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The use of drilling by the U.S. Antarctic program

Description: This report on drilling in the Antarctic has been prepared by the U.S. National Science Foundation (NSF) to assist principal investigators and others in complying with the National Environmental Policy Act (NEPA) and the Antarctic Treaty of 1961. Implementing regulations for NEPA are spelled out in 40 CFR 1500-1508. Environmental protection under the Antarctic Treaty is addressed in the Protocol on Environmental Protection to the Antarctic Treaty (hereafter referred to as the Protocol), which w… more
Date: August 1, 1994
Creator: Wade, M. C.; Webb, J. W. & Hedberg, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Seismic response of a base-isolated building with high damping, low shear modulus elastomeric bearings

Description: This paper deals with an investigation of seismic responses of a base-isolated building subjected to actual earthquakes. The isolation system consists of six medium shape factor, high damping, low shear modulus bearings designed by ANL and manufactured in the United Kingdom. The objective is two-fold: (1) to study the effectiveness of the isolated bearings through responses of the test building under actual earthquakes, and (2) to validate the 3-D SISEC (Seismic Isolation System Evaluation Code… more
Date: August 1, 1993
Creator: Wang, C. Y.; Chang, Y. W.; Kulak, R. F.; Seidensticker, R. W.; Kuroda, T. & Kobatake, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The activity of cobalt and silicon in the Co - Si system with special focus on the {alpha} - Co solid solution

Description: The activities of cobalt and silicon at 1463 K have been determined across the whole composition range in the Co - Si system, including the {alpha} - Co solid solution, for which no activity data were previously available. Simple and reactive Knudsen effusion mass spectroscopy employed in this work were shown to successfully overcome problems normally encountered in studying high-temperature solid binary systems, such as slow equilibration and low partial pressures of the components. The compos… more
Date: August 1, 1997
Creator: Lexa, D.; Kematick, R. J. & Myers, C. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microbial ecology of terrestrial Antarctica: Are microbial systems at risk from human activities?

Description: Many of the ecological systems found in continental Antarctica are comprised entirely of microbial species. Concerns have arisen that these microbial systems might be at risk either directly through the actions of humans or indirectly through increased competition from introduced species. Although protection of native biota is covered by the Protocol on Environmental Protection to the Antarctic Treaty, strict measures for preventing the introduction on non-native species or for protecting micro… more
Date: August 1, 1996
Creator: White, G.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Ethics Gaming Survey Results

Description: Dataset generated for a National Science Foundation grant project, "EAGER: Prototyping a Virtue Ethics Game." These files contain the research results of the pre-test and post-test surveys.
Date: August 29, 2013
Creator: Oppong, Joseph R.
Item Type: Refine your search to only Dataset
Partner: UNT College of Arts and Sciences
open access

Patterns and Drivers of Intra-Urban Heat and Pollution Island Interactions

Description: Data management plan for the grant, "Patterns and Drivers of Intra-Urban Heat and Pollution Island Interactions." Research on the urban heat island (UHI) and urban pollution island (UPI) effects at the neighborhood scale by integrating sensor networks, earth observations, and geospatial analysis. The spatial patterns and intra-annual variability of UHI-UPI interactions and model the urban form drivers controlling UHI-UPI interaction variability will also be examined. These data will be analyzed… more
Date: 2021-08-01/2025-01-31
Creator: Liang, Lu & Ponette-González, Alexandra G.
Item Type: Refine your search to only Text
Partner: UNT College of Liberal Arts & Social Sciences
open access

Metal Oxynitrides: Tuning Metal-N and Metal-O Interactions for Improved Electrocatalytic Properties at the Liquid/Solid Interface

Description: Data management plan for the grant "Metal Oxynitrides: Tuning Metal-N and Metal-O Interactions for Improved Electrocatalytic Properties at the Liquid/Solid Interface." Research investigating the fundamental chemical interactions relevant to the conversion of dinitrogen to ammonia via more energy-efficient routes. The studies will help in understanding the chemical and material factors that are most important for optimizing new materials for ammonia production from dinitrogen, and applications t… more
Date: 2021-08-01/2024-07-31
Creator: Kelber, Jeffry A.; Cundari, Thomas R., 1964- & D'Souza, Francis
Item Type: Refine your search to only Text
Partner: UNT College of Science
open access

Collaborative Research: MRA: Particulates in canopy flowpaths: A missing mass flux at the macrosystem scale?

Description: Data management plan for the grant, "Collaborative Research: MRA: Particulates in canopy flowpaths: A missing mass flux at the macrosystem scale?" This research will investigate a vital, but currently uncharacterized, macrosystem biogeochemical function within forest canopies at the very start of the terrestrial hydrologic cycle: particulate concentration, flux, and composition in rainwaters draining from forest canopies. We will address three major objectives: (1) Estimate the net rainfall (TF… more
Date: 2022-08-01/2027-07-31
Creator: Ponette-González, Alexandra G.
Item Type: Refine your search to only Text
Partner: UNT College of Liberal Arts & Social Sciences
open access

Collaborative Research: Increasing Inclusion and Equity of Minoritized STEM Faculty: Examining the Role of Epistemic Exclusion in Scholar(ly) Evaluation Practices

Description: Data management plan for the grant, "Collaborative Research: Increasing Inclusion and Equity of Minoritized STEM Faculty: Examining the Role of Epistemic Exclusion in Scholar(ly) Evaluation Practices."
Date: 2023-08-01/2028-07-31
Creator: Jones, Martinique K.
Item Type: Refine your search to only Text
Partner: UNT College of Liberal Arts & Social Sciences
open access

