• Korean Journal of Human Ecology
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• v.17 no.2
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• pp.223-233
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• 2008

The purpose of this study was to find out conflict of preservice teachers affected by the role recognition and performance of cooperating teachers in the early childhood education practicum. The following research questions were established in order to achieve this purpose. First, Is there any differences in conflict of preservice teachers according to their personal variables? Second, Is there any differences in the role recognition and performance of cooperating teachers according to their personal variables? Third, Is there any differences in conflict of preservice teachers according to the role recognition and performance of cooperating teachers? The subjects of this study were 214 pairs of cooperating teachers who taught preservice teachers. The data were collected with the role recognition and performance of cooperating teachers and conflict of preservice teacher instrument and analyzed by t-test and ANOVA using SPSS 14.0 software. The results show that there was significantly difference conflict of preservice teachers according to their personal variables. Second, there was significantly differences the role recognition and performance of cooperating teachers according to their personal variables. Third, there was significantly differences conflict of preservice teachers affected by the role recognition and performance of cooperating teachers in the early childhood education practicum.

• Korean Journal of Child Studies
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• v.22 no.4
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• pp.213-224
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• 2001

This study was conducted to explore the communication processes and contents between cooperating teachers and their student teachers during student teaching conferences. To reach this purpose, five research questions were generated. 15 cooperating teachers and their 15 student teachers from 9 kindergartens located in Seoul and Ilsan city participated in the study. The conferences of each dyad were tape-recorded for further analysis. "Analyzing System for Interaction of Learning" designed by Thies-Sprinthall was used to analyze the data. The research findings were as follows: First, cooperating teachers talked more than the student teacher during the conference. Second, the cooperating teachers used more directive talk than indirective talk. Third, the speaking patterns of the student teachers revealed that student teachers express their opinions frequently(55.6% of total pattern). Fourth, cooperating teachers focused their remarks more on the instructional issues(48.5%). The cooperating teachers emphasized on the operation of class(23.1%), other subject(12.3%), practical guidance(10.7%), self-assesment(5.4%) in order. Fifth, the most emphasized issue by student teachers was the instructional matters which was reported by 53.4% of the entire subjects.

• Korean Journal of Childcare and Education
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• v.13 no.6
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• pp.87-109
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• 2017

Objective: The purpose of this study is to examine the relationship between student teachers' perceptions on cooperating teacher's professionalism and motivation to become a teacher. Methods: The participants were 399 student teachers studying child care and education at two-year or four-year colleges in Seoul, Gyeonggi, Incheon, South Chungcheong, and Daejeon. They completed questionnaires on student teachers' perceptions on cooperating teacher's professionalism and motivation to become a teacher. The data were analyzed using ANOVA, t-test, and partial-correlation analyses. Results: There were three findings from this study. First, there was a significant difference in student teachers' perceptions on cooperating teacher's professionalism depending on the type of child care center and education system, rather than the type of class. Second, there was a significant difference in student teachers' motivation to become a teacher depending on the students' education system. Third, student teachers' perceptions on their cooperating teacher's professionalism correlated with their motivation to become a teacher. Conclusion/Implications: This study suggests that student teachers' perceptions on cooperating teacher's professionalism is significantly different depending on the type of child care center or educational system and is related with motivation to become a teacher.

• Journal of Institute of Control, Robotics and Systems
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• v.16 no.2
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• pp.101-106
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• 2010

Researches on air-ground robot cooperating system has been made recently. The cooperation among homogeneous robots focused on the architecture of the system, quality and influence of the communication. In contrast, the cooperation among heterogeneous robots such as aerial vehicle and ground vehicle robots has not been much handled. There are a couple of main points for those air-ground cooperating robots. One is using UAV (Unmanned Aerial Vehicle) as an extra sensor of UGV (Unmanned Ground Vehicle). This kind of application is usually used in situations such as guiding UGV to an appropriate path which could be better determined from the eye in the sky as UAV. The other main application of air-ground cooperating robot system is the localization. By combining sensor information from both UAV and UGV, the robot system as a whole can localize a target object or find features in the environment with better performance than UGV or UAV alone. Although these applications are recently studied in many different ways and devices, there are still a lot of possibilities in the field of air-ground cooperating robot systems. We introduce those research fields in this paper.

