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Performance Analysis of Packet Transport Network Communication for Integrated Wide-Area Protection
Sheng-ming Ge,Z Q Bo,Lin Wang,Zhan-feng Fan,Xing Liu,Feng-quan Zhou 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.3
As a new protection, wide-area protection enables protective relaying, and automatic control based on electric power system network communications and comprehensive judgment of multi-point information, which plays an increasingly important role in the secure and stable operation of electric power system. Interaction of wide-area information relies on communication network featuring high reliability and low time delay. On the other hand, most service of power transformation station is gradually towards IP and data oriented, along with the development of smart grid. This paper aims to introduce the wide-area protection technology supported by Packet Transport Network (PTN) communication technology, with analyzing the QoS (Quality of Service) network assurance architecture of PTN network, which establishes three planes, including transport plane, management plane, and control plane, based on ASON (Automatically Switched Optical Network) technology. After demonstrating the QoS assurance system of PTN from traffic control and transmission route, this paper introduces PTN networking test. Based on detailed parameters in the test results, the transmission performance of PTN on time delay, protection, and time synchronization of various electric power communication services are analyzed, with showing that PTN can fully meet the requirements of electric power communication.
A Study on Success Factors in the 6th Industrialization of Agriculture in Korea and China
Ming-Sheng Zhu,Jin-Sup Jung 한국무역연구원 2017 貿易 硏究 Vol.13 No.4
Rural communities in both Korea and China have faced important negative conditions, such as a population decrease, aging, and the increasing income gap between urban and rural areas. To overcome these problems, a new change is needed in rural areas. In recent years, the 6th industrialization of agriculture, which seeks the convergence of the primary, secondary, and tertiary industries to revitalize agriculture and rural villages, has attracted considerable attention as an alternative. Meanwhile, Korea and China have plentiful humanistic resources. However, there are few studies on how humanistic resources affect the success in the 6th industrialization of agriculture. The goal of this study it to carry out empirical tests on Korea and China, using key successful factors―technology, manpower, market expansion, government support, linkages among industrial subjects―for the 6th industrialization of agriculture and find moderating effects of physical humanistic resources. Results suggest some valuable implications, and differences between Korea and China.
Adjusting optical resonance thickness to increase the conversion efficiency of polymer solar cells
Yu Sheng Tsai,Jian-Shian Lin,Wei-Ping Chu,Po-Hsun Wang,Fuh-Shyang Juang,Ming-Hua Chung,Chin-Ming Chen,Mark O. Liu 한국물리학회 2010 Current Applied Physics Vol.10 No.3
The derivatives of C60, [6,6]-phenyl C61-butyric acid methyl ester (PCBM), and 3-hexylthiophene (P3HT)were dissolved in DCB solvent, then spin coated into an active layer for polymer solar cells. The experimental parameters were studied carefully to obtain the optimum power conversion efficiency (PCE). The primary process for generation of photocurrent in an organic photovoltaic device is the generation of bound electron–hole pairs (excitons) by absorption of energy (photons) from the optical electric field. Modeling was based on the assumption that the photocurrent generation process is the result of the creation and diffusion of photogenerated species (excitons), which are dissociated by charge transfer at the active layer. Improve organic optics absorb by insert organic layer (CuPc or C60) at the active layer/Al interface. This research is divided into two components. First part, we use n-type C60 as transmission layer. When an optimum thickness of C60 is 5 nm, the Jsc of polymer solar cell can be increased from 7.26 mA/㎠ to 7.7 mA/㎠. The Voc decrease is because the energy level of C60 LUMO (lowest unoccupied molecular orbital) at 4.5 eV is higher than the 3.7 eV of PCBM. Second part, we use p-type CuPc as transmission layer. When an optimum thickness of CuPc is 3 nm, the short circuit photo-current density (Jsc) and open circuit voltage (Voc) of polymer solar cell can be increased from 7.26 mA/㎠ to 8.0 mA/㎠ and 0.56–0.58 V, respectively. The reason is the same as C60. The Voc increase is because the energy level of CuPc LUMO (lowest unoccupied molecular orbital) at 3.1 eV is lower than the 3.7 eV of PCBM. The Jsc increase is because the 3 nm of CuPc leads to a constructive interference happened in the active layer and thus optical absorption increases. In this study we used 3 nm of CuPc at the active layer/Al interface to enhance the short circuit current density, and the efficiency was increased to 2.94%.
