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2006

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Experimental And Numerical Fluid Flow Analysis Of An Intersecting Channel Flow-Field For Proton Exchange Membrane Fuel Cell Applications, Venkata A. Gudimetla Dec 2006

Experimental And Numerical Fluid Flow Analysis Of An Intersecting Channel Flow-Field For Proton Exchange Membrane Fuel Cell Applications, Venkata A. Gudimetla

Engineering

The present work aims to analyze the geometry of a new flow-field plate called the intersecting channel flow-field, developed at the University of Alaska Fairbanks (UAF). Four different two-dimensional models have been investigated and analyzed for the uniform spatial mass flow distribution of air in the channels. Based on the outcome of the two-dimensional models, a three-dimensional model of the flow-field was analyzed using CFD and the results were compared with those from an experiment which was conducted at UAF. The results from the three-dimensional numerical analysis showed a minor deviation from the experimental results.

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In-Cylinder Pressure Based Combustion Performance Evaluation Of Syntroleum Synthetic And Conventional Diesel Fuels, Praveen K. Kandulapati Dec 2006

In-Cylinder Pressure Based Combustion Performance Evaluation Of Syntroleum Synthetic And Conventional Diesel Fuels, Praveen K. Kandulapati

Engineering

Synthetic fuels produced from non-petroleum based feedstocks can effectively replace the depleting, petroleum-based conventional fuels while significantly reducing emissions. The zero sulfur content and the near zero percentage of aromatics in the synthetic fuels make them promising clean fuels to meet the upcoming emissions regulations. However, due to their significantly different properties when compared to conventional fuels, existing engines must be tested extensively to study their performance with the new fuels. The current work presents a detailed in-cylinder pressure measurement based comparison of the combustion performance of a natural gas derived synthetic diesel fuel, supplied by Syntroleum Corporation based in …

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Geology Of The Caribou Creek Area, Big Delta Quadrangle, East-Central Alaska, Richard R. Lessard Dec 2006

Geology Of The Caribou Creek Area, Big Delta Quadrangle, East-Central Alaska, Richard R. Lessard

Geosciences

The Caribou Creek area, in the Big Delta C4 Quadrangle, East-Central Alaska, is known for significant placer gold, but no lode source. I present a new 200 km² area geologic map utilizing ground based mapping, airborne geophysical surveys, and follow-up laboratory investigations. Mapping and petrography delineate 10-20 km² blocks containing contrasting rock units and mineral assemblages. Amphibolite facies blocks contain abundant post-kinematic andalusite, with central blocks containing partially replaced kyanite, and blocks to the southeast and west containing post-kinematic sillimanite. Geothermobarometry shows that the amphibolite-facies blocks experienced pressures/temperatures of 11.5 kbars/650°C, followed by a collisional event associated with low-P/variable T …

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Winter Feeding Ecology And Biomagnification Of Organochlorine Contaminants In Alaska Polar Bears, Torsten W. Bentzen Dec 2006

Winter Feeding Ecology And Biomagnification Of Organochlorine Contaminants In Alaska Polar Bears, Torsten W. Bentzen

Biological Sciences

Dietary pathways expose polar bears to a variety of contaminant profiles and concentrations, ranging from bowhead whale (Balaena mysticetus) as one of the least contaminated marine mammals to the more highly contaminated upper trophic level ringed seal (Phoca hispida) which represent the majority of their annual diet. We used stable isotopes [delta]¹⁵N and [delta]¹³C to estimate trophic status of 139 free-ranging polar bears sampled along Alaska's Beaufort Sea coast in spring 2003 and 2004. The [delta]¹⁵N values of polar bear packed blood cells ranged from 18.2% to 21.4% with a mean of 19.5% (SD=0.7) in 2003 and 19.9% (SD=0.7) in …

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Micropulse Lidar Observations Of Aerosols Over The Atmospheric Radiation Measurement Site At Barrow, Ramaswamy A.S.R. Tiruchirapalli Dec 2006

Micropulse Lidar Observations Of Aerosols Over The Atmospheric Radiation Measurement Site At Barrow, Ramaswamy A.S.R. Tiruchirapalli

Atmospheric Sciences

Micropulse lidar (MPL) is a ground-based optical remote sensing system designed to determine the vertical structure of clouds and aerosols in the atmosphere. An MPL has operated at Barrow, Alaska since November 2002. From these data, we seek to determine the altitude of aerosol layers in the free troposphere from lidar backscatter profiles. Layer heights are then fed into the HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory Model) model, a back-trajectory model developed by NOAA (National Oceanic and Atmospheric Administration) to compute isentropic back-trajectories. The model is run interactively using the READY interface and can calculate trajectories from multiple heights within …

