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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
Snowshoe Hares (Lepus Americanus) Alter Feeding Behavior In Response To Coyote (Canis Latrans) And Moose (Alces Alces) Cues At Diverse Vegetation Densities, Zachary K. Lankist
Snowshoe Hares (Lepus Americanus) Alter Feeding Behavior In Response To Coyote (Canis Latrans) And Moose (Alces Alces) Cues At Diverse Vegetation Densities, Zachary K. Lankist
Student Scholarship
Prey interpret predator cues as a warning and use them to assess the danger of a given area. Multiple prey species avoid chemical cues from predators at feeding sites because the risk of death outweighs the benefit of food. However, we lack information regarding avoidance of chemical cues from competitors as well as how foraging behavior changes alongside vegetative cover. To test if chemical cues and veget~tive cover alter prey vigilance, number of visits, and time spent at feeding sites, I observed snowshoe hares (Lepus americanus) in plots containing coyote (Canis latrans; predator) and moose (Alces alces; competitor) urine across …
Sensitivity Analysis Of An Airfoil Using Computational Fluid Dynamics, Itay Savion
Sensitivity Analysis Of An Airfoil Using Computational Fluid Dynamics, Itay Savion
Thinking Matters Symposium Archive
In fixed wing aircrafts, the variation of lift coefficient with the angle of attack is a major consideration. This project explores the variation of lift force and lift coefficient of an SD2030 airfoil as a function of the angle of attack, Raynolds number, size of the computational domain, length of the wing, and the fluid mesh size. The problem is modeled using the flow simulation (CFD) module of SolidWorks. The outcome of this sensitivity analysis is compared with available experimental data.
Measuring Birth Trauma Rates In Maine Using Public Data, Mike Lapika
Measuring Birth Trauma Rates In Maine Using Public Data, Mike Lapika
Thinking Matters Symposium Archive
An increasing number of states are creating databases that collect and organize health insurance claims from public and private health care payers. Since December 2016, at least 18 states have these “all-payer claims databases” (APCDs), including Maine. APCDs are intended to inform cost containment and quality improvement by increasing transparency and informing consumer choice. For this project, we assessed how Maine’s APCD data might be used to produce standardized quality measures across facilities in the state. Specifically, we tested a birth outcome quality measure developed by the Agency for Healthcare Research and Quality (AHRQ), Birth Trauma – Injury to Neonate …
Synthesis And Analysis Of 6-Acetyl-1,2,3,4-Tetrahydropyridine, A Major Contributor To ‘Mousy’ Off-Flavor In Sour And Wild Beers, Liesel Krout
Thinking Matters Symposium Archive
Unexpected tastes can negatively impact consumer experience in the beer industry. One such taste, a ‘mousy’ off-flavor, is diminishing the quality of sour and wild beers throughout the brewing community. The unpleasant flavor is a result of the combined presence of three organic compounds: 6-acetyl-1,2,3,4-tetrahydropyridine (ATHP), 2-acetyl-1-pyrroline, and 2-ethyl-3,4,5,6-tetrahydropyridine. Because of its unpredictable nature, brewers must wait for the compound to disappear before distribution, costing them valuable time and revenue. The factors responsible for formation, reasons for persistence, and degradation timelines of the compounds were unknown. A method for quantification was therefore necessary to determine those characteristics, and such quantification …
Convolutional Neural Networks For Protein Image Classification, Nick Littlefield
Convolutional Neural Networks For Protein Image Classification, Nick Littlefield
Thinking Matters Symposium Archive
A solution to the Kaggle competition: Human Protein Atlas Image Classification. Using microscopic images of cells provided by the Human Protein Atlas, convolutional neural networks, CNNs, were used to analyze and predict the location of protein patterns. Challenges included working with an unbalanced dataset, finding a correct learning rate, and choosing a correct architecture to solve the problem. To learn how to overcome these challenges and gain more understanding of the problem, various kernels and discussion posts for the competition, as well as papers on different CNN architectures were used.
Changes In Spring Arrival Times: Climate Change And The Phenology Of Spring Bird Migration, Aaron Svedlow
Changes In Spring Arrival Times: Climate Change And The Phenology Of Spring Bird Migration, Aaron Svedlow
Student Scholarship
Climate change and weather affect the phenology of bird migration; however, specific climatological factors associated with these observed effects have only recently been described. The relationship between local, regional, and global climate patterns and avian migration are increasingly important to understand due to the widespread, and potentially negative, implications (such as reduced fecundity) of rapid human induced climate change on bird populations. Migratory birds are under selective pressure to arrive at breeding areas at the optimal time to set up nesting territories and exploit seasonally abundant food resources, and because climate change has the potential to occur more rapidly than …
An Evaluation Of Elemental Composition Of Soils Associated With Ground Nesting Ants In The Family Formicidae In Somerset County, Maine, Haley H. Depner
An Evaluation Of Elemental Composition Of Soils Associated With Ground Nesting Ants In The Family Formicidae In Somerset County, Maine, Haley H. Depner
All Student Scholarship
Ants are keystone organisms and engineers in many ecosystems, playing an important role in nutrient cycling and rearrangement of organic and inorganic materials through foraging, waste management and, in subterranean species, nest construction and maintenance. In this study, I conducted elemental analysis of soils for calcium, copper, iron, potassium, manganese and zinc in and around the colonies of subterranean nesting ants. The two-step analysis used in this study utilizes the efficiency of X-Ray Fluorescence (XRF) Spectrometry to look for overall trends in elemental composition followed by Flame Atomic Absorbance (AA) to achieve higher resolution of select elements of interest as …
An Examination Of Computational Methods Related To G/M/C Queueing, Thomas Michaud Ms
An Examination Of Computational Methods Related To G/M/C Queueing, Thomas Michaud Ms
All Student Scholarship
The following examination of computational methods related to queues with general arrivals (i:i:d: but of unknown distribution), multiple identical servers with i:i:d: exponential service times, and ordinary first come, first served service (hereafter referred to as G/M/c to use existing naming conventions) seeks to investigate the current models and provide new results based on a draft convolution method proposed by El-Taha[3]. The new model will demonstrate the use of distributions with coefficients of variance ranging from zero to near infinity to provide flexibility in simulating a range of potential arrival distributions, and we include detailed results and software for both …