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open access

3D Printed Self-Activated Carbon Electrodes for Supercapacitor Applications

Description: This study investigated a new approach to achieving high energy density supercapacitors (SCs) by using high surface area self-activated carbon from waste coffee grounds (WCGs) and modifying 3D printed electrodes' porous structure by varying infill density. The derived activated carbons' surface area, pore size, and pore volume were controlled by thermally treating the WCGs at different temperatures (1000˚C, 1100˚C, and 1200˚C) and post-treating with HCL to remove water-soluble ashes and contami… more
Date: July 2023
Creator: Disi, Onome Aghogho

3D Printing of Zinc Anode for Zinc Ion Batteries

Description: Recently, 3D printing has received increasing attention for the fabrication and assembly of electrodes for batteries due to the freedom of creating structures in any shape or size, porosity, flexibility, stretchability, and chemistry. Particularly, zinc ion batteries (ZIBs) are favored due to high safety, cheap materials cost, and high volumetric capacity (5,849 mAh/cm3), however, rapid evaporation of Zn due to low melting temperature has limited its 3D printability via conventional laser-based… more
Date: December 2021
Creator: Amoko, Stephen Adot Oyo
open access

3D Reconstruction Using Lidar and Visual Images

Description: In this research, multi-perspective image registration using LiDAR and visual images was considered. 2D-3D image registration is a difficult task because it requires the extraction of different semantic features from each modality. This problem is solved in three parts. The first step involves detection and extraction of common features from each of the data sets. The second step consists of associating the common features between two different modalities. Traditional methods use lines or ortho… more
Date: December 2012
Creator: Duraisamy, Prakash

3Dhotbed

Description: Presented at the 2017 Code4Lib South Central Conference. This presentation provides an overview of the 3Dhobed project, including the process of 3D scanning, modeling, and printing hand moulds for book history instruction.
Date: August 11, 2017
Creator: Jacobs, Courtney E.; McIntosh, Marcia & O'Sullivan, Kevin

3DHotbed Project 2017-2018 Update

Description: Presentation for the 2018 Day of Digital Humanities at the University of North Texas Libraries. This presentation provides an overview of the 3D History of the Book Education (3D Hotbed) project and an update on future developments.
Date: March 6, 2018
Creator: McIntosh, Marcia; Jacobs, Courtney E. & O'Sullivan, Kevin
open access

3GPP Long Term Evolution LTE Scheduling

Description: Future generation cellular networks are expected to deliver an omnipresent broadband access network for an endlessly increasing number of subscribers. Long term Evolution (LTE) represents a significant milestone towards wireless networks known as 4G cellular networks. A key feature of LTE is the implementation of enhanced Radio Resource Management (RRM) mechanism to improve the system performance. The structure of LTE networks was simplified by diminishing the number of the nodes of the core ne… more
Date: December 2013
Creator: Alotaibi, Sultan
open access

3rd African Drought Adaptation Forum report, Addis Ababa, Ethiopia, 17-19 September 2008

Description: The Third African Drought Adaptation Forum was held in September 2008 in Addis Ababa, Ethiopia. The Forum was organized so that participants could exchange practical experiences, findings and ideas on how to adapt to the increasing threat of drought and climate change in the drylands of Africa. The report contains a summary of sessions and outlines key themes that emerged from the discussions.
Date: September 2008
Creator: UNDP Drylands Development Centre; United Nations Office for Disaster Risk Reduction & Economic Commission for Africa
open access

The a Cappella Choral Music of Benjamin Britten

Description: The twentieth century has witnessed a renaissance in the composition of choral music. Not since the Baroque, has choral writing held the prominent position with composers that it has today. At the same time, English composers have regained a stature and influence they have not held since the time of Purcell. It was not until the time of Edward Elgar, Gustave Holst, and Ralph Vaughn-Williams that English music began to recover from the decline of the nineteenth century. Benjamin Britten has play… more
Date: August 1963
Creator: Corse, Larry B.
open access

