• Title/Summary/Keyword: Self-oriented

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Power Enhancement of ZnO-Based Piezoelectric Nanogenerators Via Native Defects Control

  • Kim, Dohwan;Kim, Sang-Woo
    • Proceedings of the Korean Vacuum Society Conference
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    • 2013.08a
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    • pp.297.2-297.2
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    • 2013
  • Scavenging electricity from wasteful energy resources is currently an important issue and piezoelectric nanogenerators (NGs) based on zinc oxide (ZnO) are promising energy harvesters that can be adapted to various portable, wearable, self-powered electronic devices. Although ZnO has several advantages for NGs, the piezoelectric semiconductor material ZnO generate an intrinsic piezoelectric potential of a few volts as a result of its mechanical deformation. As grown, ZnO is usually n-type, a property that was historically ascribed to native defects. Oxygen vacancies (Vo) that work as donors exist in ZnO thin film and usually screen some parts of the piezoelectric potential. Consequently, the ZnO NGs' piezoelectric power cannot reach to its theoretical value, and thus decreasing the effect from Vo is essential. In the present study, c-axis oriented insulator-like sputtered ZnO thin films were grown in various temperatures to fabricate an optimized nanogenerator (NGs). The purity and crystalinity of ZnO were investigated with photoluminescence (PL). Moreover, by introducing a p-type polymer usually used in organic solar cell, it was discussed how piezoelectric passivation effect works in ZnO thin films having different types of defects. Prepared ZnO thin films have both Zn vacancies (accepter like) and oxygen vacancies (donor like). It generates output voltage 20 time lager than n-type dominant semiconducting ZnO thin film without p-type polymer conjugating. The enhancement is due to the internal accepter like point defects, zinc vacancies (VZn). When the more VZn concentration increases, the more chances to prevent piezoelectric potential screening effects are occurred, consequently, the output voltage is enhanced. Moreover, by passivating remained effective oxygen vacancies by p-type polymers, we demonstrated further power enhancement.

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A Study on grand Preference and the Actual Condition by Wedding Fashion Masterpiece Consumer's Lifestyle Group (라이프스타일 집단별 혼례용 패션명품 소비자의 브랜드 선호도 및 구매행동 연구)

  • Park, Ok-Lyun;Ryu, Mi-Ae
    • Journal of Fashion Business
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    • v.12 no.5
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    • pp.67-76
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    • 2008
  • The study surveyed preference and Actual Condition of wedding fashion masterpiece brand by consumer's lifestyle group. First, it was found that the brand preference by wedding fashion masterpiece consumer was Bulgari in precious metal, Burberry in scarf, Louisvuitton in bag and Chanel in cosmetics. Second, as a study result of purchase status, wedding fashion masterpiece brand consumers, who enjoy shopping about 1 time a month, usually purchased the masterpiece in masterpiece hall of department store. Their total purchase amount for wedding was less than 5 million in most cases. Third, regarding purchase-experience brand by consumer's lifestyle group, in clothes, there was significant difference between 4 groups such as shopping unconcerned type, reasonable economic type, self-focused brand-oriented type and social achievement type. In bag, slight difference appeared in 4 groups. Fourth, as a study result of the brand preference by consumer's lifestyle group, there was somewhat significant difference between precious metal, clothes, scarf, bag and cosmetic variables. Fifth, as a study result of the difference of information source use by consumer's lifestyle group, it was found that social achievement type used most various sources such as commerce, store and personnel information. Sixth, as a study result of shopping trend by consumer's lifestyle group, social achievement group searched for pleasure, unique personality and ostentation. Shopping unconcerned type searched for necessary shopping with comfortable style without sparing time in shopping.

The discourse on how to integrate society and science: the applicability of participatory evaluation (과학기술과 사회 연계에 대한 담론: 사회참여형 과학기술 평가방법의 적용가능성 모색)

  • Kim, Tae Hee
    • Journal of Science and Technology Studies
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    • v.15 no.2
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    • pp.163-189
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    • 2015
  • While Science tries to be far from Society, it actually does yearn for the trust from Society, on the other side. Its efforts getting back the trust has been witnessed with its fast evolution, consistent distrust from Society and Scientists' accountability with investment of public fund. Furthermore, many scholars have argued that there is the need to integrate science and society. In this regards, this paper explores how to integrate both spheres by participatory evaluation. To identify how the participatory evaluation works and should be, three main issues are mentioned. One is about evaluation methods; Objective-oriented and Behaviour aspects. Second is about prerequisite factors; sharing scientific language and changed recognition between civil society and scientists. Third is about challenge to be tackled; epistemological gap among evaluators and complex index. Under these issues, this paper sets out that the participatory evaluation should adopt the appropriate evaluation methodology. Last but not least, self-recognition and motivation by evaluators themselves are important factors, along with societal system which can take participatory evaluation.

