• Title/Summary/Keyword: CS684

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Production and Biological Activity of Laidlomycin, Anti-MRSA/VRE Antibiotic from Streptomyces sp. CS684

  • Yoo, Jin-Cheol;Kim, Jun-Ho;Ha, Jung-Wan;Park, Nae-Soo;Sohng, Jae-Kyung;Lee, June-Woo;Park, Seong-Chan;Kim, Mi-Sun;Seong, Chi-Nam
    • Journal of Microbiology
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    • v.45 no.1
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    • pp.6-10
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    • 2007
  • Culture broth of a streptomycete isolate, Streptomyces sp. CS684 showed antibacterial activity on methicilin resistant Staphylococcus aureus (MRSA) and vancomycin resistant enterococci (VRE). Among purified substances from the organism, CSU-1, which is active against MRSA and VRE, is a $C_{37}H_{62}O_{12}Na\;(M^+,721.3875)$, and identified as laidlomycin. The anti-MRSA and anti-VRE activity of CSU-1 was stronger than oxacillin and vancomycin. Phylogenetic analysis showed that strain CS684 is very similar to Streptomyces ardus NRRL $2817^T$, whereas the ability of Streptomyces sp. CS684 to produce laidlomycin was shown to be unique.

A Study on the Interrelationship among Service Quality, Customer Satisfaction and Customer Loyalty by Distribution Channel, in the Dehumidifier Goods Industry (제습기산업의 유통경로별 서비스품질이 고객만족 및 고객충성에 미치는 상호관계에 대한 연구)

  • Kim, Kyusik;Ree, Sangbok
    • Journal of Korean Society for Quality Management
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    • v.42 no.4
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    • pp.665-684
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    • 2014
  • Purpose: The purpose of this study was to test and verify on the interrelationship among Service Quality, and Customer Satisfaction and Customer Loyalty in the Humidifier Goods industry. Especially, we study on the relative importance of each CS variables by distribution channel. Nowadays, most of manufacturing companies are proceeding the product servitization, which is combined service contents with product characteristics in the field of manufacturing industries. Methods: We surveyed humidifier purchaser about the some of CS variables and analyzed it using SPSS 21.0 and AMOS 21.0 as a statistical analysis tool. We use the frequency analysis, confirmatory factor analysis, multi-regression analysis and structural equation modeling analysis for our empirical study. Results: As the result of study, we find that Service Quality(SQ) influence Customer Satisfaction(CS) and CS influence Customer Loyalty(CL). Also, we verify that CS works mediate interaction on the effects between SQ and CL. And there are the significant relative effect of SQ to Customer Satisfaction in some of distribution channel. Conclusion: Finally, we make certain that the market size of the Humidifier goods industry will be increased rapidly. And the distribution channe l is more important to medium and small-sized enterprise. So, we have to pay attention to the study on the distribution channel of the Humidifier goods industry. And then, we expect more researches and studies on Service Quality and Customer Satisfaction in the field of manufacturing industries.

Design of Crossbar Switch On-chip Bus for Performance Improvement of SoC (SoC의 성능 향상을 위한 크로스바 스위치 온칩 버스 설계)

  • Heo, Jung-Burn;Ryoo, Kwang-Ki
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.3
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    • pp.684-690
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    • 2010
  • Most of the existing SoCs have shared bus architecture which always has a bottleneck state. The more IPs are in an SOC, the less performance it is of the SOC, Therefore, its performance is effected by the entire communication rather than CPU speed. In this paper, we propose cross-bar switch bus architecture for the reduction of the bottleneck state and the improvement of the performance. The cross-bar switch bus supports up to 8 masters and 16 slaves and parallel communication with architecture of multiple channel bus. Each slave has an arbiter which stores priority information about masters. So, it prevents only one master occupying one slave and supports efficient communication. We compared WISHBONE on-chip shared bus architecture with crossbar switch bus architecture of the SOC platform, which consists of an OpenRISC processor, a VGA/LCD controller, an AC97 controller, a debug interface, a memory interface, and the performance improved by 26.58% than the previous shared bus.