Showing 861 - 880 results of 969 for search '"altitude"', query time: 0.05s Refine Results
  1. 861

    Butterfly diversity (Lepidoptera: Papilionoidea) of Mt. Blegoš and Mt. Koprivnik (Škofjeloško hribovje, Slovenia) by Luka Šturm, Andrej Peternel, Rudi Verovnik

    Published 2021-12-01
    “…Despite the fact that many species characteristic of higher altitudes were observed, like Aricia artaxerxes, Pyrgus alveus, Erebia stiria and Lasiommata petropolitana, other, which had still been present a few decades ago, were not found (Parnassius apollo and Boloria pales). …”
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  2. 862

    Sliding Mode Control for Robust Path Tracking of Automated Vehicles in Rural Environments by Jose Matute, Sergio Diaz, Ali Karimoddini

    Published 2024-01-01
    “…The effectiveness of the proposed approach is comprehensively evaluated through simulations and experiments encompassing challenging driving scenarios characterized by high-curvature paths, varying altitudes, and sensor disturbances, typical in rural driving environments. …”
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  3. 863

    Cost-Effective Drone Survey of Areas with Elevated Background Radiation by Hédi Katreiner, Béla Kovács, Ákos Horváth, Szabolcs Tóth, Fanni Vörös

    Published 2024-12-01
    “…In this research, we use a DJI Matrice 210 V2 RTK quadcopter equipped with a cost-effective Safecast bGeigie Nano Kit radiation sensor to take measurements at different altitudes above ground. We convert these data into GIS-compatible formats and produce accurate isoline maps using the Minimum Curvature interpolation technique. …”
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  4. 864

    On the Occurrence of GPS Signal Amplitude Degradation for Receivers on Board LEO Satellites by Chao Xiong, Ji‐Sheng Xu, Claudia Stolle, Jose van denIjssel, Fan Yin, Guram N. Kervalishvili, Franz Zangerl

    Published 2020-02-01
    “…In this study we provided the first comparison of the GPS signal amplitude degradations from receivers on board low Earth orbiting satellites at different altitudes. Intense carrier phase variations but almost no amplitude fades (less than 2 dB Hz) are observed when the spaceborne receiver lies right inside the ionospheric plasma irregularities, like the case for the Swarm and CHAMP satellites flying at about 400–500 km. …”
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  5. 865

    Alpine Cold Vegetation Response to Climate Change in the Western Nyainqentanglha Range in 1972–2009 by Xu Wang, Ziyong Sun, Ai-Guo Zhou

    Published 2014-01-01
    “…Alpine vegetation had a trend to increase and expand to higher altitudes with the climate change in the past 40 years. …”
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  6. 866

    Climatological Investigation of Ionospheric Es Layer Based on Occultation Data by Haibing Ruan, Xiuwen Qiu, Xin Guo, Xiangxue Wang, Xin Zhang

    Published 2025-01-01
    “…In the mid- and low latitudes, Es layer activity is more intense in the summer hemispheres, with center peak altitudes of around 105 km. The summer hemisphere exhibits a semi-diurnal periodic pattern, whereas the winter hemisphere shows a weakened diurnal variation. …”
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  7. 867

    Distribution changes of Ormosia microphylla under different climatic scenarios by Pan Huang, Yaqin Xiao, Yurong Sun, Huihua Huang, Zhiwei Gong, Yingfang Zhu

    Published 2025-01-01
    “…At the same time, the potential suitable areas for O. microphylla in China have shown a certain degree of migration trend towards higher latitudes in the north and northwest, as well as a trend towards higher altitudes. The research results will provide data support for the protection of germplasm resources and the development of artificial cultivation techniques for O. microphylla, and provide a theoretical basis for the protection of other rare and endangered plants.…”
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  8. 868

    Preparation of flood susceptibility map and its occurrence probability using Shannon entropy model (case study of Firoozabad river basin) by mohammad ebrahim afifi

    Published 2024-12-01
    “…First, a map of the status of the floods was developed and Then, 10 factors, slope, tilt, lithology, land use, NDVI, SPI, TWI, altitudes, rainfall and distances from the river were selected as flood factors in Firoozabad basin. …”
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  9. 869

    Cultivated and Fallow Land in the Highlands of Cañar (Ecuadorean South Andes): Effects of Farmer Emigration on an Agrarian Landscape by Michel Vaillant, Marc Oswald

    Published 2019-04-01
    “…A decade later, the agrarian landscape reveals a strange paradox: some sections of the landscape, apparently abandoned to wilderness, suggest a progressive decline in agriculture, whereas others suggest the progression of a fodder front to higher altitudes. So what can we say about this landscape that shows a process of set-aside in some of its sections and cultivation in others? …”
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  10. 870

