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Normalized Texture Motifs and Their Application to Statistical Object Modeling
A fundamental challenge in applying texture features to statistical object modeling is recognizing differently oriented spatial patterns. Rows of moored boats in remote sensed images of harbors should be consistently labeled regardless of the orientation of the harbors, or of the boats within the harbors. This is not straightforward to do, however, when using anisotropic texture features to characterize the spatial patterns. We here propose an elegant solution, termed normalized texture motifs, that uses a parametric statistical model to characterize the patterns regardless of their orientation. The models are learned in an unsupervised fashion from arbitrarily orientated training samples. The proposed approach is general enough to be used with a large category of orientation-selective texture features.
Date:
March 9, 2004
Creator:
Newsam, S D
Object Type:
Article
System:
The UNT Digital Library
A technique for accelerating the convergence of restarted GMRES
We have observed that the residual vectors at the end of each restart cycle of restarted GMRES often alternate direction in a cyclic fashion, thereby slowing convergence. We present a new technique for accelerating the convergence of restarted GMRES by disrupting this alternating pattern. The new algorithm resembles a full conjugate gradient method with polynomial preconditioning, and its implementation requires minimal changes to the standard restarted GMRES algorithm.
Date:
March 9, 2004
Creator:
Baker, A H; Jessup, E R & Manteuffel, T
Object Type:
Article
System:
The UNT Digital Library
[Email from HG to several recipients]
Email from HG to "Brothers and Sisters" on March 9, 2000 regarding a misunderstanding concerning Carl and Ron, and noting the hard work Raymond McNeel and Al Daniels has put in making the group succeed.
Date:
March 9, 2000
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[2006 Bright Idea Entries for 2005]
Texas Daily Newspaper Association's 2006 Bright Idea entries for work conceived in 2005. A list of newspapers and their work have been nominated for four different levels of the Bright Idea awards, Under 10,000, 10,000 to 35,000, 35,000 to 100,000 and Over 100,000.
Date:
March 9, 2006
Creator:
Texas Daily Newspaper Association
Object Type:
Text
System:
The UNT Digital Library
[Agenda for Speakers at TDNA Annual Meeting, March 10, 2008]
An excel spreadsheet giving details about the Texas Daily Newspaper Associations' Annual Meeting, and the speakers / presenters who will be present. The annual meeting is set for Monday, March 10, 2008 through Tuesday, March 11.
Date:
March 9, 2008
Creator:
Texas Daily Newspaper Association
Object Type:
Text
System:
The UNT Digital Library
Non-Equilibrium Nanoscale Self-Organization
Self-organized one- and two-dimensional arrays of nanoscale surface features ("ripples" and "dots") sometimes form spontaneously on initially flat surfaces eroded by a directed ion beam in a process called "sputter patterning". Experiments on this sputter patterning process with focused and unfocused ion beams, combined with theoretical advances, have been responsible for a number of scientific advances. Particularly noteworthy are (i) the discovery of propagative, rather than dissipative, behavior under some ion erosion conditions, permitting a pattern to be fabricated at a large length scale and propagated over large distances while maintaining, or even sharpening, the sharpest features; (ii) the first demonstration of guided self-organization of sputter patterns, along with the observation that defect density is minimized when the spacing between boundaries is near an integer times the natural spatial period; and (iii) the discovery of metastability of smooth surfaces, which contradicts the nearly universally accepted linear stability theory that predicts that any surface is linearly unstable to sinusoidal perturbations of some wave vector.
Date:
March 9, 2006
Creator:
Aziz, Michael J
Object Type:
Report
System:
The UNT Digital Library
Reconciliation Report
Reconciliation report with an ending account balance of $941.54 reconciled for the period ending on February 28, 2002.
