短時調의 中國人物素材 受容 硏究

Yu, Changliang 忠南大學校 大學院 2014 국내석사

This thesis researched the types of Chinese-character-topics showed on short Si-jo. On this typical study, the Yu-ga likely characters, the Do-seon likely characters, and the features of characters are covered. There are all thirty-seven Yu-ga likely characters, including 13 scholars, 3 filial sons, and 21 vassals. Among them there are lots of works based on Gong-ja, Maeng-ja, and Ju-hee. Among the Do-seon likely characters, there are nine hiding shcolars, three beatiful women and three characters in drunken delight; fifteen in sum. The most shown characters on the convivial Si-jo are also I-baek and Yu-lyeong. The Do-ga thought effects show: first, they arouse hiding scholar sprit; second, it is considered the life of fun of being drunk; third, sometimes Do-ga thought leads to Sin-seon thought. Lastly, the features of Chinese-character-topics short Si-jo are followed. ①. The names of scholars appear a lot; chronologically they were only Chun-chu era and Song time characters. ②. Besides of scholars, the names of kings and vassals appear a lot. This may be considered Do-tong theory unfolded by Ju-hee. ③. The names of writers also appear a lot, chronologically they were spread out between Han to Song era the time when Do-ga thought were popular. ④. The names of hiding scholars also appeared a lot. Hiding scholars can be divided into pure hiding scholars and impure ones. ⑤. Yu-ga thought in Joseon dynasty was thought that loyalty is more considered than filial duty. On the old Si-jo, the Yu-ga likely characters and Do-ga likely characters appear a lot, especially the Yu-ga likely characters are given weight. This can be explained, in Joseon-jo which took Confucianism, Si-jo works were mostly created.

Study on the catalytic activity of surface-modified anatase TiO₂nanocrystals

위샤오메이 Ajou University 2017 국내박사

Reconstruction of neutrino event in the KNO water cherenkov detector

Yu, Seonghyeon Sungkyunkwan university 2021 국내석사

The KNO (Korean Neutrino Observatory) project has been proposed as a next-generation water Cherenkov neutrino detector because it is expected to make important discoveries such as CP violation, proton decays, and supernova neutrinos for the next several decades. In order to understand the performance of the KNO detector, simulations and event reconstructions are developed. In this thesis, we report the preliminary results on neutrino energy reconstruction and their implication on sensitivities of CP violation measurement at KNO. 시피 깨짐, 양성자 붕괴, 초신성에서 오는 중성미자 관측과 같은 차세대 중요한 중성미자 실험들을 위해, 체렌코프 복사 한국 중성미자 검출기 연구 과제에 대한 논의가 계속되고 있다. 이를 위한 한국 중성미자 검출기의 효과를 이해하기 위해서 시뮬레이션을 이용한 중성미자 사건 재구성 도구가 개발되었다. 또한, 한국 중성미자 검출기의 시피 깨짐에 대한 민감도를 보여주는 예비 결과를 보여준다.

Optimum spray processes for high efficiency polymer solar cells

유병관 Gwangju Institute of Science and Technology 2016 국내박사

Biological control of postharvest green and blue mold rot of citrus fruits by Bacillus amyloliquefaciens BCL251

