• BMB Reports
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• 제35권2호
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• pp.165-171
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• 2002

A serine collagenolytic protease was purified from the internal organs of filefish Novoden modestrus, by ammonium sulfate, ion-exchange chromatography on a DEAE-Sephadex A-50, ion-exchange rechromatography on a DEAE-Sephadex A-50, and gel filtration on a Sephadex G-150 column. The molecular mass of the filefish serine collagenase was estimated to be 27.0 kDa by gel filtration and SDS-PAGE. The purified collagenase was optimally active at pH 7.0-8.0 and $55^{\circ}C$. The purified enzyme was rich in Ala, Ser, Leu, and Ile, but poor in Trp, Pro, Tyr, and Met. In addition, the purified collagenolytic enzyme was strongly inhibited by N-P-toluenesulfonyl-L-lysine chloromethyl ketone (TLCK), diisopropylfluorophosphate (DFP), and soybean trypsin inhibitor.

• 한국항만경제학회지
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• 제21권3호
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• pp.83-113
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• 2005

In this study, for purpose of searching for measures to lower the logistics costs which is one of the most difficulties for the small-medium sized manufacturers in Pusan and Kimhae, those manufacturers were surveyed with questionnaire about the facts in the export logistics costs, difficulties related to the costs, and measures they thought for lowering the cost. Taking account of findings from the survey, the comprehensive measures of saving the export logistics costs were to be proposed. In the surveyed manufacturers, the problems they thought over export logistics costs lied in short logistics information and transportation-related difficulties in cargo and distribution, insufficient standardization in packaging and the shortage of material handling equipments in unloading. In transportation, frequent non-fulfillment of in-time shipment, cost increase including over consumption of transportation time due to traffic jam, and the biased heavy use of inland transportation were pointed out as problems. In customs clearance, logistics information, and marine insurance, addressed were complexity in custom clearance and bonded transportation procedures, and the shortage of software and hardware to construct logistics information system.

• 한국시뮬레이션학회논문지
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• 제6권1호
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• pp.97-108
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• 1997

For the purpose of decreasing economic loss from the traffic jam, a car route guidance system efficiently utilizing the existing roads has attracted a great deal of attention. In this paper, the search algorithm for optimal path and alternative paths, which is the main function of a car route guidance system, was presented using evolution program. Search efficiency was promoted by changing the population size of path individuals in each generation, applying the concept of age and lifetime to path individuals. Through simulation on the virtual road-traffic network consisting of 100 nodes with various turn constraints and traffic volumes, not only the optimal path with the minimal cost was obtained, avoiding turn constraints and traffic congestion, but also alternative paths with similar costs and acceptable difference was acquired, compared with optimal path.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2008년도 춘계학술발표회
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• pp.65-66
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• 2008

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2582-2584
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• 2001

In this paper, this system which constantly control rotation speed of compressor is designed to use in idling state as traffic jam. Also this system is designed to improve reduction of cooling efficiency when sloping and starting a bus. The estimation of designed system in this paper is performed in the laboratory where KS-R-1053 is satisfied. We come to the conclusion that this system is more excellent than the present system in point of cooing ability and response characteristic of controller.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2003년도 춘계학술발표논문집 (상)
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• pp.91-94
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• 2003

지식정보화시대인 21세기는 문화가치의 중요성이 부각되고 있으며, 전통문화에 첨단기술을 적용(CT: Culture Technology)하여 디지털화하고 이를 대중화, 상품화하는 작업이 활발히 진행되고 있다. 본 연구는 조선시대 궁중에서 왕비가 손수 뽕을 따고 누에를 쳐서 양잠을 장려한 궁중의식으로 위민정신과 민본사상이 담겨져 있는 친잠례(親蠶禮)와 친잠의궤(親蠶儀軌)를 동영상과 3D 애니메이션으로 제작하고, 멀티미디어 개발 시스템을 통하여 하이퍼미디어 정보 서비스를 제공한다. 이를 통하여 한국 전통문화의 아름다움을 세계에 알린다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2012년도 추계학술대회
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• pp.128-130
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• 2012

One of the hot issues on GNSS might be that China declared to broadcast the signal of the new Global Navigation Satellite System called Beidou-Compass in December 2011. The multi-GNSS systems with the existing GPS and GLONASS consist of more than 100 GNSS satellites and transmit their signals in near future. Many benefits are expected in accuracy, availability, integrity and increasing anti-jam performance. In this presentation, we have mainly investigated the latest issue for multi- GNSS and discussed spectrum analysis as well as the accuracy improvement issue. The use of the modern weapon system based on satellite navigation information was also briefly investigated in warfare.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2004년도 가을 학술발표논문집 Vol.31 No.2 (1)
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• pp.184-186
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• 2004

최근에 이르러 온톨로지 (Ontology) 및 시맨틱 웹 (Semantic Web) (1) 에 대한 연구가 활발히 진행됨에 따라 이들을 처리할 수 있는 에이전트 시스템의 중요성 또한 부각되고 있다. 이러한 에이전트 시스템은 규칙(Rule)을 기반으로 하여 해당 조건을 만족시키는 경우에 규칙에 정의된 행동을 실행하도록 설계된다. 하지만 이러한 시스템이 않은 양의 규칙과 조건을 처리하는 경우 특정한 조건에 맞는 규칙을 검사하는 과정에서 많은 오버헤드가 걸리게 된다. 이러한 시스템의 단점을 보완하고자 사용되는 것이 RETE 알고리즘으로서 각 조건과 규칙들을 빠르게 검색할 수 있는 네트워크를 구성하고 특정 조건이 만족되는 경우 이를 창조하는 규칙들의 목록을 즉시 얻어낼 수 있게 된다. 본 논문에서는 JAM 에이전트 시스템에 RETE 알고리즘을 적용시키고 이를 통해 더욱 효율적인 에이전트 시스템을 구성하고자 한다.

• KIEAE Journal
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• 제7권5호
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• pp.3-11
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• 2007

Nowadays, housing density in a city is getting higher, and this trend is expected to continue in the future. Therefore, Skyscraper is considered as future alternative architecture beyond symbolic meaning in aspect of demand and supply of urban land. However, skyscrapers which were newly built in Korea have many problems such as consumption of enormous amounts of energy, destruction of natural environment, and traffic jam. And from now on, environment-friendly development of skyscraper is urgently needed. However, plans or evaluation standards, which take account of the environment-friendly aspect of skyscraper, leave much to be desired. And especially it is hard to find environment-friendly skyscrapers. Therefore, this study aims to find realistic alternative solutions of environment-friendly skyscraper through analysis of the works of Ken Yeang who has been known as bio-climatic architect and tried to apply environment-friendly plans to skyscraper.

• Journal of Mechanical Science and Technology
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• 제19권6호
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• pp.1268-1279
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• 2005

The current method for pavement sign marking operations is labor-intensive and very dangerous due to the exposure of workers to passing traffic. It also requires blocking traffic for a long period of time resulting serious traffic jam. This paper deals with the development of a robotic system for automating the pavement sign painting operations. The robotic system consists of gantry frame equipped with transverse drive rail and automatic paint spray system. The workspace of the gantry robot is extended to one-lane width with the transverse rail system. This research also includes the development of font data structures that contain the shape information of pavement signs, such as Korean letters, English letters and symbols. The robot path is generated with this font data through the procedures of scaling up/down and partitioning the signs to be painted depending on the workspace size.