Digital Commons Network^™

Theory Of Nothing, Adam Wieslaw Rupniewski

Dissertations and Theses

My work was presented in the form of an installation. Using three and two-dimensional objects, as well as sound and light, I created a site specific type of installation. Materials involved in this project were hydrostone, plaster, steel and copper. The sound I recorded on my steel sculptures in an acoustic space and then mixed to create sound compositions to amplify the feeling for the space. This installation reflects my pursuits in painting and sculpture, as well as my interest in music and light effects. Its philosophical and spiritual content were expressed through visual language, symbolic use of elements and …

Xanthones As Antimalarial Agents: Binding Interactions Between Heme Analogues And Xanthones, Jane Xu Kelly

Dissertations and Theses

Human falciparum malaria is caused by Plasmodium falciparum parasite, which digests host hemoglobin within its food vacuole, releasing toxic heme. P. falciparum detoxifies free heme to hemozoin by polymerization. This process is believed to be the target of most successful antimalarial drugs, chloroquine and quinine, which are now losing their effectiveness due to the spread of multi-drug resistant strains. Xanthones were recognized in the laboratory of Dr. M. Riscoe (Portland VA Medical Center) to bind to heme, preventing heme polymerization.

This thesis reports a study of the interactions of a potential antimalarial agent, 4,5-dihydroxyxanthone (X2), with heme and tin (IV) …

Putting The Region To Work: An Analysis Of Workforce Development Services In Multnomah And Washington Counties, Kim Burnett, Ray Jackson, Britt Parrott, Matt Ransom, Claire Smith

Master of Urban and Regional Planning Workshop Projects

This study was produced primarily as a tool for policy advocacy Workforce Development members therefore much of the analysis focuses on the role that community based organizations and community development corporations play in workforce development. However, policy makers and technical assistance providers, such as the Workforce Development Board, as well as government agencies, also play a critical role in the region’s workforce development system. Although this report does not focus as much on the role of these agencies, further study is needed to offer suggestions for how these players can best coordinate their efforts with that of community based organizations …

Adaptation Space: Surviving Non-Maskable Failures, Crispin Cowan, Lois Delcambre, Anne-Francoise Le Meur, Ling Liu, David Maier, Dylan Mcnamee, Michael Miller, Calton Pu, Perry Wagle, Jonathan Walpole

Computer Science Faculty Publications and Presentations

Some failures cannot be masked by redundancies, because an unanticipated situation occurred, because fault-tolerance measures were not adequate, or because there was a security breach (which is not amenable to replication). Applications that wish to continue to offer some service despite nonmaskable failure must adapt to the loss of resources. When numerous combinations of non-maskable failure modes are considered, the set of possible adaptations becomes complex. This paper presents adaptation spaces, a formalism for navigating among combinations of adaptations. An adaptation space describes a collection of possible adaptations of a software component or system, and provides a uniform way of …

Faculty Senate Monthly Packet April 1998, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The April 1998 Monthly packet includes the April agenda and appendices and the Faculty Senate minutes and attachments from the meeting held March 1998

The Selfish Book. Review Of: The Origins Of Virtue: Human Instincts And The Evolution Of Cooperation By Matt Ridley, Robert Costanza

Institute for Sustainable Solutions Publications and Presentations

Book Review of The Selfish Book. Review of: The Origins of Virtue: Human Instincts and the Evolution of Cooperation by Matt Ridley

Hermite–Sinusoidal-Gaussian Beams In Complex Optical Systems, Lee W. Casperson, Anthony A. Tovar

Electrical and Computer Engineering Faculty Publications and Presentations

Sinusoidal-Gaussian beams have recently been obtained as exact solutions of the paraxial wave equation for propagation in complex optical systems. Another useful set of beam solutions for Cartesian coordinate systems is based on Hermite–Gaussian functions. A generalization of these solution sets is developed here. The new solutions are referred to as Hermite–sinusoidal-Gaussian beams, because they are in the form of a product of Hermite-polynomial functions of either complex or real argument, sinusoidal functions of complex argument, and Gaussian functions of complex argument. These beams are valid for propagation through systems that can be represented in terms of complex beam matrices, …

Comparison Of Ice-Shelf Creep Flow Simulations With Ice-Front Motion Of Filchner-Ronne Ice Shelf, Antarctica, Detected By Sar Interferometry, Christina L. Hulbe, Eric Rignot, D. R. Macayeal

Geology Faculty Publications and Presentations

Comparison between numerical model ice-shelf flow simulations and synthetic aperture radar (SAR) interferograms is used to study ice-flow dynamics at the Hemmen Ice Rise (HIR) and Lassiter Coast (LC) corners of the iceberg-calving front of the Filchner-Ronne Ice Shelf, Antarctica. The interferograms are constructed from SAR images provided by the European Space Agency's remote-sensing satellites (ERS-lj2). Narrow bands of large shear strain rate are observed along the boundaries between fastflowing ice-shelf ice and no-flow boundaries. Large rifts, opened where the ice shelf separates from the coast, appear to be filled with a melange of sea ice, ice-shelf fragments, and snow. …

Ecological Tax Reform, Robert Costanza, Steve Bernow, Herman E. Daly, Robert Degennaro, Paul Hawken

Institute for Sustainable Solutions Publications and Presentations

Provides an overview detailing the benefits of ecological tax reform. What ecological tax reform would include; Origin of ecological taxes; Implementation in the United States and Europe; Specifics on an ecological tax reform proposal; The need to phase in tax reforms gradually.

Faculty Senate Monthly Packet March 1998, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The March 1998 Monthly packet includes the March agenda and appendices and the Faculty Senate minutes and attachments from the meeting held February 1998.

Field Solutions For Bidirectional High-Gain Laser Amplifiers And Oscillators, Lee W. Casperson, Mohammad Azadeh

Electrical and Computer Engineering Faculty Publications and Presentations

General analytical solutions are obtained for the amplitude, phase, and intensity of the electromagnetic waves in bidirectional homogeneously broadened high-gain laser amplifiers and oscillators. These solutions are important as increasingly high-gain lasers are being employed in practical systems. Expressions are derived relating the output power to the input, including the effects of arbitrary mirror reflectivities and frequency detunings from the line center. For negligible reflectivities, these regenerative amplifier results reduce to earlier expressions for single-pass high-gain amplifiers. Multivalued outputs also occur, and in the limit of low gain per pass the results are consistent with earlier studies of single-frequency laser …

Rudolf Steiner's Theory Of Foreign Language Learning, Michaela Wolf Hashitani

Dissertations and Theses

Rudolf Steiner is best known as the founder of the philosophical movement Anthroposophie and as the ideological father of Waldorf schools. The Waldorf school program follows Steiner's education principles in that it teaches children to explore their world with all senses. The goal of Waldorf education is to help children develop their soul and spirit in order to become a conscious, mature adult. Waldorf schools introduce two foreign languages at grade one in order to raise world-awareness in children and young adults.

This study reviews Steiner's biographic background until the opening of the first Waldorf school. It highlights Steiner's spiritual …

Faculty Senate Monthly Packet February 1998, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The February 1998 Monthly packet includes the February agenda and appendices and the Faculty Senate minutes and attachments from the meeting held January 1998.

Specific Heat And Critical Fields Of The Organic Superconductor Β″–(Bedt-Ttf)2sf5ch2cf2so3, S. Wanka, J. Hagel, D. Beckmanm, J. Wosnitza, J. A. Schlueter, Jack M. Williams, P. G. Nixon, Rolf Walter Winter, Gary L. Gard

Chemistry Faculty Publications and Presentations

We report on specific-heat, magnetization, and ac-susceptibility measurements of β″–(BEDT-TTF)₂SF₅CH₂CF₂SO₃, an organic superconductor with Tc=4.5 K, where BEDT-TTF stands for bis(ethylenedithio)-tetrathiafulvalene. The jump of the specific heat C at Tc and the exact form of the specific heat difference between C in the superconducting (B=0 T) and in the normal (B=3.5 T) state can be well described by BCS theory with strong coupling. We estimate an electron-phonon coupling parameter λ≈1.1. From measurements of C in magnetic fields we extract the upper critical field Bc₂(T). Low-field dc-magnetization measurements were used to determine the temperature dependence of the lower critical field Bc₁. …

The Surface Plasmon Enhancement Effect On Adsorbed Molecules At Elevated Temperatures, P.T. Leung, Hai-Pang Chiang, W. S. Tse

