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Storage 101: The Basics

This presentation discusses storage options for digital content, questions to ask when planning, and things to consider for storing and digitizing data.
Date: February 5, 2010
Creator: Phillips, Mark Edward
Object Type: Presentation
System: The UNT Digital Library
Troubled Asset Relief Program: Treasury Needs to Strengthen Its Decision-Making Process on the Term Asset-Backed Securities Loan Facility (open access)

Troubled Asset Relief Program: Treasury Needs to Strengthen Its Decision-Making Process on the Term Asset-Backed Securities Loan Facility

A letter report issued by the Government Accountability Office with an abstract that begins "The Term Asset-Backed Securities Loan Facility (TALF) was created by the Board of Governors of the Federal Reserve System (Federal Reserve) to help meet consumer and small business credit needs by supporting issuance of asset-backed securities (ABS) and commercial mortgage-backed securities (CMBS). This report assesses (1) the risks TALF-eligible assets pose to the Troubled Asset Relief Program (TARP), (2) Department of the Treasury's (Treasury) role in decision making for TALF, and (3) the condition of securitization markets before and after TALF. GAO reviewed program documents, analyzed data from prospectuses and other sources, and interviewed relevant agency officials and TALF participants."
Date: February 5, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library

Update on Digitization Projects at the University of North Texas (UNT)

This presentation gives an update on the Digital Library and The Portal to Texas History collections held by the University of North Texas (UNT) Libraries in 2010.
Date: February 5, 2010
Creator: Belden, Dreanna
Object Type: Presentation
System: The UNT Digital Library
Highway Research: The Second Strategic Highway Research Program Addresses the Four Required Areas, but Some Anticipated Research Was Not Funded (open access)

Highway Research: The Second Strategic Highway Research Program Addresses the Four Required Areas, but Some Anticipated Research Was Not Funded

A letter report issued by the Government Accountability Office with an abstract that begins "The 2005 Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users authorized the Department of Transportation to establish a highway research program to address future challenges facing the U.S. highway system. In 2006, the Second Strategic Highway Research Program was established to conduct research in four areas--safety, renewal, reliability, and capacity. The Transportation Research Board manages this program in cooperation with the Federal Highway Administration and others. The legislation also required GAO to review the program no later than 3 years after the first research contracts were awarded. This report provides information about the process for selecting the program's projects for funding, the projects' status, and what, if any, research was eliminated because of funding and time constraints. To address our objectives, GAO reviewed the program's authorizing legislation, analyzed studies and reports related to the program and its projects, and interviewed officials from relevant transportation agencies and organizations. GAO is not making recommendations in this report. The Department of Transportation and the Transportation Research Board reviewed a draft of this report and provided technical clarifications, which we incorporated, as appropriate."
Date: February 5, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 41, No. 10, Ed. 1 Friday, February 5, 2010 (open access)

The Greensheet (Houston, Tex.), Vol. 41, No. 10, Ed. 1 Friday, February 5, 2010

Free weekly newspaper that includes business and classified advertising.
Date: February 5, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 12, Ed. 1 Friday, February 5, 2010 (open access)

The Greensheet (Houston, Tex.), Vol. 41, No. 12, Ed. 1 Friday, February 5, 2010

Free weekly newspaper that includes business and classified advertising.
Date: February 5, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Optimist (Abilene, Tex.), Vol. 98, No. 35, Ed. 1 Friday, February 5, 2010 (open access)

The Optimist (Abilene, Tex.), Vol. 98, No. 35, Ed. 1 Friday, February 5, 2010

Bi-weekly student newspaper from Abilene Christian University in Abilene, Texas that includes local, state and campus news along with advertising.
Date: February 5, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Ranger (San Antonio, Tex.), Vol. 84, No. 13, Ed. 1 Friday, February 5, 2010 (open access)

The Ranger (San Antonio, Tex.), Vol. 84, No. 13, Ed. 1 Friday, February 5, 2010

Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date: February 5, 2010
Creator: San Antonio College
Object Type: Newspaper
System: The Portal to Texas History
Texas Register, Volume 35, Number 6, Pages 711-960, February 5, 2010 (open access)

Texas Register, Volume 35, Number 6, Pages 711-960, February 5, 2010

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: February 5, 2010
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
North Texas Daily (Denton, Tex.), Vol. 95, No. 12, Ed. 1 Friday, February 5, 2010 (open access)

North Texas Daily (Denton, Tex.), Vol. 95, No. 12, Ed. 1 Friday, February 5, 2010

