Specification and implementation of IFC based performance metrics to support building life cycle assessment of hybrid energy systems (open access)

Specification and implementation of IFC based performance metrics to support building life cycle assessment of hybrid energy systems

Minimizing building life cycle energy consumption is becoming of paramount importance. Performance metrics tracking offers a clear and concise manner of relating design intent in a quantitative form. A methodology is discussed for storage and utilization of these performance metrics through an Industry Foundation Classes (IFC) instantiated Building Information Model (BIM). The paper focuses on storage of three sets of performance data from three distinct sources. An example of a performance metrics programming hierarchy is displayed for a heat pump and a solar array. Utilizing the sets of performance data, two discrete performance effectiveness ratios may be computed, thus offering an accurate method of quantitatively assessing building performance.
Date: March 29, 2004
Creator: Morrissey, Elmer; O'Donnell, James; Keane, Marcus & Bazjanac, Vladimir
Object Type: Article
System: The UNT Digital Library
Massive Star Formation in a Gravitationally-Lensed H II Galaxy at z = 3.357 (open access)

Massive Star Formation in a Gravitationally-Lensed H II Galaxy at z = 3.357

The Lynx arc, with a redshift of 3.357, was discovered during spectroscopic follow-up of the z = 0.570 cluster RX J0848+4456 from the ROSAT Deep Cluster Survey. The arc is characterized by a very red R - K color and strong, narrow emission lines. Analysis of HST WFPC 2 imaging and Keck optical and infrared spectroscopy shows that the arc is an H II galaxy magnified by a factor of {approx} 10 by a complex cluster environment. The high intrinsic luminosity, the emission line spectrum, the absorption components seen in Ly{alpha} and C IV, and the restframe ultraviolet continuum are all consistent with a simple H II region model containing {approx} 10{sup 6} hot O stars. The best fit parameters for this model imply a very hot ionizing continuum (T{sub BB} {approx} 80, 000 K), high ionization parameter (log U {approx} -1), and low nebular metallicity (Z/Z{sub {circle_dot}} {approx} 0.05). The narrowness of the emission lines requires a low mass-to-light ratio for the ionizing stars, suggestive of an extremely low metallicity stellar cluster. The apparent overabundance of silicon in the nebula could indicate enrichment by past pair instability supernovae, requiring stars more massive than {approx}140M{sub {circle_dot}}.
Date: March 2, 2004
Creator: Villar-Martin, M.; Stern, D.; Hook, R. N.; Rosati, P.; Lombardi, M.; Humphrey, A. et al.
Object Type: Article
System: The UNT Digital Library
Environmental Biosciences Program Third Quarter Report (open access)

Environmental Biosciences Program Third Quarter Report

In May 2002, the United States Department of Energy (DOE) signed Assistance Instrument Number DE-FC09-02CH11109 with the Medical University of South Carolina (MUSC) to support the Environmental Biosciences Program (EBP). This funding instrument replaces DOE Assistance Instrument Number DE-FC02-98CH10902. EBP is an integrated, multidisciplinary scientific research program, employing a range of research initiatives to identify, study and resolve environmental health risks. These initiatives are consistent with the MUSC role as a comprehensive state-supported health sciences institution and with the nation's need for new and better approaches to the solution of a complex and expansive array of environment-related health problems. The intrinsic capabilities of a comprehensive health sciences institution enable MUSC to be a national resource for the scientific investigation of environmental health issues. EBPs success as a nationally prominent research program is due, in part, to its ability to task-organize scientific expertise from multiple disciplines in addressing these complex problems Current research projects have focused EBP talent and resources on providing the scientific basis for risk-based standards, risk-based decision making and the accelerated clean-up of widespread environmental hazards. These hazards include trichloroethylene (TCE), polychlorinated biphenyls (PCBs), asbestos and low-dose ionizing radiation. A project is also being conducted in the use …
Date: March 31, 2004
Creator: Mohr, Lawrence C.
Object Type: Text
System: The UNT Digital Library
Proposal letter regarding the Sloan Disgital SKy Survey (open access)

Proposal letter regarding the Sloan Disgital SKy Survey

We would like to propose that Fermilab participate in a three-year extension of operations of the Sloan Digital Sky Survey (SDSS). The SDSS has already provided a wealth of new information about astrophysical and cosmological phenomena, ranging from discoveries of some of the lowest mass stars near the sun to the most distant known quasars. Fermilab scientists have authored or coauthored numerous papers on topics such as the discovery of new structures in the Milky Way halo and detailed studies of galaxy clustering. The detection of the ''shadow of dark energy'' last year by the SDSS shared honors with results from the WMAP satellite as the Discovery of the Year by Science Magazine. Fermilab has had a pivotal role in the creation of the SDSS project and the construction of the data archive, which has already become a valuable resource to the scientific community and to the general public at large. By June of 2005, the SDSS will have completed its nominal five-year period of operations. There is a strong desire among many of the existing SDSS collaborators, including Fermilab, to pursue a three-year extension of operations, both to complete an unfinished portion of the survey area and to pursue …
Date: March 1, 2004
Creator: Kent, Stevens & Kron, Richard
Object Type: Report
System: The UNT Digital Library
Model Action Plan for Nuclear Forensics and Nuclear Attribution (open access)

