• 수산경영론집
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• 제54권3호
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• pp.17-28
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• 2023

In this study, a conjoint analysis was conducted to derive a combination of fishing quota management system by fish species preferred by fishermen. In the analysis, detailed levels were set according to each attribute of the system. For analysis, this study conducted a design question survey for conjoint analysis on 303 fishermen engaged in fishing activities in the offshore and coastal sea. The Conjoint analysis was conducted on all fishermen, offshore fishermen and coastal fishermen. In addition, an analysis was conducted on TAC system participants and non-TAC system participants, and the targets were classified for comparison according to the characteristics of fishermen. Fishermen's preference for the system confirmed for six attribute ("catching fish even if there is no fishing quota", "how to allocate fishing quota", "fishing quota management agency", "upper limit of fishing quota," "Possibility of Trading in the Fishing Quota", and "Application of Other Regulations.") and the detailed level of each attribute. As a result of the analysis of the importance of attributes, fishermen thought that "fishing quota management agency (24.1%)" was very important, and "catching fish even if there is no fishing quota (23.9%)" and "how to allocate fishing quotas (22.9%)" were also given some importance.

• 수산해양기술연구
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• 제47권3호
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• pp.183-193
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• 2011

This study made a comparative analysis of behavioral reaction of squid to red (624nm), green (524nm), blue (460nm) & white LED light, its arrival time for the shadow section by making the shadow section in the central section of a water tank just like the bottom part of a squid jigging vessel, and on-site catching efficiency of LED fishing lamp with control fishing vessel. The color LED light showing the highest squidgathering rate as against the shadow section was found to be blue LED light with 39.3% rate under the dark (0.05lx) condition. Under the brighter condition than 0.05lx, white LED light was found to have the highest gathering rate of 41.5%. In addition, it was found that squid gathering rate was high at the shadow section which showed 6.3-fold brightness difference between the shadow section and bright section. As for the arrival time for the shadow section, blue LED light was found to be the fastest in attracting squids in 192.7 seconds under the dark condition while the red LED light was the fastest in luring squids in 164.6 seconds under the bright condition. The ratio of the squid-jigging operation and sailing in fuel consumption of the fishing vessel loaded with LED fishing lamp is about 7 to 1, showing most of the fuel is consumed more in sailing than in squid-jigging operation. As for a catch of squid, the control vessel loaded with MH (Metal Halide) fishing lamp had more catch of 600-7,080 squids than the vessel loaded with LED fishing lamp having a catch of 260-1,700 squids. In addition, even in the comparison of a catch per automatic jigging machine, the catch of the vessel loaded with MH fishing lamp excelled that of the vessel loaded with LED fishing lamp in 6 operations of squid jigging out of 9 operations. The ratio of hand-jigging and automatic jigging machine (one line) in the LED fishing lamp vessel was 1:1.1 excepting the case of having a catch only using an automatic jigging machine, showing almost the same with each other in catches, while in case of a MH fishing lamp vessel, its ratio against hand-jigging was 1 to 5.8, showing hand-jigging excelled in catches.

• 수산해양기술연구
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• 제7권1호
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• pp.39-43
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• 1971

Koreans have been interested in the North Pacific fisheries since the exploratory fishing was carried out by R/V Baek-Kyung of Pusan Fisheries College in 1966. Although the salmon fishing was interrupted by some countries, Korean trawlers are venturing in the North Pacific Ocean for catching demersal fishes. The trawl fishery in the region raises some problems. i. e. the conflict with the coastal or nearshore fishery, low fish price, etc. This paper concerns with the plan for the settlement of these problems..

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2004년도 춘계학술대회 논문집
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• pp.231-234
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• 2004

Ratio that robot occupies is low level worldwide fairly in suspension wire, electricity electron and neutralization learning industry and domestic industry of this is staring in average love. Can speak that grafting of robotic machine and neutralization learning industry is high in terms of side of creation of the added value or progress of technology rightly hereupon. This research raises or designed multi-function handling robot that can make welding, assembly conveniently catching large size work water

• 한국가금학회지
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• 제23권2호
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• pp.99-106
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• 1996

Because of the imminent market opening of livestock and poultry products, Korean poultry industry is faced an influx of contagious diseases from abroad. Due to the increasing trend of intensive and automatic poultry farming, the risks of catching various poultry epidemics are ever more increasing. For the prevention of poultry epidemics, the principles of biosecurity should be observed rather strictly. In addition, regular checking to confirm the presence or absence of latent diseases through serological test, post-mortem examination, and laboratory test, should be carried out routinely. Finally, all kinds of stress factors should be minimized to keep the flock healthy and productive, so that they can achieve their maximum genetic potential.

• 천문학회보
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• 제46권1호
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• pp.33.3-34
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• 2021

In LCDM universe, large, massive structures, like galaxy clusters, grow through the successive accretion/mergers of smaller structures. Therefore, at high redshift, unlike local, it is expected that there would be plenty of galaxy clusters which are still growing. Here, we report the discovery of a high-redshift (z~1) galaxy cluster which is in its active formation stage. This cluster is well connected to the large scale overdense environment and contains high fraction of star-forming galaxies, providing a good example supporting our previously suggested 'Web-feeding model'.

