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531 Matching Results
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ISG 18 Minutes 30 January 2004
Disregard Restriction Header and Footer - ISG 18 Minutes 30 January 2004
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
ISG 17 Minutes 9 January 2004
Disregard Restriction Header and Footer - ISG 17 Minutes 9 January 2004
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
ISG 16 Minutes 12 December 2003
Disregard Restriction Header and Footer - ISG 16 Minutes 12 December 2003
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
ISG 15 Minutes 21 November 2003
Disregard Restriction Header and Footer - ISG 15 Minutes 21 November 2003
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
ISG 14 Minutes 10 October 2003
Disregard Restriction Header and Footer - ISG 14 Minutes 10 October 2003
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
Memorandum for the Record - Certification of DISN PoP - Additional Navy Location Data dtd 28 Mar 2005
Memorandum for the Record - Certification of DISN PoP - Additional Navy Location Data dtd 28 Mar 2005.
Date:
October 17, 2005
Creator:
United States. Department of Defense.
Object Type:
Text
System:
The UNT Digital Library
Technical Analysis Other - 1 of 2
Technical Analysis Other - 1 of 2
Date:
October 17, 2005
Creator:
United States. Defense Base Closure and Realignment Commission.
Object Type:
Text
System:
The UNT Digital Library
Bahrain: Reform, Security, and U.S. Policy
After instability during the late 1990s, Bahrain undertook substantial political reforms, but the Shiite majority continues to simmer over the Sunni-led government's perceived manipulation of laws and regulations to maintain its grip on power. Bahrain's stability has long been a key U.S. interest; it has hosted U.S. naval headquarters for the Gulf for nearly 60 years. In September 2004, the United States and Bahrain signed a free trade agreement (FTA).
Date:
October 17, 2008
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Assessment of Next Generation Nuclear Plant Intermediate Heat Exchanger Design.
The Next Generation Nuclear Plant (NGNP), which is an advanced high temperature gas reactor (HTGR) concept with emphasis on production of both electricity and hydrogen, involves helium as the coolant and a closed-cycle gas turbine for power generation with a core outlet/gas turbine inlet temperature of 900-1000 C. In the indirect cycle system, an intermediate heat exchanger is used to transfer the heat from primary helium from the core to the secondary fluid, which can be helium, nitrogen/helium mixture, or a molten salt. The system concept for the vary high temperature reactor (VHTR) can be a reactor based on the prismatic block of the GT-MHR developed by a consortium led by General Atomics in the U.S. or based on the PBMR design developed by ESKOM of South Africa and British Nuclear Fuels of U.K. This report has made an assessment on the issues pertaining to the intermediate heat exchanger (IHX) for the NGNP. A detailed thermal hydraulic analysis, using models developed at ANL, was performed to calculate heat transfer, temperature distribution, and pressure drop. Two IHX designs namely, shell and straight tube and compact heat exchangers were considered in an earlier assessment. Helical coil heat exchangers were analyzed in the …
Date:
October 17, 2008
Creator:
Majumdar, S.; Moisseytsev, A. & Natesan, K.
Object Type:
Report
System:
The UNT Digital Library
Water, law, science
In a world with water resources severely impacted bytechnology, science must actively contribute to water law. To this end,this paper is an earth scientist s attempt to comprehend essentialelements of water law, and to examine their connections to science.Science and law share a common logical framework of starting with apriori prescribed tenets, and drawing consistent inferences. In science,observationally established physical laws constitute the tenets, while inlaw, they stem from social values. The foundations of modern water law inEurope and the New World were formulated nearly two thousand years ago byRoman jurists who were inspired by Greek philosophy of reason.Recognizing that vital natural elements such as water, air, and the seawere governed by immutable natural laws, they reasoned that theseelements belonged to all humans, and therefore cannot be owned as privateproperty. Legally, such public property was to be governed by jusgentium, the law of all people or the law of all nations. In contrast,jus civile or civil law governed private property. Remarkably, jusgentium continues to be relevant in our contemporary society in whichscience plays a pivotal role in exploiting vital resources common to all.This paper examines the historical roots of modern water law, followstheir evolution through the centuries, and examines how …
Date:
October 17, 2007
Creator:
Narasimhan, T.N.
