| Source and Path Calibration in Regions of Poor Crustal Propagation using Temporary, Large-Aperture, High-Resolution Seismic Arrays |
30-Sep-2009 |
9 pages |
| Authors:
John L Nabelek; Jochen Braunmiller; W S Phillips; OREGON STATE UNIV CORVALLIS
|
 | Broadband seismic data acquired during the Hi-CLIMB field experiment are used to study seismic events and path propagation in the Nepal Himalaya and south-central Tibetan Plateau. Similarities in regional propagation between Tibet and Iran motivate this new study. The 2002-2005 Hi-CLIMB experiment consisted of 233 stations distributed along a dense 800 km linear north-south array extending from the Himalayan foreland into the central Tibetan Plateau. The main array was flanked ... |
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| Fin Whales in the Mediterranean Sea: Habitat Identification and Oceanographic Characterization |
Jun-2009 |
12 pages |
| Authors:
Bruce R Mate; OREGON STATE UNIV CORVALLIS
|
| This project identified the seasonal distribution and movements of fin whales in the Mediterranean Sea with satellite-monitored radio tags in relation to environmental parameters: sea surface temperature, chlorophyll concentration, current movement, primary production and prey abundance in collaboration with the laboratory of Dr. Christophe Guinet. By comparing these movements with the environmental parameters, a better understanding of fin whale ecology will be possible. The telemetry information will enable collaborators to ... |
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| Characterization of Convective Boiling in Branching Channel Heat Sinks |
06-May-2009 |
17 pages |
| Authors:
Deborah V Pence; James A Liburdy; Vinod Narayanan; OREGON STATE UNIV CORVALLIS
|
| Convective boiling and gas-liquid flows in branching microscale flow networks within disk-shaped heat sinks were studied experimentally. Void fraction and flow regime variations as a function of branch level were reported for gas-liquid flows and compared with existing void fraction correlations and regime maps, respectively. Two methods for assessing void fraction were used, with void fraction assessed using two-dimensional high-speed images providing the best assessment. Void fraction in convective boiling ... |
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| Modeling the Propagation of Failures in Software Driven Hardware Systems to Enable Risk-Informed Design |
Nov-2008 |
12 pages |
| Authors:
Irem Y Tumer; David C Jensen; Tolga Kurtoglu; OREGON STATE UNIV CORVALLIS
|
| Software-driven hardware configurations account for the majority of modern complex systems. The often costly failures of such systems can be attributed to software specific, hardware specific, or software/hardware interaction failures. The understanding of the propagation of failures in a complex system is critical because, while a software component may not fail in terms of loss of function, a software operational state can cause an associated hardware failure. This research is ... |
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| Prostate Cancer Prevention by Sulforaphane, a Novel Dietary Histone Deacetylase Inhibitor |
JAN 2008 |
11 pages |
| Authors:
Yu Zhen; OREGON STATE UNIV CORVALLIS
|
| Prostate cancer is the second leading cause of cancer related death in men. To test Sulforaphane (SFN) as a novel histone deacetylases (HDAC) inhibitor and explore the mechanism of SFN protection against prostate cancer, different stage of prostate cancerous cells were treated with 15muM or 30 muM SFN and harvest 48hr later for MTT assay, HDAC activity and western blot assay. MTT cell proliferation showed that SFN and its metabolites ... |
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| 3-D Wave-Structure Interaction with Coastal Sediments - A Multi-Physics/Multi-Solution-Techniques Approach |
Jan 2008 |
15 pages |
| Authors:
Solomon C Yim; OREGON STATE UNIV CORVALLIS
|
| The long term goal of this research is twofold: (1) develop an advanced multi-physics model with a multi-numerical solution techniques approach to predict nonlinear dynamic behavior of impact burial and flow-induced motion of flexible structures (mines) and surrounding sediments (sand) in the marine environment; and (2) calibrate resulting models with experimental and field measurements. The predictive capability developed in this research will eventually be integrated into an overarching computational framework ... |
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| Multi-sensor Remote Sensing in the Nearshore |
Jan 2008 |
12 pages |
| Authors:
Merrick C Haller; OREGON STATE UNIV CORVALLIS
|
