Showing 421 - 440 results of 969 for search '"altitude"', query time: 0.08s Refine Results
  1. 421

    Multirotor UAV-Based Photogrammetric Mapping for Road Design by Muhammad Akmal Zulkipli, Khairul Nizam Tahar

    Published 2018-01-01
    “…This study focuses on the UAV as a tool to capture data of the ground from a certain altitude. The analysis includes UAV flight planning, image acquisition, and accuracy assessment of road design. …”
    Get full text
    Article
  2. 422

    Simultaneous prediction of 10m and 100m wind speeds using a model inspired by brain emotional learning by Alireza Hakimi, Parvin Ghafarian

    Published 2025-02-01
    “…Abstract Predicting wind speed simultaneously at multiple heights, particularly at 10 and 100 metres (m), presents unique challenges due to diverse influences. At lower altitudes, wind speed is significantly affected by surface factors including roughness, vegetation, and man-made structures, causing sharp fluctuations, while at higher altitudes, it is primarily influenced by atmospheric conditions, resulting in smoother flow patterns. …”
    Get full text
    Article
  3. 423

    First study on molecular identification of Anaplasma ovis in sheep in southern Kazakhstan by Alexandr Ostrovskii, Madina Kadyrova, Nurdina Yerzhanova, Dinara Kamalova, Amirkhan Kassen, Nailya Tursunbay, Alexandr Shevtsov, Christian Bauer, Kassym Mukanov

    Published 2025-01-01
    “…-positive ewes varied significantly from 21.3% to 50.1% in the provinces. Altitude <500 m above sea level was identified as a risk factor for Anaplasma infection. …”
    Get full text
    Article
  4. 424
  5. 425

    La répartition des chimpanzés à Sebitoli (Parc National de Kibale, Ouganda): influence des facteurs naturels et anthropiques by Sarah Bortolamiol, Marianne Cohen, Milena Palibrk, Sabrina Krief

    Published 2012-12-01
    “…Also chimpanzees most likely occupy high altitude areas (around 1515 meters) and river banks. …”
    Get full text
    Article
  6. 426

    Evaluation of Phytochemical Content and In Vitro Antioxidant Activities of Pistacia lentiscus L. Leaves Extracts, a Medicinal Plant From the Beni-Snassen Forest (Eastern Region of... by Mourad Bendada, Abderrahmane Hadini, Ouahid El Asri, Youness Taarabt, Abderrahmane Nazih, Karim Andich, Khalid El Bekkaye, Khalid Chaabane

    Published 2024-01-01
    “…This scientific research was carried out to measure the content of essential phytochemical constituents and their antioxidant capacities from the hydromethanolic extract of leaves of Pistacia lentiscus L. located on sites at varying levels of altitudes. Our results have shown that at the lowest altitude, there was a height significant (p≤0.05) in the content of flavonoids and polyphenols. …”
    Get full text
    Article
  7. 427

    Prescribed Performance Tracking Control for the Hypersonic Vehicle with Actuator Faults by Zhenghui Yang, Wentao He, Yushan He, Yaen Xie, Jun Li, Shuo Song

    Published 2021-01-01
    “…This paper provides a solution for the trajectory tracking control of a hypersonic flight vehicle (HFV), which is encountered performance constraints, actuator faults, external disturbances, and system uncertainties. For the altitude and velocity control subsystems, the backstepping-based dynamic surface control (DSC) strategy is constructed to guarantee the predefined constraint of tracking errors. …”
    Get full text
    Article
  8. 428

    Evolution of Access Routes to High Mountain Refuges of the Mer de Glace Basin (Mont Blanc Massif, France) by Jacques Mourey, Ludovic Ravanel

    Published 2017-06-01
    “…Glacial shrinkage and the gravitational processes associated with it, which are characteristic of global warming effects in high mountain environments, are affecting mountaineering routes more and more, including access routes to high altitude refuges. These changes have almost never been studied. …”
    Get full text
    Article
  9. 429

    Histoire environnementale et histoire du tourisme en montagne : vers la construction d’une connaissance nouvelle ? Une étude de l’architecture des stations de sports d’hiver dans l... by Caterina Franco

    Published 2021-11-01
    “…Understanding the relationships between the evolution of the projects and the natural and historical components of the sites where they are located and extending the spatial and temporal frameworks of the analyses and the use of multiple sources will clarify how tourism develops in high-altitude areas. Our work invites researchers to move beyond the image of infrastructure built “ex nihilo” or on so-called “virgin” sites and a narrative limited to the period of the “Trente Glorieuses” to reveal the dynamics of how a territory transforms over time.…”
    Get full text
    Article
  10. 430

