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.

Implementation of the MARSSIM to Evaluate the Final Status After Decommissioning Uranium Conversion Plant

Sang Bum Hong,Doo Seoung Hwang,Ki Won Lee,Jei Kwon Moon 대한방사선방어학회 2011 대한방사선방어학회 학술발표회 논문요약집 Vol.2011 No.11

Study of Cloning and Protein Expression of Novel Cholesterol esterase Gene

Sang Chul KIM,Seung Bum KIM,So Hyun KIM,Eun Soo HONG,Yeon Woo RYU 한국생물공학회 2010 한국생물공학회 학술대회 Vol.2010 No.4

Migration and diffusion of Metcalfa pruinosa on sweet persimmon field

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

미국선녀벌레[Metcalfa pruinosa (Say, 1830)]는 북미 원산 해충으로 2009년 3개 시군에서 공식적으로 확인된 후, 2016년 60개 시군으로 급격히 분포지역이 확대된 침입 해충이다. 기주식물의 범위가 매우 넓고, 산림지역 방제의 어려움 등으로 발생밀도가 급격하게 증가하여 농작물 재배지에서 큰 피해를 주고 있다. 단감 포장내 30개 지점에 끈끈이트랩을 설치하여 시기별 발생 밀도와 포장주위에 약 15~20m 간격으로 끈끈이트랩을 설치하여 침입 및 이동을 조사하였다. 단감포장내에서 5월 중순부터 미국선녀벌레 약충이 발생하였고, 7월부터 성충이 발생하였으며 성충의 발생 최성기는 8월 중순이었다. 포장으로의 침입은 5월 하순에 가장 높았고, 8월 중순이후로는 포장에서 외부로 성충의 이동을 관찰할 수 있다.

A SIXTH-ORDER OPTIMAL COLLOCATION METHOD FOR ELLIPTIC PROBLEMS

Hong, Bum-Il,Ha, Sung-Nam,Hahm, Nahm-Woo 한국전산응용수학회 1999 Journal of applied mathematics & informatics Vol.6 No.2

In this paper we present a collocation method based on biquintic splines for a fourth order elliptic problems. To have a better accuracy we formulate the standard collocation method by an appro-priate perturbation on the original differential equations that leads to an optimal approximating scheme. As a result computational results confirm that this method is optimal.

Impacts of whey protein on starch digestion in rumen and small intestine of steers

( Sang-bum Lee ),( Kyoung-won Lee ),( Jae-sung Lee ),( Kyung-hoon Kim ),( Hong-gu Lee ) 한국축산학회(구 한국동물자원과학회) 2019 한국축산학회지 Vol.61 No.2

Four Korean native steers (511 ± 17.2 kg; 2 × 2 replicated crossover design) fitted with duodenal cannulas were used to investigate the influence of oral administration of soluble whey protein (WP; 82.29% crude protein) on ruminal fermentation, gastrointestinal (GI) hormone secretion in the blood, pancreatic α-amylase activity in the duodenum, and disappearance rate in each segment of the GI tract. Steers were orally fed the basal diet (control; TMR [total mixed ration] 9 kg/d) or the basal diet with enriched WP (400 g/d) for 14 days. The apparent crude protein disappearance rate in the rumen of the WP was higher than in control (p < 0.05). However, no difference between groups was observed in the apparent crude protein disappearance rate in the intestine and the apparent starch disappearance rates in the rumen, GI tract. The level of cholecystokinin, secretin, and ghrelin in serum and pancreatic α-amylase activity in the duodenum of the WP also did not change. The changes in the level of blood urea nitrogen related to protein metabolism were higher in the WP than in the control (p < 0.05). However, the levels of total protein, lipid, carbohydrate and mineral metabolites did not change. Consequently, we suggest that the oral administration of WP in steers assisted in ruminal fermentation due to the population increase of microbes in the rumen but did not improve the starch digestion rate in the small intestine because GI hormone secretion in the blood and pancreatic α-amylase activity did not change.

