R&D project scheduling when activities may fail

Categoricity may fail late

We build an example that generalizes [HS90] to uncountable cases. In particular, our example yields a sentence ψ ∈ L(2λ)+,ω that is categorical in λ, λ, . . . , λ but not in ik+1(λ) . This is connected with the Loś Conjecture and with Shelah’s own conjecture and construction of excellent classes for the ψ ∈ Lω1,ω case. 1 The Loś Conjecture, without excellence Early results on the Categoricity S...

Project Scheduling with Simultaneous Optimization, Time, Net Present Value, and Project Flexibility for Multimode Activities with Constrained Renewable Resources

Project success is assessed based on various criteria, every one of which enjoys a different level of importance for the beneficiaries and decision makers. Time and cost are the most important objectives and criteria for the project success. On the other hand, reducing the risk of finishing activities until the predetermined deadlines should be taken into account. Having formulated the problem ...

When Intuitions Fail

The title of this article looks in two different directions. It asks, "When do intuitions fail?" hoping to locate the conditions under which intuitions are likely to beunreliable.But it can also be the subordinate clause, of the question, "When intuitions fail, what can we do?": Both approaches, the remedial and the prophylactic, will be considered here. In 1951, Carl Voegelin and Zellig Harris...

When the Eyes Fail

When Checkpoints Fail

age during the segregation of sister chromatids. Checkpoints Monitor DNA Damage and Regulate Genetic studies have identified many of the compoCell Cycle Progression nents of checkpoints in the yeastsSaccharomyces cereA number of surveillance systems exist that interrupt visiae (reviewed in Murray, 1995) and Schizosaccharocell cycle progression when damage to the genome or myces pombe (reviewed ...