Digital Commons Network^™

Measurement Of The Market Data For The Ocean And Coastal Economy, Charles S. Colgan

Publications

This paper supplements reports and data released on the Coastal and Ocean Economies of the United States by the NOEP. It provides a discussion of the relevant literature involved in the investigation of the Ocean and Coastal related Economies, the theoretical background of measures such as gross domestic product (GDP) and gross state product (GSP), and provides details on sources, methods, assumptions, and limitations of the data provided by NOEP.

Those concerned with the health of coastal and ocean resources increasingly need to understand the socio-economic context in which changes are occurring. The market data of the National Ocean Economics …

A Lean Modeling Protocol For Evaluating Green Project Delivery, Leidy E. Klotz, Michael Horman, Mark Bodenschatz

Publications

The first vital step to leaning an operation is to model or map the processes used to deliver value in that operation. This allows the requisite understanding of where waste and non value-adding activity exists, and provides the foundation for improvement. Current protocols for modeling operations present the basic tenets for lean mapping, but tend to be based in manufacturing language, and are not easily adapted to capital facilities projects. “Green” or “sustainable” capital projects delivered using current project delivery systems seem to be laden with hidden waste. These projects tend to be more challenging to deliver due increased levels …

From The Reference Desk To River City: A Bibliography Of The Writings Of Robert C. Berring, Frank G. Houdek

Publications

Professor Houdek documents the prolific and eclectic body of work of Robert C. Berring, including the books, chapters, articles, and assorted other materials he has written to date on subjects ranging from law libraries and legal information to legal research instruction and Chinese law and history.

Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov

Publications

We present an analysis of a point mass, point foot, planar inverted pendulum model for bipedal walking. Using this model, we derive expressions for a conserved quantity, the “Orbital Energy”, given a smooth Center of Mass trajectory. Given a closed form Center of Mass Trajectory, the equation for the Orbital Energy is a closed form expression except for an integral term, which we show to be the first moment of area under the Center of Mass path. Hence, given a Center of Mass trajectory, it is straightforward and computationally simple to compute phase portraits for the system. In fact, for …

Doppler Ducting Of Short-Period Gravity Waves By Midaltitude Tidal Wind Structure, Jonathan B. Snively, Victor P. Pasko, Michael J. Taylor, Wayne K. Hocking

Publications

Multiwavelength airglow image data depicting a short-period (∼4.9 min) atmospheric gravity wave characterized by a sharp leading front have been analyzed together with synoptic meteor radar wind data recorded simultaneously from Bear Lake Observatory, Utah (41.6°N, 111.6°W). The wind data suggest the presence of a semidiurnal tide with horizontal winds peaking at around 60 m/s along the SSE direction of motion (170° from north) of this short-period wave. It was found that the gravity wave was most probably ducted because of the Doppler shift imposed by this wind structure. A marked 180° phase shift was observed between the near-infrared OH …

Poisson-Boltzmann Calculations Of Nonspecific Salt Effects On Protein-Protein Binding Free Energies, Claudia Bertonati, Barry Honig, Emil Alexov

Publications

The salt dependence of the binding free energy of five protein-protein hetero-dimers and two homo-dimers/tetramers was calculated from numerical solutions to the Poisson-Boltzmann equation. Overall, the agreement with experimental values is very good. In all cases except one involving the highly charged lactoglobulin homo-dimer, increasing the salt concentration is found both experimentally and theoretically to decrease the binding affinity. To clarify the source of salt effects, the salt-dependent free energy of binding is partitioned into screening terms and to self-energy terms that involve the interaction of the charge distribution of a monomer with its own ion atmosphere. In six of …

The Economic Situation, 2007 March, Bruce Yandle

Publications

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

Real-Time System Identification For Impact-Based Part Positioning, Laine Mears, Jeannie Falcon

Publications

Simplified part positioning in manufacturing has been achieved using pushing or tapping actuation in place of more complex pick-and-place systems. However, positioning by impact introduces a new source of uncertainty: interfacial frictional effects of sliding, which can result in an uncontrollable and often poorlypredictable actuation distance. The described work provides a friction-based dynamic model of the sliding distance after impact that is used to predict static friction characteristics. A prototype system is simulated and validation data used to improve the model. A control algorithm is also described, tested and validated over a range of actuated masses.

