Digital Commons Network^™

Optical Estimation Of Auroral Ion Upflow: Theory, M. Zettergren, J. L. Semeter, P. L. Blelly, M. Diaz

Publications

This work presents a systematic analysis of optical emissions related to auroral ion upflow. Optical intensities and field‐aligned ion transport are computed for a set of monoenergetic incident electron beams using a combined fluid‐kinetic model. The kinetic portion models the energetic particle transport with a multiple stream approach and provides ionization, excitation, and heating rates to an eight‐moment fluid model of the ionosphere, which then calculates the resulting ion upflow. The analysis is used to develop a technique for estimating upward ion flux from photometric measurements at five discrete wavelengths: 427.8 nm, 557.7 nm, 630.0 nm, 732 nm, and 844.6 …

The Economic Situation, 2007 December, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.

Impervious Cover Analysis For The Saluda-Reedy Watershed In Upstate South Carolina, 2007 November, Jeffery S. Allen, Vrunda Patki, Arvind Pasula

Publications

No abstract provided.

Patent Coverage In Scientific And Technical Research Databases, Jan Comfort, Leena Lalwani

Publications

Patents play an important role in the research process. Yet, most recent articles about patent searching and sources of patent information focus on tools and techniques used by information professionals, not researchers. This article will compare the features of a number of research databases that provide patent information. The analysis will include a chart listing cost, dates of coverage, search strategies, and the benefits and limitations of each.

Mutation Rate Variation In Eukaryotes: Evolutionary Implications Of Site-Specific Mechanisms, David G. King, Yechezkel Kashi

Publications

No abstract provided.

The Economic Contribution Of Marine Science And Education Institutions In The Monterey Bay Crescent, Judith T. Kildow Dr, Nathaniel Miller

Publications

Ocean and coastal areas of the United States contribute significantly to our nation’s overall economy. The extent to which our economy benefits from the wide range of marine and coastal activities is not completely understood. The National Ocean Economics Program (NOEP) has attempted to track and value the ocean and coastal- related economic activities in the United States. To date six sectors are included in its information system (www.oceaneconomics.org). The economic contribution of marine research and education institutions is a sector of activity that lies outside of the normal federal government datasets, but one which seemed to have growing importance …

Quality And Inspection Of Machining Operations: Review Of Condition Monitoring And Cmm Inspection Techniques 2000 To Present, John T. Roth, Laine Mears, Dragan Djurdjanovic, Xiaping Yang, Thomas Kurfess

Publications

In order to consistently produce quality parts, many aspects of the manufacturing process must be carefully monitored, controlled, and measured. The methods and techniques by which to accomplish these tasks has been the focus of numerous studies in recent years. With the rapid advances in computing technology, the complexity and overhead that can be feasibly incorporated in any developed technique has dramatically improved. Thus, techniques that would have been impractical for implementation just a few years ago can now be realistically applied.

This rapid growth has resulted in a wealth of new capabilities for improving part and process quality and …

Models Of Interdisciplinary Research And Service Learning At Hope College, Aaron A. Best, Matthew Dejongh, Amanda J. Barton, Jeff R. Brown, Christopher C. Barney

Publications

"Children love to explore the world around them. In doing so they are not aware of disciplinary boundaries or even of disciplines. They move freely from watching ants (biology) to building structures (engineering) to counting rocks (mathematics and geology) to seeing what things dissolve in water (chemistry). Only as they go to school do they learn that humans divide up the way we learn about the universe and start to think within disciplinary boundaries. In doing so, those children, who are now us, lose the ability to think broadly and use the insights of various ways of thinking to solve …

Corrosion Effects On Tension Stiffening Behavior Of Reinforced Concrete, M. A. Shayanfar

Publications

The investigation of corrosion effects on the tensile behavior of reinforced concrete (RC) members is very important in region prone to high corrosion conditions. In this article, an experimental study concerning corrosion effects on tensile behavior of RC members is presented. For this purpose, a comprehensive experimental program including 58 cylindrical reinforced concrete specimens under various levels of corrosion is conducted. Some of the specimens (44) are located in large tub containing water and salt (5% salt solution); an electrical supplier has been utilized for the accelerated corrosion program. Afterwards, the tensile behavior of the specimens was studied by means …

Global View Of Sharing Digitized Information: An Interview With Ching-Chi Chen, Eric C. Shoaf

Publications

An interview with Ching-chih Chen, professor of Library and Information Science at Simmons College in Boston, Massachusetts is presented. When asked on the reasons that drove her to work on globalism in librarianship, she refers to the long-term international consulting and speaking on such topic. She states that national governments play important roles in developing global digital library. She stresses that the advances of technology have made it possible to provide universal access.