| The proposed program directly supports the Navy goal of predicting the 4D nearshore environment for amphibious operations that involve surf zone breaching. Our effort specifically involves improving our understanding of the fundamental relationships between nearshore hydrodynamic processes and remote sensing observations of these processes from multiple remote sensors. We utilize this understanding to improve our ability to numerically simulate and, hence, predict the time and space variability of the nearshore ... |
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| Predictability and Dynamics of Geophysical Fluids Flows - GRA Extension |
JAN 2007 |
2 pages |
| Authors:
Roger M. Samelson; OREGON STATE UNIV CORVALLIS
|
| Research under this grant, an extension of Grant number N00014-98-1-08l3 that supported the completion of the Ph.D. thesis of Christopher L. Wolfe, focused primarily on computations of unstable nonlinear periodic solutions, time-dependent normal modes (Floquet vectors) and singular vectors in a two-layer quasi-geostrophic channel model. The model was studied in a strongly nonlinear regime, in which small disturbances to an unstable, steady, zonal, baroclinic shear flow grow to finite amplitude ... |
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| Microscale Power Generation Based on Radiolytic Processes (Preprint) |
DEC 2006 |
6 pages |
| Authors:
Richard B. Peterson; Brian K. Paul; Todd Palmer; Qiao Wu; William Jost; Chih-Heng T. Tseng; Santosh Tiwari; Gertrude Patello; Edgar C. Buck; Jamelyn D. Holladay; OREGON STATE UNIV CORVALLIS
|
| Oregon State University, Battelle Pacific Northwest Division, and Case Western Reserve University have been investigating nuclear-to-electric power generation utilizing a technique based on closed cycle fuel cell operation. The approach being developed is to first use the decay energy of a radioisotope to generate H2 and O2 from water, then to utilize these species in a fuel cell to generate electricity. This method can regenerate its own reactants and operate ... |
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| Generating an Aerodynamic Model for Projectile Flight Simulation Using Unsteady, Time Accurate Computational Fluid Dynamic Results |
SEP 2006 |
34 pages |
| Authors:
Joseph Kokes; Mark Costello; Jubaraj Sahu; OREGON STATE UNIV CORVALLIS
|
| A method to efficiently generate a complete aerodynamic description for projectile flight dynamic modeling is described. At the core of the method is an unsteady, time accurate computational fluid dynamics simulation that is tightly coupled to a rigid body dynamics simulation. A set of n short time snippets of simulated projectile motion at m different Mach numbers is computed and employed as baseline data. For each time snippet, aerodynamic forces ... |
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| KI-LEARN: Knowledge-Intensive Learning Methods for Knowledge-Rich/Data-Poor Domains |
31 AUG 2006 |
49 pages |
| Authors:
Thomas G. Dietterich; Angelo Restificar; Prasad Tadepalli; Bruce D'Ambrosio; Jon Herlocker; Alan Fern; Eric Altendorf; Sriraam Natarajan; Jianqiang Shen; Xinlong Bao; OREGON STATE UNIV CORVALLIS
|
| Knowledge Representation and Reasoning (KRR) has developed a wide range of methods for representing knowledge and reasoning from it to produce expert-level performance. Despite these accomplishments, there is one major problem preventing the wide-spread application of KRR technology: the inability to support learning. This makes KRR systems brittle and difficult to maintain. On the other hand, Machine Learning (ML) has developed a wide range of methods for learning from examples. ... |
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| Machine Learning for the Knowledge Plane |
JUN 2006 |
66 pages |
| Authors:
OREGON STATE UNIV CORVALLIS
|
| In 2003, Dave Clark (MIT) proposed a new abstract internet layer called the Knowledge Plane (KP) whose purpose is to support network applications such as general fault management, self configuration, and performance management that require distributed, self-aware cognitive processing. The heart of this idea is to combine techniques from machine learning with new architectural concepts in networking to make the internet self-aware and self-managing. This will require revolutionary advances in ... |
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| Capturing Uncertainty in the Common Tactical-Environmental Picture |
MAR 2006 |
3 pages |
| Authors:
Murray D. Levine; OREGON STATE UNIV CORVALLIS
|
