Paul Ledoux

QnAs with Joseph LeDoux.

In his 1933 inaugural address to the American people, President Franklin Roosevelt attempted to rouse the nation out of the stultifying Depression with his famous aphorism on fear as a self-fulfilling end. Decades later, a scientific understanding of fear continues to remain elusive, despite the unraveling of brain circuits triggered when people respond to a raft of dangers. That is, in part, b...

پل کلودل Paul Claudel

Albert Benveniste , Paul Caspi , Paul

In this paper, we present a theory of synchronous data-ow languages. Our theory is supported by both some heuristic analysis of applications and some theoretical investigation of the data-ow paradigm. Our model covers both behavioural and operational aspects, and allows both synchronous and asynchronous styles of implementation for synchronous programs. This model served as a basis to establish...

Ledoux-convection in protoneutron stars – a clue to supernova nucleosynthesis

Two-dimensional (2D) hydrodynamical simulations of the deleptonization of a newly formed neutron star (NS) were performed. Driven by negative lepton fraction and entropy gradients, convection starts near the neutrinosphere about 20– 30 ms after core bounce, but moves deeper into the protoneutron star (PNS), and after about one second the whole PNS is convective. The deleptonization of the star ...

Paul Falkowski

team looked at satellite measures of sea surface temperatures for the wintering grounds of 24 humpback whale populations around the world. In all cases, the animals were opting for waters between 24 and 25oC. The whales in this study would have had to continue north of the Equator to find water this warm. Rasmussen believes that a high enough water temperature is crucial for them to breed. “It’...