• Journal of Microbiology and Biotechnology
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• 제12권4호
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• pp.699-701
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• 2002

The current study demonstrates the ability of the marine cyanobacterium Oscillatoria willei BDU130511 to disinfect raw sewage. Within a holding time of 3 h under laboratory conditions, the organism drastically reduced in the total bacterial and coliform counts at various pH levels, in both unbuffered and buffered sewage, thereby suggesting a potential role for cyanobacteria in wastewater treatment.

• 수산해양교육연구
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• 제17권1호
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• pp.86-105
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• 2005

The plan of developing a fishing village and port will be indirectly funded by the government. In the short term, there will be five different multi-functional fishing village models which are based on the first industry to attach to the third industry of marine sports experience tourism. In the long run, they have to be reached gradually. The popular scenic spot of the marine sports experience tourism is made by human resources and fundamental installations considering that it must be done in unpolluted water. It is necessary to separate the fish harbor into two sides. One side is an existing fishing industry. The other side is made up of several pontoons for the marine sports equipment of the marine mooring. It is necessary to build facilities, such as the mooring facility, the storage facility, the repair-check facility, supply-cleaning facility, information booth, accommodations, education facility, and a marine culture exchange facility.

• 한국해양학회지:바다
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• 제25권4호
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• pp.132-159
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• 2020

다학제적인 해양연구가 활발하게 수행됨에 따라 다양한 종류의 해양연구시설·장비가 매년 구입되고 있다. 그러나 해양 연구시설·장비 중, 환경자료 수집 및 시료채취 등에 사용하는 다양한 종류의 현장 관측장비들을 현재의 국가연구시설·장비 표준분류체계로 분류하여 관리하는 데 어려움이 있다. 한국해양과학기술원의 경우 미분류상태로 적절히 관리되지 않는 연구시설·장비가 약 30% 정도이다. 본 연구에서는 해양 연구시설·장비를 특성에 따라 중분류군 7개와 소분류군 36개로 분류하고, 국가연구시설장비 표준분류체계에 의해 해양 연구시설·장비를 효율적으로 관리하기 위해 '환경관측/분석장비'라는 대분류군을 국가연구시설장비 표준분류체계에 추가하기를 제안한다. 그리고 해양 연구시설·장비 중 실험실에서 운영하는 장비들은 기존의 국가연구시설장비 표준분류체계에 따라 분류할 것을 제안한다. 이를 통하여 우리나라 전체의 해양관련 연구시설·장비를 체계적으로 분류하여 효과적으로 관리할 수 있을 것으로 기대한다.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2011년도 전기공동학술대회 논문집
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• pp.192-192
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• 2011

For the safety of vessels sailing Marine Transport Facility announces sea route, reefs or shallow water. Photovoltaic, independent power system, installation in the general Marine Transport Facilities to be used in the marine lantern. Due to install of communications, controls, power consumption inceases. And the weather of cloudy day or rainy, generation of electricity is decrease. Recently, power system of marine facility using a hybrid generation system, photovoltaic generation system and wave power generation system. But increase of adhered shellfish inside the water column, is the cause of the reduction of efficiency. So study was conducted to Single channel AFS(Anti-Fouling system). In this paper we offer the Multi channel AFS for Marine Transport Facility and have simulated. Improve the accuracy of the research, we using the result of anode, in the experiment were actually in the buoy, is based on simulation. The experimental results is shown every anode's, in the Marine Transport Facility, ionization was conducted identically.

• Journal of Microbiology
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• 제44권6호
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• pp.607-616
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• 2006

Molecular characterization of ten marine cyanobacterial isolates belonging to the order Oscillatoriales was carried out using the phycocyanin locus (cpcBA-IGS) and the 16S-23S internally transcribed spacer region. DNA sequences from the phycocyanin operon discriminated ten genotypes, which corresponded to seven morphotypes identified by traditional microscopic analysis. The cpcB coding region revealed 17% nucleotide variation, while cpcA exhibited 29% variation across the studied species. Phylogenetic analyses support the conclusion that the Phormidium and Leptolyngbya genera are not monophyletic. The nucleotide variations were heterogeneously distributed with no or minimal informative nucleotides. Our results suggest that the discriminatory power of the phycocyanin region varies across the cyanobacterial species and strains. The DNA sequence analysis of the 16S-23S internally transcribed spacer region also supports the polyphyletic nature of the studied oscillatorian cyanobacteria. This study demonstrated that morphologically very similar strains might differ genotypically. Thus, molecular approaches comprising different gene regions in combination with morphological criteria may provide better taxonomical resolution of the order Oscillatoriales.

