Digital Commons Network^™

The Missing Link: An Evaluation Of Carsharing Portland Inc. Portland, Oregon, Gigi Cooper, Deborah A. Howe, Peter Mye

Master of Urban and Regional Planning Workshop Projects

Often heard in the mass media and at cocktail parties is that Americans have a love affair with their automobiles. While it may be true that many Americans do love their cars, it is equally true that what they love most about them is the instant mobility that they provide. Car sharing is a concept that addresses the reality ofour need and desire for mobility with a growing desire to be economically and environmentally sensitive and sensible. Car sharing provides access to automobiles without the costs associated with ownership.

The purpose of this project is to evaluate the impacts of …

A Primer On Gis-T Databases, J. Allison Butler, Kenneth Dueker

Center for Urban Studies Publications and Reports

This paper describes the primary database design approaches that have been and are being used in geographic information system applications for transportation (GIS-T). While not intending to be exhaustive, the paper covers the primary approaches used in federal, state, and local transportation agencies.

The Kenton Connection: Establishing A Route Between Kenton And The 40-Mile Loop Trail, Mindy Correll, Katrina Hardt, Kimberly Parsons, Art Pearce, Carolyn Sharp

Master of Urban and Regional Planning Workshop Projects

The Kenton Connection is a proposed trail in the North Portland neighborhood of Kenton, connecting the future Interstate MAX light rail station in downtown Kenton to the 40-Mile Loop.

Confluence Consulting worked with a five member advisory committee, with members from Portland agencies and organizations, to assist in developing trail route alternatives. Confluence Consulting also conducted public outreach and education in the Kenton neighborhood to assess residents' preferences on route alignments and trailside amenities. Additionally, businesses and industries in the area were contacted and queried about their concerns and preferences for a connection.

Meeting Notes 2000-02-10 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

International Environmental Regimes And Latin America: The Role Of Environmental Non-Governmental Organizations, Jennifer T. Eller

Dissertations and Theses

This study analyzes the obstacles to environmental policymaking in Latin America such as the poverty crisis, the North/South conflict and political corruption. These obstacles result in weak government institutions and create an opportunity for other actors to wield greater influence in the policymaking process.

This paper evaluates the effectiveness of environmental agreements such as debt-for-nature swaps. Debt-for-nature swaps emerged as a solution to the conundrum of the debt crisis and environmental degradation. The cases of Bolivia, Costa Rica and Ecuador illustrate the tensions between development and environmental degradation. The most important lesson learned from these swaps is that the support …

Infofilter: Supporting Quality Of Service For Fresh Information Delivery, Ling Liu, Calton Pu, Karsten Schwan, Jonathan Walpole

Computer Science Faculty Publications and Presentations

With the explosive growth of the Internet and World Wide Web comes a dramatic increase in the number of users that compete for the shared resources of distributed system environments. Most implementations of application servers and distributed search software do not distinguish among requests to different web pages. This has the implication that the behavior of application servers is quite unpredictable. Applications that require timely delivery of fresh information consequently suffer the most in such competitive environments. This paper presents a model of quality of service (QoS) and the design of a QoS-enabled information delivery system that implements such a …

Economic Impact Of Standard Reference Materials For Sulfur In Fossil Fuels, Sheila A. Martin, Michael P. Gallaher, Alan C. O'Connor

Institute of Metropolitan Studies Publications

The National Institute of Standards and Technology (NIST) promotes U.S. economic growth by working with industry to develop and apply technology, measurements, and standards. Through its Office of Standard Reference Materials, NIST is authorized to certify and sell standard reference materials (SRMs) that help users engaged in commerce or research link their measurements to NIST. Developed by NIST’s Technical Laboratories, SRMs are materials certified for their chemical composition or physical properties. As emerging regulations increase the importance of the sulfur content of fossil fuels, NIST is expanding its SRM program to include SRMs for measuring sulfur in the low-sulfur fuels …

Managing Our Environmental Portfolio, Robert Costanza, Herman E. Daly, Carl Folke, Paul Hawken, C. S. Holling, A. J. Mcmichael, David Pimentel, David Rapport

Institute for Sustainable Solutions Publications and Presentations

No set of issues has tended to separate economists and ecologists, especially in the mind of the public, more than those surrounding the linkages between economic growth, human carrying capacity, and the environment. The general lack of interest among the majority of economists in problems of the environment and a parallel lack of interest among the majority of ecologists in economic issues, combined with a lack of dialogue between the two groups, has allowed extreme positions to take hold in the public debate and to influence policy to an inordinate degree.

