Results 31 to 40 of about 13,983 (163)

Gravity with extra dimensions and dark matter interpretation: Phenomenological example via Miyamoto-Nagai galaxy

, 2011
A configuration whose density profile coincides with the Newtonian potential for spiral galaxies is constructed from a 4D isotropic metric plus extra dimensional components. A Miyamoto-Nagai ansatz is used to solve Einstein equations. The stable rotation
B Fort, B Moore, Carlos Henrique Coimbra-Araújo, CH Coimbra-Araújo, CH Coimbra-Araújo, D Vogt, F Zwicky, F Zwicky, J Binney, J Oort, J Oort, JF Navarro, KG Begeman, M Miyamoto, O Garrido, Patricio Letelier, S Courteau, S Smith, T Appelquist, V Rubin, Y Mellier, Y Sofue, Y Sofue, Y Sofue   +23 more
core   +1 more source

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source

Uji Aktivitas Antikolesterol Ekstrak Etanol Daun Gedi (Abelmoschus Manihot L. Medik) Secara In Vitro

Window of Health, 2020
Perubahan gaya hidup antara lain pola makan menyebabkan pola makan tradisional bergeser ke pola makan barat seperti fast food yang banyak mengandung kalori, lemak dan kolesterol.
Andi Nurjayanti Ilyas, Rahmawati Rahmawati, Harti Widiastuti   +2 more
doaj   +1 more source

Social network dynamics under experimental manipulations of predation risk and food abundance in wild rock hyraxes

Journal of Animal Ecology, EarlyView.
This study combines replicated experimental manipulation, social network analysis, network permutations and meta‐analysis to disentangle active from spatially‐induced changes in animal network structure in the wild. It reveals that short‐term environmental changes primarily alter space use, with limited effects on social structure.
Camille N. M. Bordes, Marine Ammeter, Chuchu Lu, Rosanne Beukeboom, Yael Goll, Julien Bourdiol, Amiyaal Ilany   +6 more
wiley   +1 more source

Accuracy assessment of GEDI terrain elevation, canopy height, and aboveground biomass density estimates in Japanese artificial forests

Science of Remote Sensing
Global forests face severe challenges owing to climate change, making dynamic and accurate monitoring of forest conditions critically important. Forests in Japan, covering approximately 70% of the country's land area, play a vital role yet often ...
Hantao Li, Xiaoxuan Li, Tomomichi Kato, Masato Hayashi, Junjie Fu, Takuya Hiroshima   +5 more
doaj   +1 more source

GEDI waveform metrics in vegetation mapping—a case study from a heterogeneous tropical forest landscape

Environmental Research Letters, 2023
The distribution of different vegetation types is important information for landscape management, especially in the context of tackling global environmental change.
Adrian Dwiputra, Nicholas C Coops, Naomi B Schwartz   +2 more
doaj   +1 more source

Estimating the Optimal Threshold for Accuracy Assessment of the Global Ecosystem Dynamics Investigation (GEDI) Data in a Gentle Relief Urban Area

Remote Sensing, 2022
LiDAR is an excellent source of elevation data used in many surveys. The spaceborne handle system, Global Ecosystem Dynamics Investigation (GEDI), provides ground elevation information with high accuracy except for areas with steep slopes. GEDI data have
Felipe Lima Ramos Barbosa, Renato Fontes Guimarães, Osmar Abílio de Carvalho Júnior, Roberto Arnaldo Trancoso Gomes, Osmar Luiz Ferreira de Carvalho, Thyego Pery Monteiro de Lima   +5 more
doaj   +1 more source

ForestForTrees: An R package to infer forest structure from remote sensing data

Methods in Ecology and Evolution, EarlyView.
Abstract Estimating forest size‐abundance distributions is essential for understanding demographic processes and structural dynamics. Remote sensing provides broad coverage but often misses smaller trees hidden beneath the canopy, complicating inference of the full size distribution.
Adam J. Eichenwald, John M. Grady, Alyson East, Noah Charney, Sydne Record   +4 more
wiley   +1 more source

Evaluating and comparing the performance of ICESat-2 and GEDI data for estimating aboveground biomass in mangroves

International Journal of Digital Earth
The launch of the ICESat-2 and GEDI spaceborne LiDAR missions has provided new opportunities for large-scale estimation of mangrove aboveground biomass density (AGBD); however, their footprint-scale performance remains unclear.
Jianan Yu, Sheng Nie, Wenjie Liu, Zhongyi Sun, Cheng Wang, Xiaohuan Xi, Xiaoxiao Zhu, Mengyang Fang   +7 more
doaj   +1 more source

Inferring alpha, beta, and gamma plant diversity across biomes with GEDI spaceborne lidar

Environmental Research: Ecology, 2023
Biodiversity-structure relationships (BSRs), which describe the correlation between biodiversity and three-dimensional forest structure, have been used to map spatial patterns in biodiversity based on forest structural attributes derived from lidar ...
C R Hakkenberg, J W Atkins, J F Brodie, P Burns, S Cushman, P Jantz, Z Kaszta, C A Quinn, M D Rose, S J Goetz   +9 more
doaj   +1 more source