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Nuclear and chloroplast diversity of Pacific Northwest wheat (Triticum aestivum) breeding germplasmEdwards, Melanie Love 18 December 2002 (has links)
Wheat breeders must effectively maintain and manage existing genetic diversity in
order to continue the development of superior genotypes. It is therefore fundamental
that the genetic relationships and diversity within the germplasm pools be thoroughly
characterized and understood. Recently, DNA-based markers have provided powerful
tools for genetic diversity analysis. This study investigates the usefulness of nuclear
and chloroplast simple sequence repeat (SSR) markers in characterizing Pacific
Northwest wheat (Triticum aestivum) breeding germplasm, and explores the patterns
of genetic relatedness revealed by these markers. The 15 chloroplast SSRs were
effective in differentiating between B-type, D-type, and barley (Hordeum vulgare)
cytoplasms. Genetic distance estimates were determined for each pair of lines studied
and analyzed using UPGMA clustering. The markers revealed five plastomic types
within the B-type cytoplasm studied. Several lines of wheat in this germplasm,
including important PNW cultivars like Madsen, were found to contain D-type
cytoplasm rather than the B cytoplasm of wheat. Nuclear SSR assays using 24 markers
revealed three major clusters of germplasms: PNW soft white winter wheat, Western
European-derived lines, and Great Plains accessions, as well as two clusters of more
distantly related lines and genetic stocks. The primary defining characteristic of these
clusters was regional adaptation. Subgroups of these major groups often clustered
together on the basis of pedigree and market class. When nuclear and chloroplast SSR
data was combined in analysis, the primary defining characteristic of the dendrogram
became the type of cytoplasm rather than regional adaptation, with secondary
divisions based on pedigree relationships. Cultivars released prior to 1950 were found
to have a minimum of 20% of alleles in common for nuclear and chloroplast data
combined, despite being unrelated via pedigree information. Heterogeneity was 2.3%
for all marker/variety combinations. Overall, these sets of markers were found to be
effective in characterizing the genetic relatedness of PNW wheat breeding germplasm. / Graduation date: 2003
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Exploring college students' understanding of diversity : the effect of experience, interventions, and encapsulationVersluis, Diana Omura 04 June 2001 (has links)
This study sought to understand how post-secondary students experience
and process issues of diversity, to discover what those views of diversity are, and
how those views might change. The two issues that participants felt most strongly
about were homosexuality and scholarships for students of color. Their views on
homosexuality ranged from admitted homophobia, to ambivalence, to tolerance, to
full acceptance. Religion seemed to play a part among those who were ambivalent,
but not for those who were homophobic. Views were not static, but shifted
depending on the circumstances. A participant who might object to a homosexual
serving in the military might have no problem having a homosexual as a neighbor.
Regarding scholarships for students of color, some of the 27 White students
agreed that this was fair, while others seemed to resent the idea and questioned its
need. Two of the four multi-racial students were somewhat sympathetic to the
latter view. A high degree of acceptance on one diversity issue did not necessarily
mean high acceptance on other issues. A participant who advocated for gays to
have equal admittance and acceptance in the military was against scholarships for
students of color.
Participants' views were most influenced by their personal experiences.
Interventions such as coursework, workshop, panel presentation, and social contact
seemed to have a less influence than personal experiences. Those pivotal moments,
as discussed by Young Y. Kim, seemed to have caused stress, adaptation, and
growth, which resulted in a greater awareness of an issue, of themselves, and of
others. The rejection of experiences and interventions might be explained by
encapsulation, as proposed by C. Gilbert Wrenn. Encapsulated individuals seem to
choose to reject information or experiences that might challenge their views. The
implication for educators is to provide more opportunities for students to have
personal experiences involving diversity that might lead to pivotal moments.
Thirty-one undergraduates at a small, liberal arts university in the Pacific
Northwest were interviewed three times over an average of seven weeks. All had
participated in a nationally known diversity workshop and had also participated in
regular courses that addressed diversity issues. / Graduation date: 2002
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Reflections on change : a community-college faculty perspectiveZmetana, Katherine 27 March 2002 (has links)
This phenomenological research study focused on educational change as perceived
by 16 Liberal Arts faculty members at a Pacific Northwest community college.
