نتایج جستجو برای: glas

تعداد نتایج: 485  

2008
S. Berthier

Answer of the Author : A large bibliography yet exists on the lidar measurements and instruments. A fully description of the LITE, GLAS and CALIOP lidar instruments can be found in each of the reference furnished in the article. You can see for the LITE instrument (Winker et al., 1996), for the GLAS instrument (Palm et al., 1998), and to finish for the CALIOP instrument (Winker et al., 2002) )....

Journal: :Journal of the Air & Waste Management Association 2009
Saqib Mukhtar Atilla Mutlu Ronald E Lacey Calvin B Parnell

Studies show that agricultural and animal feeding operations (AFOs) contribute a considerable amount of ammonia (NH3) to the atmosphere. Agricultural NH3 emissions are recognized as an important air quality issue. Biological decomposition of manure from dairy operations results in emissions of NH3 and other gases. There is a need to determine NH3 emission factors (EFs) to compile annual NH3 inv...

Journal: :Remote Sensing 2014
Xiliang Ni Taejin Park Sungho Choi Yuli Shi Chunxiang Cao Xuejun Wang Michael A. Lefsky Marc Simard Ranga B. Myneni

The ultimate goal of our multi-article series is to demonstrate the Allometric Scaling and Resource Limitation (ASRL) approach for mapping tree heights and biomass. This third article tests the feasibility of the optimized ASRL model over China at both site (14 meteorological stations) and continental scales. Tree heights from the Geoscience Laser Altimeter System (GLAS) waveform data are used ...

2008
Yong Pang Michael Lefsky Hans-Erik Andersen Mary Ellen Miller Kirk Sherrill

The Geoscience Laser Altimeter System (GLAS), a spaceborne light detection and ranging (lidar) sensor, has acquired over 250 million lidar observations over forests globally, an unprecedented dataset of vegetation height information. To be useful, GLAS must be calibrated to measurements of height used in forestry inventory and ecology. Airborne discrete return lidar (DRL) can characterize veget...

Journal: :Computers, materials & continua 2021

Automated grading of colon biopsy images across all magnifications is challenging because tailored segmentation and dependent features on each magnification. This work presents a novel approach robust magnification-independent cancer framework to distinguish into four classes: normal, well, moderate, poor. The contribution this research develop magnification invariant hybrid feature set compris...

Journal: :K&K - Kultur og Klasse 2005

Journal: :Bautechnik 2020

Journal: :Journal f�r Praktische Chemie 1867

2015
H. Tang

The referee is correct about the bias introduced by seasonality, and a simple average of GLAS LAI over different months supports this hypothesis: 3.02 for May, 3.14 for June, 2.93 for October and 2.22 for November. However, we did not exclude the leaf flushing/senescence periods because we tried to maximize the usage of GLAS shots. The GLAS/ICESat mission was not operated year round but deploye...

Journal: :Annalen der Physik und Chemie 1844

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