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The Eastman case studies
32
Corpus of News on the Web
21
Journal of Applied Rehabilitation Counseling
21
Music for Natural Trumpet
7
Corpus of Contemporary American English
3
Al Filo; no. 11
1
American Military Studies Series; no. 5
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American Military Studies; no. 6
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American Military Studies; no. 7
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Corpus del Español
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31
School of Visual Arts
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887 Matching Results
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Bounded Dynamic Source Routing in Mobile Ad Hoc Networks
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A mobile ad hoc network (MANET) is a collection of mobile platforms or nodes that come together to form a network capable of communicating with each other, without the help of a central controller. To avail the maximum potential of a MANET, it is of great importance to devise a routing scheme, which will optimize upon the performance of a MANET, given the high rate of random mobility of the nodes. In a MANET individual nodes perform the routing functions like route discovery, route maintenance and delivery of packets from one node to the other. Existing routing protocols flood the network with broadcasts of route discovery messages, while attempting to establish a route. This characteristic is instrumental in deteriorating the performance of a MANET, as resource overhead triggered by broadcasts is directly proportional to the size of the network. Bounded-dynamic source routing (B-DSR), is proposed to curb this multitude of superfluous broadcasts, thus enabling to reserve valuable resources like bandwidth and battery power. B-DSR establishes a bounded region in the network, only within which, transmissions of route discovery messages are processed and validated for establishing a route. All route discovery messages reaching outside of this bounded region are dropped, thus …
Date:
August 2003
Creator:
George, Glyco
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Bradstreet, Anne Dudley (1612-1672)
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Encyclopedia article on American poet Anne Dudley Bradstreet.
Date:
2006
Creator:
Martin, John
Object Type:
Article
System:
The UNT Digital Library
Brazos
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Brazos is a collection of poetry that comments on and critiques life in a small town in Texas. These poems situate the speaker both in this town and in spaces removed from the town, but the work always grapples with questions of how the speaker identifies himself via the relationship to that space. The creative portion is accompanied by a critical introduction that looks at the intersections of poetry and the lyric essay.
Date:
May 2019
Creator:
Carter, Justin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Break-up of the Confederate Trans-Mississippi Army, 1865
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Unlike other Confederate armies at the conclusion of the Civil War, General Edmund Kirby Smith's Trans-Mississippi Army disbanded, often without orders, rather than surrender formally. Despite entreaties from military and civilian leaders to fight on, for Confederate soldiers west of the Mississippi River, the surrender of armies led by Generals Robert E. Lee and Joseph E. Johnston ended the war. After a significant decline in morale and discipline throughout the spring of 1865, soldiers of the Confederate Trans-Mississippi Department chose to break-up and return home. As compensation for months of unpaid service, soldiers seized both public and private property. Civilians joined the soldiers to create disorder that swept many Texas communities until the arrival of Federal troops in late June.
Date:
May 2001
Creator:
Clampitt, Brad R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Breaking Through: A Composition for Symphony Orchestra
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Breaking Through is a single-movement composition for symphony orchestra based on a fourteen-note melody. Every harmonic and melodic figure except the bass line is derived from this source melody. The structure of the work is based on a number of musical dichotomies that work on both local and large-scale levels. The local dichotomies contrast consonance with dissonance and ambiguity with clarity (in respect to texture and rhythm). The dichotomy of two-part form versus three-part form and the dichotomy of simplicity versus complexity operate on the large scale. The unity lended by the single source melody coupled with the contrasts furnished by the aforementioned dichotomies allow Breaking Through to be both coherent and interesting.
Date:
August 2002
Creator:
Dribus, John Alexander
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Brownian Movement and Quantum Computers
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This problem in lieu of thesis is a discussion of two topics: Brownian movement and quantum computers. Brownian movement is a physical phenomenon in which the particle velocity is constantly undergoing random fluctuations. Chapters 2, 3 and 4, describe Brownian motion from three different perspectives. The next four chapters are devoted to the subject of quantum computers, which are the signal of a new era of technology and science combined together. In the first chapter I present to a reader the two topics of my problem in lieu of thesis. In the second chapter I explain the idea of Brownian motion, its interpretation as a stochastic process and I find its distribution function. The next chapter illustrates the probabilistic picture of Brownian motion, where the statistical averages over trajectories are related to the probability distribution function. Chapter 4 shows how to derive the Langevin equation, introduced in chapter 1, using a Hamiltonian picture of a bath with infinite number of harmonic oscillators. The chapter 5 explains how the idea of quantum computers was developed and how step-by-step all the puzzles for the field of quantum computers were created. The next chapter, chapter 6, discus the basic quantum unit of information …
Date:
December 2004
Creator:
Habel, Agnieszka
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Building on Trust at the New World Symphony
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This case examines the plans developed by the administration of the New World Symphony for its new home, in particular the operating cost projections for using the facility once it was built.
