• 환경생물
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• 제18권2호
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• pp.227-235
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• 2000

As a part of basic investigation to Fishery Purge Project for the Special Administrative in Chollanamdo Province, the sedimentary environmental characteristics of Yoja Bay at 15 stations were studied. The analysis was carried out in July, 1998, through studies of Loss On Ignition (LOI) by depth, Total Sulfide (T-5), Chemical Oxygen Demand (COD) concentrations and Grain-size distribution. The LOI value was found to be 6.20-12.20% (mean of 8.89%), with the neighboring Sunhakri and Haksanri areas showing slightly higher values. These values were similar to the LOI values observed in the Hansan-Koje Bay and Jinju Bay areas on the southern coast of Korea. T-S and COD concentrations were found to be, respectively, 0.060-0.104 mg/gㆍd (mean of 0.052 mg/gㆍd) and 5.53-29.71 mg/gㆍd(mean of 13.24 mg/gㆍd), not exceeding eutrophication limits. T-S concentration was especially high at stations close to the central areas of the bay and inland areas, which caused by organic matter input from the nearby agricultural areas. COD concentration was very high at stations nearby the bay entrance and Doonbyungdo, but the mean value was lower than that of Hansan-Koje Bay. This leads us to believe that the level of pollution in Yoja Bay is not significant. The prevailing sediment composition was mud, consisting of 61.38% silt and 34.87% clay. [Sediments in Yoja Bay, Loss On Ignition, Total Sulfide, Chemical Oxygen Demand, Grain-Size Distribution].

• 수산해양교육연구
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• 제23권3호
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• pp.477-485
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• 2011

For the identifying of spatial distribution pattern, Moran's Index(I) which has the range of values from -1 to +1 is common method for the spatial autocorrelation measurement. When I is close to 1, all neighboring features have close to the same value, indicating clustered pattern. Conversely, if the spatial pattern is dispersed, I is close to -1. And I closing to 0 means spatially random pattern. However, this index equation is influenced by how defining the neighboring features for target feature. To compare and understand the difference of neighborhood definition methods, fixed distance neighboring method and Gabriel Network method were used for I. In this study, these two methods were applied to two marine environments with water quality data. One is Gwangyang Bay which has complex geometric coastal structure located in South Sea of Korea. Another is Uljin area adjacent to open sea located in east coast of Korea. The distances between water quality observed locations were relatively regular in Gwangyang Bay, however, irregular in Uljin area. And for the fixed distance method popular Arc GIS tool was used, but, for the Gabriel Network, Visual Basic program was developed to produce Gabriel Network and calculate Moran's I and its Z-score automatically. According to this experimental results, different spatial pattern was showed differently for some data with using of neighboring definition methods. Therefore there is need to choose neighboring definition method carefully for spatial pattern analysis.

• 한국항해항만학회지
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• 제40권3호
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• pp.113-120
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• 2016

선박에 싣기 위하여 컨테이너 장치장에서 반출하는 컨테이너 상단에 다른 컨테이너들이 장치되어 있다면 위의 컨테이너들을 임시로 옮기는 작업이 필요한데 이런 작업을 재취급이라 하며, 이로 인하여 장치장의 생산성은 떨어지게 된다. 장치장에서 반출 작업을 수행할 때 재취급 작업을 하지 않도록 하기 위하여, 적하 계획이 수립된 후 선박이 도착하기 전까지의 유휴 시간을 이용하여 컨테이너들을 미리 정리하는 작업을 재정돈 작업이라고 한다. 보통의 경우 베이내의 이동만으로 재정돈 작업 계획을 수립하는데, 컨테이너가 장치된 상태에 따라 너무 많은 시간을 사용한 후 결국 해를 구하지 못하는 경우가 발생한다. 본 논문에서는 이웃한 베이의 상단을 임시 저장 공간으로 활용하여 재정돈 작업 계획을 수립할 수 있는 방안을 제안한다. 이 방안이 복잡한 장치상태에서도 허용된 시간 내에 작업 계획을 수립할 수 있다는 것을 보이기 위하여, 수치실험을 통해 제안한 방안의 성능을 평가하였다. 다양한 베이를 대상으로 실험한 결과 복잡한 베이에 대하여 허용된 시간 내에 유효하고 효율적인 계획을 수립할 수 있음을 확인하였다.