유상미 충남대학교 대학원 2009 국내석사

A total of 746 isolates of microorganisms were tested in primary screening against Penicillium digitatum and Penicillium italicum. The strain BCL251 was selected as the most effective microorganism and identified as Bacillus amyloliquefaciens based on bio-chemical characteristics using Biolog system, MIDI, API kit and 16S rDNA sequencing. Cells of the B. amyloliquefaciens BCL251 were gram positive, rod shaped, 0.5 - 0.7 x 1.9 - 2.8㎛ in size and often formed in chains. The rods had rounded ends and endospore. The spores were ellipsoidal and located in center of the cells. Bacillus amyloliquefaciens strain BCL251 suppressed the mycelial growth of various fungal phytopathogens such as P. digitatum, P. italicum, Diaporthe citri, Alternaria alternata, Botrytis cinerea, and Fusarium oxysporum. Spore germination and germ tube length of P. digitatum and P. italicum in the presence of BCL 251 were markedly inhibited and those were completely inhibited at conc. of 1×108 CFU/㎖. B. amyloliquefaciens BCL251 highly inhibited development of green and blue mold rot on wounded citrus artificially inoculated at 20℃ and 4℃. At 20℃ and 95% RH, treatment with B. amyloliquefaciens BCL251 decreased incidence of green mold and showed control value of 65% to 80%. The treatment with BCL251 was also effective to control blue molds (control value was 60% to 70% ). At 4℃ and 95% RH, the treatment with BCL251 decreased incidence of green and blue mold and showed control value of 50-80%. The population density of BCL251 up to approximately 108 CFU/㎖ resulted in a decrease in green and blue mold incidence. And preventive treatment with BCL251 decreased incidence of green mold to 60-75%, and blue mold to 35-60%. BCL251 populations were increased on wounded and unwounded fruits at 20 and 4℃, and kept initial populations of strain BCL251 after 21 days of storage. These results showed that Bacillus amyloliquefaciens BCL251 would be a promising bio-control agent to postharvest disease of citrus. Further study for full-scale commercial evaluation is needed to use commercially as a control agent of citrus green and blue mold rot. 감귤의 저장 중 피해를 발생시키는 녹색곰팡이병(Penicillium digitatum)과 청색곰팡이병(Penicillium italicum)의 생물학적 방제제를 선발하기 위하여746종의 미생물을 분리하였다. 가장 높은 항균효과를 나타내는 BCL251균주를 선발하여 Biolog system, MIDI, API kit 그리고 16S rDNA 염기서열분석을 수행한 결과 Bacillus amyloliquefaciens로 동정 되었다 Bacillus amyloliquefaciens BCL251 균주는 그람 양성균으로 폭은 0.5 - 0.7 ㎛, 길이는 1.9 - 2.8㎛ 였다. 간상형으로 체인을 형성하기도 하며, 운동성을 가지고 있었으며, 내생포자는 정중앙에 타원형으로 위치하고 있었다. In vitro 상에서 Alternaria alternata, Botrytis cinerea, Fusarium oxysporum 등의 주요 식물병원균과 감귤 저장시 주요 병원균인 Penicillium digitatum, Penicillium italicum, Diaporthe citri 에 대하여 강한 항균활성을 나타내었고, 병원균 포자 발아와 발아관의 저해 정도를 액체배지 상에서 조사한 결과 108 CFU/㎖의 농도에서 P. digitatum 과 P. italicum 모두 포자 발아와 발아관의 생장을 완전하게 저해하였다. 감귤 표면에 상처를 낸 다음 병원균을 접종하고, BCL251 균주를 접종한 후 20℃에서 7일간 저장한 결과, 녹색 곰팡이병에 대해서는 65~80%, 청색 곰팡이병에 대해서는 60~70%의 방제가를 보였다. 또한 처리 후 4℃ 저온 저장 시에도 30일 후 각각 50~80%의 방제가를 나타내었다. BCL251의 적정 처리 농도를 결정하기 위해 105~109 CFU/㎖로 처리한 결과 녹색 곰팡이병과 청색 곰팡이병 모두에 대하여 BCL251의 농도가 높아질수록 방제가가 높아지는 것을 확인 할 수 있었으며, 예방적 효과를 알아보기 위하여 BCL251 균주를 접종 한 뒤 병원균을 접종한 결과 푸른 곰팡이병은 약 60~75%, 청색 곰팡이병은 35~60% 의 병발생 억제 효과를 나타내었다. 감귤 표면에서 BCL251의 동태변화를 알아보기 위하여 20℃와 4℃에서 상처와 무상처 접종으로 나누어 밀도를 조사한 결과 큰 변화 없이 21일이 지난 후에도 처음의 밀도가 유지 되고 있었다. 이러한 결과들을 종합하여볼 때, Bacillus amyloliquefaciens BCL251 균주는 강한 항균활성 능력을 가지고 있고, 감귤의 녹색 곰팡이병과 청색 곰팡이병을 억제 시키는 능력이 뛰어나며, 내생 포자의 존재로 비교적 안정한 상태를 유지 함에 따라 정착력과 생존력이 우수함을 엿볼 수 있었다. 따라서 이러한 특성을 이용하여 제제화한다면, 안정적인 재현성을 발휘할 수 있을 것으로 보여 감귤의 수확 후 저장병의 방제와 저장기간의 연장에 큰 기여를 할 수 있을 것으로 생각된다.

