Digital Commons Network^™

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 …

Collaborative Research: Matching Levels Of Detail In Descriptions And Depictions Of Geographic Space, Michael Warboys

University of Maine Office of Research Administration: Grant Reports

This collaborative research project focuses on issues related to wayfinding, and is at the interface of geographic information science and human cognition. The research addresses the questions of the relationship between verbal and pictorial representations of geographic information, and how both representation modes can be successfully integrated in systems relating geographic information to users. To address this question, a theory of content and level of geographic detail is constructed that is independent of specific mode. The research is founded upon computational and cognitive theories of geographic information. The main idea is that theories of information granularity can be imposed on …

Understanding User Perceptions On Usefulness And Usability Of An Integrated Wiki-G-Portal, Yin-Leng Theng, Yuanyuan Li, Ee Peng Lim, Zhe Wang, Dion Hoe-Lian Goh, Chew-Hung Chang, Kalyani Chatterjea, Jun Zhang

Research Collection School Of Computing and Information Systems

This paper describes a pilot study on Wiki-G-Portal, a project integrating Wikipedia, an online encyclopedia, into G-Portal, a Web-based digital library, of geography resources. Initial findings from the pilot study seemed to suggest positive perceptions on usefulness and usability of Wiki-G-Portal, as well as subjects' attitude and intention to use.

Optimal Band Selection For Hyperspectral Remote Sensing Of Aquatic Benthic Features - A Wavelet Filter Window Approach, Charles R. Bostater

Ocean Engineering and Marine Sciences Faculty Publications

This paper describes a wavelet based approach to derivative spectroscopy. The approach is utilized to select, through optimization, optimal channels or bands to use as derivative based remote sensing algorithms. The approach is applied to airborne and modeled or synthetic reflectance signatures of environmental media and features or objects within such media, such as benthic submerged vegetation canopies. The technique can also applied to selected pixels identified within a hyperspectral image cube obtained from an board an airborne, ground based, or subsurface mobile imaging system. This wavelet based image processing technique is an extremely fast numerical method to conduct higher …

A Pixel To Pixel Hyperspectral Synthetic Image Model Inter-Comparison Study, Charles R. Bostater, Luce Bassetti

Ocean Engineering and Marine Sciences Faculty Publications

The purpose of this paper is to present simulation results comparing e a Monte Carlo Hyperspectral Simulation Model (MCHSIM) which generates synthetic images with realistic water wave surface to an iterative layered radiative transfer model used to generate hyperspectral synthetic images with realistic water wave surfaces. The Monte Carlo model is divided into 5 steps: (1) generation of the photons, (2) tracking of the photon optical path and simultaneously (3) recording of the photon's location within the water column, (4) a tabulation of the photon location or positions, and conversion to meaningful radiometric quantities and (5) a calculation and processing …

Sensor Motion Control & Mobile Platforms For Aquatic Remote Sensing, Charles R. Bostater

Ocean Engineering and Marine Sciences Faculty Publications

Modern remote sensing systems used in repetitive environmental monitoring and surveillance applications are used on various platforms. These platforms can be categorized as stationary (fixed) or moving platforms. The sensing systems monitor the ambient environment which also may have inherent motion, such as the water surface with water waves. This is particularly the case for airborne or ship borne sensing of aquatic environments and is true for ground based walking or crawling systems. The time sequential comparison and spatial registration of sensor images, particularly "hyperspectral imagery" requires pixel to pixel registration for science based change and target (or medium) detection …

Environmental Equity Is Child's Play: Mapping Public Provision Of Recreation Opportunities In Urban Neighbourhoods, Jason Gilliland, Martin Holmes, Jennifer D. Irwin, Patricia Tucker

Geography & Environment Publications

This paper examines the spatial distribution of recreational opportunities for children and youth in a mid-sized Canadian city (London, Ontario), in relation to the socioeconomic status of neighbourhoods and estimated local need for publicly provided recreation spaces. Public recreation facilities (N = 537) throughout the city were identified, mapped and analysed in a geographic information system. To explore potential socio-environmental inequities, neighbourhoods (N = 22) were characterized by socioeconomic and environmental variables, an index of neighbourhood social distress, a neighbourhood play space needs index, and measures of the prevalence and density of recreational opportunities. The results of the …

