Now showing items 8293-8312 of 15343

    • Kaamos Studies

      Alshaibi, Sama R.; Paatos, Karoliina; Shenal, Martina M.; Cerese, Vaden (The University of Arizona., 2018)
      Kaamos Studies is a multi-media thesis project that examines the experience of the darkness that falls with the polar night (kaamos in Finnish) when the sun does not rise and the adaptation to it. In the darkness, there is still an array of different kinds of lights. My focal point is the Kevo Subarctic Research Station at the northernmost tip of Finland where my parents were working as weather attendants from 1976 until 1982. They observed and measured the earth and space weather by multiple devices every three hours, every day and night. I was born there. To create the exhibition installation of Kaamos Studies I have used some of the same devices my parent did, collected material from different kinds of archives and collaborated with weather researchers and institutes in Finland. The exhibition installation consists of four light sculptures of various scale, three videos, one sunshine recorder and The Pocket Book, a handmade artist’s book. This is the written documentation of my thesis exhibition Kaamos Studies for the University of Arizona, School of Art’s Master of Fine Art’s degree.
    • Kaibab mule deer productivity estimates based on ovarian examination

      Pregler, Charles E., 1951- (The University of Arizona., 1974)
    • Kaibab squirrel activities in relation to forest characteristics

      Ratcliff, Thomas D., 1943- (The University of Arizona., 1974)
    • Kangaroo Rat Foraging In Proximity to a Colony of Reintroduced Black-Tailed Prairie Dogs

      Koprowski, John L.; Fulgham, Kirsten Marie; Archer, Steven R.; Elfring, Lisa K. (The University of Arizona., 2015)
      A majority of the arid grasslands in the western U.S. have been dramatically altered by anthropogenic influences resulting in degradation and desertification. Within the arid grasslands of North America a guild of burrowing herbivorous rodents that includes kangaroo rats (Dipodomys spp.) and prairie dogs (Cynomys spp.) is often considered integral to arid grassland maintenance. As part of the larger guild of burrowing herbivorous rodents, kangaroo rats are considered to be an important keystone guild whose role as ecosystem engineers and habitat modifiers complements that of prairie dogs. Together these species organize and structure arid grassland ecosystems and the biodiversity therein, by providing a mosaic of microhabitat patches, thus increasing overall heterogeneity. In an area where black-tailed prairie dogs (C. ludovicianus) were reintroduced, I used Giving-up Density (GUD) to assess the indirect effects black-tailed prairie dogs might have on the foraging patterns of resident kangaroo rats (D. spectabilis and D. merriamii). My objective was to compare and contrast kangaroo rat foraging GUD within and along the boundary of a on a recently established black-tailed prairie dog colony with that in the surrounding unmodified native habitat. This enabled assessment of whether black-tailed prairie dogs had an influence on the perceived quality of the habitat by kangaroo rats. Kangaroo rats visited off-colony feeding trays more frequently, and collected a greater mean mass of seed per tray as well. This indicates that the kangaroo rats perceived the area off the prairie dog colony as having a lower foraging cost than on the colony or along the colony edge. I conclude that from the perspective of the seed-eating kangaroo rat, the colony is not viewed as high quality habitat. What impact the reintroduction and management of one keystone species might have on another keystone species deserves additional consideration as we attempt to restore arid grassland ecosystems.
    • Karyotypes of selected bats (order Chiroptera)

      Osborne, Jerry Lee, 1940- (The University of Arizona., 1965)
    • Karyotypic analysis of the gobiid fish genus Quietula Jordan and Evermann

      Cook, Peter Calvert, 1950- (The University of Arizona., 1976)
    • Katherine Anne Porter: a study in the use of cultural conflict

      Mensch, Diane, 1941- (The University of Arizona., 1964)
    • Kenneth Burke's approach to language and theory construction

      Ewbank, Henry L.; Archias, Susan Dana, 1953- (The University of Arizona., 1988)
      This thesis explains the "systematic" refinement of Kenneth Burke's theoretical process through his development of a theological paradigm for the dramatistic vocabulary. It describes the merging metaphysical and dialectical issues in Burke's critical thought and locates a theoretical shift in A Grammar of Motives, where Burke posits the prototype for his key term, "act." The study then interprets the formal treatment of the prototype in The Rhetoric of Religion: Studies in Logology, and demonstrates how the derived paradigm maintains and advances the convergence of metaphysics and dialectics, and how it reestablishes the interaction between language structure and usage in two types of definition or explanation (temporal-logical, narrative-tautological). This thesis also describes the purpose and functional range of Logology.
    • Keyboard music from 1600-1750

      Coretz, Irving, 1921- (The University of Arizona., 1949)
    • Kidneys, Chemicals, and Clinics: A Political Ecology of Health in Rural Central America

