• Journal of KIISE:Computing Practices and Letters
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• v.13 no.1
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• pp.46-58
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• 2007

Current many software development projects gradually develop large volume of complex and changeable system. Architecture driven methodology is used for developing softwares like CBD (Component Based Development) or PLE (Product Line Engineering). To improve the development and maintainability in such an environment, the first of all needs the flexible and extensible architecture. This paper suggests the CBD application framework that has the flexbile and extensible architecture for improving development productivity and maintainability. In this paper, we also show basic performances of our suggested framework, comparing to a well-known web application framework, Struts.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.125-128
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• 2000

본 논문에서는, 워크플로우 모델링에 사용하는 ICN(Information Control Net)을 위한 자바 기반의 워크플로우 모델링 도구의 설계 및 구현에 관하여 기술하였다. 특히, 본 워크플로우 모델링 도구는 기존의 워크플로우 모델링 도구들과는 달리, 인터넷 기반의 실시간 그룹웨어 기술을 통해 일련의 사용자 그룹이 동시에 워크플로우를 모델링 할 수 있는 기능을 제공하고 있다. 즉, 기존의 워크플로우 모델링 기능에 실시간 그룹웨어 특성들을 통합함으로써, 한 차원 높은 수준의 모델링 환경을 제공하고, 이를 통하여 기존의 워크플로우 시스템들이 지원하지 못했던 조직 내의 구성원들간의 협동 작업을 실시간으로 지원할 수 있을 뿐 만 아니라, 요즘과 같이 대형화와 복잡화 그리고 다양화의 특징을 갖는 조직내의 워크플로우(또는 사무업무 프로세스)들에 대한 효율적인 분석 및 모델링 환경을 제공하는데 그 목적이 있다. 또한, 본 도구를 통한 모델링 결과는 WPDL(Workflow Process Definition Language)라는 국제 표준화 워크플로우 정의 언어로 저장됨으로써, 기존의 다른 워크플로우 시스템들과의 상호 호환성을 제공하고자 하였다.

• Convergence Security Journal
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• v.7 no.4
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• pp.51-60
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• 2007

It is important to assess vulnerability of network and information system to countermeasure against a variety of attack in effective and efficient way. But vulnerability and risk assessment methodology for network and information systems could not be directly applied to sensor networks because sensor networks have different properties compared to traditional network and information system. This paper proposes a vulnerability assessment framework for cluster based sensor networks. The vulnerability assessment for sensor networks is presented. Finally, the case study in cluster based sensor networks is described to show possibility of the framework.

• Journal of the Korea Computer Industry Society
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• v.6 no.3
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• pp.437-446
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• 2005

Workflow mining is a newly emerging research issue for rediscovering and reengineering workflow models from workflow logs containing information about workflow being executed on the workflow engine. This paper newly defines a workflow process reduction mechanism that formally and automatically reduces an original workflow process to a minimal set of activities, which was used proposed 'E-walk series analysis algorithm'. Main purpose of this paper is to minimize discrepancies between the workflow process modeled and the enacted workflow process as it is actually being executed. That means, we compare a complete set of activity firing sequences on buildtime with workflow execution logs which was generate on runtime. For this purpose we proposed two algorithm, the one is 'Activity-Dependent Net Algorithm' and the other is 'E-Walk Series Analysis Algorithm'.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.734-737
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• 2014

With the advent of smart age, the concern on smart work has gradually increased in the situation that creative innovation capability has become one of the important elements in business competitiveness. Most domestic small and medium-sized businesses have partly introduced smart work system due to the lack of its recognition and understanding about a specific method to implement. Under the environment, it is essential to make standardization strategy and do systematic implementation for core technology which leads global market in order to secure the dominant position in smart work related technologies. Therefore, this paper suggests standardization items which lead global standard and implementation direction on standardization through analysing the current situation introducing smart work in small and medium-sized business and technology/standardization trends.

