Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Walter J Silva"'
Autor:
Marcelo B. Perotoni, Sergio Tavares, Bruno C. de S. Sanches, Walter J. Silva, Sergio T. Kofuji
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 2, Pp 407-416 (2021)
Abstract Monopulse radars operate with simultaneous beams and are used for tracking purposes, relying only on hardware to provide a real-time indication of the target position. A monopulse array and its feeding network is implemented and tested, in t
Externí odkaz:
https://doaj.org/article/f52cad49ec894fabbdf9e3ac65e2cd8c
Autor:
Yousef Bozorgnia, Norman A Abrahamson, Sean K Ahdi, Timothy D Ancheta, Linda Al Atik, Ralph J Archuleta, Gail M Atkinson, David M Boore, Kenneth W Campbell, Brian S-J Chiou, Victor Contreras, Robert B Darragh, Sahar Derakhshan, Jennifer L Donahue, Nick Gregor, Zeynep Gulerce, IM Idriss, Chen Ji, Tadahiro Kishida, Albert R Kottke, Nicolas Kuehn, DongYoup Kwak, Annie O-L Kwok, P Lin, Jorge Macedo, Silvia Mazzoni, Saburoh Midorikawa, Sifat Muin, Grace A Parker, Sanaz Rezaeian, Hongjun Si, Walter J Silva, Jonathan P Stewart, Melanie Walling, Katie Wooddell, Robert R Youngs
Publikováno v:
Earthquake Spectra. 38:783-798
This article summarizes the Next Generation Attenuation (NGA) Subduction (NGA-Sub) project, a major research program to develop a database and ground motion models (GMMs) for subduction regions. A comprehensive database of subduction earthquakes reco
Autor:
Silvia Mazzoni, Tadahiro Kishida, Jonathan P Stewart, Victor Contreras, Robert B Darragh, Timothy D Ancheta, Brian SJ Chiou, Walter J Silva, Yousef Bozorgnia
Publikováno v:
Earthquake Spectra. 38:1529-1548
The Next-Generation Attenuation for subduction zone regions project (NGA-Sub) has developed data resources and ground motion models for global subduction zone regions. Here we describe the NGA-Sub database. To optimize the efficiency of data storage,
Publikováno v:
Earthquake Spectra. 38:579-614
The damaging 4 May 2018 M 6.9 Kalapana earthquake and its aftershocks have provided the largest suite of strong motion records ever produced for an earthquake sequence in Hawaii exceeding the number of records obtained in the deep 2006 M 6.7 Kiholo B
Autor:
Chris H. Cramer, Robert B. Darragh, Youssef M. A. Hashash, Christine A. Goulet, Robert R. Youngs, Tadahiro Kishida, Jonathan P. Stewart, Walter J. Silva, Joseph Harmon, Timothy D. Ancheta, Grace A. Parker
Publikováno v:
Earthquake Spectra. 37:1331-1353
This article documents the earthquake ground motion database developed for the NGA-East Project, initiated as part of the Next Generation Attenuation (NGA) research program and led by the Pacific Earthquake Engineering Research Center (PEER). The pro
Autor:
Eric M. Thompson, Walter J. Silva, Ellen M. Rathje, David M. Boore, Albert R. Kottke, Christine A. Goulet, Tadahiro Kishida, Yousef Bozorgnia, Norman A. Abrahamson, Justin Chow Hollenback, Xiaoyue Wang, Olga-Joan Ktenidou
Publikováno v:
Earthquake Spectra. 37:1420-1439
Traditional ground-motion models (GMMs) are used to compute pseudo-spectral acceleration (PSA) from future earthquakes and are generally developed by regression of PSA using a physics-based functional form. PSA is a relatively simple metric that corr
Autor:
Tadahiro Kishida, Norman A. Abrahamson, Olga-Joan Ktenidou, Walter J. Silva, Robert B. Darragh
Publikováno v:
Earthquake Spectra. 37:1391-1419
This article describes the work undertaken within the Next Generation Attenuation (NGA)-East project with the aim of estimating κ0 (the site-specific component of the high-frequency decay parameter, κ) for rock sites in Central and Eastern North Am
Autor:
Jonathan P. Stewart, Halil Uysal, Kenneth W. Campbell, Youssef M. A. Hashash, Walter J. Silva, Okan Ilhan, Sissy Nikolaou, Ellen M. Rathje
Publikováno v:
Earthquake Spectra. 37:1516-1533
The Next Generation Attenuation Relationships for Central & Eastern North-America (NGA-East) Geotechnical Working Group (GWG) has presented models for site amplification in Central and Eastern North America that represent a significant change from pa
Publikováno v:
International Journal of Geophysics, Vol 2016 (2016)
Several methods were used to estimate Vs30 from site profiles with borehole depths of about 20 m for the strong-motion stations located in Southwest China. The methods implemented include extrapolation (constant and gradient), Geomatrix Site Classifi
Externí odkaz:
https://doaj.org/article/917942ac810d4249989a42981df481de
Autor:
Jonathan P. Stewart, Okan Ilhan, Grace A. Parker, Kenneth W. Campbell, Ellen M. Rathje, Youssef M. A. Hashash, Walter J. Silva, Joseph Harmon
Publikováno v:
Earthquake Spectra. 36:69-86
This article presents recommendations for nonlinear site amplification models in Central and Eastern North America (CENA), which are developed from one-dimensional site response analyses results and accompanies linear site amplification model in a co