Explosion structures occur in flows of Grande Ronde Basalt in the study area near Troy, Oregon. Data from nineteen stratigraphic sites indicate that the maximum number of flows that contain explosion structures at any one site is six. In the informally named Troy flow, explosion structures are widespread.

This study aims to explore the relationship between the objective (actual) environment and people's perceptions of the environment, and their relative effects on active travel behavior, particularly bicycling behavior. This is an important research gap in the current literature linking the built environment and active travel. Better understanding this relationship will help to explore the mechanism underlying the built environment- behavior relationship and identify potential interventions to promote active travel. Relying on the data from Portland, OR, this study investigated the following four research questions: (1) How does the objectively measured environment correspond to the perceived environment? And what factors contribute to the mismatch between the objective and perceived environment? (2) What are the different effects of the perceived and objective environment on active travel behavior? (3) Do perceptions mediate the effects of the objective environment on active travel behavior? (4) Do changes in the built environment change perceptions, and in turn change travel behavior? Through various statistical methods, this study found that there was a mismatch between perceptions and objectively measured environment, and such factors as socio-demographics, attitudes, social environment, and behavior could contribute to this mismatch. This study also found the perceived environment and objective environment had independent effects on bicycling. Further, this study found the objectively measured bicycling environment had only an indirect effect on bicycling behavior through influencing one's perceptions of the environment. Finally, this study found changes in the actual built environment may change the perceptions of the walking environment, but not the perceptions of the bicycling environment, at least in the short term.

The purpose of this study was to develop and test an instrument to measure client satisfaction among families who are clients of a child protective services agency. With the growing numbers of families coming into contact with CPS agencies, the burgeoning numbers of children in foster care, and the increasing attention to the effectiveness of services within this population, client feedback is one approach that has been largely ignored by CSP administrators. The basic problem this dissertation addressed is the issue of obtaining feedback from the involuntary client, such as the family in a child abuse case. Specifically, this dissertation addressed the following four research questions: 1. Can a client satisfaction instrument be developed for CPS clients largely through the input of the clients? 2. What are the domains of satisfaction that are applicable to CPS families? 3. How much involvement do the CPS families feel that they have in the planning and decision-making in their cases? What impact does this have on their overall level of satisfaction? 4. What are the relationships among the various domains of satisfaction and the overall level of satisfaction? Two rounds of interviews were held with families who had been clients of the CPS agency serving the State of Oregon, Children's Services Division. These interviews served as the major source of information for the identification of satisfaction domains and for the development of a closed-ended instrument to measure these domains. The responses to the interviews were content analyzed and four specific domains of client satisfaction were identified. These were: (a) Helpfulness, (b) Partnership, (c) Choice, and (d) Information Sharing. Items were also developed to comprise a "General Satisfaction" domain. A closed-ended instrument was constructed and pre-tested in two large Branch offices of the agency. This instrument included five items to address the interest of the agency in the issue of "convenience." It also included seven items to gather information concerning the opinions of clients on the agency mission and goals. Results of the pre-test were analyzed and the instrument revised. The final instrument was mailed to a population of 4,337 CPS families. Surveys were returned by 489, or 11%, of the families. Analyses, including correlational analysis, factor analysis, and internal consistency reliability analysis, provided empirical support for the domains identified through the client interviews Analysis provided very little support for the "convenience" domain. Satisfaction on the four scales measuring the four domains of satisfaction was positively correlated with measure of overall satisfaction. The overall theme which ran through the entire client survey instrument was that of empowerment. Three of the four domains of satisfaction which were identified were: Ca) "Partnership," (b) "Choice," and (c) "Information Sharing." The challenge is for CPS agencies to incorporate these issues into their practice.

A survey was made of the status of public school districts in Oregon with regard to growth or decline in enrollment and the uses or disposition of excess space resulting from a decline. A questionnaire was mailed to superintendents in each of the 126 districts which had declined in enrollment during the years between 1970 and 1983. Of the 106 districts which returned the questionnaire, 53.7% had experienced a decline of sufficient magnitude to require some adjustment in the ways in which building space is used. This excess space was used for classrooms, curriculum centers, office space, community programs, and for programs mandated by state, federal, or local governments. Districts used varied means to inform or involve the public in decisions concerning excess space. Administrative decision was the most often reported method; the use of a task force or citizens' advisory group was less often used. To explore the issues which might be factors contributing to conflict surrounding the closure of a school, the 33 last closed schools were examined in detail. Pearson correlation computations revealed a significant inverse relationship between the level of opposition to the closure and the presence of a task force in the decision-making process. An inverse relationship was also found between the level of opposition and the average length of time that school board members had served. No significant correlation was found between the level of opposition to the closure and the financial result of the closure. Of the 33 schools examined in the study, 29 had resulted in a financial saving; the remaining four had been closed so recently that the financial result was not yet known.