| This research is one component of a team effort with the goal of using existing science to represent the uncertainty in the tactical and environmental picture to improve acoustic tracking and localization of submarines. The project objective was to develop an end-to-end system that incorporates the uncertainties in the sound speed field, the bottom sediment properties, and the internal wave field, to determine the ultimate uncertainty in the estimation of ... |
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| Nanoprobe Directed Tumor Imaging Using pH Activated Peptides as Contrast Agent Carriers |
MAR 2006 |
13 pages |
| Authors:
John E. Mata; Scout Gustafson; OREGON STATE UNIV CORVALLIS
|
| We characterized a class of modified peptides designed to activate in the extracellular space of tumors in which pH is below 7.0 in cell culture and in tumor bearing mice. These "molecular engines" change shape in a low pH environment, become lipophilic, and embed into the plasma membrane. Our studies suggest that a molecular engine with a pT of 6.8-6.9 will deliver an 8-carboxyfluoroscein ligand to the surface of tumor ... |
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| Predictability in Unstable, Continuous Systems/Predictability and Dynamics of Geophysical Fluid Flows |
DEC 2005 |
3 pages |
| Authors:
Roger M. Samelson; OREGON STATE UNIV CORVALLIS
|
| Research under this grant focused primarily on computations of unstable nonlinear periodic solutions, time-dependent normal modes (Floquet vectors), and singular vectors in a two-layer quasi-geostrophic channel model. The model was studied in weakly and strongly nonlinear regimes, in which small disturbances to an unstable, steady, zonal, baroclinic shear flow grow to finite amplitude and continue to vacillate irregularly for arbitrarily long times. The computation of time-dependent, normal-mode disturbances to unstable, ... |
|
| COAMPS Simulations of the Coastal Atmosphere |
DEC 2005 |
3 pages |
| Authors:
Eric D. Skyllingstad; Roger M. Samelson; OREGON STATE UNIV CORVALLIS
|
| Work has focused primarily on simulations of the coastal atmosphere, and on building a coupled regional ocean-atmosphere model, based on the Naval Research Laboratory - COAMPS and Rutgers/UCLA ROMS models, for use on multiple processor, cluster systems. Progress to date includes the development of a processor management code module using the Model Coupling Toolkit (MCT) (Argonne National Laboratory). The management module is able to run both COAMPS and ROMS on ... |
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| Prediction of Swerving Motion of a Dual-Spin Projectile with Lateral Pulsejets in Atmospheric Flight |
NOV 2005 |
30 pages |
| Authors:
Bradley Burchett; Allen Peterson; Mark Costello; OREGON STATE UNIV CORVALLIS
|
| Using the linear theory for a dual-spin projectile in atmospheric flight closed form expressions were obtained for swerving motion under the action of lateral pulsejets. Trajectory results generated by the linear theory equations and a fully nonlinear seven degree-of-freedom dual-spin projectile model agreed favorably. The analytic solution provided a relatively straight forward and computationally efficient means of trajectory estimation which is useful within smart weapon flight control systems. In order ... |
|
| Getting to the Information you Already have |
05 OCT 2005 |
25 pages |
| Authors:
Vidya Rajaram; Simone Stumpf; Margaret Burnett; Anton Dragunov; Evelyn Wick; Juliana Lynn; Kevin Johnsrude; Jonathan Herlocker; OREGON STATE UNIV CORVALLIS
|
| 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 between these costs and users' choices between ways to access their local information. This paper provides a methodology for investigating ... |
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| Recovery from Interruptions: Knowledge Workers' Strategies, Failures and Envisioned Solutions |
03 OCT 2005 |
5 pages |
| Authors:
Simone Stumpf; Margaret Burnett; Thomas G. Dietterich; Kevin Johnsrude; Jonathan Herlocker; OREGON STATE UNIV CORVALLIS
|
| 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 findings will benefit researchers and designers in the area of task-centric applications, especially in the area of support for recovery ... |
|
| Calibration of Smart Weapon Motion Sensors for High-Speed Manufacturing Lines |
SEP 2005 |
32 pages |
| Authors:
Delvin Peterson; Mark Costello; OREGON STATE UNIV CORVALLIS
|
| Accelerometers and gyroscopes are used in many smart weapon sensor suites. If dominant sensor error sources such as misposition. bias. cross axis sensitivity, and scale factor can be quickly and efficiently identified and loaded onto the sensor suites, quality feedback can be achieved at significant cost savings. The work reported here describes a relatively simple sensor calibration device suitable for a high volume production line environment. It consists of a ... |
