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Development of Real-Time Scheduling System for OHT Mission Planning (OHT 작업 계획을 위한 실시간 스케줄링 시스템 개발)

  • Lee, Bok-Ju;Park, Hee-Mun;Kwon, Yong-Hwan;Han, Kyung-Ah;Seo, Kyung-Min
    • KIPS Transactions on Computer and Communication Systems
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    • v.10 no.7
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    • pp.205-214
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    • 2021
  • For smart manufacturing, most semiconductor sites utilize automated material handling systems(AMHS). As one of the AMHSs, the OHT control system(OCS) manages overhead hoist transports(OHT) that move along rails installed on the ceiling. This paper proposes a real-time scheduling system to efficiently allocate and control the OHTs in semiconductor logistics processes. The proposed system, as an independent subsystem within the OCS, is interconnected with the main subsystem of the OCS, so that it can be easily modified without the effect of other systems. To develop the system, we first identify the functional requirements of the semiconductor logistics process and classify several types of control scenarios of the OHTs. Next, based on SEMI(Semiconductor Equipment and Materials International) standard, we design sequence diagrams and interface messages between the subsystems. The developed system is interoperated with the OCS main subsystem and the database in real time and performs two major roles: 1) OHT dispatching and 2) pathfinding. Six integrated tests were carried out to verify the functions of the developed system. The system was normally operated on six basic scenarios and two exception scenarios and we proved that it is suitable for the mission planning of the OHTs.

A Study on the Variation of Heroic Narrative Structure of the Film "Asura : The City of Madness" : With Reference to Christopher Vogler's "The Hero's Journey" (영화 <아수라>의 영웅 서사 변주 연구 : 크리스토퍼 보글러의 '영웅의 여행' 기준으로)

  • Oh, Eun-Young
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.3
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    • pp.181-190
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    • 2020
  • Asura: The City of Madness, which was released in 2017, attracted great attention even prior to its release with the combination of Director Kim Sung-su, and actors, Jung Woo-sung, Hwang Jung-min, Ju Ji-hoon and Kwak Do-won. Faithful to its genre as a crime film of film noir, Asura: The City of Madness created multi-layered issues by the overthrow of the archetypal hero character and variation of the heroic narrative structure drew diverse interpretations among both critics and viewers alike. This study aims at analyzing the heroic narrative structure of Asura: The City of Madness based on Christopher Vogler's "The Hero's Journey" and examining how the universality and typicality of narrative structures as mentioned by Vogler are applied to this film. Although the universal and typical characteristics of all narrative structures cannot be analyzed through Christopher Vogler's The Hero's Journey, five atypical characteristics could be derived from this film that deviate from the universality mentioned by Christopher Vogler by looking at the characteristics of the heroic narrative structure implemented as Han Do-kyung, the leading character and a "hero," proceeds through the 12 stages. This study examines which variations such atypical characteristics brought to the heroic narrative structures in crime films what has changed in audiences' expectations, and how it could work as an alternate narrative.

Effect of Risk Perception of Horticultural Facility Farmers on the Purchase Intention Insurance -Focusing on Jeju island - (원예시설 농가의 위험지각이 보험 구매의도에 미치는 영향 - 제주도를 중심으로 -)

  • Lee, Ho-Seung;Kang, Seung-Eun
    • The Journal of the Korea Contents Association
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    • v.21 no.11
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    • pp.490-502
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    • 2021
  • Horticultural facility farmers subscribe to crop accident insurance and insurance products secured by horticultural facilities in preparation for possible risks in the facility. Insurance is purchased to prepare for natural disasters such as typhoons, hail, frostbite, heavy rain, and strong wind damage covered by the product. In order to find out the effect of risk perception, which is a subjective perception of the risks of a given situation, on horticultural facility farmers' intention to purchase horticultural facility insurance products, the risk perception and insurance purchase intention were analyzed. A t-test was conducted to determine the impact relationship between farm size, insurance coverage, and risk perception, and multiple regression analysis was conducted to verify the effect of personal characteristics and behavioral factors such as subjective perception, reference group, media exposure, and compensation understanding. In addition, a three-step regression analysis by Baron & Kenny was conducted to confirm the mediating role of personal characteristics and behavioral factors in the relationship between risk perception and insurance purchase intention. As a result of the study, although there was no difference in farm size, it was analyzed that policy holders had a higher degree of risk perception than non-subscribers, and that compensation understanding had the greatest influence and subjective knowledge had the smallest influence. In addition, these four factors were verified to have a mediating effect on the relationship between risk perception and insurance purchase intention. These results are expected to provide practical help to the development and marketing activities of horticultural facility insurance products.

