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Results:
1 - 24 of
555
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Europe: Rising Economic Nationalism?
None
Date:
January 18, 2007
Creator:
Aheam, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
The Simplest Double Slit: Interference and Entanglement in Double Photoionization of H2
The wave nature of particles is rarely seen in nature. One reason is their very short de Broglie wavelengths in most situations. However, even with wavelengths close to the size of their surroundings, they couple to their environment, e.g. by gravity, Coulomb interaction, or thermal radiation. These couplings shift the phase of the waves, often in an uncontrolled way, hence yielding varying amounts of decoherence i.e. loss of phase integrity. Decoherence is thought to be a main cause of the transition from quantum to classical behavior. How much interaction is necessary and how big an environment is needed to induce the onset of classical behavior? Here we show that a photoelectron and two protons form a minimum particle/slit system, and that a minimum environment can be no more than a single additional electron. We observe interference 'fringes' in the angular distribution of a single electron and the loss of fringe visibility caused by its Coulomb interaction with a second electron. While, at the same time, the correlated momenta of the entangled electron pair continue to exhibit quantum interference.
Date:
September 18, 2007
Creator:
Akoury , D.; Kreidi, K.; Jahnke , T.; Weber, Th.; Staudte , A.; Schoffler, M. et al.
Object Type:
Article
System:
The UNT Digital Library
PORFLOW TESTING AND VERIFICATION DOCUMENT
The PORFLOW software package is a comprehensive mathematical model for simulation of multi-phase fluid flow, heat transfer and mass transport in variably saturated porous and fractured media. PORFLOW can simulate transient or steady-state problems in Cartesian or cylindrical geometry. The porous medium may be anisotropic and heterogeneous and may contain discrete fractures or boreholes with the porous matrix. The theoretical models within the code provide a unified treatment of concepts relevant to fluid flow and transport. The main features of PORFLOW that are relevant to Performance Assessment modeling at the Savannah River National Laboratory (SRNL) include variably saturated flow and transport of parent and progeny radionuclides. This document involves testing a relevant sample of problems in PORFLOW and comparing the outcome of the simulations to analytical solutions or other commercial codes. The testing consists of the following four groups. Group 1: Groundwater Flow; Group 2: Contaminant Transport; Group 3: Numerical Dispersion; and Group 4: Keyword Commands.
Date:
June 18, 2007
Creator:
Aleman, S
Object Type:
Report
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 22, No. 3, Ed. 1 Thursday, January 18, 2007
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2007
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 25, No. 42, Ed. 1 Thursday, October 18, 2007
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
October 18, 2007
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
The Christian Response to Humanitarian Tragedies - Humanitarian Tragedies: What Response is Needed?
Lecture given Tuesday, September 18, 2007, 9:45 AM at Abilene Christian University: "With the proliferation of para-church organizations, there is a need for communication and coordination among them so that human and material resources are most effectively utilized. Two questions need to be answered: what is needed, and who should go?"
Date:
September 18, 2007
Creator:
Allen, Sid
Object Type:
Sound
System:
The Portal to Texas History
Christian Leaders Benefits Alliance - Providing Needed Benefits for Christian Servants
Lecture given Tuesday, September 18, 2007, 2:00 PM at Abilene Christian University: "A team of experts including congregational leaders, a human resource professional, and a benefits consultant will present the latest efforts to provide nationwide health insurance, retirement plans, and discounts on electricity for churches, ministers and leaders from Christian schools, and non-profit organizations."
Date:
September 18, 2007
Creator:
Allmon, Suzanne; Holifield, Ron; Mullican, Jon; Siburt, Charles & Wright, James
Object Type:
Sound
System:
The Portal to Texas History
Comparing Patterns of Natural Selection Across Species Using Selective Signatures
Comparing gene expression profiles over many different conditions has led to insights that were not obvious from single experiments. In the same way, comparing patterns of natural selection across a set of ecologically distinct species may extend what can be learned from individual genome-wide surveys. Toward this end, we show how variation in protein evolutionary rates, after correcting for genome-wide effects such as mutation rate and demographic factors, can be used to estimate the level and types of natural selection acting on genes across different species. We identify unusually rapidly and slowly evolving genes, relative to empirically derived genome-wide and gene family-specific background rates for 744 core protein families in 30 gamma-proteobacterial species. We describe the pattern of fast or slow evolution across species as the 'selective signature' of a gene. Selective signatures represent a profile of selection across species that is predictive of gene function: pairs of genes with correlated selective signatures are more likely to share the same cellular function, and genes in the same pathway can evolve in concert. For example, glycolysis and phenylalanine metabolism genes evolve rapidly in Idiomarina loihiensis, mirroring an ecological shift in carbon source from sugars to amino acids. In a broader context, …
Date:
December 18, 2007
Creator:
Alm, Eric J.; Shapiro, B. Jesse & Alm, Eric J.
Object Type:
Article
System:
The UNT Digital Library
Evangelism as Conversation - Moving Away From Monologue
Lecture given Tuesday, September 18, 2007, 2:00 PM at Abilene Christian University: "We live in an era where evangelism as monologue is becoming increasingly ineffective. What are the implications for considering evangelism as conversation, and how will this create bridges to non-Christians?"
Date:
September 18, 2007
Creator:
Altrock, Craig
Object Type:
Sound
System:
The Portal to Texas History
When Morality is not Enough - The Church as a Servant Community
Lecture given Tuesday, September 18, 2007, 3:00 PM at Abilene Christian University: "Historically, we have understood the gospel to be about personal salvation rather than about a new community founded on justice and mercy. Come and explore what it means to be the new community."
