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Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces (open access)

Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces

The south-central United States serves as an important biogeographical link and dispersal corridor between Nearctic and Neotropical elements of western hemisphere odonate faunas. Its species are reasonably well known because of substantial collections, but there has been no concerted effort to document the extent of biodiversity and possible geographic affinities of dragonflies and damselflies of this region. The recent discoveries of Argia leonorae Garrison, Gomphus gonzalezi Dunkle and Erpetogomphus heterodon Garrison from southern and western Texas and northern Mexico suggest that Odonata species remain to be discovered in this area, particularly from far south Texas and northern Mexico. I have documented a total of 12,515 records of Odonata found in 408 counties within the south-central U.S. A total of 73 species of damselflies and 160 species of dragonflies was revealed in the region. The 233 (197 in Texas) Odonata species are distributed among 10 families and 66 genera. Illustrated family, generic, and species-level keys are provided. Since the beginning of this work in the Fall of 1993, one species has been added each to the Louisiana and Oklahoma faunas, and 12 species have been added, previously unreported from Texas, including four new to the U.S. The area of highest Odonata …
Date: May 1999
Creator: Abbott, John C.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Megadrought and Megadeath in 16th Century Mexico (open access)

Megadrought and Megadeath in 16th Century Mexico

The native population collapse in 16th century Mexico was a demographic catastrophe with one of the highest death rates in history. Recently developed tree-ring evidence has allowed the levels of precipitation to be reconstructed for north central Mexico, adding to the growing body of epidemiologic evidence and indicating that the 1545 and 1576 epidemics of cocoliztli (Nahuatl for "pest") were indigenous hemorrhagic fevers transmitted by rodent hosts and aggravated by extreme drought conditions.
Date: 2002
Creator: Acuna-Soto, Rodolfo; Stahle, David W.; Cleaveland, Malcolm K. & Therrell, Matthew D.
Object Type: Text
System: The UNT Digital Library
The Position of Texas in the Relations Between the United States and Mexico from 1876 to 1910 (open access)

The Position of Texas in the Relations Between the United States and Mexico from 1876 to 1910

"The purpose of this study was to show the position of Texas in the relations between the United States and Mexico from 1876 to 1910. With this thought in mind, the general problem has been to link the two countries through Texas. The Texas border relations between the United States and Mexico during this period were interesting because they showed the continued success of the efforts of the past years in building up better principles of settlement. " --leaf 129
Date: June 1942
Creator: Alexander, Gladys M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Hexagon, Volume 94, Number 4, Winter 2003 (open access)

The Hexagon, Volume 94, Number 4, Winter 2003

Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date: Winter 2003
Creator: Alpha Chi Sigma
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
The Hexagon, Volume 95, Number 3, Fall 2004 (open access)

The Hexagon, Volume 95, Number 3, Fall 2004

Quarterly publication of the Alpha Chi Sigma chemistry fraternity containing articles related to chemistry research and the activities of the organization, including local chapters and groups.
Date: Autumn 2004
Creator: Alpha Chi Sigma
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
State of the Climate in 2009 (open access)

State of the Climate in 2009

This report describes observations of precipitation, temperature, and other climatology metrics from different global regions.
Date: June 2010
Creator: Andt, D. S.; Baringer, M. O.; Johnson, M. R.; Alexander, L. V.; Diamond, H. J.; Fogt, R. L. et al.
Object Type: Text
System: The UNT Digital Library
Exploring Teachers’ Constructivist Beliefs Using Talis 2013: Approaches to Training and Development (open access)

Exploring Teachers’ Constructivist Beliefs Using Talis 2013: Approaches to Training and Development

