Access
Partner
Oklahoma Historical Society
265
UNT Libraries Government Documents Department
200
Sterling Municipal Library
85
South Plains College
80
UNT Libraries
53
Swisher County Library
52
Livingston Municipal Library
39
FM Buck Richards Library
37
Abilene Christian University Library
31
Stamford Carnegie Library
28
64 More
Collection
Texas Digital Newspaper Program
682
Tocker Foundation Grant
445
Oklahoma Digital Newspaper Program
289
Office of Scientific & Technical Information Technical Reports
135
The Baytown Sun
83
Hockley County Area Newspaper Collection
80
Altus Times-Democrat
54
African-American Newspapers
52
Oklahoma Eagle Publishing Company
52
Tulia Herald
52
119 More
Degree Department
College of Education
4
Department of Teacher Education and Administration
3
Department of Counseling, Development and Higher Education
2
Department of Criminal Justice
2
Department of History
2
Department of Psychology
2
College of Music
1
Department of Counseling Development, Family Studies, and Higher Education
1
Department of Journalism
1
Department of Marketing and Logistics
1
6 More
Degree Discipline
Degree Level
Country
States
Year
Month
Language
1,267 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
1,267
next
The New Booster Dump and Dump Bumps
N/A
Date:
March 1, 2001
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
Multi-turn Injetion of Heavy-Ions in Booster with the H-Minus Injection Foil Inserted
N/A
Date:
September 1, 2001
Creator:
Gardner, C. J.
Object Type:
Report
System:
The UNT Digital Library
The J-TAC (Stephenville, Tex.), Vol. 162, No. 13, Ed. 1 Friday, November 30, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
November 30, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 161, No. 9, Ed. 1 Thursday, April 5, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
April 5, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 162, No. 1, Ed. 1 Thursday, September 6, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
September 6, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 162, No. 7, Ed. 1 Thursday, October 18, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
October 18, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 161, No. 1, Ed. 1 Thursday, January 25, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
January 25, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The J-TAC (Stephenville, Tex.), Vol. 161, No. 8, Ed. 1 Thursday, March 29, 2001
Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.
Date:
March 29, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Alumni J-TAC, Fall/Winter 2001
Alumni magazine of Tarleton State University providing information on events at the school and news about university students, staff, and alumni.
Date:
Winter 2001
Creator:
Tarleton State University
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Extinction Limits of Nonadiabatic, Catalyst-Assisted Flames in Stagnation-Point Flow
An idealized geometry corresponding to a premixed flame in stagnation-point flow is used to investigate the effects of catalysis on extending the extinction limits of on adiabatic stretched flames. Specifically, a surface catalytic reaction is assumed to occur on the stagnation plane, thereby augmenting combustion in the bulk gas with a exothermic surface reaction characterized by a reduced activation energy. Assuming the activation energies remain large, an asymptotic analysis of the resulting flame structure yields a formula for the extinction limit as a function of various parameters. In particular, it is demonstrated that the presence of a surface catalyst can extend the burning regime, thus counterbalancing the effects of heat loss and flame stretch that tend to shrink it. The analysis is relevant to small-volume combustors, where the increased surface-to-volume ratio can lead to extinction of the nonadiabatic flame in the absence of a catalyst.
Date:
February 1, 2001
Creator:
Margolis, Stephen B. & Gardner, Timothy J.
Object Type:
Report
System:
The UNT Digital Library
A Comparative Analysis of the Effectiveness of Three Different GED Preparation Programs
The purpose of this study was to identify effective instructional programs for GED tests preparation for students in a large suburban school district. Three different nonrandom, unequal naturally occurring instructional groups at three different locations were examined. One group participated in a traditional instruction program, a second group in a test/retest program, and a third group in a computer-assisted program. The demographics of the district population, the GED population, and the individual study groups were catalogued and analyzed. The demographics of the GED population were similar to the district population but different from the GED passers. Student characteristics did affect GED success. Both quantitative and qualitative data were gathered. Random students in each of the three groups were interviewed about their experiences in GED preparation using a questionnaire. Quantitative data were analyzed using frequencies, means, correlations, and a multiple regression analysis. Since the GED credential is an alternative to the high school diploma, its use as a dropout alternative is important to every school district. The study found that instructional methods had little impact on students' success in receiving the GED credential. The overall success rate of students was low in each group. The student's reading achievement score, GPA, and …
Date:
May 2001
Creator:
Gardner, Marlene K.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Correction Systems Upgrade for the Sns Ring.