The Politics of Home: Leonard and Virginia Woolf's Voyage Out ('집'의 정치학-레너드와 버지니아 울프의 출항)

  • Park, Eun Kyung
    • Journal of English Language & Literature
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    • v.54 no.4
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    • pp.531-560
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    • 2008
  • I hope to demonstrate in this paper the degree to which the works of Leonard and Virginia Woolf, mainly The Wise Virgins, The Village in the Jungle, and The Voyage Out, are contained within the politics of home. In doing so, I aim to challenge some mainstream criticism that affirms their resistance to British imperial desire. Although their statuses as outsiders in the British Empire, being a Jew and being a woman respectively, allowed Leonard and Virginia Woolf to criticize British imperialism and a male-dominated culture as well as racial and cultural hierarchies to a degree, their works inevitably unveil their prioritization of the British white-oriented space. In some ways their authorial positions in relation to their texts uphold the imperial center as an invisible regime of truth in their narratives, supporting the patriarchal and imperial binary oppositional structure and its hierarchical order imposed not only on the British subject but also on the foreign, colonial others. Leonard's and Virginia's inconsistencies and ambiguities betray their racial distantiation and notions of British white superiority, as disclosed in their racially stereotyped descriptions and the absence of real communication between the British characters and the colonial, foreign others. The work of self-repetition, the major mechanism in the politics of home, dies hard in Leonard's and Virginia's 'antiimperial' works. Leonard's and Virginia's struggle to stand against the imperial desire needs a genuine ethical position in order to embrace the Other, which would allow us to explore further and guard against the pitfall of postcolonial criticism's being easily degenerated into a neo-colonial criticism, another politics of home.

Feminist Expression Analysis of Modern Commercial Movies (Focusing on "Micro-habitat(2017)") (현대 상업영화의 페미니즘 표현분석연구 (영화 "소공녀(2017)"을 중심으로))

  • Lee, Tae-Hoon
    • Journal of Digital Convergence
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    • v.17 no.10
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    • pp.439-446
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    • 2019
  • Feminism on the theme of gender equality is emerging as an important issue in the overall Korean culture. Feminism is not only a level of claiming or advocating women's rights, but an essential subject of gaze and thought, not a distorted, artificially portrayed image of women distorted or typified in a story created by men in the past It is a film that explores the problem of the individual's life in society fundamentally. Jun Koeun's movie' 'micro-habitat'(2018) 'expresses a feminist theme that shows a strong self - selection and transcendental thinking in male - oriented stereotypes and inequal social structure. The film, which focuses on the public insight into society and the enhancement of the ideal human being from the viewpoint that the public film should lead the educated enlightenment character that raises the broad insight into the world and lead the mature social culture, I think it will play a big role.

Alternatives for Raising the Korea Post as a Global Logistics Firm through the Case Study of DPWN (DPWN의 사례분석을 통한 우리나라 우정사업본부의 글로벌 물류기업화에 대한 고찰)

  • Kim, Yong-Cheol;Kim, Hyun-Duk;Lee, Kwang-Bae
    • Journal of Korea Port Economic Association
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    • v.25 no.2
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    • pp.301-318
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    • 2009
  • This primary purpose of this study is to suggest alternatives for raising the Korea Post as a global logistics firm using a case study. The following alternatives for raising the Korea Post as a global logistics are suggested. First, as a first stage, in addition to previously established business scope such as saving, mail, insurance, logistics business unit have to be added. Second, as a second stage, warehousing and multimodal transport logistics have to be strengthened through M&A or self-financing and investment. Third, as a third stage, market coverage and service scope is to be expanded to country having larger logistics market size. Finally, as a fourth stage, global-oriented total logistics service is to be provided.

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Convergence Study on Job Value and Lifestyles in Some University Students -Focused on dental hygiene students- (일부 대학생의 직업가치관과 생활양식에 관한 융합연구 -치위생과 학생들을 중심으로-)

  • Shin, Seon-Haeng
    • Journal of Convergence for Information Technology
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    • v.9 no.12
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    • pp.190-197
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    • 2019
  • The purpose of this study was conducted as a basic data for the formation of a correct job value and to investigate the relationship between lifestyles and their job value in the dental hygiene students. A self-reported questionnaire was completed by 237 dental hygiene students in Seoul city from September 1 to 30, 2018. The data were analyzed by t-test, one way ANOVA, Pearson's correlation. regression analysis. There were lifestyles(3.27), job value(3.77) in subject. The faster birth order, the higher tended to have the internal job value(p<.05). The challenge·adventure, family-oriented lifestyles were were higher in female(p<.05). In order for college students' lifestyles to have a positive meaning on job values, it is necessary to apply job values education, career aptitude tests, and application of individual counseling programs.

