Index Catalog // ScholarsArchive@OSU

Click data as implicit feedback in web search

Creator:: Jung, Seikyung, Herlocker, Jonathan L., and Webster, Janet G.
Abstract:: Search sessions consist of a person presenting a query to a search engine, followed by that person examining the search results, selecting some of those search results for further review, possibly following some series of hyperlinks, and perhaps backtracking to previously viewed pages in the session. The series of pages...
Resource Type:: Article
Full Text:: search Seikyung Jung a,*, Jonathan L. Herlocker a, Janet Webster b a School of Electrical Engineering

Collaborative Filtering: A New Approach to Searching Digital Libraries

Creator:: Webster, Janet G., Jung, Seikyung, and Herlocker, Jonathan L.
Abstract:: At Oregon State University (OSU), the School of Electrical Engineering and Computer Science (EECS) and the OSU Libraries are working together on a project to improve the effectiveness and accessibility of digital information created and collected by academic libraries. This project focuses on making digital resources more accessible through an...
Resource Type:: Article
Full Text:: APPROACH TO SEARCHING DIGITAL LIBRARIES Janet Webster, Seikyung Jung and Jon Herlocker At Oregon State

SERF: integrating human recommendations with search

Creator:: Jung, Seikyung, Harris, Kevin, Webster, Janet G., and Herlocker, Jonathan L.
Abstract:: Today's university library has many digitally accessible resources, both indexes to content and considerable original content. Using off-the-shelf search technology provides a single point of access into library resources, but we have found that such full-text indexing technology is not entirely satisfactory for library searching. In response to this, we...
Resource Type:: Conference Proceeding
Full Text:: Recommendations with Search Seikyung Jung1, Kevin Harris1, Janet Webster2 and Jonathan L. Herlocker1

Collaborative filtering: possibilities for libraries

Creator:: Webster, Janet G., Herlocker, Jonathan L., Pennington-Lehman, Heather, and Jung, Seikyung
Abstract:: As librarians, we recognize that users seldom approach a research project with a clear search strategy and thus we develop means to help them clarify their research objectives. However, our traditional methods do not translate well to the web environment, while at the same time demand for web access increases....
Resource Type:: Conference Proceeding

Challenges and solutions for synthesis of knowledge regarding collaborative filtering algorithms

Creator:: Lowd, Daniel, Godde, Olivier, McLaughlin, Matthew, Nong, Shuzhen, Wang, Yun, and Herlocker, Jonathan L.
Abstract:: Collaborative filtering (CF)-based recommender systems predict what items a user will like or find useful based on the recommendations (active or implicit) of other members of a networked community. In spite of more than ten years of research, there is little consensus on state-of-the-art knowledge regarding CF predictive algorithms. There...
Resource Type:: Research Paper
Full Text:: ‡, Matthew McLaughlin, Shuzhen Nong, Yun Wang, and Jonathan L. Herlocker. School of Electrical

Collaborative filtering for digital libraries

Creator:: Oregon State University. Dept. of Computer Science, Herlocker, Jonathan Lee, Jung, Seikyung, and Webster, Janet G.
Abstract:: Can collaborative filtering be successfully applied to digital libraries in a manner that improves the effectiveness of the library? Collaborative filtering systems remove the limitation of traditional content-based search interfaces by using individuals to evaluate and recommend information. We introduce an approach where a digital library user specifies their need...
Resource Type:: Research Paper
Full Text:: , (pp. 43-52). 6. Dahlen, B. J., Konstan, J. A., Herlocker, J. L., Good, N., Borchers, A., Riedl, J

LibraryFind: System design and usability testing of academic metasearch system

Creator:: Jung, Seikyung, Webster, Janet, Mellinger, Margaret, Frumkin, Jeremy, and Herlocker, Jon L.
Abstract:: Using off-the-shelf search technology provides a single point of access into library resources, but we found that such commercial systems are not entirely satisfactory for the academic library setting. In response to this, Oregon State University (OSU) Libraries designed and deployed LibraryFind, a metasearch system. We conducted a usability experiment...
Resource Type:: Article
Full Text:: Jung*, Janet Webster**, Margaret Mellinger**, Jeremy Frumkin**, and Jonathan L. Herlocker

Browsing for information on the web and in the file system

Creator:: Seifert, Ethan, Stumpf, Simone, Herlocker, Jonathan Lee, Wynn, Eleanor H., and Oregon State University. Department of Computer Science
Abstract:: Browsing is one of the methods used for finding and refinding information on the web or in the file local system and there are opportunities to avoid this, particularly if that information is revisited frequently. We present empirical results from a field study contrasting patterns of browsing to local and...
Resource Type:: Technical Report
Full Text:: information on the web and in the file system Ethan Seifert, Simone Stumpf, Jonathan Herlocker EECS

Toward harnessing user feedback for machine learning

Creator:: Stumpf, Simone, Rajaram, Vidya, Li, Lida, Burnett, Margaret, 1949-, Dietterich, Thomas Glen, Sullivan, Erin, Drummond, Russell, and Herlocker, Jonathan Lee
Abstract:: There has been little research into how end users might be able to communicate advice to machine learning systems. If this resource--the users themselves--could somehow work hand-in-hand with machine learning systems, the accuracy of learning systems could be improved and the users' understanding and trust of the system could improve...
Resource Type:: Technical Report
Full Text:: Drummond, Jonathan Herlocker Oregon State University School of Electrical Engineering and Computer

Recovery from interruptions : knowledge workers' strategies, failures and envisioned solutions

Creator:: Oregon State University. Dept. of Computer Science, Stumpf, Simone, Burnett, Margaret, 1949-, Dietterich, Thomas Glen, Johnsrude, Kevin, and Herlocker, Jonathan Lee
Abstract:: This paper presents qualitative results from interviews with knowledge workers about their recovery strategies after interruptions. Special focus is given to when these strategies fail due to the nature of the interruption and existing computer support. Potential solutions offered by participants to overcome some of these problems are presented. These...
Resource Type:: Research Paper
Full Text:: , Jonathan Herlocker Oregon State University Corvallis, OR {stumpf, burnett, tgd, johnsrud, herlock

Supporting knowledge workers in practice : how do they understand and use work units?

Creator:: Oregon State University. Dept. of Computer Science, Stumpf, Simone, Burnett, Margaret, 1949-, Rajaram, Vidya, and Herlocker, Jonathan Lee
Abstract:: If basic assumptions about how knowledge workers conceptualize and use work units are wrong, then any solutions resting on those assumptions are unlikely to be successful since, instead of decreasing costs, they will lead to increasing them. This paper reports on how knowledge workers understand, use and switch between units...
Resource Type:: Research Paper
Full Text:: ., Johnsrude, K., McLaughlin, M., Li, L., Herlocker, J.L [2005], TaskTracer: A desktop environment to support

Getting to the information you already have

Creator:: Rajaram, Vidya, Stumpf, Simone, Burnett, Margaret, 1949-, Dragunov, Anton, Wick, Evelyn, Lynn, Juliana, Johnsrude, Kevin, Herlocker, Jonathan Lee, and Oregon State University. Department of Computer Science
Abstract:: Knowledge workers need to find information but even when it is stored on their local computer systems, finding it can be costly. There are many researchers working on solutions to reduce these costs, but there has been little research into exactly what these costs are, and what the ties are...
Resource Type:: Research Paper
Full Text:: Johnsrude, Jonathan Herlocker Oregon State University Corvallis, Oregon 97331 {rajaramv,stumpf,burnett

Interacting meaningfully with machine learning systems : three experiments

Creator:: Oregon State University. Dept. of Computer Science, Stumpf, Simone, Rajaram, Vidya, Li, Lida, Wong, Weng-Keen, Burnett, Margaret, 1949-, Dietterich, Thomas Glen, Sullivan, Erin, and Herlocker, Jonathan Lee
Abstract:: Although machine learning is becoming commonly used in today's software, there has been little research into how end users might interact with machine learning systems, beyond communicating simple "right/wrong" judgments. If the users themselves could somehow work hand-in-hand with machine learning systems, the accuracy of learning systems could be improved...
Resource Type:: Research Paper
Full Text:: , Lida Li, Weng-Keen Wong, Margaret Burnett, Thomas Dietterich, Erin Sullivan, Jonathan Herlocker

