• Title/Summary/Keyword: school leader

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Application of reinforcement learning to hyper-redundant system Acquisition of locomotion pattern of snake like robot

  • Ito, K.;Matsuno, F.
    • Proceedings of the Korea Inteligent Information System Society Conference
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    • 2001.01a
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    • pp.65-70
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    • 2001
  • We consider a hyper-redundant system that consists of many uniform units. The hyper-redundant system has many degrees of freedom and it can accomplish various tasks. Applysing the reinforcement learning to the hyper-redundant system is very attractive because it is possible to acquire various behaviors for various tasks automatically. In this paper we present a new reinforcement learning algorithm "Q-learning with propagation of motion". The algorithm is designed for the multi-agent systems that have strong connections. The proposed algorithm needs only one small Q-table even for a large scale system. So using the proposed algorithm, it is possible for the hyper-redundant system to learn the effective behavior. In this algorithm, only one leader agent learns the own behavior using its local information and the motion of the leader is propagated to another agents with time delay. The reward of the leader agent is given by using the whole system information. And the effective behavior of the leader is learned and the effective behavior of the system is acquired. We apply the proposed algorithm to a snake-like hyper-redundant robot. The necessary condition of the system to be Markov decision process is discussed. And the computer simulation of learning the locomotion is demonstrated. From the simulation results we find that the task of the locomotion of the robot to the desired point is learned and the winding motion is acquired. We can conclude that our proposed system and our analysis of the condition, that the system is Markov decision process, is valid.

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The Influences of Ethical Leader and Ethics Management on Employees's Organizational Citizenship Behavior: Focused on the Mediating Role of Ethical Climate (윤리적 리더와 윤리경영시스템이 조직시민행동에 미치는 영향 : 윤리풍토의 매개효과중심)

  • Suh, In-Duk;Kang, Yang-Hoon
    • Management & Information Systems Review
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    • v.30 no.4
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    • pp.441-474
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    • 2011
  • This purpose of this study is to examine the relationships of ethical leader and ethics management system with employees's organizational citizenship behavior and the mechanism underlying these relationships. A questionnaire survey was conducted involving 1,035 full-time employees from large and medium industries in Daegu and Gyeong-buk provinces. Regression analysis was used to test the hypotheses. The results showed that both of ethical leader and ethics management system were positively related with employees's organizational citizenship behavior. As expected, these relationships were mediated by organization-oriented ethical climate and social responsibility-oriented ethical climate respectively. The findings of this study are as followings: First, employees tend to show their pro-social behavior when they perceive their leaders act ethically and ethics management is well institutionalized. Second, building up the organization-oriented ethical climate and social responsibility-oriented ethical climate can be a powerful strategy to enhance employees's organizational citizenship behavior.

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Exploring the Agency of a Student Leader in Collaborative Scientific Modeling Classes in an Elementary School (초등학교의 협력적 과학 모델링 수업에서 나타난 리더의 행위주체성 탐색)

  • Uhm, Janghee;Kim, Heui-Baik
    • Journal of The Korean Association For Science Education
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    • v.41 no.4
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    • pp.339-358
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    • 2021
  • This study explores the agency of a student leader, expressed through efforts to distribute power and encourage participation in elementary scientific modeling classes. The study also analyzes the context in which the leader's agency was expressed and the context in which the development of a collective agency was constrained. The participants were 22 fifth-grade students. The leader's agency was analyzed by examining his words and actions. As a result, at the outset of the study, the leader had the most power, performing all the activities as the sole authority in a non-cooperative participation pattern. However, with reflection and help from the researcher, the leader recognized the problem and facilitated the participation of other students. He developed an identity as a teacher and demonstrated the agency. The leader's agentic behaviors can be categorized into three aspects. First, regarding the cognitive aspect, the leader helped other students participate in modeling by sharing his knowledge. Second, regarding the normative aspect, he made rules to give all students an equal voice. Third, regarding the emotional aspect, the leader acknowledged the contribution of the students, increasing their confidence. The leader's agency temporarily helped the group to overcome the student hierarchy, facilitating a cooperative participation pattern. However, the development of a collective agency was constrained. The power of the leader was partially redistributed, and the other students did not position themselves as equal to the leader. To support the leader's agency to develop into a collective agency, it is necessary to redistribute the power of the leader more equally and to change the recognition of students.