• 수산해양기술연구
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• 제44권3호
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• pp.184-193
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• 2008

For environment-friendly fishery, the lead sinkers of octopus drift line were developed with the environmentfriendly sinker, and their characteristics and performance were investigated. To make the environmentfriendly sinker, the hydrate ceramic material was developed, and to increase the weight and strength, the iron power was added to it. The fishing hook was machine-made, and standardized, by using 60cm iron wire. For the manufacture of the sinker, the first, the mold was made, and then, hydrate ceramic material and water were quantitatively mixed. The mixture was poured into the mold prepared with a fishing hook already inserted, and had hardened for several hour, before it was taken out of the mold as a complete sinker. The sinkers were made in the 8 types ranging in weight from 150 to 500g, and their specific gravities were diverse from 2.871 to 6.637, which was 0.19 to 0.44 times lower than that of lead. The movement of the environment-friendly sinker by flume tank was possible in the weaker current speed than the similar lead sinker. In the coastal fishing grounds of Gangwon province, the comparison of catching efficiency was made between the improved fishing gears composed of the environment-friendly sinkers and artificial baits, and the current used fishing gears of lead sinkers and pig-fat baits. The result showed the tendency in which the improved fishing gears caught the bigger octopuses than the current used fishing gears. In the quantity and number of the fish catch per unit fishing gear, the improved fishing gear showed a little more catch than the current used fishing gear, regardless of the fishing area. However, the number of the improved fishing gears lost during fishing operation was similar to that of the current used fishing gears.

• 한국수산과학회지
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• 제20권2호
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• pp.95-105
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• 1987

어획성능이 우수한 튜브통발의 적정규격을 규명하기 위하여 규격이 다른 실험용 튜브통발을 여러 가지로 제작하여 수조실험과 해상실험을 실시하였다. 수조실험에서는 튜브, 깔때기 및 혀그물의 적정규격을 규명하였고, 해상실험에서는 수조실험에서 규명한 개량형 튜브통발과 재래식 플라그틱통발과의 어획성능을 비교 검토하였다. 본 연구의 결과를 요약하면 다음과 같다. 1. 붕장어는 통발침지 15분이내에 전체입망중 $90\%$이상이 입망하였다. 2. 개량형 튜브통발과 재래식 플라스틱통발의 구조적 차이점은 구멍이 없는 튜브의 양단에 입구가 있으며 깔때기의 끝에 양쪽으로 봉합선을 넣어 납작하게 한 2중혀그물을 부착하였고 통발의 중앙부에 그물로 만든 이료주머니를 고정시킨 점으로 압축된다. 3. 개양형 튜브통발의 적정규격은 (1) 튜브 : 직경 $12\~13\times$길이 80cm, 2) 깔때기 : 깊이 $5\times$안쪽링의 직경 6cm, (3) 혀그물 : 길이 10cm 이다. 4. 개량형 튜브통발의 어획성능이 재래식플라스틱 통발보다 약 2.3배 우수하였다.

• 기술혁신연구
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• 제13권2호
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• pp.97-131
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• 2005

This paper has discussed several issues regarding the barriers and opportunities for technological catch-up by the late-comer countries and firms. As one of the barriers to technological catch-up, the paper emphasizes the uncertainty involved with the third stage of learning how to design. The barriers arise because as the forerunner firms refuse to sell or give license to successful catching-up firms who thus have to design the product by themselves. The paper discusses how to overcome this barrier. It also notes that if the crisis of design technology is a push factor for leapfrogging, arrival of new techno-economic paradigm can serve as a pull factor for leapfrogging, serving as a winder of opportunity. The, it emphasized the two risks with leapfrogging, namely the risk of choosing right technology or standards and the risk of creating initial markets, and how to overcome these risks. It discusses how to overcome these risks in leapfrogging, and differentiates diverse forms of knowledge accesses. Then, the paper takes up the issue of whether there can be a single common or several models for catch-up. A common element of catching-up is to enter new markets segments quickly, to manufacture with high levels of engineering excellence, and to be first-to-market by means of the best integrative designs. This observation is supported by the fact that Korea and Taiwan has achieved higher levels of technological capabilities in such sectors as featured by short cycle time of technology. The possibility of two alternative models for catch-up is also discussed in terms of the key difference between Korean and Taiwan, especially in the position toward the source of foreign knowledge and the paths taken toward the final goal of OBM. Taiwan followed the sequential steps of OEM, ODM and OBN, in collaboration or integration with the MNCs. Korean chaebols jumped from OEM directly to OBM even without consolidating design technology.

• 대한한의학방제학회지
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• 제11권1호
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• pp.19-36
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• 2003

Through investigation on prescriptions from Dongeuibogam with Radix Puerariae as an ingredient, the following conclusions were reached. The 59 prescriptions with Radix Puerariae as an ingredient are mentioned from chapter of Pediatrics to chapter of Intestinal Convulsions. And 85% of those appears from chapter of Pediatrics to chapter of coughs. Prescriptions with Radix Puerariae as the main ingredient are used for skin diseases, cold, epidemics, abscess, diabetes, stroke, feverish diseases, intestinal diseases, weakness and cough. The dosage of Radix Puerariae varies from 0.875g to 11.25g. 3.75g was the most frequently used dosage which accounts 44%. And those with small dosage of 0.875 to 1.125g were for use on infants or pregnant women. The grounding pathology used for prescriptions with Radix Puerariae as an ingredient appeared to be mostly the pathology related to the Six External Qi. Among this, wind with cold(風寒), wind, cold with heat and humidity(風寒署濕), catching cold(傷寒), successively catching cold(兩感傷寒), cold of the Yangmyung and heat clogging(陽明傷寒火鬱), abnormal weather(時令不正) are the majority. Through the prescriptions with Radix Puerariae as an ingredient, it could be concluded Radix Puerariae that has various functions such as sweating and removing rash(發表透疹), exhalation and curing muscular ache(發散解肌), producing body fluid and ceasing thirst(生津止渴), opening abscess and healing the scar(托瘡生肌), removal of fever(解熱), resolving hangover(醒酒). Seungmagalguntang(升麻葛根湯) is used as the base prescription the most, and various prescriptions and herbs are combined according to the case.