Peter C Roberts

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  • Tracy R Lewis, Huseyin Yildirim, Paul L Joskow, George A Rozanski, Peter C Roberts, Calvin C Burwell +1 other
  • 2002
In many important high-technology markets, including software development, data processing, communications, aeronautics, and defense, suppliers learn through experience how to provide better service at lower cost. This paper examines how a buyer designs dynamic competition among rival suppliers to exploit learning economies while minimizing the costs of(More)
OBJECTIVE To report range of motion at the hip and ankle in male and female ballet dancers compared with controls. DESIGN Cross-sectional cohort study with convenience control sample. SETTING National classical ballet school in Australia. PARTICIPANTS Thirty-three female and 30 male full-time ballet students of mean (SD) age 16.9 (0.8) and 18.0 (1.4)(More)
Objectives To study the vascularity and bone metabolism of the femoral head/neck following hip resurfacing arthroplasty, and to use these results to compare the posterior and the trochanteric-flip approaches. Methods In our previous work, we reported changes to intra-operative blood flow during hip resurfacing arthroplasty comparing two surgical approaches.(More)
Background: Measurement of cardiac output and extravascular lung water in critically ill patients using femoral artery double-indicator dilution involves femoral artery catheterization. The potential risk of vascular compromise to the limb may be exacerbated in patients receiving vasopressors. The utility of scanning laser Doppler flowmetry to measure(More)
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