Results 101 to 110 of about 1,513,863 (295)

Canopy structural modeling using object-oriented image classification and laser scanning [PDF]

, 2008
A terrestrial laser scanning (TLS) experiment was carried out in the EAGLE 2006 campaign to characterize and model the canopy structure of the Speulderbos forest. Semi-variogram analysis was used to describe spatial variability of the surface.
Dost, R., Laake, P. van, Timmermans, J., Vekerdy, Zoltán   +3 more
core  

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

High-Resolution Airborne UAV Imagery to Assess Olive Tree Crown Parameters Using 3D Photo Reconstruction: Application in Breeding Trials

Remote Sensing, 2015
The development of reliable methods for the estimation of crown architecture parameters is a key issue for the quantitative evaluation of tree crop adaptation to environment conditions and/or growing system.
Ramón A. Díaz-Varela, Raúl de la Rosa, Lorenzo León, Pablo J. Zarco-Tejada   +3 more
doaj   +1 more source

Machine Learning-Based Air-to-Ground Channel Model Selection Method for UAV Communications Using Digital Surface Model Data. [PDF]

Sensors (Basel), 2022
Kang YE, Jung YH.
europepmc   +1 more source

Using Magnetic Activity and Galactic Dynamics to Constrain the Ages of M Dwarfs

, 2008
We present a study of the dynamics and magnetic activity of M dwarfs using the largest spectroscopic sample of low-mass stars ever assembled. The age at which strong surface magnetic activity (as traced by H-alpha) ceases in M dwarfs has been inferred to
Adam J. Burgasser, Andrew A. West, Chabrier, Delfosse, John J. Bochanski, Kevin R. Covey, Nordström, Ossendrijver, Pizzolato, Siebert, Suzanne L. Hawley, Wielen   +11 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Using Unmanned Aerial Vehicles (UAV) for High-Resolution Reconstruction of Topography: The Structure from Motion Approach on Coastal Environments

Remote Sensing, 2013
The availability of high-resolution Digital Surface Models of coastal environments is of increasing interest for scientists involved in the study of the coastal system processes. Among the range of terrestrial and aerial methods available to produce such
Francesco Mancini, Marco Dubbini, Mario Gattelli, Francesco Stecchi, Stefano Fabbri, Giovanni Gabbianelli   +5 more
doaj   +1 more source

Journal Staff [PDF]

, 2014
The usage of 3D-modeling is expanding rapidly. Modeling from aerial imagery has become very popular due to its increasing number of both civilian and mili- tary applications like urban planning, navigation and target acquisition.
Ringqvist, Sanna
core   +1 more source

Distribution of Dust around Galaxies: An Analytic Model

, 2012
We develop an analytic halo model for the distribution of dust around galaxies. The model results are compared with the observed surface dust density profile measured through reddening of background quasars in the Sloan Digital Sky Survey (SDSS) reported
Aguirre, Amblard, Bartelmann, Behroozi, Bianchi, Bryan, Chelouche, Cooray, Hayashi, Inoue, Komatsu, Leauthaud, Lewis, Mandelbaum, Masaki, McGee, Ménard, Ménard, Naoki Yoshida, Navarro, Seljak, Sheldon, Sheth, Shogo Masaki, Takeuchi, Viero, York, Zu   +27 more
core   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source