Results 21 to 30 of about 190 (76)

Medium-Scale UAVs: A Practical Control System Considering Aerodynamics Analysis

Drones, 2022
Unmanned aerial vehicles (UAVs) have drawn significant attention from researchers over the last decade due to their wide range of possible uses. Carrying massive payloads concurrent with light UAVs has broadened the aeronautics context, which is feasible
Mohammad Sadeq Ale Isaac, Marco Andrés Luna, Ahmed Refaat Ragab, Mohammad Mehdi Ale Eshagh Khoeini, Rupal Kalra, Pascual Campoy, Pablo Flores Peña, Martin Molina   +7 more
doaj   +1 more source

Refined GEDI Level-2A Database Construction: Focused on Gyeonggi Province, Republic of Korea [PDF]

Geo Data
The Global Ecosystem Dynamics Investigation (GEDI), a full-waveform light detection and ranging system, translated the energy into a continuous waveform and recorded the signals chronologically for enabling geometric analysis of the vertical structure of
Kyeong-Hun Cho, Seung-Kuk Lee
doaj   +1 more source

Robot-assisted urological tumor surgery using the MP1000 system: A prospective, single-center, single-arm clinical study

Current Urology
Objectives:. This study is aimed to evaluate the safety and efficacy of the MP1000 robotic system in urological tumor surgery. Materials and methods:.
Mingxin Diao, Wenzhi Gao, Kunlin Yang, Yaming Gu, Zhihua Li, Xinfei Li, Zihui Gao, Xuesong Li, Zheng Zhang   +8 more
doaj   +1 more source

Evaluation of the Earth Systems Research Laboratory's global Observing System Simulation Experiment system [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2013
An Observing System Simulation Experiment (OSSE) system has been implemented at the National Oceanographic and Atmospheric Administration Earth Systems Research Laboratory in the US as part of an international Joint OSSE effort.
Nikki C. Privé, Yuanfu Xie, John S. Woollen, Steven E. Koch, Robert Atlas, Robbie E. Hood   +5 more
doaj   +1 more source

Power Contingency/Margin Methodology and Operational Envelope Analysis for PlanarSats

Aerospace
This paper presents a power-centric systems-engineering approach for PlanarSats and for atto-, and femto-class spacecraft where surface-limited power dominates design.
Mehmet Şevket Uludağ, Alim Rüstem Aslan   +1 more
doaj   +1 more source

Drag Reduction by Laminar Flow Control

Energies, 2018
The Energy System Transition in Aviation research project of the Aeronautics Research Center Niedersachsen (NFL) searches for potentially game-changing technologies to reduce the carbon footprint of aviation by promoting and enabling new propulsion and ...
Nils Beck, Tim Landa, Arne Seitz, Loek Boermans, Yaolong Liu, Rolf Radespiel   +5 more
doaj   +1 more source

Observational Needs for Improving Ocean and Coupled Reanalysis, S2S Prediction, and Decadal Prediction

Frontiers in Marine Science, 2019
Developments in observing system technologies and ocean data assimilation (DA) are symbiotic. New observation types lead to new DA methods and new DA methods, such as coupled DA, can change the value of existing observations or indicate where new ...
Stephen G. Penny, Santha Akella, Magdalena A. Balmaseda, Philip Browne, James A. Carton, Matthieu Chevallier, Francois Counillon, Catia Domingues, Sergey Frolov, Patrick Heimbach, Patrick Hogan, Ibrahim Hoteit, Doroteaciro Iovino, Patrick Laloyaux, Matthew J. Martin, Simona Masina, Andrew M. Moore, Patricia de Rosnay, Dinand Schepers, Bernadette M. Sloyan, Andrea Storto, Aneesh Subramanian, SungHyun Nam, Frederic Vitart, Chunxue Yang, Yosuke Fujii, Hao Zuo, Terry O’Kane, Paul Sandery, Thomas Moore, Christopher C. Chapman   +30 more
doaj   +1 more source

Evaluating System Usability, Workload Suitability, and User Experience of Game-Based Virtual Reality in Spaceflight Education and Training

Journal of Aviation/Aerospace Education & Research, 2023
Game-based instruction and immersive virtual reality are enhanced pedagogical methods beneficial in training environments involving complex disciplines, ranging from medical applications to construction engineering technology. This study investigated the
Lana Laskey, Joseph R. Keebler
doaj   +1 more source

An Ensemble Mean and Evaluation of Third Generation Global Climate Reanalysis Models

Atmosphere, 2018
We have produced a global ensemble mean of the four third-generation climate reanalysis models for the years 1981–2010. The reanalysis system models used in this study are National Centers for Environmental Prediction (NCEP) Climate Forecast System
Jeffrey D. Auger, Sean D. Birkel, Kirk A. Maasch, Paul A. Mayewski, Keah C. Schuenemann   +4 more
doaj   +1 more source

BPANS: A Turbulence Model That Spans the Speed Range from Subsonic to Supersonic Flows

Aerospace
Unsteady turbulent flows are present in most engineering applications of practical relevance. In aeronautics, these applications span the speed range from subsonic to hypersonic flows.
Gabriel Nastac, Noah Schwalb, Abdelkader Frendi   +2 more
doaj   +1 more source