Analysis of Linguistic Interaction within a Group According to Leader's Leadership in Scientific Inquiry Activity in Elementary School (초등학생의 과학 탐구활동에서 리더의 리더십 유형에 따른 모둠 내 언어적 상호 작용 분석)

  • Park, Mung-Hee;Shin, Young-Joon
    • Journal of The Korean Association For Science Education
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    • v.32 no.4
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    • pp.760-774
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    • 2012
  • The purpose of this study was to analyze the characteristic of the linguistic interaction according to leadership type of the leader in the scientific inquiry activity groups and examine how leadership factors affect the linguistic interaction within a group. In this investigation, leaders among 12 elementary school students were chosen by considering results of the leadership diagnosis that tested 3 leadership factors: vision and promotion, assignment responsibility, and decision-making. The members of the groups were organized according to scientific inquiry ability and academic achievement; the groups were assigned to perform scientific inquiry activities. The linguistic interaction was largely divided into the cognitive domain and the affective domain for analysis. According to the results, the frequency of linguistic interaction within a group sorted by leadership type is more influenced by the cognitive domain than the affective domain. The highest frequency of linguistic interaction appeared within the group that had vision and promotion type leader. Assumedly, the vision and confidence of the vision and promotion type leader produced such an outcome. While solving the assignments, linguistic interaction in all three groups had more cognitive domain than affected domain. Linguistic interaction in cognitive domain displayed only low level of linguistic interaction in relation to the experiment itself: high level of linguistic interaction barely occurred. In the case of affected domain, active participation appeared more frequently than maintaining the mood: Interactions related to restricting the group members actions to solve the assignment appeared more frequently than those for maintaining the mood.

The Effect of Leader's Coaching and LMX on Innovative Behavior of Automotive VR Technology Researcher: Focusing on Mediated Effect of Resilience

  • Dai, Hao;Kim, Tae Hyun;Yang, Xiao Jing
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.11
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    • pp.163-170
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    • 2019
  • In this study, we tried to demonstrate the influence of leader's coaching and LMX on the member's innovation vibrator and to provide implications. This study reviewed the reader's coaching, LMX, the theories of the member's innovation behabior, resiliency, and the studies and discussions that have been carried out in the past, and finally produced five hypotheses. To verify this research theory, this study collected data from 320 automotive company researchers using VR interaction technology. The collected data were used for frequency analysis, reliability analysis, exploratory factor analysis, confirmatory factor analysis, structural equation analysis. An Empirical Analysis are confirming a result of this study can be summarized as follows. First, leader's coaching have a positive effect on resilience. Second, is have a positive effect on resilience lmx. Third, the researchers is high resilience innovative behavior to promote positive influence. Fourth, resilience leader's coaching the innovative behavior the impact on. Fifth, are lmx resilience innovative behavior the impact on. Through the conclusion and discussion section, the theoretical practical significance of this study and the limitations of the research and the direction of future research are presented.

The Analysis of Structural Relationships between Project Leader' Core Competencies and Project Success Factors (프로젝트 리더의 핵심역량과 프로젝트 성공요인간의 구조적 인과관계 분석)

  • Lee, Seol-bin;Roh, Doo-Hwan;Jung, Woon-Ho
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.11 no.2
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    • pp.197-205
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    • 2016
  • This study is intended to look into the effects of project leader's core competencies(intellectual ability, management ability, emotional ability) on the Critical success factors(job satisfaction, organizational commitment, group cohesion) of project by environmental variables of organization. The results of this study were summarized as follows. First, the intellectual ability, management ability and emotional ability had a significant effect on the job satisfaction, organizational commitment and group cohesion. Second, the functional organization and project organization had a partial effect on project leader's core competencies. But the individual-centered organization had no moderating effect. For the project organization, all intellectual ability, management ability and emotional ability had a moderating effect on the organizational commitment. Consequently, project leader's core competencies are mechanisms to improve the job satisfaction, organizational commitment and group cohesion, and they have a different moderating effect according to the type of organization.

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The Effects of a Leader's Behavioral Integrity on Subordinates' Intention to Leave: Cognitive and Affective Trust as Mediating Variables (리더의 행동적 성실성이 부하의 이직의도에 미치는 영향: 인지적 신뢰와 정서적 신뢰의 매개효과를 중심으로)

  • Moon, Jee-Young;Lee, Jung-Hun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.12
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    • pp.8210-8221
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    • 2015
  • The goal of this study is to examine the effects of a leader's behavioral integrity on subordinates' intention to leave with the mediating roles of their cognitive and affective trust in their leader. After collecting data from 357 employees in a variety of organizations, we tested hypotheses with structural equation modeling(SEM). This study shows that there are statistically significant relationships among a leader's behavioral integrity, subordinates' cognitive/affective trust and intention to leave. A leader's behavioral integrity with the fully mediating roles of subordinates' cognitive and affective trust affects on their intention to leave negatively. Limitations in this study and suggestions for the future study are discussed.

