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Potential applications of nanostructured materials in nuclear waste management.

Description: This report summarizes the results obtained from a Laboratory Directed Research & Development (LDRD) project entitled 'Investigation of Potential Applications of Self-Assembled Nanostructured Materials in Nuclear Waste Management'. The objectives of this project are to (1) provide a mechanistic understanding of the control of nanometer-scale structures on the ion sorption capability of materials and (2) develop appropriate engineering approaches to improving material properties based on such an… more
Date: September 1, 2003
Creator: Braterman, Paul S. (The University of North Texas, Denton, TX); Phol, Phillip Isabio; Xu, Zhi-Ping (The University of North Texas, Denton, TX); Brinker, C. Jeffrey; Yang, Yi (University of New Mexico, Albuquerque, NM); Bryan, Charles R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Suppression of electron emission from metal electrodes : LDRD 28771 final report.

Description: This research consisted of testing surface treatment processes for stainless steel and aluminum for the purpose of suppressing electron emission over large surface areas to improve the pulsed high voltage hold-off capabilities of these metals. Improvements to hold-off would be beneficial to the operation of the vacuum-insulator grading rings and final self-magnetically insulated transmission line on the ZR-upgrade machine and other pulsed power applications such as flash radiograph and pulsed-m… more
Date: November 1, 2003
Creator: Stygar, William A.; Savage, Mark Edward; Ives, Harry Crockett, III; Johnson, David J. & Fowler, William E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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LIGA microsystems aging : evaluation and mitigation.

Description: The deployment of LIGA structures in DP applications requires a thorough understanding of potential long term physical and chemical changes that may occur during service. While these components are generally fabricated from simple metallic systems such as copper, nickel and nickel alloys, the electroplating process used to form them creates microstructural features which differ from those found in conventional (e.g. ingot metallurgy) processing of such materials. Physical changes in non-equilib… more
Date: December 1, 2003
Creator: Cadden, Charles H.; Yang, Nancy Y. C. & San Marchi, Christopher W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Position paper on active countermeasures for computer networks.

Description: Computer security professionals have used passive network countermeasures for several years in order to secure computer networks. Passive countermeasures such as firewalls and intrusion detection systems are effective but their use alone is not enough to protect a network. Active countermeasures offer new ways of protecting a computer network. Corporations and government entities should adopt active network countermeasures as a means of protecting their computer networks.
Date: July 1, 2003
Creator: Van Randwyk, Jamie A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Arrayed resonant subwavelength gratings : LDRD 38618 final report.

Description: This report describes a passive, optical component called resonant subwavelength gratings (RSGs), which can be employed as one element in an RSG array. An RSG functions as an extremely narrow wavelength and angular band reflector, or mode selector. Theoretical studies predict that the infinite, laterally-extended RSG can reflect 100% of the resonant light while transmitting the balance of the other wavelengths. Experimental realization of these remarkable predictions has been impacted primarily… more
Date: November 1, 2003
Creator: Grotbeck, Carter L.; Kemme, Shanalyn A.; Wendt, Joel Robert; Warren, Mial E.; Samora, Sally; Carter, Tony Ray et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biosecurity reference : CFR-listed agent and toxin summaries.

Description: This reference document provides summary information on the animal, plant, zoonotic, and human pathogens and toxins regulated and categorized by 9 CFR 331 and 7 CFR 121, 'Agricultural Bioterrorism Protection Act of 2002; Possession, Use and Transfer of Biological Agents and Toxins,' and 42 CFR 73, 'Possession, Use, and Transfer of Select Agents and Toxins.' Summary information includes, at a minimum, a description of the agent and its associated symptoms; often additional information is provide… more
Date: September 1, 2003
Creator: Barnett, Natalie Beth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enabling technology for human collaboration.

Description: This report summarizes the results of a five-month LDRD late start project which explored the potential of enabling technology to improve the performance of small groups. The purpose was to investigate and develop new methods to assist groups working in high consequence, high stress, ambiguous and time critical situations, especially those for which it is impractical to adequately train or prepare. A testbed was constructed for exploratory analysis of a small group engaged in tasks with high co… more
Date: November 1, 2003
Creator: Murphy, Tim Andrew (MindTel, LLC, Syracuse, NY); Jones, Wendell Bruce; Warner, David Jay (MindTel, LLC, Syracuse, NY); Doser, Adele Beatrice; Johnson, Curtis Martin & Merkle, Peter Benedict
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final report for the Multiprotocol Label Switching (MPLS) control plane security LDRD project.

Description: As rapid Internet growth continues, global communications becomes more dependent on Internet availability for information transfer. Recently, the Internet Engineering Task Force (IETF) introduced a new protocol, Multiple Protocol Label Switching (MPLS), to provide high-performance data flows within the Internet. MPLS emulates two major aspects of the Asynchronous Transfer Mode (ATM) technology. First, each initial IP packet is 'routed' to its destination based on previously known delay and cong… more
Date: September 1, 2003
Creator: Torgerson, Mark Dolan; Michalski, John T.; Tarman, Thomas David; Black, Stephen P. & Pierson, Lyndon George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

GICHD mine dog testing project - soil sample results #4.

