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Critical Infrastructure Protection Decision Support System Decision Model : Overview and Quick-Start User's Guide.
The Critical Infrastructure Protection Decision Support System Decision Model (CIPDSS-DM) is a useful tool for comparing the effectiveness of alternative risk-mitigation strategies on the basis of CIPDSS consequence scenarios. The model is designed to assist analysts and policy makers in evaluating and selecting the most effective risk-mitigation strategies, as affected by the importance assigned to various impact measures and the likelihood of an incident. A typical CIPDSS-DM decision map plots the relative preference of alternative risk-mitigation options versus the annual probability of an undesired incident occurring once during the protective life of the investment, assumed to be 20 years. The model also enables other types of comparisons, including a decision map that isolates a selected impact variable and displays the relative preference for the options of interest--parameterized on the basis of the contribution of the isolated variable to total impact, as well as the likelihood of the incident. Satisfaction/regret analysis further assists the analyst or policy maker in evaluating the confidence with which one option can be selected over another.
Date:
December 1, 2008
Creator:
Samsa, M.; Van Kuiken, J.; Jusko, M. & Sciences, Decision and Information
Object Type:
Report
System:
The UNT Digital Library
The Cross Timbers Gazette (Bartonville, Tex.), Vol. [34], No. [12], Ed. 1, December 2008
Monthly newspaper from Bartonville, Texas that includes news and information for communities in southern Denton County along with advertising.
Date:
December 2008
Creator:
Miller, Max
Object Type:
Newspaper
System:
The Portal to Texas History
Cumulative Increment Analysis for the Breton National Wilderness Area
The final report of the a study performed in the Gulf of Mexico Outer Continental Shelf Region, analyzing the SO2 and NO2 increment for the Brenton National Wilderness Area.
Date:
December 2008
Creator:
Wheeler, Neil J. M.; Reid, Stephen B.; Craig, Kenneth J.; Zielonka, Jeffrey R.; Stauffer, David R. & Hanna, Steven R.
Object Type:
Text
System:
The UNT Digital Library
The Current and Potential Economic and Fiscal Impacts of Texas' Moving Media Industry
This report compares the film industry incentive programs of other states with the Texas incentive program and examines their respective economic and fiscal impacts. In Texas, the economic impact of the moving media industry approached $345 million in 2007. This report also identifies strategies proposed to enhance Texas' future competitive position in the moving media industry.
Date:
December 1, 2008
Creator:
Weinstein, Bernard L.; Clower, Terry L. & Seman, Michael
Object Type:
Report
System:
The UNT Digital Library
Current Status and Future Scenarios of Residential Building Energy Consumption in China
China's rapid economic expansion has propelled it into the ranks of the largest energy consuming nation in the world, with energy demand growth continuing at a pace commensurate with its economic growth. Even though the rapid growth is largely attributable to heavy industry, this in turn is driven by rapid urbanization process, by construction materials and equipment produced for use in buildings. Residential energy is mostly used in urban areas, where rising incomes have allowed acquisition of home appliances, as well as increased use of heating in southern China. The urban population is expected to grow by 20 million every year, accompanied by construction of 2 billion square meters of buildings every year through 2020. Thus residential energy use is very likely to continue its very rapid growth. Understanding the underlying drivers of this growth helps to identify the key areas to analyze energy efficiency potential, appropriate policies to reduce energy use, as well as to understand future energy in the building sector. This paper provides a detailed, bottom-up analysis of residential building energy consumption in China using data from a wide variety of sources and a modeling effort that relies on a very detailed characterization of China's energy demand. …
Date:
December 1, 2008
Creator:
Zhou, Nan; Nishida, Masaru & Gao, Weijun
Object Type:
Report
System:
The UNT Digital Library
D0 SUSY/BSM searches
We report on D0 searches for supersymmetry (SUSY) at the TEVATRON Run II. Analyses with data samples in the following range of integrated luminosities 1 < {integral} Ldt < 2.1 fb{sup -1} are summarized. These searches look for different production processes and decay channels in gravity and gauge mediated SUSY breaking models. No excess of observed events is found with respect to the Standard Model (SM) predictions, therefore a series of exclusion limits at the 95% confidence level (C.L.) are drawn.
