Partner
UNT Libraries Government Documents Department
228
UNT Libraries Special Collections
62
Oklahoma Historical Society
40
UNT Libraries
19
UNT Music Library
16
Sterling Municipal Library
10
Carl Albert Congressional Research and Studies Center
7
Dallas Area Rapid Transit (DART)
6
National Museum of the Pacific War/Admiral Nimitz Foundation
5
Comanche Public Library
4
53 More
Collection
Office of Scientific & Technical Information Technical Reports
115
Texas Digital Newspaper Program
112
Congressional Research Service Reports
69
Tocker Foundation Grant
50
Oklahoma Digital Newspaper Program
47
KXAS-NBC 5 News Collection
38
Government Accountability Office Reports
34
College of Music Recordings
16
The Greensheet
15
The Baytown Sun
10
88 More
Degree Department
Degree Discipline
Degree Level
Country
Decade
Month
Day
480 Matching Results
Results open in a new window/tab.
Exploiting Data Parallelism in the Image Content Engine
The Image Content Engine (ICE) is a framework of software and underlying mathematical and physical models that enable scientists and analysts to extract features from Terabytes of imagery and search the extracted features for content relevant to their problem domain. The ICE team has developed a set of tools for feature extraction and analysis of image data, primarily based on the image content. The scale and volume of imagery that must be searched presents a formidable computation and data bandwidth challenge, and a search of moderate to large scale imagery quickly becomes intractable without exploiting high degrees of data parallelism in the feature extraction engine. In this paper we describe the software and hardware architecture developed to build a data parallel processing engine for ICE. We discuss our highly tunable parallel process and job scheduling subsystem, remote procedure invocation, parallel I/O strategy, and our experience in running ICE on a 16 node, 32 processing element (CPU) Linux Cluster. We present performance and benchmark results, and describe how we obtain excellent speedup for the imagery searches in our test-bed prototype.
Date:
March 9, 2006
Creator:
Miller, W M; Garlick, J E; Weinert, G F & Abdulla, G M
Object Type:
Article
System:
The UNT Digital Library
Of extracellular matrix, scaffolds, and signaling: Tissuearchitectureregulates development, homeostasis, and cancer
The microenvironment surrounding cells influences gene expression, such that a cell's behavior is largely determined by its interactions with the extracellular matrix, neighboring cells, and soluble cues released locally or by distant tissues. We describe the essential role of context and organ structure in directing mammary gland development and differentiated function, and in determining response to oncogenic insults including mutations. We expand on the concept of 'dynamic reciprocity' to present an integrated view of development, cancer, and aging, and posit that genes are like piano keys: while essential, it is the context that makes the music.
Date:
March 9, 2006
Creator:
Nelson, Celeste M. & Bissell, Mina J.
Object Type:
Article
System:
The UNT Digital Library
2004 status report: Savings estimates for the Energy Star(R)voluntarylabeling program
ENERGY STAR(R) is a voluntary labeling program designed toidentify and promote energy-efficient products, buildings and practices.Operated jointly by the Environmental Protection Agency (EPA) and theU.S. Department of Energy (DOE), ENERGY STAR labels exist for more thanthirty products, spanning office equipment, residential heating andcooling equipment, commercial and residential lighting, home electronics,and major appliances. This report presents savings estimates for a subsetof ENERGY STAR labeled products. We present estimates of the energy,dollar and carbon savings achieved by the program in the year 2003, whatwe expect in 2004, and provide savings forecasts for two marketpenetration scenarios for the periods 2004 to 2010 and 2004 to 2020. Thetarget market penetration forecast represents our best estimate of futureENERGY STAR savings. It is based on realistic market penetration goalsfor each of the products. We also provide a forecast under the assumptionof 100 percent market penetration; that is, we assume that all purchasersbuy ENERGY STAR-compliant products instead of standard efficiencyproducts throughout the analysis period.
Date:
March 9, 2004
Creator:
Webber, Carrie A.; Brown, Richard E. & McWhinney, Marla
Object Type:
Report
System:
The UNT Digital Library
Enhancement of Equilibrium Shift in Dehydrogenation Reactions Using a Novel Membrane Reactor Semi-Annual Report: March-August 1999
None
Date:
March 9, 2000
Creator:
Ilias, Shamsuddin & King, Franklin G.
