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1,199 Matching Results
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Texas Jewish Post (Dallas, Tex.), Vol. 69, No. 49, Ed. 1 Thursday, December 3, 2015
Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 3, 2015
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Dallas, Tex.), Vol. 69, No. 50, Ed. 1 Thursday, December 10, 2015
Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 10, 2015
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Dallas, Tex.), Vol. 69, No. 51, Ed. 1 Thursday, December 17, 2015
Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 17, 2015
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Dallas, Tex.), Vol. 69, No. 52, Ed. 1 Thursday, December 24, 2015
Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 24, 2015
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Jewish Post (Dallas, Tex.), Vol. [70], No. [1], Ed. 1 Thursday, December 31, 2015
Weekly Jewish newspaper from Dallas, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 31, 2015
Creator:
Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
Variational Calculations of Positronium Scattering with Hydrogen
Positronium-hydrogen (Ps-H) scattering is of interest, as it is a fundamental four-body Coulomb problem. We have investigated low-energy Ps-H scattering below the Ps(n=2) excitation threshold using the Kohn variational method and variants of the method with a trial wavefunction that includes highly correlated Hylleraas-type short-range terms. We give an elegant formalism that combines all Kohn-type variational methods into a single form. Along with this, we have also developed a general formalism for Kohn-type matrix elements that allows us to evaluate arbitrary partial waves with a single codebase. Computational strategies we have developed and use in this work will also be discussed.With these methods, we have computed phase shifts for the first six partial waves for both the singlet and triplet states. The 1S and 1P phase shifts are highly accurate results and could potentially be viewed as benchmark results. Resonance positions and widths for the 1S-, 1P-, 1D-, and 1F-waves have been calculated.We present elastic integrated, elastic differential, and momentum transfer cross sections using all six partial waves and note interesting features of each. We use multiple effective range theories, including several that explicitly take into account the long-range van der Waals interaction, to investigate scattering lengths for the 1,3S …
Date:
December 2015
Creator:
Woods, Denton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Attachment Theory Within Clinical Supervision: Application of the Conceptual to the Empirical
Attachment theory has established itself as applicable to many types of relationships, encompassing caregiver-child, romantic, interpersonal, and psychotherapeutic interactions. This project sought to investigate the application of attachment theory to clinical supervision. Using suggestions put forth in previous work by Watkins and Riggs, this study examined the dyadic interactions inherent in both supervision and attachment. Using the working alliance as determination of the quality of supervision, attachment styles, leader-follower attachment, and attachment-based expectations were explored as predictors for supervisor-trainee dyad outcome in a training clinic for doctoral psychology students. The study design is longitudinal and prospective. Findings indicate the necessity of measurement of supervisory-specific attachment rather than general attachment, the stability of working alliance over time, and the large contribution of the leader-member attachment framework to the understanding of supervisory attachment. Implications include the importance of maintaining hierarchical, evaluative boundaries within supervisory relationship, consistent with a leader-follower dynamic.
Date:
August 2015
Creator:
Wrape, Elizabeth R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Determinants of Citizens’ 311 Use Behaviors: 311 Citizen-initiated Contact, Contact Channel Choice, and Frequent Use
Facing increasingly complex policy issues and diminishing citizen satisfaction with government and service performance, managing the quality of citizen relationship management has become a main challenge for public managers. Solutions to complex policy problems of service performance and low level of citizen participation often must be developed by encouraging citizens to make their voices heard through the various participation mechanisms. Reflecting on this need, the municipal governments in the U.S. have developed centralized customer systems for citizen relationship management. 311 centralized customer system (named 311 in this study) has the functions of citizen-initiated contact, service-coproduction, and transaction, and many local governments launch 311 to maintain or enhance their relationship with the public. Using 311 is an easy and free technically for citizens, but ensuring some degree of citizen engagement and citizens’ 311 use has been challenging for local public managers of municipalities. Despite calls for the importance of 311 in the service and information delivery process, fair treatment and access to use of governmental information, citizen participation, government responsiveness, and citizen satisfaction, to the best of our understanding, no empirical studies explore citizens’ 311 behaviors in the micro and individual level in the field of public administration. This dissertation provides …
Date:
May 2015
Creator:
Wu, Wei-Ning
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Impact of Green Design and Technology on Building Environment
Currently, the public has a strong sense of the need for environment protection and the use of sustainable, or “green,” design in buildings and other civil structures. Since green design elements and technologies are different from traditional design, they probably have impacts on the building environment, such as vibration, lighting, noise, temperature, relative humidity, and overall comfort. Determining these impacts of green design on building environments is the primary objective of this study. The Zero Energy Research (ZOE) laboratory, located at the University of North Texas Discovery Park, is analyzed as a case study. Because the ZOE lab is a building that combines various green design elements and energy efficient technologies, such as solar panels, a geothermal heating system, and wind turbines, it provides an ideal case to study. Through field measurements and a questionnaire survey of regular occupants of the ZOE lab, this thesis analyzed and reported: 1) whether green design elements changed the building’s ability to meet common building environmental standards, 2) whether green design elements assisted in Leadership in Energy and Environmental Design (LEED) scoring, and 3) whether green design elements decreased the subjective comfort level of the occupants.
