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      • The Maoist Soundscape: Sonic Politics in the People’s Republic of China, 1949-1976

        Lovell, Joseph M University of California, Santa Barbara ProQuest D 2022 해외박사(DDOD)

        RANK : 2591

        This dissertation examines the technologically mediated developments in the relationship between the Party and the People in Mao era China (1949-1976). With a focus on audio technology (radios and loudspeakers), and drawing from sound studies, media studies, and 20th century Chinese history studies, it explores the soundscape of the period, in order to understand how the proliferation of amplified sound, combined with the unique nature of the Party’s propagandizing, to forge a new form of sonic politics for New China. Chapter One focuses on Tiananmen Square parades and rallies, and the ways in which a new political culture was shaped by the Party’s application of sound media at these events, and the emotionally charged vocal responses from the People. Chapter Two broadens the scope of the inquiry by examining the nationwide construction of the Party’s sonic infrastructure in the 1950s, and considering the Party’s aspirations as well as the challenges it faced in attempting to transmit its new political culture through sound media. Chapter Three turns to the actual content that was broadcast across the sonic infrastructure, paying attention to the usage of loudspeakers in the education system, as well as the Party’s manipulation of sound effects and noise to spread propaganda and provoke appropriate emotional responses from listeners. In Chapter Four I explore the ways in which individuals reacted to extreme loudness and targeted sonic harassment in the soundscape, and consider the specific qualities of the loudspeaker that made it a useful tool for maintaining control over bodies, space, and time. Chapter Five broadens the scope of the soundscape study once more to analyze international perspectives on the Party’s usage of sound media, which centered on accusations of “brainwashing,” as well as the Party’s attempts to construct a “sound wall” around the People, by campaigning against the Voice of America. The dissertation, as a whole, constructs an overview of the Mao era soundscape, which illustrates that despite various points of failure and weakness in the PRC’s sonic infrastructure in this period, the application of sound media was integral in shaping and circulating a new political culture, and in forming new bonds between the Party and the People.

      • Gender differences in the patterns and consequences of occupational-career interruptions: A comparative analysis of the United States, Sweden, and Poland

        Lovell, Rachel E The Ohio State University 2007 해외박사(DDOD)

        RANK : 2591

        Occupational careers are usually modeled as continuous. However, most careers are not incessant, but, in fact, are characterized by periods of disruptions. Thus, contrary to the research practice, interruptions should be integrated into models of status attainment. To fulfill such a goal, this dissertation addresses the following research question: are there cross-national gender differences in the patterns and consequences of occupational-career interruptions?. Occupational-career interruptions include unemployment, illness/disability, parental leave, household time, care for other, schooling, retirement, and military service. To account for some cross-national differences pertaining to institutional arrangements, I analyze panel survey data for the U.S. (a capitalist state), Sweden (a welfare state) and Poland (a post-communist country, adjusting to democratic capitalism). Three panel surveys are used for the analyses---for the NSLY-79 (U.S.), HUS (Sweden), and POLPAN (Poland). Statistical techniques applied to these data range from descriptive statistics to change models. The results provide evidence that there is a gendered nature to most occupational-career interruptions. Interruptions can be gender-neutral (schooling, retirement, unemployment, and illness), female-specific (parental leave, household time, and caring for others), or male-specific (military service). Women and men do experience variation in the consequences of the interruptions, depending on the type of interruption and the institutional context. There appears to be the greatest amount of gender equality in the wage consequences for unemployment and illness in Sweden, the least amount of gender equality in Poland, and in the United States, there is less gender equality than in Sweden but more than in Poland. Theoretical and policy implications conclude the dissertation.

      • Total variation of Gaussian processes and local times of associated Levy processes

        Lovell, Jonathan R City University of New York 2009 해외공개박사

        RANK : 2591

        Results of Taylor and Marcus and Rosen on the total variation of Gaussian processes and local times of associated symmetric stable processes are extended to a large class of symmetric Levy processes. In this extension, the increments variance sigma2(h) of the Gaussian process is generalized to a regularly varying function with index 0 < alpha < 2. The total variation function ϕ(·) is generalized to 4x=r -1x2log +log1/x . where sh=b hrh =bhha exp1h eu udu. where 0 < alpha < 1, limh →0beta(h) = 1 and limu →0 epsilon(u) = 0.

