Showing 21 - 40 results of 74 for search 'detection density variations value', query time: 0.14s Refine Results
  1. 21

    UAV LiDAR expands the understanding of forest tree diversity by Jianyang Liu, Ying Quan, Guoqiang Zhao, Baozhong Yuan, Bin Wang, Mingze Li

    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. …”
    Get full text
    Article
  2. 22

    Population dynamics of Tricentrus sp. and detection of jujube witches'-broom phytoplasma in a Shandong jujube orchard by LI Yong, WEI Jingwei, YU Guoyue, TAN Jing, PEI Guangying, LI Shu, YANG Fan

    Published 2025-06-01
    “…[Objective] China's jujube industry has achieved an annual output value exceeding 100 billion RMB, serving as a crucial economic source for approximately 20 million farmers in saline, sandy, and arid regions. …”
    Get full text
    Article
  3. 23

    An Improved Gaussian Mixture Model-Based Data Normalization Method for Removing Environmental Effects on Damage Detection of Structures by Xue-Yang Pei, Hai-Bin Huang, Peng Cao

    Published 2025-01-01
    “…Next, on the basis of the constructed GMM, the modal frequency data are normalized to extract damage features that remain unaffected by environmental variations. Subsequently, Hotelling’s T2 statistic and its cumulative form are calculated for the damage features and designated as the damage indicators; meanwhile, the corresponding damage thresholds are also calculated according to the kernel density estimation technique. …”
    Get full text
    Article
  4. 24

    Spatiotemporal evolution of landscape ecological risk and its driving factors of the Beijing–Tianjin–Hebei major mineral belt, 1985–2022 by Yilin Wang, Xiaohong Wang, Wei Zhang, Weidong Man, Mingyue Liu, Linlin Jiao

    Published 2025-01-01
    “…The ‘high-high’ aggregations are primarily located in the northern, central and western parts of the study area, while the ‘low-low’ aggregation zones are mainly located in the southeastern study region. (4) The spatial distribution of landscape ecological risk is predominantly shaped by population density and slope. In the context of interactive factor detection, the positive interaction between slope and average annual temperature, night-time illumination and slope, population density and annual precipitation were identified as exerting a more significant influence on the observed spatial differentiation of landscape ecological risk. …”
    Get full text
    Article
  5. 25

    Dendrochemical analysis of Brachystegia longifolia Benth as an indicator of Sulphur deposition in a copper smelting area of Mufulira, Zambia by Charles Mulenga, Daigard Ricardo Ortega-Rodriguez, Hermes Dias Brito, Darius Phiri, Abubakar Sadiq Mohammed, Chisala A. Lwali, James H. Speer

    Published 2025-05-01
    “…This study investigated the dendrochemical potential of Brachystegia longifolia in detecting environmental change induced by variations in industrial pollution load. …”
    Get full text
    Article
  6. 26

    Magnetopause Boundary Detection Based on a Deep Image Prior Model Using Simulated Lobster-Eye Soft X-Ray Images by Fei Wei, Zhihui Lyu, Songwu Peng, Rongcong Wang, Tianran Sun

    Published 2025-07-01
    “…To address these challenges, a boundary detection approach is developed that combines image calibration with denoising based on deep image prior (DIP). …”
    Get full text
    Article
  7. 27

    Serum and urine apolipoprotien A1 (ApoA1) as biomarkers in bladder cancer by Farhan Hussien Khalaf, Manal Kamal Rasheed, Mohammed Bassil Ismail

    Published 2024-06-01
    “…The most important protein that makes up high density lipoprotein (HDL), ApoA-I apolipoprotein A1 is essential in regulating the right amount of cholesterol. …”
    Get full text
    Article
  8. 28
  9. 29

    Optical and electrical properties of pristine and transition Metals-doped graphene quantum dots as gas sensors toward H2O and NO2: A first principles study by Hamideh Sharifpour, Naser Hakimi Raad, Ebrahim Nadimi, Negin Manavizadeh, Siavosh Samoodi

    Published 2025-07-01
    “…In this work, we theoretically investigate the variations in the absorbance spectra of hexagonal graphene quantum dots (GQDs) under the influence of different gas molecules to evaluate their potential for optical gas sensing. …”
    Get full text
    Article
  10. 30
  11. 31