Date:
December 2015
Creator:
Xiong, Liang
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Spray Cooling with HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics
This study aims to experimentally investigate the spray cooling characteristics for active two-phase cooling of automotive power electronics. Tests are conducted on a small-scale, closed loop spray cooling system featuring a pressure atomized spray nozzle. Two types of refrigerants, HFC-134a (R-134a) and HFO-1234yf, are selected as the working fluids. The test section (heater), made out of oxygen-free copper, has a 1-cm2 plain, smooth surface prepared following a consistent procedure, and would serve as a baseline case. Matching size thick film resistors, attached onto the copper heaters, generate heat and simulate high heat flux power electronics devices. The tests are conducted by controlling the heat flux in increasing steps, and recording the corresponding steady-state temperatures to obtain cooling curves. The working fluid is kept at room temperature level (22oC). Performance comparisons are made based on heat transfer coefficient (HTC) and critical heat flux (CHF) values. Effects of spray characteristics and liquid flow rates on the cooling performance are investigated with the selected coolants. Three types of commercially available nozzles that generate full-cone sprays with fine droplets are utilized in the tests. Effect of liquid flow rate is evaluated varying flow rates at 2, 3, 4 ml/s. The experimental results obtained from …
Date:
December 2015
Creator:
Yaddanapudi, Satvik Janardhan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Essence of African Americans’ Decisions to Seek Professional Counseling Services: a Phenomenological Study
Mental health disparity is an emerging national concern with evidence suggesting individuals from non-dominant populations are less likely to seek and persist in mental health services compared to their dominant culture peers. In particular, African Americans may underutilize professional counseling services due to factors such as stigma, healthy cultural mistrust, and cultural values. To date, researchers have paid limited attention to ways to break through barriers to mental health equity. The purpose of this phenomenological study was to explore African Americans’ experiences and decision-making seeking professional counseling services. I addressed the following questions: How do African Americans make meaning of their decision to seek counselor services? What considerations are involved in decision- making with African Americans who decide to seek professional counseling services? Participants included 10 African American women who had attended counseling with a licensed professional counselor (LPC) or LPC Intern in the past three years. I identified six emergent themes through adapted classic phenomenological analysis: feelings prior to attending counseling, coping mechanisms utilized prior to counseling, barriers to treatment, motivation to attend counseling, characteristics of counselor, and post counseling experiences. Participants reported increased personal growth, insight, and desire to recommend counseling to others. Findings inform communities about what …
Date:
August 2015
Creator:
Yaites, LaToya D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Study of Mechanical Performance of Stent Implants Using Theoretical and Numerical Approach
The coronary heart disease kills more than 350,000 persons/year and it costs $108.9 billion for the United States each year, in spite of significant advancements in clinical care and education for public, cardiovascular diseases (CVD) are leading cause of death and disability to the nation. A cardiovascular disease involves mainly heart or blood vessels (arteries, veins and capillaries) or both, and then mainly occurs in selected regions and affects heart, brain, kidney and peripheral arteries. As a surgical interventions, stent implantation is deployed to cure or ameliorate the disease. However, the high failure rate of stents used in patients with peripheral artery diseases has lead researchers to give special attention towards analyzing stent structure and characteristics. In this research, the mechanical properties of a stent based on the rhombus structure were analyzed and verified by means of analytical and numerical approaches. Theoretical model based on the beam theory were developed and numerical models were used to analyze the response of these structures under various and complex loading conditions. Moreover, the analysis of the stent inflation involves a model with large deformations and large strains, nonlinear material properties need to be considered to accurately capture the deformation process. The maximum stress …
Date:
August 2015
Creator:
Yang, Hua, (Mechanical engineer)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Professor Han Xianguang and His Contribution to the Horn World
This dissertation verifies Professor Han, Xianguang as the most significant Chinese horn player and teacher in the twentieth century. He was the first Chinese horn player to win in an international horn competition and the first president of the China Horn Association. He was the premier performer of the only known Chinese horn concerto: Fantasy-Concerto <In Memory>, composed by Professor Shi Yongkang in 1962. Professor Han also served as a judge for many international horn solo and chamber music competitions, and was president of the first (2012), second (2013), and third (2014) CCOM (Central College of Music) International Horn Festivals in Beijing. This dissertation explores Professor Han’s professional and pedagogical contributions to the horn world. These contributions will, in turn, provide an overview of the evolution of the horn and horn playing in China. The horn, historically and musically an instrument of Western Europe, was transported to Asia by many horn players and teachers, with Professor Han the most significant figure in its evolution in China. During Professor Han’s 60-year teaching career, he developed a special pedagogical system. A number of his outstanding horn students, including two sons, eventually became principal hornists in orchestras throughout China, with a few hired …
Date:
December 2015
Creator:
Yeoh, Li Zhi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Adult Attachment, Acculturation, and Help-seeking Attitudes of Latino College Students
Based on theoretical reasoning and empirical evidence, the present study examined the unique and shared effects of attachment anxiety, attachment avoidance, and acculturation on attitudes toward seeking professional help among Latino college students. The research participants included 149 bilingual Latino college students from a large, public southwestern university. Results of a multiple regression analysis indicated that attachment avoidance was positively associated with both the recognition of need for psychological help and stigma of seeking professional help. Acculturation to American society was found to be statistically insignificant in predicting help-seeking attitudes in this sample of the population. Findings from exploratory questions suggested that Latino individuals would most likely seek help from parents, close friends, and then professionals. This study suggested that Latino individuals with high attachment avoidance acknowledge the potential benefit of professional help-seeking but distrust the process of approaching others for help. Limitations, implications, and future research directions will be discussed.