Evaluating The Long-Term Metacommunity Dynamics Of Tree Hole Mosquitoes, Alicia M. Ellis, L. Philip Lounibos, Marcel Holyoak

Dartmouth Scholarship

Four different conceptual models of metacommunities have been proposed, termed “patch dynamics,” “species sorting,” “mass effect,” and “neutral.” These models simplify thinking about metacommunities and improve our understanding of the role of spatial dynamics both in structuring communities and in determining local and regional diversity. We tested whether mosquito communities inhabiting water-filled tree holes in southeastern Florida, USA, displayed any of the characteristics and dynamics predicted by the four models. The densities of the five most common species in 3–8 tree holes were monitored every two weeks during 1978–2003. We tested relationships between habitat variables and species densities, spatial synchrony, …

The Volatile Middle East, Frank L. Jenista

History and Government Faculty Publications

No abstract provided.

The Development Of Social And Cultural Geographies In Taiwan: Knowledge Production And Social Relevance, Hsin-Ling Wu, Sue-Ching Jou, Lily Kong

Research Collection School of Social Sciences

Social and cultural geographies have long occupied a marginal position in Taiwan's scholarship in the humanities and social sciences. Despite the influence of the so-called ‘cultural turn’ that has characterized much of Anglo-American scholarship since the 1990s (Barnett 1998), Taiwan's scholarship in the social sciences in general and human geography more specifically has remained relatively untouched by these intellectual currents till very recent years. This paper seeks to examine the social, intellectual and institutional contexts that explain this marginalization, and consider the possibilities for social and cultural geographies' emergence from marginality in Taiwan in the future. This possibility is considered …

Implementation Of A Ground Truth Process For Development Of A Submerged Aquatic Vegetation (Sav) Mapping Protocol Using Hyperspectral Imagery, Carlton R. Hall, Charles R. Bostater, Robert W. Virnstein

Ocean Engineering and Marine Sciences Faculty Publications

Protocol development for science based mapping of submerged aquatic vegetation (SAV) requires comprehensive ground truth data describing the full range of variability observed in the target. The Indian River Lagoon, Florida, extends along 250 km of the east central Florida coast adjacent to the Atlantic Ocean. The lagoon crosses the transition zone between the Caribbean and Carolinian zoogeographic provinces making it highly diverse. For large scale mapping and management of SAV four common and three uncommon species of seagrass (Tracheophyta) and three broad groups of macroalgae; red algae (Rhodophyta), green algae (Chlorophyta), and brown algae (Phaeophyta) are recognized. Based on …

Research On Synthetic Rope And Its Future In Timber Harvesting, Joel N. Hartter, Jared Leonard, John Garland, Steve Pilkerton

Geography

Steel wire rope is used for many logging applications. It has served the industry well in terms of strength, durability, and longevity. However, steel wire rope is difficult to use because it is stiff, heavy, and unyielding. These characteristics can lead to fatigue and exhaustion, and may contribute to worker injuries. Ultra-high molecular weight polyethylene synthetic rope has the potential to replace steel wire rope for selected logging applications. Research shows ergonomic gains and other operational effectiveness with its use. This paper presents research results, potentials, and issues in improving economic and ergonomic performance of ground-based and cable logging. Potential …

Sustainability With Globalization: An Unsustainable Proposition, Daniel B. Reader

Masters Theses & Specialist Projects

Globalization is recognized as a world-encompassing phenomenon, even as its benefits are debated. Sustainability, the capacity to maintain high standards of living through generations, is at stake. This paper examines the problems of sustainability with globalization from several perspectives. High statistical correlation between indices of globalization and environmental degradation (r2 = 0.977, p < .001) is found using multi-dimensional scaling software. The socially destabilizing, culture flattening effects of globalization are examined, and the terms ‘nationalism’ and ‘terrorism’ are defined. On the basis of its medial position among the indices of both globalization and environmental degradation, Chile is explored in a case study of the interaction. Conclusions regarding Chile’s vulnerabilities are reached, and the country’s environmental, social, and economic ‘weak spots’ are identified. The ethical positions of globalization and sustainability are considered, and the conclusion that there is very little that can be done to alter the nature of the interaction is drawn. It is suggested that globalization minimizes the prospects of success in efforts toward sustainability by maximizing vulnerabilities among sustainability’s components.

