Digital Commons Network^™

An Anion Characterization Of A Constructed Wetland Used For Chlorinated Ethene Remediation, Bradley M. Bugg

Theses and Dissertations

Chlorinated ethenes physical properties as well as its ubiquitous state at DOD installations makes it a priority for innovative remediation efforts. Current techniques are expensive and time consuming to maintain. Constructed wetlands suggest an inexpensive and operational alternative to conventional technologies. Sub-surface flow wetlands provide the anaerobic zones necessary to reduce the recalcitrant chlorinated solvents prior to anaerobic or aerobic mineralization of its daughter products. A vertical flow cell to include sequential sedimentary layers of two hydric soil lifts and a mix of hydric soil and woody compost was the subject of this investigation. This study focused on the statistical …

Characterization Of The Surface Morphology Of Bacillus Spores By Atomic Force Microscopy, Ruth A. Zolock

Theses and Dissertations

The surface morphology of Bacillus spores was resolved by atomic force microscopy in order to determine if characteristic surface features could be used to distinguish between closely related species. Four strains were studied: Bacillus anthracis Sterne strain, Bacillus thuringiensis var. kurstaki, Bacillus cereus strain 569, and Bacillus globigii var. niger. The spores were separated from a nutrient agar culture by filtering and centrifugation, suspended in deionized water, and immobilized on a graphite substrate by spin-coating. Atomic force microscopy imaging was done using intermittent contact mode, in air, under reduced humidity. Seven to ten spores of each species were fully characterized …

The Management Of Energy Savings Performance Contracts (Espcs), Ericka M. Dailey

Theses and Dissertations

Energy Savings Performance Contracts (ESPCs) originated to accomplish several objectives: (1) to meet energy efficiency goals mandated by executive orders and energy policies; (2) to improve federal government facilities using funds allocated for utility bills; and (3) to receive repayment of expenditures through energy savings reflected in reduced utility bills. In ESPC's, the contractor guarantees savings to the federal government agency. 10 CFR 436 limits the time necessary for payback. However, this regulation and others were written prior to the deregulation of utility companies. This theory is based on the underlying premise that the contractor payback is a direct result …

Using Relational Schemata In A Computer Immune System To Detect Multiple-Packet Network Intrusions, John L. Bebo

Theses and Dissertations

Given the increasingly prominent cyber-based threat, there are substantial research and development efforts underway in network and host-based intrusion detection using single-packet traffic analysis. However, there is a noticeable lack of research and development in the intrusion detection realm with regard to attacks that span multiple packets. This leaves a conspicuous gap in intrusion detection capability because not all attacks can be found by examining single packets alone. Some attacks may only be detected by examining multiple network packets collectively, considering how they relate to the "big picture," not how they are represented as individual packets. This research demonstrates a …

Groundwater Flow Through A Constructed Treatment Wetland, Andrew C. Entingh

Theses and Dissertations

This study examines the flow of groundwater through one of the treatment cells. A major goal of the study is to determine whether the system design facilitates uniform vertical flows through the subsurface soil sediments or if preferential flows occur. Conceptually, uniform flows will achieve the most efficient degree of contaminant removal possible by evenly dispersing the groundwater contaminants throughout the full volume of the subsurface media. A three-dimensional grid of piezometers is used to generate potentiometric contour maps, and in-situ tests of hydraulic conductivity facilitate construction of a numerical computer model. The contours of hydraulic head, measured conductivities, and …

A Direct Sequence Code-Division Multiple-Access Local Area Network Model, James R. Rapallo Jr.