Date:
December 1, 2008
Creator:
Muanza, Steve
Object Type:
Article
System:
The UNT Digital Library
Dawn in the Empty House
The preface to this collection of poems, "Memory and The Myth of Lost Truth," explores the physical and metaphysical roles memory plays within poetry. It examines the melancholy frequently birthed from a particular kind poetic self-inquiry, or, more specifically, the feelings associated with recognizing the self's inability to re-inhabit the emotional experience of past events, and how poetry can redeem, via engaging our symbolic intuition, the faultiness of remembered history. Dawn in the Empty House is a collection of poems about the implications of human relationships, self-deception, and memory as a tool for self-discovery.
Date:
December 2008
Creator:
Campbell, John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Demographic Study of Texas Lottery Players: 2008
This report provides the results of a random survey of adult Texas residents aged 18 and older to measure the citizen participation rates, the distribution and frequency of play, and the demographic profiles of the past-year lottery players and non-players.
Date:
December 1, 2008
Creator:
University of Houston. Center for Public Policy.
Object Type:
Report
System:
The Portal to Texas History
Demonstration of Mer-Cure Technology for Enhanced Mercury Control: Final Report
Alstom Power Inc. has completed a DOE/NETL-sponsored program (under DOE Cooperative Agreement No. De-FC26-07NT42776) to demonstrate Mer-Cure{trademark}, one of Alstom's mercury control technologies for coal-fired boilers. The Mer-Cure{trademark}system utilizes a small amount of Mer-Clean{trademark} sorbent that is injected into the flue gas stream for oxidation and adsorption of gaseous mercury. Mer-Clean{trademark} sorbents are carbon-based and prepared with chemical additives that promote oxidation and capture of mercury. The Mer-Cure{trademark} system is unique in that the sorbent is injected into an environment where the mercury capture kinetics is accelerated. The full-scale demonstration program originally included test campaigns at two host sites: LCRA's 480-MW{sub e} Fayette Unit No.3 and Reliant Energy's 190-MW{sub e} Shawville Unit No.3. The only demonstration tests actually done were the short-term tests at LCRA due to budget constraints. This report gives a summary of the demonstration testing at Fayette Unit No.3. The goals for this Mercury Round 3 program, established by DOE/NETL under the original solicitation, were to reduce the uncontrolled mercury emissions by 90% at a cost significantly less than 50% of the previous target of $60,000/lb mercury removed. The results indicated that Mer-Cure{trademark} technology could achieve mercury removal of 90% based on uncontrolled stack emissions. The estimated …
Date:
December 1, 2008
Creator:
Marion, John; O'Neill, Dave; Taugher, Kevin; Kang, Shin; Johnson, Mark; Pargac, Gerald et al.
Object Type:
Report
System:
The UNT Digital Library
Designing Safe Lithium-Ion Battery Packs Using Thermal Abuse Models (Presentation)
NREL and NASA developed a thermal-electrical model that resolves PTC and cell behavior under external shorting, now being used to evaluate safety margins of battery packs for spacesuit applications.
Date:
December 1, 2008
Creator:
Pesaran, A. A.; Kim, G. H.; Smith, K. & Darcy, E.
