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Defense Acquisitions: DOD Management Approach and Processes Not Well-Suited to Support Development of Global Information Grid (open access)

Defense Acquisitions: DOD Management Approach and Processes Not Well-Suited to Support Development of Global Information Grid

A letter report issued by the Government Accountability Office with an abstract that begins "Department of Defense (DOD) officials currently estimate that the department will spend approximately $34 billion through 2011 to develop the core network of the Global Information Grid (GIG), a large and complex undertaking intended to provide on-demand and real-time data and information to the warfighter. DOD views the GIG as the cornerstone of information superiority, a key enabler of network-centric warfare, and a pillar of defense transformation. A high degree of coordination and cooperation is needed to make the GIG a reality. In prior work GAO found that enforcing investment decisions across the military services and assuring management attention and oversight of the GIG effort were key management challenges facing DOD. This report assesses (1) the management approach that DOD is using to develop the GIG and (2) whether DOD's three major decision-making processes support the development of a crosscutting, departmentwide investment, such as the GIG."
Date: January 30, 2006
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
An analysis of model tropospheric response to various forcings (open access)

An analysis of model tropospheric response to various forcings

None
Date: January 30, 2006
Creator: Hnilo, J J & Christy, J R
Object Type: Article
System: The UNT Digital Library
Surface and Tower Meteorological Instrumentation at NSA Handbook - January 2006 (open access)

Surface and Tower Meteorological Instrumentation at NSA Handbook - January 2006

The Surface and Tower Meteorological Instrumentation at Atqasuk (METTWR2H) uses mainly conventional in situ sensors to measure wind speed, wind direction, air temperature, dew point and humidity mounted on a 10-m tower. It also obtains barometric pressure, visibility, and precipitation data from sensors at or near the base of the tower. In addition, a Chilled Mirror Hygrometer is located at 1 m for comparison purposes. Temperature and relative humidity probes are mounted at 2 m and 5 m on the tower. For more information, see the Surface and Tower Meteorological Instrumentation at Atqasuk Handbook.
Date: January 30, 2006
Creator: Ritsche, M. T.
Object Type: Report
System: The UNT Digital Library
Quality Assurance Source Requirements Traceability Database (open access)

Quality Assurance Source Requirements Traceability Database

At the Yucca Mountain Project the Project Requirements Processing System assists in the management of relationships between regulatory and national/industry standards source criteria, and Quality Assurance Requirements and Description document (DOE/R W-0333P) requirements to create compliance matrices representing respective relationships. The matrices are submitted to the U.S. Nuclear Regulatory Commission to assist in the commission's review, interpretation, and concurrence with the Yucca Mountain Project QA program document. The tool is highly customized to meet the needs of the Office of Civilian Radioactive Waste Management Office of Quality Assurance.
Date: January 30, 2006
Creator: MURTHY, R., NAYDENOVA, A., DEKLEVER, R., BOONE, A.
Object Type: Article
System: The UNT Digital Library
Development of a Black Carbon Standard for Thermal-OpticalAnalysis (open access)

Development of a Black Carbon Standard for Thermal-OpticalAnalysis

Carbonaceous aerosols affect air quality and climate, but measurements of black (BC) and organic (OC) carbon concentrations are very uncertain. Many variants of the thermal-optical analysis (TOA) method exist, and more than a decade of research has not resolved the differences in their estimates of OC and BC (i.e., the OC/BC split). This is largely due to the lack of a BC standard. Without a BC standard, the accuracy of TOA measurements of OC and BC cannot be determined. The research goal is to develop a method of producing BC standards that can be used to determine the accuracy in TOA measurements of OC and BC. The uncertainty in TOA measurements is due to the presence of both OC and BC in particulate matter. Whereas measuring total carbon (TC) is straightforward, OC pyrolysis and charring and premature evolution of BC render determination of the OC/BC split uncertain (and method dependent) (1,2,3). If a particulate matter sample containing only OC or BC was analyzed by TOA, there would be little uncertainty in the measurement. Our approach to developing a standard for TOA, therefore, is to (1) generate particulate matter composed only of BC and fully characterize the physical and optical properties …
Date: January 30, 2006
Creator: Kirchstetter, Thomas
Object Type: Report
System: The UNT Digital Library
The Rosetta Resources CO2 Storage Project - A WESTCARB Geologic Pilot Test (open access)

