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Articles 22771 - 22800 of 25853
Full-Text Articles in Entire DC Network
If We Only Knew What We Know: Open Regulatory Review At The Fda (Policy Essay), Beth Simone Noveck
If We Only Knew What We Know: Open Regulatory Review At The Fda (Policy Essay), Beth Simone Noveck
Articles & Chapters
No abstract provided.
Depot Pond, Cooperative Extension
Townhouse Pond, Cooperative Extension
Green Siting For Green Energy, Amy Wilson Morris, Jessica Owley, Emily Capello
Green Siting For Green Energy, Amy Wilson Morris, Jessica Owley, Emily Capello
Journal Articles
No abstract provided.
Conservation Without Nature: The Trouble With In Situ Versus Ex Situ Conservation, Irus Braverman
Conservation Without Nature: The Trouble With In Situ Versus Ex Situ Conservation, Irus Braverman
Journal Articles
Although understudied in academia and mostly unheard of by the general public, the in situ/ex situ dichotomy has shaped — and still very much shapes — the development of the nature conservation movement and its institutional alliances in the last few decades. Latin for “in” and “out” of place, the in/ex situ dichotomy often stands for the seemingly less scientific dichotomy between wild nature and captivity. Drawing on ethnographic engagements with zoo professionals and wildlife managers, this article explores the evolution of the in situ/ex situ dyad in nature conservation, which traverses the worlds of dead and live matter, artificilia …
Wetland Issues Affecting Waterfowl Conservation In North America, Heath M. Hagy, Scott C. Yaich, John W. Simpson, Eduardo Carrera, David A. Haukos, W.Carter Johnson, Charles R. Loesch, Fritz A. Reid, Scott E. Stephens, Ralph W. Tiner, Brett A. Werner, Greg S. Yarris
Wetland Issues Affecting Waterfowl Conservation In North America, Heath M. Hagy, Scott C. Yaich, John W. Simpson, Eduardo Carrera, David A. Haukos, W.Carter Johnson, Charles R. Loesch, Fritz A. Reid, Scott E. Stephens, Ralph W. Tiner, Brett A. Werner, Greg S. Yarris
Natural Resource Management Faculty Publications
This paper summarises discussions by invited speakers during a special session at the 6th North American Duck Symposium on wetland issues that affect waterfowl, highlighting current ecosystem challenges and opportunities for the conservation of waterfowl in North America. Climate change, invasive species, U.S. agricultural policy (which can encourage wetland drainage and the expansion of row-crop agriculture into grasslands), cost and competition for water rights, and wetland management for non-waterfowl species were all considered to pose significant threats to waterfowl populations in the near future. Waterfowl populations were found to be faced with significant threats in several regions, including: the Central …
Environmental Variables Measured At Multiple Spatial Scales Exert Uneven Influence On Fish Assemblages Of Floodplain Lakes, Daniel J. Dembkowski, L.E. Miranda
Environmental Variables Measured At Multiple Spatial Scales Exert Uneven Influence On Fish Assemblages Of Floodplain Lakes, Daniel J. Dembkowski, L.E. Miranda
Natural Resource Management Faculty Publications
We examined the interaction between environmental variables measured at three different scales (i.e., landscape, lake, and in-lake) and fish assemblage descriptors across a range of over 50 floodplain lakes in the Mississippi Alluvial Valley of Mississippi and Arkansas. Our goal was to identify important local- and landscape-level determinants of fish assemblage structure. Relationships between fish assemblage structure and variables measured at broader scales (i.e., landscape-level and lake-level) were hypothesized to be stronger than relationships with variables measured at finer scales (i.e., in-lake variables). Results suggest that fish assemblage structure in floodplain lakes was influenced by variables operating on three different …
Gape:Body Size Relationship For Smallmouth Bass, Craig L. Schake, Daniel J. Dembkowski, Melissa R. Wuellner
Gape:Body Size Relationship For Smallmouth Bass, Craig L. Schake, Daniel J. Dembkowski, Melissa R. Wuellner
Natural Resource Management Faculty Publications