Date:
March 9, 2002
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
A STRUCTURAL INTEGRITY EVALUATION OF THE TANK FARM WASTE TRANSFER SYSTEM
Radioactive supernate, salt, and/or sludge wastes (i.e., high level wastes) are confined in 49 underground storage tanks at the Savannah River Site (SRS). The waste is transported between tanks within and between the F and H area tank farms and other facilities on site via underground and a limited number of aboveground transfer lines. The Department of Energy - Savannah River Operations Office (DOE-SR) performed a comprehensive assessment of the structural integrity program for the Tank Farm waste transfer system at the SRS. This document addresses the following issues raised during the DOE assessment: (1) Inspections of failed or replaced transfer lines indicated that the wall thickness of some core and jacket piping is less than nominal; (2) No corrosion allowance is utilized in the transfer line structural qualification calculations. No basis for neglecting corrosion was provided in the calculations; (3) Wall loss due to erosion is not addressed in the transfer line structural qualification calculations; and (4) No basis is provided for neglecting intergranular stress corrosion cracking in the transfer line structural qualification calculations. The common theme in most of these issues is the need to assess the potential for occurrence of material degradation of the transfer line piping. …
Date:
March 9, 2006
Creator:
Wiersma, B.
Object Type:
Report
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 38, No. 59, Ed. 1 Friday, March 9, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
March 9, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 124, No. 41, Ed. 1 Thursday, March 9, 2000
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
March 9, 2000
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Arlington-Grand Prairie, Tex.), Vol. 29, No. 332, Ed. 1 Thursday, March 9, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
March 9, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 36, No. 53, Ed. 1 Wednesday, March 9, 2005
Free weekly newspaper that includes business and classified advertising.
Date:
March 9, 2005
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Core Sampling in Support of the Vadose Zone Transport Field Study
Over 130 soil samples were collected from three soil borings in support of the VZFTS. The first boring was sampled just prior to the first injection test. The other two borings were sampled after completion of the injection tests. These soil samples were collected using a 7.6 cm (3 in) ID splitspoon sampler, with internal 15 cm (6 in.) long Lexan? liners. The samples ranged in depth from 4 to 17 m (13.5 to 56.5 ft), and were submitted to various laboratories for hydraulic property characterization and/or geochemical/tracer analyses. Preliminary results indicate that the major concentration front of the bromide tracer reached a relative depth of 5 m (below the injection point) 8 days after the final water injection and had migrated to a relative depth of about 7 m, 4 days later.
Date:
March 9, 2001
Creator:
Last, George V. & Caldwell, Todd G.
Object Type:
Report
System:
The UNT Digital Library
Role of U(VI) Adsorption in U(VI) Reduction by Geobacter Species.
None
Date:
March 9, 2009
Creator:
Lovley, Derek, R.
Object Type:
Report
System:
The UNT Digital Library
Technical Report-Final-Electrochemistry of Nanostructured Intercalation Hosts
We have shown that: (1) Li+ ions are inserted reversibly, without diffusion control, up to the level of at least 4 moles Li+ ions per mole for V2O5, in the aerogel (ARG) form (500 m2/g specific surface area) and aerogel-like (ARG-L) form (200 m2/g specific surface area)(6,7,1,2); (2) polyvalent cations (Al+3, Mg+2, Zn+2) may be intercalated reversibly into V2O5 (ARG) with high capacity (approaching 4 equivalents/mole V2O5 (ARG)) for each (5); (3) dopant cations such as Ag+ and Cu+2 increase the conductivity of V2O5 (XRG) up to three orders of magnitude(3), they are electrochemically active – showing reduction to the metallic-state in parallel to intercalation of Li+ ions – but are not released to the electrolyte upon oxidation and Li+ ion release (Cu+2 ions are reduced to Cu metal and reoxidized to Cu+2 in Li+ ion insertion/release cycles, but the copper ions are not released to the electrolyte over more than 400 cycles of the XRG form); (4) we have shown that Cu+2 ion (dopant) and Zn+2 ions (chemical insertion and dopant) occupy the same intercalation site inV2O5 xerogel and aerogel(4); (5) the reversible intercalation of Zn+2, Mg+2, and Al+3 in the ARG(11) indicates that these cations are “mobile”, but …
Date:
March 9, 2009
Creator:
Professor William H. Smyrl, Principal Investigator
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report, Grant DE-FG02-87ER13714, "Fundamental Studies of Metastable Liquids"
Grant DE-FG02-87ER13714 supported fundamental work on the physical properties of metastable liquids from 6/1/87 to 4/30/08. Renewal proposals were submitted every three years (1990, 1993, 1996, 1999, 2002, 2005), and included, in every case, a detailed Final Technical Report on the previous three years. Accordingly, the bulk of this report covers the final 2-year period 5/1/06 to 4/30/08 of this grant, which is not covered in any of the previous Final Technical Reports. This is preceded by a brief overview of the main research objectives and principal accomplishments during these very fruitful and productive 21 years of DOE-funded research.
