Quantum wideband traveling-wave analysis of a degenerate parametric amplifier

We develop a wideband traveling-wave formalism for analyzing quantum mechanically a degenerate parametric amplifier. The formalism is based on spatial differential equations-spatial Langevin equations-that propagate temporal Fourier components of the field operators through the nonlinear medium. In addition to the parametric nonlinearity, the Langevin equations include absorption and associated fluctuations, dispersion (phase mismatching), and pump quantum fluctuations. We analyze the dominant effects of phase mismatching and pump quantum fluctuations on the squeezing produced by a degenerate parametric amplifier

Product Variety and Demand Uncertainty

We show that demand uncertainty leads to vertical product differentiation even when consumers are homogeneous. When a firm anticipates that its inventory or capacity may not be fully utilized, product variety can reduce its expected costs of excess capacity. When the firm offers a continuum of product varieties, the highest quality product has the highest profit margins but the lowest percentage margin, while the lowest quality product has the highest percentage margin but the lowest absolute margin. We derive these results in both a monopoly model and a variety of different competitive models. We conclude with a discussion of empirical predictions together with a brief discussion of supporting evidence available from marketing studies.

Improving Employee Engagement through the Development of an Enterprise Performance Management System

There is ample evidence of our health care delivery system relying heavily on value-based outcomes. The increased focus on outcomes has required health care organizations to adjust how they approach data and how they successfully implement performance management systems. These performance management systems help the organization identify, measure, and report the organization’s performance at an enterprise level using key performance indicators clearly linked to the organization’s overall strategy. As one organization began implementing an enterprise performance management system, the goal of this project was to show how participating in projects with that level of strategic impact can lead to improved engagement scores