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| Control Authority of a Projectile Equipped With an Internal Unbalanced Part |
NOV 2004 |
60 pages |
| Authors:
Geoffrey W. Frost; Mark F. Costello; OREGON STATE UNIV CORVALLIS
|
| A key technical challenge for smart weapon developers is design of appropriate control mechanisms that provide sufficient control authority to enable correction of typical trajectory errors while not excessively burdening the overall weapon design. The work reported here considers a rotating mass unbalance control mechanism created by radial orientation of an internal part. To investigate the potential of this control mechanism, a seven degree-of- freedom flight dynamic model of a ... |
|
| Toward Optically Monitored Cytosensors |
17 MAY 2004 |
5 pages |
| Authors:
Philip N. McFadden; OREGON STATE UNIV CORVALLIS
|
| Fish scales display arrays of thousands of colored living cells known as chromatophores. In this study, the use of color changes in isolated lish scales was evaluated as a rapid warning signal for delayed neurotoxic agents. The focus was on detecting delayed effects of organophosphate nerve agents like sarin, though the less toxic diisopropylfluorophosphate (DFP) was used as a sirnulant. DFP caused rapid and long-lasting scale color changes. These signals ... |
|
| Right Whale Habitat and Migration in the Northwest Atlantic Ocean |
19 APR 2004 |
119 pages |
| Authors:
Bruce R. Mate; OREGON STATE UNIV CORVALLIS
|
| This study successfully used OSU-developed Argos implantable satellite-monitored radio tags to collect location data on large endangered whale species. These data were used determine feeding and migratory movements, and characterize critical habitats. Whales studied included Hawaiian humpback whales, Eastern North Pacific blue whales, North Atlantic right whales, Sea of Cortez fin whales, and Gulf of Mexico sperm whales. Oregon State University leads the field worldwide in tag longevity and reliability; ... |
|
| AUV-Based Measurements of Turbulence in the Oregon Coastal Ocean |
18 FEB 2004 |
7 pages |
| Authors:
Hemantha W. Wijesekera; Timothy J. Boyd; OREGON STATE UNIV CORVALLIS
|
| We have developed and tested a sensor payload section consisting of CTD, optics ADCP, and microstructure sensors for use with a Bluefin Robotics Odyssey III Autonomous Underwater Vehicle (AUV). We have deployed the AUV, including our payload section, from various platforms in a variety of weather conditions and sea states. |
|
| Low-Cost Deposition Methods for Transparent Thin-Film Transistors |
26 SEP 2003 |
188 pages |
| Authors:
Benjamin J. Norris; OREGON STATE UNIV CORVALLIS
|
| The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors "TTFTs". A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and polycrystalline thin-films. Optimal spin-coated ZnO thin-films are obtained for a 32 nm thick film which is converted to ZnO at ... |
|
| p-Type Transparent Electronics |
25 SEP 2003 |
95 pages |
| Authors:
Melinda M. Valencia; OREGON STATE UNIV CORVALLIS
|
| The objective of this thesis is to contribute to the development of p-type materials for transparent electronics applications. Thin films of ?-BaCu2S2, a p-type semi-transparent semiconductor, are fabricated and characterized. ?-BaCu2S2 has a transmittance of 60% to 80 % in the visible portion of the electromagnetic spectrum. The mobility, conductivity, and carrier concentration of ?-BaCu2S2 are 3.5 cm2/V-s 17 S/cm, and 1019 cm−3, respectively. The potential use of BaCu2S2 in ... |
|
| Spatial Variations of the Wave, Stress and Wind Fields in the Shoaling Zone |
02 SEP 2003 |
88 pages |
| Authors:
Larry Mahrt; OREGON STATE UNIV CORVALLIS
|
| Aircraft data collected at approximately 15 m above the sea surface in the coastal zone are analyzed to examine the spatial distribution of surface stress. Advection of stronger turbulence from land dominates the near-surface turbulence for the first few kilometers offshore. With offshore flow of warm air over cold water, strong stratification leads to very small surface stress. Because the stability restricts the momentum transfer to the waves, the aerodynamic ... |
|
| Energy Harvesting, Electrode Processes and the Partitioning and Speciation of Solid Phase Iron and Sulfur in Marine Sediments |
15 JUL 2003 |
4 pages |
| Authors:
Clare E. Reimers; OREGON STATE UNIV CORVALLIS
|
| Fuel cells that facilitate electrochemical reactions in the marine environment are under development as future long-term power sources for marine instrumentation. This research focused on anode processes and small-scale environmental impacts of fuel cells operated across sediment-water interfaces in laboratory microcosms and at coastal field sites. Sediment, pore water and electrode surface analyses indicated that electricity product ion is coupled to the oxidation of dissolved and solid-phase forms of reduced ... |
