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走向能動時代的努力 : 論王國維古文論轉換的理論與實踐기當代啓示
李哲理,吳中勝 慶南大學校 人文科學硏究所 1998 人文論叢 Vol.10 No.-
The modern scholars had done various exploration into a historical subject on the alternation of the statement for ancient Chinese Literature theories. The most successful was Mr. Wang Guo Wei's Theory of Activity. He insisted on the independence of study, the scholar as the master of his own views and the combination of Chinese and Western views. Mr. Wang's theory had greatly influeneced his own experience on the point of literature and has definitely been a source of inspiration for scholar's today.
The Operational Risks of Electricity Futures Based on Non-Storability of Electric Power
WU Zhong-qun 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
Electricity futures emerged in 1990"s, and it was expected to bring electricity market efficiency and stability. However, the practice on electricity futures show that it can not efficiently prevent the fluctuation of market price, and eve the electricity futures market may go to collapse. Up to now, none of literatures clears the question. This paper gives the causes that lead up to the failure of electricity futures market by analyzing the internal interaction mechanism between electricity futures price and spot prices. First, electric power is not economically storable, as a result electricity futures exchange can not at all make an influence to electricity spot prices through inventory change; second, traders always modify the quotation on the basis of expectation about the state of electricity market in the future, so the expectation plays an important role for the prices of futures contracts. The paper concludes that the failure of electricity futures market can fundamentally be attribute to two reason: (1) non-storage of electric power, i.e. that electricity futures market inevitably goes to collapse if only the electricity can not be stored economically; (2) the instability of expectation, which will directly cause the fluctuation of prices in electricity market.
Adaptive Fault Diagnosis and Active Tolerant Control for Wind Energy Conversion System
Zhong-Qiang Wu,Yang Yang,Chun-Hua Xu 제어·로봇·시스템학회 2015 International Journal of Control, Automation, and Vol.13 No.1
The fault mathematic model of the transmission part of wind energy conversion system (WECS) is established, and adaptive fault observer is constructed in the presence of unknown disturbance, it can detect the faults of the system, and estimate these faults. Then, based on fault observer, an active tolerant controller is designed to ensure the stability of the transmission part of WECS with fault .The simulation results of different type faults of generator show the effectiveness and feasibility of adaptive fault diagnosis methods.
Wu, Zhen-Guo,Li, Jun-Tao,Zhong, Yan-Jun,Guo, Xiao-Dong,Huang, Ling,Zhong, Ben-He,Agyeman, Daniel-Adjei,Lim, Jin-Myoung,Kim, Du-ho,Cho, Maeng-hyo,Kang, Yong-Mook American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.25
<P>A synergistic approach for advanced cathode materials is proposed. Sodium manganese oxide with a layered-tunnel hybrid structure was designed, synthesized, and subsequently investigated. The layered-tunnel hybrid structure provides fast Na ion diffusivity and high structural stability thanks to the tunnel phase, enabling high rate capability and greatly improved cycling stability compared to that of the pure P2 layered phase while retaining the high specific capacity of the P2 layered phase. The hybrid Structure provided a decent discharge capacity of 133.4 mAh g(-1) even at 8 C, which exceeds the reported hest rate capability for Mn-based cathodes. It also displayed an impressive cycling stability, maintaining 83.3 mAh g(-1) after 700 cycles at 10 C. Theoretical calculation and the potentiostatic intermittent titration technique (PITT) demonstrated that this hybrid structure helps enhance Na ion diffusivity during charge and discharge, attaining, as a result, an unprecendented electrochemical performance.</P>
Wu, Qiang,Zhao, Yi-Bing,Sun, Zhi-Hua,Ni, Jing,Wu, Yu-Zhong,Shao, Heng-Hua,Qu, Jun-Wei,Huang, Xin-En Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12
Aim: To examine lymph nodes obtained after lipolysis and liposuction of subcutaneous fat of the inguinal region of female vulvar cancer patients to explore the feasibility of clinical application. Methods: The field of operation was on the basis of the range of the conventional resection of inguinal lymph nodes. We injected lipolysis liquid fanwise, started liposuction after 15-20 minutes; then the subcutaneous fatty tissue was sucked out clearly by suction tube. We selected the first puncture holes located on 2-3 cm part below anterior superior spine, the others respectively being located 3cm and 6cm below the first for puncturing into the skin, imbedding a trocar to intorduce $CO_2$ gas and the specular body, and excise the lymph nodes by ultrasonic scalpel. The surgical field chamber was set with negative pressure drainage and was pressured with a soft saline bag after surgery. Results: A lacuna emerged from subcutaneous of the inguinal region after lipolysis and liposuction, with a wide fascia easily exposed at the bottom where lymph nodes could be readily excised. The number of lymph nodes of ten patients excised within the inguinal region on each side was 4-18. The excised average number of lymph nodes was 11 when we had mature technology. Conclusion: Most of adipose tissue was removed after lipolysis and liposuction of subcutaneous tissue of inguinal region, so that the included lymph nodes were exposed and easy to excise by endoscope. This surgery avoided the large incision of regular surgery of inguinal region, the results indicating that this approach is feasible and safe for used as an alternative technology.