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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.

Confirming the Continued Representativeness of an Online/Telephone Panel Using Equivalence Testing

  • Cho, Sung Kyum;LoCascio, Sarah Prusoff;Kim, Sungjoong
    • Asian Journal for Public Opinion Research
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    • v.9 no.2
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    • pp.188-211
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    • 2021
  • Decreasing response rates to traditional survey methods, like face-to-face and telephone interviews, have led survey practitioners around the world to seek new ways of conducting surveys in recent years." The COVID-19 pandemic exacerbated this problem because it made conducting face-to-face interviews even more difficult than before. For example, it made conducting face-to-face surveys infeasible in 2020 in South Korea, and so the Korean Academic Multimode Open Survey (KAMOS) was unable to conduct a planned face-to-face survey to recruit new panel members. The entire 8,514-member panel, established via two-stage probability-based sampling from 2016 to 2019, was invited to take three online/telephone surveys in 2020. Of these panel members, 1,352 responded to at least one survey in 2020. To test to what extent the panel remained representative of the adult South Korean population, we compared the two groups of panel members: those who responded to at least one survey in 2020 and those who did not. After weighting both groups on the basis of age, sex, and geographical area, we analyzed their responses to some of the questions that were asked during multiple rounds of the face-to-face panel-recruiting interviews. Using Cohen's d for survey items that could be analyzed numerically and Cramér's V for categorical items, we were able to conclude that the respondents to the 2020 surveys were equivalent to the non-respondents in terms of both demographics and in the answers they originally gave to substantive questions on a variety of topics related to social science or public opinion research, including questions about quality of life, societal issue, and politics (Cohen's d items <0.2, 95% CI; Cramér's V items <0.1, 95% CI). This analysis may provide a model for others who wish to test the continued representativeness of their panel or who would like to use a different survey mode or change some other aspect of their methodology and test whether it is equivalent to their former methodology. Our success in building a panel that retained its representativeness may be useful to those in other countries where face-to-face surveys had previously been the norm but are becoming increasingly difficult to conduct.

The Ways to Develop the Arbitration Industry in Korea (한국 중재산업 발전 방안)

  • Yoon, Jin-Ki
    • Journal of Arbitration Studies
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    • v.28 no.4
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    • pp.3-42
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    • 2018
  • This paper aims to explore ways to develop the arbitration industry in Korea. The prospects for the promotion of the arbitration industry in Korea are never dim. International arbitration competitiveness is somewhat lower than its competitors at present, but the international economic base to support it is solid, and the domestic arbitration environment seems to be sufficient to support the development possibility of arbitration. Since geographical and economic factors have already been defined, Korea must at least improve the arbitration act with passion and vision for the best one. The arbitration act that is the most accessible to arbitration consumers is the best arbitration act. The important thing is to have an arbitration act that makes people want to use more than litigation or other dispute resolution procedures. There is no hope of remaining as a "second mover" in the field of arbitration law. One should have a will and ambition to become a "first mover" even if it is risky. Considering the situation of the current arbitration law, it is necessary to start an arbitration appeal system in order to become a consumer-friendly arbitration law, and it is necessary to examine ways of integrating the grant of execution clause and enforcement application procedures. The abolition of the condition of Article 35 of the Arbitration Act, which rules the validity of the arbitration award, will help promote international arbitration. Exclusion agreements of setting aside against arbitration awards must also be fully recognized. It is also important to publish a widely cited international arbitration journal. In order to respond to the fourth industrial revolution era, it is necessary to support the establishment of a dispute resolution system that utilizes IT technology. In order to actively engage the arbitrators in the market, it is necessary to abolish the regulations that exist in the Attorneys-at-Law Act. There is also a need to allocate more budget to educate arbitration consumers and to establish arbitration training centers to strengthen domestic arbitration education. It is also necessary to evaluate and verify the Arbitration Promotion Act so that it can achieve results. In the international arbitration market, competition is fierce and competitors are already taking the initiative, so in order not to miss the timing, Korea needs to activate international arbitration first. In order to activate international arbitration, the arbitration body needs to be managed with the same mobility and strategy as the agency in the marketplace. In Korea, unlike in Singapore and Hong Kong, it is necessary to recognize that the size of the domestic arbitration market is very likely to increase sharply due to the economic size of the country and the large market potential it can bring from litigation. In order to promote the arbitration industry, what is most important is to make arbitration activities in accordance with the principles of the market and to establish an institutional basis to enable competition. It is urgently required to change the perception of the relevant government departments and arbitration officials.

