This dataset contains a sample of 10,000 PDF documents from the usda.gov domain in the End of Term (EOT) 2008 Web Archive. These samples are unlabeled and uncategorized.

This document represents contains information regarding subscriptions purchased by UNT Libraries, along with pricing information for the 2013-14, 2014-15, 2015-16, 2016-17, and 2017-18 fiscal years.

This dataset contains a set of 4,534 PDF files from the UNT Scholarly Works collection, the institutional repository for UNT in the UNT Digital Library.

Charon's Garden Wilderness Area within the Wichita Mountains National Wildlife Refuge in Oklahoma is a landscape that is granted federal protection through the Wilderness Act of 1964. The discourse of wilderness management is influenced by governmental policies and practice which organize knowledge surrounding the natural landscape, like with the formation and semantics of the Wilderness Act. The Wilderness Act establishes characteristics that are designed to monitor and control the landscape and serve as a baseline and criterion for further wilderness preservation. These characteristics render the wilderness space as governable. Conservation management alternatives are identified which bypass the duality of nature from western society suggested by the discourse of environmental policy. These alternatives are understood under two notions of behaviors and perceptions. The project's goal is to uncover wilderness users' recreation behaviors and perceptions of wilderness as a designated space. Through understanding and assessing user's behaviors and perception of wilderness, alternative policies and practices that offer sustainable management practices and recreation opportunities can be developed.

For decades, urban public schools have been plagued by systemic and structural challenges that continue today. Scholars, policymakers, and the general public have pointed to problems of learning in urban schools and to low expectations for urban students' learning, but little attention has been given to how urban students themselves conceptualize learning. This study sought to fill the void by asking a group of urban students about their views of learning. A phenomenographic approach was employed to examine the qualitatively different ways in which 20 urban elementary fifth-grade students expressed their conceptions of learning and of their learning approaches. Consistent with phenomenography, the study was intended to understand the collective expressions of individuals' conceptions regarding a phenomenon, and emphasis was on the mapping of variation across the conceptions. Semi-structured interviews with open-ended questions, conducted individually, elicited the students' conceptions of the meaning of learning and their learning approaches. In a "search for meaning" approach, analyses were based on students' transcribed responses forming a pool of quotations. These quotations were divided first into "what" and "how" categories—"what" is learning and "how" does learning occur—and then into subcategories. The results were a set of categories organized in a two-level hierarchy. The three …

Elemental carbon (EC), a product of incomplete combustion of fossil fuels and biomass, contributes to climate warming and poor air quality. In urban areas, diesel fuel trucks are the main source of EC emissions from mobile sources. After emission, EC is deposited to receptor surfaces via two main pathways: precipitation (wet deposition) and directly as particles (dry deposition). Urban trees may play an important role in removing EC from the atmosphere by intercepting and delivering it directly to the soil. The goal of this research was to quantify the magnitude of EC retention in leaf waxes (in-wax EC) and EC fluxes to the soil via leaf litterfall in the City of Denton, Texas. Denton is a rapidly growing urban location in the Dallas-Fort Worth metropolitan area. A foliar extraction technique was used to determine EC retention in leaf waxes. Foliar samples were collected monthly, from April through July, from pairs of Quercus stellata (post oak, n=10) and Quercus virginiana (live oak, n = 10) trees. Samples were rinsed with water and chloroform in a two-step process to determine EC retained in leaf waxes. A Sunset OC/EC aerosol analyzer was utilized to analyze the EC content of extracts filtered onto quartz-fiber …

A gap exists in education research in the area of online readiness for secondary courses. In the current study, I examined the use of an online readiness assessment to inform students and educators of the necessary skills, aptitudes, and propensities needed for secondary course completion. In this research study, the perceptions of 17 secondary students in a North Texas public school were examined. Using a three-phase design, qualitative demographic surveys, focus groups, and open-ended end-of-course success questionnaires were collected and analyzed. The findings revealed the Revised McVay Online Readiness Assessment beneficial for providing students with information regarding skills needed for their online course success. Students were interested in how prior online experience influences online readiness and successful completion as well as the influence prior expectations of online learning had on online success. In addition, the study revealed the importance of student readiness relating to more specific self-regulatory skills including time-management, metacognitive self-monitoring, and task-strategies. The study results also revealed students found importance in knowing their comfort with online communication. K-12 school system and curriculum leaders may consider and take action to ensure effective curriculum and programs are implemented to achieve the desired results of student online course completion as well …

