허브경쟁력 강화를 위한 해외 저가항공사 터미널(LCCT) 활용 사례연구

황성연,김종현,박성식,김기웅,Hwang, Sung-Youn,Kim, Jong-Hyun,Park, Sung-Sik,Kim, Kee-Woong 한국항공운항학회 2014 한국항공운항학회지 Vol.22 No.4

Low Cost Carrier(LCC)s in Asia Pacific market are expected to record high growth due to the expansion of Open Sky Policy among Korea, Japan, China and South East Asia. As everybody is aware of, LCC is not only saving flight cost but also creates differentiating business model by reducing unnecessary services such as F&B and in-flight duty free sales services. Booming LCCs in Asian market will cause not only Incheon airport but also other local airports in Korea to compete heavily to attract LCCs. For example, Air Asia Group with more than 200 fleet has expanded its alliance network throughout Asia. Therefore this paper has researched a new business model operating a LCC terminal for the hub airport competitiveness. According to analysis result of case study, it was found out, considering increasing airline demand next decade, Incheon airport and other domestic airports in Korea had better change an existing terminal into a LCC Terminal(LCCT) to differentiate airport services and expand its hub network. That is because of economic feasibility, first of all, of securing hub and spoke networking capabilities with airlines and finally of developing commercial facilities customizing LCC passengers' demand.

혈역학적으로 안정된 복부둔상환자에서 FAST의 유용성 평가

하상현 ( Sang Hyun Ha ),홍종근 ( Chong Kun Hong ),이준호 ( Jun Ho Lee ),황성연 ( Seong Youn Hwang ),최성희 ( Seong Hee Choi ) 대한외상학회 2012 大韓外傷學會誌 Vol.25 No.3

Purpose: Focused Assessment with Sonography for Trauma (FAST) provides an important initial screening examination in adult trauma patients. However, due to its low sensitivity, FAST is not a replacement for computed tomography (CT) in hemodynamically stable trauma patients. The aim of this study was to determine the test characteristics of FAST in adult, hemodynamically stable, blunt abdominal trauma patients by using a critical action as a reference standard. Methods: The medical records for FAST examination at a single hospital from January 2009 to February 2011 were retrospectively reviewed. The inclusion criterion was isolated, hemodynamically stable, blunt abdominal trauma. Hemodynamically unstable patients or patients with penetrating injuries were excluded. The reference standard was the presence of a critical action, which was defined as one of the following: 1) operative intervention for a finding discovered on CT, 2) interventional radiology for bleeding, 3) transfusion of 2 or more packed RBCs, or 4) death at the emergency department.Results: There were 230 patients who met the inclusion criterion. There were 20 true positive, 206 true negative, 0 false positive, and 4 false negative results. The sensitivity and the specificity were 83% and 100%, respectively. Conclusion: Despite its low sensitivity for detecting any abnormal finding discovered on CT, negative FAST could aid to exclude critical action in hemodynamically stable, blunt abdominal trauma patients. (J Korean Soc Traumatol 2012;25:67-71)

육계 에탄올 추출물이 HT-29 대장암 세포주의 성장 및 COX-2 기전에 미치는 영향

이승연(Seung Youn Lee),김희석(Hee Seok Kim),김정옥(Jeoung Ok Kim),황성완(Sung Wan Hwang),황성연(Sung Yeoun Hwang) 한국식품영양과학회 2006 한국식품영양과학회지 Vol.35 No.9

육계 추출물의 대장암 세포에 미치는 영향을 HT-29 인체 결장암 세포주를 이용하여 조사하였다. 육계 추출물은 대장 정상세포인 CCD-112CoN의 성장에는 크게 영향을 미치지 않았으나, 대장암 세포인 HT-29의 성장은 농도, 시간에 의존적으로 크게 억제하였고, 대장암의 진행 과정에서 매우 중요한 COX-2 mRNA 발현량 및 PGE₂ 생성, cGMP 생성을 농도 의존적으로 억제하였다. 이상의 결과에서 육계 추출물은 정상세포에는 독성 없이 대장암 세포의 COX-2 및 PGE₂, cGMP 생성을 억제함으로써 결과적으로 대장암 세포의 성장을 감소시킨 것으로 판단된다. 따라서 육계는 부작용이 없는 대장암 예방 건강 보조식품으로서 개발 가능성이 있으며, 암세포 사멸에 대한 더욱 정확한 작용기전의 규명과 활성성분의 분리 및 정제, 응용법 등의 연구가 필요할 것으로 사료된다. The effect of cinnamon ethanol extract (CN) on HT-29 cancer cell line has been examined. CN inhibited the growth of HT-29 colon cancer cells in a concentration- and time-dependent manner but not the growth of CCD-112CoN normal colon cells. And CN markedly inhibited the production of PGE₂ and cGMP as well as the mRNA expression of COX-2. These data suggest that non-toxic concentration of CN has a significant inhibition effect on the growth of HT-29 cells, probably through the inhibition of PGE₂ production via COX-2 inhibition, and may have value as a safe chemopreventive agent for colon cancer.