The changing landscape of demographics, technology, and diversity in the learning environment is challenging schools around the world to rethink their approaches to the implementation of high-quality teaching practices. Classroom practices are becoming more complex because educators have to ensure that their students are well-equipped with 21st century skills (e.g., Darling-Hammond, 2010; Dede, 2010; Griffin, McGaw, & Care, 2012). Educators, curriculum developers, and school administrators need to be more than experts in pedagogy. They are now required to keep up with current ideas, innovative instructional practices, and the results of a variety of educational reform efforts. Believing that teachers’ beliefs are the most important psychological construct with regard to instructional practices (Pajares, 1992) and that teachers’ beliefs are related to their choice of classroom practices and, ultimately, the students’ performance (Bybee, Taylor, Gardner, Van Scotter, Powell, Westbrook, & Landes, 2006; Staub & Stern, 2002), the author of this study utilizes the international data set of the Teaching and Learning International Study (TALIS) 2013 to examine the associations between teachers’ constructivist beliefs, their self-efficacy beliefs, professional activities, and the school principals’ instructional leadership as related to lower secondary school teachers and principals in South Korea, Finland, and Mexico. These three countries …
Date: August 2015
Creator: Angnakoon, Putthachat
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Guide for the Performance of Trumpet Mariachi Music in Schools (open access)

A Guide for the Performance of Trumpet Mariachi Music in Schools

The purpose of this study is to provide a guide for the instruction of a trumpet mariachi performance ensemble in a music curriculum. The fulfillment of this purpose is dependent upon the data supplied in answer to the sub problems: (1) What socio-cultural information provides authentic trumpet mariachi music; (2) What trumpet mariachi literature illustrates the repertoire and style; (3) What instructional source materials may be developed such that Mexican American and non-Mexican American instructors build a competency in repertoire and style; (4) How could this guide be evaluated in its functional design for a music curriculum? The data collected for use in this study has been presented in three major categories: (1) the history and milieu in which the trumpet, mariachi crystalized; (2) the repertoire--its history and function in Mexican society and the transcriptions of types demonstrating the musical structure; and (3) the technical information relative to the instruction of the particular mariachi instruments. An evaluative instrument has been supplied in an attempt to establish the validity of the information and examples provided in this practicum. The validity of the research seems to rest on its authenticity and its serviceability. The findings of this study are stated as assertions …
Date: August 1979
Creator: Bennett, James G., fl. 1979-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Cement and Artificial Stone Sculpture of Mexico (open access)

Cement and Artificial Stone Sculpture of Mexico

The intention of this study is not to present the technique as a new one in the realm of sculpture, but rather to investigate the various ways in which cement is being employed in the sculptural form and to point out its prominent use as well as the reasons for its popularity in Mexico.
Date: June 1966
Creator: Bowling, Henry E.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Polk and the Mexican War: a Study in Motives and War Policies (open access)

Polk and the Mexican War: a Study in Motives and War Policies

This paper discusses James K. Polk and his stance on the annexation of Texas as well as the different war plans and policies he originated during the Mexican War.
Date: August 1945
Creator: Bradford, Willard R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Expropriation of American Oil Interests and its Effect on United States-Mexican Relations since 1938 (open access)

Expropriation of American Oil Interests and its Effect on United States-Mexican Relations since 1938

This thesis discusses the seizure of all foreign owned oil property by the Mexican government in 1938 and the historical events leading up to the seizure.
Date: 1947
Creator: Buell, Erwin C.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
"Para qué recorder": Preserving the Legacy of María Grever through Selected Vocal Compositions for Study and Performance (open access)

"Para qué recorder": Preserving the Legacy of María Grever through Selected Vocal Compositions for Study and Performance

María Grever (1885-1951) overcame racism and gender bias during a pivotal era in American music history to become the first commercially successful Mexican female composer and more specifically, a pioneer of popular music during the first half of the 20th century. Though named the "Madonna of song," her legacy is largely overshadowed by other compositional giants of the era, such as the Gershwin brothers, Cole Porter, and Irving Berlin. Grever's music is sophisticated, heartfelt, and worthy of attention. Her colorful, genuine music adds distinctiveness and variety to recital programs. Grever's songs offer a high level of musical integrity and socio-cultural value. Incorporating her compositions into a singer's vocal repertoire is an excellent way to broaden the scope of styles and languages while maintaining the highest standards of musical study. The following document considers the importance of performing and studying Grever's music by analyzing nine songs representing three compositional periods. I evaluated the songs considering pedagogical benefit, performance value, and significance to her overall oeuvre.
Date: May 2019
Creator: Canchola, Amy
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Colonial Ironwork in Guanajuato, Mexico (open access)

Colonial Ironwork in Guanajuato, Mexico

This study purposes to serve as an introduction to the Colonial ironwork to be found in Guanajuato City.
Date: 1947
Creator: Christie, Mildred Virginia
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Genic Differentiation and Evolution in the Ground Squirrel Subgenus Ictidomys (Spermophilus) (open access)