The Effect Of Using Averaged Versus Custom Real-Ear To Coupler Difference Values In The Desired Sensation Level Approach To Prescribing Hearing Instrument Gain, John Aaron Coverstone

Dissertations and Theses

Because there are many variables and much missing information when fitting young children with hearing instruments, it is necessary to rely on prescriptive procedures such as the Desired Sensation Level (DSL) Method to create target 2cc gain values for ordering and fitting hearing instruments. Inherent in creating 2cc targets is a conversion process known as a real-ear to coupler difference (RECD) measurement. The DSL algorithms make allowances for averaged data to be used in lieu of this measurement.

The purpose of this study is to evaluate the validity of using averaged real-ear to coupler difference values included in the DSL …

Meeting Notes 2000-01-13 [Part D] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Meeting Notes 2000-01-13 [Part B] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Meeting Notes 2000-01-13 [Part C] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Meeting Notes 2000-01-13 [Part E] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Portland Downtown Plan (2), Ernest Bonner

Ernie Bonner Collection

No abstract provided.

Documentary Proposal (Budget), Ernest Bonner

Ernie Bonner Collection

No abstract provided.

Portland Downtown Plan (1), Ernest Bonner

Ernie Bonner Collection

No abstract provided.

Effect Of Oregon's Axle-Weight-Distance Tax Incentive, Anthony M. Rufolo, Lois M. Bronfman, Eric Kuhner

Center for Urban Studies Publications and Reports

Oregon s weight-mile tax was amended in 1990 to provide for a lower tax rate for trucks weighing more than 80,000 pounds if they added axles. The additional axles within a weight class reduce the amount of road damage. The tax break was largely based on equity considerations, since trucks within a weight class tend to do less road damage if they have more axles; however, the tax reductions also created an economic incentive to add axles and thus reduce road damage. This article is a report on attempts to determine if the tax break actually led to an increase …

Annual Faculty Senate Minutes October 2000 - June 2001, Portland State University Faculty Senate

Annual Compilations of the Faculty Senate Minutes (Minutes Only)

Minutes of the Faculty Senate for October 2000 to June 2001.

Improved Regression-Based Streamflow Forecasting Considering Large-Scale Climate Variability, Austin R. Fisher

Dissertations and Theses

The Natural Resources Conservation Service (NRCS) produces water supply forecasts for most of the streams in the western United States. The NRCS produces forecasts starting in January, when snow course measurements of snow water equivalent were available. Although the seasonal streamflow volume forecasts made by the NRCS are useful, many water supply managers need information at the beginning of the water year in October and would like to see forecasts in the form of a monthly hydrograph.

An investigation into the effect of decadal scale variability, as reflected by the Pacific Decadal Oscillation (PDO), show important relationships that may be …

The Long-Term Viability Of A Zero-Valent Iron Permeable Reactive Barrier, Stuart Cowburn

Dissertations and Theses

Zero-valent iron permeable reactive barriers (PRB's) hold significant potential as a tool for groundwater remediation. Uncertainties remain, however, as to the effective lifetime of Fe⁰ barrier technology under full-scale operational conditions. Potential limits on barrier lifetime include reductions in permeability due to clogging by precipitates and oxidation of all Fe⁰ prior to the exhaustion of the contaminant source.

A 46 m long, 0.6 m wide, and 7.3 m deep Fe⁰ PRB was installed at the US Coast Guard Support Center, Elizabeth City, NC, in June 1996. The barrier was designed to remediate groundwater principally contaminated with Cr(VI) …

Faculty Senate Monthly Packet January 2000, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The January 2000 Monthly packet includes the January agenda and appendices and the Faculty Senate minutes and attachments from the meeting held December 1999.

Profiles Of The Highly Invasive Plants In Oregon Including Lists Of Oregon’S Invasive And Naturalized Plants, Rebekah Jane Harper

Dissertations and Theses

The study and control of invasive species are important issues in restoration ecology and land management. Invasive species are among the top contributors to habitat degradation worldwide. Unfortunately, information concerning invasive species and methods for their control is limited and widely scattered throughout the literature.

A comprehensive list of the naturalized and invasive species found in Oregon is important for monitoring invasive and potentially invasive species. It also provides a base of information for people interested in investigating invasive species; however, no such state-wide list existed for Oregon before this work.

