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Stuart Davis 현대문법학회 2001 현대문법연구 Vol.24 No.-
Stuart Davis. 2001. The Distribution of Aspirated Stops and /h/ in American English. Studies in Modern Grammar 24, 1-23. Languages that have both aspirated stops and the phoneme /h/ frequently manifest a close parallel in their distribution. Previous work in phonology either has failed to recognize this close parallel or does not formally account for it. For example, virtually none of the work on American English phonology observes the similarity of distribution that exists between /h/ and aspirated stops. In this paper we illustrate the close parallelism and then offer an analysis of it within Optimality Theory. The organization of this paper is as follows. In Section I we present the data that show the parallel distribution between /h/ and aspirated stops in American English. In Section 2 we develop an optimality-theoretic analysis accounting for the distribution of aspirated stops and /h/ in American English in a unified way. In Section 3 we discuss two other possible approaches in accounting for the distribution of /h/ and aspirated stops in American English and note their shortcomings. Finally, in Section 4 we briefly consider the distribution of aspiration and /h/ beyond American English and show the range of distribution patterns that are predicted to occur under the optimality-theoretic approach.
Capturing sustainable fashion purchase behavior of Hispanic consumers in the US
Davis Lizhu,Dabas Chitra 한국마케팅과학회 2021 Journal of Global Fashion Marketing Vol.12 No.3
Despite the vital role Hispanic consumers play in the U.S. apparel market, research on their sustainable apparel consumption behavior is limited. This study investigated the influence of normative expectations on young Hispanic consumers’ organic apparel purchasing behavior. A self-administered online survey was used to collect data from a population of Hispanic college students. The proposed conceptual model was tested using structural equation modeling (SEM). The study results revealed that social norms did not directly influence organic apparel purchase behavior of Hispanic consumers. Instead, social norms determined personal norms and organic apparel knowledge, which then affected the purchase behavior. Perceived health benefits also significantly affected young Hispanic consumers’ purchase behavior of organic apparel. We also found that organic apparel knowledge significantly affected the perceived quality and health benefits of organic apparel. This study contributed to the literature by 1) understanding the complex relationships of social norms with personal norms, organic apparel knowledge, and organic apparel purchase behavior of Hispanic consumers, and 2) incorporating perceived product value into the conceptual model. Findings of this study can help sustainable apparel manufacturers and retailers to develop effective marketing strategies for targeting Hispanic consumers in the US apparel markets.
Photocatalytic hydrogen evolution from biomass conversion
Davis Kayla Alicia,Yoo Sunghoon,Shuler Eric W.,Sherman Benjamin D.,이승현,Leem Gyu 나노기술연구협의회 2021 Nano Convergence Vol.8 No.6
Biomass has incredible potential as an alternative to fossil fuels for energy production that is sustainable for the future of humanity. Hydrogen evolution from photocatalytic biomass conversion not only produces valuable carbon-free energy in the form of molecular hydrogen but also provides an avenue of production for industrially relevant biomass products. This photocatalytic conversion can be realized with efficient, sustainable reaction materials (biomass) and inexhaustible sunlight as the only energy inputs. Reported herein is a general strategy and mechanism for photocatalytic hydrogen evolution from biomass and biomass-derived substrates (including ethanol, glycerol, formic acid, glucose, and polysaccharides). Recent advancements in the synthesis and fundamental physical/mechanistic studies of novel photocatalysts for hydrogen evolution from biomass conversion are summarized. Also summarized are recent advancements in hydrogen evolution efficiency regarding biomass and biomass-derived substrates. Special emphasis is given to methods that utilize unprocessed biomass as a substrate or synthetic photocatalyst material, as the development of such will incur greater benefits towards a sustainable route for the evolution of hydrogen and production of chemical feedstocks.