CICI: UCSS: Secure Containers in High-Performance Computing Infrastructure

Description: Data management plan for the grant, "CICI: UCSS: Secure Containers in High-Performance Computing Infrastructure." Ensuring the security and privacy of high-performance computing (HPC) infrastructures is of utmost importance due to their handling of sensitive data and critical scientific computations. HPC infrastructures commonly employ containers, which provide lightweight and isolated environments for running applications. Nevertheless, containers in HPC infrastructures encounter security chal… more
Date: 2023-08-01/2026-07-31
Creator: Ji, Yuede
Item Type: Refine your search to only Text
Partner: UNT College of Engineering
open access

Studies of heavy-ion reactions and transuranic nuclei

Description: The development of the cold-fusion'' episode is reviewed. Ongoing studies of compound-nucleus formation and decay via the neutron multiplicity distribution confirm the validity of conventional statistical theory. The excitation energy partition in near-barrier damped {sup 58}Ni + {sup 208}Pb collisions is found to be largely independent of the direction of net mass transfer, supporting a diffusion-like nucleon-exchange mechanism. Exclusive experiments on the heavy reaction systems {sup 197}Au +… more
Date: August 1, 1991
Creator: Schroeder, W. U. & Huizenga, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantum cosmology on the worldsheet

Description: Two-dimensional quantum gravity coupled to conformally invariant matter central c > 25 provides a toy model for quantum gravity in four dimensions. Two-dimensional quantum cosmology can thus be studied in terms of string theory in background fields. The large scale cosmological constant depends on non-linear dynamics in the string theory target space and does not appear to be suppressed by wormhole effects. 13 refs.
Date: August 1, 1991
Creator: Cooper, A.R.; Susskind, L. & Thorlacius, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Topics in particle physics and cosmology

Description: The Standard Model of particle physics, together with the Big Bang model of the early universe, constitute a framework which encompasses our current understanding of fundamental laws and beginning of our universe. Despite recent speculative trends, quantum field theory remains the theoretical tool of choice for investigating new physics either at high energy colliders, or in the early universe. In this dissertation, several field theoretic phenomena relevant to cosmology or particle physics are… more
Date: August 2, 1991
Creator: Hsu, S.D.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nonminimal t t models of composite Higgs bosons

Description: The relation between infrared-fixed point analysis and underlying fermion models of composite Higgs bosons is studied in a simple two-Higgs-doublet model and in a single-Higgs-doublet model with a singular interaction added. We examine how the infrared-fixed point analysis can be affected by a difference in fundamental interactions of constituents. 12 refs., 3 figs.
Date: August 1, 1990
Creator: Suzuki, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Perturbative QCD signatures of hybrid hadrons in electroproduction at high Q sup 2

Description: In the perturbative domain of quantum chromodynamics (QCD), transverse electroproduction of hybrid baryons is small. Their longitudinal electroproduction has size and scaling behavior like normal baryons. Thus deep inelastic scattering has hybrid resonance peak to background ratio small for the transverse structure function but normal size and constant for the longitudinal one. This signature can test if the Roper resonance is a hybrid. Related high momentum transfer signatures may clarify the … more
Date: August 1, 1991
Creator: Carlson, Carl E. & Mukhopadhyay, Nimai C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electron correlations in semiconductors: Bulk cohesive properties and magnetic-field-induced Wigner crystal at heterojunctions

Description: A correlated wavefunction variational quantum Monte Carlo approach to the studies of electron exchange and correlation effects in semiconductors is presented. Applications discussed include the cohesive and structural properties of bulk semiconductors, and the magnetic-field-induced Wigner electron crystal in two dimensions. Landau level mixing is shown to be important in determining the transition between the quantum Hall liquid and the Wigner crystal states in the regime of relevant experimen… more
Date: August 1, 1992
Creator: Louie, S.G. & Zhu, X.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Decoherence of multimode thermal squeezed coherent states

Description: It is well known that any multimode positive definite quadratic Hamiltonian can be transformed into a hamiltonian of uncoupled harmonic oscillators. Based on this theorem, the multimode thermal squeezed coherent states are constructed in terms of density operators. Decoherence of multimode thermal squeezed coherent states in investigated via the characteristic function and it is shown that the decohered (reduced) states are still thermal squeezed coherent states in general.
Date: August 14, 1992
Creator: Yeh, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Infinite-mode squeezed coherent states and non-equilibrium statistical mechanics (phase-space-picture approach)

Description: The phase-space-picture approach to quantum non-equilibrium statistical mechanics via the characteristic function of infinite- mode squeezed coherent states is introduced. We use quantum Brownian motion as an example to show how this approach provides an interesting geometrical interpretation of quantum non-equilibrium phenomena.
Date: August 14, 1992
Creator: Yeh, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Melt processing of the Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} superconductor in oxygen and argon atmospheres

Description: Solidification and subsequent annealing of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub y} (2212) in oxygen and argon atmospheres were investigated in order to identify alternative processing routes for controlling microstructures and superconducting properties. In addition to 2212, several other phases formed on cooling in O{sub 2} and did not disappear upon subsequent annealing. Crystallization in Ar resulted in a divorced eutetic structure of Bi{sub 2}Sr{sub 3-x}Ca{sub x}O{sub y} and Cu{sub 2}O/CuO. T… more
Date: August 1, 1992
Creator: Holesinger, T. G.; Miller, D. J. & Chumbley, L. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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