Resource Type

The Savannah River National Laboratory's Response to the Graniteville, SC Train Accident (open access)

The Savannah River National Laboratory's Response to the Graniteville, SC Train Accident

The Savannah River National Laboratory's (SRNL) Weather INformation and Display (WIND) System was used to provide meteorological and atmospheric modeling/consequence assessment support to state and local agencies following the collision of two Norfolk Southern freight trains on the morning of January 6, 2005. This collision resulted in the release of several toxic chemicals to the environment, including chlorine. The dense and highly toxic cloud of chlorine gas that formed in the vicinity of the accident was responsible for nine fatalities and injuries to more than five hundred others. Transport model results depicting the forecast path of the ongoing release were made available to emergency managers in the county's Unified Command Center shortly after SRNL received a request for assistance. Support continued over the ensuing two days of the active response. The SRNL also provided weather briefings and transport/consequence assessment model results to responders from South Carolina Department of Health and Environmental control (SCDHEC), the Savannah River Site's (SRS) Emergency Operations Center (EOC), DOE Headquarters, and hazmat teams dispatched from the SRS.
Date: October 21, 2005
Creator: Hunter, C. H.; Parker, M. J.; Buckley, R. L.; Weber, A. H. & Addis, R. P.
System: The UNT Digital Library
Cybersecurity Challenges in the Era of Open Access and BIG Data: Issues and Considerations (open access)

Cybersecurity Challenges in the Era of Open Access and BIG Data: Issues and Considerations

Article from a panel held at the American Society for Information Science and Technology (ASIS&T) 2019 pre-conference held on October 19, 2019 in Melbourne, Australia. The panelists discussed cybersecurity challenges and provided an assessment of the cybersecurity issues related to open access and big data.
Date: October 19, 2019
Creator: Alemneh, Daniel Gelaw; Chang, Hsia-Ching; Hawamdeh, Suliman M.; Rorissa, Abebe & Assefa, Shimelis
System: The UNT Digital Library
Using representational and abstract imagery to createregulatory fit effects (open access)

Using representational and abstract imagery to createregulatory fit effects

Article asserts that visual imagery is one of the most important methods of communicating with consumers, but scholars have generally neglected the role of different forms of visual imagery (representational and abstract). The authors demonstrate that prevention-focused versus promotion-focused mindsets guide the interpretation of meanings conveyed by representational versus abstract visual imagery as a nonverbal means to achieve regulatory fit.
Date: October 19, 2023
Creator: Naletelich, Kelly; Ketron, Seth; Spears, Nancy & Gelves, J. Alejandro
System: The UNT Digital Library
Disaster Recovery Plan for the Hanford Technical Library (open access)

Disaster Recovery Plan for the Hanford Technical Library

The Disaster Recovery Plan for the Hanford Technical Library is adapted from one developed at New York University. The focus is on any disaster involving water damage, such as flood or fire, because quick action is needed to prevent wet materials from mold and mildew. The plan addresses three distinct sets of activities; prevention, which involves surveying and improving facilities to reduce the potential for accident; emergency preparedness, which requires educating staff and assembling supplies and equipment; and salvage or recovery planning, which establishes a sequence of procedures and assigns specific responsibilities to be carried out in response to particular problems. This Disaster Recovery Plan is for library material only. DOE-RL has a different procedure for record material.
Date: October 1, 1992
Creator: Rizzuti-Hare, J. L.
System: The UNT Digital Library
Disaster Recovery Plan for the Hanford Technical Library (open access)

Disaster Recovery Plan for the Hanford Technical Library

The Disaster Recovery Plan for the Hanford Technical Library is adapted from one developed at New York University. The focus is on any disaster involving water damage, such as flood or fire, because quick action is needed to prevent wet materials from mold and mildew. The plan addresses three distinct sets of activities; prevention, which involves surveying and improving facilities to reduce the potential for accident; emergency preparedness, which requires educating staff and assembling supplies and equipment; and salvage or recovery planning, which establishes a sequence of procedures and assigns specific responsibilities to be carried out in response to particular problems. This Disaster Recovery Plan is for library material only. DOE-RL has a different procedure for record material.
Date: October 1, 1992
Creator: Rizzuti-Hare, J. L.
System: The UNT Digital Library
Performance of the SLD Warm Iron Calorimeter Pre-Prototype (open access)

