• Title/Summary/Keyword: 사이중심도

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Effects of Stray Light in Blue-light Blocking Lens on the Quality of Image (청색광 차단렌즈에서 미광이 상의 질에 미치는 영향)

  • Yuk, Ju Sung;Yang, Seok-Jun;Kim, Yong Gwon;Choi, Eun Jung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.5
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    • pp.612-618
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    • 2016
  • The aim of this study is to investigate the effects of stray light originating from the blue-light blocking lens on the quality of the image. After designing the ideal spectacle lens, anti-reflection spectacle lens without internal reflection, anti-reflection spectacle lens with internal reflection, and blue-light blocking lens with internal reflection, the light intensity distribution and stray light distribution were derived. The designed spectacle lenses are meniscus lenses with a refractive power of 0.00 D, refractive index of 1.56, and a radius of 155.15 mm. The peaks of reflectance of the 4 types of blue-light blocking lenses are in the range between 430 nm and 440 nm, and their reflectances are 5%, 10%, 15%, and 20%, respectively. According to the analysis results, as the reflectance of the blue-light blocking lens increases, the light intensity in the center of the lens decreases and the intensity of the stray light in the center-periphery and periphery of the lens increases. This trend appeared to intensify with increasing reflectance of the blue-light blocking lenses. Because the increase in the reflectance of the blue-light blocking lens degrades the quality of the image by increasing the intensity of the stray light in the center-periphery and periphery of the lens, its reflectance needs to be adjusted by varying the blue-light blocking ratio and the luminous transmittance, in order to diminish the level of visual discomfort.

Variation in Depth Dose Data between Open and Wedge Fields for 6 MV X-Rays (6MV X선에 있어서 쇄기형 조사야와 개방 조사야 사이의 깊이 선량률의 차이)

  • U, Hong;Ryu, Sam-Uel;Park, In-Kyu
    • Radiation Oncology Journal
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    • v.7 no.2
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    • pp.279-285
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    • 1989
  • Central axis depth dose data for 6 MV X-rays, including tissue maximum ratios, were measured for wedge fields according to Tatcher's equation. In wedge fields, the differences in magnitude which increased with depth, field size, and wedge thickness increased when compared with the corresponding open field data. However, phantom scatter correction factors for wedge fields differed less than $1\%$ from the corresponding open field factors. The differences in central axis percent depth dose between two types of fields indicated beam hardening by the wedge filter The deviation of percent depth doses and scatter correction factors between the effective wedge field and the nominal wedge field at same angle was negligible. The differences were less than $3.20\%$ between the nominal or effective wedge fields and the open fields for percent depth doses to the depth 7cm in $6cm{\times}6cm$ field. For larger $(10cm{\times}10cm)$ field size, however, the deviation of percnet depth doses between the nominal or effective wedge fields and the open fields were greater-dosimetric errors were $3.56\%$ at depth 7cm and nearly $5.30\%$ at 12cm. We suggest that the percent depth doses of individual wedge and wedge transmission factors should be considered for the dose calculation or monitor setting in the treatment of deep seated tumor.

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A study on the communication between the medical staff of Chosun and Japan to conversation by writing (필담(筆談)을 통한 조일(朝日) 의원(醫員) 간 소통의 방식 - 1763년 계미사행(癸未使行)의 필담을 중심으로 -)

  • Kim, hyung-tae
    • (The)Study of the Eastern Classic
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    • no.41
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    • pp.187-209
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    • 2010
  • This thesis to be studied conversation by writing between the medical staff of Chosun(朝鮮) and Japan in 1763. Both countries the medical staff and intellectuals meet that communication, confrontation and conflict, exchanges and cooperation in 18C. They met greeting and sing in chorus. Chosun keep checking in western medicine of Japan. They are compared to customs of two countries. Also Japanese increase interest in the Hangeul(한글). Confrontation and conflict resulted from history recognition and difference of viewpoint of two countries. Especially Kokugaku(古學) have many influence on this situation. So battle come and go to study of Ogyu Sorai(荻生?徠) and Dajai Jun(太宰純). But this situation includes Mutual misunderstanding. Because of limitation on conversation by writing. Exchanges and cooperation take shape on the medical staff that a process of ginseng(人蔘), medical treatment. And two countries promote goodwill that method of buying books in Japan and medical treatment. In conclusion, intellectuals of Chosun and Japan have some misunderstanding and distrust. but they are communication with Chinese writing that east asian's common language. Also exchange its views and information.

