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      • 브랜드명성과 관여도에 따른 다차원 원산지의 중요도

        LI, OU 忠北大學校 2015 국내석사

        RANK : 247583

        To maximize the profits, companies often manufacture in different countries, making product’s Country-of-Origin multi-dimensions. According to this, the purpose of this study was to analyze the effects of brand reputation and involvement on multi-dimensions of country-of-origin importance. A survey with 275 samples is conducted to verify the effectiveness of the study. Data was analyzed by conjoint analysis and t-test analysis. The results of this study are as follows. First, the COO of Design is relatively more important in high reputation brand products than those of low reputation, while COO of Manufacture shows an opposite results. Although low reputation brand is relatively more important than high reputation brand in COO of Part, but the related t-test statistic is not significant. Secondly, High involvement think product is relatively more important than low involvement feel product in COO of Manufacture while low involvement think product is relatively more important than high involvement feel products. We found no significant difference in the relative importance of part of products. Contributions of this study are as follows. First, in theory the brand reputation and involvement not only take an effect on Country-of-Origin but also on multi-dimensions of Country-of-Origin, which provides a more accurate result for future research. Further more, when analyzing the effectiveness of the Country of Origin, researchers should not just research on one or several products but also on the classification of the products. In practice, a specified manufacture strategy should be designed according to the different band reputation. If the brand reputation is high, then consumers have a higher confidence in product quality, and then COO of Design shows more importance compared to the COO of manufacture. The product classification is needed when market manager wants to propose a COO strategy. According to different products characteristics, a proper COO strategy can be designed, which can greatly help company to reduce manufacturing cost.

      • Relational trust and knowledge sharing: An investigation of principal trust and school social networks

        Liou, Yi-Hwa The University of Wisconsin - Madison 2010 해외박사(DDOD)

        RANK : 247343

        Trust among teachers is an important aspect of the capacity for reform in schools. In previous research, trust has traditionally been considered as a monolithic variable that characterizes this special element as a relationship across a school (Bryk & Schneider, 2002, 2003; Goddard, 2003; Kochanek, 2005). However, this study proposes that the trust necessary for instructional improvement is best understood as either a process of holding certain perceptions and anticipation of the reliability of the other party or as a product of accumulated opportunities for meeting professional obligations within professional learning communities (PLCs). Little research has explored the relationship between teacher-principal trust and the pattern of professional interactions among teachers and the principal. Using social network data on the professional relations between teachers and principals in four Midwestern K-6 schools, this study explores how social capital (Coleman, 1988, 1990) is distributed differently among teachers and the principal by school PLCs. A review of literature on trust and social capital reinforces the importance of school leaders that promote higher levels of trust among the teachers. Social capital as a concept and social network analysis as an instrument have been used in the field of education but seldom have they been applied to examine the relationships between principals and teachers. Findings of this study suggest that: (1) the effect of teachers' trust for the principal becomes less important when distributed leadership is present across major human resources that are visible and accessible for teachers; (2) the effect of principal leadership on influencing instructional capacity in PLCs can be seen through these kinds of social network analyses (Borgatti, Everett, & Freeman, 2002); and (3) the presence or absence of trust between teachers and principals around subject matter point toward areas where leaders and teachers bridge existing expertise to address new problems of instructional improvement.

      • Ecotourism cultural impact analysis

        Liou, Gwo-Bao Michigan State University 2013 해외박사(DDOD)

