고등훈련기(T-50)의 시장지향적 수출 전략에 관한 연구

전지현,서영진,정다은,조현진,이상학,Jeon, Ji-hyun,Suh, Young-jin,Jung, Da-eun,Cho, Hyun-jin,Lee, Sanghak 한국항공운항학회 2020 한국항공운항학회지 Vol.28 No.1

This research investigates the export strategy for pioneering a new market of Advanced Pilot Trainer T-50, a business unit of KAI company, and increasing its market share. The export strategy is proposed based on the Corporate Marketing Model along with the market oriented concept. Specific sales strategies are extracted in consideration of product analysis, market analysis, and integration of product and target market. Therefore, six countries in Africa are selected as the primary target markets on account of their market potentials. In addition, T-50 is repositioned to 'T-50Af' as 'high price competitive and multi-role trainer.' The business implications include the expansion of the market in Africa and the pursuit of the consistent development and growth of T-50.

Reviewing the Effects of Age on L2 Pronunciation

Jeon Jihyun(전지현) 새한영어영문학회 2010 새한영어영문학 Vol.52 No.4

It was observed that young L2 learners have biological advantages over late learners for L2 language pronunciation under the CPH. According to this CPH, it is impossible to naturally and effortlessly acquire a native fluency of language in pronunciation after puberty because the human brain is biologically programmed to lose the plasticity necessary for language acquisition. However, it was also observed that there are numerous studies reporting late learners outperforming younger learners in L2 pronunciation. Although the degree of achievement might vary, studies showed that several variables such as degrees of L1 use, motivation, etc. could enhance late learners’ performance in L2 pronunciation with intensive training. Brief pedagogical implications from the findings of these research studies are provided.

암 환자의 혈장 Transforming Growth Factor-β1 농도

전지현(Ji-Hyun Jeon),이시은(Si-Eun Lee),이수진(Sue-Jin Lee),박찬후(Chan-Hoo Park),장정순(Joung Soon Jang),하우송(Woo Song Ha),박순태(Soon Tae Park),박병규(Byung-Kiu Park) 대한의생명과학회 1999 Biomedical Science Letters Vol.5 No.2

한국인의 대표적인 성인 고형 종양인 위암, 간암, 유방암과 소아 백혈병 및 2종의 소아 고형 종양 환자로부터 혈장 transforming growth factor-β1 (TGF-β1) 농도를 sandwich ELISA 분석법을 이용해 측정함으로써 TGF-β1을 이 질환들에 대한 새로운 종양표지자 (tumor marker)로 사용할 수 있는지 검토하였다. 또한 연령 및 성별에 따른 혈장 TGF-β1 농도의 정상치를 조사하였다. 신생아에서 70대까지 혈장 TGF-β1 농도의 차이는 없었고 남녀간의 차이도 없었다. 위암 환자의 혈장 TGF-β1 농도는 16.0±6.8 ng/㎖ (평균±표준편차)로 정상 대조군의 TGF-β1 농도 (8.3±5.0 ng/㎖) 보다 유의하게 높았으나 간암, 유방암 환자의 혈장 TGF-β1 농도는 대조군과 차이가 없었다. 그리고 위암 환자 16명, 간암 환자 8명, 유방암 환자 7명 중 각각 7명 (43.7%), 1명 (12.5%), 1명 (14.3%)에서만 혈장 TGF-β1 농도가 증가되었다. 5명의 소아 백혈병 환자에서는 관해 (remission) 여부와 상관없이 혈장 TGF-β1 농도가 모두 정상 범위에 있었으나 2명의 소아 고형암 환자에서는 종양 절제 전에는 혈장 TGF-β1 농도가 높았다가 절제 후 정상으로 떨어졌다. 결론적으로 1) 정상인의 혈장 TGF-β1 농도는 연령 및 성별에 따른 차이가 없다는 것을 알 수 있었고, 2) 성인 고형암인 위암, 간암, 유방암에서는 낮은 민감도로 인해 TGF-β1을 진단을 위한 선별 검사로 이용하기에는 부적절한 것으로 판단되었으며, 3) 정상 대조군보다 혈장 TGF-β1 농도가 높았던 위암 환자와 종양 절제 전후로 혈장 TGF-β1 농도가 민감하게 변했던 소아 고형암 환자에 대해서는 향후 표본 수를 늘려 부가적인 연구를 해야 할 것으로 사료된다. To evaluate the usefulness of transforming growth factor-β1 (TGF-β1) as a new tumor marker, we determined the plasma TGF-β1 levels using sandwich ELISA assay in cancer patients. Patients with three most common adult cancers in Korea (stomach, liver and breast cancer) and children's cancers (leukemia and two kinds of solid tumor) were enrolled for the study. Furthermore, 39 individuals were subjected to age and sex-stratified plasma TGF-β1 analysis. No statistical difference was demonstrated with respect to age or sex. The mean plasma TGF-β1 level (16.0 ng/㎖) of stomach cancer patients was significantly higher than that (8.3 ng/㎖) of controls. However, there was no difference among the mean plasma TGF-β1 levels of liver, breast cancer patients and controls. Seven of 16 patients (43.7%) with stomach cancer, one of 8 (12.5%) with liver cancer, and one of 7 (14.3%) with breast cancer showed higher TGF-β1 levels compared to controls. Plasma TGF-β1 concentrations of five leukemic children remained in the normal range regardless of the remission state. In contrast, initial high TGF-β1 levels from two children with solid tumors returned to normal range on surgical resection of tumors. From the above results, we could conclude that plasma TGF-β1 levels of apparently healthy individuals seem to be rather constant irrespective of difference in age or sex, and the plasma TGF-β1 has the limited value as a screening test for the diagnosis of aforementioned adult cancers because of its low sensitivity. Finally, additional studies need to be pursed for the large number of stomach cancer and pediatric solid tumor patients in order to reach a secure conclusion on the usefulness of plasma TGF-β1 as a tumor marker in these patients.