• 유통과학연구
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• 제14권5호
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• pp.107-114
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• 2016

Purpose - Loading can decrease the productivity due to the possibility of carrying out with the opposite order of storage in container terminal. When the container is to be taken out, it is needed to move the container stacked upon the container to be carried out to other place temporarily. It is called as rehandling. Remarshalling, with the loading plan, is the arranging the containers before the ship arrives in order to avoid the rehandling during the carrying out. The present study tried to find out the factors affecting the efficiency when building the remarshalling plan with the utilization of neighboring storage space as a outer slot, and analyzed the efficiency of several remarshalling algorithms with the combination of those factors. Research design, data and methodology - The present study used, when the remarshalling plan is prepared for utilizing the outer slot, the simulation methods in order to compare the efficiency of the remarshalling algorithms which made with the factors affecting the efficiency. The factors affecting the efficiency are the method of making the child node, method of arrangement, and possibility of application of FIX. In order to analyze the affecting factors on the efficiency, several algorithms are prepared with the combination of production of the child node and the arrangement method with the availability of FIX application. With this algorithm, the effect of the factors on the efficiency after building up of remarshalling plan with the target on the bay with 10 rows, 8 columns, and 10 indices. Results - The method of rearrangement and making of a child node as the factor affecting the efficiency of remarshalling utilization of the outer bay were studied. It is efficient to combine the method of making a child node with MCS in order to reduce the number of moving the containers. For reducing the time in carrying out, it was found that all arrangement methods should be combined with RCS for the efficiency. The result of experiment shows the application of FIX with good result in case of succession ratio. In addition, when FIX was not applied, all of the most combinations resulted in short time in remarshalling. As a result, it can be concluded that the algorithm with proper combination of making the child node and the arrangement can increase the job efficiency based on the importance. Conclusion - The present study suggested and analyzed the algorithms with the combination of the arrangement method, the making of child node, and FIX. It is needed to develop the algorithm to judge the possibility whether the best remarshalling plan can be built or not within the bay in order to find a better method between the two cases such as within the bay and outer the bay. As a method for extending the study on the factors affecting the efficiency, it is possible to find out the way to build the remarshalling plan within the permitted time under any storage situation.

• 한국농촌건축학회논문집
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• 제20권2호
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• pp.11-18
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• 2018

The purpose of this study is to analyze the structure and use change of the private space according to the balcony expansion and use it as the data of plan design. According to Bay, front length/width ratio and the change of balcony space before and after expansion of space organization of house units were analyzed. Common characteristics of Flat type and Tower type are an increase of the frontage length of house units in an apartment, an increase of the number of front bay, and an increase of integrated LDK focusing on living room. A difference is that Flat type shows high frontage ratio, Bay figure, and spatial arrangement favorable to front openness and lighting. Flat type shows higher area distribution than Tower type in LDK area distribution located in at the plane center. Spatial expandability and visual openness of Flat type are more beneficial than those of Tower type in the planning, and a balcony extension of house units has developed to direction to open more. Tower type creates various block images through a combination of house units focusing on the core. Uses after balcony expansion are area expansion of a balcony-neighboring room, storage space, expansion and function improvement of the variable range, and specialized space different from a neighboring room. In addition, there is no escapable space except for a shelter, so unit plan should be prepared to prevent using it other space of a shelter and to solve moving line of two-way horizontal refuge and vertical refuge.

• 한국수산과학회지
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• 제36권4호
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• pp.365-371
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• 2003

The reared fries of black sea bream, Acanthopagrus schlegeli were released in Gamak Bay and initial adaptation to the environment was evaluated. Thirty thousand fries were marked with magnetic tag, released and recaptured and its stomach content were analysed; the neighboring zooplankton, beuthic algae and other young fishes were investigated. The fries were released on July 30, 2001 in summer season. Water temperature of surface and bottom were $24^{\circ}C\;and\;21^{\circ}C,$ respectively. $Chlorophyll\;\alpha$ content was 4.5 ${\mu}g/L$ with high primary production. Salinity was $32.0-32.5\%_{\circ}.$ Water depth of releasing site was about 30 m. The sea jungle was formed at the first point of releasing and it kept the fries for about 3 days in the bay with plenty of food organisms within 5 m depth. Stomach analysis of the fries revealed that real feeding started from the 15 days after releasing and full feeding took place after the tenth day.