        RANK : 247343

        Ecotourism is one of the fastest growing segments of tourism, and is sometimes situated in the natural settings of the traditional homelands of indigenous peoples. Numerous tourists have visited indigenous ecotourism destinations to appreciate indigenous peoples' unique cultures. Nevertheless, uncertain, unexpected, and undesired cultural impacts may result when tourists and indigenous people directly interact with each other. In addition, ecotourism development that does not respect indigenous values and customs or overexploits may cause undesired cultural impacts and consequently endanger the indigenous culture. Accordingly, it is crucial to understand ecotourism-induced cultural impacts and the mechanisms that work to create cultural impacts from ecotourism. But little research provides explanations for the mechanisms forming ecotourism-induced cultural impacts. The primary problem of the study was to examine the relationships among acculturation, ecotourism, and cultural impacts to understand the ecotourism acculturation mechanism that shapes ecotourism cultural impacts. A drop-off and pick-up survey was conducted in the Saviki Community for data collection with 321 usable questionnaires (achieved 92.5% response rate). Structural Equation Modeling (using the Mean- and Variance-adjusted Weighted Least Square estimation) was employed to examine the hypotheses of relationships including direct and indirect effects among the five constructs of the study (i.e., cultural self-identification, personal cultural exposure and interaction, perceived positive cultural impact, perceived negative cultural impact, perceived conformity to principles of indigenous ecotourism and ecotourism). Results showed that residents' cultural self-identification had negative direct and indirect effects on the residents' perceived positive cultural impact. Residents' personal cultural exposure and interaction with tourists had positive direct and indirect effects on the residents' perceived positive cultural impact. Residents' perceived ecotourism development that conformed to indigenous ecotourism and ecotourism principles positively affected the residents' perceived positive cultural impact. Residents' cultural self-identification negatively affected but residents' personal cultural exposure and interaction positively affected the residents' perceived ecotourism development that conformed to indigenous ecotourism and ecotourism principles. These findings contributed to a better understanding of the ecotourism acculturation mechanism that shapes ecotourism cultural impacts, which can be applied when devising management strategies for cultural impact protection in ecotourism destinations. The study also examined the relationships between the indicators of the degree of acculturation and the indicators (i.e., an assimilation-related indicator, an integration-related indicator) of the definitions of the degree of acculturation. Results revealed that one acculturation indicator, ethnic identity, had a significant and positive relationship to the assimilation-related indicator. Three acculturation indicators (i.e., ethnic identity, music preference, friends' ethnic groups) had a significant and positive relationship to the integration-related indicator. These indicators reflected the definition of assimilation and integration well; hence, they are suitable to be employed to estimate the degree of assimilation and integration in future acculturation-related research.

      • The regulation and function of hematopoietic progenitor kinase-1 in antigen receptor signal transduction

        Liou, Jen University of California, San Francisco 2001 해외박사(DDOD)

        RANK : 247343

        HPK1 is a Ste20-like serine/threonine kinase expressed in hemapoietic cells. It contains proline-rich motifs that have been shown to bind to several SH3 domain-containing adaptor proteins, and has been implicated as an upstream regulator of MAP kinase cascades. However, its regulation and function in physiological pathways are poorly understood. Here, I demonstrate that HPK1 plays a novel role in antigen receptor signaling. The catalytic activity of HPK1 was rapidly and greatly induced following antigen receptor stimulation in both T and B lymphocytes. Studies with mutant lines of Jurkat T leukemic cells and gene-targeted DT40 B cells revealed that HPK1 activation was dependent on the presence of Src and Syk families of protein tyrosine kinases, as well as the adaptor proteins LAT, SLP-76, BLNK, Grb2, and Grap. Biochemical approaches further demonstrated that HPK1 was complexed with Grb2 and Grap in T cells. Following stimulation, it became associated with SLP-76 and LAT. The inducible association of tyrosine phosphorylated HPK1 with the SH2 domain of SLP-76 was required for the full activation of HPK1. These observations suggest a model for HPK1 activation by the TCR, in which HPK1 is recruited to tyrosine phosphorylated LAT via Grb2, where it can be tyrosine phosphorylated and thereby bind to the SH2 domain of SLP-76, which leads to the full induction of HPKl catalytic activity. Surprisingly, overexpression of HPKI suppressed TCR activation of ERK2 and AP1, whereas a kinase-inactive HPKI mutant potentiated these responses. Neither form of HPKI affected PMA- or v-Ras-mediated activation of AP-1 and ERK2. Thus, HPK1 negatively regulates AP-1 at a step proximal to Ras activation in the T cell receptor signaling pathway.

