• 한국경영과학회지
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• 제25권4호
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• pp.67-80
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• 2000

Symbiotic evolutionary algorithms, also called cooperative coevolutionary algorithms, are stochastic search algorithms that imitate the biological coevolution process through symbiotic interactions. In the algorithms, the fitness evaluation of an individual required first selecting symbiotic partners of the individual. Several partner selection strategies are provided. The goal of this study is to analyze how much partnering strategies can influence the performance of the algorithms. With two types of test-bed problems: the NKC model and the binary string covering problem, extensive experiments are carried out to compare the performance of partnering strategies, using the analysis of variance. The experimental results indicate that there does not exist statistically significant difference in their performance.

• 대한수학교육학회지:수학교육학연구
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• 제12권3호
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• pp.425-442
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• 2002

One of important topics in mathematics education research is communication. Mathematical communication consists of writing, reading, listening and speaking. But, research on reading has not yet to have a commensurate emphasis, despite important changes that have occurred in the theory and practice of communication. This study is intended to search for reading in school mathematics. First, we explore theories of reading and reading instruction. Second, the factors involved in reading are examined. These factors are learners, texts and teachers. Third, we provide a variety of reading strategies that are reading and enacting strategy, reconstructing strategy, presupposing strategy, becoming an author strategy, sketch to stretch strategy and reading- cooperative learning strategy. They will help students to foster students' mathematical ability as well as reading skill.

• 지능정보연구
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• 제11권3호
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• pp.45-55
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• 2005

본 논문에서는 카오스 궤적 표면에서 불안정한 리미트 사이클을 가지는 카오스 무인 비행체의 동기화 기법을 제안하였다. 카오스 궤적 표면에서의 모든 장애물들은 불안정한 리미트 사이클을 가지는 반데어 폴(Van der Pol) 방정식을 가지고 있다고 가정하였다. 제안한 기법들은 만약 2대의 카오스 무인 비행체 중 한대가 동기화 명령을 받으면 나머지 한대의 무인 비행체는 임의의 표면상에 카오스적인 탐색을 하는 동안 동일한 궤적을 가지고 추종하게 됨을 확인하였다.

• 한국문헌정보학회지
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• 제39권4호
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• pp.139-161
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• 2005

이 연구의 목적은 국내 도서관과 출판계의 전략적 제휴방안을 모색하는 있다. 대다수 인쇄자료의 선형적 유통경로 (저자-출판사-(서점)-소비자)를 감안하면 생산주체인 출판계와 제도시장인 도서관은 갈등과 반목보다 호혜정신에 입각한 전략적 제휴가 시급하다. 따라서 본 연구는 지식정보(도서) 유통위기의 실체와 나비효과를 배경정보로 삼아 도서관계와 출판계의 함수관계를 해명하고, 지식문화의 기반을 강화하기 위한 전략적 제휴방안을 제시하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
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• pp.51-54
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• 2000

Due to the emerging of high-speed network, lots of interests of access to remote data have increased. Those interests motivate using of Cooperative Caching that uses remote cache like local cache by sharing other clients' cache. The conventional algorithm like GMS(Global Memory Service) has some disadvantages that occurred bottleneck and decreasing performance because of exchanges of many messages to server or manager. On the other hand, Hint-based algorithm resolves a GMS's server bottleneck as each client has hint information of all blocks. But Hint-based algorithm also causes some problems such as inaccurate information in it, if it has too old hint information. In this paper, we offer the policy that supplement bottleneck and inaccuracy； by using file identifier that can search for the lookup table and by exchanging oldest block information between each client periodically.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.236-241
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• 2009

After analyzing the characteristics of the cooling dryer, the mixed cooling dryer was developed by adding the desiccant dryer which supplement the cooling dryer's demerits. Also, the hybrid desiccant cooling dryer was developed to use effectively the exhaust heat energy of the cooling dryer. It could make a more that 20 percent reduction in energy compared with the mixed desiccant cooling dryer. It has become essential to supply this equipment and search the suitable drying product.

• 기술경영경제학회:학술대회논문집
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• 기술경영경제학회 1999년도 제16회 동계학술발표회 논문집
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• pp.255-278
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• 1999

R&D association is a very important institution to promote inter-firm technological cooperation, In Korea, they have begun to be established in 1982, and at now 56 R&D associations are working. The purpose of this study is In analyze the problems of the R&D associations, and to suggest a new direction of their future development Their problems were analyzed from the perspective of cooperative R&D mechanisms, especially with a new concept of R&D community : search community, planning community, community of research itself. This study emphases the importance of the R&D association's role as a planning community, and the institutional linkage between R&D association and National R&D program through the introduction of design-in planning system.

• 제어로봇시스템학회논문지
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• 제19권12호
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• pp.1132-1137
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• 2013

In swarm robot systems, it is vital to maintain network connectivity to ensure cooperative behavior between robots. This paper deals with the behavior control algorithm of the swarm robots for maintaining network connectivity. To do this, we divide swarm robots into search-robots, base-robots, and relay-robots. Using these robots, we propose behavior control algorithm to maintain network connectivity. The behavior control algorithms to maintain network connectivity are proposed for the local path planning using virtual force and global path planning using the Delaunay triangulation, respectively. Finally, we demonstrate the effectiveness and applicability of the proposed method through some simulations.

• 전자공학회논문지S
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• 제34S권8호
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• pp.56-64
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• 1997

In distributed autonomous robotic systems, each robot must behaves by itself according to the its states and environements, and if necessary, must cooperates with other orbots in order to carray out a given task. Therefore it is essential that each robot has both learning and evolution ability to adapt the dynamic environments. In this paper, the new learning and evolution method based on reinforement learning having delayed reward ability and distributed genectic algorithms is proposed for behavior learning and evolution of collective autonomous mobile robots. Reinforement learning having delayed reward is still useful even though when there is no immediate reward. And by distributed genetic algorithm exchanging the chromosome acquired under different environments by communication each robot can improve its behavior ability. Specially, in order to improve the perfodrmance of evolution, selective crossover using the characteristic of reinforcement learning is adopted in this paper, we verify the effectiveness of the proposed method by applying it to cooperative search problem.

• International Journal of Advanced Culture Technology
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• 제10권4호
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• pp.94-101
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• 2022

For the purpose of this study, in order to adapt to the era of intelligent informatization in the 4th Industrial Revolution, we propose an information processing and analysis technology education plan that can solve problems through information search and collection. To this end, first, we explored the necessity and content of information processing and analysis technology in hyperconnection, hyperintelligence, and hyperconvergence under the theme of various majors in IT, focusing on understanding information technology in the software and hardware curriculum. Second, the curriculum improvement plan was proposed based on information literacy, computing thinking skills, and cooperative problem-solving skills for efficient software and hardware-linked curriculum operation based on information processing and analysis technology. Third, I would like to emphasize that it is essential to secure connectivity between other studies for future innovation in new technologies related to computer technology, machine technology, and infrastructure technology through hyperconnection, hyperintelligence, and hyperconvergence in the software and hardware curriculum. Through this, we intend to cultivate creative convergence talent required by the future society.