Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Norbert E. Yankielun"'
Autor:
Robert Leconte, Yves Gauthier, Norbert E. Yankielun, Monique Bernier, Steven F. Daly, Francis Bérubé
Publikováno v:
Cold Regions Science and Technology. 55:212-220
A controlled experiment was conducted at the Cold Region Research and Engineering Laboratory (CRREL) facilities for retrieving freshwater ice characteristics using a Frequency Modulated Continuous Wave (FM-CW) radar system. The purpose of this study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17d8b1c0074198422a9232fb908d1f32
https://doi.org/10.1016/j.coldregions.2008.04.003
https://doi.org/10.1016/j.coldregions.2008.04.003
Publikováno v:
Cold Regions Science and Technology. 43:177-186
An instrument 1 which exploits geometric optics was devised to measure the thickness of slabs of optically transparent material such as Plexiglas or freshwater ice using a high-intensity light source. The apparatus consisting of a prism, a micrometer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::468658b3e83c05d9f47342b5eea1128c
https://doi.org/10.1016/j.coldregions.2005.04.003
https://doi.org/10.1016/j.coldregions.2005.04.003
Publikováno v:
Cold Regions Science and Technology. 40:123-134
Snow depth was measured with an L-band frequency-modulated continuous wave (FMCW) radar operating from an aerial tramway up to 70 m above the ground. Snow depth, wetness, and slope varied greatly along the 2.4-km transect, with 640 m of relief. Radar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92d9807d963c9a18396b1f7708810c10
https://doi.org/10.1016/j.coldregions.2004.06.005
https://doi.org/10.1016/j.coldregions.2004.06.005
Autor:
James H. Clark, Norbert E. Yankielun
Publikováno v:
Applied Ocean Research. 25:93-100
Washover is the condition of occasional, partial, or complete inundation of the surface of a body floating in water. Washover is typically caused by wave and wind action. A knowledge of the three-dimensional spatial and temporal parameters of seawate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::582d64edcc4eb0b033306075f70749ba
https://doi.org/10.1016/s0141-1187(03)00045-2
https://doi.org/10.1016/s0141-1187(03)00045-2
Publikováno v:
Canadian Journal of Civil Engineering. 27:26-32
Thousands of bridges throughout the United States have been identified as being scour critical (i.e., susceptible to failure from pier and (or) abutment scour). Scour occurs during times of rapid river flow when sediments, including rocks, gravel, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f880350f112771a5e8536fb01324f24
https://doi.org/10.1139/l99-041
https://doi.org/10.1139/l99-041
Autor:
Steven A. Arcone, Norbert E. Yankielun
Publikováno v:
Journal of Glaciology. 46:477-490
We have tested the ability of a 1.12–1.76 GHz bandwidth airborne Frequency Modulation–Continuous Wave (FM-CW) radar with an effective pulse duration of 3 ns to penetrate temperate ice of the ablation zone of Black Rapids Glacier, central Alaska,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d7807edad25d44ae78278788091ce71
https://doi.org/10.3189/172756500781833133
https://doi.org/10.3189/172756500781833133
Autor:
Norbert E. Yankielun, John J. Gagnon
Publikováno v:
Canadian Journal of Civil Engineering. 26:168-176
A prototype, electromagnetic-based frazil ice detection system (patent pending) has been developed and tested under simulated frazil ice accretion conditions in an environmentally controlled flume. The system employs a time-domain reflectometer (TDR)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b204cba36eb7e1b227bffdba719cd6b6
https://doi.org/10.1139/l98-058
https://doi.org/10.1139/l98-058
Publikováno v:
Journal of Architectural Engineering. 4:135-141
The writers have devised a prototype cable-based roof moisture detection and location system (U.S. Patent 5,648,724) that was tested in simulated conditions. The detection system can use a variety of principles to monitor roofing for the presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ad09f2fa31e612c77394d55f7566e1f
https://doi.org/10.1061/(asce)1076-0431(1998)4:4(135)
https://doi.org/10.1061/(asce)1076-0431(1998)4:4(135)
Publikováno v:
Cold Regions Science and Technology. 27:17-30
A sled-mounted X-band FM-CW radar and field data reduction system was developed and field tested. An integral part of the measurement program was the use of a computer algorithm to pick peak radar amplitudes, which were needed to convert radar data i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5802c1c8a911a59ee9a28ad1d6ce8daf
https://doi.org/10.1016/s0165-232x(97)00020-7
https://doi.org/10.1016/s0165-232x(97)00020-7
Publikováno v:
Journal of Thermal Insulation and Building Envelopes. 21:45-67
A new, simple, and inexpensive prototype moisture sensor (patent pending) has been developed and tested in a small mockup of a low-sloped roof. The sensor comprises an inductor and a moisture-sensitive capacitor; it reqmres neither batteries nor wire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df2d332dee16bc510aa9591d1de9093c
https://doi.org/10.1177/109719639702100106
https://doi.org/10.1177/109719639702100106