Object Type:
Report
System:
The UNT Digital Library
A Consistent Prescription for the Production Involving MassiveQuarks in Hadron Collisions
This paper addresses the issue of production of charm orbottom quarks in association with a high pT process in hadron hadroncollision. These quarks can be produced either as part of the hardscattering process or as a remnant from the structure functions. Thelatter sums terms of the type (alpha_s log(pT/mq))n. If structurefunctions of charm or bottom quarks are used together with a hard processwhich also allows production of these quarks double counting occurs. Thispaper describes the correct procedure and provides two examples of itsimplimentation in single top and Drell-Yan at the LHC.
Date:
March 9, 2006
Creator:
Kersevan, Borut Paul & Hinchliffe, Ian
Object Type:
Article
System:
The UNT Digital Library
New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods
The research during the first year of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The proposed new technique is based on examining the spectral induced polarization effects in electromagnetic data using modern distributed acquisition systems and advanced methods of 3-D inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. One of the most popular is the Cole-Cole relaxation model. In this progress report we have constructed and analyzed a different physical and mathematical model of the IP effect based on the effective-medium theory. We have developed a rigorous mathematical model of multi-phase conductive media, which can provide a quantitative tool for evaluation of the type of mineralization, using the conductivity relaxation model parameters. The parameters of the new conductivity relaxation model can be used for discrimination of the different types of rock formations, which is an important goal in mineral exploration. The solution of this problem requires development of an effective numerical method for EM forward modeling in 3-D inhomogeneous media. During the first year of the project we have developed a prototype 3-D IP …
Date:
March 9, 2005
Creator:
Zhdanov, Michael S.
Object Type:
Report
System:
The UNT Digital Library
Seismicity Precursors of the M6.0 2004 Parkfield and M7.0 1989Loma Prieta Earthquakes
The M6.0 2004 Parkfield and M7.0 1989 Loma Prietastrike-slip earthquakes on the San Andreas Fault (SAF) were preceded byseismicity peaks occurring several months prior to the main events.Earthquakes directly within the SAF zone were intentionally excluded fromthe analysis because they manifest stress-release processes rather thanstress accumulation. The observed increase in seismicity is interpretedas a signature of the increasing stress level in the surrounding crust,whereas the peaks and the subsequent decrease in seismicity areattributed to damage-induced softening processes. Furthermore, in bothcases there is a distinctive zone of low seismic activity that surroundsthe epicentral region in the pre-event period. The increase of seismicityin the crust surrounding a potential future event and the development ofa low-seismicity epicentral zone can be regarded as promising precursoryinformation that could help signal the arrival of large earthquakes. TheGutenberg-Richter relationship (GRR) should allow extrapolation ofseismicity changes down to seismic noise level magnitudes. Thishypothesis is verified by comparison of seismic noise at 80 Hz with theParkfield M4 1993-1994 series, where noise peaks 5 months before theseries to about twice the background level.
Date:
March 9, 2006
Creator:
Korneev, Valeri A.
Object Type:
Report
System:
The UNT Digital Library
Enhancement of Equilibrium Shift in Dehydrogenation Reactions Using a Novel Membrane Reactor Semi-Annual Report: September 1999-February 2000
In our previous report we reported technical difficulties encountered in the fabrication of tubular membrane reactor using our Pd-ceramic composite membranes. Although the membrane is highly selective to hydrogen but in test runs we observed leakage of hydrogen from the end-seals and metallic fittings. This was a serious problem. An attempt to improve the seal by tightening was not helpful but resulted in cracks and breakage of the ceramic tube. To test the equilibrium conversion and equilibrium shift effect on dehydrogenation of cyclohexane to benzene and hydrogen in membrane reactor, we used Pd-ceramic discs in our diffusion cell as reactor packed with Pt-catalyst pellets. Test results show that by manipulating the feed (cyclohexane) flow rate and sweep gas flow rate (permeate side) we can have over 55% conversion as opposed to 18.7% equilibrium conversion under identical conditions. This demonstrates the usefulness of the new membrane in H{sub 2} separation and also in membrane-reactor configurations for equilibrium limited decomposition and dehydrogenation reactions.