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date: February 5, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 26, No. 38, Ed. 1 Friday, February 5, 2010 (open access)

Dallas Voice (Dallas, Tex.), Vol. 26, No. 38, Ed. 1 Friday, February 5, 2010

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: February 5, 2010
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
The Greensheet (Houston, Tex.), Vol. 41, No. 11, Ed. 1 Friday, February 5, 2010 (open access)

The Greensheet (Houston, Tex.), Vol. 41, No. 11, Ed. 1 Friday, February 5, 2010

Free weekly newspaper that includes business and classified advertising.
Date: February 5, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Laser Systems for Orbital Debris Removal (open access)

Laser Systems for Orbital Debris Removal

The use of a ground based laser for space debris cleaning was investigated by the ORION project in 1996. Since that study the greatest technological advance in the development of high energy pulsed laser systems has taken place within the NIF project at LLNL. The proposed next laser system to follow the NIF at LLNL will be a high rep rate version of the NIF based on diode-pumping rather than flashlamp excitation; the so called 'LIFE' laser system. Because a single 'LIFE' beamline could be built up in a few year time frame, and has performance characteristics relevant to the space debris clearing problem, such a beamline could enable a near term demonstration of space debris cleaning. Moreover, the specifics of debris cleaning make it possible to simplify the LIFE laser beyond what is required for a fusion drive laser, and so substantially reduce its cost. Starting with the requirements for laser intensity on the target, and then considering beam delivery, we will flow back the laser requirements needed for space debris cleaning. Using these derived requirements we will then optimize the pulse duration, the operational regime, and the output pulse energy of the laser with a focus of simplifying …
Date: February 5, 2010
Creator: Rubenchik, A M; Barty, C P; Beach, R J; Erlandson, A C & Caird, J A
Object Type: Article
System: The UNT Digital Library
NEUTRON MULTIPLICITY AND ACTIVE WELL NEUTRON COINCIDENCE VERIFICATION MEASUREMENTS PERFORMED FOR MARCH 2009 SEMI-ANNUAL DOE INVENTORY (open access)

NEUTRON MULTIPLICITY AND ACTIVE WELL NEUTRON COINCIDENCE VERIFICATION MEASUREMENTS PERFORMED FOR MARCH 2009 SEMI-ANNUAL DOE INVENTORY

The Analytical Development (AD) Section field nuclear measurement group performed six 'best available technique' verification measurements to satisfy a DOE requirement instituted for the March 2009 semi-annual inventory. The requirement of (1) yielded the need for SRNL Research Operations Department Material Control & Accountability (MC&A) group to measure the Pu content of five items and the highly enrich uranium (HEU) content of two. No 14Q-qualified measurement equipment was available to satisfy the requirement. The AD field nuclear group has routinely performed the required Confirmatory Measurements for the semi-annual inventories for fifteen years using sodium iodide and high purity germanium (HpGe) {gamma}-ray pulse height analysis nondestructive assay (NDA) instruments. With appropriate {gamma}-ray acquisition modeling, the HpGe spectrometers can be used to perform verification-type quantitative assay for Pu-isotopics and HEU content. The AD nuclear NDA group is widely experienced with this type of measurement and reports content for these species in requested process control, MC&A booking, and holdup measurements assays Site-wide. However none of the AD HpGe {gamma}-ray spectrometers have been 14Q-qualified, and the requirement of reference 1 specifically excluded a {gamma}-ray PHA measurement from those it would accept for the required verification measurements. The requirement of reference 1 was a new …
Date: February 5, 2010
Creator: Dewberry, R.; Ayers, J.; Tietze, F. & Klapper, K.
Object Type: Article
System: The UNT Digital Library
SOLAR PUMPED LASER MICROTHRUSTER (open access)

SOLAR PUMPED LASER MICROTHRUSTER

The development of microsatellites requires the development of engines to modify their orbit. It is natural to use solar energy to drive such engines. For an unlimited energy source the optimal thruster must use a minimal amount of expendable material to minimize launch costs. This requires the ejected material to have the maximal velocity and, hence, the ejected atoms must be as light as possible and be ejected by as high an energy density source as possible. Such a propulsion can be induced by pulses from an ultra-short laser. The ultra-short laser provides the high-energy concentration and high-ejected velocity. We suggest a microthruster system comprised of an inflatable solar concentrator, a solar panel, and a diode-pumped fiber laser. We will describe the system design and give weight estimates.
Date: February 5, 2010
Creator: Rubenchik, A M; Beach, R; Dawson, J & Siders, C W
Object Type: Article
System: The UNT Digital Library
Attrition Resistant Fischer-Tropsch Catalysts Based on FCC Supports (open access)

