Results 91 to 100 of about 223,735 (247)

Piloted simulation of a ground-based time-control concept for air traffic control [PDF]

A concept for aiding air traffic controllers in efficiently spacing traffic and meeting scheduled arrival times at a metering fix was developed and tested in a real time simulation. The automation aid, referred to as the ground based 4-D descent advisor (
Davis, Thomas J., Green, Steven M.
core   +1 more source

Evaluating machine‐learning models for wind‐speed downscaling from ECMWF‐IFS data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We benchmark recent machine‐learning methods for downscaling wind speeds from a low‐resolution 9‐km model input to 1‐km predictions. We include recent super‐resolution approaches and transformer‐based architectures and propose Windflow‐SRnet. The models are trained with input data from the ECMWF‐IFS numerical weather model to predict label data from ...
William Ericson, Florian Achermann, Nicholas Lawrance, Julie Villinger, Olov Andersson, Roland Siegwart   +5 more
wiley   +1 more source

INVESTIGATION OF THE VISUAL BOUNDARY FOR IMMEDIATE PERCEPTION OF VERTICAL RATE OF DESCENT [PDF]

Visual boundary for human perception of vertical rate of ...
Assadourian, A., Lina, L. J.
core   +1 more source

Classification of Fog Life‐Cycle Phases Using Ground‐Based and Satellite‐Based Observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this study, the life‐cycle phases of radiation fog events—formation, maturity, and dissipation—are automatically classified at a ground station in Southwest Germany based on visibility trends and thresholds. We demonstrate that visibility detects radiation fog phases effectively, while its combination with ceilometer data can detect the life‐cycle ...
Maria Laura Pinilla, Eva Pauli, Johannes Antenor Senn, Jan Cermak   +3 more
wiley   +1 more source

Safety Considerations in Deployment of Robotic Systems – A Systematic Review

Journal of Field Robotics, EarlyView.
ABSTRACT An in‐depth understanding of the risks related to robotic systems is crucial to guarantee safety throughout all stages of robot design and operations. This required a thorough risk assessment following international standards. This study presents a systematic review of previous research on safety considerations in the design of robotic systems,
Adedire D. Adesiji, Segun E. Ibitoye, Rasheedat M. Mahamood, Olalekan A. Olayemi, Peter O. Omoniyi, Tien‐Chien Jen, Esther T. Akinlabi   +6 more
wiley   +1 more source

Advancing the mapping of vegetation structure in savannas using Sentinel‐1 imagery

Remote Sensing in Ecology and Conservation, EarlyView.
As vegetation structure monitoring is important for the understanding and conservation of savanna ecosystems, we explored the utility of C‐band synthetic aperture radar imagery for mapping both grassland and woody vegetation structure in the Greater Serengeti‐Mara Ecosystem.
Vera Thijssen, Marianthi Tangili, Ruth A. Howison, Han Olff   +3 more
wiley   +1 more source

Analysis of Meteorological Data Obtained During Flight in a Supercooled Stratiform Cloud of High Liquid-Water Content [PDF]

Flight icing-rate data obtained in a dense and. abnormally deep supercooled stratiform cloud system indicated the existence of liquid-water contents generally exceeding values in amount and extent previously reported over the midwestern sections of the ...
Kline, Dwight B., Perkins, Porter J.
core   +1 more source

ECOSTRESS‐derived semi‐arid forest temperature and evapotranspiration estimates demonstrate drought and thinning impacts

Remote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that ECOSTRESS lands surface temperature (LST) data are sensitive to forest thinning, regional drought, and their interaction. Consistent with high‐resolution UAV images, ECOSTRESS LST data indicate thinned forest had significantly greater temperature across years.
Temuulen Tsagaan Sankey, Thu Ya Kyaw, Julia Tatum, George W. Koch, Thomas Kolb, Rayni Lewis, Helen M. Poulos, Andrew M. Barton, Blase LaSala, Andrea Thode   +9 more
wiley   +1 more source

Investigation of Anti-Phase Asymmetric Quiet Rotor Technology [PDF]

The future of urban air mobility has a well-known tall pole challenge in the form of community acceptance which largely comes from the noise. This paper presents a proposed anti-phase rotor technology that could reduce noise sources such as blade vortex ...
Cramer, Nicholas B., Hernandez, Sarah R., Nguyen, Nhan T., Storms, Bruce L.   +3 more
core   +1 more source

Examining the Affordances of Engineering and Curricular Supports for Learning Among Emerging Bilingual Elementary Afterschool Students

Science Education, EarlyView.
ABSTRACT Engineering design provides students with unique opportunities to engage with disciplinary knowledge and practices by engaging with technologies and each other through the design process. In this paper, we identify how the co‐construction of an engineering afterschool club culture supported students’ engagement in epistemic practices of ...
Kathryn M. Bateman, Gregory J. Kelly, Peter R. Licona, Christine M. Cunningham   +3 more
wiley   +1 more source