Hsueh-Ling Huynh

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When payo s from di erent actions are unknown, agents use their own past experience as well as the experience of their neighbors to guide their current decision making. This paper develops a general framework to study the relationship between the structure of information ows and the process of social learning. We show that in a connected society, local(More)
The antiestrogen, ICI 182780 (ICI) proves to be clinically useful for the treatment of estrogen receptor positive breast tumours. We report the assessment of the in vivo and in vitro effects of ICI on apoptosis of breast epithelial cells. In vivo, administration of rats with ICI for 3 weeks resulted in a reduction in the size of the lobular structures with(More)
This paper consists of two parts. In the first part, we reformulate the work of E. Leuzinger on trigonometry in noncom pact symmetric spaces. In the second part, we outline an altemative method using invariants of the isotropy group representation. Appropriately formulated, these methods apply to both compact and noncompact symmetric spaces. This work is(More)
This paper uses the example of an exam to model multi-dimensional search under a deadline. When the dimension is two, an order-invariance property allows simple characterization of the optimal search policy. Behavior is shown to be highly sensitive to changes in the deadline, and a wide variety of policies can be rationalized as the length of the deadline(More)
Determinants of Intestinal Permeability in Healthy First Degree Relatives of Crohn’s Disease Patients, W. Turpin, D. Kevans, K. Shestopaloff, M. Smith, D. Guttman, M. Silverberg, W. Xu, A. Paterson, and K. Croitoru University of Toronto, Toronto, ON, Canada Mount Sinai Hospital, Toronto, ON, Canada Dalla Lana School of Public Health, Toronto, ON, Canada(More)
This dissertation studies moral hazard problems and an information acquisition problem in dynamic economic environments. In chapter 1, I study a continuous-time principal-agent model in which a risk-neutral agent protected by limited liability exerts costly efforts to manage a project for her principal. Unobserved risk-taking by the agent is value-reducing(More)
Electronic commerce is widely expected to promote “friction-free” capitalism, with consumers sending software agents to scour the Net for the best deals. Many distribution chains will indeed be simplified and costs substantially reduced. However, we are also likely to see the creation of artificial barriers in electronic commerce, designed by sellers to(More)
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