Now showing items 1-10 of 92
A comparison of material classification techniques for ultrasound inverse imaging
(Journal of the Acoustical Society of America, 2002-01)
The conjugate gradient method with edge preserving regularization (CGEP) is applied to the ultrasoundinverse scattering problem for the early detection of breast tumors. To accelerate image reconstruction, several different ...
A practical cross section for scattering from rough surfaces at very low grazing angles in both the forward and backward directions
(Taylor and Francis, 2009-08)
In this paper we develop an extension of the small slope approximation (SSA) for scattering from randomly rough Dirichlet surfaces, which includes some multiple scattering. This extension is designated by SSA+. We focus ...
A Java-based tool for the design of classification microarrays
(Oxford University Press, 2008-08)
Classification microarrays are used for purposes such as identifying strains of bacteria and determining genetic relationships to understand the epidemiology of an infectious disease. For these cases, mixed microarrays, ...
Optical reflectance assay for the detection of biofilm formation
(Journal of Biomedical Optics, 2005-08)
We describe the protocol for an inexpensive and nondestructive optical reflectance assay for the measurement of biofilm formation. Reflectance data are obtained using an Ocean Optics !Dunedin, Florida" USB 2000 spectrometer ...
A numerical study of conjugate gradient directions for an ultrasound inverse problem
(World Scientific Publishing, 2004-12)
In ultrasound inverse problems, the integral equation can be nonlinear, ill-posed, and computationally expensive. One approach to solving such problems is the conjugate gradient (CG) method. A key parameter in the CG method ...