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Online Train Disposition: To Wait or Not to Wait?

We deal with an online problem arising from bus/tram/train disposition problems. In particular, we look at the case in which the delay is unknown and the vehicle can only wait in a station so as to minimize the passengers’ waiting time. We present deterministic polynomial-time optimal algorithms and matching lower bounds for several problem versions. In addition, all lower bounds also apply to ...

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2 By the end of his life, Armand Hammer, the prominent industrialist, had alienated virtually all of his friend s and family, driven his corporation into financial ruin, and tainted his public reputation. Nevertheless, he seemed quite pleased with himself: "There has never been anyone like me, and my likes will never be seen again"; "The brilliance of my mind can only be described as dazzling. ...

Early Alzheimer's disease diagnostics: Wait! Wait! Don't tell me!

N News from this year’s International Congress on Alzheier’s Disease (ICAD) meeting, attended by more than ,000 scientists worldwide, offered many clear-minded reaons to hope for longer-term advances in the war against lzheimer’s disease (AD). Meanwhile here at ground zero, wo developments combine to create an emotional and oral gridlock, a Catch-22 for our generation. On the one hand, a new Ma...

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More data, please!

Witwer (1 ) observes in his review of miRNA studies that “data submission was reported at publication for 40% of all articles.” Sadly, the problem of poor data reporting is neither new nor restricted to miRNA data. Poor access to data motivated the 2001 MIAME (minimum information about a microarray experiment) standards in the first place (2 ). In 2008, Ochsner et al. (3 ) reviewed microarray s...