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A Phenomenology Of Women And Aging: A Communication Perspective, Grace F. Pedersen Dec 2006

A Phenomenology Of Women And Aging: A Communication Perspective, Grace F. Pedersen

Communication

This qualitative study examines the female experience of aging in late-midlife. It involves women between 49 and 70 years of age, who characterize late-midlife years through narratives of lived experience. Their stories provide description of events that introduced or reinforced their sense of self-as-aging, and relate insights gained socially and relationally in the aging process. Conversational interviews, with participant observation of nonverbal communication, were conducted and recorded as my method of data collection, and phenomenological methodology was used in description, analysis, and interpretation of the resulting capta.

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Inter-Individual Variation In Gene Expression In Torpid And Interbout Euthermic Arctic Ground Squirrels, Adlai Max Burman Dec 2006

Inter-Individual Variation In Gene Expression In Torpid And Interbout Euthermic Arctic Ground Squirrels, Adlai Max Burman

Chemistry and Biochemistry

Alaskan Arctic ground squirrels, Spermophilus paryii, hibernate about seven months per year. During two-week torpor periods, respiration, circulation, metabolism, and catabolism are dramatically decreased, except for brief periods of interbout euthermia. These divergent hibernation states provide a particularly compelling model for variance-based studies of global gene expression. A guiding hypothesis in this Thesis is that Arctic ground squirrels exit interbout euthermia and enter torpor with an invariant metabolic scaffolding of various metabolites that are erected to serve as a ready metabalome for the challenges of the next brief return to euthermia. To develop this hypothesis further, I performed an exploratory …

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The Role Of Corticosterone And Corticosteroid-Binding Globulin In Reproduction Of Red-Legged Kittiwakes (Rissa Brevirostris), Thomas D. Dempsey Dec 2006

The Role Of Corticosterone And Corticosteroid-Binding Globulin In Reproduction Of Red-Legged Kittiwakes (Rissa Brevirostris), Thomas D. Dempsey

Biological Sciences

The goal of this study was to determine to what extent, and by what physiological and behavioral mechanisms, avian reproductive performance is related to environmental variability. Specifically, I explored relationships between components of the physiological stress response, reproductive behavior, and reproductive performance in the red-legged kittiwake (Rissa brevirostris), a long-lived seabird. I found that individuals respond to food-related stress by altering levels of both corticosteroid-binding globulin (CBG) and the primary avian glucocorticoid, corticosterone (Cort). I also found a negative association between breeding adults' Cort concentrations and population-level reproductive success; although no such association existed between CBG and reproductive success. The …

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Patterns Of And Controls Over Nitrogen Inputs By Green Alder (Alnus Viridis Ssp. Fruticosa) To A Secondary Successional Chronosequence In Interior Alaska, Jennifer S. Mitchell Dec 2006

Patterns Of And Controls Over Nitrogen Inputs By Green Alder (Alnus Viridis Ssp. Fruticosa) To A Secondary Successional Chronosequence In Interior Alaska, Jennifer S. Mitchell

Biological Sciences

Patterns of and controls over N₂ fixation by green alder (A. viridis) were studied in post-fire, mid-succession, and white spruce upland forests in interior Alaska during 1997-2000, focusing on the hypothesis that ecosystem-level nitrogen (N) inputs decrease with successional development. Across all stands, alder created islands of elevated soil N and carbon, depleted soil phosphorus (P), and more acidic soils, effects which translated to the stand-level in response to greater alder stem density. Rates of N₂ fixation (measured by acetylene reduction = ARA) closely tracked plant phenology during the 1997 (a drought year) and 1998 (a year of normal precipitation) …

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Reindeer Herding, Weather And Environmental Change On The Seward Peninsula, Alaska, Kumi L. Rattenbury Dec 2006

Reindeer Herding, Weather And Environmental Change On The Seward Peninsula, Alaska, Kumi L. Rattenbury

Biological Sciences

Intrinsic to the discussion about climate change is the effect of daily weather and other environmental conditions on natural resource-based livelihoods. Reindeer herders on the Seward Peninsula, Alaska have relied on specific conditions to conduct intensive herding in response to winter range expansion by the Western Arctic Caribou Herd (WAH). From 1992 to 2005, over 17,000 reindeer (affecting 13 of 15 herds) were lost due to mixing and emigration with the WAH. An interdisciplinary case study with one herder provided insights about the role of weather within the social-ecological system of herding. Inclement conditions disrupted herding plans at the same …

