기술금융기관의 효율성 분석사례

한상대(Sang-Dae Han),홍재범(Jae-Bum Hong) 한국인터넷전자상거래학회 2016 인터넷전자상거래연구 Vol.16 No.4

This case was to assess the efficiency of 26 technology appraisal centers(TAC) of Korea Technology Finance Corporation(KOTEC) and improve the efficiency. The research is based on the analysis of data collected from 2011 to 2013 with Data Envelopment Analysis(DEA). As the number of employees and business administrative expenses were used as input variables, leveraging the number of technology appraisal cases, the amount of technology credit guarantee provision and the amount of debt collection through exercising indemnity rights as well as revenues accruing from the technology appraisals were used as output variables. The purpose of those variables are aimed at representing the differentiated features of KOTEC from other conventional credit guarantee institutions. The analysis result showed that the efficiencies of TACs were high overall and improving in the way that their efficiency values show mostly over 0.9 on average. CCR model showed that the number of effective DMUs –represented as Technology Efficiency(TE) Value was 1 – was 7 in 2011 and 13 in 2013 while BCC model showed that the number of DMUs, whose values of Pure Technology Efficiency(PTE) was 1, was 15 in 2011 and 17 in 2013 respectively. The number of DMUs, whose value of Scale Efficiency(SE) is 1, had also been increased from 7 in 2011 to 13 in 2013. The number of DMUs was to show the status of “Constant Returns to Scale(CRS)” increased from 7 in 2011 to 13 in 2013. The number of DMUs was to show the status of “Increasing Returns to Scale(IRS)” was 16 in 2011 and 11 in 2013. The number on “Decreasing Returns to Scale(DRS)” had decreased from 3 in 2011 to 2 in 2013 respectively. Therefore, the number of efficient DMUs whose input was proportional to output –signaling the optimal efficient status- increased by 6. The number of DMUs which still had inefficiency and needed to step up the input had been decreased by 4 while the number of DMU which need to be scaled back the input is decreased by 1. Overall, efficiency of TACs has been increased. The result implies there are many DMUs which could increase the size efficiency, not through removing the inefficiencies by decreasing the input, but through scaling up the total size of output, leveraged by the consolidation of the internal analogous operation in order to make a synergy effect as well as the reduction of outsourcing tasks which have been related with claim collection process and hiring external technology appraisal experts. The benchmarked DMUs which could be the reference group were An-san, Sa-Sang and Sung-Nam TACs. They were located near to the industry complexes. So, their geographical conditions were well positioned to access to the technology-innovative corporations and venture startups, solidifying the fundamental to provide supply in accordance with the increasing demand of technology finance. The value of this study was that it analyses the efficiency of KOTEC takes the key role of technology financing based on technology appraisal. This research was distinctive in that it defined the input and output variables to measure the efficiency of credit guarantee institutions while earlier studies, most of which researched credit-evaluation based guarantee institutions, did not deal with those variables. It has implications which could be applied to evaluate the efficiency of public technology appraisal institution in the future.

Rice planthopper and spider investigation on rice field using yellow sticky trap

Sang-Ku Lee,In-Hong Jeong,Se-Keun Park,Sung-Wook Jeon,Sang-Bum Lee,Sang-Guei Lee,Bueyong Park 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10

이동성 해충인 벼 멸구류를 조사하기 위해 우리나라를 포함한 아시아지역 12개국 13기관에서 농촌진흥청 아시아식량작물협력협의체(AFACI) 프로그램의 일환으로 “아시아지역 이동성 병해충 국제협력 네트워크 구축”프로젝트를 수행하고 있다. 본 연구에서는 벼 멸구류 및 거미류 의 포장 발생 실태를 파악하기 위해 2016년부터 2018년까지 경남 밀양, 전남 신안, 전북 완주지역의 무농약 논포장에서 6월말부터 9월말까지 점착트랩을 이용한 타락법으로 멸구류 발생 상황을 조사하였다. 2018년도에 애멸구는 7월 중순 이후에 밀도가 높아졌고, 흰등멸구는 신안지역에서 8월 이후에 밀도가 증가하기 시작하였다. 벼멸구는 모두 지역에서 발견되지 않았다. 거미류는 모든 지역에서 후반기로 갈수록 개체수가 증가하고, 9월 초순에 가장 많이 발생하였다.

