• Journal of the Korean Society of Systems Engineering
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• v.11 no.1
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• pp.73-79
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• 2015

This paper describes boundary analysis for modeling Aircraft Carrier Sortie Generation System(CVSGS). An aircraft carrier, as a super system, is a warship going into battle by operating a number of aircraft on deck and it should be lay down a definition about aviation operations interacting between aircraft carrier and carrier air wing in small deck area. For this reason this paper models common aviation support system for generating sortie basic unit of carrier aviation operations unlike to general warship and defines boundaries between this system and aircraft carrier and carrier air wing. This paper analysis activities of aircraft carrier and embarked carrier air wing in carrier aviation operations, and analysis and defines boundaries Aircraft Carrier Sortie Generation System(CVSGS) to perform core functions in interacting between aircraft carrier and embarked carrier air wing.

• Journal of Pharmaceutical Investigation
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• v.14 no.1
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• pp.1-10
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• 1984

Effects of water soluble carrier on the dissolution characteristics of indomethacin coprecipitates were investigated. Water soluble carriers used were polyvinylpyrrolidone, dextrose, mannitol and their mixtures of various ratios. The dissolution rates of indomethacin from coprecipitate with ratios of drug-to-carrier, kinds of carrier and ratios of carriers were as follows: 1. The dissolution rates increased proportionally to the ratios of carrier in the case of both single and combined carrier, and the dissolution rate of coprecipitate with the combined carrier was more rapid than that with single carrier. 2. The combined carrier of PVP-dextrose (1 : 2) in the case of the coprecipitate of drug-to carrier (1 : 1) and PVP-dextrose (4 : 1) in the case of the coprecipitate of drug-to carrier (1 : 3) yield the most rapid dissolution rate. 3. The dissolution rate of indomethacin was the most markedly enhanced in the case of the combined carrier of PVP and dextrose.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.7
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• pp.2891-2903
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• 2020

Phase-generated carrier (PGC) demodulation algorithm is the main demodulation methods in Fiber-optic interferometric sensors (FOISs). The conventional PGC demodulation algorithms are influenced by the carrier phase delay between the interference signal and the carrier signal. In this paper, an automatic carrier phase delay synchronization (CPDS) algorithm based on orthogonal phase-locked technique is proposed. The proposed algorithm can calculate the carrier phase delay value. Then the carrier phase delay can be compensated by adjusting the initial phase of the fundamental carrier and the second-harmonic carrier. The simulation results demonstrate the influence of the carrier phase delay on the demodulation performance. PGC-Arctan demodulation system based on CPDS algorithm is implemented on SoC. The experimental results show that the proposed algorithm is able to obtain and eliminate the carrier phase delay. In comparison to the conventional demodulation algorithm, the signal-to-noise and distortion ratio (SINAD) of the proposed algorithm increases 55.99dB.

• Fashion & Textile Research Journal
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• v.5 no.5
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• pp.545-549
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• 2003

Dyeing properties such as migration of disperse dye and color fastness of 4 types of the carrier[Carrier-I(methyl napthalene). Carrier-II(chloro benzene). Carrier-III(aromatic ether) and Carrier-IV(o-phenyl phenol)] were evaluated for the study. For the results, the optimum dyeing time and concentration of the carrier was 30min at $110^{\circ}C$ and 2g/l, respectively. The redyeing ratio of the fabric samples treated with Carrier-II and III was higher than that treated with Carrier-I and IV, thus, if was conclude that the redyeing ratio of the samples treated with Carrier-II and III was excellent. The light fastness of the samples treated with Carrier-III and IV was higher than that of Carrier-I and II in order of 2-4 grades. However, there were little changes in terms of washing and sublimation and rubbing fastness for the samples.

• Journal of the Korean Society of Systems Engineering
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• v.11 no.1
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• pp.33-39
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• 2015

This paper describes a development of aircraft carrier aviation support system architecture using DoDAF. The aircraft carrier, a warship performing a role of mobile sea air base in offensive and defense mission, is super system that is comprised of carrier itself and carrier-based airwing. Performing critical role in step with aviation operations in carrier-airwing interactions, the aviation support system of aircraft carrier is also system of systems. It requires a complex and integrated approach based on systems engineering in establishing concept of this complex systems. In this view, this study establishes an operational scenario and derives operational requirements by identifying aviation operations environment on deck of aircraft carrier. The study presents the operational architecture of the carrier aviation support system by using DoDAF and CASE tool CORE.