|
| A Demonstration of In-Situ Energy Harvesting for Low-Power Instrumentation in the Marine Environment |
MAR 2002 |
4 pages |
| Authors:
Clare E. Reimers; OREGON STATE UNIV CORVALLIS
|
| To demonstrate the generation of sustained electrical power from redox processes occurring on either side of the water-sediment interface in marine environments. To show a new form of power generation suited as a power source for long-term deployments of autonomous marine instrumentation requiring less than 1 Watt. |
|
| Turbulence off the Coast of Oregon: A Large-Eddy Simulation Study. Modeling of the Atmospheric Circulation in the Santa Barbara Channel |
10 DEC 2001 |
2 pages |
| Authors:
Eric D. Skyllingstad; Hemantha Wijesekera; OREGON STATE UNIV CORVALLIS
|
| Two projects were completed under this grant. The first project examined how coastal terrain interacts with prevailing winds along the southern California coastline. We determined that under northwest flow, wind fields followed a systematic pattern governed by basic hydraulic flow theory. Land surface heating disrupted this pattern during the night by forcing an offshore flow, thereby creating regions of weak winds over the Santa Barbara Channel. Our second project examined ... |
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| Spatial Variations of the Wave, Stress and Wind Fields in the Shoaling Zone |
17 SEP 2001 |
39 pages |
| Authors:
Larry Mahrt; OREGON STATE UNIV CORVALLIS
|
| We have used fast response atmospheric measurements from a small low- flying research aircraft, a tower at the end of a pier and offshore buoys to study air-sea interaction in the coastal zone. The research aircraft also measures the wave field using three downward pointing lasers. Our analysis of this data indicates that the influence of shoaling waves is significant but less important than originally thought. Nonetheless, computer models of ... |
|
| Maintenance Cycle Extension in Advanced Light Water Reactor Plant Design |
JUN 2001 |
|
| Authors:
Mark R. Galvin; OREGON STATE UNIV CORVALLIS
|
 | A renewed interest in new nuclear power generation in the United States has spurred interest in developing advanced reactors with features which will address the public's concerns regarding nuclear generation. However, it is economic performance which will dictate whether any new orders for these plants will materialize. Economic performance is, to a great extent, improved by maximizing the time that the plant is on-line generating electricity relative to the time ... |
|
| Dispersion Reduction of a Direct-Fire Rocket Using Lateral Pulse Jets |
APR 2001 |
41 pages |
| Authors:
Thanat Jitpraphai; Mark Costello; OREGON STATE UNIV CORVALLIS
|
| The impact point dispersion of a direct-fire rocket can be drastically reduced with a ring of appropriately sized lateral pulse jets coupled to a trajectory tracking flight control system% The system is shown to work well against uncertainty in the form of initial off-axis angular velocity perturbations as well as atmospheric winds. In an example case, dispersion was reduced by a factor of 100. Dispersion reduction is a strong function ... |
|
| Rapid Hydrographic, Optical and Microstructure Surveys on the Continental Shelf and Slope |
27 MAR 2001 |
6 pages |
| Authors:
John A. Barth; P. M. Kosro; OREGON STATE UNIV CORVALLIS
|
| As part of the Coastal Mixing and Optics Accelerated Research Initiative, measurements of density, light absorption/attenuation and microstructure were made using sensors mounted on a towed undulating platform. The sensor suite included a conductivity-temperature-depth instrument, a nine- wavelength spectral absorption and attenuation meter, and a new microstructure instrument. Surveys were conducted during August 1996 and April-May 1997 in the Middle Atlantic Bight near 40.5N, 70.5W Time-dependent maps of the three- ... |
|
| Machine Learning for Real-Time Decision Making |
12 MAR 2001 |
13 pages |
| Authors:
Thomas G. Dietterich; OREGON STATE UNIV CORVALLIS
|
| Many problems of interest to the Air Force involve routine sequential decision making under uncertainty. Examples include air traffic control, control of autonomous surveillance aircraft, logistics planning and scheduling, and equipment diagnosis and repair. These kinds of problems can be formulated within the framework of Markov Decision Problems (MDPs) and Partially-Observable Markov Decision Problems (POMDPs). Reinforcement Learning is the study of adaptive methods for solving large MDPs and POMDPs. The ... |