The Effect of Job Demand, Leader Member Exchange, and Recovery Experience from Job Stress on Job Embeddedness of Workers in the Manufacturing Industry (제조업체 근로자의 직무요구와 상사-부하 교환관계 및 직무 스트레스 회복경험이 직무착근도에 미치는 영향)

  • Lee, Youn Hyang;Lee, Ji Hyun;Jun, So Yeun
    • Korean Journal of Occupational Health Nursing
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    • v.26 no.3
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    • pp.172-183
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    • 2017
  • Purpose: This study was conducted to investigate factors affecting the job embeddedness of workers in the manufacturing industry. Methods: The survey was conducted on 261 workers of the manufacturing industry in P city and Y city with the help of a structured self-report questionnaire, administered between June 10 and June 30, 2017. Data were analyzed using descriptive statistics, a t-test, ANOVA, a $Scheff{\acute{e}}s$ test, Pearson's correlation coefficients, and stepwise multiple regression. Results: There were significant differences in job embeddedness according to educational level, marital status, jobs and types of employment, satisfaction with salary, stress level, and the perceived health status of the subjects. There were significant positive correlations between role clarity of job demands (r=.45), leader member exchange (r=.48), recovery experience from job stress (r=.27), and job embeddedness. From the multiple regression analysis, the most significant factors affecting job embeddedness were found to be leader member exchange (${\beta}=.43$), recovery experience from job stress (${\beta}=.22$), and job demand (${\beta}=.15$). These variables explained 35.0% of the total variance in job embeddedness. Conclusion: In order to increase job embeddedness of workers in the manufacturing industry, it is necessary to prepare measures to increase job demand, leader member exchange, and recovery experience from job stress.

A study on the effects of safety leadership and trust in leader on safety behavior mediated by workers' involvement and safety knowledge (안전 리더십과 리더 신뢰가 근로자 참여 및 안전 지식을 매개로 안전 행동에 미치는 영향 연구)

  • Jung-hoon Lim;Hyoung-Yong Lee
    • Journal of Intelligence and Information Systems
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    • v.29 no.3
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    • pp.103-123
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    • 2023
  • This study empirically investigated the relationship between workers' safety behavior and safety leadership, trust in leader, workers' involvement, and safety knowledge in the enterprise, and analyzed the role of the factors to identify and analyze factors that enhance workers' safety behavior that contribute to the prevention of major accidents in the enterprise. When industrial accidents occur, companies have to bear huge loss costs due to direct costs of compensating the victims and indirect costs such as human loss, material loss, production loss, and time loss. Based on the results of previous studies, this study investigated the effects of managerial safety leadership and workers' trust in leader on safety behavior through the mediation of workers' involvement and safety knowledge among production, technical, and labor workers in the manufacturing industry. Statistical analysis was conducted on 271 manufacturing workers using SPSS and PLS. The results showed that safety leadership and trust in leader can lead to workers' involvement and have a positive effect on workers' safety knowledge acquisition, which can lead to workers' safety behavior.

Performance Analysis of Entropy-based Multi-Robot Cooperative Systems in a MANET

  • Kim, Sang-Chul;Shin, Kee-Hyun;Woo, Chong-Woo;Eom, Yun-Shick;Lee, Jae-Min
    • International Journal of Control, Automation, and Systems
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    • v.6 no.5
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    • pp.722-730
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    • 2008
  • This paper proposes two novel algorithms enabling mobile robots to cooperate with each other in a reliability-based system and a time-critical system. In the reliability-based cooperative system, the concepts of a mobile ad hoc network (MANET) and an object entropy are adopted in order to coordinate a specific task. A logical robot group is created based on the exchange of request and reply messages in a robot communication group whose organization depends on transmission range. In the time-critical cooperative system, relational entropy is used to define the relationship between mobile robots. A group leader is selected based on optimizing power consumption. The proposed algorithm has been verified based on the computer-based simulation and soccer robot experiment. The performance metrics are defined. The metrics include the number of messages needed to make a logical robot group and to obtain the relationship of robots and the power consumption to select a group leader. They are verified by simulation and experiment.