Partner
Collection
Texas Digital Newspaper Program
1,178
The Greensheet
936
UNT Theses and Dissertations
419
UNT Scholarly Works
92
Texas Borderlands Newspaper Collection
52
Hudspeth County Area Newspaper Collection
52
Texas Jewish Herald /Jewish Herald /Jewish Herald-Voice
52
The Suburbia News
52
Tocker Foundation Grant
52
Texas Jewish Post
37
22 More
Serial/Series Title
The Greensheet
936
Hudspeth County Herald and Dell Valley Review
52
Suburbia News
52
The Jewish Herald-Voice
52
The Texas Jewish Post
37
Yorktown News-View
27
Journal of Near-Death Studies
23
International Association of Panoramic Photographers e-Monitor
12
South Texas Catholic
11
JNDS, Volume 29, Number 4
10
25 More
Degree Department
Libraries
48
Department of Psychology
45
College of Music
42
Digital Projects Unit
35
Department of History
26
Department of Counseling and Higher Education
24
Department of Teacher Education and Administration
23
Department of Biological Sciences
20
Department of Chemistry
17
Department of English
16
69 More
Degree Discipline
Degree Level
States
Year
Month
Language
Style and Satisfaction: An Examination of the Relationship Between Instructor Communicator Style and Instructor Job Satisfaction
The study sample was composed of 110 teaching faculty at Vernon College, a multi-campus northwest Texas community college in Wichita Falls, TX. Participants completed two surveys: the Socio-communicative Orientation Scale (SCO) and the Teacher Satisfaction Scale (SAT). Demographic information was collected as well for generalizability purposes. As measured by the SCO, communicator style is a multi-dimensional concept including aspects of assertiveness and responsiveness communication behaviors; the assertiveness and responsiveness dimensions acted as independent variables. Instructor job satisfaction acted as the independent variable. The strength of the independent variables was measured separately in ratio to job satisfaction. Regression analysis results demonstrated that the assertiveness dimension of instructor communicator style is not a statistically significant contributor to instructor satisfaction. However, the responsiveness dimension can explain 12% of the variance in instructor job satisfaction. Beta weight and structure coefficient analysis confirmed the initial regression results for both independent variables. Further, commonality analysis clarified that the two independent variables within the study are in fact orthogonal in nature, meaning that they do not overlap and are not correlated. Hence, the responsiveness dimension of instructor communicator style is directly related to relationship building in an educational context and may be considered in professional development activities. …
Date:
May 2011
Creator:
Kirk, Don DeWayne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evocations from Childhood: Stylistic Influences and Musical Quotations in Claude Debussy's Children's Corner and La Boîte À Joujoux
Claude Debussy is considered one of the most influential figures of the late 19th century and early 20th centuries. Among the various works that he wrote for the piano, Children's Corner and La Boîte à joujoux distinguish themselves as being evocative of childhood. However, compared to more substantial works like Pelléas et Mélisande or La Mer, his children's piano music has been underrated and seldom performed. Children's Corner and La Boîte à joujoux were influenced by a series of eclectic sources, including jazz, novel "views" from Russian composers, and traditional musical elements such as folk songs and Eastern music. The study examines several stylistic parallels found in these two pieces and is followed by a discussion of Debussy's use of musical quotations and allusions, important elements used by the composer to achieve what could be dubbed as a unique "children's wonderland."
Date:
May 2011
Creator:
Ko, Hsing-Yin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Mind's Eye and Other Stories
This collection contains a preface entitled "Of Other Worlds" and the following short stories: "The Mind's Eye," "Waking," "The Conquest of the World," "Persephone," and "Extradition." This creative thesis includes a blend of science fiction and literary realism short stories, which are collectively concerned with questions of time, narration, and the use of language. As well, the preface discusses science fiction theory, narrative strategies such as the use of the first person perspective, and the author's theory of composition.
