• 전기학회논문지P
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• 제58권4호
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• pp.377-384
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• 2009

In this paper, leakage current sensing module of SoC(System on Chip)type and real time monitoring system under consideration of electromagnetic interface in power trunk line are developed. The first, leakage current sensing module of SoC type under consideration of electromagnetic interface is developed, and the developed sensing module of SoC type is composed of leakage sensing part, power supply part, interface part, communication part, AD(Alternating current to Direct current)convert part and amplification part. And also the electromagnetic compatibility is evaluated by conduction and radiation of EMI(Electromagnetic Interference) for developed sensing module. The developed system can have confidence, stability and do energy saving under mixed electric circumstance of the low voltage communication device and high voltage equipment. The second, the real time remote monitoring system is developed using designed wire and wireless communication module with leakage current sensing module of SoC type. The developed real time remote monitoring system can monitor sensing state, occurrence state of leakage current and alarm for each step etc.. And the device configuration, PCB layout for leakage current sensing module of system on chip type and the experiment configuration in consideration of EMI are presented. Also the measurement results of conduction and radiation for EMI are presented.

• 동아시아식생활학회지
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• 제23권6호
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• pp.862-870
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• 2013

This study examines the effect of communication type of food service employees on the self-efficiency and organizational commitment. To accomplish the purpose of the study, a survey was conducted to employees of food service companies located in Seoul, from August 5, 2013 to August 25, 2013 as a method of empirical study. The results of this study was analyzed using the SPSS WIN 12.0 and statistical reliability analysis, factor analysis, frequency analysis, correlation analysis and multiple regression analysis were conducted for hypothesis verification. The analysis results of this study are as follows. First, the R-square of regression result for 'communication type will have a positive effect on self-efficiency' was .220. Also, it was found that factors of consideration (Beta=.286, t=5.622), instruction (Beta=.303, t=5.970) and business (Beta=.214, t=4.217) had positive effects on self-efficiency. Values for factors of consideration and instruction were higher than business. Second, the R-square of regression result for 'communication type will have a positive effect on organizational commitment' was .429. Also, it was found that factors of consideration (Beta=.453, t=10.428), instruction (Beta=.380, t=8.749) and business (Beta=.282, t=6.477) had positive effects on organizational commitment. Values for factors of instruction and business were high but value of consideration factor turned out the highest. Third, the R-square of regression result for 'self-efficiency will have a positive effect on organizational commitment' was .334. Also, it was found that out of the factors of positivity (Beta=.369, t=8.423), confidence (Beta=.415, t=8.833) and negativity (Beta=-.072, t=-1.536), positivity and confidence had positive effects on organization commitment, and only positivity and confidence showed high values in organization commitment. Upon analyzing the effect of factors of self-efficiency (positivity, confidence, negativity) on organizational commitment, it was found that positivity and confidence showed high relevance but the negativity factor did not have any correlation.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1990년도 춘계공동학술대회논문집; 한국과학기술원; 28 Apr. 1990
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• pp.365-373
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• 1990

The relationships between leader-subordinate interpersonal communication and performance were examined in conjuction with leadership for small project teams of six research institutes funded by Korean Government. The official communication was more positively related to consideration than initiating structure of leader behavior. The non-official communication was positively related to consideration but not significantly related to initiating structure. Each dimension of the performance was positively related to the official and non-official communication for total sample and related differently to the communications according to leadership types for given leadership style.

• 한국경영과학회지
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• 제17권1호
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• pp.135-145
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• 1992

The relationships among leadershipm leader-subordinate interpersonal communication and outcomes in research teams were investigated for six research institutes sponsored by the Korean Government, Consideration and initiating structure of leader behavior were used as leadership dimensions. Subordinate satisfaction with supervision and with work, and project success were considered as outcomes in research team. Leader-subordinate interpersonal communication was positively related to both of consideration and initiating structure of leader behavior. Outcomes in a research team were differently related to the communication according to leadership types. Finally, several theoretical and managerial implications are discussed.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.270-275
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• 2022

Examining whether the relationship between proprietary information cost and management's disclosure decision is also valid for domestic companies is expected to provide meaningful implications for investors and regulatory authorities. However, there are no domestic studies related to proprietary information costs so far. This study examines whether managers tend to lower the disclosure level at their discretion in consideration of proprietary information costs. This study used the measurement quality of disclosure to examine whether managers tend to lower the disclosure level at their discretion in consideration of proprietary information costs. As a result of empirical analysis, it was confirmed that there is a negative relationship between proprietary information cost and the quality of disclosure. This suggests that management tends to make disclosure decisions in consideration of not only the benefits of disclosure but also proprietary information costs resulting from disclosure in order to maximize corporate value. These findings are expected to have significant implications for investors and related policy authorities.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1991년도 춘계공동학술대회 발표논문 및 초록집; 전북대학교, 전주; 26-27 Apr. 1991
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• pp.445-454
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• 1991

