SO2 Allowance Trading: How Experience and Expectations Measure Up

The SO2 trading program has achieved reductions in emissions ahead of schedule, with allowance prices below the marginal costs that were anticipated for the program. This paper explores the experience with the program and proposes a taxonomy of reasons why allowance prices are low. The overarching reason is that the most costly investments to accommodate full emission reductions have been successfully delayed. Application of a discount rate to these long run marginal costs yields an estimate of allowance price close to that observed today. Several factors have contributed to the delay in bearing these costs, and helped to reduce their magnitude. One group of factors stems from market fundamentals, especially the cost of rail transport of low sulfur coal. A second group includes the influences of state and federal regulators. A third group includes distinctions from the "imagined" program compared to that which was actually been enacted.

Changing Productivity in U.S. Petroleum Exploration and Development

This study analyzes sources of productivity change in petroleum exploration and development in the United States over the last ten years. There have been several major developments in the industry over the last decade that have led to dramatic reductions in the cost of finding and developing oil and natural gas resources. While some of the cost savings are organizational and institutional in nature, the most important changes are in the application of new technologies used to find and produce oil and gas: 3D seismology, horizontal drilling, and deepwater drilling. Not all the innovation is endogenous to the industry; some rests on outside advances (such as advances in high-speed computing that enabled 3D seismology), as well as learning-by-doing. The increased productivity of mature petroleum provinces like the U.S. helps to maintain competition in the world oil market as well as enhance domestic industry returns.

Milton TIME Final Report

Our main focus with this project was to hold a well-attended event in Milton, PA on Earth Day (April 22nd) that raised awareness for TIME’s “The Landscape of Main Street” Museum. We wanted this event to be accessible to all ages and marketed towards, but not limited to, the Milton community. Additionally, we hoped this event would generate attendance to the museum, educate attendees (especially children) on Milton’s history and ecology, get local businesses involved, and ultimately generate excitement within the community; getting residents more involved and bringing people together. We planned that this event would also include a brochure- guided walking tour for Milton residents; one on the ecology of the island and one on the history of Milton downtown

Global Perturbation of Initial Geometry in a Biomechanical Model of Cortical Morphogenesis

Cortical folding pattern is a main characteristic of the geometry of the human brain which is formed by gyri (ridges) and sulci (grooves). Several biological hypotheses have suggested different mechanisms that attempt to explain the development of cortical folding and its abnormal evolutions. Based on these hypotheses, biomechanical models of cortical folding have been proposed. In this work, we compare biomechanical simulations for several initial conditions by using an adaptive spherical parameterization approach. Our approach allows us to study and explore one of the most potential sources of reproducible cortical folding pattern: the specification of initial geometry of the brain.Comment: 4 pages 2 columns (IEEE style), 41st EMB Conferenc

Energia e stili di vita: il dibattito americano

Ricerca, nell'ambito del Programma "Futurama", sul dibattito in tema di energia e prospettive future, con riferimento al contesto americano.- Indice #5- Introduzione #7- Cap.I Implicazioni economiche dell'aumento dei prezzi dell'energia #10- Cap.II Effetti sociali dell'aumento dei prezzi dell'energia #39- Cap.III Implicazioni politiche dell'aumento dei prezzi dell'energia #58- Bibliografia #7

Polarization preserving ultra fast optical shutter for quantum information processing

We present the realization of a ultra fast shutter for optical fields, which allows to preserve a generic polarization state, based on a self-stabilized interferometer. It exhibits high (or low) transmittivity when turned on (or inactive), while the fidelity of the polarization state is high. The shutter is realized through two beam displacing prisms and a longitudinal Pockels cell. This can represent a useful tool for controlling light-atom interfaces in quantum information processing.Comment: 4 pages, 6 figure