Digital Commons Network^™

Cryptography With Right-Angled Artin Groups, Ramon Flores, Delaram Kahrobaei

Publications and Research

In this paper we propose right-angled Artin groups as a platform for secret sharing schemes based on the efficiency (linear time) of the word problem. Inspired by previous work of Grigoriev-Shpilrain in the context of graphs, we define two new problems: Subgroup Isomorphism Problem and Group Homomorphism Problem. Based on them, we also propose two new authentication schemes. For right-angled Artin groups, the Group Homomorphism and Graph Homomorphism problems are equivalent, and the later is known to be NP-complete. In the case of the Subgroup Isomorphism problem, we bring some results due to Bridson who shows there are right-angled Artin …

The “Burnout” Construct: An Inhibitor Of Public Health Action?, Bianchi Renzo, Irvin Sam Schonfeld, Eric Laurent

Publications and Research

The prevention and treatment of the “burnout syndrome” within the critical care community is an important objective of the Moss et al. Burnout in the occupational area is based on the idea that burnout is especially common in individuals who care for critically ill patients. We think that the authors’ observations and recommendations are diminished by the fact that studies of burnout’s prevalence are methodologically problematic. The current definition and use of the burnout construct may in fact be detrimental to public health decision making.

Comparing Unmanned Aerial Systems (Uas) Structure-From-Motion Digital Surface Modeling To Laser Imaging Detection And Ranging (Lidar), Joshua D. Schane

Geography Masters Research Papers

UAS (unmanned-aerial systems) mapping is an emerging technology in spatial science. UAS, more informally referred to as “drones,” are small, radio-controlled or autonomous aerial platforms outfitted with camera sensor systems that can be deployed to fly missions for mapping terrain and structures. With the use of a photogrammetry technique called structure-from-motion, overlapping aerial images can be developed into high-resolution spatial data (< 5-cm). These data are georeferenced by GPS location information assigned to aerial targets which act as ground-control points (GCPs). This research explores the accuracy of the UAS-derived digital surface model (DSM) as it relates to a LIDAR DSM of the same study area in St. Helens, Oregon.

The site that was chosen to be mapped was a large wastewater treatment plant, with surrounding natural areas, residential, and industrial properties. The site was mapped using a small quadcopter-style UAS which was programmed autonomously; the overlapping aerial …

An Analysis Of Emergent Behavior In The North Dakota Water Depot-Based Water Allocation System Using A Decentralized Agent-Based Modeling (Abm) Approach, Michael Tyler Borders

Agribusiness and Applied Economics

Water demand has increased exponentially since 2007 in western North Dakota. This increase can largely be traced to the advancement of technology in hydraulic fracturing (fracking) which has led to one of the largest oil booms in the country. Along with the recent oil boom, water depots have expanded and played a significant role in providing water for fracking. Using decentralized agent-based modeling (ABM) to model water allocation among water depots, a scenario analysis obtains results for four scenarios. Policy suggestions, based on the scenario analysis, include allowing greater access to LSMR water sources and restricting SW and GW use …

Regional Federal Administration, Dave Owen

Faculty Scholarship

No abstract provided.

Chinese Love Stories From Ch'ing-Shih, Hua-Yuan Li Mowry, Menglong Feng

Dartmouth Scholarship

About the Book

Ch'ing-shih is a lovingly made anthology of love stories, provided we push the limits of definition of "love story" just a little wider than they are usually set. The stories are classified into twenty-four major categories, each further divided into subsections and concluded with a paragraph of commentary. Professor Mowry provides a sampling of the contents of each category but not of each subsection, though the headings themselves are enough to pique our curiosity: shall we turn next to "incomplete resurrections," or "unusual degenerates"? The stories were collected in the early seventeenth century, just a decade or …

To Branch Out Or Stay Focused?: Affective Shifts Differentially Predict Organizational Citizenship Behavior And Task Performance, Liu-Qin Yang, Lauren S. Simon, Lei Wang, Xiaoming Zheng

Psychology Faculty Publications and Presentations

We draw from personality systems interaction theory (PSI; Kuhl, 2000) and regulatory focus theory (Higgins, 1997) to examine how dynamic positive and negative affective processes interact to predict both task and contextual performance. Using a twice-daily diary design over the course of a three-week period, results from multi-level regression analysis revealed that distinct patterns of change in positive and negative affect optimally predicted contextual and task performance among a sample of 71 individuals employed at a medium-sized technology company. Specifically, within persons, increases (upshifts) in positive affect over the course of a work day better predicted the subsequent day’s organizational …

