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An Exploration of the Titrating-Delay Match-to-Sample Procedure with Pigeons

An Exploration of the Titrating-Delay Match-to-Sample Procedure with Pigeons

Date: December 2011
Creator: Friedel, Jonathan E.
Description: The delayed matching‐to‐sample (DMTS) procedure involves the insertion of a delay between the offset of a sample stimulus and the onset of an array of comparison stimuli; one of which is designated as the “correct” match for the sample on each trial. The procedure has served as the base preparation in which the effects of environmental variables on short‐term remembering and is, in many ways, responsible for a refined understanding of the phenomenon. Despite its utility, however, there are a few problems with the DMTS procedure – first, the procedure doesn’t adjust for individual differences and second, the conventional dependent measure, percent of correct trials, is not as sensitive as one might like. The titrating-delay matching to sample (TDMTS) procedure is a variant of the DMTS procedure in which the delays between sample and comparison are adjusted as a function of the subject’s performance. Stable measures of adjusted delay are not only sensitive measures of the performance of interest but they are also automatically tuned to differences across individuals. The study reported here continues our efforts to understand the dynamics of the TDMTS procedure so that it can be used to ask important questions related to short‐term remembering.
Contributing Partner: UNT Libraries
Exploration of Visual, Acoustic, and Physiological Modalities to Complement Linguistic Representations for Sentiment Analysis

Exploration of Visual, Acoustic, and Physiological Modalities to Complement Linguistic Representations for Sentiment Analysis

Access: Use of this item is restricted to the UNT Community.
Date: December 2014
Creator: Pérez-Rosas, Verónica
Description: This research is concerned with the identification of sentiment in multimodal content. This is of particular interest given the increasing presence of subjective multimodal content on the web and other sources, which contains a rich and vast source of people's opinions, feelings, and experiences. Despite the need for tools that can identify opinions in the presence of diverse modalities, most of current methods for sentiment analysis are designed for textual data only, and few attempts have been made to address this problem. The dissertation investigates techniques for augmenting linguistic representations with acoustic, visual, and physiological features. The potential benefits of using these modalities include linguistic disambiguation, visual grounding, and the integration of information about people's internal states. The main goal of this work is to build computational resources and tools that allow sentiment analysis to be applied to multimodal data. This thesis makes three important contributions. First, it shows that modalities such as audio, video, and physiological data can be successfully used to improve existing linguistic representations for sentiment analysis. We present a method that integrates linguistic features with features extracted from these modalities. Features are derived from verbal statements, audiovisual recordings, thermal recordings, and physiological sensors signals. The resulting ...
Contributing Partner: UNT Libraries
An exploration study of the relationship between effectiveness of filial therapy training groups and group cohesion.

An exploration study of the relationship between effectiveness of filial therapy training groups and group cohesion.

Date: May 2009
Creator: Reed, Kelly Layne
Description: This study examined the relationship of group cohesion among heterogeneous and homogeneous groups on individual treatment outcome of child-parent relationship therapy (CPRT). CPRT is a filial therapy model that targets the parent-child relationship as a means for preventing or improving child and/or family problems. This study included 30 parents or caregivers from 9 groups which met for 10 sessions. Participants qualified for this study if their groups ended with at least 3 group members and 2 leaders, all pretest and posttest data on their child between the ages of 2-11 was completed, and if they attended at least 6 of the 10 sessions. Correlation coefficients, t-tests, and effect sizes were calculated. Results demonstrated no statistically significant differences between pretests and posttests on the Child Behavior Checklist (CBCL) for all 30 participants; however, differences in measured effect (η2) between children identified with borderline and clinical behavior problems and children with normal behavior problems suggest that CPRT is more effective among children who demonstrate significant behavior problems. Perceived and observed group cohesion measurements demonstrated no significant difference at the individual outcome level. This finding suggests that group cohesion may not be related to individual outcome. Although there was no significant relationship between ...
Contributing Partner: UNT Libraries
Exploration through Materials and the Transformation of the Commonplace

