Digital Commons Network^™

Directflow: A Domain-Specific Language For Information-Flow Systems, Andrew P. Black, Chuan-Kai Lin

Computer Science Faculty Publications and Presentations

Programs that process streams of information are commonly built by assembling reusable information-flow components. In some systems the components must be chosen from a pre-defined set of primitives; in others the programmer can create new custom components using a general-purpose programming language. Neither approach is ideal: restricting programmers to a set of primitive components limits the expressivity of the system, while allowing programmers to define new components in a general-purpose language makes it difficult or impossible to reason about the composite system. We advocate defining information-flow components in a domain-specific language (DSL) that enables us to infer the properties of …

Cache Coherence Protocol Verification Using Ωmega, Ki Yung Ahn

Computer Science Faculty Publications and Presentations

We verify some correctness properties of the DASH cache coherence protocol using Ωmega. Ωmega is a language with a rich type system featuring GADTs, type functions, and user-guided type checking rules. Cache coherence protocols have both safety properties and liveness properties. We show how to describe some of the safety properties of DASH cache coherence protocol in mega. Since liveness properties are not easily expressed by types, we investigate invariants sufficient to imply some of the liveness properties of concern, and assert those invariants as well in the type system of Ωmega. Using Ωmega, we can have both a working …

Protecting The Internet With Public Work, Ed Kaiser, Wu-Chang Feng

Computer Science Faculty Publications and Presentations

Distributed denial-of-service attacks represent a growing problem for networked systems. To tackle this problem, this paper explores the addition of a public work function to the service advertisement mechanisms used by such systems. When under attack, services advertise this function along with their location information and clients must attach a solution to the function with subsequent requests. The function, which can be made specific to the source of traffic, is publicly verifiable, allowing arbitrary network devices at the edges of the network to quickly verify that subsequent communication from the source will be accepted by the destination. We describe a …

Meeting Notes 2006-12-14 [Part A] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Meeting Notes 2006-12-14 [Part B] , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Faculty Senate Monthly Packet December 2006, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The December 2006 Monthly packet includes the December agenda and appendices and the Faculty Senate minutes and attachments from the meeting held November 2006

Food Insecurity And Oregon Tanf Leavers, Kim Hoffman

Dissertations and Theses

Food security, as defined in the U.S., means access by all people at all times to enough food for an active, healthy life. Examining the risk factors and consequences of food insecurity for those who leave Temporary Assistance for Needy Families (TANF) has practical implications, but empirical research has lagged behind theory. This study tested the Campbell Model of Food Insecurity (1991), a previously untested theoretical model, in a sample of TANF leavers in Oregon (n=637 Wave 1, n=552 Wave 2). Additionally, a qualitative examination of Oregon Food Bank workers, Oregon's largest charitable emergency food organization, was conducted to gather …

Interview With Greg Sawyer, Providence Builders, 2006 (Audio), Greg Sawyer

All Sustainability History Project Oral Histories

Interview of Greg Sawyer by Amy Evangelista in NE Portland, Oregon on December 1st, 2006.

The interview index is available for download.

Gridfields: Model-Driven Data Transformation In The Physical Sciences, Bill Howe

Dissertations and Theses

Scientists' ability to generate and store simulation results is outpacing their ability to analyze them via ad hoc programs. We observe that these programs exhibit an algebraic structure that can be used to facilitate reasoning and improve performance. In this dissertation, we present a formal data model that exposes this algebraic structure, then implement the model, evaluate it, and use it to express, optimize, and reason about data transformations in a variety of scientific domains.

Simulation results are defined over a logical grid structure that allows a continuous domain to be represented discretely in the computer. Existing approaches for manipulating …

Adolescent Mothers: Youth In Need Of Developmentally Appropriate Services, Patricia Arlyne Zimmerman

Dissertations and Theses

This research examines the childhood abuse and maltreatment experiences of adolescent mothers (age 14 to 17) to investigate if these experiences have hindered their socioemotional development and consequently, their parenting behaviors and attitudes. Data were gathered using four standardized self-report instruments: the Child Trauma Questionnaire (CTQ), the Trauma Symptom Checklist for Children (TSCC), the BarOn Emotional Quotient Inventory-Youth Version (EQi-YV), and the Adult Adolescent Parenting Inventory (AAPI-2). Two additional questionnaires were developed to gather demographic and social service information to add to the knowledge base of the field, and to examine what (if any) developmentally focused services young mothers may …

Meeting Notes 2006-11-09 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

An Examination Of Conflict Conversation In An Online Community: The Pie Fight At Dailykos.Com, Samantha Isabella Soma

