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최찬문 ( Chan Moon Choi ),이창헌 ( Chang Heon Lee ),김병엽 ( Byung Yeob Kim ),안장영 ( Jang Young Ahn ),김석종 ( Seok Jong Kim ),중광율남 ( Ritsuo Shigehiro ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.1
In order to deduce an objective evaluation method of motion seasickness incidence (MSI) by ship motions during underway in irregular waves and to present the fundamental data of passenger comfort on the yacht and the passenger ship according to the result, the MSI of the trainees by the questionnaires was analysed and compared with the rate of variation of salivary α-amylase activity (VSAA) on the training ship A-ra ho of Jeju national university. Relationship between rate of variation (x)by salivary α-amylase activity and motion seasickness incidence (y) was described by the equation, MSI(%) = 0.6073 x +12.189 including the correlation coefficient (R2= 0.9853). The result obtained through the rate of variation of salivary α-amylase activity which was the quantitative evaluation method for ship motions causing seasickness was most affected by z-vertical acceleration and occurred within the frequency range 0.1 to 0.3Hz centered on 0.2Hz, and the simulation result based on this finding showed the motion seasickness rate at approximately 4% lower than the rate obtained through the survey.
‘에스닉영화’로서의 한국영화의 흐름과 포스트식민시대의 나아갈 길
최예솔,오종진 글로벌문화콘텐츠학회 2016 글로벌문화콘텐츠학회 학술대회 Vol.2016 No.1
영화는 제한된 러닝타임과 비교적 복잡한 소비과정, 철저한 등급제 운영과정 등 그 콘텐츠 특성상 내러티브 속에 다양한 상징체계가 구현되기에 충분하다. 할리우드 영화산업을 중심으로 영화의 상업성은 계속하여 성장하는 동시에 장르와 표현상의 다양화를 이루며 예술성도 강화되고 있다. 상업영화와 예술영화를 구분하는 것이 점차 의미를 잃을 만큼 영화콘텐츠의 서사에는 사회적 담론과 정체성 고민 등 무거운 주제도 담기고 있다. 한국은 부산국제영화제 등 유수의 국제영화제를 개최하는 동시에 세계 3위 규모의 영화시장을 성장시키면서 꾸준히 영화콘텐츠의 강국으로 성장해왔다. 이제 한국영화가 가진 정체성의 고민은 영화연구의 한 맥락이 아니라 지속가능한 영화콘텐츠의 성장을 위한 필수가 되었다. 식민지배와 비민주사회를 경험한 한국의 경우, 경제적 비평등과 권위주의, 여성을 비롯한 사회적 소수자에 대한 보수적 시각 등은 사회 전반적으로 깊이 뿌리내리고 있다. 문화콘텐츠가 사회적 현실과 괴리된 채 텍스트 그 자체로만 해석될 수 없다는 점을 생각했을 때, 이러한 사회적 고민과 담론들이 콘텐츠 수용과 해석 과정에서 고려되어야 함은 자명해 보인다. 그럼에도 지역 정체성과 세계화를 아우르는 글로컬리즘(glocalism)적 콘텐츠 연구는 미흡하였다. 영화 콘텐츠를 읽는 과정에서 한국사회가 가진 문화적 정체성과 지역적 특수성을 결합하는 시도 또한 마찬가지다. 본고는 한국영화의 민족영화적 정체성과 포스트식민시대의 한국영화의 주체성에 대해 이야기한다. 식민지배 후반기 한국의 영화인들에 의해 제작되었던 친일영화에서 시작하여, 사회운동이 꽃피우던 시절 젊은 영화인들을 중심으로 발달했던 민족영화 등 에스닉영화(민족영화)로서의 한국영화의 흐름을 통시적으로 짚어본다. 전 지구적 흐름에 따라 한국영화계가 할리우드영화의 영향력 하에 놓이게 된 시기 속 ‘한국형 블록버스터’의 탄생을 통해 한국영화 속 탈식민주의를 고민해보고, 이를 한국영화의 현 주소와 연결 짓는 작업을 통해 포스트식민시대 한국영화의 비판점과 나아갈 점에 대해 생각해본다.
안장영(Jang-Young AHN),김석종(Seok-Jong KIM),최찬문(Chan-Moon CHOI),박용석(Young-Seok PARK),이창헌(Chang-Heon LEE) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.2
The purpose of this paper is to improve the availability of underwater sound by the fundamental data on the hearing ability of Redlip croaker Pseudosciaena polyactis, which is cultured according to the cultivation technology, recently. The auditory thresholds of Redlip croaker were determined at 6 frequencies from 80Hz to 800Hz by heartbeat conditioning method using pure tones coupled with a delayed electric shock. The audible range of the Redlip croaker extended from 80Hz to 800Hz with the best sensitive frequency range including little difference in hearing ability from 80Hz to 500Hz. In addition, the auditory thresholds over 800Hz increased rapidly. The mean auditory thresholds of the Redlip croaker at the test frequencies from 80Hz to 800Hz were 90.7dB, 93.4dB, 92.9dB, 94.4dB, 95.5dB and 108dB, respectively. Auditory masking for the redlip croaker was measured using masking stimuli with the spectrum level range of about 66, 71, 75dB (0dB re 1µPa/√Hz ). According to white noise level, the auditory thresholds increased as compared with thresholds in a quiet background noise. The Auditory masking by the white noise spectrum level was stared over about 70dB within 80~500Hz. Critical ratio ranged from minimum 20.7dB to maximum 25.5dB at test frequencies of 80Hz~500Hz.
