Digital Commons Network^™

Packet Error Rate Predictive Model For Sensor Radios On Fast Rotating Structures, Lei Tang

All Dissertations

Wireless sensing technologies have raised widespread interests in the applications for monitoring fast rotating or moving machinery structures in manufacturing environments. Over the past five years, a few wireless sensor systems have been implemented and proven to feasibly work under fast rotation conditions. However, few of these studies evaluated data transmission performance of the wireless communication systems. Although the manufacturing environments are known to be harsh for wireless communication, in many cases, an excellent data throughput is critical for such systems. Conventional statistical methods for studying wireless communication channels are not sufficient in this specific field.
This dissertation presents systematic …

Order Picking And Storage Using Stackable Pallets In A Warehouse, Ahmed Hassan Aly

All Dissertations

Quarter Billion dollars could be saved annually by double stacking pallets. A forklift storing 100 double stacked pallets saves 2.5 working hours versus single pallets. More than one billion pallets and cases handled between Wal-Mart distribution centers according to BEA White Paper (2006) [1], assume only 500 million were stackable pallets. This translates to 12.5 million working hours. If a forklift driver earns $20 per hour, then $250 million can be saved.
Moreover, handling double stacked pallets takes up to 46 % of total time to pick and store. This is a significant element that was ignored in literature. All …

Resistance And Dna Repair Mechanisms Under Nitrosative Stress In Mammalian And Microbial Systems, Hyun-Wook Lee

All Dissertations

Living organisms are exposed a nitrosative stress mediated by reactive nitrogen species (RNS) that can cause DNA damage and mutation. DNA base deamination is a typical damage occurred under nitrosative stress, which results in conversion of cytosine (C) to uracil (U), adenine (A) to hypoxanthine (I), and guanine (G) to xanthine (X) or oxanine (O). Base excision repair (BER) is an important pathway to remove deaminated DNA lesions in mammalian and microbial systems. My dissertation work concerns with genes and enzymes involved in resistance to nitrosative stress and DNA glycosylases in the BER pathway. In chapter one, I will briefly …

A Study Of African American Forest Landowners In South Carolina: Implications For Land Ethic And Forest Stewardship, Keenan Adams

All Dissertations

African Americans account for a significant proportion of South Carolina`s
population but reportedly own a disproportionally smaller amount of land. Research indicates that landowners who hold significant sources of sustainable wealth and power can dramatically increase their quality of life and ultimately that of their communities. Current land loss trends for African Americans are increasing at an alarming rate, which may have larger social implications for this traditionally underserved population. The remaining African American landowners are a rapidly declining group, due to an assortment of factors (e.g., age, heirs property). Understanding the experiences of the residual African American forest landowners …

Uncertainty Of Dimensional Measurments Obtained From Self-Initialized Instruments, Vincent Lee

All Dissertations

Precision dimensional measurement instruments often contain sensors that can only measure displacement of a moving body from some reference position. In order to measure the length of an object they often require a calibrated artifact to initialize their measurement sensors so that they may provide an absolute measurement instead of displacement. Instruments which can realize a null value, i.e. zero length, don't require one; however instruments which can't need to reference an object of known size. These calibration artifacts also serve as part of the chain of metrological traceability.
The group of instruments presented in this dissertation can self-initialize by …

Assortment Planning For Multiple Quality Levels Using Locational Choice, Mark Mcelreath

All Dissertations

Assortment planning is the process in which a retailer selects a product line to offer to customers and is a key determinant of a retailer's profit. We consider the assortment planning problem using a locational choice model for customer product selection and allow for both horizontal and vertical product differentiation. When the distribution of customer preference is unimodal, the optimal solutions for this problem are unknown. We propose two solution philosophies for generating product assortments. First, we introduce a metaheuristic representation for the problem and test the performance of three metaheuristic techniques. We suggest that a tabu search or genetic …

A Study Of The Statistics Of The Air/Water Interfacial Temperature Field During Mixed Convection Heat Transfer, Jie Kou

All Dissertations

Heat transfer across an air/water interface is of particular importance to limnology, oceanography and some industrial applications. The relationship between the statistics of the air/water interfacial temperature field and the interfacial heat flux is poorly understood, particularly for the mixed convection condition, which is a common heat transfer mechanism for small inland lakes. The few studies that have been conducted under mixed convection conditions have been limited to an uncontrolled surfactant condition (tap water). Therefore, in this dissertation research two sets of experiments for wind speeds from 0 to 4 m/s were conducted: controlled surfactant contaminated conditions (with oleyl alcohol) …

Development And Characterization Of Novel Sub-Coatings With Polymorphic Brookite Titania Nanoparticles: Enhanced Uv/Vis Photocatalytic Antibacterial And Anticancer Properties, Donna Weinbrenner

