Digital Commons Network^™

Travel And Parking Behavior In The United States, Gerard C. Mildner, James G. Strathman, Martha J. Bianco

Center for Urban Studies Publications and Reports

This paper looks at the connection between the regulation of parking by cities, transit service levels, and travel and parking behavior in the United States. Travel behavior information comes from the 1990 Nationwide Personal Transportation Survey (NPTS) and the Federal Urban Mass Transportation Administration’s 1990 Section 15 Report. Data on the current state of parking programs in place in central business districts of the U.S. is identified through telephone interviews of local officials responsible for parking policies from the twenty cities identified in the NPTS. The travel behavior analyses and the data from the parking officials interviews were combined with …

A Specialization Toolkit To Increase The Diversity Of Operating Systems, Calton Pu, Andrew P. Black, Crispin Cowan, Jonathan Walpole, Charles Consel

Computer Science Faculty Publications and Presentations

Virus and worm attacks that exploit system implementation details can be countered with a diversified set of implementations. Furthermore, immune systems show that attacks from previously unknown organisms require effective dynamic response. In the Synthetix project, we have been developing a specialization toolkit to improve the performance of operating system kernels. The toolkit helps programmers generate and manage diverse specialized implementations of software modules. The Tempo-C specializer tool generates different versions for both compile-time and run-time specialization. We are now adapting the toolkit to improve operating system survivability against implementations attacks.

Parking Regulation And Land Use In The Portland Metropolitan Region: A Case For Local Parking Districts And Shared Parking Arrangements, Eric Engstrom

Center for Urban Studies Publications and Reports

The purpose of this paper is to examine parking regulations and parking management in a land-use and transportation planning context. Current parking management policies in the Portland metropolitan region provide the overall framework for this analysis. The paper is divided into six sections:

• Section one provides a summary of the planning policies and growth management strategies of the Portland metropolitan region which impact par king policy. These policies provide the context for the current discussion of parking regulations in the region.

• The experiences of two close-in Portland neighborhoods are discussed in section two. Parking is not regulated by …

Analysis And Optimization Of A Banyan Based Atm Switch By Simulations, Syed Sohel Hussain

Dissertations and Theses

Asynchronous Transfer Mode (ATM) is proposed technology to create a broadband (high speed) packet switching network capable of transporting wide variety of services including voice, video and data in an integrated manner. The main concern in designing the switching fabrics used in this technology are speed, throughput, delay and variance of delay. We analyze the performance by simulations of ATM switch based on Banyan network in the uniform traffic condition.

We compare the analytical results obtained from three-state model Yan and Jenq to the simulation results. Based on observation of simulation results, we propose non-blocking first stage (NBFS) to increase …

Meeting Notes 1996-11-14 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Demodulation Of Narrowband Radio Frequency Signals By Aliasing Sampling, Chun-Ching Lin

Dissertations and Theses

The objective of this thesis is to study the demodulation of narrowband radio frequency signals by aliasing sampling in order to reduce the sampling rate. The spectrum can be recreated at the lower frequency position by aliasing sampling. However, if the sampling rate is deviated from the desired one, error will occur. The sensitivity to the frequency error of aliasing sampling is studied.

One main reason of the deviation of the sampling rate is the frequency drifting of the local oscillator. Being able to compensate the oscillator drifting errors inexpensively, automatic frequency control (AFC) loops are important at receivers. Two …

Faculty Senate Monthly Packet November 1996, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The November 1996 Monthly packet includes the November agenda and appendices and the Faculty Senate minutes and attachments from the meeting held October 1996.

The Portland Region: Where City And Suburbs Talk To Each Other ... And Sometimes Agree, Carl Abbott

Urban Studies and Planning Faculty Publications and Presentations

Portland, OR, is often cited as an example of successful regional governance and planning. The metropolitan area appears to match many of the precepts of the popular "compact city" model of urban growth and to demonstrate the capacity of local and state government to shape growing metropolitan regions. Given this reputation, it is important to evaluate the relevance of the Portland experience for other communities, distinguishing unique local circumstances form generalizable characteristics. This analysis explores the spatial character of metropolitan Portland in the 1990s, summarizes the politics of regional planning, examines weaknesses in the Portland approach, and offers suggestions for …

Multimedia Applications Require Adaptive Cpu Scheduling, Veronica Baiceanu, Crispin Cowan, Dylan Mcnamee, Calton Pu, Jonathan Walpole

Computer Science Faculty Publications and Presentations

CPU scheduling and admission testing for multimedia applications have been extensively studied, and various solutions have been proposed using assorted simplifying assumptions. However, we believe that the complexity and dynamic behavior of multimedia applications and systems make static solutions hard to apply in real-world situations. We are analyzing the difficulties that arise when applying the rate-monotonic (RM) scheduling algorithm and the corresponding admission tests for CPU management, in the context of real multimedia applications running on real systems. RM requires statically predictable, periodic workloads, and while multimedia applications appear to be periodic, in practice they exhibit numerous variabilities in workload. …

Generalized Beam Matrices. Iii. Application To Diffraction Analysis, Lee W. Casperson, Anthony A. Tovar

Electrical and Computer Engineering Faculty Publications and Presentations

In analogy with Huygen’s wavelets a new method based on Gaussian beamlets is used to develop a conventional diffraction integral formalism for paraxial optical systems representable by complex 2×2 ABCD Gaussian beam matrices. This method, along with a new phase parameter transformation, is then used to produce a new diffraction integral for studying the propagation of light beams with arbitrary spatial profiles through much more general misaligned complex optical systems representable by 3×3 ABCDGH beam matrices.

