• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.7
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• pp.1713-1720
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• 2014

RFID technology has evolved from basic operation like the acquisition of tag IDs into a more complicated operation such as the simultaneous acquisition of tag IDs and their positions and recently, is raising the possibility of obtaining additional informations, which include their velocities, directions and distances. In this paper, we present a RFID system that can fullfil aforementioned advanced functions. In the proposed system, a tag transmits a sequence of FMCW pulses modulated by ID signals and a reader separates the tag signals in azimuth direction using an array antenna, followed by the FMCW demodulation from which distances, velocities as well as the tag IDs are extracted. We propose a receiver structure of the reader and theoretically analyze its operability. Moreover, its performance is examined by simulation.

• Journal of the Korean Society of Food Science and Nutrition
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• v.36 no.4
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• pp.488-498
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• 2007

The purposes of this study were to: a) provide evidences concerning the effects of emotional leadership b) examine the impacts of emotional leadership on employee-related variables, 'job satisfaction', 'organizational commitment', 'organizational performance' and 'turnover intention', and c) identify a conceptual framework underlying emotional leadership. A survey was conducted from August 23 to November 3, 2005 to collect data from mid-level managers in food service company headquarters (N=219). Statistical analyses were completed using SPSS Win (12.0) for descriptive, reliability, factor and correlation analyses and AMOS (5.0) for confirmatory factor analysis and structural equation modeling. The main results of this study were as follows. First, the managers gave the highest point to their leaders in the emotional leadership competence 'organizational awareness : reading the currents, decision networks, and politics at the organizational level' and gave the lowest point in the emotional leadership competence 'influence: wielding effective tactics for persuasion'. Second, the means of job satisfaction was above the midpoint (3 points). Employees' job satisfaction with 'coworkers' was relatively high. However, the extents of satisfaction with 'payroll' 'promotion', and 'work environment' were relatively low. Third, the organizational commitment was above the midpoint (3 points). In the organizational commitment, 'loyalty' factor was higher than 'commitment' factor. Fourth, the means of organizational performance was above the midpoint. The highest organizational performance variable was 'internal efficiency; trying to reduce cost' and the lowest organizational performance variable was 'internal fairness ; equitable treatment and all are treated with respect with no regard to status and grade'. Fifth, most respondents intended on 'thinking of quitting ; towards turnover process'. Sixth, the test of hypothesis using structural equation modeling found that emotional leadership produced p[Isitive effects on job attitude and job performance. Emotional leadership enhanced job satisfaction and organizational commitment, and in turn, employees' attitude positive effects on organizational performance; emotional leadership also had a direct impact on organizational performance

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.46 no.5
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• pp.71-78
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• 2009

In RFID system, the communicated data can be easily eavesdropped and tampered with by an attacker because the communication between the reader and the tag is performed in an insecure channel. Therefore, authentication is an important role in RFID applications for providing security and privacy. In 2006, Lee, Asano and Kim proposed an RFID mutual authentication protocol (the LAK protocol) which utilizes a hash function and synchronized secret information. However, Cao and Shen showed that the LAK protocol is vulnerable to replay attack, and therefore an adversary can impersonate the tag. This paper proposes a new simple two-round RFID mutual authentication (TRMA) protocol based on secure one-way hash function. As a result, the proposed TRMA protocol not only can prevent various attacks and but also provides communication efficiency since they mutually authenticate by performing two-round between RFID tag and RFID reader.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.24 no.2
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• pp.31-47
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• 2013

The purpose of this study is to develop a measurement tool for self-image of the teacher librarian by semantic differential meaning scale and to analyse the correlation between their self-image and individual characteristics. This study suggests that the teacher librarians have regarded themselves as friendly, planned, sensitive and cooperative persons as well as persons with discernment. On the other hand, there are some negative self-images such as partial, poor and uninfluential persons plus disregarder and a reserved persons. The educational career of teacher librarians' background has influence on evaluation area of the self-image. This result shows that senior teacher librarians' role performance as a adviser or a leader is very important. So mediator role of KLA and KSLA has to be reinforced to beat the exchange and collaboration between the senior and the junior teacher librarians. It is necessary to appoint the teacher librarians obligatorily in oder to feel their professional security and sense of achievement, also to appreciate expertise of them through role clarification among the human resources of the school library.