Does Beef Inclusion In A Modern American Diet Influence Risk Factors For Obesity-Related Metabolic Disorders Via A Swine Biomedical Model, Alexis Michelle Siomka

Animal Sciences

Using swine as a model for humans, this study was conducted to determine if replacing the sugar present in the average American diet (SUG) with ground beef (GB) would alter developmental body composition, onset of puberty, and risk factors for obesity-related metabolic disorders. Twenty-four Berkshire gilts of common age and sire line were obtained at weaning, assigned to one of two dietary treatments (SUG vs. GB), and pair-fed at an average of 3.7 % body weight for 93 d. Over time, GB gilts had superior body weight gain (P < 0.01), larger cross-sectional longissimus muscle area (P < 0.0001), less subcutaneous fat depth (P = 0.0005), and greater percentage lean body mass (P < 0.0001) than SUG. Reproductive tracts were prepubertal across treatments; however, follicular development was observed in GB gilts. Sodium, hematocrit, hemoglobin, and insulin-like growth factor 1 were higher and ionic calcium lower for GB compared to SUG gilts.

Language Rich Early Childhood Classroom: Simple But Powerful Beginnings, Erin E. Flynn

School of Social Work Faculty Publications and Presentations

This article highlights research exploring the benefits of small group storytelling as a way to promote rich language in early childhood classrooms. Using the storytelling of children from a preschool classroom serving lower SES children, the collaborative affordances of story circles are explored. Results show that small group storytelling engages children in ways of using language associated with literacy learning. When storytelling, children use language in extended, multi-clause turns, relaying what happened in another context. Story requires children to communicate what happened as well as the interpersonal significance of events. Small group storytelling also gives children a chance to practice …

Adjustment To College In The United States: Perceptions Of Qatari Students, Janet S. Walker, Jennifer E. Blakeslee, Batoul Khalifa, Ramzi Nasser, Atmane Ikhlef

School of Social Work Faculty Publications and Presentations

This qualitative study is part of a collaborative research effort undertaken by investigators based in the United States and Qatar to better understand Qatari student perspectives on their post-secondary adjustment and success. Here, we report findings from structured interviews with Qatari nationals studying abroad in the US, all of whom were males who were, or had recently been, undergraduates at state universities and/or community colleges in Oregon (n=21). Approximately two-thirds were in business or economics programs and about a third in STEM programs (science, technology, engineering, or mathematics). Most of the interviews were conducted in Arabic and translated into English …

Margaret’S Family Tree: A Story Of Hope And Belonging [Simulizi Ya Familia Ya Margareta: Hadithi Ya Matumaini Na Jumuiya], Susan Halverson

School of Social Work Faculty Publications and Presentations

Margaret’s Family Tree: A Story of Hope and Belonging (2016), is a coloring book designed to help children work through their grief in a constructive way and to help them acknowledge feelings about their lost loved ones. The book is written in both English and Swahili. It is illustrated in black and white by Oregon artist Edna M. Kennel. Halvorson-Westerberg is offering it free for duplication to anyone working with children, especially in African countries.

Pdxscholar Annual Report 2015, Karen Bjork, Sherry Buchanan, David Coate, Bertrand Robinson, Stacey Schlatter

Library Faculty and Staff Publications and Presentations

This report details the fifth year of operation for PDXScholar, Portland State University's institutional repository. The report covers the period between January 1, 2015 and December 31, 2015.

From Grapheme To Phonological Output: Performance Of Adults Who Stutter On A Word Jumble Task, Megann Mcgill, Harvey Sussman, Courtney T. Byrd

Speech and Hearing Sciences Faculty Publications and Presentations

Purpose

The purpose of the present study was to extend previous research by analyzing the ability of adults who stutter to use phonological working memory in conjunction with lexical access to perform a word jumble task.

Method

Forty English words consisting of 3-, 4-, 5-, and 6-letters (n = 10 per letter length category) were randomly jumbled using a web-based application. During the experimental task, 26 participants were asked to silently manipulate the scrambled letters to form a real word. Each vocal response was coded for accuracy and speech reaction time (SRT).

Results

Adults who stutter attempted to solve …

New Grand Narratives—The Metaphysical Worldview Of Avatar And Cloud Atlas, Josef Früchtl

Contemporary Aesthetics (Journal Archive)

Referring to the films Avatar (2009) and Cloud Atlas (2012), the author will demonstrate that a new era of metaphysical holism follows Postmodernism. These films celebrate a resurrection of the flesh with 3-D technology and a reincarnation of souls with the aesthetic technique of morphing. However apocalyptic their visions of the future might be, and however much they might seem to worship technical megalomania, they are also and again conveying a resounding ethical message and a taste of Utopia.

Ontology And The Aesthetics Of Cinematographic Bodies, Jean-Yves Heurtebise

Contemporary Aesthetics (Journal Archive)

If it is true, as Bergson claimed, that the universe is the sum of images (less than “objective” things but more than “subjective” representations), and if it is correct, as Deleuze said, that this hypothesis bears direct consequences for our understanding of the cinematographic art, then the analysis of cinematographic images and, especially, of the cinematographic images of the body (this living part of matter, this incarnated form of consciousness) can provide not only interesting aesthetic comments about specific directors and films, but also a philosophical understanding of the diverse modes of the sensible incarnation of human bodies. Interestingly enough, …

Edward Yang's Confusion, Law Nga-Chun, Lo Chun-Cheong

Contemporary Aesthetics (Journal Archive)

Edward Yang (in Chinese 楊德昌, 1947-2007) is one of the most renowned Taiwanese directors, whose works raise criticisms of modernity. Since the New Culture Movement in the 1910s and 1920s, Chinese literati have queried the place of traditional Chinese culture, especially Confucianism, on the road to modernization. This paper gives an account of Yang’s understanding of modernization and the Confucian tradition as illustrated in his work, A Confucian Confusion (1994). We argue that, though he despised politically endorsed Confucianism as ideology, without sufficient justification Yang nonetheless reserves the possibility of taking Confucianism as a supplement to modernity.

The Meanings In The Messages: How Sms Reminders And Real-Time Adherence Monitoring Improve Antiretroviral Therapy Adherence In Rural Uganda, Norma C. Ware, Emily A. Pisarski, Melanie Tam, Monique A. Wyatt, Esther Atukunda, Angella Musimenta, David Bangsberg, Jessica E. Haberer

OHSU-PSU School of Public Health Faculty Publications and Presentations

To understand how a pilot intervention combining SMS reminders with real-time adherence monitoring improved adherence to HIV antiretroviral therapy (ART) for adults initiating treatment in rural Uganda.

Design: Qualitative study, conducted with a pilot randomized controlled trial.

Methods: Sixty-two pilot intervention study participants took part in qualitative interviews on: preferences for content; frequency and timing of SMS adherence reminders; understandings and experiences of SMS reminders; and understandings and experiences of real-time adherence monitoring. Analysis of interview data was inductive and derived categories describing how participants experienced the intervention, and what it meant to them.

Results: SMS reminders prompted taking individual …

Civil Procedure Rules For European Courts, Geoffrey C. Hazard Jr.

Faculty Scholarship

No abstract provided.

Arts: Fiction And Fiction Writers: The Americas, Rachel Norman

Faculty Publications

This essay by Rachel Norman, which originally appeared in the Encyclopedia of Women & Islamic Cultures, discusses contemporary Muslim fiction published in the United States with a particular focus on three novels: Mojha Kahf's The Girl in the Tangerine Scarf, Laila Halaby's Once in a Promised Land, and Randa Jarrar's A Map of Home.

"A Bastard Jargon”: Language Politics And Identity In The Brief Wondrous Life Of Oscar Wao, Rachel Norman

Faculty Publications

This essay explores Junot Díaz's only full-length novel, The Brief Wondrous Life of Oscar Wao, through the theoretical lens of sociolinguistics and examines the ways in which Díaz has attempted to overcome the publishing industry's complicity in maintaining the nation's ethnocentric expectations in regards to English as the only acceptable language of publication. By introducing the work of several sociolinguists into the discussion, examining the use of African American Vernacular and “nerdish” alongside the Spanish, and reviewing Díaz’s relationship with his editors, I provide a more nuanced reading of the ubiquitous code-switching throughout Oscar Wao and suggest that beyond …

Are Asian Americans Now White?, Frank H. Wu

Faculty Scholarship

No abstract provided.

