Consider the K-user Gaussian interference channel with static channel coefficients. Recent efforts have characterized the capacity region to within a constant gap for several important special cases, including two-user, very weak, many-to-one, and one-to-many interference channels. The general case remains open, primarily due to the challenge of characterizing the achievable rate for interferen...

[1] The aerodynamic friction between air and sea is an important part of the momentum balance in the development of tropical cyclones. Measurements of the drag coefficient, relating the tangential stress (frictional drag) between wind and water to the wind speed and air density, have yielded reliable information in wind speeds less than 20 m/s (about 39 knots). In these moderate conditions it i...

P. A. Belov, R. Marqués, S. I. Maslovski, I. S. Nefedov, M. Silveirinha, C. R. Simovski, and S. A. Tretyakov Radio Laboratory, Helsinki University of Technology, P.O. Box 3000, FIN-02015 HUT, Finland Physics Department, St. Petersburg Institute of Fine Mechanics and Optics, Sablinskaya 14, 197101 St. Petersburg, Russia Department of Electronics and Electromagnetism, Facultad de Fı́sica, Universi...

A strong transcription enhancer was identified in the genomic DNA (235 kb) of human cytomegalovirus (HCMV), a ubiquitous and severe pathogen of the herpesvirus group. Cotransfection of enhancerless SV40 DNA with randomly fragmented HCMV DNA yielded two SV40-HCMV recombinant viruses that had incorporated overlapping segments of HCMV DNA to substitute for the missing SV40 enhancer. Within HCMV, t...

Since double layers observed in space and in simulations are rarely if every static, considerable attention has been given to studies of motions of double layers in the laboratory. Extensive reviews have recently been published of the dynamical properties of very strong double layers (eV/kTe 1000) in a Q machine (Sato et al., 1983; Iizuka et al., 1983) and strong double layers (eV/kTe 10) in a ...

The dipole coupling strength g between cavity photons and quantum well excitons determines the regime of light matter coupling in quantum well microcavities. In the strong coupling regime, a reversible energy transfer between exciton and cavity photon takes place, which leads to the formation of hybrid polaritonic resonances. If the coupling is further increased, a hybridization of different si...

We investigate the effect of new stellar models taking rotation into account and computed for a metallicity Z = 10 on the chemical evolution of the earliest phases of the Milky Way. These models were computed under the assumption that the ratio of the initial rotation velocity to the critical velocity of stars is roughly constant with metallicity. This naturally leads to faster rotation at lowe...

We study the free energy of the Parabolic Anderson Model, a time-continuous model of directed polymers in random environment. We prove that in dimension 1 and 2, the free energy is always negative, meaning that very strong disorder always holds. The result for discrete polymers in dimension two, as well as better bounds on the free energy on dimension 1, were first obtained by Hubert Lacoin in ...

We report on the finding of the strongest Hα emission – pseudoequivalent width of 705 Å – known so far in a young, late type dwarf. This object, named as SOri 71, is a substellar candidate member of the 1–8Myr star cluster σOrionis. Due to its overluminous location in color-magnitude diagrams, SOri 71 might be younger than other cluster members, or a binary of similar components. Its mass is in...