D. A. Kolb’s Theory of Experiential Learning: Implications for the Development of Music Theory Instructional Material

Description: This research project evaluates the effectiveness of specific music theory instructional strategies in terms of D. A. Kolb’s theory of experiential learning and Kolb’s typology of individual learning style. The project provides an original methodology for the adaptation of music theory instructional material to the individual learning style types described in Kolb’s typology. The study compares the relative effectiveness of two music theory instructional sequences, one of which is adapted for a… more
Date: August 2001
Creator: Lively, Michael
open access

AACR 2 Headings: A Five-Year Projection of Their Impact on Catalogs

Description: Text providing an overview of research and results regarding the implementation of AACR2 (Anglo-American Cataloging Rules, Second Edition) and the effects on existing catalogs. It includes an overview of the problem and hypotheses, literature review, general research method, description of study libraries, differences found in samples between AACR 2 and pre-AACR 2 headings, conflicting headings found in catalogs, OCLC (Online Computer Library Center) and AACR 2 headings, summary and conclusion… more
Date: 1982
Creator: Taylor, Arlene G., 1941-
open access

Aaron Copland's Concerto for Clarinet: A Lecture Recital, Together with Three Recitals of Music by Mozart, Rossini, Schumann, Brahms, and Contemporary European and American Composers

Description: The dissertation consists of four recitals: one chamber music recital, two solo recitals, and one lecture recital. The repertoire of these programs was chosen with the intention of demonstrating the capability of the performer to deal with problems arising in works of varying types and of different historical periods. The lecture recital, Aaron Copland's Concerto for Clarinet, begins with biographical information, followed by a discussion of various other works of the composer and of important … more
Date: August 1971
Creator: Bullock, Bruce Lloyd
open access

Aaron Copland's Symphonic Use of Brass Instruments

Description: Traditions in orchestration can be described by relating the practices of most of the important composers of a particular time. This was done with great success by two composers of the nineteenth century, Hector Berlioz and Nicolai Rimsky-Korsakov, in their books on orchestration. These texts are the basis for the traditional uses of brass instruments appearing in the chapter.
Date: August 1965
Creator: Hasty, Patrick R. (Patrick Robert)
open access

Ab Initio and Density Functional Investigation of the Conformer Manifold of Melatonin and a Proposal for a Simple Dft-based Diagnostic for Nondynamical Correlation

Description: In this work we address two problems in computational chemistry relevant to biomolecular modeling. In the first project, we consider the conformer space of melatonin as a a representative example of “real-life” flexible biomolecules. Geometries for all 52 unique conformers are optimized using spin-component scaled MP2, and then relative energies are obtained at the CCSD (T) level near the complete basis set limit. These are then used to validate a variety of DFT methods with and without empiric… more
Date: August 2013
Creator: Fogueri, Uma
open access

Abelian Group Actions and Hypersmooth Equivalence Relations

Description: We show that any Borel action on a standard Borel space of a group which is topologically isomorphic to the sum of a countable abelian group with a countable sum of lines and circles induces an orbit equivalence relation which is hypersmooth. We also show that any Borel action of a second countable locally compact abelian group on a standard Borel space induces an orbit equivalence relation which is essentially hyperfinite, generalizing a result of Gao and Jackson for the countable abelian grou… more
Date: May 2019
Creator: Cotton, Michael R.
open access

Ability Estimation Under Different Item Parameterization and Scoring Models

Description: A Monte Carlo simulation study investigated the effect of scoring format, item parameterization, threshold configuration, and prior ability distribution on the accuracy of ability estimation given various IRT models. Item response data on 30 items from 1,000 examinees was simulated using known item parameters and ability estimates. The item response data sets were submitted to seven dichotomous or polytomous IRT models with different item parameterization to estimate examinee ability. The accur… more
Date: May 2002
Creator: Si, Ching-Fung B.
open access

Ability Grouping in College Beginning Media Writing Classes

Description: The problem with which this investigation is concerned is that students of unequal writing ability are frequently placed in the same beginning media writing classes in college journalism. It is difficult for a teacher to be effective when the ability of the students ranges from those who cannot write clear complete sentences to others whose work already appears in newspapers and magazines. The purpose of this study is to determine whether students who are ability grouped into slow—average and a… more
Date: December 1987
Creator: Haber, Marian Wynne
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