Search

Search Results

• 1. [Article] Sustaining Oregon’s Cross-Sector Partnerships in STEM Education

  2016

  Citation × Citation Citation Abstract Copy Title: Sustaining Oregon’s Cross-Sector Partnerships in STEM Education Author: Becker, Gretchen 2016 Title: Sustaining Oregon’s Cross-Sector Partnerships in STEM Education Author: Becker, Gretchen 2016 Close

• 2. [Article] Comparing Vegetation and Soils of Remnant and Restored Wetland Prairies in the Northern Willamette Valley

  This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Northwest Scientific Association and can be found at: http://www.northwests...

  Citation × Citation Citation Abstract Copy Title: Comparing Vegetation and Soils of Remnant and Restored Wetland Prairies in the Northern Willamette Valley Author: Taylor, Sara M., Santelmann, Mary V. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Northwest Scientific Association and can be found at: http://www.northwestscience.org/page-937324 Title: Comparing Vegetation and Soils of Remnant and Restored Wetland Prairies in the Northern Willamette Valley Author: Taylor, Sara M., Santelmann, Mary V. This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Northwest Scientific Association and can be found at: http://www.northwestscience.org/page-937324 Close

• 3. [Article] An instrument system for measurement of evapotranspiration by the eddy correlation method

  A fast response meteorological instrument system for measuring parameters used in calculating evapotranspiration above a forest stand is described. Comprised of Gill-type propeller anemometers, Brady-array ...

  Citation × Citation Citation Abstract Copy Title: An instrument system for measurement of evapotranspiration by the eddy correlation method Author: U.S. International Biological Program. Coniferous Forest Biome, Belt, George H., King, Jack, University of Washington, Baily, Everett Minnich, 1938- A fast response meteorological instrument system for measuring parameters used in calculating evapotranspiration above a forest stand is described. Comprised of Gill-type propeller anemometers, Brady-array humidity sensors, thermistor air-temperature sensors and a Metro-Data digital tape recorder, the system was designed to measure eddy fluctuations in the range from one to 0.005 cycles per second. Details of the shop-built signal conditioning circuitry for the Brady-array are presented along with a discussion of apparatus and techniques employed to calibrate the sensors as a part of the instrument system. Problems with electrical noise and condensation within instrument packages which occurred during field trials are also discussed. Title: An instrument system for measurement of evapotranspiration by the eddy correlation method Author: U.S. International Biological Program. Coniferous Forest Biome, Belt, George H., King, Jack, University of Washington, Baily, Everett Minnich, 1938- A fast response meteorological instrument system for measuring parameters used in calculating evapotranspiration above a forest stand is described. Comprised of Gill-type propeller anemometers, Brady-array humidity sensors, thermistor air-temperature sensors and a Metro-Data digital tape recorder, the system was designed to measure eddy fluctuations in the range from one to 0.005 cycles per second. Details of the shop-built signal conditioning circuitry for the Brady-array are presented along with a discussion of apparatus and techniques employed to calibrate the sensors as a part of the instrument system. Problems with electrical noise and condensation within instrument packages which occurred during field trials are also discussed. Close

• 4. [Article] Nonmetropolitan hunger and food security in the northwest

  Declared out of print August 2012. Published September 2007.Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

  Citation × Citation Citation Abstract Copy Title: Nonmetropolitan hunger and food security in the northwest Author: Oregon State University. Extension Service, Johnson, Carly Declared out of print August 2012. Published September 2007.Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Title: Nonmetropolitan hunger and food security in the northwest Author: Oregon State University. Extension Service, Johnson, Carly Declared out of print August 2012. Published September 2007.Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog Close

• 5. [Article] An application of regression tree methodology in freeway travel time estimation using speed as a proxy

  Accurate freeway travel time estimation is of increasing importance for the travelers’ information and route guidance system. A non-parametric statistical methodology known as regression trees is deployed ...