The types and sizes of prey fishes consumed by predatory fish often are limited by gape dimensions of the predator (Slaughter and Jacobson 2008). In general, the size of prey consumed is positively related to predator size when prey are available across a wide range of sizes (Werner and Hall 1974). Opportunistic predators with large gape dimensions, such as smallmouth bass (Micropterus dolomieu), may consume a wide range of prey types and sizes, thereby exerting top-down influences on prey population dynamics and potentially restructuring aquatic communities (e.g., Werner and Hall 1974, Jackson 2002). Although feeding ecology of smallmouth bass varies …
Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy Grovenburg, William F. Jensen
Bed-Site Selection By Neonatal White-Tailed Deer In Central North Dakota, Brian A. Schaffer, Jonathan A. Jenks, Troy Grovenburg, William F. Jensen
Natural Resource Management Faculty Publications
Understanding bed-site selection and vegetation characteristics provides valuable information for population management (Verme 1977, Huegel et al. 1985a, Nelson and Woolf 1987). Predation and other natural-caused mortalities of white-tailed deer (Odocoileus virginianus) neonates are most likely to occur within the first 60 days of life; a time period when selected habitat characteristics are vital to survival (Verme 1977, Huegel et al. 1985a, Nelson and Woolf 1987, Grovenburg et al. 2010). Prior to the study of Grovenburg et al. (2010), limited research had been completed on bed-site selection of neonatal white-tailed deer in the grasslands of the Northern Great Plains. In …
Synthesis And Biological Evaluation Of A Library Of Polyacetylene Compounds Based On An Antiprotozoal Natural Product From Cussonia Zimmermannii, John Hoody
Graduate Student Theses, Dissertations, & Professional Papers
Leishmaniasis is one of several tropical diseases classified as a ôneglected tropical diseaseö. Its global prevalence is 12 million people with an estimated at-risk population of 350 million people.1 Current treatments include antimonials, amphotericin B, pentamidine, and miltefosine. Access to these medications is often limited in the impoverished nations that Leishmaniasis predominantly affects. Drug resistance and toxicity are also significant drawbacks to the current treatments.3 Therefore, there is an immediate need for the research and development of novel therapeutic molecules and strategies to combat Leishmaniasis.
Testing Of High Speed Ground Reaction Force Treadmill For Kinetic Analysis For Running In Static And Dynamic Loading Conditions, Michael Ora Powell
Testing Of High Speed Ground Reaction Force Treadmill For Kinetic Analysis For Running In Static And Dynamic Loading Conditions, Michael Ora Powell
Graduate Student Theses, Dissertations, & Professional Papers
This thesis proposal describes the design, fabrication, and testing of a high-speed force treadmill capable of measuring the vertical and horizontal ground reaction forces imparted to the bed during the stance phase of human running. Natural frequency, crosstalk, linearity, use of aluminum line shaft with flexible couplings, center of pressures, and comparison to over-ground running were investigated. The natural frequency of the treadmill bed was 113 Hz achieved in part through the use of the line shaft to remove the mass of the motor (36.8 kg) with negligible dissipation of imparted force to the treadmill. The linearity test results showed …
Poisons In The Basement: An Analysis Of X-Ray Fluorescence Tests For Heavy Metal Pesticides In The University Of Montana’S Ethnographic Collection, Alexis Berger
Graduate Student Theses, Dissertations, & Professional Papers
This thesis focuses on the X-Ray Fluorescence (XRF) testing that was performed on the University of Montana’s (UM) ethnographic collection. This collection is housed in a repository in the UM Anthropological Curation Facility (UMACF). The main concern over the artifacts and the reason behind the decision to perform such testing was to determine if any hazardous pesticides were used as part of past conservation treatments on the collection over the course of its history at the University of Montana. The XRF tests were performed during the winter of 2011-2012 on over 350 artifacts. The results had been previously unanalyzed. The …
Correlates Of Canada Lynx Reproductive Success In Northwestern Montana, Megan K. Kosterman
Correlates Of Canada Lynx Reproductive Success In Northwestern Montana, Megan K. Kosterman
Graduate Student Theses, Dissertations, & Professional Papers
