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Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States
Macroinvertebrates associated with the aquatic plant, water stargrass (Heteranthera dubia), were sampled from 12 waterbodies in four regions of the United States from June to August 2005. Taxa richness, evenness, and diversity were lowest in the Lower Midwest (LMW) region, and higher in Northern sites, especially the Upper Midwest (UMW), and Northeast (NE). While relative abundance varied from site to site and region to region, utilization of the plant by functional groups remained fairly constant. Collector-gatherers consistently comprised the largest portion of invertebrates sampled. The shredder/ herbivore functional group comprised an average of 17 % of total groups. Through an exhaustive literature review, it was found that shredder/ herbivores of water stargrass have not been reported in the literature. Because of this, the herbivore group was analyzed separately and consisted of 2,383 specimens representing 23 species. The most common groups were Rhopalosiphum sp., Nectopsyche spp. and chironomids. No differences were found in herbivore diversity or evenness between sampling regions, but species richness was significantly different.
Date:
May 2010
Creator:
Harms, Nathan Earl
System:
The UNT Digital Library
California-ko Ostatuak: a History of California's Basque Hotels
The history of California's Basque boardinghouses, or ostatuak, is the subject of this dissertation. To date, scholarly literature on ethnic boardinghouses is minimal and even less has been written on the Basque "hotels" of the American West. As a result, conclusions in this study rely upon interviews, census records, local directories, early maps, and newspapers. The first Basque boardinghouses in the United States appeared in California in the decade following the gold rush and tended to be outposts along travel routes used by Basque miners and sheepmen. As more Basques migrated to the United States, clusters of ostatuak sprang up in communities where Basque colonies had formed, particularly in Los Angeles and San Francisco during the late nineteenth century. In the years between 1890 and 1940, the ostatuak reached their zenith as Basques spread throughout the state and took their boardinghouses with them. This study outlines the earliest appearances of the Basque ostatuak, charts their expansion, and describes their present state of demise. The role of the ostatuak within Basque-American culture and a description of how they operated is another important aspect of this dissertation. Information from interviews supports the claim that the ostatua was the most important social institution …
Date:
May 1988
Creator:
Echeverría, Jerónima, 1946-
System:
The UNT Digital Library
Multiple Regression Equations to Estimate Mean Nutrient Concentrations in Streams of North Central Texas from Landsat Derived Land Use
Nutrients are of critical concern in water quality assessment. The development of empirical models to estimate mean nutrient concentrations, based on satellite derived land use, could aid water resource managers. Models using land use acreages outperformed those using percentages, and discrete urban land uses were superior to lumped urban. Regressions of the combinations of two, three and four of the eight possible land use variables were investigated. Sensitivity analyses, with one stream deleted each series, identified robust combinations of variables at each level. Although uncertainty exists regarding the final regression coefficients, five of the six actual measured nitrate and total phosphorus mean concentrations were within the 95 percent confidence limits.
Date:
May 1994
Creator:
Kerr, Barry Douglas
System:
The UNT Digital Library
The impact of climate and flooding on tree ring growth of Fraxinus pennsylvanica in north-central Texas.
Tree cores of Fraxinus pennsylvanica were used in a dendrochronological analysis investigating the species' responses to climate and flooding. The objective was to develop a model that incorporates the effects of precipitation, temperature, and flooding on radial growth in this species in north-central Texas. The trees exhibited strong climatic signals. The study clearly shows that all three factors have significant impacts on tree ring growth both prior to and during growth; however, the nature and extent of these impacts are highly dependent on what time of year they occur. The large temporal variations in growth responses emphasize the importance of considering the timing of environmental events when studying tree growth responses.
Date:
December 2009
Creator:
Komperod, Mari
System:
The UNT Digital Library
London, Ankara, and Geneva: Anglo-Turkish Relations, The Establishment of the Turkish Borders, and the League of Nations, 1919-1939
Access:
Use of this item is restricted to the UNT Community
This dissertation asserts the British primacy in the deliberations of the League of Nations Council between the two world wars of the twentieth century. It maintains that it was British imperial policy rather than any other consideration that ultimately carried the day in these deliberations. Given, as examples of this paramountcy, are the discussions around the finalization of the borders of the new republic of Turkey, which was created following the collapse of the Ottoman Empire at the end of the First World War. These discussions focused on three areas, the Mosul Vilayet or the Turco-Iraqi frontier, the Maritza Delta, or the Turco-Greek frontier, and the Sanjak of Alexandretta or the Turco-Syrian frontier.