• 전자공학회논문지 IE
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• v.45 no.4
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• pp.7-10
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• 2008

In this work investigates hot carrier stress on the RF power of SOI MOSFET using load-pull measurement. We found that the RF power characteristics are affected by the hot carrier stress, and the DC performance of SOI MOSFET is clearly degraded after hot carrier stress at constant voltage measurement. And these experimental observations can be explained by the change of DC performance degradation coefficient under hot carrier stress.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.69
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• pp.327-348
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• 2016

Under the Korean legal system, as an actual carrier is not the contractual party to the contract for carriage of goods by sea, it has been tortiously liable for the damage to, or loss of cargo, should there be the negligence by its part. However, the Rotterdam Rules introduces a revolutionary liability regime for the actual carrier. According to the Rotterdam Rules, the liability of the actual carrier is same with that of a contractual carrier with the result that a shipper is entitled to bring the direct action to the actual carrier, as well as the contractual carrier on the same basis. Nevertheless, it is expected to take long time for the new approach in respect of actual carrier's liability to be confirmed by many countries, and furthermore most of shipping countries including Korea still adopt the Hague-Vis by Rules where the shipper is not allowed to bring the direct action to the actual carrier. This study reviews on whether or not the alteration of actual carrier's liability based on Rotterdam Rules would be reasonable, considering the current Korean legal system. Furthermore, this study, whilst recognizing that the overall introduction of the new liability regime is somewhat premature, suggests the imposition of contractual liability to the actual carrier from a long-term perspective. Having in mind that the article 809 of the Korean Commercial Act allows the shipper to bring the direct action to the shipowner only in the case that a time charterer is the contractual carrier, this study explores a method to apply the contractual liability to the actual carrier in the case that a slot charterer or freight forwarder is the contractual carrier, in order to establish the uniform liability system.

• Special Issue of the Society of Naval Architects of Korea
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• 2013.12a
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• pp.81-84
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• 2013

일반적인 Bulk carrier는 Single deck, Double bottom, Hopper side tank, Top side tank와 함께 Single side skin 또는 Double side skin으로 구성되어 Single hull bulk carrier 또는 Double hull bulk carrier라 불린다. 본 논문의 연구선박인 Double hull bulk carrier는 CSR에서 규정짓고 있는 Double hull bulk carrier의 특징 중 Hopper side tank가 없기에 일반적인 Double hull bulk carrier와는 다른 구조를 가진다. 구조적 특징으로는 Inner bottom과 Inner hull 연결부위에 응력 집중 발생, Side shell의 Shear에 대해 구조적 안전성, Double hull에 대한 CSR for bulk carrier의 Rule적용 여부에 대한 판단 등이 있다. 따라서 본 연구에서는 Double hull bulk carrier의 구조적 특징과 구조해석을 통한 응력 집중 부위의 평가 및 Fatigue analysis을 통한 피로수명을 계산하여 이를 통해 구조의 안전성을 살펴보고자 한다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.3
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• pp.378-390
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• 2001

In this paper, it is analyzed that the error performance of a Multi-Carrier DS-CDMA system in a single cell with multipath Rician fading and multiple access interference (MAI) and the error performance of the system is compared with that of a Sing1e-Carrier DS-CDMA system. Moreover, the convolutional coding techniques with code rate of 1/2, 1/3, and 1/4 are adopted in order to improve the error performance degraded by the multipath fading and MAI and performance improvement through the coding techniques is analyzed. As a result, it is shown that the number of users in each system can be determined by the number of branches of the rake receiver in a Single-Carrier DS-CDMA system and the number of carriers in a Multi-Carrier DS-CDMA system. Furthermore, the convolutional coding should be chosen with considering the trade-off between coding gain and a power limitation in a Multi-Carrier DS-CDMA system. In case of increasing the number of carriers, the processing gain is decreased but the error performance is improved through the effect of frequency diversity and the system can be possibility implemented due to the low chip rate.

• Textile Coloration and Finishing
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• v.2 no.4
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• pp.231-236
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• 1990

The diffusion coefficient of C.I. Disperse Red 4 in the dyeing of carrier-pretreated poly (ethylene terephthalate) film was Investigated by Sekido's film-rolled method. From the result it was shown that the diffusion coefficient increases exponentially with the content-ration of carrier in the film, and, for the films containing same concentration of carrier, the carrier effect was enhanced with the molar volume of the carriers. The greater carrier effect was accompanied by the decrease in diffusion activation energy and entropy, which shows that the carrier with larger molar volume plasticizes PET film to more extent.