Toxic Pollution In Casco Bay: Sources And Impacts, Casco Bay Estuary Partnership

Publications

This report complements and expands upon the information in the 2005 Casco Bay Estuary Partnership report State of the Bay. This current report, Toxic Pollution in Casco Bay, details studies undertaken by Casco Bay Estuary Partnership (CBEP) and others on some of the sources of toxic chemicals entering the Bay and its watershed, on the impacts of toxic chemicals on Casco Bay wildlife, and on potential risks to human consumers of fish and shellfish. The report does not, however, address groundwater pollution and drinking water issues. The report conludes with ways that CBEP and partner organizations are working …

The Potential Economic Impact Of An Off-Shore Wind Farm To The State Of South Carolina, 2007 February, Roger J. Flynn, Robert T. Carey

Publications

No abstract provided.

Alliance Policy Updates, 2007 February, Author Unknown

Publications

No abstract provided.

Design Of A Flexible Centering Tooling System, Laine Mears, Francis M. Kolartis, Michael Thompson, Thomas R. Kurfess

Publications

Precise machining of bearing rings is integral to finished bearing assembly quality. The output accuracy of centre-based machining systems relates directly to the precision of part centring before machining. Traditional tooling is subject to wear, dimensional inaccuracy and human error. A flexible tooling system for initial part centring is proposed based on a single measurement system and actuator. In this system, the part is rotated and measured to identify centre of geometry offset from centre of rotation, then moved by a series of pushes to align the centres. The actuation algorithm is self-modifying based on residual error. This tooling control …

Soldier/Hardware-In-The-Loop Simulation-Based Combat Vehicle Duty Cycle Measurement: Duty Cycle Experiment 2, Mark Brudnak, Mike Pozolo, Victor Paul, Syed Mohammad, Marc Compere, 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]. This paper is written in the context of [1] and therefore highlights the enhancements. The most prominent of these enhancements is the integration (in real-time) of the Power & Electric 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 …

Non-Shipping Pathways For Marine Invasive Species In Maine, Shannon Weigle

Publications

No abstract provided.

Atraumatic Oral Spray Immunization With Replication-Deficient Viral Vector Vaccines, Christiane P. Stahl-Hennig, Seraphin Kuate, Monika Franz

Publications

The development of needle-free vaccines is one of the recently defined "grand challenges in global health" (H. Varmus, R. Klausner, R. Klausner, R. Zerhouni, T. Acharya, A. S. Daar, and P. A. Singer, Science 302:398-399, 2003). To explore whether a natural pathway to the inductive site of the mucosa-associated lymphatic tissue could be exploited for atraumatic immunization purposes, replication-deficient viral vector vaccines were sprayed directly onto the tonsils of rhesus macaques. Tonsillar immunization with viral vector vaccines encoding simian immunodeficiency virus (SIV) antigens induced cellular and humoral immune responses. Viral RNA levels after a stringent SIV challenge were reduced, providing …

Causal Analysis Of Biological Impairment In Long Creek: A Sandy-Bottomed Stream In Coastal Southern Maine, United States Environmental Protection Agency, National Center For Environmental Assessment

Publications

No abstract provided.

Recommendations For Future Restoration And Management Efforts For Mill Brook, Westbrook, Maine: Appendix C. Preliminary Culvert Photos, Casco Bay Estuary Partnership

Publications

No abstract provided.

Sebago Lake Ecology Center’S Pervious Pathway: A Low Impact Development Demonstration, Portland Water District

Publications

No abstract provided.

Differences In Rust In Hearing Aid Batteries Across Four Manufacturers, Four Battery Sizes, And Five Durations Of Exposure, Michael Valente, Jamie H. Cadieux, Laura Flowers, John G. Newman, Juergen Scherer, Gerg Gephart

Publications

No abstract provided.

Enrollment Model Proposal Executive Summary, 2007, Author Unknown

Publications

No abstract provided.

Funding And Managing South Carolina's Roads And Highways, 2007, Clinton H. Whitehurst Jr.

Publications

No abstract provided.