  Citation × Citation Citation Abstract Copy Title: An application of regression tree methodology in freeway travel time estimation using speed as a proxy Author: Wang, Lijuan Accurate freeway travel time estimation is of increasing importance for the travelers’ information and route guidance system. A non-parametric statistical methodology known as regression trees is deployed in this research for dynamically and accurately estimating freeway travel times for the I5-I205 loop in the Portland Metro area of Oregon using speed as a proxy. In the absence of historical travel time data on PORTAL (Portland Oregon Regional Transportation Archive Listing), which is the source of data collection in this research, regression tree models are built to predict speeds first and the predicted speeds are in turn used to estimate travel times by mid-point algorithm. The regression tree models in this research are built based on historical data sets, including not only the traffic flow data but also the incident related data, weather data and time of day. This ensures the models will maintain stable prediction ability under both free flow conditions and non-free flow conditions on freeways. Model construction and validation are implemented in the statistical software package S-PLUS. A full regression tree model is constructed on one test data set including 227 daily test data sets randomly selected from the total of 342 daily test data sets collected in the entire year of 2005. To determine what kind of regression tree model should be selected to predict speed or estimate travel time for a certain day under dynamic conditions, a characterization approach is deployed and four characterization standards are setup to track the characteristics of both test data sets and validation data sets. Two experimental designs are constructed to evaluate and compare the performances of eleven regression tree models ─ the full regression tree model and the ten characterization regression tree models. The results show that these eleven tree models possess the ability to accurately predict speeds or estimate travel times. In addition, meaningful results are obtained showing which of these eleven tree models are best to choose for dynamically estimating travel times for a future day. Title: An application of regression tree methodology in freeway travel time estimation using speed as a proxy Author: Wang, Lijuan Accurate freeway travel time estimation is of increasing importance for the travelers’ information and route guidance system. A non-parametric statistical methodology known as regression trees is deployed in this research for dynamically and accurately estimating freeway travel times for the I5-I205 loop in the Portland Metro area of Oregon using speed as a proxy. In the absence of historical travel time data on PORTAL (Portland Oregon Regional Transportation Archive Listing), which is the source of data collection in this research, regression tree models are built to predict speeds first and the predicted speeds are in turn used to estimate travel times by mid-point algorithm. The regression tree models in this research are built based on historical data sets, including not only the traffic flow data but also the incident related data, weather data and time of day. This ensures the models will maintain stable prediction ability under both free flow conditions and non-free flow conditions on freeways. Model construction and validation are implemented in the statistical software package S-PLUS. A full regression tree model is constructed on one test data set including 227 daily test data sets randomly selected from the total of 342 daily test data sets collected in the entire year of 2005. To determine what kind of regression tree model should be selected to predict speed or estimate travel time for a certain day under dynamic conditions, a characterization approach is deployed and four characterization standards are setup to track the characteristics of both test data sets and validation data sets. Two experimental designs are constructed to evaluate and compare the performances of eleven regression tree models ─ the full regression tree model and the ten characterization regression tree models. The results show that these eleven tree models possess the ability to accurately predict speeds or estimate travel times. In addition, meaningful results are obtained showing which of these eleven tree models are best to choose for dynamically estimating travel times for a future day. Close

• 6. [Article] A household production approach to modeling household recycling effort

  Household recycling is an important means by which social costs of solid waste disposal may be reduced. These costs include energy and resource costs of collection and disposal as well as environmental ...