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Geodatabase Development And Gis Based Analysis For Resource Assessment Of Placer Platinum In The Offshore Region Of Goodnews Bay, Alaska, Thomas Oommen Dec 2006

Geodatabase Development And Gis Based Analysis For Resource Assessment Of Placer Platinum In The Offshore Region Of Goodnews Bay, Alaska, Thomas Oommen

Engineering

Goodnews Bay, southwest Alaska, is known for extensive Pt reserves that have their source in the neighboring Red Mountain. The reserves potentially extend offshore into the Bering Sea. This study aims at developing a geodatabase to integrate all offshore platinum related data collected by researchers and agencies in the past, with the intent to identify data gaps. Based on these data gaps 49 new areas were sampled for Pt and geophysical data were collected in summer 2005. Spatial distribution map for offshore Pt was created using a new Multiple Regression Pattern Recognition Technique (MRPRT) that gave an R²=0.76, a significant …

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Change-Point Tests For Precipitation Data, Michael Robbins Dec 2006

Change-Point Tests For Precipitation Data, Michael Robbins

All Theses

A new method is required for change-point testing of precipitation data that is capable of applying valid precipitation models. First, stochastic precipation models are researched and classified. Typically, the occurrence of rain is modeled using a two-state, first-order Markov chain, and the intensity of rain is modeled using a two-parameter gamma distribution. Using the likelihood ratio test statistic, methods are devoloped for testing for fixed and unknown change-points. These methods are developed for various models, including the MC/gamma model and simplified versions. The distribution of the LRT is unknown, however its asymptotic distribution is known for both the fixed and …

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Canola Quality In Alaska, 2004 And 2005 Harvests, Hans Geier Dec 2006

Canola Quality In Alaska, 2004 And 2005 Harvests, Hans Geier

Research Progress Reports

About one acre of Polish canola (Brassica rapa) was planted on the Agricultural and Forestry Experiment Station (AFES) Delta Junction research site in 2004 and 2005. Reward, a Polish canola variety, was planted. The Reward seeds were from a local grower who bought it in Alberta. Approximately four 100-pound bags of canola were harvested in 2004, totaling a yield of 400 pounds per acre. The 2005 canola crop on the AFES farm yielded about 850 pounds per acre. Oil press equipment was set up at the AFES farm in University of Alaska Fairbanks (UAF) in June 2005, and seeds from …

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Bathymetric And Spatial Distribution Of Echinoderms On Seamounts In The Gulf Of Alaska, Danielle Parker Underwood Dec 2006

Bathymetric And Spatial Distribution Of Echinoderms On Seamounts In The Gulf Of Alaska, Danielle Parker Underwood

Fisheries

The bathymetric and spatial distribution of echinoderms was examined on five seamounts in the Kodiak-Bowie seamount chain in the northern Gulf of Alaska from video transects of 200 or 500 m length, conducted at approximately 700, 1700 and 2700 m depths with the DSV Alvin in August, 2004. Temperature and salinity varied significantly with depth, but not between seamounts; an oxygen minimum zone encompassed the shallowest depth sampled. Holothuroid (Pannychia and Psolus) and asteroid density for the shallower depth category was 19.94·100 m⁻² and 2.07·100 m⁻², significantly higher than at the deeper depths. Asteroid density generally decreased northwesterly along the …

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The Effects Of Intense Fire On Headwater Streams Of The Colville National Forest, Wa, Cassie Danielle Mellon Dec 2006

The Effects Of Intense Fire On Headwater Streams Of The Colville National Forest, Wa, Cassie Danielle Mellon

Fisheries

Forest fires play an important role in shaping ecosystems, and there has been growing concern on the effects of high intensity fires on forest and aquatic ecosystems. Headwater streams are highly connected to riparian and surrounding terrestrial systems, and to downstream aquatic systems, partly through prey and organic matter transfers via aquatic invertebrate drift and emergence. Because of their small size, headwater streams may experience the greatest initial impact from forest fire, but may also return to pre-fire conditions quicker than larger streams. In this study, headwater streams from replicated burned and control watersheds were sampled in the two years …

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Arrowtooth Flounder Atheresthes Stomias Diet And Prey Consumption Near Kodiak Island, Alaska, Brian Anthony Knoth Dec 2006