Habitat loss and fragmentation continue to threaten the persistence of forest carnivores in the contiguous US. The recovery of federally threatened species, such as the Canada lynx (Lynx canadensis), will be greatly enhanced by identifying a demographic-based definition of lynx habitat based on habitat analyses of animals with differential reproductive success. We collected field data on denning and offspring survival in northwestern Montana from 1998–2012. We used these data to define four response variables as measures of female Canada lynx reproductive success: (1) potential reproductive events, (2) initial litter size, (3) litter success (≥1 survivor), and (4) surviving …
The Effects Of Seed Source Health On Whitebark Pine Regeneration Density After Wildfire, Signe B. Leirfallom
The Effects Of Seed Source Health On Whitebark Pine Regeneration Density After Wildfire, Signe B. Leirfallom
Graduate Student Theses, Dissertations, & Professional Papers
Whitebark pine (Pinus albicaulis) is declining nearly range-wide largely from mountain pine beetle (Dendroctonus ponderosae) outbreaks and the exotic pathogen Cronartium ribicola, which causes the disease white pine blister rust. With high mortality in cone-bearing whitebark pine, seed production may not be sufficient to support natural regeneration after disturbance such as wildfire. The objective of this study was to examine the relationship between whitebark pine seed source health and whitebark pine regeneration density in adjacent, stand-replacing burns. I sampled regeneration patterns and seed source health and status in 15 burns within six national forests and …
Quantifying The Influence Of Past Wildfires On The Severity And Size Of Subsequent Wildfires, Sean Aaron Parks
Quantifying The Influence Of Past Wildfires On The Severity And Size Of Subsequent Wildfires, Sean Aaron Parks
Graduate Student Theses, Dissertations, & Professional Papers
Wildfire is arguably one of the most important and widespread natural disturbance agents in western U.S. forests. It has a substantial impact on ecosystem structure and function by influencing soils, nutrients, carbon budgets, wildlife habitat, and vegetation. Wildfires also influence fuel amount, type, and structure, potentially influencing the severity and size of subsequent wildfires through site- and landscape-level feedback mechanisms. Until relatively recently, the ability to quantitatively evaluate how these feedback mechanisms operate has not been feasible because of data limitations (i.e. there has not been enough wildfire). However, due to increased fire activity over the last ~25 years, there …
Securing Food And Livelihoods: Opportunities And Constraints To Sustainably Enhancing Household Food Production In Santa Familia Village, Belize, Siobhan B. Lozada
Securing Food And Livelihoods: Opportunities And Constraints To Sustainably Enhancing Household Food Production In Santa Familia Village, Belize, Siobhan B. Lozada
Graduate Student Theses, Dissertations, & Professional Papers
Rural households play an active role in reorganizing their livelihood strategies to respond to external stresses and shocks. What is unclear is the extent to which rural households can remain resilient in the face of continued external stresses and how policy actions at larger scales can more effectively encourage rural food and livelihood sustainability. Economic and ecological stresses and shocks have negatively impacted livelihood security and wider economic stability in Belize. This has increased the number of people below the poverty line to 41.3 percent, who remain disproportionately located in rural areas. With a high degree of import dependency, global …
Neuroplasticity, Dosage, And Repetition Priming Effects In Individuals With Stroke-Induced Aphasia, Jenna Ray Griffin
Neuroplasticity, Dosage, And Repetition Priming Effects In Individuals With Stroke-Induced Aphasia, Jenna Ray Griffin
Graduate Student Theses, Dissertations, & Professional Papers
Intensity significantly impacts aphasia treatment efficacy, yet research protocols have not answered questions about optimal intensity and/or dosage. A single-subject ABA design investigated the influence of repetition priming on naming performance for four individuals with stroke-induced aphasia. The participants completed an intensive training protocol with repeated attempts to name pictures. Independent variables included training status and stimulus dosage. The dependent variable was response accuracy. Response accuracy increased for all participants during the training phase, and training effects persisted through the maintenance phase for all participants. Stimulus dosage did not consistently influence response accuracy for the participants.
