• Journal of the Society of Naval Architects of Korea
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• v.51 no.3
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• pp.220-230
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• 2014

Typical technical issues associated with Floating LNG (FLNG: FSRU and LNG FPSO) design are categorized in terms of global performance evaluation. Although many proven technologies developed through LNG carrier and oil FPSO projects are available for FLNG design, we are still faced with several technical challenges to clear for successful FLNG projects. In this paper, some of the challenges encountered during development of the floating LNG facility (i.e. LNG FPSO and FSRU) will be reviewed together with their investigated solution. At the same time, research of design improvement including new LNG-related technologies such as combined containment system will be presented to overcome the unrevealed challenges for the FLNG development.

• VENDING MACHINE INDUSTRY
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• no.summer
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• pp.19-29
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• 1999

이제야 희망이 보인다. 그동안 자판산업계의 고질적인 문제점이자 대표적인 특소세 적용의 부당 케이스로 논란이 일었던 스티커자판기 품목에 대한 특소세 적용이 연이은 행정심판 승소로 꺼져 가는 시장에 있어 새로운 희망의 빛을 던지고 있다. 지난 6월 2일 부산지방법원 행정1부 (재판장 진병춘 부장판사)는 한보전기가 스티커자판기를 고급사진기로 보고 특별소비세 30${\%}$를 부과하는 것은 부당하다며 부산 동래세관을 대상으로 낸 특소세 부과처분 취소 소송에서 원고승소 판결을 내렸다. 이번 승소판결은 특히 지난 4월 21일 삼원사진기기의 서울행정법원 승소판결에 이은 연이은 승소로 스티커자판기에 대한 특소세 제외는 이제 거부할 수 없는 대세적인 흐름을 맞았다는 점에서 큰 중요성을 갖는다. 그동안 산업계는 영업용기기이며 가뜩이나 고가형기계인 스티커자판기 품목에 대한 $30{\%}$의 특소세 적용으로 단기간안에 경쟁력을 잃고 시장이 사양길로 접어드는 어려움을 겪어 왔다. 물론 이번 판결은 피고측의 항소로 인한 고등법원 제판결과를 좀더 지켜봐야 하겠지만 보통 납세자 측이 1건도 아닌, 2건의 판결에서 승소한 상황을 고려할 때 특별한 이변이 없는 한 스티커자판기의 특소세 논란은 번복 없이 막을 내릴 확률이 높다. 애초 가능성이 희박 할 것이라는 주위의 부정적인 시각을 일소시킨 일대 쾌거라 할 수 있는 이번 승소. 그러나 앞으로 최종 승소와 완전한 특소세 철회의 길을 가기 위해서는 아직도 과제가 많다. 특히나 중요한 점은 관련업체들이 적극 연계해서 더욱 큰 결속력을 형성해야 하는 일이다. 금호에서는 이같이 중요한 시점에서 과연 산업계가 어떠한 대응을 준비해야 하고, 향후 시장상황이 어떠한 반전의 계기를 맞아 갈 수 있을 지에 대해 집중진단해 보는 시간을 마련했다.

• Aerospace Engineering and Technology
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• v.12 no.2
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• pp.91-98
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• 2013

Computing environment of space explorer including LEO (Low Earth Orbit), GEO (Geosynchronous Earth Orbit) satellite may be considered as the same category of embedded system on the ground. But with comparison with personal computing environment it is widely accepted that the space computing is outdated and behind of state of the art. Especially file system which is nearly essential item in all ground computing environment including personal computer, workstation and server is rarely used in space explorer till lately. In this paper, a study of ESA PUS (Packet Utilization Standard) and CCSDS (Consultative Committee for Space Data Systems) community's activity, international trend, and applicable technical application for applying file system in oder to use these standards for utilizing the file system to deep space explorer is described.

• International Commerce and Information Review
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• v.10 no.3
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• pp.75-99
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• 2008

In the commercial transaction sellers use various sales strategies to increase profits, and this kind of sales strategies often causes damage to customers, it, moreover, is true that these examples happen in the electronic commercial market much more than in traditional one because of the characteristics if the electronic commerce. That's why people transact one another without face-to-face meeting in the electronic commerce market, so people one likely to fall for a trick to cheat and deceive. It's no doubt that the frequency of crime is higher than in face-to-face market. For that reason Cooling Off System, Consumer Compensation Insurance, Mutual Aid Association and Billing Payment Deposit System are in force the law related electronic commerce to protect customers' rights. In this paper it will be discussed about the periods of Cooling Off System and a received commodity notice of the Billing Payment Deposit System. Regarding these periods seven days for Cooling Off period and three days for a received commodity notice period are stipulated under the law of related electronic commerce to protect customers' rights, But each period has to be differentiated depending on each goods for this period to be reasonable and proper. Therefore in this study it will be focused on these facts and each period will be classified by the goods' purpose of purchase and quality.

