• Journal of KIISE:Software and Applications
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• v.28 no.10
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• pp.732-742
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• 2001

The concept of an agent has become important in computer science and has been applied to the number of application domains such electronic commerce and information retrieval. But, no one has proposed yet in software test. The test agent system applied the concept of an agent to software test is new test tool. It consists of the User Interface Agent. the Test Case Selection & Testing Agent and the Regression Test Agent. Each of these agents, with their intelligent rules, carry out the tests autonomously by empolying the object-oriented test processes. This system has 2 advantages. Firstly since the tests are carried our autonomously, it minimizes tester interference and secondly, since redundant-free and consistent effective test cases are intellectually selected, the testing time is reduced while the fault detection effectiveness improves. In this paper, by actually showing the testing process being carried out autonomously by the 3 agents that form the TAS, we show that the TAS minimizes tester interference. By also carrying out the 4 different types of experiments on the RE-Rule, CTS-Rule, overall TAS experiment, and the fault-detection effectiveness experiment on the RE-Rule, we show the cut-down on the testing time and improvement in the fault detection effectivity.

• Journal of KIISE:Information Networking
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• v.32 no.6
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• pp.705-715
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• 2005

A peer-to-peer web caching has been studied recently as it can reduce the traffic converged on the server side and can support the traditional web caching model. Although the peer-to-peer web caching has the merit of having additional cache space from the local caches of peers without additional infrastructure, several constraints such as dynamic participation and local caching strategy caused by the autonomy of peers in peer-to-peer networks nay limit the performance of the peer-to-peer web caching. To overcome these limitations, we propose an efficient directory-based peer-to-peer web caching system under dynamic participation of peers. In the proposed caching system, we present new peer selection and replica management schemes by introducing the concept of the object lifetime in P2P networks. We evaluate the effectiveness of the proposed system through trace-driven simulations with a web log dataset. Simulation results show that the proposed system has higher accuracy and fewer redirection failures than the conventional directory-based P2P web caching system in feasible peer-to-peer networks.

• KDI Journal of Economic Policy
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• v.10 no.2
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• pp.27-48
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• 1988

본고(本稿)에서는 이자율(利子率)의 실물경제(實物經濟)에 대한 파급구조(波及構造)의 중요한 부분으로 투자(投資)를 선택, 이자율(利子率)과 투자(投資)와의 관계를 실증적(實證的)으로 분석하였는데, 이는 첫째로 자율적(自律的)인 금융환경하(金融環境下)에서는 통화(通貨) 이자율정책(利子率政策)이 어떠한 운용수단(運用手段)을 사용하더라도 정책효과(政策效果)를 이자율(利子率)의 변동(變動)을 통하여 얻는다는 사실과, 둘째로 우리나라에서는 소비자금융(消費者金融)이 미미하므로 투자(投資)가 이자율(利子率)의 실물경제(實物經濟)에 대한 중요한 파급구조(波及構造)일 수밖에 없다는 선험적(先驗的) 판단(判斷)등에 근거한다. 본고(本稿)에 의하면, 첫째 이자율(利子率)의 변동(變動)은 최소한 2년간에 걸쳐 투자(投資)에 부(負)의 영향(影響)을 미치고, 둘째 제(第)1금융권(金融圈)과 제(第)2 사금융권(私金融圈)의 대표이자율(代表利子率)들(1년만기 정기예금금리(定期預金金利) 및 회사채(會社債) 유통수익율(流通收益率)로 본(本) 연구(硏究)에서 각각 정의(定義)) 간의 이자율차(利子率差)는 투자(投資)에 뚜렷하게 부(負)의 영향(影響)을 미치고, 세째 제(第)1금융권(金融圈) 이자율(利子率)의 투자(投資)에 대한 영향(影響)은 파급과정(波及過程)에서 많이 상쇄되는 것으로 나타났다. 따라서 첫째로 이자율정책(利子率政策)은 장기적(長期的) 안목(眼目)을 가지고 수립되어야 하며, 둘째 기업경영환경(企業經營環境) 개선(改善)시키고 이자율정책(利子率政策)의 유효성(有效性)을 제고(提高)시키기 위하여 이자율자유화(利子率自由化)는 이자율차(利子率差)를 축소시키는 방향으로 추진되어야 하며, 세째 이자율차(利子率差)의 축소는 이자율(利子率)의 부분적(部分的)인 조정보다는 금융부문(金融部門) 전반(全般)의 광범위한 자율자유화(利子率自由化) 및 구조개선(構造改善)을 필요로 한다.

• Korean Journal of Social Welfare Studies
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• v.49 no.1
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• pp.335-374
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• 2018

It is anticipated that the introduction of ICT to street-level welfare administration will smoothen communication processes between frontline officials and recipients by intensifying welfare information sharing and distribution. However, through a case study of ICT-mediated street-level welfare administration in South Korea, this article claims that ICT can deteriorate frontline official-recipient relationship into more distrustful and disempowered directions. This study demonstrates that ICT tends to replace face-to-face rapport building between officials and recipients with mechanical checking and complaining processes. ICT-based welfare administration can also disempower the autonomous interactions of street-level actors by surveiling every working step of frontline officials and the daily lives of recipients. Through an investigation into street-level bureaucracy in an information society, this study criticizes the dehumanization tendency of ICT-mediated human services and raises a question in the roseate vision on social welfare informatization.

