• Title/Summary/Keyword: e-System

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A Study of Verifying e-Portfolio System Success Model in a College Education (대학 e포트폴리오 성공모형의 검증에 관한 연구)

  • Lee, Yun Jae;Kim, Jin-Kyung;Park, Dongjin
    • The Journal of Information Systems
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    • v.28 no.3
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    • pp.203-225
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    • 2019
  • Purpose The purpose of this study is to empirically verify an ePortfolio success model which shows the structural causal relationships among the basic modeling constructs. We developed the success model based on DeLone and Mclean(2003) from IS perspective and on Balaban et al(2013) from ePortfolio perspective. And we are focused on the success of ePortfolio system designed for college students and professors. Design/methodology/approach Structural equation modeling techniques were applied to data collected 375 users of the ePortfolio system, K-Folio, at least one semester during one academic year. The structural model was analyzed using a Lisrel 8.54 statistical program. Findings The followings are the findings of the study. First, the constructs of IS success model are well applied to ePortfolio for college education. Second, the proposed model which has direct causal relationships from ePortfolio's quality to performance is more significant than the D&M and Balaban's model(2013). Third, the information quality among ePortfolio quality constructs does not have effect on system usability and performance. It means that information contents' quality issued by professor or system manager is not satisfied with the students yet. Finally, by using indirect analysis of structural equation model, we found that the ePortfolio operation manager should focus on ensuring system maintenance activities and providing fast and accurate services for improving ePortfolio performance.

Design of Distributed Object n-tier Model for e-Business System (E-비즈니스 시스템을 위한 분산 컴포넌트 n-tier 모델의 설계 및 구현)

  • 김효정;정태충;이승관;정경숙
    • Proceedings of the IEEK Conference
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    • 2000.11c
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    • pp.157-160
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    • 2000
  • Nowadays, internet or web is popularized in society. So, intranet or inside computation environment of business has been changed a web based open system. Client and Server system that has been used core technique for enterprise information system several years is developing e-business system that perform a business in web based. Because, internet is extension of a whole field like business or information technology Therefore we understand a meaning of e-business and ERP system that a form of e-business system. Then we realize problem of existing system and study a technology for complement of system. Finally, we propose a proper model for e-business system and develop an example.

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Improved Spam Filter via Handling of Text Embedded Image E-mail

  • Youn, Seongwook;Cho, Hyun-Chong
    • Journal of Electrical Engineering and Technology
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    • v.10 no.1
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    • pp.401-407
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    • 2015
  • The increase of image spam, a kind of spam in which the text message is embedded into attached image to defeat spam filtering technique, is a major problem of the current e-mail system. For nearly a decade, content based filtering using text classification or machine learning has been a major trend of anti-spam filtering system. Recently, spammers try to defeat anti-spam filter by many techniques. Text embedding into attached image is one of them. We proposed an ontology spam filters. However, the proposed system handles only text e-mail and the percentage of attached images is increasing sharply. The contribution of the paper is that we add image e-mail handling capability into the anti-spam filtering system keeping the advantages of the previous text based spam e-mail filtering system. Also, the proposed system gives a low false negative value, which means that user's valuable e-mail is rarely regarded as a spam e-mail.

Developing of XML Messaging System for efficiently e-Procurement (효율적인 e-Procurement를 위한 XML 메시징 시스템 개발)

  • 임종선;주경수
    • The Journal of Society for e-Business Studies
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    • v.7 no.2
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    • pp.83-95
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    • 2002
  • Because XML is a W3C standard and has characteristics like platform-independent, it has a critical role in e-commerce. Business rules and procedures should be standardized for efficient B2B integration. But a lot of companies has its own XML documents instead of standard documents. Therefore many organizations try to make standards for e-commerce based on framework. In this paper, n messaging system is designed and implemented. Client request service in a XML and server return response in XML in this system. So we can more easily and efficiently build e-Procurement system based on this XML messaging system.

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A SCORM-based e-Learning Process Control Model and Its Modeling System

  • Kim, Hyun-Ah;Lee, Eun-Jung;Chun, Jun-Chul;Kim, Kwang-Hoon Pio
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.5 no.11
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    • pp.2121-2142
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    • 2011
  • In this paper, we propose an e-Learning process control model that aims to graphically describe and automatically generate the manifest of sequencing prerequisites in packaging SCORM's content aggregation models. In specifying the e-Learning activity sequencing, SCORM provides the concept of sequencing prerequisites to be manifested on each e-Learning activity of the corresponding tree-structured content organization model. However, the course developer is required to completely understand the SCORM's complicated sequencing prerequisites and other extensions. So, it is necessary to achieve an efficient way of packaging for the e-Learning content organization models. The e-Learning process control model proposed in this paper ought to be an impeccable solution for this problem. Consequently, this paper aims to realize a new concept of process-driven e-Learning content aggregating approach supporting the e-Learning process control model and to implement its e-Learning process modeling system graphically describing and automatically generating the SCORM's sequencing prerequisites. Eventually, the proposed model becomes a theoretical basis for implementing a SCORM-based e-Learning process management system satisfying the SCORM's sequencing prerequisite specifications. We strongly believe that the e-Learning process control model and its modeling system achieve convenient packaging in SCORM's content organization models and in implementing an e-Learning management system as well.