Collaborative Filtering for Digital Libraries

Creator:: Herlocker, Jon, Jung, Seikyung, and Webster, Janet G.
Abstract:: Report written in support of a presentation at JCDL 2002.
Resource Type:: Technical Report
Full Text:: , (pp. 43-52). 6. Dahlen, B. J., Konstan, J. A., Herlocker, J. L., Good, N., Borchers, A., Riedl, J

Oregon Stream Gaging Network Evaluation: Meeting the Oregon Water Resources Department’s Current and Future Data Needs

Creator:: La Marche, Jonathan L.
Abstract:: Oregon’s stream gaging network was last evaluated in 1970 by the U.S. Geological Survey. Water management and scientific-related needs have changed significantly since 1970, including the recognition of instream water rights and implications of climate change on water resources. The Oregon Water Resources Department (OWRD) has recently undertaken an evaluation...
Resource Type:: Presentation
Full Text:: Slide 1 OWRD Stream Gaging Network Evaluation Jonathan La

HornungJonathanP2011.pdf

Creator:: Hornung, Jonathan P.
Abstract:: Deep-sea bamboo coral (Isidella sp.) SE000901A from the southern Oregon coast (water depth 1048m) provides a high-resolution record of variability of North Pacific Intermediate Water (NPIW) and carbon rain to the sea floor, related to coastal upwelling, from 1808 to 2000AD. Counting of annual layers in magnesium to calcium (Mg/Ca)...
Full Text:: #%,CCCQCB!#96/L#23:#=/723:60# )6:8/0#>/1=2#NR12:6#;:@23#BCSTLO#@6/P?;:=#1#3?83K6:=/F72?/0#6:>/6;#/9# P16

China Squeeze: What Happens When Your Biggest Customer Says No?

Creator:: King, Jonathan
Abstract:: Over the last decade direct exports to China and Hong Kong of Pacific Geoduck have grown to encompass more than 80 percent of U.S. geoduck production. In December 2013 China shut its doors to U.S. geoduck over possible arsenic contamination and imports from the U.S. fell from over 250 MT...
Resource Type:: Presentation
Full Text:: . China Squeeze: What Happens When Your Largest Customer Says “No!” May 21, 2015 Jonathan King

Balancing goods and bads: A Bayesian analysis of fishery regulatory decisions

Creator:: Sweeney, Jonathan
Abstract:: This paper examines the regulatory decision problem facing fishery managers tasked with balancing desirable fish catch with undesirable bycatch. I approach the problem using Bayesian decision analysis. I first estimate a model of production, accounting for the fishery’s joint production of desirable and undesirable outputs. I then use the estimated...
Resource Type:: Presentation
Full Text:: analysis of fishery regulatory decisions Jonathan Sweeney UC-Santa Cruz NOAA-SWFSC Why do we

The Marine Stewardship Council Fisheries Certification Program: Progress and Challenges

Creator:: Peacey, Jonathan
Abstract:: Fish is an increasingly popular source of protein and lifestyle food choice. High demand for fish and inadequate management of many fisheries has resulted in sub-optimum production and economic and environmental performance. Initiatives to address these problems include regional and international fisheries agreements, NGO-campaigns and industry-led management innovations. The Marine...
Resource Type:: Conference Proceeding
Full Text:: Program: Progress and Challenges Jonathan Peacey Marine Stewardship Council 119 Altenburg Gardens

Species Management Guide for Triteleia hendersonii var. leachiae

Creator:: Titus, Jonathan
Abstract:: Blue-striped Brodiaea or Leach's Brodiaea (Triteleia hendersonii Greene var. leachiae [Peck] Hoover, or Brodiaea hendersonii Wats. var. leachiae ) Lily Family (Liliaceae) is found in the foothills of the Siskiyou Mountains of Curry, Coos and Josephine Counties of southwestern Oregon. It is occurs in a variety of habitats including meadow...
Resource Type:: Technical Report
Full Text:: AND BIBLIOGRAPHY Abrams, L. 1940. Illustrated flora of the Pacific States. Washington. Oregon, and

Race, IQ, and the Search for Statistical Signals Associated with So-Called “X”-Factors: Environments, Racism, and the “Hereditarian Hypothesis”

Creator:: Kaplan, Jonathan Michael
Abstract:: Some authors defending the "hereditarian" hypothesis with respect to differences in average IQ scores between populations have argued that the sorts of environmental variation hypothesized by some researchers rejecting the hereditarian position should leave discoverable statistical traces, namely changes in the overall variance of scores or in variance-covariance relating scores...
Resource Type:: Article
Full Text:: Author: Jonathan Michael Kaplan Title: Race, IQ, and the Search for Statistical Signals Associated with

Can Investments in Social Capital Improve Well-Being in Fishing Communities? A Theoretical Perspective for Assessing the Policy Options

Creator:: Isham, Jonathan
Abstract:: Over the last decade, advocates of the interdisciplinary concept of social capital have celebrated the fact that elements of local social structures--embodied in social norms, networks and organizations--can significantly affect well-being in fishing communities. But does this concept bring anything to the study and practice of fisheries management that is...
Resource Type:: Research Paper
Full Text:: Assessing the Policy Options Jonathan Isham Department of Economics and Program in Environmental

Reproductive phase locking of mosquito populations in response to rainfall frequency

Creator:: Shaman, Jeffrey and Day, Jonathan F.
Abstract:: The frequency of moderate to heavy rainfall events is projected to change in response to global warming. Here we show that these hydrologic changes may have a profound effect on mosquito population dynamics and rates of mosquito-borne disease transmission. We develop a simple model, which treats the mosquito reproductive cycle...
Resource Type:: Article
Full Text:: Populations in Response to Rainfall Frequency Jeffrey Shaman1*, Jonathan F. Day2 1 College of Oceanic and

Individual transferable quotas in New Zealand tuna fisheries

Creator:: Peacey, Jonathan and Sinner, Jim
Abstract:: New Zealand’s $25M (USD) domestic tuna fishery comprises a troll fishery for albacore, a longline fishery for southern bluefin, Pacific bluefin, bigeye, yellowfin, and albacore tunas, and a small purse seine fishery for skipjack tuna. New Zealand vessels also fish for tuna in high seas areas and, through arrangements with...
Resource Type:: Research Paper
Full Text:: INDIVIDUAL TRANSFERABLE QUOTAS IN NEW ZEALAND TUNA FISHERIES Jonathan Peacey, New Zealand Ministry of

Metagenomic profiling : microarray analysis of an environmental genomic library

Creator:: Sebat, Jonathan L., Colwell, Frederick, and Crawford, Ronald L.
Abstract:: Genomic libraries derived from environmental DNA (metagenomic libraries) are useful for characterizing uncultured microorganisms. However, conventional library-screening techniques permit characterization of relatively few environmental clones. Here we describe a novel approach for characterization of a metagenomic library by hybridizing the library with DNA from a set of groundwater isolates, reference...
Resource Type:: Article
Full Text:: Environmental Genomic Library Jonathan L. Sebat,1† Frederick S. Colwell,2 and Ronald L. Crawford1

Vegetation Response to Western Juniper Slash Treatments

Creator:: O’Connor, Casey, Miller, Rick, and Bates, Jonathan D.
Abstract:: The expansion of pion-juniper woodlands the past 100 years in the western United States has resulted in large scale efforts to kill trees and recover sagebrush steppe rangelands. It is important to evaluate vegetation recovery following woodland control to develop best management practices. In this study, we compared two fuel...
Resource Type:: Article
Full Text:: Slash Treatments Casey O’Connor • Rick Miller • Jonathan D. Bates Received: 26 July 2012 / Accepted: 2

Restoration of Riparian Areas Following the Removal of Cattle in the Northwestern Great Basin

