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Seismic analysis of reactor exhaust air filter compartment

Description: The Filter Compartment (FC) in this analysis is a generic reactor airborne activity confinement filter compartment which possesses all the essential physical and mechanical properties of the Savannah River Site (SRS) confinement filters of Reactor Buildings K, L, and P. The filters belong to the Airborne Activity Confinement System (AACS). These filters absorb a significant amount of radioactive effluents from the exhausting air. The seismic excitation is input indirectly from the output of the… more
Date: September 24, 1990
Creator: Gong, Chung; Funderburk, E.L. & Jerrell, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Graph-theoretic algorithm for hierarchial decomposition of dynamic systems

Description: A graph-theoretic scheme is proposed for partitioning of dynamic systems into hierarchially ordered subsystems having independent inputs and outputs. The resulting subsystems are input-output reachable as well as structurally controllable and observable, so that a piece-by-piece design of estimators and controllers can be accomplished for systems with large dimensions without excessive computer requirements.
Date: March 24, 1982
Creator: Pichai, V.; Sezer, M.E. & Siljak, D.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stress-Relief Displacements Induced by Drilling--Applications to Holographic Measurements of in Situ Stress

Description: The holographic stressmeter is an instrument which has been developed at Caltech to allow determination of the complete stress tensor from in situ borehole measurements. The stressmeter uses double-exposure holographic interferometry to record the displacements induced by the drilling of a small sidehole into the borehole wall. The local stresses, which are the result of the far-field stresses, concentrated at the borehole, cause deformation of the surface of the borehole wall in the vicinity o… more
Date: April 24, 1992
Creator: Ahrens, T. J. & Smither, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Full-Scale Demonstration Low-NOx Cell Burner retrofit

Description: The overall objective of the Full-Scale Low-NOx Cell (LNC) Burner Retrofit project is to demonstrate the cost-effective reduction of NOx generated by a large, base-loaded (70% capacity factor or greater), coal-fired utility boiler. Specific objectives include: at least 50% NOx reduction over standard two-nozzle cell burners, without degradation of boiler performance or life; acquire and evaluate emission and boiler performance data before and after the retrofit to determine NOx reduction and im… more
Date: May 24, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Safety assessment document for the dynamic test complex (Building 836)

Description: A safety assessment was performed to determine if potential accidents at the 836 Complex at Site 300 could present undue hazards to the general public, personnel at Site 300, or have an adverse effect on the environment. The credible accidents that might have an effect on these facilities or have off-site consequences were considered. These were earthquake, extreme wind (including missiles), lightning, flood, criticality, high explosive (H) detonation that disperses uranium and beryllium, spont… more
Date: November 24, 1981
Creator: Odell, B.N. & Pfeifer, H.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Help science, math academy

Description: Article giving a brief history of the Texas Academy of Mathematics and Science, stating that business leaders across the state should be willing to fund the academy as it will help the economy.
Date: March 24, 1988
Item Type: Refine your search to only Clipping
Partner: Texas Academy of Mathematics and Science
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[Memorandum from Jean Schaake, September 24, 1987]

Description: Memorandum from Jean Schaake to Alan Moore, John Ed Allen, Gerry O'Donovan, Walter Sandefur, Bob Stevens, Bill Deering, Le Theriot, Blake Dehart, Ron Arrington, Patti Gilbert, and Peggy Guthrie, on September 24, 1987, regarding their next meeting. Schaake asks that they come to the meeting with ideas on nomination and selection criteria, math level testing, computer science, enrichment activities, and a speaker program. A paper concerning the nomination and selection of students is included.
Date: September 24, 1987
Creator: Schaake, Jean
Item Type: Refine your search to only Letter
Partner: Texas Academy of Mathematics and Science
open access

[Letter from Linus Wright to James R. Miller, November 24, 1987]

Description: Letter from Linus Wright to James R. Miller, on November 24, 1987, thanking Miller for a letter of congratulations upon Wright's appointment to the board of the Texas Academy of Mathematics and Science. Wright also apologizes for not being able to serve on the board at this time.
Date: November 24, 1987
Creator: Wright, Linus
Item Type: Refine your search to only Letter
Partner: Texas Academy of Mathematics and Science
open access

Potential impacts of artificial intelligence expert systems on geothermal well drilling costs:

Description: The Geothermal research Program of the US Department of Energy (DOE) has as one of its goals to reduce the cost of drilling geothermal wells by 25 percent. To attain this goal, DOE continuously evaluates new technologies to determine their potential in contributing to the Program. One such technology is artifical intelligence (AI), a branch of computer science that, in recent years, has begun to impact the marketplace in a number of fields. Expert systems techniques can (and in some cases, alre… more
Date: November 24, 1987
Creator: Satrape, J.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Mathematical Analysis of Atomistic-to-Continuum (AtC) Multiscale Approaches

Description: We development a general framework for information-passing and concurrent discrete to continuum scale bridging and applied it to biological, electro-mechanical and thermo-electrical systems. Funds were used for partial support of two post-doctoral research associates (Aiqin Li, Dawei Zhang) and three graduate students (Renge Li, Mohan Nuggehally, Joseph Riendeau).
Date: February 24, 2009
Creator: Fish, Jacob & Shephard, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Next Generation Integrated Environment for Collaborative Work Across Internets