중국 웹 소설 기반 애니메이션의 제작 현황 고찰

An Yu 세종대학교 대학원 2021 국내석사

중국 애니메이션의 대안을 모색하는 과정에서 웹 소설 IP의 팬덤 기반과 각색은 애니메이션의 중요한 시나리오 원천이 됐다. 웹 소설을 바탕으로 한 애니메이션이 주요 트랜드로 되었다. 웹 소설 원작 애니메이션의 작품이 증가하고 있지만, 그 발전은 아직 시작 단계여서 끊임없는 연구가 필요하다. 웹 소설 각색 애니메이션의 작품은 현재 주로 무협·마법 판타지 장르, 프로게이머 E-스포츠 경연장르, 브로맨스 장르를 위주로 하고 있는데, 그 중에서도 무협·마법 판타지 장르가 다수를 차지하고 있다. 브로맨스 장르의 작품 수는 최근 몇 년 사이에 점차 증가하고 있다. 전반적으로 웹 소설의 애니메이션 원작이 늘고 시청의 폭이 넓어지고 있지만, 각색과 심미적 욕구 충족에 유의할 필요가 있다. 본 논문은 중국 웹 소설 기반 애니메이션의 발전 과정을 고찰하였으며, 이론의 기초 위에서 웹 소설 기반 애니메이션의 장점을 분석하였다. 2015년부터 2020년까지 중국 웹 소설 애니메이션을 대상으로 영웅의 여정 이론과 팬덤 문화 이론을 활용하여 문화적 가치 제고 및 장르별 전략을 제시함으로써 웹 소설 애니메이션의 제작 현황을 연구하고, 여기에 웹 소설을 원작으로 한 애니메이션이 지속적으로 발전할 수 있다는 연구문제를 제시한다. 우선 이론적 배경과 선행 문헌에 대한 고찰을 통해 웹 소설 기반의 애니메이션의 등장과 발전 현황을 설명하고, 현재 웹 소설 기반의 애니메이션의 주요 장르를 분석했다. 마지막으로 웹 소설의 내적 요인과 팬덤의 외적 요소로 웹 소설의 흥행을 분석했다. 최근 몇 년간 고전문학 기반 애니메이션 내용과 웹 소설 기반 애니메이션 내용을 분석해 웹 소설 기반 애니메이션의 특징에 대해 두 가지 측면에서 분석했다. 첫째, 성장형 구조, 수용자 성인화 트랜드, 여성 캐릭터의 중시 경향 등 세 가지 측면에서 웹 소설 애니메이션의 캐릭터 구조를 분석한다. 둘째, 웹 소설 기반 애니메이션 장르의 확대로 볼 때, 시대 변화로 인해 프로게이머 E-스포츠 경연장르의 애니메이션이 긍정 에너지를 갖는 작품이 되었다. 또한 여성 시청자가 늘어나는 가운데, 여성의 시각을 위주로 한 브로맨스 장르로 한 작품들이 등장하기 시작하여 여성 시청자의 심미에 영합하게 되었다. 마지막으로 최근 몇 년간 고전 문학 기반 애니메이션의 내용과 웹 소설 기반 애니메이션의 내용을 고찰하여 현재 주소비자의 시각에서 어떤 내용 장르가 더 유행하는지 분석하고 웹 소설 기반 애니메이션의 주의할 만한 각색을 제안하여 웹 소설 기반의 애니메이션의 미래를 제안한다.

Amorphous Pharmaceutical Solids: Surface Enrichment of Components and Control of Liquid-Crystalline Order

Yu, Junguang The University of Wisconsin - Madison ProQuest Dis 2023 해외박사(DDOD)