Date:
August 2002
Creator:
Stillwell, Stephen J.
System:
The UNT Digital Library
Holomorphology and Drumming Behavior of Western Nearctic Isoperla (Plecoptera)
The holomorphology of ll life stages of 20 western Nearctic Isoperla and one Cascadoperla was studied over the 3-year period 1975-1978. One monotypicgenus new to science, Cascadoperla, is described, and Cascadoperla tricture (Hoppe) designated as the type species. The nymph, adult male and female, and ova are described and illustrated.
Date:
December 1978
Creator:
Szczytko, Stanley W.
System:
The UNT Digital Library
Attitudes and Actions of the First Six Presidents of the United States Concerning Higher Education
Higher education has always occupied an important place in this nation's concerns. This study was undertaken in an attempt to determine how the Founding Fathers, especially the nation's first six presidents, regarded the subject of higher education. The study was limited to these six men because they were charged with inaugurating the new government and because these six men were all participants in the drafting and ratifying of the Constitution. Findings for this study came from the personal and private papers of the first six presidents, government documents, and the press. A comparison of the findings indicates that these men shared many beliefs while disagreeing on some aspects of higher education.
Date:
December 1981
Creator:
Rushing, Dorothy M. (Dorothy Marie)
System:
The UNT Digital Library
"Goodness and Mercy"
The stories in this collection represent an increasingly transcultural world by exploring the intersection of cultures and identities in border spaces, particularly the Mexican-American border. Characters, regardless of ethnicity, experience the effects of migration and deportation in schools, hometowns, relationships, and elsewhere. The collection as a whole focuses on the issues and themes found in Mexican-American literature, such as loss, separation, and the search for identity.
Date:
May 2016
Creator:
Craggett, Courtney, 1986-
System:
The UNT Digital Library
God's Perfect Timing
When I was thirty-three years old, I discovered I was an adoptee. In this memoir of secrecy and love, betrayal and redemption, I reflect on my early experiences as a doted-on only child firmly rooted in the abundant love of my adoptive family, my later struggles with depression and obsessive-compulsive disorder, my marriage to a fellow-adoptee, my discovery of my own adoption and the subsequent reunion with my birth family, my navigation through the thrills and tensions of newly complicated family dynamics, and my witness to God's perfect timing through it all.
Date:
August 2009
Creator:
Rizzo, Steven
System:
The UNT Digital Library
Federal Occupation and Administration of Texas, 1865-1870
The scope of this study is limited to Federal military occupation during the five years from 1865 to 1870. Only the interior counties, where a dense Negro population required the exercise of political and social responsibilities, will be considered in detail. A line from Wise through Bosque, Travis, Wilson, Karnes, and Goliad Counties to the coastal town of Corpus Christi would roughly separate interior from frontier posts.
Date:
August 1970
Creator:
Shook, Robert W. (Robert Walter)
System:
The UNT Digital Library
A Comparison of Knowledge and Attitudes between Directors of Athletics and Head Trainers in the Southwest and Southland Conferences Regarding HIV-transmission Issues in Athletics
The purpose of this study was to investigate and compare knowledge and attitudes of directors of athletics and head trainers in the Southwest (Division 1A) and the Southland (Division 1AA) Conferences concerning HIV/AIDS issues related to transmission, prevention, and protection within college athletics programs. The results of this qualitative study provided descriptive data from university administrators within the athletics setting who are responsible for providing adequate student athlete health care services from developed and implemented administrative policies that directly or indirectly affect a student athlete's physiological and psychological well-being.