Research data were collected through in-depth dialogic interviews and a follow-up
dialogue session with six participants. The principal guiding research questions
comprised the following:
1) What is the context of the community college? The institution is facing
severe budgetary restrictions, widening diversity of students, the
implementation of new technologies and distance learning, changing faculty
and administrator roles, competition from the private sector, and the
redefining of the community college role.
2) What is the background of the faculty participants? In the past, faculty
have experienced a collegial culture and a shared sense of purpose, which no
longer seems to exist. Their values are deeply connected to the social
responsibilities of education and student needs, which they feel is at odds with
the trend toward commodification of education.
3) What are faculty's perceptions of change and its effects? Change is
constant; and instructors adapt incrementally. Mandated changes are seen to
have fuzzy meanings and hidden agendas, which sometimes go against the
core values of higher education.
4) What do faculty want? Faculty want to wrestle with the issues and solutions
for dealing with change collaboratively, and they need the time and space to do
so. They also want administrators to hear their voice, and to include faculty
priorities in educational decision-making.
Faculty participants had clear ideas on ways that would make the implementation
of change more successful and meaningful in their lives and in the future of their
community college:
1) Make change for a worthy or merited purpose.
2) Listen to what faculty have to say.
3) Allow faculty to wrestle with the challenges.
4) Provide faculty with support and recognition.
5) Keep student needs as a central priority.
6) Maintain the human values and social purpose of education.
Most important, faculty feel that the human element cannot be discounted or
forgotten in the rush to transform higher education, for faculty are the ones charged
with the implementation of most change initiatives and they must deal with the
consequences. / Graduation date: 2002
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Possible compensations of the components of grain yeild in wheat (Triticum aestivum L.) as influenced by genotype by environment interactionsBedoshvili, David 14 June 1999 (has links)
Despite many investigations genotype by environment interaction remains
one of the least understood factors in plant improvement. Understanding genotypic
differences responsible for such interactions could assist in making more informed
breeding decisions. The components of yield being less complex than grain yield
per se may be useful for selection to improve adaptation of genotypes and enhance
grain quality. However, the potential compensatory response among the
components of yield could compromise their usefulness as selection criteria.
To evaluate this aspect fifteen cultivars, including Soft White, Hard White
and Hard Red wheats, were planted at three diverse locations over two growing
seasons. Genotypes were ranked based on measurements for specific traits in each
environment. The genotype by environment interaction for grain yield, protein
concentration and hardness were investigated according to the AMMI model.
Influence of environmental factors and genotype by environment interactions on
associations among selected traits were determined.
The results of this study showed that genotypic differences in adaptation to
the Pacific Northwest and resistance to Septoria spp. were responsible for
interactions for grain yield. However, no consistent patterns of response were found
among the similar cultivars for quality traits. Those environments that favored
expression of biomass and grain weight potential provided for enhanced
performance of the adapted cultivars. The environments with suppressed biomass
accumulation and grain filling interacted positively with the unadapted cultivars. A
large compensatory relationship between tillering and apical growth was detected.
No or low compensation was observed between grains per spike and thousand
kernel weight. Two different strategies were proposed for improvement of Soft and
Hard White wheat cultivars under the conditions of the Pacific Northwest. Both
strategies accentuate importance of increasing biomass while maintaining harvest
index. When selecting for higher yielding Soft White cultivars, plants with larger
leaves, stronger stems, larger spikes and heavier grains should be emphasized. For
Hard Whites - higher number of tillers and grains m����� is desired, as they provide for
harder grains with higher protein content. / Graduation date: 2000
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The effects of the Mazama tephra-falls : a geoarchaeological approachMatz, Stephan E. 28 May 1987 (has links)
About 7,000 years ago two major tephra-falls blanketed the
Pacific Northwest in volcanic ash. These two tephra-falls, identified
as the Llao and climatic tephra-falls, were a part of the eruptive
events that led up to the collapse of Mount Mazama to form Crater Lake
in the southern Oregon Cascades.
