소아에서 남성화를 보인 부신 피질 종양 1예

김성용,김태윤,백무준,이문수,김형철,민용식,김대중,김창호,Kim, Sung-Yong,Kim, Tae-Yoon,Baek, Moo-Jun,Lee, Moon-Soo,Kim, Hyung-Chul,Min, Yong-Sik,Kim, Dae-Joong,Kim, Chang-Ho 대한소아외과학회 1999 소아외과 Vol.5 No.2

Adrenal cortical tumors are rare in adults and children. Most are malignant and functional. The principal clinical features are virilization, Cushing's syndrome, hyperaldosteronism and feminization. Recently, we treated a case of virilizing adrenal cortical tumor in a 26 month-old boy. The diagnosis was made by hormone assay, abdominal CT and tissue pathology. Right adrenalectomy was successful performed. Pathologic examination revealed an adrenal cortical adenoma with vascular invasion.

표준 소개 - 정보통신 공사 설계기준 표준화 현황

김성용,김효실,Kim, Seong-Yong,Kim, Hyo-Sil 한국정보통신기술협회 2017 TTA저널 Vol.2017 No.-

앵커간격 및 하중방향에 따른 앵커의 전단내력

김성용,Kim, Sung-Yong 한국방재학회 2003 한국방재학회논문집 Vol.3 No.3

본 연구는 비균열 무근콘크리트에 매입된 앵커의 앵커간격 및 하중방향에 따른 전단내력 평가를 목적으로 하고 있다. 이를 위하여 앵커의 전단내력 설계식을 비교 평가하였으며, 실험값과 기존의 설계식의 예측값을 비교 분석하였다. 그 결과, 앵커간격 및 하중방향에 따른 CCD 방법 및 EOTA 설계식은 합리적인 설계방법임을 알 수 있었다. This study concerns the prediction of shear capacity, as governed by concrete breakout failure of the anchors under load applied angle and an group anchors at an edge and installed in uncracked, unreinforced concrete. For this purpose, the methods to evaluate the shear capacity of the anchors in concrete are summarized and the experimental data are compared with capacities by the two present methods: the method of ACI 349-90 and concrete capacity design (CCD) method.

국민연금의 수급부담구조분석과 지속가능성

김성용,방준호,박유성,Kim, Seongyong,Bang, Junho,Park, Yousung 한국통계학회 2015 응용통계연구 Vol.28 No.4

국민연금은 각종 사회적 위험으로부터 국민을 보호하고 빈곤을 해소하는 대표적인 사회보장제도로, 노령인구의 삶의 질에 큰 영향을 미치고 있다. 그러나 급속도로 진행되고 있는 고령화와 출산율의 감소는 국민연금의 지속가능성을 위협하고 있다. 국민연금의 지속가능성을 점검하고 유지하기 위해 국민연금연구원에서는 5년마다 재정추계를 실시하고 있으며, 정부에서는 이를 바탕으로 국민연금의 지속가능성을 높이기 위해 수급액을 낮추고 있다. 하지만 OECD 국가 중 노인 빈곤율이 가장 높다는 현실을 고려할 때, 단순히 수급액을 낮추는 현재의 국민연금 제도 변화는 국민연금의 노후소득보장 기능을 훼손할 우려가 높다. 본 논문에서는 먼저 국민연금 재정추계에 대한 방법론을 인구, 가입자, 수급자 추계의 측면에서 논의하고 적립금 추계와 재정고갈연도를 점검할 것이다. 그리고 인구변수, 제도변수, 그리고 경제변수가 국민연금 적립금과 재정고갈연도에 미치는 영향을 파악하기 위해 민감도 분석을 할 것이며, 국민연금의 수급부담구조를 분석하여 세대내, 세대간, 소득계층간 공정성을 평가하도록 한다. 마지막으로 국민연금의 지속가능성을 연금 기여율과 수급률(소득대체율)의 관점에서 점검하며, 본 논문에서 새롭게 정의한 부양비(modied dependency ratio)지수를 통해, 부과식 제도의 도입이 없이 단순하게 기여율과 수급률의 조정으로는 국민연금의 개혁이 불가능하다는 것을 보여줄 것이다. The National Pension of Korea is a public social security system designed to alleviate social risks and poverty that has had a major impact on the quality of life for the aging population. However, a rapidly aging population and low fertility threaten the sustainability of national pension in Korea. The National Pension Research Institute publishes a nancial projection every ve years; consequently, the government has lowered the entitlements for the sustainability of national pension based on the projection results. The current reform of the pension system that arbitrarily reduces the entitlements might detract from the income security role of the national pension for pensioners without accounting for the highest elderly poverty rate in the OECD countries. We first discuss methods for the financial projection of the national pension in terms of population, subscribers, and pensioner projections in order to estimate the pension reserve fund and the financial depletion year. We also conduct a sensitivity analysis for population variables, institutional variables, and economic variables based on pension reserves and the financial depletion year. We evaluate intergenerational fairness between the income hierarchy by conducting a money's worth analysis. Finally, we investigate the possibility of the sustainability of national pension by adjusting pension contributions and entitlements (income replacement rate). A new dependency ratio shows that a simple reform of the national pension does not secure the sustainability of the national pension without adapting a pay-as-you-go system.

