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Full-Text Articles in Physical Sciences and Mathematics

Cnh: Fine-Scale Dynamics Of Human Adaptation In Coupled Natural And Social Systems: An Integrated Computational Approach Applied To Three Fisheries, James A. Wilson, James Acheson, Robert Steneck, Yong Chen, Teresa R. Johnson Dec 2014

Cnh: Fine-Scale Dynamics Of Human Adaptation In Coupled Natural And Social Systems: An Integrated Computational Approach Applied To Three Fisheries, James A. Wilson, James Acheson, Robert Steneck, Yong Chen, Teresa R. Johnson

University of Maine Office of Research Administration: Grant Reports

The purpose of this project is to gain a better understanding of the way competition between individual fishermen lead to the emergence of private incentives and informal social arrangements that are (or are not) consistent with conservation of the resource. These informal arrangements and incentives are important because they help us understand the extent to which private interests might strengthen or weaken on-going resource management and, consequently, the sustainability of coupled human and natural systems. The broad hypothesis driving the study is that the informal social structure that emerges from competitive interactions among fishermen reflects the particular circumstances of the …


Spatial Population Models In Spatiotemporally Structured Environments, David Hiebeler Nov 2011

Spatial Population Models In Spatiotemporally Structured Environments, David Hiebeler

University of Maine Office of Research Administration: Grant Reports

Spatial effects, such as habitat fragmentation and the location and size of disturbance events, play a key role in the dynamics of populations. This is true in natural populations (such as herbs living under a forest canopy) as well as human-dominated systems (for example, crop pests in agricultural landscapes). Focusing on the development of spatial population models, the project seeks to better understand how and why spatially autocorrelated disturbances affect the dynamics of populations with mixtures of short- and long-distance dispersal. A variety of disturbances are considered, including (1) static disturbance, representing habitat heterogeneity across a landscape; (2) short-term disturbance …


Collaborative Research: Microparticle/Tephra Analysis Of The Wais Divide Ice Core, Karl J. Kreutz, Andrei V. Kurbatov, Mark Wells, Paul Andrew Mayewski Sep 2011

Collaborative Research: Microparticle/Tephra Analysis Of The Wais Divide Ice Core, Karl J. Kreutz, Andrei V. Kurbatov, Mark Wells, Paul Andrew Mayewski

University of Maine Office of Research Administration: Grant Reports

This award supports a project to perform continuous microparticle concentration and size distribution measurements (using coulter counter and state-of-the-art laser detector methods), analysis of biologically relevant trace elements associated with microparticles (Fe, Zn, Co, Cd, Cu), and tephra measurements on the WAIS Divide ice core. This initial three-year project includes analysis of ice core spanning the instrumental (~1850-present) to mid- Holocene (~5000 years BP) period, with sample resolution ranging from subannual to decadal. The intellectual merit of the project is that it will help in establishing the relationships among climate, atmospheric aerosols from terrestrial and volcanic sources, ocean biogeochemistry, and …


Itr/Im: Enabling The Creation And Use Of Geogrids For Next Generation Geospatial Information, Peggy Agouris, Mary-Kate Beard-Tisdale, Chaitanya Baru, Sarah Nusser Dec 2006

Itr/Im: Enabling The Creation And Use Of Geogrids For Next Generation Geospatial Information, Peggy Agouris, Mary-Kate Beard-Tisdale, Chaitanya Baru, Sarah Nusser

University of Maine Office of Research Administration: Grant Reports

The objective of this project is to advance science in information management, focusing in particular on geospatial information. It addresses the development of concepts, algorithms, and system architectures to enable users on a grid to query, analyze, and contribute to multivariate, quality-aware geospatial information. The approach consists of three complementary research areas: (1) establishing a statistical framework for assessing geospatial data quality; (2) developing uncertainty-based query processing capabilities; and (3) supporting the development of space- and accuracy-aware adaptive systems for geospatial datasets. The results of this project will support the extension of the concept of the computational grid to facilitate …


Workshop On U.S.-Hungarian Research Collaboration To Address It Challenges For 21st Century Society, Anthony Stefanidis Aug 2005

Workshop On U.S.-Hungarian Research Collaboration To Address It Challenges For 21st Century Society, Anthony Stefanidis

University of Maine Office of Research Administration: Grant Reports

This collaborative grant workshop lays a foundation for building joint US-Hungarian research projects. The proposed set of activities is an outgrowth of ongoing discussions between NSF program managers and Hungarian Research Scientists visiting NSF in the Fall of 2002. These discussions culminated in Hungarian researchers attending and participating in the annual meeting of digital government PI's and their government agency partners in May 2003 (dgo2003). Two US researchers who organized an International Digital Government Research Collaborations panel at dgo2003, in discussion with the Hungarian participants, accepted an invitation by the Hungarians to organize a small group of US researchers to …


Aquaculture-Based Calibration Of The M.Edulis Isotope Paleothermometer, Karl J. Kreutz, Harold Borns, Douglas Introne, Bruce Barber, Sven Funder Aug 2005

