은희경의 「내가 살았던 집」에 나타나는 영화적 기법

김예니(Kim Ye-Nie) 돈암어문학회 2005 돈암어문학 Vol.- No.18

The strategy of the narrative in the novel of Eun Hi-Kyoung is verified. First, in her text whose character has “the cynical smile” and “the feigned wickedness”, which has the peculiarity that a “focalizer” and “voice” in the text is divided and overlaped. When a focalizer and voice is certainly divided, a focalizer secures the distance with the objectivity and just get a view of the world and the object as well as a character in the text with a view of “the cynical smile” and “the feigned wickedness”. But in the story about the past which is located in the interval of the present time, a focalizer and voice is unjustly divided, or overlaped almost. And throughout this story about the past, A event of the precent which looks meaningless acquires the meaning. At this time, we can realize that the writer is hiding away a restrained desire and thought behind the “the cynical smile”.<br/> Second, the Hard-cut of Montage which appears in the 「The House that I had been」 shows the transformed space made in the memory which looks the object. The arrangement that the past and the present, or difficult stories, or the object and the space stand in a line gives a reader the construable space. At the same time, the meaningless event that happens now has the meaning throughout the memory about the past and a reader can see and feel the space closer than others. Those peculiarities are the modern novel's and film-art's. Eun Hi-Kyoung makes the effect throughout the strategy of the narrative which evokes “the cynical smile” and "the feigned wickedness" that it is made in that a focalizer and voice is divided and overlaped, or situations and shots stand in a line.

A Damage Constitutive Model of Q345B Steel in Circular Tubes Based on Cyclic Experiments and Its Application on Structure

Gui-bo Nie,Chenxiao Zhang,Xudong Zhi,Kun Liu,Huihuan Ma 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.2

Q235B and Q345B are two structural steel grades widely used in China. In previous studies, more precisely in 2012, Nie defi ned a normalized constitutive model using material damage accumulation to describe damage behavior of Q235B steel in circular tubes. This paper focuses on the hysteretic damage behavior of Q345B steel in a circular steel tube under cyclic loads and describes the damage mechanism through a damage constitutive model based on experimental results. Three equations are implemented in the constitutive model, which includes a damage index to accurately describe the plastic and damage behavior of the material. Experiments were conducted in which a cyclic loading is applied in three directions on a circular steel tube. The constitutive model was implemented in the ABAQUS FEA software through a user-defi ned subroutine. Some parameters in the constitutive model were calibrated based on the experimental and numerical results. The performance behavior of a single-layer reticulated dome under seismic motion record was investigated through the increment dynamic analysis method. The results indicate that the constitutive model is suitable for analyses and quantifying seismic damage accumulation and progressive failure and it is also benefi cial for investigating the nonlinear dynamic behavior of structures under seismic loads. The eff ect of accumulated material damage can describe large-scale structural deformation and obvious reduction in the failure limit load.

Optimal Design for Initial Pressures of Dual-Chamber Shock-Absorbers in Landing Gears

Nie, H.,Lim, K. H. 대한기계학회 1996 International Sessions in Celebration of the 50th Vol.1 No.1

The paper deals with the optimization of initial air pressures in dual-chamber shock absorbers of aircraft landing gears. The objective function is the air-spring forces to be minimized in shock absorbers. Multi constraints are taken into consideration, such as values of energy absorbed by the air-spring under different conditions; static axial internal force and maximum stroke of the shock- strut and other design requirements. The design variables are initial air pressures in the high pressure pneumatic chamber and the low pressure oleo-pneumatic chamber. For this optimal problem, the Griffith-Stewart sequential linear programming and the variables alternation method are employed to solve it. The convergence of the optimal process is verified. It shows from analytical results that there is a group of design variables, in spite of many groups satisfied to design conditions, which not only makes air-spring force minimum, but also adapt tine initial pressures to various absorbed energy requirements. The case studies indicate the given design variables using the optimal method are in good agreement with those which are obtained using trial method in present actual engineering.

