• Journal of Microbiology and Biotechnology
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• 제28권5호
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• pp.816-820
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• 2018

The stringent response (SR), which is activated by accumulation of (p)ppGpp under conditions of growth-inhibiting stresses, plays an important role on growth and virulence in Vibrio cholerae. Herein, we carried out a genome-wide screen using transposon random mutagenesis to identify genes controlled by SR in a (p)ppGpp-overproducing mutant strain. One of the identified SR target genes was flaC encoding flagellin. Genetic studies using flaC and SR mutants demonstrated that FlaC was involved in bacterial growth, toxin production, and normal flagellum function under conditions of high (p)ppGpp levels, suggesting FlaC plays an important role in SR-induced pathogenicity in V. cholerae.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2022년도 추계학술대회
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• pp.160-161
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• 2022

Hydrogen is bridge fuel with high energy content and environmentally friendly to satisfy the stringent IMO regulation relating to greenhouse gas (GHG) emissions. There is growing interest in hydrogen in numerous nations and regions illustrated by an extensive range of research and development in technology. Regarding maritime applications, researchers have recognized the utilization of hydrogen as a fuel for fuel cells, a device that converts the chemical energy of the fuel to electrical energy. Solid oxide fuel cell (SOFC), with high working temperature, is easy to combine with the waste heat recovery cycles/devices to increase output power and thermodynamic performances as well. Furthermore, the cold energy from liquid hydrogen supplied to SOFC can also be used to generate more power. In this study, we proposed a SOFC integrated system with the idea of combining the waste heat recovery from the SOFC exhaust stream and cold energy utilization from LH₂. The designation is aimed to target small-scale vessel which uses electric propulsion for short distances voyage.

• 한국사회복지학
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• 제60권3호
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• pp.129-150
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• 2008

본 연구는 노인장기요양보험제도 2차 시범사업 결과를 바탕으로 우리나라 노인의 요양시설 서비스 이용에 영향을 미치는 요인을 탐색해 보고자 하였다. 이론적 모형으로는 앤더선과 뉴만(Andersen and Newman)의 행동주의 모델을 토대로 하여 영향요인을 구분하였으며, 연구방법은 의사결정분석을 이용하였다. 분석결과 서비스 이용에 가장 큰 영향을 미치는 것은 대상 노인의 서비스 이용의향이었으며, 이러한 선행요인 다음 중요한 요인으로 자원 요인(수발자 있음 및 동거가족 여부)으로 나타났다. 욕구요인으로는 인지장애가 있는 경우, 치매로 인한 문제행동이 있는 경우, 기본적 일상생활수행능력에 있어 완전도움을 받아야 하는 경우로 나타났다. 이러한 분석결과는 앤더슨과 뉴만의 행동주의 이론의 과정을 그대로 보여주고 있음을 알 수 있는데, 즉 선행요인과 자원요인에 의해 서비스 이용형태가 달라지며, 이러한 선행요인과 자원요인은 욕구요인과 결합하여 실제 서비스 이용에 영향을 주는 것으로 나타났다. 이를 통해 본 연구는 시설 서비스 이용 대상자의 욕구요인을 정확히 파악하여 이에 적절한 서비스 내용을 구축하고 지역사회 내 시설서비스 이용노인을 선별하는데 기초 자료를 제공하는데 기여하고자 한다.

• 한국실내디자인학회논문집
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• 제16호
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• pp.142-152
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• 1998

As a rapid supply of a culture facility the change of living style bring on needs about storage space in the residence space. This study choose Hong Je Dong-Byuk San 4 type apartment house which was built in 1990 as research target and we selected 4type of a total 12house and we choose LDK as a research target that is high in a requirement and utilization other space is excluded in this study. We can expect that the apartment house will be differed with area of living space of apartment house in the requirement of storage space. Small apartment house is requried various storage planning because of confined living space But big apartment houses required storage planning of simple type because it have already storage space. So we have to do efficiency storage planning because of limited space in the apartment house. Base on this results we will show storage space according to the type of pyeong. So this study show proper storage type according to the scale of apartment house,.

