• Title/Summary/Keyword: Fishing Method

검색결과 502건 처리시간 0.027초

한국 동해안 명태어장에 분실된 폐어구수법에 관한 연구 (Recovery of Lost Fishing Gear in Alaska Pollack Fishing Ground of the East Coast in Korea)

  • 안영일;박진영;조현정
    • 수산해양기술연구
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    • 제37권1호
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    • pp.9-17
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    • 2001
  • 우리나라 동해안 명태어장의 어업환경 개선을 위한 기초연구로서 , 1998년 6, 7월과 1999년 5, 7, 8월에 걸쳐서 강원도 고성군 근해에서 사조묘로 수거 한 침체어구의 실태를 조사·분석하였다. 1. 폐어구는 어업활동에 의해서 발생된 것으로 저자망과 통발의 2종류였다. 2. 폐어구의 무게는 저자강이 1,170 t,통발이 4 t 으로, 저자망이 압도적으로 많았다. 3. 마일당 저자강의 수거량은 1998년 22.74 t에서 1999년 10.72 t 으로 12.02 t 감소 하였다. 4. 폐어구 수거율은 1998년 38.0%, 1999년 41.9%로 낮았고 CPUE는 1998년 11.27 t /회, 1999년 7.48 t /회이었다. 5. 사조묘에 의한 본 조사방법은 어장에서 발생한 침체어구의 수거에 유효한 수단이라고 생각된다.

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G/T 4.99톤급 한국 연안어선의 저항성능 개선에 관한 연구 (A Study on the Improvement of Resistance Performance for G/T 4.99ton Class Korean Coastal Fishing Boats)

  • 유진원;이영길;지현우;박애선;최영찬;하윤진;정광열
    • 대한조선학회논문집
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    • 제47권6호
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    • pp.757-762
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    • 2010
  • Korean fishing boats have had appropriate hull forms for the safety, stability and convenience of fishing ability. However, Korean fishermen are recently concerned about the resistance performance and speed of Korean fishing boats, because the prices of fuel oil are gradually risen, also the exhausting of fish resources and the demand of high speed fishing boats are increased. Therefore, the necessity of the study on the improvement of resistance performance for Korean small coastal fishing boats is gradually increased. This study compares the hull form characteristics of Korean fishing boats with those of Japanese fishing boats, and the hull form of a representative Korean fishing boat is modified. From the modification of the hull form parameters for the Korean fishing boat, the improvement of resistance performances is evaluated. Moreover, the increase of resistance performances is also achieved from the modification of local characteristics for the hull form of the Korean fishing boat. A computational method and ship model tests in towing tank are used for the conformations of the improvement of resistance performance.

빅데이터를 활용한 어촌체험휴양마을 방문객의 경험분석 - 화성시 백미리와 양양군 수산리 어촌체험휴양마을을 대상으로 - (An Analysis of the Experience of Visitors of Fishing Experience Recreation Village Using Big Data - A Focus on Baekmi Village in Hwaseong-si and Susan Village in Yangyang-gun -)

  • 송소현;안병철
    • 농촌계획
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    • 제27권4호
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    • pp.13-24
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    • 2021
  • This study used big data to analyze visitors' experiences in Fishing Experience Recreation Village. Through the portal site posting data for the past six years, the experience of visiting Fishing Experience Villages in Baekmi and Susan was analyzed. The analysis method used Text mining and Social Network Analysis which are Big data analysis techniques. Data was collected using Textom, and experience keywords were extracted by analyzing the frequency and importance of experience texts. Afterwards, the characteristics of the experience of visiting the Fishing Experience Village were identified through the analysis of the interaction between the experience keywords using 'U cinet 6.0' and 'NetDraw'. First, through TF and TF-IDF values, keywords such as "Gungpyeong Port", "Susan Port", and "Yacht Marina" that refer to the name of the port and the port facilities appeared at the top. This is interpreted as the name of the port has the greatest impact on the recognition of the Fishing Experience Villages, and visitors showed a lot of interest in the port facilities. Second, focusing on the unique elements of port facilities and fishing villages such as "mud flat experience", "fishing village experience", "Gungpyeong port", "Susan port", "yacht marina", and "beach" through the values of degree, closeness, and betweenness centrality interpreted as having an interaction with various experiences. Third, through the CONCOR analysis, it was confirmed that the visitor's experience was focused on the dynamic behavior, the experience program had the greatest influence on the experience of the visitor, and that the experience of the static and the dynamic behavior was relatively balanced. In conclusion, the experience of visitors in the Fishing Experience Villages is most affected by the environment of the fishing village such as the tidal flats and the coast and the fishing village experience program conducted at the fishing port facilities. In particular, it was found that fishing port facilities such as ports and marinas had a high influence on the awareness of the Fishing Experience Villages. Therefore, it is important to actively utilize the scenery and environment unique to fishing villages in order to revitalize the Fishing Experience Villages experience and improve the quality of the visitor experience. This study is significant in that it studied visitors' experiences in fishing village recreation villages using big data and derived the connection between fishing village and fishing village infrastructure in fishing village experience tourism.