Theses and Dissertations

The United States Air Force relies heavily on computer networks for every-day operations. The medium access control (MAC) protocol currently used by most local area (LAN) permits a single station to access the network at a time (e.g. CSMA/CD or Ethernet). This limits network throughput to, at most, the maximum transmission rate of a single node with overhead neglected. Significant delays are observed when a LAN is overloaded by multiple users attempting to access the common medium. In CSMA/CD, collisions are detected and the data sent by the nodes involved are delayed and transmitted at a later time. The retransmission …

Evaluation And Mission-Specific Optimization Of Satellite Packet Telemetry Protocol For Use On Dod Flight Test Ranges, Beth A. Trapp

Theses and Dissertations

The DoD test range community has come to the realization that its telemetry abilities are obsolete. Efforts are therefore underway to improve telemetry systems at DoD test ranges. The overall objective of this project was to evaluate the practical use of the CCSDS packet telemetry protocol in DoD test ranges and determine the configuration that would maximize performance based on mission requirements. A secondary objective was to compare the CCSDS and ATM protocols in order to substantiate further exploration of using ATM in future DoD telemetry systems. Modeling and simulation of the CCSDS protocol showed a correlation between three CCSDS …

Process Mapping A Diminishing Manufacturing Sources And Materiel Shortages Reactive Management Strategy: A Case Study, Robert E. Overstreet

Theses and Dissertations

In order to handle its obligations, the Brazilian Ministry of Defense (MoD) will need an information system capable of managing logistics information from all military services. A project to develop an integrated information system to fit the requirements of different, but connected, organizations has inherent challenges. Differences in the organizational structures, cultures and political aspects, are key issues to be observed before the development to assure the project's success. The same is applicable when trying to adapt an already existing information system to fill the needs of another organization. In the new organization, it is mandatory to assess the feasibility …

An Investigation Of Environmental Factors That Influence Knowledge Transfer In The Air Force, Darin A. Ladd

Theses and Dissertations

The Air Force presently spends more than $4.9 billion annually on information technology (IT). However, the IT infrastructure has been identified as inappropriate for supporting the Air Force mission. To improve this situation the Air Force has identified infrastructure flexibility as key to future success. To find the level of flexibility, this study measured the perception of Air Force communications, computer, and information career field members (33SX and 3COX2 career fields) on the level of IT infrastructure modularity (data modularity and application modularity) and integration (platform compatibility and network connectivity). This thesis looked at two constructs that indicate IT infrastructure …

Improving Performance Analysis Of The Distribution Segment Of The Air Force Logistics Pipeline, Heinz H. Huester

Theses and Dissertations

The Army of the future will need to be able to quickly respond to a full spectrum of conflict-from stability and support operations to major theater wars. Today, military leaders have limited options when reacting to the wide range of current threats existing in our world. The nation needs ground combat units that can deploy very rapidly to stabilize a hostile area while possessing combat capabilities able to terminate a threat if necessary. The Army's answer to this requirement is the Interim Brigade Combat Team (IBCT). This study employs an Arena 5.0 discrete-event simulation model to explore the capabilities of …

Modeling And Analysis Of Multicommodity Network Flows Via Goal Programming, Matthew A. Scott

Theses and Dissertations

In this research we focused on the mobility system modeled by the AMC mobility planner's calculator (AMPCALC). We developed AMPCALC as a user-friendly tool and allow the user to easily carry out strategic airlift, air refueling and aeromedical evacuation calculations that are covered in Air Force Pamphlet 10-1403. In this study, Excel software and its macro language, Visual Basic for Application, are our two main tools. In the methodology of the thesis we examined fundamental aspects of the mobility system in AMPCALC. We discussed formulation logic of the mobility cycle. We presented ramp use optimization and tanker optimization processes. We …

Design And Fabrication Of Micro-Electro-Mechanical Structures For Tunable Micro-Optical Devices, Michael C. Harvey

Theses and Dissertations

Tunable micro-optical devices are expected to be vital for future military optical communication systems. In this research I seek to optimize the design of a microelectromechanical (MEM) structure integrated with a III-V semiconductor micro-optical device. The resonant frequency of an integrated optical device, consisting of a Fabry-Perot etalon or vertical cavity surface emitting laser (VCSEL), may be tuned by applying an actuation voltage to the MEM Flexure, thereby altering the device's optical cavity length. From my analysis I demonstrate tunable devices compatible with conventional silicon 5V integrated circuit technology. My design for a Fabry-Perot etalon has a theoretical tuning range …

