Showing 921 - 940 results of 8,139 for search '"elevation"', query time: 0.06s Refine Results
  1. 921

    Two-Dimensional AOA Estimation Based on a Constant Modulus Algorithm by Saleh O. Al-Jazzar, Zoubir Hamici, Sami Aldalahmeh

    Published 2017-01-01
    “…An extension to estimate and automatically pair the elevation and azimuth angles for different sources is derived and proved in this paper. …”
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  2. 922

    Study on the application of IGSO into mobile satellite communication by ZHANG Geng-xin1, LI Su-dan2, GAN Zhong-min1

    Published 2006-01-01
    “…The related coverage performance,Doppler shift and service-supporting capability of the IGSO constellation was studied for the given area.The results show that,the constellation,which consists of two or three IGSO satellites,can achieve good coverage characteristics(the percent of time of one and more satellites coverage and average elevation an-gle)to the Chinese and nearby area with small Doppler shift.The link budget shows that,adopting IGSO can effectively solve the low elevation angle problem faced by GEO satellite,and similar performance,which can only be implemented by a very big GEO satellite,can be achieved by two or three relatively small IGSO satellites.So the solution of adopting IGSO to provide mobile satellite communication system is technically feasible.…”
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  3. 923

    Study on the Extraction of Urban Water Systen and River Basin Based on Multiple-source DEM Fusion by LIU Jiajia, ZHOU Zuhao, LIU Lin, LU Bin, DAI Dongchen, ZHU Jiasong, YAN Ziqi

    Published 2020-01-01
    “…There is difference on extraction of urban water system and river basin because different data source of DEM has a different elevation error. In order to reduce the impact of single DEM error, this paper proposes an effective way to improve the DEM accuracy by fusing the multi-source DEM and reducing the local error. …”
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  4. 924

    Our Interplanetary Bodies by Marie Siguier

    Published 2019-12-01
    “…While the sublime Burkean modernist was an illusionist and attempted to distance the observer from a terrifying nature to have him feel terror, elevation or rapture, the installation encompasses the individual and sends him back to his own physical and cognitive experience, as well as to an renewed experience of space and senses through immersion in a “cosmos programme” that nevertheless produces a feeling of elevation faced with what Lyotard called “the unpresentable”: the absolutely great, the absolutely powerful.…”
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  5. 925

    DATA⁃DRIVEN RELIABILITY ANALYSIS MODEL OF QINGHAI⁃TIBET RAILWAY IN PERMAFROST ZONE by WANG JinBo, TANG JiaYin, LIU XinLing, WU Yi

    Published 2024-08-01
    “…To ensure the safety of train operation in the plateau permafrost region of the Golmud⁃Lhasa section of the Qinghai Tibet Railway Phase II project,based on the original time series elevation data of railway subgrade in permafrost region,the product season model under various subgrade types is established to fit the uneven settlement degradation trajectory of subgrade and effectively predicted elevation values with confidence intervals.The differential operation was used to analyze the subgrade settlement degradation values.The failure time extrapolation method was used to complete the reliability evaluation,and the settlement threshold was set based on driving safety.The simulation results show that it can accurately forecast permafrost thawing degradation,and the research findings can be used by the logistics support department to conduct daily subgrade maintenance.…”
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  6. 926

    Effect of Oral and Vaginal Hormonal Contraceptives on Inflammatory Blood Biomarkers by Afshin A. Divani, Xianghua Luo, Yvonne H. Datta, James D. Flaherty, Angela Panoskaltsis-Mortari

    Published 2015-01-01
    “…We did not observe the same elevation for other inflammatory biomarkers for the CRP ≥ 3 group among vaginal contraceptive users. …”
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  7. 927

    Paradigm Shift in the Management of the Atrophic Posterior Maxilla by Rabah Nedir, Nathalie Nurdin, Paul Khoury, Marc El Hage, Semaan Abi Najm, Mark Bischof

    Published 2014-01-01
    “…However, placement of short implants with the osteotome sinus floor elevation technique and without graft can be proposed for an efficient treatment of clinical cases with a maxillary residual bone height of 4 to 8 mm. …”
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  8. 928

    Soil Properties Mediated by Topography Influence Carbon Stocks in a Teak Plantation in the Deciduous Forest Zone of Ghana by Jones Agyei Kumi, Michael Ansong, Winston Asante, Boateng Kyereh

    Published 2022-01-01
    “…Although stand density was statistically similar for the three elevations, tree, diameter, and basal area significantly differed among the three elevations. …”
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  9. 929

    Reliability and Accuracy of Standard Reference Procedures for Measurements of Trunk and Arm Postures in Ergonomics by Carl M. Lind, Ida-Märta Rhen, Mikael Forsman

    Published 2025-01-01
    “…Additionally, the accuracy of the N-position for measuring arm elevation angles was compared with one alternative procedure. …”
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  10. 930

    Profiles of Biomarkers of Excess Alcohol Consumption in Patients Undergoing Total Hip Replacement: Correlation with Function by Paul J. Jenkins, Andrew D. Duckworth, Francis P. C. Robertson, Colin R. Howie, James S. Huntley

    Published 2011-01-01
    “…Gamma-glutamyltransferase was elevated in 150 (17.6%), and mean corpuscular volume was elevated in 23 (4%). …”
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  11. 931

    On the Fine-Scale Topography Regulating Changes in Atmospheric Hydrological Cycle and Extreme Rainfall over West Africa in a Regional Climate Model Projections by M. B. Sylla, A. T. Gaye, G. S. Jenkins

    Published 2012-01-01
    “…The results show that while ECHAM5 projects wetter climate along the Gulf of Guinea and drier conditions along the Sahel, RegCM3 produces contrasting changes for low-elevation (negative) and high-elevation (positive) terrains more marked during the second period. …”
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  12. 932