Date:
March 9, 2000
Creator:
Ilias, Shamsuddin & King, Franklin G.
Object Type:
Report
System:
The UNT Digital Library
Review of High Level Waste Tanks Ultrasonic Inspection Data
A review of the data collected during ultrasonic inspection of the Type I high level waste tanks has been completed. The data was analyzed for relevance to the possibility of vapor space corrosion and liquid/air interface corrosion. The review of the Type I tank UT inspection data has confirmed that the vapor space general corrosion is not an unusually aggressive phenomena and correlates well with predicted corrosion rates for steel exposed to bulk solution. The corrosion rates are seen to decrease with time as expected. The review of the temperature data did not reveal any obvious correlations between high temperatures and the occurrences of leaks. The complex nature of temperature-humidity interaction, particularly with respect to vapor corrosion requires further understanding to infer any correlation. The review of the waste level data also did not reveal any obvious correlations.
Date:
March 9, 2006
Creator:
Wiersma, B
Object Type:
Report
System:
The UNT Digital Library
Terascale Simulation Tools and Technologies
We report the development of front tracking method as a simulation tool and technology for the computation on several important SciDAC and SciDAC associated applications. The progress includes the extraction of an independent software library from the front tracking code, conservative front tracking, applications of front tracking to the simulation of fusion pellet injection in a magnetically confined plasma, the study of a fuel injection jet, and the study of fluid chaotic mixing, among other problems.
Date:
March 9, 2007
Creator:
Li, Xiaolin
Object Type:
Report
System:
The UNT Digital Library
New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods
The research during the first two years of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The developed new technique is based on examining the spectral induced polarization effects in electromagnetic data using effective-medium theory and advanced methods of 3-D modeling and inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. In this project, we have developed a rigorous physical/mathematical model of heterogeneous conductive media based on the effective-medium approach. The new generalized effective-medium theory of IP effect (GEMTIP) provides a unified mathematical method to study heterogeneity, multi-phase structure, and polarizability of rocks. The geoelectrical parameters of a new composite conductivity model are determined by the intrinsic petrophysical and geometrical characteristics of composite media: mineralization and/or fluid content of rocks, matrix composition, porosity, anisotropy, and polarizability of formations. The new GEMTIP model of multi-phase conductive media provides a quantitative tool for evaluation of the type of mineralization, and the volume content of different minerals using electromagnetic data. We have developed a 3-D EM-IP modeling algorithm using the integral equation (IE) method. Our IE forward modeling software …
Date:
March 9, 2009
Creator:
Zhdanov, Michael S.
Object Type:
Report
System:
The UNT Digital Library
Characterization, Leaching, and Filtration Testing for Tributyl Phosphate (TBP, Group 7) Actual Waste Sample Composites
.A testing program evaluating actual tank waste was developed in response to Task 4 from the M-12 External Flowsheet Review Team (EFRT) issue response plan. The bulk water-insoluble solid wastes that are anticipated to be delivered to the Waste Treatment and Immobilization Plant (WTP) were identified according to type such that the actual waste testing could be targeted to the relevant categories. Eight broad waste groupings were defined. Samples available from the 222S archive were identified and obtained for testing. The actual waste-testing program included homogenizing the samples by group, characterizing the solids and aqueous phases, and performing parametric leaching tests. The tributyl phosphate sludge (TBP, Group 7) is the subject of this report. The Group 7 waste was anticipated to be high in phosphorus as well as aluminum in the form of gibbsite. Both are believed to exist in sufficient quantities in the Group 7 waste to address leaching behavior. Thus, the focus of the Group 7 testing was on the removal of both P and Al. The waste-type definition, archived sample conditions, homogenization activities, characterization (physical, chemical, radioisotope, and crystal habit), and caustic leaching behavior as functions of time, temperature, and hydroxide concentration are discussed in this report. …