This research investigates the bio-products/phase change material (PCM) composites for the building envelope application. Bio-products, such as wood and herb, are porous medium, which can be applied in the building envelope for thermal insulation purpose. PCM is infiltrated into the bio-product (porous medium) to form a composite material. The PCM can absorb/release large amount of latent heat of fusion from/to the building environment during the melting/solidification process. Hence, the PCM-based composite material in the building envelope can efficiently adjust the building interior temperature by utilizing the phase change process, which improves the thermal insulation, and therefore, reduces the load on the HVAC system. Paraffin wax was considered as the PCM in the current studies. The building energy savings were investigated by comparing the composite building envelope material with the conventional material in a unique Zero-Energy (ZØE) Research Lab building at University of North Texas (UNT) through building energy simulation programs (i.e., eQUEST and EnergyPlus). The exact climatic conditions of the local area (Denton, Texas) were used as the input values in the simulations. It was found that the EnergyPlus building simulation program was more suitable for the PCM based building envelope using the latent heat property. Therefore, based on the …

In 2016 employers hiring four-year college graduates indicate that 27.8% have deficiencies in written communication. Postsecondary learning objectives should focus on improving specific writing skills like grammar, sentence structure, and vocabulary usage for individual students and monitoring text readability as an overall score to measure learning outcomes. Web-based applications and the tools integrated into them have the potential to serve as a diagnostic solution for analyzing the text readability and writing skills of students. Organization and structuring of Canvas data was required before adding text readability and other writing skills analytics as part of the process to develop diagnostic learning analytics that interprets student writing skills in the learning management system. Decision modeling was used to capture and describe the specifics of literacy improvement decisions for instructors and administrators in a graphical notation and structured format.

This study focuses on the use of American Invention Kits from the Smithsonian Institute in conjunction with a 3D printer. In conjunction with a large dataset from a study funded by the National Science Foundation (NSF), this innovative research focuses on the effect the digital fabrication curriculum unit has on gifted and talented students' knowledge and affinity toward the fields of science, technology, engineering, and mathematics (STEM). Students from two rural middle schools in north-central Texas (N = 190) took part in this quantitative study; the students were divided among four subgroups: gifted-contrast (n = 12), gifted-treatment (n = 8), nongifted-contrast (n = 76), and nongifted-treatment (n = 94). The surveys utilized include the STEM Semantics Survey, TIMSS-Limited, and a knowledge assessment for the specific curriculum unit focused on the solenoid. The STEM Semantics Survey is divided into five subsets. Thirty-two separate one-way repeated measures ANOVAs were performed across the surveys and subgroups. Statistically significant results were found on four comparisons. This research holds implications in the areas of advocating for gifted education, collecting field data, utilizing large datasets, and understanding rural schools.

Auditions often require performance of orchestral excerpts as part of the screening process because orchestral literature contains a wealth of technical challenges at different levels of difficulty; however, many cello teachers still only use etudes, sonatas, and concertos for musical development and technical application and do not use orchestral excerpts as pedagogical tools or daily exercises. This dissertation, in an effort to standardize orchestral excerpts as part of common technical exercises, includes the ten most popular major excerpts selected from thirty audition lists from major orchestras in the United States. Analysis of each excerpt highlights different technical elements, provides short exercises to overcome these challenges, and discusses the aspects of cello playing that will benefit most from practicing orchestral excerpts. In this way, these selections can be played in preparation for auditions, as well as incorporated into daily practice routines.

This study was aimed at understanding the use of technology in early childhood school and home settings as well as its impact on students' social and language development, specifically with children aged four to seven from two schools (Kindergarten and elementary) in Kuwait. The study followed a qualitative design in which the interpretative approach was applied. Non-participant observations were conducted to gather data concerning the actual use of technology in the classrooms, they were followed by interviews with teachers and a group of parents from each classroom. The study used Vygotsky's social development theory as a framework for the analysis of data. The analysis showed limitations in the use of technology in the classroom; teachers identified a need for training to increase their knowledge about how to integrate technology into instruction. Also, the limited availability of up-to-date technology was viewed as a challenge. Teachers and parents agreed that the use of technology may foster social and language development for most students, on the condition that their use is supervised and guided by an adult. However, they also perceived that technology could have a negative impact on the development of students' social development, an area that requires further investigation.