Date:
2017
Creator:
Anderson, Michael Alan, 1975-
Object Type:
Text
System:
The UNT Digital Library
Building on Trust at the New World Symphony: Teacher Notes
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Consists of notes to be used when teaching the case study entitled Building on Trust at the New World Symphony.
Date:
2017
Creator:
Anderson, Michael Alan, 1975-
Object Type:
Text
System:
The UNT Digital Library
Burn and Sow: The Ethical Implications of Ecological Restoration
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Ecological restoration is quickly becoming a major approach to how humans interact with the natural world. Some view restoration as another land management technique on par with conservation and preservation. Others view it as a way to make reparations for our misdeeds and to reincorporate humans into the natural world. Ideas regarding restoration from key academics and restorationists are evaluated here. Their views have set the stage for the contemporary paradigm. Values that may be attributed to restoration and received from it are evaluated. I discuss my own reservations regarding potential problems with the product and practice of restoration. What is at stake regarding the involvement of people in restoration is examined, focusing on the different impacts volunteers and paid workers have on the value of the practice and outcome of the product.
Date:
August 2005
Creator:
Mauritz, Elizabeth
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Burnout Among Student Affairs Professionals at Metropolitan Universities
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The purpose of this study was to determine the level of burnout among student affairs professionals at the 52 U.S. member institutions of the Coalition of Urban and Metropolitan Universities. Packets containing the Maslach Burnout Inventory (MBI), the Moos Work Environment Scale (WES), and a demographic survey were mailed to 371 senior student affairs administrators at the member institutions, with a completed response rate of 58.22%. The senior student affairs administrators surveyed included the chief student affairs officers and the professional staff who reported to them. The research design employed t-tests, analyses of variance, and Pearson's Product Moment correlations. The scores obtained from the MBI and WES subscales were compared overall and along 9 independent variablestitle of position, size of institution, appointment, salary, years in current position, years in profession, age, gender, and highest degree attained. Average levels of burnout were found on each of the MBI subscores. Contrary to earlier studies, women did not suffer from statistically significant higher levels of burnout than men, and burnout levels decreased with age and years in the profession for both sexes. Lower scores on the MBI depersonalization subscale were found in employees in mid-career and in professionals from smaller schools. Emotional exhaustion …
Date:
August 2001
Creator:
Murphy, Lynda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Burying the War Hatchet: Spanish-Comanche Relations in Colonial Texas, 1743-1821
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This dissertation provides a history of Spanish-Comanche relations during the era of Spanish Texas. The study is based on research in archival documents, some newly discovered. Chapter 1 presents an overview of events that brought both people to the land that Spaniards named Texas. The remaining chapters provide a detailed account of Spanish-Comanche interaction from first contact until the end of Spanish rule in 1821. Although it is generally written that Spaniards first met Comanches at San Antonio de Béxar in 1743, a careful examination of Spanish documents indicates that Spaniards heard rumors of Comanches in Texas in the 1740s, but their first meeting did not occur until the early 1750s. From that first encounter until the close of the Spanish era, Spanish authorities instituted a number of different policies in their efforts to coexist peacefully with the Comanche nation. The author explores each of those policies, how the Comanches reacted to those policies, and the impact of that diplomacy on both cultures. Spaniards and Comanches negotiated a peace treaty in 1785, and that treaty remained in effect, with varying degrees of success, for the duration of Spanish rule. Leaders on both sides were committed to maintaining that peace, although …
Date:
May 2002
Creator:
Lipscomb, Carol A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Callus Development and Organogenesis in Cultured Explants of Cowpea (Vigna unguiculata (L.) Walp
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Cowpea, Vigna unguiculata (L.) Walp is an excellent source of protein, vitamins and minerals and a major food crop many parts of Africa. Optimal production levels are hampered by insect pests and diseases. Biotechnological techniques such as tissue culture and genetic engineering can aid in the development of varieties with resistance to insect pests and diseases. The objective of this study was to investigate conditions necessary for the development of a reproducible tissue culture system that can be applied to regenerate transformed cells from culture. The in vitro manipulation of cowpea using Murashige and Skoog (MS) medium, auxins and cytokinins resulted in the formation of callus and rhizogenesis. Calli that were formed were separated into six classes based on color and texture. Yellowish friable callus, yellowish compact, soft yellowish callus and green and white were composed of largely vacuolated cells and were non-regenerative. Friable green callus was the most prevalent callus type and could form of roots in some hormone combinations. Green spots were formed on hard compact green callus. The green spots became nodular, forming root primordia and ultimately giving rise to roots. None of the six calli types gave rise to the formation of shoots. Embryogenic callus was …
Date:
December 2004
Creator:
Omwenga, George Isanda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Carbon Nanotube/Microwave Interactions and Applications to Hydrogen Fuel Cells.