의사소통 중심의 영어교육을 위한 주요 이슈

전지현(Jeon, Jihyeon) 한국응용언어학회 1997 응용 언어학 Vol.13 No.1

웹기반 영어 학습에 있어서의 학습자 지원에 관한 연구

전지현(Jeon Ji-Hyeon),정주영(Jeong Ju-Young) 한국비서학회 2004 비서·사무경영연구 Vol.13 No.2

웹기반 교수학습에서 학습자지원의 중요성은 반복적으로 제기되고 있으나, 어떠한 학습자 지원이 필요한 지에 대한 실증적인 연구는 부족하다. 특히, 현채 제공되고 있는 웹기반 학습의 많은 부분을 차지하고 있는 웹기반 영어 학습에 대한 학습자 지원에 대한 연구는 더더욱 찾아보기 힘들다. 본 연구는 웹기반 영어 학습을 경험한 학습자를 대상으로 비구조화된 인터뷰를 실시하여 웹기반 영어 학습을 지속이 가능토록 하는 학습자 지원방법을 파악함을 목표로 한다. 웹기반 영어 학습을 경험한 대학생과 직장인 100명을 대상으로 온라인 영어 학습시 제공되기를 희망하는 온라인 및 오프라인 지원방법을 혼합형 면접설문지를 사용하여 인터뷰하였고, 그 결과는 질적 데이터 분석도구인 NUD*IST를 사용하여 내용 분석하였다. 분석결과 학습자들이 필요로 하는 상위 다섯 가지의 온라인 지원 방법은 인센티브의 도입, 강의내용의 충실화, 학습현황 관리, 학습참여 유도, 저장/사전 등의 보조적 기능의 제공, 테스트의 적절한 사용 등으로 파악되었다. 상위 다섯 가지의 오프라인 지원 방법은 학습자료/정보의 제공, 학습에 대한 전화관리, 학습자 모임제공, 스터디 그룹의 조성, 교수자와 학습자 모임제공으로 파악되었다. 학습자의 관점에서의 학습자 지원을 파악하여 온라인으로 제공되는 교육에 잘 활용한다면 면대면 교육과 온라인 교육의 장점을 갖춘 양질의 교육제공이 가능할 것이다. 컴퓨터를 활용하기 용이한 비서직 근무자들에게 학습자 지원이 강화된 온라인 교육이 제공된다면 큰 교육효과를 기대해 볼 수 있다. While there has been frequent discussion on learner support in the literature on web-based education, there has not been much empirical studies on this topic. Learner support is essential for a successful web-based learning because it makes learners actively involved in the learning process. Considering the popularity of on-line English studies, it would be particularly important to identify what supports learners need in participating on-line English studies. The purpose of this study was to find out ways to support learners in order to continue their on-line English studies. One hundred college students and office workers participated for the current study. The participants were contacted through the snowball sampling method, and were asked to express their on-line and off-line needs in order to continue on-line English studies. Interviews were conducted to collect the responses from the participants. The data were then analyzed qualitatively using NUD*IST, a tool for analyzing qualitative research data. Within the limitation of methodologies, the study is expected to contribute to understanding the role of learner support in the web-based instruction and to promote further research in the field.