Research on Effective Information Visualization Method Based on Mobile Web

  • YOO, Jina;KIM, Tae-Hyeong
    • The Journal of Industrial Distribution & Business
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    • v.11 no.7
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    • pp.41-49
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    • 2020
  • Purpose: The purpose of this study is to recognize the role and necessity of public data visualization through prior research, investigation, and data verification processes. In addition, this study intends to check what factors should be considered in order to visualize data on the mobile web. Through this process, by identifying the cognitive load affecting information visualization by type, as a result, I would like to propose an effective information visualization method to effectively deliver public data related to government policies. Research design, data and methodology: In this study, we analyzed the case of information visualization according to infographics, which has been widely used in the public field among various visualization methods. For this study, a questionnaire survey was conducted for young people in their 20s and 30s with the highest mobile usage rate. Results: Based on the results, IPA (Importance Performance Analysis) was performed to conduct cognitive load test tools for information visualization of public data and confirmed the implications for each type of infographics. Conclusions: As a result of research, in order to efficiently deliver public data on the mobile web, first, it is necessary to construct a visual screen that can be easily identified through clear data. Appropriate graphic elements can be used according to the type to make it easier for users to acquire and understand information. Second, it is necessary to provide useful content in visualizing information. Third, in order to efficiently transmit information and increase understanding of data, it is necessary to visualize information that can induce interest in data and form metaphors. Fourth, it is necessary to visualize information to reduce cognitive load in terms of physical and mental aspects in order to accommodate users' comfortable information. Fifth, in order to effectively deliver public data, it is necessary to compose contents and information that are easy for users to understand. This study examines effective information visualization methods to increase the communication effect of public data in response to changes in the data-based intelligent information society and suggests implications for each type considering cognitive loads to help future public institutions to communicate and accept information.

The Activities of Childhood Cancer Foundation in Taiwan (대만 어린이암재단의 활동)

  • Lee ChungHsiang
    • Korean Journal of Hospice Care
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    • v.2 no.1
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    • pp.182-192
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    • 2002
  • Childhood Cancer Foundation of ROC(CCFROC) has been founded since 1982. Its goal is to provide comprehensive care for cancer children and their families. And in turn, under the provision of good and complete care, they can be back to the school and society. To achieve this goal, it needs to get every body's effort of the society together. The foundation has been founder under this concept and tried to fulfil this task. The first step is to educate the public to know that childhood cancer can be cured and the process of treatment is long and expensive. In order to reach this life-saving procedure, campaigns for raising money is most important thing. Then, pediatric hematologists / oncologists try to organize study group, named Taiwan Pediatric Qncology Goupp(TPOG), to make treatment protocols for childhood cancers. Its primary purpose is to increase the cure rate to prove the earlier the diagnosis and treatment, the better the prognosis. The second step is to provide full support of medical expenses and further to give help for emergent need to living. Through the varieties of active exercises of cancer children or families, foundation provides opportunities for them to share the experience during the different periods of diseases. The third step is to extend the scope of training activities for many kinds of personnel who devote to the care for cancer children. On the other hand, it promotes the cooperation or communication with international organizations and sets up recreation playing ground in the communities. The aim is to provide a comprehensive and integrated care for cancer children during their education, breeding and even accomplishment period. Besides the financial support of medical care, it provides social services to give psychological support for children and their families, to strengthen doctor-patients or doctor-families relationship. The foundation provides the mourning religious activities to cherish the memory of their children who passed away and to comfort their sadness. Since the childhood cancer is curable, its treatment should be active, comprehensive and it needs to provide to all cancer children without exception. Indeed, the work of CCFROC should be changed according to the environment and different time period. But, it needs the full support from the society. We hope the scope and content of the work will be more extended and its achievement will be better than now in the future.

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Children's relationships with teachers and peers, and their early school Adaptation (유아의 교사, 또래관계와 유아교육기관 일과적응)

  • Chung, Duk-Hee
    • Korean Journal of Human Ecology
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    • v.18 no.2
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    • pp.353-362
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    • 2009
  • The study aims to investigate the children's adaptability to early school circumstances and their relationships to teachers and to peers. The examination was done on 110 children aged 4 or 5 at a kindergarten and two child care centers in Seoul. Their 'adaptability to early school' and their 'relationships to teachers and to peers' were rated by their teachers. On the whole, the children subjects are on good terms with their teachers and peers, and they adapt well to early schools. But according to age groups, there were significant differences in the teacher-to-child relationships. Compared to boys, girls show more' adaptability to the early schools', more 'closeness to teachers' and more 'prosociality in peer group'. The 'closeness to teachers' has a positive relation to the 'sociability', 'prosocial behaviors' and 'leadership of peer group', but the 'conflict with teachers' has a negative relation to the peer group relationships. And the' children's relationships with teachers and with peers' were significantly related to their early school adaptability. The 'prosociality', the 'closeness' and the' dependency' were significantly related to the' adaptability to early school' in order.