|
| The Prediction of Wind-Driven Coastal Circulation |
31 DEC 2000 |
6 pages |
| Authors:
J. S. Allen; J. A. Barthy; OREGON STATE UNIV CORVALLIS
|
| The objectives of this project are to understand the dynamics of, and to build a predictive capability for, wind-driven mesoscale oceanographic processes (2-50 km horizontal space scales, 2-10 day time scales) over the continental shelf. The project combines modeling, data assimilation and an observational program off Oregon. The observation program took place in summer 1999. It included surface current measurements from the OSU Coastal Radar System and sub-surface current measurements ... |
|
| Capturing Uncertainty in the Common Tactical/Environment Picture |
31 DEC 2000 |
2 pages |
| Authors:
Robert N. Miller; OREGON STATE UNIV CORVALLIS
|
| This contract supported my participation in the working group on the Capturing Uncertainty in the Common Tactical/Environmental Picture Department Research Initiative (DRI) . The goal of the working group was to hone the scientific focus of the DRI during a pilot period preceding the larger expert workshop which took place in October, 2000. The ultimate goal of the DRI is to develop a formalism for capturing, calculating and representing uncertainty. ... |
|
| Quantification and Characterization of the Absorption by Non- Phytoplankton Particulate Material |
12 DEC 2000 |
8 pages |
| Authors:
Michael Twardowski; Emmanuel Boss; OREGON STATE UNIV CORVALLIS
|
| Our objective in this effort was to determine the source(s) of tripton absorption and how this absorption affects the optical properties of seawater. Tripton is non-phytoplankton particulate matter. In work completed, no humic fluorescence signature has been observed in the particulate fraction. Additionally, a relatively high refractive index has been estimated for tripton, consistent with the hypothesis that a significant portion of tripton absorption may be derived from inorganic minerals. ... |
|
| Modeling and Simulation of a Differential Roll Projectile |
JUL 2000 |
50 pages |
| Authors:
Mark F. Costello; OREGON STATE UNIV CORVALLIS
|
| This report develops the equations of motion for a differential roll projectile configuration with seven degrees of freedom. The dynamic equations are generated generically such that the forward and aft components are mass unbalanced. A hydrodynamic bearing exists between the forward and aft components, which couples the roll degree of freedom. A simulation investigation shows that bearing resistance and forward/aft body mass ratio are the ... |
|
| Simulation of Two Projectiles Connected by a Flexible Tether |
JUL 2000 |
42 pages |
| Authors:
Mark F. Costello; Geoffrey W. Forst; OREGON STATE UNIV CORVALLIS
|
| This report investigates the atmospheric flight mechanics of two projectiles connected by a flexible tether. Both projectiles are individually modeled with six degrees of freedom. The projectile aerodynamic model depends on angle of attack and Mach number and includes unsteady roll, pitch, and yaw aerodynamic damping. The tether is split into a finite number, of beads, with each bead possessing three translation degrees of freedom. Forces ... |
|
| Two Projectiles Connected by a Flexible Tether Dropped in the Atmosphere |
JUL 2000 |
53 pages |
| Authors:
Geoffrey W. Frost; Mark F. Costello; OREGON STATE UNIV CORVALLIS
|
| This study investigates the atmospheric flight dynamics of a munition system that is released from an aircraft at altitude and drops toward a target on the ground. The munition system consists of two projectiles connected by a tether line. Initially, the two projectiles are rigidly attached. At a specified time, the projectiles separate and subsequently unreel the tether line. After the tether line is fully payed out, ... |
|
| A Digital X-Radiography System |
23 JUN 2000 |
3 pages |
| Authors:
Robert A. Wheatcroft; OREGON STATE UNIV CORVALLIS
|
| A state-of-the-art digital x-radiography system was assembled to assist in the quantitative analysis of marine sediments. The system comprises a constant potential x-ray source, an amorphous silicon digital x-ray detector, a high-end computer workstation and lead shielding. System performance is excellent with no loss of resolution compared to film. To date, the system has been used on two research cruises funded by ONR. Future plans ... |
|
| Nonlinear Shear Waves in the Surf Zone |
31 MAY 2000 |
3 pages |
| Authors:
John S. Allen; OREGON STATE UNIV CORVALLIS
|