엽명생 ( Ming Sheng Ye ) 한양대학교 동아시아문화연구소 (구 한양대학교 한국학연구소) 2012 동아시아 문화연구 Vol.51 No.-
통상 학계에서 주목하는 연극으로, 문인과 선비, 고관과 귀인이 감상하는 예술극과 교통이 발달하고 경제가 번영한 도시에서의 오락극 및 향촌 사원 축제나 정기 시골장에서 상업성 극단이 연출하는 신과 인간이 함께 즐기는 연극을 들 수 있다. 그 연출 주체는 혹은 전문 직업극단의 예인이거나 혹은 문인으로 다소 훈련을 통해 소질을 갖춘 아마추어 배우이거나 혹은 농사를 지으며 때로 극단 활동을 하는 반 직업 배우다. 학자들은 극예술 자체에만 주로 관심을 기울인다. 그러나 일부 산간의 외진 곳에서는 여전히 오직 전적으로 종족의 제사에만 쓰이는 제사연극이 전승되고 있다. 공연의 조직은 종족의 어른이 담당하고, 배우는 종족 내 농가 자제들이 맡는다. 이는 대도시와 시골에서 유행하는 연극 양상과 크게 다르다. 그 공연은 종족의 연례 제사 때에 특별하게 이루어진다. 이런 제사 연극은 사회적으로 잘 알려져 있지 않아 아직 문화계 및 학계의 충분한 주의가 기울여지지 않고 있다. 복건성정화현 화양 촌의 종족연극은 바로 그 전형적인 예로 볼 수 있다. 그 종족 연극의 발견은 중국 고대 농업 사회에서 연극이 종족제사에서 차지하는 역할과 위상을 밝히고, 종족제사와 연극의 상호 의존 관계를 이해하는데 의미를 지니며, 고대 연극이 민간 종족 제사 의식 활동 가운데서 변천을 거듭하면서 전승되어 온 자연스런 양상을 보여 준다는 데 의의가 있다. 오늘날 고대 연극이 민간에 유전되고 존속되는 사회적 원인을 이해하고 탐구할 수 있는 기회를 제공할 뿐만 아니라, 중국 민간 연극사 연구에도 오래되었으면서도 살아있는 참조 물을 제공하는 셈이다. Generally, the operas studied by the academia are the "elegant" ones appreciated by the gentry, the entertaining ones played in the theatre of the metropolitan cities, and the ritual ones to amuse both gods and human beings performed in the temple stages of the villages and market places. The performers in these operas are professional actors of the theatrical troupe, well trained but semi-professional literati, and amateurs consist of farmer-actors. In the past, most scholars only paid attention to the operas that could be categorized as performing arts. But, in the remote mountain areas, there still exist one special ritual opera dedicates to the worship of lineage ancestors. The organizer is the head of the lineage, and the performers all come from the same lineage. As a specific ritual performance for annual ancestor worship, it is quite different from the popular operas in the cities and villages. Such kind of ritual opera is seldom noticed by the people, and ignored by the scholars. The lineage opera in Heyang village of Zhenghe County, Fujian is a typical example of it. The significance of the discovery lies in the new light it shed on the role and status operas had in ancestor worship in ancient agricultural China, the interdependent relationship of ancestor worship and operas, and the original form and development of traditional opera in the ritual of lineage. Thus, it also helps us to study the popularization of traditional opera in the folk societies and the social background for its development, providing a useful and fresh reference for the research of the history of Chinese opera.
