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32,362 Matching Results
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[Controlled Vocabulary Graphic]
This graphic expresses kinds of controlled vocabularies as a continuum of least to most complex and illustrates how different vocabularies are related; it includes notes describing the image on a separate page. The slide was used as a visual aid at a workshop during THATCamp (The Humanities and Technology Camp) as part of the Digital Frontiers conference at UNT Libraries.
Date:
September 22, 2012
Creator:
Tarver, Hannah
Object Type:
Image
System:
The UNT Digital Library
Are We There Yet? Toward a Workable Controlled Vocabulary for Music
This article discusses moving toward a workable controlled vocabulary for music.
Date:
July 2012
Creator:
McKnight, Mark, 1951-
Object Type:
Article
System:
The UNT Digital Library
The Controlled Substances Act: Regulatory Requirements
This report highlights certain non-criminal regulatory requirements of the Controlled Substances Act(CSA).
Date:
December 13, 2012
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Analysis
This presentation summarizes controlled hydrogen fleet & infrastructure analysis undertaken for the DOE Fuel Cell Technologies Program.
Date:
June 10, 2010
Creator:
Wipke, K.; Sprik, S.; Kurtz, J. & Ramsden, T.
Object Type:
Presentation
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Analysis
This presentation summarizes controlled hydrogen fleet and infrastructure analysis.
Date:
May 1, 2011
Creator:
Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Ainscough, C. & Saur, G.
Object Type:
Presentation
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Analysis
This is a presentation about the Fuel Cell Electric Vehicle Learning Demo, a 7-year project and the largest single FCEV and infrastructure demonstration in the world to date. Information such as its approach, technical accomplishments and progress; collaborations and future work are discussed.
Date:
May 1, 2012
Creator:
Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Ainscough, C. & Saur, G.
Object Type:
Presentation
System:
The UNT Digital Library
Controlled Vocabularies in the Digital Age: Are They Still Relevant?
Keyword searching and controlled vocabularies such as Library of Congress subject headings (LCSH) proved to work well together in automated technologies and the two systems have been considered complimentary. When the Internet burst onto the information landscape, users embraced the simplicity of keyword searching of this resource while researchers and scholars seemed unable to agree on how best to make use of controlled vocabularies in this huge database. This research looked at a controlled vocabulary, LCSH, in the context of keyword searching of a full text database. The Internet and probably its most used search engine, Google, seemed to have set a standard that users have embraced: a keyword-searchable single search box on an uncluttered web page. Libraries have even introduced federated single search boxes to their web pages, another testimony to the influence of Google. UNT's Thesis and Dissertation digital database was used to compile quantitative data with the results input into an EXCEL spreadsheet. Both Library of Congress subject headings (LCSH) and author-assigned keywords were analyzed within selected dissertations and both systems were compared. When the LCSH terms from the dissertations were quantified, the results showed that from a total of 788 words contained in the 207 LCSH …
Date:
August 2017
Creator:
Baker, William
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Demonstration Project
This program was undertaken in response to the US Department of Energy Solicitation DE-PS30-03GO93010, resulting in this Cooperative Agreement with the Ford Motor Company and BP to demonstrate and evaluate hydrogen fuel cell vehicles and required fueling infrastructure. Ford initially placed 18 hydrogen fuel cell vehicles (FCV) in three geographic regions of the US (Sacramento, CA; Orlando, FL; and southeast Michigan). Subsequently, 8 advanced technology vehicles were developed and evaluated by the Ford engineering team in Michigan. BP is Ford's principal partner and co-applicant on this project and provided the hydrogen infrastructure to support the fuel cell vehicles. BP ultimately provided three new fueling stations. The Ford-BP program consists of two overlapping phases. The deliverables of this project, combined with those of other industry consortia, are to be used to provide critical input to hydrogen economy commercialization decisions by 2015. The program's goal is to support industry efforts of the US President's Hydrogen Fuel Initiative in developing a path to a hydrogen economy. This program was designed to seek complete systems solutions to address hydrogen infrastructure and vehicle development, and possible synergies between hydrogen fuel electricity generation and transportation applications. This project, in support of that national goal, was designed …
Date:
March 31, 2010
Creator:
Staley, Dr. Scott
Object Type:
Report
System:
The UNT Digital Library
Optimally Controlled Flexible Fuel Powertrain System
The primary objective of this project was to develop a true Flex Fuel Vehicle capable of running on any blend of ethanol from 0 to 85% with reduced penalty in usable vehicle range. A research and development program, targeting 10% improvement in fuel economy using a direct injection (DI) turbocharged spark ignition engine was conducted. In this project a gasoline-optimized high-technology engine was considered and the hardware and configuration modifications were defined for the engine, fueling system, and air path. Combined with a novel engine control strategy, control software, and calibration this resulted in a highly efficient and clean FFV concept. It was also intended to develop robust detection schemes of the ethanol content in the fuel integrated with adaptive control algorithms for optimized turbocharged direct injection engine combustion. The approach relies heavily on software-based adaptation and optimization striving for minimal modifications to the gasoline-optimized engine hardware system. Our ultimate objective was to develop a compact control methodology that takes advantage of any ethanol-based fuel mixture and not compromise the engine performance under gasoline operation.