Date:
May 2011
Creator:
Ledbetter, Kelly
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Using Logic and Spatial Cybergames to Improve Student Success Rates in Lower-Division Chemistry Courses
A study was conducted to investigate the relationships between cybergaming treatment groups and the control group (N = 99: ncontrol = 8; nlogic = 29; nspatial = 30; ncombination = 32) with success in the organic chemistry I course as measured by achievement over a 10-week period. The treatment groups included logic training, spatial training, and combination logic-spatial training. Students' ability was measured by pre/post exams using the Group Assessment of Logical Thinking (GALT) to measure logic ability, Purdue Visualizations of Rotations (ROT) test to measure spatial skills, and the General-Organic-Biochemistry (GOB) Exam to measure content attainment. Finally, students' responses about participation in this experience were evaluated using open- and closed-ended questions on a self-developed survey. A second study was conducted to evaluate the relationship between the cybergaming treatment and control groups (N = 88: nexperimental = 27; ncontrol = 61) with success in the general chemistry I course as measured by achievement and final course averages and grades. The cybergaming treatment group underwent intensive combination logic-spatial training for 10 weeks. Students' progress was measured using three pre/post instruments: Group Assessment of Logical Thinking (GALT) measured logic ability, Purdue Visualizations of Rotations (ROT) Test measured spatial skills, and the California …
Date:
May 2011
Creator:
Manrique, Carissa Janice
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Corpus-Based Approach to Gerundial and Infinitival Complementation in Spanish ESL Writing
This paper examines the use of infinitival and gerundial constructions by intermediate Spanish learners. The use of those two patterns creates problems for second language learners at intermediate and advanced levels. However, there are only few studies on their second language acquisition, and fewer focus on Spanish learners. This study tries to resolve this and to this end, I retrieved all hits of the two constructions from the Spanish component of the International Learner Corpus of English (SP-ICLE). I run a distinctive collexeme analysis (DCA) to identify the verbs that are associated with either pattern. The results are discussed at three different levels: (i) the identification of verbs that Spanish learners associate with each construction; (ii) a systematic comparison with previous studies on native speakers to show possible similarities/discrepancies; and (iii) a comparison of the results with findings on German learners to discuss possible effects of language similarity and transfer.
Date:
May 2011
Creator:
Martinez-Garcia, Maria Teresa
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Federal Judiciary and Establishment Clause Jurisprudence: Application of the Lemon Test since Mitchell v. Helms
The issue of religion and its place in society has been a topic of controversy and debate since long before the creation of our constitutional republic. The relationship between religion and government has witnessed some of its most intense conflicts when the governmental entity in question involves public education. As our country moved into the 20th century, legal challenges in the field of public education began to emerge calling into question the constitutionality of various policies and practices at both the state and local levels. This dissertation examined the legal methodology that was initially developed and then subsequently modified as the judicial branch has interpreted how the Establishment Clause delineates the relationship between religion and public education. Because the United States Supreme Court has not overturned its decision in Lemon v. Kurtzman, the tri-partite test it established still remains the law of the land. Subsequent decisions by the Court leading up to their ruling in Mitchell v. Helms, however, have continued to modify the judiciary's approach toward the use of the Lemon test in Establishment Clause jurisprudence. This research analyzed the decisions of the various federal courts subsequent to the ruling issued in Mitchell to discern both the present position …
Date:
May 2011
Creator:
Sanders, Russell Scott
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"The Long Goodbye": Uncertainty Management in Alzheimer's Caregivers
Caregivers for individuals diagnosed with Alzheimer's disease (AD) shoulder a remarkably complex burden as compared to other caregivers of elderly individuals. For long distance caregivers, geographical separation further compounds the problems experienced by AD caregivers, as they are isolated from family members and support networks. Both on-site and long-distance AD caregivers experience uncertainty; the findings from this study illustrate how AD caregivers manage the uncertainty of the disease and primary care, as well as how uncertainty differs between on-site and long-distance caregivers. AD caregiver (N = 13) interviews were transcribed and qualitatively analyzed using uncertainty management theory as a thematic lens. The analysis revealed that AD caregivers experience overwhelming feelings of burden, guilt, and doubt; however, these feelings manifest differently depending on caregiver type. The findings of this study demonstrate that sources for obtaining information regarding AD and caregiving were useful for on-site caregivers; however, the sources did not account for the needs of long-distance caregivers or the psychosocial needs of on-site caregivers. Furthermore, AD caregivers did not seek support or information about AD and caregiving from health care professionals. Implications for future research regarding long-distance and on-site AD caregiving are discussed.
