Superconducting single-charge transistor in a tunable dissipative environment

We study a superconducting single-charge transistor, where the coherence of Cooper pair tunneling is destroyed by the coupling to a tunable dissipative environment. Sequential tunneling and cotunneling processes are analyzed to construct the shape of the conductance peaks and their dependence on the dissipation and temperature. Unexpected features are found due to a cross-over between two distinct regimes, one `environment-assisted' the other `environment-dominated'. Several of the predictions have been confirmed by recent experiments. The model and results apply also to the dynamics of Josephson junction quantum bits on a conducting ground plane, thus explaining the influence of dissipation on the coherence.Comment: Strongly revied version as accepted by Phys. Rev. Let

State Trends in Premiums and Deductibles, 2003-2009: How Building on the Affordable Care Act Will Help Stem the Tide of Rising Costs and Eroding Benefits

Examines 2003-09 state trends in family coverage premiums and deductibles for private employers. Looks at projected savings on premiums if the 2010 healthcare reform succeeds in slowing growth by 1 percentage point annually and weighs policy implications

Aiming Higher: Results From a State Scorecard on Health System Performance, 2009

Ranks states on thirty-eight indicators of healthcare access, prevention and treatment, avoidable hospital use and costs, equity, and healthy lives. Examines trends, including eroding adult insurance coverage, poor care coordination, and rising costs

VASCOMP 2. The V/STOL aircraft sizing and performance computer program. Volume 6: User's manual, revision 3

This report describes the use of the V/STOL Aircraft Sizing and Performance Computer Program (VASCOMP II). The program is useful in performing aircraft parametric studies in a quick and cost efficient manner. Problem formulation and data development were performed by the Boeing Vertol Company and reflects the present preliminary design technology. The computer program, written in FORTRAN IV, has a broad range of input parameters, to enable investigation of a wide variety of aircraft. User oriented features of the program include minimized input requirements, diagnostic capabilities, and various options for program flexibility

A Roadmap to Health Insurance for All: Principles for Reform

Presents principles for health insurance reform and compares the potential of three approaches -- tax incentives for the individual insurance market; mixed private-public group insurance with shared financing responsibility; and public insurance

Securing a Healthy Future: The Commonwealth Fund State Scorecard on Child Health System Performance, 2011

Ranks states on twenty indicators of healthcare access, affordability, prevention and treatment, potential for healthy lives, and health system equity for children. Examines the need for targeted initiatives and policy implications for better performance

Aiming Higher: Results From a State Scorecard on Health System Performance

Assesses state variation across key dimensions of health system performance -- access, quality, avoidable hospital use and costs, equity, and healthy lives -- and assigns overall state rankings as well as ranks on each dimension

Why Not the Best? Results From the National Scorecard on U.S. Health System Performance, 2011

Assesses the U.S. healthcare system's average performance in 2007-09 as measured by forty-two indicators of health outcomes, quality, access, efficiency, and equity compared with the 2006 and 2008 scorecards and with domestic and international benchmarks

Bending the Curve: Options for Achieving Savings and Improving Value in Health Spending

Analyzes the potential of fifteen federal health policy options to lower spending over the next ten years and yield higher value on investments in health care