Object Type:
Presentation
System:
The UNT Digital Library
Development of high performance scientific components for interoperability of computing packages
Three major high performance quantum chemistry computational packages, NWChem, GAMESS and MPQC have been developed by different research efforts following different design patterns. The goal is to achieve interoperability among these packages by overcoming the challenges caused by the different communication patterns and software design of each of these packages. A chemistry algorithm is hard to develop as well as being a time consuming process; integration of large quantum chemistry packages will allow resource sharing and thus avoid reinvention of the wheel. Creating connections between these incompatible packages is the major motivation of the proposed work. This interoperability is achieved by bringing the benefits of Component Based Software Engineering through a plug-and-play component framework called Common Component Architecture (CCA). In this thesis, I present a strategy and process used for interfacing two widely used and important computational chemistry methodologies: Quantum Mechanics and Molecular Mechanics. To show the feasibility of the proposed approach the Tuning and Analysis Utility (TAU) has been coupled with NWChem code and its CCA components. Results show that the overhead is negligible when compared to the ease and potential of organizing and coping with large-scale software applications.
Date:
December 1, 2008
Creator:
Gulabani, Teena Pratap
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Diffusion across the digital divide: Assessing use of the Connecticut Digital Library (ICONN) in K-12 schools in Connecticut.
State digital libraries are manifestations of the diffusion of technology that has provided both access to and delivery of digital content. Whether the content is being accessed and used equitably in K-12 schools has not been assessed. Determining patterns of the diffusion of use across socioeconomic groups in K-12 schools may help measure the success of existing efforts to provide equitable access and use of digital content, and help guide policies and implementation to more effectively address remaining disparities. This study examined use of the Connecticut Digital Library (ICONN) in K-12 schools in Connecticut by determining annual patterns of use per school/district over a four-year period, using transaction log search statistics. The data were analyzed in the paradigm that Rogers (2003) describes as the first and second dimensions of the consequences of an innovation - the overall growth and the equality of the diffusion to individuals within an intended audience --- in this case, students in K-12 schools. Data were compared by school district and the established socioeconomic District Reference Groups (DRGs) defined by the Connecticut State Board of Education. At the time of this study, ICONN used aggregate data (total searches) for K-12 schools, but did not have relevant …
Date:
December 2008
Creator:
Bogel, Gayle
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Direct Online/Offline Digital Signature Schemes.
Online/offline signature schemes are useful in many situations, and two such scenarios are considered in this dissertation: bursty server authentication and embedded device authentication. In this dissertation, new techniques for online/offline signing are introduced, those are applied in a variety of ways for creating online/offline signature schemes, and five different online/offline signature schemes that are proved secure under a variety of models and assumptions are proposed. Two of the proposed five schemes have the best offline or best online performance of any currently known technique, and are particularly well-suited for the scenarios that are considered in this dissertation. To determine if the proposed schemes provide the expected practical improvements, a series of experiments were conducted comparing the proposed schemes with each other and with other state-of-the-art schemes in this area, both on a desktop class computer, and under AVR Studio, a simulation platform for an 8-bit processor that is popular for embedded systems. Under AVR Studio, the proposed SGE scheme using a typical key size for the embedded device authentication scenario, can complete the offline phase in about 24 seconds and then produce a signature (the online phase) in 15 milliseconds, which is the best offline performance of any known …
Date:
December 2008
Creator:
Yu, Ping
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A dual neutron/gamma source for the Fissmat Inspection for Nuclear Detection (FIND) system.
Shielded special nuclear material (SNM) is very difficult to detect and new technologies are needed to clear alarms and verify the presence of SNM. High-energy photons and neutrons can be used to actively interrogate for heavily shielded SNM, such as highly enriched uranium (HEU), since neutrons can penetrate gamma-ray shielding and gamma-rays can penetrate neutron shielding. Both source particles then induce unique detectable signals from fission. In this LDRD, we explored a new type of interrogation source that uses low-energy proton- or deuteron-induced nuclear reactions to generate high fluxes of mono-energetic gammas or neutrons. Accelerator-based experiments, computational studies, and prototype source tests were performed to obtain a better understanding of (1) the flux requirements, (2) fission-induced signals, background, and interferences, and (3) operational performance of the source. The results of this research led to the development and testing of an axial-type gamma tube source and the design/construction of a high power coaxial-type gamma generator based on the {sup 11}B(p,{gamma}){sup 12}C nuclear reaction.
