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A Net Plankton Survey of a Small Perennial Pond

A Net Plankton Survey of a Small Perennial Pond

Date: August 1940
Creator: Legett, Jesse Harrison
Description: This thesis resulted from an examination of Lake Worth plankton in comparison to plankton found in similar bodies of water throughout the United States.
Contributing Partner: UNT Libraries
A Netcentric Scientific Research Repository

A Netcentric Scientific Research Repository

Access: Use of this item is restricted to the UNT Community.
Date: December 2006
Creator: Harrington, Brian
Description: The Internet and networks in general have become essential tools for disseminating in-formation. Search engines have become the predominant means of finding information on the Web and all other data repositories, including local resources. Domain scientists regularly acquire and analyze images generated by equipment such as microscopes and cameras, resulting in complex image files that need to be managed in a convenient manner. This type of integrated environment has been recently termed a netcentric sci-entific research repository. I developed a number of data manipulation tools that allow researchers to manage their information more effectively in a netcentric environment. The specific contributions are: (1) A unique interface for management of data including files and relational databases. A wrapper for relational databases was developed so that the data can be indexed and searched using traditional search engines. This approach allows data in databases to be searched with the same interface as other data. Fur-thermore, this approach makes it easier for scientists to work with their data if they are not familiar with SQL. (2) A Web services based architecture for integrating analysis op-erations into a repository. This technique allows the system to leverage the large num-ber of existing tools by wrapping them ...
Contributing Partner: UNT Libraries
Networked generation youth's information seeking process: An examination of cognitive, affective and physical behaviors and problem solving techniques.

Networked generation youth's information seeking process: An examination of cognitive, affective and physical behaviors and problem solving techniques.

Date: May 2008
Creator: Peterson, Janet Walker
Description: This study investigated the information seeking process of the networked generation youth. Specifically, I examined the cognitive, affective, and physical information seeking behaviors and problem solving techniques adolescent student users of the networked environment utilize to solve information needs. Grounded in the theoretical context of the information seeking process in the networked environment, the research extended the user-centered approach to modeling the information seeking process of networked generation youth. A mixed model research design was used to address the research questions. Phase 1 used an online questionnaire to solicit information from 125 students in Grades 7-12 regarding their understanding and use of networked environments, information seeking skills, and problem solving techniques. Phase 2 observed 12 students, two from each grade level, to gain an understanding into the information seeking process of networked generation youth. Participants completed information seeking scenarios of varying levels of complexity. As the participants completed the scenario, they engaged in talk-aloud verbal protocol to describe and explain their behaviors and techniques as they advanced through their information seeking process. Semi-structured interviews were conducted which provided an opportunity for the participants to clarify their information seeking experience. A profile of students' networked environment knowledge and use in relationship ...
Contributing Partner: UNT Libraries
Networking and Getting Involved Professionally

Networking and Getting Involved Professionally

Date: June 9, 2011
Creator: Hoffman, Starr
Description: This presentation discusses networking and career development. It includes information about becoming involved in professional organizations, attending conferences, creating business cards, and staying in contact with others in the profession.
Contributing Partner: UNT Libraries
Networking of North and West Texas Superintendents

Networking of North and West Texas Superintendents

Date: May 2010
Creator: Barber, Glenn E.
Description: This study examined the professional networking of North and West Texas public school superintendents. It looked at how these superintendents professionally network, use professional organizations in networking, and how they extend opportunities beyond the organizations to gain knowledge and information about their demanding and stressful responsibilities. Lastly, it looked at superintendents in the field on whom others rely for knowledge and understanding. Surveys were mailed out to 443 North and West Texas public schools. Only the superintendents from those districts were asked to complete the survey. This limitation was desired to restrict the population to only the superintendents of schools, thus focusing the study on the professional networking of only superintendents. Three hundred sixty (360) superintendents responded to the survey, a return rate of 81.3%. This research concluded that superintendents professionally network by communicating through monthly meetings, organizational conferences or meetings, or email. Their networks are facilitated through communication, contacts, location, longevity, and organizational associations. These organizations provide the superintendent's primary network contact. The number of contacts in a network is usually a small group of 5 to 9 professionals who are known from longevity in the profession, prior educational positions, similar district size, being located in or near a ...
Contributing Partner: UNT Libraries
Die Neue Lehre: Developing an Online Course in Schenkerian Analysis

Die Neue Lehre: Developing an Online Course in Schenkerian Analysis

Access: Use of this item is restricted to the UNT Community.
Date: August 2001
Creator: Sadoff, Jennifer
Description: With the proliferation of Schenkerian theory in the US, Great Britain, and mainland Europe in the past quarter century, the pedagogy of Schenkerian analysis has become an important issue. Schenker himself was suspicious of textbooks with their tendency for artificial codification and over-simplification; rather, he recognized that his “New Teaching” (“Die neue Lehre”) – as he called it – required a different, more “organic” pedagogical approach that was both personal and yet accessible to a wide audience. New digital technologies and the Internet now have made it possible to disseminate Schenker’s pedagogical approach by adapting interactive techniques of Web-based instruction. Schenker’s “new teaching” was as organic as his theory itself – and as novel in the connections it sought to draw between the individualed disciplines of theory, musicology, composition, and performance. The interactive and multi-media components of Web-based instruction enable us to realize Schenker’s own pedagogical approach to Schenkerian analysis instruction.
Contributing Partner: UNT Libraries
Neurocognitive implications of diabetes on dementia as measured by an extensive neuropsychological battery.

