• Journal of Korean Institute of Industrial Engineers
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• v.32 no.4
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• pp.347-357
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• 2006

Six sigma activities in an information and communication technology company in Korea are introduced. Korea Telecom(KT) was a public company for a long time and became a private enterprise not long ago. Although this company adopted many innovation programs, they were not effective because of the company's characteristics : long-time government-owned and information service industry. This paper describes the reason why KT introduced six sigma, some implementation strategy, and key factors to successfully deploy it. This paper is expected to be helpful to public or service industry in which it is very difficult to implement innovation activities.

• Journal of Astronomy and Space Sciences
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• v.23 no.2
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• pp.161-166
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• 2006

In this paper, we describe the RLG current stabilizer circuit for attitude control in the satellite. The RLG makes use of the Sagnac effect within a resonant of a HeNe laser. The difference between two discharge currents causes one of the gyro bias errors. The theoretical background and current stabilizer are introduced. It is verified that the circuit designed is applicable to the test of input voltage and temperature.

• 한국전산유체공학회:학술대회논문집
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• 2006.05a
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• pp.320-323
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• 2006

A fluid transient analysis on the Koreasat 1 & 2 pipeline system is conducted through numerical parametric studies in which unsteady friction results are compared with quasi-steady friction results and show relatively accurate prediction of the response curve with the unsteady friction. The code developed and used in this analysis has finished verification through comparing with the original Zielke model, the full and recursive convolution model and quasi-steady model as a reference. The unsteady friction is calculated by the recursive convolution Zielke model in which a complete evolution history of velocity field is no longer required so that it makes the fluid transient analysis on the complicated system possible. The results show that the application of quasi-steady friction to model cannot predict the entire response curve properly except the first peak amplitude but application of unsteady friction to model can predict reasonably he response curve, therefore it is to know the characteristics of the propulsion system.

• Journal of the Korea Society of Computer and Information
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• v.7 no.2
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• pp.155-160
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• 2002

The personnel and salary management business among computation by computer of a general enterprise is very important. The attendance-absence of our office and in and out of office work for employees in business is very important data element. Because of computation by computer system introduction in a general small and medium enterprise is very expensive, until now it is managed simply by handwork data in the attendance book. On the other hand, to solve the cost problem I designed and implemented a diligence and indolence communication management system for using P.O.P Terminal.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.557-560
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• 2015

PMO(Project Management Office)는 프로젝트의 수행을 일관성 있게 관리하고, 성공적인 완료를 위하여 지원, 감독, 통제 등의 제반 활동을 수행하는 조직이다. PMO의 도입으로 인한 프로젝트 성과 향상에 대한 연구는 이미 해외에서는 여러 차례 보고 되었고, 최근 정부에서도 전자정부법을 개정하여 공공정보화 사업에 대한 안정적인 PMO 제도 정착을 위해 노력하고 있다. 본 논문은 이러한 배경을 바탕으로 국내 공공정보화 프로젝트 지원에 필요한 PMO 8개 카테고리, 33개 주요 기능을 2000년 이전과 2000년 이후로 구분하여 각 기능에 대한 증가율을 비교, 분석하였다. 이러한 분석 결과를 바탕으로 향후 더 효과적인 PMO 제도의 안착을 기대한다.

• Korean Journal of Community Nutrition
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• v.9 no.2
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• pp.233-240
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• 2004