Object Type:
Article
System:
The UNT Digital Library
Investigation of the Quantrum Structure of Surfaces with Far UV Excitation Spectrosscopies
Clean surfaces and those with adsorbates have been investigated to obtain electronic and atomic structure data. The various modes of synchrotron radiation (SR) photoemission spectroscopy (PES) have been performed mostly beam line 7.0.1 at the Advanced Light Source (ALS) in Berkeley, CA and some at the Synchrotron Radiation Center (SRC) in Madison, WI. These were done on silicon, carbon, and group III nitrides.
Date:
October 17, 2008
Creator:
Lapeyre, Gerlad
Object Type:
Report
System:
The UNT Digital Library
BIOGEOCHEMICAL GRADIENTS AS A FRAMEWORK FOR UNDERSTANDING WASTE SITE EVOLUTION
The migration of biogeochemical gradients is a useful framework for understanding the evolution of biogeochemical conditions in groundwater at waste sites contaminated with metals and radionuclides. This understanding is critical to selecting sustainable remedies and evaluating sites for monitored natural attenuation, because most attenuation mechanisms are sensitive to geochemical conditions such as pH and redox potential. Knowledge of how gradients in these parameters evolve provides insights into the behavior of contaminants with time and guides characterization, remedy selection, and monitoring efforts. An example is a seepage basin site at the Savannah River Site in South Carolina where low-level acidic waste has seeped into groundwater. The remediation of this site relies, in part, on restoring the natural pH of the aquifer by injecting alkaline solutions. The remediation will continue until the pH up-flow of the treatment zone increases to an acceptable value. The time required to achieve this objective depends on the time it takes the trailing pH gradient, the gradient separating the plume from influxing natural groundwater, to reach the treatment zone. Predictions of this length of time will strongly influence long-term remedial decisions.
Date:
October 17, 2008
Creator:
Denham, M. & Karen Vangelas, K.
Object Type:
Article
System:
The UNT Digital Library
Native American Technical Assistance and Training for Renewable Energy Resource Development and Electrical Generation Facilities Management
The Council of Energy Resource Tribes (CERT) will facilitate technical expertise and training of Native Americans in renewable energy resource development for electrical generation facilities, and distributed generation options contributing to feasibility studies, strategic planning and visioning. CERT will also provide information to Tribes on energy efficiency and energy management techniques.This project will provide facilitation and coordination of expertise from government agencies and private industries to interact with Native Americans in ways that will result in renewable energy resource development, energy efficiency program development, and electrical generation facilities management by Tribal entities. The intent of this cooperative agreement is to help build capacity within the Tribes to manage these important resources.
Date:
October 17, 2008
Creator:
Lester, A. David
Object Type:
Report
System:
The UNT Digital Library
Final Report for "Design calculations for high-space-charge beam-to-RF conversion".
Accelerator facility upgrades, new accelerator applications, and future design efforts are leading to novel klystron and IOT device concepts, including multiple beam, high-order mode operation, and new geometry configurations of old concepts. At the same time, a new simulation capability, based upon finite-difference “cut-cell” boundaries, has emerged and is transforming the existing modeling and design capability with unparalleled realism, greater flexibility, and improved accuracy. This same new technology can also be brought to bear on a difficult-to-study aspect of the energy recovery linac (ERL), namely the accurate modeling of the exit beam, and design of the beam dump for optimum energy efficiency. We have developed new capability for design calculations and modeling of a broad class of devices which convert bunched beam kinetic energy to RF energy, including RF sources, as for example, klystrons, gyro-klystrons, IOT's, TWT’s, and other devices in which space-charge effects are important. Recent advances in geometry representation now permits very accurate representation of the curved metallic surfaces common to RF sources, resulting in unprecedented simulation accuracy. In the Phase I work, we evaluated and demonstrated the capabilities of the new geometry representation technology as applied to modeling and design of output cavity components of klystron, IOT's, …
Date:
October 17, 2008
Creator:
Smithe, David N
Object Type:
Report
System:
The UNT Digital Library
MODELING URANIUM TRANSPORT IN UNSATURATED ZONE AT PENA BLANCA, MEXICO
None
Date:
October 17, 2005
Creator:
Ku, T.