Neurocognitive implications of diabetes on dementia as measured by an extensive neuropsychological battery.

Date: December 2008
Creator: Harris, Rebekah Lynn
Description: Diabetes is a disease with a deleterious pathology that currently impacts 4.5 million individuals within the United States. This study examined the ability of a specific neuropsychological battery to identify and classify dementia type, investigated the impact of diabetes on cognition and analyzed the ability of the memory measures of the 7 Minute Screen (7MS) and the Rey-Osterrieth Recall to correctly categorize dementia type when not used in combination with a full battery. The battery in addition to exhaustive patient history, medical chart review and pertinent tests were used in initial diagnosis. Results indicated the battery was sufficient in the identification and classification of dementia type. Within the sample, diabetes did not appear to significantly impact overall battery results whereby only two measures were minimally affected by diabetes. Finally, the memory measures of the 7MS and the Rey-Osterrieth Recall were sufficient to predict membership into the Alzheimer's (AD) and vascular dementia (VD) groups with 86.4% accuracy. The classification percentage dropped to 68.3% with addition of the mild cognitive impairment category. The full battery correctly classified AD and VD dementia 87.5% and appeared to be the most robust.
Contributing Partner: UNT Libraries
Neurocognitive Variables Underlying Group Performance on a Measure of Effort: The Medical Symptom Validity Test (MSVT)

Neurocognitive Variables Underlying Group Performance on a Measure of Effort: The Medical Symptom Validity Test (MSVT)

Date: December 2008
Creator: Covert, Julie Hart
Description: This study utilized the Medical Symptom Validity Test (MSVT) and a set of standard neuropsychological instruments to determine the underlying construct of the MSVT that accounts for effort in mild traumatic brain injury (mTBI) patients by comparing/contrasting mTBI with dementia and an analog simulation. The results indicate that a common underlying neurocognitive construct (memory) exists between mTBI and dementia patients, which may account for poor effort as measured by the MSVT. Other underlying factors emerged for both groups, though they did not point to a common construct. This finding suggests that the overall effect of brain injury in neurologically impaired groups also impacts effort performance as measured by the MSVT. Similarly impaired performance patterns also emerged between mTBI and dementia groups in sub-groups that failed effort measures. Thus, failed effort tests may be a function of more pronounced deficits in these groups, rather than a function of effort. Finally, although similar effort profiles were noted between mTBI and analog simulators, the analog group was unable to mimic the neurocognitive effects of mTBI.
Contributing Partner: UNT Libraries
Neuromotor and Neurocognitive Functioning in the Prediction of Cognition, Behavior Problems, and Symptoms at Two-year Follow-up in Youth with Schizotypal Personality Disorder

Neuromotor and Neurocognitive Functioning in the Prediction of Cognition, Behavior Problems, and Symptoms at Two-year Follow-up in Youth with Schizotypal Personality Disorder

Access: Use of this item is restricted to the UNT Community.
Date: December 2006
Creator: Greher, Felicia Reynolds
Description: Individuals diagnosed with schizotypal personality disorder (SPD) exhibit patterns of cognitive deficits, neuromotor disturbances, and behavior problems similar to individuals with schizophrenia, and thus SPD is thought to represent one point on the continuum of schizophrenia spectrum disorders (SSDs). Deficits in behavior, cognition, and motor functioning have been implicated as childhood precursors of SSDs and appear to also vary as a function of gender and family history of psychopathology. As such, studies of youth may help in further identification of individuals at risk for SSDs. The current study examined the prospective associations between problem behaviors, neuromotor and neurocognitive functioning, as well as SSD symptoms, at baseline and 2-year follow-up in youth meeting criteria for SPD, other personality disorders, or healthy controls. The neuromotor and neurocognitive measures were able to significantly predict SSD symptoms and behavior problems above and beyond baseline predictors. Overall, the findings provide further support for the role of subcortical motor centers operating together with prefrontal cortical areas in the regulation of higher-order cognitive functioning and in producing the psychiatric features of SSDs. Significant correlations between gender, family history of schizophrenia, and history of head injury with symptoms, behavior, cognition, and motor functioning were also found and highlight ...
Contributing Partner: UNT Libraries
Neuronal Network Analyses in vitro of Acute Individual and Combined Responses to Fluoxetine and Ethanol

Neuronal Network Analyses in vitro of Acute Individual and Combined Responses to Fluoxetine and Ethanol

Date: August 2002
Creator: Xia,Yun
Description: Embryonic murine neuronal networks cultured on microelectrode arrays were used to quantify acute electrophysiological effects of fluoxetine and ethanol. Spontaneously active frontal cortex cultures showed highly repeatable, dose-dependent sensitivities to both compounds. Cultures began to respond to fluoxetine at 3 µM and were shut off at 10-16 µM. EC50s mean ± S.D. for spike and burst rates were 4.1 ± 1.5 µM and 4.5 ± 1.1 µM (n=14). The fluoxetine inhibition was reversible and without effect on action potential wave shapes. Ethanol showed initial inhibition at 20 mM, with spike and burst rate EC50s at 52.0 ± 17.4 mM and 56.0 ± 17.0 mM (n=15). Ethanol concentrations above 100 -140 mM led to cessation of activity. Although ethanol did not change the shape and amplitude of action potentials, unit specific effects were found. The combined application of ethanol and fluoxetine was additive. Ethanol did not potentiate the effect of fluoxetine.
Contributing Partner: UNT Libraries