Date:
December 1, 2008
Creator:
Doyle, Barney Lee (Sandia National Laboratories, Albuquerque, NM); King, Michael; Rossi, Paolo (Sandia National Laboratories, Albuquerque, NM); McDaniel, Floyd Del (Sandia National Laboratories, Albuquerque, NM); Morse, Daniel Henry; Antolak, Arlyn J. et al.
Object Type:
Report
System:
The UNT Digital Library
Dynamic Systems Analysis Report for Nuclear Fuel Recycle
This report examines the time-dependent dynamics of transitioning from the current United States (U.S.) nuclear fuel cycle where used nuclear fuel is disposed in a repository to a closed fuel cycle where the used fuel is recycled and only fission products and waste are disposed. The report is intended to help inform policy developers, decision makers, and program managers of system-level options and constraints as they guide the formulation and implementation of advanced fuel cycle development and demonstration efforts and move toward deployment of nuclear fuel recycling infrastructure.
Date:
December 1, 2008
Creator:
Dixon, Brent; Kim, Sonny; Shropshire, David; Piet, Steven; Matthern, Gretchen & Halsey, Bill
Object Type:
Report
System:
The UNT Digital Library
The Effect of Ethnicity on the Age-of-onset of the Male Voice Change.
The purposes of this study were to describe the characteristics of the changing male voice in 4th, 5th and 6th grade students using Cooksey's maturation stages and, to compare the age-of-onset of the male voice change in African American, White, and Hispanic male students. Participants included volunteer 4th (n = 61), 5th (n = 73), and 6th grade male students (n = 63) from 2 urban elementary schools, 5 suburban elementary schools, 1 suburban middle school and 1 urban middle school in the North Texas region. The three ethnic groups represented in this study were: African American (n = 62), White (n = 58), and Hispanic (n = 77). Results indicated that approximately 46% of 4th grade participants, 62% of 5th grade participants, and 67% of 6th grade participants were classified as changing voices. A descriptively larger percentage of African American participants were classified as changing voices than Hispanic and White participants. Also, a larger percentage of African American and Hispanic participants were descriptively classified in the more advanced stages of the voice change than White participants. Urban African American, White, and Hispanic participants had a larger percentage of males classified as changing voices than suburban African American, White, and …
Date:
December 2008
Creator:
Fisher, Ryan Austin
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effect of Heat and Electricity Storage and Reliability on Microgrid Viability:A Study of Commercial Buildings in California and New York States
In past work, Berkeley Lab has developed the Distributed Energy Resources Customer Adoption Model (DER-CAM). Given end-use energy details for a facility, a description of its economic environment and a menu of available equipment, DER-CAM finds the optimal investment portfolio and its operating schedule which together minimize the cost of meeting site service, e.g., cooling, heating, requirements. Past studies have considered combined heat and power (CHP) technologies. Methods and software have been developed to solve this problem, finding optimal solutions which take simultaneity into account. This project aims to extend on those prior capabilities in two key dimensions. In this research storage technologies have been added as well as power quality and reliability (PQR) features that provide the ability to value the additional indirect reliability benefit derived from Consortium for Electricity Reliability Technology Solutions (CERTS) Microgrid capability. This project is intended to determine how attractive on-site generation becomes to a medium-sized commercial site if economical storage (both electrical and thermal), CHP opportunities, and PQR benefits are provided in addition to avoiding electricity purchases. On-site electrical storage, generators, and the ability to seamlessly connect and disconnect from utility service would provide the facility with ride-through capability for minor grid disturbances. Three …
Date:
December 1, 2008
Creator:
Stadler, Michael; Marnay, Chris; Siddiqui, Afzal; Lai, Judy; Coffey, Brian & Aki, Hirohisa
Object Type:
Report
System:
The UNT Digital Library
Effects of Fixed- and Variable-Ratio Token Exchange Schedules on Performance with Children with Autism
The research literature with nonhumans supports findings that token economies are a common component of training programs. The literature suggests that the schedule by which exchange opportunities become available determines the organization of behavioral performances in token economies to a great extent. This study sought to systematically document whether the dynamics observed in basic laboratory procedures will also be observed in a child diagnosed with autism spectrum disorders and whether altering schedules by which the exchange opportunities become available will attenuate these effects. The participant was exposed to two conditions: 1) a fixed token-production schedule (FR1) with a fixed token-exchange schedule (FR5) and 2) a fixed token-production schedule (FR1) with a variable token-exchange schedule (VR5). Results of the current study did not lend themselves to draw definitive conclusions that the patterns of responding observed in this experiment were in fact due to the change in the token exchange schedule.