Creator:: Batchelor, Jonathan L., Ripple, William J., Wilson, Todd M., and Painter, Luke E.
Abstract:: We assessed the effects of the elimination of livestock in riparian systems at Hart Mountain National Antelope Refuge in southeastern Oregon, 23 years after the removal of cattle grazing, using 64 photos taken before grazing was removed compared with later retake photos. Two methods were used for this assessment: (1)...
Resource Type:: Article
Full Text:: Following the Removal of Cattle in the Northwestern Great Basin Jonathan L. Batchelor • William J. Ripple

Hydrologic Monitoring and Trends in the Upper Klamath Basin over the Last Decade

Creator:: La Marche, Jonathan L., Gates, Edward B., and Lite Jr., Kenneth E.
Abstract:: Over the last decade hydrologic monitoring efforts in the Upper Klamath Basin (UKB) of Oregon have increased in response to the continued strain on surface water and groundwater to meet competing biological and agricultural demands. The Oregon Water Resources Department (OWRD) increased its stream gaging network from three to ten...
Resource Type:: Presentation
Full Text:: Klamath Basin over the last decade Jonathan La Marche, Hydrologist PE Edward Gates, Hydrogeologist

Distribution of Potato virus Y Strains in Tubers during the Post-Harvest Period

Creator:: Whitworth, Jonathan L., Hamm, Philip B., and Nolte, Phillip
Abstract:: Russet Burbank, Russet Norkotah, and Shepody tubers infected with Potato virus Y strains (PVYO, PVYN:O, PVYNTN) were tested from storage at 4A degrees C at the initiation of sprouting and then the same tubers were tested again from storage at 4A degrees C seventy eight days later. Samples were taken...
Resource Type:: Article
Full Text:: Post-Harvest Period Jonathan L. Whitworth & Philip B. Hamm & Phillip Nolte Published online: 21

A Coupled Model for Laplace’s Tidal Equations in a Fluid with One Horizontal Dimension and Variable Depth

Creator:: Kelly, Samuel M., Jones, Nichole L., and Nash, Jonathan D.
Abstract:: Abstract: Tide-topography interactions dominate the transfer of tidal energy from large to small scales. At present, it is poorly understood how low-mode internal tides reflect and scatter along the continental margins. Here, the coupling equations for linear tides model (CELT) are derived to determine the independent modal solutions to Laplace's...
Resource Type:: Article
Full Text:: Equations in a Fluid with One Horizontal Dimension and Variable Depth SAMUEL M. KELLY AND NICOLE L. JONES

Estimating Salinity Variance Dissipation Rate from Conductivity Microstructure Measurements

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: At the smallest length scales, conductivity measurements include a contribution from salinity fluctuations in the inertial–convective and viscous–diffusive ranges of the turbulent scalar variance spectrum. Interpreting these measurements is complicated because conductivity is a compound quantity of both temperature and salinity. Accurate estimates of the dissipation rate of salinity variance...
Resource Type:: Article
Full Text:: Microstructure Measurements JONATHAN D. NASH AND JAMES N. MOUM College of Oceanic and Atmospheric Sciences

Microstructure estimates of turbulent salinity flux and the dissipation spectrum of salinity

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: Direct determination of the irreversible turbulent flux of salinity in the ocean has not been possible because of the complexity of measuring salinity on the smallest scales over which it mixes. Presented is an analysis of turbulent salinity microstructure from measurements using a combined fast-conductivity/temperature probe on a slowly falling...
Resource Type:: Article
Full Text:: phoc_32_903.2312_2333.tp 2312 VOLUME 32J O U R N A L O F P H Y S I C A

An advanced modeling system for optimization of wind farm layout and wind turbine sizing using a multi-level extended pattern search algorithm

Creator:: DuPont, Bryony, Cagan, Jonathan, and Moriarty, Patrick
Abstract:: This paper presents a system of modeling advances that can be applied in the computational optimization of wind plants. These modeling advances include accurate cost and power modeling, partial wake interaction, and the effects of varying atmospheric stability. To validate the use of this advanced modeling system, it is employed...
Resource Type:: Article
Full Text:: turbine sizing using a multi-level extended pattern search algorithm Bryony DuPont a, *, Jonathan Cagan b

Microwave Extraction of Essential Oil from Peppermint - Field Trial

Creator:: Hackleman, David, Smith, Connor J., and Lebsack, Jonathan
Abstract:: An in-field test of the solvent free microwave extraction of peppermint oil was held in mid-August 2009 at Butler Valley Farms in Stayton, Oregon. Results of the trial were limited due to rapid coalescence of the mint oil prior to entry into the separator. This resulted in no mint oil...
Resource Type:: Presentation
Full Text:: Trial David Hackleman, Connor J. Smith and Jonathan Lebsack Oregon State University, Corvallis

Internal hydraulic flows on the continental shelf: High drag states over a small bank

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: Observations of currents, hydrography, and turbulence provide unambiguous evidence for hydraulic control of flow over an isolated three-dimensional topographic feature on Oregon’s continental shelf. The flow becomes critical at the crest of the bank, forming a strong supercritical downslope flow in the lower layer. Farther downstream, internal hydraulic jumps form...
Resource Type:: Article
Full Text:: Jonathan D. Nash • and James N. Moum College of Oceanic and Atmospheric Sciences, Oregon State University

Season and prey type influence size dependency of predator−prey body mass ratios in a marine fish assemblage

Creator:: Reum, Jonathan C. P. and Hunsicker, Mary E.
Abstract:: Marine and freshwater food webs are strongly structured by size-dependent predator−prey interactions. Predator−prey body mass ratios (PPMR) are important parameters in size-based food-web models, but studies evaluating the temporal stability of PPMR or its relationship to predator feeding modes are scant. Using a large data set of predator−prey pairs from...
Resource Type:: Article
Full Text:: assemblage Jonathan C. P. Reum1,3,*, Mary E. Hunsicker2 1School of Aquatic and Fishery Sciences, University

Realism, Antirealism, and Conventionalism about Race

Creator:: Kaplan, Jonathan Michael and Winther, Rasmus Grønfeldt
Abstract:: This paper distinguishes three concepts of “race”: bio-genomic cluster/race, biological race, and social race. We map out realism, antirealism, and conventionalism about each of these, in three important historical episodes: Frank Livingstone and Theodosius Dobzhansky in 1962, A.W.F. Edwards’ 2003 response to Lewontin (1972), and contemporary discourse. Semantics is especially...
Resource Type:: Article
Full Text:: for political positions and a post-racial future. Authors: Jonathan Michael Kaplan (Oregon State

On the Consequences of Living without Facial Expression

Creator:: Bogart, Kathleen R., Cole, Jonathan, and Briegel, Wolfgang
Abstract:: Although the importance of the face in communication is well-known, there has been little discussion of the ramifications for those who lack facial expression: individuals with facial paralysis such as Bell’s palsy and Möbius syndrome, and facial movement disorders like Parkinson’s disease. By examining the challenges experienced by these individuals,...
Resource Type:: Preprint and Part of Book
Full Text:: expression Kathleen R. Bogart, Oregon State University Corvallis, OR, USA Jonathan Cole, Bournemouth and

Structure and dynamics of the Columbia River tidal plume front

Creator:: Kilcher, Levi F. and Nash, Jonathan D.
Abstract:: Time‐dependent buoyant plumes form at the outflow of tidally dominated estuaries. When estuary discharge velocity exceeds plume internal wave speed c, a sharp front forms at the plume’s leading edge that expands from the time‐dependent source. Using observations of the Columbia River tidal plume from multiple tidal cycles we characterize...
Resource Type:: Article
Full Text:: dynamics of the Columbia River tidal plume front Levi F. Kilcher1 and Jonathan D. Nash1 Received 21

Lack of association of ABCB4 insertion mutation with gallbladder mucoceles in dogs