개별여행비용법을 이용한 바다 유어 낚시의 소비자 잉여추정 (Estimating Consumer Surplus for Recreational Sea Fishing using Individual Travel Cost Method)

  • 표희동;박철형;정진호
    • Ocean and Polar Research
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    • 제30권2호
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    • pp.141-148
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    • 2008
  • This paper aims at estimating consumer surplus for recreational sea fishing in Tongyeong coastal area using individual travel cost method. A Poisson model (PM), a negative binomial model (NBM), a truncated Poisson model (TPM), and a truncated negative binomial model (TNBM) are applied for individual travel cost method in order to account characteristics of count data (non-negative discrete data.) The survey was conducted for 462 inshore anglers using personal interview method in Tongyeong during July and October 2007. Respondents were asked about how often they do fishing, travel costs, catch, income, and so on. Because of over-dispersion problem in PM and TPM, NBM and TNBM were considered to be more appropriate statistically. All parameters estimated are statistically significant and theoretically valid. As the results based on TNBM, consumer surplus per trip was estimated to be 183,486 won, total consumer surplus per person and per year 3,399,658 won, and the marginal effect of consumer surplus on % changes in catch rate is 185,372 won.

Environmental Factors in a Realistic 3D Fishing-Net Simulation

  • Yoon, Joseph;Kim, Young-Bong
    • International Journal of Contents
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    • 제10권3호
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    • pp.84-89
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    • 2014
  • The mass-spring model has been typically employed in physical-based simulators for clothes or patches. The mass-spring model frequently utilizes equal mass and the gravity factor. The model structure of masses supports a shape applicable to fishing nets. Therefore, to create a simulation model of a fishing net, we consider the mass-spring model and adopt the tidal-current and buoyancy effects in underwater environments. These additional factors lead to a more realistic visualization of fishing-net simulations. In this paper, we propose a new mass-spring model for a fishing-net and a method to simplify the calculation equations for a real-time simulation of a fishing-net model. Our 3D mass-spring model presents a mesh-structure similar to a typical mass-spring model except that each intersection point can have different masses. The motion of each mass is calculated periodically considering additional dynamics. To reduce the calculation time, we attempt to simplify the mathematical equations that include the effect of the tidal-current and buoyancy. Through this research, we expect to achieve a real-time and realistic simulation for the fishing net.

어촌사회의 실태 및 어민들의 의식에 대한 조사 -충청 서해안 어촌을 중심으로- (An Investigation on the Actual State of the Fishing Villages and the Attitudes of Fishermen)

  • 김영조
    • 수산경영론집
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    • 제29권1호
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    • pp.89-120
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    • 1998
  • This paper aims to investigate the actual conditions of the fishing villages and the attitudes of fishery workers. In this study, field research, interview method, and survey research method are utilized. The regions of this research are 4 fishing villages of the Yellow Sea coast and the survey data are collected from 119 fishermen. The results show that the fishery industry has come to a crisis due to the staggering fish catches and fishery income, increasing expenditures am debt, continuous decrease in numbers of fishery workers, etc. In addition, the work morale of the fishermen appears to be very low. They take a dim view of fishery industry and their household financial status. They perceive that their qualities of life are very low as well. The implications of these findings far comprehensive development of fishing villages are then discussed.

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어업권 회계에 관한 연구 (A Study on Accounting for Fishery Right)

