Results 31 to 40 of about 75,077 (193)

Smoke spread process under different heights based on numerical simulation

open access: yesCase Studies in Thermal Engineering, 2020
Fire alarm system relates the safety of people's life and property when the fire occurs in high-rise buildings. The characteristic of the smoke spread process in the fire is a crucial problem for design of the fire alarm system.
Ruifang Wang, Xiaoyu Lan, Lei Xu
doaj   +1 more source

Machine Learning Modeling of Horizontal Photovoltaics Using Weather and Location Data

open access: yesEnergies, 2020
Solar energy is a key renewable energy source; however, its intermittent nature and potential for use in distributed systems make power prediction an important aspect of grid integration. This research analyzed a variety of machine learning techniques to
Christil Pasion   +5 more
doaj   +1 more source

Iterative multilinear optimization for planar model fitting under geometric constraints [PDF]

open access: yesPeerJ Computer Science, 2021
Planes are the core geometric models present everywhere in the three-dimensional real world. There are many examples of manual constructions based on planar patches: facades, corridors, packages, boxes, etc.
Jorge Azorin-Lopez   +4 more
doaj   +2 more sources

Mobile Robot Self-Localization with 2D Push-Broom LIDAR in a 2D Map [PDF]

open access: yes, 2020
This paper proposes mobile robot self-localization based on an onboard 2D push-broom (or tilted-down) LIDAR using a reference 2D map previously obtained with a 2D horizontal LIDAR.
Clotet Bellmunt, Eduard   +3 more
core   +1 more source

New observations of NO2 in the upper troposphere from TROPOMI [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
Nitrogen oxides (NOx≡NO+NO2) in the NOx-limited upper troposphere (UT) are long-lived and so have a large influence on the oxidizing capacity of the troposphere and formation of the greenhouse gas ozone.
E. A. Marais   +19 more
doaj   +1 more source

Pairwise Coarse Registration of Indoor Point Clouds Using 2D Line Features

open access: yesISPRS International Journal of Geo-Information, 2021
Registration is essential for terrestrial LiDAR (light detection and ranging) scanning point clouds. The registration of indoor point clouds is especially challenging due to the occlusion and self-similarity of indoor structures.
Zhen Li   +3 more
doaj   +1 more source

EXPRESS MONITORING OF THE MAIN PARAMETERS OF CLOUDS FROM THE EARTH’S SURFACE

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives The paper proposes a technique that allows the main types of clouds and cloud cover parameters (ceiling, direction and speed of cloud movement) to be determined at minimum cost via observations from the Earth’s surface.
A. G. Yakunin
doaj   +1 more source

Performance-Based Navigation Approach Procedures with Barometric Vertical Guidance: How to Select the Air Temperature for Approach Procedure Design

open access: yesAerospace, 2023
In performance-based navigation (PBN) procedures with barometric vertical guidance, the effective vertical path angle (VPA) depends on the actual air temperature at the time of approach execution. A very low design temperature could result in an obstacle
Luis Pérez Sanz   +5 more
doaj   +1 more source

Point clouds segmentation as base for as-built BIM creation [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
In this paper, a three steps segmentation approach is proposed in order to create 3D models from point clouds acquired by TLS inside buildings. The three scales of segmentation are floors, rooms and planes composing the rooms.
H. Macher, T. Landes, P. Grussenmeyer
doaj   +1 more source

Harmonization of Meteosat First and Second Generation Datasets for Fog and Low Stratus Studies

open access: yesRemote Sensing, 2023
Operational weather satellites, dating back to 1970s, currently provide the best basis for climatological investigations, such as an analysis of changes in the cloud cover.
Sheetabh Gaurav   +3 more
doaj   +1 more source

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