Legal Indeterminacy In Insanity Cases: Clarifying Wrongfulness And Applying A Triadic Approach To Forensic Evaluations, Kate Bloch, Jeffery Gould

Faculty Scholarship

No abstract provided.

Mangrove Enhancement As A Climate Change Adaptation Strategy In The Republic Of The Marshall Islands (Rmi): Potential Ecosystem Service Shifts Following Colonization, Andrew S. Harwood

Environmental Science and Management Professional Master's Project Reports

The ability of Small Island Developing States (SIDS) and Pacific Island communities to adapt to the increasing sea-levels, storm surge, saltwater intrusion, and other threats posed by global climate change is critical to the survival of many of these local communities as well as their cultures (LivingIslands.org). One of the world’s most striking examples of a nation at great risk is the Republic of the Marshall Islands (RMI) in the central Pacific Ocean. Due to a combination of factors, including the country’s extremely low elevation above sea-level (an average of 2 meters) and lack of adequate structures to provide safety …

Assessment Of Tmdl Implementation And Water Quality Status And Trends In Amazon Creek And Coyote Creek Watersheds, Stosh Zydek

Environmental Science and Management Professional Master's Project Reports

In this project, I analyzed the status and trends of water quality data describing fecal bacteria (E. coli) and DO in the Amazon and Coyote Creek watersheds of the Southern Willamette Valley, Oregon. I also examined TMDL implementation plans produced by DMAs, determined if and how implementation activities corresponded to changes in water quality, compared management and planning of DMAs in the watersheds, discussed aspects of the current TMDL, and compared state regulations and standards in other states. I concluded by making management recommendations to better facilitate future status and trend analysis.

Amazon Creek, Amazon Diversion Channel, A-3 …

Management Plan For Western Painted Turtle (Chrysemys Picta Belli) At Fairview Creek Headwaters, Ashley Smithers

Environmental Science and Management Professional Master's Project Reports

Western painted turtles (Chrysemys picta belli) are found occupying Fairview Creek Headwaters (FCH) in Gresham, Oregon. This urban stream contains a large wetland with an adjacent butte, all managed by the City of Gresham. This management plan addresses the preferred habitat and population of turtles at the site. A habitat delineation of the site revealed specific locations where habitat improvements could take place as well as areas of already beneficial habitat. Two site plans were prepared showing areas of the site that could be enhanced with nesting habitat as well as additional aquatic habitat and basking habitat. A habitat study …

Greenroof Study: Final Report, An Assessment Of Greenroof Design And Maintenance In Portland, Oregon: 2011 – 2013, Windy Carney Beck

Environmental Science and Management Professional Master's Project Reports

In 1999 the City of Portland (City) began to require that stormwater management facilities (SMF) be built when private property is newly developed or redeveloped (City Code Chapter 17.38). Proper maintenance and upkeep of SMFs is essential to ensuring they function appropriately. The City's Maintenance Inspection Program (MIP) is tasked with inspecting stormwater management facilities on private properties in order to ensure that they are being properly operated and maintained and to meet provisions of the City's NPDES Municipal Separated Storm Sewer System (MS4) permit.

Greenroofs are one type of SMF that are installed to satisfy this requirement. Understanding the …

Family Aided Community Treatment For The Treatment Of Early Psychosis: A Proof Of Concept Study, Ryan P. Melton, Cass Dykeman

Regional Research Institute for Human Services

Major psychotic disorders are one of the leading causes of disability worldwide. If these conditions are identified early and treatment promptly implemented, the prognosis is improved. This study examined the impact of a yearlong family aided community treatment (FACT) intervention upon psychiatric symptoms. Psychiatric symptom scores improved with the FACT intervention. Improved training on early recognition for mental health clinicians, implementation of a specific treatment model in community settings and policy around treatment funding allocation are implications of this study.

Notices, Editorial Office

Contemporary Aesthetics (Journal Archive)

No abstract provided.

Report On The Xxth International Congress Of Aesthetics " Aesthetics And Mass Culture" Seoul National University, Seoul, South Korea, 24-29 July 2016, Michael Ranta, Jale N. Erzen

Contemporary Aesthetics (Journal Archive)

Photos of the Congress.

Recent Publications, Editorial Office

Contemporary Aesthetics (Journal Archive)

No abstract provided.