نتایج جستجو برای: height observations from ground
تعداد نتایج: 5841205 فیلتر نتایج به سال:
This paper explores the first author’s experience of surviving a fall from height, as preparation for small-scale phenomenological study with other survivors. In May 2018, I fell 20 ft (6.1m) mountain path and sustained multiple serious injuries. By exploring using Interpretative Phenomenological Analysis, was able to gain deeper understanding trauma surrounding itself, reflect on sharing perso...
Aims and background: Jumping and landing are common exercises in sports activities which are associated with injury of the anterior cruciate ligament. The purpose of this study was to investigate the effect of using a knee brace on peak ground reaction forces amplitudes, vertical loading rate, impulses in three dimensions and peak free moment values during landing in athletes with anterior cr...
Synthetic Aperture Radar (SAR) three dimensional image provides the scene reflectivity along azimuth, range and elevation coordinates. This 3-D image is formed from acquisition of multiple signals from different orbits. Tomographic reconstruction of this image gives the vertical information of the object present in the data. Polarization Coherence Tomography (PCT) is used for estimation of vert...
The main British population of Gortyna borelii occurs on the north Essex coast, on sites very close to sea level. During 1999, 2000 and 2001, ovipositing strategies of G. borelii were studied providing details of egg laying behaviour, preferred oviposition host plants, height of ova deposition and distance of the oviposition site from the nearest larval food plant (Peucedanum officinale). Six o...
The relationship between satellites observed aerosol optical depth to PM2.5 at surface is important to monitor and quantify the air pollution at ground from satellite observations which is relatively more independent and has less artificial errors than groundbased measurements. However, the physical connection between AOD and PM2.5 is relatively indirect and weak thus can be affected by multipl...
The relationship between satellites observed aerosol optical depth to PM2.5 at surface is important to monitor and quantify the air pollution at ground from satellite observations which is relatively more independent and has less artificial errors than groundbased measurements. However, the physical connection between AOD and PM2.5 is relatively indirect and weak thus can be affected by multipl...
In order to Study the quality of diameter at breast height distribution, height and height till the beginning of the crown of Oak trees in un-even aged stands from the collected data of the forestation plan in Shanderman Siyahkesh Guilan province, 367 trees were randomly selected as samples and the diameter, height and the height till the beginning of the crown were analyzed. According to the...
7 Lidar remote sensing from three platforms – ground, airborne, and spaceborne – has 8 the capability to acquire direct three-dimensional measurements of the forest canopy that 9 are useful for estimating a variety of forest inventory parameters, including tree height, 10 volume, and biomass, and also for deriving useful information for characterizing wildlife 11 habitat or forest fuels. 12 The...
Usually, filtering is performed in order to extract a ground surface from laser points obtained with the airborne laser scanner. It mainly removes the laser points that were measured as trees surface. However, in the dense forest where trees are grown thick, we can see the part of the laser points has not reached to the ground surface. If it conducted the filtering that sorts out the laser poin...
This study uses the backscattered intensity information from SAR images acquired with TerraSAR-X to derive Digital Surface Models with radargrammetry. Then the known ground elevation (from airborne lidar) is subtracted to get Canopy Height Models that are analysed and linked through regression analysis to the forest variables above-ground biomass and tree height. It was found, that the used con...
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