  Citation × Citation Citation Abstract Copy Title: A household production approach to modeling household recycling effort Author: Martini, Roger Household recycling is an important means by which social costs of solid waste disposal may be reduced. These costs include energy and resource costs of collection and disposal as well as environmental costs from emissions from landfills, incinerators, and collection vehicles. In this thesis, a household production model is used to represent the decision faced by the household in determining the level of effort to commit to recycling activities. The decision regarding the level of effort the household commits to recycling is hypothesized to be a function of economic variables such as the cost of solid waste disposal and expenditure on goods for both direct consumption and as inputs into production in the home, as well as of the demographic characteristics of the household. Two empirical models are developed, using data collected by the Portland Metro Association. The first of these models specifies a linear relationship between recycling behavior and the economic and demographic variables in the model. The second model is somewhat more complex, making use of the indirect utility function of the household. Redacted for Privacy The results of the empirical analysis show that the greater the price change associated with increasing solid waste disposal volume, the greater the probability that the household will devote more effort to recycling. As well, the age and education of the female head of the household and the presence of a child in the home also affect the households decision to recycle. Household recycling may be encouraged by municipal planners by using an escalating price structure for solid waste disposal. Additionally, recycling programs should emphasize convenience over other considerations such as variety of materials collected. Title: A household production approach to modeling household recycling effort Author: Martini, Roger Household recycling is an important means by which social costs of solid waste disposal may be reduced. These costs include energy and resource costs of collection and disposal as well as environmental costs from emissions from landfills, incinerators, and collection vehicles. In this thesis, a household production model is used to represent the decision faced by the household in determining the level of effort to commit to recycling activities. The decision regarding the level of effort the household commits to recycling is hypothesized to be a function of economic variables such as the cost of solid waste disposal and expenditure on goods for both direct consumption and as inputs into production in the home, as well as of the demographic characteristics of the household. Two empirical models are developed, using data collected by the Portland Metro Association. The first of these models specifies a linear relationship between recycling behavior and the economic and demographic variables in the model. The second model is somewhat more complex, making use of the indirect utility function of the household. Redacted for Privacy The results of the empirical analysis show that the greater the price change associated with increasing solid waste disposal volume, the greater the probability that the household will devote more effort to recycling. As well, the age and education of the female head of the household and the presence of a child in the home also affect the households decision to recycle. Household recycling may be encouraged by municipal planners by using an escalating price structure for solid waste disposal. Additionally, recycling programs should emphasize convenience over other considerations such as variety of materials collected. Close

• 7. [Article] The effectiveness of the spatial assimilation theory in describing current settlement patterns of Polish immigrants in Portland, OR

  The settlement patterns of European immigrants arriving around the turn of the 20th Century have been described using the theory of spatial assimilation. Recent academic literature has called into question ...

  Citation × Citation Citation Abstract Copy Title: The effectiveness of the spatial assimilation theory in describing current settlement patterns of Polish immigrants in Portland, OR Author: Latta, Brian The settlement patterns of European immigrants arriving around the turn of the 20th Century have been described using the theory of spatial assimilation. Recent academic literature has called into question whether this theory is still relevant in describing the settlement patterns of recent non-European immigrant groups, but has not been addressed whether or not this theory is still effective in describing continued European immigration. This research evaluated US census data to determine that a Polish ethnic enclave in the metro region of Portland, Oregon does not exist. Additionally, the absence of the Polish enclave appears to have a positive impact on the acculturation and assimilation of the Polish immigrants in the study area. Title: The effectiveness of the spatial assimilation theory in describing current settlement patterns of Polish immigrants in Portland, OR Author: Latta, Brian The settlement patterns of European immigrants arriving around the turn of the 20th Century have been described using the theory of spatial assimilation. Recent academic literature has called into question whether this theory is still relevant in describing the settlement patterns of recent non-European immigrant groups, but has not been addressed whether or not this theory is still effective in describing continued European immigration. This research evaluated US census data to determine that a Polish ethnic enclave in the metro region of Portland, Oregon does not exist. Additionally, the absence of the Polish enclave appears to have a positive impact on the acculturation and assimilation of the Polish immigrants in the study area. Close

• 8. [Article] Wetland compensatory mitigation in Oregon : a program evaluation with a focus on Portland metro area projects

  Citation × Citation Citation Abstract Copy Title: Wetland compensatory mitigation in Oregon : a program evaluation with a focus on Portland metro area projects Author: Oregon. Division of State Lands, Franklin, Kenneth T., Shaich, Joel A., United States. Environmental Protection Agency. Region X. Oregon Operations Office Title: Wetland compensatory mitigation in Oregon : a program evaluation with a focus on Portland metro area projects Author: Oregon. Division of State Lands, Franklin, Kenneth T., Shaich, Joel A., United States. Environmental Protection Agency. Region X. Oregon Operations Office Close

• 9. [Article] Residents’ drivers and barriers to participation in the Backyard Habitat Certification Program: Study of socio-ecological factors in Madison South neighborhood in NE Portland

  As urban development fractures and reduces available habitat for birds and other wildlife, conservationists are increasing pursuing strategies to improve the habitat value of privately owned yards in and ...