Retheorising Civil Society in State-Civil Society Partnership in Welfare : A Critical Review of the Partnership Literature (국가-시민사회 복지파트너십에서 시민사회단체의 역할 : 세 가지 이론적 관점을 중심으로)

  • Kim, Suyoung
    • Korean Journal of Social Welfare Studies
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    • v.44 no.1
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    • pp.267-302
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    • 2013
  • In recent years, partnership has become a central strategy for welfare provision worldwide. Particularly, civil society organisations have obtained considerable attention as the most accountable and democratic partner for public welfare delivery. Yet the mainstreaming of civil society into welfare policies challenges the conventional nature of civil society as an independent sector, and brings into critical question, how the political position of the civil society sector could be redefined in the new era of multi-sectoral partnership. The purpose of this study is to explore the current debates of state-civil society partnership and to propose three theoretical viewpoints (i.e. the mainstream, critical and alternative perspectives) regarding the role of the civil society sector in partnership. In doing so, this article introduces the key literature and scholars in partnership debates and provides analytical frameworks that researchers can use in examining state-civil society partnership cases.

Marine Environmental Characteristics around the Test Phase of Offshore Wind Farm in the Southwestern Coast of Yellow Sea (서남해 해상풍력 실증단지 해역의 해양 환경 특성)

  • Seo, Jinsung;Maeng, Junho;Lim, Eunpyo;Jin, Seungjoo;Kim, Hyunmin;Kim, Taeyun
    • Journal of Environmental Impact Assessment
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    • v.28 no.5
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    • pp.457-470
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    • 2019
  • This study aims to present the characteristics of marine physics, water quality, and sediment quality around offshore wind farm near the Gochang and Buan sea areas through the analysis of monitoring data. The relationships between suspended solid and wave height as well as suspended solid and flow velocity were analyzed. We found that Correlation Coefficient values of 0.61~0.69 between wave height and suspended solid, and suspended solid concentration reaches 75 mg/L or higher when wave height of more than 1m occurred in the spring (1 month). The water quality index (WQI) was used to identify the status of the water quality in the study area. Most of the measured points were rated first grade (very good). The variation of chlorophyll-a was relatively hight compared to the other criteria, indicating that it is a major factor affecting the quality index. In the sediment column, all heavy metals were detected below the Threshold Effects Level(TEL), and ignition loss and grain size show a positive correlation.

A study on the name of the walls in YeonggeonUigwe Based on the gap wall of the Main Hall and Yeongnyeongjeon Hall of Jongmyo Shrine in the Joseon Dynasty (영건의궤로 살펴본 벽(壁)의 명칭에 관한 고찰 - 종묘 정전·영녕전의 갑벽(甲壁)을 중심으로 -)

  • HONG, Eunki;KWAK, Leera;HAN, Wook
    • Korean Journal of Heritage: History & Science
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    • v.54 no.4
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    • pp.4-21
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    • 2021
  • The purpose of this study is to examine the names and types of walls constructed in the late Joseon Dynasty in YeonggeonUigwe, a record of construction works of the Joseon Dynasty, and to examine the current status and name of walls constructed in the main hall and the Yeongnyeongjeon Hall of Jongmyo Shrine. The results of the study are as follows. First, the name of the wall can be divided into four types depending on the characteristics, including direction, location, shape, function, material, and complexity, and was used as a compound word in front of the wall. Second, some of the wall types related to the material were found to have differences in the timing of theypes of walls. Since the 18th century, the use of earthen walls has been reduced, and the use of wooden walls and paper walls are often used. Third, the walls of the Jongmyo Shrine were composed of a mud wall and a fireproof wall. A fireproof wall was installed in the main hall, including a pillar, while the Yeongnyeongjeon Hall was installed only between the pillar and the pillar. Fourth, the Gap Wall can be defined as the "wall constructed at the upper part of the chamber used in the construction of the building in Jongmyo." This study is meaningful in that it attempted to clarify the definition of a wall in the late Joseon Dynasty by examining the names and examples of walls used in the late Joseon Dynasty, focusing on walls that lacked research in familiarity.

Ngugi wa Thiong'o's Cultural Theory and Its Significance in Translation (응구기 와 시옹오의 문화이론과 번역의 의미)

  • Lee, Hyoseok
    • Cross-Cultural Studies
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    • v.46
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    • pp.411-434
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    • 2017
  • With emphasis on various local cultures to confront the Western central culture, Ngugi wa Thiong'o proposes them 'to move horizontally' so as not to repeat the oppressive culture of the West. We need not only dialogues between dominant languages and peripheral languages, but also between marginal languages. With respect to this point, Ngugi thinks that translation itself could be very effective. Ngugi wants to stimulate writing and speaking in marginalized languages and promote translation as a means of making these languages visible. He regards translation as a conversational tool among languages and cultures in the multicultural global community. As is already well known, his determination to write his later works only in his native Gikuyu language has a great meaning in his anti-colonial as well as anti-neocolonial movement. Its proof is his recent effort to cooperate with Jalada Africa. Simon Gikandi criticized the English translation of Matigari as a denial of cultural hegemony of Gikuyu language and its subordination to the global cultural market. However, the concept of 'thick translation', helps us move from Gikandi's doubt of the 'epistemology of translation' to a meaningful strategy of postcolonial translation. Facing some of the scholars' doubts related to his over-stressing language problem, Ngugi points out that the world has managed to function well through translation: the possibility of translation between cultures and translation as a mediating tool for communication nationally as well as internationally. Based on this two-sided solution of translation, he believes that we can overcome the opposition between relativity and universality, center and periphery, and the dominant and the subordinate.

