Results 31 to 40 of about 244,404 (292)

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

Computing the set of Epsilon-efficient solutions in multiobjective space mission design [PDF]

, 2011
In this work, we consider multiobjective space mission design problems. We will start from the need, from a practical point of view, to consider in addition to the (Pareto) optimal solutions also nearly optimal ones.
Carlos A. Coello Coello, Coello Coello C. A., Deb K., Deb K., Goldberg D. E., Izzo D., Massimiliano Vasile, Oliver Schutze, Pareto V., Petropoulos Longuski A. E., Schütze O., Vasile M.   +11 more
core   +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

Exploring the Environmental Conditions of Snow Particles Using Spaceborne Triple-Frequency Radar Measurements over Ocean

Remote Sensing, 2022
The environmental conditions of snow particles with different particle sizes and bulk effective densities over the ocean are explored using a coincidence dataset of National Aeronautics and Space Administration (NASA) CloudSat Cloud Profiling Radar (CPR)
Mengtao Yin, Cheng Yuan
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

Experimental Flow Investigation of a Truncated Ideal Contour Nozzle [PDF]

, 2006
Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR.
Stark, Ralf, Wagner, Bernd
core   +1 more source

Numerical 3D study on the influence of spanwise distribution of tubercles on wings for UAV applications [PDF]

MATEC Web of Conferences, 2019
In this work, a 3D numerical study on the influence of the spanwise distribution of tubercles for UAV applications is presented. The idea of using tubercles in aeronautics comes from the humpback whale (Megaptera novaeangliae) which has a characteristic ...
Papadopoulos Charalampos, Katsiadramis Vasilis, Yakinthos Kyros   +2 more
doaj   +1 more source

Accidents and injuries related to paragliding on mount Babadağ, Turkey: A cross-sectional study

Turkish Journal of Emergency Medicine, 2023
OBJECTIVES: In light of the growing popularity of paragliding, this cross-sectional study aimed to investigate the epidemiology of paragliding accidents, providing insights into the types and severity of injuries sustained as well as the body regions ...
Ömer Faruk Karakoyun, Yalcin Golcuk
doaj   +1 more source

Evaluating the Rationale for Folding Wing Tips Comparing the Exergy and Breguet Approaches [PDF]

, 2017
The design and development processes for future aircraft aims to address the environmental and efficiency challenges needed to facilitate the engineering of concepts that are far more integrated and require a multidisciplinary approach.
Hayes, D., Lone, M. Mudassir, Whidborne, James F.   +2 more
core   +1 more source