Dissertations and Theses

The increasing popularity of the social web and online communities requires the attention of researchers of conflict resolution. Although there are many ways to resolve conflict offline, the ways in which conflict takes place within a native online context have not been much studied. Are any of the tools and strategies that are used to improve communication offline used successfully online, or are some other strategies taking their place? What communication patterns occur within an online community equipped with comment moderation capabilities? This research is a case study and addressed these questions by performing a qualitative analysis of comment conversations …

Faculty Senate Monthly Packet November 2006, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The November 2006 Monthly packet includes the November agenda and appendices and the Faculty Senate minutes and attachments from the meeting held October 2006

Detecting Overweight Children In Primary Care: Do National Data Reflect The Typical Urban Practice?, Elena Sutu, Carlos J. Crespo, Barbara Shine, Anita Doshi, Teresa Quattrin

Community Health Faculty Publications and Presentations

The article presents a study which aims to obtain data about the feasibility of detecting risk for overweight and overweight in infants and young children seen for well-child visits based on pediatricians' standard practice, to compare these estimates with the national data, and to compare the data gathered during well-child visits with data collected during well-child visits with data obtained in preschool children seen for a sick-child visit. It was stated that earlier children started increasing in adiposity, the greater the risk for being obese as adolescents and adults with 40 percent of infants whose weight was above the 95th …

Medical Students’ Assessments Of Skill Development In Rural Primary Care Clinics, M. L. Hunsaker, M. L. Glasser, K. M. Nielsen, Martin S. Lipsky

Community Health Faculty Publications and Presentations

Introduction: This study assessed the impact of a rural primary care preceptorship on medical students’ self-perceived ability to provide acute, chronic, and preventive care, to perform procedures, to communicate with patients, and to understand the community and healthcare system.
Methods: Students were surveyed about their self-assessed skills on 11 major components (97 items) immediately before and after a 16 week preceptorship in a rural primary care clinic. Responses were analyzed for 96 medical students using a paired comparisons t-test and univariate statistics.
Results: Students’ skills significantly increased on all components and items. The skills most highly assessed post-preceptorship were …

Transmission Electron Goniometry And Its Relation To Electron Tomography For Materials Science Apoplications, Peter Moeck, P. Fraundorf

Physics Faculty Publications and Presentations

Aspects of transmission electron goniometry are discussed. Combined with high resolution phase contrast transmission electron microscopy (HRTEM) and atomic resolution scanning TEM (STEM) in the atomic number contrast (Z-STEM) or the phase contrast bright field mode, transmission electron goniometry offers the opportunity to develop dedicated methods for the crystallographic characterization of nanocrystals in three dimensions. The relationship between transmission electron goniometry and electron tomography for materials science applications is briefly discussed. Internet based java applets that facilitate the application of transmission electron goniometry for cubic crystals with calibrated tilt-rotation and double-tilt specimen holders/goniometers are mentioned. The so called cubic-minimalistic tilt …

The Portland Spectator, October 2006, Portland State University. Student Publications Board

Portland Spectator

Editor: Crystal Joele Rea

Articles in this issue include: On the roundabout: When politics talk in circles; 15 things college freshmen should know: voice of experience; ROTC: Though PSU has no ROTC program, you can still get involved; Elections: They are much closer than you realize--November elections are just around the corner; Dealing with the devil: Back to terror; The English language: Why it is necessary to have a common, unifying language; Hezbolla: What you might not know.

2006 Ballot Measure Report Measure 48, City Club Of Portland (Portland, Or.)

City Club of Portland

No abstract provided.

Meeting Notes 2006-10-12 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Efficient Support For Application-Specific Video Adaptation, Jie Huang

Dissertations and Theses

As video applications become more diverse, video must be adapted in different ways to meet the requirements of different applications when there are insufficient resources. In this dissertation, we address two sorts of requirements that cannot be addressed by existing video adaptation technologies: (i) accommodating large variations in resolution and (ii) collecting video effectively in a multi-hop sensor network. In addition, we also address requirements for implementing video adaptation in a sensor network.

Accommodating large variation in resolution is required by the existence of display devices with widely disparate screen sizes. Existing resolution adaptation technologies usually aim at adapting video …

2006 Ballot Measure Report Measures 41 & 43, City Club Of Portland (Portland, Or.)

City Club of Portland

No abstract provided.

Faculty Senate Monthly Packet October 2006, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The October 2006 Monthly packet includes the October agenda and appendices and the Faculty Senate minutes and attachments from the meeting held June 2006

The Economic Impact Of Early Life Environmental Tobacco Smoke Exposure: Early Intervention For Developmental Delay, Thaddeus R. Miller, Virginia A. Rauh, Sherry A. M. Glied, Dale Hattis, Andrew Rundle, Howard Andrews, Frederica Perera

Urban Studies and Planning Faculty Publications and Presentations

BACKGROUND AND OBJECTIVES: Early-life exposure to environmental tobacco smoke (ETS) can result in developmental delay as well as childhood asthma and increased risk of cancer. The high cost of childhood asthma related to ETS exposure has been widely recognized; however, the economic impact of ETS-related developmental delay has been less well understood.

METHODS AND RESULTS:The Columbia Center for Children's Environmental Health (CCCEH) has reported adverse effects of prenatal ETS exposure on child development in a cohort of minority women and children in New York City (odds ratio of developmental delay = 2.36; 95% confidence interval 1.22-4.58). Using the environmentally …

India’S Rise As A Software Power: Governmental Policy Factors, Tad Drozdowski, Hai Huynh, Brian Lininger, Yicheng Peng, Naruedom Sakulyong

Engineering and Technology Management Student Projects

The Indian government’s policies toward an open, global market, support of educational institutions, and enhancement of appropriate infrastructure helped enable their software industry to become critical components of India’s economic growth in the 1990s. The Technical, Organizational, and Personal perspective (T, O, and P) model is utilized to examine different affects that each perspective, inclusive of government policies, has on a socio-technical system (Software development in India). The Indian government has provided substantial economic liberalization to support their software industries, though continued reform is necessary to ensure that they remain a software superpower.

A Pattern Language For Extensible Program Representation, Andrew P. Black, Daniel Vainsencher

Computer Science Faculty Publications and Presentations

For the last 15 years, implementors of multiple view programming environments have sought a single code model that would form a suitable basis for all of the program analyses and tools that might be applied to the code. They have been unsuccessful. The consequences are a tendency to build monolithic, single-purpose tools, each of which implements its own specialized analyses and optimized representation. This restricts the availability of the analyses, and also limits the reusability of the representation by other tools. Unintegrated tools also produce inconsistent views, which reduce the value of multiple views. This article describes a set of …

Meeting Notes 2006-09-07 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

A Rough Guide To Interdisciplinarity: Graduate Student Perspectives, Jessica K. Graybill, Sarah Dooling, Vivek Shandas, John Withey, Adrienne I. Greve, Gregory L. Simon

Institute for Sustainable Solutions Publications and Presentations

A widely held belief is that only through interdisciplinarity can academics effectively address today's complex ecological problems, because these problems demand cross-disciplinary efforts and specialized knowledge from natural and social scientists. Innovative interdisciplinary research and curricula have been created to train a new generation of scientists to engage with complex issues. It seems critical that those most affected by interdisciplinary education—doctoral students—provide feedback about such innovations. Without understanding students' experiences in interdisciplinary programs, faculty will not know whether they are "getting it right" for future generations of interdisciplinarians. From our experiences as doctoral students, we provide reflections and perspectives on …

Ecolopolis 2.0, Portland State University

Regional Planning and Metropolitan Growth Management Research Projects

This is a working document and is the second report in this series. In section one the document begins by reviewing the origin and definition of "Cascadia" as a named place. Section two includes a description of the Cascadian landscape, and the issues and conditions in both its metropolitan and nonmetropolitan areas. Section three present four strategies for growing, stewarding, and sustaining Cascadia along "ecolopoli­tan" lines. The document concludes with the next steps for this project.

This version, 2.0, has been produced by the Spring 2006 class and is edited by Dr. Ethan Seltzer

Age-Related Shifts In Housing And Transportation Demand : A Multidisciplinary Study Conducted For Metro By Portland State University's College Of Urban And Public Affairs, Final Report, Margaret B. Neal, Nancy J. Chapman, Jennifer Dill, Irina V. Sharkova, Alan Kenneth Delatorre, Kathleen A. Sullivan, Tomoko Kanai, Sheila A. Martin

Urban Studies and Planning Faculty Publications and Presentations

Understanding where middle-aged and older adults live, where they are moving, how they get around, and the factors influencing these decisions is essential for planning for the future. To gain an understanding of the impact of age-related shifts on housing and transportation demand, Portland State University's College of Urban and Public Affairs, via its Institute on Aging, was contracted to conduct a review of the literature and to analyze existing key local and national data sources. A multidisciplinary team of faculty and graduate students was assembled and performed the work in the summer of 2006. The literature reviewed and the …

Meeting Notes 2006-08-10 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.