Attrition Resistant Fischer-Tropsch Catalysts Based on FCC Supports

Commercial spent fluid catalytic cracking (FCC) catalysts provided by Engelhard and Albemarle were used as supports for Fe-based catalysts with the goal of improving the attrition resistance of typical F-T catalysts. Catalysts with the Ruhrchemie composition (100 Fe/5 Cu/4.2 K/25 spent FCC on mass basis) were prepared by wet impregnation. XRD and XANES analysis showed the presence of Fe{sub 2}O{sub 3} in calcined catalysts. FeC{sub x} and Fe{sub 3}O{sub 4} were present in the activated catalysts. The metal composition of the catalysts was analyzed by ICP-MS. F-T activity of the catalysts activated in situ in CO at the same conditions as used prior to the attrition tests was measured using a fixed bed reactor at T = 573 K, P = 1.38 MPa and H{sub 2}:CO ratio of 0.67. Cu and K promoted Fe supported over Engelhard provided spent FCC catalyst shows relatively good attrition resistance (8.2 wt% fines lost), high CO conversion (81%) and C{sub 5}+ hydrocarbons selectivity (18.3%).
Date: February 5, 2010
Creator: Adeyiga, Adeyinka
Object Type: Report
System: The UNT Digital Library
Image analysis of ocular fundus for retinopathy characterization (open access)

Image analysis of ocular fundus for retinopathy characterization

Automated analysis of ocular fundus images is a common procedure in countries as England, including both nonemergency examination and retinal screening of patients with diabetes mellitus. This involves digital image capture and transmission of the images to a digital reading center for evaluation and treatment referral. In collaboration with the Optometry Department, University of California, Berkeley, we have tested computer vision algorithms to segment vessels and lesions in ground-truth data (DRIVE database) and hundreds of images of non-macular centric and nonuniform illumination views of the eye fundus from EyePACS program. Methods under investigation involve mathematical morphology (Figure 1) for image enhancement and pattern matching. Recently, we have focused in more efficient techniques to model the ocular fundus vasculature (Figure 2), using deformable contours. Preliminary results show accurate segmentation of vessels and high level of true-positive microaneurysms.
Date: February 5, 2010
Creator: Ushizima, Daniela & Cuadros, Jorge
Object Type: Report
System: The UNT Digital Library
Analytical Validation of Accelerator Mass Spectrometry for Pharmaceutical Development: the Measurement of Carbon-14 Isotope Ratio. (open access)

Analytical Validation of Accelerator Mass Spectrometry for Pharmaceutical Development: the Measurement of Carbon-14 Isotope Ratio.

Accelerator mass spectrometry (AMS) is an isotope based measurement technology that utilizes carbon-14 labeled compounds in the pharmaceutical development process to measure compounds at very low concentrations, empowers microdosing as an investigational tool, and extends the utility of {sup 14}C labeled compounds to dramatically lower levels. It is a form of isotope ratio mass spectrometry that can provide either measurements of total compound equivalents or, when coupled to separation technology such as chromatography, quantitation of specific compounds. The properties of AMS as a measurement technique are investigated here, and the parameters of method validation are shown. AMS, independent of any separation technique to which it may be coupled, is shown to be accurate, linear, precise, and robust. As the sensitivity and universality of AMS is constantly being explored and expanded, this work underpins many areas of pharmaceutical development including drug metabolism as well as absorption, distribution and excretion of pharmaceutical compounds as a fundamental step in drug development. The validation parameters for pharmaceutical analyses were examined for the accelerator mass spectrometry measurement of {sup 14}C/C ratio, independent of chemical separation procedures. The isotope ratio measurement was specific (owing to the {sup 14}C label), stable across samples storage conditions for at …
Date: February 5, 2010
Creator: Keck, B D; Ognibene, T & Vogel, J S
Object Type: Article
System: The UNT Digital Library
Paleoclimatic implications of glacial and postglacial refugia for Pinus pumila in western Beringia (open access)

Paleoclimatic implications of glacial and postglacial refugia for Pinus pumila in western Beringia

