Experiments have characterized the acoustics of axisymmetric high-speed jets at a variety of Mach numbers and velocities and at pressure-matched, overexpanded, and underexpanded conditions. The effect of an annular secondary  ow on noise emission was also investigated.The fully expanded jet velocity ranged from 630 to 920m/s and the fully expanded jet Mach number ranged from 1.27 to 1.75.The s...

In this paper we study the phase structure of two Sachdev-Ye-Kitaev models (L-system and R-system) coupled by a simple interaction, with imperfectly correlated disorder. When disorder systems are perfectly correlated, $J_{i_1\cdots i_q}^{(L)}=J_{i_1\cdots i_q}^{(R)}$, model is known to exhibit transition at finite temperature between two-black hole high-temperature traversable wormhole low temp...

Imperfectly competitive macroeconomic models typically assume a symmetric equilibrium with identical firms, despite the fact that most industries are characterised by substantial degrees of firm heterogeneity. We examine how inter-firm efficiency gaps affect fiscal policy effectiveness under monopolistic competition.

We show that hydrodynamic modeling coupled to the synthesis of the plasma emission, taking into account the response of a given instrument, provides very useful information for the interpretation of ar-ing coronal loops observed in the X-ray band. We show how the same model are would appear very diierent if observed with Yohkoh SXT and TRACE and how our approach can help in providing a very det...

account of the several works that came from Digby's pen and, if one might judge from his Private Memoirs, his over-active brain. But even in this involved field of authorship one fails to find a solution to the strange uncertainties and contradictions that made Digby, Digby. Even the "powder of sympathy" in all its implications affords no explanation. Nevertheless, Sir Kenelm could not well be ...