Access
Partner
Collection
Serial/Series Title
Degree Department
Libraries
63
Digital Projects Unit
55
Department of Psychology
45
UNT Libraries
29
Department of Biological Sciences
26
Department of Teacher Education and Administration
24
Department of Computer Science and Engineering
22
Department of Counseling and Higher Education
22
Department of Chemistry
21
Department of Instrumental Studies
21
66 More
Degree Discipline
Degree Level
Country
States
Year
Month
Language
1,193 Matching Results
Results open in a new window/tab.
prev
Results:
1,177 - 1,193 of
1,193
Session 2: Imagining Digital Communities Question and Answer Segment
Recording of a question and answer session at the 2015 Digital Frontiers Annual Conference. In this session, presenters from the Imagining Digital Communities session answer questions from the audience.
Date:
September 2015
Creator:
Seiple, Lizzie & Cowick, Jeff
Object Type:
Video
System:
The UNT Digital Library
Let’s Plays: Curating a New Type of Discourse for Digital Play Experiences
Recording of a presentation session at the 2015 Digital Frontiers Annual Conference. In this session, the presenter discusses the potential of Let's Plays for academic critique and archival for video game studies.
Date:
September 2015
Creator:
Joyce, Lindsey
Object Type:
Video
System:
The UNT Digital Library
Closing Keynote: “Dark Matter”
Recording of a presentation session at the 2015 Digital Frontiers Annual Conference. In this session, the presenter discusses the role of unplanned, simple content that fills the web is a less "visible" way, and how the public finds meaning in content that large organizations may not traditionally conceptualize.
Date:
September 2015
Creator:
Edson, Michael Peter
Object Type:
Video
System:
The UNT Digital Library
“Day at UNT” Program: Integrating Research Using Digital Primary Sources into K-12 Outreach
Recording of a presentation session at the 2015 Digital Frontiers Annual Conference. In this session, the presenter discusses how the middle school participants in the Day At UNT program learn about the use of primary materials from the librarians in Special Collections.
Date:
September 2015
Creator:
Jacobs, Courtney E.
Object Type:
Video
System:
The UNT Digital Library
Session 7: Memory and Forgetting on the Digital Frontier Question and Answer Segment
Recording of a question and answer session at the 2015 Digital Frontiers Annual Conference. In this session, presenters from the Imagining Digital Communities session answer questions from the audience.
Date:
September 2015
Creator:
Pollock, Jessica; Burrough, Xtine; Brown, Matthew & Famigliettii, Andrew
Object Type:
Video
System:
The UNT Digital Library
Session 1: Mapping the Future of Digital Scholarship Question & Answer Segment
Recording of a question and answer session at the 2015 Digital Frontiers Annual Conference. In this session, presenters from the Mapping the Future of Digital Scholarship session answer questions from the audience.
Date:
September 2015
Creator:
Burns, Douglas; Keralis, Spencer D. C.; Weimer, Katherine Hart; Sewell, Jeanette & Riedel, Brian
Object Type:
Video
System:
The UNT Digital Library
Space and Spectrum Engineered High Frequency Components and Circuits
With the increasing demand on wireless and portable devices, the radio frequency front end blocks are required to feature properties such as wideband, high frequency, multiple operating frequencies, low cost and compact size. However, the current radio frequency system blocks are designed by combining several individual frequency band blocks into one functional block, which increase the cost and size of devices. To address these issues, it is important to develop novel approaches to further advance the current design methodologies in both space and spectrum domains. In recent years, the concept of artificial materials has been proposed and studied intensively in RF/Microwave, Terahertz, and optical frequency range. It is a combination of conventional materials such as air, wood, metal and plastic. It can achieve the material properties that have not been found in nature. Therefore, the artificial material (i.e. meta-materials) provides design freedoms to control both the spectrum performance and geometrical structures of radio frequency front end blocks and other high frequency systems. In this dissertation, several artificial materials are proposed and designed by different methods, and their applications to different high frequency components and circuits are studied. First, quasi-conformal mapping (QCM) method is applied to design plasmonic wave-adapters and couplers …
Date:
May 2015
Creator:
Arigong, Bayaner
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Advanced Power Amplifiers Design for Modern Wireless Communication
Modern wireless communication systems use spectrally efficient modulation schemes to reach high data rate transmission. These schemes are generally involved with signals with high peak-to-average power ratio (PAPR). Moreover, the development of next generation wireless communication systems requires the power amplifiers to operate over a wide frequency band or multiple frequency bands to support different applications. These wide-band and multi-band solutions will lead to reductions in both the size and cost of the whole system. This dissertation presents several advanced power amplifier solutions to provide wide-band and multi-band operations with efficiency improvement at power back-offs.
