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Semi-Autonomous Control Of Autonomous Underwater Vehicles, Stephen C. Martin

Link Foundation Ocean Engineering and Instrumentation Fellowship Reports

The goal of my graduate research is to address two engineering science problems whose solution will enable Autonomous Underwater Vehicles (AUVs) to routinely perform semi-autonomous missions presently considered impractical or infeasible. I am pursuing this research under the direction of Professor Whitcomb in the Dynamical Systems and Controls Laboratory at Johns Hopkins University, and in collaboration with the faculty of the Deep Submergence Laboratory of the Woods Hole Oceanographic Institution (WHOI).

In the last decade AUVs have begun to complement Human Occupied Vehicles (HOVs) and Remotely Operated Vehicles (ROVs) as effective platforms for oceanographic exploration. HOVs and ROVs are highly …

Salt And Ph Tunable Resist Patterns On Polyelectrolyte Multilayers, Christina Chan, Ilsoon Lee, Srivatsan Kidambi

Department of Chemical and Biomolecular Engineering: Faculty Publications

A method for selectively removing a resist material from the polycationic surface of a polyelectrolyte multilayer (PEM) ?lm, Without disturbing adhering interactions between the cationic ?lm surface and bound biomaterials such as cells, proteins, and nucleic acids. The resist material is one that that inhibits or prevents the further deposition of cells or other biomaterial; it thus masks the cationic surface from application of biomaterials. In one embodiment the resist material is a carboxy functional oxyalkylene oligomer. It is removed by exposing the ?lm containing the bound biomaterial and the bound resist material to a pH below 4.5, and/or to …

Cell Adhesion On Polyelectrolyte Multilayer Coated Polydimethylsiloxane Surfaces With Varying Topographies, Srivatsan Kidambi, Natasha Udpa, Stacey A. Schroeder, Robert Findlan, Ilsoon Lee, Christina Chan

Department of Chemical and Biomolecular Engineering: Faculty Publications

This article demonstrates that the micro-topography of the surface with respect to the pattern size and pitch influences cell adhesion and proliferation. Extensive research has shown the dependence of cell proliferation on substrate chemistry, but the influence of substrate topography on cell attachment has only recently been appreciated. To evaluate the effect of substrate physical properties (i.e., periodic microstructures) on cell attachment and morphology, we compared the response of several cell types (fibroblasts, HeLa, and primary hepatocytes) cultured on various polydimethylsiloxane (PDMS) patterns. PDMS has been used as an artificial construct to mimic biological structures. Although PDMS is widely used …

Corrosion Studies On The Uss Arizona With Application To A Japanese Midget Submarine, Brent M. Wilson, Donald L. Johnson, Hans Vantilburg, Matthew A. Russell, Larry E. Murphy, James D. Carr, Robert J. De Angelis, David L. Conlin

Department of Chemistry: Faculty Publications

The assessment of corrosion on the USS Arizona included the pioneering development of a minimum-impact cost-effective technique to determine the corrosion rate of steel-hulled shipwrecks in seawater. The technique, with potential application worldwide, is illustrated in this paper with the application to a World War II Japanese midget submarine submerged in deep waters off the Oahu, Hawaii, coast.

Integrative Lawyering: Navigating The Political Economy Of Urban Redevelopment Symposium: Race, Economic Justice, And Community Lawyering In The New Century, Sheila R. Foster

Faculty Scholarship

This shift from defending and reacting to creating and envisioning requires a more engaged organizational role for the lawyer. The lawyer is now expected to do more than translate the organization/community's grievance into discreet legal frameworks and discourse---e.g., a civil rights violation, a nuisance, participatory right, etc. The lawyer now intervenes in negotiations from which the organization or community has been excluded. This new role requires a shifting, flexible mix of skills and a more dynamic interaction with the organization and its varied functions-policy, community education, lobbying, and organizing. This new role is what we call "integrative lawyering," an emergent …

Functional Interplay Between The B-Box 2 And The B30.2(Spry) Domains Of Trim5Α, Xi Ling, Byeongwoon Song, Shi-Hua Xiang, Joseph Sodroski

Nebraska Center for Virology: Faculty Publications

The retroviral restriction factors, TRIM5α and TRIMCyp, consist of RING and B-box 2 domains separated by a coiled coil from carboxy-terminal domains. These carboxy-terminal domains (the B30.2(SPRY) domain in TRIM5α and the cyclophilin A domain in TRIMCyp) recognize the retroviral capsid. Here we show that some B-box 2 changes in TRIM5α, but not in TRIMCyp, resulted in decreased human immunodeficiency virus (HIV-1) capsid binding. The phenotypic effects of these B-box 2 changes on the restriction of retroviral infection depended on the potency of restriction and the affinity of the TRIM5α interaction with the viral capsid, two properties specified by the …