Useful components of Tuber melanosporum, Tuber aestivum, and Tuber magnatum used as truffles (트러플로 쓰이는 Tuber melanosporum, Tuber aestivum 및 Tuber magnatum의 유용성분)

  • Hee-Gyeong, Jeong;Seung-Bin, Im;Kyung-Je, Kim;Seong-Woo, Jin;Young-Woo, Koh;Neul-I, Ha;Kyeong-Won, Yun;Kyoung-Sun, Seo
    • Journal of Mushroom
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    • v.20 no.4
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    • pp.227-234
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    • 2022
  • This study analyzed Tuber melanosporum, Tuber aestivum,and Tuber magnatum, specifically the content of 𝛽-glucan, amino acids, nucleic acid-related substances, vitamin C, and ergosterol. The 𝛽-glucan content was highest in T. magnatum (20.54%). The free amino acid content was highest in T. aestivum, with the major amino acids being cystine, glutamic acid, and aspartic acid. The total amino acid content was the highest in T. magnatum, the primary amino acids being cystine, glutamic acid, and lysine. The content of nucleotide related compounds was the highest in T. magnatum (5.09 mg/100 g). The highest content of vitamin C (10.15 mg/100 g) and ergosterol (596.91 mg/100 g) was found in T. magnatum, which had the highest useful component content among the three truffles. Additional studies investigating the variation in useful components according to collection time and growth environment are needed.

Mediating Effect of Meaning of Life Moderated by Trauma Intensity on Deliberate Rumination of the Traumatic Experience and Post-traumatic Growth (외상에 대한 의도적 반추와 외상 후 성장의 관계에서 외상 강도에 의해 조절된 삶의 의미의 매개효과)

  • Ryu, Ji-Hyun;Suh, Kyung-Hyun
    • The Journal of the Korea Contents Association
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    • v.22 no.1
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    • pp.535-544
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    • 2022
  • This study identified the relationship between deliberate rumination of adults who experienced traumas and post-traumatic growth, and examined the mediating model of meaning of life moderated by trauma intensity on deliberate rumination and post-traumatic growth. Participants were 318 male and female adults who experienced traumas. The moderated mediating effect was analysed with PROCESS Macro 3.5 Model 7. Results revealed that deliberate rumination of adults who experienced traumas was positively correlated with trauma intensity, meaning of life, and post-traumatic growth, while meaning of life was positively correlated with post-traumatic growth. In a moderated mediating model for post-traumatic growth, there was significant interaction effect of deliberate rumination and trauma intensity; conditionally indirect effect of deliberate rumination was only significant for whose trauma intensity were high. These findings suggest that adults who did deliberate rumination are more likely to experience post-traumatic growth with finding meaning of life. And, the moderating effect suggests that this influence is only with higher levels of trauma intensity. In conclusion, deliberate rumination of severe traumatic event may lead to post-traumatic growth, and it can be helpful to experience the meaning of life in the process.

A Study on the Development items of Korean Marine GIS Software Based on S-100 Universal Hydrographic Standard (S-100 표준 기반 해양 GIS 소프트웨어 국산화 개발 방향에 관한 연구)

  • LEE, Sang-Min;CHOI, Tae-Seok;KIM, Jae-Myung;CHOI, Yun-Soo
    • Journal of the Korean Association of Geographic Information Studies
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    • v.25 no.3
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    • pp.17-28
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    • 2022
  • This study is to develop the direction of the development of the next-generation mapping of marine information required to develop a base of the utilization localization of maritime production tools. The GIS data-processing products and technologies currently used in the Korea's marine sector depend on external applications which is renewal costs, technical updates, and unreflected characteristics. Meanwhile, the S-100 standard, the next generation hydrographic data model that complements S-57's problems in marine GIS data processing, was adopted as a new marine data standard. This study aims to present the current status and problems of marine GIS technology in Korea and to suggest the development direction of GIS software based on the next generation hydrogrphic data model S-100 standard of IHO(International Hydrographic Organization). S-100-based marine GIS localization technology development and industrial ecosystem development research is expected to scientific decision-making on policy issues that occur with other countries such as marine territory management and development and use of marine resources.

A Study on the Fatigue Strength of the 3-D Reinforced Composite Joints (3-차원 보강 복합재 체결부의 피로강도 특성 연구)

  • Kim, Ji-Wan;An, Woo-Jin;Seo, Kyeong-Ho;Choi, Jin-Ho
    • Composites Research
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    • v.35 no.5
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    • pp.322-327
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    • 2022
  • Composite lap joints have been extensively used due to their excellent properties and the demand for light structures. However, due to the weak mechanical properties in the thickness direction, the lap joint is easily fractured. various reinforcement methods that delay fracture by dispersing stress concentration have been applied to overcome this problem, such as z-pinning and conventional stitching. The Z-pinning is reinforcement method by inserting metal or carbon pin in the thickness direction of prepreg, and the conventional stitching process is a method of reinforcing the mechanical properties in the thickness direction by intersecting the upper and lower fibers on the preform. I-fiber stitching method is a promising technology that combines the advantages of both z-pinning and the conventional stitching. In this paper, the static and fatigue strengths of the single-lap joints reinforced by the I-fiber stitching process were evaluated. The single-lap joints were fabricated by a co-curing method using an autoclave vacuum bag process and I-fiber reinforcing effects were evaluated according to adherend thickness and stitching angle. From the experiments, the thinner the composite joint specimen, the higher the I-fiber reinforcement effect, and Ifiber stitched single lap joints showed a 52% improvement in failure strength and 118% improvement in fatigue strength.