• 대한조선학회논문집
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• 제29권1호
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• pp.55-60
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• 1992

본 논문에서는 선형포턴셜이론을 이용하여 제한수로에 놓인 2차원 주상체에 작용하는 동유체력과 운동응답의 특성을 고찰하였다. 유체영역을, 수로입구영역 그리고 수로영역으로 구분하여 우선 각 영역에서 해를 독립적으로 구한 다음 이를 인접영역의 해와 정합시켜 완전해를 구하였다. 수로의 길이보다 대략 4배가 긴 파장의 입사파는 수로내 유동을 공진시킨다. 이때 주상체에 작용하는 부가질량은 음의 값을 갖게 되며 동유체감쇠력은 급격한 변화를 보이고 주상체의 수평운동은 최대가 됨을 밝혔다.

• Animal cells and systems
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• 제12권4호
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• pp.279-286
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• 2008

Development and distribution of larval Dungeness crab, Cancer magister Dana, 1852 were investigated in southeastern Alaska from late May to mid-September in 2004. Larvae were collected during daylight hours at three inner and two outer Glacier Bay stations at the two different depths in the water column, above and below the thermocline. Larval density decreased dramatically for three larval stages, zoeae I(ZI), zoeae IV, and zoeae V(ZV), but relatively little for zoeae II and zoeae III. ZI predominated at all stations in late May and were collected until late July. Larval stages progressed seasonally from ZI to ZV and density decreased from ZI through ZV. The densities of each zoeal stage at the inner and outer bay stations and at the shallow and deep depths were similar. The density of each larval stage above(shallow) and below(deep) the thermocline and between inner and outer bay stations were not significantly different. The occurrence of larval Dungeness crab is dramatically later than in other parts of the species range, in that larvae appear in abundance beginning in late May. The pattern of spatial distribution of larval stages for the inland waters of Alaska was also markedly different than the patterns reported for Dungeness crab larvae from other parts of the species range, in that the early and intermediate stages occurred within inland waters; from British Columbia to California these larval stages increase in abundance with distance offshore.

• 한국항만경제학회지
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• 제31권3호
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• pp.121-140
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• 2015

본 연구는 여수시권의 해양관광교통체계 구축 방향을 강구하였다. 우리나라 남해안의 해양관광을 활성화시키기 위해서는 중심에 위치한 여수시의 효율적인 관광교통체계 구축이 필요하기 때문이다. 연구의 진행은 여수시권의 해양관광교통체계의 문제점을 분석하고, 이를 미국의 베이지역(Bay Area)과 비교하여 개선방안을 도출하였다. 연구 과정에서 여수시권의 해양관광 지원 교통체계는 광역교통과 도시교통 및 교통정보 체계 등에서 베이지역에 비해 미흡하게 평가되었다. 이에 따라 본 연구는 광역교통수단과 도시교통수단을 해양관광교통수단과 연계시키는 지원교통체계의 구축방향을 제시하였고, 추가적으로 여수시 인접지역과의 해양관광 공조 지원교통체계 구축방향도 다루었다. 또한 해양관광 지원 통합교통정보 제공방향도 제안하였다. 이 같은 해양관광교통 통합지원체계 구축을 통해서 교통비용과 통행시간의 절감이 가능하게 된다.

• 한국수산과학회지
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• 제8권3호
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• pp.121-126
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• 1975

1) 클로로필 a 량은 마산만이 $4.10-25.16\;mg/m^3$ 범위에 평균 $13.27\;mg/m^3$로 가장 높은 분포를 보였으며 진해화학공장이 위치한 행암만은 $0.52-8.27\;mg/m^3$에 평균 $4.29\;mg/m^3$로 인근 낙동강 하구의 $3.12-5.73\;mg/m^3$ 보다 평균 $4.46mg/m^3$보다 낮았으며 굴양식장이 많은 거제만이 $0.65-5.00mg/m^3$에 평균 $2.23mg/m^3$로 가장 낮은 분포를 보였다. 8) 영양염류의 N/P값이 12이상되는 마산만과 낙동강 하구에서는 영양염량의 증가와 클로로필 a 량의 증가는 비례하고 있었으나 진해화학 공장여수의 영향이로 N/P값이 2 이하로 낮은 행암만 및 진해만 내해역에서는 영양염류량의 증가와 클로로필 a 량과는 일정한 상관관계가 없었고 인산염량이 과도하게 많은 행암만에서는 오히려 클로로필 a 량이 더 적은 결과을 보였다. 3) 마산만에서는 부영양화로 인해 적조가 발생하여 저층에는 빈산소 수괴를 형성하고 있었다.