• The KIPS Transactions:PartD
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• v.9D no.6
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• pp.1097-1104
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• 2002

Recently, with a drop in memory chip price and rapid development of mass storage memory chip technology, research on client-server Database Management Systems has gained wide attention. This Paper discusses the recovery technique in a page-server OODBMS environment. Although most researchers have studied client-server systems, the recovery technique has been a poor researches. In this paper, client transfers only the completed log records to the server and resolves the problems in the current recovery techniques. In addition, the server manages only the execution of completed log records suggesting a simple recover algorithm, Client uses system concurrency, fully, by acting to abort actions and it suggests a page unit recovery technique to reduce time that is required in the whole database.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.31 no.3
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• pp.95-100
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• 2003

Electronic equipment used in satellites are demanding extremely high reliability, so they should be designed to have immunity for some critical faults by using redundancy component. Generally, Communication satellites are assigned to meet the 15 years mission lifetime, of the analysis about faults must be performed to electronic equipments of satellite. This paper is a summary of the fault tolerance design research of command processor, the improvement of reliability and trade-off study of fault tolerance design result. The reliability prediction value of the satellite component used in this research was taken from Koreasat 3 and Kompsat 1. It is important to perform many trade-off studies for fault tolerance design, especially to choose the most proper fault tolerance method for the specified fault scenario.

• Journal of the Korean Operations Research and Management Science Society
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• v.30 no.1
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• pp.105-128
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• 2005

The Purpose of the current study is to identify the differences between Samsung and Hyundai Group and the causes why the differences occurred. The study focuses on the founders of the two group as a main source of the differences, especially brain preference of the two founders. Two steps were employed to perform the study. Firstly, the two founders' characteristics were analyzed by using archival research. It was implicitly hypothesized that Group founders' characteristics explained the differences of the two Groups. It was found that the founder of Samsung Group, the late president Lee emphasized rationality, analysis, and cause/effect relationship and low risk taking, suggesting that he had left-brain preference. In contrast. the late president Chung, the founder of Hyundai Group, emphasized intuition, wholeness, contextual meaning, and risk taking, showing that he had right-brain preference. Secondly, a comparison between the two groups was performed in terms of business and financial risk in corporate portfolio, and management system. It was found that Hyundai Group was pursuing higher risk than Samsung Group. And it was observed that Samsung Group put more emphasis on formality in decision making and systematic control, and less emphasis on risk taking than Hyundai Group. From the two step research relationship between brian preference and management was reasoned. Research implications and limitations were discussed at the end of the study.

• Proceedings of the KOSOMBE Conference
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• v.1997 no.11
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• pp.420-423
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• 1997

The oxygen saturation of blood can be measured by sensing the difference absorption in optical spectra of Hb and $HbO_2$, as the well known previous study. [1] In this study we developed the noninvasive tissue reflectance oximeter(TRO) using three kinds of LEDs which produce a peak spectral emission at a wavelength of 565, 660 and 940nm. And we tested the unction of the TR oximeter by comparing the output signals measured on normal tissue to measured on low oxygenated tissue. The results showed that oxygen saturation of blood and biological tissue can be monitored from the separation arrangement light source and detector.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.24 no.12A
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• pp.1992-2001
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• 1999

We address the frequency management in the IMT-2000 CDMA system. The system characteristics such as multiple classes of services, multiple kinds of channels with different bandwidths, overlaid cell structure, etc. are examined to make way for the problem definition. The problem is formulated as a constrained optimization model, the objective of which is to consume as narrow bandwidth as possible while satisfying various multimedia demands with required QOSs. A solution algorithm is developed which generates two sets of optimal decisions: 1) which combination of service classes to assign to each cell, 2) which set of frequency channels of varying bandwidths to allocate to each cell. The effectiveness of the proposed deployment policy is demonstrated via computational experiments.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.34 no.1
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• pp.103-109
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• 2006

In this paper, VDS(Vehicle Dynamics Simulator) and ACS(Attitude Control Simulator) are developed and are verified using PILS(Process In-the Loop Simulation) between VDS and ACS. VDS is including the AOCS(Attitude & Orbit Control Subsystem) hardware modeling of geosynchronous satellite and consists of modulation concept. ACS performs the attitude determination using sensor data and generates the attitude control commands. In order to transfer the data between VDS and PCDU(Power Control & Distribution Unit), data acquisition boards were mounted. VDS performance is verified using HILS(Hardware In-the Loop Simulation) between VDS and PCDU.