Passive Aerobic Treatment Of Net-Alkaline, Iron-Laden Drainage From A Flooded Underground Anthracite Mine, Pennsylvania, Usa, Charles A. Cravotta Iii

United States Geological Survey: Staff Publications

This report evaluates the results of a continuous 4.5-day laboratory aeration experiment and the first year of passive, aerobic treatment of abandoned mine drainage (AMD) from a typical flooded underground anthracite mine in eastern Pennsylvania, USA. During 1991–2006, the AMD source, locally known as the Otto Discharge, had flows from 20 to 270 L/s (median 92 L/s) and water quality that was consistently suboxic (median 0.9 mg/L O₂) and circumneutral (pH ~ 6.0; net alkalinity >10) with moderate concentrations of dissolved iron and manganese and low concentrations of dissolved aluminum (medians of 11, 2.2, and <0.2 mg/L, respectively). In 2001, the laboratory aeration experiment demonstrated rapid oxidation of ferrous iron (Fe²⁺) without …

Characterization Of Human Immunodeficiency Virus Type 1 Monomeric And Trimeric Gp120 Glycoproteins Stabilized In The Cd4-Bound State: Antigenicity, Biophysics, And Immunogenicity, Barna Dey, Marie Pancera, Krisha Svehla, Yuuei Shu, Shi-Hua Xiang, Jeffrey Vainshtein, Yuxing Li, Joseph Sodroski, Peter D. Kwong, John R. Mascola, Richard Wyatt

Nebraska Center for Virology: Faculty Publications

The human immunodeficiency virus type 1 exterior gp120 envelope glycoprotein is highly flexible, and this flexibility may contribute to the inability of monomeric gp120 immunogens to elicit broadly neutralizing antibodies. We previously showed that an S375W modification of a critical interfacial cavity central to the primary receptor binding site, the Phe43 cavity, stabilizes gp120 into the CD4-bound state. However, the immunological effects of this cavity-altering replacement were never tested. Subsequently, we screened other mutations that, along with the S375W alteration, might further stabilize the CD4-bound state. Here, we define a selected second cavity-altering replacement, T257S, and analyze the double mutations …

Latin Hypercube Approach To Estimate Uncertainty In Ground Water Vulnerability, Jason J. Gurdak, John E. Mccray, Geoffrey Thyne, Sharon L. Qi

United States Geological Survey: Staff Publications

A methodology is proposed to quantify prediction uncertainty associated with ground water vulnerability models that were developed through an approach that coupled multivariate logistic regression with a geographic information system (GIS). This method uses Latin hypercube sampling (LHS) to illustrate the propagation of input error and estimate uncertainty associated with the logistic regression predictions of ground water vulnerability. Central to the proposed method is the assumption that prediction uncertainty in ground water vulnerability models is a function of input error propagation from uncertainty in the estimated logistic regression model coefficients (model error) and the values of explanatory variables represented in …

Sexual Selection Drives Speciation In An Amazonian Frog, Kathryn E. Boul, W. Chris Funk, Catherine R. Darst, David C. Cannatella, Michael J. Ryan

United States Geological Survey: Staff Publications

One proposed mechanism of speciation is divergent sexual selection, whereby divergence in female preferences and male signals results in behavioural isolation. Despite the appeal of this hypothesis, evidence for it remains inconclusive. Here, we present several lines of evidence that sexual selection is driving behavioural isolation and speciation among populations of an Amazonian frog (Physalaemus petersi). First, sexual selection has promoted divergence in male mating calls and female preferences for calls between neighbouring populations, resulting in strong behavioural isolation. Second, phylogenetic analysis indicates that populations have become fixed for alternative call types several times throughout the species’ range, …

Population Viability Analysis Of Lower Missouri River Shovelnose Sturgeon With Initial Application To The Pallid Sturgeon, P. G. Bajer, M. L. Wildhaber

United States Geological Survey: Staff Publications

Demographic models for the shovelnose (Scaphirhynchus platorynchus) and pallid (S. albus) sturgeons in the Lower Missouri River were developed to conduct sensitivity analyses for both populations. Potential effects of increased fishing mortality on the shovelnose sturgeon were also evaluated. Populations of shovelnose and pallid sturgeon were most sensitive to age-0 mortality rates as well as mortality rates of juveniles and young adults. Overall, fecundity was a less sensitive parameter. However, increased fecundity effectively balanced higher mortality among sensitive age classes in both populations. Management that increases population-level fecundity and improves survival of age-0, juveniles, and young …

