Intrinsic quadrupole moment of the nucleon

We address the question of the intrinsic quadrupole moment Q_0 of the nucleon in various models. All models give a positive intrinsic quadrupole moment for the proton. This corresponds to a prolate deformation. We also calculate the intrinsic quadrupole moment of the Delta(1232). All our models lead to a negative intrinsic quadrupole moment of the Delta corresponding to an oblate deformation.Comment: 17 pages, 5 figure

Meson and Quark Degrees of Freedom and the Radius of the Deuteron

The existing experimental data for the deuteron charge radius are discussed. The data of elastic electron scattering are inconsistent with the value obtained in a recent atomic physics experiment. Theoretical predictions based on a nonrelativistic description of the deuteron with realistic nucleon-nucleon potentials and with a rather complete set of meson-exchange contributions to the charge operator are presented. Corrections arising from the quark-gluon substructure of the nucleon are explored in a nonrelativistic quark model; the quark-gluon corrections, not accounted for by meson exchange, are small. Our prediction for the deuteron charge radius favors the value of a recent atomic physics experiment.Comment: 20 pages, LaTeX, 4 Postscript figures, to appear in Few-Body-System

Macroscopic tunneling of a membrane in an optomechanical double-well potential

The macroscopic tunneling of an optomechanical membrane is considered. A cavity mode which couples quadratically to the membranes position can create highly tunable adiabatic double-well potentials, which together with the high Q-factors of such membranes render the observation of macroscopic tunneling possible. A suitable, pulsed measurement scheme using a linearly coupled mode of the cavity for the verification of the effect is studied.Comment: 5 pages, 5 figure

Infrastructure for Smart Cities: The Killer Application for Event-Based Computing

Infrastructures for smart cities are considered a potential killer app for event-based computing. Event services are a crucial part of the infrastructure. The complexity of the event services is compounded by the richness of the events, the number of (mobile) sensors and devices, heterogeneity, requirements for seamless integration, unstable communication and interference, quality of service requirements, the need for context awareness and device orchestration and self-X properties

The Duquesne Opinion: A Practitioner\u27s Comment

Drs. Kolbe and Tye demonstrate that modern utility regulatory systems expose investors to significant risks with no compensating upside opportunities. While this is not a particularly new insight, the situation is obviously exacerbated when regulators, either by decisional or legislative changes, switch in midstream from one mode of regulation to another or impose new, previously unanticipated restrictions on rate recovery. In this respect, Duquesne serves as a satisfactory takeoff point, although not one necessary for the underlying problem discussed by Kolbe and Tye. Whether or not Duquesne changed the law in any material respect, or, more precisely, authorized Pennsylvania to change the law, is not quite the issue. The inherent regulatory bias plainly exists and whether it is a result of new rules or has been there for a long time does not seem critical

Electric Transmission Lines and the Environment

One of the significant outgrowths of the current interest in environmental questions is the increasing prominence of aesthetics qua aesthetics as a subject for judicial and administrative concern. A major area of litigation, and one which has by its very nature lent itself to an analysis of the significance, and viability, of purely aesthetic issues, has involved high voltage transmission lines