• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권8호
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• pp.3182-3202
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• 2015

Flexibly expanding the storage capacity required to process a large amount of rapidly increasing unstructured log data is difficult in a conventional computing environment. In addition, implementing a log processing system providing features that categorize and analyze unstructured log data is extremely difficult. To overcome such limitations, we propose and design a MongoDB-based unstructured log processing system (MdbULPS) for collecting, categorizing, and analyzing log data generated from banks. The proposed system includes a Hadoop-based analysis module for reliable parallel-distributed processing of massive log data. Furthermore, because the Hadoop distributed file system (HDFS) stores data by generating replicas of collected log data in block units, the proposed system offers automatic system recovery against system failures and data loss. Finally, by establishing a distributed database using the NoSQL-based MongoDB, the proposed system provides methods of effectively processing unstructured log data. To evaluate the proposed system, we conducted three different performance tests on a local test bed including twelve nodes: comparing our system with a MySQL-based approach, comparing it with an Hbase-based approach, and changing the chunk size option. From the experiments, we found that our system showed better performance in processing unstructured log data.

• 산업경영시스템학회지
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• 제30권2호
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• pp.29-36
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• 2007

This study was concerned about mobile web-service of a VMI in the SCM system. The VMI would be a main module part of the SCM and regarded as very important thing on supply chain. Therefore, it was essential to react in real time of materials production and situation of used auto-part in procurement company. We could find an affordable method to realize the VMI in a web service. The web service has made inter relevant enterprise easy to collaborate because of supporting most operating system and frame-work. Moreover, the use of a mobile tools was guaranteed a product recording and requirement of materials to real time in a rapid changing of production environments. The result of this research was very useful to apply the VMI system in medium and small sized auto parts company. This web service package has programmed the Visual Studio Dot Net 2003 and the MS SQL 2000 as database.

• 한국태양에너지학회 논문집
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• 제27권2호
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• pp.103-109
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• 2007

This study was focused on the establishment of a fundamental DB(database) that is available in the building design process, so we performed the simulation analysis about the energy consumption on the various same volume buildings. Because energy consumption in building is affected by the exterior surface area, the ratio of long/short length in surface and the adjacent internal surface area etc.. For these purpose, we assumed the unit module and made a constructable 16 model buildings which are composed of the 16 unit modules. Then we analyzed the simulation using the TRNSYS 16 and the Seoul weather data. In results, energy consumption in building is more reduced that in case of the smaller exterior surface area, the lower stories building and the larger adjacent surface area etc.. Further study is to be required the sensitivity analysis on the various weather conditions, building shapes and window area etc..

• Bulletin of the Korean Chemical Society
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• 제28권4호
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• pp.561-566
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• 2007

Adenosine kinase (AK) is a ubiquitous intracellular enzyme, which catalyzes the phosphorylation of adenosine (ADO) to adenosine monophosphate (AMP). AK inhibitors have therapeutic potential as analgesic and antiinflammatory agents. A chemical feature based pharmacophore model has been generated from known AK inhibitors (26 training set compounds) by HypoGen module implemented in CATALYST software. The top ranked hypothesis (Hypo1) contained four features of two hydrogen-bond acceptors (HBA) and two hydrophobic aromatics (Z). Hypo1 was validated by 124 test set molecules with a correlation coefficient of 0.905 between experimental and estimated activity. It was also validated by CatScramble method. Thus, the Hypo1 was exploited for searching new lead compounds over 238,819 chemical compounds in NCI database and then the selected compounds were screened based on restriction estimated activity and Lipinski's rules to evaluate their drug-like properties. Finally we could obtain 72 new lead candidates and the two best compound structures from them were posted.

• 조명전기설비학회논문지
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• 제12권2호
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• pp.45-53
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• 1998

본 연구에서는 그래픽통합환경을 갖춘 전력시스템 해석과 운용을 위한 교육 및 훈련용 팩키지를 개발하였다. 개발된 팩키지는 PC에서 운용되며 초보자의 전력시스템교육 및 훈련에 적합하도록 대화식으로 구성되어 있다. 그 구성 요소들로는 첫째, 전력시스템 모델링을 위한 그래픽 편집기. 둘째, 풀-다운 방식의 주메뉴. 셋째, 모의결과의 그래픽 및 동화상 출력 모듈. 넷째, 데이터베이스 시스템. 다섯째, 전력시스템 해석 및 운용의 응용 모듈 등이 있다. 사례 연구를 통하여 제시한 팩키지가 초보자를 위한 전력시스템 해석과 운용에 대한 유용한 교육 및 훈련용 수단일 수 있음을 나타내었다.