Date:
August 2015
Creator:
Shao, Jin
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
Design of Frequency Output Pressure Transducer
Piezoelectricity crystal is used in different area in industry, such as downhole oil, gas industry, and ballistics. The piezoelectricity crystals are able to create electric fields due to mechanical deformation called the direct piezoelectric effect, or create mechanical deformation due to the effect of electric field called the indirect piezoelectric effect. In this thesis, piezoelectricity effect is the core part. There are 4 parts in the frequency output pressure transducer: two crystal oscillators, phase-locked loop (PLL), mixer, frequency counter. Crystal oscillator is used to activate the piezoelectricity crystal which is made from quartz. The resonance frequency of the piezoelectricity crystal will be increased with the higher pressure applied. The signal of the resonance frequency will be transmitted to the PLL. The function of the PLL is detect the frequency change in the input signal and makes the output of the PLL has the same frequency and same phase with the input signal. The output of the PLL will be transmitted to a Mixer. The mixer has two inputs and one output. One input signal is from the pressure crystal oscillator and another one is from the reference crystal oscillator. The frequency difference of the two signal will transmitted to the …
Date:
August 2015
Creator:
Ma, Jinge
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of Post-exercise Ethanol Consumption on the Acute Hormonal Response to Heavy Resistance Exercise in Women
The purpose of this study was to examine the hormonal response to acute ethanol ingestion following a bout of heavy resistance exercise in women. Eight resistance trained women completed two identical acute heavy resistance exercise tasks (AHRET). From 10-20 minutes post-AHRET, participants consumed either a grain ethanol or a placebo beverage. Blood was collected before (PRE) and immediately after the AHRET (IP) and then every 20 minutes for five hours. Blood collected after beverage ingestion was pooled into 3 batches (phases: 20-40 minutes, 60-120 minutes, and 140-300 minutes post-exercise) and analyzed for serum total testosterone (TT), free testosterone (FT), insulin-like growth factor-I (IGF-I), human growth hormone (GH), cortisol (COR), and estradiol (E2) concentrations. Circulating concentrations of TT were significantly greater at P20-40 than at PRE, P60-120, and P140-300. Circulating concentrations of FT were significantly greater at P20-40 than at all other times. Circulating concentrations of GH were significantly greater at IP than at PRE, P60-120, and P140-300. Circulating concentrations of COR were significantly greater at P20-40 than at all other times. Additionally, COR concentrations at P140-300 were significantly lower than at all other times. Circulating concentrations of IGF-1 were significantly greater at P20-40 than at P60-120 and P140-300. Circulating concentrations …
Date:
December 2015
Creator:
Budnar, Ronald Gene, Jr.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Quantitative EEG Analysis of Individuals with Chronic Pain
Recent advances in neuroimaging and electromagnetic measurement technology have permitted the exploration of structural and functional brain alterations associated with chronic pain. A number of cortical and subcortical brain regions have been found to be involved in the experience of chronic pain (Baliki et al., 2008; Jensen et al., 2010). Evidence suggests that living with chronic pain shapes the brain from both an architectural and a functional perspective, and that individuals living with chronic pain display altered brainwave activity even at rest. Quantitative EEG (qEEG) is a method of spectral analysis that utilizes a fast Fourier transform algorithm to convert analog EEG signals into digital signals, allowing for precise quantification and analysis of signals both at single electrode locations and across the scalp as a whole. An important advance that has been permitted by qEEG analysis is the development of lifespan normative databases against which individual qEEGs can be compared (Kaiser, 2006; Thatcher et al, 2000). Pilot data utilizing qEEG to examine brainwave patterns of individuals with chronic pain have revealed altered EEG activity at rest compared to age- and gender-matched healthy individuals (Burroughs, 2011). The current investigation extended the findings of the pilot study by utilizing qEEG to examine …
Date:
December 2015
Creator:
Burroughs, Ramona D.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Algorithmic Music Analysis: a Case Study of a Prelude From David Cope’s “From Darkness, Light”
The use of algorithms in compositional practice has been in use for centuries. With the advent of computers, formalized procedures have become an important part of computer music. David Cope is an American composer that has pioneered systems that make use of artificial intelligence programming techniques. In this dissertation one of David Cope’s compositions that was generated with one of his processes is examined in detail. A general timeline of algorithmic compositional practice is outlined from a historical perspective, and realized in the Common Lisp programming language as a musicological tool. David Cope’s compositional output is summarized with an explanation of what types of systems he has utilized in the analyses of other composers’ music, and the composition of his own music. Twentieth century analyses techniques are formalized within Common Lisp as algorithmic analyses tools. The tools are then combined with techniques developed within other computational music analyses tools, and applied toward the analysis of Cope’s prelude. A traditional music theory analysis of the composition is provided, and outcomes of computational analyses augment the traditional analysis. The outcome of the computational analyses, or algorithmic analyses, is represented in statistical data, and corresponding probabilities. From the resulting data sets part of …
Date:
May 2015
Creator:
Krämer, Reiner
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Hexagon, Volume 106, Number 1, Spring 2015
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:
Spring 2015
Creator:
Alpha Chi Sigma
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Hexagon, Volume 106, Number 4, Winter 2015
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 2015
Creator:
Alpha Chi Sigma
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Hexagon, Volume 106, Number 3, Fall 2015
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 2015
Creator:
Alpha Chi Sigma
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Hexagon, Volume 106, Number 2, Summer 2015
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:
Summer 2015
Creator:
Alpha Chi Sigma
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library