An Analysis on Research Funding of Geosciences in Korea

김성용,허철호,민태선,Kim, Seong-Yong,Heo, Chul-Ho,Min, Tae-Sun The Korean Society of Economic and Environmental G 2007 자원환경지질 Vol.40 No.6

This study analyzed trends in geoscientific research funding provided by the Korea Science and Engineering Foundation (KOSEF) and examined strategies to promote geoscientific research. The strengths of geoscientific research in South Korea include the excellent academic quality of researchers, established research infrastructure, and inter-disciplinary research. Weaknesses include insufficient leadership in related societies and institutes, insufficient research productivity, and the exclusion of the field from nationally supported large-scale research projects. Opportunities for expanded research include environmental issues, the sustainable use of natural resources, the promotion of international research cooperation, and the initiation of national efforts to find solutions for regional problems. However, growth in the geosciences is threatened by prioritized investment in fields such as biotechnology, nanoscience, and information technology, a dismissive attitude toward the growth of basic sciences, and an increased demand for projects with visible economic and societal impacts. In terms of funding, group-based programs receive more support than individual-based programs. Between 1978 and 2006, KOSEF invested 1,744 billion won ($1.873 billion US) in a total of 46,748 basic research projects. Of this amount, 62.1 billion won ($66.7 million US) was allocated to 1,901 projects in the geosciences, which was roughly 2.6-10.6% of the money available in a given year. These funds were used to support research and development, the development and maintenance of necessary infrastructure, and the education and training of geoscientists.

미국 지질과학분야 신규 연구주제 및 전략분석

김성용,안은영,배준희,이재욱,Kim, Seong-Yong,Ahn, Eun-Young,Bae, Jun-Hee,Lee, Jae-Wook 대한자원환경지질학회 2016 자원환경지질 Vol.49 No.1

미국과학재단(NSF) 지구과학위원회(GEO)의 지질과학사업단(EAR)은 미국의 국가 전략적 필요성에 직접적으로 적용될 수 있는 지구시스템에 관한 기반 기초 지식을 얻기 위한 기초연구를 지원하고 있다. 2011년도에 국가과학위원회(NAS)의 지구과학 신규 연구유망주제위원회는 향후 10년 동안에 급격한 발전에의 대응을 위한 지질과학분야 기초 과학연구의 특정주제를 도출하였다. 다학제적 접근에 의해 정리한 지질과학사업단의 심부지질과정과 지표지질과정분야 유망주제들은 (1)초기 지구연구, (2)열-화학적 내부 동력학 및 휘발성분 분포, (3)단층작용과 변형과정, (4)기후, 지표변화, 판구조, 심부지구과정의 상호작용, (5)생명, 환경 및 기후의 공동 진화, (6)자연과 인위적 변화에 동조화된 수리지형-생태계 반응, (7)육상환경과 글로벌 변화영향에서 생화학 및 물순환 등이다. 우리나라에서도 임계구역 연구(Critical Zone studies) 등의 미래분야의 연구가 활발하게 추진되고 있다. 이러한 미래의 거대연구를 활발하게 추진하기 위해서는 추가 연구지원 정책이 필요하다. The essential role of the Division of Earth Sciences(EAR) in the Directorate of Geoscience(GEO) of National Science Foundation of America(NSF) is to support basic research aimed at acquiring fundamental knowledge of the Earth system that can be directly applied to the United States' strategic needs. The 2011 Committee on New Research Opportunities in the Earth Sciences(NROES) of the National Academy of Sciences(NAS) identified specific areas of the basic earth science research scope of the EAR that were poised for rapid progress during the next decade. Quantified by interdisciplinary approaches, the Committee highlighted the following topics relating to the EAR Deep Earth Processes and Surface Earth Processes sections: (1) the early Earth; (2) thermochemical internal dynamics and volatile distribution; (3) faulting and deformation processes; (4) interactions among climate, the Earth surface processes, tectonics, and deep Earth processes; (5) co-evolution of life, environment, and climate; (6) coupled hydrogeomorphic-ecosystem response to natural and anthropogenic change; and (7) interactions of biogeochemical and water cycles in terrestrial environments. We also promote future research challenges such as the critical zone studies. In order to promote more active such a huge future research challenges, additional research support policies are needed.

