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이기헌,황호원,오영진,Lee, Ki-Heon,Hwang, Ho-Won,Oh, Young-Jin 한국항공운항학회 2014 한국항공운항학회지 Vol.22 No.1
According to the prediction of Aviation Industry Corporation of China, in the next 20 years, China will have an increase of 4,583 civilian airliners, including 3,682 jumbo jets and 901 regional aircrafts. Chinese commercial aviation aircraft market will undoubtedly grow rapidly. until the year 2030, China's share of the global aircraft fleet will increase from 9% to 15%. In addition, the business jet market has a huge growing room in the global industry, the deliveries will reach 10,000 units in the next 10 years, and the Chinese market deliveries will reach 23,600 in the next 20 years. China's aviation market, is and will be enormous in the future. It is one of the main engines of economic growth in the field. China's civil aviation transportation is based on dazzling economic development. Air transport is the fastest growing power for the time being. China's aviation sector will have an average annual gross of about 10%, and more likely to continued growing and it is expected to be world's major aviation market around the world. As the result, since one of future the important industries will be emerged, Air policy enforcement and considering the reality of our future prospects for the airline industry presented.
인터넷 오픈마켓 거래안전 요인과 소비자신뢰의 관계 연구
이기헌,Lee, Ki-Heon 한국CRM학회 2006 CRM연구 Vol.1 No.1
본 연구는 우리나라 전자상거래 업계에서 새로운 업태로 급격하게 성장하고 있는 인터넷 오픈마켓기업이 고객의 신뢰도 확보를 위하여 갖추어야 할 전략적 요소는 무엇인지 파악하고자 실시되었다. 소비자들이 오픈마켓의 명성과 평판을 보고 거래에 참가하지만, 실제 거래는 인지도나 만족도가 낮은 중소규모의 판매자 또는 일부 프로 슈머와 거래해야 된다는 점에서 판매자의 신뢰확보 여부가 오픈마켓 성패의 중요한 요소가 될 것이다. 연구결과, 오픈마켓에 참가하는 소비자가 구매과정에서 경험한 만족도는 7점 척도기준 4.23으로 비교적 낮은 수준이었으며, 거래의 안전성 확보를 위하여 중요하게 인식하는 요인은 (1) 사후적 피해보상의 가능성 (2) 상품품 질 및 브랜드의 진정성 (3) 상품의 신속 정확한 배송 (4) 상품가격 및 품질 등 선택정보 제공 등으로 나타났다. 이러한 요인들과 판매자의 신뢰도와의 관계를 회귀분석한 결과 양자의 관계는 매우 유의한 것으로 나타나 이러한 요인들이 충족될 경우 판매자에 대한 소비자의 신뢰도가 향상될 것으로 나타났다. 따라서 오픈마켓 기업은 소비자 신뢰확보를 위하여 판매자에 대한 소비자의 신뢰 확보를 위하여 지속적인 관계마케팅, 고객관계 관리 전략이 필요한 것으로 판단된다. Internet B2C marketplace such as 'Auction', 'G Market', 'Daum onket' etc.(called open market) has grown sharply in sales about yearly 100% rate increase in recent 1-2 years in Korea. Although Open marketplace has much reputation and the customer loyalty, almost of merchants participated in open market, which size in sales are medium/small, has poor reputation and trust. Consumers, who have to get in touch with untrustworthy merchants for trade in openmarket, perceive high trade risk which undergo the monetary damages such as 'merchandise never received'. This examines what factors consumer trust develop in online marketplace. This study explores several perceived risk factors in an open market by factor analysis and multi-regression to prove the relationships between the degree of trust for the merchants and the perceived trade risk. 133 data collected from the open market user data in this survey. In this study, the consumer's trade satisfaction in open market is low by 4.2 point degree of 7 point likert scale. and perceives 4 trade risk factors such as (1) 'failure to honor warranty or guarantee' (2) 'defective/poor goods in quality' (3) 'merchandise never received or received late' (4) 'poor information'. the degree of merchant's trust has significant relationship with the degree of perceived risk(sig. = 0.0000, $R^2=.327$) We find that the open market has to enhance the relationship marketing of trust by developing the strategies.