      • Topological Quantum Phase Transitions and Quench Dynamics

        Liou, Shiuan-Fan ProQuest Dissertations & Theses The Florida State 2019 해외박사(DDOD)

        RANK : 247343

        Topological phases of matter and the phase transitions between them have been the focus of much recent theoretical and experimental interest. In this thesis, we firstly study a type of topological phase transitions between quantum Hall states driven by pairing interactions through Feshbach resonances. Although quantum Hall effects were first discovered in electronic condensed matter systems, this type of phase transitions was proposed to ultra cold atom field for their ability of the control of interactions. In addition, we also investigate the quench dynamics of topological phase transitions based on specifically Haldane model and checkerboard model in the second part.In the study of topological phase transitions between fermionic integer quantum Hall (FIQH) and bosonic fractional quantum Hall (BFQH) phases, we first provide a general picture of this kind of quantum Hall phase transitions. Subsequently, we use exact diagonalization to study the quantum phases and phase transitions when a single species of fermionic atoms at Landau level filling factor 館f = 1 in a rotating trap interact through a p-wave Feshbach resonance. We show that under weak pairing interaction, the system undergoes a second order quantum phase transition from 館f = 1 fermionic integer quantum Hall (FIQH) state at positive detuning, to 館b = 쩌 bosonic fractional quantum Hall (BFQH) state at negative detuning. However, when the pairing interaction increases, a new phase between them emerges, corresponding to a fraction of fermionic atoms stay in a coherent superposition of bosonic molecule state and an unbound pair. The phase transition from FIQH phase to the new phase is of second order and that from the new phase to BFQH phase is of first order.Furthermore, we investigate the quantum phases and phase transition in a system made of two species of fermionic atoms that interact with each other via s-wave Feshbach resonance, and are subject to rotation or a synthetic gauge field that puts the fermions at Landau level filling factor 館f = 2. We show that the system undergoes a continuous quantum phase transition from a 館f = 2 fermionic integer quantum Hall state formed by atoms, to a 館b = 쩍 bosonic fractional quantum Hall state formed by bosonic diatomic molecules. In the disk geometry we use, these two different topological phases are distinguished by their different gapless edge excitation spectra, and the quantum phase transition between them is signaled by the closing of the energy gap in the bulk. Comparisons will be made with field theoretical predictions, and the case of p-wave pairing.In the second part of this thesis, we study the dynamics of systems quenched through topological quantum phase transitions and investigate the behavior of the bulk and edge excitations with various quench rates. Specifically, we consider the Haldane model and checkerboard model in slow quench processes with distinct band-touching structures leading to topology changes. The generation of bulk excitations is found to obey the power-law relation Kibble-Zurek and Landau-Zener theories predict. However, an anti-Kibble-Zurek behavior is observed in the edge excitations. The mechanism of excitation generation on edge states is revealed, which explains the anti-Kibble-Zurek behavior.

      • Equals, Relatives, and Kin: Growing Intergenerational Solidarity between Youth Activists and Their Adult Accomplices

        Liou, Aleks Mingsheng Columbia University ProQuest Dissertations & These 2022 해외박사(DDOD)

        RANK : 247343

        This non-traditional dissertation surfaces how youth activists and their adult accomplices build intergenerational solidarity and challenge age-based power dynamics in their social movement collectives. These questions are investigated from the perspective of 10 youth organizers involved in counterhegemonic organizing movements in the United States, as well as 10 of their chosen adult accomplices. Through semistructured interviews and participatory multimodal methods, youth and adult organizers demonstrate that their solidarity relationships are forged through establishing trust and safety and processes of demonstrating mutuality and reciprocity. Furthermore, youth and adults navigate and attend to adultism in their organizing by participating in processes of naming power dynamics, checking for consent, and co-creation. This research contributes to a bottom-up understanding of youth organizing praxis in relation to larger cultural discourses and adultist systems, while identifying practical implications for intergenerational support.

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