Exploration through Materials and the Transformation of the Commonplace

Date: May 2001
Creator: Sides, Luke
Description: The challenge of this project was to present subject matter in a way that did not seem common to the viewer. With this goal in mind, I aimed to switch the traditional roles of material and form in order to aesthetically elevate the commonplace. For my proposed project I combined traditional sculptural materials and processes with commonplace subject matter. I took a chance at the beginning of this project by making something that I had been joking about until I realized that this might be an interesting piece. From this point on I made a conscious effort to make whatever popped in my head. Although I am not a literary person, it seems that with this body of work I backed into what I might call "ironical metaphor."
Contributing Partner: UNT Libraries
Explorations: a Composition for Eighteen-Piece Jazz Ensemble

Explorations: a Composition for Eighteen-Piece Jazz Ensemble

Date: May 1992
Creator: Rudnick, Isidore L.
Description: None
Contributing Partner: UNT Libraries
Explorations with optically active, cage-annulated crown ethers.

Explorations with optically active, cage-annulated crown ethers.

Date: May 2003
Creator: Ji, Mingzhe
Description: A variety of optically active macrocyclic crown ethers that serve as "host" systems that are capable of differentiating between enantiomeric "guest" molecules during host-guest complexation have been prepared via incorporation of chiral elements into the crown ring skeleton. The ability of these crown ethers to recognize the enantiomers of guest salts, i.e., (+) a-methyl benzylamine and to transport them enantioselectively in W-tube transport experiments were studied. The ability of these crown ethers to perform as chiral catalysts in an enantioselective Michael addition was studied. The extent of asymmetric induction, expressed in terms of the enantiomeric excess (%ee), was monitored by measuring the optical rotation of the product and comparing to the literature value.
Contributing Partner: UNT Libraries
Explorations with Polycarbocyclic Cage Compounds

Explorations with Polycarbocyclic Cage Compounds

Date: August 1999
Creator: Chong, Hyun-Soon
Description: A variety of novel cage-functionalized pyridyl containing crown ethers have been prepared for use in selective alkali metal complexation studies. A highly preorganized, cage-functionalized cryptand also has been designed and has been synthesized for use as a selective Li+ complexant. The alkali metal picrate extraction profiles of these cage-functionalized crown ethers also have been studied. Novel cage-functionalized diazacrown ethers have been prepared for selective alkali metal complexation studies. Alkali metal picrate extraction experiments have been performed by using this new class of synthetic ionophores to investigate the effects of cage-annulation and the influence of N-pivot lariat sidearms upon their resulting complexation properties. Novel pyridyl containing calix[4]arene receptors were prepared. Analysis of their respective 1H NMR and 13C NMR spectra suggests that calix[4]arene moieties in the ligand occupy the cone conformation. The complexation properties of these host molecules were estimated by performing a series of alkali metal picrate extraction experiments. An optically active cage-functionalized crown ether which contains a binaphthyl moiety as the chiral unit was prepared. The ability of the resulting optically active crown ether to distinguish between enantiomers of guest ammonium ions (i.e., phenylethylamonium and phenylglycinate salts) in transport experiments was investigated. Hexacyclo[11.2.1.02,12.05,10.05,15.010,14]hexadeca-6,8-diene-4,11-dione was prepared from hexacyclo[7.4.2.01,9.03,7.04,14.06,15] pentadeca-10,12-diene-2,8-dione. Unanticipated ...
Contributing Partner: UNT Libraries
An Exploratory Analysis of Judicial Activism in the United States Supreme Court's Nullification of Congressional Statutes

An Exploratory Analysis of Judicial Activism in the United States Supreme Court's Nullification of Congressional Statutes

Date: August 1994
Creator: Keith, Linda Camp
Description: None
Contributing Partner: UNT Libraries
Exploratory Analysis of Metadata Edit Events in the UNT Libraries' Digital Collections

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

Date: 2015
Creator: Tarver, Hannah & Phillips, Mark Edward
Description: This paper discusses an exploratory analysis of metadata edit events in the University of North Texas (UNT) Libraries' digital collections.
Contributing Partner: UNT Libraries
Exploratory Analysis of Metadata Edit Events in the UNT Libraries' Digital Collections [Presentation]

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

Date: September 2, 2015
Creator: Tarver, Hannah
Description: Presentation for the 2015 Dublin Core Metadata Initiative (DCMI) Annual Conference. This presentation discusses an exploratory analysis of metadata edit events in the University of North Texas (UNT) Libraries' digital collections.
Contributing Partner: UNT Libraries