    The long multiphase trunk–tributary surge history of the high-Arctic Chapman Glacier, 1959–2023 by Wesley Van Wychen, Hester Jiskoot, Kristie Shannon, Carolyn Gorwill

    Published 2025-12-01
    “…Here, we present a multidecadal record (1999–2023) of flow velocities, strain rates, and elevation changes for Chapman Glacier, a 40-km-long land-terminating glacier on Umingmak Nuna (Ellesmere Island), using ITS_LIVE (Inter-mission Time Series of Land Ice Velocity and Elevation), Sentinel-1, and elevation time series data products. …”
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  13. 933

    Space-based long term condition monitoring of cold region pavement with PS-InSAR by Yusheng Jiang, Xiong Yu

    Published 2025-01-01
    “…Field monitoring of pavement elevation changes remain challenging and expansive. …”
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  14. 934

    Effect of Experimental Warming on Forage Nutritive Value and Storage in Alpine Meadows at Three Different Altitudes of Nianqing Tanggula Mountain, Northern Tibet: A Long-Term Exper... by Fusong Han, Wei Sun, Shaowei Li, Chengqun Yu, Jun Xu, Tianyu Li, Yujie Deng, Dorblha, Chuhong Chen, Dawaqiongda, Luobu, Gang Fu

    Published 2025-01-01
    “…A long-term warming experiment (with open-top chambers used to elevate temperature) was conducted at three elevations (relatively low, mid-, and high elevations with 4313, 4513, and 4693 m) of Northern Tibet in 2010 to compare the differences in forage nutritional quality and storage response to warming among three elevations and to explore the relationships between forage nutritional quality and production. …”
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  15. 935

    Effect of mutual coupling and antenna correlation on MIMO system in three-dimensional spatial channel models by Jie ZHOU, Jing-feng CHEN, Lin QIU, Kikuchi HISAKAZU

    Published 2012-06-01
    “…A channel model for frequency nonselective Rayleigh fading MIMO channel was set up and the channel model setting was extended to three-dimensional space.The mutual coupling between antenna elements was analyzed based on the equivalent network model of the multiple-antenna.The general spatial correlation expressions of channel model with the impact of mutual coupling were derived in the three-dimensional spatial channels.When the receivers were different antenna arrays,the effect of the angular parameters associated with the mean azimuth of arrival(MAOA),azimuth spread(AS),meant elevation of arrival(MEOA)and elevation spread(ES)on the MIMO system capacity was investigated.Numerical results verifiy the impact of different angle spread on spatial correlation with the mutual coupling and indicate that the system capacity is more dependent on the MAOA and MEOA than the AS and ES.…”
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  16. 936

    Comparison Study of Two Different Sun-Tracking Methods in Optical Efficiency of Heliostat Field by K.-K. Chong, M. H. Tan

    Published 2012-01-01
    “…There are two sun-tracking methods widely used for the heliostat, which are conventional Azimuth-Elevation and revolutionary Spinning-Elevation methods. …”
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  17. 937

    Sepsis in Internal Medicine: blood culture-based subtypes, hospital outcomes, and predictive biomarkers by Gaetano Zizzo, Gabriele Guazzardi, Daniela Bompane, Francesco Di Terlizzi, Giorgio Rotola, Ilario Stefani, Michela Medugno, Mario Bucalo, Antonino Mazzone

    Published 2025-01-01
    “…Blood culture-negative sepses showed shorter stays and higher mortality (acute kidney injury and fast deterioration) compared to culture-positive ones; polymicrobial sepses showed higher ICU transfer rates (acute respiratory distress); while multidrug-resistant (MDR+) and/or polymicrobial sepses showed longer stays and higher mortality (complicated course) compared to drug-sensitive or monomicrobial ones. C-reactive protein elevation predicted rapidly evolving culture-negative sepsis, whereas lower leukocyte counts predicted prolonged hospitalization; higher fractions of inspired oxygen predicted polymicrobial sepsis, while lactate elevation predicted ICU transfer; ferritin elevation and increased leukocyte counts predicted MDR+ sepsis, while further ferritin elevation and decreased platelet counts predicted death. …”
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  18. 938

    Forest stand height predicted from ICESat-2 ATLAS data for forest inventory and comparison to airborne laser scanning metrics by Lang Mait, Tampuu Tauri, Trofimov Heido

    Published 2024-12-01
    “…The linear model between the Estonian digital terrain model elevation and ATL08 ground elevation had a determination coefficient of R2=99.97% and residual standard error of δ=0.51 m when a geographic location was included. …”
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  19. 939

    Degree of Acute Kidney Injury before Dialysis Initiation and Hospital Mortality in Critically Ill Patients by Charuhas V. Thakar, Annette Christianson, Peter Almenoff, Ron Freyberg, Marta L. Render

    Published 2013-01-01
    “…In a multicenter observational cohort of patients-admitted to intensive care units (ICU), we assessed whether creatinine elevation prior to dialysis initiation in acute kidney injury (AKI-D) further discriminates risk-adjusted mortality. …”
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  20. 940

    Evaluation of Ocular Versions in Graves’ Orbitopathy: Correlation between the Qualitative Clinical Method and the Quantitative Photographic Method by Cristiane de Almeida Leite, Thaís de Sousa Pereira, Jeane Chiang, Allan C. Pieroni Gonçalves, Mário L. R. Monteiro

    Published 2020-01-01
    “…The mean quantitative measurements of versions were significantly different for each clinical category (normal, moderate alterations, and severe alterations) in the following five positions: abduction, adduction, elevation in abduction, elevation, and elevation in adduction (p<0.001). …”
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