• Genomics & Informatics
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• v.8 no.2
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• pp.94-96
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• 2010

Integrating various pathway data collections to create new biological knowledge is a challenge, for which novel computational tools play a key role. For this purpose, we developed the Java-based conversion modules KGML2SBML and KGML2BioPAX to translate KGML (KEGG Markup Language) into a couple of common data exchange formats: SBML (Systems Biology Markup Language) and BioPAX (Biological Pathway Exchange). We hope that our work will be beneficial for other Java developers when they extend their bioinformatics system into SBML- or BioPAX-aware analysis tools. This is part of our ongoing effort to develop an ultimate KEGG-based pathway enrichment analysis system.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04b
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• pp.1265-1268
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• 2002

최근에 전자상거래가 보편화되면서 전자경매를 통한 거래가 급증하고 있다. 그러나, 기존 전자경매시스템들은 낙찰 예정가를 판매자에게만 의존하고 있어 물품의 낙찰가가 낮게 결정되거나 유찰되는 경우가 많다. 본 논문에서는 이러한 문제를 해결하고자 판매자에게 가장 적절한 낙찰 예정가를 자동으로 추천하는 XML기반의 경매 시스템을 구현하였다. 이 시스템은 과거의 경매 기록과 인터넷 전자상거래 사이트의 가격 정보로부터 사례 유사도를 적용하여 적합한 예정가를 자동으로 생성하므로 유찰을 줄이고 물품에 대한 낮은 평가를 방지할 수 있다. 또한 이 시스템은 최근의 웹 표준 기술들인 XML스키마, XSL, DOM 등을 이용하였으므로 기존의 시스템들에 비하여 표준화와 확장성의 측면에서 장점을 갖는다.

• Journal of Korea Multimedia Society
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• v.11 no.6
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• pp.883-890
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• 2008

It becomes enabled to provide variety of multimedia contents through mobile service with the development of high-speed 3rd generation mobile communication and handsets. MMS (Multimedia Messaging Service) can be displayed in the presentation format which is unified the various multimedia contents such as text, audio, image, video, etc. It is applicable as a new type of ubiquitous learning. In this study we propose to design a mobile learning system by providing profiles which meets the standard of CC/PP and by generating multimedia messages based on SMIL language through the adaptation steps according to the learning environment, the content type, and the device property of learners.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.64-66
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• 2004

XML이 웹 상에서 데이터 교환의 표준으로 부각된 이래 XML데이터의 효율적 관리 기법에 관한 연구가 활발히 수행되고 있다. XML 질의의 표준화 작업도 활발히 이루어져 현재 XQuery가 유력한 표준으로 부각되었다. 그러나 XQuery 등이 완전한 XML 질의어가 되기 위해서는 변경 연산을 제공해야 하는데 XML변경어의 표준화 작업이나 XML 변경 처리 기법에 대한 연구는 아직 미미한 실정이다. 본 논문에서는 e-Commerce 등 XML 데이터베이스 기반 웹 응용의 효율적 지원을 위한 XML 캐쉬를 점진적으로 갱신하는 과정에서 발생하는 XML 변경 연산 처리의 세 가지 기본 모델. TD (텍스트/DOM 기반). PD(PDOM 기반), 그리고 IT (인덱스된 텍스트 기반)를 제안한다. 캐쉬된 XML 문서를 어떤 포맷으로 저장하는가는 이후 XML 변경 연산의 처리 및 요청된 XML문서 반환의 효율성에 영향을 미친다. 이들 모델들은 캐쉬된 XML 문서의 저장 포맷에 따라 구분한 것이다. 이들 모델 각각에 대하여 캐쉬된 XML문서의 갱신 및 반환 기능을 제공하는 XML캐쉬 관리 시스템을 구현하여 이들 기능의 성능 및 공간 부담을 평가한 결과를 기술한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.39-41
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• 2011

웹 접근성이란 '어떠한 사용자(장애인, 노인 등)'가 어떠한 기술 환경에서도 사용자가 전문적인 능력 없이 웹 사이트에서 제공하는 모든 정보에 접근할 수 있도록 보장하는 것이다. 그러나 홈페이지 구축 비용 등의 문제로 장애인 관련 단체나 학교 등 가장 필요한 사이트 조차 접근성을 준수하고 있지 못하다. 따라서, 저비용으로 쉽게 웹 접근성 준수 학교 홈페이지를 구축할 수 있는 ASP(Application Service Provider) 서비스 모델을 제안한다. 제안된 서비스는 HTML/XHTML 표준에 맞게 올바른 마크업 언어를 사용하고, CSS를 통해 구조와 표현을 완전 분리하여 개발하여 웹 접근성의 기본이 되는 웹 표준을 준수하였으며, 표준 지원 브라우저들과 모바일 웹 환경의 종류와 특성을 이해하고 이를 바탕으로 브라우저 간 상호 운용성을 보장하기 위해 자바 스크립트를 표준 문법과 구조에 맞게 사용하고, W3C의 표준 DOM을 이용하여 홈페이지에 필요한 기능들을 설계하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1569-1572
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• 2004

이더넷 프로토콜을 분석하는 것은 다양한 프로토콜 사양을 정확하게 해석하고 프로토콜의 확장성이 고려되어야 한다. 본 논문에서는 XML의 DOM 기술을 이용하여 이더넷 프로토콜을 분석할 수 있는 파서를 제안한다. 제안된 파서는 이더넷을 이용하는 각종 프로토콜 사양을 쉽게 기술할 수 있는 틀을 제공하고, 새로운 프로토콜이 추가되면 XML 언어의 확장성을 이용하여 유지 및 보수에 드는 비용을 최소화 할 수 있는 장점이 있다. 본 논문에서는 XML을 이용한 이더넷 파서를 PDA상에서 무선 LAN 패킷을 분석할 수 있도록 Win CE 기반 개발에 사용되는 EVC++ 언어로 구현되었다.

