• Bulletin of the Korean Chemical Society
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• 제33권7호
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• pp.2447-2449
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• 2012

• Bulletin of the Korean Chemical Society
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• 제34권1호
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• pp.246-248
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• 2013

• 한국안전학회지
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• 제16권2호
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• pp.51-56
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• 2001

This paper is proposed an efficiency optimization control algorithm for a synchronous reluctance motor (SynRM) which minimizes the copper and iron losses. fen exists a variety of combinations of d and q-axis current which provide a specific motor torque. The objective of the efficiency optimization controller is to seek a combination of d and q-axis current components, which provides minimum losses at a certain operating point in steady state. It is shown that the current components which directly govern the torque production have been very well regulated by the efficiency optimization control scheme. The proposed algorithm allows the electromagnetic losses in variable speed and torque drives to be reduced while keeping good torque control dynamics. Simulation results are presented to show the validity of the proposed algorithm.

• International Journal of Quality Innovation
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• 제3권2호
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• pp.46-56
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• 2002

The presence of imprecise measurement may seriously affect the efficiency of process control and production cost. A cost model is derived to determine the design parameters of the economic asymmetric $\bar{X}$ and S control charts including measurement errors. The effects of imprecise measurement on the performance of the economic asymmetric $\bar{X}$ and S control charts and production cost are examined for the case where the process mean and process standard deviation may change. Application of the proposed control charts is demonstrated through an example. Numerical examples illustrate the effects of imprecise measurement on the design parameters of the proposed control charts. It shows that the imprecision measurement may seriously affrct the ability of the proposed control charts to detect process disturbances quickly, change the sampling frequency, and increase the production cost compared to the control charts excluding measurement errors.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권12호
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• pp.3100-3116
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• 2012

Reversible data hiding enables the embedding of messages in a host image without any loss of host content, which is proposed for image authentication that if the watermarked image is deemed authentic, we can revert it to the exact copy of the original image before the embedding occurred. In this paper, we present an improved histogram-based reversible data hiding scheme based on prediction and sorting. A rhombus prediction is employed to explore the prediction for histogram-based embedding. Sorting the prediction has a good influence on increasing the embedding capacity. Characteristics of the pixel difference are used to achieve large hiding capacity while keeping low distortion. The proposed scheme exploits a two-stage embedding strategy to solve the problem about communicating peak points. We also present a histogram shifting technique to prevent overflow and underflow. Performance comparisons with other existing reversible data hiding schemes are provided to demonstrate the superiority of the proposed scheme.

• Journal of Industrial and Engineering Chemistry
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• 제67권
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• pp.437-447
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• 2018

Visible-light-driven wide bandgap semiconductor photocatalysts were commonly developed via doping or coupling with another narrow bandgap metal oxide. However, these approaches required extra processing. The aim of study was to evaluate the photocatalytic performance of narrow bandgap $WO_x$ nanoparticles. A mixture of $WO_2$ and $WO_3$ nanoparticles were synthesized using solution precipitation technique. The photodegradation of RhB by these nanoparticles more effective in UV light than in visible light. In antibacterial susceptibility assay, $WO_x$ nanoparticles demonstrated good antibacterial against Gram-positive bacteria. The cell wall of bacterial was the main determinant in antibacterial effect other than $W^{4+}/W^{6+}$ ions and ROS.

• 한국지역지리학회지
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• 제21권3호
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• pp.489-502
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• 2015

실리콘펜 또는 케임브리지 현상으로도 알려져 있는 케임브리지 클러스터는 생명공학 산업 및 정보통신 산업에 특화되어 있는 혁신 클러스터로 잘 알려져 있다. 본 연구는 케임브리지 클러스터의 진화구조를 트리플힐릭스 관점을 중심으로 고찰한 것이다. 케임브리지 클러스터는 케임브리지대학을 중심축으로 형성된 자연발생적 클러스터로 간주할 수 있으나, 오늘날 케임브리지가 세계적인 첨단산업 클러스터의 기반을 갖추게 된 밑바탕에는 1960년대 후반에 결성된 산-학-관 협력체인 '케임브리지지역발전위원회'의 활동과 그 결과로 만들어진 모트보고서가 중요한 영향을 미쳤다. 그 후 1970년대부터 본격화된 클러스터의 성장과정에는 케임브리지대학의 칼리지들이 조성하기 시작한 사이언스 파크와 케임브리지대학의 스핀오프(스핀아웃) 활동이 활발하게 나타났다. 클러스터 진화의 역동성을 주도하는 지역 내 스핀오프 활성화의 기저에는 케임브리지 지역에 오랜 세월 누적되어 온 기업가주의 문화와 창업 및 기업 활동을 촉진하는 기업가 네트워크와 사회자본의 영향이 중요하게 작용했다. 그러나 2000년대 들어 대학의 재정 지원을 축소하고 기업가적 대학으로의 전환을 유도하는 정부의 정책기조가 심화됨에 따라 케임브리지대학의 스핀오프 활동은 크게 위축되었고, 이것이 케임브리지 클러스터의 역동적 진화를 위협하는 요소로 작용하고 있다.