      • The potential for adaptation in the model plant, Arabidopsis, and its close relative, Boechera

        Lovell, John Thomson Colorado State University 2014 해외박사(DDOD)

        RANK : 2591

        Populations of a species are found across diverse environments. Frequently, evolutionary responses to varying natural selection pressures across environments cause adaptive differentiation among populations. For plants with limited dispersal capability, adaptation is the primary way populations can persist through changing environments and climates. Therefore, factors that constrain adaptation can directly affect the conservation status and future distributions of species and populations. Contemporary adaptations, via either selection on standing genetic variation or new beneficial mutations that sweep to fixation, have been observed across many taxonomic groups. However, these events of fast, streamlined adaptive evolution may be rare. Instead, adaptation is often constrained by both ecological and genetic forces. Determining the mechanisms and ecological manifestations of adaptive constraint remains a major challenge for evolutionary biologists, conservation biologists and crop breeders. The primary goal of my dissertation research is to address this challenge. The research projects described herein documented the extent and causes of evolutionary constraint by accomplishing three separate goals: (1) to document genes underlying drought adaptation in the model plant, Arabidopsis thaliana, to infer the adaptive effects of pleiotropy, (2) to determine the mechanisms constraining adaptation in rare species relative to widespread congeners, and (3) to assess the degree of adaptive differentiation across the genomic loci and populations. By measuring quantitative and molecular diversity across several species, I determined the relative potential of adaptation at the gene, population, and species levels of organization. In chapter 2 I studied adaptation at the gene-level and demonstrated that the Arabidopsis thaliana gene FRI (FRIGIDA) exhibits adaptive pleiotropy. Through simultaneous genetic effects on many traits, variation at the single gene FRI produces trait correlations along an axis that is in line with the vector of selection. In this case, sequence polymorphism at FRI caused phenotypic co-variance of water-use-efficiency (WUE), relative growth rate and timing of flowering. This genetic correlation coincided with a well-described adaptive correlation found in natural and agricultural systems. In chapter 3, I studied the processes that cause range size diversity across species, by comparing population ecology and genetics of species with broadly divergent range sizes. I assayed the heritability of potentially adaptive traits and other quantitative genetic statistics from multiple rare and widespread species and found that rare species lack heritable genetic variation and physiological plasticity. Combined, these factors place rare species at increased risk of extinction across changing environmental conditions. In chapter 4, I studied adaptation at the population level. I examined how environmental variation impacted genomic structure, selection pressures and local adaptation in Boechera spatifolia (Brassicaceae), a species that contains both sexual and asexual (apomictic) individuals. I found that, despite occupying sympatric sites, apomictic lineages are both phenotypically and genetically distinct from sexuals. Additionally, while sexual populations formed strong clines (both genomic and physiological) along latitude and elevation gradients, apomicts showed no such signature of local adaptation.

      • Soybean response and weed control with flumioxazin, and sorption, degradation, and weed control with isoxaflutole

        Lovell, Sarah Taylor University of Illinois at Urbana-Champaign 2000 해외박사(DDOD)

        RANK : 2591

        The new herbicides flumioxazin and isoxaflutole were characterized on the basis of the particular areas of research which require special attention. Flumioxazin is a new herbicide for potential use in soybean and peanut to control important broadleaf Flumioxazin was compared to sulfentrazone for phytotoxicity on fifteen soybean varieties in a greenhouse study and four varieties in the field. Weed control with flumioxazin was also evaluated in field studies in 1998 and 1999 at Urbana and Dekalb. Preemergence applications of flumioxazin or pendimethalin alone or in combination were followed by postemergence applications of glyphosate, imazethapyr, and imazamox. Isoxaflutole is a new herbicide for selective use in field corn to control a wide range of grass and broadleaf species. It exhibits a new mode of action, inhibition of 4-hydroxyphenylpyruvate dioxygenase, an enzyme found in the pathway for carotenoid biosynthesis. In field studies conducted in 1998 and 1999 at Urbana and Dekalb, a wide range of isoxaflutole rates were tank-mixed with S-metolachlor/atrazine to compare velvetleaf density, weed control, corn injury, and corn yield. Herbicide applications were made at three different timings: early preplant, preplant incorporated, and preemergence. The environmental fate of isoxaflutole was characterized in sorption and degradation studies. In a qualitative kinetic evaluation, the hydrolysis of isoxaflutole was found to be more rapid in a soil solution than in a soil-free system. The sorption of isoxaflutole was 6 to 12-fold greater for isoxaflutole than diketonitrile based on Freundlich K<sub>d</sub> values calculated from batch isotherms. The effect of moisture, temperature, and biological activity on isoxaflutole degradation was investigated in 56-day laboratory incubations. In the soil, isoxaflutole rapidly hydrolyzed to diketonitrile, which was subsequently metabolized to the inactive benzoic acid derivative. Degradation was moisture and temperature dependent. In sterile soil, the conversion of isoxaflutole to diketonitrile was similar to non-sterile soil, but the transformation of diketonitrile to benzoic acid and the production of unknown products were greatly reduced.