| Funds from this grant have been used to provide Graduate Research Assistant (GRA) salary and tuition support for Jack A. Puleo (a U.S. citizen) over much of the period July 1996 to August 1996. Mr. Puleo started graduate studies in the College of Oceanic and Atmospheric Science, Oregon State University in July 1996 and graduated with an MS Degree in Oceanography in summer 1998. Results ... |
|
| Design, Fabrication, and Testing of a Portable Suction Pump |
APR 2000 |
80 pages |
| Authors:
Mark F. Costello; OREGON STATE UNIV CORVALLIS
|
| The objective of this project was to design and develop a lightweight, compact, effective, and easily operated medical suction pump for the Walter Reed Army Institute of Research. Current battlefield suction pumps are substandard in their performance; these commercially available, hand-powered suction pumps are large and have low durability, making them unsuitable for use in the field. Using initial design requirements provided by the military, ... |
|
| A New Heat Flux Formulation Based on Effective Surface Temperatures, With Extension to the Nocturnal Boundary Layer |
10 AUG 1999 |
9 pages |
| Authors:
Larry Mahrt; Jielun Sun; OREGON STATE UNIV CORVALLIS
|
| The state of the art concepts of the influence of surface heterogeneity on the atmospheric boundary layer are studied using several new data sets. This analysis shows that the internal boundary layer theory is valid only with sharp well defined surface changes. With more typical surface heterogeneity and with very stable conditions, the concept and models of the internal boundary layer do not apply. The concepts of the thermal roughness ... |
|
| Instrumentation for the Center for Cellular Mechanics |
01 JUN 1999 |
3 pages |
| Authors:
Philip N. McFadden; OREGON STATE UNIV CORVALLIS
|
| An integrated workstation for studying cellular mechanics has been installed for the purpose of educating students and conducting research on how information is mechanically processed in living cells. The integrated workstation consists of manipulator tools that can be used to probe living cellswith mechanical force while they are in the view of a microscope. The instrumentation is expected to enhance ONR funded research on cell-based biosensors by helping to establish ... |
|
| Toward Optically Monitored Cytosensors |
01 JUN 1999 |
|
| Authors:
Philip N. McFadden; OREGON STATE UNIV CORVALLIS
|
| A video microscopy system was set up to study optical changes in living biosensor cells in response to bioactive and neuroactive agents. The set of agents tested included both chemically defined toxic substances and regulators of cell activity, and undefined agents produced by microbes and by neuronal cells. It was clear that numerous agents can be detected by the changesthey cause in the optical appearance of biosensor cells. These results ... |
|
| A Map Enhancement for Terrain Visualization Under Night Vision Goggle Compatible Lighting Systems |
MAR 1999 |
43 pages |
| Authors:
Wiley C. Thompson; OREGON STATE UNIV CORVALLIS
|
| For the Army aviator, Night Vision Goggle (NVG) flight in the tactical rotary-wing profile is a very demanding, task saturated environment. Map navigation is just one of the many tasks that must be accomplished during flight. The dim, monochromatic lighting required for NVG flight alters map colors, decreases image detail and map feature contrast, often making terrain feature recognition more difficult. A cartographic analysis and resulting map enhancement is needed ... |
|
| Design Build Contracting in the Oregon Department of Transportation |
NOV 1998 |
65 pages |
| Authors:
Francisco O. Simas; OREGON STATE UNIV CORVALLIS
|
| This paper addresses the evaluation of ODOT's program to date, which includes their conceptual development of their design build program and presents feedback from industry regarding their first advertised design build project, The Williamette River Harrisburg Bridge Deck Replacement. The strategy for this evaluation effort included work in three main areas. First, a literature review into design build was undertaken to gain understanding of the method and it's proper use. ... |
|
| Hybrid Computational Models for Skill Acquisition |
27 AUG 1998 |
7 pages |
| Authors:
Thomas G. Dietterich; Prasad Tadepalli; OREGON STATE UNIV CORVALLIS
|
| The goal of this research was to develop a hybrid real time problem solving architecture that couples symbolic planning methods with connectionist reinforcement learning methods. The advantage of this hybrid architecture is that it can immediately achieve reasonable performance, because the symbolic planning system can quickly develop an acceptable control policy, but it can also gradually achieve optimal real time performance, because the reinforcement ... |
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Reports by Corporate Author