Analyzing Differences Between Public And Private Sector Information Resource Management: Chief Information Officer Challenges And Critical Technologies, Scott M. Mitchell

Theses and Dissertations

The United States Air Force (AF) has experienced a downward trend in retention of information systems (IS) workers over the past five years. This research draws on the employee turnover model proposed by Mobley et al. (1979) and the work of Schein (1987) to measure the career anchors, job satisfaction, and turnover intention of AF IS workers to determine if those whose job type and career anchor match report higher satisfaction and lower turnover intention than those with a mismatch. A portion of the AF IS workforce (AFSCs 3C0X1, 3C0X2, and 3C2X1; N = 10,133) was surveyed through an online …

Pbp 5: Characterization Of An Escherichia Coli Morphogene., David Emmet Nelson

Theses and Dissertations

The penicillin binding proteins (PBPs) are a group o f enzymes responsible for the latter stages o f peptidoglycan synthesis. Our major research objective in this study was to determine the physiological roles o f the low molecular weight (LMW) PBPs of the Gram negative bacterium Escherichia coli (E. coli). During extensive screening of a set o f mutant strains that lack different combinations of LMW PBP genes we determined that PBP 5 played a role in maintaining E. co li’s normal rod shape. However, loss of PBP 5 did not cause severe morphological alterations unless the cells were also …

Determination Of The Protein Fraction And Presence Of Antibodies In The Seminal Fluid Of Llama (Lama Glama), Francisco Flores Lopes

Theses and Dissertations

At an international level, Bolivia possesses the largest population of llamas followed by Peru. This makes our country a power, in this renewable resource, to create and generate economic development primarily for the quality of llama meat which has nutritional properties superior to other species of animals used for food. The development of the investigation of llamas in our country has not been very far-reaching. In other countries, advances have been made for quite some time, specifically in the area of reproduction, which presents problems in bringing about an intensive repopulation due to the unique characteristics of llama copulation and …

The Memory And The Legacy: The Whittlin' Whistlin' Brigade-- The Young Company, 1974-2001, Ruthanne Lay Crow

Theses and Dissertations

“The Memory and The Legacy: The Whittlin' Whistlin' Brigade–The Young Company 1974-2001,” is a history of the children's theatre of Brigham Young University. The Whittlin' Whistlin' Brigade–The Young Company acts as a training ground for graduate students working in theatre for young audiences. When directing a production for the Whittlin' Whistlin' Brigade–The Young Company, students are instructed to perform all functions required of a professional company. As the Whittlin' Whistlin' Brigade–The Young Company (WWB–TYC) spends much of its performance time on tour, those responsibilities are relegated to the student.

Developed and headed by Dr. Harold R. Oaks of Brigham Young …

Scoring Sentences Developmentally: An Analog Of Developmental Sentence Scoring, Amy Seal

Theses and Dissertations

A variety of tools have been developed to assist in the quantification and analysis of naturalistic language samples. In recent years, computer technology has been employed in language sample analysis. This study compares a new automated index, Scoring Sentences Developmentally (SSD), to two existing measures. Eighty samples from three corpora were manually analyzed using DSS and MLU and the processed by the automated software. Results show all three indices to be highly correlated, with correlations ranging from .62 to .98. The high correlations among scores support further investigation of the psychometric characteristics of the SSD software to determine its clinical …

Biochemical Components Of Seminal Plasma Of Llamas (Lama Glama) At Three Ages, Pedro Angel Delgado Callisaya

Theses and Dissertations

This study was conducted at the installation of the Rural Academic Unit-Tiahuanaco of the BCU, located in the community of Achaca, third municipal section of Ingavi province, department of La Paz. It is 57 km from the La Paz-Desaguadero international highway, at 68 degrees 42 minutes 28 seconds latitude South by 16 degrees 35 minutes 41 seconds longitude West, at an altitude of 3856 meters above sea level. The study went from October 2000 to September 2001. The study consisted of determining the concentrations of the biochemical components in llama seminal plasma at three ages. Components studied were glucose, inorganic …

