二ㅁ引 中型機船底引網 漁業의 漁獲量에 관하여(II)

鄭興基 군산대학교 1978 群山水産專門大學 硏究報告 Vol.12 No.2

I have here researched the range of fishing area and the catches quantities of its speices in each sector in 1977. The results ase as follows. 1.The operation is being done in the west north sector of Auchung Do and Gyung Yul Biyul Do and in the west sector of WI DO. The center of fishing area locates in 172 and 161 sector (36'-37'N and 125'-30'E). 2.The main operation is being done in the west-south of Auchung Do in spring and in autumn and winter in ther west-north of Gyung Yul Biyul Do. 3.B, sector is the main fishing are by 58% of total catches and especialy brings more catches in autumn. 4.Skates Ray and Blue crab are obtained in 172 sector, and the catch ranking of others reaches 52% total catches, and Flounder 11% Blue Crab 10%, Skates Ray 8%, Bastard Halibuts 4%, Shrimp and sole 3%.

韓國 蝟島와 日本 離島의 現況과 比較

鄭興基(Heung-Ki Chung) 한국수산해양교육학회 1997 水産海洋敎育硏究 Vol.15 No.-

水産專門大學 學生의 價値觀에 關한 硏究 : 漁業科 學生을 對象으로

鄭興基 圓光大學校大學院 1981 學位論叢 Vol.6-1 No.-

The concluded investigative report on the student's sense of value in Dep. of Fisheries, Fisheries Technical College is arranged as follows: 1. In the student's sense of value most students showed a tendency toward pursuing the practical value rather than abstract. According they were generally satisfied with the present curriculum which placed emphasis on acquiring their license. As the result of this study, it was notified that students became enthusiastic about required subjects to be taken the examination for the government issuing license. Beside this, they aslo showed the trend to adapt themselves to the given situation when they chose their vocation. In the light of predominating students number who wanted a professional job, captain, the above fact was sufficiently proved. 2. It was notified that the observed sense of students was more strongly effected on self-centered mind or succeed in life rather than on a firm vocational sense or ethics. As the result of this study, it was observed that the students wanted to enter the higher grade college to get the better treatment and remuneration, when they choose their vocation it is not based on their firm faith but they decide it according to other's recommendation or fondness. 3. It was notified that they strongly showed the political and public sense. Besides, this sense might have different relation from two charecterisitics, pointed above. However, it is suggested that the expression declines to what the respondents have required rather than an expression of their decision, as Professor. Kim Tai Kil had already pointed out.

全北 401號의 操縱性能에 關한 硏究

鄭興基,徐萬錫 군산대학교 1986 群山水産專門大學 硏究報告 Vol.20 No.3

The Z-test was carried out in order to know the maneuverabilities of the M.S. Jeonbuk 401(303 ton) which is the training vessel of Kunsan National Fisheries Junior College. The main results obtained are as follows: 1. The maneuvering indices K' and T' are 1,132, 0.904, 1,277 and 1,431, 0.959, 1,752 at 10˚, 20˚, 30˚ tests respectively. This results mean that the maneuverabilities are good at the rudder angle 30˚, and the obeying ability is also good at the rudder angle 20˚c. 2. Since the maneuvering indices K' and T' at 10˚ test are just a little high compared with those of other fishing boats, the turning ability of this vessel is considered to be good state, but the boeying ability is considered to be bad state. 3. The running distance at 10˚ test is about 9.5 times of her own length, and doesn't exceed the standard maneuvering distance 5 to 11 times. Therefore, it can be said that the maneuverabilities of this vessel are comparatively good. 4. The relationship between K' and T' is appeared as (1/K') = 0.430+0.648(1/T').

