Introducing name authority into an ETD collection

Article on introducing name authority into a large electronic theses and dissertations (ETD) collection

External Second Gate-Fourier Transform Ion Mobility Spectrometry.

Ion mobility spectrometry (IMS) is recognized as one of the most sensitive and versatile techniques for the detection of trace levels of organic vapors. IMS is widely used for detecting contraband narcotics, explosives, toxic industrial compounds and chemical warfare agents. Increasing threat of terrorist attacks, the proliferation of narcotics, Chemical Weapons Convention treaty verification as well as humanitarian de-mining efforts has mandated that equal importance be placed on the analysis time as well as the quality of the analytical data. (1) IMS is unrivaled when both speed of response and sensitivity has to be considered. (2) With conventional (signal averaging) IMS systems the number of available ions contributing to the measured signal to less than 1%. Furthermore, the signal averaging process incorporates scan-to-scan variations decreasing resolution. With external second gate Fourier Transform ion mobility spectrometry (FT-IMS), the entrance gate frequency is variable and can be altered in conjunction with other data acquisition parameters to increase the spectral resolution. The FT-IMS entrance gate operates with a 50% duty cycle and so affords a 7 to 10-fold increase in sensitivity. Recent data on high explosives are presented to demonstrate the parametric optimization in sensitivity and resolution of our system

Metadata Enhancement Through Name Authority in the UNT Digital Library

This book chapter contains a case study discussing the University of North Texas Libraries' implementation of name authority control in the UNT Digital Library as a means of increasing metadata records' quality and consistency, and of improving end-user retrieval

Integrating Image-Based Research Datasets into an Existing Digital Repository Infrastructure

Article on integrating image-based research datasets into an existing digital repository infrastructure

Exploratory Analysis of Metadata Edit Events in the UNT Libraries' Digital Collections

This paper discusses an exploratory analysis of metadata edit events in the University of North Texas (UNT) Libraries' digital collections

Experiments in Operationalizing Metadata Quality Interfaces: A Case Study at the University of North Texas Libraries

Paper presented at the 2018 International Conference on Dublin Core and Metadata Applications Initiative (DCMI). This paper describes work underway at the University of North Texas (UNT) Libraries to design and implement interfaces and tools for analyzing metadata quality in their local metadata editing environment

An Exploratory Study of the Description Field in the Digital Public Library of America

This paper presents results of an exploratory, quantitative analysis regarding the application of a free-text Description metadata element and data values associated with this element within aggregated metadata harvested from the Digital Public Library of America (DPLA)

Implementing Name Authority Control into Institutional Repositories: A Staged Approach

Paper written for the 2013 Open Repositories conference about the implementation of name authority in the UNT Digital Library

An Exploratory Analysis of Subject Metadata in the Digital Public Library of America

Paper describing an analysis of subject representation in the Digital Public Library of America (DPLA), an aggregate digital library containing more than 8 million item-level metadata records at the time of the study. The findings provide information about the minimum, maximum, and average number of subjects in records from different hubs and hub types, as well as the distribution of unique subject terms across the entire collection

Knowledge Representation and Subject Access in ETDs: Analysis of Creators’ and Users’ Assumptions and Expectations

This paper analyzes the relationship between subject terms -- both authorized terms from controlled vocabularies and free-text keywords -- used to succinctly describe the content of the electronic theses and dissertations (ETDs) and the search terms entered by users to discover and access the ETDs. Identification of search terms and comparison of search results with subject terms used in describing ETDs provides a basis for assessing the relative usefulness of controlled-vocabulary subject terms supplied by professional indexers and free-text keywords supplied by authors of ETDs in facilitating access to ETDs. Arguably, there has been a shift in the way users search, access, and use information resources