Date:
May 2011
Creator:
Shaunfield, Sara
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Techniques for Improving Uniformity in Direct Mapped Caches
Directly mapped caches are an attractive option for processor designers as they combine fast lookup times with reduced complexity and area. However, directly-mapped caches are prone to higher miss-rates as there are no candidates for replacement on a cache miss, hence data residing in a cache set would have to be evicted to the next level cache. Another issue that inhibits cache performance is the non-uniformity of accesses exhibited by most applications: some sets are under-utilized while others receive the majority of accesses. This implies that increasing the size of caches may not lead to proportionally improved cache hit rates. Several solutions that address cache non-uniformity have been proposed in the literature. These techniques have been proposed over the past decade and each proposal independently claims the benefit of reduced conflict misses. However, because the published results use different benchmarks and different experimental setups, (there is no established frame of reference for comparing these results) it is not easy to compare them. In this work we report a side-by-side comparison of these techniques. Finally, we propose and Adaptive-Partitioned cache for multi-threaded applications. This design limits inter-thread thrashing while dynamically reducing traffic to heavily accessed sets.
Date:
May 2011
Creator:
Nwachukwu, Izuchukwu Udochi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Design for Social Presence and Exploring Its Mediating Effect in Mobile Data Communication Services
The mobility, flexibility, convenience, and ubiquity of mobile data services (MDS) have contributed to their enormous growth and popularity with users. MDS allow users to communicate through mobile texting (mTexting), mobile Instant Messaging (mIM), multimedia messaging services (MMS), and email. A unique feature of MDS that enhances its popularity among its users is the awareness capability, which is revolutionizing the way MDS is being used to communicate today. It allows potential communication partners to socialize through these technologies. This dissertation explored the relationship between user experience, perceived richness, perceived social presence and satisfaction with MDS. A research model for examining the antecedent conditions that influence social presence, richness, social interaction and satisfaction with MDS was developed. Partial least square analysis showed that user experience influenced both social presence and richness. Also supported was the relationship between richness, social presence and satisfaction with MDS. Social presence mediated the relationship between user experience and richness. However, only one dimension of interactivity influenced social presence.
Date:
May 2011
Creator:
Ogara, Solomon Omondi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Expansion of a Retail Chain: An Analysis of Wal-Mart Locations in the United States
Retail geography is an expanding field that is becoming increasingly important within academia, the business environment, and the national and global economy. The focus of this study is to provide insight and additional understanding of the site selection processes employed by Wal-Mart in the United States. The research studies Wal-Mart from a national perspective and investigates the patterns of retail store expansion across the United States from 1990 to 2005. The study employs the use of a continuous Poisson model to check for significant clustering, and a single and multiple correlation analysis to identify the types of relationships that exist between retail stores and location. The results of the study make apparent several distinct patterns of retail store dispersion within the United States between the years 1990 to 2005.
Date:
May 2011
Creator:
Ostrander, Anthony P.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Adagio of Mahler's Ninth Symphony: A Schenkerian Analysis and Examination of the Farewell Story
Mahler's Ninth Symphony, since its premier in 1912, has sparked much debate about its programmatic meaning. This thesis provides an in-depth analysis of the Adagio and an examination of the controversy of the farewell story. In the process of the analysis I have compared my findings to some of the important authors in Mahler's field such as Vera Micznik, Henry-Louis de La Grange, and Christopher Orlo Lewis. Some of the conclusions are that a closer investigation of the music is necessary and that the programmatic reading of the farewell story can be appropriate.
Date:
May 2011
Creator:
Patterson, Jason, 1982-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
War by Other Means - the Development of United States Army Military Government Doctrine in the World Wars
Occupation operations are some of the most resource and planning intensive military undertakings in modern combat. The United States Army has a long tradition of conducting military government operations, stretching back to the Revolutionary War. Yet the emergence of military government operational doctrine was a relatively new development for the United States Army. During the World Wars, the Army reluctantly embraced civil administration responsibilities as a pragmatic reaction to the realities of total war. In the face of opposition from the Roosevelt administration, the United States Army established an enduring doctrine for military government in the crucible of the European Theater of Operations.