Performance of the SLD Warm Iron Calorimeter Pre-Prototype

The performance of a pre-prototype of the SLD Warm Iron Calorimeter (WIC) build with proportional tube cathode pad readout has been studied. The calorimeter was found to have an average resolution of 36.7 +- 0.2% for muons at 2.0, 5.0 and 10.5 GeV and 81 +- 2%/..sqrt..E for pion showers at 5.0 and 10.5 GeV. The mean energy found for the pion showers was consistent with a linear dependence on energy within these standard deviations. 4 refs., 6 figs., 3 tabs.
Date: October 1, 1985
Creator: Johnson, A. S.; Busza, W.; Friedman, J.; Kendall, H.; Kistiakowsky, V.; Lyons, T. et al.
System: The UNT Digital Library
Skill-Building in Online Metadata Instruction: Quality Evaluation of Student-Created Metadata (open access)

Skill-Building in Online Metadata Instruction: Quality Evaluation of Student-Created Metadata

Paper addressing the need for effective training in metadata creation for library and information science students through an overview of the metadata creation skill-building content of the online introductory graduate metadata course at the University of North Texas, results of the analysis of quality in student-created metadata records, and discussion of how the observed common metadata quality issues might inform curriculum development.
Date: October 9, 2020
Creator: Zavalina, Oksana & Burke, Mary
System: The UNT Digital Library
Packaging and distributing ecological data from multisite studies (open access)

Packaging and distributing ecological data from multisite studies

Studies of global change and other regional issues depend on ecological data collected at multiple study areas or sites. An information system model is proposed for compiling diverse data from dispersed sources so that the data are consistent, complete, and readily available. The model includes investigators who collect and analyze field measurements, science teams that synthesize data, a project information system that collates data, a data archive center that distributes data to secondary users, and a master data directory that provides broader searching opportunities. Special attention to format consistency is required, such as units of measure, spatial coordinates, dates, and notation for missing values. Often data may need to be enhanced by estimating missing values, aggregating to common temporal units, or adding other related data such as climatic and soils data. Full documentation, an efficient data distribution mechanism, and an equitable way to acknowledge the original source of data are also required.
Date: October 1, 1996
Creator: Olson, R. J.; Voorhees, L. D.; Field, J. M. & Gentry, M. J.
System: The UNT Digital Library
The Holdup Measurement System II (HMSII) (open access)

The Holdup Measurement System II (HMSII)

A project is in progress that addresses two of problems with existing holdup measurement technology; the need for compact instrumentation and a more efficient means of reducing the massive amounts of data to quantities of Special Nuclear Materials (SNM). The approach taken by the project utilizes the Miniature Modular MultiChannel Analyzer (M{sup 3}CA) a complete and truly portable gamma-ray spectroscopy system, under development at Los Alamos National Laboratory. The hardware is then integrated and automated by the Holdup Measurement System II (HMSII) software being developed by the Oak Ridge Y-12 Plant. Together they provide the hardware components, measurement control in the field, automated data acquisition, data storage and manipulation which simplify holdup measurements.
Date: October 4, 1994
Creator: Finch, T. L.; Gibson, J. S.; Smith, S. E.; Halbig, J. K.; Klosterbuer, S. F.; Russo, P. A. et al.
System: The UNT Digital Library
Diii-D Plasma Control Simulation Environment (open access)

