UNT Scholarly Works - 683 Matching Results
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- The Internet and College Students' Motivation to Vote
- This article investigates the impact of the political information available on-line on college students’ motivation to vote. The results illustrate that not only politicians, but educators should be cognizant of this civic engagement process. Schools and teachers of all levels are one the front lines of the battle to create a more informed, more involved citizenry; higher education has a strong influence on motivation to vote.
- An Updating System for the Gridded Population Database of China Based on Remote Sensing, GIS and Spatial Database Technologies
- Describes the development of a Spatial Population Updating System (SPUS) for updating the gridded population database of China based on remote sensing, GIS and spatial database technologies, with a spatial resolution of 1 km by 1 km.
- Technical Memorandum: Lewisville Lake Watershed Protection and Management Strategies
- With a current population of just over half a million and a 2030 projected population of approximately one million, expansion throughout Denton County shows no sign of slowing down (NCTCOG). Increasingly, freshwater resources are also facing increased pressure from this urban expansion. Effective assessment and management techniques are necessary to protect the diversity of ecosystem services found within fluvial ecosystems and to mitigate current and future conditions of environmental stressor amplified by urban development. The use of various spatial analysis techniques in environmental assessment present more expedient, cost effective, and broader ranging methods of evaluation than traditional field techniques. One such novel evaluation technique is the Water Quality Corridor Management (WQCM) model, developed by the University of North Texas in cooperation with the Upper Trinity Regional Water District (UTRWD). The WQCM model is a geospatial database that utilizes GIS and remote sensing techniques to assess and prioritize stream reaches according to their overall health and sustainability. This project assessed the viability of the WQCM model in reviewing the status of stream systems, and ultimately, established an accurate mechanism for evaluating the stream corridor and surface water quality draining into Lewisville Lake, a popular recreation site and drinking water source for the urbanizing Dallas and Fort Worth metropolitan area.
- Auxiliaries and other grammatical categories in Klallam
- This paper describes a close look at the distribution in constructions of the closed class of complex predicate forming stems in Klallam traditionally called 'auxiliaries.'
- Klallam Demonstratives
- This paper updates and expands upon the componential analysis provided by Thompson and Thompson 1071 of the Klallam language's set of demonstrative determiners.
- Klallam from A to B
- This paper describes a typology of paths.
- Serial Verbs and Complex Paths in Klallam
- This article describes and illustrates the construction of complex paths and discusses the place of Klallam in a typology of motion events.
- Spatio-Temporal Distribution of Malaria in Yunnan Province, China
- This article describes the use of GIS techniques to conduct temporal and spatial analyses of both P. vivax and P. falciparum malaria to understand the trend and dynamics of transmission, to identify risk periods and areas, and to determine environmental factors associated with increased risk of malaria.
- Crystal structure of 1,3-bis(hydroxymethyl)-2-oxaadamantane, C₁₁H₁₈O₃
- This article describes the crystal structure of 1,3-bis(hydroxymethyl)-2-oxaadamantane, C₁₁H₁₈O₃.
- Electric Field Enhanced Photoluminescence of CdTe Quantum Dots Encapsulated in Poly (N-Isopropylacrylamide) Nano-Spheres
- This article shows an electric field dependent collapse of the poly(N-isopropylacramide) nanospheres and employs the electric field dependence as a means to adjust the photoluminescence process of the quantum dots in a hybrid material.
- Tamaño De Puesta, Sitios De Nidificación Y éxito Reproductivo Del Caiquén (Chloephaga Picta Gmelin, 1789) en La Reserva De Biosfera Cabo De Hornos, Chile
- This article studies the breeding biology of the Upland Goose (Chloephaga picta) in terms of clutch size, nesting sites, and breeding success as a function of habitat variables on Navarino Island, Cape Horn Biosphere Reserve, Chile.
- Newton’s Method in the Context of Gradients
- This article gives a common theoretical treatment for gradient and Newton type methods for general classes of problems.
- The Neighborhood Effects of Foreclosure
- This article argues that changes in nearby foreclosures reveal changes in neighborhood quality.
- Importing Change: Canadian Competition and the U.S. Floriculture Industry
- This article analyzes the shifting geography of production with respect to the U.S. floriculture industry.
- Estimating the Economic Impact of Universities: The Case of Bowling Green State University
- This article describes the results of an economic impact study of Bowling Green State University, Ohio.