Date:
May 2011
Creator:
Musick, David C.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Patton's Iron Cavalry - The Impact of the Mechanized Cavalry on the U.S. Third Army
The American military experience in the European Theater of Operations during the Second World War is one of the most heavily documented topics in modern historiography. However, within this plethora of scholarship, very little has been written on the contributions of the United States Cavalry to this era. The six mechanized cavalry groups assigned to the Third Army served in a variety of roles, conducting screens, counter-reconnaissance, as well as a number of other associated security missions for their parent corps and the Army. Although unheralded, these groups made substantial and war-altering impacts for the Third Army.
Date:
May 2011
Creator:
Nance, William Stuart
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Critical Analysis of Ph.D. and Ed.D. Dissertation Abstracts Published during 2009 and 2010
The completion of the dissertation certifies the completion of the academic rigors of the doctoral degree and verifies the candidate's achievement of independent scholarship. The Carnegie Project on the Education Doctorate was a 5-year effort to define the distinct purpose of the Ph.D. and Ed.D. in education. The Carnegie Project sought to ensure that the academy moved forward on two fronts: rethinking and reclaiming the research doctorate, the Ph.D., and developing the distinct professional practice doctorate, the Ed.D. The project determined that there has been a blurring of the distinctions between these two degrees over the past half-century which invites examination of their purpose and their content. Given this, this qualitative study examined Ph.D. and Ed.D. dissertation abstracts to determine if abstracts differ in terms of these selected factors: research design, data analysis, use of theoretical frameworks, subjects or participants, the setting or context of the study, and to compare Ph.D. and Ed.D. abstracts to the abstract format recommended in literature to explore if there are differences in the abstracts and to determine to what extent abstracts in either degree are congruent with the recommendations. This study used a digital dissertation database to study 100 Ed.D. dissertation abstracts and 100 …
Date:
May 2011
Creator:
Newsom, Thomas W.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Reproductive and Growth Responses of the Fathead Minnow (Pimephales Promelas) and Japanese Medaka (Oryzias Latipes) to the Synthetic Progestin, Norethindrone
A commonly prescribed contraceptive, the synthetic progestin norethindrone (NET) inhibits ovulation in humans. However, ecotoxicological data are lacking. Preliminary tests produced an LC50 for NET of > 1.0 mg/L (96-hour, fathead minnow (FHM) and medaka) and a NOEC of 242.0 µg/L, a LOEC of 485.0 µg/L (7-day, growth for FHM and medaka). Reproductive testing revealed a LOEC for fecundity of 24.1 ng/L (21 days, medaka). Further testing confirmed the LOEC of 24.1 ng/L while defining a NOEC of 4.7 ng/L (28 days, medaka). Effect of NET in medaka life-cycle exposure at concentrations exceeding 4.7 ng/L was evident. Few females were present in the 24.7 ng/L exposure concentration, with none in the 104.6 ng/L. Egg production was significantly reduced at concentrations exceeding 4.7 ng/L. Additionally, weight, condition factor and somatic indices were significantly different in males exposed to concentrations exceeding 4.7 ng/L. For fecundity and sexual differentiation; the NOEC was 4.7 ng/L, the LOEC 24.6 ng/L; growth and somatic indices, the NOEC was more appropriately 0.9 ng/L, with effect evident at 4.7 ng/L. Sexual differentiation of the F1 population was similar to the F0. A defining result of this test was development of exceptionally large ovaries in NET- exposed female medaka, …
Date:
May 2011
Creator:
Paulos, Peter M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Assessment of Feigning with the Trauma Symptom Inventory: Development and Validation of new Validity Scales with Severely Traumatized Patients
Currently, only the TSI assesses complex traumatic reactions and patient response styles. However, its feigning scale, ATR, uses a flawed detection strategy and is potentially confounded by experiences of complex PTSD. As a consequence, clinicians using the TSI to evaluate severely traumatized patients have no useful method for discriminating genuine and feigned responding. Several detection strategies have demonstrated utility within evaluations of feigned trauma including the assessment of rare symptoms, symptom combinations, symptom selectivity, and symptom severity. The current study created scales on the TSI according to these strategies using a development sample of 107 severely traumatized patients. Validation of all TSI feigning scales was then performed with a second independent sample of 71 severely traumatized patients using a mixed simulation design. Results found support for each scale's convergent validity with SIRS primary scales (M rs = .52) and discriminant validity with measures of defensiveness on the SIRS (M rs = -.07) and TSI (M rs = -.19). Each scale also produced expectedly mild to moderate relationships with SADS-C clinical scales (M rs = .32) and the SCID-IV PTSD module (M rs = -.02). Support for their criterion validity was only moderate (M ds = .69) when comparing the scores …