Genic Differentiation and Evolution in the Ground Squirrel Subgenus Ictidomys (Spermophilus)

The genetic structure of 26 natural populations of three species (S. tridecemlineatus, S. mexicanus, and S. spilosoma) of the Ictidomys subgenus of ground squirrels was analyzed using chromosomal and electrophoretic techniques. Chromosomal variation was not observed in S. mexicanus, and only slight karyotypic variation was found in the other two species. Chromosomal evidence indicated hybridization between S. tridecemlineatus and S. mexicanus, placing these species within the classical definition of semispecies. Analysis of electrophoretic variation at 29 genetic loci indicated close genetic relationships between these species. Evolution in Ictidomys appears to be linked with Pleistocene events, and speciation appears to have occurred within the last 155,000 years.
Date: December 1975
Creator: Cothran, E. Gus, 1951-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
"Goodness and Mercy" (open access)

"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-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Selective Lineage of Mexican Bassoonists (open access)

A Selective Lineage of Mexican Bassoonists

Spanish settlers brought the precursor to the bassoon, el bajón, to Mexico in the late sixteenth century. Documentation of the bassoon was intermittently from the sixteenth century on, the current playing traditions were not established until the second half of the twentieth century. Bassoon education in Mexico flourished in the 1970's because several bassoonists became expatriates, and chose to live and work in Mexico for the entirety of their careers. Two major pedagogues, Lazar Stoychev and Jerzy Lemiszka paved the way for the current Mexican bassoon community. This dissertation presents a selective lineage of bassoonists who have held positions in major Mexican orchestras and universities since the mid-twentieth century. The purpose of this study is to recognize the contributions these players and teachers have given to the bassoon world. In recent years, Mexican bassoonists have commissioned hundreds of works for the bassoon and this significant achievement has placed the Mexican bassoon community in an upward trajectory. To place these players in proper historical context, a brief history of classical music institutions in Mexico since the sixteenth century is given. This dissertation documents the history and pedagogy of recent bassoonists in Mexico via a cohesive family tree.
Date: August 2017
Creator: Cruz, Jorge, Jr.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
American Artillery in the Mexican War 1846-1847 (open access)

American Artillery in the Mexican War 1846-1847

This thesis presents a history of the United States' war with Mexico with a focus on the maturing of the United States artillery on the battlefields of Mexico.
Date: May 1969
Creator: Dillon, Lester R.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Analysis of Micro Enterprise Clusters in Developing Countries:  A Case Study of Toluca, Mexico. (open access)

Analysis of Micro Enterprise Clusters in Developing Countries: A Case Study of Toluca, Mexico.

Businesses cluster to achieve agglomeration benefits. However, research in developing countries suggests that the economic environment limits small business’ propensity to benefit from agglomerations. The study examines the location, networking patterns, formal structures and owner characteristics of 1256 micro businesses from ten industries and thirteen sample areas in Toluca, Mexico. First, the thesis analyses whether clustering has a positive impact on the success rates of the surveyed enterprises, e.g. higher sales per employee. On an industry scale only Retail benefits from agglomerations economies. However, results of the neighborhood data show that specific areas benefit from urbanization economies. Overall, the study finds that businesses located within agglomerations, have higher levels of formalization, networking and professional training, hence constituting a more sophisticated base for economic development. Conclusions can be drawn for development policies and programs, arguing for a more differentiated approach of small business development depending on business location and cluster characteristics.
Date: August 2011
Creator: Drauschke, Kristin
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Mexican Connection: Confederate and Union Diplomacy on the Rio Grande, 1861-1865 (open access)

The Mexican Connection: Confederate and Union Diplomacy on the Rio Grande, 1861-1865

This study examines the efforts of the Union and Confederate diplomatic agents to influence the events along the Rio Grande during the Civil War. The paper compares the successful accomplishments of Confederate agent Jose Quintero to the hindered maneuverings of the Union representatives, Leonard Pierce and M. M. Kimuey. Utilizing microfilmed sources from State Department records and Confederate despatches, the paper relates the steps Quintero took to secure the Confederate-Mexico border trade, obtain favorable responses from the various ruling parties in northern Mexico, and hamper the Union agents' attempts to quell the border trade.
Date: May 1978
Creator: Fielder, Bruce M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Pottery and Tiles of Guanajuato, Mexico (open access)