The Rosetta Resources CO2 Storage Project - A WESTCARB Geologic Pilot Test

WESTCARB, one of seven U.S. Department of Energypartnerships, identified (during its Phase I study) over 600 gigatonnesof CO2 storage capacity in geologic formations located in the Westernregion. The Western region includes the WESTCARB partnership states ofAlaska, Arizona, California, Nevada, Oregon and Washington and theCanadian province of British Columbia. The WESTCARB Phase II study iscurrently under way, featuring three geologic and two terrestrial CO2pilot projects designed to test promising sequestration technologies atsites broadly representative of the region's largest potential carbonsinks. This paper focuses on two of the geologic pilot studies plannedfor Phase II -referred to-collectively as the Rosetta-Calpine CO2 StorageProject. The first pilot test will demonstrate injection of CO2 into asaline formation beneath a depleted gas reservoir. The second test willgather data for assessing CO2 enhanced gas recovery (EGR) as well asstorage in a depleted gas reservoir. The benefit of enhanced oil recovery(EOR) using injected CO2 to drive or sweep oil from the reservoir towarda production well is well known. EaR involves a similar CO2 injectionprocess, but has received far less attention. Depleted natural gasreservoirs still contain methane; therefore, CO2 injection may enhancemethane production by reservoir repressurization or pressure maintenance.CO2 injection into a saline formation, followed by injection into adepleted natural …
Date: January 30, 2006
Creator: Trautz, Robert; Benson, Sally; Myer, Larry; Oldenburg, Curtis; Seeman, Ed; Hadsell, Eric et al.
Object Type: Article
System: The UNT Digital Library
Design and implementation of an emergency environmental responsesystem to protect migrating salmon in the lower San Joaquin River,California (open access)

Design and implementation of an emergency environmental responsesystem to protect migrating salmon in the lower San Joaquin River,California

In the past decade tens of millions of dollars have beenspent by water resource agencies in California to restore the nativesalmon fishery in the San Joaquin River and its major tributaries. Anexcavated deep water ship channel (DWSC), through which the river runs onits way to the Bay/Delta and Pacific Ocean, experiences episodes of lowdissolved oxygen which acts as a barrier to anadromous fish migration anda threat to the long-term survival of the salmon run. An emergencyresponse management system is under development to forecast theseepisodes of low dissolved oxygen and to deploy measures that will raisedissolved oxygen concentrations to prevent damage to the fisheryresource. The emergency response management system has been designed tointeract with a real-time water quality monitoring network and is servedby a comprehensive data management and forecasting model toolbox. TheBay/Delta and Tributaries (BDAT) Cooperative Data Management System is adistributed, web accessible database that contains terabytes ofinformation on all aspects of the ecology of the Bay/Delta and upperwatersheds. The complexity of the problem dictates data integration froma variety of monitoring programs. A unique data templating system hasbeen constructed to serve the needs of cooperating scientists who wish toshare their data and to simplify and streamline data uploading into themaster database. …
Date: January 30, 2006
Creator: Quinn, Nigel W.T. & Jacobs, Karl C.
Object Type: Article
System: The UNT Digital Library
Navy Littoral Combat Ship (LCS): Background and Issues for Congress (open access)

Navy Littoral Combat Ship (LCS): Background and Issues for Congress

None
Date: January 30, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Letter from Ken Whalen to the TDNA Directors, January 30, 2006] (open access)

[Letter from Ken Whalen to the TDNA Directors, January 30, 2006]

Letter from Ken Whalen to the TDNA Directors on January 30, 2006 with the subject Election of 2006 Treasurer and Appointment of New Director. The letter begins with the news that Gary Borders has been elected treasurer of the TDNA board of directors for 2006, however, it is time to appoint a new board member to replace Borders previous position as director. The nomination committee has recommended McAllen Monitor publisher M. Olaf Frandsen to fill Border's term. Attached to the letter is a response form needed to be faxed back with the the director's responses.
Date: January 30, 2006
Creator: Whalen, Ken
Object Type: Letter
System: The UNT Digital Library
Amplitude Dependence of Time of Flight. (open access)

Amplitude Dependence of Time of Flight.