Los Terrores De La Hipervigilancia: Seguridad Y Nuevas Espacialidades De La Niñez, Cindi Katz

Publications and Research

A partir de estudios anteriores que vincularon las geografías de los niños y las niñas con un análisis de los efectos de la reestructuración de la economía global en la reproducción social, este artículo examina las nuevas espacialidades de la niñez en Estados Unidos. Sostengo que los espacios contemporáneos de la infancia, en todas las escalas, desde las del cuerpo hasta las globales, han transigido frente a la seguridad y al avance de la privatización. Recurro al lenguaje del «terror» para indagar estos efectos y sus consecuencias en la vida cotidiana de los niños y las niñas en un entorno …

An Interim Report Of The Viking Age Archaeofauna From Hrísheimar, Mývatn District, N Iceland, Thomas H. Mcgovern, Sophia Perdikaris, Ramona Harrison, Konrad Smiarowski, Norie Manigault

School of Global Integrative Studies: Faculty Publications

The excavations at Hrísheimar in Mývatnssveit in N Iceland are producing a very large archaeofauna, which can now be dated through both radiocarbon and two major volcanic tephra layers (the Landnám tephra of ca AD 871 and the Veiðivötn 930 tephra). While much of the site has been destroyed by wind erosion, substantial midden deposits (which overly earlier structures in some cases) still remain along the NE edge of the site area. While excavation is ongoing and only a small portion of the very substantial archaeofauna has been analyzed so far, it may be useful to present an interim working …

Repopulation As Revitalization? Condominiums In St.Paul And Minneapolis, Minnesota, Fay L. Cleaveland

Geography Honors Projects

Condominium development in downtown business districts has boomed in the last ten years, increasing the size and density of urban neighborhood populations. The design of condos and their immediate surroundings can affect how residents will use these spaces and the quality of life experienced by neighborhood inhabitants. This research applies the design principles of Jane Jacobs and the Congress for the New Urbanism to four condominium developments in St. Paul and Minneapolis, Minnesota, to determine their impact on neighborhood livability in downtowns. I conclude with an analysis of their effectiveness as downtown revitalization tools and policy suggestions for future condominium …

Intersecting Global And Local: Spatial Analysis Of Ethnicities Of Asian Businesses In The Minneapolis-Saint Paul Metro Area, Grace Emiko Guthe

Geography Honors Projects

The changing nature of immigration to the United States and changes in the morphology of American cities challenge traditional theories of ethnic entrepreneurship as a means of success in assimilating into American society. This study, based on data of over 800 businesses in the Minneapolis-Saint Paul area, finds that specific Asian ethnic groups demonstrate distinctive patterns, which often do not conform to traditional theories of ethnic entrepreneurship. Instead, other concepts, such as heterolocalism and transnationalism, add to the discussion concerning a new role for modern ethnic entrepreneurs. This new role must examine ethnic businesses as localities of transnationalism in a …

Food Security In Urban America: A Model Based On Minneapolis-St. Paul, Minnesota, Joel Larson

Geography Honors Projects

Food security, through access and availability, has become a pressing issue in many fields of academia. Until the mid-1990s, research within the United States has been hampered by ill-defined concepts and a subsequent inability for social scientists to contribute to policy on the issues. My research attempts to contribute to the limited body of developed-world food security research by applying a Geographic Information Systems model to Minneapolis and St. Paul, predicting high risk of food insecurity in urban areas. Taking into account factors such as income, ethnicity, and family status, this model finds that it is not the central city …

Trazando Fronteras, Persiguiendo Sueños: La Realidad De La Migración Del Campo En Nicaragua Hacia Costa Rica, Becca Telzak

Independent Study Project (ISP) Collection

“Este viaje en búsqueda de una mejor vida es lo que llamaremos migración y a sus pasajeros trabajadores migrantes.”