The Specified Reference Model for Supporting a Teaching&Learning Function of the e-Learning System (e-러닝 시스템의 교수-학습 기능 지원을 위한 명세화된 참조 모델)

  • Lee, Woo-Beom
    • Journal of the Institute of Convergence Signal Processing
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    • v.10 no.1
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    • pp.23-31
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    • 2009
  • Supporting of the user-wanted teaching&learning functions is an important factor to improve the learning effects in a e-learning system. However, most methods are not enough to refer a model for supporting a teaching&learning function in a planning, development, operation, and evaluation. Accordingly, we propose the specified reference model for supporting a teaching&learning function in the web-based e-learning system. To verify the validity of the proposed system, we consulted the students experienced in e-learning system. As a results, The proposed specified reference model can be expected more $11%{\sim}23%$ effectiveness improvement than that of their experienced in the previous system. Also, as the pre-evaluated results using the teaching&learning services supporting degree by the proposed reference model, those measurements are very similar to the services requirement degree of their experienced in e-learning system.

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Study on architecture of u-number system and network (BcN에서 유비쿼터스주소 체계 및 네트워크구조 연구)

  • Chung, Hee-Chang;Lee, Yeong-Ro
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.42 no.12
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    • pp.71-76
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    • 2005
  • The 070-VOIP service were began to support system of E.164 and an IP address service. The address system was proposed how an convergence of E.164 address system was worked with an EPC and an IP address to the multimedia convergence service within the integration of wireless and wireline. In future, it was presented the way that the end user could use an integrated address system to be based on E.164 in BcN networks. An expansibility will be easy to all things are put into in knowledge that u- address system use an integrated address system to the basis of E.164 system.

A Methodology for Estimating Optimum Hardware Capacity E-learning System Development (E-러닝시스템 구축 프로젝트의 적정 하드웨어 산정방법론 연구)

  • Jung, Ji-Young;Baek, Dong-Hyun
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.3
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    • pp.49-56
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    • 2011
  • Estimating optimum hardware capacity of an e-learning system is very important process to grasp reasonable size of designing technique architecture and budget during step of ISP(information strategic planning) and development. It hugely influences cost and quality of the whole project. While investment on information system hardware has been continuously increased, there was no certified hardware capacity estimating method in e-learning system development. A guideline for hardware sizing of information systems was established by Telecommunication Technology Association in 2008. However, the guideline is not appropriate for estimating optimum hardware capacity of an e-learning system because it was designed to provide general standards for estimating hardware capacity of various types of projects. The purpose of this paper is to provide a methodology for estimating optimum hardware capacity in e-learning system development. To develop the methodology, this study, first of all, analyzes two e-learning development projects, in which the guideline was applied to estimate optimum hardware capacity. Then, this study finds out several key factors influencing on hardware capacity. Finally, this study suggests a methodology for estimating optimum hardware capacity of an e-learning system, in which weights for the factors are determined through AHP analysis.

Implementation of the Integrated E-Catalog System for the efficiency of the B2B e -business (B2B e-business를 위한 차세대 통합 전자 카탈로그 시스템 개발)

  • 최옥경;한상용
    • The Journal of Society for e-Business Studies
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    • v.7 no.3
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    • pp.61-73
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    • 2002
  • Product catalog information is the most important factor to make customers purchase the product for various B2B or B2C businesses provided on the Internet. As catalog information differs from company by company, it cannot provide common criteria standard to customers to make decisions. Therefore, it is necessary to develop a platform independent system, which integrates incompatible data from each company' catalogs and manages its database. This paper describes the integrated E-catalog system made up DB module, catalog management module, and interface module. This system allows customers to view standardized product catalog information from different companies with real -time updates, and also provides extensibility, flexibility, and interoperability for the effective E-Business management.

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Standard Conformance Test System for e-Business Solutions Supporting ebXML (ebXML 지원 솔루션의 표준적합성 테스트 시스템 구축)

  • Kim, Dong-Soo;Yun, Jung-Hee
    • Journal of Information Technology Services
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    • v.2 no.1
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    • pp.85-97
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    • 2003
  • This research has designed and implemented the standard conformance test system for e-Business solutions that supports the ebXML, which is currently being focused on as the leading electronic commerce framework. The adoption of standards such as ebXML is probably the best way to achieve interoperability among electronic commerce systems, and more and more e-Business solutions around the world are supporting ebXML. This research primarily discusses the concept and needs for the standard conformance tests on e-Business solutions. The standard conformance test system is developed based on the detailed specifications of the ebXML framework. This system was used to test commercial e-Business solutions supporting ebXML. The system implemented in this research will provide a significant basis for the standard conformance certification of e-Business solutions, and could also provide clear decision criteria for e-Business solutions currently in market, thus activate the overall e-Business market.