Concurrent Task Management (CTM) is the process by which human operators of complex systems (such as pilots, drivers, surgeons, and operators) allocate their attention among multiple concurrent tasks (Funk, 1991). A more thorough understanding of the human operator's knowledge, skills, and
abilities associated with CTM might help us to prevent...
Tan spot of wheat is an economically significant disease caused by the fungal pathogen, Pyrenophora tritici-repentis. Certain races of the fungus secrete Ptr ToxA (ToxA), a 13.2 kDa proteinaceous host-selective toxin that is responsible and sufficient to cause disease in susceptible wheat varieties. Disease symptoms develop only when the ToxA...
Presentation on Oregon State University's efforts to build an Institutional Repository with a focus on establishing buy-in, customization, and future directions. Presented as part of a panel entitled "Managing Digital Assets: the Promise of IRs" at the Greater Western Library Association (GWLA) Board Meeting on October 3, 2005.
Discusses the ease and usefulness of conducting usability studies and provides an example of usability testing at Oregon State University undertaken to improve the DSpace Electronic Thesis/Dissertation (ET/D) submission process.
Observations of sunlight reflected from regions of sun glint are used to check the relative calibration of spectral radiances obtained with imaging radiometers. Reflectances at different wavelengths for sun-glint regions are linearly related. Provided that the atmosphere is reasonably transparent at the wavelengths, the aerosol burden is reasonably light, 0.64-μm...
The Plant Ontology Consortium (POC) (www.plantontology.org) is a collaborative
effort among several plant databases and experts in plant systematics, botany
and genomics. A primary goal of the POC is to develop simple yet robust
and extensible controlled vocabularies that accurately reflect the biology of plant
structures and developmental stages. These...
Contents: Student Success: Creating conditions that Matter, What OSU First Year Students Say About Their First Few Months of Residential Experience, Student Borrowing and Debt Burden, and Thoughts on First Year Retention.
Published October 2005. Reviewed September 2013. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Revised October 2005. Reviewed September 2013. 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
Older people need various degrees of assistance with financial matters. Some need minimal help; for example, help with reading the fine print on bills and financial forms or preparing checks for signature. Others, who are homebound but able to direct their personal finances, may need someone to carry out their...
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...
The listing of many Pacific Northwest anadromous fish stocks as threatened or endangered has heightened the need to protect or enhance the health of entire river systems. Salmon, steelhead, and other anadromous fish swim from the ocean to the headwaters of their home river, where they spawn. Their young hatch...
The Clackamas CWPP is a consolidated reference documenting wildfire hazards, prevention and response efforts, and resource sharing information for all participating local, state and federal fire agencies. It improves upon historical fire planning efforts by providing a more localized and accurate approach for determining wildfire hazards and implementing best practices...
Previous observations of light levels and phytoplankton abundances along the Oregon coast demonstrated that phytoplankton attenuated light sufficiently to potentially limit the growth of intertidal macrophytes and therefore structure local intertidal communities. Inspired by this observation, in spring 2004, I initiated a study to quantify the direct and indirect benthic...
As researchers, policymakers and employers begin focusing
on consumer driven health plan models and medical savings
accounts (MSAs), a better understanding of the political
viability of such reform initiatives is necessary. The
purpose of this study was to survey state legislators'
knowledge and perceptions of medical savings accounts
(MSAs) and...
Active contour models have been widely applied to image segmentation and
analysis. It has been successfully used in contour detection for object recognition,
computer vision, computer graphics, and biomedical image processing such as X-ray,
MRI and Ultrasound images.
The energy-minimizing active contour models or snakes were developed by Kass,
Witkin...
Horizontal current measurements from an array of moored acoustic Doppler profilers are assimilated sequentially into a model of coastal wind-driven circulation off Oregon during the upwelling season of May–August 2001. Model results are compared against independent moored and ship survey data to document a positive effect of velocity data assimilation...
Pacific winter waters, a major source of nutrients and buoyancy to the Arctic Ocean, are thought to ventilate the Arctic's lower halocline either by injection (isopycnal or penetrative) of cold saline shelf waters, or by cooling and freshening Atlantic waters upwelled onto the shelf. Although ventilation at salinity (S) >...
Near the bottom, the velocity profile in the bottom boundary layer over the continental
shelf exhibits a characteristic law-of-the-wall that is consistent with local estimates of
friction velocity from near-bottom turbulence measurements. Farther from the bottom, the
velocity profile exhibits a deviation from the law-of-the-wall. Here the velocity gradient
continues...
A reduced-order dynamic model is derived that captures the primary dynamics of a jet-in-crossflow. This is significant progress toward the end goal of reduced order model based closed-loop flow control. The reduced order model is a set of differential equations obtained through the use of snapshot based Proper Orthogonal Decomposition...
Previous research has revealed gender differences that impact females’ willingness to adopt software features in end users’ programming environments. Since these features have separately been shown to help end users problem solve, it is important to female end users’ productivity that we find ways to make these features more acceptable...
Many economists believe that the slowdown of the productivity growth rates in the U.S. economy in early 1970's was a consequence of the increased level of environmental regulations. The main reason presented in support of this argument is that increased environmental regulations impose an additional burden to the firms, thus...
Global warming is progressing more rapidly in polar-regions, and its effects are
more pronounced at high latitudes than in other parts of the globe. Changing ocean
conditions due to climate change are predicted to have dramatic impacts on marine foodwebs.
Seabirds, as upper trophic-level consumers, provide a highly visible and...
Laboratory data of free surface elevations and fluid velocities were
obtained using a laser-Doppler velocimeter for the case of a periodic wave
plunging over an impermeable, steep (1:10) slope with a fixed bottom roughness.
The measurements were conducted over 15 cross-shore locations from the outer
surf zone to the swash...
Recently, continuous-time ΔΣ modulators are appearing increasingly often in both the literature and the marketplace due to their features of inherent antialiasing and relaxed requirements for opamp and so on. However, several nonideal factors such as clock jitter, excess loop delay, inter-symbol interference and so on, degrade the SNR performance...
Czech libraries have undergone significant changes since the fall of communism in 1989. All facets of Czech librarianship
have been affected and continue to evolve as the country adopts international practices and standards. OSU catalog
librarian Richard Sapon-White's presentation covers the state
of Czech libraries, drawing on his six months...
This study illustrates geoarchaeological and paleoenvironmental approaches to the
investigation of an active margin coastal setting and provides examples of how information gleaned through examination of the stratigraphic record can reveal depositional signatures that provide insights into the geomorphic and tectonic forces active within coastal river basins. Three case studies...
A large number of sequential decision-making problems in uncertain environments
can be modeled as Markov Decision Processes (MDPs). In such settings, an agent
can observe at each time step the state of the environment and then executes an
action, causing a stochastic transition to a new state of the environment...
Paclitaxel is a very important anticancer drug commonly called Taxol®.
We know from previous work (Hoffman, et al., 1998) that Taxol exists in filbert, Corylus avellana L. material. Quantification of Taxol in filbert plant material is painstaking and hitherto was accomplished by rapidly processing single batches in a complicated procedure...
This dissertation addresses the "multi-machine carryover sequence
dependent group-scheduling problem with anticipatory setups," which arises in
the printed circuit board (PCB) manufacturing. Typically, in PCB manufacturing
different board types requiring similar components are grouped together to
reduce setup times and increase throughput. The challenge is to determine the
sequence of...