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Proposed parameters of optimal central incisor positioning in orthodontic treatment planning: A systematic review

  • Sangalli, Linda;Dalessandri, Domenico;Bonetti, Stefano;Mandelli, Gualtiero;Visconti, Luca;Savoldi, Fabio
    • The korean journal of orthodontics
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    • v.52 no.1
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    • pp.53-65
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    • 2022
  • Objective: Planning of incisal position is crucial for optimal orthodontic treatment outcomes due to its consequences on facial esthetics and occlusion. A systematic summary of the proposed parameters is presented. Methods: Studies on Google Scholar©, PubMed©, and Cochrane Library, providing quantitative information on optimal central incisor position were included. Results: Upper incisors supero-inferior position (4-5 mm to upper lip, 67-73 mm to axial plane through pupils), antero-posterior position (3-4 mm to Nasion-A, 3-6 mm to A-Pogonion, 9-12 mm to true vertical line, 5 mm to A-projection, 9-10 mm to coronal plane through pupils), bucco-lingual angulation (4-7° to occlusal plane perpendicular on models, 20-22° to Nasion-A, 57-58° to upper occlusal plane, 16-20° to coronal plane through pupils, 108-110° to anterior-posterior nasal spine), mesio-distal angulation (5° to occlusal plane perpendicular on models). Lower incisors supero-inferior position (41-48 mm to soft-tissue mandibular plane), antero-posterior position (3-4 mm to Nasion-B, 1-3 mm to A-Pogonion, 12-15 mm to true vertical line, 6-8 mm to coronal plane through pupils), bucco-lingual angulation (1-4° to occlusal plane perpendicular on models, 87-94° to mandibular plane, 68° to Frankfurt plane, 22-25° to Nasion-B, 105° to occlusal plane, 64° to lower occlusal plane, 21° to A-Pogonion), mesio-distal angulation (2° to occlusal plane perpendicular on models). Conclusions: Although these findings can provide clinical guideline, they derive from heterogeneous studies in terms of subject characteristics and reference methods. Therefore, the optimal incisal position remains debatable.

A Preliminary Study on the Development of the COVID-19 Documentation Strategy for University Archives (대학기록관의 코로나19 도큐멘테이션 전략 개발을 위한 예비연구)

  • Kim, Gaeun;Lee, Jongwook
    • Journal of Korean Society of Archives and Records Management
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    • v.22 no.1
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    • pp.159-176
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    • 2022
  • This study aims to develop a COVID-19 documentation strategy for university archives, which will act as a response system to infectious diseases. The study applied the phases of "documentation area definition and preliminary analysis" and "documentation strategy drafting" described in Heckman's documentation strategy model. In defining the documentation area and doing preliminary analysis, the author analyzed the cases of COVID-19 documentation projects at overseas university archives and conducted interviews with stakeholders. In drafting the documentation strategy, the author interviewed three archivists working in university archives. From these findings, the documentation strategy plan was developed and revised based on the feedback from archivists. The strategy plan covers the documentation purpose, subject/functional area, group, reference information, and major considerations. The findings of this study might be useful for figuring out ways to secure records related to COVID-19 or other infectious diseases in university archives.

The Effect of Novel Engineering (NE) Education using VR authoring tool on STEAM literacy and Learning Immersion (VR 저작도구 기반 노벨 엔지니어링(NE) 교육이 초등학생의 융합인재소양과 학습몰입에 미치는 효과)

  • Song, Hae-nam;Kim, Tae-ryeong
    • Journal of The Korean Association of Information Education
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    • v.26 no.3
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    • pp.153-165
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    • 2022
  • This study is about the Novel Engineering(NE) education program : a class model that combines reading and engineering. By including the process of directly designing and programming a virtual reality using CospacesEdu (a VR authoring tool for the NE class), the effects of the educational program on learners' STEAM literacy and Learning immersion are demonstrated. Moreover, the subject of this education is Dokdo in South Korea. As a result, the average of STEAM literacy is increased, and a significant change is confirmed statistically in Convergence. Learning immersion shows significant improvement in Challenges-skills balance. On the other hand, some students experience difficulties due to the long research stages, from reading a book to researching for information to designing VR and rewriting a story with the collected information. In conclusion, this study will help generalise other education using NE, and this developed program will be a reference that would suggest a new way of teaching.