    Mechanism–Data Collaboration for Characterizing Sea Clutter Properties and Training Sample Selection by Wenhao Chen, Yong Zou, Zhengzhou Li, Shengrong Zhong, Haolin Gan, Aoran Li

    Published 2025-04-01
    “…Multi-feature-based maritime radar target detection algorithms often rely on statistical models to accurately characterize sea clutter variations. …”
    Get full text
    Article
  12. 32

    Machine learning for predicting metabolic-associated fatty liver disease including NHHR: a cross-sectional NHANES study. by Liyu Lin, Yirui Xie, Zhuangteng Lin, Cuiyan Lin, Yichun Yang

    Published 2025-01-01
    “…<h4>Objective</h4>Metabolic - associated fatty liver disease (MAFLD) is a common hepatic disorder with increasing prevalence, and early detection remains inadequately achieved. This study aims to explore the relationship between the non-high-density lipoprotein cholesterol to high-density lipoprotein cholesterol ratio (NHHR) and MAFLD, and to establish a predictive model for MAFLD using NHHR as a key variable.…”
    Get full text
    Article
  13. 33

    A microgravity investigation of the subsurface at the United Arab Emirates University campus by Fidha Farzana Ismail, Hakim Saibi

    Published 2025-07-01
    “…Gravity methods are widely used in geophysical exploration to detect density variations that may indicate subsurface anomalies. …”
    Get full text
    Article
  14. 34

    Spatial and Temporal Mapping of RF Exposure in an Urban Core Using Exposimeter and GIS by Montaña Rufo-Pérez, Alicia Antolín-Salazar, Jesús M. Paniagua-Sánchez, Antonio Jiménez-Barco, Francisco J. Rodríguez-Hernández

    Published 2025-02-01
    “…The study’s innovative approach lies in the integration of GIS technology to uncover and visualize temporal patterns in exposure, particularly during periods of higher pedestrian density. This integration facilitated both the detection of temporal variations and the spatial representation of these changes, enabling rapid identification and assessment of exposure hotspots.…”
    Get full text
    Article
  15. 35

    Population trends of jaguars in a tropical forest in southern Mexico by Fernando M. Contreras‐Moreno, Lizardo Cruz‐Romo, Daniel Jesús‐Espinosa, Khiavett G. Sánchez‐Pinzón, Víctor Sánchez‐Cordero, Beatriz C. Luna‐Olivera, José J. Flores‐Martínez, Mario C. Lavariega

    Published 2025-08-01
    “…Instead, we observed a relationship between (1) distance to roads and detection, (2) net primary productivity and movement, and (3) distance to borders and population density. …”
    Get full text
    Article
  16. 36

    Exploratory Analysis of Radiomics and Pathomics in Uterine Corpus Endometrial Carcinoma by Valentina Brancato, Nunzia Garbino, Marco Aiello, Marco Salvatore, Carlo Cavaliere

    Published 2024-12-01
    “…Most significant and high cross-scale associations were observed between ADC textural features and features from cell density maps. Correlations involving morphometric features and ADC and T1C first-order features were also observed, reflecting variations in tumor aggressiveness and tissue composition. …”
    Get full text
    Article
  17. 37

    Berry curvature-induced transport signature for altermagnetic order by T. Farajollahpour, R. Ganesh, K. V. Samokhin

    Published 2025-07-01
    “…Abstract Altermagnetism has been detected in several materials using spin-sensitive probes. …”
    Get full text
    Article
  18. 38
  19. 39

    GRAVITY ANOMALIES OF THE CRUST AND UPPER MANTLE FOR CENTRAL AND SOUTH ASIA by V. N. Senachin, A. A. Baranov

    Published 2016-12-01
    “…The anomalies range from –570 to +350 mGal, which is about twice the range of variations of this field. This directly indicates the presence of large density variations in the lithospheric mantle, which should compensate for the anomalous crustal masses. …”
    Get full text
    Article
  20. 40

    Early Fault Diagnosis and Prediction of Marine Large-Capacity Batteries Based on Real Data by Yifan Liu, Huabiao Jin, Xiangguo Yang, Telu Tang, Qijia Song, Yuelin Chen, Lin Liu, Shoude Jiang

    Published 2024-12-01
    “…To facilitate prompt fault detection, a fault diagnosis method based on the Density-Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm is proposed, utilizing the voltage data of battery clusters. …”
    Get full text
    Article