Enhancement Of Nd: Yag Libs Emission Of A Remote Target Using A Simultaneous Co/Sub 2/ Laser Pulse, Dennis K. Killinger, Susan D. Allen, Robert D. Waterbury, Chris Stefano, Edwin L. Dottery

Publications

For the first time to the best of our knowledge, a simultaneous 10.6 μm CO2 laser pulse has been used to enhance the Laser Induced Breakdown Spectroscopy (LIBS) emission from a 1.064 μm Nd:YAG laser induced plasma on a hard target. The enhancement factor was on the order of 25 to 300 times, depending upon the emission lines observed. For an alumina ceramic substrate the Al emission lines at 308 nm and Fe impurity line at 278 nm showed an increase of 60x and 119x, respectively. The output energy of the Nd:YAG laser was 50 mJ/pulse focused to a 1 …

Shibboleth As A Tool For Authorized Access Control To The Subversion Repository System, Amy Apon, Linh B. Ngo

Publications

Shibboleth is an architecture and protocol for allowing users to authenticate and be authorized to use a remote resource by logging into the identity management system that is maintained at their home institution. With Shibboleth, a federation of institutions can share resources among users and yet allow the administration of both the user access control to resources and the user identity and attribute information to be performed at the hosting or home institution. Subversion is a version control repository system that allows the creation of fine-grained permissions to files and directories. In this project an infrastructure, Shibbolized Subversion, has been …

Shibboleth As A Tool For Authorized Access Control To The Subversion Repository System, Linh B. Ngo, Amy W. Apon

Publications

Shibboleth is an architecture and protocol for allowing users to authenticate and be authorized to use a remote resource by logging into the identity management system that is maintained at their home institution. With Shibboleth, a federation of institutions can share resources among users and yet allow the administration of both the user access control to resources and the user identity and attribute information to be performed at the hosting or home institution. Subversion is a version control repository system that allows the creation of fine-grained permissions to files and directories. In this project an infrastructure, Shibbolized Subversion, has been …

Linking Adult Reproduction And Larval Density Of Invasive Carp In A Large River, Kelly L. Degrandchamp, James E. Garvey, Laura A. Csoboth

Publications

Identifying how temporal variation in the environment affects reproductive success of invasive alien species will aid in predicting future establishment and tracking dynamics of established populations. Asian carp Hypophthalmichthys spp. have become a nuisance in recent years in the Mississippi River basin. Their populations are apparently expanding, indicating favorable conditions for reproduction. During 2004 and 2005, we quantified mean density of Asian carp larvae, mean monthly gonadosomatic index (GSI) of adult males and females, and number of eggs within mature females in the lower Illinois River, a major tributary of the Mississippi River. A flood (water velocity ≥ 0.7 m/s) …

Corrosion Effects On Tension Stiffening Behavior Of Reinforced Concrete, M. A. Shayanfar, M. Ghalehnovi, Amir Safiey

Publications

The investigation of corrosion effects on the tensile behavior of reinforced concrete (RC) members is very important in region prone to high corrosion conditions. In this article, an experimental study concerning corrosion effects on tensile behavior of RC members is presented. For this purpose, a comprehensive experimental program including 58 cylindrical reinforced concrete specimens under various levels of corrosion is conducted. Some of the specimens (44) are located in large tub containing water and salt (5% salt solution); an electrical supplier has been utilized for the accelerated corrosion program. Afterwards, the tensile behavior of the specimens was studied by means …

Complete Chloroplast Genome Sequences Of Hordeum Vulgare, Sorghum Bicolor And Agrostis Stolonifera, And Comparative Analyses With Other Grass Genomes, Susanna Ashton, Seung-Bum Lee, Siri Fjellheim, Chittibabu Guda, Robert K. Jansen, Hong Luo, Jeffrey Tomkins, Odd Arne Rognli, Henry Daniell, Jihong Liu Clarke

Publications

Comparisons of complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor and Agrostis stolonifera to six published grass chloroplast genomes reveal that gene content and order are similar but two microstructural changes have occurred. First, the expansion of the IR at the SSC/IRa boundary that duplicates a portion of the 5′ end of ndhH is restricted to the three genera of the subfamily Pooideae (Agrostis, Hordeum and Triticum). Second, a 6 bp deletion in ndhK is shared by Agrostis, Hordeum, Oryza and Triticum, and this event supports the sister relationship between the subfamilies …

Mutability And Evolvability: Indirect Selection For Mutability, David G. King, Yechezkel Kashi

Publications

No abstract provided.

A Basin-Wide Approach To Water Management In The Middle Rio Grande Valley, Rolf Schmidt-Petersen

Publications

No abstract provided.

Space Suit Concepts And Vehicle Interfaces For The Constellation Program, D. M. Klaus, J. Metts, R. Kobrick, M. Mesloh, T. Monk, Et Al.