Object Type:
Article
System:
The UNT Digital Library
Uncertainty in Integrated Assessment Scenarios
The determination of climate policy is a decision under uncertainty. The uncertainty in future climate change impacts is large, as is the uncertainty in the costs of potential policies. Rational and economically efficient policy choices will therefore seek to balance the expected marginal costs with the expected marginal benefits. This approach requires that the risks of future climate change be assessed. The decision process need not be formal or quantitative for descriptions of the risks to be useful. Whatever the decision procedure, a useful starting point is to have as accurate a description of climate risks as possible. Given the goal of describing uncertainty in future climate change, we need to characterize the uncertainty in the main causes of uncertainty in climate impacts. One of the major drivers of uncertainty in future climate change is the uncertainty in future emissions, both of greenhouse gases and other radiatively important species such as sulfur dioxide. In turn, the drivers of uncertainty in emissions are uncertainties in the determinants of the rate of economic growth and in the technologies of production and how those technologies will change over time. This project uses historical experience and observations from a large number of countries to …
Date:
October 17, 2005
Creator:
Webster, Mort
Object Type:
Report
System:
The UNT Digital Library
Final Report for "FSML – Fusion Simulation Markup Language".
The developed software consists of two parts: FSML and VizSchema. FSML is based on an XML schema that represents the visualization entities needed for displaying fields and particles data in visualization tools. Each application is then represented by an XML instance mapping its data into the XML schema. Such XML file is used by the FSML reading library to bring in fields, particles and meshes from HDF5 files into memory. Based on this library, we developed AVS/Express and VisIt plugins. The second (more flexible) part of the software is called VizSchema. It consists of the schema expressed as a set of conventions and static data in the VizSchema code. The conventions describe the markup and organization of HDF5 data that would allow easy interpretation of data in the visualization terms. Based on theses conventions, a C++ HDF5-specific API for reading the visualization data was created. Finally, based on this library, we developed a new VisIt plugin (called Vs), which allows importing data from multiple applications using the markup. These applications include VORPAL, FACETS, UEDGE, NIMROD and MODAVE. The plugin will be included into the next releases of VisIt.
Date:
October 17, 2008
Creator:
Shasharina, Svetlana
Object Type:
Report
System:
The UNT Digital Library
A Femtosecond-Level Fiber-Optics Timing Distribution System Using Frequency-Offset Interferometry
An optical fiber-based frequency and timing distribution system based on the principle of heterodyne interferometry has been in development at LBNL for several years. The fiber drift corrector has evolved from an RF-based to an optical-based system, from mechanical correctors (piezo and optical trombone) to fully electronic, and the electronics from analog to fully digital, all using inexpensive off-the-shelf commodity fiber components. Short-term optical phase jitter and long-term phase drift are both in the femtosecond range over distribution paths of 2 km or more.
Date:
October 17, 2009
Creator:
Staples, J. W.; Byrd, J.; Doolittle, L.; Huang, G. & Wilcox, R.
Object Type:
Article
System:
The UNT Digital Library
Power System Extreme Event Detection: The VulnerabilityFrontier
In this work we apply graph theoretic tools to provide aclose bound on a frontier relating the number of line outages in a gridto the power disrupted by the outages. This frontier describes theboundary of a space relating the possible severity of a disturbance interms of power disruption, from zero to some maximum on the boundary, tothe number line outages involved in the event. We present the usefulnessof this analysis with a complete analysis of a 30 bus system, and presentresults for larger systems.
Date:
October 17, 2007
Creator:
Lesieutre, Bernard C.; Pinar, Ali & Roy, Sandip
Object Type:
Article
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 37, No. 434, Ed. 1 Tuesday, October 17, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
October 17, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 442, Ed. 1 Friday, October 17, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
October 17, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 444, Ed. 1 Friday, October 17, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
October 17, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 38, No. 438, Ed. 1 Wednesday, October 17, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
October 17, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Optimist (Abilene, Tex.), Vol. 97, No. 17, Ed. 1 Friday, October 17, 2008
Bi-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 17, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History