Survey of the Archives of NDRM, Memory of the World and a Proposal of their Rules for Archival Description (세계기록유산 국채보상운동기록물의 수집현황과 기술규칙 제안)

  • kim, kyung-nam
    • The Korean Journal of Archival Studies
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    • no.71
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    • pp.91-130
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    • 2022
  • This article aims to (1) come up with a new way of the classification by analysing 2,475 of the documents in the Archives of the National Debt Redemption Movement(NDRM) recently registered as the Memory of the World; (2) make a proposal of their rules for archival description with reference to ISAD(G) 2ND EDITION, ISSAR, and NAK. This leads to the suggestion of necessity to make archivistically the rules for archival description of archives in the Memory of the World and manage them on the rules, in view of the recent trend of increasing the number of the records registered as the Memory of the World and adding the records even after their registration. The archives of NDRM is an artificial collection. It can be said that the classification of manuscript collection on the basis of the preparation subject according to Schellenberg's principle of the provenance is the most systematic. On the foundation of it, the suggestions of various classifications by activities, times, sorts of records, medias, topics, etc. would permit to search and interpret the archives in the Memory of the World with more efficiency.

A Study on the Academic Value and Development Strategy of Journal of Korea Port Economic Association (한국항만경제학회지의 학술적 가치와 발전전략)

  • Seo, Mun-Sung;Kim, Seung-Chul;Ahn, Tae-Kun;Kim, Dong-Yoon
    • Journal of Korea Port Economic Association
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    • v.37 no.1
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    • pp.87-101
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    • 2021
  • The Korea Port Economics Association was established in 1985 and has been operated for academic research on port economics and research on port logistics. Marking the 35th anniversary of its establishment, it is necessary to establish a new development strategy for academic societies and academic journals. This study analyzed the current status of publication of the Journal of Korea Port Economic Association, from the first issue of 2017 to the December issue of 2019, the utilization and systematic nature of this journal, and the efforts implemented to improve the quality of the journal. The recognition, utilization, and subject inconsistencies were analyzed to determine the academic value of the journal. The findings suggested the journal's academic excellence, as evidenced by its highest ranking by Journal Impact Factor among agro-oceanography journals (among 77 journals) and marine transport journals (among four journals). Further, the direction of development for this academic journal was presented with reference to research characteristics and specialization efforts.

Going Abroad for Urban Management Projects: A Case Study of Kuwait New Town (도시관리사업의 해외 진출방안 연구: 쿠웨이트 신도시를 대상으로)

  • Lee, Sangheon;Jeong, Yeun-Woo
    • Land and Housing Review
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    • v.13 no.2
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    • pp.1-15
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    • 2022
  • This study reviews urban infrastructure and housing management in Kuwait to establish a strategy for going abroad in an urban management sector after the construction of the Kuwait New Town. This study reviews legal systems and governance related to urban infrastructure and housing management as well, offering implications that are collated from international and Korean case studies. By doing so, this paper proposes a governance structure for urban infrastructure and housing management along with key agendas for local institutional improvements. This study suggests that the establishment of a legal system equivalent to the Korean Multi-family Housing Management Act is a key to institutional improvements. The (tentatively entitled) 'Housing Management Act' is proposed to specify the scope and the ways of management in mandatory management subject to local conditions. The direction of going abroad, such as the management scope and the implementation system, discussed in this study can be used as a reference when expanding into other countries in the Middle East that have similar institutional environments to Kuwait in urban infrastructure and housing management.

Necessary to reconsider the recognize of the disuniting of organizations holding intangible cultural assets. - From the viewpoint of Yangjubyeolsandae-nori - (무형문화재 보유단체 분열에 대한 인식(認識)의 재고(再考)를 요(要)함 -양주별산대놀이 사례 중심-)

  • Jeon, Pil-seub
    • (The) Research of the performance art and culture
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    • no.43
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    • pp.405-440
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    • 2021
  • The members of the holding group 'YangjuByeolsandae-nori' (National Important Intangible Cultural Heritage) were divided into two groups in 2010. This means that the internal groupwhich has been going on since the previous period exploded. The subject of the researchis to deal with thedisruption. The first purpose of the research is to record the cause·deployment·ending of the 'YangjuByeolsandaeTalnori'. The second purpose of the research is to reviewthe appropriateness of the administrative measures taken by the Cultural Heritage Administrationin intervention. The thirdpurpose of the research the Cultural Heritage Administration's contribution to the establishment of principles to cope with group disruption. The fourth purpose of the researchis to serve as a reference to the resolution of the disruption of other preservation groups. The result of the research suggests that the administration should recognize that the conflict of the ownership over the group must be resolved in order to boost the overall success of the project, and must establish and respond to the principles. The content is a reconstruction of the explanation. To deal with divisions is also considered to be a field of study. The research which deals directly with the main researcher's problems is put forward in hopes of contributing to the study and contributing to society.