Creator:: Cullen, John M., Willson, Cynthia J., Minch, Jonathan D., Kimbrough, Carie L., and Mealey, Katrina L.
Abstract:: The etiology of canine gallbladder mucocele (GBM) has not yet been identified. However, several studies have linked GBM in dogs to particular breeds (Shetland Sheepdogs are commonly implicated), concurrent endocrine disease (hyperadrenocorticism and/or hypothyroidism), and a mutation in the canine ABCB4 gene (ABCB4 1583_1584G), particularly in Shetland Sheepdogs. The current...
Resource Type:: Article
Full Text:: , Jonathan D. Minch, Carie L. Kimbrough, Katrina L. Mealey1 Abstract. The etiology of canine gallbladder

The Unpredictable Nature of Internal Tides on Continental Shelves

Creator:: Nash, Jonathan D., Kelly, Samuel M., Shroyer, Emily L., Moum, James N., and Duda, Timothy F.
Abstract:: Packets of nonlinear internal waves (NLIWs) in a small area of the Mid-Atlantic Bight were 10 times more energetic during a local neap tide than during the preceding spring tide. This counterintuitive result cannot be explained if the waves are generated near the shelf break by the local barotropic tide...
Resource Type:: Article
Full Text:: on Continental Shelves JONATHAN D. NASH College of Earth, Ocean and Atmospheric Sciences, Oregon

Intra‐ and inter‐annual variation in gray whale body condition on a foraging ground

Creator:: Soledade Lemos, Leila, Burnett, Jonathan D., Chandler, Todd E., Sumich, James L., and Torres, Leigh G.
Abstract:: Baleen whales store energy gained on foraging grounds to support reproduction and other metabolic needs while fasting for long periods during migration. Whale body condition can be used to monitor foraging success, and thus better understand and anticipate individual‐ and population‐level trends in reproduction and survival. We assessed the body...
Resource Type:: Article
Full Text:: foraging ground LEILA SOLEDADE LEMOS ,1,� JONATHAN D. BURNETT ,2 TODD E. CHANDLER,1 JAMES L. SUMICH ,3

Forest Fire Impacts on Carbon Uptake, Storage, and Emission: The Role of Burn Severity in the Eastern Cascades, Oregon

Creator:: Meigs, Garrett W., Donato, Daniel C., Campbell, John L., Martin, Jonathan G., and Law, Beverly E.
Abstract:: This study quantifies the short-term effects of low-, moderate-, and high-severity fire on carbon pools and fluxes in the Eastern Cascades of Oregon. We surveyed 64 forest stands across four fires that burned 41,000 ha (35%) of the Metolius Watershed in 2002 and 2003, stratifying the landscape by burn severity...
Resource Type:: Article
Full Text:: L. Campbell,1 Jonathan G. Martin,1 and Beverly E. Law1 1Department of Forest Ecosystems and Society

Subsurface drainage : an erosion control practice for western Oregon?

Creator:: Istok, Jonathan D., Boersma, L., Kling, G. F., and Oregon State University. Agricultural Experiment Station
Abstract:: Published February 1985. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: SUBSURFACE DRAINAGE: AN EROSION CONTROL PRACTICE FOR WESTERN OREGON? J. D. Istok L. Boersma G. F. Kling

Mowing Wyoming Big Sagebrush Communities With Degraded Herbaceous Understories: Has a Threshold Been Crossed?

Creator:: Davies, Kirk W., Bates, Jonathan D., and Nafus, Aleta M.
Abstract:: Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis [Beetle & A. Young] S.L. Welsh) plant communities with degraded native herbaceous understories occupy vast expanses of the western United States. Restoring the native herbaceous understory in these communities is needed to provide higher-quality wildlife habitat, decrease the risk of exotic plant invasion,...
Resource Type:: Article
Full Text:: a Threshold Been Crossed? Kirk W. Davies,1 Jonathan D. Bates,1 and Aleta M. Nafus2 Authors are

Nocturnal subcanopy flow regimes and missing carbon dioxide

Creator:: Vickers, Dean, Irvine, James, Martin, Jonathan G., and Law, Beverly E.
Abstract:: Two distinct nocturnal subcanopy flow regimes are observed beneath a tall (16 m) open pine forest canopy. The first is characterized by weaker mixing, stronger stability, westerly downslope flow decoupled from the flow above the canopy and much smaller than expected ecosystem respiration from the eddy flux plus storage measurements...
Resource Type:: Article
Full Text:: , OR,3 U.S.A.4 James Irvine, Jonathan G. Martin and Beverly E. Law5 College of Forestry, Oregon

Structure of the Baroclinic Tide Generated at Kaena Ridge, Hawaii

Creator:: Nash, Jonathan D., Kunze, Eric, Lee, Craig M., and Sanford, Thomas B.
Abstract:: Repeat transects of full-depth density and velocity are used to quantify generation and radiation of the semidiurnal internal tide from Kaena Ridge, Hawaii. A 20-km-long transect was sampled every 3 h using expendable current profilers and the absolute velocity profiler. Phase and amplitude of the baroclinic velocity, pressure, and vertical...
Resource Type:: Article
Full Text:: JONATHAN D. NASH College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon

How to Measure Economic Impacts with Multiple Interacting Policies?

Creator:: Sweeney, Jonathan, Howitt, Richard, Chan, HingLing, Pan, Minling, and Leung, PingSun
Abstract:: We present a positive mathematical programming model (PMP) for Hawaii's longline fishing fleet with the aim of examining the outcome of specific fishery policies. This model expands an earlier model which developed a generalized adaptation of the PMP framework to study fisheries. The current model provides managers with a realistic...
Resource Type:: Presentation
Full Text:: multiple interacting policies? JONATHAN R SWEENEY UNIVERSITY OF HAWAI I AT MANOA JULY 14, 2016

Internal Tide Reflection and Turbulent Mixing on the Continental Slope

Creator:: Nash, Jonathan D., Kunze, Eric, Toole, John M., and Schmitt, Ray W.
Abstract:: Observations of turbulence, internal waves, and subinertial flow were made over a steep, corrugated continental slope off Virginia during May–June 1998. At semidiurnal frequencies, a convergence of low-mode, onshore energy flux is approximately balanced by a divergence of high-wavenumber offshore energy flux. This conversion occurs in a region where the...
Resource Type:: Article
Full Text:: phoc_34_505.1117_1134.tp MAY 2004 1117N A S H E T A L . q 2004

Hotspots of deep ocean mixing on the Oregon continental slope

Creator:: Nash, Jonathan, Alford, M. H., Kunze, E., Martini, K., and Kelly, S.
Abstract:: Two deep ocean hotspots of turbulent mixing were found over the Oregon continental slope. Thorpe-scale analyses indicate time-averaged turbulent energy dissipation rates of ε > 10⁻⁷ W/kg and eddy diffusivities of Kp ~ 10⁻² m²/s at both hotspots. However, the structure of turbulence and its generation mechanism at each site...
Resource Type:: Article
Full Text:: types are indicated above Figure 2c; M-, L- and X- respectively represent timeseries averages from

A Thermocouple Probe for High-Speed Temperature Measurement in the Ocean

Creator:: Nash, Jonathan D., Caldwell, Douglas R., Zelman, Michael J., and Moum, James N.
Abstract:: A fast-response chromel–constantan thermocouple sensor was constructed for use on the microstructure profiler Chameleon and used for 60 ocean profiles off the coast of Oregon. The stability of the thermocouple was compared to that of an FP07 microbead thermistor, and its frequency response was compared to a high-resolution microconductivity probe....
Resource Type:: Article
Full Text:: atot_16_1119.1474_1482 1474 VOLUME 16J O U R N A L O F A T M O S P

Estimating Internal Wave Energy Fluxes in the Ocean

Creator:: Nash, Jonathan D., Alford, Matthew H., and Kunze, Eric
Abstract:: Energy flux is a fundamental quantity for understanding internal wave generation, propagation, and dissipation. In this paper, the estimation of internal wave energy fluxes <u′p′> from ocean observations that may be sparse in either time or depth are considered. Sampling must be sufficient in depth to allow for the estimation...
Resource Type:: Article
Full Text:: Estimating Internal Wave Energy Fluxes in the Ocean JONATHAN D