Description: A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be ob… more
Date: August 1, 2003
Creator: Barnett, James L.; Phelan, James M.; Archuleta, Luisa M.; Wood, Tyson B.; Donovan, Kelly L. & Bender, Susan Fae Ann
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cooperative measures to mitigate Asia-Pacific maritime conflicts.

Description: The economies of East Asia are predominantly export based and, therefore, place special emphasis on the security of the sea lines of communication (SLOCs). Due to economic globalization, the United States shares these concerns. Cooperative measures by the concerned parties could reduce the potential for disruption by maritime conflicts. Primary threats against the SLOCs are disputes over the resources under the seas, disputes over some small island groups, disputes between particular parties (C… more
Date: May 1, 2003
Creator: Chai, Wen-Chung (Taiwan Navy)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quantum computing accelerator I/O : LDRD 52750 final report.

Description: In a superposition of quantum states, a bit can be in both the states '0' and '1' at the same time. This feature of the quantum bit or qubit has no parallel in classical systems. Currently, quantum computers consisting of 4 to 7 qubits in a 'quantum computing register' have been built. Innovative algorithms suited to quantum computing are now beginning to emerge, applicable to sorting and cryptanalysis, and other applications. A framework for overcoming slightly inaccurate quantum gate interact… more
Date: December 1, 2003
Creator: Schroeppel, Richard Crabtree; Modine, Normand Arthur; Ganti, Anand; Pierson, Lyndon George & Tigges, Christopher P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of experimental verification techniques for non-linear deformation and fracture.

Description: This project covers three distinct features of thin film fracture and deformation in which the current experimental technique of nanoindentation demonstrates limitations. The first feature is film fracture, which can be generated either by nanoindentation or bulge testing thin films. Examples of both tests will be shown, in particular oxide films on metallic or semiconductor substrates. Nanoindentations were made into oxide films on aluminum and titanium substrates for two cases; one where the … more
Date: December 1, 2003
Creator: Moody, Neville Reid & Bahr, David F. (Washington State University, Pullman, WA)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dual mode use requirements analysis for the institutional cluster.

Description: This paper analyzes what additional costs would be incurred in supporting dual-mode, i.e. both classified and unclassified use of the Institutional Computing (IC) hardware. The following five options are considered: periods processing in which a fraction of the system alternates in time between classified and unclassified modes, static split in which the system is constructed as a set of smaller clusters which remain in one mode or the other, re-configurable split in which the system is constru… more
Date: September 1, 2003
Creator: Leland, Robert W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uncertainty quantification in reacting flow modeling.

Description: Uncertainty quantification (UQ) in the computational modeling of physical systems is important for scientific investigation, engineering design, and model validation. In this work we develop techniques for UQ based on spectral and pseudo-spectral polynomial chaos (PC) expansions, and we apply these constructions in computations of reacting flow. We develop and compare both intrusive and non-intrusive spectral PC techniques. In the intrusive construction, the deterministic model equations are re… more
Date: October 1, 2003
Creator: Le MaÒitre, Olivier P. (UniversitÔe d'Evry Val d'Essonne, Evry, France); Reagan, Matthew T.; Knio, Omar M. (Johns Hopkins University, Baltimore, MD); Ghanem, Roger Georges (Johns Hopkins University, Baltimore, MD) & Najm, Habib N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental geochemistry of radioactive contamination.

Description: This report attempts to describe the geochemical foundations of the behavior of radionuclides in the environment. The information is obtained and applied in three interacting spheres of inquiry and analysis: (1) experimental studies and theoretical calculations, (2) field studies of contaminated and natural analog sites and (3) model predictions of radionuclide behavior in remediation and waste disposal. Analyses of the risks from radioactive contamination require estimation of the rates of rel… more
Date: September 1, 2003
Creator: Bryan, Charles R. & Siegel, Malcolm Dean
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pollution prevention opportunity assessment for Facilities Maintenance Team (FMT) paint shop.

Description: This Pollution Prevention Opportunity Assessment (PPOA) was conducted for Sandia National Laboratories/California Facilities Maintenance Team Paint Shop Operations in August and September 2002. The primary purpose of this PPOA is to provide recommendations to assist Paint Shop personnel in reducing the generation of waste and improving the efficiency of their processes. This report contains a summary of the information collected and analyses performed and recommends options for implementation. … more
Date: May 1, 2003
Creator: Klossner, Kristin Ann
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Less-than-lethal "flashbang" diversionary device.