공항 보안발전에 관한 연구 -인천국제공항 보안검색을 중심으로-
이기헌 ( Ki Heon Lee ),황호원 ( Ho Won Hwang ) 한국항공경영학회 2010 한국항공경영학회지 Vol.8 No.1
If a dangerous situation occurs at the airport, it will have fluence on national security and national life. Regardless of in case of emergency. the guard is equipped strictly though professional manpower and excellent equipment. Aviation security members are in charge of important role in the airport as a security guard but when their conditions are compared to the military and police. they are not enough working conditions. Therefore the aviation security personnel are very important not only in the facility but also in the entrance and exit, person control. So professionalization and the legal system must be improved for a betterment of a labor condition and a guarantee of a legal status.
고도근시에서 스무딩을 병용한 고등각막표면연마굴절수술(Advanced Surface Ablation)의 임상성적
안기수,이승욱,이기헌,최봉준,Ki Su Ahn,MD,Seung Wuk Lee,MD,Gi Heon Lee,MD,Bong Joon Choi,MD,PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.3
Purpose: To investigate the results of Advanced Surface Ablation (ASA) coupled with `smoothing` to smooth the ablation surface after covering masking fluid. Methods: ASA was performed in 61 eyes with ablation depth of more than 75 μm. The mean refractive error was -5.88 ± 1.27 D and mean ablation depth was 102.93 ± 12.06 μm. Smoothing was performed in all patients (mean depth 16.79 ± 2.43 μm, mean diameter 8.77 ± 0.16 mm). Customized Aspheric Transition zone (CATz) was used in the laser algorithm. Results: The mean refractive error was -0.29 ± 0.41 D at postoperative 6 months and 97% of patients had an UCVA of 1.0 or better at postoperative 6 months. There was no statistically significant difference in magnitude of high-order aberrations at postoperative 6 months. The magnitude of total spherical aberrations increase was 0.084 μm at postoperative 6 months (p<0.05, paired t-test). The cornea was maintained clear in the majority of eyes. Conclusions: Excellent results were obtained by ASA coupled with `smoothing` in high myopia patients with an ablation depth greater than 75 μm. J Korean Ophthalmol Soc 2012;53(3):365-371
이인호 ( In Ho Lee ),이기헌 ( Ki Heon Lee ),박세진 ( Sei Jin Park ),홍원기 ( Won Ki Hong ),김태진 ( Tae Jin Kim ),임경택 ( Kyung Taek Lim ),심재욱 ( Jae Uk Shim ),박현 ( Hyun Park ),성석주 ( Seok Ju Seong ),박종택 ( Chong Taik Pa 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.4
Objectives: The aim of this study was to evaluate the clinicopathologic characteristics of malignant germ cell tumors of ovary. Methods: Thirty five patients who were dignosed as malignant germ cell tumors of ovary and treated in Cheil General Hospital from January 1995 to December 2003, were retrospectively analyzed. The age, chief complaints, histologic type, tumor marker, FIGO stage, maximal tumor diameter, management, survival and future pregnancy outcome were reviewed. Results: The mean age was 23.4 years (8-34) and 2 patients were premenarche. The mean follow-up period was 59.6 months (16-118). Palpable lower abdominal mass and pain were the most frequent symptoms. Preoperative CA125 were checked in 32 patients and elevated in 23 patients. The tumors were ranging from 7cm to 27cm in diameter (mean : 16.6). The site of tumors was right-sided in 17(48.6%), left-sided in 15(42.9%), and bilateral in 3(8.6%) which were dysgerminomas only. Post-surgical FIGO stage was stage I in 28 cases (80.0%), stage II in 4 cases (11.4%), and stage III in 3 cases (8.6%). Histologically, immature teratomas were found most frequently (n=14, 40.0%), followed by dysgerminoma (n=10, 28.6%), endodermal sinus tumor (n=9, 25.7%), and mixed form (n=2, 5.7%). Unilateral salpingo-oophorectomy was performed in 9, cystectomy in 4, and staging operation in 22, which included 16 patients of fertility sparing operation. Postoperative chemotherapy was administered in 30 and most were BEP except one TIP. Two patients had recurred, who were stage Ic and IIIb EST at diagnosis and expired at 59 and 16 months after first operation. Recurrence rate was 5.7% and 5-year survival rate was 94.7%. During follow-up period, 8 patients were pregnant and the results were 4 normal deliveries at term, 1 missed abortion, 1 therapeutic abortion due to acne medication, 1 H-mole and 1 current pregnant state at 20 weeks without problem. Conclusion: These results shows that most malignant germ cell tumors of ovary is detected in early stage and have relatively excellent survival with conservative operation and combination chemotherapy.