Exciting Engineered Passive Dynamics in a Bipedal Robot

Creator:: Renjewski, Daniel, Spröwitz, Alexander, Peekema, Andrew, Jones, Mikhail, and Hurst, Jonathan
Abstract:: Dynamic bipedal robots, which are capable of versatile behaviour, are rare. Most bipedal robots are either versatile and static or dynamic and limited to specific gaits. Over the last twenty years the bio-inspired spring mass model became a versatile template for bipedal walking and running gaits with many studies motivated...
Resource Type:: Article
Full Text:: Daniel Renjewski∗, Alexander Spröwitz, and Jonathan Hurst Dynamic bipedal robots, which are capable of

DeacyKodiakBrownBears.pdf

Creator:: Deacy, William, Leacock, William, Armstrong, Jonathan B., and Stanford, Jack A.
Abstract:: A key constraint faced by consumers is achieving a positive energy balance in the face of temporal variation in foraging opportunities. Recent work has shown that spatial heterogeneity in resource phenology can buffer mobile consumers from this constraint by allowing them to track changes in resource availability across space. For...
Full Text:: collared individuals William Deacy,1,4 William leacock,2 Jonathan B. armstrong,3 anD Jack a. stanforD1

Measurement of Tidal Form Drag Using Seafloor Pressure Sensors

Creator:: Warner, Sally J., MacCready, Parker, Moum, James N., and Nash, Jonathan D.
Abstract:: As currents flow over rough topography, the pressure difference between the up-and downstream sides results in form drag-a force that opposes the flow. Measuring form drag is valuable because it can be used to estimate the loss of energy from currents as they interact with topography. An array of bottom...
Resource Type:: Article
Full Text:: Washington, Seattle, Washington JAMES N. MOUM AND JONATHAN D. NASH College of Earth, Ocean, and Atmospheric

Development and Characterization of Seven Polymorphic Microsatellite Loci in Bembidion atrocaeruleum (Coleoptera: Carabidae)

Creator:: O'Callaghan, Matt J., Finn, Debra S., Williams, Mike, and Sadler, Jonathan P.
Abstract:: We isolated seven polymorphic microsatellite loci from a ground beetle (Bembidion atrocaeruleum, Coleoptera, Carabidae (Stephens, 1826)) associated with naturally and regularly disturbed floodplain habitat in northwest Europe. Loci were tested on 157 individuals collected from five distinct habitat patches across two adjacent drainage basins in Wales, United Kingdom, to assess...
Resource Type:: Article
Full Text:: Debra S. Finn, 1,3 Mike Williams, 4 and Jonathan P. Sadler 1 1School of Geography, Earth

Multivariate geostatistical analysis of groundwater contamination by pesticide and nitrate

Creator:: Smyth, Jeffrey D., Istok, Jonathan D., and Oregon State University. Water Resources Research Institute
Resource Type:: Technical Report
Full Text:: BY PESTICIDE AND NITRATE BY JEFFREY D . SMYTH JONATHAN D . ISTOK WATER RESOURCES RESEARCH

Statistical analysis of hydrological data from five small watersheds in western Oregon : Volume 1 : Analysis

Creator:: Istok, Jonathan D. and Oregon State University. Agricultural Experiment Station
Abstract:: Published June 1985. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: WATERSHEDS IN WESTERN OREGON VOLUME I: ANALYSIS Jonathan D. Istok Larry Boersma John S. Hickman M. E

Numerical computation of discrete differential scattering cross sections for Monte Carlo charged particle transport

Creator:: Walsh, Jonathan A., Palmer, Todd S., and Urbatsch, Todd J.
Abstract:: We investigate a method for numerically generating discrete scattering cross sections for use in charged particle transport simulations. We describe the cross section generation procedure and compare it to existing methods used to obtain discrete cross sections. The numerical approach presented here is generalized to allow greater flexibility in choosing...
Resource Type:: Article
Full Text:: Design and Assessment, Los Alamos National Laboratory, Los Alamos, NM 87545, United States i g h l i

Toward biologically meaningful net carbon exchange estimates for tall, dense canopies: Multi-level eddy covariance observations and canopy coupling regimes in a mature Douglas-fir forest in Oregon

Creator:: Thomas, Christoph K., Martin, Jonathan G., Law, Beverly E., and Davis, Kent
Abstract:: We sought to improve net ecosystem exchange (NEE) estimates for a tall, dense, mature Douglas-Fir forest in the Oregon Coast range characterized by weak flows, systematic wind directional shear, and limited turbulent mixing throughout the diurnal period. We used eddy covariance (EC) observations at two levels and concurrent biological measurements...
Resource Type:: Article
Full Text:: coupling regimes in a mature Douglas-fir forest in Oregon Christoph K. Thomasa,b,∗, Jonathan G. Martinb

Carbonates dissolution and precipitation in hemipelagic sediments overlaid by supersaturated bottom-waters - Gulf of Aqaba, Red Sea

Creator:: Steiner, Zvi, Lazar, Boaz, Reimers, Clare E., and Erez, Jonathan
Abstract:: Whether CaCO₃ dissolves within the top centimeters of marine sediments overlaid by deep, supersaturated bottom waters remains an area of debate in geochemistry. This uncertainty stems from the fact that different methods used to assess CaCO₃ dissolution rates often provide what appear to be profoundly different results. Here we combine...
Resource Type:: Article
Full Text:: , Clare E. Reimers, Jonathan Erez Fig. s1: A calibration curve for the oxygen microelectrode

Using the functional response of a consumer to predict biotic resistance to invasive prey

Creator:: Twardochleb, Laura A., Novak, Mark, and Moore, Jonathan W.
Abstract:: Predators sometimes provide biotic resistance against invasions by nonnative prey. Understanding and predicting the strength of biotic resistance remains a key challenge in invasion biology. A predator's functional response to nonnative prey may predict whether a predator can provide biotic resistance against nonnative prey at different prey densities. Surprisingly, functional...
Resource Type:: Article
Full Text:: JONATHAN W. MOORE1,3 1Ecology and Evolutionary Biology, University of California, Santa Cruz, California

A (Blurry) Vision of the Future: How Leader Rhetoric about Ultimate Goals Influences Performance

Creator:: Carton, Andrew M., Murphy, Chad, and Clark, Jonathan R.
Abstract:: One key responsibility of leaders involves crafting and communicating two types of messages—visions and values—that help followers understand the ultimate purpose of their work. Although scholars have long considered how leaders communicate visions and values to establish a sense of purpose, they have overlooked how these messages can be used...
Resource Type:: Article
Full Text:: chad.murphy@oregonstate.edu Jonathan R. Clark The Pennsylvania State University jonrclark@psu.edu

Is fire exclusion in mountain big sagebrush communities prudent? Soil nutrient, plant diversity and arthropod response to burning

Creator:: Davies, Kirk W., Bates, Jonathan D., Boyd, Chad S., and Nafus, Aleta M.
Abstract:: Fire has largely been excluded from many mountain big sagebrush communities. Managers are reluctant to reintroduce fire, especially in communities without significant conifer encroachment, because of the decline in sagebrush-associated wildlife. Given this management direction, a better understanding of fire exclusion and burning effects is needed. We compared burned to...
Resource Type:: Article
Full Text:: bluegrasses (Poa L.). Common perennial forbs included biscuitroots (Lomatium Raf.), milk- vetches (Astragalus

Restoration of Mountain Big Sagebrush Steppe Following Prescribed Burning to Control Western Juniper

Creator:: Davies, K. W., Bates, Jonathan D., Madsen, M. D., and Nafus, A. M.
Abstract:: Western juniper (Juniperus occidentalis ssp. occidentalis Hook) encroachment into mountain big sagebrush (Artemisia tridentata spp. vaseyana (Rydb.) Beetle) steppe has reduced livestock forage production, increased erosion risk, and degraded sagebrush-associated wildlife habitat. Western juniper has been successfully controlled with partial cutting followed by prescribed burning the next fall, but the...
Resource Type:: Article
Full Text:: productive sagebrush communities, are being encroached by juniper (Juniperus L.) and/or piñon pine species