Date:
December 2008
Creator:
Greaves, Stephanie A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of Minimum Quantity Lubrication in Drilling 1018 Steel.
A common goal for industrial manufacturers is to create a safer working environment and reduce production costs. One common method to achieve this goal is to drastically reduce cutting fluid use in machining. Recent advances in machining technologies have made it possible to perform machining with minimum-quantity lubrication (MQL). Drilling takes a key position in the realization of MQL machining. In this study the effects of using MQL in drilling AISI 1018 steel with HSS tools using a vegetable based lubricant were investigated. A full factorial experiment was conducted and regression models were generated for both surface finish and hole size. Lower surface roughness and higher tool life were observed in the lowest speed and feed rate combination.
Date:
December 2008
Creator:
Shaikh, Vasim
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Pre-Kindergarten on Spanish-Speaking Bilingual Students Taking the Third Grade TAKS Reading Test
The purpose of this dissertation is to provide research and data examining the impact of pre-kindergarten on Spanish-speaking ESL students on the third grade TAKS Reading test scores. The two questions that guided this study are: (1) As measured by the third grade TAKS reading test, what is the relationship between those limited english proficient (LEP) Spanish-speaking children who attended a pre-kindergarten program and those who did not attend a pre-kindergarten program? and (2) As measured by the third grade TAKS Reading test, how do the test scores of those LEP Spanish-speaking third graders who attended the district's pre-k program in 2000-2001 and testing in 2005, differ from those who attended the district's pre-k program in 2001-2002 and testing in 2006? The research study used a quantitative methodology designed as causal-comparative analysis. Independent t-tests were used to determine if there were any significant differences in test scores of third graders between the two groups of students. Although the results of the statistical analysis revealed some isolated statistically significant differences between those Spanish-speaking bilingual students who attended pre-kindergarten and those who did not, the data showed no real differences in the test scores of those students.
Date:
December 2008
Creator:
Ringhauser, John T.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Ego development and theoretical orientation among counseling students.
This study investigated potential relationships between master's level counseling students' levels of ego development and their identified orientations to one of six guiding theories of counseling; students' theoretical orientation classifications when classified according to the theory's domain of emphasis: affective, behavioral, or cognitive; students' degrees of confidence in identifying their theoretical orientations; and students' degrees of comfort in applying their theories in clinical practice. Seventy participants enrolled in a master's level practicum course completed the Washington University Sentence Completion Test, a measure of ego development, and the Counseling Theory Survey, a survey developed by the researcher, in order to identify students' identified theoretical orientations, students' degrees of confidence in identifying their theoretical orientations, and students' degrees of comfort in applying their theories in clinical practice. Ego development level was operationalized as a dichotomous variable consisting of level E5 and below and E6 and above, based on the developmental task attained at E6: a shift from emphasis on in-group identity to self-evaluated standards. To determine potential relationships between the students' ego development levels and their theoretical orientations and their orientations when classified by domain of emphasis, 2 x 4 and 2 x 3 Chi-square analyses were used. Independent t-tests were conducted …
Date:
December 2008
Creator:
Warren, Edward Scott
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Employment of dual frequency excitation method to improve the accuracy of an optical current sensor, by measuring both current and temperature.
