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Full-Text Articles in Physical Sciences and Mathematics

Gasoline Consumption Attributable To Gasoline Powered Watercraft Use In Maine, Jonathan Rubin, Charles Morrris, Suzanne K. Hart Nov 2001

Gasoline Consumption Attributable To Gasoline Powered Watercraft Use In Maine, Jonathan Rubin, Charles Morrris, Suzanne K. Hart

Economic Development

This study was conducted by the Margaret Chase Smith Center for Public Policy (MCSC) of the University of Maine at the request of the Maine Legislature’s Commission to Study Equity in the Distribution of Gas Tax Revenues Attributable to Snowmobiles, All-Terrain Vehicles and Watercraft. The Commission was created by the Legislature with a charge to collect and analyze information to determine an equitable distribution of gas tax revenues used in the enforcement and enhancement of programs supporting off-road vehicle use in Maine. The Commission concluded that snowmobiling, boating and ATV use has increased significantly over recent years and now constitutes …


Gasoline Consumption Attributable To Atvs In Maine, Jonathan Rubin, Charles Morrris Jun 2001

Gasoline Consumption Attributable To Atvs In Maine, Jonathan Rubin, Charles Morrris

Economic Development

This study was conducted by the Margaret Chase Smith Center for Public Policy (MCSC) of the University of Maine at the request of the Maine Legislature’s Commission to Study Equity in the Distribution of Gas Tax Revenues Attributable to Snowmobiles, All-Terrain Vehicles and Watercraft. The Commission was created by the Legislature with a charge to collect and analyze information to determine an equitable distribution of gas tax revenues used in the enforcement and enhancement of programs supporting off-road vehicle use in Maine. The Commission concluded that snowmobiling, boating and ATV use has increased significantly over recent years and now constitutes …


Ontology-Driven Geographic Information Systems, Frederico Torres Fonseca May 2001

Ontology-Driven Geographic Information Systems, Frederico Torres Fonseca

Electronic Theses and Dissertations

Information integration is the combination of different types of information in a framework so that it can be queried, retrieved, and manipulated. Integration of geographic data has gained in importance because of the new possibilities arising from the interconnected world and the increasing availability of geographic information. Many times the need for information is so pressing that it does not matter if some details are lost, as long as integration is achieved. To integrate information across computerized information systems it is necessary first to have explicit formalizations of the mental concepts that people have about the real world. Furthermore, these …


Strategies For Handling Spatial Uncertainty Due To Discretization, Thomas Windholz May 2001

Strategies For Handling Spatial Uncertainty Due To Discretization, Thomas Windholz

Electronic Theses and Dissertations

Geographic information systems (GISs) allow users to analyze geographic phenomena within areas of interest that lead to an understanding of their relationships and thus provide a helpful tool in decision-making. Neglecting the inherent uncertainties in spatial representations may result in undesired misinterpretations. There are several sources of uncertainty contributing to the quality of spatial data within a GIS: imperfections (e.g., inaccuracy and imprecision) and effects of discretization. An example for discretization in the thematic domain is the chosen number of classes to represent a spatial phenomenon (e.g., air temperature). In order to improve the utility of a GIS an inclusion …


Late Maritime Woodland (Ceramic) And Paleoindian End Scrapers: Stone Tool Technology, Pamela J. Dickinson Jan 2001

Late Maritime Woodland (Ceramic) And Paleoindian End Scrapers: Stone Tool Technology, Pamela J. Dickinson

Electronic Theses and Dissertations

Archaeologists tend to view lithic assemblages from a predominately morphological perspective, stressing the importance of the fluted point as the defining characteristic of the Paleoindian culture period (ca. 10,000 years B.P.). In applying such a characteristic, Paleoindian sites have been identified throughout the Northeast. However, there are no identified Paleoindian sites in New Brunswick. It is possible that some sites are largely ignored or thought to lack a Paleoindian component if a fluted point is absent. If such sites are being overlooked, then the database may under represent the Paleoindian culture period. Spurred end scrapers commonly occur in known Paleoindian …


Lithic Analysis Of Chipped Stone Artifacts Recovered From Quebrada Jaguay, Peru, Benjamin R. Tanner Jan 2001

Lithic Analysis Of Chipped Stone Artifacts Recovered From Quebrada Jaguay, Peru, Benjamin R. Tanner

Electronic Theses and Dissertations

Quebrada Jaguay, a Terminal Pleistocene to Early Holocene archaeological site in Southern Peru, is recognized as one of the few sites in the Americas that features evidence of a Paleoindian maritime adaptation. Faunal remains from this multicomponent shell midden include shellfish, fish, crustaceans, and shorebirds. Lithic remains recovered from the site over the course of two field seasons (1996 and 1999) provide information about the technology of the site's inhabitants and afford comparisons with other contemporary sites. These lithic materials provide answers to questions dealing with lithic procurement and production strategies and questions about relationships with other groups along the …


Easements And Conservation Policy In The North Maine Woods, David J. Lewis Jan 2001

Easements And Conservation Policy In The North Maine Woods, David J. Lewis

Maine Policy Review

Recently Maine has embarked on a new policy direction in its use of conservation easements to protect large tracts of commercial timberland. David Lewis argues that the effectiveness of using easements as a long-term conservation policy depends on many factors that may not be fully considered in the decision-making process currently used in choosing easements for landscape-scale conservation. Lewis indicates that the root of the problem lies in the fact that the state lacks a comprehensive policy describing the conservation goals desired in the North Woods. Before progressing further, Lewis suggests that the ultimate goals of conservation need to be …