Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2008

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 19831 - 19860 of 20037

Full-Text Articles in Entire DC Network

“Redox Pumping” In The Near Surface Missoula Aquifer On The Floodplain Of The Clark Fork River: Surface Water And Groundwaterinteractions And Arsenic Related Chemistry At A Compost Facilitynear A Wastewater Treatment Plant, Donna Lee Smith Jan 2008

“Redox Pumping” In The Near Surface Missoula Aquifer On The Floodplain Of The Clark Fork River: Surface Water And Groundwaterinteractions And Arsenic Related Chemistry At A Compost Facilitynear A Wastewater Treatment Plant, Donna Lee Smith

Graduate Student Theses, Dissertations, & Professional Papers

Arsenic transport in groundwater is evaluated at Eko Compost, a site with measurable levels of arsenic, organic carbon and nutrients in the ground water. The compost facility is located adjacent to the Missoula wastewater treatment plant on a contaminated floodplain of the Clark Fork River in the Missoula Valley, Montana, USA. This site was evaluated over two years for hydrological and chemical characteristics. A series of potentiometric surface maps was created over time and hydraulic conductivity and ground water movement were characterized. Water samples were also collected monthly and results from chemical analyses of the waters were contoured over the …


Children At War: Underage Americans Illegally Fighting The Second World War, Joshua Pollarine Jan 2008

Children At War: Underage Americans Illegally Fighting The Second World War, Joshua Pollarine

Graduate Student Theses, Dissertations, & Professional Papers

For partial fulfillment of the requirements for the degree of Master of Arts in History, this thesis examines a heretofore unstudied aspect of American military history, underage Americans illegally fighting the Second World War. Nothing has been written specifically addressing this topic. The bulk of the research is drawn from oral history interviews with the veterans themselves and primary source documents, intertwined with the minimal amount of secondary source material written on children in contemporary armed conflict, and secondary sources relevant to the period studied. The thesis introduces the unintended legacy constructed of underage Americans fighting America’s wars throughout its …


Development Of A High-Resolution Target Movement Monitoring System For Convergence Monitoring In Mines, Tristan H. Jones Jan 2008

Development Of A High-Resolution Target Movement Monitoring System For Convergence Monitoring In Mines, Tristan H. Jones

Doctoral Dissertations

"The research performed for this dissertation has been conducted with the goal of developing a ground convergence monitor that may better meet the needs of some mines, leading to increased use of ground monitoring programs and reduced fatality rates from falling and sliding rock. The developed monitor is a convergence monitor capable of achieving sensitivities similar to those of currently available convergence meters such as tape extensometers. The monitor is inexpensive and is capable of totally remote operation in some circumstances...A physical model of the meter was developed based on experimental results and compared to a derived theoretical model to …


Modeling And Simulations Of Diphasic Composites For Development Of High Energy Density Dielectrics, Sandeep K. Patil Jan 2008

Modeling And Simulations Of Diphasic Composites For Development Of High Energy Density Dielectrics, Sandeep K. Patil

Doctoral Dissertations

"This research is focused on diphasic dielectric composites for high energy density storage applications in pulsed power and power distribution systems. Composite materials are particularly attractive because they can synergistically combine high permittivity with high breakdown strength of the individual phases. Energy density, which captures permittivity and dielectric breakdown strength as vital material parameters, dominates this research challenge. Avenues for increasing the effective permittivity and breakdown strength may be found by gaining fundamental understanding of the response of diphasic dielectrics to an applied electric field. Improved understanding of these characteristics will ultimately lead to dielectrics with increased energy storage densities. …


Cottonwood Establishment In A Gravel-Bed River, Claudio Ivan Meier Jan 2008

Cottonwood Establishment In A Gravel-Bed River, Claudio Ivan Meier

Graduate Student Theses, Dissertations, & Professional Papers

I investigated the processes of establishment of the cottonwood Populus trichocarpa T.&G. along the pristine, 5th order, wandering floodplain of the gravel-bed Flathead River, Montana, USA. The focus of my research was to determine the mechanisms explaining successful recruitment on recently formed, unvegetated bars, covering a range of spatial scales from within-bar (~ 1 to 10 m) to across-reach (~ 1 to 10 km). Results are based on field observations and measurements over three growth seasons (2005 through 2007), as well as outdoor and laboratory experiments.

