نتایج جستجو برای: glas

تعداد نتایج: 485  

2008
Yanqiu Xing Junjie Zhang

Estimation of forest carbon storage is a critical challenge for understanding the global carbon cycle because it dominates the dynamics of the terrestrial carbon cycle. Light Detection and Ranging (LiDAR) system has a unique capability for estimating accurately forest canopy height, which has a direct relationship and can provide better understood to the aboveground carbon storage. To test the ...

2015
Reginald R. Muskett R. R. Muskett

Measuring centimeter-scale and smaller surface changes by satellite-based systems on the periglacial terrains and permafrost zones of the northern hemisphere is an ongoing challenge. We are investigating this challenge by using data from the NASA Ice, Cloud, and land Elevation Satellite Geoscience Laser Altimeter System (ICESat GLAS) and the JAXA Advanced Land Observing Satellite Phased Array t...

2011
J. Safar

Enhanced Loran (eLoran) is the latest in the longstanding and proven series of low frequency, LOng-RAnge Navigation systems. eLoran evolved from Loran-C in response to the 2001 Volpe Report on GPS vulnerability. The next generation of the Loran systems, eLoran, improves upon Loran-C through enhancements in equipment, transmitted signal, and operating procedures. The improvements allow eLoran to...

Journal: :Remote Sensing 2014
Paul M. Montesano Guoqing Sun Ralph Dubayah K. Jon Ranson

Satellite-based estimates of vegetation structure capture broad-scale vegetation characteristics as well as differences in vegetation structure at plot-scales. Active remote sensing from laser altimetry and radar systems is regularly used to measure vegetation height and infer vegetation structural attributes, however, the current uncertainty of their spaceborne measurements is likely to mask a...

Journal: :Medical History 1973
L G Stevenson

90. Ratepayer, Stonehaven Journal, 26 January 1911. 91. Ibid., 18 July 1912. 92. Ibid., 24 April 1913. 93. The reports are of great interest and include detailed accounts of marine biological research in Aberdeen and elsewhere. In charge of scientific investigations for over thirty years was T. Wemyss Fulton, an Edinburgh M.D. 94. Stonehaven Journal, 14 July 1859. 95. D.N.P. 'Obituary', Proc. R...

2008
Lixin Dong Bingfang Wu

Forest canopy height is an important input for ecosystem and highly correlated with aboveground biomass at the landscape scale. In this paper, we make efforts to extracte the maximum canopy height using GLAS waveform combination with the terrain index in sloped area where LiDAR data were present. Where LiDAR data were not present, the optical remote sensing data were used to estimate the canopy...

Journal: :Remote Sensing 2014
Ibrahim Fayad Nicolas Baghdadi Jean-Stéphane Bailly Nicolas Barbier Valéry Gond Mahmoud El Hajj Frédéric Fabre Bernard Bourgine

Estimating forest canopy height from large-footprint satellite LiDAR waveforms is challenging given the complex interaction between LiDAR waveforms, terrain, and vegetation, especially in dense tropical and equatorial forests. In this study, canopy height in French Guiana was estimated using multiple linear regression models and the Random Forest technique (RF). This analysis was either based o...

Journal: :Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography 2013
Scott T Reeves Alan C Finley Nikolaos J Skubas Madhav Swaminathan William S Whitley Kathryn E Glas Rebecca T Hahn Jack S Shanewise Mark S Adams Stanton K Shernan

Scott T. Reeves, MD, FASE, Alan C. Finley, MD, Nikolaos J. Skubas, MD, FASE, Madhav Swaminathan, MD, FASE, William S. Whitley, MD, Kathryn E. Glas, MD, FASE, Rebecca T. Hahn, MD, FASE, Jack S. Shanewise, MD, FASE, Mark S. Adams, BS, RDCS, FASE, and Stanton K. Shernan, MD, FASE, for the Council on Perioperative Echocardiography of the American Society of Echocardiography and the Society of Cardi...

2016

into English from the fifth German edition by A. Turnbull, M.A., B.Sc., M.B., Ch.B. (Glas.). London: Baiilfere, Tindall and Cox, 1928. Pp. xviii plus 556, with 324 figures. Price, 42s. net. The; volume in German is the fiith edition of a work originally published in 1910, and that under review is the first English translation. To use Professor Kohler's words, the work is meant to be " an advise...

Journal: :Heart Rhythm 2023

Despite the broadening spectrum of heart rhythm monitoring techniques, most appropriate modality and duration to detect atrial fibrillation (AF) are not consensual. 2D speckle tracking for left (LA) strain analysis seems feasible cardiomyopathy (ACM), which represents a substrate AF. We aimed perform systematic review meta-analysis on global longitudinal (GLAS) contraction rate (Sra) difference...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید