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Free-standing 박막의 전계 방출 특성을 이용한 고에너지 이온 디텍터에 관한 연구
박종후(Jonghoo Park) 한국자기학회 2011 韓國磁氣學會誌 Vol.21 No.5
We describe modified Fowler-Nordheim (FN) field emission equation for the free-standing nanomembrane cathode, which has mechanical degrees of freedom. The derived FN equation agrees well with the experimental data. The free-standing nanomambrane cathode demonstrates its unique ability to detect large biomolecure ions.
박종후(Park, Jonghoo),하지경(Ha, Jikyung) 한국사전학회 2012 한국사전학 Vol.- No.20
This research aims to build practical and useful models of dictionary to help foreign learners learning Korean foreign words. Foreign words go through a morphological, syntactic, and pragmatic change when incorporated into the Korean vocabulary system. If the information is provided inaccurately, then the words will not be fully understood and used. Foreign words dictionary is needed in order to provide accurate meaning of original words to the learners. First, research investigated Korean foreign words dictionary’s problems in selection and arrangement of headwords in terms of the macro-structure. Then, we considered how to present detailed explanation, meaning, phonology, grammar, and pragmatic information of headwords in terms of microstructure. Therefore, the research recommends selecting frequently used foreign words as headwords and present appropriate examples to fill out the information gap from the changes in semantic and syntactic areas. This approach will improve learner’s ability to understand and express Korean foreign words.
일본 대학에서 비전공 한국어 과목 수강자의 수강 동기에 대한 현황과 추이
박종후 ( Park Jonghoo ),정선영 ( Jung Sunyoung ) 연세대학교 언어연구교육원 한국어학당 2019 외국어로서의 한국어교육 Vol.55 No.-
The aim of this study is to investigate the motivation of learning the Korean language for Japanese university students who do not major in Korean. In the analysis, we compared different types of motivation for the participants classified with two different variables: gender and presence of former experience in Korea-related fields. In addition, we compared this study with the 2014 survey to examine if there were any longitudinal differences. We conducted a survey with 552 students in twelve different regions in Japan. We found that most of the students who were enrolled in a non-major Korean language course had an internal motivation. Not many students, both male and female, were taking the Korean language class for a practical reason. This study also showed that those students who previously visited Korea were taking the language class with an internal motivation. Former experience in making Korean friends or learning the language did not seem to play an important role to form students’ motivation to take the Korean language class. As we compare the results of the current study and the 2014 study, it is noteworthy that external motivation has decreased and internal motivation has increased in contrast. Namely, internal motivation has become more crucial over time. The findings of this study will contribute to recalibrating the purpose of Korean language education as an elective subject in Japanese universities. (Dokkyo University · Former Yonsei KLI)
안경민(Kyoungmin Ahn),박종후(Jonghoo Park) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The latest flight control system requirements of Helicopter have been in a state of transition. Helicopter have become more requiring a management system capable of conducting highly aggressive mission and under night/adverse-weather condition in severe electromagnetic environments. The Fly-by- Wire control system is necessary to conducting these requirements. This paper outline the current status of the Fly-by-Wire system and discusses the Fly-by-Wire control actuation scheme and presents solutions to the requirements of developing a safety system.
김진원(Jinwon Kim),홍영지(Young-ji Hong),김근배(Keunbae Kim),박종후(Jonghoo Park) 한국항공우주연구원 2009 항공우주기술 Vol.8 No.2
항공기 유압펌프의 인증시험 항목 및 절차에 대하여 조사하였다. 항공기용 유압펌프는 설계 최적화를 통한 중량 최소화와 인증시험 절차가 매우 중요하다. 본 연구는 통상의 항공용 유압펌프의 기초 성능자료를 가정하고, 이를 토대로 인증시험을 실시할 경우 중요 인증시험의 절차를 제시하였다. Qualification test items and those certification procedures of aircraft hydraulic pump are investigated in this report. Weight minimization through optimal design of aircraft hydraulic pump and its certification process investigation are very important. In this report, some fundamental performance data was presumed for the normal aircraft hydraulic pump, and then basic procedures for qualification tests are presented.
HFCT를 활용한 고전압직류송전 케이블 부분방전 위치추정
홍선민 ( Seonmin Hong ),손우영 ( Wooyoung Son ),천혜원 ( Hyewon Cheon ),강대경 ( Daekyoung Kang ),박종후 ( Jonghoo Park ) 한국센서학회 2021 센서학회지 Vol.30 No.2
Detection and localization of partial discharge are considered critical techniques for estimating the lifetimes of power cables. High-frequency current transformers (HFCTs) are commonly used for the detection of partial discharge in high-voltage alternating current (HVAC) power cables; however, their applicability is compromised by the limitations of the installation locations. HFCTs are typically installed in cable terminals or insulation joint boxes because HVACs induce strong time-varying magnetic fields around the cables, saturating the ferromagnetic materials in the HFCTs. Therefore, partial discharges near the installation locations can be detected. In this study, the feasibility of partial discharge detection using a HFCT was investigated for high-voltage direct current (HVDC) cables. We demonstrated that the HFCT could be installed at any location in the HVDC power cable to monitor partial discharge along the entire cable length. Furthermore, we showed that the HFCT could detect the location of partial discharge with high accuracy.