베트남 하이퐁항의 투자방안

하명신,장병기,배상욱 한국물류학회 2005 물류학회지 Vol.15 No.1

베트남은 동남아시아 국가들중 가장 경제성장가능성이 높은 국가 중의 하나이다. 본 연구는 베트남의 항만들중 하이퐁항을 선택하여 재무분석 및 그에 근거한 진출전략을 제시하고자 하였다. 재무분석의 결과 기본조건하에서는 재무적 타당성이 있는 것으로 식별되었으며, 민감도 분석에서도 투자타당성은 유지되는 것으로 나타났다. 즉, 건설비의 20% 증가시 처리실적이 30%이상 감소하지 않거나, 건설비의 40%증가시 처리실적이 20%이상 감소하지 않고, 심지어 건설비의 60%증가시 처리실적이 10%이상 감소하지 않는다면 여전히 투자타당성은 유지되는 것으로 식별되었다. 그러나 베트남은 사회주의 국가들 중의 하나이므로 하이퐁항의 투자시 전략적 접근이 필요한 상황이다. 주요사항은 베트남 정부와의 장기적 우호관계 유지, 유력한 현지 파트너의 선정, 철저한 계약관계 형성, 이종문화에 대한 이해 등을 들 수 있다. Vietnam is one of the most economically promising countries in Southeast Asia. This study aims at suggesting the entry strategies for the Vietnamese port development on the basis of the financial analysis. For the purpose of the study, first, the Vietnamese port industry is briefly introduced and the best port to invest is revealed. Second, the financial analysis is conducted on Hai Phong, selected as the best port for investment. Positive results are found in the basic conditions for the port development. Its results also indicate that the financial validity will be maintained when the construction cost increases up to 60 percent and that the financial validity will still be maintained when the construction cost increases up to 100 percent provided that containerised cargoes increase by about 20 percent. This study also suggests strategies for future development and significant issues for investors. It is supposed that the actual investment in the Hai Phong port development will be fairly acceptable in terms of the rapidly developing Vietnamese economy and the significantly increasing economic exchange between Korea and Vietnam.

Application of recurrent neural network for inflow prediction into multi-purpose dam basin

Park Myung Ky,Yoon Yung Suk,Lee Hyun Ho,Kim Ju Hwan 한국수자원학회 2018 한국수자원학회논문집 Vol.51 No.12

본 연구에서는 순환신경망을 이용한 댐 유입량 예측모형의 적용성 검토를 목적으로 하고 있으며, 이를 위해 소양강댐 유역 및 충주댐 유역을 대상 으로 그간 댐 운영을 통해 축적된 기상 및 수문 빅데이터를 활용하여 인공신경망 모형과 엘만 순환신경망 모형을 구축하였다. 모형의 학습과 예측 을 위하여 유역별 유입량, 강우량, 기온, 일조시간, 풍속자료가 입력자료로 사용되었고 10일간 일별 댐유입량 자료가 모델의 출력자료로 구조화 하여 학습을 진행한 후 검증을 목적으로 2016년 7월 ~ 2018년 6월까지 2개년에 대한 댐 유입량 예측을 수행하였다. 학습된 모형의 유입량 예측 결과를 비교분석한 결과, 소양강댐 유역에서는 인공신경망 모형과 순환신경망 모형 간 예측성능은 큰 차이를 보이지 않았으며, 충주댐 유역에서는 순환신경망 모형의 예측 결과가 인공신경망 모형에 비해 비교적 우수한 성능을 보임에 따라 엘만 순환신경망을 이용하여 댐 유입량 예측모형을 구축 할 경우 예측성능은 기존의 인공신경망 모형과 비슷하거나 다소 우수할 것으로 판단된다. 또한 엘만 순환신경망은 갈수기 댐 유입량 예측에 있어서 인공신경망에 비해 예측결과의 재현성이 우수한 것으로 나타났으며, 엘만 순환신경망 학습에 있어 다중 은닉층 구조가 단일 은닉층 구조보다 예측 성능 향상에 효과적인 것으로 분석되었다. This paper aims to evaluate the applicability of dam inflow prediction model using recurrent neural network theory. To achieve this goal, the Artificial Neural Network (ANN) model and the Elman Recurrent Neural Network(RNN) model were applied to hydro-meteorological data sets for the Soyanggang dam and the Chungju dam basin during dam operation period. For the model training, inflow, rainfall, temperature, sunshine duration, wind speed were used as input data and daily inflow of dam for 10 days were used for output data. The verification was carried out through dam inflow prediction between July, 2016 and June, 2018. The results showed that there was no significant difference in prediction performance between ANN model and the Elman RNN model in the Soyanggang dam basin but the prediction results of the Elman RNN model are comparatively superior to those of the ANN model in the Chungju dam basin. Consequently, the Elman RNN prediction performance is expected to be similar to or better than the ANN model. The prediction performance of Elman RNN was notable during the low dam inflow period. The performance of the multiple hidden layer structure of Elman RNN looks more effective in prediction than that of a single hidden layer structure.