0.7 inch FED Panel system build - up by using proper sealing process

Sang Jik Kwon,Kun Jo Hong,Tae Hee Cho,Jong Duk Lee,Chang Woo Oh,Yong Bum Kwon 한국진공학회(ASCT) 1999 Journal of Korean Vacuum Science & Technology Vol.3 No.1

FED panel was successfully fabricated through the integration of a 0.7″ diagonal Si-based Mo-tip FEA with 25×25 pixels, Y₂O₃:Eu or ZnO:Zn phosphor screen, and vacuum sealing through an exhausting glass tube, including a getter. The panel system was driven by an external driver circuit having pulse width modulation(PWM) driving scheme. Before character imaging, it was stabilized through tip aging by slowly increasing a pulse-mode emission current and phosphor aging by a coulombic charging process. After aging, luminescent characteristics such as emission uniformity, charging and arcing phenomena were shown to be improved significantly.

Pericardial Versus Porcine Valves for Surgical Aortic Valve Replacement

Hong Ju Shin,Wan Kee Kim,Jin Kyoung Kim,Joon Bum Kim,Sung-Ho Jung,Suk Jung Choo,Cheol Hyun Chung,Jae Won Lee 대한심장학회 2022 Korean Circulation Journal Vol.52 No.2

Background and Objectives: There still are controversies on which type between bovine pericardial and porcine valves is superior in the setting of aortic valve replacement (AVR). This study aims to compare clinical outcomes of AVR using between pericardial or porcine valves. Methods: The study involved consecutive 636 patients underwent isolated AVR using stented bioprosthetic valves between January 2000 and May 2016. Of these, pericardial and porcine valves were implanted in 410 (pericardial group) and 226 patients (porcine group), respectively. Clinical outcomes including survival, structural valve deterioration (SVD) and trans-valvular pressure gradient were compared between the groups. To adjust for potential selection bias, inverse probability treatment weighting (IPTW) was conducted. Results: The mean follow-up duration was 60.1±50.2 months. There were no significant differences in the rates of early mortality (3.1% vs. 3.1%; p=0.81) and SVD (0.3%/patient-year [PY] vs. 0.5%/PY; p=0.33) between groups. After adjustment using IPTW, however, landmark mortality analyses showed a significantly lower late (>8 years) mortality risk in pericardial group over porcine group (hazard ratio [HR], 0.61; 95% confidence interval, [CI] 0.41–0.90; p=0.01) while the risks of SVD were not significantly difference between groups (HR, 0.45; 95% CI, 0.12–1.70; p=0.24). Mean pressure gradient across prosthetic AV was lower in the Pericardial group than the Porcine group at both immediate postoperative point and latest follow-up (p values <0.001). Conclusions: In patients undergoing bioprosthetic surgical AVR, bovine pericardial valves showed superior results in terms of postoperative hemodynamic profiles and late survival rates over porcine valves.

Experiments on Thermal Stratification in Inlet Nozzle of Steam Generator

Sang-Nyung Kim,Cheol-Hong Kim,Bum-Su Youn,Hag-Ki Yum 대한기계학회 2007 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.21 No.4

Nuclear power plant components suffer pipe shedding, cracking, thermal fatigue, bending and supporting bracket breakage during their life span. Notably, the horizontal inlet nozzle of steam generator is prone to thermal stratification frequently due to its operational characteristics. As a result, PWRs in many countries including the U.S.A. suffered a lot of pipe cracks and leakages around the late 1970s, as the thermal stress inflicted by thermal stratification formed in the horizontal inlet nozzle of steam generator during transition (auxiliary feedwater injection) was not reflected on power plant design. Therefore, we classified the nuclear power plants in Korea into KSNP and Westinghouse-type(W) power plants (Kori # 1,2,3,4, Yeonggwang # 1,2 and Uljin # 1,2) and conducted an experiment on thermal stratification and thermal cycling in relation to the volume of auxiliary feedwater injected into the horizontal inlet nozzle of steam generator and hot water flowing back from steam generator. As a result, it was found out that KSNP was hardly prone to thermal stratification while thermal stratification occurred in the horizontal inlet nozzle of steam generator in Westinghousetype(W) power plants, necessitating a solution to address such a phenomenon.

Dual isotope ratio normalization of nitrous oxide by bacterial denitrification of USGS reference materials

Hong, Sang-bum,Park, Ha Ju 극지연구소 2021 극지연구소 초록집 Vol.- No.-