Adolescent Pregnancy Attitudinal Survey, Amy Katherine Wolfe

Theses and Dissertations

A census of 53 adolescent females was conducted over a period of time beginning July 15, 2001 and ending March 5, 2002. Each subject was surveyed by using an interview with 66 items. The resources examined in this census were means of transportation and the social support structure before the female became an adolescent. The census found that 72 percent (N=53) of the adolescent females interviewed do not have a car, and 79 percent do not use public transportation. The census also found that 77 percent of the adolescent females interviewed do depend on their family/friends for transportation, and eighty-five …

A Common Characteristic Profile For Leveraging E-Rate Acquisitions In Arkansas, Drew Mashburn

Theses and Dissertations

The study investigates how four school districts in Arkansas maximized their E-rate discounts and leveraged their acquired E-rate services toward educational improvements. The purpose is to provide a common characteristic profile of school districts that leveraged their E-rate discounts toward effective technology integration. The findings contribute to an increased understanding of how schools benefit from the discounts produced by E-rate. In addition, these implications can be utilized by other school districts for an increased understanding of effective E-rate application strategies and technology integration efforts. The qualitative data provide a common characteristic profile that identifies attributes each district shared. Evidence of …

A Spatio-Temporal Data Model For Zoning, Philip J. Uhl

Theses and Dissertations

Planning departments are besieged with temporal/historical information. While for many institutions historical information can be relegated to archives, planning departments have a constant need to access and query their historical information, particularly their historical spatial information such as zoning. This can be a cumbersome process fraught with inaccuracies due to the changing organizational methods and the extended historical legacies of most municipalities. Geographic Information Systems can be a tool to provide a solution to the difficulties in querying spatio-temporal planning data. Using a data model designed specifically to facilitate the querying of historical zoning information, queries can be performed to …

Analysis Of Genetic Variability Of Quinoa (Chenopodium Quinoa Wild.) Germ Plasm Around Lake Titicaca, Milton Víctor Pinto Porcel

Theses and Dissertations

With the goal of analyzing the genetic variability of quinoa (Chenopodium quinoa Willd) germ plasm around Lake Titicaca, which is conserved in the National Bank of High Andean Grains of the PROINPA Altiplano Regional Foundation, the agromorphological behavior of 432 quinoa samples from the surrounding area (both Bolivian and Peruvian) were characterized and evaluated. This activity occurred at agricultural step 99/2000 of Belén Agricultural Station (16°1' South by 68°42' West), with the San Andrés Higher University Faculty of Agronomy, which because of its proximity to the lake represents climate conditions like those of the studied material's origin. In order to …

Fiber Performance And Quality Of Angora Rabbits (Oryctolagus Cuniculus) In Different Trims, Juan Jaime Blacutt Toledo

Theses and Dissertations

In 132 rabbits belonging to the Cunicola La Esperanza Farm of the city of El Alto in the department of La Paz, the principle physical characteristics of the angora rabbit fiber were determined in a period of 3 shearings. As such they were organized into 2 groups, clearly differentiated by their sex (female and male). The obtained fiber of the different shearings were weighed in order to determine the performance of each animal and subsequently analyzed the wool in the Experimental Station of Patacamaya, where they determined the diameter, length of hair and marrow composition. The results were subjected to …

Book Of Mormon Stories Diglot Reader On Computer, Neal S. Harmon

Theses and Dissertations

This report describes the design, development, and evaluation of a computer-based diglot reader of the Book of Mormon Stories of the Church of Jesus Christ of Latter-day Saints. Di means two and glot means language, thus a diglot reader combines two languages into one reader in order to teach a person to read in a new language. The program, which runs on both Macintosh and Windows computer platforms, contains fifteen chapters of the Book of Mormon Stories and introduces about four hundred Spanish words. This report includes a literature review on the diglot method and related materials, a description of …

Balance And Conflict: Variation In Attaining Work-Family Fit Among A Homogeneous Population, Laura C. Koch