Effective And Appropriate Use Of Controlled Experimentation In Software Development Research, Mark Alan Johnson

Dissertations and Theses

Although there is a large body of research and publication on software development, only a limited amount of this work includes empirical demonstration of its effectiveness. Yet, it is this empirical understanding which will help move software development from a craft to an engineering discipline. Of the empirical methods for research, controlled experiments are the most commonly thought of in scientific studies, and yet the least used to study software development.

This thesis begins with a brief review of the different empirical methods commonly used to study software development. This review provides a quick introduction to each empirical method, compares …

Adaptive Color Correlation Of Knots In Wood Images And Weighted-Value Product Selection Methods In A Machine Vision System, John Robert Goulding

Dissertations and Theses

The biggest obstacle to robust color image processing of wood is in developing a color model that represents all possible defect colors. When the color model is too general or too specific, defect recognition fails because too many or too few non-defect pixels match the model, respectively. Because a color image of wood contains far more clear and clear-grain colored pixels than grain-knot and knot colored pixels, it is beneficial to first statistically identify and remove the clear and clear-grain colors and to use the accumulated data to simultaneously enhance and normalize the remaining grainknot and knot colored pixels. This …

Design Of A Second-Order Filter Using The GM-C Technique, Girish Chandrasekaran

Dissertations and Theses

This thesis deals with the design, layout, fabrication, testing and characterization of a second-order filter (biquad) using the transconductance-C (g_m-C) technique. The biquad was designed to realize the four filter functions - lowpass, highpass, bandpass and notch - by appropriate choice of input and output terminals and element values. The tunable range of frequencies for the biquad was designed to be 18-59MHz. The quality factor of the biquad was designed to be tunable from approximately 1/3 to 3. The filter was designed in LEVEL2 SPICE, laid out using MAGIC, and the circuit was fabricated using MOSIS's …

Meeting Notes 1996-10-10 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Eco-Industrial Parks: A Case Study And Analysis Of Economic, Environmental, Technical, And Regulatory Issues, Sheila A. Martin, Keith A. Weitz, Robert A. Cushman, Aarti Sharma, Richard C. Lindrooth, Stephen R. Moran

Institute of Metropolitan Studies Publications

Despite a growing interest in and awareness of applications of industrial ecology (IE), such as eco-industrial parks (EIPs), little information is available about the potential economic and environmental benefits of EIPs, the process for successful EIP development, the important regulatory issues surrounding EIPs, or the technologies needed to support them. This report contains the results of a body of research intended to investigate and support the development of EIPs—communities of companies modeled after industrial ecosystems. EIPs can exist within defined boundaries and broader industrial ecosystems in a region. These communities consciously collaborate to enhance their economic performance through improved environmental …

Faculty Senate Monthly Packet October 1996, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The October 1996 Monthly packet includes the October agenda and appendices and the Faculty Senate minutes and attachments from the meeting held June 1996.

Impact Of Groundwater Contamination In East Multnomah County On The Interlachen Community, Scott A. Wells, Shuguang Li, Marvin Beeson, Michael L. Cummings, Richard Pratt, Robert Leslie Annear, Karann Brandt

Civil and Environmental Engineering Faculty Publications and Presentations

The Friends of Blue and Fairview Lake through the Environmental Protection Agency (EPA) Technical Assistance Grant (TAG) program contracted with Portland State University faculty and staff to provide an independent review of the groundwater contamination problem at the Boeing-Cascade site in East Multnomah County. An independent consultant, Karann Brandt, of PRC Environmental Management, Inc., was also assisting the panel with the review.

The region of groundwater contamination is a 2.5 square mile region bounded by NE Halsey Blvd. to the Columbia River and NE 178th to NE 223rd (see Figure 1). The groundwater contamination is primarily of volatile organic compounds …

Under Construction: Building A Livable Future, Tri-County Metropolitan Transportation District Of Oregon

TriMet Collection

No abstract provided.

Beyond The Field Of Dreams: Light Rail And Growth Management In Portland, G. B. Arrington Jr., Tri-County Metropolitan Transportation District Of Oregon

TriMet Collection

No abstract provided.

Thinking About Cities: The Central Tradition In U.S. Urban History, Carl Abbott

Urban Studies and Planning Faculty Publications and Presentations

Urban history in United States in the last 150 years has been concerned with two central questions. Historians of three generations focused on the process of urbanization and the problem of civic order in the cities. The historians of recent times emphasize on community formation as the determinant of economic growth and its general effect. Earlier scholars discussed the creation of communities and institutions and the correlation between urban and national development. Thus, interaction between city and citizen is a viable theme of urban history.