韓日水産系 學校 實習船의 構造와 運航管理 : 群山大學敎 實習船을 中心으로

鄭興基 군산대학교 1992 群山水産專門大學 硏究報告 Vol.26 No.1

In order to introduce the training ship building technology of the advanced country to the training ship which is constructed by the ADB educational loan project, I had studied the structure of the newly built training ship of Kunsan National University comparing with Shin Yo Maru, training ship of Tokyo Fisheries University in Japan. Futhermore, I had inverstigated the aspect of operation and maintenance of Inchon and Daechon fisheries high school training ship comparing with the 8 Japanese high school training ship. The results were as follows 1. The structure of newly built training ship. 1)The newly built training ship is 62m in perpendicular length, so it is necessary to install the bow thruster for the fine maneuvering such as the oceanographic observation and entrance and exit to port. 2)It is required that the number of officer's rest room reduce with 2∼3 places through the common use, and student's bath room and store for the spare parts have to intall more than 1∼2 places additionally. 3)Line hauler which is installed on the starboard of the fore deck is requested to move on the starboard of upperdeck of wheel house behind because it is very difficult to operate when rough sea. 4)The space room of wireless mom is too large comparing the purpose of use, so it is necessary to make another directions for use. 2.Training on board of fisheries high school and management of training ship. 1)Inchon and Daechon fisheries high school's high school trainings were scheduled to the off shore trawl and tuna long - Line training in the pacific ocean. 2)On the Individual training days, Daechon and Inchon fisheries high schools assigned the training period for 24days, but Japanese fisheries high schools were scheduled the long period for 1-2months on the purpose of the individual skill 3)Kun san fisheries college has possessed the training ship with the age of 20 years more, and the period of decking for preservation of hull and engine maintenance was 30days per year. On the contrary, Japanese fisheries high school's training ships were not exceeded the age of 14 years, and the period of docking was 60∼110 days through the 2∼3 times per year.

群山港에 揚陸한 漁獲量에 關한 統計的 考察

鄭興基 군산대학교 1975 群山水産專門大學 硏究報告 Vol.9 No.3

The following is the result from investgating by statistical method the total amount of catching fish and the amount of catching fishes landed at Gun San harbour for these 5 years from 1971 to 1975. 1.The total amount of catching fish by commission sale has increased every year for these 5 years and it has increased by about 2.6 multiple in 1975 in cotrast with it in 1971. and it's rate is higher in summer and autumn than in any other season. 2.By the investigation of the amount of catching fishes, Trichiurus Leplurus shows the highest catch rate by 26%, Pseudosciaera shows low rate by 7%, Stronatecides Argertend shows the lower rate by 5%, and Xyslricas Rgigorijewi shows the lowest rate by 2% out of the total commissions ale by 2% out of the total commission sale every year. 3.By the seasonal veriation, Trichiurus Leplurus shows higher catch rate in autumn (especially in october) Pseudosciaera in spring (April anal May), Stronatecides Argenteus in summer, and Xystrias Grigorjewi in spring and autumn.

西海區 복어류의 漁業生物學的 硏究 : Ⅰ. 복어류의 漁獲量 變動과 漁場分布에 관하여

鄭興基 군산대학교 1981 群山水産專門大學 硏究報告 Vol.15 No.3

during the period from 1965 to 1979. We examined the data of year book of fisheries statistic and puffer catches by long line in the yellow sea (Gun san) during the period from 1977 to 1 This paper dealt with the result of investigations on puffer in the yellow sea of Korea 979. At the same time the oceanographic data in yellow sea of Korea was collected during the periods of February and August from 1977 to 1979. The results obtainted are as follows 1.Judging from the fisheries fluctuation during the period from 1965 to 1979, the total catch is increased every four years, but decreased every three years. 2.The rate of puffer catches showed 50.6% in the yellow sea, 37.6% in the southern sea, 11.7% in the eastern sea and Gun fan is a strategic area of puffer catches out of other province of Korean sea. 3.Annual catches of puffer reach 61.5% by the long line. The avelage annual catch for the past 15-years is 4,482.9 M/T, and the variation coefficient; C.V; is 29.3, thus the fluctuation by the year is not so irregular. 4.Puffer catches in the yellow sea during the period of puffer migrating toward the north from 1977 to 1979 showed 0.27 M/T, while during the period of southward moving it showed 0.15 M/T, and the whole fishing season of puffer catches showed hi앙or value in the years of 1965, '69, '73, '77 and than in the years of 1966. '72, '76. 5.It's fishing ground was formed with in connecting line of yellow sea (124˚-127˚E, 32˚5'-37˚2'N) and the Geok Yeol Bee Do is the fishing ground in summer and Heug San Do in Autumn, southwestern of Je Ju Do in winter. 6.From the view point of the relation between the oceanographtic conditions and the formation of fishing ground, full catches are showed when the warm current distributes along the coast 7.The deep water temperature at which puffers are caught during the whole fishing season varies from 8℃ to 22℃ in the yellow sea of Korea Judging from the oceanographic conditions at equations the optimum water temperature for puffer migration seems to be 16˚-20℃, showing that the most favorable temperature for catch is 18℃

