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Kang, Minji,Kim, Sungwhan,Kim, Heejin,Song, Youngjun,Jung, Dongwook,Kang, Sunah,Seo, Ji-Hun,Nam, Sohee,Lee, Yan American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.8
<P>Quorum sensing (QS) inhibitor-based therapy is an attractive strategy to inhibit bacterial biofilm formation without excessive induction of antibiotic resistance. Thus, we designed Ca<SUP>2+</SUP>-binding poly(lactide-<I>co</I>-glycolide) (PLGA) microparticles that can maintain a sufficient concentration of QS inhibitors around hydroxyapatite (HA) surfaces in order to prevent biofilm formation on HA-based dental or bone tissues or implants and, therefore, subsequent pathogenesis. Poly(butyl methacrylate-<I>co</I>-methacryloyloxyethyl phosphate) (PBMP) contains both Ca<SUP>2+</SUP>-binding phosphomonoester groups and PLGA-interacting butyl groups. The PBMP-coated PLGA (PLGA/PBMP) microparticles exhibited superior adhesion to HA surfaces without altering the sustained release properties of uncoated PLGA microparticles. PLGA/PBMP microparticle-encapsulating furanone C-30, a representative QS inhibitor, effectively inhibited the growth of <I>Streptococcus mutans</I> and its ability to form biofilms on HA surface for prolonged periods of up to 100 h, which was much longer than either furanone C-30 in its free form or when encapsulated in noncoated PLGA microparticles.</P> [FIG OMISSION]</BR>
강선아 ( Kang Sunah ) 한국미학회 2020 美學 Vol.86 No.2
이 논문에서는 회화적 은유 또는 시각적 은유에 대한 이론들이 언어적 은유 이론들과 어떤 특징을 공유하는지를 검토함으로써 표준 은유 이론의 확립 가능성을 모색해본다. 캐롤의 시각적 은유 이론은 인지 언어학적 은유 이론 및 화용론적 은유 이론과 많은 특성을 공유하는 반면, 볼하임의 은유 이론은 시적, 창의적 은유를 설명하는 언어적 은유 이론과 더 유사함을 보인다. 결과적으로 언어적 은유 이론과 시각적 은유 이론을 통합하는 표준 은유 이론이 확립될 수 있더라도 이러한 이론은 하나의 통일된 표준 이론의 형태로 제시될 가능성은 높지 않은 것으로 보인다. 은유 이론은 전달되는 의미의 양태, 즉 시각적인지 언어적인지의 구분보다 관습적 의미를 전달하는지 시적 의미를 전달하는지에 따라 구분됨을 보인다. 나아가 회화적 은유는 회화에 대한 경험을 더욱 풍요롭게 하는 유용성이 있음을 지적한다. This paper investigates whether the concept of “visual metaphor” could be taken as literal or not. For this purpose, this paper makes an analysis of representative theories of visual metaphor which are developed by Carroll, Aldrich and Wollheim in order. They claim that the justification of their theory comes from similarity to theories of verbal metaphor. In order to evaluate their claim, this paper establishes criteria to judge the validity of these theories of visual metaphor. It turns out that each theory fits for criteria of metaphor in different aspects. Carroll’s theory is similar to theories of conventional metaphor, on the other hand, Wolheim’s theory is analogous to theories of poetic metaphor. Pictorial metaphor may contribute to enrich our experiences of paintings.