Should There Be A National Curriculum For Technological Literacy?, Laura J. Hummell, Ethan B. Lipton, Melissa Morrow, Jerry Streichler, Karen Zuga

Publications

The author discusses her belief that the United States should have a national curriculum for technological literacy. The author asserts that there are huge discrepancies and deficiencies existing in technology-based curricula, and as a result students in the United States are being ill-prepared for living and working in a globally based economy and society. The author believes that if a national curriculum for technological literacy is developed it should resemble the Standards for Technological Literacy (2000/2002), which was created by the International Technology Education Association. The author points out that in order for such a curriculum to be successful it …

Resources: Student Friendly Modeling Materials, Todd R. Kelley, Jared Berrett

Publications

The article presents cost-effective materials for elementary classrooms that allow students to create models. These materials include card stock, clay, cable or zips ties, fasteners and bolts, and commercially manufactured building kits such as LEGOs, Erector Sets, Tinkertoys and K'Nex. In addition, the author asserts the importance of using such materials in promoting student learning of technology and engineering.

Resources: Building Big (And Small), Todd R. Kelley

Publications

The article offers a set of videos and web resources for elementary teachers to help them explore five different structures, including bridges, domes, skyscrapers, dams, and tunnels, that have been built big to meet the human needs and wants. It includes the miniseries video "Building Big" by David Macaulay and the website www.pbs.org/buildingbig.com.

Curricular Value And Instructional Needs For Infusing Engineering Design Into K-12 Technology Education, David K. Gattie, Robert C. Wicklein

Publications

An overarching objective of Technology Education in the U.S. is to improve technological literacy among K-12 students (DeVore, 1964; Savage and Sterry, 1990; International Technology Education Association, 1996, 2000, 2003). This is addressed in part through a focus on end-product technology and the use and importance of various technologies in society (Savage and Sterry, 1990). While such a focus is certainly necessary, it may not be sufficient if the objective is to infuse engineering into the technology education field. Current efforts at the University of Georgia propose adjusting the focus of Technology Education to a defined emphasis on engineering design …

Critical Features Of Engineering Design In Technology Education, Paul A. Asunda, Roger Hill

Publications

The purpose of this study was to find critical features of engineering design that can be incorporated within technology education learning activities, and develop a rubric for assessing these features. Data were collected through semi-structured interviews with three professors actively involved in engineering education. Supporting documents such as engineering design course outlines and rubrics were also examined. Using a phenomenological approach, this study identified the concept of engineering design, key features of the engineering design process, and critical elements that should be assessed in an engineering design activity in the context of technology education. A key product of the study …

Science And The Storms: The Usgs Response To The Hurricanes Of 2005 - Chapter Six: Ecological Impacts, William Conner, Stephen Faulkner, Wylie Barrow, Brady Couvillion, Lori Randall, Michael Baldwin

Publications

Ecological impacts from the hurricanes of 2005 affected both vegetation and the animals that depend on coastal habits on land and in water. Discussed in this section are migratory birds, coastal marsh vegetation, chenier forests, coastal floodplain forests, mangrove forests, estuaries, and the endangered manatee.

Conservation And Use Of Coastal Wetland Forests In Louisiana, William Conner, Stephen P. Faulkner, Jim L. Chambers, Richard F. Keim, John W. Day, Emile S. Gardiner, Melinda S. Hughes, Sammy L. King, Kenneth W. Mcleod, Craig A. Miller, J Andrew Nyman, Gary P. Shaffer

Publications

The natural ecosystems of coastal Louisiana reflect the underlying geomorphic processes responsible for their formation. The majority of Louisiana's wetland forests are found in the lower reaches of the Mississipp Alluvial Valley and the Deltaic Plain. The sediments, water, and energy of the Mississippi River have shaped the Deltaic Plain as natural deltas have been formed and abandoned over the last 5,000 years (Coleman et al. 1998). During the regressive or constructional phase of the delta cycle, the system is dominated by freshwater riverine inputs with the formation of corresponding freshwater marshes and swamps, which then deteriorate during the marine-dominated …

Economic Impact Of Ubiquitous Wireless Internet In South Carolina, 2007 January, Robert T. Carey, Camilla Hertwig

Publications

No abstract provided.

Impulsive-Actuation Part Positioning Through Constrained Energy Balance Planning, Laine Mears, Thomas R. Kurfess

Publications

Impulsive actuation has been researched in the past two decades as an inexpensive alternative to multi-degree-of-freedom precision positioning systems. The position of a sliding workpiece can be controlled by a 2-degree-offreedom actuation system through simple pushing path planning. However, the final part position as a result of the last touch of the actuator is subject to uncertainty in the friction model used for actuation planning, particularly the free-sliding distance undergone by the workpiece after losing contact with the actuator. This paper first reviews an impact planning method, then augments it using a restitutionbased model that results in an explicit actuator …