• Journal of Internet Computing and Services
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• v.17 no.1
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• pp.47-53
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• 2016

A type of workflow affiliation network is one of the specialized social network types, which represents the associative relation between actors and activities. There are many methods on a workflow affiliation network measuring centralities such as degree centrality, closeness centrality, betweenness centrality, eigenvector centrality. In particular, we are interested in the closeness centrality measurements on a workflow affiliation network discovered from enterprise workflow models, and we know that the time complexity problem is raised according to increasing the size of the workflow affiliation network. This paper proposes an estimated ranking algorithm and analyzes the accuracy and average computation time of the proposed algorithm. As a result, we show that the accuracy improves 47.5%, 29.44% in the sizes of network and the rates of samples, respectively. Also the estimated ranking algorithm's average computation time improves more than 82.40%, comparison with the original algorithm, when the network size is 2400, sampling rate is 30%.

• Journal of Internet Computing and Services
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• v.19 no.3
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• pp.25-33
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• 2018

This paper proposes a cloud workflow model theoretically supported by the information control net modeling methodology as a cloud workflow modeling methodology that is mandatory in implementing realtime enterprise workflow management systems running with cloud computing environments. The eventual goal of the cloud workflow model proposed in this paper is to support those cloud workflow architectures reflecting the types of cloud deployment models such as private, community, public, and hybrid cloud deployment models. Moreover, the proposed model is a mathematical graph model that is extended from the information control net modeling methodology used in conventional enterprise workflow modeling, and it aims to theoretically couple this methodology with the cloud deployment models. Finally, this paper tries to verify the feasibility of the proposed model by building a possible cloud workflow architecture and its cloud workflow services on a realtime enterpeise cloud workflow management system.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.519-526
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• 2012

Human-human interaction network derived from Roman-fleuve, Togi was constructed. The network has a scale free properties as if most social networks do. The Togi is excellent model system for analyzing network dynamics because it has various characters and complex their interactions. The novel is composed of well-separated 5 sections. I constructed 5 different sub-netwotks from each section. As employing k-core algorithm as a useful tool for obtaining a core network from the complex networks, it is possible to obtain hidden and valuable information from a complex network. As gradually extending one section to another one, I constructed 4 different extended networks. The final one is whole network from the Togi. These results provide new insight that is analyzed by network-based approaches for network dynamics from literature, Togi.

• Journal of KIISE:Computing Practices and Letters
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• v.11 no.6
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• pp.514-530
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• 2005

This paper proposes a compact eAI framework for the integration of various types of applications deployed on different platforms in the Internet. The applications are connected and invoked to achieve a business goal by the coordination of the workflow system in the framework. for the construction of the framework, five sub-modules are elicited and the functions and roles of each module are defined. The elicited five sub-modules include business process modeling tool, eAI platform, business processes transform module, UDDI connection module, and workflow system. In the framework, intra and inter organizational applications can be integrated together across firewalls. In this paper, the extension of a workflow system to implement the framework is also described in detail and the usefulness of the framework is ascertained by implementing an application process within the framework. A full-fledged eAI solution can be constructed by gradually adding supplementary functions within this framework.

• TTA Journal
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• s.99
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• pp.70-75
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• 2005

지금까지의 홈네트워크 서비스는 주로 홈 오토메이션 기반의 서비스나 간단한 데이터통신 기반의 원격검침 및 보안서비스 등이 주류를 이루어 왔으나 FTTH 기술이 본격 개발되면서 홈네트워크 서비스는 기존의 서비스 이외에 통방융합 기반의 광대역 서비스로 그 영역을 확장하게 되었다. 본 고에서는 FTTH 및 홈네트워크의 주요기술을 열거하고 통방융합 기반의 광대역 홈네트워크 서비스의 종류와 KT가 제공하고 있는 광주광역시 FTTH 시험서비스의 내용에 관해 기술하였다.