Electroweak physics: search for zz and zw production in p anti-p collisions at s**(1/2) = 1.96 tev (open access)

Electroweak physics: search for zz and zw production in p anti-p collisions at s**(1/2) = 1.96 tev

We present a search for ZZ and ZW vector boson pair production in p{bar p} collisions at {radical}s = 1.96 TeV using the leptonic decay channels ZZ {yields} llvv, ZZ {yields} lll'l' and ZW {yields} lll'v. In a data sample corresponding to an integrated luminosity of 194 pb{sup -1} collected with the Collider Detector at Fermilab, 3 candidate events are found with an expected background of 1.0 {+-} 0.2 events. We set a 95% confidence level upper limit of 15.2 pb on the cross section for ZZ plus ZW production, compared to the standard model prediction of 5.0 {+-} 0.4 pb.
Date: May 18, 2005
Creator: Acosta, D.
Object Type: Report
System: The UNT Digital Library
Role of Double-Porosity Dual-Permeability Models for Multi-Resonance Geomechanical Systems (open access)

Role of Double-Porosity Dual-Permeability Models for Multi-Resonance Geomechanical Systems

It is known that Biot's equations of poroelasticity (Biot 1956; 1962) follow from a scale-up of the microscale equations of elasticity coupled to the Navier-Stokes equations for fluid flow (Burridge and Keller, 1981). Laboratory measurements by Plona (1980) have shown that Biot's equations indeed hold for simple systems (Berryman, 1980), but heterogeneous systems can have quite different behavior (Berryman, 1988). So the question arises whether there is one level--or perhaps many levels--of scale-up needed to arrive at equations valid for the reservoir scale? And if so, do these equations take the form of Biot's equations or some other form? We will discuss these issues and show that the double-porosity dual-permeability equations (Berryman and Wang, 1995; Berryman and Pride, 2002; Pride and Berryman, 2003a,b; Pride et al., 2004) play a special role in the scale-up to equations describing multi-resonance reservoir behavior, for fluid pumping and geomechanics, as well as seismic wave propagation. The reason for the special significance of double-porosity models is that a multi-resonance system can never be adequately modeled using a single resonance model, but can often be modeled with reasonable accuracy using a two-resonance model. Although ideally one would prefer to model multi-resonance systems using the correct numbers, …
Date: May 18, 2005
Creator: Berger, E. L.
Object Type: Article
System: The UNT Digital Library
Iraq:  U.S. Military Operations (open access)

Iraq: U.S. Military Operations

None
Date: May 18, 2005
Creator: Bowman, Steven R.
Object Type: Report
System: The UNT Digital Library
Military Base Closure:  Socioeconomic Impacts (open access)

Military Base Closure: Socioeconomic Impacts

None
Date: May 18, 2005
Creator: Cowan, Tadlock & Webel, Baird
Object Type: Report
System: The UNT Digital Library
[Letter from Terry Everett, Michael R. Turner, and Mike Rogers to Anthony Principi - May 18, 2005] (open access)

[Letter from Terry Everett, Michael R. Turner, and Mike Rogers to Anthony Principi - May 18, 2005]

Letter from Terry Everett, Michael R. turner, and Mike Rogers to Anthony Principi with an attached letter from Raymond F. DuBois to Duncan Hunter. DuBois letter states that public opinion and community quality of life will not be taken into account for the base realignment process.
Date: May 18, 2005
Creator: Everett, Terry, 1937-; Turner, M. R. (Michael R.) & Rogers, Mike, 1963-
Object Type: Letter
System: The UNT Digital Library
The Federal Networking and Information Technology Research and Development Program: Funding Issues and Activities (open access)

The Federal Networking and Information Technology Research and Development Program: Funding Issues and Activities

None
Date: May 18, 2005
Creator: Figliola, Patricia Moloney
Object Type: Report
System: The UNT Digital Library
Measurement of the dispersion of thermal ion-acoustic fluctuations in high-temperature laser plasmas using multiple wavelength Thomson-scattering (open access)

Measurement of the dispersion of thermal ion-acoustic fluctuations in high-temperature laser plasmas using multiple wavelength Thomson-scattering