• The Journal of the Korea Contents Association
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• v.19 no.7
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• pp.13-21
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• 2019

Because security of Internet of Things(IoT) products and others is poor, there are many hacking incidents To prevent security threats, it is important for companies to first make products with high security levels and choose products that are safe for users. In response, the Korea Internet & Security Agency is testing the security of IoT products and linked mobile apps to impose ratings. Security certification service is a service that tests IoT products and linked mobile apps to ensure certain levels of security and issues certificates when they meet the criteria. It can induce autonomous security enhancement of IoT products, contribute to strengthening security capabilities of IoT companies in Korea and vitalizing their overseas advancement, and have the expected effect of resolving public anxiety over IoT products. In this study, the criteria for IoT security certification are presented, but the importance priority is sought to be derived for assessment items that need to be strengthened. This will help to provide guidelines that can contribute to strengthening the security capabilities of domestic Internet companies and boosting their overseas advancement.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.43-53
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• 2019

This study has explored the trajectory of the development and diffusion of the CTLs in the Korean universities by using isomorphism theory of neo-institutionalism. Neo-institutional theorists believe that organizational structure and behavior reflects the norms and values recognized in the society rather than the organization's autonomous and rational choices. Based on the isomorphism framework, the introduction and diffusion of the CTLs in the Korean universities have been led by the government. In addition, the CTLS(Korean Association of Center for Teaching & Learning) has served as a direct basis for the normative pressures. In other words, the CTLs have been securing devices for the universities to acquire external justification by the environment, and they have been able to confirm that the system was isomorphed, in particular by meeting and agreeing with the government-set university evaluation criteria. Efforts should be made to develop unique values and strategies that enable CTLs to become engines of the development of university education in response to rapid changes in the academic environment.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.1
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• pp.35-44
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• 2021

Recent advances in the 4th Industrial Revolution have accelerated the change of the working environment, such that the paradigm of education has been shifted in accordance with career education including the free semester system and the high school credit system. While the purpose of those systems is students' self-motivated career exploration, educational limitations for teachers and students exist due to the rapid change of the information on education. Also, education technology research to tackle these limitations is relatively insufficient. To this end, this study first defines three requirements that education technologies for the career education system should consider. Then, through data-driven artificial intelligence technology, this study proposes a data system and an artificial intelligence recommendation model that incorporates the topics for career exploration, courses, and majors in one scheme. Finally, this study demonstrates that the set-based artificial intelligence model shows satisfactory performances on recommending career education contents such as courses and majors, and further confirms that the actual application of this system in the educational field is acceptable.

• Journal of the Korea Society for Simulation
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• v.19 no.4
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• pp.169-178
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• 2010

Agent based simulation is an approach for the analysis of a system's long term behavior where the entities in the system behave independently by their own judgement and memory, but influence each other to cope with given environment. In this paper we developed an agent based simulation model for the analysis of behavioral mechanism of team formation. In the process of team formation members' mutual preference is an important factor although each member can join up with one's own will. Also a team performance can vary by the member's own experience. We implemented the developed model using Netlogo 4.1, and verified the model by simulation. From the simulation results we found that the model successfully performed necessary functions using behavioral rules, judgments, and evolutionary processes by memory. As a further study we will be able to apply the model for analyzing various ecological behavior of team formation.

• Korean Journal of Culture and Social Issue
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• v.14 no.1_spc
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• pp.187-221
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• 2008

Although academic interest, the intersection of cognition, emotion, and motivation, is a primary goal of learning and mediates the effects of learning, the present learning environment is full of impeding factors which undermine learner's interests in learning situation. The purpose of this study is to examine current state of academic interests of Korean students and to identify several potential causes of developmental declines in academic interests. It has been consistently found that academic interests in various school subjects decrease with age and grade in school. Three potentially contributing factors to the observed loss of academic interests are mainly discussed: deprived autonomy, severe competition, and normative evaluation. Based on theories on interest and motivation, and empirical findings, various prescriptions are also suggested for designing an interest-based learning environment in order to trigger and enhance learner's academic interests.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.71-79
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• 2024

This study developed a sound art programming course using pure data to foster computational thinking and convergence of art and technology in college students who are non-computer majors. This paper presents an example of operating a curriculum that designed and developed a sound art-centered music programming subject using Pure Data, derives educational outcomes and improvement measures for classes, and presents a creative convergence education program of technology and art. It has a purpose. For the study, we looked at examples of educational programs that combine art and technology, as well as pure data and sound art, and based on this, we designed and developed a sound art programming course for non-majors. The curriculum was operated based on the developed subjects, and the results showed increased interest in programming through art and technology convergence classes, active class participation through autonomous choice, creation of a new perspective on art, improvement of computational thinking skills, collaboration and communication. The educational effect of ability enhancement was confirmed. We expect that this study will be able to present a new perspective on the convergence education of art and technology, including artistic diversity and understanding of new media according to the development of media.