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백승진(Seung Jin Paik),박호길(Ho Gil Park),박인서(In Suh Park),최흥재(Heung Jai Choi) 대한소화기학회 1972 대한소화기학회지 Vol.4 No.2
The earliesi zeport of curious deposition of calcium salts within the gallbladder was made by Churchman in 1911. In 1926, Volkmann reported two cases and first used the term Kalkmilchgalle or milk of calcium bile. Milk of calcium bile is a relatively rare disease, and has never been reported in Korea. A 4()-year-old male was admitted to the Severance Hospital rith chief complaint of dull pain in R.U.Q. of 3 monthi duration under the clinical impression of chronic cholecystitis due to gallstone. Oral cholecystogram revealed well opacified gallbladder showing a variety of shape with the change of the position of the patient. A visible gallbladder of calcium density on upper G.I. Series taken 2 days later and repeated plain films of the abdomen successively taken aroused a suspicion of milk of cacium bile. The plain film of the abdomen taken about one month after discharge to confirm the visualization of gallbladder without cholecystography still showed similar findings of opacified gallbladder, with multiple radiolucency suggesting the presence of gallstones in the cystic duct and gallbladder by which preoperative diagnosis of milk of caIcum bile could be made with certainty.
원발성 (原發性) 간암 (肝癌) , 각종 간질환 (肝疾患) 및 타장기악성종양 (他臟器惡性腫瘍) 환자의 혈청 Alpha1 - Fetoprotein 에 관한 연구
백승진(Seung Jin Paik),이해선(Hae Sun Lee),최흥재(Heung Jai Choi) 대한소화기학회 1972 대한소화기학회지 Vol.4 No.1
N/A A Survey using Micro-Ouchterlony double immunodiffusion technique for the detection of alphay- fetoprotein in 127 adults including 25 cases of hepatoma, 40 cases of various liver diseases, 22 cases of other malignancies and 40 normal individuals revealed the folloiving results. 1. Serum AFP was positive in 15 out of 25 patients vith hepatoma (60%). 2. Among the 25 patients with hepatoma, the diagnosis was confirmed by biopsy in 12 and ivas made clinically in 13. In 7 of 12 biopsy-confirmed cases (58. 3%), and in 8 out of 13 clinically diagnosed cases (61. 5%), the serum AFP was positive. 3. In all of 40 cases of various liver diseases including metastatic carcinoma, cirrhosis, hepatitis and abscess, 22 cases of other malignancies and 40 normal individuals the serum AFP was negative, 4. There were no definite correlation between laboratory or clinical features and presence of the serum AFP in patients with hepatoma.
서버상태의존 도착률을 갖는 M/G/l 모형의 최적 제어정책
백승진,허선,Paik, Seung-Jin,Hur, Sun 한국산업경영시스템학회 1997 한국산업경영시스템학회지 Vol.20 No.43
M/G/1 queueing system is one of the most widely used one to model the real system. When operating a real systems, since it often takes cost, some control policies that change the operation scheme are adopted. In particular, the N-policy is the most popular among many control policies. Almost all researches on queueing system are based on the assumption that the arrival rates of customers into the queueing system is constant, In this paper, we consider the M/G/1 queueing system whose arrival rate varies according to the servers status : idle, set-up and busy states. For this study, we construct the steady state equations of queue lengths by means of the supplementary variable method, and derive the PGF(probability generating function) of them. The L-S-T(Laplace Stieltjes transform) of waiting time and average waiting time are also presented. We also develop an algorithm to find the optimal N-value from which the server starts his set-up. An analysis on the performance measures to minimize total operation cost of queueing system is included. We finally investigate the behavior of system operation cost as the optimal N and arrival rate change by a numerical study.
노원식 ( Won Shick Loh ),백승진 ( Seung Jin Paik ),이수익 ( Soo Ik Lee ),문영명 ( Young Myoung Moon ) 대한내과학회 1971 대한내과학회지 Vol.14 No.7
There have been few cases of Wilson`s disease reported in Korea. This paper presents two Korean patients with Wilson`s disease, and reviews pertinent literatures. The first patient, 33-year-old house-wife had intermittent wing-beating tremor, dysarthria an
노원식(Won Shick Loh),이해선(Hae Sun Lee),박영의(Young Euy Park),백승진(Seung Jin Paik),강진경(Jin Kyung Kang),최흥재(Heung Jai Choi) 대한소화기학회 1972 대한소화기학회지 Vol.4 No.1
N/A Cancer is now the leading cause of death in most countries, and there appears to be an actual increase in the prevalence of cancer in recent vears. Recent statistics of the United States of America and 3Vestern Europe indicated that the cancer is the second most frcquent cause of death being only preceded by cardiovascular diseases. During the last four dcades our kiiosvledge of the causation oi turriouvs has advanced rapidly. The following studies of tavo sorts have contribu.ed to this advance; a) statistieaJ studies of occupationa1, social and racial f-ctors in the causation of human neop!asms, and b; studics in the experimental production of turr.ours in animals by rneans of chemical and other agents. This statistical studies was done on 4, 905 cases of malignancies, diagnosed pathologically and clini- cally among 76,763 patients admitted to Severance Hospital during the last 10 years from 1960 tn 1969, and the following results vere obtained. L. Annual incidence of malignancies showed gradual increase in total nurnber, however there is no significant variation in ratio to the number of total in-patients during the years of observation, mean being 6. 4%. 2. Ma!e to fem!e ratio of all malignancies avas about 1: 1. 3, Over the hzlf (56,7%) of a!I malignancies ivas in 5th and 6th decades, the peak age being in 6th decade in male (33, 5%) and 5th decade in female (28. 9%). 4. The relative frequency of all malignancies by system was in order of cancer of digestive system (43. 1%), genitourinary system and breast(32. 2%), respiratory system (9. 0%), hematopoietic system (8. 1%), musculoskeletal system and skin (3. 4%), endocrine system (1.3%) znd others (2. 9%). 5. The over all frequency of maIignancies by organ ivas in order of cancer of stomach (24. 1%), uterus (19, 9%), liver (10. 8%), lung(7. 4%), leukemia(4. 8%). In male the order of frequency was cancer of stomach (34. 2%), liver (17. 9%) 3, Iung (11. 5%), leukemia (5. 3%), lymphoma (4. 4%), while ir; female it was cancer of uterus (40.2%), stomach (13. 8%), breast (8. 2%), ovary (5. 2%), leukemia (4. 4%). 6. The peak age of relatively frequent ma]ignancies was as follows: the peak age of the cancer of the stomach, liver, lymphoma and lung was in the 6th decade; that of uterus, breast, and coIo-rectal
Double Two - Step Exercise Test 의 진단적 의의
서정삼 ( Chung Sam Suh ),( J. T. Santinga ),김용진 ( Yong Jin Kim ),한지숙 ( Jee Sook Hahn ),백승진 ( Seung Jin Paik ),정석호 ( Suk Ho Chung ) 대한내과학회 1970 대한내과학회지 Vol.13 No.4
As coronary artery disease has often no clinical symptoms or at times atypical symptoms, it is difficult to diagnose this disease only with history and physical examination. The resting electrocar-diographic findings may also be normal. Levy et al. attempt