Theses and Dissertations

The concept of work-family fit has recently emerged in the work and family literature, comparable to work-family balance in that it represents interactions between work and family, and yet distinct from balance in its sense of universal ownership and responsibility. Using Barnett's (1998) model of the work-social system interface as a framework, this study explores the relationship between and predictive factors of work-family fit and work-family balance. Data are from a survey of Brigham Young University's Marriott School of Management (MSM) graduate school alumni (n = 273). Findings indicate that fit and balance are indeed two separate constructs, with fit …

Slab-Geometry Molecular Dynamics Simulations: Development And Application To Calculation Of Activity Coefficients, Interfacial Electrochemistry, And Ion Channel Transport, Paul S. Crozier

Theses and Dissertations

Methods of slab-geometry molecular dynamics computer simulation were tested, compared, and applied to the prediction of activity coefficients, interfacial electrochemistry characterization, and ion transport through a model biological channel-membrane structure. The charged-sheets, 2-D Ewald, corrected 3-D Ewald, and corrected particle-particle-particle-mesh (P3M) methods were compared for efficiency and applicability to slab-geometry electrolyte systems with discrete water molecules. The P3M method was preferred for long-range force calculation in the problems of interest and was used throughout.

The osmotic molecular dynamics method (OMD) was applied to the prediction of liquid mixture activity coefficients for six binary systems: methanol/n-hexane, n-hexane/n-pentane, methanol/water, chloroform/acetone, n-hexane/chloroform, methanol/ …

Turbulent Times: Epic Fantasy In Adolescent Literature, Karie Eliza Crawford

Theses and Dissertations

This thesis is a development of the theories presented by Carl Jung, Joseph Campbell, and Bruno Bettelheim concerning archetypes, the anima/animus concept, the Hero Cycle, and identity development through fairy tales. I argue that there are vital rites of passage missing in Anglo-Saxon culture, and while bibliotherapy cannot replace them, it can help adolescents synthesize their experiences. The theories of Jung, Campbell, and Bettelheim demonstrate this concept by defining segments of the story and how they apply to the reader. Because of the applicability, readers, despite their age, can use the examples in the book to help reconcile their own …

Motivations And Gratifications For Selecting A Niche Television Channel: Byu Television, Diena L. Simmons

Theses and Dissertations

The growth of direct broadcast satellite television distribution to the home as a viable competitor to cable and terrestrial broadcast has fostered the availability of special interest or niche channels and therefore provided greater choice to the viewer. This study, based on uses and gratifications theory, examined the relationships among ritual and instrumental viewing motivations and satisfactions, viewer religiosity, and viewing attentiveness as they related to the selection of a niche television channel, Brigham Young University Television.
The uses and gratification approach provides an appropriate framework for studying "media consumption, the interrelated nature of television user motives, and the relationships …

Formulation Of Balanced Diets In Base Of Grains Of Left-Over Of Corn, Wheat, And Barley For Guinea Pigs (Cavia Porcellus), Egresado Hever Patricio Castro Calvache

Theses and Dissertations

The present investigation was carried out in the rural community La Rinconada, located in the canton Ibarra of the province of Imbabura. The field work was developed during 12 months. Previous activities were developed to the rehearsal like socialization of the program; training in areas of: poscosecha of grains, alfalfa cultivation and systems of growth of guinea pigs. The rehearsal lasted 70 days and it was developed in the property of three families of the community. The formulation of diets balanced based on grains of waste of corn, wheat and barley for the growth and increment of weight of guinea …

Biochemical Components In The Secretion Of The Bulb Urethral Glands Of Llama (Lama Glama) In Three Ages, Demetrio Laruta Flores

Theses and Dissertations

The present study was performed in the Zoo-Technical Engineering department of the Tiahuanaco Rural Academic Unit of the Bolivian Catholic University. The biochemical components of the secretions produced by the bulb urethral glands of male llama that were studied are glucose, inorganic phosphorus, creatinine, total proteins, albumin, total lipids, cholesterol, and triglycerides. Spectrophotometer standardized techniques were used in nine animals of three, four, and five years of age from communities of the Ingavi province. Groups comprised of three animals each were selected by age criteria. After dissecting and separating the pelvic urethra, gland secretion was obtained by finger pressure. The …