Date:
May 2011
Creator:
Payne, Joshua W.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Stage and Scream: The Influence of Traditional Japanese Theater, Culture, and Aesthetics on Japan's Cinema of the Fantastic
Although widely viewed in the West, Japanese films are often misunderstood, as they are built on cultural, theatrical, and aesthetic traditions entirely foreign to Western audiences. Particularly in regards to Japan's "fantastic" cinema - including giant monster pictures, ghost stories, and "J-Horror" films - what is often perceived as "cheap" or "cheesy" is merely an expression of these unique cultural roots. By observing and exploring such cultural artifacts as kabuki, noh, and bunraku - the traditional theatrical forms of Japan - long-standing literary traditions, deeply embedded philosophical beliefs, and even more recent developments such as the controversial dance form butoh, these films, including Gojira (1954), Daimajin (1966), Kwaidan (1964), Onibaba (1964), Testuo the Iron Man (1989), and Ju-On (2002), can be placed in their proper perspective, leading to a reevaluation of their worth not merely as commercial products, but as uniquely Japanese expressions of that society's unique place in world culture.
Date:
May 2011
Creator:
Petty, John E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Epidemiological Evaluation of Pain Among String Instrumentalists
Pain and performance anxiety (PA) are common problems among string players. Therefore, the purpose of this study was to assess and compare PA and prevalence rates and locations of pain in violinists, violists, cellists, and bassists. Subjects completed a questionnaire that included sections on demographics, musical background, practice habits, musculoskeletal problems, non-musculoskeletal problems, and PA. Anthropometric data were gathered on all 115 subjects. Results show that there are differences in both pain and PA across instrument groups. Violinists reported the highest number of pain sites, followed by violists, bassists, and cellists. The left shoulder was the most-often reported pain site, followed by the neck and right shoulder. Aching was the most cited term selected to describe pain. Several anthropometric indices were significantly correlated with pain, notably right thumb to index finger span in both cellists and bassists. In all instrument groups, at least one pain site was significantly correlated with one of four PA questions. Results warrant the development of intervention strategies and further study of the relationship between pain and performance anxiety.
Date:
May 2011
Creator:
Meidell, Katrin Liza
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
It's a Wonderful Business: The Art of Production Sound
It's a Wonderful Business: The Art of Production Sound is a documentary film that offers an inside look at what it takes to record the dialog of actors and diegetic sounds on a movie set. This is the job of the production sound crew, in charge of recording the voices of some of the most talented and prominent performers in the motion picture industry. The documentary features interviews with former and current production sound mixers and boom operators from some of the most acclaimed films in the history of cinema. The film also explores the personal demands, the working conditions, and the sacrifices sound crews have endured to succeed in the always challenging, but very exciting, world of film making.
Date:
May 2011
Creator:
Milano, Omar
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Cattle Capitol: Misrepresented Environments, Nineteenth Century Symbols of Power, and the Construction of the Texas State House, 1879-1888
State officials, between 1882 and 1888, exchanged three million acres of Texas Panhandle property for construction of the monumental Capitol that continues to house Texas government today. The project and the land went to a Chicago syndicate led by men influential in business and politics. The red granite Austin State House is a recognizable symbol of Texas around the world. So too, the massive tract given in exchange for the building, what became the "fabulous" XIT Ranch, also has come to symbolize the height of the nineteenth century cattle industry. That eastern and foreign capital dominated the cattle business during this period is lesser known, absorbed by the mythology built around the Texas cattle-trail period - all but at an end in 1885. This study examines the interaction of Illinois Republicans and Texas Democrats in their actions and efforts to create what have become two of Texas's most treasured symbols.