At the within-bar scale, I used a paired-plot sampling design to compare closely-located sites …


Thin Film Techniques For The Fabrication Of Nano-Scale High Energy Density Capacitors, James N. Reck Jan 2008

Thin Film Techniques For The Fabrication Of Nano-Scale High Energy Density Capacitors, James N. Reck

Doctoral Dissertations

Dielectric thin films of either TiO₂ or BaTiO₃ were sputtered in O₂/Ar plasmas on Si wafers to thicknesses ranging from approximately 25 to 200 nm with patterned Ni or Pt electrodes sputtered in Ar plasmas at thicknesses from about 20 to 250 nm to form nano-capacitors. Statistical design of experiments (DOE) was used to determine the effects of the deposition power, plasma composition, and deposition temperature on the measured electrical properties of the nano-capacitors. Additional tests to determine the effects of the dielectric and electrode thickness on the measured dielectric responses of the devices were also undertaken. Characterization was performed …


Three-Dimensional Laminar And Turbulent Convection In Separated Flow, Magesh Thiruvengadam Jan 2008

Three-Dimensional Laminar And Turbulent Convection In Separated Flow, Magesh Thiruvengadam

Doctoral Dissertations

"Three-dimensional laminar and turbulent separated flow and heat transfer in plane symmetric sudden expansion and plane backward facing step is examined in this dissertation. In Papers I, II, and III, simulations of 3-D laminar forced convection in plane symmetric expansion is studied...In Paper IV, 3-D turbulent flow measurements using Laser Doppler Velocimeter are made in a backward facing step flow and the three velocity components and the Reynolds stresses are measured in the separated and redeveloping flow region...In Paper V, the 2-D behavior of a thin film that is shear driven by turbulent air flow is simulated"--Abstract, page iv.


Cost Analysis Of Requirements, Design, And Code Reviews And How This Impacts The Cost Of Quality, Mark W. Huston Jan 2008

Cost Analysis Of Requirements, Design, And Code Reviews And How This Impacts The Cost Of Quality, Mark W. Huston

Graduate Student Theses, Dissertations, & Professional Papers

This thesis examines the difference between accepted theoretical and real world return on investment of requirements, design, and code reviews. The differences have a significant impact on the cost of quality. The goal of this thesis is to examine the differences between two data sets (one derived from widely accepted software principles and one derived from real-world data) and draw conclusions about the effectiveness (cost vs. increase defect detection) of reviews based upon these analyses. This thesis will compare accepted relationships pertaining to cost per defect and overall project cost against actual data from a real world project in order …


Densification, Microstructure, And Mechanical Properties Of Zirconium Diboride Based Ultra-High Temperature Ceramics, Sumin Zhu Jan 2008

Densification, Microstructure, And Mechanical Properties Of Zirconium Diboride Based Ultra-High Temperature Ceramics, Sumin Zhu

Doctoral Dissertations

"The first part of this dissertation was aimed at studying the densification of ZrB₂ ceramics by pressureless sintering techniques. Various processes have been applied to coat ZrB₂ powders with polymer precursors, which were used to produce C after charring. After sintering at 1900⁰C, relative density increased of ~70% for uncoated ZrB₂ to >99% for ZrB₂ coated with at least 1.0 wt% C. Thermodynamic analysis suggested that C reacted with and removed oxide impurities (ZrO₂ and B₂O₃) that were present on the ZrB₂ particle surfaces, which promoted densification by minimizing grain coarsening"--Abstract, page iv.


Development Of A Higher-Order Ice Sheet Model Using A Rescaled Coordinate System, James Fishbaugh Jan 2008

Development Of A Higher-Order Ice Sheet Model Using A Rescaled Coordinate System, James Fishbaugh

Graduate Student Theses, Dissertations, & Professional Papers

The Intergovernmental Panel on Climate Change (IPCC) has estimated between 9 and 88 cm of sea level rise over the next hundred years. Of this, only negative 19 to 11 cm is attributed to the largest ice masses on the planet, the Antarctic and Greenland ice sheets. Over the last decade, dramatic activity in the outlet glaciers of Greenland and the Antarctic Peninsula raise the possibility that these large ice sheets will have a much greater contribution to sea level rise over the next century than was predicted by the IPCC. Recent studies have shown these areas are exhibiting decadal …