Arrowtooth Flounder Atheresthes Stomias Diet And Prey Consumption Near Kodiak Island, Alaska, Brian Anthony Knoth

Fisheries

The arrowtooth flounder Atheresthes stomias (ATF) population in the Gulf of Alaska has increased dramatically over the past 25 years and the resulting ecosystem impacts are unclear. Arrowtooth flounder diet and prey consumption was studied to more accurately assess the predator-prey relationships of this key predator near Kodiak Island, Alaska. Temporal and ontogenetic diet trends were quantified from the analysis of 742 ATF stomachs sampled from annual bottom trawl surveys conducted in May and August from 2002 to 2004. Several significant dietary trends were found, most notably: 1) euphausiids decreased in dietary importance from May to August whereas the importance …

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Biophysical Factors Associated With The Marine Growth And Survival Of Auke Creek, Alaska Coho Salmon (Oncorhynchus Kisutch), Joshua Benjamin Robins Dec 2006

Biophysical Factors Associated With The Marine Growth And Survival Of Auke Creek, Alaska Coho Salmon (Oncorhynchus Kisutch), Joshua Benjamin Robins

Fisheries

Correlation and stepwise regression analyses were used to investigate relationships between growth in four distinct marine habitats, marine survival, and biophysical indices for Auke Creek coho salmon, a coho salmon population in Southeast Alaska. Early marine growth of males and females were positively correlated, but neither was correlated with early marine growth of jacks. Regional biophysical indices had significant effects on early marine growth of jack, but not on early marine growth of adult coho salmon. Sea surface temperature and number of hatchery pink and churn salmon juveniles released had negative and positive effects on growth in strait habitat, respectively. …

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Contribution Of Muskeg Channel Habitats To Juvenile Coho Salmon Production In The Situk River, Alaska, Kevin L. Schaberg Dec 2006

Contribution Of Muskeg Channel Habitats To Juvenile Coho Salmon Production In The Situk River, Alaska, Kevin L. Schaberg

Fisheries

This study examines seasonal patters of habitat use by juvenile coho salmon in the Situk River and the importance of muskeg channels. To determine seasonal patterns I trapped fish from a range of habitats every two weeks during the summer of 2005. Analysis of the length-frequency data these samples provided showed most fry emerged in gravel bedded channels and that a substantial number of these fish then moved into muskeg channels during their first summer, rearing there until smolting at age 1 + or 2+. To estimate the number of coho salmon using muskeg channels, I established a relationship between …

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Isostasy And Origin Of The Alpha-Mendeleev Ridge, Arctic Ocean, Christina C. Williams Dec 2006

Isostasy And Origin Of The Alpha-Mendeleev Ridge, Arctic Ocean, Christina C. Williams

Geosciences

The Alpha-Mendeleev Ridge is an aseismic ridge bisecting the Amerasian Basin, Arctic Ocean. There is no widely accepted theory of formation. Gravity and bathymetry data from the poorly understood ridge are used to constrain the isostatic compensation of the feature in the frequency domain. Spectral analysis of the cross correlation between gravity and bathymetry along nine data transects collected from submarines and ice breakers over the ridge yield an average crustal thickness estimate of 30 km and density estimate of 2.75 g-cm⁻³. It also suggests compensation by local isostasy, as a near-ridge oceanic plateau or an extended fragment of continental …

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Implications For Strain Accommodation In An Oblique Subduction Zone: New Paleomagnetic And Geologic Data From The Central Aleutian Arc, Alaska, Lena Krutikov Dec 2006

Implications For Strain Accommodation In An Oblique Subduction Zone: New Paleomagnetic And Geologic Data From The Central Aleutian Arc, Alaska, Lena Krutikov

Geosciences

Oblique subduction results in partitioning of strain into arc-normal and arc-parallel components, and a complex pattern of upper plate deformation. Although partitioning of strain is observed in areas of oblique subduction around the world, the kinematics of strain accommodation are poorly understood. This is particularly true in the Aleutian arc because of a paucity of geologic and geophysical data. In the Aleutian arc, models previously proposed for forearc deformation have been characterized by clockwise rotation and westward translation of discrete tectonic blocks. This study utilizes two separate datasets to help constrain these mechanisms. The first step utilizes new high-resolution multibeam …

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Physiological And Behavioral Responses Of Tanner Crabs (Chionoecetes Bairdi) To Handling, Emersion And Temperature, Sonya Y. El Mejjati Dec 2006

