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      • KCI등재

        중국영화의 전통 수묵화 촬영기법 연구 - 장이머우 영화 < 삼국-무영자(Shadow) 2018 > 중심으로

        장서붕 ( Zhang Ruifeng ),양윤호 ( Yang Yun-ho ) 부산대학교 영화연구소 2020 아시아영화연구 Vol.13 No.3

        본 연구는 장이머우(張藝謀) 감독의 작품< 삼국-무영자(Shadow, 影), 2018 >에 나타난 중국 전통 수묵화 기법의 대표적인 촬영장면과 영상기법에 대하여 분석하고자 한다. 이 영화를 대표 사례로 선정한 이유는 중국에서 색채를 이용하는 대표적인 감독이라 알려진 장이머우 감독이 시도한 최초의 중국 전통 수묵화 스타일의 영화이기 때문이다. 이는 중국 영화 역사상으로도 주목할 만한 첫 번째 도전이라고 할 수 있다. 따라서 장이머우 감독의 촬영 스타일에 관한 논문 및 인터뷰 등의 자료들을 바탕으로 중국영화의 전통 수묵화(水墨畵) 촬영기법 분석을 구체적으로 분석하기 위해 먼저 회화기법과 중국영화, 장이머우 감독 영상의 특징을 고찰하고 중국 전통 수묵화 기법의 특징을 여백(餘白)과 색채, 구도로 구분하여 고찰하고자 한다. 이러한 선행연구를 바탕으로 영화 <삼국-무영자>에서 활용된 중국 전통 수묵화 촬영기법을 분석함으로써 효과와 결론을 제시하고자 한다. 중국의 대표적인 감독인 장이머우의 중국 전통 수묵화 기법의 운용과 효과에 대한 분석은 향후 중국영화 촬영연구에 있어 새로운 계기가 될 것으로 보인다. First of all, this paper aims to confirm the utilization of Chinese traditional Ink-and-Wash painting skill through the analysis of the filming skills of director Zhang Yi-mou's film Shadow(影, 2018). Specifically, it will be the work of analyzing and interpreting the Ink-and-Wash painting skill of Shadow shooting skills through composition, color, etc. These traditional Chinese Ink-and-Wash painting skills are currently used in Chinese film making. While verifying how it is utilized, director Zhang Yi-mou of filming is aimed at verifying the practice of traditional Chinese Ink-and-Wash painting skills. Zhang Yi-mou's film features a Chinese-style not only in narrative, but also in screen composition. It is clear that Zhang Yi-mou represents a generation in the Chinese film industry, so the author hopes this article will provide a point of view that can be applied in the application of Chinese-style filming skills in Chinese film. The method and procedure of this study are as following. First and foremost, analyze the Zhang Yi-Mou's film Shadow by referring to the papers and interviews of filming style. In his film, traditional Chinese Ink-and-Wash painting skills are realized in any way, and the reason why chose this film because that was the Chinese commercial film which first made by Chinese Ink-and-Wash painting skills. Next, in the main part, director Zhang Yi-Mou, who naturally applies Ink-and-wash painting skills in the screen, examines the characteristics and meaning of the combination of Ink-and-Wash Painting skills and shooting through the composition, space, movement, color, and costume of a specific scene. Finally, the author plans to derive how to use the unique skills contained in traditional culture in the film making process.

      • KCI등재

        A Wide Voltage-Gain Range Asymmetric H-Bridge Bidirectional DC-DC Converter with a Common Ground for Energy Storage Systems

        Yun Zhang,Yongping Gao,Jing Li,Mark Sumner 전력전자학회 2018 JOURNAL OF POWER ELECTRONICS Vol.18 No.2

        A wide-voltage-conversion range bidirectional DC-DC converter is proposed in this paper. The topology is comprised of one typical LC energy storage component and a special common grounded asymmetric H-bridge with four active power switches/anti-parallel diodes. The narrow output PWM voltage is generated from the voltage difference between two normal (wider) output PWM voltages from the asymmetric H-bridge with duty cycles close to 0.5. The equivalent switching frequency of the output PWM voltage is double the actual switching frequency, and a wide step-down/step-up ratio range is achieved. A 300W prototype has been constructed to validate the feasibility and effectiveness of the proposed bidirectional converter between the variable low voltage side (24V~48V) and the constant high voltage side (200V). The slave active power switches allow VS turn-on and turn-off without requiring any extra hardware. The maximum conversion efficiency is 94.7% in the step-down mode and 93.5% in the step-up mode. Therefore, the proposed bidirectional topology with a common ground is suitable for energy storage systems such as renewable power generation systems and electric vehicles with a hybrid energy source.