Date:
December 1995
Creator:
Whiteley, Harold L. (Harold Lee)
System:
The UNT Digital Library
Biocompatible Hybrid Nanomaterials Involving Polymers and Hydrogels Interfaced with Phosphorescent Complexes and Toxin-Free Metallic Nanoparticles for Biomedical Applications
The major topics discussed are all relevant to interfacing brightly phosphorescent and non-luminescent coinage metal complexes of [Ag(I) and Au(I)] with biopolymers and thermoresponsive gels for making hybrid nanomaterials with an explanation on syntheses, characterization and their significance in biomedical fields. Experimental results and ongoing work on determining outreaching consequences of these hybrid nanomaterials for various biomedical applications like cancer therapy, bio-imaging and antibacterial abilities are described. In vitro and in vivo studies have been performed on majority of the discussed hybrid nanomaterials and determined that the cytotoxicity or antibacterial activity are comparatively superior when compared to analogues in literature. Consequential differences are noticed in photoluminescence enhancement from hybrid phosphorescent hydrogels, phosphorescent complex ability to physically crosslink, Au(I) sulfides tendency to form NIR (near-infrared) absorbing AuNPs compared to any similar work in literature. Syntheses of these hybrid nanomaterials has been thoroughly investigated and it is determined that either metallic nanoparticles syntheses or syntheses of phosphorescent hydrogels can be carried in single step without involving any hazardous reducing agents or crosslinkers or stabilizers that are commonly employed during multiple step syntheses protocols for syntheses of similar materials in literature. These astounding results that have been discovered within studies of hybrid nanomaterials …
Date:
August 2011
Creator:
Marpu, Sreekar B.
System:
The UNT Digital Library
The Contribution of Mira Behn and Sarala Behn to Social and Environmental Transformation in the Indian State of Uttarakhand
The influence of Mohandas K. Gandhi on social and environmental movements in post-colonial India has been widely acknowledged. Yet, the contributions of two European associates of Gandhi, Madeleine Slade and Catherine Mary Heilemann, better known in India as Mira Behn and Sarala Behn, have not received the due attention of the academic community. This dissertation is an examination of the philosophy and social activism of Mira Behn and Sarala Behn and their roles in the evolution of Gandhian philosophy of socioeconomic reconstruction and environmental conservation in the present Indian state of Uttarakhand. Instead of just being acolytes of Gandhi, I argue that these women developed ideas and practices that drew upon from an extensive intellectual terrain that cannot be limited to Gandhi’s work. I delineate the directions in which Gandhian thought and experiments in rural development work evolved through the lives, activism, and written contributions of these two women. Particularly, I examine their influence on social and environmental movements, such as the Chipko and the Anti-Tehri Dam movements, and their roles in promoting grassroots social development and environmental sustainability in the mountain communities of Uttarakhand. Mira Behn and Sarala Behn’s integrative philosophical worldviews present epistemological, sociopolitical, ethical, and metaphysical principles …
Date:
May 2014
Creator:
Mallik, Bidisha
System:
The UNT Digital Library
The Rise and Fall of the Greenback Party in Texas: Economic Change and Political Dissent in the Post-Civil War Era
Access:
Use of this item is restricted to the UNT Community
In 1873, a financial crisis plunged the United States into a deep economic depression that exacerbated a number of post-war economic issues. By the late 1870s, political dissent centered primarily on financial issues merged into the Greenback movement, which represented a loose coalition of reformers calling for economic relief based on the expanded use of greenbacks (paper currency issued by the United States Treasury during the Civil War). The Greenback Party emerged as a direct response to federal financial policies, but in Texas, it also provided a broad political platform for those opposed to the policies of "Redeemer/Bourbon" Democrats. The Greenback Party of Texas brought together a wide range of dissenters, including disgruntled Democrats, ousted Republicans, and many different economic and social reformers. From 1876, when the first Greenback clubs appeared in Texas, to the Greenback Party's virtual disappearance after the election of 1884, the Texas Greenbackers reached across boundaries of section, race, class, and sometimes gender; brought together farmers, workers, and professionals; Southerners and Northerners, white and black; former Confederates and former Unionists; native-born Americans and immigrants; and received sizable support from multiple counties in the northern, eastern, and central part of the state. In spite of its short …
Date:
December 2019
Creator:
Sinclair, Cameron L.
