사례기반예측시스템의 정확한 예측을 위한 최적 결합 사례개수결정방법에 관한 연구

이훈영(Hoon Young Lee),박기남(Ki Nam Lee) 한국경영학회 1998 經營學硏究 Vol.27 No.5

A case-based forecasting system has been used to predict the outcome of current problem using those of past analogous cases. However, the effectiveness of its forecasting depends on the three factors: (1)accurate measure of similarity, (2)appropriate determination of the number of cases to combine, and (3)appropriate weighting of similar cases when combining them to produce a forecast. Among these three, determining the number of cases to combine is the most critical to the accuracy of forecasting. In this paper, we thus focused on the second, though briefly addressing these all three factors. We suggested several methods to determine the number of cases to combine, such as (1)fixed number combining methods, (2)optimal spanning methods, and (3)mathematical programming model using similarity distribution. A simulation study was conducted to test their effectiveness for accurate forecasting. It proved mathematical programming model using similarity distribution the best among the suggested.

비선형 판별분석을 이용한 기업의 부실예측에 관한 연구 : 기종의 부실 예측 방법들과의 비교

이훈영 ( Hoon Young Lee ),이시환 ( Shi Hwan Lee ) 慶熙大學校 社會科學硏究院 1998 社會科學硏究 Vol.24 No.-

리더십 유형과 감성지능이 조직시민행동에 미치는 영향에 관한 연구

이현호(Hyun Ho Lee),이흥연(Heung Youn Lee),이훈영(Hoon Young Lee) 韓國經營史學會 2015 經營史學 Vol.76 No.-

The purpose of this study is to investigate how to maximize organizational citizenship behavior of the union in small and medium-sized business so as to compete with large companies. In this paper, we suggest the ways to improve competitiveness of Korean small and middle-sized business by developing the model of emotional intelligence and leadership. We classified the leadership into three types and examined the organizational citizenship behavior by using the emotional stimulus as a moderating variable. Through the empirical study, we firstly find that the transactional leadership is the most influential on understanding the other``s emotion. Secondly, transformational leadership mostly influences the utilization of emotion among the factors in the emotional intelligence. Thirdly, the servant leadership is the most influential on the other``s emotional appraisal among the elements of emotional intelligence. Fourthly, the utilization of emotion is the most influential on the organizational citizenship behaviour. Among different leadership styles, the transactional leadership is the mostly influencing on the organizational citizenship behaviour through the utilization of emotion and the other``s emotional appraisal in small and medium-sized companies. This result is not concurrent with the study of Bass(1985), Niehoff & Moorman(1993), showing that the transformational leadership is the most influential on the organizational citizenship behaviour. It quite meaningfully shows how Korean small and medium-sized companies are different from those of large companies corporations. The relative significance of transactional leadership is partly due to the recognizable differences of salary, benefits and social recognition between small and medium-sized firms and large companies. 본 연구의 목적은 우리나라 중소기업들이 규모가 큰 대기업들과 경쟁하기 위하여 어떻게 해야만 내부 구성원들의 조직시민행동을 극대화 할 수 있는지를 살펴보고자 하는 데에 있다. 본 연구를 통해서, 우리나라 중소기업들에 적용해야 할 리더십 유형과 감성지능의 모형을 제시하여 우리나라 중소기업의 경쟁력을 제고 시키고자 한다. 이를 위해 본 연구에서는 리더십 유형을 3가지로 분류하였으며 감성지능을 매개로 하여 조직시민 행동을 측정하는 실증연구로 진행하였다. 실증연구 결과를 요약하면 다음과 같다. 첫째, 거래적 리더십이 타인감성 이해에 가장 큰 영향력을 미치는 것으로 나타났다. 둘째, 변혁적 리더십이 감성활용에 가장 큰 영향력을 미치는 것으로 나타났다. 셋째, 서번트 리더십이 타인감성 이해에 가장 큰 영향력을 미치는 것으로 나타났다. 넷째, 감성활용이 조직시민행동에 가장 큰 영향력을 미치는 것으로 나타났다. 중소기업에 적용하는 리더십유형의 영향력 크기를 비교했을 때 본 연구에서는 거래적 리더십이 자기감성활용, 타인감성이해를 매개하여 조직시민행동에 가장 큰 영향력을 미치는 것으로 나타났다. 이러한 연구결과는 기존 Bass(1985), Niehoff & Moorman(1993)이 주장한 변혁적 리더십이 조직시민행동에 더 큰 영향을 미친다는 연구결과와 상이한 것으로 우리나라 중소기업의 특징을 알려주는 의미 있는 자료라 생각되며, 이러한 결과는 임금, 복리후생 등에서 대기업들과는 차별화가 발생되어 이에 대한 보상차원의 성격이 거래적 리더십의 효과를 더 높인 것으로 볼 수 있을 것이다.