Profiles for highly invasive species should provide information concerning …

Bulletin: General Catalog Issue 2000-2001, Portland State University

Bulletin & Curriculum Change Documents

No abstract provided.

Variation Of Constitutive Model Formulation On Analytical Cake Filtration Models, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

Constitutive properties are required to model porosity, effective stress, porewater pressure, or permeability during cake filtration. By using an analytical cake filtration model based on Tiller (1975) with various constitutive property formulations, predictions of effective stress, permeability, and porosity distributions in a filter cake can be made. This analytical approach was only valid when spatially average values of porosity and pressure differential were constant over time. Several different constitutive property formulations were compared to data of effective stress and permeability as a function of porosity for kaolin clay in water. Also the spatial distribution of porosity in a filter cake …

Multigrid For The Mortar Finite Element Method, Jay Gopalakrishnan, Joseph E. Pasciak

Mathematics and Statistics Faculty Publications and Presentations

A multigrid technique for uniformly preconditioning linear systems arising from a mortar finite element discretization of second order elliptic boundary value problems is described and analyzed. These problems are posed on domains partitioned into subdomains, each of which is independently triangulated in a multilevel fashion. The multilevel mortar finite element spaces based on such triangulations (which need not align across subdomain interfaces) are in general not nested. Suitable grid transfer operators and smoothers are developed which lead to a variable Vcycle preconditioner resulting in a uniformly preconditioned algebraic system. Computational results illustrating the theory are also presented.

Ce-Qual-W2 Version 3: Hydrodynamic And Water Quality River Basin Modeling, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

CE-QUAL-W2 is a two-dimensional (longitudinal-vertical) water quality and hydrodynamic computer simulation model that was originally developed for deep, long, and narrow waterbodies. The current model, Version 2, has been used in over 200 river, reservoir/lake, and estuary applications throughout the U.S. and abroad. Version 2, though, cannot accommodate systems that have a significant sloping water surface since the vertical coordinate system is aligned with gravity and vertical accelerations are neglected. The governing equations for CE-QUAL-W2 were re-derived so that it could be applied to entire river basins including river-estuary, lake-river, and reservoir-river systems with channel slopes. This re-derivation is one …

Intelligent Safety And Driver Assistance Systems For Heavy Duty Trucks, Volkmar Gross, Ziad Keirouz

Engineering and Technology Management Student Projects

Preface:

The number of commercial vehicles (trucks) on the U.S. Highways will continue to growth by an average annual ra!e of approximately 10% over the next 3 to 5 years. Along with the predicted increased movement of goods due to the ecommerce revolution, accidents (and death rates) involving commercial trucks are on the rise. In the following, we will investigate the future of Intelligent Safety and Driver Assistance Systems, designed to increase the overall safety of commercial vehicles, in the wake of augmented national and government interest in these technologies. We will concentrate on vehicle-based rather than infrastructure- based technologies. …

Portland State Magazine, Portland State University. Office Of University Communications

Portland State Magazine

PSU’s alumni magazine, published 2-3 times a year. In this issue: It was a deal made in cyberspace for this Web entrepreneur and PSU students; Gen. Colin Powell has designated PSU and University of Promise—a role that President Dan Bernstine takes to heart; the 2000 census is coming, and we better be ready; it’s almost always a blast when students in the Aerospace Society get together; needed: teachers fluent in English and another language for Oregon’s growing immigrant population; and more.

Meeting Agenda October 2000 - June 2005, Portland State University Faculty Senate

Faculty Senate Meeting Agenda Compilations (Five Year)

Meeting agendas of the Faculty Senate for October 2000 to June 2005.

Survey Of Aquatic Plants In Corps Of Engineers Reservoirs, Kimberly D. Walker, Mark D. Sytsma

Center for Lakes and Reservoirs Publications and Presentations

A survey of aquatic plants in a selected Corps of Engineers reservoirs in Oregon was conducted. Cottage Grove, Dorena, Fern Ridge, Dexter and Willow Creek Reservoirs contained abundant aquatic plants. Potamogeton pectinatus and Potamogeton epihydrous were the most common native plant species. Myriophyllum aquaticum and Potamogeton crispus were the most widespread nonnative plants. Species richness in the reservoirs was correlated with trophic status and basin morphology. Shallow reservoirs that included extensive areas of nutrient-rich sediments that were historic flood plain soils supported the greatest biomass and number of species. Mesotrophic reservoirs had lower species diversity. Oligotrophic reservoirs with steep basin …