Pottery and Tiles of Guanajuato, Mexico

This paper is the result of a study made in Guanajuato, Mexico, in the summer of 1945. It is an attempt to set forth the development of the methods used in making pottery and tiles in this region -- to trace the methods, forms, and motifs from the pre-Conquest period through the Colonial and contemporary periods, to find what changes have come about in the art of making pottery and tiles, and to discover the causes of these changes.
Date: 1946
Creator: Fincher, Frances Merle
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Music Theory in Mexico from 1776 To 1866: A Study of Four Treatises by Native Authors (open access)

Music Theory in Mexico from 1776 To 1866: A Study of Four Treatises by Native Authors

This investigation traces the history and development of music theory in Mexico from the date of the first Mexican treatise available (1776) to the early second half of the nineteenth century (1866). This period of ninety years represents an era of special importance in the development of music theory in Mexico. It was during this time that the old modal system was finally abandoned in favor of the new tonal system and that Mexican authors began to pen music treatises which could be favorably compared with the imported European treatises which were the only authoritative source of instruction for serious musicians in Mexico.
Date: August 1986
Creator: Flores, Carlos A. (Carlos Arturo)
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Joaquín de Arredondo in Texas and Northeastern New Spain, 1811-1821 (open access)

Joaquín de Arredondo in Texas and Northeastern New Spain, 1811-1821

Joaquín de Arredondo was the most powerful and influential person in northeastern New Spain from 1811 to 1821. His rise to prominence began in 1811 when the Spanish military officer and a small royalist army suppressed Miguel Hidalgo’s revolution in the province of Nuevo Santander. This prompted the Spanish government to promote Arredondo to Commandant General of the Eastern Internal Provinces, making him the foremost civil and military authority in northeastern New Spain. Arredondo’s tenure as commandant general proved difficult, as he had to deal with insurgents, invaders from the United States, hostile Indians, pirates, and smugglers. Because warfare in Europe siphoned much needed military and financial support, and disagreements with New Spain’s leadership resulted in reductions of the commandant general’s authority, Arredondo confronted these threats with little assistance from the Spanish government. In spite of these obstacles, he maintained royalist control of New Spain from 1811 to 1821, and, in doing so, changed the course of Texas, Mexican, and United States history. In 1813, he defeated insurgents and American invaders at the Battle of Medina, and from 1817 to 1820, his forces stopped Xavier Mina’s attempt to bring independence to New Spain, prevented French exiles from establishing a colony …
Date: August 2014
Creator: Folsom, Bradley, 1979-
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Las Obras de Carlos Fuentes (open access)

Las Obras de Carlos Fuentes

This thesis considers the novels of Carlos Fuentes from a thematic point of view, as well as looking at the place of the writer in Mexican narrative tradition. It also presents a brief history of the Mexican novel.
Date: January 1966
Creator: Garcia, Lino, Jr.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Influence of Interorganizational Trust, Individualism and Collectivism, and Superordinate Goal of JIT/TQM on Interorganizational Cooperation: An Exploratory Analysis of Institutions in Mexico (open access)

The Influence of Interorganizational Trust, Individualism and Collectivism, and Superordinate Goal of JIT/TQM on Interorganizational Cooperation: An Exploratory Analysis of Institutions in Mexico

Since their introduction to the United States from Japan in the 1980s, inter-organizational cooperation practices between buyers and suppliers have provided lower costs, shorter development and production cycles, and higher levels of quality and productivity. Many studies of interorganizational cooperation have relied on transaction cost economicsframeworks,which ignore cultural differences. Few studies have analyzed inter-organizational cooperation in Mexico, a less-developed country (LDC) with a cultural and industrial environment differentfromthe U.S. This study is concerned with the influence of interorganizational trust, individualism and collectivism (indcol), and the superordinate goal ofjust-in-time/total quality management (JIT/TQM) on inter-organizational cooperation.
Date: December 1998
Creator: Glaser-Segura, Daniel A. (Daniel Armand)
Object Type: Thesis or Dissertation
System: The UNT Digital Library