• Journal of Korean Home Economics Education Association
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• v.9 no.2
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• pp.87-100
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• 1997

The purpose of this study were to investigate and no investigate and to compare perceptions of home economics teachers and educators regarding home economics student teaching pratice, thereby to provide fundamental information for improving home economics student teaching pratice. The specific objectives of this study were at follows. 1. To determine and compare the perceptions of home economics teachers and teacher educators regarding the importance and achievement of (1) the objectives of student teaching, (2) the experiences of student teaching, (3) procedures for selecting cooperating teachers, (4) roles and responsibilities of cooperating teachers, and (5) roles and responsibilities of university supervisors. 2. To identify problems and revisions about home economics student teaching pratice suggested by home economics teachers and teacher educators. The subjects in this study included 90 home economics teachers in 500 girls’middle schools and 13 teacher educators in 21 universities with home economics education department in Korea. For this study, the Habedi’s instruments were used through testing validity and reliability. The data of this study were analyzed by using mean, standard deviation, t-test, and content analysis. The results of this study were as follow；1. The areas with the difference of perceptions of the importance between the two groups were objectives of student teaching, experiences of student teaching, procedures for selecting cooperating teachers, and roles and responsibilities of cooperating teachers. 2. Regarding problems about home economics students teaching practice, home economics teachers indicated difficulty in performing adequate student teaching because of reduction in class hours, and lack of student teachers’positive attitude in performing student teaching, while teacher educators indicated having reluctancy of cooperating school to admit student teachers, and difference in experiences of student teachers because of disparity among cooperating schools. As solutions about the problems of home economics student teaching practice, home economics teachers suggested that student teaching course should be limited to the students qualified for teaching and that class observation and teaching practice in real class should be emphasized, while teacher educators suggested that student teaching should be performed adequately by providing institutions to control student teaching practice teacher should be made efficient by examining the scales of cooperating schools.

• Proceedings of the IEEK Conference
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• 2003.07c
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• pp.2709-2712
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• 2003

In this paper, dynamic constraints are considered for the analysis of manipulability of robotics systems comprised of two cooperating arms. Given bounds on the torques of joint actuators for each robot, the purpose of this study is to derive the bounds of task acceleration of object carried by the system. Under the assumption of complete constraint contact, a set of examplar polytope describing acceleration bounds of two cooperating robots are included.

• 제어로봇시스템학회:학술대회논문집
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• 1996.10b
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• pp.904-907
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• 1996

In this paper, we propose an efficient collision-free path planning method of two cooperating robot manipulators grasping a common object rigidly. For given two robots and an object, the procedure is described which constructs the reduced dimensional configuration space by the kinematic analysis of two cooperating robot manipulators. A path planning algorithm without explicit representation of configuration obstacles is also described. The primary steps of the algorithm is as follows. First, we compute a graph which represents the skeleton of the free configuration space. Second, a connection between an initial and a goal configuration to the graph is searched to find a collision-free path.

• Journal of the Korean School Mathematics Society
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• v.17 no.4
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• pp.747-769
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• 2014

The purposes of this study were to investigate pre-service mathematics teachers' perceptions of the role of cooperating teachers and teacher interactions during teaching practicum. Thirty-four pre-service mathematics teachers who finished student teaching participated in the study. The researcher collected data from various sources such as a questionnaire, interviews, and written documents. According to the results of the study, more than 50 percent of the participants showed negative responses to all of the questionnaire items on teaching activities or guidance of cooperating teachers. Cooperating teachers mainly played a role in the stage of reflection of student teacher's teaching practice, and they provided specific feedback and guidance of teaching and learning methods and contents. Cooperating teachers played roles as (mathematics) teacher educators, classroom observers, and co-teachers, but their roles as teacher educators or co-teachers should be more stressed for pre-service mathematics teachers' professional development.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.289-290
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• 2012

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.9
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• pp.4326-4341
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• 2016

In this paper, an adjustable multiple relay selection (MRS) scheme for cooperative communication with amplify-and-forward (AF) relay under frequency selective channels is proposed. In the proposed scheme, the relays are ordered firstly by the steady-state mean square error (MSE), then the relays are sequentially selected out from N relays and the number of cooperating relays is adjusted dynamically according to the steady-state mean square joint error (MSJE). The aim of this work is to dynamically estimate the optimum number N_o of cooperating relays. Optimum means the minimum number of cooperating relays, N_o, achieving the minimum level of steady-state MSJE. Numerical results verify the analyses and show that the scheme can adaptively adjust the number of cooperating relays, and outperform conventional relay selection schemes. Hence, the proposed scheme provides better tradeoff between BER performance and spectral efficiency and to save more energy in cooperative wireless networks.