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Now showing items 21-30 of 772
The Black hole mass of NGC 4151: comparison of reverberation mapping and stellar dynamical measurements
(American Astronomical Society - The Astrophysical Journal, 2007-11-20)
We present a stellar dynamical estimate of the black hole (BH) mass in the Seyfert 1
galaxy, NGC 4151. We analyze ground-based spectroscopy as well as imaging data
from the ground and space, and we construct 3-integral ...
Mortality from ship emissions: A Global assessment
(American Chemical Society, 2007-11)
Epidemiological studies consistently link ambient concentrations of particulate matter (PM) to negative health impacts, including asthma, heart attacks, hospital admissions, and premature mortality. We model ambient PM ...
Displacement of artifacts in inverse scattering
(The Institute of Physics (IOP), 2007-08)
We analyze further inverse problems related to synthetic aperture radar imaging considered by Nolan and Cheney (2002 Inverse Problems 18 221). Under a nonzero curvature assumption, it is proved that the forward operator F ...
Prostate boundary detection and volume estimation using TRUS images for brachytherapy applications
(International Journal of Computer Assisted Radiology and Surgery, 2007-08)
Objective: Authors propose a semi-automatic segmentation algorithm for three-dimensional prostate boundary detection from trans-rectal ultrasound images. As a part of brachytherapy treatment with seeds for early stage ...
Timing is everything: Coordination of strike kinematics affects the force exerted by suction feeding fish on attached prey
(Journal of Experimental BiologyCompany of Biologists, 2007-07-17)
During aquatic suction feeding, the predator opens its
mouth and rapidly expands its buccal cavity, generating a
flow field external to the mouth. The rapid expansion of the
buccal cavity produces high fluid velocities ...
Evaluation of methods for verifying the performance of color-measuring instruments. Part I: Repeatability
(2007-07-05)
A recent ASTM specification, E2214-02 Standard Practice for Specifying and Verifying the Performance of Color-Measuring Instruments, was created to standardize the terminology and procedures used to evaluate color measuring ...
Evaluation of methods for verifying the performance of color-measuring instruments. Part II: Inter-instrument reproducibility
(2007-07-05)
Part I of this series of papers described the recent ASTM specification, E2214-02 Standard Practice for Specifying and Verifying the Performance of Color-Measuring Instruments, . E2214 is intended to standardize the ...
A Stochastic model of an ecological–economic system with two keystone species
(Elsevier, 2007-06-05)
Actions taken by a manager affect the health of the keystone species of an ecological–
economic system. In turn, the health of these keystone species largely determines the
resilience of the underlying ecological–economic ...
Considering the surround in device-independent color imaging
(Wiley InterScience: Color Research & Application, 2007-03-14)
When viewing images, the relative luminance of the surround has a
profound impact on the apparent contrast of the image. For this reason,
photographic transparencies intended for projection in a darkened room are
produced ...
Perspective: empirical generalization and the role of culture in new product development
(Blackwell Publishing, Ltd. The definitive version is available at http://www.blackwell-synergy.com, 2007-03)
Empirical generalization continues to be a challenge in most applied fields that favor publication of original results. The purpose of this study was to report on a new product development exercise in one, controlled ...