Machida found in tracking studies [Shinji Machida, presentation at the FFAG05 Workshop, Kyoto University Research Reactor Institute, Osaka, Japan, 5-9 December 2005] that the time of flight in a linear non-scaling FFAG depended on the transverse amplitude of the particles. I compute a relationship between the transverse amplitude dependence of the time of flight and the variation of tune with energy and explain its physical origin.
Date: January 30, 2006
Creator: Berg, J. S.
Object Type: Article
System: The UNT Digital Library
Summary of the FFAG05 Workshop at KEK (open access)

Summary of the FFAG05 Workshop at KEK

The FFAG05 workshop at KEK is one in a series of important annual gatherings of scientists working in the area of fixed field alternating gradient accelerators (FFAGs). At this workshop, we heard of many FFAG designs that are in operation, under construction, and in the planning stages. These machines are being used for a wide variety of applications. We also had a great deal of discussion of some of the theoretical aspects of FFAG design. This paper attempts to give a coherent summary of the workshop, and hopefully serves as an introduction to the more detailed papers in the workshop proceedings.
Date: January 30, 2006
Creator: Berg, J. S.
Object Type: Article
System: The UNT Digital Library
Update on electron-cloud power deposition for the LHC arcdipoles (open access)

Update on electron-cloud power deposition for the LHC arcdipoles

We revisit the estimation of the power deposited by the electron cloud (EC) in the arc dipoles of the LHC by means of simulations. We adopt, as simulation input, a set of electron-related parameters closely resembling those used in recent simulations at CERN [1]. We explore values for the bunch population Nb in the range 0.4 x 10^11 <= Nb <=1.6 x 10^11, peak secondary electron yield (SEY) delta max in the range 1.0 <= delta max <= 2.0, and bunch spacing tb either 25 or 75 ns. For tb=25 ns we find that the EC average power deposition per unit length of beam pipe, dPbar/dz, will exceed the available cooling capacity, which we take to be 1.7 W/m at nominal Nb [2], if delta max exceeds ~1.3, but dPbar/dz will be comfortably within the cooling capacity if delta max <= 1.2. For tb =75 ns dPbar/dz exceeds the cooling capacity only when delta max > 2 and Nb > 1.5 x 10^11 taken in combination. The rediffused component of the secondary electron emission spectrum plays a significant role: if we artificially suppress this component while keeping delta max fixed, dPbar/dz is roughly cut in half for most values of …
Date: January 30, 2006
Creator: Furman, Miguel A. & Chaplin, Vernon H.
Object Type: Article
System: The UNT Digital Library
Operation of the Oxide Washer for Water-Washing Solubles out of Impure Pu Oxide (open access)

Operation of the Oxide Washer for Water-Washing Solubles out of Impure Pu Oxide

An evaluation has been made for using the Oxide Washer to wash water-soluble materials out of impure Pu oxide. It is found that multiple washes are needed to reduce the water-soluble materials to very low levels in the impure Pu oxides. The removal of the wash water from the Oxide Washer is accompanied by particulates of the impure Pu oxide, which subsequently need to be filtered out. In spite of the additional filtration needed, the overall level of manpower required for processing is still only about one third of that for an all-manual operation.
Date: January 30, 2006
Creator: Dodson, K E; Close, W L; Krikorian, O H & Summers III, H V
Object Type: Report
System: The UNT Digital Library
Acoustic Doppler Current Profiler Measurements in the Tailrace at John Day Dam (open access)