Elastic local buckling behaviour of corroded cold-formed steel columns

Nie Biao,Xu Shanhua,Hu WeiCheng,Chen HuaPeng,Li AnBang,Zhang ZongXing 국제구조공학회 2023 Steel and Composite Structures, An International J Vol.48 No.1

Under the long-term effect of corrosive environment, many cold-formed steel (CFS) structures have serious corrosion problems. Corrosion leads to the change of surface morphology and the loss of section thickness, which results in the change of instability mode and failure mechanism of CFS structure. This paper mainly investigates the elastic local buckling behavior of corroded CFS columns. The surface morphology scanning test was carried out for eight CFS columns accelerated corrosion by the outdoor periodic spray test. The thin shell finite element (FE) eigen-buckling analysis was also carried out to reveal the influence of corrosion surface characteristics, corrosion depth, corrosion location and corrosion area on the elastic local buckling behaviour of the plates with four simply supported edges. The accuracy of the proposed formulas for calculating the elastic local buckling stress of the corroded plates and columns was assessed through extensive parameter studies. The results indicated that for the plates considering corrosion surface characteristics, the maximum deformation area of local buckling was located at the plates with the minimum average section area. For the plates with localized corrosion, the main buckling shape of the plates changed from one half-wave to two half-wave with the increase in corrosion area length. The elastic local buckling stress decreased gradually with the increase in corrosion area width and length. In addition, the elastic local buckling stress decreased slowly when corrosion area thickness was relatively large, and then tends to accelerate with the reduction in corrosion area thickness. The distance from the corrosion area to the transverse and longitudinal centerline of the plate had little effect on the elastic local buckling stress. Finally, the calculation formula of the elastic local buckling stress of the corroded plates and CFS columns was proposed.

SrAl₁₂O₁₉:Pr³⁺ nanodisks and nanoplates: New processing technique and photon cascade emission

Nie, Zhaogang,Zhang, Jiahua,Zhang, Xia,Lim, Ki-Soo Cambridge University Press (Materials Research Soc 2009 Journal of materials research Vol.24 No.5

<P>High-quality SrAl12O19:Pr<SUP>3+</SUP> nanodisks and nanoplates were fabricated via a new processing technique based on a modified polymer steric entrapment method. Serious agglomeration and large particle size distribution of final products, which usually occurred in the conventional method, were eliminated completely. The effects of new synthetic processes on the morphology, crystallization, and yield of products and the relevant mechanisms were discussed. As far as we know, SrAl12O19:Pr<SUP>3+</SUP> nanodisks with mean diameter ∼60 nm and thickness between 5 and 10 nm were successfully synthesized for the first time by this low-cost technique. The new synthetic method may provide a general route to synthesize other refractory mixed-oxide nanocrystals. Photon cascade emission involving transitions <SUP>1</SUP>S0-<SUP>1</SUP>I6 followed by <SUP>3</SUP>P0-<SUP>3</SUP>H4 in SrAl12O19:1% Pr<SUP>3+</SUP> nanodisks was investigated. Size-effect-induced blue shift of the 4<I>f</I>5<I>d</I> states of Pr<SUP>3+</SUP> was observed in SrAl12O19:1% Pr<SUP>3+</SUP> nanodisks, in which the quantum efficiency was preserved, as in the bulk counterparts.</P>

Dynamic Behavior of Aircraft Landing Gear with Typical Dual-Chamber Shock-Absorbers

Nie Hong,임경호(K. H. Lim),황재혁(J. H. Hwang),김두만(D. M. Kim) 한국항공우주학회 1997 韓國航空宇宙學會誌 Vol.25 No.4

Identification of Aerodynamic Model CFD-Based for Gust Response Analysis

Nie, Xueyuan,Yang, Guowei The Society for Aerospace System Engineering 2015 International Journal of Aerospace System Engineer Vol.2 No.1

Aeroelastic gust response analysis plays an important role in design of aircrafts. For gust response analysis, frequency domain aerodynamics method has been typically used with generalized aerodynamic influence coefficient matrices at various reduced frequencies. However, it cannot be applied to the aeroservoelastic analysis, such as gust alleviation control. Time-domain state space (SS) models must be built. It attacks little attention that gust response analysis relies on continuous gust time-domain input signal in terms of its PSD function. The aim the current study is to provide a reduced-order modeling (ROM) method based on CFD to model gust responses for continuous gust responses for continuou gust inputs in time domain. The paper analyzed the gust response of AGARD445.6 wing subjected to the Dryden gust with ROMs and compared the difference between the rigid structure and elastic one. The results demonstrate that structure elastic effect effect should be considered in the design of aircraft.