The dispersion of ion-acoustic fluctuations has been measured using a novel technique that employed multiple color Thomson scattering to measure the frequency spectrum for two separate thermal ion-acoustic fluctuations with significantly different wave vectors. The plasma fluctuations are shown to become dispersive with increasing electron temperature. They demonstrate that this technique allows a time resolved local measurement of electron density and temperature in inertial confinement fusion plasmas.
Date: May 18, 2005
Creator: Froula, D H; Davis, P; Divol, L; Ross, J S; Meezan, N; Price, D et al.
Object Type: Article
System: The UNT Digital Library
Modeling Initiation in Exploding Bridgewire Detonators (open access)

Modeling Initiation in Exploding Bridgewire Detonators

One- and two-dimensional models of initiation in detonators are being developed for the purpose of evaluating the performance of aged and modified detonator designs. The models focus on accurate description of the initiator, whether it be an EBW (exploding bridgewire) that directly initiates a high explosive powder or an EBF (exploding bridgefoil) that sends an inert flyer into a dense HE pellet. The explosion of the initiator is simulated using detailed MHD equations of state as opposed to specific action-based phenomenological descriptions. The HE is modeled using the best available JWL equations of state. Results to date have been promising, however, work is still in progress.
Date: May 18, 2005
Creator: Hrousis, C A
Object Type: Article
System: The UNT Digital Library
How an antenna launches its input power into radiation: thepattern of the Poynting vector at and near an antenna (open access)

How an antenna launches its input power into radiation: thepattern of the Poynting vector at and near an antenna

In this paper I first address the question of whether theseat of the power radiated by an antenna made of conducting members isdistributed over the "arms" of the antenna according to $ - \bf J \cdotE$, where $\bf J$ is the specified current density and $\bf E$ is theelectric field produced by that source. Poynting's theorem permits only aglobal identification of the total input power, usually from a localizedgenerator, with the total power radiated to infinity, not a localcorrespondence of $- \bf J \cdot E\ d^3x $ with some specific radiatedpower, $r^2 \bf S \cdot \hat r\ d\Omega $. I then describe a modelantenna consisting of two perfectly conducting hemispheres of radius\emph a separated by a small equatorial gap across which occurs thedriving oscillatory electric field. The fields and surface current aredetermined by solution of the boundary value problem. In contrast to thefirst approach (not a boundary value problem), the tangential electricfield vanishes on the metallic surface. There is no radial Poyntingvector at the surface. Numerical examples are shown to illustrate how theenergy flows from the input region of the gap and is guided near theantenna by its "arms" until it is launched at larger \emph r/a into theradiation pattern …
Date: May 18, 2005
Creator: Jackson, J.D.
Object Type: Article
System: The UNT Digital Library
Kuwait:  Post-Saddam Issues and U.S. Policy (open access)

Kuwait: Post-Saddam Issues and U.S. Policy

With the conventional military threat from Saddam Hussein’s Iraq removed, Kuwait has begun breaking the longstanding political deadlock over leadership and political and economic reform. However, Kuwaiti leaders are facing a new set of concerns posed by continuing instability in Iraq. This report will be updated as developments warrant. See also CRS Report RL31533, The Persian Gulf States: Postwar Issues for U.S. Policy, 2004.
Date: May 18, 2005
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Revenue Reconciliation Directives to the Senate Finance Committee in Congressional Budget Resolutions (open access)

Revenue Reconciliation Directives to the Senate Finance Committee in Congressional Budget Resolutions

During the more than 30 years that the congressional budget process has been in effect, the Senate Finance Committee has been subject to revenue reconciliation directives in a budget resolution on 18 occasions. Nine instances involved directives to reduce revenues, while the remaining nine instructed the committee to increase revenues. In all but three of the 18 instances, revenue reconciliation directives to the committee were accompanied by spending reconciliation directives.
Date: May 18, 2005
Creator: Keith, Robert
Object Type: Report
System: The UNT Digital Library
Spending Reconciliation Directives to the Senate Finance Committee in Congressional Budget Resolutions (open access)

Spending Reconciliation Directives to the Senate Finance Committee in Congressional Budget Resolutions