Palynological results from Julietta Lake currently provide the most direct evidence to support the existence of a glacial refugium for Pinus pumila in mountains of southwestern Beringia. Both percentages and accumulation rates indicate the evergreen shrub survived until at least {approx}19,000 14C yr B.P. in the Upper Kolyma region. Percentage data suggest numbers dwindled into the late glaciation, whereas pollen accumulation rates point towards a more rapid demise shortly after {approx}19,000 14C yr B.P. Pinus pumila did not re-establish in any great numbers until {approx}8100 14C yr B.P., despite the local presence {approx}9800 14C yr B.P. of Larix dahurica, which shares similar summer temperature requirements. The postglacial thermal maximum (in Beringia {approx}11,000-9000 14C yr B.P.) provided Pinus pumila shrubs with equally harsh albeit different conditions for survival than those present during the LGM. Regional records indicate that in this time of maximum warmth Pinus pumila likely sheltered in a second, lower-elevation refugium. Paleoclimatic models and modern ecology suggest that shifts in the nature of seasonal transitions and not only seasonal extremes have played important roles in the history of Pinus pumila over the last {approx}21,000 14C yr B.P.
Date: February 5, 2010
Creator: Anderson, P M; Lozhkin, A V; Solomatkina, T B & Brown, T A
Object Type: Article
System: The UNT Digital Library
Frequency stabilization via the mixed mode in three mode HeNe lasers (open access)

Frequency stabilization via the mixed mode in three mode HeNe lasers

This paper describes a three mode HeNe laser frequency stabilization technique using the mixed mode frequency to obtain a fractional frequency stability of 2 x 10{sup -11}. The mixed mode frequency occurs due to optical nonlinear interactions with the adjacent modes at each of the three modes. In precision displacement interferometry systems, the laser source frequency must be stabilized to provide an accurate conversion ratio between phase change and displacement. In systems, such as lithography applications, which require high speed, high accuracy and low data age uncertainty, it is also desirable to avoid periodic nonlinearities, which reduces computation time and errors. One method to reduce periodic nonlinearity is to spatially separate the measurement and reference beams to prevent optical mixing, which has been shown for several systems. Using spatially separated beams and the proper optical configuration, the interferometer can be fiber fed, which can increase the interferometer's stability by reducing the number of beam steering optical elements. Additionally, as the number of measurement axes increases, a higher optical power from the laser source is necessary.
Date: February 5, 2010
Creator: Ellis, J D; Joo, K; Buice, E S; Spronck, J W & Munnig Schmidt, R H
Object Type: Article
System: The UNT Digital Library
A novel heterodyne displacement interferometer with no detectable periodic nonlinearity and optical resolution doubling (open access)

A novel heterodyne displacement interferometer with no detectable periodic nonlinearity and optical resolution doubling

This paper describes a novel heterodyne laser interferometer with no significant periodic nonlinearity for linear displacement measurements. Moreover, the optical configurations have the benefit of doubling the measurement resolution when compared to its respective traditional counterparts. Experimental results show no discernable periodic nonlinearity for a retro-reflector interferometer and plane mirror interferometer configurations with a noise level below 20 pm. The incoming laser beams of the interferometers are achieved by utilizing two single mode optical fibers. To determine the stability of the optical fiber couplers a fiber delivery prototype was also built and tested.
Date: February 5, 2010
Creator: Joo, K; Ellis, J D; Buice, E S; Spronck, J W & Munnig Schmidt, R H
Object Type: Article
System: The UNT Digital Library
Financing the U.S. Trade Deficit (open access)

Financing the U.S. Trade Deficit

This report provides an overview of the U.S. balance of payments, an explanation of the broader role of capital flows in the U.S. economy, an explanation of how the country finances its trade deficit or a trade surplus, and the implications for Congress and the country of the large inflows of capital from abroad.
Date: February 5, 2010
Creator: Jackson, James K.
Object Type: Report
System: The UNT Digital Library
Al Qaeda and Affiliates: Historical Perspective, Global Presence, and Implications for U.S. Policy (open access)

Al Qaeda and Affiliates: Historical Perspective, Global Presence, and Implications for U.S. Policy

The focus of this report is on the history of Al Qaeda, known (or attributed) actions, suspected capabilities of the organization and non-aligned entities, and an analysis of select regional Al Qaeda affiliates.
Date: February 5, 2010
Creator: Rollins, John
Object Type: Report
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 54, No. 12, Ed. 1 Friday, February 5, 2010 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 54, No. 12, Ed. 1 Friday, February 5, 2010

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: February 5, 2010
Creator: Stuart, Andrew
Object Type: Newspaper
System: The Portal to Texas History