• 대한안전경영과학회지
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• 제6권2호
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• pp.127-139
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• 2004

Web-based services have fundamentally confidential problems due to characteristics of internet environment such as anonymity. These problems are serious obstacles to grow the web-based services. The security and confidence of web-based services rely on both service provider and users' opinion. But the former has difficulty in trusting the service provider and the latter takes too long time to propagete all users after converging their opinion. Therefore it is necessary to establish the objective and confidential evaluation and certification program for web-based service. In this paper, the internal and external web-based services evaluation and certification programs are compared and analyzed. The critical factors and evaluation methodology for secure and confidential web-based service are identified. Finally, this paper provides the improvement and strategy for web-based services evaluation and certification program.

• Asia pacific journal of information systems
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• 제13권2호
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• pp.145-170
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• 2003

Open Decision Support System(DSS) is an automated and transparent system that is built to be shared both within and across organizations. The open DSS has been thought to be a set of decision components that are communicating through Web protocols. These characteristics intuitively invite the Web services concepts, which are currently one of the new trends in network-based business services. However, web services still are not active enough to be autonomous, and to provide for composing functionalities. These lead to the motivation on building a sophisticated web service to contain these features and to utilize web services on behalf of the user. This paper aims to propose a new concept of Meta Web Service, a web service-based open DSS. Decision modules in a dynamic and open DSS can be viewed as a web service. The Meta Web Service understands the users problem statement with ontology, performs web service discovery, web service composition, and automatically generates codes for composite web service execution. A prototype of example web service has been developed to show the feasibility of the proposed idea.

• 정보처리학회논문지B
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• 제11B권4호
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• pp.457-464
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• 2004

DAML-S/OWL-S, WSMF 및 BPEL4WS와 같은 웹 서비스 기술방식은 웹 서비스의 기능적(functionality) 측면만을 표현하고 있기 때문에, 웹 서비스(Web Service)의 개념적, 의미적 기능을 표현하기에는 한계가 있다. 본 연구에서는 웹 서비스의 기능적 측면과 의미적 측면을 통합적으로 표현하기 위해서 수행 온톨로지(Competence Ontology)를 구축하여 웹 서비스를 기술하기 위한 새로운 방법을 제시한다. 또한 시스템 내부적으로는 Data Mediator(D-Mediator)와 Control Mediator(C-Mediator)를 이용하여 서로 이질적인 서비스간의 상호연동 및 합성을 가능하게 한다.

• 한국IT서비스학회지
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• 제7권1호
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• pp.237-254
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• 2008

Government itself produces a vast amount of highly valuable information, and the internet increases its potential social and economic value. So far, government provide web services that is web 1.0 style. To meet the user's needs, that is online collaboration and sharing, government web services also change to web 2.0. This paper argues that government could now grasp the opportunities that are emerging in terms of web 2.0. Current policy and action is not yet adequate to grasp these opportunities. So, this study focused on the strategic development of electronic government services based on web 2.0. For the purpose, we reviewed the web 2.0 cases and former electronic government services. And then, we defined government 2.0 that is electronic government services based on web 2.0, and provided reference model of government 2.0. Government 2.0 reference model will help the administrators to find better ways to use the technological infrastructure and save efforts for trial and errors from the lack of systematic approach.

• 정보처리학회논문지D
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• 제12D권6호
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• pp.889-898
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• 2005

최근에 동적으로, 즉 요구가 있는 즉시 서비스들을 조합하는 동적 웹 서비스 조합은 가장 큰 관심사 중 하나이다. 지금까지 동적 웹 서비스조합에 관한 많은 연구들이 수행되어졌는데 주로 사람이 개입된 반자동 대화식 조합 기법들이 제안되었다. 또한 이들 연구에서 탐색 알고리즘 및 워크플로우 설계 기법들이 부분적으로는 기술되어 있으나. 웹 서비스 조합 자동화를 위한 전반적인 워크플로우 처리과정을 기술한 연구는 아직 없다. 본 논문은 웹 서비스 조합 자동화 기법에 초점을 맞추고 있다. 주된 아이디어는 시멘틱 웹을 실현하기 위한 웹 온톨로지와 비즈니스분야에서 성공적으로 활용되고 있는 워크플로우 기법들을 적용하여 웹 서비스 조합 자동화 시스템을 구현하는 것이다. 본 연구에서는 웹 서비스발견을 위해 매칭 알고리즘이 제안되고, 웹 서비스들 간 상호연결을 지원하기 위해 매칭 알고리즘에 온톨로지 개념이 적용된다. 그리고 웹 서비스 조합 자동화를 지원하기 위한 워크플로우 실행계획이 기술된다. 마지막으로 실 데이터 실험을 통해 제안 시스템의 우수성을 보인다.