• 대한공업교육학회지
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• v.37 no.2
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• pp.1-19
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• 2012

In this study, to figure out the demands for learning, a survey was conducted on learning organization agents participating in learning organization project supported by public fund, through measuring their awareness level of the role and tasks drawn from the precedent study. This questionnaire was developed with four roles and twenty competencies drawn from the precedent study. After conducting the survey on over 200 small and medium corporations participated in learning organization project, the data was analyzed about the role and competency from 123 answer sheets collected. The results were as following First, the awareness of role importance was higher(4.36) than present level(3.73), and was important in order of innovator, operator, spreader, promoter. Second, in competitive importance of learning organization agents, the role of spreader was high, that of promoter was low. Third, in awareness level of learning organization agents, the demand level was generally high(4.1), but acquired level was generally low, so there was a wide gap between the demand level and acquired level. Forth, From the analysis result of those data about work competency of learning organization agents, learning organization promoter and learning leader, KMS operator ability and outcome were come out to be necessary, and next administrative ability about organization changes were come out to be necessary.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.05a
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• pp.537-544
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• 2005

정보화 환경에 적합한 인재의 Personality 유형 분류 및 주요 특징 분석을 통하여 이에 대한 모델을 제시하는 것이 본 연구의 목적이다. 기존 심리검사 및 정보화 성격 관련 연구의 한계점을 제시하고 조직 내 각 계층의 업무 수행에 필요한 성격 및 주요 성공 역할을 도출하여 이를 정보화 환경에 맞게 정리함으로써 정보화 성격 유형을 분류하고자 한다. 이러한 성격 유형들은 세부적으로 IT 창조자, Communicator, IT 리더, 정보 공유자, IT 감독자, 비전 제시자, 동기 부여자 등 7가지 수평적 유형으로 분류되며, 이러한 유형들의 분석을 위하여 성격 검사 연구인 Big 5 Model의 분석 방법 및 설문 문항을 적용하고자 한다. 이러한 정보화 성격 분류 및 각 유형에 대한 특성 제시는 개인의 정보화 성향 및 잠재성격을 파악하고 이를 개인적, 조직적으로 더욱 발전시킬 수 있는 방향을 제시할 수 있다.

• Journal of Agricultural Extension & Community Development
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• v.12 no.1
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• pp.1-15
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• 2005

The objectives of this study were to analyze characteristics and role performances of rural leaders and to verify leadership difficulties in organizing rural society. The data were collected from 273 rural leaders selected by stratified random sampling, and the SPSSWIN 10 was used for analyzing data. The major findings of this study were as follows; 1) Leadership role performances of rural leaders were higher than the average scores of non-leaders. 2) Men's leadership role performances were higher than women's except in facilitator role. 3) Leaders in city/county level were more successful in doing leadership performances than community level leaders. 4) Rural leaders were seeking other leaders for discussing problems in leadership. 5) The most difficulties of rural leaders were unconcerns and disinterest of rural people for community development.

• 재활복지
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• v.22 no.4
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• pp.23-41
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• 2018

Non-Government Organizations (NGOs) for rehabilitation of people with disabilities in India have been carrying out of an important strategy in the long-term protection of their rights. However, it is embarrassing to aware that many number of NGOs remain starved for resources under very unsatisfactory conditions. CBR programs could fill a vacuum and satisfies urgent needs and strategies of NGOs' activities. The purposes of this article are to present rehabilitation strategies toward social change and fulfillment of human rights by NGOs, have played a major role in disability and disability services in India, and to challenge CBR program as awareness raising and community developing. This would be accomplished by reviewing several articles conducted regarding ways that NGOs can become more effective source in long-term rehabilitation service with CBR program in India. Some suggestions are revealed.

• Management & Information Systems Review
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• v.31 no.2
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• pp.1-20
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• 2012

The purpose of this study was to investigate the influence of leadership types and self-efficacy, job satisfaction on organizational performance. The hypotheses were suggested and data analyses were performed to verify these hypotheses. Data gathering were performed by self-administered questionnaires on the samples of 423 mechanical fields employees in Busan & kyongnam. The results of structural model exhibit that transformational leadership, transactional leadership was positively related to elf-efficacy. And it was also found that self-efficacy, job satisfaction was positively related to organizational performance. Expecially, it showed self-efficacy, job satisfaction as a mediator on the relationships between the leadership types and organizational performance.

• Journal of the Korean Society for Railway
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• v.20 no.5
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• pp.602-611
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• 2017

In railway systems, the exchange of information between running trains and wayside equipment is a very important role in various applications such as position detection and train control. Track circuits have been used as the medium for information transmission between trains and wayside. However, track circuits must be installed continuously along the track on the ground, resulting in an inevitable increase in installation and maintenance costs. One of the most promising solutions to reduce these costs is to mix continuous information transmission (via wireless communication) and discontinuous information transmission (via transponder). In this study, we designed antennas of railway high-speed transponder readers and tags for wireless power transmission, which can be used to transmit information from ground to high-speed trains with a maximum speed of 400km/h. We also verified system performance through computational simulation and prototyping.