Date:
December 31, 2010
Creator:
Yilmaz, Hakan; Christie, Mark & Stefanopoulou, Anna
Object Type:
Report
System:
The UNT Digital Library
Optimally Controlled Flexible Fuel Powertrain System
A multi phase program was undertaken with the stated goal of using advanced design and development tools to create a unique combination of existing technologies to create a powertrain system specification that allowed minimal increase of volumetric fuel consumption when operating on E85 relative to gasoline. Although on an energy basis gasoline / ethanol blends typically return similar fuel economy to straight gasoline, because of its lower energy density (gasoline ~ 31.8MJ/l and ethanol ~ 21.1MJ/l) the volume based fuel economy of gasoline / ethanol blends are typically considerably worse. This project was able to define an initial engine specification envelope, develop specific hardware for the application, and test that hardware in both single and multi-cylinder test engines to verify the ability of the specified powertrain to deliver reduced E85 fuel consumption. Finally, the results from the engine testing were used in a vehicle drive cycle analysis tool to define a final vehicle level fuel economy result. During the course of the project, it was identified that the technologies utilized to improve fuel economy on E85 also enabled improved fuel economy when operating on gasoline. However, the E85 fueled powertrain provided improved vehicle performance when compared to the gasoline fueled …
Date:
June 30, 2011
Creator:
Sheppard, Duncan; Woodrow, Bruce; Kilmurray, Paul & Thwaite, Simon
Object Type:
Report
System:
The UNT Digital Library
Using Pre-Session Mindfulness to Improve Session Presence and Effectiveness: A Randomized-Controlled Trial
While a significant amount of research illustrates the overall positive effects of therapists' general use of mindfulness, very few studies have addressed whether therapists' use of mindfulness translates to improved psychotherapy outcomes. The present study utilized a randomized-controlled design to test whether a brief mindfulness training program and pre-session mindfulness practice could have a positive impact on therapy; in particular, we hypothesized that mindfulness training and practice would improve ratings on therapeutic presence as rated by clients and therapists and session effectiveness as rated by clients. The present study also examined whether clients' subjective ratings of therapy outcome and therapists' theoretical orientation impacted outcome measures after therapists completed mindfulness training. The 20 participating therapists were randomly assigned to either the mindfulness training (MT) group or control group according to a computer generated randomization list. Results indicated that clients did not significantly improve on outcome measures after completing the mindfulness training. Clients' subjective ratings on a psychotherapy outcome measure did predict changes in their ratings of therapeutic presence. This finding may have important implications for future research examining client characteristics that may moderate the relationship between therapeutic presence and session outcomes. Limitations of the present study and future directions are discussed.
Date:
August 2016
Creator:
Dunn, Rose
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Legal Issues Relating to the Disposal of Dispensed Controlled Substances
This report describes the provisions of the Controlled Substances Act and its implementing regulations that relate to patient disposal of unwanted prescription medication, as well as provides an analysis of the pending legislation.