Yi-Sheng Liu,Ming-Ching Ou,Yi-Shan Tsai,Xi-Zhang Lin,Chien-Kuo Wang,Hong-Ming Tsai,Ming-Tsung Chuang 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.1
To retrospectively compare treatment of hepatocellular carcinoma (HCC) with transarterial chemoembolization (TACE) using gelatin sponges or microspheres plus lipiodol-doxorubicin vs. doxorubicin-loaded drug-eluting beads (DEB). A total of 158 patients with HCC received TACE from November 2010 to November 2011 were enrolled in this study, including 64 (40.5%) received TACE with lipiodol-doxorubicin and gelatin sponges (group A), 41 (25.9%) received TACE with lipiodol-doxorubicin and microspheres (group B), and 53 (33.5%) received TACE with doxorubicin-loaded DEB (group C). Tumor response and adverse events (AEs) were evaluated. No significant difference was found at baseline among the three groups. The doxorubicin dosage in group C wassignificantly (p < 0.001) higher compared to the dose used in groups A or B (median, 50 mg vs. 31 mg or 25 mg). Significantly (p < 0.001) more patients in group C achieved complete response compared to those in groups A or B (32.1% vs. 6.3% or 2.4%). Significantly (p < 0.001) less patients in group C had progressive disease compared to those in groups A or B (34.0% vs. 57.8% or 68.3%). Minor AEs were more common in groups A and B compared to group C, with rates of 54.7%, 34.1%, and 5.7%, respectively. In patients with HCC, TACE with DEB offers better safety and efficacy profiles compared to either TACE with gelatin sponges or TACE with microspheres.
Chuang, Sheng-Ming,Ya, Vinh,Feng, Chiao-Lin,Lee, Shou-Jen,Choo, Kwang-Ho,Li, Chi-Wang Elsevier 2018 Separation and purification technology Vol.191 No.-
<P><B>Abstract</B></P> <P>A systematic investigation of Cr(VI) reduction using electrochemical reduction revealed that the Cr(VI) reduction was extremely fast with reaction kinetics limited by the anodic generation of Fe(II). The Cr(VI) reduction rate increased with decreasing pH at the initial stage of reaction but the time to reach complete Cr(VI) reduction is pH independent. The amount of Fe(II) generated per mole of Cr(VI) reduced was calculated and compared with the stoichiometric value, i.e., 3mole of Fe(II) needed per mole of Cr(VI) reduced. The values are 11.1% higher than the stoichiometric value for pH 7 and 9, but are 32.0% less for pH 3 and 5. The spontaneous reduction of Cr(VI) by Fe<SUP>0</SUP> and adsorption of Cr(VI) to Fe(OH)<SUB>3</SUB> precipitates might contribute the additional Cr(VI) removal. Effect of DO was investigated under various mixing schemes. Under N<SUB>2</SUB> purging, Fe(II) generated for one mole of Cr(VI) reduced is 3.67% higher than the stoichiometric value, while mechanic mixing and aeration mixing show 15% and 19%, respectively, higher than stoichiometric value, indicating that DO does impact Cr(VI) reduction. The electrochemical Cr(VI) reduction process was also employed to treat electroplating wastewater with and without pH pre-adjustment, achieving 100% total Cr and Ni removal for both cases. ORP can be used as a controlling parameter when electrochemical reduction is implemented for Cr(VI) reduction.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Effect of current on Cr(VI) reduction under same current density was studied. </LI> <LI> Effects of initial and fixed pH on Cr(VI) reduction were investigated. </LI> <LI> Effect of DO on Cr(VI) reduction was explored. </LI> <LI> Electrochemical reduction was applied for treating electroplating wastewater. </LI> <LI> ORP is an ideal parameter for controlling electrochemical Cr(VI) reduction. </LI> </UL> </P>