The three-dimensional (3-D) structure of forests, especially the vertical structure, is an important parameter of forest ecosystem modeling for monitoring ecological change. Synthetic aperture radar tomography (TomoSAR) provides scene reflectivity estimation of vegetation along elevation coordinates. Due to the advantages of super-resolution imaging and a small number of measurements, distribut...

Forest modeling applications that cover large geographic areas can benefit from the use of widely-held knowledge about relationships between forest attributes and topographic variables. A noteworthy example involves the coupling of field survey data from the Forest Inventory Analysis (FIA) program of USDA Forest Service with digital elevation model (DEM) data in attempts to explain how topograp...

Segmentation and classification of 3D urban point clouds is a complex task, making it very difficult for any single method to overcome all the diverse challenges offered. This sometimes requires the combination of several techniques to obtain the desired results for different applications. This work presents and compares two different approaches for segmenting and classifying 3D urban point clo...

Pollen, charcoal, magnetic susceptibility, and bulk density data provide the first paleoecological record spanning the last 33,000 years from the western cordillera of the Peruvian Andes. Sparse super-puna vegetation existed before 30,000 cal yr B.P. around Lake Compuerta (3950 m elevation), prior to a sedimentary hiatus that lasted until c. 16,200 cal yr B.P. When sedimentation resumed, a glac...

The study of digital elevation model (DEM) super-resolution reconstruction algorithms has solved the problem need for high-resolution DEMs. However, DEM algorithm itself is an inverse problem, and making full use a priori information effective way to solve this problem. In our work, new method proposed based on complementary relationship between internally learned methods externally methods. pr...

To investigate the toppling displacement evolution characteristics of anti-dip rock slopes, Xiaodongcao-Zhengjiadagou bank slope is taken as an engineering case, and firstly, geological geometric distribution are obtained by superimposing lithology, slope, elevation raster layers through ArcGIS, partition with largest area Lower Triassic Daye Formation, bottom elevation, medium slope; based on ...

This study aims to measure the water potential of Pahambur Wai River, in Nggongi Village, Karera District, East Sumba Regency be used as a driving source for Micro Hydro Power Plants.This Plants. The research methods are observation, area mapping, measurement flow and elevation, calculation electric power generated, Detail Engineering Design, cost economic feasibility.From analysis calculation,...

Super-span (20 m) non-prestressed T-section reinforced concrete beams have been in service for more than 30 years and are common Chinese highway bridges. However, the actual performance of these super-span (RC) that with FRP, including their process failure from a state to state, has not determined. In this study, original RC T-beams, 20 m span retrofitted were taken bridge. Their flexural was ...