Seasonal sea surface cooling in the equatorial Pacific cold tongue controlled by ocean mixing

Creator:: Moum, James N., Perlin, Alexander, Nash, Jonathan D., and McPhaden, Michael J.
Abstract:: Sea surface temperature (SST) is a critical control on the atmosphere(1), and numerical models of atmosphere-ocean circulation emphasize its accurate prediction. Yet many models demonstrate large, systematic biases in simulated SST in the equatorial 'cold tongues' (expansive regions of net heat uptake from the atmosphere) of the Atlantic(2) and Pacific(3)...
Resource Type:: Article
Full Text:: {, Jonathan D. Nash1 & Michael J. McPhaden2 Seasurface temperature (SST) is a critical control on

AlamInsightHydrogenBonding.pdf

Creator:: Alam, Todd M., Liao, Zuolei, Nyman, May, and Yates, Jonathan
Abstract:: Solid-state ¹H magic-angle spinning (MAS) NMR was used to investigate local proton environments in anhydrous [UO₂(OH)₂] (α-UOH) and hydrated uranyl hydroxide [(UO₂)₄O(OH₆ 6·5H₂O (metaschoepite). For the metaschoepite material, proton resonances of the μ₂-OH hydroxyl and interlayer waters were resolved, with two-dimensional (2D) double-quantum (DQ) ¹H–¹H NMR correlation experiments revealing strong...
Full Text:: Liao,‡ May Nyman,‡ and Jonathan Yates§ †Department of Organic Material Science, Sandia National

Antimicrobial Production in Burkholderia thailandensis

Creator:: Johnson, Stephanie R., Cook, Jonathan, Ball, Patrick, and Majercyzjk, Charlotte
Abstract:: Burkholderia thailandensis is a soil-dwelling bacterium that has been proven to produce antimicrobial compounds. We are interested in understanding how B. thailandensis regulates production of these compounds and also hope to identify and characterize novel bacterial factors that possess antimicrobial activity. In our research, we use a variety of methods...
Resource Type:: Poster
Full Text:: : www.PosterPresentations.com Antimicrobial Production in Burkholderia thailandensis Stephanie Johnson, Jonathan Cook, Patrick

Hexagonal global parameterization of arbitrary surfaces

Creator:: Nieser, Matthias, Palacios, Jonathan, Polthier, Konrad, and Zhang, Eugene
Abstract:: In this paper we introduce hexagonal global parameterizations, a new type of parameterization in which parameter lines respect six-fold rotational symmetries (6-RoSy). Such parameterizations enable the tiling of surfaces with regular hexagonal texture and geometry patterns and can be used to generate high-quality triangular remeshing. To construct a hexagonal parameterization...
Resource Type:: Article
Full Text:: Parameterization of Arbitrary Surfaces Matthias Nieser, Jonathan Palacios, Konrad Polthier, and Eugene Zhang F

NashJonathanCEOASStructureVariabilityInternal.pdf

Creator:: Pickering, Andy, Alford, Matthew, Nash, Jonathan, Lim, Byungho, and et al.
Abstract:: The Luzon Strait is the generation region for strong internal tides that radiate westward into the South China Sea and eastward into the western Pacific. Intrusions of the Kuroshio and strong mesoscale variability in the Luzon Strait can influence their generation and propagation. Here, the authors use eight moorings and...
Full Text:: ., Rainville, L., Buijsman, M., Ko, D. S., & Lim, B. (2015). Structure and Variability of Internal Tides in

Small-Scale Processes in the Coastal Ocean

Creator:: Moum, James N., Nash, Jonathan D., and Klymak, Jody M.
Abstract:: Varied observations over Oregon’s continental shelf illustrate the beauty and complexity of geophysical flows in coastal waters. Rapid, creative, and sometimes fortuitous sampling from ships and moorings has allowed detailed looks at boundary layer processes, internal waves (some extremely nonlinear), and coastal currents, including how they interact. These processes drive...
Resource Type:: Article
Full Text:: along ship track (m) 100 de pt h (m ) S P E C I A L I S S U E O N C O A S tA L O C E A N P r O

The role of turbulence stress divergence in decelerating a river plume

Creator:: Kilcher, Levi F., Nash, Jonathan D., and Moum, James N.
Abstract:: Turbulence controls the composition of river plumes through mixing and alters the plume's trajectory by diffusing its momentum. While believed to play a crucial role in decelerating river-source waters, the turbulence stress in a near-field river plume has not previously been observationally quantified. In this study, finely resolved density, velocity,...
Resource Type:: Article
Full Text:: Jonathan D. Nash,1 and James N. Moum1 Received 24 June 2011; revised 27 March 2012; accepted 2 April 2012

Fine-scale planktonic habitat partitioning at a shelf-slope front revealed by a high-resolution imaging system

Creator:: Greer, Adam T., Cowen, Robert K., Guigand, Cedric M., and Hare, Jonathan A.
Abstract:: Ocean fronts represent productive regions of the ocean, but predator-prey interactions within these features are poorly understood partially due to the coarse-scale and biases of net-based sampling methods. We used the In Situ Ichthyoplankton Imaging System (ISIIS) to sample across a front near the Georges Bank shelf edge on two...
Resource Type:: Article
Full Text:: ScienceDirect Journal of Marine Systems j ourna l homepage: www.e lsev ie r .com/ locate / jmarsys Fine-scale

Structure and composition of a strongly stratified, tidally pulsed river plume

Creator:: Nash, Jonathan, Kilcher, Levi F., and Moum, James N.
Abstract:: The initial composition of a river plume depends on the cumulative turbulent entrainment within the estuary and how this dilutes the supplied freshwater. Here we examine the relative roles of turbulence and freshwater input using observations from the Columbia River estuary and plume during two periods with contrasting river flow....
Resource Type:: Article
Full Text:: , tidally pulsed river plume Jonathan D. Nash,1 Levi F. Kilcher,1 and James N. Moum1 Received 21 July 2008

Familiarity with a female does not affect a male's courtship intensity in garter snakes Thamnophis sirtalis parietalis

Creator:: Shine, Richard, Webb, Jonathan K., Lane, Amanda, and Mason, Robert T.
Abstract:: In many animal species, males direct more intense courtship towards females they have not previously encountered, than towards females with which they have previously mated. To test the factors responsible for this "Coolidge Effect", we need studies on a wide range of taxa – including those with mating systems in...
Resource Type:: Article
Full Text:: garter snakes Thamnophis sirtalis parietalis Richard SHINE1*, Jonathan K. WEBB1, Amanda LANE1, Robert T

Statistical analysis of hydrological data from five small watersheds in western Oregon : Volume II: Data

Creator:: Istok, Jonathan D. and Oregon State University. Agricultural Experiment Station
Abstract:: Published June 1985. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: SMALL WATERSHEDS IN WESTERN OREGON VOLUME II: DATA Jonathan D. Istok John S. Hickman Larry Boersma M

Hatfield Marine Science Center Dynamic Revetment Project DSL permit #45455-FP: Monitoring Report February 2014

Creator:: Cowen, Robert, Nelson, Walt, Allen, Jonathan, Arbuckle, Scarlett, and Folger, Christina
Abstract:: Stabilization of the Yaquina Bay shoreline along the northeastern edge of the Hatfield Marine Science Center (HMSC) campus became necessary to halt erosion that threatened both HMSC critical infrastructure (seawater storage tank) and public access to the HMSC Nature Trail. A Dynamic Revetment (gravel beach) was installed in November, 2011...
Resource Type:: Technical Report
Full Text:: : Walt Nelson, US Environmental Protection Agency Contributors: Beach Profiles: Jonathan Allan

