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최교원(Choi KyoWon) 한국전자거래학회 2004 한국전자거래학회지 Vol.9 No.4
본 연구는 국내 전자상거래 시장규모 예측모형의 개발을 위해 통계청의 자료를 취합하며 이를 분석하여 각 부분별 - BtoB, BtoG, BtoC - 전자상거래 시장규모에 적합한 통계적 예측모형을 개발하였다. 마지막으로 개발된 예측모형에 대한 타당성 검토를 수행하며 최종적으로 가장 적절한 국내 전자상거래 시장 규모 예측모형을 제안하였다. We guarantee the significance of the provided prediction model and predicted figures from the experts consulting group and we product the prediction figures of the domestic e-commerce market size in future by business subjects, BtoB, BtoG and BtoC. Besides, we do predict by the high raked 6 merchandises in the case of BtoC market size prediction. We use the KNSO(Korea National Statistical Office) BtoB, BtoG and BtoC data to ensure the significance of data.
문형주,최교원,홍기학,이기성,손창균,Moon, Hyung-Joo,Choi, Kyo-Won,Hong, Ki-Hak,Lee, Gi-Sung,Son, Chang-Kyun 한국벤처창업학회 2007 벤처창업연구 Vol.2 No.1
In this paper we investigated the organization of regional business incubation center itself and that of companies in center and scrutinized the problems and obstacles to take self-supporting administration for both of center and companies in it. We classified the companies operating inside the center into four types according to the formation of organizations analyzed them, and proposed some solutions to enhance their operating abilities to obtain elf- supporting administration.
증레 : 식도의 melanosis 에서 악성변화한 원발성 악성 흑색종 1 예
이학준(Hak Jun Lee),최선택(Sun Taek Choi),은종렬(Jong Ryul Eun),권순욱(Soon Uk Kwon),김봉준(Bong Jun Kim),최교원(Kyo Won Choi),송영두(Young Doo Song),장병익(Byeong Ik Jang),김태년(Tae Nyun Kim),정문관(Moon Kuxm Chung) 대한내과학회 2001 대한내과학회지 Vol.61 No.1
Primary malignant melanoma of the esophagus (PMME) is an extremely rare but aggressive disease that composes less than 0.1% of all primary malignant neoplasm of the esophagus. PMME was first reported in 1906 and nearly 180 cases of primary esophageal malignant melanoma have been published in the medical literature. Symptoms of the primary malignant melanoma of the esophagus mimic that of any malignant obstructing lesion of the esophagus and the metastatic spread by lymphatics and vascular routes are common. Resection of the tumor with an anastomotic procedure seems to be the treatment of choice, however prognosis is poor. At present, chemotherapy and immunotherapy have no major role in treatment. We report a case of 67-year-old man with primary malignant melanoma of the esophagus originated from esophageal melanosis with a review of the literature. (Korean J Med 61:71-76, 2001)
운동부하심전도검사에서 있어서 ST / HR Slope 의 진단적 의의
이태일(Tae Il Lee),권준영(Jun Young Kwen),최교원(Kyo Won Choi),김영진(Young Jin Kim),신동구(Dong Gu Sin),김영조(Young Jin Kim),심봉섭(Bong Sup Shim),이현우(Hyun Woo Lee) 대한내과학회 1995 대한내과학회지 Vol.48 No.3
closely related to changes in myocardial oxygen demand during higher exercise workloads, the ST/HR slope should more accurately reflect the balance of myocardial oxygen supply demand than does simple mearsurement of the amount, of exercise induced ST segment depression, For improvement the accuracy of exercise stress electrocardiogram for the identification of coronary artery disease, exercise stress test and coronary angiograpty were performed. Methods: Exercise stress test and coronary angiography were performed in 213 patients who visit Yeuneg-nam Universit.y Hospital due to chest pain. Results: 112 patints had normal coronary artery and 101 patients had coronary artery stenoses. Among 101 patients 64 patients had 1 vessel disease, 33 patients had 2 vessel disease, 4 patients had 3 vessel disease. The sensitivity of ST segment. change criteria was 60.4%, specificity 68.8%,. At cutpoint 1.1, 2.4, 3.0 and 6.0 μV/beat/min the sensitivity of ST/HR slope were 60.4%, 48.5%, 42.6%, and 20.8%, the specificity were 60.7%, 88.4%, 96.4%, 100%, and overall test accuracy were 60.7%, 69.5%, 70.9 % and 62.4%, respectively. The mean ST/HR slope was significant higher in coronary artery disease group than normal coronary artery group(0.9±l.l vs 3.2±4.0μV/beat/min, p< 0.05). Conclusion: In conclusion, ST/HR slope did not improve the diagnostic accuracy of the exercise test to identify the presence of coronary arytery disease but was useful for the identification of severity of coronary artery disease.