This dissertation contributes to two areas of glass science: (1) surface enrichment of components in a multi-component glass and (2) glasses with tunable liquid-crystalline order. Glasses have liquid-like uniformity and compositional flexibility and crystal-like strength, with numerous applications in optics, electronics, food science, and pharmaceutics. Amorphous drugs are more soluble and sometimes more bioavailable than crystalline drugs, providing a general tool for the delivery of poorly soluble drugs. In the first area, we show that the surface composition of an amorphous drug formulation can be vastly different from its bulk composition. A surfactant, a key formulation ingredient, can enrich strongly on the surface up to near purity and the degree of enrichment is controlled by the relative surface activities of the components. A polymer, another key ingredient, can also be surface-enriched with an enrichment rate governed by the rate of polymer diffusion through the bulk. The surface enrichment phenomenon impacts the stability and performance of amorphous formulations. In the second area, we demonstrate that organic glasses can be prepared in which the liquid-crystalline (LC) order can be systematically controlled. For rod-like and discotic mesogens, the LC order in a glass is controlled by the kinetic arrest of a slow relaxation mode (end-over-end rotation for rods, head-to-tail flip for discs). As a result, each glass has not one, but two internal (fictive) temperatures, with the higher value associated with the regularity of molecular packing and the lower value with the spacing between molecules. Our finding helps understand the complex structure of a glass. Together these two contributions expand the tool box of glass engineering for applications in pharmaceutics and organic electronics.

Study on the catalytic activity of surface-modified anatase TiO2 nanocrystal

Yu Xiaomei 아주대학교 2017 국내박사

Anatase TiO2 nanosheets with large {001} facets are synthesized in a hydro thermal process by using HF as a shape-controlling agent. A successive post treatment with either H2 or NH3 gases is carried out under a gas flow at elevated temperatures of 500 – 800 °C. The photocatalytic performance of these prepared TiO2 catalysts is evaluated from a photodegradation of methylene blue in an aqueous solution under light irradiation. A shape effect is observed from the as-synthesized aTiO2 for higher photoactivities with the optimized ratio of crystal facet {001} close to 60%. Further enhancement on photoactivity is also achieved after the chemical etching treatment of the as-synthesized aTiO2 in a dilute NaOH (or HF) solution to remove the surface layers with significant changes in the surface defects as well as the surface morphology. The changes, especially in the surface defects which favor the formation of surface O- species under ambient condition are considered to play an important role in improving the photoactivity. Furthermore, post treatments of aTiO2 with reducing gases such as H2 may change the concentration and distribution of the intrinsic Ti3+ defects, which including the oxygen vacancies and Ti3+ interstitials in between the surface and bulk of nanocrystals. We find that the enhanced photoactivity after hydrogenation is closely related to such changes in defects. Compared with aTiO2, in our case, about 10 times higher photoactivity is obtained with hydrogenated TiO2 (H-TiO2) at 600 °C for 16 h treatment which is suggested due to a high surface-to-bulk defect ratio and a no uniform distribution of defects between the bulk and surface. Here we can see that the surface/bulk defects can be controlled by kinetically controlling of hydrogenation conditions, which in turn, will improve the photocatalytic performance of aTiO2. Other dopant element such as N is also introduced by annealing of aTiO2 under NH3 flow, which is investigated to have a promoting effect on photoactivity especially under visible light (Halogen lamp) irradiation. The optimized doping condition (temperature, time, gas flow rate) with generally enhanced photoactivity observed in our research is considered attributed to the detailed distribution of doped N species within the TiO2 matrix. A N-rich shell is obtained near the surface of N-TiO2 and proved by dramatic decrease in photoactivity after removing of this shell layer through post-chemical-etching in HF aqueous solution. While, the enhancement of photoactivity is favorable with the presence of no uniform distribution of N dopants which may improve the charge separation in TiO2 nanocrystals. The thermal catalytic performance of our as-synthesized aTiO2 nanosheets in CO oxidation reaction is also studied with the TiO2-supported Pt catalysts over a wide range of reaction conditions such as pressures of 1 – 100Torr and temperatures of 300 – 500 K. Well prepared TiO2 nanocrystals with 1 – 3wt% Pt loading are oxidized and reduced at 300 °C before being exposed to the reactants of CO and O2 gases in a well-defined ratio. The reaction rate changes based on the systematic measurements and the temperature-dependent reaction rates are observed to follow Arrhenius behavior. We observe that the initial stage of reaction is strongly influenced by the initial surface condition. Also, two distinct temperature ranges with different kinetics are investigated to show different slopes in Arrhenius plot. The partially oxidized Pt particles are characterized in a form of mixed phase of metallic Pt, PtO and PtO2 which provide various active sites for catalytic CO oxidation. The sudden change in the slope of Arrhenius plots is considered due to the formation of Pt oxides at high temperatures under oxidizing condition which is proposed to switch the reaction channels over new reaction sites at the boundary of Pt oxides. For the conversion of ubiquitous solar energy into clean chemical fuels such as H2, SnS has also been studied as a strong potential candidate as a photocatalyst in applications such as water splitting for its appropriate band gap and high optical coefficient. In our study, a two-dimensional orthorhombic SnS thin films in shape of nanodisk are prepared by dissociation of SnS2 particles in Ar plasma followed by sulfur reduction. The thickness of the SnS films varies from 10 – 200 nm in a controllable way and a thickness-dependent effect is observed on its physical properties such as the optical band gap, the absorption coefficient and the flat band potential. A photoelectrocataltytic water splitting is carried out in a three-electrode system with SnS as the working electrode, Pt as the counter and Ag/AgCl as the reference electrode. The hydrogen evolution rate is determined from the gas chromatography (GC) measurements. We find that with positive bias voltage of ESnS/(Ag/AgCl)=0.4 V, enhanced H2 evolution occurs over Pt while O2 production is suppressed over SnS surface under UV irradiation. However, the opposite bias voltage of -0.56 V leads to about 4 times higher of H2 evolution rate which obtained from the SnS surface, the current flow is suppressed. We propose band alignment models for our water splitting system for the explanation of the underlying mechanism.