Optical current sensors (OCSs) are initially developed to measure relatively large current over a wide range of frequency band. They are also used as protective devices in the event a fault occurs due to a short circuit, in the power generation and distribution industries. The basic principal used in OCS is the Faraday effect. When a light guiding faraday medium is placed in a magnetic field which is produced by the current flowing in the conductor around the magnetic core, the plane of polarization of the linearly polarized light is rotated. The angle of rotation is proportional to the magnetic field strength, proportionality constant and the interaction length. The proportionality constant is the Verdet constant V (λ, T), which is dependent on both temperature and wavelength of the light. Opto electrical methods are used to measure the angle of rotation of the polarization plane. By measuring the angle the current flowing in the current carrying conductor can be calculated. But the accuracy of the OCS is lost of the angle of rotation of the polarization plane is dependent on the Verdet constant, apart from the magnetic field strength. As temperature increases the Verdet constant decreases, so the angle of rotation …
Date:
December 2008
Creator:
Karri, Avinash
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
EMSL Contribution Plan
This Contribution Plan is EMSL’s template for achieving our vision of simultaneous excellence in all aspects of our mission as a national scientific user facility. It reflects our understanding of the long-term stewardship we must work toward to meet the scientific challenges faced by the Department of Energy (DOE) and the nation. During the next decade, we will implement the strategies contained in this Plan, working closely with the scientific community, our advisory committees, DOE’s Office of Biological and Environmental Research, and other key stakeholders. This Plan is fully aligned with the strategic plans of DOE, its Office of Science, and the Pacific Northwest National Laboratory (PNNL). We recognize that shifts in science and technology, national priorities, and resources made available through the Federal budget process create planning uncertainties and, ultimately, a highly dynamic planning environment. Accordingly, this Plan should be viewed as a living document and we continually evaluate the changing needs and opportunities posed by our stakeholders (i.e., DOE, users, staff, advisory committees), work closely with them to understand and respond to those changes, and align our strategy accordingly. This Plan is organized around two sections. Section 1 describes our vision and four strategic outcomes: 1) Scientific Innovation, …
Date:
December 1, 2008
Creator:
Campbell, Allison A.
Object Type:
Report
System:
The UNT Digital Library
Enhanced Geothermal Systems (EGS) well construction technology evaluation report.
Electricity production from geothermal resources is currently based on the exploitation of hydrothermal reservoirs. Hydrothermal reservoirs possess three ingredients critical to present day commercial extraction of subsurface heat: high temperature, in-situ fluid and high permeability. Relative to the total subsurface heat resource available, hydrothermal resources are geographically and quantitatively limited. A 2006 DOE sponsored study led by MIT entitled 'The Future of Geothermal Energy' estimates the thermal resource underlying the United States at depths between 3 km and 10 km to be on the order of 14 million EJ. For comparison purposes, total U.S. energy consumption in 2005 was 100 EJ. The overwhelming majority of this resource is present in geological formations which lack either in-situ fluid, permeability or both. Economical extraction of the heat in non-hydrothermal situations is termed Enhanced or Engineered Geothermal Systems (EGS). The technologies and processes required for EGS are currently in a developmental stage. Accessing the vast thermal resource between 3 km and 10 km in particular requires a significant extension of current hydrothermal practice, where wells rarely reach 3 km in depth. This report provides an assessment of well construction technology for EGS with two primary objectives: (1) Determining the ability of existing technologies …
Date:
December 1, 2008
Creator:
Capuano, Louis, Jr. (Thermasource Inc.); Huh, Michael; Swanson, Robert (Thermasource Inc.); Raymond, David Wayne; Finger, John Travis; Mansure, Arthur James et al.
Object Type:
Report
System:
The UNT Digital Library