혈청 anti - HCV 양성자의 역학 및 가족내 감염과 HBV 표지자에 관한 조사
이헌주(Heon Ju Lee),강호정(Ho Jung Kang),김기덕(Kee Duck Kim),박찬원(Chan Won Park),윤현대(Hyun Dae Yoon),전진종(Jin Chong Chun),최교원(Kyo Won Choi),최희진(Hee Jin Choi) 대한내과학회 1992 대한내과학회지 Vol.43 No.6
Background: Transfusion is a well-known source of hepatitis C virus (HCV) infection but over half of the hepatitis C patients do not have any suspicious source of infection. Epidemiological survey and serological test for HBV marks were done among anti-HCV positive chronic liver disease patient and their family members. Method: 74 cases of anti-HCV postitive chronic liver disease patients were evaluated for the evident source of HCV infection and 188 of their family members were consulted for the infection of HCV. To compare the mode of HBV infection with HCV, serum HBsAg, anti-HBc and anti-HBs were checked in 43 of HBsAg positive chronic liver disease patients, 190 of their family members, 64 anti-HCV postive chronic liver disease patients and 239 of normal control persons. Results: 35cases (47.3%) of 74 anti-HCV positive chronic liver disease patients had no suspicious source of infection and only 16 cases (21.6%) had the history of past transfusion. No family members except 3 (one infant, one IV drug abuser and one wife) in 3 families among 74 families were anti-HCV positive. 29 of 43 (67. 4%) families of HBsAg positive chronic liver disease patients had at least one of HBsAg positive member. Characteristically, HBsAg was positive in almost all cases of offsprings born to mothers of HBsAg and HBeAg positive chronic liver disease. 2 of 64 (3.1%) serum anti-HCV positive patients had HBsAg in their sera. Anti-HBs positive cases were 11 of 64 (17.2%.) anti-HCV positive chronic liver disease patients and isolated anti-HBc positive cases were 40 of 64 (62.5%). On the other hand, in normal control, the positive rate of anti-HBs and isolated anti-HBc were 57,4% and 24.3%(> in each (p<0,005, in both). Conclusion: In Korea, vertical transmission was the main source of HBV infection but HCV disease might be horizontal and sporadic. No remarkable difference in HBV infection rate between anti-HCV positive chronic liver disease patients and control persons. Superinfection of HCV on person who already was exposed to HBV may occur but this assumption could be depend on accurate testings for HBV and HCV. Some derangement in immune system and reaction or interaction between HBV and HCV should be considered in anti- HCV positive patients but before, isolated serum anti- HBc positive sera of chronic liver disease patients should be examined by confirmatory tests. To reduce the number of HCV patients, defining the evident source of the sporadically infected HCV cases could be helpful.
인사고과 제도의 개선방안에 관한 연구 : K은행을 중심으로 The case study of K bank
최교원,김태균 東新大學校 2002 論文集 Vol.12 No.-
The purpose of this study is to find the situations and problems of performance appraisal system in korean corporations, and to improve the problems of system. The study method was used by method of literature review. The references of study were included the survey data and eight corporation's performance appraisal data (4 cases were those of Korean corporations, and others were those of American/Japanese corporations). The finding problems of performance appraisal system in Korean corporations are as follows: 1) Application limitation of performance appraisal results, it could not be useful tools for developing the employee's performance ability and improving the achievements in their company. 2) Current performance appraisal system was turned out as low incentive system, incurring low productivity and weakness of international competitiveness. 3) The system was majorly used as only control tools of employees. 4) The system was founded not effective tools for employee's accurate performance ability or achievements, but was used as forced assignment method. 5) The results did not open for employees. Thus, the employees couldn't be reliable the objectivity and accuracy of the results. 6) Training for appraisors or development of appraisal skills was not executed. It's problem was liable to be lack of objective or accurate appraisal ability or skills. 7) The performance appraisal tools are considerably abstract or extremely comprehensive. To improve the above problems of performance appraisals, the following recommendations should be accomplished in Korean corporations. 1) Understanding of performance appraisals should turn around toward application of essential informations to decide the employees wages. 2) The results of appraisals should be opened. 3) Appraisals by the purposes should be implemented, not by the uniformity. 4) Absolute appraisals, not relative appraisals by forced assignment method, should be employed to evaluate the accurate job performance ability or output. 5) Opportunity for participating by employees should be enlarged. 6) Training or skill education for appraisors should be strengthened to gurantee the objective and accurate appraisals.