Acoustic Doppler Current Profiler Measurements in the Tailrace at John Day Dam

Acoustic Doppler current profilers (ADCPs) were used to measure water velocities in the tailrace at John Day Dam over a two-week period in February 2005. Data were collected by the Pacific Northwest National Laboratory for the Hydraulic Design Section, Portland District, U.S. Army Corps of Engineers (USACE). The objective of this project was therefore to collect field measurements of water velocities in the near-field draft tube exit zone as well as the far-field tailrace to be used for improving these models. Field data were collected during the project using five separate ADCPs. Mobile ADCP data were collected using two ADCPs mounted on two separate boats. Data were collected by either holding the boat on-station at pre-defined locations for approximately 10 minutes or in moving transect mode when the boat would move over large distances during the data collection. Results from the mobile ADCP survey indicated a complex hydrodynamic flow field in the tailrace downstream of John Day Dam. A large gyre was noted between the skeleton section of the powerhouse and non-spilling portion of the spillway. Downstream of the spillway, the spillway flow is constrained against the navigation lock guide wall, and large velocities were noted in this region. Downstream …
Date: January 30, 2006
Creator: Cook, Chris B.; Dibrani, Berhon; Serkowski, John A.; Richmond, Marshall C.; Titzler, P. Scott & Dennis, Gary W.
Object Type: Report
System: The UNT Digital Library
Mislocalization of the Drosophila centromere-specific histone CIDpromotes formation of functional ectopic kinetochores (open access)

Mislocalization of the Drosophila centromere-specific histone CIDpromotes formation of functional ectopic kinetochores

The centromere-specific histone variant CENP-A (CID in Drosophila) is a structural and functional foundation for kinetochore formation and chromosome segregation. Here, we show that overexpressed CID is mislocalized into normally non-centromeric regions in Drosophila tissue culture cells and animals. Analysis of mitoses in living and fixed cells reveals that mitotic delays, anaphase bridges, chromosome fragmentation, and cell and organismal lethality are all direct consequences of CID mislocalization. In addition, proteins that are normally restricted to endogenous kinetochores assemble at a subset of ectopic CID incorporation regions. The presence of microtubule motors and binding proteins, spindle attachments, and aberrant chromosome morphologies demonstrate that these ectopic kinetochores are functional. We conclude that CID mislocalization promotes formation of ectopic centromeres and multicentric chromosomes, which causes chromosome missegregation, aneuploidy, and growth defects. Thus, CENP-A mislocalization is one possible mechanism for genome instability during cancer progression, as well as centromere plasticity during evolution.
Date: January 30, 2006
Creator: Heun, Patrick; Erhardt, Sylvia; Blower, Michael D.; Weiss,Samara; Skora, Andrew D. & Karpen, Gary H.
Object Type: Article
System: The UNT Digital Library
Enhanced Attenuation: A Reference Guide On Approaches To Increase The Natural Treatment Capacity Of A System (open access)

Enhanced Attenuation: A Reference Guide On Approaches To Increase The Natural Treatment Capacity Of A System

The objective of this document is to explore the realm of enhancements to natural attenuation processes for cVOCs and review examples that have been proposed, modeled, and implemented. We will identify lessons learned from these case studies to confirm that enhancements are technically feasible and have the potential to achieve a favorable, cost-effective contaminant mass balance. Furthermore, we hope to determine if opportunities for further improvement of the enhancements exist and suggest areas where new and innovative types of enhancements might be possible.
Date: January 30, 2006
Creator: Vangelas, K
Object Type: Report
System: The UNT Digital Library
Compaction of Expancel Microspheres and Epoxy Foam to 3 GPa (open access)

Compaction of Expancel Microspheres and Epoxy Foam to 3 GPa

Pressure-volume relationships were measured for unexpanded Expancel microspheres, epoxy foam and one specimen of crushed foam powder. The specimens were jacketed in tin canisters and compressed at ambient temperature and low strain rates to 3 GPa in a solid medium press. Pressures were corrected for friction, and specimen volumes were calculated relative to a nickel standard. The pressure-volume curves for each material show large volume reductions at pressures below 0.1 GPa. The curves stiffen sharply at or near full density. Relatively little volume reduction is observed above 0.1 GPa, and most is recovered on unloading. The energy expended in compressing the materials to 3 GPa and the energy recovered on unloading were determined by numerically integrating the pressure-volume curves. The net energy, which includes absorbed energy, was found to be small. Compressibilities and bulk moduli were determined from the slopes of the pressure-volume curves. The Expancel bulk modulus above 0.1 GPa was found to be similar to that of isopentane. The pressure-volume data were fit to a model from the ceramics literature (Kawakita and Ludde, 1970). The model fits provided estimates of the initial specimen porosities and room pressure bulk moduli.
Date: January 30, 2006
Creator: Carlson, S R; Bonner, B P; Ryerson, F J & Chow, C S
Object Type: Report
System: The UNT Digital Library
L1 Report for the Enhanced Surveillance Campaign Experimental Benchmarking of Pu Electronic Structure (open access)