Collaborative writing technologies such as Google Docs is believed to be a helpful tool in supporting the development of constructivist learning environments. However, not much research has been done among special populations outside the United States. This dissertation examines how using google docs can enhance collaborative learning among non-native English-speaking students at a university in Oman. A total of 52 students participated in this study, where they completed a collaborative writing activity using Google Docs. This exploratory study yielded quantitative as well as qualitative data. Interviewees shared their experience of using Google Docs for the collaborative writing activity. The research shows that Google Docs promoted collaborative interactions among students, such as learning from each other and communicating with the teacher. Interestingly, the data indicate that students used alternate social media such as WhatsApp to communicate with their group mates regarding the collaborative writing activity. Overall, the results obtained here confirm that the Google Docs can be used to enhance collaborative learning among non-native English-speaking students.

The Abraham Solvation Parameter Model (ASPM) is a linear, free-energy relationship that can be used to predict various solute properties based on solute-solvent interactions. The ASPM has been used to predict log (K or Cs,organic/Cs,gas) values, as well as log (P or Cs,organic/Cs,water) values for solute transfer into the following organic solvents: 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol, 2-isopropoxyethanol and 2-butoxyethanol. The derived log (K or Cs,organic/Cs,gas) correlations describe the experimental data to within 0.14 log units (or less). The derived log (P or Cs,organic/Cs,water) correlations describe the experimental data to within 0.16 log units (or less). The ASPM has also been used to predict the enthalpies of solvation of organic solutes dissolved in the following solvents: acetic acid, dimethyl carbonate, diethyl carbonate, 1-butanol, 1-pentanol, 1-hexanol. The derived enthalpy of solvation correlations, using the L solute descriptor, describe the experimental data to within 2.50 log units (or less). The derived enthalpy of solvation correlations, using the V solute descriptor, describe the experimental data to within 3.10 log units (or less). Validation analyses have been performed on several of the correlations; and, as long as the solute descriptors fall within the given ranges as reported, the original correlations show good predictive ability for determining …

The increasingly complex world of illicit chemistry has created a need for rapid, selective means of determining the threat posed by new drugs as they are encountered by law enforcement personnel. To streamline this process, the entirety of the problem, from the production of illicit drugs all the way to the final analysis have been investigated. A series of N-alkylated phenethylamine analogues were synthesized in a shotgun method and subjected to direct-infusion analysis. A range of products were detected without the need for time-consuming purification steps, which was extended to novel pharmacological and receptor-binding assays where mass spectrometry is used as a detector. This direct-infusion technique was also applied to studies of methamphetamine and fentanyl production to preemptively determine improvements to common reaction conditions and explore the origins of common impurities. The ability to utilize these rapid techniques directly from the fume hood has also been critically reviewed to highlight gaps in current research and opportunities for improvement. When combined, these studies seek to provide a means for rapid, simplified analysis of illicit drugs to improve the quality of data and dramatically increase throughput.

This poster describes a project to create a free, open-access, web-based curriculum designed to educate medical students and residents on how to give compassionate care to disadvantaged populations who are in great need of consistent, stigma-free, and socially informed health care.

A gold standard measurement does not exist to assess fatigue symptoms across patient populations. Current tools only consist of self-report measures that may not assess fatigue objectively. The National Institutes of Health-Brief Fatigue Inventory (NIH-BFI) is a clinician-administered instrument developed as a more objective assessment of fatigue symptoms. This study assessed the NIH-BFI's validity in diverse clinical populations, which included patients diagnosed with a mood disorder, Parkinson's disease, cancer, and healthy controls. Results suggest good criterion-related and convergent validity for the NIH-BFI. Results also indicate significant differences in fatigue severity between cohorts. Moreover, the data also suggest significant differences among groups in depression, anxiety, pain catastrophizing, sleep quality, global mental and physical health, and cognitive functioning. This study proposes that the NIH-BFI is a valid clinician-administered measure of fatigue that can be administered in multiple clinical populations.