• Journal of the Korean GEO-environmental Society
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• v.16 no.4
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• pp.13-22
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• 2015

The combined impact of Dissolved Organic Matter (DOM) fouling and inorganic ($CaSO_4,Ca_3(PO_4)_2$) scaling on the retention of TNT (2, 4, 6-Trinitrotoluene), RDX (Hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine) and HMX (1, 3, 5, 7-Tetranitro-1, 3, 5, 7-tetrazocane) explosive contaminants by nano-filtration membrane were studied, since organic fouling and salt scaling are the major limitations for membrane filtration. Results reported here indicate that DOM fouling layer with a humic acid does not necessarily lead to an immediate loss of permeate flux but can result in a severe impact on the flux loss when both humic acid and inorganic scaltants were presented simultaneously. The $Ca_3(PO_4)_2$ mixed with humic acid showd most sever flux loss (42%) compared to that of only humic acid presence (8%). It could be a result that the scaling formation of the NF membrane was dominated by cake layer formation of DOM and it was along with pore blocking by the formation of crystals inside the porous active matrix of the NF membrane. In addition, these results indicated that the membrane selectivity of the explosives retention trended correlated with respect to increasing explosives size (listed by MW) based on greater steric interactions and followed the order (MW, g $mol^{-1}$; removal, %): HMX (296.15; 83%) ${\gg}$ RDX (222.12; 49%) ≋ TNT (227.13; 32%). Because the scaling and fouling layer could lead to a additional cake-enhanced concentration polarisation effect, the retention of explosives with the presence of humic acid in the feed solution and inorganic scaling formation on top of an organic fouling layer do not differ substantially retention from that of pure DI feed and NaCl solution.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.1 no.1
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• pp.6-25
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• 2002

In this paper, we have implemented UPnP Devices which emulate a Control Point, a Light Controller, and a Digital TV. The Control Point has been developed on Linux host system by using C language. The UPnP Devices emulating the Digital TV and Light Controller are running on embedded linux developer board. For the development of UPnP Devices, UPnP SDK API Vl.04 made by Intel Co. Ltd. has been ported on Assabet Linux Reference board to implement the UPnP protocol. After we analyze and design some services of Digital TV device, we have applied UPnP Device program to those devices. UPnP SDK vl .04 consists of APIs which support HTTP, SSDP, SOAP, GENA and XML DOM Level-1 that are cores of UPnP protocol. The C program written for the UPnP Control Point has been compiled and executed on Linux-based PC. The embedded system running on Embedded Linux OS has been connected all together through Ethernet which allows IP-based communications. Under this environment, the UPnP programs are being executed on each device. Control Point, when in operational mode, discovers UPnP Devices on the network and displays the device list on the consol. By selecting one of the functionalities of the device services that are displayed on the Control Point, the controllability has been accomplished. The experiment that we performed in this thesis have revealed that the Control Point and UPnP Devices have supported the protocols including SSDP, SOAP, GENA, and DHCP.

• Journal of Korean Society of Environmental Engineers
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• v.35 no.11
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• pp.769-775
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• 2013

UV-induced transformations in the characteristics of dissolved organic matter (DOM) and the subsequent effects on the disinfection by-product formation potential (DBPFP) were investigated using the mixtures of the two humic substances with different sources, and two different size fractions of Suwannee River fulvic acid (SRFA). 7 day-photodegradation resulted in the decrease of specific ultraviolet absorbance (SUVA) of the mixtures as well as the specific DBPFP. After the irradiation, however, higher specific DBPFP values were consistently observed at the same range of the SUVA values. This suggests that non UV-absorbing components, generated by the UV-irradiation, may contribute to the formation of DBPs. Two different molecular size fractions of SRFA showed dissimilar responses to photodegradation. The behavior was also influenced by the types of the DBPs generated. Higher levels of trihalomethenes (THMs) were formed per organic carbon for the high molecular fraction compared to the low molecular fraction, whereas no differences were found in the formation of haloacetic acids (HAAs) between the two different size fractions. The formation of the two types of DBPs also differed by the irradiation times. Specific formation potential of THMs consistently increased upon the irradiation, whereas HAAs showed the initial increase followed by the decrease in their specific formation potential.

• Journal of Korean Society of Environmental Engineers
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• v.27 no.10
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• pp.1035-1042
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• 2005

Granular Activated Carbon(GAC) is widely used in drinking water treatment. At S and B Water Treatment Plant, GAC is used in place of granular media in conventional rapid filters(GAC Filter-Adsorber) for removal of Disinfection By-products(DBPs). The primary focus of this study is on the performance of existing filter-adsorber, and their operation. It was found that F/A process removed turbidity as effective as sand system. The ratio of Hydrophobic DOM (HPO) and hydrophilic DOM (HPI) fraction in the raw water at S and B WTP was similar. Filter Adsorber presented earlier DOC breakthrough and steady state condition which was contributed by biodegradation during operation period. The removal efficiency of DBPs were used to evaluate the filter performance. The DBPs concentration of F/A treated water was below treatment goal level (THM < $80\;{\mu}g/L$, HAA < $60{\mu}g/L$). The removal efficiency of THM decreased rapidly during operation period. However, HAA were removed steadily regardless of the influent concentration of HAA. These results indicate that the removal of THM depend upon the adsorption mechanism while the removal of HAA depend upon biodegradation as well as adsorption. The decrease of adsorption capacity and characteristic value of GAC may be attributed to the effect of high organic loading, residual free chlorine, coagulants, manganese oxidants and frequently backwashing. This study has confirmed that Filter adsorber process can be considered as effective alternatives for the removal of DBPs, especially HAA.