Now showing items 15403-15422 of 15436

    • Y chromosome polymorphisms and the peopling of the Americas

      Hammer, Michael F.; Vuturo Brady, Jennifer Ann, 1966- (The University of Arizona., 1996)
      Polymorphisms at four paternally-inherited loci (DYS287, SPY1, DYS199 and DXYS156) were surveyed in twenty-seven populations (n = 997) world-wide to trace the origins of Native Americans. One of the haplotypes (6) is found at relatively high frequencies in all seven Native American populations representing two of the major linguistic divisions in the New World. The same haplotype was found at low frequencies in Siberian Eskimos and was absent from eleven other Asian populations. A second haplotype (7) was present at high frequencies in all the Native American and several Siberian populations. It was present at moderate frequencies in European populations and at low frequencies in several Asian populations. These data best support the hypothesis of a single male-mediated migration wave for the early peopling of the Americas, although a multi-wave hypothesis is not rejected.
    • Yasuo Kuniyoshi: his life and art as an Issei

      Fujikawa, Fujie, 1949- (The University of Arizona., 1990)
    • Years of Life Lost (before they can ossify)

      McMahon, Ellen; Kaufmann, Dorsey Bromwell; Ramírez-Andreotta, Mónica; Coleman, Aaron S.; Widdifield, Stacie (The University of Arizona., 2020)
      The forced extraction of raw materials and life forms from the Earth’s biosphere sustains human feats of modernity. From precious metals to fossil fuels, from copper to uranium, and the rare earth minerals essential to modern infrastructure and electronics, the history of mining is deeply rooted in the unfolding sociopolitical climate of the Sonoran Desert. By transforming ore into commodities, corporate mining throughout the Sonoran Desert has been a source of immense wealth for some, but has also led to waste, environmental contamination, illness and premature death in rural, low-income, predominantly communities of color. Years of Life Lost (before they can ossify) is a multimedia art installation that visualizes this toxic aftermath through slag rock, a mining byproduct left behind in massive mounds of waste, and glass bones that both represent the years of life lost by people living near waste due to the harmful chemicals that enter their body without their consent. The promise of industrialization to modernize and improve our lives is contrasted with the reality of the underlying intentions of corporate operations that produce and prioritize value in monetary form while devaluing and harming ecosystems necessary for life and the environmental health of local communities. The state’s supporting role is revealed through a mathematical calculation used in policy decision-making that figures the years of life lost in relation to human productivity and profit. Within the exhibition, the viewer is witness to the political and economic forces that are enmeshed in constellations of flesh, tissue, rock, bone, soil, and precious moments of life that were never lived.
    • Yemen's Migrant Networks as Critical Factor in Political Opposition to the Imamate

      Hudson, Leila; Hertzman, Rachel; Farwaneh, Samira; Lucas, Scott; Marston, Sallie (The University of Arizona., 2013)
      Nineteenth and twentieth century migratory networks had a formative, yet unrecognized, impact in the lead-up to the 1962 establishment of the Yemen Arab Republic. Migrants from Northern Yemen to Aden built discursive spaces for contesting economic and political oppression that served as a foundation for later channels of political dissidents and reformists to oppose the Imamic regime, often walking a tightrope between their own calls for reform and the interests of foreign state actors. Those spaces were preserved in the later development of similar networks after 1962 and paved the way for generations of migrants to contest or advance reigning economic and social orders via labor migration to oil-rich states.
    • Yield and physiological aspects of 17 varieties of corn grown in runoff farming

      BassiriRad, H.(Hormoz); Stroehlein, Jack L.; Matthias, Allan D. (The University of Arizona., 1984)
      A micro-catchment water harvesting agrisystem in Avra Valley, west of Tucson, Arizona, was utilized to grow 17 varieties of drought tolerant corn (Zea mays). The primary objective of this study was to isolate and evaluate the grain yield performance of these cultivars. Additional measurements were also taken on transpiration rate (TR), leaf water potential (0), stress degree day (SDD), and crop water stress index (CWSI), during the period 24 October to 2 November, between two irrigations, in search of possible physiological mechanisms of drought adaptability and their impact on production. The system's performance in terms of economical crop growth is subject to further research. The analysis of grain yield indicates a significant varietal difference. Physiological parameters monitored also show trends of differences among cultivars. It was found that cultivars capable of maintaining a higher plant water content, by preserving their TR, Ψ1, CWSI, and SDD are not necessarily the better yielding cultivars. Possible justifications of this phenomena are discussed. It is suggested that a distinction has to be made between crop adaptability to drought and preservation of a high grain yield since under limited moisture conditions, one might be attained through the suppression of the other.
    • Yield and quality evaluation of fresh and thermally processed desert grown tomatoes

      MohamedAhmed, ElBushra ElTayeb, 1946- (The University of Arizona., 1978)
    • Yield and value of wild-land resources of the Salt River watershed, Arizona

      Cooper, Charles F.,1924-; Humphrey, Robert; Barr, George (The University of Arizona., 1956)
    • Yield risk in wheat production: A policy study for the Alentejo of Portugal