Implications for an exercise prescription authoring notation

Creator:: Dodge, Jonathan E., Metoyer, Ronald, and Gunter, Katherine B.
Abstract:: Communicating dynamic motion content, such as exercise, with a static medium, such as paper, is difficult. The technology exists for presenting 3D animated exercise content to patients, however, the tools for allowing exercise domain experts to effectively author the content do not exist. We conducted two formative studies with exercise...
Resource Type:: Conference Proceeding
Full Text:: Implications for an Exercise Prescription Authoring Notation Jonathan

Hatfield Marine Science Center Dynamic Revetment Project DSL permit # 45455-FP: Final Monitoring Report February, 2016

Creator:: Cowen, Robert, Nelson, Walter, Allan, Jonathan, Arbuckle, Scarlett, and Folger, Christina
Abstract:: Stabilization of the Yaquina Bay shoreline along the northeastern edge of the Hatfield Marine Science Center (HMSC) campus in Newport, Oregon became necessary to halt erosion that threatened both HMSC critical infrastructure (seawater storage tank) and public access to the HMSC Nature Trail. A Dynamic Revetment (gravel beach) was installed...
Resource Type:: Technical Report
Full Text:: Nelson, US Environmental Protection Agency Contributors: Beach Profiles: Jonathan Allan, Oregon

Statistical analysis of climatological data to characterize erosion potential : 2. precipitation in eastern Oregon/Washington

Creator:: Brown, Barbara G., Istok, Jonathan D., Katz, Richard W., and Murphy, Allan H.
Abstract:: Periods of precipitation with certain combinations of characteristics (e.g., high intensity rainfall on saturated soil) can lead to appreciable soil loss in the Pacific Northwest. In order to assign realistic probabilities to the occurrence of these periods for use in predicting long-term erosion rates, a soil erosion-specific definition of a...
Resource Type:: Technical Report
Full Text:: OREGON/WASHINGTON Barbara G. Brown Jonathan D. Istok Richard W. Katz Allan H. Murphy AUTHORS: Barbara G

Turbulence and high-frequency variability in a deep gravity current outflow

Creator:: Nash, Jonathan D., Peters, Hartmut, Kelly, Samuel M., Pelegri, Josep L., Emelianov, Mikhail, and Gasser, Marc
Abstract:: Intensive sampling of the deep Mediterranean outflow 70 km W of the Strait of Gibraltar reveals a strong, tidally modulated gravity current embedded with large-amplitude oscillations and energetic turbulence. The flow appears to be hydraulically controlled at a small topographic constriction, with turbulence and internal waves varying together and increasing...
Resource Type:: Article
Full Text:: current outflow Jonathan D. Nash,1 Hartmut Peters,2 Samuel M. Kelly,1,3 Josep L. Pelegrí,4 Mikhail

Transient groundwater chemistry near a river: Effects on U(VI) transport in laboratory column experiments

Creator:: Yin, Jun, Haggerty, Roy, Stoliker, Deborah L., Kent, Douglas B., Istok, Jonathan D., Greskowiak, Janek, and Zachara, John M.
Abstract:: In the 300 Area of a U(VI)-contaminated aquifer at Hanford, Washington, USA, inorganic carbon and major cations, which have large impacts on U(VI) transport, change on an hourly and seasonal basis near the Columbia River. Batch and column experiments were conducted to investigate the factors controlling U(VI) adsorption/desorption by changing...
Resource Type:: Article
Full Text:: : Effects on U(VI) transport in laboratory column experiments Jun Yin,1 Roy Haggerty,1 Deborah L. Stoliker

The impact of the 2009–10 El Nino Modoki on U.S. West Coast beaches

Creator:: Barnard, Patrick L., Allan, Jonathan, Hansen, Jeff E., Kaminsky, George M., Ruggiero, Peter, and Doria, Andre
Abstract:: High-resolution beach morphology data collected along much of the U.S. West Coast are synthesized to evaluate the coastal impacts of the 2009–10 El Niño. Coastal change observations were collected as part of five beach monitoring programs that span between 5 and 13 years in duration. In California, regional wave and...
Resource Type:: Article
Full Text:: U.S. West Coast beaches Patrick L. Barnard,1 Jonathan Allan,2 Jeff E. Hansen,1,3 George M. Kaminsky,4

Norms Governing Urban African American Adolescents' Sexual and Substance-Using Behavior

Creator:: Dolcini, M. Margaret, Catania, Joseph A., Harper, Gary W., Watson, Susan E., Ellen, Jonathan M., and Towner, Senna L.
Abstract:: Using a probability-based neighborhood sample of urban African American youth and a sample of their close friends (N = 202), we conducted a one-year longitudinal study to examine key questions regarding sexual and drug using norms. The results provide validation of social norms governing sexual behavior, condom use, and substance...
Resource Type:: Article
Full Text:: University Susan E. Watson' Jonathan M. Ellend Public Health Institute Johns Hopkins University Senna L

Impact of estuarine benthic algal production on dissolved nutrients and water quality in the Yaquina River Estuary, Oregon

Creator:: Garber, Jonathan H., Collins, John L. (John Leopold), 1948-, Davis, Michael W., Oregon State University. Water Resources Research Institute, and Geological Survey (U.S.)
Resource Type:: Technical Report
Full Text:: WATER QUALITY IN THE YAQUINA RIVER ESTUARY, OREGON by Jonathan H. Garber, John L . Collins, Jr ., and

Characterization of the inflammatory phenotype of Mycobacterium avium subspecies paratuberculosis using a novel cell culture passage model

Creator:: Everman, Jamie L., Eckstein, Torsten M., Roussey, Jonathan, Coussens, Paul, Bannantine, John P., and Bermudez, Luiz E.
Abstract:: Understanding the pathogenic mechanisms of Mycobacterium avium subspecies paratuberculosis (MAP) and the host responses to Johne's disease is complicated by the multi-faceted disease progression, late-onset host reaction and the lack of available ex vivo infection models. We describe a novel cell culture passage model that mimics the course of infection...
Resource Type:: Article
Full Text:: culture passage model Everman, J. L., Eckstein, T. M., Roussey, J., Coussens, P., Bannantine, J. P

Incorporating climate change and morphological uncertainty into coastal change hazard assessments

Creator:: Baron, Heather M., Ruggiero, Peter, Wood, Nathan J., Harris, Erica L., Allan, Jonathan, Komar, Paul D., and Corcoran, Patrick
Abstract:: Documented and forecasted trends in rising sea levels and changes in storminess patterns have the potential to increase the frequency, magnitude, and spatial extent of coastal change hazards. To develop realistic adaptation strategies, coastal planners need information about coastal change hazards that recognizes the dynamic temporal and spatial scales of...
Resource Type:: Article
Full Text:: ., Harris, E. L., Allan, J., Komar, P. D., & Corcoran, P. (2015). Incorporating climate change and

Histone modifications rather than the novel regional centromeres of Zymoseptoria tritici distinguish core and accessory chromosomes

Creator:: Schotanus, Klaas, Soyer, Jessica L., Connolly, Lanelle R., Grandaubert, Jonathan, Happel, Petra, Smith, Kristina M., Freitag, Michael, and Stukenbrock, Eva H.
Abstract:: Background: Supernumerary chromosomes have been found in many organisms. In fungi, these “accessory” or “dispensable” chromosomes are present at different frequencies in populations and are usually characterized by higher repetitive DNA content and lower gene density when compared to the core chromosomes. In the reference strain of the wheat pathogen,...
Resource Type:: Article
Full Text:: chromosomes Schotanus, K., Soyer, J. L., Connolly, L. R., Grandaubert, J., Happel, P., Smith, K. M

Reducing Livestock Effects on Public Lands in the Western United States as the Climate Changes: A Reply to Svejcar et al.