- Is there a monadic authoritarian peace: Authoritarian regimes, democratic transition types and the first use of violent force
- This article examines conflict proneness of authoritarian states and tests whether the monadic democratic peace argument can be extended to explain the conflict behavior of authoritarian states.
- DP1 and Completely Continuous Operators
- This article demonstrates a relationship between the Dunford-Pettis property and the DP1 property with a similar relationship for vector-valued continuous function spaces.
- Toward Greener Carbon Capture Technologies: A Pharmacophore-Based Approach to Predict CO₂ Binding Sites in Proteins
- This article describes the extraction of three-dimensional functional group patterns responsible for binding CO₂ from the few protein-CO₂ complexes that have been characterized by X-ray crystallography.
- Las Estrategias Del Poder Traumatizante De Un Dictador en La Fiesta Del Chivo, De Mario Vargas Llosa
- This article contains an analysis of the Dominican dictator Trujillo's strategies of totalitarian control as portrayed in La fiesta del Chivo.
- The Industrial Geography of Toxic Chemical Generation, Release and Management in Texas
- This article examines overall trends in toxic chemical generation, releases and management in Texas from 1995 to 1999 within the broad context of sustainable industrial production.
- A History of Geography at the University of North Texas
- This article provides a history of the Geography Department at the University of North Texas.
- A Three-Dimensional Functional Assessment of Heart and Vessel Development int he Larva of the Zebrafish (Danio rerio)
- This article describes the use of a three-dimensional integration of the early zebrafish heart and vessels to greatly reduce measurement error of stroke volume and cardiac output and to determine the cross-sectional growth of major vessels in the developing zebrafish larvae.
- What is the Purpose of the Embryonic Heart Beat? or How Facts Can Ultimately Prevail over Physiological Dogma
- This invited perspectives article presents evidence in support of a morphogenic rational for prosynchronotropy (i.e., the heart starts to beat well before convective blood flow is needed for bulk transport).
- Epigenetics and transgenerational transfer: a physiological perspective
- This review discusses how the concepts of epigenetics and maternal effects both overlap with, and are distinct from each other, analyzes examples of existing animal physiological studies based on these concepts, and offers a construct by which to integrate these concepts into the design of future investigations in animal physiology.
- What makes species unique? The contribution of proteins with obscure features
- This article performs a comparative analysis of the predicted proteomes derived from 10 different sequenced genomes, including budding and fission yeast, worm, fly, mosquito, Arabidopsis, rice, mouse, rat, and human.
- Parallel expression evolution of oxidative stress-related genes in fiber from wild and domesticated diploid and polyploid cotton (Gossypium)
- This article studies the evolution of oxidative stress related genes in a single plant cell by conducting comparative expression profiling analyses of the elongated seed trichomes of cotton, using a phylogenetic approach.
- FAUST observations of ultraviolet sources in the directions of NGC 4038-39 and 6752
- This article discusses an analysis of ultraviolet observations with the FAUST shuttle-borne telescope toward the Antennae and NGC 6752 celestial regions resulting in the detection of 46 and 221 candidate sources respectively, for a signal-to-noise ratio of 8.
- Binary Microlensing Events from the MACHO Project
- This article presents the light curves of 21 gravitational microlensing events from the first six years of the MACHO Project gravitational microlensing survey that are likely examples of lensing by binary systems.
- Supernova 2002ap: the first month
- This article reports the results of the first month of an intensive photometric and spectroscopic monitoring campaign of Supernova 2002ap.
- Reddening, Emission-Line, and Intrinsic Absorption Properties in the Narrow-Line Seyfert 1 Galaxy Arakelian 564
- This article uses Hubble Space Telescope UV and optical spectra of the narrow-line Seyfert 1 galaxy Ark 564 to investigate its internal reddening and properties of its emission-line and intrinsic UV absorption gas.
- Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. III. Optical observations and the optical-UV-X-ray connection
- This article presents the results of a 2 year long optical monitoring program of the narrow-line Seyfert 1 galaxy Ark 564.
- Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. I. A Metallicity-Accretion Rate Relationship
- This article presents near-infrared spectroscopic measurements of the Hβ region for a sample of 29 luminous high-redshift quasars.
