SCM/EDI : 컨테이너 터미널의 자원관리를 위한 정보시스템의 분석 및 설계에 관한 연구

김헌종(Hun Jong Kim),송재성(Jae Sung Song),서만승(Man Seung Seo) 한국정보시스템학회 2000 한국정보시스템학회 추계 학술발표논문집 Vol.2000 No.-

通貨供給과 國際收支 變動과의 實體的 硏究

최종수(Jong-Soo Choi),김헌종(Hun-Jong Kim) 한국해양대학교 해사산업연구소 1993 海事産業硏究所論文集 Vol.3 No.-

This study attempts to analyse the effect of the change on the balance of payments on the supply of monetary aggregates. with special reference to Korean experience. The Korean economy has deepened its foreign dependency in terms of foreign outstanding debts which has been increased substantially during the last two decades. This study also aims to examine the change of monetary aggrergate using the time-series data of the M1 and M2 of the money stock during the period of 1971-1992. The approach was adopted for the estimation of the effects of exogneous variables on the domestic money supply. This approach is the typical monetary approach to the balance of payments to examine effect of the central bank's foreign reserve assets. price-level. real GNP and interest rate on the supply of domestic credit. In such a case M2. monetary multiplier. real GNP and price level highly effected the change in the endogneous variable at the separately each 3.352. 12.205, 6.737 significant level. It is found that the foregin reserves held by the central bank is inversely related with the supof domestic credit. with the estimated value of the being 1.494 and interest rate value of the being 0.589. The data used was "The Central Bank's Monthly Report" for 21 years. In such a case M₁. monetary multiplier, price level. real GNP effected the change in the endognous variables separately 2.331. 12.660. 5.669. But it is found that the foreign reserves held by the central bank inversely related with the supply of domestic credit, with the estimated value of the being 1.033 and interest rate value of the being minus 0.456. Consequently. this result implicitly shows that vivid change in the GNP. price level. the change in the balance of payments on the supply of monetary aggregate approach have been estimated as valuable proprieties of the Korean economy.

換率의 決定에 있어서 現代的 資本市場의 Monetary Approach와 Portfolio Balance 比較分析

최종수(Jong-Soo Choi),김헌종(Hun-Jong Kim) 한국해양대학교 해사산업연구소 1992 海事産業硏究所論文集 Vol.2 No.-

Financial markets are assumed to clear instantaneously, with perfect capital mobility ensuring Uncovered Interest Rate Parity(UIRP) is maintained at all times. Market expectations are for the exchange rate to depreciate at a rate proportional to the gap between its current level and its long-run equilibrium value. In the goods market, The price level is sticky, adjusting over time at a rate proportional to the excess demand. The conclusions of the monetary model are pressrved in Long-Run equilibrium. In the immediate term, since the price level is fixed, shocks which create excess supple (demand) in the money market have liquidity effects, requiring a fall (rise) in the interest rate to clear the domestic money market. The change can only be reconciled with UIRP if there is a simultaneous exoectation of exchange rate appreciation (deperciation). Given the assumption about the way market expectations are formed, this in turn is only possible if the exechange rate jumps to a level beyond (in other woeds, overshooting) its longrun equilibrium. The original Dornbusch model can be extended in a number of different directions to make it more realistic. However, there modifications result in models which sometimes exhibit under than overshooting. One derivative of the Dornbusch model, developed by Frankel, has been extensively tested, with results that are generally disappointing. Apart from a short period in the 1970s, it fails either to track or forecast the exchange rate adequately. Portfolio balance models concentrate not simply on the demand for money, but on the demand for a menu of assets. The demand for each type of asset is seen in the context of a general portfolio allocation problem and, since it is the proportion of total wealth to be help in a particualr form which is to be decided, the determining variable assets. So the demand for any asset as a proportion of wealth will tend to rise when its own return rises, and fall when the return on competing assets increases. We assume domestic resdents hold only three types of asset: domestically issued money and bonds, and foreign currency bonds issued by a foreign government or central bank. As in the Dornbusch model, (goods) prices are taken as fixed in the short-run. Under these conditions and assuming financial markets clear at all times, short-run equilibrium will be obtained whenthe exchange rate and (domestic) interest rate are at a level such that demand is equal to supply for any two of the three assets. Open market purchases of either domestic or foreign bonds will cause depreciation and a fall in the interest rate in the short-run, the reprcussion on the exchange rate being greater and on the interest rate smaller, in the case of operations in the market for foregign securities. Increas in the stock of foreign bonds can only come about as a result of current account surpluses. The short-run impact on financial markets is an appreciation, keepion the domestic currency value of foreign bonds constant. Long-run equilibrium is characterized by a zero balance on current account, as well as static prices, interest rates and exchange rate. The production sector adjusts to a disturbance as a resuit of changes in the real exchange rate. As the price level moves during the adjustment phase, it interacts with the (nominal) exchange rate to change the balance of aggregate demand and supply, hence generating a current account surplus or deficit which persists until the stock of foregin currency assets has erached a level consistent with long-run equilibrium. In practice, the portfolio balance model is difficult to apply and the approximations tested have not been very successful in explaining the facts.

