• The korean journal of orthodontics
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• v.28 no.4 s.69
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• pp.581-589
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• 1998

In order to correct a maxillofacial-skeletal disharmony successfully and achieve a favorable facial profile, orthodontic treatment must begin at pubertal growth spurt. Therefore predicting the pubertal growth pattern and evaluating the growth potential is very important. For an orthodontist, estimating skeletal maturity in relation to one's personal growth spurt is essential and it must be considered into the treatment. The objective of this study was to find out whether there was a difference in menacheal age among different malocclusion groups and to evaluate the skeletal maturity at menarche. The subjects were 64 Class I malocclusion patients, 51 Class II patients and 38 Class III patients. Skeletal maturity was estimated from handwrist radiographs of these patients. Handwrist radiographs were taken between 3 months before and after the menarche. The results were as follows. 1. The mean chronologic age of menarche was $12.50{\pm}1.01$ years. 2. For the Class I malocclusion group the mean age of menarche was $12.36{\pm}1.04$ years, for Class II $12.81{\pm}1.03$ years and for Class III $12.32{\pm}0.82$ years. According to these results Class II malocclusion patients started mensturation later than Class I and Class III malocclusion patients. 3. No difference was found considering the skeletal maturity at menarche among the malocclusion groups. 4. The skeletal maturity index at menarche was SMI 7 for $45.10\%$, SMI 8 for $27.25\%$, SMI 9 for $10.46\%$, SMI 6 for $7.84\%$, SMI 10 for $7.84\%$ and SMI 5 for $1.31\%$ patients. 5. Statistically there was a significant correlation between skeletal maturity estimated by handwrist radiographs and menacheal age(p<0.05, r=0.25430).

• The Journal of Aerospace Industry
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• s.65
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• pp.47-69
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• 2003

전시산업은 전 세계적으로 지난 40여 년간 거의 불황을 모를 정도로 발전을 거듭하여 왔으나 2000년대 들어 전시산업 관련 업체들 간의 경쟁의 격화, 사이버 박람회의 출현, 인터넷의 보편화 등으로 새로운 변화의 시기를 맞이하고 있다. 현제 세계 전시산업을 전시면적, 참가업체, 참가 객 수 증가를 중심으로 한 전통적인 발전방향에서 벗어나 새로운 방향으로 빠르게 발전해 나가고 있다. 이러한 가운데 최근 들어 중국의 전시산업은 급속한 경제성장 및 방대한 내수시장을 배경으로 발전 속도가 가속화 되고 있으며 아시아 전시산업의 중심 국가로 발돋움하고 있다. 이제 막 성장 단계에 접어든 우리나라 전시산업은 그간 세계 전시산업 추세를 파악하는데 소홀히 해왔으며 아시아 전시산업 Hub국가로 도약하기 위해서는 해결해야 할 과제가 많다.

• 한국신재생에너지학회:학술대회논문집
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• 2009.11a
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• pp.484-488
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• 2009

분산전원의 양적,질적 성장이 가속화되고 전력계통과의 활발한 연계가 예상되는 시기에 기존계통과는 달리 수용가에 전력품질측면으로 미치는 영향에 대한 심층적인 분석과 대안책을 마련하지 않는다면 수용가의 전기안전을 장담할 수 없게 되었다. 따라서 이에 본 논문은 분산전원중에서 풍력발전단지가 전력계통에 연계시 수용가에 미치는 영향을 실측 데이터를 이용해서 전력품질 영향을 분석하였으며, 풍력발전단지가 충분히 발전을 할 때, 인근 수용가의 고조파 패턴은 주로 영향을 받는다는 사실을 확인 할 수 있었다.

• The Journal of the Korea Contents Association
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• v.9 no.6
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• pp.72-81
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• 2009

This article deals with the relation of korean animation and film policy from the late 1960s to early 1980s. The korean film policy was based on ideology of modernization. Animation industry was under the this policy. The result of effect of this film policy on animation was following. Firstly, there was the boom up of making of animation. Secondly was increasing of subcontract. The encouragement of exportation of government drove many companies to this trend. Lastly, many animations conspired to exercise the ideology of regime. Example was anti-communist animation. In that period the historical specificity of Korean animation had been built in these process.

• International Area Studies Review
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• v.13 no.3
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• pp.551-581
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• 2009

This case study explores the stock sale, the resulting governance structures, and the airport management and development in Beijing Capital International Airport and Shanghai International Airport at Pudong. It is imperative for Incheon International Airport Corporation (IIAC) to change the management paradigm to survive in the changing environment and to become hubs in the relevant regions. And IIAC needs to search for the new ownership and governance structure to cope with the internal and external demands for innovation. In this study, along with the recent trends of the global airport industry, we suggest the implications for the IIAC's major decisions, especially, for the stock sale, the resulting governance structure, and the airport development and management. It is suggested that Korean government retain the majority control in the process of privatization to keep IIAC as a government-owned enterprise to provide the public goods to the citizen. Furthermore, to maximize the value of stock sale, IIAC needs to decide strategically the time and speed in the hybrid form of stock selling using trade sale and IPOs.