인공지능 기술에 관한 가트너 하이프사이클의 네트워크 집단구조 특성 및 확산패턴에 관한 연구
신선아(Sunah Shin),강주영(Juyoung Kang) 한국지능정보시스템학회 2022 지능정보연구 Vol.28 No.1
It is important to preempt new technology because the technology competition is getting much tougher. Stakeholders conduct exploration activities continuously for new technology preoccupancy at the right time. Gartners Hype Cycle has significant implications for stakeholders. The Hype Cycle is a expectation graph for new technologies which is combining the technology life cycle (S-curve) with the Hype Level. Stakeholders such as R&D investor, CTO(Chef of Technology Officer) and technical personnel are very interested in Gartners Hype Cycle for new technologies. Because high expectation for new technologies can bring opportunities to maintain investment by securing the legitimacy of R&D investment. However, contrary to the high interest of the industry, the preceding researches faced with limitations aspect of empirical method and source data(news, academic papers, search traffic, patent etc.). In this study, we focused on two research questions. The first research question was Is there a difference in the characteristics of the network structure at each stage of the hype cycle?. To confirm the first research question, the structural characteristics of each stage were confirmed through the component cohesion size. The second research question is ‘Is there a pattern of diffusion at each stage of the hype cycle?’. This research question was to be solved through centralization index and network density. The centralization index is a concept of variance, and a higher centralization index means that a small number of nodes are centered in the network. Concentration of a small number of nodes means a star network structure. In the network structure, the star network structure is a centralized structure and shows better diffusion performance than a decentralized network (circle structure). Because the nodes which are the center of information transfer can judge useful information and deliver it to other nodes the fastest. So we confirmed the out-degree centralization index and in-degree centralization index for each stage. For this purpose, we confirmed the structural features of the community and the expectation diffusion patterns using Social Network Serice(SNS) data in Gartner Hype Cycle for Artificial Intelligence, 2021. Twitter data for 30 technologies (excluding four technologies) listed in Gartner Hype Cycle for Artificial Intelligence, 2021 were analyzed. Analysis was performed using R program (4.1.1 ver) and Cyram Netminer. From October 31, 2021 to November 9, 2021, 6,766 tweets were searched through the Twitter API, and converting the relationship users tweet(Source) and users retweets (Target). As a result, 4,124 edgelists were analyzed. As a reult of the study, we confirmed the structural features and diffusion patterns through analyze the component cohesion size and degree centralization and density. Through this study, we confirmed that the groups of each stage increased number of components as time passed and the density decreased. Also Innovation Trigger which is a group interested in new technologies as a early adopter in the innovation diffusion theory had high out-degree centralization index and the others had higher in-degree centralization index than out-degree. It can be inferred that Innovation Trigger group has the biggest influence, and the diffusion will gradually slow down from the subsequent groups. In this study, network analysis was conducted using social network service data unlike methods of the precedent researches. This is significant in that it provided an idea to expand the method of analysis when analyzing Gartners hype cycle in the future. In addition, the fact that the innovation diffusion theory was applied to the Gartners hype cycles stage in artificial intelligence can be evaluated positively because the Gartner hype cycle has been repeatedly discussed as a theoretical weakness. Also it is expected that this study will provide a new perspective on d
( Eunhee Cho ),( Sunah Kang ),( Yeonju Hong ) 한국감성과학회 2019 춘계학술대회 Vol.2019 No.-
To research the scent of pine soot ink, volatile compounds of the pine soot inkstick were analyzed. Head-space extraction method was used to capture the volatiles from pine soot inkblock. Those volatiles were separated and identified by GC-MS. Thereafter, the odor characteristic properties of the major volatile components were obtained by Flavor-Base 2010. A total of 59 volatile compounds were identified and the major volatile components were borneol (36.99%), camphor (33.02%), isoborneol (13.58%), hexanal (0.3010%), 1-terpineol+isopulegol (0.2707%) and nonanal (0.2345%). The main components contributed to the odor of pine soot inkstick were terpenes and aldehydes. These sorts of chemicals smell like pine, woody, penetrating, camphoreous and peppery.
Noh, Minwoo,Kang, Sunah,Mok, Yeongbong,Choi, So Jung,Park, Jeongseon,Kingma, Jannick,Seo, Ji-Hun,Lee, Yan The Royal Society of Chemistry 2016 Chemical communications Vol.52 No.3
<P>The upper critical solution temperature (UCST) phase transition of halide salts of branched polyethylenimine (PEI) and methylated branched polyethylenimine (MPEI) is first reported in aqueous solutions. In particular, iodide counter-ions can introduce UCST properties in MPEI. The importance of the counter-ion composition of MPEI for UCST transition is discussed in detail.</P>
기자재 카탈로그 구축을 위한 높은 복잡도를 가지는 기자재 3D CAD 데이터의 간략화 절차
강연욱(Yeonuk Kang),박선아(Sunah Park),문두환(Duhwan Mun),권순조(Soonjo Kwon),리경호(Li jinggao),천상욱(Sanguk Chun),한순흥(Soonhung Han) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
선박 의장과 해양 플랜트의 설계 및 건조 후 유지보수를 위해서 기자재 카탈로그의 구축이 요구된다. 기자재 카탈로그에서는 기자재의 3D CAD 정보뿐만 아니라 포트 정보와 사양 정보가 저장된다. 조선소의 기자재 카탈로그의 구축 현황을 조사한 결과 기자재 카탈로그의 구축에 대한 다양한 요구사항이 존재하며 수작업으로 진행이 되기 때문에 카탈로그 구축에 많은 시간이 소비 되고 있다. 이 논문에서는 기자재 카탈로그의 구축 절차를 분석한 결과에 대해서 설명한다. 그리고 높은 복잡도를 갖는 기자재 업체의 3D CAD 데이터를 간략화하여 선박이나 해양플랜트의 기자재 카탈로그를 구축하는 변환 시스템의 개발 절차에 대해서 논의한다. 마지막으로 3D CAD 데이터의 간략화를 위한 핵심 기능 중 하나인 특징형상 재배열 알고리즘을 구현한 결과에 대해서 설명한다.