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One of the leading problems that will be carried into the 21st century is that of alternative fuels to get our planet away from the consumption of fossil fuels. There has been a growing interest in the use of nanotechnology to somehow aid in this progression. There are several unanswered questions in how to do this. It is known that carbon nanotubes will store hydrogen but it is unclear how to increase that storage capacity and how to remove this hydrogen fuel once stored. This document offers some answers to these questions. It is possible to implant more hydrogen in a nanotube sample using a technique of ion implantation at energy levels ~50keV and below. This, accompanied with the rapid removal of that stored hydrogen through the application of a microwave field, proves to be one promising avenue to solve these two unanswered questions.
Date:
May 2004
Creator:
Imholt, Timothy James
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Carbon Nanotubes and Molybdenum Disulfide Protected Electrodes for High Performance Lithium-Sulfur Battery Applications
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Lithium-sulfur (Li-S) batteries are faced with practical drawbacks of poor cycle life and low charge efficiency which hinder their advancements. Those drawbacks are primarily caused by the intrinsic issues of the cathodes (sulfur) and the anodes (Li metal). In attempt to resolve the issues found on the cathodes, this work discusses the method to prepare a binder-free three-dimensional carbon nanotubes-sulfur (3D CNTs-S) composite cathode by a facile and a scalable approach. Here, the 3D structure of CNTs serves as a conducting network to accommodate high loading amounts of active sulfur material. The efficient electron pathway and the short Li ions (Li+) diffusion length provided by the 3D CNTs offset the insulating properties of sulfur. As a result, high areal and specific capacities of 8.8 mAh cm−2 and 1068 mAh g−1, respectively, with the sulfur loading of 8.33 mg cm−2 are demonstrated; furthermore, the cells operated at a current density of 1.4 mA cm−2 (0.1 C) for up to 150 cycles. To address the issues existing on the anode part of Li-S batteries, this work also covers the novel approach to protect a Li metal anode with a thin layer of two-dimensional molybdenum disulfide (MoS2). With the protective layer of MoS2 …
Date:
August 2019
Creator:
Cha, Eunho
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Caregiving in Later Life: A Contextual Approach to the Provision of Care
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Guided by the life course perspective, this study examined the frequency of caregiving provided by older adults to kin and non-kin. A telephone survey produced a random sample of adults 60 years of age and older, which was predominantly White, with higher income and education levels (n = 278). Bivariate and multivariate analyses tested the impact of demographic characteristics and other variables, conceptualized as physical, human, and social capital, on the frequency of caregiving. Gender, age, health, limitations, education, income, household composition, social contact, and reciprocity were analyzed in multinomial logistic regressions. Caregiving was defined as care provided to sick or disabled persons, with frequency of providing care classified as often, sometimes, and never. The majority of older adults provided at least some care to others over a one-year period, with almost one-third doing so often and only one-quarter never doing so. Most provided care to more than one person, with over one-quarter providing care to multiple friends only. Age failed to predict caregiving involvement when physical and social capital variables were considered. The odds of often providing care are higher for women, although gender did not predict those who never provided care. Having at least some college only significantly …
Date:
August 2003
Creator:
Worthen, Laura T.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Case Study of Leftist Terrorism in Turkey
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Change in government has characterized the development of most nations. Sometimes this change has been marked by continued evolution, in a peaceful attempt to move forward. Other times, change has been fraught with violent revolution and terrorism. This process has been the subject of much debate by political scientists and economic philosophers. Today, Turkey suffers from continued threats to its government through violent acts of terrorism conducted by various groups, expressing ideologies of leftist and rightist organizations, as well as ethnic and religious extremists. This thesis examines DHKP/C as the primary leftist revolutionary group effecting Turkey, exploring its historical background in Europe and the Middle East, as well as its philosophical link to Marxism. Further, this treatise discusses the implication of revolution and terrorism expressed by DHKP/C; and explores innovative and peaceful solutions, strategies, and techniques to be used by the police forces of Turkey in combating this group
Date:
August 2001
Creator:
Yayla, Ahmet
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
CEDAR: The Life and Music of Cedar Walton
