• 한국수학사학회지
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• 제18권2호
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• pp.55-74
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• 2005

본 논문은 수학 교육방법 개선을 위한 노력의 하나로 학습 모델에 대하여 연구하였다. 그 중 특히 협동학습 유형을 역사적으로 종합 정리하고 협동학습의 이론적 배경과 소집단 협동학습의 필요성 그리고 협동학습과 전통 조별학습의 차이점 등을 조사하였다. 또한 협동학습에서 나타나는 특징과 다양한 협동학습의 유형을 제시하고 그 효과에 대하여 연구를 하였다. 본 연구에서는 역사적으로 수학교육학적 견지에서 의미 있는 협동학습 유형으로 팀보조개별학습(TAI: Team-Assisted Individualization), 직소우(JIGSAW) 협동 학습, 직소우II(JIGSAW II) 협동 학습, 직소우III(JIGSAW III) 협동 학습, STAD(Student Team-Achievement division) 협동학습, 팀경쟁 협동학습(TGT: Teams-Games-Tournament) 등을 집중적으로 연구하였다.

• 대한물리치료과학회지
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• 제28권3호
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• pp.1-10
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• 2021

Background: The purpose of this study is to investigate the effect of the online team project based learning on problem-solving, cooperative self-efficacy, and cooperative self-regulation of college students. Design: Single group pre-post design. Methods: The online team project based learning was conducted for a total of 92 college students for 8 weeks. A survey was conducted on problem-solving ability, cooperative self-efficacy, and cooperative self-regulation. In the online team project-based class, two projects were performed. It consists of video lectures and real-time video conferencing. Through the real-time video conference, the project was carried out based on discussion among learners and feedback was provided. Results: There was a significant difference in the change in problem-solving ability compared to before learning (p<0.05). As a result of the evaluation of cooperative self-efficacy, there was a significant difference (p<0.05). There was a significant differences in cooperative self-regulation compared to before learning (p<0.05). Conclusion: The online team project-based learning are effective in improving learners' problem-solving ability, cooperative self-efficacy, and cooperative self-regulation.

• 인터넷정보학회논문지
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• 제12권2호
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• pp.1-8
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• 2011

본 논문에서는 무선인지시스템에서 스펙트럼 센싱을 효율적으로 수행하기 위한 선택적 협력 스펙트럼 검출 기법을 제안한다. 제안된 알고리즘에서는 각 무선인지 사용자가 자신의 유도비(likelihood ratio)를 기반으로 자신의 센싱 신뢰도를 평가하고, 센싱 신뢰도에 따른 타이머를 활용하는 경쟁기반의 센싱 결과 보고 메커니즘을 활용한다. 이를 통해, 제안된 선택적 협력 스펙트럼 기법에서는 가장 높은 센싱 신뢰도를 갖는 무선인지 사용자만이 국부 스펙트럼 센싱값을 융합센터로 전송함으로써, 스펙트럼 센싱의 성능을 일정한 레벨로 유지하고, 협력 스펙트럼 센싱의 단점인 제어 트래픽 및 협력 센싱 시간을 줄이는 이점을 갖는다.

• Journal of Communications and Networks
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• 제12권5호
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• pp.442-448
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• 2010

Cooperative relaying methods have attracted a lot of interest in the past few years. A conventional cooperative relaying scheme has a source, a destination, and a single relay. This cooperative scheme can support one symbol transmission per time slot, and is caned full rate transmission. However, existing fun rate cooperative relay approaches provide asymmetrical gain for different transmitted symbols. In this paper, we propose a cooperative relaying scheme that is assisted with dual relays and provides full transmission rate with the same macro-diversity to each symbol. We also address equalization for the dual relay transmission system in addition to addressing the issues concerning the improvement of system performance in terms of optimal power allocations.

• 한국학교수학회논문집
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• 제1권1호
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• pp.197-205
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• 1998

This study aims to examine how cooperative teaming of small ability level groups influences the enhancement of their scholastic achievement in mathematics. The conclusions are as follows; 1. The students which participate in cooperative learning in small ability level groups demonstrate academic improvement over those that participate in non-cooperative learning groups. 2. In particular, this method is more effective for high-level classes, than for middle or low-level students. 3. The learners' perception, interest and attitude towards mathematics has not changed through their placement in small ability groups involved in cooperative activities.

• 한국실내디자인학회논문집
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• 제19권2호
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• pp.216-224
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• 2010

This study aims to examine a special type of hospital known as Western Oriental medicine treatment designed to provide the best treatment by combining the advantages of Western and Oriental medicine, The actual conditions of the organizations and operations of O.P.D and how the cooperative treatment between Western and Oriental medicine is conducted at general hospitals that operate the cooperative treatment by applying a drawing analysis and an area analysis, and provide materials that help design hospitals that offers the cooperative treatment based on the information. According to the results of this study, the forms of the cooperative treatment between Western and Oriental medicine included several methods; to operate the cooperative center separately between an Oriental hospital and a general hospital, to operate the cooperative hospital, using several floors for an Oriental hospital inside a general hospital, and to operate the cooperative center in specialized centers inside a general hospital and the type of cluster that offers the cooperative treatment in specialized centers is known as the best appropriate treatment.