Disruption Of 8-Hydroxy-2'-Deoxyguanosine Dna Glycosylase (Ogg1) Antioxidant Response Capacity By Sodium Arsenite, David Paul Cox Jan 2008

Disruption Of 8-Hydroxy-2'-Deoxyguanosine Dna Glycosylase (Ogg1) Antioxidant Response Capacity By Sodium Arsenite, David Paul Cox

Graduate Student Theses, Dissertations, & Professional Papers

8-hydroxy-2'-deoxyguanosine DNA glycosylase is the first step and rate-limiting enzyme involved in the removal of 8-hydroxy-2'-deoxyguanosine via the base excision repair pathway. Transcriptional regulation of human Ogg1 is sensitive to redox changes via modulation of intracellular glutathione. In response to changes in glutathione, changes in hOgg1 transcription occur similar to genes regulated by the transcription factor Nrf2. It was determined that positions - 47 to - 44 in the hOgg1 promoter are necessary for basal transcription of Ogg1 determined by site-directed deletion. This region is capable of interacting with nuclear protein determined by binding assays. Furthermore, transcription factor Nrf2 is …


Cover And Contents Jan 2008

Cover And Contents

Turkish Journal of Biology

No abstract provided.


Technology And Signal Processing For Brain-Machine Interfaces, Justin C. Sanchez, Jose C. Principe, Toshikazu Nishida, Rizwan Bashirullah, John G. Harris, José A.B. Fortes Jan 2008

Technology And Signal Processing For Brain-Machine Interfaces, Justin C. Sanchez, Jose C. Principe, Toshikazu Nishida, Rizwan Bashirullah, John G. Harris, José A.B. Fortes

Electrical and Computer Engineering Faculty Research & Creative Works

Brain-machine interfaces (BMIs) aid disabled humans. BMI systems face challenges such as interfacing with neural tissue, selecting the most appropriate control signals, acquiring data and decoding patient intent in implantable or wearable computers. They must be able to adapt to different variety of behavioral states. Today's hybrid BMI systems consume less power and are made to chronically extract control commands from the nervous system. In terms of signal processing approaches, one challenge for BMI data analysis is learning how to handle large multi-input multi-output systems with signal representations that span continuous and discrete time. BMI systems also need sufficient information …


New Method For Approximating Vague Sets To Fuzzy Sets Based On Voting Model, Jian Liu, Zhizhan Liu, Shunxiang Wu, Yongjian Zhang Jan 2008

New Method For Approximating Vague Sets To Fuzzy Sets Based On Voting Model, Jian Liu, Zhizhan Liu, Shunxiang Wu, Yongjian Zhang

Electrical and Computer Engineering Faculty Research & Creative Works

By analyzing Vague Sets voting model, we bring forth a new method for approximating Vague Sets to Fuzzy Sets, and its general process is presented in the article. In a voting model, firstly, we suppose that the abstainers must vote for once more, and the results are close studied. Then the randomicity, uncertainty, and conformity of voting are found. As we know, an abstainer may favor somebody, oppose somebody, or just abstain. In this article, we suppose the distribution of results is consistent with a normal distribution. So, we advance the new approximation method based on Gauss Distribution. © 2008 …


Implementing An Architectural Framework To Define And Deliver Net-Centric Capability To Legacy Military Air Assets Operating Within A System Of Systems, Mark S. Anderson, S. M. Martin, Cihan H. Dagli, Ann K. Miller Jan 2008

Implementing An Architectural Framework To Define And Deliver Net-Centric Capability To Legacy Military Air Assets Operating Within A System Of Systems, Mark S. Anderson, S. M. Martin, Cihan H. Dagli, Ann K. Miller

Engineering Management and Systems Engineering Faculty Research & Creative Works

The United States Air Force (USAF) is implementing an integrated net-centric system of systems for airborne operations in support of the global war on terror (GWOT). The GWOT demands that a successful architecture framework transforms and delivers net-centric assets to the war-fighter in a timely manner. A critical component of this implementation is the transformation of legacy strategic air platforms into net-centric air power assets operating within a system of systems. The System Architectural (SA) framework, and the Department of Defense Architectural Framework (DoDAF) are ways of managing complexity and organizing information within a system of systems network. This paper …


