D. René Rasmussen

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This paper addresses the need for a manageable method of evaluating the overall image quality of hardcopy output from printer systems so that the systems can be compared in a meaningful way. Image quality metrics are widely used and are very objective, but are unsuitable for this purpose because there is no good way of extracting overall image quality from(More)
TITLE: Sex and microhabitat influence the allocation of mycosporine-like amino acids to tissues in the purple sea urchin, Strongylocentrotus purpuratus Field surveys of Strongylocentrotus purpuratus demonstrated that concentrations of natural sunscreens, mycosporine-like amino acids (MAAs), were higher in females than males for both gonadal and epidermal(More)
A prospective study of 252 patients (average age 73, range 26-95) admitted to a regional general hospital over a 12-month period was carried out. 241 patients had stroke verified by the initial neurological examination and CT scan, and of these baseline data were not available on 27%. 34% died before or were not willing or able to provide data at follow-up.(More)
Introduction: NASA's return to the Moon by 2020 calls for sustainable human presence, suggesting that crew will make use of local resources for mission consumables. Generally referred to as In Situ Resource Utilization (ISRU), lunar regolith may be mined for small scale production of hydrogen, oxygen, water and volatiles. The Colorado School of Mines(More)
An algorithm is described for measuring the subjective, visual impact of 1-D defects (streaks and bands) in prints. A general approach to measurements of spatially localized image defects is described, attempting to directly match three stages of processing by the human observer: formation of the perceived image, identification of individual defects, and(More)
A group of seven ovariectomized female and three intact male Macaca radiata was compared to a matched control group of intact females and males during a breeding season. A second, replicate, experiment was conducted after the males had been switched between groups to partially control for seasonal effects and differences in the age of males. In the first(More)