Date:
May 2015
Creator:
Zamudio, Gabriel
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Evaluating Semantic Internalization Among Users of an Online Review Platform
The present study draws on recent sociological literature that argues that the study of cognition and culture can benefit from theories of embodied cognition. The concept of semantic internalization is introduced, which is conceptualized as the ability to perceive and articulate the topics that are of most concern to a community as they are manifested in social discourse. Semantic internalization is partly an application of emotional intelligence in the context of community-level discourse. Semantic internalization is measured through the application of Latent Semantic Analysis. Furthermore, it is investigated whether this ability is related to an individual’s social capital and habitus. The analysis is based on data collected from the online review platform yelp.com.
Date:
August 2015
Creator:
Zaras, Dimitrios
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Extended Date/Time Format (EDTF) in the Digital Public Library of America's Metadata: Exploratory Analysis
This paper presents results of an exploratory analysis of representation of dates in over 8 million metadata records from the Digital Public Library of America (DPLA), and compares it to Extended Date/Time Format (EDTF) specifications.
Date:
November 6, 2015
Creator:
Zavalina, Oksana; Phillips, Mark Edward; Alemneh, Daniel Gelaw; Tarver, Hannah & Kizhakkethil, Priya
Object Type:
Paper
System:
The UNT Digital Library
Student and Family Perspectives on Gifted and Advanced Academics Participation for African American High School Students
Many students and their families do not understand the impact of students’ involvement in gifted or advanced academics educational programs and their potentially positive effects and challenges. Nationally African American students are underrepresented in gifted and advanced academics courses in high schools; however, African American students and families often do not advocate for their inclusion in these educational pathways. A survey of literature supporting this study of voices of African American families concerning gifted and advanced academics participation focused on (1) the historical underpinnings for equity and excellence for African American and for gifted and advanced academics learners, (2) how the lack of an agreed upon definition of gifted and advanced academics by the professional field might contribute to the problem, and (3) how African American parents made educational decisions for and with their children, especially concerning college. Employing semi-structured interviews and a focus group, this qualitative case study examined how four students from each of three groups, gifted and talented, advanced academics, and neither, and a representative group of their parents perceived these programs and their children’s involvement in them within the framework provided by a single school district. African American families in this study asked for a partnership …
Date:
August 2015
Creator:
Zeske, Karen Marie
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synchrotron Radiation X-Ray Diffraction of Nickel-Titanium Shape Memory Alloy Wires During Mechanical Deformation
Shape memory alloys (SMAs) are a new generation material which exhibits unique nonlinear deformations due to a phase transformation which allows it to return to its original shape after removal of stress or a change in temperature. It shows a shape memory effect (martensitic condition) and pseudoelasticity (austenitic condition) properties depends on various heat treatment conditions. The reason for these properties depends on phase transformation through temperature changes or applied stress. Many technological applications of austenite SMAs involve cyclical mechanical loading and unloading in order to take advantage of pseudoelasticity, but are limited due to poor fatigue life. In this thesis, I investigated two important mechanical feature to fatigue behavior in pseudoelastic NiTi SMA wires using high energy synchrotron radiation X-ray diffraction (SR-XRD). The first of these involved simple bending and the second of these involved relaxation during compression loading. Differential scanning calorimetry (DSC) was performed to identify the phase transformation temperatures. Scanning electron microscopy (SEM) images were collected for the initial condition of the NiTi SMA wires and during simple bending, SEM revealed that micro-cracks in compression regions of the wire propagate with increasing bend angle, while tensile regions tend to not exhibit crack propagation. SR-XRD patterns were analyzed …
Date:
December 2015
Creator:
Zhang, Baozhuo
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Adaptive Power Management for Autonomic Resource Configuration in Large-scale Computer Systems