A Newly Commissioned Work for Cello, A Recording and Performance Practice Guide

Tseng, Yu-Ting Arizona State University 2016 해외박사(DDOD)

The introduction of a new instrumental piece---specifically Taiwanese---into the cello repertoire is as exciting as it is important. Currently, the majority of works for cello and piano include predominantly Western compositions that is repeatedly taught and performed. Reflections, by Taiwanese composer Ming-Hsiu Yen (Ms. Yen) is a response to this saturation. It is a piece that is both demanding for the performers and entertaining for the audience. Brilliantly written by a composer who has intimate familiarity with both the cello and piano, it is highly suitable for scholarly study and performance. This document details ensemble issues, interpretative suggestions for both cellist and pianist, and general concepts about the music. The composer further adds to these concepts and suggestions. Reflections is a programmatic work comprised of four movements, each with a descriptive title: "Gear," "Tears of the Angel," "Spintop," and "Transformation." Because the composer's intentions were driven by pictorial ideas and not by a formal harmonic structure, this paper concentrates on ensemble issues and interpretation less than harmonic analysis. Secondly, the project includes the premiere recording of Reflections, as performer by Yu-Ting Tseng, cellist, and Dr. Jeremy Peterman, pianist. This audio documentation provides other cellists and pianists the opportunity of hearing the piece as originally conceived by the composer, as an aid to their own future preparation of this work. This recording, combined with the interpretative analysis, will assist in bringing Reflections into the cello repertoire and public eye.

Essays on behavioral finance

Yuan, Yu University of Pennsylvania 2008 해외박사(DDOD)

The thesis consists of two essays on behavioral finance. The first essay is titled, "Attention and Trading." This study empirically explores the effects of attention levels on investors' trading behavior and on market price dynamics. Specifically, we analyze the ability of market-wide attention-grabbing events---record-breaking events of the Dow index and front page articles about the stock market---to, predict the trading behavior of investors and market returns. The empirical results show that the impact of attention is pervasive across the market. High attention causes individual investors to reduce their stock holdings dramatically when the market level is high and to increase their stock holdings modestly when the market level is low. The aggressive selling by individual investors induces institutional investors to trade and has a negative impact on market prices, reducing market returns by 19 basis points on days following attention-grabbing events. The second essay is titled, "Investor Sentiment and the Mean-Variance Relation," with Jianfeng Yu. This study documents the influence of investor sentiment on the market's mean-variance tradeoff. We find that the stock market's expected excess return is positively related to the market's conditional variance in low-sentiment periods but unrelated to variance in high-sentiment periods. These findings are consistent with the presence of sentiment traders who, during high sentiment periods, undermine an otherwise positive mean-variance tradeoff. We also find that the negative correlation between returns and contemporaneous volatility innovations is much stronger in the low-sentiment periods. The latter result is consistent with the stronger positive ex ante relation in such periods.