Results 11 to 20 of about 27,429 (307)

Extracting Plastic Greenhouses from Remote Sensing Images with a Novel U-FDS Net

open access: yesRemote Sensing, 2023
The fast and accurate extraction of plastic greenhouses over large areas is important for environmental and agricultural management. Traditional spectral index methods and object-based methods can suffer from poor transferability or high computational ...
Yan Mo, Wanting Zhou, Wei Chen
doaj   +1 more source

Fans For Greenhouses

open access: yesEDIS, 2018
Fans are used in processing applications involved with drying, ventilating, heating, cooling, aspirating, elevating, and conveying. Processing and other agricultural activities requiring fans are greatly increasing.
D. E. Buffington   +3 more
doaj   +3 more sources

Wind Loads on Single-span Plastic Greenhouses and Solar Greenhouses [PDF]

open access: yesHortTechnology, 2013
Wind tunnel tests were conducted in an NH-2-type wind tunnel to investigate the wind pressure coefficients and their distribution on the surfaces of a single-span plastic greenhouse and a solar greenhouse. Wind pressures at numerous points on the surfaces of the greenhouse models were simultaneously measured for various wind ...
Zai Q. Yang   +4 more
openaire   +1 more source

PLASTIC AND GLASS GREENHOUSES DETECTION AND DELINEATION FROM WORLDVIEW-2 SATELLITE IMAGERY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Greenhouse detection using remote sensing technologies is an important research area for yield estimation, sustainable development, urban and rural planning and management.
D. Koc-San   +3 more
doaj   +1 more source

History of Controlled Environment Horticulture: Greenhouses

open access: yesHortScience, 2022
Modern greenhouses are intensive farming systems designed to achieve high efficiency and productivity. Plants are produced year-round in greenhouses by maintaining the environment at or near optimum levels regardless of extreme weather conditions.
Krishna Nemali
doaj   +1 more source

Effects of Uplift Resistance on Continuous-Pipe-Foundation of Single-Span Plastic Greenhouse by Steel Plate Pipe Connector

open access: yesAgriculture, 2022
The single-span plastic greenhouses are affected by strong winds which generate uplift resistance causing the bending of members, damage to protective films, and damage to crops.
Myeonghwan Kim
doaj   +1 more source

Object-Based Greenhouse Classification from GeoEye-1 and WorldView-2 Stereo Imagery [PDF]

open access: yes, 2014
Remote sensing technologies have been commonly used to perform greenhouse detection and mapping. In this research, stereo pairs acquired by very high-resolution optical satellites GeoEye-1 (GE1) and WorldView-2 (WV2) have been utilized to carry out the ...
Aguilar Torres, Fernando José   +3 more
core   +3 more sources

Study on the Cooling Effect of Double-Layer Spray Greenhouse

open access: yesAgriculture, 2023
Greenhouses provide suitable environmental conditions for plant growth. Double-layer plastic greenhouses are often used in many regions to ensure normal crop growth during winter since single-layer plastic greenhouses have poor insulation.
Jihang Xu   +10 more
doaj   +1 more source

Characteristics of Plastic Greenhouse High-Temperature and High-Humidity Events and Their Impacts on Facility Tomatoes Growth

open access: yesFrontiers in Earth Science, 2022
Because of their relatively simple structures, plastic greenhouses in southern China have poor resistance to adverse external weather conditions. Adverse meteorological condition inside the greenhouse is one of the main limiting factors for facility crop
Qi Zhang   +4 more
doaj   +1 more source

Detection of Plastic Greenhouses Using High Resolution Rgb Remote Sensing Data and Convolutional Neural Network

open access: yesJournal of Environmental Geography, 2021
Agricultural production in greenhouses shows a rapid growth in many parts of the world. This form of intensive farming requires a large amount of water and fertilizers, and can have a severe impact on the environment.
Jakab Balázs   +2 more
doaj   +1 more source

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