다양한 고염투석액을 이용한 혈액투석시 혈액량의 변화 및 부작용 발생의 관찰

김홍수,김상돈,김도헌,김헌종,고광현,김승정,마경애,김명성,정철권,이한민,지석배,신규태 대한신장학회 1999 Kidney Research and Clinical Practice Vol.18 No.3

Chronic hemodialysis patients frequently experience hemodialysis(HD)-related side effects caused by excessive ultrafiltration and abrupt change of osmolality. Sodium ramping in HD is known to reduce ultrafiltration-related side effects, but it frequently induces symptoms related to sodium overload. We wanted to know the relationship between blood volume changes and the side effects related to ultrafiltration during hemodialysis and whether we can individualize various sodium ramping methods according to the effect of change in blood volume( BV) and side effects of sodium ramping. We studied 9 hypotension-prone patients during HD. The duration of the study lasted for 5 weeks, each week using different sodium ramping protocols: protocol 1; dialysate [Na+] of 140mEq/L, protocol 2; dialysate [Na?] same as the predialysis serum [Na+], protocol 3; dialysate [Na+] was 20mEq/L greater than that of the patient's serum for 1hr, 10mEq/L greater than patient's serum [Na+] for 2hr and then the same as patient's serum] for the last 1hr, protocol 4; at the beginning of dialysis, dialysate sodium was ramped to 20mEq/L above the patient's serum sodium and then on a straight linear fashion lowered to the predialysis serum [Na+] at the end of dialysis, protocol 5; sodium was constantly ramped to 10 mEq/L above serum [Na+]. We measured the BV with Crit-Line IIR(In-Line Diagnostics, Corp., Riverdale, USA), the blood pressure during each HD and interdialytic weight gain. We documented subjective symptoms which occurred during the 5 treatment protocols by patient's questionnaire after each HD. The results were as follows. 1) The mean age of the patients(M:F=3:6) was 54.1years and 6 patients were diabetics. 2) There was no significant difference in the BV among the 5 protocols in both whole study population and individual. Neither was there a statistically significant difference in the BV with respect to hypotension during HD. 3) There were no episodes of hypotension(P value $lt;0.001) with protocols 3, 4, 5 compared to protocs 1 and 2. 4) Three patients during protocols 4 and 5 experienced more thirst after HD than during protocol 1 and one patient during protocol 4, 5 had more interdialytic weight gain than the protocol 1. As a whole, patients while on protocol 4 & 5 experienced more thirst than protocol 1 but patients during protocol 3 experienced the same degree of thirst as protocol 1. In summary, sodium ramping reduced HD-related side effects but this benefit could not be explained on the basis of blood volume change measured by the Crit-Line IIR. Protocol 3 may be more appropiate sodium ramping method in 4 of the 9 patients. These data suggest that protocol 3 may be used before protocol 4, 5 when we apply sodium ramping to the patients who frequently have hypotension during HD.

거대 점막주름을 동반한 위 랑게르한스세포 조직구증 1 예

김진홍,조혜진,조성원,김헌종,이기명,고광현 대한소화기내시경학회 2001 Clinical Endoscopy Vol.22 No.6

Langerhans cell histiocytosis is a rare disease entity in which various tissue are infiltrated by proliferating histiocytes. Involvement of alimentary tract is rare ($lt;5%), especially in the stomach, Only seven cases of gastric Langerhans cell histiocytosis have been reported in Enlglish literature. Diabetes insipidus is the most common endocrinologic complication. We report a case of Langerhans cell histiocytosis involving stomach and pituitary stalk. The diagnosis of gastric Langerhans cell histiocytosis and diabetes insipidus was based on gastric mucosal biopsy specimen from a Korean man with suspicious hypertrophic gastric folds of gastric body, water deprivation test and sella MRI.