Date:
March 9, 2009
Creator:
Edwards, Matthew K.; Billing, Justin M.; Blanchard, David L.; Buck, Edgar C.; Casella, Amanda J.; Casella, Andrew M. et al.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Filtration Scale-Up Performance
The scale-up performance of sintered stainless steel crossflow filter elements planned for use at the Pretreatment Engineering Platform (PEP) and at the Waste Treatment and Immobilization Plant (WTP) were characterized in partial fulfillment (see Table S.1) of the requirements of Test Plan TP RPP WTP 509. This test report details the results of experimental activities related only to filter scale-up characterization. These tests were performed under the Simulant Testing Program supporting Phase 1 of the demonstration of the pretreatment leaching processes at PEP. Pacific Northwest National Laboratory (PNNL) conducted the tests discussed herein for Bechtel National, Inc. (BNI) to address the data needs of Test Specification 24590-WTP-TSP-RT-07-004. Scale-up characterization tests employ high-level waste (HLW) simulants developed under the Test Plan TP-RPP-WTP-469. The experimental activities outlined in TP-RPP-WTP-509 examined specific processes from two broad areas of simulant behavior: 1) leaching performance of the boehmite simulant as a function of suspending phase chemistry and 2) filtration performance of the blended simulant with respect to filter scale-up and fouling. With regard to leaching behavior, the effect of anions on the kinetics of boehmite leaching was examined. Two experiments were conducted: 1) one examined the effect of the aluminate anion on the rate of …
Date:
March 9, 2009
Creator:
Daniel, Richard C.; Billing, Justin M.; Luna, Maria L.; Cantrell, Kirk J.; Peterson, Reid A.; Bonebrake, Michael L. et al.
Object Type:
Report
System:
The UNT Digital Library
An IR-Selected Galaxy Cluster at Z=1.41
We report the discovery of a galaxy cluster at z = 1.41. ISCS J143809+341419 was found in the Spitzer/IRAC Shallow Survey of the Bootes field in the NOAO Deep Wide-Field Survey carried out by IRAC. The cluster candidate was initially identified as a high density region of objects with photometric redshifts in the range 1.3 < z < 1.5. Optical spectroscopy of a limited number of objects in the region shows that 5 galaxies within a {approx}120 arcsec diameter region lie at z = 1.41 {+-} 0.01. Most of these member galaxies have broad-band colors consistent with the expected spectral energy distribution of a passively-evolving elliptical galaxy formed at high redshift. The redshift of ISCS J143809+341419 is the highest currently known for a spectroscopically-confirmed cluster of galaxies.
Date:
March 9, 2006
Creator:
Stanford, S. A.; Eisenhardt, P. R.; Brodwin, M.; Gonzalez, A. H.; Stern, D.; Jannuzi, B. et al.
Object Type:
Article
System:
The UNT Digital Library
San Antonio Register (San Antonio, Tex.), Vol. 68, No. 38, Ed. 1 Thursday, March 9, 2000
Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2000
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Ranger (San Antonio, Tex.), Vol. 76, No. 18, Ed. 1 Friday, March 9, 2001
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
March 9, 2001
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
The Ranger (San Antonio, Tex.), Vol. 81, No. 18, Ed. 1 Friday, March 9, 2007
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
March 9, 2007
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 124, No. 20, Ed. 1 Thursday, March 9, 2006
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
March 9, 2006
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 44, Ed. 1 Thursday, March 9, 2000
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2000
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 45, Ed. 1 Thursday, March 9, 2006
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2006
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 10, Ed. 1 Thursday, March 9, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 206, No. 9, Ed. 1 Friday, March 9, 2001
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2001
Creator:
Keys, Scott & Lamb, Bill
Object Type:
Newspaper
System:
The Portal to Texas History
Yoakum Herald-Times (Yoakum, Tex.), Vol. 113, No. 10, Ed. 1 Wednesday, March 9, 2005
Weekly newspaper from Yoakum, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Llano News (Llano, Tex.), Vol. 117, No. 23, Ed. 1 Wednesday, March 9, 2005
Weekly newspaper from Llano, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2005
Creator:
Stephenson, Jimmy
Object Type:
Newspaper
System:
The Portal to Texas History