Date:
July 30, 2010
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Legal Issues Relating to the Disposal of Dispensed Controlled Substances
Prescription drug abuse is the second-most common form of illicit drug abuse among teenagers in the United States, trailing only marijuana use. Prescription drug abuse has become a particular concern amongst federal policymakers. This report discusses this issue, including related pieces of legislation such as the Controlled Substances Act, the Secure and Responsible Drug Disposal Act of 2010, and the proper way to dispose of controlled substances.
Date:
October 19, 2010
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Legal Issues Relating to the Disposal of Dispensed Controlled Substances
This report describes an issue that is the fastest-growing drug problem in the country -- the intentional use of prescription drugs for non-medical purposes. It is the second-most common form of illicit drug abuse among teenagers in the United States behind marijuana use. Several bills have been introduced in the 111th Congress that would create a legal framework governing disposal of controlled substances that have been dispensed to patients.
Date:
September 24, 2010
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Controlled Hydrogen Fleet and Infrastructure Demonstration and Validation Project
General Motors, LLC and energy partner Shell Hydrogen, LLC, deployed a system of hydrogen fuel cell electric vehicles integrated with a hydrogen fueling station infrastructure to operate under real world conditions as part of the U.S. Department of Energy's Controlled Hydrogen Fleet and Infrastructure Validation and Demonstration Project. This technical report documents the performance and describes the learnings from progressive generations of vehicle fuel cell system technology and multiple approaches to hydrogen generation and delivery for vehicle fueling.
Date:
February 8, 2012
Creator:
Stottler, Gary
Object Type:
Report
System:
The UNT Digital Library
CO2 MONITORING FOR DEMAND CONTROLLED VENTILATION IN COMMERCIAL BUILDINGS
Carbon dioxide (CO{sub 2}) sensors are often deployed in commercial buildings to obtain CO{sub 2} data that are used, in a process called demand-controlled ventilation, to automatically modulate rates of outdoor air ventilation. The objective is to keep ventilation rates at or above design specifications and code requirements and also to save energy by avoiding excessive ventilation rates. Demand controlled ventilation is most often used in spaces with highly variable and sometime dense occupancy. Reasonably accurate CO{sub 2} measurements are needed for successful demand controlled ventilation; however, prior research has suggested substantial measurement errors. Accordingly, this study evaluated: (a) the accuracy of 208 CO{sub 2} single-location sensors located in 34 commercial buildings, (b) the accuracy of four multi-location CO{sub 2} measurement systems that utilize tubing, valves, and pumps to measure at multiple locations with single CO{sub 2} sensors, and (c) the spatial variability of CO{sub 2} concentrations within meeting rooms. The field studies of the accuracy of single-location CO{sub 2} sensors included multi-concentration calibration checks of 90 sensors in which sensor accuracy was checked at multiple CO{sub 2} concentrations using primary standard calibration gases. From these evaluations, average errors were small, -26 ppm and -9 ppm at 760 and 1010 …
Date:
March 17, 2010
Creator:
Fisk, William J.; Sullivan, Douglas P.; Faulkner, David & Eliseeva, Ekaterina
Object Type:
Report
System:
The UNT Digital Library
Pediatric Feeding Disorders: A Controlled Comparison of Multidisciplinary Inpatient and Outpatient Treatment of Gastrostomy Tube Dependent Children
The efficacy of multidisciplinary inpatient and outpatient treatment for transitioning children with severe pediatric feeding disorders from gastrostomy tube dependency to oral nutrition was investigated utilizing caloric and fluid intakes as an outcome measure. The study involved 29 children ages 12 months to 5 years of age with gastrostomy tube dependency. Treatments were provided by speech therapists, occupational therapist, dietician and psychologist for a 30 day period. Four treatment groups were evaluated and average intakes compared at 4 observation periods including pretreatment, initiation of treatment, completion of treatment at 30 days and 4 month follow-up. Children receiving inpatient treatment for feeding disorders evidenced significant differences in oral caloric intake from pretreatment to discharge than outpatient treatment (p < .01) and wait list control group (p = .04). Oral caloric intake from discharge to 4 month follow up yielded no significant differences indicating treatment gains were maintained. Change in environment and caretaker showed a significant effect for the inpatient group (d = 1.89). Effects of treatment by age and weight at 4 month follow up were also analyzed.