• Journal of Acupuncture Research
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• 제23권4호
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• pp.39-47
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• 2006

Objectives : The following study was undertaken in order to seek the acupuncture operation method of ${\ll}$Sang Han Lun(傷寒論)${\gg}$ Liu- Jing-Bian-Zheng(六經辯誇). Methods : Based on tile documents quoted in ${\ll}$Sang Hang Za Bing Lun Xu Wen(傷寒雜病論 序文)${\gg}$ of 'Zhang, Zhong-Jing(張仲景)', the relativity of the theory of Jing-Mai(經脈) and Liu-Jing-Bian-Zheng of convalescence, and from the Liu-Jing-Bing(六經病), the origin and implication that caused Jue-yin-Bing(厥陰病) to form was studied on the basis of acupuncture medicine publications and e commentary writing of ${\ll}$Sang Han Lun${\gg}$. Results : 1. ${\ll}$Sang Han Lun${\gg}$ Liu-Jing-Bian-Zheng has succeeded and was developed based on Liu-Jing-Fen-Zheng(六經分證) of ${\ll}$Su Wen Re Lun(素問 熱論)${\gg}$. In addition, the summary of Liu-Jing-Bing became the general pnnciple of Fen-Jing(分經) and Ding-Zheng(定證) that may be applicable to Fenghan(風寒), Wenre(溫熱), Lili(疫癩) and Eating(雜病). 2. Most commentators of ${\ll}$Sang Han Lun${\gg}$ in the Song, Ming and Ching Dynasties of ${\ll}$Sang Han Lun${\gg}$ interpreted the Jue-Yin-Bing in physiological and pathological aspects of Rong-Wei(榮衛) as the disease of the Sim Po and Liver meridian. 3. From the Liu-Jing-Bing of ${\ll}$Sang Han Lun${\gg}$, the region of acupuncture treaaent of Jue-Yin-Bing is treated with the needle from the point of view of Bing-fheng-Lun-fhi(辨證論治) with the basis of the important region of acupuncture of the Sim Po of meridian and Liver of meridian.

• Journal of Acupuncture Research
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• 제24권3호
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• pp.119-126
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• 2007

Objectives: The following study was undertaken in order to seek the acupuncture operation method of ${\ll}$Sang Han Lun(傷寒論)${\gg}$ Liu-Jing-Bian-Zheng(六經辯證). Methods: Based on the documents quoted in ${\ll}$Sang Han Za Bing Lun ${\cdot}$ Xu Wen(傷寒雜病論 ${\cdot}$ 序文)${\gg}$ of "Zhang, Zhong-Jing(張仲景)", the relativity of the theory of Jing-Mai(經脈) and Liu-Jing-Bian-Zheng of convalescence, and from the Liu-Jing-Bing(六經病), the origin and implication that caused So-Yang-Bing(少陽病) to form was studied on the basis of acupuncture medicine publications and the commentary writing of ${\ll}$Sang Han Lun${\gg}$. Results: 1. ${\ll}$Sang Han Lun${\gg}$ Liu-Jing-Bian-Zheng has succeeded and was developed based on Liu-Jing-Fen-Zheng(六經分證) of ${\ll}$ Su Wen ${\cdot}$ Re Lun(素問 ${\cdot}$ 熱論)${\gg}$. In addition, the summary of Liu-Jing-Bing became the general principle of Fen-Jing(分經) and Ding-Zheng(定證) that may be applicable to Fenghan(風寒), Wenre(溫熱), Lili and Zabing(雜病). 2. Most commentators of $\ll$Sang Han Lun$\gg$ in the Song, Ming and Ching Dynasties of ${\ll}$Sang Han Lun${\gg}$interpreted the So-Yang-Bing in physiological and pathological aspects of Rong-Wei(榮衛) as the disease of the bladder meridian that oversees the skin of the human body. 3. From the Liu-Jing-Bing of ${\ll}$Sang Han Lun${\gg}$, the region of acupuncture treatment of So-Yang-Bing is treated with the needle from the point of view of bing-Zheng-Lun-Zhi(辯證論治) with the basis of the important region of acupuncture of the Triple Energizer meridian and Gallbladder of meridian.

• 대한치과교정학회지
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• 제29권6호
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• pp.637-648
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• 1999

교정 치료 후 이상적인 교합과 양호한 심미적 결과를 얻기 위해서 일반적으로 교정 장치 제거하기 4개월에서 7개월 전에 detailing을 시행한다. 이와 같은 과정을 finishing이라고 하며, 이 과정은 최종적인 양호한 결과를 얻는데 있어서 필수적이다. 일부 교정의는 finishing을 위한 특별한 이론적 근거 및 기준 없이 이 과정을 교정 치료의 마지막 단계에서 시행하면 되는 것으로 여기고 있다. 그러나, 최종적인 양호한 교정 치료 결과를 얻기 위해서는finishing 과정이 총 치료 계획의 부분으로 치료의 초기 단계에서부터 고려되어야만 하며, 교정 장치 제거를 위한 이론적 근거 및 기준에 근거한 finishing을 위한 checklist가 필요하다. 이 checklist는 크게 네 부류로 분류할 수 있다. 즉, 교합 요인, 심미적 요인, 치주적 요인과 습관적 요인으로 분류할 수 있다. 교합 요인에서 점검해야할 요소로는 alignment, marginal ridge discrepancy, interproximal contact, anterior inclination, posterior inclination, overjet, overbite, arch form과 functional occlusion 등이 있다. 심미적 요인에는 gingival form, crown form, crown width과 crown length 등이 있다. 치주적 요인에는 root angulation, bone level 등이 있다. 습관적 요인에는 mouth breathing, tongue position at rest, tongue thrust habit, lip biting, nail biting과 finger sucking 등이 있다.