      • SCIESCOPUSKCI등재

        CHARACTERIZATION OF RATIONAL TIME-FREQUENCY MULTI-WINDOW GABOR FRAMES AND THEIR DUALS

        Zhang, Yan,Li, Yun-Zhang Korean Mathematical Society 2014 대한수학회지 Vol.51 No.5

        This paper addresses multi-window Gabor frames with rational time-frequency product. Such issue was considered by Zibulski and Zeevi (Appl. Comput. Harmonic Anal. 4 (1997), 188-221) in terms of Zak transform matrix (so-called Zibuski-Zeevi matrix), and by many others. In this paper, we introduce of a new Zak transform matrix. It is different from Zibulski-Zeevi matrix, but more direct and convenient for our purpose. Using such Zak transform matrix we characterize rational time-frequency multi-window Gabor frames (Riesz bases and orthonormal bases), and Gabor duals for a Gabor frame. Some examples are also provided, which show that our Zak transform matrix method is efficient.

      • KCI등재

        CFRP 보강근을 이용한 콘크리트 보의 피로거동

        Zhang, Pei-Yun,김옥규,최현 한국건축시공학회 2019 한국건축시공학회지 Vol.19 No.6

        Recently, research has been carried out into the use of carbon fiber reinforced polymer (CFRP), which has goodtensile strength and corrosion resistance, as an alternative to rebar. But as of yet, the research into fatigue failure ofCFRP is insufficient. In this paper, an analysis was performed of the mechanical behavior and failure patterns of CFRPreinforced concrete beams according to static and cyclic loads, in order to evaluate the safety and validity of CFRPrebar as an alternative material for rebar. The cyclic load ranged from 10 % to 70% of the ultimate load, and wasloaded at a speed of 3Hz using a sine wave in the form of a three-point loading method. Through the static load test,the maximum load or stiffness of the beam was found to increase remarkably with the increase of the reinforcement,but the fatigue test showed that the number of repetitions decreased and the amount of deflection increased with theincrease of the reinforcement. 최근 철근의 대체재로서 인장강도나 내부식성이 좋은CFRP(carbon fiber reinforced polymer)를 이용한 연구가 활발히 진행되고 있다. 그러나 현재 피로 파괴에 대한연구는 미비한 상태이다. 따라서 본 연구에서는 CFRP보강 콘크리트 보를 제작하여 정적 및 반복 하중에 따른 역학적 거동과 파괴형태를 분석하고 철근의 대체 재료로서 CFRP 보강근 사용에 대한 안전성과 타당성을 평가하도록 하였다. 반복하중의 범위는 극한하중의 10~70%를 취하고 3점 재하방식으로 sine파를 이용한 3Hz의 속도로 재하 하였다. 정적 실험결과 보강량의 증가에 따라 보의 최대하중이나 강성은 현저하게 증가하였지만 피로 실험결과 보강량의 증가에 따라 반복 횟수는 감소하고 처짐량은 증가하여 안전성은 다소 감소됨을 알 수 있었다.

      • KCI등재

        Sorption enhancement of TBBPA from water by fly ash-supported nanostructured g-MnO2

        Yun Zhang,Lingyun Jing,Xinghua He,Yanfeng Li,Xin Ma 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

        Tetrabromobisphenol A (TBBPA), an emerging contaminant, has been detected frequently in theenvironmental media. This study reports the adsorption kinetics, equilibrium and thermodynamics ofTBBPA on fly ash modified by nanostructured MnO2 (FA@nM). The resulting nano-adsorbent wascharacterized by means of the Fourier transform infrared spectra (FT-IR), XRD and scanning electronmicroscope (SEM). The adsorption results showed that the equilibrium adsorption capacity has beensignificantly improved by increasing the initial TBBPA concentration and contact time. While a largereduction of TBBPA uptake was observed in alkaline conditions and at high temperatures and ionicstrength. The equilibrium between TBBPA and FA@nM was achieved in approximately 40 min withremoval of 98% of the TBBPA. The sorption kinetics were well described by a pseudo-first-order ratemodel, while both Langmuir and Freundlich models described the sorption isotherms well at 298 K. Thermodynamic parameters suggested that the adsorption of TBBPA is exothermic and spontaneous atthe temperatures studied. As fly ash is a low-cost material that is often available on-site, it offers aninteresting alternative to high-cost advanced wastewater treatment systems for removing such organicpollutants.