하이드록시프로필화 쌀 전분의 이화학적 특성

최현욱,구혜진,김종태,황성연,김동섭,최성원,허남윤,백무열,Choi, Hyun-Wook,Koo, Hye-Jin,Kim, Chong-Tai,Hwang, Seong-Yun,Kim, Dong-Seob,Choi, Sung-Won,Hur, Nam-Youn,Baik, Moo-Yeol 한국식품과학회 2005 한국식품과학회지 Vol.37 No.1

쌀 전분에 propylene oxide(PO)를 단계별(전분 공형분 대비 2-12%)로 20시간과 24시간 반응시켜 하이드록시프로필화 쌀 전분을 제조하고, 변성된 쌀 전분의 용해도, 팽윤력, RVA, DSC 특성을 연구하였다. 팽윤력은 일반 쌀 전분 보다 낮은 온도에서 증가되기 시작하였으나 높은 경향을 보였으며, 하이드록시프로필화 쌀 전분이 일반 쌀 전분보다 완만한 상승을 나타내었다. 용해도는 하이드록시프로필화 쌀 전분이 일반 쌀 전분보다 낮은 결과를 나타내었고 PO 함량이 높을수록 높아지는 결과를 보였다. RVA 분석결과 PO 함량이 높을수록 pasting temperature와 peak time이 낮아졌고 최고 점도는 하이드록시프로필화 쌀 전분이 일반 쌀 전분보다 낮고 holding strength는 높은 경향을 나타내고 breakdown의 경우 반응시간이 24시간이 20시간보다 낮은 경향을 보였으며 Setback은 24시간 반응시킨 처리구들이 일반 쌀 전분보다 낮은 것으로 나타났다. DSC분석결과 PO 함량이 높을수록 To, Tp, Tc, ${\Dalta}H$가 감소하였다. 따라서 하이드록시프로필화 쌀 전분의 경우 전분입자내의 intemal bond가 하이드록시프로필기에 의해 약해져서 호화가 쉽게, 즉 낮은 온도에서 일어나는 것으로 판단되었고 최대 팽윤력, breakdown에서 옥수수 전분과는 다른 결과를 나타내어 전분의 종류에 따라 같은 변성 처리라고 하더라도 다른 결과를 나타낼 수 있다는 사실이 확인되었다. Physicochemical properties of hydroxypropylated rice starches were investigated. Swelling power of hydroxypropylated rice starch increased at relatively lower temperature than native rice starch. Solubility of hydroxypropylated rice starch was lower (1.9-13.4%) than that of native rice starch (2.2-13.8%), and increased with increasing amount of propylene oxide. Pasting temperature ($66.2-70.8^{\circ}C$) and peak viscosity (2,843-3,395cp) of hydroxypropylated rice starch were lower than those of native starch ($71.6^{\circ}C,\;3,976\;cp$) and decreased with increasing amount of propylene oxide, regardless of reaction time. DSC thermal transitions of hydroxypropylated rice starches shifted toward lower temperature. Amylopectin-melting enthalpy of hydroxypropylated rice starch decreased (11.8-9.8J/g) with increasing amount of propylene oxide and was lower than that of native starch (11.9 J/g). These results indicate hydroxypropylation lowered swelling power and gelatinization temperatures of rice starch, because internal bonds of rice starch molecules were sterically weaken by substituted hydroxypropyl groups.

경증 두부 외상을 가진 환자의 경추 손상을 예측할 수 있는 관련 인자

박철우 ( Chul Woo Park ),성애진 ( Ae Jin Sung ),이준호 ( Jun Ho Lee ),황성연 ( Seong Youn Hwang ) 대한외상학회 2009 大韓外傷學會誌 Vol.22 No.2

