Results 21 to 30 of about 4,238 (210)

Detection of historical landscape changes in Lake Victoria Basin, Kenya, using remote sensing multi-spectral indices

open access: yesWatershed Ecology and the Environment, 2022
The Kenyan Lake Victoria basin has been experiencing land degradation and overexploitation as seen in various landscape changes. Quantifying and understanding the nature of these changes is essential for management decision-making.
Dancan O. Onyango, Stephen B. Opiyo
doaj   +1 more source

Structural phase transition and electronic properties of NdBi

open access: yesAIP Conference Proceedings, 2015
The structural and electronic properties of NdBi from an electronic structure calculation have been presented. The calculation is performed using self-consistent tight binding linear muffin tin orbital (TB-LMTO) method within the local density approximation (LDA). The calculated equilibrium structural parameters are in good agreement with the available
Ashvini K. Sahu   +2 more
openaire   +2 more sources

Geometry of the Nonabelian DBI Dyonic Instanton [PDF]

open access: yes, 2000
We introduce a calculus of the Lie algebra valued functions present in Tseytlin's proposal for the nonabelian DBI action, and apply it to show that the recently found dyonic instanton is a solution of the full nonabelian DBI action.
Aganagic   +20 more
core   +2 more sources

Optimalisasi Transformasi Spektral Ui, Ndbi, Ndvi Dan Kombinasi Tranformasi Spektral Ui – Ndvi Dan Ndbi - Ndvi Guna Mendeteksi Kepadatan Lahan Terbangun Di Kota Magelang

open access: yesJAGAT (Jurnal Geografi Aplikasi dan Teknologi), 2017
Penggunaan citra dengan resolusi menengah guna memndeteksi kepadatan lahan terbangun pada saat ini belum dimanfaatkan secara optimal, karena sulitnya menbedakan lahan terbangun dan lahan terbuka/kosong.Penelitian ini bertujuan untuk nmengkaji kemampuan tranformasi spectral dan kombinasinya guna mendeteksi kepadatan lahan terbangun dan menkaji pola ...
Kurniawan, Surya   +2 more
openaire   +2 more sources

Trispectrum estimator in equilateral type non-Gaussian models [PDF]

open access: yes, 2010
We investigate an estimator to measure the primordial trispectrum in equilateral type non-Gaussian models such as k-inflation, single field DBI inflation and multi-field DBI inflation models from Cosmic Microwave Background (CMB) anisotropies.
Koyama, Kazuya, Mizuno, Shuntaro
core   +2 more sources

Normalized Dryness Built-up Index (NDBI) to Detect Settlement Change In Buleleng Sub-District

open access: yesMedia Komunikasi FPIPS, 2021
This research aims to find out the development of settlements that occur over the next 20 years. Monitoring the development of settlements is carried out by remote sensing methods using Landsat 7 ETM+ imagery and Landsat 8 OLI imagery. Landsat 7 ETM+ used in 2000, and Landsat 8 OLI used in 2019.
Muhammad Rahman, A Sediyo Adi Nugraha
openaire   +2 more sources

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

Avaliação da precisão temática de composições de NDBI, NDVI, NDWI

open access: yesRevista Brasileira de Geomática, 2016
Este artigo trata de experimentos usando composições de índices físicos NDVI (Normalized Difference Vegetation Index), NDWI (Normalized Difference Water Index), NDBI (Normalized Difference Built-Up Index), para avaliar a precisão temática do classificador Máxima Verossimilhança (MAXVER) usando exatidão global, índice kappa e teste Z.
Júlio Cezar Cotrim Moreira Filho   +1 more
openaire   +3 more sources

A COMPARATIVE STUDY OF LAND SURFACE TEMPERATURE WITH DIFFERENT INDICES ON HETEROGENEOUS LAND COVER USING LANDSAT 8 DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The temperature rise in urban areas has become a major environmental concern. Hence, the study of Land surface temperature (LST) in urban areas is important to understand the behaviour of different land covers on temperature.
R. Bala   +3 more
doaj   +1 more source

A comparative study of impervious surface extraction using Sentinel-2 imagery

open access: yesEuropean Journal of Remote Sensing, 2020
The accuracy and efficiency of impervious surface extraction using different algorithms vary greatly, and algorithm applicability depends on the study area.
Junyi Chen   +5 more
doaj   +1 more source

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