In order to run and manage resource-intensive high-performance applications, large-scale computing and storage platforms have been evolving rapidly in various domains in both academia and industry. The energy expenditure consumed to operate and maintain these cloud computing infrastructures is a major factor to influence the overall profit and efficiency for most cloud service providers. Moreover, considering the mitigation of environmental damage from excessive carbon dioxide emission, the amount of power consumed by enterprise-scale data centers should be constrained for protection of the environment.Generally speaking, there exists a trade-off between power consumption and application performance in large-scale computing systems and how to balance these two factors has become an important topic for researchers and engineers in cloud and HPC communities. Therefore, minimizing the power usage while satisfying the Service Level Agreements have become one of the most desirable objectives in cloud computing research and implementation. Since the fundamental feature of the cloud computing platform is hosting workloads with a variety of characteristics in a consolidated and on-demand manner, it is demanding to explore the inherent relationship between power usage and machine configurations. Subsequently, with an understanding of these inherent relationships, researchers are able to develop effective power management policies to optimize …
Date:
August 2015
Creator:
Zhang, Ziming
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Design fully-integrated dual-band two-stage class-E CMOS PA
In retrospect we can see that from the last century, wireless electronic technology has been in a rapid state of development. With the popularity of wireless communication, the power amplifier demand is rising. In general, magnitude, maximum noise figure, minimum noise figure, efficiency, and output power are important indicators of the amplifier. The IC industry is exploring how to reduce the additional cost and improve the high-frequency performance. Therefore, designing a strong adaptability and high cost performance of the PA has become a priority. As these technologies advance, the power amplifiers need to have better integration, lower cost, and lower power dissipation. Also, some special requirements are being asked in some areas, such as multi-mode and multi-band. In general, people have to use several power amplifiers parallel to frame a multifunction chip. Each of them working at different frequencies of interest has to have separate matching network, design, and area; also, the diversity amplifier prices will increase with the number of amplifiers, and its cost is also changed. In this thesis, because Class E power amplifier has lower power dissipation, 100% ideal efficiency, simple circuit structure, and strong applicability, the Class E is used as power amplifier in main stage. …
Date:
August 2015
Creator:
Zhao, Chao
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Testing the Psychometric Properties of the Online Student Connectedness Survey
The Online Student Connectedness Survey (OSCS) was introduced to the academic community in 2012 as an instrument designed to measure feelings of connectedness between students participating in online degree and certification programs. The purpose of this study was to examine data from the instrument for initial evidence of validity and reliability and to establish a nomological network between the OSCS and similar instruments utilized in the field. The study utilized sequential exploratory factor analysis- confirmatory factor analysis (EFA-CFA) and correlational analysis to assess results of the data. Students enrolled in online courses at higher education institutions located in the United States served as the sample for this study. Three instruments were used during the study. The OSCS was administered first so that the factor structure could be examined for factor validity. Once confirmed, the Classroom Community Scale (CCS) and the Community of Inquiry Scale (COI) served as the instruments to examine nomological validity through correlational analysis of data.This study provided evidence of factor validity and reliability for data from the OSCS. After the initial EFA-CFA, the four-factor structure held, and 16 of the 25 original items remained for nomological testing. Statistically significant correlations were demonstrated between factors contained in the …
Date:
August 2015
Creator:
Zimmerman, Tekeisha
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
What if...?
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Date:
2015
Creator:
Zinn, Cristy; Hampton, Mary-Anne & Smith-Belton, Julie
Object Type:
Text
System:
The UNT Digital Library
Sociological Applications of Topic Extraction Techniques: Two Case Studies
Limited research has been conducted with regards to the applicability of topic extraction techniques in Sociology. Addressing the modern methodological opportunities, and responding to the skepticism with regards to the absence of theoretical foundations supporting the use of text analytics, I argue that Latent Semantic Analysis (LSA), complemented by other text analysis techniques and multivariate techniques, can constitute a unique hybrid method that can facilitate the sociological interpretations of web-based textual data. To illustrate the applicability of the hybrid technique, I developed two case studies. My first case study is associated with the Sociology of media. It focuses on the topic extraction and sentiment polarization among partisan texts posted on two major news sites. I find evidence of highly polarized opinions on comments posted on the Huffington Post and the Daily Caller. The highest polarizing topic was associated with a commentator’s reference on Hoodies in the context of the Trayvon Martin’s incident. My findings support contemporary research suggesting that media pundits frequently use tactics of outrage to provoke polarization of public opinion. My second case study contributes to the research domain of the Sociology of knowledge. The hybrid method revealed evidence of topical divides and topical “bridges” in the intellectual …
Date:
August 2015
Creator:
Zougris, Konstantinos
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library