流刺網 漁業의 漁獲量과 漁場分布에 關하여

鄭興基 군산대학교 1982 群山水産專門大學 硏究報告 Vol.16 No.3

In the communication and electronic systems the frequency multiplier is of use. It is especially hard to multiply the frequency of the sinusoidal wave in waveform disposal aspect. For the last several years, the method of sine wave multiplication following as; 1.The conventional design of a frequency doubling circuit is a class C amplifier with the output tank circuit tuned to the second harmonic of the input signal. 2.It is possible to multiply the sine wave by designing the wave converter circuit to the input and output terminal hence the multiplication of sqare wave is realized using op-amps. But there are various defects in these methods respectively. In this paper we accomplished the multiplication of the sine wave by inserting in the emitter circuit of the amplifier is a nonlinear element having a V-I characteristic approximating a parabola in the region of peak current point. The multiplication principle and the circuit design are described theoretically. In the process of experiment, we preceived an accomplished fact that the tunnel diode can be used as the emitter feedback device of the amplifier instead of non-linear circuit designed in this paper. Because the V-I characteristic of tunnel diode approximate to the parabola in the region of peak current point.

流刺網에 依한 민어 漁獲量과 漁場分布

鄭興基 군산대학교 1984 群山水産專門大學 硏究報告 Vol.18 No.3

With the statistical annual report by the Office of Fisheries Administration (1971-1981) and the catches by croaker drift gillnet, which were hauled in west sea area during 1977-1979, the changes of catches and distribution of the fleshing ground are checked and as the result of the survey, the following could be summarized. 1.The better fishing sectors in the Yellow Sea and the East China Sea are 223rd sector (13.01 kg), 33˚30'N 127˚E and 243rd sector (5.75kg), 32˚30'N 127˚E and monthly catches showed October (2.64kg), November (2.45kg). 2.The good catches period of Croaker by the drfit gill net was Dec, Jan, Feb corresponding to winter season. 3.As the fishing ground for the croaker drift gill net, East China Sea Jeju-do and, Hueksan-do, Dukjuck-do sea are formed.

이소인 中型 機船底引網 漁業의 漁況에 關하여 (Ⅰ) : 海區別 中心으로

鄭興基 군산대학교 1977 群山水産專門大學 硏究報告 Vol.11 No.2

I have here researched the range of fishing area be middle class two-boat trawler and the quantities of catches in each sector and it's species. The results are as follows. 1.The operation is being done in the west-north sector between Auchung-Do and Gyung Yul Biyul Do, and in the west-south soctor of Auchung Do, and in the north sector of Dea-Huksand-Do. The center of fishing area is in 172, 182 sector and its' location is 36˚25'N 125˚3'E. 2.The operation is being done in the west-south of Auchyung-Do in spring, and between Auchyung-Do and Gyung Yul Bi-yul Do in fall, and winter. 3.It occupied 72.2% of total catches in 171, 172 sector, and especially brings good catches in fall. 4.The sector obtained in each species ; Flonnder is caught in sector 172, shrimp, in sector 172, cod, in 182, Blue crab, in 172 and 182. The catches are specified into 10% of Flounder, 9% of Blue crab, and skate ray each, 5% of Bastard Halibut, 3% of sole, and 49% of others wich occupies half of total cafches.