      Del Casino, Vincent; Lawlor, Emma J.; Del Casino, Vincent; Banister, Jeffrey; Oglesby, Elizabeth; Pieper Mooney, Jadwiga (The University of Arizona., 2015)
      In 2008, El Salvador registered the world's highest mortality rate from kidney failure, with more than 2500 deaths annually in Central America's smallest country. El Salvador is the ground zero of a new form of Chronic Kidney Disease (CKD) that has become an epidemic among otherwise healthy agricultural workers and rural residents in lowland Central America in the past three decades. While the epidemic is believed to stem from some combination of agro- chemical exposure and/or dehydration, research on the disease remains embroiled in controversy, policy changes few, and medical support for affected individuals challenging. Foucaultian theorizations of 'discursive materiality' provide insights into the ways in which–even as the science remains inconclusive–understandings, discussions, and research on CKD in El Salvador are having material effects on individuals' bodies and health statuses. Based on fieldwork in El Salvador in summer 2014, this thesis uses the lens of Salvadorian CKD to explore the workings of biopower in settings of industrial agricultural production. Focusing on the Bajo Lempa region of El Salvador, in particular, the thesis examines the discourses, materialities, and practices through which CKD has "come to matter" as a medical and political phenomenon in relation to the agriculture through which affected Salvadorians make their living. Thinking through the discursive materialities of CKD alongside the production of spaces of health and agriculture, this thesis provides insights for the growing field of the political ecology of health by investigating the wider socio-political and environmental processes that make CKD management such a challenge in a Central America.
    • Kinematic Analysis and Inverse Dynamics-based Control of Nondeterministic Multibody Systems

      Poursina, Mohammad; Sabet, Sahand; Nikravesh, Parviz E.; Gaylor, David (The University of Arizona., 2016)
      Multibody dynamics plays the key role in the modeling, simulation, design, and control of many engineering problems. In practice, such problems may be encountered with the existence of uncertainty in the system's parameters and/or excitations. As the complexity of these problems in terms of the number of the bodies and kinematic loops (chains) increases, the effect of uncertainty in the system becomes even more significant due to the accumulation of inaccuracies. Therefore, considering uncertainty is inarguably a crucial aspect of performance analysis of a multibody problem. In fact, uncertainty needs to be propagated to the system kinematics and dynamics for the better understanding of the system behavior. This will significantly affect the design and control process of such systems. For this reason, this research presents a detailed investigation on the use of the Polynomial Chaos Expansion (PCE) method for both control and kinematic analysis of nondeterministic multibody systems.
    • Kinematic and dynamic analyses of cascades of planar four-bar mechanisms

      Nikravesh, P. E.; Tsai, Der-Liang, 1958- (The University of Arizona., 1988)
      Computer programs have been developed for the kinematic and dynamic analyses of cascades of planar four-bar mechanisms. Since the analytic approach has high efficiency and accuracy in computation, a chain of four-bar linkages is developed horizontally and vertically by using the relative coordinates and the absolute coordinates, from which the explicit equations and the simultaneous equations are respectively derived in the kinematic analysis. In this analysis, the actions of transmission of linkages, from left to right, from right to left and from lower to upper, are performed by the image method and transformation procedures. Based on the kinematic analysis, the dynamic analysis is also developed by using both sets of coordinate systems. The generalized equation of motion, the general form of Lagrange's equations, Lagrange multipliers and the theorem of power balance are used to construct various formulations of the governing equations of motion for some particular problems. The problem of a linkage with a moving frame (the ground link) is the most interesting focus in this analysis.
    • Kinematics of deformation at the southwest corner of the Monument uplift

      Kiven, Charles Wilkinson, 1949- (The University of Arizona., 1976)

      LUKENDA, KRISTINA (The University of Arizona., 2002)
    • Kinetic Green Wall System Applications on Reducing Carbon Emissions in Hot-Arid Climates

      Chalfoun, Nader; Sanchez, Monica Mercedes; Chalfoun, Nader; Moeller, Colby; Ida, Aletheia (The University of Arizona., 2017)
      The goal of this work was to apply an operable green façade wall system in order to analyze the benefits of vegetative surfaces in relation to hot arid urban climates. A second layer of information was also analyzed to provide an alternative to electricity. This method was used to actuate the operable green façade passively to enhance sustainable environmental strategies. Carbon emissions, temperature and relative humidity were evaluated in a hot arid climate on a kinetic green wall system physical scale model. Computer simulation provided insight to daylight, shading and solar irradiance within a mock up building. The results of these factors may be a useful tool to implement in building design for these climatic zones.

      Tudor, Marcia Ann. (The University of Arizona., 1983)