An Assessment Of The Health Needs Of The Transgender Community In Montana, Anna Grace Von Gohren
An Assessment Of The Health Needs Of The Transgender Community In Montana, Anna Grace Von Gohren
Graduate Student Theses, Dissertations, & Professional Papers
The transgender community has been identified as a group at high risk for HIV transmission and increased possibility for poor quality of life. This paper represents the results of a qualitative research study using interviews and Photovoice as methodologies to explore the contextual factors that define and shape the lives of people in Montana who identify as transgender, and specifically to explore factors that influence their risk of infection with HIV/AIDS. Ten major themes emerged from the interviews as well as the discussions surrounding the photographs. Sense of self was identified as a core category related to the overall health …
Just Leftovers, Sarah Elizabeth Tancred
Just Leftovers, Sarah Elizabeth Tancred
Graduate Student Theses, Dissertations, & Professional Papers
Just Leftovers is intended to offer an understanding of the woman’s role within the domestic realm and its evolution over time in American society. My ultimate goal is to create an awareness of women’s inequality historically, but also to expose the inequality, biases, and double standards that continue to exist in our contemporary society. I choose to create this awareness through visual art with the manipulation of recognizable objects that the general public, stereotypically speaking, would associate with femininity and domesticity. I am fascinated by how these “feminine” objects and their historical content [e.g. bread pan] have been socially constructed …
Use And Effectiveness Of Wildlife Crossing Structures With Short Sections Of Wildlife Fencing, Elizabeth Rose Fairbank
Use And Effectiveness Of Wildlife Crossing Structures With Short Sections Of Wildlife Fencing, Elizabeth Rose Fairbank
Graduate Student Theses, Dissertations, & Professional Papers
Our growing transportation infrastructure in the United States has many direct and indirect impacts to wildlife populations. Humans are also impacted by the interaction of roads and wildlife in terms of wildlife-vehicle collisions (WVC’s); which annually result in: hundreds of human fatalities, tens of thousands of human injuries, and billions of dollars in property damage. In response to concerns for wildlife and human safety, road mitigation measures are becoming an increasingly important tool for transportation agencies to minimize the risks of WVC’s. The construction of multiple wildlife crossing structures in combination with wildlife fencing have been shown to reduce WVC’s …
Creative Engagements Indeed! Open "Disciplines," The Allure Of Others, And Intellectual Fertility, David A. Westbrook
Creative Engagements Indeed! Open "Disciplines," The Allure Of Others, And Intellectual Fertility, David A. Westbrook
Journal Articles
No abstract provided.
The Evil Waiter Case, Luis E. Chiesa
The Woman Question In Post-Socialist Legal Education, Isabel Marcus
The Woman Question In Post-Socialist Legal Education, Isabel Marcus
Journal Articles
Sex equality—a significant contribution to the international human rights canon—was one of the legitimating principles of socialist states in Eastern Europe and, at least formally, of their post-socialist democratic successors. Why then has the subject been ignored or deeply marginalized in post-socialist legal education? Using socio-legal analysis to establish a legitimation or delegitimation dynamic regarding law in theory and practice in both eras, the author provides answers to this question and suggests various options for reforming post-socialist legal education to provide adequate training in the subject of women’s rights consistent with states’ international and regional human rights obligations.
Adaptive Resonance Theory And Diffusion Maps For Clustering Applications In Pattern Analysis, Donald C. Wunsch, David J. Morris, Rui Xu
Adaptive Resonance Theory And Diffusion Maps For Clustering Applications In Pattern Analysis, Donald C. Wunsch, David J. Morris, Rui Xu
Electrical and Computer Engineering Faculty Research & Creative Works
Adaptive Resonance is primarily a theory that learning is regulated by resonance phenomena in neural circuits. Diffusion maps are a class of kernel methods on edge-weighted graphs. While either of these approaches have demonstrated success in image analysis, their combination is particularly effective. These techniques are reviewed and some example applications are given.