Physics Faculty Publications and Presentations

The surface plasmon enhancement effect on adsorbed molecules at elevated substrate temperatures is studied theoretically using surface enhanced Raman scattering (SERS) as an example. The surface structure is idealized to be a monodisperse spherical particle with its nonlocal dielectric response accounted for. The temperature effects are modeled using a temperature-dependent collision frequency in the Drude model. Numerical results show that only a small decrease in the SERS enhancement ratio occurs for temperatures up to the melting point of the substrate, even for scattering close to the surface plasmon resonance frequency of the metal. More definitive results are subjected to more …

Illegal Drug Use During Pregnancy: The Effects Of Defendant Race And Type Of Defense On Juror Judgments Of Guilt, Anita Rotondo

Dissertations and Theses

Since the early 1980s fetal harm "caused" by women's illegal drug use during pregnancy has garnered public attention and legal scrutiny. Motivated by concerns over fetal health, the cost of caring for drug-addicted infants, and public support for get tough on crime policies, various states have employed statutes on child abuse, neglect or endangerment, delivering a controlled substance to a minor and contributing to the delinquency of a minor to criminally inculpate maternal drug users.

Utilizing a written hypothetical trial summary in which a woman was charged with child abuse for using cocaine while pregnant, this research explored the effects …

Morphology, Eruption Rates, And Rheology Of Lava Domes: Insights From Laboratory Models, Jonathan H. Fink, Ross W. Griffiths

Geology Faculty Publications and Presentations

The growth of lava domes can be either quiescent or violent, with transitions between styles of behavior commonly occurring with little warning. Here we propose that the behavior depends on the eruption rate, the magma rheology, and the thickness ofthe cooling surface. We present a model, based on laboratory simulations, field measurements, and photographic analysis, that relates the morphology and texture of a dome to the thickness of its cooled carapace, and thence to eruption conditions. A sequence of four main types of dome (spiny, lobate, platy, and axisymmetric) is identified in laboratory analog experiments with a Bingham plastic. These …

University Studies 1994-1997: A Progress Report, Portland State University. General Education Working Group

University Studies Assessment Research

Broadly reports on the state of implementing University Studies, reviewing consequences for the University, faculty, and students.

Annual Faculty Senate Minutes October 1998 - June 1999, Portland State University Faculty Senate

Annual Compilations of the Faculty Senate Minutes (Minutes Only)

Minutes of the Faculty Senate for October 1998 to June 1999.

Bulletin: General Catalog Issue 1998-1999, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

Faculty Senate Monthly Packet January 1998, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The January 1998 Monthly packet includes the January agenda and appendices and the Faculty Senate minutes and attachments from the meeting held December 1997.

Phonological Processing Of Japanese Kanji Characters, Randy L. Evans

Dissertations and Theses

The purpose of this study was to investigate the lexical access of Japanese kanji characters, particularly the access of on-readings and kun-readings, which are different pronunciations that kanji may realize in different contexts. A modified Stroop experiment was used, using drawings instead of colors, in which subjects were to call out what they saw in the drawings while ignoring written distractors. The following three conditions were used:

1. A Kunyomi condition, which offered a distractor that is graphically and phonologically identical to the character that represents the object in the drawing,

2. An Onyomi condition, which offered a distractor that …

Filtration Modeling Of A Plate-And-Frame Press, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

The porosity distribution and filtrate production during cake filtration in a plate-and-frame filter press were simulated mathematically. The model considered filtration that occurs after the filling process, not filtration that occurs as the suspension fills the cell. Governing equations for the temporal porosity distribution were developed for a plateand- frame press. The governing equations were solved numerically using an alternating-direction-implicit scheme. Appropriate initial and boundary conditions were determined based on characteristics of the plate-and-frame press and of the suspension properties. Predicted porosity and velocity distributions were calculated for assumed constitutive parameters.

Modeling Density Currents In Circular Clarifiers, Scott A. Wells, David M. Laliberte

Civil and Environmental Engineering Faculty Publications and Presentations

Design of sedimentation tanks for solid-liquid separation is often dependent on assuming ideal flow conditions. But the geometry of the tank and density currents as a result of temperature and suspended solids influences the fluid mechanics of the tank and can result in significant deviations from ideal flow.

