Relativistic Effects and the Role of Heavy Meson Exchange in Deuteron Photodisintegration

Relativistic effects and the role of heavy meson exchange in deuteron photodisintegration are studied systematically for photon energies below the pion production threshold. In a (p/M)-expansion, all leading order relativistic one-body and pi-exchange as well as all static heavy meson exchange currents consistent with the Bonn OBEPQ model are included. In addition, one- and two-body boost effects have been investigated. Sizeable effects from the various two-body contributions beyond pi-exchange have been found in almost every observable considered, i.e., differential cross section and single polarization observables.Comment: 14 pages revtex including 8 postscript figure

Pass-through, profits and the political economy of regulation

Government regulation, such as the pricing of externalities, often raises the unit costs of regulated firms, and its impact on their profits is important to its political economy. We introduce a reduced-form model (“GLM”) that nests existing models of imperfect competition under weaker assumptions. We show how a firm's cost passthrough is a sufficient statistic for the profit impact of regulation. We apply the GLM to carbon pricing for US airlines. We find large inter-firm heterogeneity in pass-through, even for a uniform cost shock. The GLM allows us to sidestep estimation of a consumer demand system, firm markups and conduct parameters. We derive the second-best emissions tax including lobbying a government “for sale”

Progress in the Theory of Electron-Beam Deflection

Analysis, simulation, and design of electron-beam-deflection systems are reviewed in light of the current state of theoretical understanding. A brief review of the physical principles is followed by a detailed discussion of electrostatic, magnetostatic, mixed-field, traveling-wave, and scan-expansion systems. Each methodology is examined from a triple perspective: calculation of electromagnetic fields, calculation of electron trajectories, and calculation of the ensemble of trajectories forming the beam. Applications discussed include deflectors for television displays, lithography, scanning microscopes, and CRT oscillography. Developments of the last ten years are stressed, thereby supplementing and updating the author\u27s previous review on this subject. In field calculation, recent developments in the use of numerical methods on computers dominate. These methods include finite-difference, finite-element, and charge-density or integral-equation techniques. In trajectory calculations, increasing use of numerical integration as well as improvements and extensions of the aberration theory are found. In treatment of the beam bundle, the growing sophistication of numerical deflected-beam models has lead to increased use of aberration figures, current-density plots, and phase-space methods

Business and Marketing Education Doctoral Students\u27 Perceptions of Their Profession

The future of the business and/or marketing education profession is dependent upon its future leadership. Many of those leaders are currently engaged in or have recently graduated from related doctoral programs. This study examined 22 doctoral students/recent graduates preparing for a career in business and/or marketing education and solicited their opinions on the future of their profession. Participants were surveyed and asked to identify what they believe to be true about future focus of instructional content, methods of teacher preparation, their commitment to their profession, and their opinions regarding the future of business and marketing education. Participants were in general agreement about future focus of instructional content and teacher preparation methods. While they tend to be committed to the profession, they had varying opinions of what that consists of; some will rely heavily on practitioner memberships, conferences, and publications, while others will focus more on those elements dedicated to scholarly endeavors

Northern peripheries

Guest editors' introductio