  Citation × Citation Citation Abstract Copy Title: Residents’ drivers and barriers to participation in the Backyard Habitat Certification Program: Study of socio-ecological factors in Madison South neighborhood in NE Portland Author: Powel, Jinnet As urban development fractures and reduces available habitat for birds and other wildlife, conservationists are increasing pursuing strategies to improve the habitat value of privately owned yards in and around cities. The Backyard Habitat Certification Program is a collaborative effort between the Portland Audubon Society and the Columbia Land Trust that has a two pronged mission: to increase the amount of available habitat for wildlife in the Portland Metro region by encouraging homeowners of lots one acre or less to naturescape their yards; and to increase stewardship and conservation awareness by broadening their participant base. Backyard Habitat’s agency in achieving both goals is linked to 1) their effectiveness at engaging and enrolling residents, 2) residents’ access to greenspace, and 3) their interest and agency in naturescaping their yards. Based on circumstantial evidence, Backyard Habitat is concerned they are not capturing the racial and ethnic diversity of the communities that they serve. This suggests that cultural and/or structural factors are limiting thier access to private yards and scope in providing conservation education. This study begins to explore the drivers and barriers to participation in the Northeast Portland neighborhood of Madison South with the objective of providing community specific and generalizable recommendations on how Backyard Habitat could broaden and deepen participation. Madison South was chosen as the study site because Backyard Habitat would like to increase participation there in order to enhance the impact of a large-scale habitat restoration project: the Dharma Rain Zen Center’s development at Siskiyou Square. The study used a social-ecological framework to explore both ecological and sociological factors that could serve as drivers or barriers to residents in choosing 1) to naturescape and 2) to participate in the Backyard Habitat Certification Program. The study consisted of three phases and looked at two scales of analysis: structural and cultural factors at the societal level and at the individual scale. Phase 1 assessed societal structural and cultural factors within the neighborhood (n= 5,314) including racial and ethnic diversity, language fluency, tenure status, and the value and distribution of greenspace using a combination of US Census data and publicly available on-line mapping tools (Metro Maps, Portland Maps, and Intertwine Alliance’s Regional Conservation Strategy overlays, Google Maps). Phase 2 and 3 consisted of smaller group of participants(n=28) that lived within 200m Siskiyou Square, and used mixed methods door-to-door surveys and guided interviews to explore individual interests, beliefs, and constraints shaping both desired and actual yard use. Phase 2 included the use of a yard-type instrument that allowed participants to indicate their interest in naturescaped, highly manicured, and predominantly permaculture yards by selecting among photographs. The study found that Madison South would be a good neighborhood for Backyard Habitat to engage with the purpose of diversifying their base since it was a relatively diverse racial and ethnic neighborhood within the Portland Metro region. However, since homeownership was disproportionately limited to White and Asian residents, the author recommends that Backyard Habitat should consider strategies for including renters in order to engage a representative demographic. Considering the percentage of rented, single-family homes with yards around the Siskiyou Square neighborhood, such strategies could serve Backyard Habitat’s ecological goals. The study identified limited English as a likely barrier for engaging some homeowners, particularly elderly Vietnamese. However the participant pool was too small to identify preferences, such desired as yard-type, along racial or ethnic lines. With 19% of homes owned by racial and ethnic minorities, Backyard Habitat should consider strategies for further identifying, and overcoming cultural barriers. The survey, interview questionnaire and yard-type instrument appeared useful at identifying receptivity to naturescaping and strategies for broadening participation. Based on the study’s findings and input from participants, the study makes recommendations for how Backyard Habitat can increase participation by being better known, being appealing, and being feasible to a variety of residents. Title: Residents’ drivers and barriers to participation in the Backyard Habitat Certification Program: Study of socio-ecological factors in Madison South neighborhood in NE Portland Author: Powel, Jinnet As urban development fractures and reduces available habitat for birds and other wildlife, conservationists are increasing pursuing