Effect of Service Factors in Distance Education on Customer Satisfaction and Customer Loyalty Impacts: Focusing on Employment Opportunities (원격교육 서비스요인이 고객만족과 고객충성도에 미치는 영향: 취업 준비생을 중심으로)

  • Park, Kwang Rok;Heo, Chul Moo
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.14 no.4
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    • pp.101-111
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    • 2019
  • In distance learning, quality of service is an important part of improving customer satisfaction and customer loyalty. However, in verifying the effectiveness of remote education service quality, it has been researched based on fragmentary effects on remote education service quality, and the effect study on the specific target is insufficient. In this study, the effects of remote education service factors on customer satisfaction and customer loyalty were analyzed in the previous study and among job seekers. The survey was conducted from March 2019 and 258 samples of job seekers who experienced remote education were used for empirical analysis. As a result of the analysis, typology, problem solving, interaction, information serviceability, and convenience had a positive effect on customer satisfaction, and satisfaction had a significant influence on customer loyalty. In addition, it was analyzed that characterization, problem-solving, interaction, information serviceability, convenience and customer loyalty were affected in the verification of the mediated effects of satisfaction. In response, the implications of this study were derived from practical research on customer satisfaction and loyalty of educational companies related to eduTech, where education and ICT (Information Communication Technology) were integrated during the 4th Industrial Revolution, which suggested that the quality of a company's remote education service affected customer satisfaction and customer loyalty to entrepreneurs and marketers in the education company's start-up and marketing process. Further, further research will be needed in other areas as well as in the areas of employment education to verify the importance of service quality and assess the various effects.

A Study on the Factors Influenced on the Performance of Korean Ventures - Focusing on International Entrepreneurship and Firm's Capabilities - (한국 벤처기업의 경영성과에 미치는 영향요인에 관한 연구 - 국제적 기업가정신과 기업역량을 중심으로 -)

  • Yoon, Ki-Chang
    • International Area Studies Review
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    • v.13 no.2
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    • pp.445-474
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    • 2009
  • This study tries to investigate the factors influenced on the performance by top management team's(TMT's) international entrepreneurship(IE) and firm's capabilities(marketing capability and R&D capability) of Korean Ventures. The research model and hypothesis set that TMT's IE directly affect to the performance directly affects and TMT's IE indirectly affect to the performance through the capabilities(marketing capability and R&D capability) by research prior studies. To verify research model, 115 high-technology based Korean ventures survey to be as samples by structured questionnaires and the data is tested by SEM(structural equation modeling) analysis. The results of analysis are as follow. First, there was no relationship between TMT's IE and performance. Second, the IE positively affected to firm's capabilities(marketing capability and R&D capability). Third, firm's internal capabilities positively affected to performance. These results only few TMT's IE cannot sufficiently affect to performance but IE should be propagated to marketing and R&D departments and then firm's performance can improved. This study respect to provide a meaningful implication to globalization and performance of Korean Ventures.

Planning the Redesign of Inner Harbor by Comparative Analysis and Typological Approach (내항 입지의 비교분석과 유형화를 통한 재개발 방향 모색)

  • Kim, Ju-Il
    • Journal of Navigation and Port Research
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    • v.42 no.6
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    • pp.491-500
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    • 2018
  • Due to changes in the distribution industry, inner harbors have been on a sharp decline in the recent past. However, through the application of the right development plans, such harbors can be revitalized into vibrant urban areas again. The importance of inner harbors has been recognized by the relevant authorities in Korea which are now pushing forward with redevelopment plans for its inner harbors. This study proposes a new approach to redevelopment plans based on the recognition that inner harbors have unique characteristics involving both inland areas and the ocean. In the study, representative inner harbors were selected and analyzed comparatively according to two distinct concepts of location: the Gateway Concept and the Central Place Concept. Based on these concepts, the conditions of the inner harbors were examined. Their location can be typed, and development directions were proposed according to their types and conditions. However, difficult points such as isolation and separation between an urban district and the harbor area, can be obstructions to their potential revival. An inner harbor needs to be considered as an intermediary, connecting place between the ocean and the city, not as another ordinary development area. In addition, a redevelopment plan should be accompanied by a strategic viewpoint to make the most of this feature.