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- 저자 : 정진국(JinGuk Jung) (검색결과 6 건)
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정진국(JinGuk Jung),이순근(SoonGeun Lee),조근식(GeunSik Jo) 한국지능정보시스템학회 2003 지능정보연구 Vol.9 No.3
In context of e-commerce, negotiation is a procedure to help negotiate between buyer and seller by adjusting their negotiation issues such as price and in terms of payment. We used intelligent agent and mobile device to promote new framework of e-commerce. Moreover, this framework can help buyers and sellers to carry their commercial transactions effectively. In regard to that issue, we need to carry out the research of negotiation agent that can be used in e-commerce fields.<br/> In this paper, we modeled the negotiation using CSP for the performance of agent in m-commerce environment. Furthermore we implemented interface for mobile device to extract buyer's requirement and preference easily. Besides that we used utility function to make a decision for various evaluation functions and suggestions that are used for evaluation of negotiation issues. A difficulty of generating offer is dependent on the number of negotiation issues and the range of the values. Therefore, if any offer has a number of negotiation issues and the range of values are wide, the search space will be exponentially expanded. There have been many studies for solving this problem, we applied those techniques to improve the agent's ability of negotiation. For example, a contract can be accomplished by exchanging seller and buyer's offer that is generated by agent to adjust the requisite profit for each party. Finally, we show the improvement of satisfaction as the negotiation is processed.
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효율적인 멀티미디어 검색을 위한 MPEG-7 시각 정보 기술자의 인덱싱 및 결합 알고리즘
송치일(Chiil Song),김재영(Jaeyoung Kim),정진국(Jinguk Jung),낭종호(Jongho Nang) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.1B
최근 멀티미디어 정보를 기술하기 위한 표준인 MPEG-7이 제안되어 이미지/동영상 검색 시스템과 같은 응용분야에서 사용되기 시작하였다. 그러나 MPEG-7 시각 정보 기술자들은 대부분 고차원으로 표현되고 기술자들이 가지는 각 속성들의 성질이 서로 동일하지 않기 때문에 기존의 인덱싱 방법으로는 효율적인 검색을 할 수 없다. 본 논문에서는 MPEG-7 시각 정보 기술자중에서 많이 사용되는 Dominant Color 기술자와 Contour Shape 기술자에 대한 새로운 인덱싱 알고리즘을 제안한다. Dominant Color 기술자에서 사용되는 비교 연산 식은 가우스 혼합 모델에 기초하고 있기 때문에, 기술자의 각 속성들을 하나의 칼라 히스토그램 형태로 변형시켜서 인덱스로 사용한다. Contour Shape 기술자는 2 단계 형태의 알고리즘을 사용한다. 각 단계는 글로벌 파라미터 속성과 비트맵 인덱스를 사용한 인덱싱이 적용된다. 제안된 인덱싱 방법을 사용했을 때 Dominant Color의 경우 90%의 정확도에 120배 이상의 속도 향상을 나타냈고, Contour Shape의 경우 82%의 정확도에 3배 이상의 속도 향상을 나타냈다.
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발전 패러다임의 정립 : 도구 개발과 적용 Measurement Scale and Application
정일환,정진국 대구효성카돌릭대학교사회과학연구소 1995 사회과학연구 Vol.4 No.-
The issue of development has been widely discussed during the last four decades in social science. For over four decades the subject has been debated and examined from different perspectives. Theoretical perspectives on development have changed in response to the changing historical reality of the developmental process and of relations betweeen developing and developed countries. In recent years, Third world countries and even the developed countries have experienced the dysfunctions or problems of development. What appeared to be panaceas were accepted and tried. When their promise did not materialize there was a shift in paradigms, and there were experiments with new strategies. It is now being generally recognized that conventional development strategy may not be the best solution to the problem of developement in the delveloping countries. Thus, alternative development strategy has evolved in both Third world and developed countries, though the symptoms and solutions are different in both. The alternative development models are different from the conventional development models in terms of goals and means of development. At this point, it seems useful to identify and organize the development paradigms which many development theoriests are discussing and debating in various professional activities. Therefore, this study attempts to develop measure scale of development paradigms and apply to each country. The instrument used for this study was developed based upon literature review. The instrument was developed to identify conventional and alterantive development ideas. Validity and reliability of the instrument were tested by factor analysis. A pilot test was implemented to improve th effectiveness of the questionnaire. The reliability of the instrument was measured by coefficient θ(thetha =.83). The result of this study might imply useful theoritical criteria in discussing what the concept 'development' means to different people. Classical and left-criticism development theories were considered different camps, however, from the perspective of alternative development camp. they have the same goals of development. The study has shown that there is no single accepted definitions for development. Comprehensive definition of development should include all of components such as history, economic productivity, political system, cultural values and natural resources. Thus, a given country's concept of development is a funciton of the weighting or priority assigned to each of these components. The instrument developed in this study, which showed acceptable levels of validity and reliability, might be used on a larger sample and revised for future use according to each society's political, social and economic situations. In addition, it is necessary to develop more items for the development scales which can cover more issues and problems of development.
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한일조,정진국 대구효성가톨릭대학교 교육연구소 1995 교육연구논집 Vol.4 No.-
The purpose of this study was to investigate current conditions of Korean secondary education and to suggest some suggestions for its reform. For this purpose, specific questions concerning current conditions of education, determining factors for educational qualities, and possible areas of improvement in the secondary level of education were pursued. The result is as following: Korean secondary education has achieved a great deal in its scale and numbers for the last half century. However, it is still far behind in its qualitative aspect, if the ‘quality’ in education is defined as relative proximity to the educational goal of moral or total growth as human being. Thus, several things are suggested for its improvement. (1) Curriculum should be regularly maintained, without disruptive operation due to excessive emphasis put on examinations. (2) Not only efficiency, but validity also should be respected in educational process and evaluation. (3) There should be more variety and openness in educational ladder system. (4) Educational policies must be stable, and should allow some degree of autonomy for individual schools and universities. (5) People’s unwarranted beliefs in credentialism should be abandoned or redirected.
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