정책논단 - 주유소 폭발사고 이후 가짜석유와 전쟁선포

김성용,Kim, Seong-Yong 대한석유협회 2011 석유와 에너지 Vol.283 No.-

영남대학교 의과대학 의예과 교육과정 개발과 편성 사례

김성용,Kim, Seong Yong 연세대학교 의과대학 2017 의학교육논단 Vol.19 No.3

After Yeungnam University's College of Medicine was established in 1979, the curriculum for a preclinical medical education course was developed and implemented. Several modifications have since been made to the curriculum which was driven by changes in national policies and in the medical education environment. In recent years, it has become necessary to complement the weaknesses or shortcomings in the curriculum that were discovered during the basic medical education assessment process of the medical college. Since 2009, Yeungnam University has run two medical courses: a 6-year college of medicine course and a 4-year medical school course. However, as a result of changes in national policy, Yeungnam University decided to offer only the 6-year college of medicine course with an entirely new curriculum which will be implemented in 2017. The new curriculum for the preclinical medical education course consists of 36 credits of cultural essentials courses, 44 credits of major required courses, and 2 credits of major elective courses. The curriculum development requires the support of the university and/or college, the ensured independence of the curriculum development organization, and the cooperation and attention of fellow professors. Continuous efforts are needed to check, evaluate, and improve the curriculum.

해방이전 외국인에 의한 서구식 한반도 지질광상조사 성과고찰연구

김성용,이재욱,Kim, Seong-Yong,Lee, Jae-Wook 대한자원환경지질학회 2015 자원환경지질 Vol.48 No.1

Advanced geological surveys and exploration activities were first carried out in Korea in 1884 in accordance with a treaty of friendship and commerce between Great Britain and Korea and a treaty of friendship and commerce between Germany and Korea. The first paper by Gottsche, C. was also published in a German Journal in 1886. Efforts toward independent acquisition of Western geological survey and exploration technology were actively promoted by the Korean Empire in the early 1900s, but were frustrated by the Japanese Empire. Systematic geological surveys and exploration were conducted in Korea by Japanese geologists during the Japanese occupation. A basic geological maps(61sheets), a bulletin on the geological survey of Korea, a bulletin and technical report on deposits in Korea, and a coalfield geological survey report were published during this period. Overall, the intentions under lying the geological surveys and exploration activities by foreigners in Korea prior to the Japanese occupation were questionable. However, the results of these surveys and explorations themselves can be evaluated as positive in terms of academic performance. 우리나라에서 최초의 서구식 지질자원 조사 탐사활동은 한-독 및 한-영 통상수호조약에 따라 1884년도에 본격적으로 실시되었다. 이를 토대로 최초의 논문도 Gottsche에 의해 1886년도에 독일에서 게재되었다. 1900년대 초에는 대한제국의 독자적인 서구식 지질자원기술 확보 및 조사 탐사활동의 노력도 있었으나 불행하게도 일제에 의해 좌절되었다. 일제강점기에 일본인에 의해 전국토를 대상으로 체계적인 지질자원 조사가 실시되었고, 이 시기에 기본지질도 61매 작성과 지질조사요보, 광상조사보고 및 요보, 탄전조사보고 등이 발간되었다. 결론적으로 개화기로부터 일제강점기까지의 외국인에 의한 우리나라 국토에서 수행된 서구식 지질자원 조사 탐사활동의 의도는 순수하지 않았으나 조사 탐사 결과 그 자체만 판단한다면, 학술적 성과는 매우 크다고 할 수 있다.

2차 고조파 신호를 이용한 전치 왜곡 선형화기 설계

김성용,김영,Kim Sung-Yong,Kim Young 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.12

본 논문에서는 2차 고조파 성분들의 feedforwarding에 의한 전치 왜곡 선형화기를 제안하였다. 제안된 선형 화기의 고조파 발생기는 2차 고조파 신호를 추출할 수 있는 소 신호 증폭기로 구성되어 있으며, 2차 고조파 신호는 벡터 모듈레이터에서 주 신호와 진폭 변조되어 3차 혼변조 신호를 생성하고 이것의 크기와 위상을 조절할 수 있다. 이러한 전치 왜곡 선형화기의 특성은 전력 증폭기의 혼변조 왜곡 신호들을 효율적으로 억압할 수 있었으며, 반송파 2-톤 신호를 인가했을 때 3차 혼변조 왜곡 특성의 비(C/I)는 20 dB 이상의 개선 효과를 얻었고, CDMA(IS-95) 4FA 신호를 인가했을 때 인접 채널 전력비는 5 dB 이상 개선시켰다. In this paper, a new predistortion linearizer using second harmonic components feedforwarding is proposed. The harmonic generator of the proposed predistorter that consists of a small signal amplifier extracts second harmonic signals. A vector modulator that modulate fundamental signal with second harmonic signals, generates the inverse third order intermodulation distortion signals and controls amplitude/phase of them with modulation factors. As a result, this linearizer is suppressed IMD3 signals of power amplifier effectively. The test results show that the third order IMD of power amplifier is suppressed more than 20 dB for CW two-tone signals. Also, it's improved the adjacent channel power ratio(ACPR) more than 5 dB for CDMA(IS-95) 4FA signals.