• 한국경제지리학회지
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• 제8권1호
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• pp.153-169
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• 2005

본 연구에서는 $\ulcorner$한국수산지$\lrcorner$ 를 통한 1910년경 충남의 수산업 현황 및 실태 등을 분석하였다. 분석결과 충남 서해안 지역에는 30개의 포구가 있었으며, 이것들의 입지유형을 5개 유형으로 분류할 수 있었다. I 유형은 중 $\cdot$소하천변에 위치한 포구, II유형은 금강본류 연안의 포구 III유형은 연안에서 외해에 접하고 있는 포구, IV유형은 만내에 입지하는포구, V유형은 연안도서지역의 포구들이다. 어종은 도미, 삼치, 가오리, 조기, 갈치, 새우등이며, 도미어업 근거지는 죽도 및 연도였으며, 조기어장은 전라도 칠산탄에서 충남연해 일대에 형성되었고, 갈치는 전 연안 각처에서 어획되었다. 제염업은 충남 전해안의 만입부에서 이루어졌으며, 대표적 지역은 서천만, 웅천만, 오천만, 안면도, 태안, 당진지역 등이다. 특히 태안군 지역에서 생산된 소금은 태안염이라 불릴 정도로 유명하였다. 금강 연안은 어촌이 32곳 있었으며, 하류지역인 금강구는 뱅어의 중심어장이었다. 비인만 지역은 23곳의 어촌이 있었는데, 어종은 조기, 갈치, 도미, 숭어, 가오리, 상어류, 멸치, 새우, 등을 어획하였다. 보령연해 지역은 33곳의 어촌이 입지하고 있었지만, 제염업이 성하여 어업은 크게 발달하지 못하였다. 천수만 지역은 28곳의 어촌, 태안반도 및 가로림만 연안에는 70여 곳의 어촌, 아산만 지역은 55곳의 어촌이 기록되어 있지만, 이들 지역이 농업을 주로 행하였기 때문에 염업이나 간석지를 중심으로 어전어업 정도가 발달한 정도였다. 서해 도서 지역 중 안면도 남쪽 지역은 주목망 어업이 가장 발달한 해역이었고, 금강 하구의 도서지역은 도미의 중심어장이었다.

• 한국항해항만학회지
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• 제29권7호
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• pp.627-634
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• 2005

Gunsan-Janghang Harbor is located at the mouth of Gum River, on the central west coast of Korea The harbor and coastal boundaries are protected from the effects of the open ocean by natural coastal islands and shoals due to depositions from the river, and two breakwaters. The navigation channel commences at the gap formed by the outer breakwater and extends through a bay via a long channel formed by an isolated jetty. For better understanding and analysis of wave transformation process where a wide coastline changes appear due to on-going reclamation works, we applied the spectral wave model including wind effect to the related site, together with the energy balance models. This paper summarizes comparisons of coastal responses predicted by several numerical wave predictions obtained at the coastal waters near Gunsan-Janghang Harbor. Field and numerical model investigations were initially conducted for the original navigation channel management project. We hope to contribute from this study that coastal engineers are able to use safety the numerical models in the area of port and navigational channel design.

• Conservation and Restoration of Cultural Heritage
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• 제1권1호
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• pp.29-37
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• 2012

The West Stone Pagoda at Gameunsaji Temple Site constructed in the 7th century is mainly composed of dark grey dacitic tuff bearing small numerous dioritic xenoliths. These xenoliths resulted in small holes due to differential weathering process from the host rocks. Physical strength of the pagoda was decreased due to weathering and damage caused by petrological, biological and coastal environmental factors. The southeastern part of the pagoda was extremely deteriorated that the rock surface showed exfoliation, fracture, open cavity, granular decomposition of minerals and salt crystallization by seawater spray from the eastern coast. The stone blocks were intersected by numerous cracks and contaminated by subsequent material such as cement mortar and iron plates. Also, the pagoda was colonized by algae, fungi, lichen and bryophytes on the roof rock surface and the gaps between the blocks. As a result of ultrasonic test, the rock materials fell under Highly Weathered Grade (HW) or Completely Weathered Grade (CW). Thus, conservational intervention is essentially required to prevent further weakening of the rock materials.

• 한국자동차공학회논문집
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• 제21권4호
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• pp.153-158
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• 2013

The purpose of this study is to investigate the performance characteristics of the counterflow exhaust heat recovery device for the applied gasoline engines. The EHRS device is installed behind the catalyst. This study investigates the engine warm-up characteristic, the exhaust noise characteristic, the back-pressure characteristic. The engine warm-up characteristics is (load 0%, load 10%, load 20%) in (idle, 1000rpm, 1500rpm, 2000rpm, 2500rpm) conditions by measuring the time it warmed up, coolant temperature ($25^{\circ}C{\sim}80^{\circ}C$) until the performance evaluation is performed. The wide open throttle and the coast down the exhaust noise and the back-pressure characteristic experiment repeated twice. The test conditions is 950rpm~6,050rpm proceed experiment repeated 3-5 times. Load 0% idle conditions except the results improved engine warm-up characteristics. The exhaust noise obtain similar results the BASE+EHRS W/O_FRT_MUFF with BASE and back-pressure to obtain similar results BASE+EHRS W/O_FRT_ MUFF with BASE+EHRS.