반복적인 두개내 감염에서 유리대망피판을 이용한 경질막 재건

이훈영(Hoon Young Lee),은석찬(Seok Chan Eun),한정호(Jung Ho Han),방재승(Jae Seung Bang),김재용(Chae Yong Kim),박도중(Do-joong Park),백롱민(Rong Min Baek) 대한두개저학회 2011 대한두개저학회지 Vol.6 No.1

Purpose : Postoperative cerebrospinal fluid (CSF) leakage after neurosurgery could lead to potentially lethal complications. Reoperations, multiple operations, cranial radiotherapy and poor vascularization of the dura graft may lead to delayed healing of the suture site and resultant persistent CSF leaks. In this report, we present a technical experience of duroplasty with omental free flap. Methods : Between 2007 and 2011, the authors performed duraplasty in nine patients with recurrent subdural empyema and intracranial infection. The omental free flap transfer was intended for patients who could not be cured with conventional surgical debridement and lyophilized dura appliance. Patient ages ranged from 14 to 47 years (mean, 31.5 yr). There were five men and four women. Treatment was required for malignant tumors (n=4), cerebral hematomas (n=3) and the result of traumas (n=2). After harvesting the omentum laparoscopically, the flap was sutured to the dural defect in a watertight fashion. The most commonly used recipient vessels were the superficial temporal artery and vein. Results : The postoperative course was uneventful and flap survival was excellent in all patients. Cerebrospinal fluid leaks were controlled successfully. Patients were discharged with no evidence of wound discharge and there were no reports of infection or CSF leakage recurrence. Conclusion : Duraplasty using omental flap is an effective technique to control CSF leaks, especially when dura is poorly vascularized and less viable. The delicate nature and great pliability of the omental flap make it unique and competent for reconstructions of dural defects.

입원기간에 따른 의료서비스 품질요인이 고객만족에 미치는 영향에 관한 연구

이훈영 ( Hoon Young Lee ),정기택 ( Kee Taig Jung ),신은규 ( Eun Kyu Shine ),한용준 ( Yong Jun Han ) 한국병원경영학회 2008 병원경영학회지 Vol.13 No.3

The purpose of this study is to identify which factors of medical service quality were considered important by patients based on survey on eight hospitals located in Seoul. We analyzed the difference in impact of health service quality factors between the two groups with short and long inpatient days. In addition, we analyzed which service factors affected the customer satisfaction more differently across the inpatient groups. We found that patient satisfaction was not different between the two groups with short and long inpatient days. But the two groups showed different priority orders of medical service factors that affect patient satisfaction. In the group with long inpatient days, the order of medical service factors are cleanness, speciality, process. In the group with short stay, important factors are speciality, cleanness and convenience of facilities. These findings imply that hospitals should set up different marketing strategies across the different inpatients groups.

