• Proceedings of the Korea Society for Simulation Conference
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• 2002.05a
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• pp.253-258
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• 2002

This paper proposes a methodology for development of protocol models. The methodology attempts to employ two modeling environments in models development, NS2 and DEVSim++, which will interoperate during simulation. NS2 is a widely used network simulator in protocol research, which employs an informal modeling approach. Within the approach time and state information of protocol models are not explicitly described, thus being hard to validate model. On the other hand the DEVS formalism is a mathematical framework for modeling a discrete event system in a hierarchical, modular manner. In DEVS, model's time and state information is described explicitly, By using DEVS formalism, models can easily be validated and errors in the modeling stage can be reduced. However, the DEVS simulator, DEVSim++, supports a small amount of models library which are required to build simulation models of general communication network. Although NS2 employs an informal modeling approach and models validation is difficult, it supports abundant models library validated by experimental users. Thus, combination of DEVS models and NS2 models may be an effective solution for network modeling. Such combination requires interoperation between DEVSim++ simulator and NS2 simulator. This paper develops an environment for such interoperation. Correctness and effectiveness of the implemented interoperation environment have been validated by simulation of UDP and TCP models.

• The Journal of Information Systems
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• v.25 no.4
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• pp.121-139
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• 2016

Purpose In this study, we propose the special purposed R package named ""new_Noun()" to process nonstandard texts appeared in various social networks. As the Big data is getting interested, R - analysis tool and open source software is also getting more attention in many fields. Design/methodology/approach With more than 9,000 R packages, R provides a user-friendly functions of a variety of data mining, social network analysis and simulation functions such as statistical analysis, classification, prediction, clustering and association analysis. Especially, "KoNLP" - natural language processing package for Korean language - has reduced the time and effort of many researchers. However, as the social data increases, the informal expressions of Hangeul (Korean character) such as emoticons, informal terms and symbols make the difficulties increase in natural language processing. Findings In this study, to solve the these difficulties, special algorithms that upgrade existing open source natural language processing package have been researched. By utilizing the "KoNLP" package and analyzing the main functions in noun extracting command, we developed a new integrated noun processing package "new_Noun()" function to extract nouns which improves more than 29.1% compared with existing package.

• Journal of the Korea Society of Computer and Information
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• v.22 no.11
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• pp.105-110
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• 2017

This paper is to research the difference of care workers' role in Sanatorium between urban and rural areas. Interviews have been conducted with 100 care managers with structured questionnaires in community care settings. The findings of the study are as follows. In the analysis of working with carers a care manager acting as a counsellor in rural was required rather more than any other role in working with clients' carers. In working with formal and informal networks, an administrative specialist role was also important in both areas. With resource management, there were some regional variances between rural and urban. In the urban area, a care managers as a coordinator was more required than as a broker. In the rural area, a care manager as a broker, selecting service resources for elderly clients was the most suitable role. In conclusion, in general rural care managers' roles were similar to those of many core managers in urban area. Among the many possible roles of care managers that effective continuity of care is to be provided for elderly clients in community care, two have been specified as essential roles. The first is the role of care managers that provides coordination and integration of services at the clients' levels as a care manager as an implementer, a linkman, counsellor. The second is at the system level which is possible role for coordination and linkage of programs as a characteristics of care managers, task with formal & informal network, community resources, available residential & NHS resourcesw.

• The Journal of Society for e-Business Studies
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• v.18 no.1
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• pp.147-164
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• 2013

For the continuous information security governance, we have to focus on not just technical aspects like access control and DRM, but informal level management like information security(IS) behavior, culture, and personal value. But there are few informal level studies, while many formal level studies of IS governance or technical means. This study is an empirical test that how IS culture, normal beliefs, personal behavior and value affect employee's deviant behavior. And we define a lack of an awareness of value and importance on IS regulations in organizations as "Information Security Anomie" with the concept of anomie, a viewpoint on social organization.