• Asia pacific journal of information systems
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• 제14권4호
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• pp.147-162
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• 2004

A major difference between on-line services and off-line services is in the quality of the service they provide. On-line services lack of dynamic interface between customers and service providers. Traditional studies on personalizing web services do not consider the intimacy level of customers to web services. This study suggests a web personalizing method to satisfy customers in on-line using intimacy theory, cluster analysis, and data mining. The goal of this study is to support customers in web with more intimate service. It also offers improved services to customers by personalizing web services dynamically.

• 한국CDE학회논문집
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• 제12권4호
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• pp.233-244
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• 2007

Web Services are a distributed component technology based on XML and Web. The Web Services are used to integrate heterogeneous systems under the distributed environment. In this study, the concept of Web Services for CAD (WSC) is introduced, which aims at interoperation with CAD systems using the Web Services. This paper introduces one part of the WSC which enables remote users or applications to retrieve the geometries and the design history of CAD models using the Web Services. This paper proposes an architecture of the WSC, the data model and the interfaces for retrieving CAD model information, and the way to apply the WSC to commercial CAD systems.

• 디지털산업정보학회논문지
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• 제8권4호
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• pp.83-90
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• 2012

With the rapid growth of internet infrastructure, World Wide Web is evolving recently into various services such as cloud computing, social network services. It simply go beyond the sharing of information. It started to provide new services such as E-business, remote control or management, providing virtual services, and recently it is evolving into new services such as cloud computing and social network services. These kinds of communications through World Wide Web have been interested in and have developed user-centric customized services rather than providing provider-centric informations. In these environments, it is very important to check and analyze the user requests to a website. Especially, estimating user preferences is most important. For these reasons, analyzing web logs is being done, however, it has limitations that the most of data to analyze are based on page unit statistics. Therefore, it is not enough to evaluate user preferences only by statistics of specific page. Because recent main contents of web page design are being made of media files such as image files, and of dynamic pages utilizing the techniques of CSS, Div, iFrame etc. In this paper, large log analyzer was designed and executed to analyze web server log to estimate web contents preferences of users. With mapreduce which is based on Hadoop, large logs were analyzed and web contents preferences of media files such as image files, sounds and videos were estimated.

• 한국정보과학회논문지:정보통신
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• 제30권1호
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• pp.97-116
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• 2003

최근 웹 서비스의 증가와 한께 엘 서비스에 대한 공격과 피 피해 규모는 증가하고 있다. 그러나 웹 서비스에 대한 공격은 다른 인터넷 공격들과 성격이 다르고 그에 대한 연구 또한 부족한 현실이다. 더욱이 기존의 침입 탐지 시스템들도 낄 서비스를 보호하는데 적합하지 않다. 이 연구에서는 먼저 웹 공격들을 공격 발생 원인과 공격 탐지 관점에서 분류하고, 마지막으로 위험성 분석을 통하여 웹 공격들을 분류하였다. 이를 통해 엘 서비스를 보호하기 적합한 웹 서비스 특화된 침입 탐지 시스템을 설계, 개발하는데 도움을 주고자 한다.

• 경영과정보연구
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• 제9권
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• pp.65-80
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• 2002

As the growth of Internet business, many web sites have been developed their own Internet business strategies. Yet, many web sites have difficulties to make profit. In this paper, an economic model is developed to analyze web sites' quality and pricing strategies when they initiate their services as free services and develop advertising services and other charged services. By analyzing the economic model, optimal quality and prices was found. And by analyzing the optimal strategy, I found that web sites should properly decide their market share on initial customer. Finally, the importance of web sites' productivity to make profit is emphasized.