Biological emergency response planning plays a critical role in protecting the public from possible devastating results of sudden disease outbreaks. These plans describe the distribution of medical countermeasures across a region using limited resources within a restricted time window. Thus, the ability to determine that such a plan will be feasible, i.e. successfully provide service to affected populations within the time limit, is crucial. Many of the current efforts to validate plans are in the form of live drills and training, but those may not test plan activation at the appropriate scale or with sufficient numbers of participants. Thus, this necessitates the use of computational resources to aid emergency managers and planners in developing and evaluating plans before they must be used. Current emergency response plan generation software packages such as RE-PLAN or RealOpt, provide rate-based validation analyses. However, these types of analysis may neglect details of real-world traffic dynamics. Therefore, this dissertation presents Validating Emergency Response Plan Execution Through Simulation (VERPETS), a novel, computational system for the agent-based simulation of biological emergency response plan activation. This system converts raw road network, population distribution, and emergency response plan data into a format suitable for simulation, and then performs these simulations …

his dissertation advocates that value and its creation are often misunderstood concepts since both lack robust comprehensive conceptual foundations from which to advance rigorous theoretical development and analysis. Furthermore, this dissertation characterized value as the subjective assessment of the total worth of benefits received for the price paid or costs, i.e. money, time, energy, etc. The purpose of this dissertation was to conduct a holistic examination of value through the lens of service-dominant logic (S-D) and several historical economic periods of thought. I conducted a comprehensive S-D literature review in conjunction with a conceptual Boardman Soft Systems Methodology to develop a systemigram that captured the most critical S-D concepts and interrelationships to clarify its purpose and future research opportunities. During this process, value was recategorized and simplified into five primary dimensions, i.e. nature, perspectives, measures, storage, and creation. I employed Maslow's hierarchy of needs theory to illustrate that value at the lowest level of abstraction is the efficient satisfaction of human needs. I also investigated value creation and introduced a comprehensive value creation conceptual framework. Value creation is seen as a continuum of activity of key processes, i.e. value co-production, value in exchange, and value co-creation, and key procedural elements, …

Presentation delivered at the 2018 Louisiana Virtual Academic Library Conference. This presentation describes the University of North Texas Libraries' multi-year effort to improve vendor relations by proactively preventing problems and by responding effectively to new situations as they arise.

Presentation for the 2018 Electronic Resources & Libraries Annual Conference. This presentation discusses how you can advocate for your library while maintaining vendor relationships.

Presentation delivered at the 2018 Cross Timbers Library Collaborative Annual Conference. This presentation describes the University of North Texas Libraries' multi-year effort to improve vendor relations by proactively preventing problems and by responding effectively to new situations as they arise.

On May 4, 2018, a recognition ceremony was held for the LEAP (Library Education for the U.S. Affiliated Pacific) II scholars, who earned their Master's in Library Science degree from UNT. Video messages were sent to the students by their UNT professors who taught them at the Institutes in Hawaii. This short video recording is from Dr. Daniel Alemneh, congratulating the LAEP-II students who now join the graduates from the LEAP I cohort as the only indigenous librarians in the U.S. Affiliated Pacific Islands.

Today linguistic hybridity is often conceptualized as translanguaging. The present study of translanguaging was a linguistic ethnography, which meant investigating cultural issues as well as linguistic practices. The focus was on bilingual speakers of Vietnamese and English, two "named" languages that differ considerably in morphology, syntax, and orthography. This study, conducted over four and a half months, was situated in the Vietnamese Student Organization of a U.S. university, and it included 37 participants. The research was intended to answer two questions: what forms of translanguaging did these bilinguals use? and what reasons did they provide for instances of translanguaging? In capturing the language use of this community, my role was participant-observer, which entailed observing and audio-recording conversations in three kinds of settings: group meetings, social gatherings, and Facebook communications. Additional insights came from discourse-based interviews, focused on instances of translanguaging by 10 individuals. In the group meetings and Facebook conversations, it was conventional for the major language to be English, whereas in the social gatherings it was Vietnamese. My attention in analyzing these interactions was on patterns of translanguaging that occurred within sentences and those occurring outside sentence boundaries. Overall, most translanguaging occurred intra-sententially, as single words from one language …