Durante este proyecto, yo escuché muchas veces las palabras Trabajadores Migrantes. Pero quien es un trabajador migrante? Según la organización ATC (asociación de Trabajadores del Campo del Nicaragua), “toda persona que se traslade de un país a otro para buscar empleo, trabaja o que haya realizado una actividad laboral remunerada.” Hay muchos tipos de trabadores que son migrantes: temporal, Semi permanente o permanente. Los trabajadores temporales son por un año o menos y trabajan durante las cosechas para exportación y dependen …

Accuracy Assessment Of Land Cover Maps Derived From Multiple Data Sources, Daniel Unger, Hillary Tribby, Hans Michael Williams, I-Kuai Hung

Faculty Publications

Maximum Likelihood (ML) and Artificial Neural Network (ANN) supervised classification methods were used to demarcate land cover types within IKONOS and Landsat ETM+ imagery. Three additional data sources were integrated into the classification process: Canopy Height Model (CHM), Digital Terrain Model (DTM) and Thermal data. Both the CHM and DTM were derived from multiple return small footprint LIDAR. Forty maps were created and assessed for overall map accuracy, user's accuracy, producer's accuracy, kappa statistic and Z statistic using classification schemes from U.S.G.S. 1976 levels 1 and 2 and T.G.l.C. 1999 levels 2 and 4. Results for overall accuracy of land …

Indigenous Research: Whose Priority? Journeys And Possibilities Of Cross-Cultural Research In Geography, Paul Hodge, John Lester

Aboriginal Policy Research Consortium International (APRCi)

Decolonising research in geography is part of a broader ‘reflexive’ process which continues to question the positivist status of ‘researcher as observer’. This paper contributes to this reflexive turn, drawing on the particular experiences of a cross- cultural Honours thesis. The paper is pursued through a parallel journey involving a non-Indigenous researcher (and author of the cross-cultural Honours thesis) engaging Indigenous research1 with interpretative insight from an Indigenous adviser or ‘on-looker’. The methodological difficulties revealed by the parallel journey are emphasised to highlight both the complexities and reflexive possi- bilities of cross-cultural research but also to consider potential institutional and …

Music And Moral Geographies: Constructions Of "Nation" And Identity In Singapore, Lily Kong

Research Collection School of Social Sciences

In this paper, I attempt to pull together sociological and geographical perspectives in the study of music to understand the ways in which pop and rock music are socio-cultural products with political and moral meanings and implications. I examine state engineering of moral panics, focusing on a case study of pop and rock music in post-independence Singapore. Such engineering is aimed at political and ideological ends, in particular, "nation"- building outcomes. In engineering moral panics through both discursive and legislative acts, the contours of a moral geography are delineated at various spatial scales. First, at the scale of the national …

Wild Capitalism: Environmental Activism And Postsocialist Political Ecology In Hungary, Krista Harper

Anthropology Department Faculty Publication Series

"Wild Capitalism" examines environmental issues in the "New Europe" of the twenty-first century. Specifically, it looks at how the meanings of "civil society" and "environment" have changed as environmentalists encounter the political and ecological realities of life after state socialism. Although environmentalism is a global social movement, environmental politics is a grassroots process in which activists creatively translate environmental issues into cultural idioms and political processes.

Religiosity, Secularism, And Social Health: A Research Note, Thomas S. Mach, Gerson Moreno-Riano, Mark Caleb Smith

History and Government Faculty Publications

This article is a research note addressing various theoretical and methodological issues in the measurement and analysis of religiosity and secularism and their relationship to quantifiable measures of social health in advanced and prosperous democracies. Particular attention is given to cross-national frameworks for studying religiosity and secularism as well as to the conceptualization and statistical analysis of these notions for research design. Various procedural suggestions regarding the use of comparative frameworks are presented to assist in the development and implementation of future studies gauging the impact of worldview commitments upon societal wellbeing.