    Comparison of numerical model, neural intelligent and GeoStatistical in estimating groundwater table by Maryam Bayatvarkeshi, Rojin Fasihi

    Published 2018-03-01
    “…Moreover, in the neural intelligent models were applied latitude, longitude and altitude as available variables in input models. The zoning results of groundwater table indicated that the decreased trend of groundwater table was from the west to the east of aquifer which was in line with the hydraulic gradient.…”
    Get full text
    Article
  11. 431

    Evaluation of suitability areas for ecotourism using multi-criteria analysis by Radmila Jovanovic, Fernando Almeida García, Rafael Cortés-Macías

    Published 2022-04-01
    “…The basic analysis of this study is to identify potential locations for ecotourism activities in the wine region of Central Serbia based on physical-geographical elements (topography, altitude, slope, land use / coverage, diversity, distance from rivers) and socio-economic data (proximity to tourist attractions, distance from major roads and places). …”
    Get full text
    Article
  12. 432

    Study on Helicopter Antitorque Device Based on Cross-Flow Fan Technology by Du Siliang, Tang Zhengfei, Xu Pei, Ji Mengjiang

    Published 2016-01-01
    “…In order to improve low-altitude flight security of single-rotor helicopter, an experimental model of a helicopter antitorque device is developed for wind tunnel test. …”
    Get full text
    Article
  13. 433

    A Framework to Estimate Local Atmospheric Densities With Reduced Drag‐Coefficient Biases by Vishal Ray, Daniel J. Scheeres, Suood Alnaqbi, W. Kent Tobiska, Siamak G. Hesar

    Published 2022-03-01
    “…The method is tested with synthetic data for different geomagnetic activities, altitude levels, and errors in the gas‐surface interaction parameters. …”
    Get full text
    Article
  14. 434

    A morfometria da bacia hidrográfica do rio Mimoso, um sistema cárstico do Mato Grosso do Sul/ Brasil by Rafael Brugnolli Medeiros, André Geraldo Berezuk, Charlei Aparecido da Silva

    Published 2019-05-01
    “…The methodology also consisted of conferences of the information obtained in in situ maps, from the inclinations and the length and altitude of the terrain ramps. The results pointed to a significant diversity of slope classes, horizontal and vertical dissections, evidencing the potential erosive energy of the study area that runs from the very weak to moderately average classes in the high and low BHRM courses due to the slopes and reduced altimetric amplitudes . …”
    Get full text
    Article
  15. 435

    Natural hazards and urban policies in Mexico City by François Mancebo

    Published 2007-06-01
    “…Mexico City is located at an altitude of over 2 000 metres where it occupies an attractive but hazardous site hemmed in by the Sierra Madre and volcanic mountain ranges.The site is one of the most disaster-prone locations in the world, threatened by a combination of natural hazards, poorly controlled technological hazards created by the city’s heavy industry, pollution – particularly air pollution and diminishing local resources, the most seriously threatened being water. …”
    Get full text
    Article
  16. 436

    A Novel Technique to Compute the Revisit Time of Satellites and Its Application in Remote Sensing Satellite Optimization Design by Xin Luo, Maocai Wang, Guangming Dai, Xiaoyu Chen

    Published 2017-01-01
    “…When the side-lap, the range of altitude, and desired revisit time are determined, a lot of orbit solutions which meet the mission requirements will be obtained fast. …”
    Get full text
    Article
  17. 437

    Association Between Deforestation and the Incidence of Snakebites in South Korea by Seoheui Lee, Junyeong Lee, Kyung-Duk Min

    Published 2025-01-01
    “…Additional covariates included altitude, average temperature, population size, proportion of urban land cover, proportion of agricultural land cover, and level of ecological preservation. …”
    Get full text
    Article
  18. 438

    Spatial Analysis of thunder storm in Iran by ghasem azizi, leyla sharifi

    Published 2017-12-01
    “…In order to better understand the effect of Thunder hurricanes from altitude and latitude using Curve Expert software, seasonal and annual charts, along with the correlation of each production, were analyzed. …”
    Get full text
    Article
  19. 439

    Paysages du maïs au Mexique by Hugo Perales

    Published 2021-11-01
    “…Several of the main factors that determine the presence of traditional maize varieties in the landscape are described, among which the altitude, the quality of the agricultural land, the quality of grains and seeds’ flow. …”
    Get full text
    Article
  20. 440

    An Empirical Model of the Sporadic E Layer Intensity Based on COSMIC Radio Occultation Observations by Jun Niu, Han‐xian Fang

    Published 2023-01-01
    “…Abstract Ionospheric sporadic E layers are common phenomena occurring in the ionospheric E region altitude (∼90–120 km) with much higher electron density. …”
    Get full text
    Article