NEHRP Clearinghouse

displaying 81 - 90 results in total 2187

  • Liu, H. H.; Fu, K. S.
    An Application of Syntactic Pattern Recognition to Seismic Discrimination.
    August 1981, 26 p.
    Identifying Number(s): TR-EE81-25
    Keywords: ; Syntax; Waveforms; Seismic waves; Underground explosions; Nuclear explosions; Clustering; Samplers; Parsers; Pattern recognition; Discrimination; Distribution functions; Earthquakes; Error analysis; Decision making; Grammars; Performance (Engineering)

  • Galunic, B.; Bertero, V. V.; Popov, E. P.
    An Approach for Improving Seismic Behavior of Reinforced Concrete Interior Joints.
    National Science Foundation, Washington, DC., December 1977, 116 p.
    Identifying Number(s): UCB/EERC-77/30
    Keywords: Strains; Earthquake resistant structures; Reinforced concrete; Deformation; Columns (Supports); Construction joints; Beams (Supports); Earthquake engineering; Concrete construction

  • Yao, J. T. P.
    An Approach to Damage Assessment of Existing Structures.
    National Science Foundation, Washington, DC. Engineering and Applied Science., October 1979, 32 p.
    Identifying Number(s): CE-STR-79-4
    Keywords: Structures; Fuzzy sets; Damage assessment; Earthquake resistant structures; Mathematical models; Pattern recognition; Earthquake engineering; Set theory; Earthquakes; Dynamic structural analysis

  • Najita, K.
    An Engineering Feasibility Study of an Ionospheric Technique to Improve Tsunami Warning Systems.
    National Science Foundation, Washington, DC. Engineering and Applied Science., September 30, 1976, 210 p.
    Keywords: Doppler effect; Ray tracing; Fortran 4 programming language; Ionosphere; Rayleigh waves; Elastic waves; Tsunamis; Computer programs; Warning systems; Fortran; Infrasonic radiation; Earthquakes; Ionospheric disturbance

  • Saada, A. S.; Fries, G.; Ker, C. C.
    An Evaluation of Laboratory Testing Techniques in Soil Dynamics.
    National Science Foundation, Washington, DC., March 1982, 71 p.
    Keywords: Landslides; Ground motion; Earthquake engineering; Clays; Earthquakes; Shear tests; Soil dynamics; Cyclic loads; Test equipment; Sands; Triaxial tests; Soil tests

  • Nau, J. M.; Hall, W. J.
    An Evaluation of Scaling Methods for Earthquake Response Spectra.
    National Science Foundation, Washington, DC., May 1982, 350 p.
    Identifying Number(s): ['UILU-ENG-82-2007', 'SRS-499']
    Keywords: Seismic design; Earthquake resistant structures; Spectral energy distribution; Seismology; Elastic analysis; Computer applications; Ground motion; Earthquake engineering; Earthquakes; Dynamic response; Frequency distribution; Scaling methods; Design criteria

  • Nau, J. M.; Hall, W. J.
    An Evaluation of Scaling Methods for Earthquake Response Spectra.
    National Science Foundation, Washington, DC., May 1982, 351 p.
    Identifying Number(s): ['STRUCTURAL RESEARCH SER-499', 'UILU-ENG-82-2007']
    Keywords: Response spectra; Earthquake resistant structures; Mechanical hysteresis; Dynamic response; Ground motion; Earthquake engineering; Spectrum analysis; Scaling factors; Linear systems; Earthquakes

  • Werner, S. D.; Lee, L. C.; Wong, H. L.; Trifunac, M. D.
    An Evaluation of the Effects of Traveling Seismic Waves on the Three-Dimensional Response of Structures.
    National Science Foundation, Washington, D.C. Research Applied to National Needs., October 1977, 161 p.
    Identifying Number(s): AA-R-7720-4514
    Keywords: Bridges; Earthquake resistant structures; CAST1 computer program; Earth movements; Dynamic response; Ground motion; Earthquake engineering; Bridge foundations; Computer programming; Computer aided analysis; Soil dynamics; Soil structure interactions; Earthquakes

  • Hegemier, G. A.; Krishnamoorthy, G.; Nunn, R. O.
    An Experimental Study of Concrete Masonry Under Seismic-Type Loading.
    National Science Foundation, Washington, DC. Applied Science and Research Applications., January 1975, 41 p.
    Keywords: Masonry; Earthquake resistant structures; Seismic loads; Construction joints; Earth movements; Ground motion; Earthquake engineering; Cyclic loads; Concrete products; Rheological properties; Concrete construction; Earthquakes

  • Kausel, E.
    An Explicit Solution for the Green Functions for Dynamic Loads in Layered Media.
    National Science Foundation, Washington, DC., May 1981, 83 p.
    Identifying Number(s): R81-13
    Keywords: Dynamic loads; Soils; Static loads; Stiffness methods; Mathematical models; Computer applications; Green functions; Soil dynamics; Soil structure interactions; Earthquakes