This study was design to grope the suggestions leading synergic effects by bridging the gap between headquarters and branch office, and so to identify the infra-system of contract foodservice management company (CFMC) necessary for operating any kind of branch office including school, hospital and business and industry (B＆I). Among 8 categories consisted of infra-system in CFMC, 'C8. Evaluation ＆ analysis for branch office's operation' was the most important category in the headquarter's viewpoint, while 'C3. Sanitation management system' was the most important category in branch office's viewpoint. In support and application, 'C3. Sanitation management system' was the highest category in both headquarters and branch offices including school, hospital and B＆I. As a result of analysis on gap between main and branch office in importance, support and application in 8 categories, the efforts of communication and community of perception for infrastructure were needed, because 'C4. Education ＆ training for human resource management (HRM) system' and 'C8. Evaluation ＆ analysis for branch office's operation' in importance, 'C2. Menu management system', 'C4. Education ＆ training for HRM system', 'C6. Facility ＆ utility support system' and 'C8. Evaluation ＆ analysis for branch office's operation' in support had a gap. Correlation analysis to grasp the relation between importance of infra-system and headquarters' support or branch office's application showed that headquarters's importance and support were correlated positively in 'C3. Sanitation management system', 'C6. Facility ＆ utility support system', 'C7. Customer satisfaction management system' and 'C8. Evaluation ＆ analysis for branch office's operation' and branch office's importance and application were correlated positively in 'C1. Procurement ＆ food processing system', 'C5. Management Information system', 'C7. Customer satisfaction management system' and 'C8. Evaluation ＆ analysis for branch office's operation'. Lastly, 'C6. Facility ＆ utility support system' in the branch office of school and hospital and 'C2. Menu management system' in the branch office of B＆I were high in importance, low in support and application, therefore Intensive support for these categories was needed. In conclusion, continuous check and improvement for categories, which were identified as an urgent problems to be solved in this study, among infra-structure qualifying for CFMC, would enable contract foodservice industry that has grown quantitatively till now to grow qualitatively.

• Proceedings of the IEEK Conference
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• 2002.06a
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• pp.157-160
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• 2002

For a company operating lots of vehicle, such as taxi companies or delivery company, a system telling the position of each vehicle is essential. Conventional methods are based on personal communication between a operator in head-office and driver at the car. Since driver cannot respond to the communication while he drives or when lie is out of car. the communication often fails. So, a system identifying and reporting the vehicle position offers groat help to those kind of company.

• Proceedings of the Korea Society of Design Studies Conference
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• 2005.05a
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• pp.322-323
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• 2005

Currently, there are varieties of communication media options, such as E-mail, Instant Message, SMS and Computer discussion group. These genres keep expanding with the integration of computers and wireless technologies and even more it allows people to communicate at different time without travelling distances, However, it is mostly impossible the one communication media satisfies the same task demands under different situations. And online communication media can not reach the actual purpose of traditional communication in keeping the interpersonal relationship and richness of communication by sharing time and physical space. Therefore, we researched and examined on the current state of appropriateness communication style in different given situation as affected by requirement and its characteristics. With the result in research and survey, we suggested new communication style mediated by everyday thing through the case study.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.2 no.1 s.2
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• pp.93-100
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• 2003

In this farer, An ADSRC(Advanced Dedicated Short Range Communication) packet communication system developed by ETRI is introduced. The ADSRC system has been developed to provide high-speed, short-range wireless racket communication in roadside environment for mobile office services. The requirements of the ADSRC system for mobile office services and the system design specification to meet them with regard to mobile of nce environment are discussed. The ADSRC packet communication systems consist of the MAC(Medium Access Control) Processor block the OFDM() modem block and the RF block. The MAC processor block handles medium access control. The OFDM modem transmits data packets at up to 24Mbps adaptively and recovers the data from RF block. The ADSRC packet communication system architecture is described.

• Proceedings of the KIPE Conference
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• 1997.07a
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• pp.211-215
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• 1997

Localized communication networks for office automation, security monitoring, environmental management of buildings, computer communications, and other applications enjoy every increasing demand. This paper proposes a direct sequence spread spectrum communication system for use in power line data transmission. Advantages of power distribution circuits include reasonably universal coverage and easy access vis a standard wall plug. Disadvantages include limited communication bandwidth, relatively high noise levels, and varying levels of impedance, noise, and attenuation. Spread spectrum signalling provides immunity to narrow-band signal impairments and multiplexing capability. Our prototype power line communication module supports completely physical and data link layers based on the international standard ISO 10368 for reliable high-speed power line communication system. Moreover it provides useful functions to compose a plant monitoring and control system. All the circuits of the communication module are included in one compact circuit. Thus a functional communication system for the power line plant monitoring and control is implemented.