Too Many Variables, Not Enough Equations

Consumer Search: Not Enough or Too Much?

We study search behavior in a generalized “secretary problem” environment in which consumers search sequentially for the best alternative from a known and finite set of multi-attribute alternatives. In contrast to most previous studies, we make no distributional assumptions about the quality of the alternatives. Rather, at each stage of the search the consumers are only assumed to be able to ra...

Not enough there, too many here: understanding geographical imbalances in the distribution of the health workforce

Access to good-quality health services is crucial for the improvement of many health outcomes, such as those targeted by the Millennium Development Goals (MDGs) adopted by the international community in 2000. The health-related MDGs cannot be achieved if vulnerable populations do not have access to skilled personnel and to other necessary inputs. This paper focuses on the geographical dimension...

Too Many Sticks, Not Enough Carrots: Limits and New Opportunities in American Crime Policy

A.E.C. with Not Too Many Models

Consider an a.e.c. (abstract elementary class), that is a class K of models with a partial order refining being submodels which satisfy the most basic properties of an elementary class. Our test question is trying to show that the function ˙ I(λ, K), counting the number of models in K of cardinality λ up to isomorphism, is " nice " , not chaotic, even not assuming it is 1, i.e. categoricity. We...

Collagen synthesis in atherosclerosis: too much and not enough.

Fibrillar collagen is a critical component of atherosclerotic lesions. Uncontrolled collagen accumulation leads to arterial stenosis, while excessive collagen breakdown combined with inadequate synthesis weakens plaques thereby making them prone to rupture. This review discusses cellular sources of collagen synthesis in atherosclerosis, local and systemic factors modulating collagen gene expres...