Date:
May 2011
Creator:
Miller, Michael M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Relation of Witnessing Interparental Violence to PTSD and Complex PTSD
Complex posttraumatic stress disorder (CPTSD) integrates symptoms common to victims of "complex" traumas, like childhood physical or sexual abuse, with the diagnostic criteria of posttraumatic stress disorder (PTSD). It was hypothesized that a history of witnessing interparental violence would be related to adulthood CPTSD symptoms. Results from hierarchical multiple regressions with 287 college students showed that witnessing interparental violence and experiencing child physical abuse predicted higher levels of CPTSD, PTSD, and depression symptoms. After controlling for child abuse, witnessing interparental violence predicted higher levels of traditional PTSD symptoms, but it did not predict an increase in overall CPTSD symptom severity or depression. Results suggest that the traditional PTSD construct, rather than CPTSD, best accounts for the symptoms of those who witnessed interparental violence in childhood.
Date:
May 2011
Creator:
Miller, Susannah
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluating and Blending Multimedia Mobile Applications into Technical Training
This study in the aerospace ground equipment (AGE) apprentice course at Sheppard Air Force Base, Texas, examined the use of mobile digital devices to determine which device leveraged the best results and was most compatible with military technical training requirements. The sample consisted of 160 students who attended the course between January and June, 2010. Three devices loaded with course materials were issued to the students, who used the devices in the classroom and were encouraged to use the devices to enhance their study time after class. Quantitative data were obtained by comparing block test scores to determine if any device produced a significant change in student learning. Qualitative data were collected from surveys administered to instructors and students to measure which device instructors and students found easiest to understand and use, and student satisfaction with the device. An analysis of variance (ANOVA) revealed a statistically significant difference (p < .05) in the block test mean scores between groups using mobile devices and the students in the control group that had no device. Post hoc comparisons on each block showed that there was a statistically significant difference between students using the smartphone and students using the other devices, but no …
Date:
May 2011
Creator:
Moore, Billy R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Elementary Math Achievement in Texas: What is Working?
Elementary math teachers (76) from selected Texas schools that included Grade 5 responded to an online self-report survey with respect to school-level factors that may be associated with student math achievement. Questions on the survey focused on school-level factors related to math, campus leadership, integration of technology in the math classroom, teacher expectations, utilization of student data in decision-making and professional development. The schools included in the study were rated as Acceptable or Exemplary schools by the Texas Education Agency for three-consecutive years (2007-2010). Logistic regression techniques were used to analyze the data and 11 questions out of 45 were analyzed to determine the odds ratio. Factors that were correlated with being an Exemplary campus were teacher certification routes, not benchmarking student progress, implementation of response to intervention (RTI), classroom management focus (equally divided between student and teacher centered) within the classroom, and technology integration. The results indicated that at the .05 level of probability, the only factor that met that level of significance was full implementation of RTI.
Date:
May 2011
Creator:
Moore, Linda H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Gibbs/Equilibrium Measures for Functions of Multidimensional Shifts with Countable Alphabets
Consider a multidimensional shift space with a countably infinite alphabet, which serves in mathematical physics as a classical lattice gas or lattice spin system. A new definition of a Gibbs measure is introduced for suitable real-valued functions of the configuration space, which play the physical role of specific internal energy. The variational principle is proved for a large class of functions, and then a more restrictive modulus of continuity condition is provided that guarantees a function's Gibbs measures to be a nonempty, weakly compact, convex set of measures that coincides with the set of measures obeying a form of the DLR equations (which has been adapted so as to be stated entirely in terms of specific internal energy instead of the Hamiltonians for an interaction potential). The variational equilibrium measures for a such a function are then characterized as the shift invariant Gibbs measures of finite entropy, and a condition is provided to determine if a function's Gibbs measures have infinite entropy or not. Moreover the spatially averaged limiting Gibbs measures, i.e. constructive equilibria, are shown to exist and their weakly closed convex hull is shown to coincide with the set of true variational equilibrium measures. It follows that the …
Date:
May 2011
Creator:
Muir, Stephen R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library