Diii-D Plasma Control Simulation Environment

OAK-B135 Many advanced have been made to the DIII-D plasma control simulation environment since the previously developed hardware-in-the-loop plasma shape simulation capability was reported. In the present paper they summarize the major improvements to this simulation environment, including, introduction of the non-linear plasma evolution code DINA. Comparisons with DIII-D experimental results are presented. Recent model developments in advanced neoclassical tearing mode (NTM) and resistive wall mode (RWM) control are presented.
Date: October 1, 2003
Creator: Leuer, J. A.; Deranian, R. D.; Ferron, J. R.; Humphreys, D. A.; Johnson, R. D.; Penaflor, B. G. et al.
System: The UNT Digital Library
{sup 14}C-AMS quantification of biomolecular interactions using microbore and plate separations (open access)

{sup 14}C-AMS quantification of biomolecular interactions using microbore and plate separations

AMS sensitivity arises from the direct counting of radioisotopes without interference from molecular isobars. No chemical or physical information other than a bulk isotope ratio is available from the usual AMS instrument. Chemical or biological significance of the isotope ratio depends on the definition of the sample prior to conversion to material used in the ion source. The authors use AMS to quantify biochemical interactions between labeled xenobiotics and their potential targets of toxicity. These potential target molecules are separated and defined by various types of plate and microbore separations, including thin layer chromatography (TLC), high performance liquid chromatography (HPLC) and gel electrophoresis (GE) in quantifying the binding of {sup 14}C-labeled compounds to specific DNA and protein fragments. They discuss their methods of using these microbore and plate separations of biomolecules while controlling contamination from {sup 14}C in laboratory equipment and give examples.
Date: October 20, 1993
Creator: Creek, M. R.; Frantz, C. E.; Fultz, E.; Haack, K.; Redwine, K.; Shen, N. et al.
System: The UNT Digital Library
Discussion: Reporting and calibration of post-bomb 14C data (open access)

Discussion: Reporting and calibration of post-bomb 14C data

The definitive paper by Stuiver and Polach (1977) established the conventions for reporting of {sup 14}C data for chronological and geophysical studies based on the radioactive decay of {sup 14}C in the sample since the year of sample death or formation. Several ways of reporting {sup 14}C activity levels relative to a standard were also established, but no specific instructions were given for reporting nuclear weapons testing (post-bomb) {sup 14}C levels in samples. Because the use of post-bomb {sup 14}C is becoming more prevalent in forensics, biology, and geosciences, a convention needs to be adopted. We advocate the use of fraction modern with a new symbol F{sup 14}C to prevent confusion with the previously used Fm, which may or may not have been fractionation corrected. We also discuss the calibration of post-bomb {sup 14}C samples and the available datasets and compilations, but do not give a recommendation for a particular dataset.
Date: October 11, 2004
Creator: Reimer, P J; Brown, T A & Reimer, R W
System: The UNT Digital Library
Introduction to the SI Library of unit-based computation (open access)

Introduction to the SI Library of unit-based computation

To address current deplorable practices in numeric computation, we set out to develop a software subsystem to provide a convenient means of expressing, computing with, and displaying numeric values with attached units, thus obtaining the well-known bene#12;ts of type safety consistent with recommended unit-based practices of long standing. An additional requirement of this project was to ensure strict compile-time type-checking without run-time overhead (i.e., at no run-time cost in time or in space). More speci#12;cally, we sought 1. application of current software technology to numeric physical concepts, 2. convenience of expression in such application, 3. general utility rooted in existing standards, 4. use of nomenclature from our problem domain, and 5. no attendant performance penalties! The present project, known as The SI Library of Unit-based Computation, has succeeded in addressing these requirements. The resulting software module (known hereinafter as the SI Library or, simply, the Library ) meets (and, in many respects, greatly exceeds!) all its goals and is intended for contribution (for non-commercial use) to the FPCLTF (\Zoom") project library at Fermilab.
Date: October 1, 1998
Creator: Brown, Walter E.
System: The UNT Digital Library
Software management at Fermilab (open access)