• Korean Journal of Environmental Biology
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• v.23 no.3 s.59
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• pp.304-314
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• 2005

The occurrence of cyanobacterial bloom in Korean lakes of the summer is generalized. The characteristic of cyanobacterial community was explored. And the developmental stage of cyanobacterial bloom was divided into three phases, 'preparatory phase', 'bloom phase' and 'extinction phase' Cyanobacterial bloom started during the end of June at site 1, transition Bone of Lake Daecheong. The period of water bloom in normal year was about 60~70 days at site 4, lacustrine Bone, but it was unusually 11 days from July 19 in 1999. M. aerugilnosa first occurred in June, had a peak of standing crop curve from the end of August to the beginning of September in 1998 and 2002 and the end of July in 1999 and 2001. The standing crop of M. aeruginosa occupied $68.1\%$ of phytoplankton, $74.2\%$ of cyanobacteria and $88.8\%$ of genus Microcystis, Anabaena spp. first occurred in April, was above 10,000 cells $mL^{-1}$ from the end of August to about the middle of September in 1998. The effect of rainfalls on cyanobacterial bloom was different according to the phases. The rainfalls of preparatory phase assist the growth of cyanobacteria, but accelerate the decrease of cyanobacteria in extinction phase. In bloom phase, the heavy rainfalls reduce the development of the bloom, while the slight ones display only a little effects.

• 한국신재생에너지학회:학술대회논문집
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• 2011.11a
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• pp.153-153
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• 2011

신 재생에너지 정책이 발전차액지원제도(Feed In Tariff; FIT)에서 신 재생에너지 의무할당제(Renewable Portfolio Standard; RPS)로 변화하면서 원별 경쟁이 가속화되고 있다. 태양광 산업 역시 이러한 환경 변화에 대처해야 하며, 그를 위한 정책 구성이 필요하다. 이에 태양광 산업 정책은 크게 두 부분으로 구분하여 진행해야 한다. 첫째, 폴리실리콘(Poly silicon)을 활용하는 다결정실리콘 태양광에너지에 초점을 맞춘 정책이며, 둘째, 미래에 상용화될 차세대 태양광 에너지에 대한 대비를 위한 연구 개발(R&D) 정책이다. 먼저 다결정실리콘 태양광에너지에 초점에서의 산업 정책은 산업육성정책과 수출정책, 인프라 구성 등으로 나눌 수 있다. 현재 과도한 국가부채로 인한 세계경제 악화로 태양광에너지 업체들의 경제성이 악화하고 있다. 더욱 빨리 그리드 패리티(Grid Parity)를 달성하기 위해 수직통합 등의 필요성이 대두하고 있다. 이에 본 연구는 그리드 패리티 달성시기를 위해 태양광 산업 내 세대 변화를 하는 경우와 하지 않는 경우를 비교하기 위해 고려할 요소를 분석하였다. 현재 신 재생에너지 가운데 태양광에너지는 타에너지원 대비 가격경쟁력을 갖추지 못한 상황이다. 그러나 수출을 고려했을 때의 향후 한국의 차세대 성장동력으로의 발전가능성이 존재한다. 따라서 가격경쟁력이 가장 중요한 영향을 미칠 신 재생에너지 의무할당제 정책 하에서 태양광에너지가 전혀 채택되지 않는 상황을 막기 위한 정책이 필요하다. 그를 위해 필요한 정책적 요소들을 알아보았다. 마지막으로 인프라 구성을 위해 태양광 산업의 가치사슬(Value Chain) 상에서의 기업 분포와 경쟁력에 대한 조사를 시행하였다. 이는 태양광 산업 내의 경쟁력을 갖춘 부문과 그렇지 못한 부문을 구별하기 위함이다. 미래에 상용화될 차세대 태양광 에너지를 준비하는 과정에서는 연구개발 관련 정책이 가장 중요하게 다뤄야 할 부분이며, 그를 위해 정부 차원에서 지원하고자 하는 기술로드맵 등에 대해서 정리하였다.

• Industry Promotion Research
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• v.7 no.3
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• pp.43-51
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• 2022

This study Research is physical in times of great social and cultural influence in adolescence. In terms of spirit, growth is accelerated, developmental and situational stress is experienced in the process of finding identity, and crisis management ability is also insufficient for emotional confusion and frustration. Therefore, it has the characteristic of falling into anxiety and depression for no reason or showing strong hostility or aggression against minor stimuli. By understanding the impulsiveness, which is an important determinant of suicide in adolescents, the seriousness of suicide is recognized through the current status and reality of suicide in adolescents, and stress, which is a risk factor for suicide.It is meaningful to analyze the effectiveness of youth suicide prevention by practicing the value of life respect through life respect education programs to reduce depression and improve self-esteem as a protective factor.

• Journal of Technology Innovation
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• v.31 no.1
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• pp.29-63
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• 2023

The purpose of this study is to analyze the process of changes in regional science and technology policies in Korea and to seek future development directions. In Korea, regional science and technology policies have been implemented since the introduction of the local autonomy system. Since then, it has been implemented in earnest with the establishment of a central government-level plan. The regional science and technology policies have been developed to this day by interacting with national science and technology policies and regional development policies. Nevertheless, due to the path dependence and lock-in effect in the accumulated process, the regional science and technology policies are still subordinate to central government policies. Thus, the establishment of an independent ecosystem for local science and technology is still insufficient. Furthermore, the gap between regions is deepening, such as the growing of aging population, population decline due to low birth rates, job losses due to the recession of local key industry, and the concentration of the youth population in the metropolitan area. The transformation path such as digital transformation and carbon neutrality paradigm is expected to further widen regional disparities. In order to address a comprehensive problem, the implementing system of regional science and technology policies need to be newly established. A framework for reinvention of regional science and technology policy needed in the era of grand societal challenges have to be developed.