Description: We are now well-advanced in our development, prototyping and deployment of a high performance next generation Integrated Environment for Collaborative Work. The system, aimed at using the capability of ESnet and Internet2 for rapid data exchange, is based on the Virtual Room Videoconferencing System (VRVS) developed by Caltech. The VRVS system has been chosen by the Internet2 Digital Video (I2-DV) Initiative as a preferred foundation for the development of advanced video, audio and multimedia c… more
Date: February 24, 2009
Creator: Newman, Harvey B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental and Numerical Investigation of Flows in Expanding Channels

Description: We present an experimental realization of the classical Jeffery-Hamel flows inside a wedge-shaped channel. We compare the measured velocity fields with the predictions of Jeffery-Hamel theory. A detailed experimental study of bifurcation diagrams for the solutions reveals the absolute stability of the pure outflow solution and an interesting hysteretic structure for bifurcations. We also observe a multiple vortex flow regime predicted earlier numerically and analytically. Experimental studies o… more
Date: October 24, 2008
Creator: Vorobieff, Peter & Putkaradze, Vakhtang
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Center for Programming Models for Scalable Parallel Computing: Future Programming Models

Description: The mission of the pmodel center project is to develop software technology to support scalable parallel programming models for terascale systems. The goal of the specific UD subproject is in the context developing an efficient and robust methodology and tools for HPC programming. More specifically, the focus is on developing new programming models which facilitate programmers in porting their application onto parallel high performance computing systems. During the course of the research in the … more
Date: July 24, 2008
Creator: Gao, Guang, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Science & Technology Review December 2007

Description: This month's issue has the following articles: (1) Homeland Security Begins Abroad--Commentary by John C. Doesburg; (2) Out of Harm's Way--New physical protection and accountability systems, together with a focus on security, safeguard nuclear materials in the Russian Federation; (3) A Calculated Journey to the Center of the Earth--Determining the permeability of partially melted metals in a mineral matrix unlocks secrets about the formation of Earth's core; (4) Wireless That Works--Communicati… more
Date: October 24, 2007
Creator: Chinn, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Virtual venue management users manual : access grid toolkit documentation, version 2.3.

Description: An Access Grid Venue Server provides access to individual Virtual Venues, virtual spaces where users can collaborate using the Access Grid Venue Client software. This manual describes the Venue Server component of the Access Grid Toolkit, version 2.3. Covered here are the basic operations of starting a venue server, modifying its configuration, and modifying the configuration of the individual venues.
Date: October 24, 2007
Creator: Judson, I. R.; Lefvert, S.; Olson, E.; Uram, T. D. & Science, Mathematics and Computer
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scalable High Performance Message Passing over InfiniBand for Open MPI

Description: InfiniBand (IB) is a popular network technology for modern high-performance computing systems. MPI implementations traditionally support IB using a reliable, connection-oriented (RC) transport. However, per-process resource usage that grows linearly with the number of processes, makes this approach prohibitive for large-scale systems. IB provides an alternative in the form of a connectionless unreliable datagram transport (UD), which allows for near-constant resource usage and initialization ov… more
Date: October 24, 2007
Creator: Friedley, A.; Hoefler, T.; Leininger, M. L. & Lumsdaine, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Assessment of Potential Health Impacts on Utrok Atoll from Exposure to Cesium-137 (137Cs) and Plutonium

Description: Residual fallout contamination from the nuclear test program in the Marshall Islands is a concern to Marshall Islanders because of the potential health risks associated with exposure to residual fallout contamination in the environment. Scientists from Lawrence Livermore National Laboratory (LLNL) have been monitoring the amount of fallout radiation delivered to Utrok Atoll residents over the past 4 years. This briefing document gives an outline of our findings from the whole body counting and … more
Date: July 24, 2007
Creator: Hamilton, T.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Current Advances in the Computational Simulation of the Formation of Low-Mass Stars

Description: Developing a theory of low-mass star formation ({approx} 0.1 to 3 M{sub {circle_dot}}) remains one of the most elusive and important goals of theoretical astrophysics. The star-formation process is the outcome of the complex dynamics of interstellar gas involving non-linear interactions of turbulence, gravity, magnetic field and radiation. The evolution of protostellar condensations, from the moment they are assembled by turbulent flows to the time they reach stellar densities, spans an enormou… more
Date: October 24, 2005
Creator: Klein, R. I.; Inutsuka, S.; Padoan, P. & Tomisaka, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Coupling Multi-Component Models with MPH on Distributed Memory Computer Architectures

Description: A growing trend in developing large and complex applications on today's Teraflop scale computers is to integrate stand-alone and/or semi-independent program components into a comprehensive simulation package. One example is the Community Climate System Model which consists of atmosphere, ocean, land-surface and sea-ice components. Each component is semi-independent and has been developed at a different institution. We study how this multi-component, multi-executable application can run effectiv… more
Date: March 24, 2005
Creator: He, Yun & Ding, Chris
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Identify Dynamic Network Modules with Temporal and Spatial Constraints

Description: Despite the rapid accumulation of systems-level biological data, understanding the dynamic nature of cellular activity remains a difficult task. The reason is that most biological data are static, or only correspond to snapshots of cellular activity. In this study, we explicitly attempt to detangle the temporal complexity of biological networks by using compilations of time-series gene expression profiling data.We define a dynamic network module to be a set of proteins satisfying two conditions… more
Date: September 24, 2007
Creator: Jin, R.; McCallen, S.; Liu, C.; Almaas, E. & Zhou, X. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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