System:
The UNT Digital Library
Frontier Defense in Texas: 1861-1865
The Texas Ranger tradition of over twenty-five years of frontier defense influenced the methods by which Texans provided for frontier defense, 1861-1865. The elements that guarded the Texas frontier during the war combined organizational policies that characterized previous Texas military experience and held the frontier together in marked contrast to its rapid collapse at the Confederacy's end. The first attempt to guard the Indian frontier during the Civil War was by the Texas Mounted Rifles, a regiment patterned after the Rangers, who replaced the United States troops forced out of the state by the Confederates. By the spring of 1862 the Frontier Regiment, a unit funded at state expense, replaced the Texas Mounted Rifles and assumed responsibility for frontier defense during 1862 and 1863. By mid-1863 the question of frontier defense for Texas was not so clearly defined as in the war's early days. Then, the Indian threat was the only responsibility, but the magnitude of Civil War widened the scope of frontier protection. From late 1863 until the war's end, frontier defense went hand in hand with protecting frontier Texans from a foe as deadly as Indians—themselves. The massed bands of deserters, Union sympathizers, and criminals that accumulated on …
Date:
December 1987
Creator:
Smith, David Paul, 1949-
System:
The UNT Digital Library
The Way of Change and Surprise: A Strategic Cultural Analysis of China's South China Sea Policies from the 1930s to 2010s
This dissertation aims to discover the hidden pattern and rationales behind China's South China Sea policies over the last one hundred years from the perspective of Chinese strategic culture. A historical-cultural approach is a powerful tool in uncovering deeper understandings of the Chinese way of policy making and strategy on issues such as the South China Sea. The key research questions include: first, is there any historical legitimacy in China's sovereignty claim over the South China Sea islands? Second, do Beijing's South China Sea policies in various periods have any regularity or pattern, and how did they serve China's grand strategies at the time? By utilizing extensive Chinese and English primary sources and other sources, this study conducts a comprehensive and in-depth analysis of the South China Sea issue from the framework of Chinese strategic culture.
Date:
May 2023
Creator:
Zhong, Wenrui
System:
The UNT Digital Library
Genetics Lecture and Laboratory Syllabus for a Junior-Level Course
The following is a complete syllabus for a college level genetics course. The syllabus contains lecture outlines and notes for each chapter, along with a list of transparencies needed. The quizzes and exams are prepared and placed at the beginning of the syllabus. The beginning of the course will consist of a lecture to introduce the students to the basics of genetics, followed by many applications of genetics. The process of cell division will be mastered by the students, as well as Mendelian genetics, quantitative genetics, chromosome mapping, and inheritance. The replication, synthesis, and organization of DNA are also discussed within the lectures. The final topics that will be covered using this syllabus are genetics of cancer and immunology and population genetics. These topics are essential for a detailed genetics course. The syllabus is written in great detail, and will require a full semester to be completed. The book used in association with this syllabus is Essentials of Genetics by William S. Klug and Michael R. Cummings.
Date:
August 1999
Creator:
Harper, Kasey
System:
The UNT Digital Library
An Empirical Examination of Certain Aspects of Auditor Changes in NYSE, AMEX, and Selected OTC Companies
The purpose of this thesis was to analyze a number of auditor change and other peripheral issues from two related perspectives. Empirical data were gathered from publicly available Forms 8-K and 10-K to first assess whether meaningful differences existed between NYSE, AMEX, and OTC registrants regarding disclosures required in those documents. Secondly, the data were analyzed to determine whether differences existed with respect to the accounting firms (Big Eight or non-Big Eight) involved in the auditor changes. In most of the tests designed to achieve these purposes, statistically defensible results were obtained using the nonparametric chi-square test for significance of observed differences and the McNemar test for significance of changes, at the .05 level.
Date:
May 1981
Creator:
McConnell, Donald K., Jr.
System:
The UNT Digital Library
State Participation in Funding Capital Projects and Improvements in Texas Public Schools
The impact of four basic capital project funding models for state participation was determined for the school districts in Texas. A review of the historical background for funding of capital projects and improvements by states was followed by a review of the historical background of state support for funding capital projects in the State of Texas. Additionally, the current funding models and methods of determining need were reviewed for all of the states. This historical review revealed that facility funding, like aid for maintenance and operation, has evolved with all the states at different stages.
Date:
December 1993
Creator:
Hawkins, Jimmy R. (Jimmy Ray)
System:
The UNT Digital Library