Date:
March 9, 2009
Creator:
Debenedetti, Pablo G.
Object Type:
Report
System:
The UNT Digital Library
DARHT 2 kA Cathode Development
In the campaign to achieve 2 kA of electron beam current, we have made several changes to the DARHT-II injector during 2006-2007. These changes resulted in a significant increase in the beam current, achieving the 2 kA milestone. Until recently (before 2007), the maximum beam current that was produced from the 6.5-inch diameter (612M) cathode was about 1300 A when the cathode was operating at a maximum temperature of 1140 C. At this temperature level, the heat loss was dominated by radiation which is proportional to temperature to the fourth power. The maximum operating temperature was limited by the damage threshold of the potted filament and the capacity of the filament heater power supply, as well as the shortening of the cathode life time. There were also signs of overheating at other components in the cathode assembly. Thus it was clear that our approach to increase beam current could not be simply trying to run at a higher temperature and the preferred way was to operate with a cathode that has a lower work function. The dispenser cathode initially used was the type 612M made by SpectraMat. According to the manufacturer's bulletin, this cathode should be able to produce more …
Date:
March 9, 2009
Creator:
Henestroza, E.; Houck, T.; Kwan, J. W.; Leitner, M.; Miram, G.; Prichard, B. et al.
Object Type:
Report
System:
The UNT Digital Library
Canada-USA Salmon Shelf Survival Study, 2007-2008 Annual Report.
Historically, salmon stocks from the Columbia River and Snake River formed one of the most valuable fisheries on the west coast of North America. However, salmon and steelhead returns sharply declined during the 1980s and 1990s to reach nearly 1 million fish. Although several factors may be responsible for the decline of Columbia River salmon and steelhead, there is increasing evidence that these drastic declines were primarily attributable to persistently unfavorable ocean conditions. Hence, an understanding of the effects of ocean conditions on salmon production is required to forecast the return of salmon to the Columbia River basin and to assess the efficacy of mitigation measures such as flow regulation on salmon resources in this system. The Canadian Program on High Seas Salmon has been collecting juvenile salmon and oceanographic data off the west coast of British Columbia and Southeast Alaska since 1998 to assess the effects of ocean conditions on the distribution, migration, growth, and survival of Pacific salmon. Here, we present a summary of the work conducted as part of the Canada-USA Salmon Shelf Survival Study during the 2008 fiscal year and compare these results with those obtained from previous years. The working hypothesis of this research is …
Date:
March 9, 2009
Creator:
Trudel, Marc; Tucker, Strahan & Morris, John
Object Type:
Report
System:
The UNT Digital Library
Iraq: U.S. Military Operations
This report discusses US military operations in Iraq. Iraq's chemical, biological, and nuclear weapons programs, together with Iraqi long-range missile development and support for al-Queda terrorism, were the primary justifications put forward for military action.
Date:
March 9, 2004
Creator:
Bowman, Steve
Object Type:
Report
System:
The UNT Digital Library
Victims of Crime Compensation and Assistance: Background and Funding
This report discusses the Crime Victims Fund (CVF or "Fund"), which was established in the U.S. Treasury in 1984 by the Victims of Crime Act (VOCA) to provide a dedicated source of funds for state victim compensation and assistance programs.