The tephra-falls occurred about 200
years apart at around 7,000 years B.P. and 6,800 years B.P. for the
Llao and climatic eruptions respectively.
The effects of the tephra-falls on the flora, fauna, and people of the period have been
characterized by different researchers as ranging from minimal to
catastrophic.
In an attempt to better understand the affects of these two
events on the flora, fauna, and people, a model is presented to help
organize the various lines of research into a coherent whole and to
suggest profitable areas of research which have not yet been completed.
The model is based on ecological and anthropological theory with a
strong reliance on analogy with modern ecosystems and volcanic hazards
research.
The model makes use of the ecosystem concept as the framework
for the interaction of the abiotic, or nonliving habitat, with the
biotic, or living system. The biotic organisms are adapted to the
characteristics of the abiotic habitat and in many respects the
composition, frequencies, and distributions of biotic organisms are
determined by their tolorance levels to these characteristics. Tephra-falls act as environmental disturbances which change the abiotic
habitat of the ecosystem. Therefore, any changes caused by such
a disturbance in the abiotic characteristics that are not optimal or
are outside of the tolorance limits of the biotic (flora and fauna)
components should cause changes in the composition, distribution, and
frequency of organisms within the ecosystem. The changes brought
about by the tephra-falls may be described by successional and
evolutionary processes through analysis of pollen and faunal remains,
population demography as described by mortality profiles, and research
into the reaction of specific flora and fauna within adaptational
types to the properties of tephra-falls and the tephra as a soil
body.
The state factors used to describe the abiotic component of the
ecosystem are: time, distribution, material properties, climate, and
geomorphology. The state factor of time involves the determination
of the occurrence in time of the event(s), the duration of the event(s),
the season of occurrence of the event(s), and the residence time of
tephra in the ecosystem. This state factor is used to define the
specific point in time and duration of the effects of the tephra-fall(s) for individual ecosystems. The state factor of distribution
describes the aerial extent and thickness of the air-fall deposits.
This state factor determines the extent of the initial disturbance.
The state factor of climate describes the specific components of
rainfall, wind, and temperature which control ecosystem composition
and development, and the changes to the climate which may have occurred
due to volcanic aerosols associated with the eruption. The state
factor of geomorphology describes the location of tephra and nontephra
bodies across the landscape and through time as the tephra is reworked
by wind, water, and gravity from the initial air-fall positions. The
determination of the long term distribution of the tephra is important
in determining post-event influences on ecosystems as described by
the material properties of the tephra.
It is argued that most people were not greatly harmed by the
Mazama tephra-fall events themselves, but instead may have been
greatly affected by a loss of food resources during and after the
events. Changes in food resource availability and exploitation
locations due to the tephra-falls may have resulted in changes in
both settlement and subsistence activities. Changes in settlement and
subsistence activities may be seen in a corresponding change in
differential frequencies of functional tool types across space and
time. The kind and amount of expected changes in settlement and
subsistence systems are linked to distance from the source of the
tephra, the stability and compostion of pre-disturbance ecosystems,
the types and intensity of resource exploitation, and the amount of
variability in subsistence and settlement traits which were available
to the sociocultural system. / Graduation date: 1988
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Cultural resource protectors : a survey of federal archaeologists and cultural resource specialists in the Pacific NorthwestSchmidt, Chester Allan 26 April 1994 (has links)
There is a widespread problem with looting and vandalism of cultural resources in the Pacific Northwest. To combat this problem law enforcement must have the assistance of the archaeological community. To be able to assist law enforcement, archaeologists and cultural resource specialists must have the proper training in cultural resource law and crime prevention.
The focus of this study is to investigate the preparedness of archaeologists and cultural resource specialists within the federal government, specifically the United State Forest Service and the Bureau of Land Management, to assist in the investigation and prevention of cultural resource crime. To answer this question a survey was sent out to all of the aforementioned subjects within the Pacific Northwest. This survey asked for data concerning types of cultural resources affected by crime, prevention methods, training, opinions on quality of training, and demographic information. The respondent was also asked to reply to various fictitious scenarios concerning cultural resource crime, and the answers compared to a control group made up of law enforcement personnel.
