• Proceedings of the KIEE Conference
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• 2000.07c
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• pp.2002-2004
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• 2000

The discharge processes in electro-negative gases with non-uniform field gape are composed of the formation of pulsed streamer corona, the transition of the streamers into leader step, the temporal development of the leader channel, and the stepped propagation of leader through the gap. In this paper, the first corona inception characteristics in $SF_6$ gas and $SF_{6}-N_{2}$ mixtures, related to the propagation of loader and the space charge effect, were experimentally investigated with positive and negative transient impulse voltages.

• Journal of Distribution Science
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• v.13 no.11
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• pp.23-30
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• 2015

Purpose - Small- and medium-sized enterprises often rely on the owner's personal characteristics. This study aims to verify the impact of the awareness of such a business leader's sincerity and the sincerity of their leader-member exchange (LMX) on employee psychological ownership and organizational commitment. The findings offer clues to how small- and medium-sized company leaders should engage with employees. Research design, data, and methodology - A total of 289 valid questionnaires were examined using frequency, descriptive statistics, and correlation analyses and structured equation modeling. Results - Authentic leadership and LMX were both found to have a positive impact on each trust factor, each trust factor had a positive impact on psychological ownership and organizational commitment, and psychological ownership had a positive impact on organizational commitment. Conclusion - These results suggest that small- and medium-size company leaders should use self-awareness and self-regulation to encourage the recognition of their sincerity, and strive to achieve a positive relationship with employees. It also suggests that leaders should improve trust between employees and establish various strategies to enable employee psychological ownership.

• Journal of the Korean Chemical Society
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• v.50 no.6
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• pp.494-505
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• 2006

This study was performed for 7th grade students to analyze by leader style, the verbal interactions between students in a small group in an MBL(Microcomputer-Based Laboratory) experiment class. The study was performed after arranging the students into four kinds of groups, including groups with leaders of inclusive, persuasive, and alienating styles and a group with no clear leader. The analysis of total frequencies of verbal interaction revealed that the group with an inclusive leader showed the highest frequency of verbal interaction, followed by the group with a persuasive leader, an alienating leader and lastly, the group with no clear leader. The group with an inclusive leader showed the highest frequency of interaction from a cognitive aspect related to question(Q), response(R), making suggestion(MS), and receiving opinions(RO), while interactions from an affective aspect related to behavioral participation(BP) and students' attitudes(SA) were observed more often in a group including an alienating leader than in any other group. An analysis of characteristics of verbal interaction according to leader style showed that a group with an inclusive leader had a permissive atmosphere. It also showed that all members of the group actively participated in discussion and they had a sense of belonging and self-pride with their group. In a group with a persuasive leader, the leader took the lead of most experimental and discussion activities and he was rarely challenged by other students in the group. Rather, other group members showed a tendency to depend on their leader. In a group with an alienating leader, the relationship between leader and members of the group was not harmonious and unfiltered expressions of dissatisfaction and ignorance often took place. The leader's lack of concern about members' low achievement became an obstacle in active discussion. In a group with no clear leader, most interactions during discussion were short and simple. Many answers to the question given by their members were not clear and the interactions were sometimes interrupted for a short while.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.28 no.10
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• pp.82-88
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• 2014

This paper presents the results of model tests for the attachment process of lightning leader to ground which is one of poorly understood processes of cloud-to-ground lightning discharges. In order to simulate the attachment process of lightning leader to ground, we investigated the discharge characteristics of air gap between the tip of needle-shaped electrode and the soil surface as a parameter of moisture content in soils when the positive and negative $1.2/50{\mu}s$ lightning impulse voltages are applied. The breakdown voltage and the discharge light were observed. As a result, the attachment processes of lightning leader to ground are strongly dependent on the grain size and the moisture content of soils. The time to breakdown was shortened with increasing the magnitude of incident impulse voltages. The delay time from application of the highest voltage to breakdown in sand is shortened with increasing the moisture content. The delay time from application of the voltage to breakdown in gravel varied from about $0.5{\mu}s$ to several ${\mu}s$. As the moisture content in soil increases, the breakdown voltages are decreased and the breakdown voltage versus time to breakdown curves are shifted toward the lower side. The results obtained in this work are similar to those for non-uniform air gap stressed by lightning impulse voltages.

• Journal of Service Research and Studies
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• v.7 no.4
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• pp.83-107
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• 2017

The purpose of this study is to suggest a customized servant leadership by exploring the effects of stewardship and community building factors on the subordinates' trust in leader of lower hierarchy and their job engagement. Regression analysis showed that stewardship is higher than community building in terms of its influence on job engagement, while community building outstrips stewardship in terms of trust in leader. Specifically, two items of stewardship factor - valuing the opinions of the subordinates in decision-making, and sacrificing without giving priority to the leader's self-interest - influenced the subordinates' trust in their leader. Of the items in community building, cooperating rather than competition, abiding by the principles in performing the work, the leader's not seeking recognition or compensation, and giving the subordinates the necessary authority to perform their work put impacts on the subordinates' trust in the leader, as well. As for job engagement, helping subordinates grow and develop, and, if necessary, taking the risk of challenging the job have a significant impact. Among the items of community building, it was found that the leader's not seeking recognition or compensation, and keeping the principles strictly in performing her duties promote job engagement. Based on these results, we propose to managers of human resources department the selection and training of tailored talents to meet the environmental characteristics of each organization, while avoiding programs for hiring and training personnel equipped with the uniform qualities of servant leadership.