Description: Diversionary devices such as flashbang grenades are used in a wide variety of military and law-enforcement operations. They function to distract and/or incapacitate adversaries in scenarios ranging from hostage rescue to covert strategic paralysis operations. There are a number of disadvantages associated with currently available diversionary devices. Serious injuries and fatalities have resulted from their use both operationally and in training. Because safety is of paramount importance, desir… more
Date: November 1, 2003
Creator: Fleming, Kevin James; Melof, Brian Matthew; Ingram, Brian V.; Bender, Susan Fae Ann; Broyles, Theresa A.; Anderson, Heidi M. (K-Tech Corporation, Albuquerque, NM) et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Principles of Faithful Execution in the implementation of trusted objects.

Description: We begin with the following definitions: Definition: A trusted volume is the computing machinery (including communication lines) within which data is assumed to be physically protected from an adversary. A trusted volume provides both integrity and privacy. Definition: Program integrity consists of the protection necessary to enable the detection of changes in the bits comprising a program as specified by the developer, for the entire time that the program is outside a trusted volume. For ease … more
Date: September 1, 2003
Creator: Tarman, Thomas David; Campbell, Philip LaRoche & Pierson, Lyndon George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Developing close combat behaviors for simulated soldiers using genetic programming techniques.

Description: Genetic programming is a powerful methodology for automatically producing solutions to problems in a variety of domains. It has been used successfully to develop behaviors for RoboCup soccer players and simple combat agents. We will attempt to use genetic programming to solve a problem in the domain of strategic combat, keeping in mind the end goal of developing sophisticated behaviors for compound defense and infiltration. The simplified problem at hand is that of two armed agents in a small r… more
Date: October 1, 2003
Creator: Pryor, Richard J. & Schaller, Mark J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiant heat test of Perforated Metal Air Transportable Package (PMATP).

Description: A conceptual design for a plutonium air transport package capable of surviving a 'worst case' airplane crash has been developed by Sandia National Laboratories (SNL) for the Japan Nuclear Cycle Development Institute (JNC). A full-scale prototype, designated as the Perforated Metal Air Transport Package (PMATP) was thermally tested in the SNL Radiant Heat Test Facility. This testing, conducted on an undamaged package, simulated a regulation one-hour aviation fuel pool fire test. Finite element t… more
Date: August 1, 2003
Creator: Gronewald, Patrick James; Oneto, Robert (Weidlinger Associates, Inc., Los Altos, CA); Mould, John (Weidlinger Associates, Inc., Los Altos, CA) & Pierce, Jim Dwight
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

First principles determination of dislocation properties.

Description: This report details the work accomplished on first principles determination of dislocation properties. It contains an introduction and three chapters detailing three major accomplishments. First, we have used first principle calculations to determine the shear strength of an aluminum twin boundary. We find it to be remarkably small ({approx}17 mJ/m{sup 2}). This unexpected result is explained and will likely pertain for many other grain boundaries. Second, we have proven that the conventional e… more
Date: December 1, 2003
Creator: Hamilton, John C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Soot properties and species measurements in a two-meter diameter JP-8 pool fire.

Description: A tunable diode laser absorption spectroscopy probe was used to measure in situ soot properties and species concentrations in two-meter diameter JP-8 pool fires. Twelve tests were performed at the Lurance Canyon Bum Site operated by Sandia in Albuquerque, New Mexico. Seven of the tests were conducted with the probe positioned close to the centerline at heights above the pool surface ranging from 0.5 m to 2.0 mm in 0.25 m increments. For the remaining five tests, the probe was positioned at two … more
Date: June 1, 2003
Creator: Shaddix, Christopher R. & Murphy, Jeffrey J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Covert air vehicle 2003 LDRD final report.

Description: This report describes the technical work carried out under a 2003 Laboratory Directed Research and Development project to develop a covert air vehicle. A mesoscale air vehicle that mimics a bird offers exceptional mobility and the possibility of remaining undetected during flight. Although some such vehicles exist, they are lacking in key areas: unassisted landing and launching, true mimicry of bird flight to remain covert, and a flapping flight time of any real duration. Current mainstream tec… more
Date: November 1, 2003
Creator: Spletzer, Barry Louis; Callow, Diane Schafer; Salton, Jonathan Robert & Fischer, Gary John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Verification, validation, and predictive capability in computational engineering and physics.

Description: Developers of computer codes, analysts who use the codes, and decision makers who rely on the results of the analyses face a critical question: How should confidence in modeling and simulation be critically assessed? Verification and validation (V&V) of computational simulations are the primary methods for building and quantifying this confidence. Briefly, verification is the assessment of the accuracy of the solution to a computational model. Validation is the assessment of the accuracy of… more
Date: February 1, 2003
Creator: Oberkampf, William Louis; Hirsch, Charles (Vrije Universiteit Brussel, Brussels, Belgium) & Trucano, Timothy Guy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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