Originally, the focus of this project was to be a policy analysis and survey of the new procedures and regulations established by the state of Oregon for the protection and management of nursing home residents' Personal Incidental Funds (PIF). The analysis was to be divided into four phases, according to a pre-planned timetable. The last phase was to be a field survey of the policy's impact upon nursing homes and adult service workers. The timetable was synchronized with that of the Congregate Care Consultant from the Public Welfare Division's (PWD) Adult Services Unit, whose responsibility it was to develop and write a new policy for the state. Although the PIF is a miniscule segment of the total policy which the state of Oregon has developed for nursing facilities, it is submitted here as representative of public policy formulation in that area.

Mickey Springs in the Alvord Desert, southeast Oregon, is analogous to other Basin and Range hydrothermal systems where the requisite conditions of heat source and permeable pathways are met through crustal thinning due to normal faulting. This study examines the morphology and lifespan of near-surface spring features through use of ground penetrating radar, thermoluminescence (TL) dating, and elevation modeling. Duration of hydrothermal activity at Mickey Springs has not previously been determined, and age determinations of sinter at the site are conflicting. The reason for and timing of this change in silica saturation in the hydrothermal fluid has not been resolved. Three morphologies of silica sinter deposition have been identified at Mickey Springs. These are (1) well-sorted, fine-grained sandstone with ripple marks, cross beds and preserved root casts, to poorly-sorted conglomerate of primarily basalt clasts, both cemented by coeval silica deposition, (2) large depressions (12-32 m diameter) rimmed with sinter, characterized by fine silt and clay blanketing a sinter apron and infilling the central depression, and (3) quaquaversal sinter mounds identified by outcropping pool-edge sinter typically surrounding a shallow depression of loose sediment. Silica-cemented sandstone and conglomerate were the first features formed by coeval hydrothermal processes at the site, and were emplaced prior to 30 kya as suggested by structural and stratigraphic relationships. Structure between two interacting fault tips may have constrained the extent of silica cementation. By 30 kya, a left-stepping fault oriented roughly north/south further constrained the near-surface permeable zone. TL dates from sediment stratigraphically below and above sinter aprons around mounds and depressions (former spring vents) indicate sinter deposition between 30 and 20 kya. Location of these features was dictated by development of the left-stepping fault. As pluvial Lake Alvord filled at the end of the Pleistocene, lake sediment filled most vents, which were largely inactive, with fine-grained silt and clay. Today, hydrothermal activity persists in two modes: (1) The current high-temperature springs, steam vents and mudpots concentrated in a 50 x 50 m area south of the sinter mounds and depressions, and (2) scattered springs and steam vents that exploit previous permeable pathways that once provided the hydrothermal fluid which precipitated the sinter aprons. Currently there is no active silica sinter deposition at Mickey Springs. Structures and stratigraphic relationships identified through this study favor a transport-limited and structurally controlled model of fluid transport. Sinter deposition is determined to have occurred before the most recent highstand of pluvial Lake Alvord. A climate driven model, where groundwater recharge from pluvial Lake Alvord circulates to a deep heat source and enhances spring discharge, is not supported by these findings, as no evidence was found for sinter precipitation after the drying of the lake. Future studies of other hydrothermal systems in the Basin and Range may reveal that permeable pathways along local structures are the primary drivers in this region.

A Thirst for Moretakes the reader on a journey into self-development culture around Portland, Oregon. The author attends events devoted to personal growth to try to understand how this culture shapes our lives and the way we think. Along the way, she encounters psychics, mystics, an alleged cult leader, and seekers and self-reinventors of all stripes. As participants in this culture work to build their own philosophies and define their own spirituality, they also create their own communities--intentionally and otherwise. These communities form the heart of this exploration. Chapters 1 and 2 explore the spontaneous communities that arise during afternoon events in which participants pay for goods, services, and information pertaining to personal growth and spirituality. Chapter 3 delves into a sacred art and music festival in which participants gather outdoors for a handful of days in the hopes of connecting with each other and transforming themselves--and society--in the process. The final chapters explore the lives of two communities. In Chapter 4, a woman devotes her life to starting up an eco-village in the foothills of Mt. Hood. In Chapter 5, the author visits a 41-year-old commune in which residents and visitors have abandoned former lives in their search for meaning, fulfillment, belonging, and a place to call home. As the author questions others about their beliefs, she begins to question her own. Why do we believe what we believe?

This study examined source rock geochemistry of the southern Tyee Basin. Total organic carbon, rock-eval pyrolysis, vitrinite reflectance, thermal alteration index and visual assessments were performed on splits from cutting samples from five wells and on outcrop samples from four measured sections. Organic matter was found to be dispersed, averaging about 0.5 weight percent. The organic matter is primarily terrestrial in origin, or type I l l , with low potential for gas production and no oil potential. Three coal samples are clearly the richest sources of organic matter examined in this study.