바람길 조성을 위한 도시미기후 측정 분석

전지현(Jeon Ji-Hyeon),박성봉(Park Seok-Bong) 한국태양에너지학회 2005 한국태양에너지학회 논문집 Vol.25 No.4

광주광역시 용도지역별 하계 기온 측정 및 분석

전지현(Jeon, Ji-Hyeon),박석봉(Park, Suk-Bong) 대한건축학회 2016 대한건축학회 학술발표대회 논문집 Vol.36 No.2

광주광역시 하계 기온 측정을 통한 도시열섬 현황 파악

전지현(Jeon, Ji-Hyeon),박석봉(Park, Suk-Bong) 대한건축학회 2017 大韓建築學會論文集 : 構造系 Vol.33 No.8

Every city should have its own step to solve urban heat island effect in accordance with the atmosphere it has. Because urban heat island effect can be seen as the heat pollution relevant to atmosphere of the city. Thus, the analysis of factors which have influence on thermal environment of the city and the effect of those is essential. In this study, the city was classified by six zones; residential area, commercial area, manufacturing area, park, green area, Gwangju Greenway, and Gwangju River. Temperature record conducted on 55 spot during before sunrise (05:00~06:00), afternoon (14:30~15:00), and after sunset (20:30~21:00). The results are listed as follows; 1) Nearby green area; the temperature before sunrise was relatively lower than others which means, green area can be helpful to drop the temperature of the area at night. 2) green area nearby paved road or building area; the temperature after noon was higher than others which means, the temperature was influenced by the vehicle exhaust and radiant heat of the buildings. 3) park and green area; the temperature of every spot was different in accordance with the size of the green area, planting density of trees and ground condition. 4) Gwangju Greenway; the characteristic of the temperature was similar with park and green area. However, the fact that the temperature of Gwangju Greenway, which had more dense trees, was lower than park and green area in the afternoon showed that the shading of street trees had outstanding effect on lowering temperature on the street in the afternoon. 5) Gwangju River; the temperature was lower than all the other spots before sunrise and after sunset. It is assumed that the river had the most contribution to control rising temperature of the city even though it still had influenced by solar radiation, radiant heat of the buildings, vehicle exhaust, and so on. 6) Road; the temperature before sunrise was relatively higher than other spots which means heat storage on the road had influenced the rise in temperature in the night. These results showed that there is density of trees shading the ground and Gwangju River; which is the wind road of the city, at the center of the solution of the heat island effect in Gwangju.

WBT를 활용한 전문영어(ESP) 교수를 위한 기초연구

전지현(Jihyeon Jeon) 한국비서학회 2001 비서·사무경영연구 Vol.10 No.2

The proliferation of Internet has created fast growing electronic channels for language learning. Due to the nature of electronic channels, however, not all language education services are satisfying for language learning, The purpose of this study is to explore Korean college students' affective experiences of on-line English language learning and to suggest steps to develop an effective WBT program in ESP. Variables related to on-line language learning experience were first collected using an open-ended questionnaire. Based on the key words obtained from the initial analyses, a structured questionnaire was constructed. Internal reliabilities were also assessed of the factors included in the instrument. Participants were asked to rate the service quality that they minimally require, the service quality that they currently experience, and the service quality they want at the maximum level. Top five and low five items were compared on participants' ratings of minimum required service quality, current service quality, and maximum service quality. In addition, stepwise multiple regression analysis was performed to find out significant affecting factor on learner's satisfaction on the current service quality. Findings are discussed in light of developing an effective WBT program in ESP.

영어 말하기 평가에 대한 학습자 인식 연구

전지현(Jeon, Jihyeon),김종국(번역자),김현주(Kim Hyunju),신동일(Shin, Dongil),이병민(Lee, Byungmin) 한국응용언어학회 2010 응용 언어학 Vol.26 No.1

The purpose of this study is to investigate learners’ perceptions on English speaking assessment. Through the online survey, the researchers collected data from 742 adult online English learners and personal administrators in various companies. The survey consisted of two sections: participants’ general background infon11ation and their perceptions on English speaking assessment.. The items on the perceptions are categorized into 7 areas: belief. operation time, test impact. rating criteria, test method, feedback. and preparation of speaking tests. TIesull.s of the study showed that leamers generally believed that although the English speaking assessment is more valid than other English proficiency tests. it should assess more pragmatic language com]X~tence and provide more detailed infom1ation about rating clitelia and evaluation procedures to both test users and test. takers. Based on the findings. the study concludes with some implications in terms of improving English speaking assessment and directing future English proficiency movement.