L1 Report for the Enhanced Surveillance Campaign Experimental Benchmarking of Pu Electronic Structure

The objective of this work is to develop and/or apply advanced diagnostics to the understanding of aging of Pu. Advanced characterization techniques such as photoelectron and x-ray absorption spectroscopy will provide fundamental data on the electronic structure of Pu phases. These data are crucial for the validation of the electronic structure methods. The fundamental goal of this project is to narrow the parameter space for the theoretical modeling of Pu aging. The short-term goal is to perform experiments to validate electronic structure calculations of Pu. The long-term goal is to determine the effects of aging upon the electronic structure of Pu. Many of the input parameters for aging models are not directly measurable. These parameters will need to be calculated or estimated. Thus a First Principles-Approach Theory is needed, but it is unclear what terms are important in the Hamiltonian (H{Psi} = E{Psi}). Therefore, experimental data concerning the 5f electronic structure are needed, to determine which terms in the Hamiltonian are important. The data obtained in this task are crucial for reducing the uncertainty of Task LL-01-developed models and predictions. The data impact the validation of electronic structure methods, the calculation of defect properties, the evaluation of helium diffusion, and …
Date: January 30, 2006
Creator: Tobin, J. G.; Chung, B. W.; Moore, K. T.; Yu, S.; Schwartz, A. J.; Wall, M. A. et al.
Object Type: Report
System: The UNT Digital Library
Input to NAS Plasma 2010 panel (open access)

Input to NAS Plasma 2010 panel

A number of areas of plasma physics have had outstanding success over the last decade. The author comments on progress in understanding and manipulating particle beams, a variety of non-neutral plasmas. Some of the key manipulations were made possible by immersing a particle beam in neutral plasma in order to greatly reduce space-charge forces on the beam.
Date: January 30, 2006
Creator: Molvik, A W
Object Type: Report
System: The UNT Digital Library
Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs (open access)

Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs

During this last quarter of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), our efforts have become focused on technology transfer. To this end, we completing our theoretical developments, generating recommended processing flows, and perfecting our rock and fluid properties interpretation techniques. Some minor additional data analysis and modeling will complete our case studies. During this quarter we have: Presented findings for the year at the DHI/FLUIDS meeting at UH in Houston; Presented and published eight papers to promote technology transfer; Shown how Rock and fluid properties are systematic and can be predicted; Shown Correct values must be used to properly calibrate deep-water seismic data; Quantified and examined the influence of deep water geometries in outcrop; Compared and evaluated hydrocarbon indicators for fluid sensitivity; Identified and documented inappropriate processing procedures; Developed inversion techniques to better distinguish hydrocarbons; Developed new processing work flows for frequency-dependent anomalies; and Evaluated and applied the effects of attenuation as an indicator. We have demonstrated that with careful calibration, direct hydrocarbon indicators can better distinguish between uneconomic ''Fizz'' gas and economic hydrocarbon reservoirs. Some of this progress comes from better characterization of fluid and rock properties. Other aspects include alternative techniques …
Date: January 30, 2006
Creator: Batzle, Michael; Han, D-h; Gibson, R. & James, Huw
Object Type: Report
System: The UNT Digital Library
Hydraulic Characteristics of the Lower Snake River During Periods of Juvenile Fall Chinook Migration (open access)

Hydraulic Characteristics of the Lower Snake River During Periods of Juvenile Fall Chinook Migration