Publications

In carrying out NASA’s Vision for Space Exploration, a number of different environments will be encountered that will require the crew to wear a protective space suit. Specifically, four suited mission phases are identified as Launch, Entry & Abort profiles, Contingency 0g (orbital) Extravehicular Activity (EVA), Lunar Surface EVA and Martian Surface EVA. This study presents conceptual design solutions based on a previous architecture assessment that defined space suit operational requirements for four proposed space suit configuration options. In addition, a subset of vehicle interface requirements are defined for enabling umbilical and physical connections between the suits and the various …

Selection Of The Spraying Technologies For Over-Coating Of Metal-Stampings With Thermo-Plastics For Use In Direct-Adhesion Polymer Metal Hybrid Load-Bearing Components, M. Grujicic, V. Sellappan, Laine Mears, X. Xuan, Norbert Seyr, Marc Erdmann, Jochen Holzleitner

Publications

The suitability of various polymer-powder spraying technologies for coating of metal-stampings used in polymer metal hybrid (PMH) load-bearing automotive-component applications is considered. The suitability of the spraying technologies is assessed with respect to a need for metal-stamping surface preparation/treatment, their ability to deposit the polymeric material without significant material degradation, the ability to selectively overcoat the metal-stamping, the resulting magnitude of the polymer-to-metal adhesion strength, durability of the polymer/metal bond with respect to prolonged exposure to high-temperature/high-humidity and mechanical/thermal fatigue service conditions, and compatibility with the automotive body-in-white (BIW) manufacturing process chain. The analysis revealed that while each …

The Value Of Marine Institutions: An Economic Survey Of Marine Research And Education Institutions In Monterey And Santa Cruz Counties, Judith T. Kildow Dr, Nathaniel Miller

Publications

It is recognized that ocean and coastal areas of the United States contribute significantly to our nation’s overall economy. What is not completely understood is the extent to and manner in which our economy benefits from the wide range of marine and coastal activities. One area of the ocean economy that has not been collectively measured or examined is the contribution of marine research and education institutions. The goal of the project was to create a prototype strategy at a local level for collecting data at a national level, in order to create an economic sector of these institutions and …

Internet Enabled Remote Driving Of A Combat Hybrid Electric Power System For Duty Cycle Measurement, Jarrett Goodell, Marc Compere, Wilford Smith, Mark Brudnak, Mike Pozolo, Et Al.

Publications

This paper describes a human-in-the-loop motion-based simulator interfaced to hybrid-electric power system hardware, both of which were used to measure the duty cycle of a combat vehicle in a virtual simulation environment. The project discussed is a greatly expanded follow-on to the experiment published in [1,7]. This paper is written in the context of [1,7] and therefore highlights the enhancements. The most prominent of these enhancements is the integration (in real-time) of the Power & Energy System Integration Lab (P&E SIL) with a motion base simulator by means of a “long haul” connection over the Internet (a geographical distance of …

Numerical Simulation Of Waves And Fronts In Inhomogeneous Solids, A. Berezovski, M. Berezovski, J. Engelbrecht, G. A. Maugin

Publications

Dynamic response of inhomogeneous materials exhibits new effects, which often do not exist in homogeneous media. It is quite natural that most of studies of wave and front propagation in inhomogeneous materials are associated with numerical simulations. To develop a numerical algorithm and to perform the numerical simulations of moving fronts we need to formulate a kinetic law of progress relating the driving force and the velocity of the discontinuity. The velocity of discontinuity is determined by means of the non-equilibrium jump relations at the front. The obtained numerical method generalizes the wave-propagation algorithm to the case of moving discontinuities …

The Economic Situation, 2007 June, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.

The Economic Situation, Correction And Update, 2007 June, Bruce Yandle

Publications

Quarterly report on the economic situation of the United States and South Carolina.

Advisory Committee Recommendations - The Utton Center Model Interstate Water Compact, State Bar Center, State Bar Of New Mexico

Publications

No abstract provided.

Model Interstate Water Compact, Ken Knox

Publications

No abstract provided.

Optical Absorption, Depolarization, And Scatter Of Epitaxial Single-Crystal Chemical-Vapor-Deposited Diamond At 1.064 Μm, Giorgio Turri, Ying Chen, Michael Bass

Publications

No abstract provided.

Optical Properties Of Epitaxial Single-Crystal Chemical-Vapor-Deposited Diamond, Giorgio Turri, Ying Chen, Michael Bass, David Orchard, James E. Butler

Publications

Epitaxial single-crystal chemical-vapor-deposited diamond was obtained from Element Six Ltd. (Ascot, UK) and from Apollo Diamond (Boston, MA). Both companies provided 5 x 5 mm squares with thicknesses ranging from 0.5 to 1.5 mm. In addition, Element Six provided 10-mm-diameter disks with a thickness of 1.0 mm. The absorptance of all specimens at 1064 nm was measured by laser calorimetry, with good agreement between independent measurements at the University of Central Florida and at QinetiQ (Malvern, UK). Depolarization at 1064 nm and ultraviolet absorption properties are also reported.

Uaa Student Showcase Journal: Recognizing Excellence (2007), N/A N/A

Publications

No abstract provided.