Creator:: Beschta, Robert L., Donahue, Debra L., DellaSala, Dominick A., Rhodes, Jonathan J., Karr, James R., O'Brien, Mary H., Fleischner, Thomas L., and Williams, Cindy Deacon
Abstract:: Beschta et al. (2013) synthesized the ecological effects 41 of climate change and ungulate grazing on western public lands, grounding their recommendations in ecological considerations and federal agency legal authority and obligations. Svejcar et al. (2014) suggest that Beschta et al. (2013) neither “present a balanced synthesis of the scientific...
Resource Type:: Article
Full Text:: * Jonathan J. Rhodes 3 James R. Karr * Mary H. O’Brien * Thomas L. Fleischner * Cindy Deacon Williams

Adapting to Climate Change on Western Public Lands: Addressing the Ecological Effects of Domestic, Wild, and Feral Ungulates

Creator:: Beschta, Robert L., Donahue, Deborah L., DellaSala, Dominick A., Rhodes, Jonathan J., Karr, James R., O'Brien, Mary H., Fleischner, Thomas L., and Deacon-Williams, Cindy
Abstract:: Climate change affects public land ecosystems and services throughout the American West and these effects are projected to intensify. Even if greenhouse gas emissions are reduced, adaptation strategies for public lands are needed to reduce anthropogenic stressors of terrestrial and aquatic ecosystems and to help native species and ecosystems survive...
Resource Type:: Article
Full Text:: , and Feral Ungulates Robert L. Beschta, Debra L. Donahue, Dominick A. DellaSala, Jonathan J

Research progress report 2005 : Eastern Oregon Agricultural Research Center

Creator:: Oregon State College. Agricultural Experiment Station, United States. Agricultural Research Service, and Eastern Oregon Agricultural Research Center
Abstract:: The purpose of this progress report is to provide an update of recently completed and ongoing research programs at the Eastern Oregon Agricultural Research Center (EOARC), located in Bums. Oregon. Oregon State University's Agricultural Experiment Station (AES) and the U.S. Department of Agriculture's Agricultural Research Service (ARS) jointly fund the...
Resource Type:: Technical Report

Ethanol and High-Value Terpene Co-Production from Lignocellulosic Biomass of Cymbopogon flexuosus and Cymbopogon martinii

Creator:: Joyce, Blake L., Zheljazkov, Valtcho D., Sykes, Robert, Cantrell, Charles L., Hamilton, Choo, Mann, David G., Rodriguez, Miguel, Mielenz, Jonathan R., Astatkie, Tess, and Stewart, C. Neal, Jr.
Abstract:: Cymbopogon flexuosus, lemongrass, and C. martinii, palmarosa, are perennial grasses grown to produce essential oils for the fragrance industry. The objectives of this study were (1) to evaluate biomass and oil yields as a function of nitrogen and sulfur fertilization, and (2) to characterize their utility for lignocellulosic ethanol compared...
Resource Type:: Article
Full Text:: -Production from Lignocellulosic Biomass of Cymbopogon flexuosus and Cymbopogon martinii Joyce, B. L

Are Any Coastal Internal Tides Predictable?

Creator:: Nash, Jonathan D., Shroyer, Emily L., Kelly, Samuel M., Inall, Mark E., Duda, Timothy F., Levine, Murray D., Jones, Nicole L., and Musgrave, Ruth C.
Abstract:: Surface tides are the heartbeat of the ocean. Because they are controlled by Earth's motion relative to other astronomical objects in our solar system, surface tides act like clockwork and generate highly deterministic ebb and flow familiar to all mariners. In contrast, baroclinic motions at tidal frequencies are much more...
Resource Type:: Article
Full Text:: | Vol. 25, No. 280 B y J o N at h a N D . N a s h , E m i ly l . s h r o y E r , s a m u E l m

The Cascade of Tidal Energy from Low to High Modes on a Continental Slope

Creator:: Kelly, Samuel M., Nash, Jonathan D., Martini, Kim I., Alford, Matthew H., and Kunze, Eric
Abstract:: The linear transfer of tidal energy from large to small scales is quantified for small tidal excursion over a near-critical continental slope. A theoretical framework for low-wavenumber energy transfer is derived from “flat bottom” vertical modes and evaluated with observations from the Oregon continental slope. To better understand the observations,...
Resource Type:: Article
Full Text:: High Modes on a Continental Slope SAMUEL M. KELLY* AND JONATHAN D. NASH College of Oceanic and

Hatfield Marine Science Center Dynamic Revetment Report DSL permit #45455-FP Monitoring Report February, 2013

Creator:: Webster, Janet G., Nelson, Walt, Allan, Jonathan, Stephensen, Shawn, Politano, Vincent, and Folger, Christina
Abstract:: Stabilization of the Yaquina Bay shoreline along the northeastern edge of the Hatfield Marine Science Center (HMSC) campus became necessary to halt erosion that threatened both HMSC critical infrastructure (seawater storage tank) and public access to the HMSC Nature Trail. A Dynamic Revetment (gravel beach) was installed in November, 2011...
Resource Type:: Technical Report
Full Text:: Environmental Protection Agency Contributors: Beach Profiles: Jonathan Allan, Oregon Department of

Observations of Internal Tides on the Oregon Continental Slope

Creator:: Martini, Kim I., Alford, Matthew H., Kunze, Eric, Kelly, Samuel M., and Nash, Jonathan D.
Abstract:: A complex superposition of locally forced and shoaling remotely generated semidiurnal internal tides occurs on the Oregon continental slope. Presented here are observations from a zonal line of five profiling moorings deployed across the continental slope from 500 to 3000 m, a 24-h expendable current profiler (XCP) survey, and five...
Resource Type:: Article
Full Text:: Oceanography, University of Washington, Seattle, Washington SAMUEL M. KELLY AND JONATHAN D. NASH College of

Resource waves: phenological diversity enhances foraging opportunities for mobile consumers

Creator:: Armstrong, Jonathan B., Takimoto, Gaku, Schindler, Daniel E., Hayes, Matthew M., and Kauffman, Matthew J.
Abstract:: Time can be a limiting constraint for consumers, particularly when resource phenology mediates foraging opportunity. Though a large body of research has explored how resource phenology influences trophic interactions, this work has focused on the topics of trophic mismatch or predator swamping, which typically occur over short periods, at small...
Resource Type:: Article
Full Text:: Neighborhood size L = 1 L = 20 Random Optimal Matching Perceptual resolution 1108 JONATHAN B

The effect of El Niño Southern Oscillation cycles on the decadal scale suspended sediment behavior of a coastal dry-summer subtropical catchment

Creator:: Gray, Andrew B., Pasternack, Gregory B., Watson, Elizabeth B., Warrick, Jonathan A., and Goñi, Miguel A.
Abstract:: Rivers display temporal dependence in suspended sediment–water discharge relationships. Although most work has focused on multi-decadal trends, river sediment behavior often displays sub-decadal scale fluctuations that have received little attention. The objectives of this study were to identify inter-annual to decadal scale fluctuations in the suspended sediment–discharge relationship of a...
Resource Type:: Article
Full Text:: B. Gray,1* Gregory B. Pasternack,1 Elizabeth B. Watson,2 Jonathan A. Warrick3 and Miguel A. Goñi4 1

Effects of antecedent hydrologic conditions, time dependence, and climate cycles on the suspended sediment load of the Salinas River, California

Creator:: Gray, Andrew B., Pasternack, Gregory B., Watson, Elizabeth B., Warrick, Jonathan A., and Goñi, Miguel A.
Abstract:: See pdf for abstract.
Resource Type:: Article
Full Text:: , Philadelphia, PA 19103, USA. Andrew B. Gray a,⇑, Gregory B. Pasternack a, Elizabeth B. Watson a,1, Jonathan A

MateBruceHMSCAssessmentGeneticStructure.pdf

Creator:: Lang, Aimée R., Calambokidis, John, Scordino, Jonathan, Mate, Bruce R., and et al.
Abstract:: Although most eastern North Pacific (ENP) gray whales feed in the Bering, Beaufort, and Chukchi Seas during summer and fall, a small number of individuals, referred to as the Pacific Coast Feeding Group (PCFG), show intra- and interseasonal fidelity to feeding areas from northern California through southeastern Alaska. We used...
Full Text:: whales on their feeding grounds Lang, A. R., Calambokidis, J., Scordino, J., Pease, V. L., Klimek, A

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