Phenomenological Analysis of Non-face-to-face Experiment and Non-face-to-face Interaction - Focusing on the Experiences of Engineering Freshmen (비대면 실험실습 수업 경험과 비대면 상호작용 경험의 현상학적 분석 - 공과대학 신입생의 경험을 중심으로)

  • Kang, Eugene
    • Journal of Engineering Education Research
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    • v.25 no.2
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    • pp.32-41
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    • 2022
  • The purpose of this study was in a pandemic situation caused by COVID-19 to explore the online distance experiments and interaction of engineering freshmen, and to identify practical difficulties, resulting in to derive implications. Seven freshmen from engineering college participated in the interview, of which data were analyzed based on phenomenological analysis methods. The types of non-face-to-face experiments experienced by students were complete non-face-to-face experiment, mixed face-to-face experiment, and fusion face-to-face experiment. Students were completely isolated in time and space in complete non-face-to-face experiment. In biweekly mixed face-to-face experiment, isolation was halved. In fusion face-to-face experiment, isolation was removed. Non-face-to-face interactions can be characterized by restrictions on simultaneous activities, on rapport formation, and on observation opportunities. Based on these results, three implications were derived: First, it is necessary to allow students to manage time and space constraints on their own in non-face-to-face experiments. Second, support is needed to solve the difficulty of forming rapport, which is a characteristic of non-face-to-face interaction. Third, an opportunity to observe the interaction between other students and professors should be provided.

Factors Affecting the Intention to Revisit and to Recommend to others a Korean Medicine Clinic (한방의료기관의 재방문 및 추천의사에 영향을 미치는 요인)

  • Kim, Jae-Woo;Kim, Sung-Ho;Kang, Jung-Kyu
    • Journal of Society of Preventive Korean Medicine
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    • v.26 no.2
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    • pp.75-85
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    • 2022
  • Objectives : The purpose of this study is to analyze the association between the satisfaction of Korean Medicine users and their intention to revisit and to recommend to others. Methods : This study conducted frequency analysis, chi-square test, and logistic regression analysis on 1,010 male and female Korean Medicine users aged 19 or higher in the country using data from the 2017 Korean Medicine Utilization and Herbal Medicine Consumption Survey. Results : The results of analyses revealed that the facilities in Korean Medicine clinics, the results of treatment, and the attitude of nurses and medical staff were the significant influencing factors on the intention to revisit and to recommend to others. Other than the above factors, the attitude toward medical treatment of Korean Medicine doctors and the satisfaction with an explanation of the treatment procedures were found to be important influencing factors on the intention to recommend to others. Conclusions : In order to increase the intention to revisit and to recommend to others a Korean Medicine clinics, the top priority lies in both proving high-quality medical services and promoting kind attitudes of medical staff.

How to Foster Digital Payment Service for Millennials and Generation Z? (MZ 세대의 디지털 결제 서비스의 결정요인)

  • Cho Yooncheong;Oh Sanggune
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.19 no.3
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    • pp.45-60
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    • 2023
  • The purpose of this study is to explore factors that affect millennials and generation Z customers' perception on intention to recommend to use the digital payment services and invesetigate factors that affect perception on sustainable growth of the digital payment services. This study applied the following research questions: i) how perceived brand value, easy to use, personalization, open to public, and social value affect intention to recommend to use the digital payment services and ii) how perceived public policy, promotional strategy, and prspects affect intention to recommend to use the digital payment services to others. This study conducted an online survey. This study applied factor, ANOVA, and regression analysis to test hypotheses. The results of this study found that effects of personalization, open to public, and social value on intention to recommend the service showed significance in the case of millennials, while effects of brand value, easy to use, and open to publis on intention to recommend the service showed significance in the case of generation Z. The results provide managerial and policy implications on how to apply better strategies and pepare policies to enhance adoption of the digital payment service in cases of millennials and generation Z.

A Study on "How to Promote Local Food & Restaurant Brands to go global" (국내 외식 브랜드 해외 진출 활성화 방안에 관한 연구)

  • 조구현
    • Journal of Applied Tourism Food and Beverage Management and Research
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    • v.8
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    • pp.197-216
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    • 1997
  • In tandem with Korea's globalization efforts, local restaurant business in growing leaps and bounds. By the year 2000, the industry is expected to soar to one of the major industries with hosting many large-scale international events. Rising to the occasion, the Korea Restaurant Industry needs change itscurrent modus operandi focusing on management skill improvement and globalizatin of its network. In Particular, they need to have their competity edge against multinational Restaurant brands both in local and overseas markets. To further develop the local industry, we need to work on the following areas. 1. Top management is required to show firm commitment to development of local brand that can be a real player in the global market. 2. To make any impact in the global market, a specific marketing strategy needs to be developed fit for each market. 3. To save initial investment expenditure, a close cooperation among local industries is prerequisite. 4. To make the industry easier to go global, local government needs to provide them with financial and taxational benefits.

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