• 한국응용과학기술학회지
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• 제26권2호
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• pp.143-150
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• 2009

Today, wastes of much quantity by fast industrialization and increase in population, population concentration etc. of modem society are increasing. Much oyster shell is breeding by character and conduct of oyster-industry for a long time among them. Oyster shell which breed by-product in oyster cultivating industry that specific gravity of domestic seashore cultivating industry is high is causing environmental problem by problem and so on hindrance, nature spectacle's waste and health hygiene on administration if it is pollution of district along the coast fishing ground, number of public ownership being stored in open area in seashore. About new material just-in-time through recycling and he of oyster shell by these problem wide that study. Go forward more and investigate special quality that is oyster shell's physical chemistry red in this research and oyster shell oyster shell which cause several environmental problems developing ability agricultural chemicals that use this encapsulating micro by ability carrier that is environmentally application possibility examine wish to.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.140-143
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• 2004

The west coast of the Korean Peninsula is famous for its large tidal range (up to 9 m) and vast tidal flats. With comparison the sedimentary environments of open and close tidal flat using remote sensing, we select Kanghwa tidal flat and Hwang-Do tidal flat in Cheonsu Bay. Prior to surface sediment discrimination using remote sensing, sedimentary environments including intertidal OEM, hydraulic condition, and relationship between grain size and various tidal condition are investigated. Remote sensing has the potential to provide synoptic information of intertidal environments. The objectives of this study are: (i) to generate an intertidal digital elevation model (OEM) using the waterline method of Lansat TM/ETM+, (ii) to investigate the tidal channel distribution using texture analysis, and (iii) to analyze the relationship between surface grain size by using in-situ data and intertidal OEM and tidal channel density by using high-resolution satellite data such as IKONOS and Kompsat EOC. The results demonstrate that satellite remote sensing is an efficient and effective tool for a surface sediment discrimination and long term morphologic change estimation in tidal flats.

• 한국의상디자인학회지
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• 제5권2호
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• pp.31-46
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• 2003

The purpose of this study was to explore the ways of improving Korean apparel firms' competitiveness by examining the Korea's number one trading partner U.S. apparel industry. Especially, the Los Angeles area apparel industry which is the second largest and the primary market center on the west coast was analysed. The following strategies are suggested to Korean apparel firms to function more effectively in incleasingly competitive U.S. markets: l)Basics can be produced in lower wage countries meanwhile quick turnaround and high quality works can be produced either in Korea or U.S. 2)Manufacturers might try to have direct relationship with powerful retailers who have their own private labels of store-brand lines. 3)Apparel companies can open market showrooms in the California Market Center. For small firms they can contact with independent representatives who receive commissions for showing lines for manufacturers or rent space for showing the lines during market weeks. 4)Apparel firms can contact buying offices to introduce their products to retail buyers. 5)Korean firms can contact Korean-American apparel firms to gain easy access to U.S.Market.

• 수산해양기술연구
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• 제51권4호
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• pp.484-492
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• 2015

The purpose of this study is to compare the ichthyofauna between the eelgrass bed waters located in the open sea and the nearby sea free of eelgrass, and this study collected a total of 26 species. Comparing the fish collected on the eelgrass bed (St.2) of Geomun-do coast with the fish collected on the coastal waters (St.1) void of the nearby eelgrass bed, the fish collected from the eelgrass bed included 19 species, 413 individual with 16,110.6g in weight while the fish collected from the coastal waters void of the eelgrass bed included 19 species, 290 individuals with 12,961.5g in weight. Accordingly, it was found that the population size and biomass of the fish collected from the eelgrass bed were higher than the coastal waters void of the eelgrass. This study could identify that diversity, richness, evenness index except dominance were also much higher even in the result of cluster analysis.

• 한국항해항만학회지
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• 제34권10호
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• pp.793-797
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• 2010

근해의 어족자원 고갈 및 수질오염은 수산양식 산업에 큰 영향을 미친다. 이러한 문제점을 해결하기 위하여 근해에서 외해로 양식장이 이동하고 있다. 외해 양식장은 근해보다 해상환경에 강인하게 개발되어야 하며, 안정적인 양식장 운영을 위해 원격 자동먹이 공급장치가 필요하다. 본 논문은 해상의 양식장에 적합한 원격 먹이공급시스템에 관하여 기술하고자 한다. 어류는 수온 및 어체 중량에 따라 먹이를 먹는 양이 변화한다. 해상 양식장의 경우 육상에 비하여 온도 변화가 크게 일어난다. 본 논문은 수온 및 어체 중량에 따라 먹이량을 계산하고 자동으로 먹이를 공급하는 시스템을 연구하였다. 모형을 활용한 먹이 공급 장치의 성능을 실험하였다.

• Journal of the korean society of oceanography
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• 제37권3호
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• pp.144-153
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• 2002

This is a review paper, assessing progress reported in a Special Issue (Prandle and Lane, 2000) of Coastal Engineering focusing on simulation of SPM in the North Sea, against issues over a diverse range of shelf seas and their coastal margins. The broad objectives of reproducing the characteristics of sediment fluxes off an open coast and relating these to tidal and wave forcing were achieved. However, accurate computation of these fluxes remains sensitive to largely empirical coefficients used in determining erosion and deposition rates. Bed roughness strongly influences both these coefficients and the associated near-bed current magnitudes (including wave impact thereon). Bed roughness can change significantly over a tidal cycle and dramatically over seasons or in the course of a major event. Accurate simulation of sediment fluxes on a day-to-day basis is constrained by dependency on the initial distribution of mobile sediments. The latter depends on rates and locations of original sources and the time history of preceding events. Remote sensing via aircraft could provide data for assimilation into such models to circumvent these constraints. The approaches described here can be readily applied to other coastal regions to indicate the likely distributions and pathways of known sediment sources. However quantitative simulations will require an associated observational programme. A subsequent stage is to understand the evolving balance between the forecasted sediment movement - the resulting morphological adjustments and thence modifications to the prevailing tidal current and wave regimes.