토지문제가 한국경제의 효율성 및 공평성에 미친 영향

한동근 嶺南大學校 附設 社會科學硏究所 1998 社會科學硏究 Vol.18 No.1

<요약문> 본 연구는 토지투기와 그로 인한 고지가, 그리고 고지가가 파생시키는 여러 가지 비효율성에 주목하여 우리가 직면하고 있는 경제위기의 원인을 진단한다. 헨리 조지의 이론적 틀을 이용하는 본 연구는 한국경제의 고금리, 고임금, 고물류 비용의 원인을 추적하여 토지투기가 한국의 고비용-저효율 경제구조의 뿌리에 자리하고 있음을 보인다. 또한 토지투기 문제는 막대한 자본이득의 발생으로 한국경제의 효율성 만이 아니라 공평성도 크게 저해하고 있음도 밝힌다. 본 연구는 토지문제를 단순히 '토지문제'로 만 파악해서는 안된다는 조지주의자들의 시각에 주목하여 한국경제의 효율성과 공평성을 동시에 개선할 수 있는 정책방향으로 토지보유세의 강화를 제안한다. 학문분류기호 : C2100(경제학)

투기적 토지수요와 생산

한동근 영남대학교 산경연구소 1998 영상저널 Vol.6 No.-

의료용 생체접착제의 최근 연구개발 동향

한동근,안광덕 한국생체재료학회 2003 생체재료학회지 Vol.7 No.3

Bioadhesives have been widely utilized for sealing, immobilization, and adhesion of biological tissues and organs. Their use can be divided into two categories such as soft and hard tissues according to application parts. The former includes cyanoacrylate, fibrin glue, protein glue, polyurethane, marine adhesive, etc. and the latter comprises surgical bone cements and dental adhesives and cements. Recently, Dermabond, 2-octyl cyanoacrylate, was approved by the FDA as a topical skin adhesive and thus it is expected to be extended to apply for wound closure and sealing of surgical incisions. This review deals with recent trend of R&D in bioadhesives including tissue adhesives and their characteristics and uses in medicine.

조직공학용 생체고분자 재료

한동근 한국고분자학회 1999 고분자 과학과 기술 Vol.10 No.6

농지시장 추세 파악을 위한 가격지수 개발

한동근,이향미,김태영,김윤식 한국농촌계획학회 2022 농촌계획 Vol.28 No.4

The change in farmland price has almost always been focused on not only farmers but policy-decision makers; for farmers to get information before purchasing farmland; for policy-decision makers to use appropriate policy tools to stabilize the market. So far the change in farmland price has been calculated as a form of average change on a year-to-year base. Such calculations have become one of the causes which lead to misunderstanding of the farmland market because the year-to-year average change includes changes in price as well as changes in the number of trades and sizes of traded farmland. This paper is designed to suggest a proper method of building a price index for farmland as a tool to review the price change. We considered the applicability of several types of price indices and concluded that a Laspeyres-type price index is the most reasonable choice. A Laspeyres-type price index, however, has a shortcoming in which a reference year’s weight may affect the whole period of an index. Thus, we also suggest two other weights, a three-year average including a reference year and a share of farmland. All indices show that farmland prices have risen significantly in recent 10 years. We hope that the indices will be developed into one of the government’s formal statistics.

토지문제에 관한 기독교 경제학

한동근 한국로고스경영학회 2006 한국로고스경영학회 학술발표대회논문집 Vol.2006 No.6

헤파린화 혈액 적합성 고분자 재료

한동근,김영하 대한의용생체공학회 1987 의공학회지 Vol.8 No.2

A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network).

Characteristics of PLLA Films Blended with PEG Block Copolymers as Additives for Biodegradable Polymer Stents

한동근,Jin Hyang Kim,Jong-Hee Kang,이봉수,Jiyeon Choi,박귀덕,노혜란 대한의용생체공학회 2011 Biomedical Engineering Letters (BMEL) Vol.1 No.1

Purpose Biodegradable poly(L-lactide) (PLLA) has been widely used as stent materials with good biocompatibility and its controllability over biodegradation rate. However,PLLA has several restrictions such as prolonged degradation and limited swelling. In this study, PLLA films blended with poly(ethylene glycol) (PEG)-based block copolymers as additives were fabricated to investigate the effect of PEG based additives. Methods Various PEG-based di- or tri-block copolymers were synthesized by ring opening polymerization using methoxy PEG (MPEG) and PEG as an initiator. The block copolymers were then blended with PLLA at various mass ratios. Swelling and mechanical properties of the blended PLLA films were characterized and compared with those of control PLLA. Results It was found that sol-gel phase transition of block copolymers was depended on type and concentrations of the copolymers. PLLA films blended with di- or tri-block copolymer (MPEG-PLLA or PLLA-PEG-PLLA) showed higher degree of swelling than hydrophobic control PLLA. In addition,mechanical properties of block copolymer-blended PLLA films were slightly reduced in comparison to those of control PLLA. Conclusions PLLA films blended with hydrophilic PEG-based block copolymer as additives demonstrated improved swelling property as well as mechanical properties. This approach is expected to be useful for fabrication of biodegradable and drug releasing polymer stents.

