Welfare Effects of Voluntary Import Expansion : Using Cournot Model 쿠르노 모델을 이용하여

Sim, Sung-Hoon 慶州大學校 2005 論文集 Vol.18 No.1

그 동안 수입할당제(import quota)에 대한 대안으로써 자발적 수출제한(voluntary export restraint)이라는 정부의 정책에 관하여 활발하게 연구되어 왔으나, 자발적 수입확대(voluntary import expansion) 정책에 대한 연구는 그리 활발하지 못하였다. 본 연구는 단순한 쿠르노 모델을 이용하여, 자발적 수입확대정책을 채택한 나라의 후생 효과(welfare effect)에 대한 몇 가지 이론적 결론을 도출하였다. 첫째, 자발적 수입확대 정책을 채택한 나라는, 자유무역의 경우에 비하여 가격을 상향하는 전략을 채택함으로써 이익을 극대화 할 수 있음을 보여 준다. 둘째, 자발적 수입확대가 매우 클 경우에는 후생효과가 불확실하다는 결론이 도출되었다. 셋째, 자발적 수입확대와는 다르게 자발적 수출제한은 가격경쟁에 의하여 한 나라를 시장에서 퇴출시키지 못한다는 것을 보여 주었다. 또한 본 연구는 한 나라의 경제 규모가 매주 작은 경우뿐만 아니라, 그 규모가 매우 큰 경우에도 그 나라는 자발적 수입확대를 무시할 수 있다는 점을 이론적으로 보여 준다.

에스테르류에 의한 2-프로판올의 액-액 추출에 관한 연구

鄭詳勳,申鉉心,朴東源 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2

The experimental binodal curves and tie-line data were determined for ternary systems of 2 propanol-water with ethylacetate, butylacetate and isoa-mylacetate as solvents at 25℃, and those tie-line data were used to examine thermodynamic consistency. The experimental tie line data were correlated with UNIQUAC and modified UNIQUAC model and the parameters in each model and the calculated values of tie line were predicted. The distribution and selectivity curves in the equilibrium of ternary systems were determined to find the extraction effect.

古代그이스人들의 身體觀에 관한 硏究

鄭宗勳,李東鍵,沈乘燮 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-

This study was intended to probe into the Greeks' somatic idea which is widely regarded as the very source and basis of modern physical eaucation. The researches compared the idea of human body in the Greek era with that held by the people before the Greek age. The following paragraph is thought to best summarize the Greeks' idea of humn body. 1. The approaches of modern physical education are focused on viewing human body as a psychosomatic unit, overcoming the traditional idea since the Middle Ages which says body is lower than mind. 2. The primitivies prior to the old Greek age had a viewpoint that inner part of body is dwelled by spirits, because they were under the great influence of animism. 3. To understand the Greeks' somatic view, it is necessary to divide the Greece Age into two eras; 1) Ancient time 2) The classical time in the first part or ancient time of the Greek age from the early 6th century to the early 5th B.C. The Geek people had no concrete idea of human body and rather interpreted body and mind as a whole, undivided being. Turning into the classical Greek Age, monism about human body and mind began to be transformed into dualism. This change in somatic view is believed to have been influenced a lot by the imported Orphic cut. But the Greeks' view of human body in the classical time was its superiority to mind, resulting from the idea that body and mind form a unit. While a well-proportioned person was merited, mind or soul was degraded as a mere shadow of a week person.

BTX에 의한 2-프로판을 액-액 추출계의 상평형에 관한 연구

鄭詳勳,申鉉心,朴東源 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1

The experimental binodal curves and tie line data were determined for ternary systems of 2-propanol-water with benzene, toluene and o-xylene as solvents at 25℃, and those tie line data were used to examine thermodynamic consistency. The experimental tie line data were correlated with UNIQUAC and modified UNIQUAC model and the parameters in each model and the calculated values of tie lines were predicted. The distribution curves in the equilibrium of ternary systems were determined to find the extraction effect.

두경부 유리피판 26례 분석

정복성,윤근철,심경보,고경석,한상훈 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

Twenty four patients(21 males and 3 females) aged 14 to 70 years underwent 26 microvascular free tissue transfers in head and neck reconstructions from April 1990 to July 1992 (27 months) . Nineteen cases were tumors in head and neck area, and four were acquired deformities such as burn alopecia, burn scar contracture of the neck, Romberg disease and frontal sinus infection, and one was hemifaclal microsomia. The free flaps were executed successfully in 15 upper aerodigestive tracts, in 2 scalps and 3 skull bases and in contouring and resurfacing six facial and cervical lesions. The selection of donor site was bases upon the location of defect and the volume of tissue required : the forearm free flap was used in 11 cases, the rectus abdominis in 5, the groin in 2, the jejunum in 2, the occipital scalp in one, the first toe web space in one, the latissimus dorsi in one, the serratus anterior in one, the parietotemporalis fascia in one and the omentum in one. The free tissue transfers were primarily indicated in all patients in our series and there was no flap failure. The complications were minimal and the morbidities low. A free flap in the head and neck area is not only the most expedient method of reconstruction but also either the most reliable or the only available one in some clinical situations.