• 대한조선학회논문집
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• 제54권4호
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• pp.312-320
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• 2017

This paper deals with the development of structural test facility for the strength assessment of marine leisure boat built from carbon fiber reinforced plastics (CFRP) materials. The structural test facility consists of test jig, load application and control system, and data acquisition system. Test jig, and load application and control system are designed to accommodate various size and short span to depth ratios of single skin, top-hat stiffened and sandwich constructions in plated structural format such as square and rectangular shapes. A lateral pressure load, typical and important applied load condition to the plates of the hull structure for marine leisure boat, is simulated by employing a number of hydraulic cylinders operated automatically and manually. To examine and operate the structural test facility, five carbon/epoxy based FRP square plates having the test section area of $1m^2$, which are part of CFRP marine leisure boat hull, are prepared and they are subjected to monotonically increasing lateral pressure loads. In the test preparation, considering the symmetry of the plates geometry, various strain gauges and linear variable displacement transformer are used in conjunction with data acquisition system utilizing LabVIEW. From the test observation, the responses of the CFRP hull structure of marine leisure boat are understood by obtaining load to deflection and strain to load curves.

• 한국실내디자인학회논문집
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• 제22권1호
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• pp.19-27
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• 2013

The objective of this study was to establish Facility classification for military barracks among military facilities. The military barracks are the place where soldiers spend most of their time. Thus, a new type of space in military barracks is required to improve the quality of life of the soldiers and make the military more advanced for national defense. The research method was to derive problems through a survey of the previous literature and case studies and to select target places in the Army, Navy, Air Force, and Marine based on the derived problems. An improvement scheme was proposed by developing criteria for military barracks spaces through a questionnaire survey. The following results were obtained: Facility classification inside of national defense military facility standard should be reorganized. The alternative plan is demanded for some camp which has no need about setting up the office facility. And the study of reasonable facility area after improvementing facility categorization is required.

• Journal of Advanced Marine Engineering and Technology
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• 제29권8호
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• pp.828-833
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• 2005

• 한국항해항만학회지
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• 제31권10호
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• pp.819-824
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• 2007

이 연구는 해상교통안전시설에 관한 운영효과를 분석한다. 해상교통안전시설의 운영효과는 크게 안전편익, 수송편익 그리고 기타편익으로 나눌 수 있다. 안전편익은 해상교통안전시설을 설치 및 운영함으로써 해양사고가 감소됨에 따른 해상교통의 손실회피비용으로 산출된다. 이를 위하여 각 해당 시설에 대한 해양사고 감소율을 산정하고, 손실회피비용의 세부 모델을 구축한다. 또한 이에 대한 각 변수를 정의하고 계산식을 제시한다. 이 모델을 목포청의 항로표지집약관리시스템에 적용하여 안전편익을 산출하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권7호
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• pp.3329-3350
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• 2017

Installing caching and computing facilities in mobile edge networks is a promising solution to cope with the challenging capacity and delay requirements imposed on future mobile communication systems. The problem of optimal facility placement in mobile edge networks has not been fully studied in the literature. This is a non-trivial problem because the mobile edge network has a unidirectional topology, making existing solutions inapplicable. This paper considers the problem of optimal placement of a fixed number of facilities in a mobile edge network with an arbitrary tree topology and an arbitrary demand distribution. A low-complexity sequential algorithm is proposed and proved to be convergent and optimal in some cases. The complexity of the algorithm is shown to be $O(H^2{\gamma})$, where H is the height of the tree and ${\gamma}$ is the number of facilities. Simulation results confirm that the proposed algorithm is effective in producing near-optimal solutions.