    Path Planning of Unmanned Helicopter in Complex Environment Based on Heuristic Deep Q-Network by Jiangyi Yao, Xiongwei Li, Yang Zhang, Jingyu Ji, Yanchao Wang, Yicen Liu

    Published 2022-01-01
    “…Unmanned helicopters (UH) can evade radar detection by flying at ultralow altitudes, so as to conduct raids on targets. Path planning is one of the key technologies to realize UH’s autonomous completion of raid missions. …”
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  11. 871

    GIS and remote sensing based analysis for monitoring urban growth dynamics in Western Himalayan city of Dharamshala, India by Nishant Mehra, Janaki Ballav Swain

    Published 2025-01-01
    “…The findings indicate increased developmental pressures in the 1500 m elevation and the progression of the urban sprawl towards higher altitudes, thereby increasing the risk of environmental degradation and posing a significant danger to the ecological susceptibility of the region. …”
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  12. 872

    Interactions between Typhoon Choi-wan (2009) and the Kuroshio Extension System by Akiyoshi Wada, Norihisa Usui, Masaru Kunii

    Published 2013-01-01
    “…Simulated central pressure was highly correlated with the axisymmetric mean horizontal specific humidity flux between radii of 50 and 150 km and altitudes of 20 to ~2000 m, suggesting that this flux has potential as a new metric for predicting tropical cyclone intensity. …”
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  13. 873

    Forcing From Lower Thermosphere and Quiet Time Scintillation Longitudinal Dependence by Endawoke Yizengaw, Keith Groves

    Published 2020-11-01
    “…The tropospheric GWs with a vertical wavelength (4 km < λv < 30 km) can also penetrate to higher altitudes and provide enough seeding to the bottom side ionosphere and elicit density irregularity. …”
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  14. 874

    A dexterous and compliant aerial continuum manipulator for cluttered and constrained environments by Rui Peng, Yu Wang, Minghao Lu, Peng Lu

    Published 2025-01-01
    “…Our system can potentially be deployed in challenging conditions, such as pipeline maintenance or electricity line inspection at high altitudes.…”
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  15. 875

    Verification of Forecast Weather Surface Variables over Vietnam Using the National Numerical Weather Prediction System by Tien Du Duc, Lars Robert Hole, Duc Tran Anh, Cuong Hoang Duc, Thuy Nguyen Ba

    Published 2016-01-01
    “…Also, the model performance is poorer for stations with altitudes greater than 500 meters above sea level (masl). …”
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  16. 876

    Nightside Neutral Density Disturbances Collocated With Equatorial Plasma Irregularities Above 450 km: GRACE and GRACE‐FO Observations in 2002–2022 by Hosub Song, Jaeheung Park, Chao Xiong, Jose van den IJssel, Daehee Lee, Jaejin Lee, Yu Yi

    Published 2024-12-01
    “…Abstract We investigate the climatology of Neutral Density Disturbances (NDDs) collocated with Equatorial Plasma Irregularities (EPIs) at altitudes above 450 km by using 20 years of data from the Gravity Recovery and Climate Experiment (GRACE) and GRACE‐FO satellites. …”
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  17. 877

    Radio Absorption in the Nightside Ionosphere of Mars During Solar Energetic Particle Events by Y. Harada, Y. Nakamura, B. Sánchez‐Cano, M. Lester, N. Terada, F. Leblanc

    Published 2023-12-01
    “…Here we investigate 3–5 MHz radio absorption in the nightside ionosphere of Mars caused by enhanced ionization at <100 km altitudes during solar energetic particle (SEP) events. …”
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  18. 878

    The Refraction Correction of Elevation Angle for the Mean Annual Global Reference Atmosphere by Leke Lin, Xiangming Chen, Ranran Hu, Zhenwei Zhao

    Published 2020-01-01
    “…The height of the new formulae is 100 km above sea level. For higher altitudes, correction methods are given based on free-space propagation. …”
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  19. 879

    GOLD Observations of Equatorial Plasma Bubbles Reaching Mid‐Latitudes During the 23 April 2023 Geomagnetic Storm by Deepak Kumar Karan, Carlos R. Martinis, Richard W. Eastes, Robert E. Daniell, William E. McClintock, Chao‐Song Huang

    Published 2024-06-01
    “…Reversed C‐shape equatorial plasma bubbles (EPBs) were observed reaching ∼±36° Mlat (∼40°N and ∼30°S Glat) with apex altitudes ∼4,000 km and large westward tilts of ∼52°. …”
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  20. 880

    Human Trajectory Imputation Model: A Hybrid Deep Learning Approach for Pedestrian Trajectory Imputation by Deb Kanti Barua, Mithun Halder, Shayanta Shopnil, Md. Motaharul Islam

    Published 2025-01-01
    “…The model is evaluated using the Intersection drone the inD dataset, containing trajectory data at suitable altitudes, preserving naturalistic pedestrian behavior with varied dataset sizes. …”
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