용매-물-1-프로판올계의 액-액 평형

박동원,정상훈,신현심,서진기,이진우 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1

Due to the rising cost of energy, new separation processes based on extraction are becoming more attractive than before. Thus, the need for calculating and predicting liquid-liquid equilibria(LLE) compositions has very much increased. The purpose of this study is to determine the binodal curves, tie lines, plait points and selectivity for the temary systems of 1-propanol-water with toluene, ethyl-acetate, 1-butanol, n-hexane and amyl alcohol as solvent and also for the quarternary solvent-NaCl salt solution-1-propanol systems at 25℃.

UHF대역 RFID 수신단(리더)의 지터(비트동기) 및 글리치 제거회로 설계

김상훈,이용주,심재희,이용석,Kim, Sang-Hoon,Lee, Yong-Joo,Sim, Jae-Hee,Lee, Yong-Surk 한국통신학회 2007 韓國通信學會論文誌 Vol.32 No.1A

본 논문에서는 ISO/IEC 18000-6C 표준안을 만족하는 UHF대역 RFID 수신단(리더)의 지터(Jitter)처리와 글리치제거 알고리듬 및 설계방안을 제안하고 이를 이용한 리더를 구현하여 실제 TI(Texas instrument) Gen2 태그의 응답을 분석하였다. ISO/IEC 18000-6C표준안은 Reader에서 Tag로 데이터 전송 시 +/-1%의 오차와 Tag에서 Reader로 데이터 전송 시 최대 +/-22%의 오차를 허용하도록 정의하고 있다. 이러한 허용오차범위 내의 데이터에 대해 본 논문에서 제시한 회로는 기존의 PLL(DPLL, ADPLL)을 이용한 방식이 아닌 최대허용치(tolerance)와 허용치누적을 이용하여 일정치의 오차범위를 허용하며 디코딩 하도록 설계하였다. 또한 글리치와 지터제거 알고리듬의 기본원리를 동일하게 구성하여 글리치제거와 지터제거를 따로 구분하지 않고 하나의 기능으로 동작하게 한다. 주 클럭은 19.2MHz로 설정하였으며 LF는 국내 전파법에 맞도록 40kHz로 설정하였다 시뮬레이션결과 15%이하의 위상지터를 가진 입력데이터에 대해 판독에러율은 0이었으며 $15%{\sim}22%$ 위상지터를 가진 입력데이터에 대해서 는 0.000589였다. 그러나 동적LF생성회로를 사용한 결과 $15%{\sim}22%$ 위상변화를 가진 입력데이터에 대해 판독에러율은 0이었으며 표준안에 정의된 최대 +/-22%오차 범위내의 지터 발생에 대해서 판독에러율은 0이었다. In this paper, we propose an implementation and an algorithm of 'Jitter and Glitch Removing Circuit' for UHF RFID reader system based on ISO/IEC 18000-6C standard. We analyze the response of TI(Texas Instrument) Gen2 tag with a reader using the proposed algorithm. In ISO/IEC 18000-6C standard, a bit rate accuracy(tolerance) is up to +/-22% during tag-to-interrogator communication and +/-1% during interrogator-to-tag communication. In order to solve tolerance problems, we implement the Jitter and Glitch Removing Circuit using the concept of tolerance and tolerance-accumulation instead of PLL(DPLL, ADPLL). The main clock is 19.2MHz and the LF(Link Frequency) is determined as 40kHz to meet the local radio regulation in korea. As a result of simulations, the error-rate is zero within 15% tolerance of tag responses. And in the case of using the adaptive LF generation circuit, the error-rate varies from 0.000589 to zero between 15% and 22% tolerance of tag responses. In conclusion, the error-rate is zero between 0%-22% tolerance of tag response specified in ISO/IEC 18000-6C standard.

Stock and Real Estate Markets in Korea: Wealth or Credit-Price Effect

Sung Hoon Sim,Byoung Ky Chang 한양대학교 경제연구소 2006 JOURNAL OF ECONOMIC RESEARCH Vol.11 No.1

Clinical implication of change in immune parameters: comparison between advanced cancer patients and normal volunteers (초)

( Sung Hoon Sim ),( Young Il Koh ),( Hyun Mi Bae ),( Sun Joo Lee ),( Ji Eun Yun ),( Yong Oon Ahn ),( Tae Min Kim ),( Se Hoon Lee ),( Dong Wan Kim ),( Dae Seog Heo ) 대한내과학회 2008 대한내과학회 추계학술대회 Vol.2008 No.-

Bilateral Trade Balance between Korea and Her Trading Partners: the J-curve Effect

Sung-Hoon Sim,Byoung-Ky Chang 한국무역학회 2006 Journal of Korea trade Vol.10 No.3

The primary purpose of this paper is to examine the short-run and long-run relationships between trade balance and real exchange rate using bilateral data for Korea vis-à-vis ten of her major trading partners on a quarterly basis over the period of 1990Q1 to 2006Q1. Based on the ARDL bounds test, we find evidence of cointegration for 7 out of the 10 trading partners. The result also shows that a depreciation of the won leads to a long-run improvement in Korea s bilateral trade balance vis-à-vis the USA, Japan, Germany, China and the UK. Our finding of the long-run negative (positive) relationship between domestic (foreign) income and the domestic bilateral trade balance appears to be supportive of the general view, in the case of Korea, that emphasizes the demand effect of both domestic and foreign income on the domestic trade balance. The evidence of short-run J-curve phenomenon is present rather weakly in Korea s bilateral trade with the UK, Germany and China. A real depreciation of the won, however, leads to an initial improvement in Korea s bilateral trade balance with many countries.