i>Rosa laxa</i> Retz., and <i>Rosa spinosissima...
Published 2025-06-01“…Under natural conditions, industrial thickets are mainly formed by <i>R. laxa</i> in the Southern Altai and by <i>R. spinosissima</i> in the Southwestern Altai due to their wide distribution and high plant density. Fruit weight ranged from 2.23 to 2.47 g (<i>R. acicularis</i>), 2.28 to 2.68 g (<i>R. laxa</i>), and 2.17 to 2.55 g (<i>R. spinosissima</i>), values generally lower than those previously reported. …”
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Morphoanatomical variations of sugarcane genotypes: a micro-scale comparative analysis
Published 2025-05-01“…The conventional cultivar exhibited larger mean values for these parameters with the exception of stomatal density, suggesting enhanced capacity for photosynthesis and sap flow under optimal conditions. …”
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Vertical and radial variation in wood acoustical and physical properties of Ailanthus altissima
Published 2025-08-01“…Radially, the damping coefficient was lowest near the pith, increased toward the middle, and reached the highest values near the bark. Shrinkage increased significantly from pith to bark but showed minor axial variation, with similar values at the base and middle, and a significant decrease at the top of the stem. …”
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Variation analysis and comparison of leaf and fruit traits of triploid hybrid progeny in jujube
Published 2025-03-01“…The genetic variation of the triploid progeny were further analyzed, which could provide reference for hybrid parents selection, offspring traits prediction, ploidy breeding of jujube.ResultsThe results indicated that the triploid progeny exhibited significantly higher values for leaf width, straight thorn length, and stomatal length compared to diploid individuals. …”
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Variation patterns of physical property parameters for pipeline transportation of impurity-containing NH3
Published 2025-07-01“…This effect became more evident with increasing molecular weights, concentrations, and temperatures of the impurities. The variation trends of NH3 regarding density, viscosity, and specific heat capacity were found to be less affected by the polar impurity of H2O, despite a corresponding increase in these values with rising H2O concentrations. …”
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Study on the incremental carbon sink of tea plantations under spatio-temporal variation characteristics
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Robotic-Assisted XRF Testing System for In-Situ Areal Density Measurement of Light-Sensitive Explosive Coatings
Published 2025-06-01“…The XRF-measured areal density averaged 12.722 mg/cm<sup>2</sup> with a coefficient of variation (CV) of 3.19%. …”
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Density responses of lesser-studied carnivores to habitat and management strategies in southern Tanzania's Ruaha-Rungwa landscape.
Published 2021-01-01“…Taken together, precipitation, the abundance of apex predators, and the level of anthropogenic pressure likely drive such variation. Striped hyaena were detected only in the Wildlife Management Area and at low density (1.36 [±0.50] individuals per 100 km2), potentially due to the location of the surveyed sites at the edge of the species' global range, high densities of sympatric competitors, and anthropogenic edge effects. …”
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