Purpose: This study aimed to determine new criteria for detecting independent factors with high sensitivity in cases of cervical spine injury. We compared the sensitivity, the specificity, and the false negative predictive value (NPV) of plain radiographs with those of computed tomography for cervical spine injury in patients with minor head injury. Methods: We retrospectively reviewed the cases of 357 patients who underwent both cervical plain radiographs and computer tomography from January 2006, to September 2008. Patients were divided into two groups: the cervical spine injury group and the no cervical spine injury group. New criteria were organized based on variables that had significant differences in the logistic regression test. Results: Among the 357 patients, 78 patients had cervical spine injuries. The average age was 43.9±15.2 yrs old, and the male-to-female ratio was 1.90. The most common mechanism of injury was motor vehicle accidents. There was a significant difference in loss of consciousness, Glasgow Coma Scale (GCS)=14, neurologic deficit, posterior neck tenderness, and abnormality of the cervical plain radiographs between the two groups on the logistic regression test. New criteria included the above five variables. If a patient has at least variable, the area under the ROC curve of the new criteria was 0.850, and the sensitivity and the false NPV were 87.2% and 5.2%, respectively. Conclusion: New criteria included loss of consciousness, GCS=14, neurologic deficit, posterior neck tenderness, and abnormality of the cervical plain radiographs. If the patient had at least 1 variable, he or she could have a of cervical spine injury with a sensitivity of 87.2% and a false NPV of 5.2%. (J Korean Soc Traumatol 2009;22:154-60)

A Study on Images of Korea in the Arab : 아랍에서 한국의 이미지 연구

Lee In-Seop(이인섭),Kim Neung-Woo(김능우),Yu Hong-Sik(유홍식),Youn Yong-Su(윤용수),Chang Se-Won(장세원),Hwang Sung-Yon(황성연) 한국중동학회 2007 韓國 中東 學會 論叢 Vol.27 No.2

본 연구는 고대 신라시대부터 교역을 시작하여 오랜 교류의 역사를 가짐에도 불구하고 상대적으로 학문적 영역에서 관심을 기울이지 못한 중동지역을 대상으로 하고 있다. 2003년 발발한 이라크전쟁은 이 지역에 대한 다양한 관심을 불러일으키고 있다. 한국이 미국의 요청으로 3천명 이상의 병력을 이라크에 파견하고 있기 때문이다. 따라서 본 연구는 이라크전 이후 중동 미디어들과 중동인들이 한국을 어떻게 생각하고 평가하고 있는지를 알아보고자 5개국(이집트, 이라크, 레바논, 요르단, 아랍 에미리트)을 선정하여 설문조사를 실시하였다. 조사결과, 이들 국가에서 응답자들이 가장 많이 이용하는 미디어와 한국에 대한 뉴스를 가장 많이 접하는 미디어는 텔레비전인 것으로 나타났다. 그 다음으로는 신문과 인터넷으로 나타났지만, 텔레비전과는 현격한 차이를 보였다. 응답자들은 텔레비전을 통해 한국과 관련된 뉴스보다는 일본과 중국과 관련된 뉴스를 더 많이 접하는 것으로 나타났다. 많은 응답자들이 한국산 제품을 접한 것으로 나타났으며, 한국산 제품에 더 만족도 높은 사람들일수록 한국을 긍정적으로 평가하는 것으로 분석되었다. 응답자들은 중동지역의 신문들이 한국에 대해 우호적인 시각을 지니고 있는 것으로 평가하였으며, 이러한 중동지역 신문들의 시각은 중동지역 사람들에게 한국에 대한 긍정적 이미지를 형성하는데 영향을 주는 것으로 나타났다. 한국과 미국과의 관계에 대해 요르단, 레바논 응답자들은 다소 종속적인 관계로, 이라크와 아랍 에미리트 응답자들은 동반자적/우호적 관계로 평가하였다. 한국의 이라크 파병에 대해 이라크 응답자들을 제외한 다른 국가들의 응답자들은 다소 긍정적으로 평가하였으며, 대부분의 응답자들은 자국의 미디어들이 한국의 이라크파병에 대해 다소 긍정적인 보도를 하고 있는 것으로 평가하였다. 하지만, 응답자들은 파병한국군이 미군과 함께 전투 활동을 벌이고 있다고 잘못 인식하거나, 파병활동을 전혀 알지 못하고 있는 것으로 나타났다.

論文(논문) : 국제항공 기후변화 관련 국제동향과 항공 배출가스 계산방법의 개선에 관한 연구

이근영 ( Gun Young Lee ),유광의 ( Kwang Eui Yoo ),황성연 ( Sung Youn Hwang ) 한국항공운항학회 2013 한국항공운항학회지 Vol.21 No.2

The introduction of aviation into the EU-ETS has faced significant opposition from many ICAO member States. Accordingly a global solution through ICAO is in progress. This paper traces the progress of works done by the HGCC in the area of global aviation aspiration goals aiming for the submission to the 38th Session of the ICAO Assembly. Furthermore, devices for calculating the carbon dioxide emissions from flights have been developed by several agencies including international organizations, governments, airlines and nongovernmental organizations. These carbon calculators, however, introduce too many assumptions to simplify the calculation process. This study assesses carbon calculators for aviation emissions and suggests a modified calculation methodology using the pre-existing computer reservation system for better accuracy.