In view of the changes in the design of the SNS ring from the original FODO lattice [l] to the 220m hybrid lattice [2] and finally 1.3GeV compatible 248m ring [3], complementary studies have been undertaken, in order to upgrade its correction packages. We review the evolution of the correction systems and present the accelerator physics studies for the adopted schemes and powering plan.
Date:
June 18, 2001
Creator:
Papaphilippou, Y.; GARDNER, C. J.; Lee, Y. Y. & Wei, J.
Object Type:
Article
System:
The UNT Digital Library
MAGNeT : Monitor for Application-Generated Network Traffic /
Over the laqt decade, network practitioners have focused on monitoring, measuring, and characterizing traffic in the network to gain insight into building critical network components (from the protocol stack to routers and switches to network interface cards). Recent research shows that additional insight can be obtained by monitoring traffic at the application level (Le,, before application-sent traffic is modulated by the protocol stack) rather than in the network (i-e., after it is modulated by the protocol stack). Consequently, this paper describes a Monitor for Application-Generated Network Traffic (MAGNeT) that captures traffic generated by the application rather than traffic in the network. MAGNeT consists of application programs as well as modifications to the standard Linux kernel. Together, these tools provide the capability of monitoring an application's network behavior and protocol state information in production systems. The use of MAGNeT will enable the research community to construct a library of real traces of application-generated traffic from which researchers can more realistically test network protocol designs and theory. MAGNeT can also be used to verify the correct operation of protocol enhancements and to troubleshoot and tune protocol implementations.
Date:
January 1, 2001
Creator:
Feng, W. C. (Wu-Chun); Hay, J. R. (Jeffrey R.) & Gardner, M. K. (Mark K.)
Object Type:
Article
System:
The UNT Digital Library
MAGNET TOOLKIT: DESIGN, IMPLEMENTATION, AND EVALUATION.
The current trend in constructing high-performance computing systems is to connect a large number of machines via a fast interconnect or a large-scale network such as the Internet, This approach relies on the performance of the interconnect (or Internet) to enable Past, large-scale distributed computing. A detailed understanding of the communication traffic is required in order to optimize the operation of entire system. Network researchers traditionally monitor traffic in the network to gain the insight necessary to optimize network operations. Recent work suggests additional insight can be obtained by also monitoring trafflc at the application level. The Monitor for Application-Generated Network Traffic toolkit (MAGNeT) we describe here monitors application trallic patterns In production systems, thus enabling more highly optimized networks and interconnects for the next generation of high performance computing system. Keywords- monitor, measurement, network protocol, traffic characterization, TCP, MAGNet, traces, application-generated traffic, virtual supercomputing, network-aware applications, computational giids, high-perfomiance computing.
Date:
January 1, 2001
Creator:
Hay, J. R. (Jeffrey R.); Feng, W. C. (Wu-Chun) & Gardner, M. K. (Mark K.)
Object Type:
Article
System:
The UNT Digital Library
Image Tool
ImageTool is a software package developed at Bechtel Nevada, Los Alamos Operations. This team has developed a set of analysis tools, in the form of image processing software used to evaluate camera calibration data. Performance measures are used to identify capabilities and limitations of a camera system, while establishing a means for comparing systems. The camera evaluations are designed to provide system performance, camera comparison and system modeling information. This program is used to evaluate digital camera images. ImageTool provides basic image restoration and analysis features along with a special set of camera evaluation tools which are used to standardize camera system characterizations. This process is started with the acquisition of a well-defined set of calibration images. Image processing algorithms provide a consistent means of evaluating the camera calibration data. Performance measures in the areas of sensitivity, noise, and resolution are used as a basis for comparing camera systems and evaluating experimental system performance. Camera systems begin with a charge-coupled device (CCD) camera and optical relay system and may incorporate image intensifiers, electro-static image tubes, or electron bombarded charge-coupled devices (EBCCDs). Electro-optical components provide fast shuttering and/or optical gain to camera systems. Camera types evaluated include gated intensified cameras and …
Date:
January 2001
Creator:
Baker, S. A.; Gardner, S. D.; Rogers, M. L.; Sanders, F. & Tunnell, T. W.
Object Type:
Article
System:
The UNT Digital Library
STATUS AND RECENT PERFORMANCE OF THE ACCELERATORS THAT SERVE AS GOLD INJECTOR FOR RHIC.