이수관리를 위한 직렬 저수지 시스템 모의운영 모형(KORSIM) 개발

박명기(Park Myung Ky),김정엽(Kim Jeong Yup),고익환(Ko Ick Hwan),박상근(Park Sang Geun),이현노(Lee Hyeon Lo) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

IORT in Gastric Cancer

Myung Se Kim(김명세) , Cheol Hoon Kang(강철훈) , Sung Kyu Kim(김성규) , Sun Kyo Song(송선교) , Koing Bo Kwan(권굉보) ,Heung Dae Kim(김홍대) 대한방사선종양학회 1991 Radiation Oncology Journal Vol.9 No.1

영남대학병원에서는 1988년 6월 15일부터 1990년 9월 15일까지 절제가능한 국소 진행된 위암 환자중 원격 전이를 확인할 수 없었던 환자 총 28명을 prospective randomized protocol에 의한 치료를 계획하였다. 28명중, 개복후 절제가 불가능했던 환자 3명과 stage la로 판명된 환자 1명을 제외한 24명에서 외과적 근치절제수술후 1500 cGy를 9MeV의 전자선을 이용하여 1회에 조사하였다. 외부 방사선 치료는 수술후 4주 이내에 시작하여 하루 180 cGy 주 5회 치료법으로 4300~4500 cGy를 조사하였다. 항암요법은 protocol에 의하여 5-FU, Mitomycin-C, Adriamycin, Uraful을 여러 가지 조합으로 투여하였다. 3개월에서 31개월 간의 추적기간 중에 방사선 조사와 관계되는 심한 부작용은 보고되지 않았다. 짧은 추적 기간이므로 생존율을 산출할 수 없겠으나 수술중 방사선치료, 외부방사선치료와 여러 가지 항암제를 병합 투여하였음에도 불구하고 심한 부작용이 발견되지 않았을 뿐 아니라 현재까지 국소재발이 한 예에서도 발견되지 않았음으로 수술중 방사선 치료의 국소 재발 억제 및 방지의 효과가 확실시되며 계속되는 추적검사에서도 좋은 생존율이 기대된다. Total 28 patients with resectable, locally advanced gastric cancer were entered in our prospective randomized study from June 15, 1988 to Sep, 15, 1990 in Yeungnam University Hospital. This study consisted of curative resection, IORT, external irradiation and combination of chamotherapy. Twenty-four of 28 patients were treated with single dose of 1500 cGy with 9 MeV election intraoperatively. External irradiation of 4300~4500 cGy with 180 cGy per fraction, 5 days per week was started within 4th weeks of postoperative days. Various chemotherapy with or without external irradiation were added for reducing hematogenous and/or peritoneal dissemina-tion and determination of complication of each arm. Duration of follow up was 4~31 months. No serious complication related with radiation were reported compare to resection and chemother-apy only group. Although out follow up period is too short to draw any conclusion, IORT appears to improve local control, hopely further survival. Continuous follow up should be needed for evaluation of real therapeutic gain such as complication vs. improved survival.

Cybex 6000을 이용한 슬관절병 환자의 운동프로그램에 관한 사례연구

김명화,김철준,김상겸,김기형,유경석 고려대학교 스포츠과학연구소 1992 스포츠科學論叢 Vol.2 No.1

Isokinetic exercise programs using Cybex have been developed for clinical and fitness purposes. It has been appreciated as a distinctive exercise method from isotonic and isometric methods. Until now, among isokinetic exercises using Cybex machine, there have been no studies which operated loading speed and repetitions at the same time. In this study, an exercise protocol using Cybex 6000, recently issued, was proposed and implemented to a patella tendinitis patient who had problems during normal walking due to the inadequate muscle strength between right and left legs. After 5 weeks exercise, the results as follow: 1. Considerable increases in strength for all three exercise modes (60。 /sec, 180。 /sec, and 300。 /sec) were achieved. 2. It was found to be more favorable that the higher and lower speed exercise should be done, simultaneously, rather than, separately. 3. During exercise, the increase in involved leg strength for 60。 /sec mode was remarkable. However, the increase for 300。 /sec mode was slightly diminished after two weeks. This phenomena could not be explained well at this moment. 4. The extension of the study examine more cases, and that may produce more general test results.

