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SFI Working Papers contain accounts of scientific work of the author(s) and do not necessarily represent the views of the Santa Fe Institute. We accept papers intended for publication in peer-reviewed journals or proceedings volumes, but not papers that have already appeared in print. Except for papers by our external faculty, papers must be based on work(More)
Reliable and accurate estimation of instantaneous frequencies of physiological rhythms, such as heart rate, is critical for many healthcare applications. Robust estimation is especially challenging when novel unobtrusive sensors are used for continuous health monitoring in uncontrolled environments, because these sensors can create significant amounts of(More)
Four choice experiments were conducted with both sexes of the cichlid Pelvicachromis taeniatus using computer-manipulated stimuli of digital images differing in movement, body shape or colouration. The results show that computer animations can be useful and flexible tools in studying preferences of a cichlid with complex and variable preferences for(More)
and the participants of the CCC project for useful comments and suggestions. We thank the Italian CNR and the Sloan Foundation for research support. For an extensive review of measurement studies of computer price/performance ratios, including extensive 1 discussion of alternative definitions of " performance, " see Gordon (1989). On any definition of(More)
Interim Reports on work of the International Institute for Applied Systems Analysis receive only limited review. Views or opinions expressed herein do not necessarily represent those of the Instiute, its National Memeber Organizations, or other organizations supporting the work. Summary The paper analyses the properties and outcomes of competitive dynamics(More)
The Open University's repository of research publications and other research outputs Public policies and changing boundaries of firms in a " history-friendly " model of the co-evolution of the computer and semiconductor industries Journal Article (2008). Public policies and changing boundaries of firms in a " history-friendly " model of the co-evolution of(More)