A Study on Keywords Extraction from Entertainment News using Bigdata Processing (빅데이터 처리를 통한 연예 뉴스에서의 키워드 추출에 관한 연구)

  • Yoo, Sang-Hyun;Lee, Sang-Jun
    • Jounal of The Korea Society of Information Technology Policy & Management
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    • v.11 no.6
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    • pp.1503-1507
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    • 2019
  • With the softness of online entertainment news articles and the increasing number of quick-reporting articles in the entertainment sector, many people have access to entertainment front-page articles and are now able to make reviews of celebrities. It is not easy to systematically analyze which news articles are about which celebrities in a real-time environment, although their reputation is a key factor in the entertainment agency's business strategy, which should make the most of its affiliated celebrity resources. Based on the amount of celebrity references mentioned in entertainment news data, this paper proposes an entertainment news keyword analysis system, which extracts celebrities that are the subject of the article and associates them with the celebrity entertainment agency in question. Through the system proposed in this paper, advertisers or entertainment agencies can judge the value of the celebrity as reference material for the business. In addition, it can lay the groundwork for an investment strategy by predicting the outlook for the entertainment company for brokerages and investors.

Development of Sensibility Vocabulary Classification System for Sensibility Evaluation of Visitors According to Forest Environment

  • Lee, Jeong-Do;Joung, Dawou;Hong, Sung-Jun;Kim, Da-Young;Park, Bum-Jin
    • Journal of People, Plants, and Environment
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    • v.22 no.2
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    • pp.209-217
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    • 2019
  • Generally human sensibility is expressed in a certain language. To discover the sensibility of visitors in relation to the forest environment, it is first necessary to determine their exact meanings. Furthermore, it is necessary to sort these terms according to their meanings based on an appropriate classification system. This study attempted to develop a classification system for forest sensibility vocabulary by extracting Korean words used by forest visitors to express their sensibilities in relation to the forest environment, and established the structure of the system to classify the accumulated vocabulary. For this purpose, we extracted forest sensibility words based on literature review of experiences reported in the past as well as interviews of forest visitors, and categorized the words by meanings using the Standard Korean Language Dictionary maintained by the National Institute of the Korean Language. Next, the classification system for these words was established with reference to the classification system for vocabulary in the Korean language examined in previous studies of Korean language and literature. As a result, 137 forest sensibility words were collected using a documentary survey, and we categorized these words into four types: emotion, sense, evaluation, and existence. Categorizing the collected forest sensibility words based on this Korean language classification system resulted in the extraction of 40 representative sensibility words. This experiment enabled us to determine from where our sensibilities that find expressions in the forest are derived, that is, from sight, hearing, smell, taste, or touch, along with various other aspects of how our human sensibilities are expressed such as whether the subject of a word is person-centered or object-centered. We believe that the results of this study can serve as foundational data about forest sensibility.

Negativity, or the Justice for the Unsayable: Susan Glaspell's Trifles ('말할 수 없는 것들'의 부정성 -수전 글래스펄의 『하찮은 것들』 "말할 수 없는 것에 대해 말할 수는 없다. 그것은 오직 제 스스로 말할 뿐이다.")

  • Noh, Aegyung
    • Journal of English Language & Literature
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    • v.55 no.4
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    • pp.567-596
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    • 2009
  • A staple of feminist literary anthologies which was instrumental in reevaluating the writer Susan Glaspell, Trifles(1916) has received numerous comments from feminist scholars so far. Most of them tend to concentrate on the themes of female solidarity and justice challenging the androcentric system of law and order. Lacking in the plethora of thematic approaches to the play's feminist subject, however, are formal analyses considering the way in which the play's generic form assists in communicating such thematic concerns of feminism. An alternative to the typical scenario at the courtroom whose mistreatment of women must have loomed large to the young Glaspell as she revisited the old trial of a midwestern murderess which she had covered as a journalist for a local newspaper in Iowa, Trifles serves as a corrective to the courtroom dynamics offering a 'dramatic justice' as opposed to a strictly legal procedure. What this article discovers at the heart of this dramatic justice is the celebration of the unsayable, or what Wolfgang Iser termed negativity, of women's experience which has no room for reflection in the legal discourse at the courtroom tyrannized by the sayable and the evident. Examining how the dramatic form of Trifles gives a voice to the unsayable of woman's experience, which can not be properly represented at the courtroom governed by the straightforward and definitive male rhetoric, the article argues that the play is a better form than its fictional adaptation "A Jury of Her Peers"(1917) in that it syntactically suppresses the monopolizing operation of the verbal by giving precedence to the scenic and non-verbal which is constituted of setting, props, gesture and eye contacts. As a theoretical frame of reference with which to examine the modes of the unsayable in the play the article brings the concept of 'negativity,' defined by Iser as textual effects or modes of the unspeakable and unsaid, into the discussion of the taciturnity of the absent heroine and the non-verbal representation of drama.