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Grammy Award–winning pianist, bandleader, and composer Cedar Walton (1934–2013) is a major figure in jazz, associated with a variety of styles from bebop to funk and famous for composing several standards. Born and raised in Dallas, Walton studied music in Denver, where he jammed with musicians such as Charlie Parker and John Coltrane. In 1955, Walton moved to New York, immediately gaining recognition from notable musicians and nightclub proprietors. When Walton returned to the U.S. after serving abroad in the Army, he joined Benny Golson and Art Farmer’s Jazztet. Later, he became both pianist and arranger for Art Blakey’s Jazz Messengers. Next, he worked as part of Prestige Records’s house rhythm section, recording with numerous greats and releasing his own albums. One hallmark of Walton’s impact is his numerous long-term collaborations with giants such as trombonist Curtis Fuller and drummer Billy Higgins. By the end of his career, Walton’s discography, as both band member and bandleader, included many dozens of vaunted recordings with some of the most notable jazz musicians of the 1960s through the first decade of the twenty-first century. Ben Markley conducted more than seventy-five interviews with friends and family members, musicians who played with or were otherwise …
Date:
May 2023
Creator:
Ben Markley
Object Type:
Book
System:
The UNT Digital Library
Ceramide Biosynthesis and NEET Proteins Impact Development, Function, and Maintenance of the Caenorhabditis elegans Germline
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I used the C. elegans genetic model to examine the role of ceramide biosynthesis (sphingolipid pathway) and iron regulation and found that each process impacts germline development and function. Using a sphingolipid specific antibody mAb15B4, I found that sphingolipids are associated with germ granules (P granules) within C. elegans and zebrafish; thus, suggesting conservation of macromolecules associated with germ granules. Phenotype analysis of ceramide biosynthesis mutants in C. elegans revealed that this pathway is essential for normal germline function in the aging adult hermaphrodite; specifically, precocious germline senescence was observed. Furthermore, I found that disruption of ceramide biosynthesis, via the hyl-2 deletion mutation, negatively impacts mAb15B4 localization at the P granules. Through genetic suppression analysis, I determined that insulin signaling and lipid biosynthesis can modulate the mAb15B4 localization to P granules. Additional, phenotype analysis showed that ceramide biosynthesis dysfunction decreased fecundity, and led to germline structure defects and uterine tumors. Through suppression analysis, I determined that modulation of the insulin signaling pathway suppressed the precocious germline senescence due to ceramide biosynthesis dysfunction. Since the presence of uterine tumors is associated with reproductive senescence I concluded that ceramide biosynthesis has a role in germline maintenance in the aging of the germline …
Date:
August 2019
Creator:
King, Skylar Dawn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cesarean Section Delivery and Exclusive Breastfeeding in Pakistan: Emerging Challenges
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This research examined two interrelated issues relevant to maternal and neonatal health in Pakistan, namely, the rising rates of C-section delivery and low rates of exclusive breastfeeding. By using the Andersen's health behavioral model to frame two empirical studies, the data from the Pakistan Demographic and Health Survey (PDHS) 2012-13 was used. The first empirical study examined the correlation between place of delivery and the odds of cesarean section in Pakistan. Not all Pakistani women have an equal chance of delivering at a health facility where C-section delivery takes place; therefore, the study modeled mode of delivery as a two-step process. In the first step, place of delivery was a function of medical indications and various sociodemographic and community factors. Women who delivered at a health facility were included in the second step, where C-section was a function of medical indications and type of facility (private, public). It is found that women who delivered at a private health facility were more likely to have a C-section, even after controlling for the effects of medical/clinical factors, which is concerning. Findings suggest that the private maternal health sector in Pakistan may be over-medicalizing childbirth. The second study examined this paradox of low …
Date:
August 2019
Creator:
Nazir, Saman
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Challenges Encountered During Law Enforcement Investigations of Terrorist Use of Information Technology.
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The late 20th and early 21st centuries have seen a phenomenal growth in society's use of information technology. Criminals, including terrorists and terrorist organizations, have also adopted information technologies. Information technologies are used to enhance the efficiency, productivity, and effectiveness of terrorist activities and offenses. Investigating terrorist use of information technologies creates a number of challenges for law enforcement officials. While some of the challenges are encountered during conventional criminal investigations, terrorist investigations also present unique challenges. Through content and typological analysis, this study examined open source information to identify, categorize and propose a model of these challenges. Four primary categories were identified: technology, methodology, legal, and administration and human resources challenges.