      • KCI등재

        Feasibility of Using a One-temperature Model for Determining Plasma’s Temperature by Measuring Its Refractive Index

        Yun-yun Chen,Fen-ping Cui,Fang Gu,Ying-ying Zhang 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.11

        In this paper, the feasibility of using a one-temperature model to determine plasma’s temperatureby measuring its refractive index is studied based on the consideration that many plasma flow fieldsare not in local thermodynamic equilibrium (LTE). We compare the refractive indices between theone- and the two-temperature models of an arc plasma, in order to discuss the applicability ofthe one-temperature model in optical diagnosis. We found that the applicability is determined bythe pressure, the temperature ratio between electrons and heavy particles, the probe wavelength,and the chosen optical method’s refractive index measurement precision. Consequently, a commonmodel is deduced to describe the refractive index of plasma whether it be in LTE or not. In a word,this study is crucial to better apply optical methods based on measurements of the refractive indexto diagnose plasma flow fields.

      • Mechanisms of Hela Cell Apoptosis Induced by Abnormal Savda Munziq Total Phenolics Combined with Chemotherapeutic Agents

        Zhang, Yun-Xia,Abliz, Guzalnur,Ye, Wei-Jun,Mutalipu, Zuohelaguli,Li, Xiao-Wen,Wang, Hai-Qin,Buranjiang, Gulimire,Upur, Halmurat Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.2

        Objective: To investigate the effects of abnormal Savda Munziq (ASMq) total phenolics combined with cisplatin and docetaxel on the Hela cell growth. Methods: In vivo cultured Hela cells were treated with cisplatin, docetaxel, total phenolics, cisplatin+total phenolics or docetaxel+total phenolics. MTT was performed to assess inhibition of cell proliferation, flow cytometry to detect apoptosis, and semi-quantitative RT-PCR to test for survivin and Bcl-2 expression. Results: The total phenolics, cisplatin and docetaxel had significant inhibitory and apoptosis-promoting effects on Hela cells (P<0.05), with the early apoptotic rates of $12.8{\pm}0.70%$, $18.9{\pm}3.79%$ and $15.8{\pm}3.8%$; the total phenolics, cisplatin and docetaxel significantly decreased the expression of Bcl-2 and survivin (all P<0.01), especially when used in combination. Conclusion: ASMq total phenolics, combined with cisplatin and docetaxel, could promote the apoptosis of Hela cells possibly through reducing the expression of Bcl-2 and survivin.

      • SCIESCOPUS

        Study on economic performances of multi-span suspension bridges part 2: parametric study

        Zhang, Li-Wen,Xiao, Ru-Cheng,Sun, Bin,Jiang, Yang,Zhang, Xue-Yi,Zhuang, Dong-Li,Zhou, Yun-Gang,Tu, Xue Techno-Press 2013 Structural Engineering and Mechanics, An Int'l Jou Vol.47 No.2

        Economic performances of consecutive multi-span suspension bridges are studied. The material amount and cost estimation formulas of the bridges have been derived in the part 1 of the study. A parametric study is carried out based on the formulas for investigating the different factors' effect on the bridge cost. The factors include the bridge sag, the bridge span, the bridge foundation and the environment condition, etc. Then, an economical layout of the bridges is proposed for different conditions. Lastly, a selection of suspension bridge types is discussed based on the economy of bridges.

      • SCIESCOPUSKCI등재

        Transformerless Three-Level DC-DC Buck Converter with a High Step-Down Conversion Ratio

        Zhang, Yun,Sun, Xing-Tao,Wang, Yi-Feng,Shao, Hong-Jun The Korean Institute of Power Electronics 2013 JOURNAL OF POWER ELECTRONICS Vol.13 No.1

        For high power high step-down dc-dc conversion applications, conventional three-level dc-dc converters are subject to extreme duty cycles or increased volume and cost due to the use of transformers. In this paper, a transformerless three-level dc-dc buck converter with a high step-down conversion ratio is proposed. The converter comprises two asymmetrical half bridges, which are of the neutral point clamped structures. Therefore, the output pulse voltage of the converter can be obtained in terms of the voltage difference between the two half bridges. In order to realize harmonious switching of the converter, a modulation strategy with capacitor voltages self balance is presented. According to the deduced output dc voltage function, transformerless operation without extreme duty cycles can be implemented. Experimental results from a 1kW prototype verify the validity of the proposed converter. It is suitable for ship electric power distribution systems.

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