An Investigation Of Complex Systems In 16 Dimensions, Jordon M. Huffman
An Investigation Of Complex Systems In 16 Dimensions, Jordon M. Huffman
Theses and Dissertations
Sir Isaac Newton studied the world around him. He observed unexplainable phenomena that the math of his time could not prove. With the help of Gottfried Leibniz, he created infinitesimal calculus to prove his theories. The new concepts he created revolutionized science, and opened new realms of science previously unthought of. In 2002, Dr. Stephen Wolfram published A New Kind of Science, He argues that the processes of understanding cellular automata can be applied to other aspects of science. Dr. Rodrigo Obando of Columbus State University took Dr. Wolfram's work and dissected it. By breaking down the rules, he started …
Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower, Jess H. Gilmer Ii
Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower, Jess H. Gilmer Ii
Theses and Dissertations
Anthropogenic alteration of Earth's ecosystems has pushed global biodiversity into a state of crisis. Freshwater species have been particularly vulnerable, with crayfish ranking as the second most imperiled taxonomic group in North America. Primary burrowers represent only 15% of crayfish species in North America; however, they constitute 32% of imperiled crayfish. Despite their conservation importance, little is known about the ecology of burrowing crayfish. To advance our knowledge about the habitat characteristics of burrowing crayfish, groundwater hydrology, water chemistry, and soil properties were assessed to determine their importance for the state-listed endangered, primary burrower Cambarns harti. Groundwater hydrology and …
More Than Just A Number: Student And Educator Perceptions About The Transition To Ninth Grade, Jody K. Sloat
More Than Just A Number: Student And Educator Perceptions About The Transition To Ninth Grade, Jody K. Sloat
Theses and Dissertations
The transition to ninth grade can be a difficult time for adolescents. New students confront the unknown on the first day, and their anxieties combine with new surroundings, teachers, and older students, to make for a stressful experience (Benner & Graham, 2009). Some students enter high school more prepared to meet academic and social challenges, while others have not matured enough to realize success (Graber & Brooks-Gunn, 1996; Steinberg, 2011). This lacking in maturity leads to high numbers of behavior problems and failures in ninth grade (Alspaugh, 1998; Frey, Ruchkin, Martin & Schwab-Stone, 2009). According to stage-environment fit theory, these …
Expensive Errors Or Rational Choices: The Pioneer Fringe In Late Viking Age Iceland, Orri Vesteinsson, Mike Church, Andrew Dugmore, Thomas Mcgovern, Anthony Newton
Expensive Errors Or Rational Choices: The Pioneer Fringe In Late Viking Age Iceland, Orri Vesteinsson, Mike Church, Andrew Dugmore, Thomas Mcgovern, Anthony Newton
Publications and Research
Just as the colonies established on the North Atlantic islands in the Viking Age were peripheral to Europe, so these islands had their own peripheral areas. In Iceland the highland margins have long been a focus of archaeological research and the prevailing view has been that highland settlement failed because people had made unrealistic assessments of carrying capacity. This paper presents a case study of the northern highland valley of Krókdalur and argues that the dating and pattern of settlement in that valley indicates that its settlers were keenly aware of its limitations. It also suggests explanatory frameworks that can …
Nest Destruction Elicits Indiscriminate Con- Versus Heterospecific Brood Parasitism In A Captive Bird, Rachel C. Shaw, William E. Feeney, Mark E. Hauber
Nest Destruction Elicits Indiscriminate Con- Versus Heterospecific Brood Parasitism In A Captive Bird, Rachel C. Shaw, William E. Feeney, Mark E. Hauber
Publications and Research
Following nest destruction, the laying of physiologically committed eggs (eggs that are ovulated, yolked, and making their way through the oviduct) in the nests of other birds is considered a viable pathway for the evolution of obligate interspecific brood parasitism. While intraspecific brood parasitism in response to nest predation has been experimentally demonstrated, this pathway has yet to be evaluated in an interspecific context. We studied patterns of egg laying following experimental nest destruction in captive zebra finches, Taeniopygia guttata, a frequent intraspecific brood parasite. We found that zebra finches laid physiologically committed eggs indiscriminately between nests containing conspecific eggs …
Microbial Community Composition Of Marine Biofilms In A Northern Temperate, Lauren Killea
Microbial Community Composition Of Marine Biofilms In A Northern Temperate, Lauren Killea
Open Access Master's Theses
Marine biofilms are microbial aggregates that ubiquitously develop on substrates in seawater. Biofilms are not simple layers of microorganisms adhering to a surface followed by new organisms growing on top, but they instead have a complex developmental process making biofilms dynamic, diverse and functional communities. The negative effects of biofilms on ships, underwater cables and pipelines have spawned research in antifouling approaches; however, little is known about their development in a northern temperate estuary, such as Narragansett Bay. The goal of this study was to investigate the first steps in biofouling in this area by assessing biofilm biomass through chlorophyll, …