19,624 research outputs found
A deterministic algorithm for experimental design applied to tomographic and microseismic monitoring surveys
No full textMost general experimental design algorithms are either: (i) stochastic and hence give different designs each time they are run with finite computing power, or (ii) deterministic but converge to results that depend on an initial or reference design, taking little or no account of the range of all other possible designs. In this paper we introduce an approximation to standard measures of experimental design quality that enables a new algorithm to be used. The algorithm is simple, deterministic and the resulting experimental design is influenced by the full range of possible designs, thus addressing problems (i) and (ii) above. Although the designs produced are not guaranteed to be globally optimal, they significantly increase the magnitude of small eigenvalues in the model–data relationship (without requiring that these eigenvalues be calculated). This reduces the model uncertainties expected post-experiment. We illustrate the method on simple tomographic and microseismic location examples with varying degrees of seismic attenuation
Curtis, Charlotte -- 1976-80 -- Correspondence, Individual -- letter, 1976-10-23
No full textLetter from Sabin, Albert B. to Curtis, Charlotte dated 1976-10-23.Sabin Collection Fair Use Policy</a
Curtis, Charlotte -- 1976-80 -- Correspondence, Individual -- letter, 1976-11-09
No full textLetter from Sabin, Albert B. to Curtis, Charlotte dated 1976-11-09.Sabin Collection Fair Use Policy</a
Curtis, Charlotte -- 1976-80 -- Correspondence, Individual -- letter, 1980-05-14
No full textLetter from Sabin, Albert B. to Curtis, Charlotte dated 1980-05-14.Sabin Collection Fair Use Policy</a
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, concerning camp fund donations and reports
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, sending in camp fund donations
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, sending in camp fund donation
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, concerning monthly reports
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, sending in reports
Letter from Curtis C. Ray to S. B. Simmons
No full textLetter from Curtis C. Ray to S. B. Simmons, sending in monthly report and inventory list
- …