Effects of Dexamethasone and DHEA on the Changes of Glutamate and Polyamine Uptake in Rat Astrocytes by Lipopolysaccharide and Antimycin A

Sang-Hyun Choi,Bum Lee,Kyung-Ho Shin,Bon-Hong Min,Yeon-Sook Chun,Boe- Gwun Chun 대한생리학회-대한약리학회 1999 The Korean Journal of Physiology & Pharmacology Vol.3 No.2

<P> Interactions among dexamethasone, dehydroepiandrosterone (DHEA), lipopolysaccharide (LPS), and antimycin A on the glutamate uptake and the polyamine uptake were investigated in primary cultures of rat cerebral cortical astrocytes to examine the effects of dexamethasone and DHEA on the regulatory role of astrocytes in conditions of increased extracellular concentrations of glutamate or polyamines. 1. [<SUP>3</SUP>H]Glutamate uptake: LPS and antimycin A decreased <I>V</I><SUB>max</SUB>, but both drugs had little effect on <I>K</I><SUB>m</SUB>. Dexamethasone also decreased basal <I>V</I><SUB>max</SUB> without any significant effect on <I>K</I><SUB>m</SUB>. And dexamethasone further decreased the antimycin A-induced decrease of <I>V</I><SUB>max</SUB>. DHEA did not affect the kinetics of basal glutamate uptake and the change by LPS or antimycin A. 2. [<SUP>14</SUP>C]Putrescine uptake: LPS increased <I>V</I><SUB>max</SUB>, and antimycin A decreased <I>V</I><SUB>max</SUB>. They showed little effect on <I>K</I><SUB>m</SUB>. Dexamethasone decreased <I>V</I><SUB>max</SUB> of basal uptake and further decreased the antimycin A-induced decrease of <I>V</I><SUB>max</SUB>, and also decreased <I>V</I><SUB>max</SUB> to less than control in LPS-treated astrocytes. DHEA did not affect <I>K</I><SUB>m</SUB> and the change of <I>V</I><SUB>max</SUB> by LPS or antimycin A. 3. [<SUP>14</SUP>C]Spermine uptake: Antimycin A decreased <I>V</I><SUB>max</SUB>, and LPS might increase <I>V</I><SUB>max</SUB>. <I>K</I><SUB>m</SUB> was little affected by the drugs. Dexamethasone decreased basal <I>V</I><SUB>max</SUB> and might further decrease the antimycin A-induced decrease of <I>V</I><SUB>max</SUB>. And dexamethasone also decreased <I>V</I><SUB>max</SUB> to less than control in LPS-treated astrocytes. DHEA might increase basal <I>V</I><SUB>max</SUB> and <I>V</I><SUB>max</SUB> of LPS-treated astrocytes. 4. <I>V</I><SUB>max</SUB> of glutamate uptake by astrocytes was increased by putrescine (1000 μM & 2000 μM) and spermidine (200 μM, 500 μM & 2000 μM). Spermine, 200 μM (and 100 μM), also increased <I>V</I><SUB>max</SUB>, but a higher dose of 2000 μM decreased <I>V</I><SUB>max</SUB>. <I>K</I><SUB>m</SUB> of glutamate uptake was not significantly changed by these polyamines, except that higher doses of spermine showed tendency to decrease <I>K</I><SUB>m</SUB> of glutamate uptake. In astrocytes, dexamethasone inhibited the glutamate uptake and the polyamine uptake in normal or hypoxic conditions, and the polyamine uptake might be stimulated by LPS and DHEA. Polyamines could aid astrocytes to uptake glutamate.

WASTE MANAGEMENT IN DECOMMISSIONING PROJECTS AT KAERI

Hong, Sang-Bum,Park, Jin-Ho 제주대학교 방사능이용연구소 2005 방사선응용과학연구소논문집 Vol.19 No.-

Case Report : Occlusion of the right subclavian artery after insertion of a transesophageal echocardiography probe in an adult with a vascular ring -A case report-

( Sung Yong Park ),( Dae Hee Kim ),( Han Bum Joe ),( Sun Kyung Park ),( Ji Hoon Hwang ),( Yong Woo Hong ) 대한마취과학회 2010 Korean Journal of Anesthesiology Vol.59 No.4

Intraoperative transesophageal echocardiography (TEE) has become an important monitoring device for patients undergoing cardiac or noncardiac surgery. Complications associated with TEE are unusual, but the potential for TEE probe compression of the posterior vascular structures has been reported in pediatric patients. We present here a case of occlusion of the right subclavian artery in an adult patient with a vascular ring after insertion of a TEE probe. (Korean J Anesthesiol 2010; 59: 283-285)