strategies to improve the habitat value of privately owned yards in and around cities. The Backyard Habitat Certification Program is a collaborative effort between the Portland Audubon Society and the Columbia Land Trust that has a two pronged mission: to increase the amount of available habitat for wildlife in the Portland Metro region by encouraging homeowners of lots one acre or less to naturescape their yards; and to increase stewardship and conservation awareness by broadening their participant base. Backyard Habitat’s agency in achieving both goals is linked to 1) their effectiveness at engaging and enrolling residents, 2) residents’ access to greenspace, and 3) their interest and agency in naturescaping their yards. Based on circumstantial evidence, Backyard Habitat is concerned they are not capturing the racial and ethnic diversity of the communities that they serve. This suggests that cultural and/or structural factors are limiting thier access to private yards and scope in providing conservation education. This study begins to explore the drivers and barriers to participation in the Northeast Portland neighborhood of Madison South with the objective of providing community specific and generalizable recommendations on how Backyard Habitat could broaden and deepen participation. Madison South was chosen as the study site because Backyard Habitat would like to increase participation there in order to enhance the impact of a large-scale habitat restoration project: the Dharma Rain Zen Center’s development at Siskiyou Square. The study used a social-ecological framework to explore both ecological and sociological factors that could serve as drivers or barriers to residents in choosing 1) to naturescape and 2) to participate in the Backyard Habitat Certification Program. The study consisted of three phases and looked at two scales of analysis: structural and cultural factors at the societal level and at the individual scale. Phase 1 assessed societal structural and cultural factors within the neighborhood (n= 5,314) including racial and ethnic diversity, language fluency, tenure status, and the value and distribution of greenspace using a combination of US Census data and publicly available on-line mapping tools (Metro Maps, Portland Maps, and Intertwine Alliance’s Regional Conservation Strategy overlays, Google Maps). Phase 2 and 3 consisted of smaller group of participants(n=28) that lived within 200m Siskiyou Square, and used mixed methods door-to-door surveys and guided interviews to explore individual interests, beliefs, and constraints shaping both desired and actual yard use. Phase 2 included the use of a yard-type instrument that allowed participants to indicate their interest in naturescaped, highly manicured, and predominantly permaculture yards by selecting among photographs. The study found that Madison South would be a good neighborhood for Backyard Habitat to engage with the purpose of diversifying their base since it was a relatively diverse racial and ethnic neighborhood within the Portland Metro region. However, since homeownership was disproportionately limited to White and Asian residents, the author recommends that Backyard Habitat should consider strategies for including renters in order to engage a representative demographic. Considering the percentage of rented, single-family homes with yards around the Siskiyou Square neighborhood, such strategies could serve Backyard Habitat’s ecological goals. The study identified limited English as a likely barrier for engaging some homeowners, particularly elderly Vietnamese. However the participant pool was too small to identify preferences, such desired as yard-type, along racial or ethnic lines. With 19% of homes owned by racial and ethnic minorities, Backyard Habitat should consider strategies for further identifying, and overcoming cultural barriers. The survey, interview questionnaire and yard-type instrument appeared useful at identifying receptivity to naturescaping and strategies for broadening participation. Based on the study’s findings and input from participants, the study makes recommendations for how Backyard Habitat can increase participation by being better known, being appealing, and being feasible to a variety of residents. Close

• 10. [Article] Growth Management-oriented Water Conservation and Reuse in Oregon: Operationalizing Integrated Watershed and Water Resources Management

  Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR.

  Citation × Citation Citation Abstract Copy Title: Growth Management-oriented Water Conservation and Reuse in Oregon: Operationalizing Integrated Watershed and Water Resources Management Author: Cavallaro, Jamison Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Title: Growth Management-oriented Water Conservation and Reuse in Oregon: Operationalizing Integrated Watershed and Water Resources Management Author: Cavallaro, Jamison Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Close