재활용 플라스틱 펠렛과 벨벳콩(Mucuna pruriens) 추출물의 항산화 효능 상관관계 검증

한동근,배민준,갈격,김현정,김세기,안봉전 사단법인 대한화장품학회 2023 대한화장품학회지 Vol.49 No.1

In this study, the correlation between recycled plastic pellets and the antioxidant efficacy of the extract of Mucuna pruriens (M. pruriens) was verified. After immersing recycled plastic pellets in M. pruriens extracts, they were stored for 30 days under various temperature conditions, and then analyzed for DPPH radical and ABTS+ radical erasing ability, SOD-like activity, total phenol and flavonoid content. Compared to the existing efficacy, DPPH radical elimination showed less than 30% activity change in ECOTRIA and PCR-PP pellets, and the largest decrease in activity of 46.06% was confirmed in Grico pellets. As a result of measuring ABTS+ radical erasure ability, less than 5% of efficacy change was confirmed in all pellets. As a result of measuring SOD-like activity, all showed a decrease in activity of more than 30%, and as a result of measuring the total phenol and flavonoid content, all pellets showed a tendency to decrease compared to the existing content. Through this results, it was confirmed that the physiological activity of M. pruriens extract decreased and changed by recycled plastic pellets, and based on the results of this study, recycled plastic pellets are believed to affect the existing efficacy and activity stability of M. pruriens extract. 본 연구에서는 재활용 플라스틱 펠렛과 벨벳콩(Mucuna pruriens) 추출물의 항산화 효능 안정도에 대한상관관계를 검증하였다. 재활용 플라스틱 펠렛을 벨벳콩 추출물에 침지 시킨 다음 다양한 온도 조건에서 30 일간 보관한 후 DPPH radical 및 ABTS+ radical 소거능, SOD 유사 활성, 총 페놀 및 플라보노이드 함량 분석을실시하였다. 기존 효능에 대비하여 DPPH radical 소거능은 ECOTRIA, PCR-PP 펠렛에서 30% 미만의 활성변화를 나타내었으며, Grico 펠렛에서 46.06%의 가장 큰 활성 감소가 확인되었다. ABTS+ radical 소거능 측정결과, 모든 펠렛에서 5% 미만의 효능 변화가 확인되었다. SOD 유사 활성을 측정한 결과, 모두 30% 이상의활성 감소를 나타내었으며, 총 페놀 및 플라보노이드 함량 측정 결과, 모든 펠렛에서 기존 함량 대비 감소하는경향을 나타내었다. 이를 통해 재활용 플라스틱 펠렛에 의한 벨벳콩 추출물의 생리활성 감소 및 변화를 확인하였으며, 본 연구 결과를 토대로 재활용 플라스틱 펠렛은 벨벳콩 추출물이 지닌 기존 효능 및 활성의 안정도에영향을 미치는 것으로 판단된다.

환율과 주택시장: 한국의 경험

한동근 국토연구원 2007 국토연구 Vol.54 No.-

본 연구는 환율변동이 주택시장에 어떤 영향을 미치는가를 밝히기 위해 전통적인 교역재/비교역재 모형을 이용한다. 한국의 경우 과거의 자료를 보면, 원화강세(환율하락) 시기에는 주택가격이 상승하고 주택부문에 대한 투자가 증가하는 현상이 관찰되었다. 이와 같은 규칙성이 우연한 것인가, 아니면 체계적인 것인가? 본 연구는 환율과 주택시장이 체계적인 관련성을 가지고 있다는 주장을 펼치며, 구체적으로 환율변화와 주택시장이 어떻게 연결되어 있는가를 밝힌다. 이론적 틀로서 본 연구는 환율변화에 따른 주택의 상대가격 변화효과와 부의 효과(wealth effect)가 발생한다는 가설을 제시한다. 실증분석을 통해 상대가격 변화효과와 부의 효과를 확인하였는데, 원화가 강세를 보일 때는 주택과 같은 비교역재에 대한 수요(부의 효과)와 투자(상대가격 효과)가 모두 증가한다는 것이 발견되었다. 나아가 각 효과가 발생하는 시차 때문에 원화강세 시기에는 단기적으로 주택가격이 상승하는 현상이 발생한다는 것을 밝힌다.