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open access

Fabrication and Characterization of Cylindrical Light Diffusers Comprised of Shape Memory Polymer

Description: We have developed a technique for constructing light diffusing devices comprised of a flexible shape memory polymer (SMP) cylindrical diffuser attached to the tip of an optical fiber. Devices were fabricated by casting an SMP rod over the cleaved tip of an optical fiber and media blasting the SMP rod to create a light diffusing surface. The axial and polar emission profiles and circumferential (azimuthal) uniformity were characterized for various blasting pressures, nozzle-to-sample distances, … more
Date: January 29, 2007
Creator: Small, W., IV; Buckley, P. R.; Wilson, T. S.; Loge, J. M.; Maitland, K. D. & Maitland, D. J.
Item Type: Refine your search to only Article
open access

Foreign Investor Visas: Policies and Issues

Description: This report provides a brief legislative background, the discussions of immigrant and non immigrant investors visas, a comparison of the U.S, and Canadian immigrant investor programs, an analysis of the relationship between investment and immigration, and finally a review of current issues.
Date: January 29, 2007
Creator: Haddal, Chad C.
Item Type: Refine your search to only Report
open access

HIGH LEVEL WASTE (HLW) SLUDGE BATCH 4 (SB4) WITH FRIT 418: RESULTS OF A PHASE II VARIABILITY STUDY

Description: In early October 2006, the Liquid Waste Organization (LWO) began to consider decanting Tank 40 at the end of Sludge Batch 3 (SB3) processing and transferring the aqueous phase from the decant to Tank 51. This transfer would be done to remove water added to Tank 40 by a slurry pump bearing water leak. Tank 40 decant water would be used to decrease Tank 51 yield stress and facilitate a transfer of Tank 51 to Tank 40. The projected composition of Sludge Batch 4 (SB4) was adjusted by LWO to reflect… more
Date: January 29, 2007
Creator: Fox, K; Tommy Edwards, T; David Peeler, D; David Best, D; Irene Reamer, I & Phyllis Workman, P
Item Type: Refine your search to only Report
open access

Hurricanes Katrina and Rita Disaster Relief: Prevention Is the Key to Minimizing Fraud, Waste, and Abuse in Recovery Efforts

Description: Testimony issued by the Government Accountability Office with an abstract that begins "Hurricanes Katrina and Rita destroyed homes and displaced millions of individuals. While federal and state governments continue to respond to this disaster, GAO has identified significant control weaknesses--specifically in the Federal Emergency Management Agency (FEMA)'s Individuals and Households Program (IHP) and in Department of Homeland Security (DHS)'s purchase card program--resulting in significant fra… more
Date: January 29, 2007
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Text
open access

Internships, Fellowships, and Other Work Experience Opportunities in the Federal Government

Description: This report describes Internet resources on internships, fellowships, and work experience programs within the federal government. It is intended as a selective guide for students of all levels: high school, undergraduate, graduate, and postgraduate. This report will be updated annually.
Date: January 29, 2007
Creator: Manning, Jennifer E.
Item Type: Refine your search to only Report
open access

MCSNA: Experimental Benchmarking of Pu Electronic Structure

Description: The objective of this work is to develop and/or apply advanced diagnostics to the understanding of aging of Pu. Advanced characterization techniques such as photoelectron and x-ray absorption spectroscopy will provide fundamental data on the electronic structure of Pu phases. These data are crucial for the validation of the electronic structure methods. The fundamental goal of this project is to narrow the parameter space for the theoretical modeling of Pu aging. The short-term goal is to perfo… more
Date: January 29, 2007
Creator: Tobin, J G
Item Type: Refine your search to only Article
open access

Multi-Petabyte Image Data Management Systems

Description: This research effort is directed to determine the methods and computational infrastructure needed to save, browse, and analyze multiple petabyte databases. The data set to be generated by the Large Synoptic Survey Telescope is used as a template for this research.
Date: January 29, 2007
Creator: Dossa, D D
Item Type: Refine your search to only Report
open access

NSLS-II DESIGN: A NOVEL APPROACH TO LIGHT SOURCE DESIGN

Description: The NSLS-II storage ring will be a replacement for the existing two NSLS light sources, which although innovative when proposed, have been exceeded by modern light source designs. NSLS-II design takes a new approach toward providing users with the very bright beams after commissioning and a strategy of evolving to higher brightness beams as more ID devices are installed during its operations. This is achieved not by pushing the basic lattice to lower emittance, an approach that hits severe limi… more
Date: January 29, 2007
Creator: KRAMER,S.
Item Type: Refine your search to only Article
open access

On The Electronic Configuration in Pu

Description: X-Ray Absorption Spectroscopy (XAS) and Photoelectron Spectroscopy (PES) have been performed upon highly radioactive samples, particularly Plutonium, at the Advanced Light Source in Berkeley, CA, USA. First results from alpha and delta Plutonium are reported as well as a detailed analysis of sample quality.
Date: January 29, 2007
Creator: Tobin, J G; Soderlind, P; Landa, A; Moore, K T; Schwartz, A J; Chung, B W et al.
Item Type: Refine your search to only Article
open access

Optical Effects of Wakefields in the PEP-II Stanford Linear Accelerator Center B Factory

Description: Wakefields defining beam stability affect also the beam optics and beam properties in high current machines. In this paper we present observations and analysis of the optical effects in the PEP-II SLAC B-factory, which has the record in achievement of high electron and positron currents. We study the synchronous phase and the bunch length variation along the train of bunches, overall bunch lengthening and effects of the wakes on the tune and on the Twiss parameters. This analysis is being used … more
Date: January 29, 2007
Creator: Heifets, S.; Novokhatski, S. & Teytelman, D.
Item Type: Refine your search to only Article
open access

POET: Parameterized Optimization for Empirical Tuning

Description: The excessive complexity of both machine architectures and applications have made it difficult for compilers to statically model and predict application behavior. This observation motivates the recent interest in performance tuning using empirical techniques. We present a new embedded scripting language, POET (Parameterized Optimization for Empirical Tuning), for parameterizing complex code transformations so that they can be empirically tuned. The POET language aims to significantly improve th… more
Date: January 29, 2007
Creator: Yi, Q; Seymour, K; You, H; Vuduc, R & Quinlan, D
Item Type: Refine your search to only Article
open access

Retirement Savings: How Much Will Workers Have When They Retire?

Description: This report presents the results of an analysis of the amount of retirement savings that households might be able to accumulate by age 65 under a number of different scenarios. The analysis shows how varying the age at which households begin to save for retirement, the percentage of their earnings that they save, and the rate of return on investment can affect the amount of retirement savings the household will accumulate.
Date: January 29, 2007
Creator: Purcell, Patrick & Whitman, Debra B.
Item Type: Refine your search to only Report
open access

RHIC STATUS

Description: As the first hadron accelerator and collider consisting of two independent superconducting rings RHIC has operated with a wide range of beam energies and particle species. Machine operation and performance will be reviewed that includes high luminosity gold-on-gold and copper-on-copper collisions at design beam energy (100 GeVh), asymmetric deuteron-on-gold collisions as well as high energy polarized proton-proton collisions (100 GeV on 100 GeV) with beam polarization of up to 65%. Plans for fu… more
Date: January 29, 2007
Creator: ROSER, T.
Item Type: Refine your search to only Article
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