Results 31 to 40 of about 886 (252)

Estimating Leaf Area Index (LAI) in Vineyards Using the PocketLAI Smart-App

Sensors, 2016
Estimating leaf area index (LAI) of Vitis vinifera using indirect methods involves some critical issues, related to its discontinuous and non-homogeneous canopy.
Francesca Orlando, Ermes Movedi, Davide Coduto, Simone Parisi, Lucio Brancadoro, Valentina Pagani, Tommaso Guarneri, Roberto Confalonieri   +7 more
doaj   +1 more source

HemiPy: A Python module for automated estimation of forest biophysical variables and uncertainties from digital hemispherical photographs

Methods in Ecology and Evolution, 2023
Digital hemispherical photography (DHP) is widely used to derive forest biophysical variables including leaf, plant, and green area index (LAI, PAI and GAI), the fraction of intercepted photosynthetically active radiation (FIPAR), and the fraction of ...
Luke A. Brown, Harry Morris, Sylvain Leblanc, Gabriele Bai, Christian Lanconelli, Nadine Gobron, Courtney Meier, Jadunandan Dash   +7 more
doaj   +1 more source

The estimation of canopy attributes from digital cover photography by two different image analysis methods

iForest - Biogeosciences and Forestry, 2014
Proximal sensing methods using digital photography have gained wide acceptance for describing and quantifying canopy properties. Digital hemispherical photography (DHP) is the most widely used photographic technique for canopy description.
Chianucci F, Chiavetta U, Cutini A
doaj   +1 more source

Forest cover density mapping of Zagros forests using Landsat-9 imagery and ‎hemispherical photographs

پژوهش و توسعه جنگل, 2023
The goal of this study is to see how well the forest canopy density (FCD) model and the GLAMA mobile ‎app estimate the canopy cover density of Zagros forests in Sardasht province. Landsat 9 Operational Land ‎Imager-2 (OLI-2) in 2022 was employed for this
Hadi Beygiheidarlou, Asma Karamat Mirshekarlou, Samira Sasanifar, Bakhtear Khezryan   +3 more
doaj   +1 more source

Engineering Pluripotent Stem Cells‐Derived Inner Ear Organoids With Enhanced Maturation and Reproducibility by Micro‐Topographical Cues

Advanced Materials, EarlyView.
Micro‐topographical cues applied through temporally controlled microscale confinement improve the reproducibility, spatial organization, and neurosensory‐associated features of pluripotent stem cell‐derived inner ear organoids. Integration with a vascularized organoid platform further enables controlled investigation of vascular‐epithelial interactions
Harshita Sharma, Jungeun Lim, Woochan Kim, Yeon Ju Kim, Dream Kim, Shinyull Lee, Chaeyeon Park, Stephen Rhee, Shruthy Kuttapan, Jungho Ha, Sang Wook Park, Kyunghoon Kim, Noo Li Jeon, Sunho Park, Yun‐Hoon Choung, Jangho Kim   +15 more
wiley   +1 more source

How to implement the data collection of leaf area index by means of citizen science and forest gamification?

Silva Fennica
Leaf area index (LAI) is a critical parameter that influences many biophysical processes within forest ecosystems. Collecting in situ LAI measurements by forest canopy hemispherical photography is however costly and laborious.
Shaohui Zhang, Lauri Korhonen, Timo Nummenmaa, Simone Bianchi, Matti Maltamo   +4 more
doaj   +1 more source

LiDAR Voxel-Size Optimization for Canopy Gap Estimation

Remote Sensing, 2022
Terrestrial laser scanning of forest structure is used increasingly in place of traditional technologies; however, deriving physical parameters from point clouds remains challenging because LiDAR returns do not have defined areas or volumes.
C. Wade Ross, E. Louise Loudermilk, Nicholas Skowronski, Scott Pokswinski, J. Kevin Hiers, Joseph O’Brien   +5 more
doaj   +1 more source

Maskless Fabrication of PLA‐Based Neural Arrays for CNS Recording and Stimulation

Advanced Materials Interfaces, EarlyView.
Biodegradable neural interfaces enable bidirectional communication with the CNS. Through electrochemical characterization, ageing tests with impedance monitoring, and in vivo validation, we assess the performance of PLA‐based epicortical and spinal implants.
Anna De Salvo, Federica Velluto, Ilenia Sergi, Michele Di Lauro, Verónica Barranco‐Maresca, Elena Alonso‐Calviño, Yasmina Hernández‐Martín, Juan Aguilar, Juliana M. Rosa, María C. Serrano, Carolina Giulia Ferroni, Federico Rondelli, Elisa López‐Dolado, Luciano Fadiga, Fabio Biscarini   +14 more
wiley   +1 more source

Mapping and analyzing mangrove canopy density in East Belitung using Pleiades satellite imagery and hemispherical photography

Egyptian Journal of Remote Sensing and Space Sciences
Mangrove ecosystems face growing threats from human activity and erosion. This study aims to map mangrove distribution and canopy density and to evaluate the relationship between Normalized Difference Vegetation Index (NDVI) and field-measured canopy ...
Syamsul B. Agus, Martines Pasaribu, Yulius, Hadiwijaya L. Salim, Taslim Arifin, Mariska A. Kusumaningtyas, Sri T. Hartati, Rudhy Akhwady, Devi D. Suryono, Aprizon Putra, Agus Sufyan, Muhammad Ramdhan, Ari Wahyono, Rinny Rahmania, Zulfiandi, Fery Kurniawan, Lily Reeves   +16 more
doaj   +1 more source

Comparison of Landsat-8 and Sentinel-2 Data for Estimation of Leaf Area Index in Temperate Forests

Remote Sensing, 2019
With the launch of the Sentinel-2 satellites, a European capacity has been created to ensure continuity of Landsat and SPOT observations. In contrast to previous sensors, Sentinel-2′s multispectral imager (MSI) incorporates three additional ...
Lorenz Hans Meyer, Marco Heurich, Burkhard Beudert, Joseph Premier, Dirk Pflugmacher   +4 more
doaj   +1 more source