Estimation Of Earthquake Loss Due To Bridge Damage In The St. Louis Metropolitan Area. Ii: Indirect Losses, David Lee Enke, Chakkaphan Tirasirichai, Ronaldo Luna Jan 2008

Estimation Of Earthquake Loss Due To Bridge Damage In The St. Louis Metropolitan Area. Ii: Indirect Losses, David Lee Enke, Chakkaphan Tirasirichai, Ronaldo Luna

Engineering Management and Systems Engineering Faculty Research & Creative Works

An approach to estimate the indirect economic loss due to damaged bridges within the highway system from an earthquake event is presented. The indirect cost considered refers to the increased highway transportation cost only. The study zone covers the St. Louis metropolitan area and its surrounding suburban regions. An earthquake scenario centered in St. Louis, with a magnitude 7.0 is used. The direct earthquake loss was primarily damage to bridges, which causes an increase in travel time and distance within the transportation network. This information is then used as input for the indirect loss model. The indirect loss is examined …


The Effects Of Congressional Elections On Future Equity Market Returns, Vincent Louis Ovlia, David Lee Enke, Michael C. Davis Jan 2008

The Effects Of Congressional Elections On Future Equity Market Returns, Vincent Louis Ovlia, David Lee Enke, Michael C. Davis

Engineering Management and Systems Engineering Faculty Research & Creative Works

As the primary entity responsible for new legislation, Congress is capable of enacting legislation that may affect future market returns. To examine potential effects, the percentage of the House of Representatives and Senate controlled by a political party is examined. Additionally, the effect on returns in a change in the percentage of seats gained or lost in Congressional elections is analyzed. To test both theories, a modified “partisan view” model is adopted. Results point to the fact that equity markets perform better in situations in which power is distributed between political parties.


Fit Numerical Modeling For Emi Discovery And "Design", James L. Drewniak Jan 2008

Fit Numerical Modeling For Emi Discovery And "Design", James L. Drewniak

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.


Block-By-Block Link-Path Analysis And Design With Physics-Based Models, James L. Drewniak Jan 2008

Block-By-Block Link-Path Analysis And Design With Physics-Based Models, James L. Drewniak

Electrical and Computer Engineering Faculty Research & Creative Works

Link-path analysis and design by block can provide insight into performance and tighter performance budgeting.


The Legalities Of Stream Interventions: Accretive Changes To New York State's Riparian Doctrine Ahead, D. S. Pensley Jan 2008

The Legalities Of Stream Interventions: Accretive Changes To New York State's Riparian Doctrine Ahead, D. S. Pensley

Pace Environmental Law Review

No abstract provided.


Negligence In The Air? Should Alternative Liability Theories Apply In Lead Paint Litigation?, John S. Gray, Richard O. Faulk Jan 2008

Negligence In The Air? Should Alternative Liability Theories Apply In Lead Paint Litigation?, John S. Gray, Richard O. Faulk

Pace Environmental Law Review

No abstract provided.


Agency Inaction And The Regulatory Commons Theory: Lessons From New York State's Experience With Dry Cleaner Co-Location , John A. Vassallo Iii Jan 2008

Agency Inaction And The Regulatory Commons Theory: Lessons From New York State's Experience With Dry Cleaner Co-Location , John A. Vassallo Iii

Pace Environmental Law Review

No abstract provided.


Faculty Publications 2007, Lsu Health Sciences Center New Orleans Jan 2008

Faculty Publications 2007, Lsu Health Sciences Center New Orleans

Historical Faculty Publications

This Faculty bibliography contains 623 publications.


Lsuhsc Facilities Daily Update: January 2008, Lsuhsc Property And Facilities Management Jan 2008

Lsuhsc Facilities Daily Update: January 2008, Lsuhsc Property And Facilities Management

LSUHSC Facilities Daily Updates: 2008

LSUHSC Dailly Facilities Updates from January 2008.

These updates describe damage and a timeline of repairs at the LSU Health Sciences Center - New Orleans campus due to Hurricane Katrina which made landfall August 29, 2005.


Editorial: Nutrition Research Reviews, Katherine Younger Jan 2008

Editorial: Nutrition Research Reviews, Katherine Younger

Articles

We are all familiar with the dietary guideline exhorting us to eat so many portions of oily fish per week in order to boost our intakes of n-3 long-chain PUFA, but it is perhaps not so widely realised that the fish must themselves be provided with dietary n-3 long-chain PUFA or, possibly, their precursors (though, as in humans, the ability of carnivorous fish to elongate and desaturate n-3 PUFA appears to be limited).