During the more than 30 years that the congressional budget process has been in effect, the Senate Finance Committee has been subject to spending reconciliation directives in a budget resolution on 16 occasions. Fourteen instances involved directives to reduce spending, while the remaining two, for FY2002 and FY2004, instructed the committee to increase outlays (to accommodate related tax policy changes). In every instance but one, for FY1982, spending reconciliation directives to the committee were accompanied by revenue reconciliation directives.
Date: May 18, 2005
Creator: Keith, Robert & Heniff, Bill, Jr.
Object Type: Report
System: The UNT Digital Library
India-U.S. Relations (open access)

India-U.S. Relations

This report briefs the context of India - U.S relations and also discusses its bilateral issues
Date: May 18, 2005
Creator: Kronstadt, K. Alan
Object Type: Report
System: The UNT Digital Library
Structure/Function Analysis of Protein-Protein Interactions and Role of Dynamic Motions in Mercuric Ion Reductase (open access)

Structure/Function Analysis of Protein-Protein Interactions and Role of Dynamic Motions in Mercuric Ion Reductase

This report summarizes the activities and findings of our structure/function studies of the bacterial detoxification enzyme mercuric ion reductase. The objectives of the work were to obtain crystal structure information for the catalytic core of this enzyme, use the information to investigate the importance of specific parts of the enzyme to its function, and investigate the role of one domain of the enzyme in its function within cells. We describe the accomplishments towards these goals including many structures of the wild type and mutant forms of the enzyme that highlight its interactions with its Hg(II) substrate, elucidation of the role of the N-terminal domain in vitro and in vivo, and elucidation of the roles of at two conserved residues in the core in the mechanism of catalysis.
Date: May 18, 2005
Creator: Miller, Susan M.
Object Type: Report
System: The UNT Digital Library
The Quasi Government: Hybrid Organizations with Both Government and Private Sector Legal Characteristics (open access)

The Quasi Government: Hybrid Organizations with Both Government and Private Sector Legal Characteristics

None
Date: May 18, 2005
Creator: Moe, Ronald C. & Kosar, Kevin R.
Object Type: Report
System: The UNT Digital Library
Amber Alert Program Technology (open access)

Amber Alert Program Technology

This report discusses provisions in the National Intelligence Reform Act of 2004 to test Amber Alert network technology for use in expanding the Emergency Alert System (EAS). The Amber Alert network utilizes a combination of technologies, such as highway messages boards, the Internet, and text messaging, to ensure the swift recovery of abducted children.
Date: May 18, 2005
Creator: Moore, Linda K.
Object Type: Report
System: The UNT Digital Library
Korea: U.S.-Korean Relations - Issues for Congress (open access)

Korea: U.S.-Korean Relations - Issues for Congress

None
Date: May 18, 2005
Creator: Niksch, Larry A.
Object Type: Report
System: The UNT Digital Library
Final Technical Report on the Project Time Evolution of Capsule rhoR and Proton Emission Imaging of Core Structure (open access)

Final Technical Report on the Project Time Evolution of Capsule rhoR and Proton Emission Imaging of Core Structure

None
Date: May 18, 2005
Creator: Petrasso, Richard D.; Li, Chikang; Seguin, Fredrick H. & Frenje, Johan
Object Type: Report
System: The UNT Digital Library
China: Economic Sanctions (open access)

China: Economic Sanctions

This report discusses a list of economic sanctions that the United States currently maintains against China. The influence of Congress on U.S. policy toward China, once significant because so much hung on the annual possibility that favorable trade terms could be suspended, has more recently been diffused. Sanctions that remain in place today can all be modified, eased, or lifted altogether by the President, without congressional input.
Date: May 18, 2005
Creator: Rennack, Dianne E.
Object Type: Report
System: The UNT Digital Library
REFINERY INTEGRATION OF BY-PRODUCTS FROM COAL-DERIVED JET FUELS (open access)