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: After a decade and a half without men’s basketball, the team is back playing Division I in the Big Sky Conference; as the high-tech industry in Oregon prospers, higher education is looking to catch up; an entire graduate program, including faculty and students, has moved from Lewis & Clark to PSU; Jim Aalberg ’72 left the mergers, downsizing, and buyouts of the banking industry to join Fred Meyer Inc.; Portland Public Schools may open its first new grade school in more than 20 years on PSU’s campus; and more.

Neotraditional Design: Resisting The Decentralizing Forces Of New Spatial Technologies, Kenneth Dueker, Martha J. Bianco

Center for Urban Studies Publications and Reports

The New Urbanist, or Neotraditional, movement that has characterized urban planning since the beginning of the 1990s has a vision of how people should live, work, and travel in a manner that, planners believe, will be "best" for society and for the environment. At the core of this vision is the notion that a return to the high densities, architectural form, and lifestyle of the period prior to World War II will result in a better society. A question that is ignored by the neotraditional proposals is the extent to which changing technologies might make calls for higher densities obsolete. …

Design And Implementation Of A Model For Authoring And Presenting Interactive Multimedia Documents, Vibha Mukul Nayyar

Dissertations and Theses

Multimedia technology enables direct manipulation of multiple media such as text, image, audio, and video, all integrated into one entity - the multimedia document. Interactive multimedia documents integrate text, images and continuous media such as audio and video, treat them as objects to be presented for a certain duration, and allow users to interact with the presentation. Authoring and presenting interactive multimedia documents imposes new requirements on document representation. We designed the interactive timeline model (ITM) for authoring and presenting interactive multimedia documents. We implemented the model and created a playback tool using the scripting language Tcl.

ITM uses an …

Meeting Notes 1996-08 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Rain, Eco-Net

RAIN: Journal of Appropriate Technology

Volume 15, Number 1

Inside: People Power; Community Healthcare; Berlin Carsharing Interviews; Building for Pedestrians. Scanned from print copy loaned by Tom Bender

RAIN began in October 1974 as a publication of ECO-NET, an environmental education network funded by the Hill Foundation and an Environmental Education grant. Its office was based in the Environmental Education Center at Portland State University. With a focus on the Pacific Northwest, particularly Oregon, RAIN originally described itself as a “bulletin board” with an “emphasis on environmental/energy related and communications kinds of information” and interested in “the evolutionary possibilities of inter-disciplinary connections.”

Science In Environmental Conflicts, Connie P. Ozawa

Urban Studies and Planning Faculty Publications and Presentations

Science plays a major part in environmental conflict. How that role is defined is determined by the human actors engaged in the conflict and the legal and institutional constructs that structure discourse. This article begins by tracing the authority invested in science to ideological assumptions about scientific methodology. Then, four common roles for science in environmental conflict (discoverer, mechanism of accountability, shield, and toql of persuasion), are described. These roles are increasingly unproductive in resolving environmental conflict, partly due to the misfit between the actual conduct of science and its ideal. This article proposes that a new role, one that …

Scattering Properties Of Dense Media From Monte Carlo Simulations With Application To Active Remote Sensing Of Snow, Lisa M. Zurk, L. Tsang, Dale P. Winebrenner

Electrical and Computer Engineering Faculty Publications and Presentations

Monte Carlo simulations are used to derive the phase matrix, effective permittivity, and scattering coefficient for a random medium consisting of densely packed spheres up to 5000 in number. The results include correlated scattering and coherent wave interaction among the scatterers. The Monte Carlo simulations are based on a multiple-scattering formulation of the Foldy-Lax equations. It is shown that the derived phase matrix is in good agreement with dense media radiative transfer theory for copolarized scattering. The depolarization, however, can be substantially larger than conventional theory. Two methods are used to analyze the behavior of the coherent wave to obtain …

Drug Delivery With Microsecond Laser Pulses Into Gelatin, Hanqun Shangguan, Lee W. Casperson, Alan Shearin, Kenton W. Gregory, Scott A. Prahl

Electrical and Computer Engineering Faculty Publications and Presentations

Photo acoustic drug delivery is a technique for localized drug delivery by laser-induced hydrodynamic pressure following cavitation bubble expansion and collapse. Photoacoustic drug delivery was investigated on gelatin-based thrombus models with planar and cylindrical geometries by use of one microsecond laser pulses. Solutions of a hydrophobic dye in mineral oil permitted monitoring of delivered colored oil into clear gelatin-based thrombus models. Cavitation bubble development and photoacoustic drug delivery were visualized with flash photography. This study demonstrated that cavitation is the governing mechanism for photoacoustic drug delivery, and the deepest penetration of colored oil in gels followed the bubble collapse. Spatial …

Meeting Notes 1996-06-13 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Correspondence With 2040 Means Business Committee, Metro (Or.)

Metro Collection

No abstract provided.