Theoretical Demonstration of the Ionic Barristor

Nie, Yifan,Hong, Suklyun,Wallace, Robert M.,Cho, Kyeongjae American Chemical Society 2016 Nano letters Vol.16 No.3

<P>In this Letter, we use first-principles simulations to demonstrate the absence of Fermi-level pinning when graphene is in contact with transition metal dichalcogenides (TMDs). We find that formation of either an ohmic or Schottky contact is possible. Then we show that, due to the shallow density of states around its Fermi level, the work function of graphene can be tuned by ion adsorption. Finally we combine work function tuning of graphene and an ideal contact between graphene and TMDs to propose an ionic barristor design that can tune the work function of graphene with a much wider margin than current barristor designs, achieving a dynamic switching among p-type ohmic contact, Schottky contact, and n-type ohmic contact in one device.</P>

Dynamic Fatigue Reliability Prediction Approach of Fuel Cell Vehicle Based on Usage Scenario

Nie Zhenyu,Liang Rongliang,Wu Zhen,Guo Ting,Zhang Xiaohui 한국자동차공학회 2024 International journal of automotive technology Vol.25 No.1

Fuel cell vehicles (FCVs) are an important direction for sustainable development of the automobile industry in the future. Still, the reliability and durability of FCVs are key technical problems aff ecting marketization. This study focused on fatigue reliability of FCVs under complex driving conditions. A dynamic analysis approach for fatigue reliability is proposed based on a dynamic Bayesian network and fracture mechanics (DBN-FM). According to the load spectrum data collected by an FCV on typical roads, a DBN model for the fatigue reliability of an FCV was established considering the randomness of variables in crack propagation. The practical application of the developed model is demonstrated through a case study. The results show that the DBN-FM approach can be used to predict the failure probability of FCVs under diff erent driving distances. In addition, the weak parts of the FCV were identifi ed, which provided theoretical guidance for its inspection and maintenance.

중국의 도시고형폐기물매립지의 침출수 관리 현황 및 문제점

( Nie Yongfeng ),( Liu Jianguo ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2

경제발달, 도시화와 생활수준 향상에 따라 중국의 일반폐기물이 계속적으로 증가하고 있다. 일반 폐기물은 1980년에 3,132만톤에서 1996년 10,825만톤으로 증가하였고, 2000년이 되어서는 12~14 억톤으로 연평균 8.1%의 증가율을 보였다. 일반폐기물의 낮은 재활용율과 발열량으로 인해서, 매립이 중국의 상황에 있어 가장 적절한 처리기술이다. 최근 10년간, 많은 일반폐기물 매립지가 건설되었다. 이로서 일반폐기물의 불법투기와 단순매립은 점차적으로 사라지고 있다. 매립지 설계, 건설, 관리는 위생매립지 수준을 만족시키기 위해서 끊임 없이 개선되었다. 침출수 발생에 의한 환경오염이 매립지에 있어서 주요한 환경문제로, 침출수 발생 제어가 매립지의 설계, 건설, 운영에 있어서 우선적으로 고려되어야 한다. 일반폐기물매립지 침출수는 많은 물질을 함유한 일종의 고농도의 폐수이다. 침출수 발생과 그 성분의 강한 변동은 매립지 침출수 처리를 여전 히 풀지 못한 숙제로 남게 하였다. 심지어 침줄수가 생물학적 호기-혐기 기술에 의해서 처리된다고 하여도 방류기준을 충족시키지 못한다. 수질에 관심을 가지는 한, 경제적이고 실행 가능한 기술인 침 출수 재순환도 작은 양의 침출수가 발생하는 매립지에 있어서만 효과적이다. 다량의 침출수 발생은 중국에서 매립지 설계, 건설, 운영에 있어서 고려되어야만 하는 중요한 문 제이다. 침출수 처리시설의 건설, 운영에 필요한 재정의 부족으로 많은 매립지는 적절한 침출수 처리 시스템을 갖추지 못하고 있다. 게다가 고농도의 침출수는 처리하기 어렵기 때문에, 처리시설을 거친 침출수 역시 국가 혹은 지역의 기준을 거의 충족시키지 못한다. 효과적인 배수시스템을 갖추지 못한 몇몇 매립지는, 단지 작은 양의 침출수만을 수집한다. 따라서 많은 양의 침출수가 토양에 침투된다. 기술적, 경제적, 환경적인 면을 고려한다면, 침출수 제어는 오염원 감량 측면에서 이루어져야 한다. 이들을 만족시키기 위한 경제적이고 효과적인 기술들, 예로 침출수 재순환에 대해서 연구하였다.