악성 완전 담도협착에서의 경피적 세침천자술에 의한 경피적 내시경적 담도배액술

김진홍,조성원,김헌종,함기백,고준호,유병무,고광현,한동석 대한소화기내시경학회 2000 Clinical Endoscopy Vol.20 No.2

Nonsurgical drainage of malignant obstructive jaundice is an interesting alternative to surgical drainage in the palliative treatment of pancreaticobiliary neoplasms. Biliary drainage by endoprosthesis is as effective and better supported than percutaneous external drainage, but more difficult to control. Endoscopic retograde biliary drainage (ERBD) is a safe and effective biliary drainage procedure, and is indicated with malignant obstructive jaundice in patients on whom endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic sphincterotomy (EST) can be performed. A nonoperative method of palliation was used in patients with malignant obstructive jaundice, in whom a biliary endoprosthesis could not be placed endoscopically due to complete obstruction of the bile duct. A guide wire was manipulated through the lesion by a percutaneous transhepatic route, after puncturing the tumor by a fine needle, and retrieved from the duodenum through an endoscope. A stent was then passed through the endoscope over the guide wire across the stricture.

자기 연상 신경망에서 내부 파라메타의 변화에 따른 성능 변화 연구

김우태,진성일,김헌종 경북대학교 전자기술연구소 1993 電子技術硏究誌 Vol.14 No.1

Fault tolerance caused by internal parameter modeling of neural networks(NNs) is evaluated 52 binary images of lish alphabet ate used for the inputs of the NNs, which is trained to have the ability of autoassoiation using BP algorithm Then performance is bested under the different parameters from of learning. The parameters considered here are the slope of sigmoid function, the quantization bits of weights and the partial loss of weights. The test result shows that the NNs has sable performance at large in site of the variations of internal parameters.

후천성으로 추정되는 C1 esterase inhibitor 결핍이 동반된 혈관 부종 1례

박해심,김헌종,김희연,한동석,남동호,조재웅,정혁준,하창영,김선신 대한알레르기학회 1999 천식 및 알레르기 Vol.19 No.2

Angioedema is a well-demarcated localized edema involving the deeper layers of the skin, including the subcutaneous tissue. Angioedema occurs with Cl esterase inhibitor (Cl INH) deficiency that may be inborn as an autosomal dominant characteristic or may be acquired. Acquired angioedema (AAE) is a rare disorder characterized by adult onset and lack of evidence of inheritance of the disease. Two types of AAE are known today: type I in which there are lowering of functional Cl INH, an underlying disease such as a B-cell disease, and no detectable autoantibodies to Cl INH, type II with anti Cl INH autoantibodies in the circulation without detectable underlying disease and with depressed functional Cl INH levels. We experienced a case of angioedema in a 29-year old man. He had no family history of angioedema and laboratory data showed depressed Cl-INH levels. We diagnosed the case as acquired type of angioedema. Even though we could not measure anti-Cl INH auto-antibodies, we identified the case as type II because there was no evidence of underlying disease.

국제이전가격 결정요인에 대한 실증적 연구 : 국내 외국인 투자 기업을 중심으로 Based on Foreign Direct Investors in Korea

최종수,김헌종 한국국민경제학회 1999 경제연구 Vol.8 No.2

Peutz-Jeghers 증후군 환자에서 발생한 장중첩증 1예

이광재,김진홍,조성원,이태승,김헌종,함기백,진윤미,고광현,박소윤 대한소화기내시경학회 2000 Clinical Endoscopy Vol.20 No.1

Peutz-Jeghers syndrome is a rare autosomal dominant disorder defined by hamartomatous polyps of gastrointestinal tracts and the occurrence of melanin spots on the mucocutaneous surface. This syndrome has important complications such as malignant transformation, gastrointestinal bleeding, and intussusception. About 50% of patients with Peutz-Jeghers syndrome involved Intussusception. A case of Peutz-Jeghers syndrome with intussusception was recently experienced and herein reported.