Population Cycles Revisited

Schumpeter ’ s ‘ Business Cycles ’ Revisited

Hicks' trade cycle revisited: cycles and bifurcations

In the Trade Cycle, Hicks introduced the idea that endogenous fluctuations could be coupled with a growth process via nonlinear processes. To argue for this hypothesis, Hicks used a piecewise-linear model. This paper shows the need for a reinterpretation of Hicks’ contribution in the light of a more careful mathematical investigation. In particular, it will be shown that only one bound is neede...

The Pezcoller lecture: cancer cell cycles revisited.

Genetic lesions that disable key regulators of G1 phase progression in mammalian cells are present in most human cancers. Mitogen-dependent, cyclin D-dependent kinases (cdk4 and cdk6) phosphorylate the retinoblastoma (Rb) tumor suppressor protein, helping to cancel its growth-inhibitory effects and enabling E2F transcription factors to activate genes required for entry into the DNA synthetic ph...

Optimal Population Coding , Revisited

Cortical circuits perform the computations underlying rapid perceptual decisions within a few dozen milliseconds with each neuron emitting only a few spikes. Under these conditions, the theoretical analysis of neural population codes is challenging, as the most commonly used theoretical tool – Fisher information – can lead to erroneous conclusions about the optimality of different coding scheme...

Coyote Population Processes Revisited

It appears that coyote (Canrs latrans) abundance 1s determined pr~mal-~ly b avallabil~ty of food (prey) as mediated through social dominance h~erarchles and a telritol-ial land tenure system. This is reflected in rates of reproduction, dispersal, and mo~tality, with survival ofjuveniles a major factor Suggestions for a new gencrat~on of simulation niodels to explore coyote population funct~ons ...