A two-dimensional radial flow model was proposed which incorporated the effect of density currents resulting from temperature and suspended solids differentials within the tank. The numerical model predicted the steady-state, layer-averaged radial flow and layer depth.

The model solution and field data showed that the momentum and suspended solids of the inflow …

Few-Cycle Pulses In Two-Level Media, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

Techniques for producing, measuring, and applying ever shorter electromagnetic pulses are being developed for incorporation in a variety of modern high-speed systems. In many cases these pulses are at most a few cycles in length, and so-called half-cycle electromagnetic pulses are also widely employed. The interaction of such pulses with two-level media is considered here in detail, and these media are basic to many of the absorbing and amplifying configurations of optics and laser studies. Significant delays and distortion of the resulting polarization and population pulses can occur, and nonlinear optical effects are also revealed. The limitations of the parity, …

An Evaluation Of A Staff Mentor Program For At-Risk Students In An Oregon High School: Cake (Caring About Kids Effectively), Gail Lenore Hayes

Dissertations and Theses

This study examined the effect of a staff-mentoring program with students identified as at-risk of becoming early leavers. This mentoring program, Caring About Kids Effectively (CAKE), was implemented at a suburban secondary school in Oregon serving grades 9 through 12.

The study of the CAKE program had four research components: (a) indicators of school success (GPA, attendance, and attitudes toward school) were compared between at-risk students and those not at-risk; (b) indicators of school success were analyzed over the time at-risk students were mentored to find any significant change; (c) indicators of school success and enrollment status at graduation was …

Paramagnetic Nuclear Magnetic Resonance (Nmr) Studies On The Calcium Binding Site Of [Alpha]-Lactalbumin, Thomas Kurt Ritter

Dissertations and Theses

Paramagnetic NMR has drawn interest as a technique for extending the range of systems that can be investigated. The purpose of this study was to determine whether a combination of paramagnetic two-dimensional and relaxation techniques allows for assigning resonances corresponding to residues forming the metal binding site of proteins in which the metal is coordinated exclusively by amino acid side chains and which have been previously inaccessible to assignment.

α-Lactalbumin (LA) is a calcium binding protein with relatively broad NMR signals; this broadness has prevented complete assignment. LA has been the subject of many studies, because it can form a …

Surface Studies Of Metals After Interaction With Hydrogen Isotopes, David Samuel Silver

Dissertations and Theses

The objective of this research is to characterize surfaces of metals after interaction with hydrogen isotopes. Iron, which does not readily bond with hydrogen, and palladium, which strongly bonds with hydrogen, were studied. Observations of surfaces are used to determine the nature of their metamorphosis due to such exposures. An experimental study of pure iron foil (99.99%) exposed to a hot, dense hydrogen and argon gas mixture in a ballistic compressor yielded evidence for new structural and compositional changes of the metal due to the exposure. Atomic force microscope (AFM) studies demonstrated surfaces to be highly uneven, where height variations …

The Green Dyadic Formulation For Radiation Problems With Arbitrary Sources Embedded In Stratified Multi-Layer Structures : Application To Molecular Fluorescence Problems, Robert Lyle Hartman

Dissertations and Theses

The Green Dyadic method for computing fields due to current sources between parallel interfaces of dielectric materials is studied. Computer implementation of the method as presented in a well-known article leads to the conclusion that significant errors are present. Two dissimilar methods of solution lead to corrected formulations which are shown to be equivalent. The same correction is found in the research literature. For confirmation, computations are performed in examples involving an emitting dipole by both the Green dyadic method and Sommerfeld' s Hertz vector method. Finally, the computational examples are used to compute fluorescence decay rates for emitting dipoles …

Communicating Conceptual Design Of Mechatronic Systems, Muir Lee Harding

Dissertations and Theses

Today's engineering designers must adapt to a changing model of product development. In the past, a single engineer could design, develop and deploy competitive systems --this is often no longer the case. Designing a mechanical system with integrated microprocessor control requires the collaboration of a cross-disciplinary team of engineers and, in many cases, no single member of the team understands the workings of the entire system. Consequently, as systems become increasingly complex, the ability to collaborate and reliably communicate design information becomes more and more crucial. Effective communication 1s particularly critical in conceptual design, where a poor decision has the …