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2006

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The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs Dec 2006

The Incorporation Of Atmospheric Variability Into Dirsig, Brian Dobbs

Theses

The goal of this research can be divided into two main areas. The first is to improve the existing manner in which DIRSIG samples and references the atmosphere. The second is to give DIRSIG the ability to incorporate atmospheric inhomogeneities, as well as the ability to accurately model them. DIRSIG has limitations in how it currently samples the atmosphere. From a geometric standpoint, it does not fully sample the energy which is scattered by the atmosphere towards the sensor (upwelled radiance). There are also other geometric issues which lead to inaccurate modeling results. One significant inaccuracy is the fact that …

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Deafdigest: Blue Edition, December 17, 2006, Barry Strassler Dec 2006

Deafdigest: Blue Edition, December 17, 2006, Barry Strassler

DeafDigest Blue 2006

No abstract provided.

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The Moving Writing Workshop, Robyn Francine Ward Dec 2006

The Moving Writing Workshop, Robyn Francine Ward

Education

This yearlong ethnographic case study documented the implementation of a 'moving' writing workshop at the first year of the Barnette Magnet School. This study focused on selected students in the 5/6 grades at the magnet school. In the moving writing workshop, the students changed rooms and worked in a variety of writing rooms that coincided with the writing process. The traditional writing process steps are prewriting/brainstorming, drafting, revise and response, editing, and publishing. The classroom teachers and staff at the school assisted students in the various writing rooms. This study looked at the benefits students gained by participating in the …

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Implementation Of Middle School Best Practice In A K-8 School: A Case Study Of The Planning Year For Barnette Magnet School In Fairbanks, Alaska, Colleen Smith-Thomas Dec 2006

Implementation Of Middle School Best Practice In A K-8 School: A Case Study Of The Planning Year For Barnette Magnet School In Fairbanks, Alaska, Colleen Smith-Thomas

Education

This study used a case study design to investigate the planning year for Barnette Magnet School, which opened in the fall of 2005. The conversion to a K-8 school is met with some difficulty by school districts across the nation because, while there are many benefits to keeping these 7th and 8th grade adolescents in their neighborhood elementary school where supportive relationships have already been developed, the fact remains that they have different social, emotional and academic needs than either elementary or high school students. This case study seeks to examine the current research into best educational practice for this …

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2006 Graduation And Hooding Ceremony For Juris Doctor Graduates, Nova Southeastern University Dec 2006

2006 Graduation And Hooding Ceremony For Juris Doctor Graduates, Nova Southeastern University

NSU Commencement Programs

No abstract provided.

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Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida St. Petersburg Dec 2006

Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida St. Petersburg

USF St. Petersburg Graduations and Commencements

Regional Chancellor's Award for Civic Leadership: Frances L. Stavros

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Adsorption Of Cu (Ii) And Cd (Ii) By Chininous Polymers, Hong Zhang Dec 2006

Adsorption Of Cu (Ii) And Cd (Ii) By Chininous Polymers, Hong Zhang

Engineering

Heavy metal contamination has emerged as a major health problem worldwide. Biosorption, using biological waste products as sorbents, may provide a cost effective treatment strategy. The current study investigated several types of biomass, generated from waste crab shells, as bio-sorbents to remove cadmium and copper in a batch reaction system. Isotherm studies suggested that uptake increased with increasing number of amine groups, i.e. increasing degree of deacetylation (DDA) as measured by hydrogen nuclear magnetic resonance (¹H-NMR) as well as Fourier Transform Infra-red (FTIR) spectroscopy. Potentiometric titration was shown not to be a valid method in measuring the DDA for medium …

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Protecting Family Drinking Water In Rural Alaska: Improved Water Management In Homes Without Running Water, Shawna R. Laderach Dec 2006

Protecting Family Drinking Water In Rural Alaska: Improved Water Management In Homes Without Running Water, Shawna R. Laderach

Engineering

The objective of this study was to investigate and make recommendations for improved in-home water management in an underserved rural Alaskan community without piped water. The main focus of the study is point-of-use disinfection. A model was developed based on experiments to predict the chlorine decay over time and the necessary chlorine dosage for waters used in the pilot community so that sufficient chlorine residual would remain during storage. TOC concentration, initial chlorination level, reduced iron and temperature were major factors impacting the chlorine consumption. Safe free chlorine levels of between 0.2 mg/L and 4.0 mg/L could be achieved in …

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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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Commencement Program 2006 December, University Of Texas At Arlington: School Of Social Work, The University Of Texas At Arlington Dec 2006

Commencement Program 2006 December, University Of Texas At Arlington: School Of Social Work, The University Of Texas At Arlington

Commencement Programs, Photos, and Video

No abstract provided.

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Pacific Ridge School Employee Policy And Procedures Manual, Pacific Ridge School Dec 2006

Pacific Ridge School Employee Policy And Procedures Manual, Pacific Ridge School

Human Resource and Volunteer Management

Pacific Ridge Employee Policy and Procedures Manual from 2006.

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Fall 2006 Commencement Program, University Of Alabama In Huntsville Dec 2006

Fall 2006 Commencement Program, University Of Alabama In Huntsville

Commencement Programs

No abstract provided.

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Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida Dec 2006

Commencement Convocation Program, St. Petersburg Campus, December 17, 2006, University Of South Florida

USF Graduation and Convocation Programs

Regional Chancellor's Award for Civic Leadership - Frances L. Stavros

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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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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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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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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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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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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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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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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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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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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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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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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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Building A Toolset For Fuel Cell Turbine Hybrid Modeling, Winston S. Burbank Dec 2006

Building A Toolset For Fuel Cell Turbine Hybrid Modeling, Winston S. Burbank

Engineering

Fuel cell/gas turbine hybrids show promise of high efficiency power generation, with electrical efficiencies of 70% or better shown by modeling, although these efficiency levels have not yet been demonstrated in hardware. Modeling of such systems is important to optimize and control these complex systems. This work describes a modeling tool developed to examine steady-state operation of different hybrid configurations. This model focuses on the area of compressor-turbine modeling, which is a key component of properly controlling fuel cell/gas turbine hybrids. Through side-by-side comparisons, this model has been tested and verified by Dr. Wolf of Brayton Energy [1]. This modeling …

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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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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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