REFINERY INTEGRATION OF BY-PRODUCTS FROM COAL-DERIVED JET FUELS

This report summarizes the accomplishments toward project goals during the first six months of the second year of the project to assess the properties and performance of coal based products. These products are in the gasoline, diesel and fuel oil range and result from coal based jet fuel production from an Air Force funded program. Specific areas of progress include generation of coal based material that has been fractionated into the desired refinery cuts, acquisition and installation of a research gasoline engine, and modification of diesel engines for use in evaluating diesel produced in the project. The desulfurization of sulfur containing components of coal and petroleum is being studied so that effective conversion of blended coal and petroleum streams can be efficiently converted to useful refinery products. Equipment is now in place to begin fuel oil evaluations to assess the quality of coal based fuel oil. Coal samples have procured and are being assessed for cleaning prior to use in coking studies.
Date: May 18, 2005
Creator: Rudnick, Leslie R.; Boehman, Andre; Song, Chunshan; Miller, Bruce & Mitchell, Gareth
Object Type: Report
System: The UNT Digital Library
First Data on Lake Level Changes in Northeastern Siberia during the Postglacial Time (open access)

First Data on Lake Level Changes in Northeastern Siberia during the Postglacial Time

Moraines of the Tyellakh Group [1] (QIII{sub 2-4}) preserved in river valleys of the northeastern Kolyma River basin indicate development of cirque-valley glaciers originating in the Kilgan Mountains located at the northeastern periphery of the Kolyma Ridge that separates drainage basins of the Sea of Okhotsk and Kolyma River. Moraines host lakes with a length of up to 1-5 km and a relatively small width depending on the valley bottom dimension. The study of lacustrine sediments, their bed-by-bed palynological analysis, and radiocarbon dating provided the first information on lake levels during the final glacial stage of the Late Pleistocene, as well as the Pleistocene-Holocene boundary and Holocene, for the upper reaches of the Kolyma River.
Date: May 18, 2005
Creator: Shilo, N. A.; Anderson, P. M.; Brown, T. A.; Lozhkin, A. V.; Pakhomov, A. Y. & Solomatkina, T. B.
Object Type: Article
System: The UNT Digital Library
Liner Compression of a MAGO / Inverse-Pinch Configuration (open access)

Liner Compression of a MAGO / Inverse-Pinch Configuration

In the ''metal liner'' approach to Magnetized Target Fusion (MTF), a preheated magnetized plasma target is compressed to thermonuclear temperature and high density by externally driving the implosion of a flux conserving metal enclosure, or liner, which contains the plasma target. As in inertial confinement fusion, the principle fusion fuel heating mechanism is pdV work by the imploding enclosure, called a pusher in ICF. One possible MTF target, the hard-core diffuse z pinch, has been studied in MAGO experiments at VNIIEF, and is one possible target being considered for experiments on the Atlas pulsed power facility. Numerical MHD simulations show two intriguing and helpful features of the diffuse z pinch with respect to compressional heating. First, in two-dimensional simulations the m=0 interchange modes, arising from an unstable pressure profile, result in turbulent motions and self-organization into a stable pressure profile. The turbulence also gives rise to convective thermal transport, but the level of turbulence saturates at a finite level, and simulations show substantial heating during liner compression despite the turbulence. The second helpful feature is that pressure profile evolution during compression tends towards improved stability rather than instability when analyzed according to the Kadomtsev criteria. A liner experiment is planned …
Date: May 18, 2005
Creator: Siemon, R. E.; Atchison, W. L.; Awe, T.; Bauer, B. S.; Buyko, A. M.; Chernyshev, V. K. et al.
Object Type: Article
System: The UNT Digital Library
Expanded Access to Financial Services Act (open access)

Expanded Access to Financial Services Act

None
Date: May 18, 2005
Creator: Smale, Pauline
Object Type: Report
System: The UNT Digital Library
Iran's Nuclear Program: Recent Developments (open access)

Iran's Nuclear Program: Recent Developments

Since 2003, the International Atomic Energy Agency (IAEA) inspections of Iran’s nuclear program have revealed significant undeclared activities with potential applications for nuclear weapons, including uranium enrichment facilities and plutonium separation efforts. Also since 2003, Iran has been negotiating with Germany, France, and the UK (EU-3) for a wide range of assistance in exchange for a halt to such activities. Yet, most evidence indicates that Iran has never completely suspended its enrichment activities, raising the question of whether Iran is buying time to build nuclear weapons.
Date: May 18, 2005
Creator: Squassoni, Sharon
Object Type: Report
System: The UNT Digital Library