혈액투석중인 만성신부전 환자에서 혈압조절의 양상과 투석적절도가 혈압에 미치는 영향

김명빈(Myung Bin Kim),박규용(Ky Yong Park),김근호(Guen Ho Kim),전노원(Rho Won Chun),김형직(Hyung Jik Kim),채동완(Dong Wan Chae),노정우(Jung Woo Noh),구자룡(Ja Ryong Koo) 대한내과학회 1999 대한내과학회지 Vol.56 No.5

N/A Objective : Volume expansion has been known to be the major factor in the development of hypertenision in chronic hemodialysis(HD) patients. But some HD patients remain hypertensive even with adequate volume control, which suggests the role of undefined uremic toxin in the pathogenesis of hypertension. So we aimed to evaluate the status of blood pressure (BP) control and the effect of Kt/V (as a marker for removal of uremic toxin) on BP in chronic HD patients. Methods : The status of BP control was obtained from records of 8 HD session in 132 patients in November 1996 and 127 patients in November 1997. Of 132 patients studied in 1996, 70 patients underwent a follow-up evaluation in 1997. All patients were dialyzed 3 times a week, 4 hours a session. Postdialytic cyclic 3',5' guanosine monophosphate (cGMP) level was measured in 48 patients as a marker of volume status. Results : The prevalence of postdialytic hypertension (>140/90mmHg) was 73.5 in 1996 and 65.3% in 1997. Normotensive patients (postdialytic mean BP <114 mmHg) had higher Kt/V value than hypertensive patients in both 1996 and 1997. But there was no difference in the degree of ultrafiltration (UF) and cGMP level between two groups. Postdialytic mean BP was inversely correlated with Kt/V level but had no relationship with degree of UF and cGMP level in both 1996 and 1997. The group in which postdialytic mean BP had been decreased during 1 year study period had higher degree of elevation in Kt/V than the group in which postdialytic mean BP had been increased. The changes of postdialytic weight and degree of UF during study period were similar between two groups. The number of antihypertensives used were also inversely correlated with Kt/V but not correlated with degree of UF and cGMP level in both 1996 and 1997. Conclusion : Our study indicate that increasing HD adequacy is associated with improved control of postdialytic mean BP and less use of antihypertensive drugs. UF and antihypertensive drugs may not be adequate form of hypertension treatment as once thought and increasing HD adequacy can be an alternative method.

하이퍼텍스트 관리를 위한 확장된 NF² 모델에 관한 연구

강명주(Myung_Ju Kang),강일선(Il_Sun Kang),이강재(Kang_Jai Lee),엄기현(Ky_Hyun Um) 한국정보과학회 1989 한국정보과학회 학술발표논문집 Vol.16 No.2

전형적인 데이타베이스에서는 정형화된 데이타만을 다루고 있으나 현실세계에서는 영상, 텍스트, 음성, 그래픽스 데이타등 비정형화된 데이타 형태도 존재한다. 하이퍼텍스트는 여러가지 사용자 인터페이스를 이용하여 비정형화된 데이타 관리를 요구한다. 하이퍼텍스트를 현재의 관계 데이타 모델을 이용하여 표현하기에는 많은 제약조건과 불편한 점이 따른다. 따라서, 본 논문은 하이퍼텍스트 관리를 원활하게 할 수 있는 확장된 NF² 모델을 제안한다. 이를 위해 비정형화된 여러가지 데이타 형의 확장된 필요한 연산을 소개하며, 논리적 구조의 표현과 관리 방법 등을 다룬다.

LPG 저장시설에 대한 위험성 평가에 관한 연구

박명섭(Myung-Seop Park),서재민(Jae-Min Seo),이정우(Jung-Woo Lee),김기수(Ky-Soo Kim),김성빈(Sung-Bin Kim),고재욱(Jae-Wook Ko),신동일(Dong-Il Shin) 한국가스학회 2000 한국가스학회지 Vol.3 No.3

중국 단동항의 항만개발투자전략

하명신(Myung-Shin Ha),장병기(Byoung-Ky Chang),최순권(Soon-Kwon Choi) 한국무역학회 2004 한국무역학회 국제학술대회 Vol.2004 No.4

This study aims to suggest the entry strategy for Dandong port development on the basis of financial analysis. The analysis presents that there are no positive results on basic conditions in the port developments but somewhat good results for the reductions of tax and of more than 34% of construction costs. It is expected that considering a rapidly increasing economy in China and a significant economic exchange between Korea and China in the foreseeable future, the entry for the Dandong port development will be made by stages.

중국 단동항의 항만개발투자전략

하명신(Myung-Shin Ha),장병기(Byoung-Ky Chang),최순권(Soon-Kwon Choi) 한국무역학회 2004 國際學術大會 論文集 Vol.2004 No.4

This study aims to suggest the entry strategy for Dandong port development on the basis of financial analysis. The analysis presents that there are no positive results on basic conditions in the port developments but somewhat good results for the reductions of tax and of more than 34% of construction costs. It is expected that considering a rapidly increasing economy in China and a significant economic exchange between Korea and China in the foreseeable future, the entry for the Dandong port development will be made by stages.