Results 21 to 30 of about 221,927 (260)
Modeling the Directional Clumping Index of Crop and Forest
Remote Sensing, 2018 The Clumping Index (Ω) was introduced to quantify the spatial distribution pattern of vegetation elements. It is crucial to improve the estimation accuracy of vital vegetation parameters, such as Leaf Area Index (LAI) and Gross Primary Production (GPP ...
Jingjing Peng +6 more
doaj +1 more source
Scaling relations for gaps in fractional quantum Hall states [PDF]
Physical Review B, 1998 The microscopic approach of Murthy and Shankar, which has recently been used to calculate the transport gaps of quantum Hall states with fractions p/(2ps+1), also implies scaling relations between gaps within a single sequence (fixed s) as well as between gaps of corresponding states in different sequences.
Murthy, Ganpathy +3 more
openaire +2 more sources
Remote Sensing, 2020 The leaf area index (LAI) is a crucial structural parameter of forest canopies. Light Detection and Ranging (LiDAR) provides an alternative to passive optical sensors in the estimation of LAI from remotely sensed data. However, LiDAR-based LAI estimation
Yonghua Qu +6 more
doaj +1 more source
EVALUATION OF FOREST CANOPY AND UNDERSTORY GAP FRACTION DERIVED FROM TERRESTRIAL LASER SCANNING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 The quantification of forest carbon sequestration is helpful to understand the carbon storage on the Earth. The estimation of forest carbon sequestration can be achieved by the use of leaf area index (LAI), which is derived from forest gap fraction.
K. C. Chen, C. K. Wang
doaj +1 more source
Retrieving Leaf Area Index (LAI) Using Remote Sensing: Theories, Methods and Sensors
Sensors, 2009 The ability to accurately and rapidly acquire leaf area index (LAI) is an indispensable component of process-based ecological research facilitating the understanding of gas-vegetation exchange phenomenon at an array of spatial scales from the leaf to the
Guang Zheng, L. Monika Moskal
doaj +1 more source
Olive Crown Porosity Measurement Based on Radiation Transmittance: An Assessment of Pruning Effect
Sensors, 2016 Crown porosity influences radiation interception, air movement through the fruit orchard, spray penetration, and harvesting operation in fruit crops. The aim of the present study was to develop an accurate and reliable methodology based on transmitted ...
Francisco J. Castillo-Ruiz +4 more
doaj +1 more source
Charge gaps at fractional fillings in boson Hubbard ladders [PDF]
Physical Review B, 2014 8 pages, 15 ...
Ying, T. +4 more
openaire +2 more sources
Enhanced Gap Fraction Extraction From Hemispherical Photography
IEEE Geoscience and Remote Sensing Letters, 2015 Canopy structure can be estimated using gap fraction (GF) data, which can be directly measured with hemispherical photography. However, GF data accuracy is affected by sunlit canopy, multiple scattering, vignetting, blooming, and chromatic aberration. Here, we present an algorithm to classify hemispherical photography, whose aim is to reduce errors in ...
Gaston M. Diaz, Jose D. Lencinas
openaire +2 more sources
Remote Sensing, 2015 The development of near-surface remote sensing requires the accurate extraction of leaf area index (LAI) from networked digital cameras under all illumination conditions.
Yelu Zeng +8 more
doaj +1 more source
Dry Fractionation and Gluten-Free Sourdough Bread Baking from Quinoa and Sorghum
Foods, 2023 The roller milling of sorghum and quinoa seeds into flour fractions (coarse, middle, and fine) was investigated, chemically analysed, and applied in the baking of gluten-free sourdough bread.
Regine Schoenlechner +5 more
doaj +1 more source