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Ab-Initio No-Core Shell Model

Description: We discuss the no-core shell model approach, an ab initio method with effective Hamiltonians derived from realistic nucleon-nucleon (NN) potentials as a function of the finite harmonic-oscillator (HO) basis space. We present results for three and four nucleon systems in model spaces that include up to 50{Dirac_h}{Omega} and 18{bar h}{Omega} HO excitations, respectively. For these light systems we are in agreement with results obtained by other exact methods. Also, we calculate the properties of… more
Date: March 2, 2001
Creator: Barrett, B R; Navratil, P; Vary, J P & Ormand, W E
Item Type: Refine your search to only Article
open access

Abortion Law Development: A Brief Overview

Description: This report summarizes the history of legislation on abortion. Moreover, the report discusses the conflict that surrounds the history of the court cases and how it has effected legislation passed since Roe v. Wade. The report also covers how Roe v. Wade and Doe v. Bolton did not cover a variety of issues that have since been raised by states seeking to restrict abortion.
Date: January 2, 2001
Creator: Jon, Shimbukuro O.
Item Type: Refine your search to only Report
open access

Abortion Law Development: A Brief Overview

Description: This report offers an overview of the development of abortion law from 1973 to the present. Beginning with a brief discussion of the historical background, the report analyzes the leading Supreme Court decisions over the past twenty-eight years, emphasizing particularly the landmark decisions in Roe and Doe, the Court’s shift in direction in Webster v. Reproductive Health Services and Planned Parenthood of Southeastern Pennsylvania v. Casey, and the Court’s most recent decision on abortion, Ste… more
Date: January 2, 2001
Creator: Lewis, Karen J. & Shimabukuro, Jon O.
Item Type: Refine your search to only Report
open access

Addressing the Axial Burnup Distribution in PWR Burnup Credit Criticality Safety

Description: This paper summarizes efforts related to developing a technically justifiable approach for addressing the axial burnup distribution in PWR burnup-credit criticality safety analyses. The paper reviews available data on the axial variation in burnup and the effect of axial burnup profiles on reactivity in a SNF cask. A publicly available database of profiles is examined to identify profiles that maximize the neutron multiplication factor, k{sub eff}, assess its adequacy for general PWR burnup cre… more
Date: August 2, 2001
Creator: Wagner, J. C.
Item Type: Refine your search to only Article
open access

Africa: U.S. Foreign Assistance Issues

Description: This report discusses the issue of U.S. economic assistance to sub-Saharan Africa, highlighting the importance of continued assistance in light of U.S. national security and also various U.S.-led efforts to promote reform amongst African citizens themselves. U.S. assistance finds its way to Africa through a variety of channels, including the USAID-administered DA program, food aid programs, and indirect aid provided through international financial institutions and the United Nations.
Date: May 2, 2001
Creator: Copson, Raymond W.
Item Type: Refine your search to only Report
open access

Analytical study and tracking simulations of the beam-beam compensation at Tevatron

Description: Head-on and long-range induced tunespread of about 0.025 in the Tevatron collider at Run II (together with the increased strength of the resonances) can significantly deteriorate the {bar p} lifetime and the collider luminosity. It was proposed to employ the so-called Tevatron Electron Lenses (TEL) to compress the beam-beam footprint and eliminate completely the bunch-to-bunch tunespread (PACMAN effect) for small amplitude particles. The first lens has been recently installed and tested [1]. Th… more
Date: July 2, 2001
Creator: Shatilov, Dmitry; Alexahin, Yuri & Shiltsev, Vladimir
Item Type: Refine your search to only Article
open access

Aquifer Transport of Th, U, Ra, and Rn In Solution and Colloids

Description: The ability to safely store radioactive materials for long periods of time depends on our understanding of the conditions that mobilize the nuclei, which requires an understanding of the mechanisms of dissolution and transport in aquifers. The objective of this research was to gain an understanding of the dissolution and transport of naturally occurring uranium, thorium, and their radioactive daughter products in groundwater systems without using injected tracers or accidental contaminants. The… more
Date: April 2, 2001
Creator: Wasserburg, G. J.
Item Type: Refine your search to only Report
open access

Beam-beam interactions at the Tevatron in Run IIa

Description: The Tevatron in Run IIa will operate with three trains of twelve bunches each. The impact of the long-range interactions on beam stability will be more significant compared to Run I. We study these beam-beam interactions (head-on and long-range) with particle tracking using two different codes. The model includes machine nonlinearities such as the field errors of the Interaction Region quadrupoles and the chromaticity sextupoles. Tune footprints and dynamic apertures are calculated for differen… more
Date: July 2, 2001
Creator: Sen, Tanaji; Gelfand, Norman & Xiao, Meiqin
Item Type: Refine your search to only Article
open access

Benchmarking residual dose rates in a NuMI-like environment

Description: Activation of various structural and shielding materials is an important issue for many applications. A model developed recently to calculate residual activity of arbitrary composite materials for arbitrary irradiation and cooling times is presented in the paper. Measurements have been performed at the Fermi National Accelerator Laboratory using a 120 GeV proton beam to study induced radioactivation of materials used for beam line components and shielding. The calculated residual dose rates for… more
Date: November 2, 2001
Creator: al., Igor L. Rakhno et
Item Type: Refine your search to only Article
open access