Physiological And Behavioral Responses Of Tanner Crabs (Chionoecetes Bairdi) To Handling, Emersion And Temperature, Sonya Y. El Mejjati

Marine Biology

Commercially harvested Tanner crabs (Chionoecetes bairdi) are exposed to physical stressors during capture and sorting including changes in temperature and oxygen availability. This study characterizes the physiological and behavioral responses of Tanner crabs exposed to air (emersion) at 8 and -15°C for various durations. Concentrations of glucose and lactate in hemolymph measured between 30 and 120 min following emersion for 45 min differed between animals exposed to 8 or -15°C. Glucose concentrations were higher among animals emersed at 8°C than those exposed to -15°C within the intervals sampled. Lactate concentrations were unchanged at intervals following emersion at 8°C, while they …

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Temporal And Spatial Distribution Of Grazers And Kelp Phlorotannins In Kachemak Bay, Alaska, Angela M. Dubois Dec 2006

Temporal And Spatial Distribution Of Grazers And Kelp Phlorotannins In Kachemak Bay, Alaska, Angela M. Dubois

Marine Biology

The potential influence of grazers on the density and distribution of kelp thalli is substantial and may be mediated by kelp phlorotannins serving in a defensive role. The purpose of this study was to determine how temporal and spatial phlorotannin patterns in four kelp species in Kachemak Bay, Alaska, are influenced by density and distribution of the gastropod grazer Lacuna vincta and environmental variables. Temporal phlorotannin patterns from June 2004 through December 2005 were mainly explained by the life history of particular kelp species as well as strong correlations with light attenuation and nitrate concentration. The Optimal Defense Theory of …

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Humpback Whale Habitat Use Patterns And Interactions With Vessels At Point Adolphus, Southeastern Alaska, Nicole Koehler Dec 2006

Humpback Whale Habitat Use Patterns And Interactions With Vessels At Point Adolphus, Southeastern Alaska, Nicole Koehler

Marine Biology

Humpback whales at Point Adolphus, in southeastern Alaska, are faced with the challenge of maximizing their energy gain from feeding and minimizing energy losses that can occur due to disturbance by vessel traffic. Point Adolphus is unique because of abundant prey resources that attract high concentrations of humpback whales during the summer and high levels of vessel activity. Using scan sampling and focal behavior observation sessions data were collected from an elevated shore station on the northern coast of Chichagof Island in 2001. Humpback whale numbers peaked during early ebb tide. Whales were distributed west during ebbing tides and east …

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Summer Distribution And Habitat Characteristics Of Fin Whales (Balaenoptera Physalus) And Humpback Whales (Megaptera Novaeangliae) Off Northeast Kodiak Island, Alaska, Lisa Susan Baraff Dec 2006

Summer Distribution And Habitat Characteristics Of Fin Whales (Balaenoptera Physalus) And Humpback Whales (Megaptera Novaeangliae) Off Northeast Kodiak Island, Alaska, Lisa Susan Baraff

Marine Biology

Summer distributions of fin (Balaenoptera physalus) and humpback (Megaptera novaeangliae) whales were examined relative to bathymetry, oceanography, and zooplankton composition and density in Marmot and Chiniak Bays (Kodiak Island, AK) during 2002 and 2003. Habitat use and habitat partitioning were assessed using Monte Carlo and randomization tests, logistic regression analyses, and kernel density probability contours of high-use areas. Fin whales associated with deeper, cooler waters near areas of maximum slope and consistently used Marmot Bay. Fin whale spatial-temporal distribution likely coincided with Neocalanus copepod concentrations during early summer and adult euphausiids later in summer. Fin whale associations with Pseudocalanus copepods …

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Estimating ¹³C And ¹⁵N Turnover Rates In The Arctic Amphipod Onisimus Litoralis: Implications For Analysing The Transfer Of Sea Ice Production To Under-Ice Fauna, Mette R. Nielson Dec 2006

Estimating ¹³C And ¹⁵N Turnover Rates In The Arctic Amphipod Onisimus Litoralis: Implications For Analysing The Transfer Of Sea Ice Production To Under-Ice Fauna, Mette R. Nielson