Date:
May 2005
Creator:
Morgan, Deanne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Changing Perspectives: Black-Jewish Relations in Houston during the Civil Rights Era
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Changing Perspectives charts the pivotal period in Houston’s history when Jewish and Black leadership eventually came together to work for positive change. This is a story of two communities, both of which struggled to claim the rights and privileges they desired. Previous scholars of Southern Jewish history have argued that Black-Jewish relations did not exist in the South. However, during the 1930s to the 1980s, Jews and Blacks in Houston interacted in diverse and oftentimes surprising ways. The distance between Houston’s Jews and Blacks diminished after changing demographics, the end of segregation, city redistricting, and the emergence of Black political power. Allison Schottenstein shows that Black-Jewish relations did exist during the Long Civil Rights Movement in Houston.
Date:
March 2021
Creator:
Schottenstein, Allison E.
Object Type:
Book
System:
The UNT Digital Library
Changing Privacy Concerns in the Internet Era.
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Privacy has always been a respected value regardless of national borders, cultural differences, and time in every society throughout history. This study focuses on the unprecedented changes in the traditional forms of privacy and consequent concerns with regard to invasion of privacy along with the recent emergence and wide use of the Internet. Government intrusion into private domains through the Internet is examined as a major concern. Privacy invasions by Web marketers, hacker threats against privacy, and employer invasion of employee privacy at the workplace are discussed respectively. Then a set of possible solutions to solve the current problems and alleviate the concerns in this field is offered. Legal remedies that need to be performed by the government are presented as the initial solution. Then encryption is introduced as a strong technical method that may be helpful. Finally, a set of individual measures emphasized as complementary practical necessities. Nevertheless, this study indicates that technology will keep making further changes in the form and concerns of privacy that possibly may outdate these findings in the near future, however, privacy itself will always remain as a cherished social value as it has always been so far.
Date:
August 2002
Creator:
Demir, Irfan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characteristics of Successful Texas Schools Which Predict Components of an Adequate Education.
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The purpose of this study was to identify high performing school districts in Texas and to determine if there are different characteristics leading to the provision of an adequate education in high performing districts as compared to low performing districts. It specifically sought to determine which characteristics contributed most to an adequate education and used data from the Texas Academic Excellence Indicator System (AEIS) which chronicled scores on the Texas Assessment of Academic Skills (TAAS). The population for this study consisted of all 2001-2002 Texas public school districts with the exception of charter schools, special-purpose statutory districts, and state-administered districts, which resulted in using data from 1027 Texas school districts. Descriptive discriminant analysis was chosen as the method for statistical analysis. Data were obtained from the Texas Education Agency (TEA). Adequate and inadequate districts were analyzed according to eight variables. They were (1) taxable value per pupil, (2) the percentage of special education students, (3) the percentage of students coded as bilingual and ESL, (4) pupil-teacher ratio, (5) the size of the district, (6) the percentage of economically disadvantaged students in the district, (7) the district community type, such as rural or suburban, and (8) the total operating expenditures per …
Date:
December 2005
Creator:
Ryan, Robin S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characterization, Analysis, and Optimization of Rotary Displacer Stirling Engines
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Use of this item is restricted to the UNT Community
This work focuses on an innovative Rotary Displacer SE (RDSE) configuration for Stirling engines (SEs). RDSE features rotary displacers instead of reciprocating displacers (found in conventional SE configurations), as well as combined compression and expansion spaces. Guided by the research question "can RDSE as a novel configuration achieve a higher efficiency compared to conventional SE configurations at comparable operating conditions?", the goal of this study is to characterize, analyze, and optimize RDSE which is pursued in three technical stages. It is observed the RDSE prototype has an optimum phase angle of > 90° and thermal efficiency of 15.5% corresponding to 75.2% of the ideal (Carnot) efficiency at the source and sink temperatures of 98.6° C and 22.1° C, respectively. Initial results indicate that 125° phase angle provides more power than that of the theoretically optimum 90° phase angle. The results also show comparable B_n and significantly higher W_n values (0.047 and 0.465, respectively) compared to earlier studies, and suggest the RDSE could potentially be a competitive alternative to other SE configurations. Furthermore, due to lack of a regenerator, the non-ideal effects calculated in the analytical approach have insignificant impact (less than 0.03 kPa in 100 kPa). The clearance volume in …
Date:
December 2019
Creator:
Bagheri, Amirhossein
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library