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부동산 소유권 NFT 와 분할 판매 및 거래 시스템 설계
김영근 ( Young-gun Kim ),김성환 ( Seong-whan Kim ),( Hyo Jung Song ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.2
대체 불가능 토큰 (NFT, non-fungible token)은 고유하고 더 이상 분할할 수 없는 특성을 가지고 있다. NFT 는 디지털 콘텐츠에 대한 소유권을 증명해 주지만 현재 1) 소유권 증명 이상의 유틸리티가 명확하지 않고, 2) 토큰이지만 유동성이 거의 없으며, 3) 가격이 예측 불가능하다. 특히, 부동산의 경우 가격이 매우 높은 특징으로 인하여 투자 진입장벽이 매우 높다. NFT 분할을 하면 유동성의 증가, 그리고 접근성 증가에 따른 커뮤니티 볼륨의 증가를 기대해 볼 수 있다. 이러한 특성을 활용하여 기존에 투자하기 어려웠던 부동산을 다양한 기술을 활용하여 쉽게 투자를 할 수 있게 된다. 또한, Black Litterman 모델을 활용하여 보다 여러 종류의 NFT 들에 대한 최적 포트폴리오를 구성할 수 있는 알고리즘을 설계하고 구현하였다.
기관 암 수술 중 바늘 전극을 활용한 반회후두신경 모니터링 1예
김영근(Young Gun Kim),박헌수(Heon Soo Park),이동근(Dong Kun Lee) 대한신경모니터링학회 2022 Journal of Neuromonitoring & Neurophysiology Vol.2 No.2
Paralysis of the recurrent laryngeal nerve is one of the important complications that can occur after thyroidectomy. When unilateral paralysis of the recurrent laryngeal nerve occurs, the patient complains of hoarseness and aspiration. Bilateral paralysis of the recurrent laryngeal nerve may cause upper airway obstruction, which may lead to respiratory difficulties. We report a case of a case of 50-year-old man diagnosed with trachea cancer who had primary resection and end to end anastomosis surgery with recurrent laryngeal nerve monitoring using needle electrodes, along with a review of the literature.
김영근(Young-Gun Kim) 한국항만경제학회 2005 韓國港灣經濟學會誌 Vol.21 No.4
This study focuses on affording a material basis for rearranging the manpower supply system in port and logistics industry for Busan's international competitiveness strategies. First of all, the current state and future plan of port and logistics industry, as Busan's main strategic industry, are reviewed. Then theoretical background are introduced for the estimate of demand. As a methodology of this research, Cubic model is applied to estimate the demand of manpower by using 10 year time series data from 1993 to 2002. This paper also surveyed the supply side of port and logistics industry manpower in Busan area. The amounts of mismatched equilibrium between the demand and the supply are measured in this study. The concluding remarks shows some suggestions for the problem of mismatch and the relating policy planning.
한우 방목초지에서 목초 혼파조합이 식생구성과 수량에 미치는 영향
김맹중(Meng Jung Kim),조영무(Young Moo Cho),최순호(Sun Ho Choi),김영근(Young Gun Kim),윤세형(Sei Hyung Yoon),김종근(Jong Geun Kim),육완방(Wan Bang Yook) 한국초지조사료학회 2006 한국초지조사료학회지 Vol.26 No.2
This study was conducted to select the optimum seed mixture for beef cattle (Hanwoo) grazing in middle mountain area at 450m from sea level during 2 years from October 1, 1999. Seed mixtures were composed of four different treatment according to main species such as orchardgrass (T1), perennial ryegrass (T2), timothy (T3) and Italian ryegrass (T4). Grass composition rate of different seed mixtures was decreased mostly at first year of grazing, like 44.9% of orchardgrass in T1 plot, 27.6% of perennial ryegrass in T2 plot, 40.9% of timothy in T3 plot and 40.7% of Italian ryegrass in T4 plot, respectively. Main species in seed mixture were decreased in grazing pasture, but kentucky bluegrass and tall fescue were increased in all plots. Italian ryegrass in T4 plot was well grown in early growth stage and inhibited the growth of other grass species, and 44.2% of Italian ryegrass was maintained in second year in the grazing plot. Average dry matter yields of first year showed 6,673 ㎏/㏊ and second year was 10,177 ㎏/㏊. Average TDN yields of different seed mixtures were 6,399 ㎏/㏊ in T1, 7,769 ㎏/㏊ in T2, 4,883 ㎏/㏊ in T3 and 7,146 ㎏/㏊ in T4 plot. Average herbage dry matter intakes by different seed mixtures during 2 years were 5,937 ㎏/㏊ in T1, 6,375 ㎏/㏊ in T2, 4,925 ㎏/㏊ in T3 and 6,456 ㎏/㏊ in T4. This result indicated that perennial ryegrass would recommended in main species of Hanwoo grazing pasture.
잔골재 대체재로서 석탄회를 이용한 초속경 보수모르타르의 기초적 특성에 관한 연구
이건철,오동욱,김영근,조정기,Lee, Gun-Cheol,Oh, Dong-Uk,Kim, Young-Geun,Cho, Chung-Ki 한국건설순환자원학회 2011 한국건설순환자원학회지 Vol.6 No.1
본 연구에서는 산업부산물로서 재활용율이 낮은 바텀애쉬와 혼화재를 이용하는 에코개념의 터널 보수용 초속경 그라우트 모르타르 개발을 목적으로 실시공 환경조건의 온도하에서 초속경 그라우트 모르타르의 기초적 특성에 대하여 검토하였다. 실험결과, 유동성 및 응결시간은 B > C > A type 순으로 크게 나타났으며, 온도조건별로는 상온보다 저온에서 더 지연되었다. 압축강도, 휨강도, 부착강도는 3 type 모두 비슷하게 나타났는데, 압축강도는 저온조건에서는 초기에 강도가 작았지만 장기재령에서는 상온조건과 유사한 강도가 나타났고, 휨강도는 초기에는 강도가 유사했지만 장기재령에서는 상온조건이 크게 나타났으며, 부착강도는 상온조건보다 저온조건이 평균 35 % 저하되었다. 길이변화는 A > C > B 순으로 저온조건이 상온조건보다 2배로 나타났으며 고로슬래그 미분말을 취환한 경우 현저히 감소되었다. 물흡수 계수 및 습기투과 저항성은 C > A > B 순으로 크게 나타났고 바텀애쉬를 치환할 경우 다공질의 영향으로 크게 증가되었다. In this study, in order to develop ultra rapid hardening mortar(URHM) for tunnel repairs using bottom ash of low recycle ratio and Admixture as Eco concept, fundamental properties of URHM on temperature condition of construction field were performed. Test result, URHM of three types for fluidity and setting time were as in the following : B > C > A. Those for low temperatures were later than the standard condition. Compressive, bending and bond strength were similar with three types as follow. In compressive strength, initial strength of the low were smaller than the standard but the low in the long-term were similar with the standard. On the contrary to this, bending strength were similar in initial strength but the low in the long-term were smaller than the standard. The low in bond strength was average 35% less than the standard. Length changes was as in the following : A > C > B. the low is two times much as the standard but the case using blast furnace slag particles noticeably reduced length changes. Water absorption coefficient and water vapor resistance were as in the following : C > A > B. In case of URHM added bottom ash, water absorption coefficient and water vapor resistance were increased because bottom ash is porous material.