A study on the structural relationship between image, attachment, long-term orientation and behavioral intention as a tourism product of local traditional food (지역전통음식의 관광상품으로서 이미지, 애착이 장기지향성 및 행동의도간 구조적 관계)

  • Seo, Gyeong-Do;Lee, Jung-Eun
    • Journal of Digital Convergence
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    • v.19 no.11
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    • pp.75-83
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    • 2021
  • This study presented the analysis results and implications by identifying the structural relationship between the image of food tourism products, the long-term orientation of attachment, and the behavioral intention. The convenience sampling method of the non-probability sampling method was used, and the survey was conducted non-face-to-face due to COVID-19. This study was conducted for customers who live in Jeollabuk-do and Jeollanam-do and have experienced local traditional food. As for the survey method, the main researcher's acquaintances and related experts were consulted and utilized to select the survey subjects, and the survey was conducted by sending/returning them by mail or e-mail. Statistical processing was analyzed using SPSS 25.0 and AMOS 25.0 statistical packages. As a result of the verification, the relationship between the image and attachment of food tourism, the relationship between the long-term orientation in the attachment of traditional food, and the behavioral intention in the attachment of traditional food are significant. A significant positive (+) relationship was formed in the relationship of hypothesis setting according to the research purpose of the relationship.

A study on the structural relationship between resource attraction, entertainment experience, love mark and attachment in tourist destination (관광목적지의 자원매력, 오락적 체험, 러브마크, 애착 간의 구조적 관계)

  • Seo, Gyeong-Do;Lee, Jung-Eun
    • Journal of Digital Convergence
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    • v.20 no.5
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    • pp.261-268
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    • 2022
  • This study tried to understand the meaning of resource attraction, entertainment experience, love mark, and attachment of tourist destinations. A theoretical study was conducted on each research concept to achieve the proposed research purpose. Based on this, an empirical study was conducted after deriving a questionnaire based on this, and a non-face-to-face survey was conducted nationwide using population-proportional sampling. The empirical study was confirmed through the statistical programs SPSS25.0 and AMOS25.0. The resource attractiveness of the tourist destination had a positive (+) relationship with the influence on the tourists' experience. The relationship between the experience and the love mark had a positive (+) relationship. A positive (+) relationship was also formed in the relationship between experience and attachment. However, the relationship between love mark and attachment did not form a significant relationship.Because it reflects regional characteristics, it is a useful material for local culture and history, so protection, preservation, and active program development are required. is needed.

A Systematic Review of Mobile Health Applications Using Self-Acupressure (자가혈위지압을 활용한 모바일 의료 어플에 대한 체계적 문헌고찰)

  • Seokyung Park;Johyun Lee;Ga-Young Jung;Celine Jang;Sang-Ho Kim
    • Korean Journal of Acupuncture
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    • v.40 no.1
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    • pp.1-12
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    • 2023
  • Objectives : This study aims to provide information regarding the status and quality of mobile applications (MAs) using self-acupressure by performing a systematic review. Methods : We conducted comprehensive searching on five international databases and two app markets from inception to July 31, 2022 to identify MAs using self-acupressure. We analyzed the characteristics of each MA regarding the name of the MA, registered app markets, target symptoms, developers, the year and country of development, cost, target age, media function, and expertise. We assessed the quality of each MA using Mobile Application Rating Scale (MARS). Results : We identified a total of 30 MAs using self-acupressure (25 MAs from the app market and 6 MAs from clinical studies, with 1 MA in common). 17 out of 24 MAs from the app market provided self-acupressure regimens for various symptoms and the others provided regimens for specific symptoms such as memory, anxiety, depression, asthma, allergy, low back pain, and headache. 14 developers were reported. 23 MAs were developed after 2013. The largest number of MAs were developed in the United States. The target age group of 12 MAs was above the age of 3, and that of 11 MAs was above the age of 12. 14 MAs provided multimedia functions such as videos. 13 MAs provided information of expertise. From clinical studies, only 3 out of 6 MAs were accessible through the app market. 4 MAs were developed by the researchers of the study. In terms of MARS, the score of MAs from the app market was higher than that of MAs from clinical studies in both objective and subjective evaluation areas. Conclusions : This study summarizes the characteristics of MAs using self-acupressure. More MAs using self-acupressure should be developed and further clinical research for MA on each symptom and disease is warranted for the diversification of MA fields using self-acupressure.