Atmospheric Visibility and Cloud Ceiling Predictions With Hybrid IIS-LSTM Integrated Model: Case Studies for Fiji’s Aviation Industry [PDF]
IEEE AccessAtmospheric visibility and cloud ceiling forecasts are essential for the safety and efficiency of flight operations and the aviation industry. Routine hourly aviation meteorological observations are recorded at every airport.
Shiveel Raj +5 more
doaj +5 more sources
The Performance of Commonly Used Surface-Based Instruments for Measuring Visibility, Cloud Ceiling, and Humidity at Cold Lake, Alberta [PDF]
Remote Sensing, 2021 Data from automated meteorological instruments are used for model validation and aviation applications, but their measurement accuracy has not being adequately tested.
Faisal S. Boudala +2 more
doaj +4 more sources
Indoor localisation and location tracking in indoor facilities based on LiDAR point clouds and images of the ceilings [PDF]
AGILE: GIScience Series, 2023 Abstract. Localisation and navigation technologies have vastly evolved during the last years, facilitating users’ guidance in various environments. Unlike outdoor environments where GNSS comprises a universal solution, in indoor environments various localisation techniques have been used, each one with its drawbacks.
Ioannis Dardavesis +2 more
openaire +5 more sources
Evidence for a Rising Cloud Ceiling in Eastern North America* [PDF]
Journal of Climate, 2003 Abstract Data from 24 airport weather stations along the north–south axis (35°–45°N) of the Appalachian Mountains are used to show a significant rising trend in cloud-ceiling height over the past three decades. The mean change in cloud-ceiling height was 4.14 ± 1.03 m yr−1 [mean ± 1 SE (standard error), p ≤ 0.001] across all stations.
Andrew D. Richardson +3 more
openaire +2 more sources
Ceiling Equipment Extraction from TLS Point Clouds for Reflected Ceiling Plan Creation
International Journal of Automation TechnologyThe reflected ceiling plan (RCP) is a two-dimensional drawing of facilities with ceiling equipment, such as lighting, fire alarms, sprinklers, and inspection holes. The RCP is often created from existing facilities for safety standard verification, renovation, and inspection.
Riho Akiyama +3 more
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Changes in Cloud-Ceiling Heights and Frequencies over the United States since the Early 1950s [PDF]
Journal of Climate, 2007 Abstract U.S. weather stations operated by NOAA’s National Weather Service (NWS) have undergone significant changes in reporting and measuring cloud ceilings. Stations operated by the Department of Defense have maintained more consistent reporting practices.
Bomin Sun +2 more
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Detection of Walls, Floors, and Ceilings in Point Cloud Data [PDF]
Construction Research Congress 2016, 2016 This is the author accepted manuscript. The final version is available from the American Society of Civil Engineers via http://dx.doi.org/10.1061/9780784479827 ...
Anagnostopoulos, Ioannis +3 more
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Hierarchical nondestructive detection of full‐scene suspended ceiling systems using point cloud [PDF]
Computer-Aided Civil and Infrastructure EngineeringAbstract Suspended ceiling (SC) systems constitute a critical nonstructural building component. Excessive deformation of the ceiling surface can cause life‐threatening falling debris during earthquakes and create voids that may expose occupants to hazardous materials concealed above the ceiling.
Qinghua Guo +3 more
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Journal of Applied Meteorology, 1999 Experiments are described that provide an example of the baseline skill level for the numerical prediction of cloud ceiling and visibility, where application to aviation-system safety and efficiency is emphasized. Model simulations of a light, mixed-phase, East Coast precipitation event are employed to assess ceiling and visibility predictive skill ...
Mark T. Stoelinga, Thomas T. Warner
openaire +2 more sources
A Specialized Pipeline for Efficient and Reliable 3D Semantic Model Reconstruction of Buildings from Indoor Point Clouds [PDF]
Journal of ImagingRecent advances in laser scanning systems have enabled the acquisition of 3D point cloud representations of scenes, revolutionizing the fields of Architecture, Engineering, and Construction (AEC).
Cedrique Fotsing +4 more
doaj +2 more sources