• 전기학회논문지
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• 제62권6호
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• pp.818-824
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• 2013

In this study, a novel Graphic User Interface (GUI) software development system is suggested so that it can be applied to diagnose breast cancer with utilizing 3~4.2 GHz microwave radiometric data. The estimated inner and surface temperature values on the patient's right and left breast in terms of microwave radiometry are visualized in HSV color mapping space and their relevant contour regions and lines are depicted by Marching Square graphic algorithm. Also the database system is implemented in terms of patient and diagnostic module to support the medical decisions concerning the breast cancer diagnosis.

• Korean Chemical Engineering Research
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• 제49권6호
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• pp.697-703
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• 2011

축전식 탈염(CDI)은 높은 비표면적을 갖는 전극에 전기화학적 원리로 이온을 흡착하여 제거하는 기술이다. CDI 기술은 낮은 전위에서 작동하기 때문에 에너지 소비가 작고, 전극을 재생할 때 산, 염기 혹은 염을 사용하지 않기 때문에 환경친화적인 기술이다. 본 연구에서 우리는 CDI 기술의 동향을 알아보기 위해 특허와 논문을 조사했다. 데이터베이스는 WIPS와 Scopus를 사용하여 얻었으며 전극기술, 모듈기술 및 응용기술에 따라 조사되었다. CDI의 기술 동향은 연도별, 국가별, 출원인별, 기술별로 조사되었다.

• 한국GIS학회:학술대회논문집
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• 한국GIS학회 1998년도 추계학술대회 발표요약문
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• pp.20-25
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• 1998

본 연구는 광역 하수도계획에 관련된 의사결정을 합리적으로 지원할 수 있도록, GIS의 공간분석 능력과 D/B간의 정보교환 체계 그리고 중력모형의 공간상호작용력 계산구조를 이용하여 광역 하수처리 권역을 설정하였다. 도출된 영향인자는 경제 지표, 사회·정책 지표 그리고 환경지표로 구분되며, 공간정보와 속성정보간의 정보교환 체계는 GIS와 D/B간의 연계를 통하여 구축하였다. 본 연구의 결과는 기존 행정구역 중심의 하수도계획을 수계전반의 경제성과 환경성을 고려한 광역하수도계획으로 전환시킬 수 있는 기반을 형성한다.

• 한국ITS학회 논문지
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• 제13권2호
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• pp.27-33
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• 2014

This paper proposes a gradation image processing method for the development of a Road Sign Recognition Platform (RReP), which aims to facilitate the rapid and accurate management and surveying of approximately 160,000 road signs installed along the highways, national roadways, and local roads in the cities, districts (gun), and provinces (do) of Korea. RReP is based on GPS(Global Positioning System), IMU(Inertial Measurement Unit), INS(Inertial Navigation System), DMI(Distance Measurement Instrument), and lasers, and uses an imagery information collection/classification module to allow the automatic recognition of signs, the collection of shapes, pole locations, and sign-type data, and the creation of road sign registers, by extracting basic data related to the shape and sign content, and automated database design. Image division and merging, which were applied in this study, produce superior results compared with local binarization method in terms of speed. At the results, larger texts area were found in images, the accuracy of text recognition was improved when images had been gradated. Multi-threshold values of natural scene images are used to improve the extraction rate of texts and figures based on pattern recognition.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.339-342
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• 2008

최근 이상기후 등의 영향으로 도시침수로 인한 인적 물적 피해가 증가하고 있다. 침수위험지역 관리를 위해 SWMM 등의 유출모형과 GIS (Geographic Information System) 기술을 결합하여 위험지역의 정보를 사전에 제공하려는 연구가 활발히 진행되고 있다. 하지만 대부분의 침수위험지역 관리 시스템의 GIS는 유출모형 등을 통한 수문분석결과를 가시화하는 정도로 활용되고 있으며, 침수관리 시스템을 통한 침수위험지역의 예방/대응 등의 통합된 방재정보를 제공하지 못하고 있다. 따라서 본 논문에서는 도시침수 통합관리 시스템 구축을 위한 모듈로 공간DB기반의 Map Viewer 시스템의 프로토타입을 설계하고, Shape File 포맷의 지도정보를 공간DB로 변환하는 모듈을 구현하였다.