The recent successful commissioning and operation [1] of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) requires the injection of gold ions of specified energy and intensity with longitudinal and transverse emittances small enough to meet the luminosity requirements of the collider. Ion beams with the desired characteristics are provided by a series of three accelerators, the Tandem, Booster and AGS. The current status and recent performance of these accelerators are reviewed in this paper.
Date:
June 18, 2001
Creator:
Ahrens, L.; Alessi, J.; Van Asselt, W.; Benjamin, J.; Blaskiewicz, M.; Brennan, J. M. et al.
Object Type:
Article
System:
The UNT Digital Library
Selective Catalytic Oxidation of Hydrogen Sulfide to Elemental Sulfur from Coal-Derived Fuel Gases
The development of low cost, highly efficient, desulfurization technology with integrated sulfur recovery remains a principle barrier issue for Vision 21 integrated gasification combined cycle (IGCC) power generation plants. In this plan, the U. S. Department of Energy will construct ultra-clean, modular, co-production IGCC power plants each with chemical products tailored to meet the demands of specific regional markets. The catalysts employed in these co-production modules, for example water-gas-shift and Fischer-Tropsch catalysts, are readily poisoned by hydrogen sulfide (H{sub 2}S), a sulfur contaminant, present in the coal-derived fuel gases. To prevent poisoning of these catalysts, the removal of H{sub 2}S down to the parts-per-billion level is necessary. Historically, research into the purification of coal-derived fuel gases has focused on dry technologies that offer the prospect of higher combined cycle efficiencies as well as improved thermal integration with co-production modules. Primarily, these concepts rely on a highly selective process separation step to remove low concentrations of H{sub 2}S present in the fuel gases and produce a concentrated stream of sulfur bearing effluent. This effluent must then undergo further processing to be converted to its final form, usually elemental sulfur. Ultimately, desulfurization of coal-derived fuel gases may cost as much as 15% …
Date:
November 6, 2001
Creator:
Gardner, Todd H.; Berry, David A.; Lyons, K. David; Beer, Stephen K. & Monahan, Michael J.
Object Type:
Article
System:
The UNT Digital Library
Injection Choice for Spallation Neutron Source Ring.
Injection is key in the low-loss design of high-intensity proton facilities like the Spallation Neutron Source (SNS). During the design of both the accumulator and the rapid-cycling-synchrotron version of the SNS, extensive comparison has been made to select injection scenarios that satisfy SNS's low-loss design criteria. This paper presents issues and considerations pertaining to the final choice of the SNS injection systems.
Date:
June 18, 2001
Creator:
Wei, J.; Beebe-Wang, J.; Blaskiewicz, M.; Brodowski, J.; Fedotov, A.; Gardner, C. et al.
Object Type:
Article
System:
The UNT Digital Library
SUPERIMPOSED MESH PLOTTING IN MCNP
The capability to plot superimposed meshes has been added to MCNP{trademark}. MCNP4C featured a superimposed mesh weight window generator which enabled users to set up geometries without having to subdivide geometric cells for variance reduction. The variance reduction was performed with weight windows on a rectangular or cylindrical mesh superimposed over the physical geometry. Experience with the new capability was favorable but also indicated that a number of enhancements would be very beneficial, particularly a means of visualizing the mesh and its values. The mathematics for plotting the mesh and its values is described here along with a description of other upgrades.
Date:
February 1, 2001
Creator:
HENDRICKS, J.
Object Type:
Article
System:
The UNT Digital Library
Experimental Results in Support of Simulating Progressive Crush in Carbon-Fiber Textile Composites
This report summarizes the findings of an experimental program conducted to support the modeling of the crush behavior of triaxial braid carbon fiber composites. The matrix material as well as braided panels and tubes were characterized in order to determine material properties, to assess failure modes, and to provide a test bed for new analytical and numerical tools developed specifically for braided composites. The matrix material selected by the ACC was an epoxy vinyl ester (Ashland Hetron 922). Tensile tests were used to compare two formulations-one used by the ACC and one recommended by the resin supplier. The latter was a faster reacting system and gelled in one-third the time of the ACC formulation. Both formulations had an average elongation at failure that was only half of the resin supplier's reported value. Only one specimen of each type came close to the reported elongation value and it was shown that failure invariably initiated at both surface and internal defects. Overall, the tensile properties of the two formulations were nearly identical, but those of the ACC system were more consistent. The properties of the ACC matrix formulation were measured in tension, shear, and compression and the average properties obtained in these …
Date:
April 2, 2001
Creator:
DeTeresa, S J; Allison, L M; Cunningham, B J; Freeman, DC; Saculla, M D; Sanchez, R J et al.