Deck Replacement - Use Of Extra Coating Thickness Epoxy-Coated Bars, J. A. Ramirez, Rachel Elizabeth Henkhaus Jan 2008

Deck Replacement - Use Of Extra Coating Thickness Epoxy-Coated Bars, J. A. Ramirez, Rachel Elizabeth Henkhaus

JTRP Technical Reports

The results of this study were implemented in the form of design recommendations for bond of epoxy-coated bars with thicker coatings up to 18 mils. The scope of the work included evaluation of AASHTO LRFD (2004) and ACI 318 design recommendedations for the development and splice length of extra epoxy-coating thinkness reinforcing bars in normal-weight concrete bridge decks and a proposed monitoring plan for a generic concrete bridge deck in Indiana where epoxy-coated bars with thicker coatings might be emeployed. The use of the current provisions for development and splice length of epoxy-coated bars in tension in both the AASHTO …


Automating Material Delivery Records, Joo Hyoung (Jay) Lee, Bob Mccullouch Jan 2008

Automating Material Delivery Records, Joo Hyoung (Jay) Lee, Bob Mccullouch

JTRP Technical Reports

This project investigated methods on automating field data collection of materials. The method chosen and investigated was bar codes. The automated process requires material suppliers to produce delivery forms that can be recorded and tracked using bar codes. The report describes a system configuration that shows a conceptual process to electronically transfer materials information between the material supplier, trucking company, INDOT personnel and contractor. Other activities reported include survey results from other state transportation agencies, material suppliers, and concrete paving companies. Also, investigated was how to interface with SiteManager software. Recommendations described hardware options for using bar codes and industry …


Post-Construction Evaluation Of Lime-Treated Soils, Chulmin Jung, Antonio Bobet Jan 2008

Post-Construction Evaluation Of Lime-Treated Soils, Chulmin Jung, Antonio Bobet

JTRP Technical Reports

Lime is used to treat weak subgrade soils during construction of highways. A small amount of lime (4 to 7%) is used to rapidly dehydrate and modify fine grained soils. The modification process improves workability and compactability of the soils. Although the lime modification process is primarily aimed at construction expediency, additional effects such as long-term improvement of stiffness and/or strength by pozzolanic and carbonation cementation reactions are expected. Lime treatment has been employed in Indiana over several decades, but the long-term performance of lime-treated soils has not been well quantified and no field tests have been done on roads …


Alternatives To Fuel Tax: A State Level Perspective, Jungeun (Jen) Oh, Kumares C. Sinha Jan 2008

Alternatives To Fuel Tax: A State Level Perspective, Jungeun (Jen) Oh, Kumares C. Sinha

JTRP Technical Reports

Under the current fuel-tax-based highway financing system, the funding gap between highway needs and revenue available is expected to grow as vehicle fuel economy improves and use of alternative fuels increases. Consequently, the highway financing mechanism needs to be restructured or a different financing strategy undertaken. Previous research provided examples of successful implementation of pricing schemes in terms of design of pricing scheme, technology issues, legal and institutional issues, and public acceptability. Synthesizing this information, a methodological framework was established for evaluation of alternative user charging schemes. Based on the assessment of the current and projected highway revenue and the …


Risk Assessment Of Various Median Treatments Of Rural Interstates, Natalie M. Villwock, Nicolas Paul Blond, Andrzej P. Tarko Jan 2008

Risk Assessment Of Various Median Treatments Of Rural Interstates, Natalie M. Villwock, Nicolas Paul Blond, Andrzej P. Tarko

JTRP Technical Reports

This report presents results of a comprehensive study that evaluates the safety impacts of alternative median treatments on rural freeways. Extensive data were obtained from Indiana, Colorado, Illinois, Iowa, Missouri, New York, Ohio, Oregon, Washington, and Wisconsin. The studied median treatments include AASHTO-recommended treatments: depressed medians, depressed medians with high and lowtensioned cable barriers, and flush medians with concrete barriers. Other treatments used in the freeway design were also studied: medians with berms, sloped medians, and depressed medians with berms. Negative binomial models were developed to predict the frequency of crashes in three categories: single vehicle (SV), multiple vehicles same …