Marine Biology

The Arctic amphipod Onisimus litoralis migrates from the seafloor to the sea ice to graze on ice algae, a rich food source during the Arctic spring, resulting in complex trophic dynamics. I assessed the effect of temperature and season on the rate of change in stable isotopic composition of amphipods by simulating a diet switch in the laboratory using amphipods collected near Barrow, Alaska in spring and autumn 2004. Additionally, the proportional contributions of food sources to the amphipods' diet in the field were estimated. Isotopic change occurred faster in spring with half-lives of 13.9 (1°C) and 18.7 (4°C) days …

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Interrelationship Among Temperature, Metabolism, Swimming Performance And Recovery In Pacific Cod (Gadus Macrocephalus): Implications Of A Changing Climate, Shannon K. Hanna Dec 2006

Interrelationship Among Temperature, Metabolism, Swimming Performance And Recovery In Pacific Cod (Gadus Macrocephalus): Implications Of A Changing Climate, Shannon K. Hanna

Marine Biology

Physiological constraints are suggested to contribute to the observed changes in relative abundance of Pacific cod (Gadus macrocephalus) seen in association with interdecadal changes in sea surface temperatures. To examine this concept, two experiments were conducted to determine critical swimming speed (Ucrit), rates of oxygen consumption and recovery post-exhaustion of adult cod acclimated to different temperatures. In addition, hematocrit and plasma concentrations of cortisol, metabolites and ions from resting and exhausted fish were measured to assess the impact of swim trials on fish condition. In experiment one, fish acclimated to 4°C had similar mean Ucrit (1.07 BL/s) and resting metabolic …

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Enhancing Student And Graduate Employability In The Hospitality Industry: A Video Project, Thyagarajan V. Ammachathram Dec 2006

Enhancing Student And Graduate Employability In The Hospitality Industry: A Video Project, Thyagarajan V. Ammachathram

Master's Theses and Doctoral Dissertations

Employment interviews are designed to judge the qualifications and desirability of a candidate for a job. Research shows that interviews are incredibly important in getting the right job. A study conducted by the Bureau of National Affairs pinpointed the most important factors in hiring applicants, with employment interviews being the single most important factor in getting a job (Elfner, 2006). Hospitality firms are placing greater emphasis on the ability of graduates to fit within their businesses (Pittaway & Thedham, 2005). Even though qualifications and skills are vital for selection, candidates should know how to set themselves apart from other candidates …

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Community Development Quota Program: Community Sustainability And The Bering Sea, Lauren A. Krueger Dec 2006

Community Development Quota Program: Community Sustainability And The Bering Sea, Lauren A. Krueger

Arctic and Northern Studies

Sustainability and resilience are worthwhile goals for western Alaskan communities. From shifting global markets to climate change, these communities face numerous novel threats to their survival that increased resilience can mitigate. This thesis examines how an innovative community management scheme, the Community Development Quota (CDQ) Program, can contribute resilience to its communities, how those resilience-lending aspects can be better utilized, and what obstacles prevent sustainability in western Alaska. Qualitative, semi-structured interviews with ten community residents from four of the six CDQ groups were conducted and CDQ relevant documents and reports were evaluated to measure eight indicators of sustainability and resilience: …

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Drifting And Directed: The Post-High School Plans Of Students From Three Communities In Rural Alaska, Aaron T. Doyle Dec 2006

Drifting And Directed: The Post-High School Plans Of Students From Three Communities In Rural Alaska, Aaron T. Doyle

Arctic and Northern Studies

Many students in Alaska's rural villages complete their secondary education without a direction for life after high school. Students consistently report high aspirations to vocational training, college, and careers that require postsecondary education, yet few end up realizing these plans. To understand this paradox, this thesis uses qualitative methods to examine the influences that shaped the post-high school plans of 49 rural Alaska Native students in three villages in western Alaska. This thesis finds that misgivings about the purpose of education, difficult choices about leaving home, a substandard education, a lack of information, and perceptions of failure all combined to …

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A Wireless Early Warning Sudden Infant Death Syndrome (Sids) Detection Device, Patrick Jason Rider Dec 2006

A Wireless Early Warning Sudden Infant Death Syndrome (Sids) Detection Device, Patrick Jason Rider

Engineering

The sudden and unexplained death of an infant younger than one year, Sudden Infant Death Syndrome (SIDS), is currently the leading cause of death for infants in the United States. This thesis gives the design for a prototype of an early warning SIDS detection device. The prototype monitors three parameters; temperature, motion, and level of oxygen saturation in blood. Data of these parameters is transmitted wirelessly to a remote location for data analysis. Hardware limitations result in delaying the integration of all three sensor signals for a later period. Greater improvements in the hardware will allow for both a decrease …

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