      • An investigation into the kinetic behavior and polymer relaxation of dental resins and other dimethacrylate networks

        Lovell, Lale G University of Colorado at Boulder 2001 해외박사(DDOD)

        RANK : 2591

        The copolymerization of bis-GMA (2,2bis[4-(2-hydroxy-3-methacryloyl-oxypropoxy)phenyl]-propane) and the reactive diluent TEGDMA (triethylene glycol dimethacrylate) is often used as the organic phase of dental restorative materials. A detailed analysis of the bis-GMA/TEGDMA system was undertaken to understand the underlying polymerization mechanism and network formation of this complex dimethacrylate copolymerization. Kinetic studies were performed using photo-differential scanning calorimetry to analyze the effects of cure condition and comonomer composition on the polymerization behavior. Furthermore, hydrogenated species were used to probe separately the effects of viscosity and monomer structure on the reaction kinetics. The copolymerization was shown to exhibit strong diffusion controlled kinetics, and the bis-GMA constituent was proven to be vital to the rapid cure times exhibited by these dental resins. Furthermore, the structural property evolution of these highly crosslinked systems was investigated using both static and dynamic mechanical analysis techniques. By using iniferter, or “living” radical polymerizations, partially cured networks without any trapped carbon radicals were created. This method allowed for materials testing as a function of both conversion and temperature without any additional cure upon heating. Furthermore, near-IR spectroscopy was employed to monitor the cure rate and final double bond conversion of the exact polymer samples subsequently used for mechanical testing. The investigations showed that the glassy networks formed are very heterogeneous in nature with mechanical properties that are a strong function of final double bond conversion, but independent of the initiation type and rate. In addition to investigating the mechanical properties of highly crosslinked dental resins, this work also probed the network formation of other dimethacrylate systems. Parameters such as kinetic chain length, crosslinking density, and heterogeniety were manipulated to determine how variations in the polymerization environment affect the evolution of structural properties. Near-IR spectroscopy, dynamic mechanical analysis, and dielectric spectroscopy were employed to monitor the developing networks. The results show that loosely crosslinked networks are affected by the kinetic chain length, and that the unique micro-environments of heterogeneous networks aide in the development of polymers with high glass transition temperatures.

      • Some aspects of the biomechanics of articular cartilage repair

        Smith, Christopher Lovell Case Western Reserve University 2001 해외박사(DDOD)

        RANK : 2589

        The sensitivity of the affects of indenter radius, defect depth, cartilage permeability and flow boundary conditions, on the indentation testing of a repairing osteochondral defect was investigated. Since the boundary condition on the flow across the cartilage repair-subchondral bone interface is not known, the effects of two different conditions were investigated: free-flow and no-flow. A poroelastic finite element model of an osteochondral defect at different stages of the repair process was developed using dimensions typical of the rabbit knee. Results showed when the radius of the indenter was much less than the thickness of the cartilage the sensitivity of the indentation displacement to flow boundary conditions decreased. Simulated indentation displacement was insensitive to bone regeneration up to 50% of the initial defect depth, which suggests that only the properties of the material in the upper half of the defect are being evaluated. Small variations in permeability had little affect on the simulated indentation. In a fully repaired defect, the simulated indentation is independent of the boundary condition. It was concluded that the boundary condition on the repair-subchondral bone interface must be known in all cases except when the defect approaches full repair, if accurate estimates of material properties are to be obtained from indentation. Little is known of the mechanical environment in osteochondral defects that are being developed to repair areas of damaged cartilage. Since the mechanical environment in a repair cannot be measured, a finite element model of joint contact with an osteochondral defect was developed and used for this purpose. The stress and strain distributions at several stages of tissue repair were evaluated. Variations of normal and radial stresses and strains were greatly increased as the stage of repair increased. The large differences between 0% repair and 100% repair suggest that the initial mechanical environment in a repairing osteochondral defect is vastly different from that in a normal cartilage layer. Hydrostatic pressure of the interstitial fluid is considered to be an important mechanical determinant by resisting compressive force applied on the cartilage surface. An existing hydrostatic pressure system was evaluated, redesigned as needed and validated. The redesigned pressure chamber was able to reach a maximum pressure of 11.2 MPa and is capable of applying different levels, durations, and frequencies of compression.

      • Natural designs: Skepticism, romanticism, and religion from Hume to Austen (David Hume, Jane Austen)

        Jager, Colin Lovell The University of Michigan 2000 해외박사(DDOD)

        RANK : 2589

        Romantic criticism has assumed that romanticism, as the first “moment” of modernity, inaugurates a narrative of secularization. Yet the fragmentation and compartmentalization of human experience that we associate with modernity does not obtain for the romantic era. By interpreting romantic-era texts through the lens of the argument from design, this dissertation revises the secularization thesis. The popular hegemony of design during the romantic age is a result of its ability to respond to both skeptical critique and social and political events. Located at the convergence of public and private, design offers to mediate between science and religion, between institution and individual, between general and particular—in short, between those very things that modernity claims to drive apart. Through readings of eighteenth century and romantic writers—David Hume, Anna Barbauld, Samuel Taylor Coleridge, William Paley, William Wordsworth, and Jane Austen—this dissertation explores the various means by which design moves from a theological argument to a site of ideological and formal transformations. Understanding this shift as taking place at the intersection of the social and the personal, this study analyzes how designedness is worked into romantic cultural production.

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