The purpose of this descriptive study was to examine and compare perceptions between high school department chairs and teachers regarding the role of the high school academic department chair in Oregon, a position which has been largely ignored in recent educational reform efforts. Schools selected for the study were limited to those sharing the same qualities of size and structure as those of the high schools in the researcher's own district. A researcher-constructed questionnaire defining 44 activities comprising five categories of department chair responsibility provided data from 118 high school department chairs and 114 teachers from 34 Oregon high schools. Respondents addressed three issues: (a) definition-perceptions of what the role of the high school department chair looks like in practice; (b) clarification-perceptions of which activities are most important to the role; and (c) extension-perceptions of which activities are most important for the department chair to continue to improve in carrying out the role. Results of this study show teachers' expectations for the role of the department chair to be substantially different from those of the chairs themselves. Chi-square testing revealed statistically significant (R < .05) incongruence of perceptions between department chairs and teachers for 21 of the 44 activities across all five of the categories of department chair responsibility. Department chairs consistently perceived themselves to devote more time to their role than teachers perceived chairs to spend. Teachers placed more importance than did chairs on protection of instructional time and support of teachers' professional needs and concerns. Statistically significant differences in perception between males and females in the study population were also found for 24 of the 44 activities. Females consistently valued more highly than did males those department chair activities that reflect a facilitative, collaborative approach to leadership. Greater percentages of males more highly valued management activities than did females. These findings suggest both ambiguity in role definition and incongruence of role expectations to be obstacles to effective role performance for the high school department chair. Open, focused dialogue is suggested as a means for resolving these contradictions.

There are extensive empirical studies on the impacts and effectiveness of Smart Growth policies; however, very few of them consider the perspective of individual decision makers and, to this author's knowledge, none have studied developers as location-aware decision-making agents. This study tries to fill this gap partially by assessing the impacts of Portland's smart growth policies on developers' location choice behavior with developer-based location choice models. The dissertation has two purposes. By assessing the impacts of Smart Growth policies on individual home developer's location choice, it provides a micro- and behavioral foundation for the understanding of Smart Growth policies. As a bi-state metropolitan area located on the border between Oregon and Washington, the Portland region provides a unique environment that allows my research to examine whether home developers react to Smart Growth policies differently in the two states with different land use policy systems. The dissertation also aims to create a developer-based land development forecast model, which can be used as a scenario analysis tool for the Portland region's long-term land use and transportation planning. Besides the developer location choice model mentioned above, the components of this comprehensive developer-based land development model also include a time series regression model that predicts annual new housing supply in the region and a model that synthesizes housing projects in a forecast year. The study shows that home developers in the Portland metropolitan area are sensitive to most Smart Growth policies that have been implemented in the region, but they react to them differently across the border between Oregon and Washington. Single-family home (SFH) and multi-family home (MFH) developers show different preferences for location attributes. The most significant predictors of where a developer will choose to locate a project are the locations of previous projects. After controlling for all of the other factors discussed above, there remains a strong preference for developing SFH units outside of the UGB in both Oregon and Washington sides of the Portland metropolitan area. Latent class models have been developed to detect taste variations among home developers in the SFH and MFH markets separately. Estimation results show clear taste variations across developers and housing projects with respect to site attributes in their location choice. With other variables in the segmentation model being the same, project size provides a better fit to the data than developer size, indicating that developers have taste variations among their different projects. Large size SFH projects developed by contractor-owners are more likely to be within the UGB and their locations tend to have higher residential density, housing diversity, transportation accessibility, road density, and land price. With most MFH projects within the UGB, estimation results show that large size MFH projects prefer the locations with higher residential density, housing diversity, mixed use, road density, land price, average household income, and proportion of young and middle age households. The three-step new housing supply and location choice forecast model seem to be able to capture the basic trend of housing market and land development in the Portland region. Three different aggregate housing supply forecast models, an conditional time series regressive model, a unconditional time series regression model, and an auto-regression integrated moving average (ARIMA) model were tested and their advantages and disadvantages were discussed. Both the SFH and MFH project synthesis models can simulate housing projects well for a forecast year. Three location choice models were developed to allocate synthesized housing projects into space. The three models are characterized separately as: (1) assumed market homogeneity and atomization of development projects; (2) deterministic market segmentation and synthesis of projects by size; and (3) probabilistic market segmentation and synthesis of projects by size, using a latent class approach. Examination of forecast results shows that all three models can successfully capture the basic spatial pattern of housing development in the region; however, the spatial distribution of MFH development is lumpier and more unpredictable. While Models 2 and 3 are more sophisticated and make more sense from a theoretical perspective, they do not return better forecast results than Model 1 due to some practical issues. Models 2 and 3 would be expected to perform better when those practical issues are solved, at least partially, in future research.