Tire-breeding mosquitoes of public health importance along an urbanisation gradient in Buenos Aires, Argentina

Used vehicle tires are a source of mosquito vectors and a means of their introduction and expansion. With the aim of assessing the effects of urbanisation on the main mosquito vectors in temperate Argentina, the infestation levels of Aedes aegypti (L.) and Culex pipiens L. were studied in used tires from highly urbanised cities to low-urbanised small towns in Buenos Aires. Immatures of both species accounted for 96% of the 9,722 individuals collected; the total individuals collected represented seven species. The percentage of water-filled tires containing mosquitoes [container index (CI)] was 33% and the percentage of infested sites [site index (SI)] was 65.2%. These indexes decreased significantly from low to high urbanisation levels for both mosquito species. The relative abundance (RA) of Ae. aegypti immatures was slightly higher toward large cities, but showed no difference for Cx. pipiens. The CI of shaded tires was significantly higher than the CI of exposed tires for both mosquito species. There was no difference in RA values between shaded and sunlit tires. The CI and the SI were highest during the summer across the urbanisation levels, except for Cx. pipiens, which continued to increase during the autumn in small towns. Results related to urbanisation gradient, sunlit exposure and seasonality are discussed.

The Relevance of the Principal-Agent Model for the Analysis of Public Policies : Do the Objectives Conflict ?

This paper aims to provide empirical support for the use of the principal-agent framework in the analysis of public sector and public policies. After reviewing the different conditions to be met for a relevant analysis of the relationship between population and government using the principal-agent theory, our paper focuses on the assumption of conflicting goals between the principal and the agent. A principal-agent analysis assumes in effect that inefficiencies may arise because principal and agent pursue different goals. Using data collected during an amalgamation project of two Swiss municipalities, we show the existence of a gap between the goals of the population and those of the government. Consequently, inefficiencies as predicted by the principal-agent model may arise during the implementation of a public policy, i.e. an amalgamation project. In a context of direct democracy where policies are regularly subjected to referendum, the conflict of objectives may even lead to a total failure of the policy at the polls.

Iowa Department of Public Defense, Agency Performance Plan

Annual Report, Agency Performance Plan

Iowa Department of Public Health Agency Performance Plan

Agency Performance Plan

Iowa Department of Public Safety Agency Performance Plan

Agency Performance Plan

Missing Persons Bulletin, Iowa Department of Public Safety, July 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, June 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, May 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, April 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, February 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, January 2002

Monthly newsletter for public safety

Missing Persons Bulletin, Iowa Department of Public Safety, September 2002

Monthly newsletter for public safety. Information in this document has been redacted at the request of one of the named individuals. To examine the unedited document, please contact Iowa Library Services / State Library of Iowa – Main Library, 1112 E. Grand Avenue, Des Moines, IA 50319, (515) 242-6542, 1-800-248-4483.