Hospital Provision, Charity and Public Responsibility in Edwardian Pontypridd
In: Llafur: journal of Welsh people's history, Band 8, Heft 3, S. 53-66
ISSN: 0306-0837
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In: Llafur: journal of Welsh people's history, Band 8, Heft 3, S. 53-66
ISSN: 0306-0837
In: The Fletcher forum: a journal of graduate studies in internat. affairs, Band 11,N. 2 (S, S. 347
ISSN: 0147-0981
In: Millennium: journal of international studies, Band 11, Heft 3, S. 259-261
ISSN: 1477-9021
In: Decision sciences, Band 36, Heft 3, S. 397-425
ISSN: 1540-5915
ABSTRACTThe scenario of established business sellers utilizing online auction markets to reach consumers and sell new products is becoming increasingly common. We propose a class of risk management tools, loosely based on the concept of financial options that can be employed by such sellers. While conceptually similar to options in financial markets, we empirically demonstrate that option instruments within auction markets cannot be developed employing similar methodologies, because the fundamental tenets of extant option pricing models do not hold within online auction markets. We provide a framework to analyze the value proposition of options to potential sellers, option‐holder behavior implications on auction processes, and seller strategies to write and price options that maximize potential revenues. We then develop an approach that enables a seller to assess the demand for options under different option price and volume scenarios. We compare option prices derived from our approach with those derived from the Black‐Scholes model (Black & Scholes, 1973) and discuss the implications of the price differences. Experiments based on actual auction data suggest that options can provide significant benefits under a variety of option‐holder behavioral patterns.
In: Cambridge review of international affairs, Band 3, Heft 2, S. 55-76
ISSN: 1474-449X
In: Journal of policy modeling: JPMOD ; a social science forum of world issues, Band 20, Heft 4, S. 461-481
ISSN: 0161-8938
In: System dynamics review: the journal of the System Dynamics Society, Band 20, Heft 2, S. 163-178
ISSN: 1099-1727
AbstractModels of population dynamics are frequently used in the management and conservation of wildlife populations. They provide a powerful method of quantitatively assessing a population's risk of decline and determining the potential to reverse the decline. Models from recent studies of managed populations are presented. The first model simulates the spectacled bear populations maintained in American Zoo and Aquarium Association (AZA) zoos. The second model simulates the grizzly bear population in the Greater Yellowstone Ecosystem (GYE). The article concludes with a discussion of system dynamics modeling in the larger context of population dynamics modeling. Copyright © 2004 John Wiley & Sons, Ltd.