Showing 121 - 140 results of 4,387 for search '"altitude"', query time: 0.11s Refine Results
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    Car Detection from Low-Altitude UAV Imagery with the Faster R-CNN by Yongzheng Xu, Guizhen Yu, Yunpeng Wang, Xinkai Wu, Yalong Ma

    Published 2017-01-01
    “…This paper extends the framework of Faster R-CNN for car detection from low-altitude UAV imagery captured over signalized intersections. …”
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    Effect of Acute and Chronic Exposure to High Altitude on the Aerobic and Anaerobic Metabolism in Rats by Qian Ni, Feng Qi Wan, Yu Hong Jing, Xiang Yu Dong, You Cheng Zhang

    Published 2015-01-01
    “…Rats were exposed to an altitude of 4,300 m for 30 days, and those without HA exposure were used as controls. …”
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    Characterization of gut microbiota in Apis cerana Across different altitudes in the Peninsular India by K. Hariprasath, M. Dhanvarsha, S. Mohankumar, M. Sudha, N. Saranya, V. R. Saminathan, S. Subramanian

    Published 2025-04-01
    “…Alpha diversity analysis showed a trend of decreasing species diversity as altitude increased from 200 to 1200 m, with a slight increase observed above 1400 m. …”
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    Clinical features of Tibetan adolescent tuberculosis at high altitudes: a retrospective study by Min Shen, Wen Luo, Banjiu Luobu, Yirong Chen, Peiyan Zhang, Ruisi Qiu, Xuerong Chen, Weiping Guo, Peifen Chen

    Published 2024-12-01
    “…Abstract Background Adolescent pulmonary tuberculosis (TB) is considered inadequately recognized and underreported at high altitudes. This study aimed to investigate the clinical features of adolescent pulmonary TB patients at high altitudes in China. …”
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  13. 133

    AIRCRAFT DETECTION AT LOW AND EXTREME LOW ALTITUDES THROUGH PASSIVE MACROWAVE RADIOLOCATION by R. G. Khekhnev

    Published 2019-06-01
    “…This article deals with describing of the means of electrically charged aircraft detection while they are flying at low and extremely low altitudes (20-60 metres). The equation to count the range of detection that depends on parameters of static electrification of low altitude flying aircraft, on relief nature with its objects in the flying track, on the level of natural interferences on the range of infrared frequencies, on sensitivity of the device that registers the phenomena stated by the author is given.…”
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    Target Detection of Low-Altitude UAV Based on Improved YOLOv3 Network by Haiqing Zhai, Yang Zhang

    Published 2022-01-01
    “…Most existing methods are difficult to detect low-altitude and fast-moving drones. A low-altitude unmanned aerial vehicle (UAV) target detection method based on an improved YOLOv3 network is proposed. …”
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    Low‐Altitude High‐Latitude Stratospheric Aerosol Injection Is Feasible With Existing Aircraft by Alistair Duffey, Matthew Henry, Wake Smith, Michel Tsamados, Peter J. Irvine

    Published 2025-04-01
    “…Seasonal SAI deployment with low‐altitude (13 km) and high‐latitude (60°N/S) injection achieves 35% of the forcing efficiency of a high‐altitude (20 km), annually constant, sub‐tropical (30°N/S) strategy. …”
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    Validity of a machine learning estimation of blood volumes during altitude training by Basile Moreillon, Bastien Krumm, Lena Mettraux, Julian Wackernell, James Spragg, Martin Faulhaber, Raphael Faiss

    Published 2025-01-01
    “… Introduction Altitude training is widely used in endurance sports to improve near sea-level performance through physiological adaptations. …”
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    Seasonal and Altitude Dependence of Thermospheric Metastable Helium Densities Measured by Fluorescence Lidar by C. Geach, B. Kaifler

    Published 2025-01-01
    “…We report on a series of 51 measurements by this instrument spanning an entire winter season and extending to an altitude of 1,000 km, revealing a broad He(23S) layer that peaks at higher altitudes than previously expected.…”
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