Aquaculture-Based Calibration Of The M.Edulis Isotope Paleothermometer, Karl J. Kreutz, Harold Borns, Douglas Introne, Bruce Barber, Sven Funder

University of Maine Office of Research Administration: Grant Reports

Oxygen isotopic analysis of marine carbonate shells (δ18Oc) is a standard paleoceanographic technique used to document the chronology of seawater temperature change. Shell δ18Oc depends not only upon seawater temperature, but also upon the isotopic composition of the seawater (δ18Ow; related to salinity) and any species-specific fractionation that occurs during biomineralization. In the past, the interpretation of shell δ18Oc has been based upon theoretical studies of chemical equilibrium and kinetics, or laboratory experiments involving the inorganic precipitation of CaCO3 from solution. Other methods have employed …


Glacial History Of The Amundsen Sea Shelf, Thomas B. Kellogg, Daniel Belknap, Davida Kellogg, Terence Hughes Jul 2005

Glacial History Of The Amundsen Sea Shelf, Thomas B. Kellogg, Daniel Belknap, Davida Kellogg, Terence Hughes

University of Maine Office of Research Administration: Grant Reports

This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports a marine geological investigation of the Amundsen Sea region toward a better understanding of the deglaciation history of the West Antarctic Ice Sheet (WAIS). The WAIS may be inherently unstable because it is the last marine-based ice sheet in the world. Unlike other embayments in West Antarctica, major ice streams draining into the Amundsen Sea from the interior of the WAIS lack buttressing ice shelves. Mass balance data for the distal portions of these ice streams (Pine Island and Thwaites glaciers) appear to …


Expansion And Renovation Of The Darling Marine Center Library, Kevin Eckelbarger Mar 2005

Expansion And Renovation Of The Darling Marine Center Library, Kevin Eckelbarger

University of Maine Office of Research Administration: Grant Reports

This award provides partial funding for expansion and modernization of the library at The Darling Marine Center. The library currently contains more marine-related holdings than any other library in Maine, and is an important resource for researchers and students interested in the biology of the Gulf of Maine and the Maine coast. Because of current space limitations, a third of the library's holdings are stored in other buildings and attic spaces. The library is not wheelchair accessible, has no significant study space, and provides only limited access to electronic databases. The proposed changes include: 1) construction of a 1,500 sq. …


Expansion And Renovation Of The Darling Marine Center Library, Kevin Eckelbarger Mar 2004

Expansion And Renovation Of The Darling Marine Center Library, Kevin Eckelbarger

University of Maine Office of Research Administration: Grant Reports

This award provides partial funding for expansion and modernization of the library at The Darling Marine Center. The library currently contains more marine-related holdings than any other library in Maine, and is an important resource for researchers and students interested in the biology of the Gulf of Maine and the Maine coast. Because of current space limitations, a third of the library's holdings are stored in other buildings and attic spaces. The library is not wheelchair accessible, has no significant study space, and provides only limited access to electronic databases. The proposed changes include: 1) construction of a 1,500 sq. …


Ams Radiocarbon Chronology Of Glacier Fluctuations In The South Shetland Islands During The Last Glacial/Interglacial Hemicycle:Implications For Global Climate Change, Brenda L. Hall Nov 2003

Ams Radiocarbon Chronology Of Glacier Fluctuations In The South Shetland Islands During The Last Glacial/Interglacial Hemicycle:Implications For Global Climate Change, Brenda L. Hall

University of Maine Office of Research Administration: Grant Reports

This award supports a two year program to produce a new reconstruction of ice extent, elevation and thickness at the Last Glacial Maximum (LGM) for the South Shetland Islands in the Antarctic Peninsula. One field season on Livingston Island will involve mapping the areal extent and geomorphology of glacial drift and determining the elevation and distribution of trimlines. In addition, ice flow direction will be determined by mapping and measuring the elevation of erosional features and the position of erratic boulders. One of the main goals of this work will be to demonstrate whether or not organic material suitable for …


Biodiversity And Ecosystem Informatics: Event And Process Tagging For Information Integration For The International Gulf Of Main Watershed, Mary-Kate Beard-Tisdale, Neal Pettigrew, Jeffrey Kahl, Malcolm L. Hunter Jr., Marilyn Lutz Jan 2003

Biodiversity And Ecosystem Informatics: Event And Process Tagging For Information Integration For The International Gulf Of Main Watershed, Mary-Kate Beard-Tisdale, Neal Pettigrew, Jeffrey Kahl, Malcolm L. Hunter Jr., Marilyn Lutz

University of Maine Office of Research Administration: Grant Reports

This incubation proposal addresses the issue of integrating large, diverse, and autonomous collections of scientific data within a complex institutional setting. The goal is to convert these autonomous collections into a shareable repository that supports synthesis of data through new metadata structures based on events and processes. The institutional setting is the data and data-gathering activities of over 80 agencies, NGOS, and academic and research institutions operating within the Gulf of Maine watershed. The metadata development will be coordinated by library and spatial information scientists working jointly with domain scientists. An essential task of this incubation effort will be the …