(경쟁시대)競爭時代의 (병원)病院마케팅(전략)戰略: 포지셔닝과 고객만족을 중심으로

이훈영 ( Hoon Young Lee ),정기택 ( Ki Taig Jung ) 한국보건행정학회 1995 보건행정학회지 Vol.5 No.2

이동형 마이크로폰을 사용한 음원 위치추정의 정확도 향상 방법

이훈영(Hun-Young Lee),김성진(Seong-Jin Kim),오훈(Hoon Oh) 한국통신학회 2011 한국통신학회 학술대회논문집 Vol.2011 No.11

웹 서비스품질이 사이버 브랜드자산의 구축에 미치는 영향에 관한 연구

이훈영(Hoon Young Lee),박기남(Ki Nam Park) 한국마케팅학회 2000 마케팅연구 Vol.15 No.1

본 연구는 브랜드자산에 관한 기존연구들 고찰하여 지금까지 정의되지 않았던 사이버브랜드 자산의 개념을 새롭게 정의하고 그 구성 요소들을 구성하였다, 또한 웹 서비스라는 용어에 관한 학문적 정의를 내리고 웹 서비스의 품질을 구성하는 구성요소로 정보서비스 품질차원과 광고서비스 품질차원을 정의하였다.정의된 웹 서비스 품질차원들을 바탕으로 사이버 브랜드자산의 구성요소들에 미치는 영향을 실증 분석한 결과 웹 서비스품질이 대부분의 사이버 브랜드자산의 구성요소들에 유의한 영향을 미치는 것으로 나타났다. 이 연구의 결과는 향후 대규모 광고를 수행할 수 없는 중소규모 사이트들의 사이버 브랜딩전략의 수립에 실질적인 시사점을 제공할 수 있을 것으로 기대한다.

금융신상품 성공요인과 매개요인에 관한 실증연구

이훈영(Hoon Young Lee),김근배(Kun Bae Kim) 한국경영학회 1995 經營學硏究 Vol.24 No.1

Using 48 financial service products introduced in U. S. A. between 1984 and 1987, we investigated the key factors influencing new product success. The results of correlation and partial correlation analyses are quite similar to those of previous research. That is, Personal Selling, Growth of Market and Size of Market are most significant for the success of products. Some other factors such as Marketing Support, Product Superiority, and Customer Understanding and Interest also have some influence. In the moderate variable analysis, however, we found many interesting results which had been overlooked in the previous research. Technology and Product and Need Fit, Customer Understanding and Interest and Product & Need Fit, Market Competitiveness and Cost, Customization and Cost, and Newness to the Firm and Cost have considerable moderate-effects on each other. In addition, Product Superiority and Personal Selling, Technology and Product and Need Fit, Product and Need Fit, and Customer Understanding and Interest have an interactive synergy effect. In the new product development, therefore, these factors should be carefully appraised. It seems that the result could be applied to the Korean financial market. However, it would be worth-while to replicate the study with Korean financial product data.

웹기반 고객효용 측정시스템에 관한 연구

이훈영(Hoon Young Lee),임민형(Min Hyung Lim),양주환(Joo Hwan Yang) 한국경영학회 2003 經營學硏究 Vol.31 No.7

The purpose of this study is to develope the marketing decision making support system that can effectively estimate customer utility in terms of interactive communication with customer by using the information system like internet. Interactive communication using internet reduces the large portion of respondent burden in responding to the complicate questions in conjoint research. The system collect the data allowing respondents choose the most preferred among four possible products generated by orthogonal design in conjoint analysis and shown in the computer screen instead of sorting many products in terms of their preference. Respondents are not forced to answer all the fixed number of questions. Rather they can stop answering the questions at any moment. When the information obtain from respondents are not enough, the system will infer the information necessary to analyze the respondent`s utility from the existing response database using case based reasoning technique. The contribution of this study can be summarized as follows. Firstly, this study is a meaningful attempt to improve marketing research method. In the traditional conjoint analysis the number of cards generated was the great burden of respondent, which was greatly reduced by the computerized system developed in this study. However the forecasting accuracy of the system was as good as the model generated by the traditional method. Secondly, the system enable to use the accumulated customer utility data in developing diverse marketing activities such as market segmentation, new product development, and market simulations. Thirdly, the system can recommend the products according to the customer utility estimated. It will increase customer`s satisfaction but reduce the company`s sales expenses. Lastly, by analyzing the utility data in the database, the company can develop various database marketing and customer relationship management strategies.