Object Type:
Report
System:
The UNT Digital Library
Anderson Localization of Ballooning Modes, Quantum Chaos and the Stability of Compact Quasiaxially Symmetric Stellarators
The radially local magnetohydrodynamic (MHD) ballooning stability of a compact, quasiaxially symmetric stellarator (QAS), is examined just above the ballooning beta limit with a method that can lead to estimates of global stability. Here MHD stability is analyzed through the calculation and examination of the ballooning mode eigenvalue isosurfaces in the 3-space [s, alpha, theta(subscript ''k'')]; s is the edge normalized toroidal flux, alpha is the field line variable, and q(subscript ''k'') is the perpendicular wave vector or ballooning parameter. Broken symmetry, i.e., deviations from axisymmetry, in the stellarator magnetic field geometry causes localization of the ballooning mode eigenfunction, and gives rise to new types of nonsymmetric eigenvalue isosurfaces in both the stable and unstable spectrum. For eigenvalues far above the marginal point, isosurfaces are topologically spherical, indicative of strong ''quantum chaos.'' The complexity of QAS marginal isosurfaces suggests that finite Larmor radius stabilization estimates will be difficult and that fully three-dimensional, high-n MHD computations are required to predict the beta limit.
Date:
October 31, 2001
Creator:
Redi, M. H.; Johnson, J. L.; Klasky, S.; Canik, J.; Dewar, R. L. & Cooper, W. A.
Object Type:
Report
System:
The UNT Digital Library
Co-design of software and hardware to implement remote sensing algorithms
Both for offline searches through large data archives and for onboard computation at the sensor head, there is a growing need for ever-more rapid processing of remote sensing data. For many algorithms of use in remote sensing, the bulk of the processing takes place in an 'inner loop' with a large number of simple operations. For these algorithms, dramatic speedups can often be obtained with specialized hardware. The difficulty and expense of digital design continues to limit applicability of this approach, but the development of new design tools is making this approach more feasible, and some notable successes have been reported. On the other hand, it is often the case that processing can also be accelerated by adopting a more sophisticated algorithm design. Unfortunately, a more sophisticated algorithm is much harder to implement in hardware, so these approaches are often at odds with each other. With careful planning, however, it is sometimes possible to combine software and hardware design in such a way that each complements the other, and the final implementation achieves speedup that would not have been possible with a hardware-only or a software-only solution. We will in particular discuss the co-design of software and hardware to achieve …
Date:
January 1, 2001
Creator:
Theiler, J. P. (James P.); Frigo, J. (Janette); Gokhale, M. (Maya) & Szymanski, J. J. (John J.)
Object Type:
Article
System:
The UNT Digital Library
A holistic look at minimizing adverse environmental impact under section 316(b) of the clean water act.
None
Date:
August 14, 2001
Creator:
Veil, J. A.; Puder, M. G.; Littleton, D. J. & Johnson, N.
Object Type:
Article
System:
The UNT Digital Library
Grain orientation and strain measurements in sub-micron wide passivated individual aluminum test structures
An X-ray microdiffraction dedicated beamline, combining white and monochromatic beam capabilities, has been built at the Advanced Light Source. The purpose of this beamline is to address the myriad of problems in Materials Science and Physics that require submicron x-ray beams for structural characterization. Many such problems are found in the general area of thin films and nano-materials. For instance, the ability to characterize the orientation and strain state in individual grains of thin films allows us to measure structural changes at a very local level. These microstructural changes are influenced heavily by such parameters as deposition conditions and subsequent treatment. The accurate measurement of strain gradients at the micron and sub-micron level finds many applications ranging from the strain state under nano-indenters to gradients at crack tips. Undoubtedly many other applications will unfold in the future as we gain experience with the capabilities and limitations of this instrument. We have applied this technique to measure grain orientation and residual stress in single grains of pure Al interconnect lines and preliminary results on post-electromigration test experiments are presented. It is shown that measurements with this instrument can be used to resolve the complete stress tensor (6 components) in a submicron …
Date:
March 1, 2001
Creator:
Tamura, N.; Valek, B. C.; Spolenak, R.; MacDowell, A. A.; Celestre, R. S.; Padmore, H. A. et al.
Object Type:
Article
System:
The UNT Digital Library