All Dissertations

ABSTRACT
Nosocomial and community infections and biofilm formation from bacteria has increased significantly through adaptation combined with overuse of broad spectrum antibiotics. Because the world population continues to escalate, hospitals and long-term managed care will also escalate, thereby increasing transmission of infections, lowering patients' quality of health. Another disease on the rise throughout the world is skin cancer. A treatment modality that would cause less deleterious effects on the patient would be ideal. These two seemingly different issues could be solved with one product. First an inexpensive, safe, and non-selective antimicrobial surface coating would enhance the hospital arena and a …

Production And Characterization Of Aramid Copolymer Fibers For Use In Cut Protection, Jeffrey Moreland

All Dissertations

High-performance fibers such as para-aramids are used extensively in gloves for cut protection. However, the inherent cut resistance of these fibers and the relationship between cut resistance and other material properties is not known. To better understand cut resistance at the material level, an experiment was conducted using a lab-scale wet spinning system to produce and characterize aramid copolymer fibers.
To facilitate the use of lab-scale equipment, the experiment was conducted as a four-factor split-plot response surface design. The four treatment factors studied were solvent concentration in the coagulation bath, the amount of salt in the coagulation bath, the degree …

Three Algorithms For Causal Learning, Roshan Ram Rammohan

Computer Science ETDs

The field of causal learning has grown in the past decade, establishing itself as a major focus in artificial intelligence research. Traditionally, approaches to causal learning are split into two areas. One area involves the learning of structures from observational data alone and the second, involves the methodologies of conducting and learning from experiments. In this dissertation, I investigate three different aspects of causal learning, all of which are based on the causal Bayesian network framework. Constraint based structure search algorithms that learn partially directed acyclic graphs as causal models from observational data rely on the faithfulness assumption, which is …

The Preservation Of Archaeological Records And Photographs, Kelli Bacon

Department of Anthropology: Theses and Student Research

Substantive and organized research about archaeological records and photograph preservation, especially those written by and for archaeologists, are few. Although the Society for American Archaeology has a code of ethics regarding archaeological records preservation, and the federal government has regulations regarding the care and preservation of federally owned archaeological collections, there is a lack of resources. This is detrimental to archaeology because not all archaeologists, given the maturity of the discipline, understand how important it is to preserve archaeological records and photographs. Without documents and photographs from projects, irreplaceable information is lost. This thesis adds to the existing body of …

Microsatellite Development, Population Structure And Demographic Histories For Two Species Of Amazonian Peacock Bass Cichla Temensis And Cichla Monoculus (Perciformes: Cichlidae)., Jason C. Macrander

School of Biological Sciences: Dissertations, Theses, and Student Research

The Neotropics of South America represent one of the most diverse assemblages of freshwater organisms in the world. The geologic and ecological changes that have occurred throughout the Amazon and Orinoco River basins have resulted in the two most diverse rivers in the world producing very heterogeneous environments potentially influencing current population structure of Neotropical species. To investigate specific ecological and geological events influencing populations in these regions, I explore population structure and demographic histories of two species from the genus Cichla with wide distributions among the Amazon and Orinoco. First, I describe the methods used to isolate and characterize …

Relationship Between Inflation And Stock Market Returns: Evidence From Nigeria, Omotor G. Douglason

CBN Journal of Applied Statistics (JAS)

The linkage between stock prices and inflation has been subjected to extensive research in the past decades and has arouse the interests of academics, researchers, practitioners and policy makers globally, particularly since the 1990s. The issue has been the apparent anomaly of the negative relationship between inflation and stock market returns as most studies in the industrialized economies have shown. This paper investigates this relationship using monthly and quarterly data of Nigeria for the period 1985 to 2008. The findings of this paper seem to suggest that stock market returns may provide an effective hedge against inflation in Nigeria.

Is The Stock Market A Leading Indicator Of Economic Activity In Nigeria?, Alvan E. Ikoku

CBN Journal of Applied Statistics (JAS)

In an effort to address the lacuna in leading indicator studies of African economies and Nigeria in particular, this paper examines the causal relationships among stock market prices, real GDP and the index of industrial production in Nigeria, using quarterly data from 1984Q1 to 2008Q4. Granger causality tests indicate bidirectional causality between stock prices and GDP but no causality between stock prices and industrial production or between GDP and industrial production. Stock prices and GDP are found to be cointegrated, leading to the estimation of vector error correction models. Out-of-sample forecasts constructed with AR(1), ARIMA, structural ARIMA, and VEC models …

Factors, Preventions And Correction Methods For Non-Response In Sample Surveys, Godwin Nwanzu Amahi

CBN Journal of Applied Statistics (JAS)

Missing survey data occur because of unit and item non-response. This is practically independent of the method of data collection. As a result of the bias that non-response sometimes introduces in survey estimates, identifying factors that promote it, and taking measures of prevention and correction methods are clearly necessary. The standard method to compensate for unit non-response is by weighting adjustment, while item non-responses are handled by some form of imputation. This paper reviews factors that give rise to nonresponse and the corresponding methods used for its prevention and control. It also discusses their properties.