- Near-Infrared Spectroscopy of High-Redshift Active Galactic Nuclei. II. Disappearing Narrow-Line Regions and the Role of Accretion
- This article presents near-infrared spectroscopic measurements of the Hβ region for a sample of 29 luminous high-redshift quasars, and uses the data to discuss the size and other properties of the narrow-line regions in those sources.
- Erratum: "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies"
- This erratum corrects a computational error affecting the calculation of the intrinsic luminosities of several objects in the article "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies." This does not affect any of the main results of the article.
- The Hard X-Ray Spectral Slope as an Accretion Rate Indicator in Radio-Quiet Active Galactic Nuclei
- This article presents XMM-Newton observations of two luminous and high accretion rate radio-quiet active galactic nuclei at z ~ 2.
- Is There a Metallicity-Luminosity Relationship in Active Galactic Nuclei? The Case of Narrow-Line Seyfert 1 Galaxies
- This article discusses the relationship between metallicity and luminosity in active galactic nuclei by introducing new metallicity measurements for a sample of narrow-line Seyfert 1 galaxies.
- Multiwavelength monitoring of the narrow-line Seyfert 1 galaxy Arakelian 564. II. Ultraviolet continuum and emission-line variability
- This article presents the results of an intensive 2 month campaign of approximately daily spectrophotometric monitoring of the narrow-line Seyfert 1 galaxy Ark 564 with the Hubble Space Telescope.
- Chandra Observations of the Highest Redshift Quasars from the Sloan Digital Sky Survey
- This article presents Chandra observations of 21 z > 4 quasars, including 11 sources at z > 5.
- Complex optical-X-ray correlations in the narrow-line Seyfert 1 galaxy NGC 4051
- This article presents the results of a dense and intensive X-ray and optical monitoring of the narrow-line Seyfert 1 galaxy NGC 4051 carried out in 2000.
- The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei
- This article contains a detailed investigation of moderate- to high-quality X-ray spectra of 10 of the most luminous active galactic nuclei known at z > 4.
- XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755
- This article presents results from the XMM-Newton observations of the highly optically polarized broad absorption line quasar CSO 755.
- Reverberation Mapping of High-Luminosity Quasars: First Results
- This article discusses reverberation mapping of quasars of high luminosity or high redshift.
- The Spectral Energy Distribution and Emission-Line Properties of the Narrow-Line Seyfert 1 Galaxy Arakelian 564
- This article presents the intrinsic spectral energy distribution of the narrow-line Seyfert 1 galaxy Ark 564, constructed with contemporaneous data obtained during a multiwavelength, multisatellite observing campaign in 2000 and 2001.
- Nova Sagittarii 1998 (V4633 Sgr): a permanent superhump system or an asynchronous polar?
- This article reports the results of observations of V4633 Sgr (Nova Sagittarii 1998) during 1998-2000.
- Massive Stars Exploding in a He-Rich Circumstellar Medium -- I. Type Ibn (SN 2006jc-Like) Events
- This article presents new spectroscopic and photometric data of the Type Ibn supernovae 2006jc, 2000er and 2002ao.
- Dust Covering Factor, Silicate Emission, and Star Formation in Luminous QSOs
- This article presents Spitzer IRS low resolution, mid-IR spectra of a sample of 25 high luminosity QSOs at 2 < z < 3.5.
- Optically Selected BL Lacertae Candidates from the Sloan Digital Sky Survey Data Release Seven
- This article presents a sample of 723 optically selected BL Lac candidates from the Sloan Digital Sky Survey Data Release 7 spectroscopic database.
- PAH Emission and Star Formation in the Host of the z ~ 2.56 Cloverleaf QSO
- This article reports the first detection of the 6.2 and 7.7 μm infrared polycyclic aromatic hydrocarbon emission features in the spectrum of a high-redshift QSO, from the Spitzer IRS spectrum of the Cloverleaf lensed QSO.
- The Hard X-Ray Spectrum as a Probe for Black Hole Growth in Radio-Quiet Active Galactic Nuclei
- This article studies the hard X-ray spectral properties of 10 highly luminous radio-quiet active galactic nuclei at z = 1.3-3.2, including new XMM-Newton observations of four of these sources.
- GRB 060505: A Possible Short-Duration Gamma-Ray Burst in a Star-Forming Region at a Redshift of 0.09
- This article reports the discovery of the GRB optical afterglow and observations of its environment using Gemini South, the Hubble Space Telescope, Chandra, Swift, and the Very Large Array.