This report documents a four-year study to assess hydraulic conditions in the lower Snake River. The work was conducted for the Bonneville Power Administration, U.S. Department of Energy, by the Pacific Northwest National Laboratory. Cold water released from the Dworshak Reservoir hypolimnion during mid- to late-summer months cools the Clearwater River far below equilibrium temperature. The volume of released cold water augments the Clearwater River, and the combined total discharge is on the order of the Snake River discharge when the two rivers meet at their confluence near the upstream edge of Lower Granite Reservoir. With typical temperature differences between the Clearwater and Snake rivers of 10°C or more during July and August, the density difference between the two rivers during summer flow augmentation periods is sufficient to stratify Lower Granite Reservoir as well as the other three reservoirs downstream. Because cooling of the river is desirable for migrating juvenile fall Chinook salmon (Oncorhynchus tshawytscha) during this same time period, the amount of mixing and cold water entrained into Lower Granite Reservoir’s epilimnion at the Clearwater/Snake River confluence is of key biological importance to juvenile fall Chinook salmon. Data collected during this project indicates the three reservoirs downstream of Lower …
Date: January 30, 2006
Creator: Cook, Chris B.; Dibrani, Berhon; Richmond, Marshall C.; Bleich, Matthew D.; Titzler, P. Scott & Fu, Tao
Object Type: Report
System: The UNT Digital Library
Pore Connectivity, Episodic Flow, and Unsaturated Diffusion in Fractured Tuff (open access)

Pore Connectivity, Episodic Flow, and Unsaturated Diffusion in Fractured Tuff

We use an integrated approach consisting of experiments and complementary pore-scale network modeling to investigate the occurrence of sparsely connected pore spaces in rock matrices at Yucca Mountain, Nevada, and its implication to matrix diffusion. Imbibition results indicate that pore spaces in devitrified tuff are not well-connected, and that this lack of connectivity is further compounded by episodic flow in fractured devitrified tuff with low matrix permeability. A rigorous methodology for investigating chemical transport in fractured rock under episodic conditions, employing a suite of both sorbing and non-sorbing tracers (including radionuclides U-235, Np-237, and Pu-242), has been developed and implemented. In addition, gas diffusion and synchrotron microtomography techniques have been under development to examine the scaling issues of diffusion and pore connectivity. Preliminary results from experiments and modeling work are presented in this paper, in order to reexamine our understanding of matrix diffusion and to evaluate the impact on diffusive radionuclide retardation of episodic fracture flow and low pore connectivity.
Date: January 30, 2006
Creator: Hu, Q; Ewing, R P; Tomutsa, L & Singleton, M J
Object Type: Article
System: The UNT Digital Library
[Press release: The Black Academy of Arts and Letters will Rock with Two Riveting Programs - "Gut Bucket Gospel. . . From Church to Broadway" and "By a Black Hand"] (open access)

[Press release: The Black Academy of Arts and Letters will Rock with Two Riveting Programs - "Gut Bucket Gospel. . . From Church to Broadway" and "By a Black Hand"]

Press release from the Black Academy of Arts and Letters discussing two upcoming musicals, "Gut Bucket Gospel" and "By a Black Hand," which were produced by the Academy to be performed in February 2006 at the Clarence Muse Cafe Theatre.
Date: January 30, 2006
Creator: Black Academy of Arts and Letters
Object Type: Text
System: The UNT Digital Library
Exhaust Aftertreatment and Low Pressure Loop EGR Applied to an Off-Highway Engine (open access)

Exhaust Aftertreatment and Low Pressure Loop EGR Applied to an Off-Highway Engine

The goal of the project was to demonstrate that low pressure loop EGR incorporating a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF) can be applied to an off-highway engine to meet Tier 3 (Task I) and Interim Tier 4 (Task II) off-road emissions standards. Task I data was collected using a John Deere 8.1 liter engine modified with a low pressure loop EGR system. The engine and EGR system was optimized and final data over the ISO 8178 eight mode test indicated the NOx emissions were less than 4 g/kWh and the PM was less than 0.02 g/kWh which means the engine met the Tier 3 off-road standard. Considerable experimental data was collected and used by Michigan Tech University to develop and calibrate the MTU-Filter 1D DPF model. The MTU-Filter 1D DPF code predicts the particulate mass evolution (deposition and oxidation) in the diesel particulate filter (DPF) during simultaneous loading and during thermal and NO{sub 2}-assisted regeneration conditions. It also predicts the pressure drop across the DPF, the flow and temperature fields, the solid filtration efficiency and the particle number distribution downstream of the DPF. A DOC model was also used to predict the NO{sub 2} upstream …
Date: January 30, 2006
Creator: Baumgard, Kirby; Triana, Antonio; Johnson, John; Yang, Song & Premchand, Kiran
Object Type: Report
System: The UNT Digital Library