      Dahlgran, Roger; Trindade, Graca Maria dos Santos, 1955- (The University of Arizona., 1990)
      This study attempts to determine whether or not Portuguese wheat policies have resulted in a stabilization of the wheat price and/or the stabilization of income for wheat growers in the Alentejo region. It was found that these policies have contributed to a stabilization of price rather than a stabilization of income. It was also found that the income variability caused by yield variability was greater for the Alentejo farmers than that for the country as a whole. Weather uncertainties measured by rainfall were found to be a major source of that variability in both area and yield equations. Therefore, it was concluded that rainfall is significant in explaining variations in wheat supply and cannot be eliminated from the model specification. Finally, this study looked at a policy that would stabilize output returns to Alentejo farmers since high yield variability will continue to constrain farmers' willingness to invest in wheat production. An insurance program may be the policy to implement in this region since yield risks are the predominant source of income variability. However, the cost of financing an agricultural insurance scheme as well as the delineation of homogeneous areas are crucial determinants to the success of an all-risk insurance program.
    • Yield studies on Arizona hybrid #1, buffalo gourd

      Wilkins, Mary Helen (The University of Arizona., 1980)
    • Yoknapatawpha County: Faulkner's battleground for modern man

      Haworth, Roberta, 1938- (The University of Arizona., 1968)
    • YOR: A yield optimizing routing algorithm by minimizing critical areas and vias

      Kuo, Sy-Yen; Chang, Ting-Mao, 1962- (The University of Arizona., 1991)
      Traditionally, the goal of channel routing algorithms is to route the nets with as few tracks as possible to minimize the chip area and achieve 100 percent connection. However, the manufacturing yield may not reach a satisfactory level if care is not taken to reduce the critical areas which are susceptible to defects. Our approach is to systematically eliminate critical areas by floating, burying, and bumping net segments as well as shifting vias. The yield optimizing routing (YOR) algorithm also minimizes the number of vias since vias in a chip increase the manufacturing complexity which again degrades the yield. The algorithm has been implemented and applied to benchmark routing layouts in the literature. The experimental results show that large reduction in the number of critical areas and significant improvement in yield are achieved, particularly for practical size channels such as the Deutsch's difficult problem.
    • You Too Can Be a Rebel

      Garber, Elizabeth; Garibaldi, Lino Paúl; Garber, Elizabeth; Hochtritt, Lisa; Sharma, Manisha (The University of Arizona., 2017)
      The blurred lines between the domains of art, education and art education create tensions that impact how art educators negotiate their identities (Baxter, Ortega López, Serig & Sullivan, 2008) within themselves and through a myriad of complex relationships with society and the natural world. I reflect upon the profound transformations of my theoretical and methodological framework of pedagogy emerging from my academic, artistic and professional experiences, particularly my exposure to twentieth century philosophy, post-modernism, critical pedagogy, democratic education, feminist theory and queer studies, each through the lens of social justice. I draw from the ideas of thinkers—Goodman, Lorde, Deleuze, Freire and Zolla, amongst many—who, in one way or another, embraced an integrative dialectic of difference rather than fearing or rejecting conflict, opposites and contradictions. In the twenty-first century, this exploration of the interspace has resulted in arts-based theoretical and methodological approaches to inquiry (Rolling, 2013) such as studio art as research practice (Sullivan, 2004), a/r/tography (Springgay, Irwin & Kind, 2005), and productive ambiguity (Shipe, 2015). This thesis is an arts-based autoethnography, intended to embody the dual nature of the identities and practices of artists/teachers through the creation of an artistic product. Carolyn Ellis and Arthur P. Bochner pointed to the three axes of autoethnography: the self (auto), culture (ethno) and the research process (graphy); modes of autoethnography fall along different places within these continua (Ellis & Bochner, 2000). While I place the strongest focus on my experience and culture, I also stress the relevance and rigor of the research process. Drawing inspiration from the amazing work of Nick Sousanis and Rachel Branham, I include extensive notes and references at the end of the thesis. The prologue is formatted as an illustrated novel—a blueprint for a full graphic novel version of this thesis. The rest of the manuscript is a literary autoethnography, by which I assume the identity of an autobiographical writer foremost.
    • A young child interacting with written language in a print-oriented society

      Haussler, Myna M. (The University of Arizona., 1977)
    • Young children's perceptions of social support

      Woulbroun, Emily Jeanne, 1965- (The University of Arizona., 1992)
    • Your People Shall be Your People: What the Belt Road Initiative Should Learn from Xinjiang’s History and Present

      Ren, Hai; Patterson, Eric; Diao, Wenhao; Lanza, Fabio (The University of Arizona., 2022)
      This thesis will examine the potential effects the Belt and Road Initiative on locals, especially the poor and ethnic minorities, in Xinjiang. The work discusses four main and inseparable themes that speculates what may happen specifically to the people in Xinjiang, a region that remains a priority for economic modernization, due to the Belt and Road Initiative. These include, but are not limited to, ethnic minority social unrest, international geopolitics, forced migration, and lastly trade. By analyzing history, prior large-scale projects throughout the frontier, previous and current government policies, and the region’s cultural dynamics I interpret how biopolitical strategies are being used as tools to control ethnic minority regions, as well as providing new methods to strengthen China’s domestic security. I also explain how the BRI, and the Chinese government, can foster ethnic inclusivity for a more wholistic social model of development. My process of a social operating model would run parallel to the economic model of development, which can lead to a less divisive future for the Belt and Road Initiative.

      Olson, Gerald Wayne. (The University of Arizona., 1984)