이창헌 ( Chang Heon Lee ),최찬문 ( Chan Moon Choi ),안장영 ( Jang Young Ahn ),김석종 ( Seok Jong Kim ),김병엽 ( Byung Yeob Kim ),중광율남 ( Ritsuo Shigehiro ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
In this paper, the results of evaluating the passenger comfort due to the standard deviation of acceleration in vertical and lateral direction regarding the ship response in irregular wave by ordinary strip method in regular wave and energy spectrum using linear superposition theory in order to evaluate the motion of experimental ship are as follows. According to the results of ship response, it was possible to find that, in order to reduce the motion of ship, a ship operating in bow sea was more stable than in quartering sea. In the results of analyzing the standard deviation of acceleration in vertical direction according to each component wave pattern, when there was a wave length of 56m and an average wave period of 6 sec, most of cases showed the peak value. And among them, the standard deviation was 0.35 which was the highest in head sea. And in case of lateral direction, the maximum value was shown in a wave length of 100m and an average wave period of 8 sec. And it was 0.16 in beam sea and X = 150° In the evaluation of passenger comfort due to standard acceleration in vertical and lateral direction, it was 80% in head and bow sea. On the other hand, it was shown to be 15% in follow sea. Accordingly, when the expected wave height in a sea area where a training ship was intended to operate was known, it was possible to predict the routing of ship. And altering her course could reduce the passenger comfort by approximately 50%.
안장영 ( Jang Young Ahn ),박용석 ( Yong Seok Park ),최찬문 ( Chan Moon Choi ),김석종 ( Seok Jong Kim ),이창헌 ( Chang Heon Lee ) 한국어업기술학회 2012 수산해양기술연구 Vol.48 No.4
In order to obtain the fundamental data about the behavior of conger by underwater audible sound, this experiment was carried out to investigate the hearing ability of Conger eel Conger myriaster which was in the coast of Jeju Island by heartbeat conditioning method using pure tones coupled with a delayed electric shock. The audible range of conger eel extended from 50Hz to 300Hz with a peak sensitivity at 80Hz including less sensitivity over 200Hz. The mean auditory thresholds of conger eel at the frequencies of 50Hz, 80Hz, 100Hz, 200Hz and 300Hz were 105dB, 92dB, 96dB, 128dB and 140dB, respectively. The positive response of conger eel was not evident after the sound projection of over 200Hz. At the results, the sensitive frequency range of conger eel is narrow in spite of swim bladder. Auditory masking was determined for Conger eel by using masking stimuli with the spectrum level range of about 60~70dB (0dB re 1mPa/AHz ). According to white noise level, the auditory thresholds increased as compared with thresholds in a quiet background noise including critical ratio at 68dB of white noise from minimum 26dB to maximum 30dB at test frequencies of 80Hz and 100Hz. The noise spectrum level at the start of masking was distributed at the range of about 68dB within 80~100Hz.
이창헌 ( Chang-heon Lee ),안장영 ( Jang-young Ahn ),김석종 ( Suk-jong Kim ),김민선 ( Min-son Kim ),최찬문 ( Chan-moon Choi ) 한국어업기술학회 2017 수산해양기술연구 Vol.53 No.2
This study is intended to provide navigator with specific information necessary to assist in the avoidance of collision and in operation of ships to evaluate the maneuverability of research vessel Jera. Authors carried out full-scale sea trials for turning test, zig-zag test, and spiral test at actual sea-going condition, which were performed on starboard and port sides with 10-20 rudder angle at service speed of 10 knots. The turning circle was much different at both of the turning of port and starboard which was longer at the starboard than at the port. In the zig-zag test results, the port and starboard was 10˚ the first and second overshoot angles were 6.0˚, 5.8˚ and 6.3˚ , 7.1˚ respectively and the first overshoot angles were 16.4˚ , 17.6˚ when using 20˚ . Her maneuverability index T and K can be easily determined by using an analogue computer with the data obtained from the zig-zag tests where K is a constant representing the turning ability and T is a constant representing her quick response. In the zig-zag tests under 10˚ or 20˚ at rudder angle, the value K is 0.149. 0.123 sec- and T is 11.853 and 6.193 sec and angular velocity is 0.937˚ /sec and 1.636˚ /sec. In the spiral test, the loop width was unstable at +0.51˚ and -1.19˚ around the midship of rudder, but the tangent line at 0˚ was close to vertical. From the sea trial results, we found that she did comply with the present criterion in the standards of maneuverability of IMO.