인천공항의 LCC 허브 경쟁력 강화를 위한 LCCT 도입 전략에 대한 연구

김종현 ( Jong Hyeon Kim ),윤영표 ( Young Pyo Yoon ),황성연 ( Sung Youn Hwang ) 한국항공경영학회 2011 한국항공경영학회 춘계학술대회 Vol.2011 No.-

Low Cost Carrier(LCC)s in Asian·Pacific market are expected to record high growth due to the expansion of Open Sky Policy among Korea, Japan and China. Booming LCCs in Asian market will cause not only Incheon airport but also other local airports in Korea to compete heavily to attract LCCs. This paper researches a new business model operating a LCC terminal to be a competitiveness hub port. According to analysis result, it is found out, considering increasing airline demand in 2023 the airport had better change ``Concourse A`` serving Full Service Carrier(FSC) into LCC Terminal(LCCT) to differentiate airport services. That is firstly because of economic feasibility, secondly of securing networking capabilities with airlines and finally of developing commercial facilities customizing passengers` needs.

이라크 파병이 "한국이미지"에 미친 영향에 관한 연구 : 중동지역 5개국을 중심으로

이인섭 ( In Seop Lee ),유홍식 ( Hong Sik Yu ),김능우 ( Neung Woo Kim ),윤용수 ( Yong Su Youn ),장세원 ( Se Won Chang ),황성연 ( Sung Yon Hwang ) 부산외국어대학교 지중해연구소 2006 지중해지역연구 Vol.8 No.2

This study explored whether the dispatch of Korean troops to Iraq had detrimental influences on image of Korea. In addition, the study examined whether the attitudes of Arab media in dealing with Korea- related issues played an important role in shaping Arab people`s attitude toward Korea and image of Korea. Data collected at the 5 Arab countries(Egypt, Iraq, Lebanon, Jordan, & Arab Emirate) from June 2005 to August 2005. The results showed that the respondents of the countries, especially the ones of Arab Emirate, had a good impression on image of Korea. The comparative analysis of South Korea, Japan, China, and North Korea on image of country was conducted. The results revealed that Japan had the best image, and China had the second best image. The image of South Korea was recognized at the third place. The Arab respondents, who thought that Korea sent their troops to Iraq for getting any kinds of profits in relations to America, showed lower scores on image of Korea. Although Arab media didn`t cover Korea-related news much, the Arab respondents` perception toward the attitude of the Arab media in dealing with Korea-related issues and image of Korea had a positive correlation. The third person effects was also identified. Findings are discussed in relations to third person effect theory, public relations and image of country.

외상환자의 중증도분류를 위한 Triage Score와 Triage-Revised Trauma Score의 비교

조광원,황성연,배성만 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: The triage-revised trauma score(t-RTS) is used for triage in trauma patients in many countries. Recently, the triage score was developed as a new triage method for trauma patients in Korea. The objective of this study was to assess the accuracy of triage for the t-RTS and the triage score. Methods: The medical records of 1575 consecutive trauma patients visiting the Emergency Center, Masan Samsung Hospital, from March to August 1999 were retrospectively analyzed. The triage score and the t-RTS were taken from the charts completed by the emrgency room doctors and nurses. The accuracies of the two triage methods were compared by using the undertriage and the overtriage rates, receiver operating characteristic(ROC) curve analysis, and a correlation analysis with many physiologic, anatomical, biochemical, and mixed scores(Glasgow coma scale, injury severity score, TRISS, APACHE II and III scores, operation, survival, etc.). Results: The undertriage rates for the triage score and the t-RTS were 22.8% and 38.2%, respectively(p≤0.001), the overtriage rates were 6.3% and 3.1%, respectively,(p≤0.001), and the accurate triage rates were 91.3% and 91.7%, respectively. The areas under ROC curves for the triage score and the t-RTS were 0.871±0.033 and 0.800±0.039, respectively(95% confidence interval, p<0.001). In general, the correlations of the two triage methods with many physiologic, anatomical, biochemical, and mixed scores were moderately high, but there were no statistical differences between the correlation coefficients of the two triage methods for those scores. Conclusion: The triage score was equal or superior to the t-RTS for triage in trauma patients. The former was simpler and could be used easily by emergency medical personnel. Therefore, the authors conclude that the triage score can be used instead of the t-RTS for triage in trauma patients.