The Place of Action from David Mamet's Concept for Performer Training

  • Son, Bong-Hee
    • International Journal of Advanced Culture Technology
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    • v.9 no.4
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    • pp.180-187
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    • 2021
  • This thesis explores the place and role of a performer's action from a perspective of a director and playwright David Mamet's concept for performer training. This thesis takes inspiration from the idea of Mamet's simple and practical investigation specifically in text-based approach with a performer's bodily function on stage. For Mamet, the writings and practices of many different body-centered training are not rooted in the principle and nature of acting/performance. Reconsidering complicated approaches particularly psychological-oriented theory, practice, and assumption draw on several practitioners takes us beyond the field of visible and/or outer appearance of a performer which in turn leads the performer's body to be as abstract therefore not to being in the moment on stage. Arming the points, we argue that whatever disciplines and/or methods necessarily need to meet the principles and demands of acting/performance/theatre to connect to the materials, an action/objective given by a specific playwright which the performer must inhabit through his/her body. Out of the context, any 'method' serves no purpose. That is, the mechanics of an action is an extension of addressing what a performer's specific needs which shifts his/her body to respond appropriately to the theatrical demands. Taking this argument further, we claim that the purpose of performer training should not be understood as learning and improving techniques or skills for his/her self-perfection. The research finding shows that this resembles to the phenomenon that the visible very often precedes the invisible where the performer's body lose a clarity with no more chance to happen and/or change the event(s). Rather, it is a process of learning what/how to learn which in turn brings us back to the central question of why we do training for what purpose in this contemporary era. Exploring and answering these questions is not only a way to employ the key materials applicable to the theatrical demands but also to achieve the identify as a professional performer/doer on stage.

Family Nursing Phenomena of High-risk and Frail Older Persons in the Community using the International Classification for Nursing Practice (ICNP (International Classification for Nursing Practice)를 이용한 재가 고위험 허약 및 허약 노인들의 가족간호현상)

  • So, Ae Young;Nam, Eun Woo;Shin, Dong Eun
    • Journal of muscle and joint health
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    • v.28 no.2
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    • pp.152-160
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    • 2021
  • Purpose: This study, using the International Classification for Nursing Practice, aimed to identify the phenomenon of family nursing care, and the factors affecting it, for high-risk and frail older persons who have a significant need for home healthcare services. Methods: This study was conducted using secondary data collected by students who interviewed 93 healthcare subjects in a health center. The data was used to analyze the general characteristics, health-related characteristics, and confirmed problems of family nursing phenomena of the subjects. Independant t-test, Pearson correlation coefficient, and multiple linear regression were used for the data analysis. Results: The mean age of the subjects was 82.4±6.3 years. The most common problem of the family nursing phenomenon were unhealthy lifestyle, disturbance in family communication, and lack of family interaction in the community. People with greater family nursing phenomenon problems reported a higher degree of frailty and depression, lower quality of life and self-rated health. The factors that influence the family nursing phenomenon of frail older persons are the problems of mobility and hearing. Conclusion: Physical and psychological problems associated with aging can cause not only personal, but family functional problems as well. Therefore, a comprehensive family-oriented support program is required.

The Study on the foreign education system and educational facilities - Cases of the Germany, Singapore and the United States - (외국의 교육제도와 교육시설의 특징 - 독일, 싱가포르, 미국의 사례를 중심으로 -)

  • Kim, Sungryong
    • Journal of the Korean Institute of Educational Facilities
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    • v.26 no.3
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    • pp.43-50
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    • 2019
  • Nowadays, the knowledge of modern society through education has become more and more complicated. The education system and the educational philosophy have created various education systems and methods for each country due to the difference of history and culture. In Korea, there are various teaching methods in recent years. However, if the traditional teaching method in Korea is based on educating teachers with a good understanding of the contents taught, some foreign countries such as USA and Germany can express their thoughts of the total population. In this situation, this study researches cases of other countries that have different educational systems from ours. It compares the differences of social background, educational program, and educational space in Germany, Singapore and the United States. As a result of this study, the following contents can be derived. The educational program is based on the social background of each country and plans an educational space suitable for the education program. In Germany, the emphasis is on the students' experience and community consciousness rather than on the amount of knowledge, so a home base space is planned between the classrooms to solve the problem of lack of solidarity and belonging among the students who are lacking in the curriculum. Some practical courses are run in the community. In Singapore, educational programs are elite-oriented compared to the other country, and because of the typical tropical climate, educational facilities are characterized by a lot of common space in semi-exterior space. Many schools in the United States have IMC in the central part of their schools that adopt self-directed learning and discussion.