Does An Undertaking’S Reputation Affect Its Market Power On The Relevant Market? Case Comment To The Judgment Of The Supreme Court Of 2 April 2009 – Ppks (Ref. No. Iii Sk 30/08), Rafał Stankiewicz

Yearbook of Antitrust and Regulatory Studies

No abstract provided.

Lawmakers As Lawbreakers, Ittai Bar-Siman-Tov

William & Mary Law Review

How would Congress act in a world without judicial review? Can
lawmakers be trusted to police themselves? This Article examines
Congress’s capacity and incentives to enforce upon itself “the law of
congressional lawmaking”—a largely overlooked body of law that is
completely insulated from judicial enforcement. The Article explores
the political safeguards that may motivate lawmakers to engage in
self-policing and rule-following behavior. It identifies the major
political safeguards that can be garnered from the relevant legal,
political science, political economy, and social psychology scholarship,
and evaluates each safeguard by drawing on a combination of
theoretical, empirical, and descriptive studies about …

Why Are There Tax Havens?, Adam H. Rosenzweig

William & Mary Law Review

Recently, the issue of tax havens has risen to the fore of the fiscal policy debate, with tax havens being singled out as the root cause of many of the fiscal shortfalls plaguing the governments of the world. Surprisingly, however, although there has been a fair amount of literature on why tax havens are harmful to the modern international tax regime, which countries become tax havens, and what means are available to combat tax havens, there has been less written specifically on the underlying question of why, notwithstanding all these points, tax havens exist in the first place, or why …

Rejecting Refugees: Homeland Security's Administration Of The One-Year Bar To Asylum, Philip G. Schrag, Andrew I. Schoenholtz, Jaya Ramji-Nogales, James P. Dombach

William & Mary Law Review

Since 1980, the Refugee Act has offered asylum to people who flee to the United States to escape persecution in their homeland. In 1996, however, Congress amended the law to bar asylum—regardless of the merits of the underlying claim—for any applicant who fails to apply within one year of entering the United States, unless the applicant qualifies for one of two exceptions to the rule.

In the years since the bar was established, anecdotal reports have suggested that genuine refugees, with strong claims to asylum, have been rejected solely because of the deadline. Many scholars and practitioners suspected that this …

The Chicago Experiment: Finding The Voice And Charting The Course Of Religious Education In The Church, Casey P. Griffiths

BYU Studies

In many professions, Latter-day Saints often struggle to find harmony between their religion and their career. This has been especially true in academia, in most of its diverse disciplines. These challenges were particularly fierce when the Church began developing its own corps of professional religious educators to teach and lead in the newly founded seminary and institute programs of the early twentieth century. In the early 1930s, religious educators in the Church developed a close relationship with the School of Divinity at the University of Chicago. Eleven young Latter-day Saint scholars earned advanced degrees at the school at the Church's …

A Question On My Mind: Robert Mccorkle's 1844 Letter To Joseph Smith, Hal R. Boyd, Susan E. Black

BYU Studies

Robert McCorkle (1807–1873) was one of many Americans curious about Mormonism. In 1844 he visited Nauvoo, Illinois, then headquarters of the Latter-day Saints. He hoped to obtain an audience with Joseph Smith but was able only to hear Smith speak at public meetings. When he returned to his home in Tennessee, he wrote to Smith, asking questions and describing his willingness to relocate to Nauvoo if Smith could prove that he was a true prophet. Interestingly, McCorkle wrote much of his letter in rhymed verse and hoped that Joseph Smith would reply in verse. It does not appear that Smith …

Dating The Birth Of Christ, Jeffrey R. Chadwick

BYU Studies

The Church of Jesus Christ of Latter-day Saints has taken no official position on the exact date of Christ's birth. In his 1915 classic Jesus the Christ, Elder James E. Talmage maintained that Jesus Christ was born on April 6 in the year 1 BC. Talmage was apparently the first LDS writer to propose this particular date. Nearly a century has passed since his book appeared, and in that time it has become practically axiomatic among Latter-day Saints that Jesus was born on April 6 in that year. Two other Apostles, President J. Reuben Clark and Elder Bruce R. …

A Type Analysis Of Rewrite Strategies, Azamat Mametjanov

Student Work

Rewrite strategies provide an algorithmic rewriting of terms using strategic compositions of rewrite rules. Due to the programmability of rewrites, errors are often made due to incorrect compositions of rewrites or incorrect application of rewrites to a term within a strategic rewriting program. In practical applications of strategic rewriting, testing and debugging becomes substantially time-intensive for large programs applied to large inputs derived from large term grammars. In essence, determining which rewrite in what position in a term did or did not re comes down to logging, tracing and/or di -like comparison of inputs to outputs. In this thesis, we …