• Korean journal of communication and information
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• v.22
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• pp.167-210
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• 2003

This study examined the organizational status of female employees in three major over-the-air broadcasting companies in South Korea in terms of both formal and informal organizational structures. Quantitative and qualitative analyses were conducted for the data collected through the official statistical documents on Korean broadcasting industries, in-person/telephone interviews, and survey. The results show that the proportion of female employees in the three major over-the-air broadcasting companies remained relatively unchanged at about as low as 10 per cents during the past 10 years, Furthermore, most of them are positioned in the lower hierarchical positions. The informal organizational status of female employees in terms of informal organizational culture, informal network, and mentoring, also reveals inequal conditions in many respects. Concerning role assignments, no significant evidence of sexual discrimination was found. Discrimination against women in assigning core roles such as political and economic news reporting and drama producing, however, was still prevailing. Currently, a marked increase of female proportion is observed among newly hired reporters, producers, and announcers. In the long term, these trends can bring positive changes in the status of female employees in the broadcasting industry organization.

• Proceedings of the Korean Information Science Society Conference
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• 2002.04a
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• pp.202-204
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• 2002

모바일의 광범위함 보급, PDA와 같은 소형기기의 일반화로 서비스 사용자의 위치정보가 유동 적이다. 변화하는 서비스 사용자 위치와 관련된 정보서비스를 제공하는 시스템, 즉 위치기반정보검색 시스템 엘비스(LBIS)이다. 엘비스에서는 서비스 사용자들이 GPS 장비를 통해 위치를 알아낸다. 알아낸 위치를 가지고 위치기반 서비스정보를 등록하거나 자신의 위치를 중심으로한 정보 검색을 수행 할 수 있다.

• Journal of Korean Library and Information Science Society
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• v.25
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• pp.207-223
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• 1996

Nowadays, the wide spectrum of changes have been occurred in library world. It is essential for librarians to improve their professionalization standards to convert these changes into the o n.0, pportunity of growth. The device of improvement of professionalization standards is following: 1. Librarians have to receive formal and informal education and learn to advance in knowledge and skill concerning library affairs continually. 2. Self learning has to be transform into learning organization. 3. Education of Librarianship concentrate mainly in practical and technical study by this time but it is indispensable to develop the theory and philosophy of librarianship.

• The Journal of Information Technology and Database
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• v.8 no.1
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• pp.117-128
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• 2001

Recently there are many researches of text mining to find interesting patterns or association rules from mass textual documents. However, the words extracted from informal documents are tend to be irregular and there are too many general words, so if we use pre-exist method, we would have difficulty in retrieving knowledge information effectively. In this paper, we propose a new feature extraction method to classify mass documents using association rule based on unsupervised learning technique. In experiment, we show the efficiency of suggested method by extracting features and classifying of documents.

• Proceedings of the Korean Society for Language and Information Conference
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• 2002.06a
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• pp.98-118
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• 2002

Comparing the uses of '-canh-' with the ones of '-ci,'this study suggests that different modal interpretat ions by '-canh-' and '-ci' is based on the interpersonal relationship between speaker and interlocutor. While noting that '-canh-' and '-ci' are the modal indicators denoting degrees of speaker commitment, for making clear the illocutionary force of utterances, it is observed and explained that what the speaker is committed respectively by using '-canh-' and '-ci' is highly sensitive to the relativity of the known/unknown status of the informal ion introduced into discourse contexts .

• Proceedings of the Korean Information Science Society Conference
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• 2001.10b
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• pp.61-63
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• 2001

본 논문의 목적은 기계 학습 방법을 이용하여 정보 추출 규칙의 패턴을 학습할 수 있는 인터페이스 에이전트의 개발에 있다. 인터페이스 에이전트는 사용자와 상호작용이 가능한 지능형 에이전트이다. 사용자는 인터페이스 에이전트와 상호작용을 하게 되며 에이전트는 이 상호 작용에서 사용자가 원하는 정보 추출 규칙을 학습하게 된다. 사용자는 웹 문서에서 원하는 정보의 위치를 지정하여 데이터를 인터페이스 에이전트에게 학습시킨다. 인터페이스 에이전트는 학습된 추출 규칙으로부터 사용자가 원하는 정보를 추출한다.