Essays about: "digital surface models"

Showing result 16 - 20 of 45 essays containing the words digital surface models.

1. 16. Direct multispectral photogrammetry for UAV-based snow depth measurements

   University essay from KTH/Geoinformatik

   Author : Kathrin Maier; [2019]
   Keywords : Unmanned Aerial Vehicles UAV ; snow depth; direct photogrammetry; multispectral imagery; cryosphere;

   Abstract : Due to the changing climate and inherent atypically occurring meteorological events in the Arctic regions, more accurate snow quality predictions are needed in order to support the Sámi reindeer herding communities in northern Sweden that struggle to adapt to the rapidly changing Arctic climate. Spatial snow depth distribution is a crucial parameter not only to assess snow quality but also for multiple environmental research and social land use purposes. READ MORE

3. 17. Beavers and environmental flow : the contribution of beaver dams to flood and drought prevention

   University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

   Author : Wali Uz Zaman; [2019]
   Keywords : beaver dam; beaver pond; environmental flow; flood; drought; GIS;

   Abstract : Before they were driven to near extinction, beavers populated the smaller rivers in Europe, Asia and North America. They are ecosystem engineers, since their dam building activities have a cascading effect on biogeochemistry, hydrology, ecosystem structure as well as biodiversity of the affected and surrounding area. READ MORE

4. 18. Paleoglaciological study of the Ahlmannryggen, Borgmassivet and Kirwanveggen nunatak ranges, Dronning Maud Land, East Antarctica, using WorldView imagery

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Elena Serra; [2017]
   Keywords : ;

   Abstract : Paleoglaciological reconstructions based on glacial geological and geomorphological evidence areused to constrain and test numerical models of ice sheet extent and dynamics. The MAGIC-DMLresearch project (“Mapping, Measuring and Modelling Antarctic Geomorphology and Ice Change, inDronning Maud Land”) is trying to reconstruct the timing and pattern of ice surface elevation changessince the mid-Pliocene across western Dronning Maud Land, East Antarctica. READ MORE

5. 19. Digital hydraulics in aircraft control surface actuation : Modelling and evaluation of digital hydraulic systems with focus on performance and energy efficiency

   University essay from Linköpings universitet/Fluida och mekatroniska system

   Author : Simon Ward; [2017]
   Keywords : dha; digital hydraulics; hydraulics; aircraft; actuation; aircraft actuation;

   Abstract : The purpose of this thesis has been to compare and analyse the use of digital hydraulic actuators in place of traditional actuators in aircraft control surface manipulation. Digital hydraulic actuator referring to a hydraulic actuator where the power has been discretized using discrete on/off-valves. READ MORE

6. 20. Virtuella landskap : en diskussion om VR‐modellen som representationsform i planering och gestaltning av framtida landskap

   University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

   Author : Marcus Ekström; [2017]
   Keywords : inneslutande virtuell verklighet; visualisering; kommunikation; flerdimensionalitet; modell; planering och gestaltning;

   Abstract : Den inneslutande virtuella verkligheten, en digital värld utan fysiska begränsningar, har utgjort kärnan i denna uppsats då VR-modellens plats som representationsmetod i landskapsarkitektur har diskuterats. Diskussionen behandlar även visualisering, en av de mer traditionella representationsmetoderna, som tar form genom skisser, sektioner, planer, perspektiv och modeller. READ MORE