간행물
Journal of Korean Navigation and Port Reserch KCI 등재 한국항해항만학회지
- 발행기관 한국항해항만학회
- 자료유형 학술지
- 간기 격월간
- ISSN 1598-5725 (Print)2093-8470 (Online)
- 수록기간 1977 ~ 2020
- 주제분류 농수해양 > 해상운송학 농수해양 분류의 다른 간행물
- 십진분류KDC 559DDC 629
권호리스트/논문검색
Vol.22 No.3 (1998년 9월) 8건
1.
1998.09
서비스 종료(열람 제한)
This paper describes elemental technologies for the creation of three-dimensional(3-D) sound-field to implement the next-generation Ship Handling Simulator with human -computer interaction, known as Virtual Reality. In the virtual reality system, Head-Related Transfer Functions(HRTF's) are used to generate 3-D sound environmental context. Where, the HRTF's are impulse response characterizing the acoustical transformation in a space. This work is divided into two parts, the part Ⅰis mainly for the model constructions of the HRTF's, the part Ⅱis for the control of 3-D sound-field by using the HRTF's . In this paper, as first part, we search for the theory to formulate models of the HRTF's which reduce the dimensionalityof the formulation without loss of any directional information . Using model HRTF's we report results from psychophysical tests used to asses the validity of the proposed modleing method.
2.
1998.09
서비스 종료(열람 제한)
The paper is the second part on the 3-D sound-field creation implementing the Virtual Reality Ship Handling Simyulator(VRSHS). As mentioned in the previous part Ⅰ, the spatial impression, which arose from reproduced 3-D sound-field , give natural sound environmental context to a listener. This spatial impression is due to the reverberation by reflections and ,is can be obtain by using Head-Related Transfer Function(HRTF). In this work, we foumulate early and late reverberation models of the HRTF's with theoretical control factors based on the sound-energy distribution in an irregularly shaped enclosures. Using the reverberation models, we report results from psychophysical tests used to asses the validity of the proposed 3-D soud-field control method.
3.
1998.09
서비스 종료(열람 제한)
When design the crew's living quarter, it is very important to consider the comfort for crew as well as its function. In this paper, design concepts of crew's living quarter are investigated based upon the questionnaire survey and the respondents who have been experienced going on board . Also, some improvements for interior design of the merchant ship are presented.
4.
1998.09
서비스 종료(열람 제한)
This study aims at estimating the in-and-out traffic volume and improving the main channel in Kwangyang Harbour, by utilizing measurement of congestion, i.e, the bumper model. In 2011, the traffic volume of the main channel is 11.96 ships per hour and its traffic density is evaluated 9.53% of the basic traffic capacity. Therefore the existing width of the main channel, 850m is safe enough but the channel requires the traffic separation scheme as suggested in order to secure the safe of the transit vessel.
5.
1998.09
서비스 종료(열람 제한)
본 논문은 미국내의 다른 터미널 운용구조를 고찰하고, 크레인 사용을 위해서 가장 효과적인 터미널 관리장치유형(ACC, CUP, PTU)을 찾조자 시도하여 연구한 결과이다. 터미널 비교에 사용된 효율을 산정하기 위해서 시간당 순총 크레인 움직임을 사용했다. 가장 효과적인 장치를 찾기 위해서 총 31개 터미널을 비교하여 시도했다. 이 이론에서는 PTU 시설이 가장 효과적인운영장치임을 알게 되었으며, 보기로 든 터널이 너무 적어서 미국내 터미널에 이 결과를 직접적으로 적용하기에는 어려움이 있다.
6.
1998.09
서비스 종료(열람 제한)
최근에는 고장력강의 사용증대와 함께 구조부재가 경량화추세에 있으며 이상부식이 발생한 구조부재는 강도가 크게 저하되리라 예상되지만 지금까지 이에 관한 연구가 거의 없는 상태이다. 본 연구에서는 단소성대변형유한요소법을 적용하여 국부이상부식을 가진 판이 면내압축하중을 받을 경우에 압축최종강도에 미치는 부식부영역의 크기. 부식부의 판두께 감소량 및 세장비의 영향에 대하여 연구하였다.
7.
1998.09
서비스 종료(열람 제한)
Today the number of high school drop-outs is increasing , and also it is serious social problems. But almost factor analyses on the drop-outs are projected by questionnaire. This paper find out by the real data form the concerned documents what factors of drop-outs are. In order to accomplish this study purpose, the methodology are used such as Fequency Analysis, Correlation Analysis, Crosstabulation Analysis. Through the this study this paper could siome suggestions as followings. The first , all education authority should analysis what factors of drop-outs and what drop-out situation is . The second, every teacher should counsel with all problem students sincerely regarding to their characters, future occupations, life course and etc. The third, the most and worst important factors of drop-out is runaway. Because it is very difficult for teacher to teach, lead and guide a runaway student, therefore thepreventino of runaway is efficient for reducing of drop-outs. The fouth, the students violating rules are retrained propoerly in view of guide for good path. The fifth, besides of the above factors. there are drop-out factors such as the health, disease, dafety accidents . All parents. teachers, and students should try their best to solve. To the end, education authority try to encourage teachers to do their role with maximum sense of duty.
8.
1998.09
서비스 종료(열람 제한)
This article aims at suggesting a practicla auide to navigation under restricted visibility by a study of an English court. This case os a good example of setting out safe speed. close-quarters situation, safe passing distance as the above factors are not enumerated in Collision Regulations.