Service-Learning In Watershed-Based Initiatives: Keys To Education For Sustainability In Geography?, James Eflin, Amy L. Sheaffer

Service Learning, General

A call for combining the strengths of geographic education with environmental education to produce an 'education for sustainability' addresses local problems for sustainable development. A place-based approach encourages civic responsibility among students. Using service-learning to extend education beyond the classroom in this case study connected students with local clients in a watershed-based initiative. Theoretical underpinnings of service-learning for geographic education are discussed, and the case study is viewed from instructor, student, and client perspectives to identify successful outcomes and provide suggestions for those who might adopt service-learning for the first time.

Winds Of Change?: Projections Of Near-Surface Winds Under Climate Change Scenarios, S C. Pryor, Justin T. Schoof, R J. Barthelmie

Publications

Changes in near–surface wind speeds due to global climate change may have profound geophysical and societal impacts. However, Global Climate Models (GCMs) are unable to replicate the historically observed magnitude and spatial variability of wind speeds, so we apply a downscaling technique to generate probability distributions of wind speeds at sites in northern Europe for historical periods (1961–1990 and 1982–2000) and two future periods (2046–2065, 2081–2100). Projections for the twenty-first century (C21st) indicate no evidence of substantial evolution relative to the end of the twentieth century (C20th), although there is increased divergence of results from downscaling of different GCMs toward …

No. 1: Migration And Development In Africa: An Overview, Richard Black, Jonathan Crush, Sally Pederby, Savina Ammassari, Lyndsay Mclean Hilker, Shannon Mouillesseaux, Claire Pooley, Radha Rajkotia

Southern African Migration Programme

Migration is clearly a major issue across Africa. Indeed, migration – both within countries and across borders – can be seen as an integral part of labour markets and livelihoods across much of the continent for at least the last century. Over time, and in different places, migration has taken a number of different forms. It has cut across class and skill boundaries, and exists in widely different geographical and demographic contexts. Migration represents an important livelihood strategy for poor households seeking to diversify their sources of income, but is also characteristic of the better off, and indeed of many …

The Study Of Urban Form In Canada, Jason Gilliland, Pierre Gauthier

Geography & Environment Publications

This paper examines contributions to the study of urban form in Canada by French and English researchers working in a variety of disciplines, especially architecture, planning, geography, and history. Instead of discussing contributions purely along traditional linguistic or disciplinary lines, the authors use a novel classification scheme to identify and categorize significant works according to their particular epistemological perspective, before describing noteworthy contributions of various academic disciplines by key authors and research themes. The most significant contributions to the study of urban form in Canada have come from two largely isolated camps: first, architects/planners, mostly from Québec, who examine form …

Monitoring Surface Displacement Of The Colby Green Retaining Pond Dams, John Goss

Undergraduate Research Symposium (UGRS)

The Colby Green is a campus expansion project which began in October of 2003. The construction would result in three new buildings, additional parking, and an elliptical 75,000-squarefoot green southeast of Mayflower Hill Drive. There were also plans for the construction of three run-off management and sediment ponds below the green, to manage flooding of the green. Three drains in the green transport water to the three retaining ponds which slowly disperse water into the surrounding environment. The ponds were created by constructing earthen dams around the drain outlets. The dams are composed of soil, cobbles, and boulders procured from …

User Interface Design For Semantic Query Expansion In Geodata Repositories, Hartwig H. Hochmair, Zhaohui (Jennifer) Fu

GIS Center

Semantic query expansion is the process of supplementing a user query with additional terms that interpret and extend the user's information needs. This work presents the results of an empirical study that investigates user preferences for different designs of user interfaces that provide semantic query expansion for data search from geo-data repositories. The study assesses further whether it is possible to map qualitative gradations of semantic relatedness between geographic key terms to ranges of numerical similarity values.