A Study on the Clearance Level(draft) for the Steel Scrap from the KRR-1 & 2 Decommissioning

Sang-Bum Hong,Bong-Jae Lee,Un-Soo Chung 한국방사성폐기물학회 2004 방사성폐기물학회지 Vol.2 No.1

연구로 1,2호기 해체과정에서 발생되는 많은 양의 철재폐기물 중 자체처분대상 철재폐기물을 대상으로 재활용하는 경우에 대해서 피폭방사선량을 평가하고, 규제해제농도기준(안)을 도출하였다. 평가도구는 RESRAD-RECYCLE ver 3.06을 이용하여 ICRP60에서 제시하고 있는 유효선량 개념에 근거한 내부피폭 선량환산인자를 수정하였고, IAEA Safety Series 111-P-1.1 및 NUREG-1640을 적용하여 예상되는 최대개인선량 및 집단선량을 평가하였다. 0.4 Bq/g의 철재폐기물에 대한 RESRAD-RECYCLE 전산코드의 평가결과 개인최대선량 및 집단선량은 23.9 Sv/y, 0.11 manSv/y이다. 최종적인 핵종별 규제해제농도기준은 일반평가방법과 세부평가결과를 종합하여 가장 보수적인 평가결과를 추출하여 결정하였다. 그 결과 , C 핵종에 대한 규제해제농도준위는 1.14 Bq/g미만이 되어야 국내 원자력법에서 정하고 있는 처분제한치(최대개인선량 : 10 Sv/y, 집단선량 : 1 manSv/y)를 만족할 수 있다. The exposure dose form recycling of a large amount of the steel scrap from the KRR-1&2 decommissioning activities was evaluated, and also the clearance level(draft) was derived. The maximum individual dose and collective dose were evaluated by modifying internal dose conversion factor which was based on the concept of effective dose in ICRP 60, applied to the RESRAD-RECYCLE ver 3.06 computing code, IAEA Safety Series 111-P-1.1 and NUREG-1640 as the assessment tool. The result of assessment for individual dose and collective dose is 23.9 Sv per year and 0.11 manSv per year respectively. The clearance levels were ultimately determined by extracting the most conservative value form the results of the generic assessment and specific assessment methodologies. The result of clearance level for radionuclides( , C ) is less than 1.1410 Bq/g to comply with the clearance criterion(maximum individual dose : 10 Sv per year, collective dose : 1 manSv per year) provided for Korea Atomic Energy Act and relevant regulations.s.

AN ERROR OF THE METHOD OF VANISHING VISCOSITY OF THE FIRST-ORDER HAMILTON-JACOBI EQUATIONS

Hong, Bum Il,Ha, Sung Nam,Choi, Jeongwhan 대한수학회 1997 대한수학회보 Vol.34 No.1

Evaluation of Combined Renewable Energy Systems as Energy Efficient and Environmentally Friendly Sources in Pig Farm

Hong-Seok Mun,Muhammad Ammar Dilawar,Shad Mahfuz,Young-Hwa Kim,Il-Byung Chung,Keiven Mark Ampode,Veasna Chem,Sang-Bum Ryu,Jong-Pil Moon,Chul-Ju Yang 한국신재생에너지학회 2022 AFORE Vol.2022 No.9

Verification Method for the in Situ Measurement for Decommissioning Characterization

Sang Bum Hong,Byung Chae Lee,Jun Ha Kim,Young Yong Ji,In Hye Hahm,Bum Kyoung Seo 한국방사성폐기물학회 2019 한국방사성폐기물학회 학술논문요약집 Vol.2019 No.05

A study on the error bounds of trapezoidal \&Simpson's quadratures

Sung Hee Choi,,Suk Hyung Hwang,Bum Il Hong 한국전산응용수학회 2005 Journal of applied mathematics & informatics Vol.17 No.1-2

In this paper, we discuss the average case errors of some numerical quadratures, namely Trapezoidal and Simpson’s, in the numerical integration problem. Our integrands are r-fold Wiener functions from the interval [0,1] and only at finite number of points the function values are evaluated. We study average case errors of these quadratures theoretically and then compare it with our practical (a posteriori) researches. Monte- Carlo simulation is used to perform these empirical researches. Finally we empirically compute the error bounds of studied quadratures for the higher degrees of Wiener functions.