Software management at Fermilab

We describe the structure and performance of a software management system in wide use at Fermilab. The system provides software version control with Con- current Versions System (CVS) con#12;gured in a client-server mode. Management and building of software is provided by Software Release Tools (SoftRelTools) originally developed by the BaBar collaboration. Support for SoftRelTools, the heart of the system, is organized by the Fermilab computing division in close communication with the end users: CDF, D0, BTeV and CMS. Unix Product Support (UPS) is used to initialize environmental variables for multiple versions of software on multiple platforms. Distribution of frozen releases is currently handled by internally developed scripts, but will soon be performed by Unix Product Distribution (UPD). At CDF the development version of the software is also distributed daily and built in place on 18 di#11;erent machines, with new machines added weekly. Although primarily intended for UNIX platforms, in- cluding Linux, the system is also supported for Windows NT by D0. This system handles the version control, management, building, and distri- bution of code written in Fortran, C, and C++. A single executable can call routines written in all three languages. A distinguishing feature of the system is its ability …
Date: October 1, 1998
Creator: Harris, Robert M.
System: The UNT Digital Library
Europium-doped barium bromide iodide (open access)

Europium-doped barium bromide iodide

Single crystals of Ba0.96Eu0.04BrI (barium europium bromide iodide) were grown by the Bridgman technique. The title compound adopts the ordered PbCl2 structure [Braekken (1932). Z. Kristallogr. 83, 222-282]. All atoms occupy the fourfold special positions (4c, site symmetry m) of the space group Pnma with a statistical distribution of Ba and Eu. They lie on the mirror planes, perpendicular to the b axis at y = +-0.25. Each cation is coordinated by nine anions in a tricapped trigonal prismatic arrangement.
Date: October 21, 2009
Creator: Gundiah, Gautam; Hanrahan, Stephen M.; Hollander, Fredrick J. & Bourret-Courchesne, Edith D.
System: The UNT Digital Library
Oximes as Inhibitors of Acetylcholinesterase: A Structure Activity Relationship Study (open access)

Oximes as Inhibitors of Acetylcholinesterase: A Structure Activity Relationship Study

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Date: October 19, 2011
Creator: Sepsova, V.; Karasova, J.; Zemek, F.; Bennion, B. & Kuca, K.
System: The UNT Digital Library
Best Practices for Managing Organizational Diversity (open access)

Best Practices for Managing Organizational Diversity

Organizations with increasingly diverse workforces and customer populations face challenges in reaping diversity's benefits while managing its potentially disruptive effects. This article defines workplace diversity and identifies best practices supporting planned and positive diversity management. It explores how academic libraries can apply diversity management best practices and provides a reading list for leaders and human resource managers wishing to optimize their organization's approach to diversity.
Date: October 15, 2007
Creator: Kreitz, Patricia
System: The UNT Digital Library
A survey of tracer gas techniques for estimation airflow and effective volumes in single and multizone buildings (open access)

A survey of tracer gas techniques for estimation airflow and effective volumes in single and multizone buildings

This paper briefly describes the development of tracer gas techniques. These techniques were introduced over 50 years ago and have evolved into a number of distinct methods. These methods are often tailored to a specific application or to obtain particular information about the flow and volume system. Single-zone techniques are utilized when the structure or zone is relatively well-mixed and can be characterized by a single concentration measurement. Areas or rooms within a single-family residence can sometimes be closely approximated as one well-mixed zone. Multizone techniques are required when the building is composed of two or more zones which communicate with one another through interzonal airflows. Commercial office buildings are usually multizone systems. This paper focuses on single and multiple gas tracer techniques. Traditionally, multizone systems have been analyzed by using a different tracer for each zone. These techniques require equipment capable of accurately injecting and detecting each of the tracers which can be cumbersome in large order systems. Recently, a number of methods have been proposed which use a single tracer gas to estimate flow and effective volumes in multizone systems. 24 refs., 2 figs., 1 tab.
Date: October 1, 1990
Creator: O'Neill, P.J.
System: The UNT Digital Library
Impact of instrument response variations on health physics measurements (open access)