• Journal of Agricultural Extension & Community Development
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• v.21 no.1
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• pp.177-217
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• 2014

The purpose of this study is to examine the relation between Program Satisfaction and the leadership types of who participating in the program of village lifelong education leader. The detail goals of this study are to (1) understand the concepts about the training program of village lifelong education leader. (2) study the theory related to the leadership of village lifelong education leader. (3) examine the relation between program satisfaction and leadership types by personal characteristics. The results of this study are as follows: First, there is the significant difference between the transactional leadership and the exceptive management leadership which is the transactional leadership's sub-type in age. Second, there is the significant difference between the exceptive management leadership which transactional leadership's sub-type and charisma leadership that is transformational leadership's sub-type by participated in or not the lifelong education program before. Third, the average value of the transformational leadership is more higher than the transactional leader's average value. Fourth. the ranking of the transformational leaders' activities are as follows; (1) individual relationship (2) spiritual motivation (3) intelligence stimulus (4) charisma. Fifth, the ranking of the transactional leader's activities are as follows; (1) reward to achievement (2) exceptional management.

• Proceedings of the KIEE Conference
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• 1987.11a
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• pp.484-485
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• 1987

The characteristics of leader development in rod -to- plane air gap (20cm gap length) under positive impulse potentials have been studied by means of 2-photomultiplier technique and image intensifier camera. It was shown that the streamers radiate relatively short wavelength light (${\sim}340nm$) while the leaders radiate a plenty of long wave length light ($400{\sim}800nm$). It was also known that the streamers propagate very fast with a velocity of $6{\times}l0^7cm/sec$ but the leaders have average velocity of $5{\times}10^6cm/sec$ and they proceed gradually fast by step-wise development.

• Journal of Digital Convergence
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• v.18 no.5
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• pp.157-167
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• 2020

This study aims to examine the effect of leader' behavioral integrity on subordinate's change-oriented OCB via their team commitment along with the moderating effect of LMX. For this, 395 soldiers from military organizations where external factors were relatively well controlled besides their personal characteristics were selected and surveyed using hierarchical regression methods. First, the results showed that leader' behavioral integrity was positively related to subordinate's change-oriented OCB. Second, the positive relationship between leader' behavioral integrity and subordinate's change-oriented OCB was mediated by team commitment. Third, the aforementioned mediated relationship was moderated by LMX. Although this study targeted members of military organizations with more restrictions on behavior than private organizations, such as corporations, it could be meaningful in that it confirmed that the leader's behavioral integrity lead to subordinate's voluntary behavior of change-oriented OCB, which should be followed by efforts to make it more general by comparing a variety of public and business organizations.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.11
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• pp.5497-5507
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• 2013

The purpose of this study was to investigate the effects of dark side personality traits on self-other rating agreement in leader effectiveness. Data were collected from 80 team leaders and their peers in college. Peers who conducted a team project were asked to assess performance of their team leaders on leader effectiveness, task performance, and contextual performance. The leaders were also asked to self-rate their performance on the same measures. Results indicated that there was disagreement of perceptions about personality traits between leader's self-ratings and the rating of others. First, leaders considered their own Bold, Diligent behaviors as positive influence on their leadership-related criteria, whereas peers of these leaders provided negative ratings. Also, leaders viewed Leisurely and Cautious characteristics as unrelated or negative to performance, whereas peers perceiveed these personality traits as positive to performance. Suggestions for future research were provided based on the findings.

• Journal of Preventive Medicine and Public Health
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• v.17 no.1
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• pp.85-93
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• 1984

In order to develop some indicies for the evaluation of village health worker's activities and to find out personal characteristics and other factors that affect the activities, an interview survey was conducted to thirty seven village health workers (VHW) in Sunwon, Naega and Bulun townships in Kangwha county, where the Community Health Project of Yonsei University, College of Medicine, has been implemented for the past ten years. In addition, daily activity records of the VHW's were also analyzed. The results are summarized below: First, meeting attendance rates, number of regular family visits, number of antenatal care visits and number of family planning visits were identified as the most meaningful criterion for the evaluation of the village health worker's activities. Second, personal factors that significantly affect the village health worker's activities were identified as age, educational background, living with in-laws, religion, presence of preschool child in the family, holding leader's position of village woman's association concurrently, and duration serving as a VHW. The more aged and the more educated VHWs were the more effective. Those VHWs who were living with in-laws, without preschool child in the family, holding the leader's position of the village woman's association, and the longer service duration were the more effective. Other factors that affect the VHW's activities were the number of households in the target village and the number of natural villages in the target villages. It showed that the smaller the size of number of households and natural villages, the higher the degrees of the effectiveness of the VHW.