Benefits of Qualitative Simulation for Managing Fluctuating Staffing Needs

Description: Management of the High Level Waste Program Office at the Idaho National Environmental and Engineering Laboratory has projected oscillating future employment levels. A simple computer model was created to help convince management that qualitative modeling of ''soft'' variables can provide appreciable insight into the consequences and performance of alternative staffing policies. Advocacy of the model underlying the simulation or a particular strategy did not motivate the study, but rather a desi… more
Date: July 2, 2001
Creator: Nichols, T. T.
Item Type: Refine your search to only Report
open access

The BigHorn Home Improvement Center; Silverthorne, Colorado

Description: The BigHorn Home Improvement Center in Silverthorne, Colorado, was designed using a whole-building approach, looking at the way that the building's site, windows, walls, floors, electrical, and mechanical systems could work together most efficiently. The center includes a hardware store and building materials warehouse space, and features a 9.0 kw photovoltaic system to provide an average of 25% of the building's electricity. The BigHorn Center is one of the nation's first commercial buildings … more
Date: January 2, 2001
Creator: Epstein, K. & Torcellini, P.
Item Type: Refine your search to only Book
open access

Briefing Slides on Martin Frankel's Alleged $200 Million Insurance Scam

Description: Correspondence issued by the General Accounting Office with an abstract that begins "This report provides information on a highly publicized insurance investment scam exposed in May 1999. Martin Frankel, with the assistance of others, allegedly obtained secret control of entities in both the insurance and securities industries. Instead of managing the assets of these companies in a prudent manner, he allegedly diverted them to other accounts he controlled and used them to support the ongoing sc… more
Date: August 2, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Building a High Performance Raw Disk Subsystem for Alpha/Linux

Description: The Linux kernel version 2.2.19 lacks UNIX-style raw disk support, and its SCSI layer is optimized for small transfer sizes. This report describes kernel patches to add raw disk support and enhance performance in the SCSI layer and QLA2x00 Fibre Channel device driver for large transfer sizes. Benchmarks demonstrate raw disk performance of 191 megabytes/second write, 176 megabytes/second read for one megabyte random I/O on a Compaq ES40 computer system with two QLogic QLA2200F Fibre Channel host… more
Date: July 2, 2001
Creator: Garlick, Jim
Item Type: Refine your search to only Report
open access

C0 low-{beta} optics

Description: A low-{beta} insertion has been designed for the BTeV experiment at C0. With {+-} 12 m for detector space, a {beta}* of 0.5 m can be achieved using 170 T/m magnets in the final focus triplets. A total half-crossing angle of 240 {micro}r is necessary to keep the beams separated by 5{sigma} at the 2nd parasitic crossing. There are 2 possible Tevatron collision scenarios: B0 and D0, but not C0, and; C0, but not B0 or D0.
Date: February 2, 2001
Creator: Johnstone, J.A.
Item Type: Refine your search to only Report
open access

Campaign Finance: Constitutional and Legal Issues of Soft Money

Description: This report is categorized into seven categories: (I) Most recent developments, (II) Background and Analysis, (III) Definitions of Hard and Soft Money in Federal Elections, (IV) Political Party Soft Money, (V) Corporate and Labor Union Soft Money, (VI) Soft Money Spent on Issue Advocacy and (VII) Selected 107th Congress Legislation.
Date: March 2, 2001
Creator: Whitaker, L. Paige
Item Type: Refine your search to only Report
open access

The CDF computing and analysis system: First experience

Description: The Collider Detector at Fermilab (CDF) collaboration records and analyses proton anti-proton interactions with a center-of-mass energy of 2 TeV at the Tevatron. A new collider run, Run II, of the Tevatron started in April. During its more than two year duration the CDF experiment expects to record about 1 PetaByte of data. With its multi-purpose detector and center-of-mass energy at the frontier, the experimental program is large and versatile. The over 500 scientists of CDF will engage in sea… more
Date: November 2, 2001
Creator: al., R. Colombo et
Item Type: Refine your search to only Article
open access

The CDF online silicon vertex tracker

Description: The CDF Online Silicon Vertex Tracker reconstructs 2-D tracks by linking hit positions measured by the Silicon Vertex Detector to the Central Outer Chamber tracks found by the eXtremely Fast Tracker. The system has been completely built and assembled and it is now being commissioned using the first CDF run II data. The precision measurement of the track impact parameter will allow triggering on B hadron decay vertices and thus investigating important areas in the B sector, like CP violation and… more
Date: November 2, 2001
Creator: al., W. Ashmanskas et
Item Type: Refine your search to only Article
open access

The CDF Run II disk inventory manager

Description: The Collider Detector at Fermilab (CDF) experiment records and analyses proton-antiproton interactions at a center-of-mass energy of 2 TeV. Run II of the Fermilab Tevatron started in April of this year. The duration of the run is expected to be over two years. One of the main data handling strategies of CDF for Run II is to hide all tape access from the user and to facilitate sharing of data and thus disk space. A disk inventory manager was designed and developed over the past years to keep tra… more
Date: November 2, 2001
Creator: Lammel, Paul Hubbard and Stephan
Item Type: Refine your search to only Article
open access

Child Care: States Increased Spending on Low-Income Families

Description: A letter report issued by the General Accounting Office with an abstract that begins "Nationwide, states reported that federal and state expenditures for child care under the Child Care and Development Fund (CCDF) block grant and the Temporary Assistance for Needy Families (TANF) block grant grew from $4.1 billion in fiscal year 1997 to $6.9 billion in fiscal year 1999 and totaled over $16 billion in constant fiscal year 1997 dollars for this three-year period. More than half of the children wh… more
Date: February 2, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
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