  • 정준수;김태용
    • 수산경영론집
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    • 제11권1_2호
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    • pp.115-155
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    • 1980
  • Nowadays managers of fisheries enterprises and users of accounting information have a considerable interest in the fishery right. The fishery right, which is given by administrative quarters, is referred to exclusive fishing right in a certain coastal fishing ground, and it has been one of the property rights since the turn of the century. The main purpose of this study is to provide an improved accounting method of the fishery right from the side of accounting. To achieve this purpose, legal nature of the fishery right should be understood in the first place, for the fishery right, an intangible asset, is a sort of property right guaranteed by the fisheries laws, According to the basic law in the fisheries "Fisheries Law, " the fishery right is broken down largely into three categories; culture fishing right, set fishing right and common fishing right. The legal characteristics of these fishery rights are as followings: 1. The fishery right is a private right. 2. The fishery right is a property right. 3. The fishery right is a right in rem, and legal provisions pertaining to land are applied to the fishery right with necessary modifications. In addition to the above fishery rights, the Fisheries Law provides some provisions on the so-called entrance right, and those who obtained the right are authorized to access to a certain common fishing right fishing ground where they have been traditionally fishing. In the inland fisheries, the fishery right system similar to that of the coastal fisheries discussed above is adopted in conformity with the Inland Fisheries Developing and Expediting Law. Viewing from an angle of accounting, there are two kinds of additional fishing rights which are dealt as assets. These fishery rights dealt as asset include the license of entry in the so-called permitted fishing which is also called as fishery right in plain language, and tile entrance right obtained abroad. Although these two kinds of rights are not the fishery right from a viewpoint of law, they are regarded as fishing rights in accounting which intends to provide a useful economic information.formation.

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정치망어업의 경영합리화에 관한 연구 (A Study on the Managemental Rationalization of Set Net)

  • 김현규;장충식;이승래
    • 수산해양교육연구
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    • 제10권2호
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    • pp.184-210
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    • 1998
  • The set-net fishing is involved in the trap fishing method that intercepts the fishes migrating along the coast and induces them to be in the bag net stretched in advance. And this fishing also corresponds to the licensed fishing in fisheries law. Though its annual total production of around 50,000 to 70,000 M/T is less than in other fishery section, its price becomes higher because the fishes are sold in the live fish condition. Until recently, the set-net fishing is one of the preferred fisheries on account of its less operation expense and stably operating condition in a long term. In the meantime, the industrialization in Korea having been prospered along coastal area and the over fishing in terms of the powered and larger size fishing boat make the fishing ground environment worse yearly. In addition, its difficulty becomes more worse with issuing fishery product free import in July 1997; accordingly, the strategy for the set-net fishing through business rationalization should be considered. From the discussion of the sort of set-net, general present situation and operating actual state of set-net fishing, the improved methods for business rationalization in the present paper is proposed as follows: 1. to increase the fisheries resource through prevention of the marine contamination and purification of coastal area environment. 2. to save the labour cost through the improved the fishing gear. 3. to improve the fish quality through development of the process technology. 4. to increase the income of fishers through improvement of the distribution channels.

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우리나라 어선 해양사고 제어 요소에 관한 기초 연구 (A basic study on control factor for the marine casualties of fishing vessel in Korea)

  • 김욱성;이주희;김석재;김형석;이유원
    • 수산해양기술연구
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    • 제49권1호
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    • pp.40-50
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    • 2013
  • This study is aimed to find a control factor for the marine casualty of fishing vessel by using the risk quantitative method of marine casualty, and sequentially timed event analysis for the reason finding. The result is that collision, sinking, and capsizing took high risk need to be strongly controlled. And the accident reason and control factors distinguished are as follows. The 82.2% of collided fishing vessels have negligence of look out as a immediate cause, while it was judged that underlying causes were the characteristics of vessels and fishing method, lack of suitable complement, fatigue, the prejudice or ignorance on steering and sailing rules. So the control factors are; firstly needs educational control measures and in terms of systemic control approach expand the range of the certificate of competency more smaller tonnage.

그물코의 길이와 콧수의 변화에 따른 모노필라멘트 자망 그물감의 중량 계산 (Calculation of weight on netting with the changes of size and number of mesh for monofilament gill net fishing gear)

  • 박성욱
    • 수산해양기술연구
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    • 제48권4호
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    • pp.301-309
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    • 2012
  • A net-assembling company for gill net fishing gears makes a design based on the size of nets provided and determines floats, types of weights, and numbers. In addition, through the accurate examination of net weights in the process of fishing gear designing, it can prevent an excessive use of designing costs. The weight of twine can be easily calculated by its thickness differences, but the weight of netting has errors to be calibrated since the weight of netting is not changing exponentially with the changes of number and size of meshes. This study aims to suggest and empirically analyze the methods for estimating the weights of netting in accordance with the changes of number, size and thickness of meshes for a sound management of netting and net-assembling companies. Results indicated that the method using the knots and legs of netting was not practically usable because the errors were increased as the number of mesh increased. However, the method using netting area shown its usage potentiality with the calibration of the increasing ratio of mesh numbers.