Date:
December 2010
Creator:
Cornwell, Sonya L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Legal Authorities Under the Controlled Substances Act to Combat the Opioid Crisis
This report discusses legal authorities available to the federal government under the Controlled Substances Act (CSA) that could be used to combat the opioid epidemic. The report then examines DEA initiatives and actions taken, pursuant to its legal authorities under the CSA, which specifically target the abuse of opioids. It concludes by discussing selected opioid-related legislative proposals in the 115th Congress that would amend the CSA.
Date:
April 16, 2018
Creator:
Yeh, Brian T.
Object Type:
Report
System:
The UNT Digital Library
Construction of High-Performance, Low-Cost Photoelectrodes with Controlled Polycrystalline Architectures
The major goal of our research was to gain the ability in electrochemical synthesis to precisely control compositions and morphologies of various oxide-based polycrystalline photoelectrodes in order to establish the composition-morphology-photoelectrochemical property relationships while discovering highly efficient photoelectrode systems for use in solar energy conversion. Major achievements include: development of porous n-type BiVO{sub 4} photoanode for efficient and stable solar water oxidation; development of p-type CuFeO{sub 2} photocathode for solar hydrogen production; and junction studies on electrochemically fabricated p-n Cu{sub 2}O homojunction solar cells for efficiency enhancement.
Date:
June 30, 2013
Creator:
Choi, Kyoung-Shin
Object Type:
Report
System:
The UNT Digital Library
Ring Walking/Oxidative Addition Reactions for the Controlled Synthesis of Conjugated Polymers
Power conversion efficiencies of plastic solar cells depend strongly on the molecular weight characteristics of the semiconducting polymers used for their fabrication. The synthesis of these materials typically relies on transition metal mediated catalytic reactions. In many instances, the ideal structures cannot be attained because of deficiencies in these reactions, particularly when it comes to being able to achieve high number average molecular weights and narrow molecular weight distributions. Another important conjugated polymer structure of interest is one in which a single functional group is attached at the end group of the chain. Such systems would be ideal for modifying surface properties at interfaces and for labeling biomolecular probes used in fluorescent biosensors. To respond to the challenges above, our efforts have centered on the design of homogenous transition metal complexes that are easy to prepare and effective in carrying out living, or quasi-living, condensative chain polymerization reactions. The key mechanistic challenge for the success of this reaction is to force the insertion of one monomer unit at a time via a process that involves migration of the transition metal-containing fragment to one terminus of the polymer chain. Chain growth characteristics are therefore favored when the metal does not dissociate …
Date:
April 3, 2012
Creator:
Bazan, Guillermo C
Object Type:
Report
System:
The UNT Digital Library
84th Texas Legislature, Regular Session, Senate Bill 173, Chapter 65
Bill introduced by the Texas Senate relating to the designation for criminal prosecution and other purposes of certain chemicals commonly referred to as synthetic cannabinoids as controlled substances and controlled substance analogues under the Texas Controlled Substances Act.
Date:
May 22, 2015
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
List of Contractors to Support Anthrax Remediation
This document responds to a need identified by private sector businesses for information on contractors that may be qualified to support building remediation efforts following a wide-area anthrax release.
Date:
May 14, 2010
Creator:
Judd, Kathleen S. & Lesperance, Ann M.
Object Type:
Report
System:
The UNT Digital Library
North Korea: Terrorism List Removal
This report discusses the issue of North Korea's inclusion on the U.S. list of terrorism-supporting countries that has been a major issue in U.S.-North Korean diplomacy since 2000, particularly in connection with negotiations over North Korea's nuclear program. North Korea demanded that the Clinton and Bush Administration remove North Korea from the terrorism support list. Secretary of State Clinton said on June 7, 2009, that the Obama Administration would consider reinstating North Korea on the list.
Date:
January 6, 2010
Creator:
Niksch, Larry A.
Object Type:
Report
System:
The UNT Digital Library
North Korea: Back on the Terrorism List?
This report describes the rationales for including North Korea on the terrorism list from 1987- 2008, for North Korea's delisting in 2008, and the debate in 2010 over whether to re-list North Korea.
Date:
May 24, 2010
Creator:
Manyin, Mark E.
Object Type:
Report
System:
The UNT Digital Library