Oct 2004
Author(s): Langhammer, Rolf J.; Sturzenegger, Federico; Sanguinetti, Pablo; Schweickert, Rainer; Licandro, Omar; Fanelli, José M.; Ventura, Jaume
Latin American and Caribbean countries are today at an important juncture in their international economic relations. Since the end of the 1980s the countries of the region have been pursuing a…
Apr 2000
Author(s): Vaughan, William J.; Darling, Arthur H.
One of the first questions that has to be answered in the survey design process is "How many subjects should be interviewed?" The answer can have significant implications for the cost of…
Mar 2000
Author(s): Vaughan, William J.; Rodríguez, Diego J.
In this note, the authors detail the mechanics of the nonparametric mean and variance calculations of finding willingness to pay (WTP) estimates. There are (at least) three nonparametric estimators…
Jun 1999
Author(s): Vaughan, William J.; Russell, Clifford S.; Rodríguez, Diego J.; Darling, Arthur H.
This study uses contingent valuation (CV) methods to estimate the benefit of an environmental water quality project of the Tietê River and its tributaries that flow through the São Paulo, Brazil,…
Dec 1997
Author(s): Malarín, Hector R.; Vaughan, William J.
In this best practice paper a mixed integer optimization approach to the selection of sanitary landfill site sizes and locations in a regional context is explained and illustrated using stylized cost…