Impact of instrument response variations on health physics measurements

Uncertainties in estimating the potential health impact of a given radiation exposure include instrument measurement error in determining exposure and difficulty in relating this exposure to an effective dose value. Instrument error can be due to design or manufacturing deficiencies, limitations of the sensing element used, and calibration and maintenance of the instrument. This paper evaluates the errors which can be introduced by design deficiencies and limitations of the sensing element for a wide variety of commonly used survey instruments. The results indicate little difference among sensing element choice for general survey work, with variations among specific instrument designs being the major factor. Ion chamber instruments tend to be the best for all around use, while scintillator-based units should not be used where accurate measurements are required. The need to properly calibrate and maintain an instrument appears to be the most important factor in instrument accuracy. 8 references, 6 tables.
Date: October 1, 1984
Creator: Armantrout, Guy A.
System: The UNT Digital Library
Privacy: The Small and Large of It (open access)

Privacy: The Small and Large of It

The topic of Privacy is complex, multi-faceted, and often emotionally laden. This paper will cover the following topics, in an effort to further understanding of federal regulations and activities, the balancing act that necessarily occurs in business, and what role a records manager can play. The topics are: Definitions; The Privacy Act; ''Private'' companies; Potential areas of concern; Expectations; Corporate responsibilities; Case studies; and Records Manager's role.
Date: October 22, 1999
Creator: NUSBAUM,ANNA W.
System: The UNT Digital Library
Detonation product equation-of-state directly from the cylinder test (open access)

Detonation product equation-of-state directly from the cylinder test

A quasi-analytic method is presented for obtaining the detonation-product expansion isentrope directly from cylinder test data. The idea actually dates to G.I. Taylor`s invention of the cylinder test--though he did not implement it for lack of data--but has received little attention since. The method uses the fact that the pressure may be determined from the measured wall trajectory, whereupon the associated specific volume follows from the equations of continuity and momentum. Using the HMX-based explosive PBX9501 as an example, the method makes a good prediction of the detonation pressure and the basic form of {gamma}, the isentropic exponent. However, the model isentrope is slightly low in the mid-range, perhaps because the standard cylinder test is not optimal for this analysis. A better-suited design is proposed, and a simple ad-hoc correction is offered that reconciles the standard test.
Date: October 1, 1997
Creator: Hill, L.G.
System: The UNT Digital Library
Early days in the Lawrence Laboratory. [Through 1940] (open access)

Early days in the Lawrence Laboratory. [Through 1940]

Events at the Lawrence Radiation Laboratory at Berkeley to the end of 1940 are recalled. Radiation detection, discovery of new isotopes and elements, and accelerators are among the subjects included. 29 photographs. (RWR)
Date: October 1, 1976
Creator: McMillan, E. M.
System: The UNT Digital Library
Experience with CANDID: Comparison algorithm for navigating digital image databases (open access)

Experience with CANDID: Comparison algorithm for navigating digital image databases

This paper presents results from the authors experience with CANDID (Comparison Algorithm for Navigating Digital Image Databases), which was designed to facilitate image retrieval by content using a query-by-example methodology. A global signature describing the texture, shape, or color content is first computed for every image stored in a database, and a normalized similarity measure between probability density functions of feature vectors is used to match signatures. This method can be used to retrieve images from a database that are similar to a user-provided example image. Results for three test applications are included.
Date: October 1, 1994
Creator: Kelly, P. & Cannon, M.
System: The UNT Digital Library
Top quark physics (open access)

Top quark physics

While the top quark was discovered in 1995 at the Fermilab Tevatron, a decade later they still have very little information about the top. As the heaviest particle yet discovered, the top quark is interesting in and of itself, but some speculate that it may play a special role in physics beyond the Standard Model. With Run 2 of the Tevatron well underway, they have the opportunity to study top quark properties with much better sensitivity, and to test whether top quarks behave as predicted by current theories. This article focuses on the basics of top quark physics at the Tevatron, highlighting only a sample of the many recent measurements, as new results are being released monthly, and constantly changing the landscape of our knowledge of top.
Date: October 1, 2005
Creator: Erbacher, Robin D.
System: The UNT Digital Library