• 대한교통학회:학술대회논문집
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• 대한교통학회 1996년도 제3회 한-중 국제학술회의
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• pp.131-137
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• 1996

This paper discusses the necessity, strategy and objectives of the rail transportation recently developed in Shanghai. The objective should not be regarded just as a term project, but should be taken as an urgent mission with the 21st century, Shanghai should possess a network of about 100km of rail transport lines. To this end, the following measures are suggested : grade separation of all lines on elevated structures ; developing the rail car industries ; full utilization of all available transportation facilities ; optimizing the use of the space resources of highways ; bringing into play the initiatives of all parties concerned. Recently, it has become a popular consensus that the development of high-speed, safe, punctual, comfortable, non-pollution rail transport with large capacity is the best and only solution to Shanghai urban transportation. In this respect, this dissertation deals with the development strategy for current Shanghai rail construction, together with the infractructure in Shanghai, positioning the developing target; meanwhile, some proposals and solutions to hit this target will be put forward for the reference of leaders and experts.

• 수산해양교육연구
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• 제20권3호
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• pp.508-519
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• 2008

Hot air drying is a method that let moistures evaporate by heat exchange between heating air and dry target. This way is dominating more than about 70% of dryers that the use extent is wide fairly, and is established in domestic than dryer that use conduction or radiation etc. Most of research about drying had been emphasized in size of device through analysis for these dry phenomenon plain, heating topology, and aspect of form and so on by dry target's special quality, and research about device development or waste heat withdrawal technology in energy utilization efficiency side is slight real condition. Therefore, in this study, Investigated numerically about thermal efficiency elevation that is leaned against as that change the temperature of inlet and outlet in heat exchanger of the hot air drying tower.

• 한국통신학회논문지
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• 제25권9A호
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• pp.1340-1347
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• 2000

The international mobile telecommunication-2000(IMT-2000) system can support not only the non-realtime multimedia traffic such as data such as data image but also the realtime multimedia traffic such as voice, video. In the paper we propose multicode allocation and handoff schemes for efficient transmission of realtime and non-realtime data in cdma2000. In those schemes the bandwidth of target cell is reserved based on moving direction of mobiles to support QoS of realtime multimedia data and the reserved bandwidths is used by the non-realtime mobiles of the target cell until the mobiles want to perform hadoff. Our framework is able to guarantee QoS continuity of realtime multimedia data and carries the maximum number of subscriber. System performance is evaluated and compared with conventional scheme considering transmission delay channel utilization and blocking probability by computer simulation.

• 문화기술의 융합
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• 제10권3호
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• pp.861-864
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• 2024

모터로 다수의 롤러를 제어하여 대상 제품을 이송하는 자체 구동 롤러 컨베이어 시스템은 물류의 분기 및 합류, 대상 제품의 정렬 제어에 적합한 물류 시스템으로서 식품 제조 공정을 중심으로 활용도가 높아지고 있다. 본 논문에서는 유니티 소프트웨어를 활용하여 자체 구동 롤러 컨베이어 시스템의 3차원 그래픽 모델링 기반 시뮬레이션 환경을 구축하고, 대상 제품이 시간적으로 불규칙하게 공급되는 상황에서 시스템을 구성하는 롤러의 제어에 의해 일정한 간격을 유지하도록 정렬시킬 수 있는 기법을 제안하였다. 시뮬레이션 결과 대상 제품의 위치를 파악하는 센서데이터를 바탕으로 롤러를 구동하는 모터를 제어함으로써 제품의 효과적인 정렬이 가능함을 확인하였다.

• 한국에너지공학회:학술대회논문집
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• 한국태양에너지학회, 한국에너지공학회 1993년도 춘계 공동학술발표회 초록집
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• pp.20-32
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• 1993

Although the importance of agricultural sector decreased over the last several decades because of the economic growth in Korea led by the development of manufacturing sector, the biomass energy resources such as urban wastes, industrial wastes including agricultural residues emerged recently as a major target of development mainly because of environmental issues. (omitted)

• 대한생식의학회:학술대회논문집
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• 대한불임학회 2006년도 The 5th Biannual Meeting of Pacific Rim Society for Fertility and Sterility
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• pp.168.1-168.1
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• 2006