The relationships among leadership, leader-subordinate interpersonal communication and outcomes in research teams were investigated for six research institutes sponsored by the Korean Government. consideration and initiating structure of leader behavior were used as leadership dimensions. Subordinate satisfaction with supervision and with work, and project success were considered as outcomes in a research team. Leader-subordinate interpersonal communication was positively related to both of consideration and inititing structure of leader behavior. Outcomes in a research team were differently related to leader-subordinate communication according to leadership types.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 춘계종합학술대회
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• pp.415-419
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• 2002

21세기 남북한 교류·협력은 정보기술, 정보산업 위주로 추진함으로써, 남북한 통일은 앞당길 수 있을 것이다. 이를 위해서는 남북한 및 한반도 지역을 종합적으로 연결하는 정보통신 네트워크의 구성이 필요하다. 미래의 통일을 대비하기 위해 북한지역의 정보통신 인프라 구축은 위한 방안을 대내외적 여건에 대한 객관적인 면과 전망에 근거하여 실현 가능한 통신망 구축 전략을 제시하였다. 따라서 북한지역의 통신망 구축을 위해서는 다원성, 경제성, 중계성 등을 고려하여 망을 구축하여야 하며, 향후 통일비용을 최소화하는 관점에서 검토되어야 하고, 그에 따른 망의 구성, 구축방안을 기술하였다.

• 한국전자파학회논문지
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• 제20권9호
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• pp.823-828
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• 2009

열쇠 관리용 철재 캐비닛 안에 장착되는 UHF 대역의 열쇠고리형 소형 태그 안테나를 설계 제작하였다. 열쇠 고리형 태그 안테나는 인접한 태그 안테나, 열쇠고리의 금속 부분, 그리고 캐비닛 등과의 상호 간섭 작용을 고려하여 소형으로($66\;mm{\times}6\;mm$) 제작하였다. 제작된 태그 안테나는 T-matching 방법을 사용하여 정합하였고, 미엔더(Meander) 형태를 이용하여 크기를 줄여서 유전체(FR-4) 기판을 사용하여 제작하였다. 먼저 인접한 태그 안테나들과의 상호 간섭을 감안하여 태그 안테나를 설계하였고, 캐비닛의 철재 근처에 장착되는 태그 안테나용으로 또 다른 설계를 제안하였다. 인접한 태그 안테나들의 개수를 변화시켜가며 태그 안테나의 특성과 인식 거리에 미치는 영향을 분석하고 측정하였다. 그 결과 캐비닛에 장착되는 총 360개의 태그 안테나를 모두 인식할 수 있었다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 추계학술대회
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• pp.135-136
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• 2023

본 연구는 금속체 표면파 통신을 이용한 선내 통신 네트워크 구축을 위한 실증 결과이며, 이에 대한 선내 적용방안에 대한 고찰이다. 지난 3년간 5척의 선박을 대상으로 금속체 표면파 통신에 대한 적용 가능성을 확인하였으며, 소형 선박부터 중형선박까지 선내 밀폐 구역에 대한 표면파 통신의 실증을 통해 그 성능을 입증하였다. 통신방식은 IEEE 802.11 기반의 Wi-Fi 통신을 이용하여 무선신호를 표면파롤 전송하는 방식으로 진행하였으며, AP 기반의 데이터를 전송하고 AP - AP의 Point to Point 방식으로 전송속도를 측정하였으며, 표면파 통신이 도달되지 않은 구간은 중계기 AP를 추가하여 전송거리를 연장하는 방안으로 이용하였다. 총 5척의 선박을 통해 무선통신이 불가능한 구역에서 5~100Mbps의 전송속도를 도출함에 따라 선내 Back Bone network를 표면파 기반으로 이용하여 선내 중량 감소, 통신 케이블 구축에 따른 비용 절감이 가능할 것으로 사료된다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.1129-1132
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• 2002

In this paper we analyze a class of switched mode DC-DC converters and derive some topological conditions for the circuit to work as DC-DC converter, in particular, buck, booster, and buch/booster cponverters.