Date:
September 18, 2007
Creator:
Alvarez, Abel
Object Type:
Sound
System:
The Portal to Texas History
Memory of God and Justice for His World - Every Christian's Call to Action
Lecture given Tuesday, September 18, 2007, 4:00 PM at Abilene Christian University: "The message Micah brings is not what god wants from us, but rather who He wants us to be: everyday Christians who demand social justice for a hurting world."
Date:
September 18, 2007
Creator:
Alvarez, Elizabeth
Object Type:
Sound
System:
The Portal to Texas History
Same-Sign Charginos And Majorana Neutralinos at the LHC
We demonstrate the possibility of studying weakly interacting new particles in weak boson fusion, using the example of supersymmetric same-sign charginos. This signal can establish the existence of Majorana neutralinos and give access to their electroweak couplings. It can be observed over (supersymmetric) QCD backgrounds provided the charginos are light and not too close to the squark mass. We finally show how same-sign fermion production can be distinguished from samesign scalars or vectors arising in other models of new physics.
Date:
June 18, 2007
Creator:
Alwall, Johan; Rainwater, Dave & Plehn, Tilman
Object Type:
Article
System:
The UNT Digital Library
Extreme Poverty, Social Justice, and Social Entrepreneurship - Faithful People Enacting Faithful Solutions, Part 1
Lecture given Tuesday, September 18, 2007, 2:00 PM at Abilene Christian University: "More than a billion people around the world live on less than a dollar a day. How can Christians practice the justice that true religion demands with these poorest of the poor? This session highlights innovative approaches that Micah would love."
Date:
September 18, 2007
Creator:
Ammons, Paul; Brice, Tanya; Clark, Susan & Lynn, Monty
Object Type:
Sound
System:
The Portal to Texas History
Extreme Poverty, Social Justice, and Social Entrepreneurship - Faithful People Enacting Faithful Solutions, Part 2
Lecture given Tuesday, September 18, 2007, 2:00 PM at Abilene Christian University: "More than a billion people around the world live on less than a dollar a day. How can Christians practice the justice that true religion demands with these poorest of the poor? This session highlights innovative approaches that Micah would love."
Date:
September 18, 2007
Creator:
Ammons, Paul; Brice, Tanya; Clark, Susan & Lynn, Monty
Object Type:
Sound
System:
The Portal to Texas History
Rural Education and the Rural Education Achievement Program (REAP): Overview and Policy Issues
None
Date:
January 18, 2007
Creator:
Apling, Richard N.
Object Type:
Report
System:
The UNT Digital Library
Doctoral Recital: 2007-04-18 - Alfredo Arjona, piano
Recital presented at the UNT College of Music Concert Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree
Date:
April 18, 2007
Creator:
Arjona, Alfredo
Object Type:
Sound
System:
The UNT Digital Library
Passive Spectroscopic Diagnostics for Magnetically-confined Fusion Plasmas
Spectroscopy of radiation emitted by impurities and hydrogen isotopes plays an important role in the study of magnetically-confined fusion plasmas, both in determining the effects of impurities on plasma behavior and in measurements of plasma parameters such as electron and ion temperatures and densities, particle transport, and particle influx rates. This paper reviews spectroscopic diagnostics of plasma radiation that are excited by collisional processes in the plasma, which are termed 'passive' spectroscopic diagnostics to distinguish them from 'active' spectroscopic diagnostics involving injected particle and laser beams. A brief overview of the ionization balance in hot plasmas and the relevant line and continuum radiation excitation mechanisms is given. Instrumentation in the soft X-ray, vacuum ultraviolet, ultraviolet, visible, and near-infrared regions of the spectrum is described and examples of measurements are given. Paths for further development of these measurements and issues for their implementation in a burning plasma environment are discussed.
Date:
July 18, 2007
Creator:
B.C. Stratton, M. Bitter, K.W. Hill, D.L. Hillis, and J.T. Hogan
Object Type:
Report
System:
The UNT Digital Library
ENGINEERING EVALUATION OF NITROGEN PURGE FILL STATION
This document is a Engineering/Tools Evaluates for tools used to fill the Cross-Site transfer line encasements with nitrogen.
Date:
January 18, 2007
Creator:
BROWN, M.H.
Object Type:
Report
System:
The UNT Digital Library
The Panola Watchman (Carthage, Tex.), Vol. 135, No. 52, Ed. 1 Wednesday, July 18, 2007
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
July 18, 2007
Creator:
Barlish, Becky
Object Type:
Newspaper
System:
The Portal to Texas History
Electronic Surveillance Modernization Act, as Passed by the House of Representatives
This report summarizes the bill as passed by the House and analyzes the potential impact of its provisions were they to become law.
Date:
January 18, 2007
Creator:
Bazan, Elizabeth B.
Object Type:
Report
System:
The UNT Digital Library
Animal Identification and Meat Traceability
None
Date:
January 18, 2007
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
Humane Treatment of Farm Animals: Overview and Issues
None
Date:
April 18, 2007
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
The Federal Food Safety System: A Primer
None
Date:
June 18, 2007
Creator:
Becker, Geoffrey S. & Porter, Donna V.
Object Type:
Report
System:
The UNT Digital Library
Recent Work on Production of Hot Plasmas and Transport of Hot Electrons
None
Date:
January 18, 2007
Creator:
Beg, F.; Key, M. H.; Mackinnon, A. J.; Macphee, A. G.; Lepape, S.; Patel, P. et al.
Object Type:
Article
System:
The UNT Digital Library