The Prairie Naturalist, Vol. 42, Issue 3/4, December 2010, The Great Plains Natural Science Society

The Prairie Naturalist

EDITOR'S NOTE: REPORTING RESULTS OF DATA ANALYSIS, PREPARING SCIENTIFIC MANUSCRIPTS, AND WEBSITE DEVELOPMENT EFFORTS • Christopher N. Jacques

Current Distribution of Rare Fishes in Eastern Wyoming Prairie Streams • Christina E. Barrineau, Elizabeth A. Bear, and Anna C. Senecal

Diets of Nesting Swainson's Hawks in Relation to Land Cover in Northwestern North Dakota • Robert K. Murphy

Resource Selection of Greater Prairie-Chicken and and Sharp-Tailed Grouse Broods in Central South Dakota • Mark A. Norton, Kent C. Jensen, Anthony P. Leif, Thomas R. Kirschenmann, and Gregory A. Wolbrink

Population Characteristics of Central Stonerollers in Iowa Streams • Scott M Bisping, …

Diets Of Nesting Swainson's Hawks In Relation To Land Cover In Northwestern North Dakota, Robert K. Murphy

The Prairie Naturalist

Relationships between land use practices and types of prey used by Swainson's hawks (Buteo swainsoni) in the Northern Great Plains is of increasing interest as the quantity and quality of habitat in the region declines. I recorded 1,284 prey items at 18 Swainson' s hawk nesting areas throughout northwestern North Dakota during summer 1986-1987. After correcting for detectability biases and food needs of adults, I estimated (90% CI) 2,087-2,859 total prey individuals and 138.3-206.7 kg of prey biomass (x = 69.8 g/item) were consumed by adult and nestling Swainson's hawks during my study. Major prey (>10% overall …

The Effect Of Explicitly Differentiated Reading Instruction Groups On Eighth-Grade Students' Achievement, Behavior, And Engagement In A School Seeking To Reestablish Adequate Yearly Progress Benchmarks, Sean P. Dunphy

Student Work

The purpose of this study was to determine the effect of explicitly differentiated reading instruction groups on eighth-grade students’ achievement, behavior, and engagement in a school seeking to reestablish adequate yearly progress benchmarks. The results of this study supported student participation in explicitly differentiated reading instruction groups. Because students in High Reading Ability (n = 25), Middle Reading Ability (n = 25), and Low Reading Ability (n = 25) groups maintained average to above average achievement test scores on several measures with commensurate classroom grade performance, and appropriate behavior and engagement to support school success during eighth grade, the results …

Banuye Isfahani, Zivar Huseynov

Khazar Journal of Humanities and Social Sciences

No abstract provided.

Near Miss Reporting: An Educational Program, William Strub

Nursing Masters

In October 2007, the Medicare system contemplated future introduction of a new policy, which would no longer pay for eight preventable medical errors. With this potential new change in policy it becomes increasingly more important for health care institutions to monitor (track) medical errors and determine what measures can be taken proactively to prevent the occurrence of errors. The errors that might not be financially reimbursed under Medicare in the future include: - Sponges and/or surgical tools left in patients after surgery - Treatment of problems arising from air embolisms or incompatible blood transfusions - Treatment of bedsores developed while …

Introduction To The Special Issue: Homelessness In Canada, John R. Graham, Jeannette Waegemakers Schiff

The Journal of Sociology & Social Welfare

In February 2009, over 700 people gathered for more than three-days at 'Growing Home,' Canada's second national conference on housing and homelessness (www.nhc2009. ca) to explore causes and solutions to this urgent problem. Conference delegates included those who are experiencing or have experienced homelessness, their families, policy analysts, political activists, politicians, professionals, scholars, those in the affordable housing community, and concerned citizens generally. Over 140 academic papers and workshops were delivered by the country's leading researchers and homelessness- serving practitioners.

Perspectives Of Employed People Experiencing Homelessness Of Self And Being Homeless: Challenging Socially Constructed Perceptions And Stereotypes, Micheal L. Shier, Marion E. Jones, John R. Graham

The Journal of Sociology & Social Welfare

In a study that sought to identify the multiple factors resulting in homelessness from the perspective of 65 individuals in Calgary, Alberta, Canada who were both employed and homeless, we found that participants' perceptions of being homeless emerged as a major theme which impacts their entry to and exit from homelessness. Four sub-themes related to these perceptions were identified: (1) perceptions of self and situation; (2) impact of being homeless on self-reflection; (3) aspects of hope to consider; and (4) perspectives on having a permanent residence. Analytically, these findings help challenge present stereotypes about homelessness and usefully inform social service …