Model Action Plan for Nuclear Forensics and Nuclear Attribution

Nuclear forensics and nuclear attribution have become increasingly important tools in the fight against illegal trafficking in nuclear and radiological materials. This technical report documents the field of nuclear forensics and nuclear attribution in a comprehensive manner, summarizing tools and procedures that have heretofore been described independently in the scientific literature. This report also provides national policy-makers, decision-makers, and technical managers with guidance for responding to incidents involving the interdiction of nuclear and radiological materials. However, due to the significant capital costs of the equipment and the specialized expertise of the personnel, work in the field of nuclear forensics has been restricted so far to a handful of national and international laboratories. In fact, there are a limited number of specialists who have experience working with interdicted nuclear materials and affiliated evidence. Most of the laboratories that have the requisite equipment, personnel, and experience to perform nuclear forensic analysis are participants in the Nuclear Smuggling International Technical Working Group or ITWG (see Section 1.8). Consequently, there is a need to disseminate information on an appropriate response to incidents of nuclear smuggling, including a comprehensive approach to gathering evidence that meets appropriate legal standards and to developing insights into the source …
Date: March 1, 2004
Creator: Dudder, G B; Niemeyer, S; Smith, D K & Kristo, M J
Object Type: Report
System: The UNT Digital Library
Corrective Action Decision Document for Corrective Action Unit 528: Polychlorinated Biphenyls Contamination, Nevada Test Site, Nevada: Revision 0 (open access)

Corrective Action Decision Document for Corrective Action Unit 528: Polychlorinated Biphenyls Contamination, Nevada Test Site, Nevada: Revision 0

This Corrective Action Decision Document (CADD) identifies and rationalizes the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office's selection of a recommended corrective action alternative appropriate to facilitate the closure of Corrective Action Unit (CAU) 528: Polychlorinated Biphenyls (PCBs) Contamination, Nevada Test Site (NTS), Nevada, under the Federal Facility Agreement and Consent Order. Located in Area 25 of the NTS, CAU 528 consists of one Corrective Action Site (CAS): 25-27-03, Polychlorinated Biphenyls Surface Contamination. Corrective Action Unit 528 was created to address the presence of PCBs around the Test Cell C concrete pad. Corrective action investigation activities were performed from August 24, 2003, through January 8, 2004. The PCBs and total petroleum hydrocarbons-diesel range organics were identified as contaminants of concern in the surface and shallow subsurface soils in 12 areas (Areas 1 through 12) at CAS 25-27-03. Based on the review of existing data, future use, and current operations at the NTS, the following alternatives have been developed for consideration: Alternative 1 - No Further Action; Alternative 2 - Clean Closure; Alternative 3 - Closure in Place with Administrative Controls. The three corrective action alternatives were evaluated on their technical merits, focusing on performance, reliability, feasibility, …
Date: March 15, 2004
Creator: United States. National Nuclear Security Administration. Nevada Site Office.
Object Type: Report
System: The UNT Digital Library
The Beyond the standard model working group: Summary report (open access)

The Beyond the standard model working group: Summary report

In this working group we have investigated a number of aspects of searches for new physics beyond the Standard Model (SM) at the running or planned TeV-scale colliders. For the most part, we have considered hadron colliders, as they will define particle physics at the energy frontier for the next ten years at least. The variety of models for Beyond the Standard Model (BSM) physics has grown immensely. It is clear that only future experiments can provide the needed direction to clarify the correct theory. Thus, our focus has been on exploring the extent to which hadron colliders can discover and study BSM physics in various models. We have placed special emphasis on scenarios in which the new signal might be difficult to find or of a very unexpected nature. For example, in the context of supersymmetry (SUSY), we have considered: how to make fully precise predictions for the Higgs bosons as well as the superparticles of the Minimal Supersymmetric Standard Model (MSSM) (parts III and IV); MSSM scenarios in which most or all SUSY particles have rather large masses (parts V and VI); the ability to sort out the many parameters of the MSSM using a variety of signals …
Date: March 18, 2004
Creator: al., G. Azuelos et
Object Type: Article
System: The UNT Digital Library
Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico. (open access)

Mixed waste landfill corrective measures study final report Sandia National Laboratories, Albuquerque, New Mexico.

The Mixed Waste Landfill occupies 2.6 acres in the north-central portion of Technical Area 3 at Sandia National Laboratories, Albuquerque, New Mexico. The landfill accepted low-level radioactive and mixed waste from March 1959 to December 1988. This report represents the Corrective Measures Study that has been conducted for the Mixed Waste Landfill. The purpose of the study was to identify, develop, and evaluate corrective measures alternatives and recommend the corrective measure(s) to be taken at the site. Based upon detailed evaluation and risk assessment using guidance provided by the U.S. Environmental Protection Agency and the New Mexico Environment Department, the U.S. Department of Energy and Sandia National Laboratories recommend that a vegetative soil cover be deployed as the preferred corrective measure for the Mixed Waste Landfill. The cover would be of sufficient thickness to store precipitation, minimize infiltration and deep percolation, support a healthy vegetative community, and perform with minimal maintenance by emulating the natural analogue ecosystem. There would be no intrusive remedial activities at the site and therefore no potential for exposure to the waste. This alternative poses minimal risk to site workers implementing institutional controls associated with long-term environmental monitoring as well as routine maintenance and surveillance of …
Date: March 1, 2004
Creator: Peace, Gerald (Jerry) L. & Goering, Timothy James (GRAM, Inc., Albuquerque, NM)
Object Type: Report
System: The UNT Digital Library