Date:
March 9, 2005
Creator:
Wolfe, M. Ann & Franco, Celinda
Object Type:
Report
System:
The UNT Digital Library
DIFFUSION OF H THROUGH PD MEMBRANES EFFECTS OF NON-IDEALITY ON DH AND ED
H diffusion constants, D{sub H}, have been obtained from steady-state fluxes across Pd membranes with the downstream side maintained at p{sub H2} {approx} 0. Good linearity of plots of H flux versus (1/d), where d is the thickness, attests to the H permeation being bulk diffusion controlled in this temperature (423 to 523K) and p{sub H2} range ({le} 0.2 MPa). D{sub H} values have been determined at constant p{sub up} and also at constant (H/Pd)=r conditions. H fluxes through Pd membranes with three different surface treatments have been investigated (polished (un-oxidized), oxidized, and palladized) in order to determine the effects of these pretreatments. The palladized and oxidized membranes give similar D{sub H} values but the polished membranes give values about 12% lower. For diffusion in a concentration gradient D{sub H}*(c{sub H}/RT)(d{mu}{sub H}/dx) is the more proper description, where c{sub H} is the H concentration, rather than D{sub H}(dc{sub H}/dx) where D{sub H} and D{sub H}* are the concentration-dependent and independent diffusion constants. D{sub H}* can be obtained from D{sub H} using the thermodynamic factor, D{sub H}(r) = D{sub H}*({partial_derivative}lnp{sub H2}{sup 1/2}/{partial_derivative}lnr){sub T} = D{sub H}*f(r). In the commonly employed situation where there is a large difference in concentrations between the …
Date:
March 9, 2007
Creator:
Shanahan, K
Object Type:
Article
System:
The UNT Digital Library
Atomistic modeling of shock-induced void collapse in copper
Nonequilibrium molecular dynamics (MD) simulations show that shock-induced void collapse in copper occurs by emission of shear loops. These loops carry away the vacancies which comprise the void. The growth of the loops continues even after they collide and form sessile junctions, creating a hardened region around the collapsing void. The scenario seen in our simulations differs from current models that assume that prismatic loop emission is responsible for void collapse. We propose a new dislocation-based model that gives excellent agreement with the stress threshold found in the MD simulations for void collapse as a function of void radius.
Date:
March 9, 2005
Creator:
Davila, L P; Erhart, P; Bringa, E M; Meyers, M A; Lubarda, V A; Schneider, M S et al.
Object Type:
Article
System:
The UNT Digital Library
Spectroscopy and Kinetics of U02 Fuel Oxidation Hydrolysis and Radiolysis: Applications to Radioactive Waste Management
A Multrireference Density Functional Approach to The Calculation of The Excited States of Uranium Ions
Date:
March 9, 2007
Creator:
Burggraf, Larry & Beck, Eric
Object Type:
Report
System:
The UNT Digital Library
A virtual tall tower network for understanding continental sources and sinks of CO2
Our understanding of the North American terrestrial carbon cycle is limited by both a lack of continental atmospheric CO2 data, and by a need for methods to interpret these and other continental data with confidence. In response to this challenge a rapid expansion of the N. American carbon cycle observational network is underway. This expansion includes a network of continuous, continental CO2 mixing ratio observations being collected at a subset of AmeriFlux towers. Progress in developing this resource includes instrument development, site installation, calibration and intercalibration efforts, and initiation of a uniform data product. Progess in applying these data include proposed methods for interpreting surface layer measurements in atmospheric inversions (the virtual tall towers approach), examination of coherence patterns in continental mixing ratios in response to weather and climate, and application of these mixing ratio measurements in formal atmospheric inversions. Future work will merge these methods with interpretation of flux towers observations of terrestrial carbon fluxes in an effort to create a single coherent diagnosis of North American terrestrial carbon fluxes over a multi-year period.
Date:
March 9, 2007
Creator:
Davis, K. J.; Richardson, S. J. & Miles, N. L.
Object Type:
Report
System:
The UNT Digital Library