Biomonitoring Of Lead, Zinc, And Cadmium In Streams Draining Lead-Mining And Non-Mining Areas, Southeast Missouri, Usa, John M. Besser, William G. Brumbaugh, Thomas W. May, Christopher J. Schmitt

United States Geological Survey: Staff Publications

We evaluated exposure of aquatic biota to lead (Pb), zinc (Zn), and cadmium (Cd) in streams draining a Pb-mining district in southeast Missouri. Samples of plant biomass (detritus, periphyton, and filamentous algae), invertebrates (snails, crayfish, and riffle benthos), and two taxa of fish were collected from seven sites closest to mining areas (mining sites), four sites further downstream from mining (downstream sites), and eight reference sites in fall 2001. Samples of plant biomass from mining sites had highest metal concentrations, with means 10- to 60- times greater than those for reference sites. Mean metal concentrations in over 90% of samples …

Structure And Properties Of The San Andreas Fault In Central California: Recent Results From The Safod Experiment, Stephen Hickman, Mark D. Zoback, William Ellsworth, Naomi Boness, Peter Malin, Steven Roecker, Clifford Thurber

United States Geological Survey: Staff Publications

The San Andreas Fault Observatory at Depth (SAFOD) is a 3.2-km-deep borehole observatory drilled into the San Andreas fault zone at seismogenic depths to study directly the physical and chemical processes controlling faulting and earthquake generation.  SAFOD forms one component of EarthScope, a major Earth Science facility program of the U.S. National Science Foundation; the other two funded components are U.S. Array, a continental-scale seismic network, and the Plate Boundry Observatory, an extensive network of GOS receivers and strainmeters deployed acorss the western U.S. SAFOD is being conducted in collaboration with the U.S. Geological Survey and the International Continental Scientific …

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, August 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 2 JULY 2007 through 30 JULY 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, January 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 6 NOV 2006 through 27 NOV 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

Characterizing Stand- Replacing Harvest And Fire Disturbance Patches In A Forested Landscape: A Case Study From Cooney Ridge, Montana, Andrew T. Hudak, Penelope Morgan, Michael J. Bobbitt, Leigh B. Lentile

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

In this chapter, we present a case study intended to help crystallize for many readers, through use of an illustrative example, some of the important concepts developed in the preceding chapters. From an understanding of forest successional and disturbance processes, both natural and anthropogenic (Linke et al., Chapter 1, this volume), research questions were developed to compare and contrast the landscape patterns generated from fire and harvest disturbance. Remotely sense data are demonstrated as an appropriate source of relevant information (Coops et al., Chapter 2, this volume), enabling the applications presented for the utilization of change detection approaches for mapping …

Honors In Practice, Volume 3 (Complete Issue)

Honors in Practice Online Archive

CONTENTS Editorial Policy
Submission Guidelines
Dedication to William P. Mech
Editor’s Introduction Ada Long

INNOVATIVE HONORS COURSES
Learning a Practice Versus Learning to Be a Practitioner: Teaching Archaeology in an Honors Context Troy R. Lovata
Teaching Arts and Honors: Four Successful Syllabi P. Brent Register, Robert Bullington, and Joe A. Thomas
Service Learning in the Honors Composition Classroom: What Difference Does It Make? Ann T. Parker
First-Year “Initiation” Courses in Honors Jim Lacey
Teaching an Honors Course Tied to a Large University Event Anne M. Wilson, Tyler D. Blakley, Kathryn A. Leciejewski, Michelle L. Sams, and Susan A. Surber

HONORS …

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, February 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 1 JAN 2006 through 29 JAN 2006

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, June 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 7 MAY 2007 through 28 MAY 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, May 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 MAR 2007 through 26 MAR 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, March 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Missouri River Region Mountain Snowpack Report

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 5 FEB 2007 through 26 FEB 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006

Ft. Peck, MT

Garrison, ND

Oahe, SD

U.S. Army Corps Of Engineers Omaha District Monthly Drought Report, November 2007

United States Army Corps of Engineers, Omaha District

Current Conditions

Drought Outlook

Ft. Peck, Montana

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Garrison, North Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Boat Ramp Information

