Acknowledgements First and foremost, I would like to thank my supervisor, Prof. David Horn, who has guided me through both my M.Sc. and Ph.D. studies. His supervising approach allows for autonomous research and exploration but at the same time keeps careful supervision and guidance. This approach enabled me to develop independent thought, while at the same time know that his door is always open...

Distributed Greedy Coloring is an interesting and intuitive variation of the standard Coloring problem. It still consists in coloring in a distributed setting each node of a given graph in such a way that two adjacent nodes do not get the same color, but it adds a further constraint. Given an order among the colors, a coloring is said to be greedy if there does not exist a node for which its as...

Winston Churchill P ACE High School is an inner city community-based charter school for at risk students in the Cincin­ nati, Ohio area. As such, it is part of the Ohio public school structure and receives its money directly from the Ohio Department of Education. The school, now in its third year of operation, has an enrollment of 400 students. Students at­ tending PACE High School are at risk ...

Dequalinium has previously been shown to be an anticarcinoma agent (M. J. Weiss et al., Proc. Nati. Acad. Sci. USA, 84: 5444-5448, 1987). The present study demonstrates that it can inhibit protein kinase C-ß, isolated from an overproducing cell line with a 50% inhibitory concentra tion of 8-15 MM-Further examination of the inhibition by using structural analogues of dequalinium reveals that th...

Lan ethos, an indigenous style. At the Fermi Nati nal Accelerator Laboratory the style is utilitarian chic. Fermilab delights in the ingenious and elegant use of the found object, the industrial artifact converted to some higher purpose, hi the 1970s, while a rival European laboratory quarried Carrara marble for shielding in a large detector, Fermilab filled a similar need by scrounging ar mor ...

An astoundingly high frequency of micrometastatic cells have been found in bone marrow aspirates of patients with colon carcinomas (G. Schlimok et «/., J. Clin. Oncol., *: 831-837,1990), although these tumors very rarely metastasize to the skeleton. This observation has raised questions about the malignant potential of such cells. In a first attempt to characterize this potential, we have asse...

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3E. W. Marchand and E. Wolf, "Generalized radiometry for radiation from partially coherent sources," Opt. Commun. 6, 305-308 (1972). 4 E. W. Marchand and E. Wolf, "Radiometry with sources of any state of coherence," J. Opt. Soc. Am. 64, 1219-1226 (1974). 5 E. Wolf and W. H. Carter, "Angular distribution of radiant intensity from sources of different degrees of spatial coherence," Opt. Commun. 1...

We have previously obtained, by exposure to near continuous increas ing concentrations of cisplatin, a panel of human ovarian cancer cell lines that exhibit a wide range of primary resistance to the drug (9to >400fold). These cells had strikingly increased (4to 50-fold) levels of glutathione (GSH) as compared with the drug-sensitive cells of origin (A. K. Godwin et al., Proc. Nati. Acad. Sci. U...