• 한국학교보건학회지
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• 제23권2호
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• pp.228-236
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• 2010

Purpose: This research was conducted to compare sex-related knowledge and attitude of 6th-grade elementary school students who participated in the field based learning and those with cooperative learning methods. Methods: The data were collected from June to July in 2009. The subjects of the study were recruited from the classes of the 6th grade conveniently assigned from the D elementary school located in Daejeon metro city. Total of 60 students were assigned either to the field based learning group, and the other 60 students to the cooperative learning group. The field based learning group received sex education at the Daejean Youth Sexuality Culture Center for 3 hours. And the cooperative learning group received sex education by cooperative learning method at the classroom for 40 minutes per session, once a week, for 3 weeks. The sex-related knowledge and attitude scales developed by Lee (2004) were used. The data were analyzed by $x^2$-test, Fisher's exact test, and t-test using the SPSS/WIN V. 12.0 program. Results: The results were as follows. 1. Sex-related knowledge was not significantly different between the cooperative learning and the field based learning group. 2. Sex-related attitude was not significantly different between the cooperative learning and the field based learning group. Conclusion: In this study, sex-related knowledge and sex-related attitude of the cooperative learning group and the field based learning group were different from the lecture method groups in the earlier study. It is worthy of notice that the cooperative learning group and the field based learning group took relatively less time to improve their knowlede and attitude than the earlier lecture based group did.

• 한국통신학회논문지
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• 제37C권11호
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• pp.1084-1093
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• 2012

멀티홉 네트워크에서 TPSN, RBS, FTSP와 같은 기존의 시간 동기화(TS : Tims Synchronization) 방법들은 네트워크의 홉수가 증가 할 경우 TS 오류 또한 증가하게 된다는 단점을 가지고 있다. 이는 멀티홉 네트워크를 통해 구현되는 passive multistatic 레이더 시스템 및 무선 센서 네트워크 노드들 간의 시간 동기화 오류를 증가시켜 시스템 정확도를 저하시키는 중요한 원인이 된다. 따라서 이 논문에서는 동시 협동 전송(CCT : Concurrent Cooperative Transmission)과 반협동 스펙트럼 융합 전송(SCSF : Semi-Cooperative Spectrum Fusion)의 두 종류의 CT (Cooperative Transmission)을 이용한 시간 동기화 방법을 제안하고자 한다. CT를 이용하면 시간 정보가 전달되는 데에 필요한 홉수를 줄여 결과적으로 TS 오류를 줄일 수 있다는 장점을 가지게 된다. CCT는 협동하고 있는 노드들이 디지털하게 인코딩된 동일한 메시지를 각각의 직교한(orthogonal) 채널을 통해서 동시에 전송하면, 수신노드는 이를 수신하여 통합하여 디코딩함으로써 diversity gain을 얻는 전송방식이다. 반면 SCSF는 각각의 노드들이 상관성 있는 아날로그 데이터를 스펙트럼에 실어 동시에 전송하는 방식이다. 이 논문에서는 이 두 가지의 전송방식을 융합한 아날로그 및 디지털 협동 전송 시간 동기화 프로토콜, 즉 CANDI 프로토콜을 제안하고, 이 프로토콜이 멀티홉 네트워크에서 기존의 시간 동기화 방식인 TPSN과 비교하여 상당히 큰 격차로 시간 오류를 줄이는 것을 시뮬레이션을 통해서 증명하고자 한다.

• 한국치위생학회지
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• 제15권2호
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• pp.303-310
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• 2015

Objectives: The purpose of this study was to examine the influence of cooperative learning on the learning attitude and self-directed learning capability of learners. Methods: The subjects were 50 sophomores enrolled in cooperative learning for 12-week period from March to June, 2014. A self-reported questionnaire was completed by the subjects. The instruments were 16 questions of learning attitude, 32 questions of self-directed learning, academic achievement, and 12 questions of satisfaction with instruction by Likert 5 scale. Cronbach's alpha was 0.84 in the previous study and 0.78 in this study. Self-directed learning was modified by Yoo and Cheong. Cronbach's alpha of self-directed learning was 0.86 in this study. Academic achievement was assessed by before and after the cooperative learning class. Cronbach's alpha was 0.95 in this study. Their learning attitude and self-directed learning capability were evaluated before and after the cooperative learning, and their satisfaction with the instruction and academic achievement were assessed by the written examination. Results: The score of learning attitude increased from 2.89 in the pretest to 3.38 in the posttest. The self-directed learning of the students increased from 2.98 in the pretest to 3.48 in the posttest. The academic achievement of students also increased from 82.0 in the pretest to 85.2 in the posttest. The satisfaction with instruction was 4.24 of Likert 5 scale. There were significant differences in satisfaction with instruction, cooperative learning and academic achievement. Conclusions: It is important to develop the cooperative learning program linked to self-directed learning for the dental hygiene students continuously. This study will provide the basic data and information for the development of new teaching methods for the dental hygiene.

• 대한예방한의학회지
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• 제13권3호
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• pp.29-41
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• 2009

Objectives : This study was performed to compare consciousness of doctors on cooperative practices of western medicine and traditional Korean medicine, and to provide policy implication for development of cooperative practices. Methods : The structured questionnaires were mailed to 132 doctors working in non-cooperative practicing university hospital and 77 doctors working in cooperative practicing hospitals in Busan metropolitan city. The response rate was 40.2% and 40.3% respectively. This survey was performed from 10 Oct. 2008 to 31 Oct. 2008. Results : The doctors working in general hospital had comparatively negative consciousness on basic concept, value and necessity for cooperative practices and traditional Korean medicine. In regards with disease treatment's effectiveness of cooperative practices, both groups evaluated musculoskeletal and immune disease were more effective than others. There were positive relationships between perception for cost-effectiveness and consciousness on intention to participate cooperative practices(p<0.05). Also doctors who experienced traditional medicine treatment had positive consciousness on cooperative practices(p=0.05). Conclusions : To activate cooperative practices of western medicine and traditional Korean medicine, some efforts should be carried out. These include promoting cooperative education programs in medical schools and traditional Korean medical schools, doing research on cost-effectiveness of cooperative practices, and trying to minimize legal and systemic restrictions for cooperative practices.