Noxious Weeds Overview

Cultural Resources Overview

Other Areas of Interest/Concern

Oahe, South Dakota

Reservoir Elevation Overview

Water Intake Overview

Access Overview

Noxious Weeds Overview

Cultural Resources Overview

Mainstem Reservoir Information, Weekly Elevation Comparison 3 SEPT 2007 through 24 SEPT 2007

Mainstem Reservoir Storage Comparison Water Years 2004, 2005, 2006, 2007

Ft. Peck, MT

Garrison, ND

Oahe, SD

Microbial Sulfate Reduction And Metal Attenuation In Ph 4 Acid Mine Water, Clinton D. Church, Richard T. Wilkin, Charles N. Alpers, Robert O. Rye, R. Blaine Mccleskey

United States Geological Survey: Staff Publications

Sediments recovered from the flooded mine workings of the Penn Mine, a Cu-Zn mine abandoned since the early 1960s, were cultured for anaerobic bacteria over a range of pH (4.0 to 7.5). The molecular biology of sediments and cultures was studied to determine whether sulfate-reducing bacteria (SRB) were active in moderately acidic conditions present in the underground mine workings. Here we document multiple, independent analyses and show evidence that sulfate reduction and associated metal attenuation are occurring in the pH-4 mine environment. Waterchemistry analyses of the mine water reveal: (1) preferential complexation and precipitation by H₂S of Cu …

How Will Global Climate Change Affect Parasite-Host Assemblages?, Eric P. Hoberg, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Parasites are integral components of the biosphere. Host switching correlated with events of episodic climate change is ubiquitous in evolutionary and ecological time. Global climate change produces ecological perturbations, which cause geographical and phenological shifts, and alteration in the dynamics of parasite transmission, increasing the potential for host switching. The intersection of climate change with evolutionary conservative aspects of host specificity and transmission dynamics, called ecological fitting, permits emergence of parasites and diseases without evolutionary changes in their capacity for host utilization.

New Faculty Orientation Welcome, John Owens

John Owens: Speeches and Appearances

It is a true pleasure to join Chancellor Perlman and Senior Vice Chancellor of Academic Affairs Couture in welcoming you to the University of Nebraska-Lincoln.

Casnr Salute To Graduates, John Owens

John Owens: Speeches and Appearances

We appreciate your being with us this afternoon as we celebrate the accomplishments of tomorrow's graduates from the University of Nebraska-Lincoln. Thank you for attending, and congratulations to the new alumni! This ceremony is rapidly Becoming both a fixture and a tradition in the College of Agricultural Sciences and Natural Resources. As a matter of fact, it took the national "First Place Award" in a competition last year that was open to all the universities in the United States.

Lead Presentation: The Game, John Owens

John Owens: Speeches and Appearances

Good afternoon, everyone. The deans of the Institute of Agriculture and Natural Resources and I are pleased to be here with you today. We welcome you to IANR Shout It Out, the Institute of Agriculture and Natural Resources game that allows you to test your IANR and Nebraska knowledge, learn exciting new facts, and win prizes! Good luck to you all!

Panhandle Research And Extension Center Feedlot Dedication Ceremony, John Owens

John Owens: Speeches and Appearances

It is my very great privilege and pleasure to have this opportunity to welcome you to today's dedication. We look forward with great anticipation to the exciting, important research to enhance cattle feeding profitability this feedlot will provide. Approximately 34 percent of Panhandle agriculture's economic impact - about $350 million yearly - comes from cattle finishing.

Nebraska Bankers Scholarship Recognition Dinner, John Owens

John Owens: Speeches and Appearances

Good evening. It is indeed a pleasure to be part of this very first Nebraska Bankers Scholarship Recognition Dinner. My heartiest congratulations to each of our 20 student recipients of the 2007-2008 Nebraska-Bankers Scholarship Program. I know I speak for everyone in this room when I say we look forward with great enthusiasm to the great work you will do, after you graduation, to the important contributions you will make in your chosen field and the communities you will serve over your careers.

The Search Interest In Contract, Joshua Fairfield

Articles by Maurer Faculty

Parties often do not negotiate for contract terms. Instead, parties search for the products, terms, and contractual counterparties they desire. The traditional negotiation-centered view of contract leads courts to try to determine the meaning of the parties where no meaning was negotiated and to waste time determining the benefits of bargains that were never struck. Further, while courts have ample tools to validate specifically negotiated contract terms, they lack the tools to respond to searched-for terms. Although the law and literature have long recognized that there is a disconnect between the legal fictions of negotiation and the reality of contracting …