Information obtained from this survey showed that there is a lack of training among both of these agencies. A large percentage of the respondents feel that their training was either nonexistent or was lacking in depth and quality. The ability of the subject group to make decisions concerning the fictitious scenarios was closely analogous to those made by the law enforcement group. However, from information obtained from the respondents and from analysis of other data these scenarios may not have been a good indicator of the preparedness of the subject group.
To improve their abilities at preventing and assisting in the investigation of cultural resource crimes, all archaeologists and cultural resource specialists need to have the opportunity to have access to quality training. These persons must also take it upon themselves to protect the resource using methods that are allowed by their respective agencies. / Graduation date: 1994
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Culturally appropriate supermarket nutrition education for Mexican-American familiesSaldana, Tina Marie 24 November 1992 (has links)
Graduation date: 1993
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Estimated expenditures by sport anglers and net economic values of salmon and steelhead for specified fisheries in the Pacific NorthwestSorhus, Colin 16 December 1980 (has links)
Graduation date: 1981
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Independent Filmmaking in the Pacific Northwest: A Critical Analysis of the Regional Film Landscape / Critical Analysis of the Regional Film LandscapeErickson, Mary P. A., 1977- 06 1900 (has links)
xvii, 397 p. : ill., maps. / Thousands of films are produced every year in the United States, and only a fraction of these is made by mainstream Hollywood film studios. Independent filmmakers working in regional locations produce the majority of these films, retaining financial, creative and distribution control and working with locally-based cast and crew members. This film activity must be acknowledged in order to fully understand the American film industry. This study examines regional independent filmmaking through case studies of two film communities: Portland, Oregon and Seattle, Washington. Using political economy of communication as the primary theoretical foundation, this study focuses on the infrastructure (systems, policies, resources and practices) that supports and/or limits the production and distribution of independent films. The research utilizes extensive document analysis of historical materials and contemporary documents produced by organizations and individuals, as well as a survey of 60 film professionals and interviews with over 40 film professionals. A central challenge to independent filmmaking is the term "independent," which has been contested by film professionals and scholars; therefore, this study analyzes and offers a new definition of "independent filmmaking." The history of filmmaking activity in Portland and Seattle is presented, as well as an extensive discussion of the contemporary landscape of regional independent filmmaking in these two communities. The study finds that there are a multitude of contradictions pertaining to financing, distribution, labor and myths of independent filmmaking. These contradictions present a range of opportunities and challenges that often simultaneously conflict with each other. The filmmaking communities in Portland and Seattle have notable networks of support, including professional and educational organizations, film festivals, government initiatives and a few locally-operated distributors. However, filmmakers in both cities also share challenges in financing, distribution and labor. The study argues that regional independent filmmaking has made a dynamic and influential contribution to the American film industry and cultural production but has been under-explored in academic scholarship. The research also points to the need to examine and understand the contradictions of independent filmmaking to improve the circumstances and infrastructure that support regional independent filmmaking. / Committee in charge: Dr. Janet Wasko, Chairperson;
Dr. Gabriela Martinez, Member;
Dr. H. Leslie Steeves, Member;
Dr. Michael Aronson, Outside Member
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Criteria for an effective water resource planning processBowers, James Myron January 1961 (has links)
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of City and Regional Planning, 1961. / Includes bibliographical references (leaves 171-178). / In examining the present status of water resource planning in the Pacific Northwest, numerous critical inadequacies become readily apparent. One method of minimizing some of these inadequacies is through administrative reorganization. Realizing this there have been many different reorganization proposals put forth. Along with these proposals has come much propaganda. In order to obtain a clearer picture comparative criteria were established. Upon doing this it was decided to limit the analysis to the compact, the authority and the inter-agency approaches. Upon applying the criteria to these three structures, the following conclusions were reached: 1) the compact would probably be worse than the existing setup, 2) the inter-agency committee has some value and not too many dangers, 3) the authority fulfills by far the most criteria but because of certain possible dangers should not be strived for, 4) that the criteria are useful in discovering which structures may be unacceptable but they do not tell which is the optimum one. Much is dependent upon the type of planners the structures attract. / by James Myron Bowers. / M.C.P.
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