• 제목/요약/키워드: Common elements

검색결과 1,003건 처리시간 0.029초

패션 디자인 프로세스와 스토리텔링의 관계 정립에 관한 연구 (A Study on Establishing Relationship between Fashion Design Process and Storytelling)

  • 성유정;권기영
    • 한국의류산업학회지
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    • 제11권2호
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    • pp.210-218
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    • 2009
  • The Purpose of this study is to demonstrate Storytelling as an effective device for Fashion Design by establishing relationship between Fashion Design Process and Storytelling. Through researching a social background and a concept of storytelling, found that story used interactively is a powerful tool for attention, understanding and change in both individuals and communities. Analysed the elements and the structure of storytelling and Fashion Design Process, by researching preceding researches. Therefore, we proposed a new four elements -text factor, visual factor, audio factor and virtual factor- and four steps (1)exploring stories, (2)planning a story, (3)building the story, (4)do storytelling- of storytelling and four steps-(1)gathering and analysing informations, (2)building a concept, (3)planning and developing a design, (4)do evaluation and make decision- of fashion design process. Through comparative analysis, we found a closeness between two structures, a use of common factors and also found characteristics to be considered in each stage. In the first stage, we found text, visual and audio factor as common factors. In the second stage, we suggested text and visual factor as common factors and also suggested clarity, realism and probability as characteristics. In the third stage, we found text, visual and virtual factor and also found dynamism, immersion and continuity. In the last stage, we suggested text, visual, virtual and audio factor and also suggested presence and interactivity as characteristics.

공통 모드 노이즈를 흡수하는 소형 공통 모드 필터 설계 (Design of Compact Common Mode Noise Absorption Filter)

  • 정현종;정진우;임영석
    • 한국전자파학회논문지
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    • 제29권12호
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    • pp.963-968
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    • 2018
  • 본 논문에서는 수동소자를 이용한 소형 공통 모드 필터를 설계 및 제작하였다. 주어진 주파수 응답을 갖는 공통 모드 필터를 설계하기 위해 차동 모드와 공통 모드에서 등가회로를 분석하였다. 제안된 구조는 기존의 ${\lambda}/4$ 공진기로 구현된 필터에 비해 60 %의 크기가 감소하였다. 또한, 제작된 공통 모드 필터는 ${\mid}S_{dd11}{\mid}$, ${\mid}S_{cc21}{\mid}$, ${\mid}S_{cc11}{\mid}$ < -10 dB를 만족하는 27.5 %의 공통 모드 흡수 대역폭에서 최대 1.2 dB의 차동 모드 삽입손실과 최소 78.2 %의 공통 모드 흡수 효율을 갖는다.

Development of super convergent Euler finite elements for the analysis of sandwich beams with soft core

  • Sudhakar, V;Gopalkrishnan, S;Vijayaraju, K
    • Structural Engineering and Mechanics
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    • 제65권6호
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    • pp.657-678
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    • 2018
  • Sandwich structures are well known for their use in aircraft, naval and automobile industries due to their high strength resistance with light weight and high energy absorption capability. Sandwich beams with soft core are very common and simple structures that are employed in day to day general use appliances. Modeling and analysis of sandwich structures is not straight forward due to the interactions between core and face sheets. In this paper, formulation of Super Convergent finite elements for analysis of the sandwich beams with soft core based on Euler Bernoulli beam theory are presented. Two elements, Eul4d with 4 degrees of freedom assuming rigid core in transverse direction and Eul10d with 10 degrees of freedom assuming the flexible core were developed are presented. The formulation considers the top, bottom face sheets and core as separate entities and are coupled by beam kinematics. The performance of these elements are validated by results available in the published literature. Number of studies are performed using the formulated elements in static, free vibration and wave propagation analysis involving various boundary and loading conditions. The paper highlights the advantages of the elements developed over the traditional elements for modeling of sandwich beams and, in particular wave propagation analysis.

서울지역의 PM10 중 미량원소의 특성 평가 (Trace Elements Characterization of PM10 in Seoul Area)

  • 신은상;최민규;영선우;정용삼
    • 한국대기환경학회지
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    • 제18권5호
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    • pp.363-372
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    • 2002
  • PM$_{10}$ aerosols were collected using low volume air sampler every month intervals from September 1992 to August 1991 in Seoul. These samples were analyzed for 20 trace elements (Al, As, Ba, Br, Ca, Cl, Co, Cr, Fe, K, Mn, Na, Ni, Pb, Sc, Se, Si, Ti, V and Zn) by INAA (instrumental neutron activation analysis), XRF (x-ray fuorescence spectrometer), and ICP (inductively coupled plasma). PM$_{10}$ mass concentrations higher than 70 $\mu$g/m$^3$ were 32% of 60 samples and had significantly higher concentrations in spring and winter than in summer and fall (p-value<0.001). The elements of As, Br, Cl, Ni, Pb, Se, V, and Zn are enriched by factors of 20 to 2,000 relative to their natural abundance in crustal soil. To further identify common sources of pollution-related trace elements, factor analysis was applied to the trace elements concentration data. Major sources that contribute to the atmospheric loading of these elements were found to include fossil fuel combustion, automobile and waste incineration (33.2%), metal processing industry (18.2%), and soil(29.8%).8%).

국내 기관 리포지토리에서 DSpace 메타데이터 요소의 활용 현황 (The Uses of DSpace Metadata Elements in the Institutional Repository)

  • 이은주
    • 한국도서관정보학회지
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    • 제47권4호
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    • pp.465-487
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    • 2016
  • 이 연구는 DSpace를 기반으로 구축한 기관 리포지토리 메타데이터 요소의 활용 현황을 살펴보고 향후 DSpace를 사용하여 기관 리포지토리를 구축하고자 하는 기관을 위한 메타데이터의 구축 방향과 활용 전략을 제시하는 것을 목적으로 삼았다. 이를 위해, 이 연구에서는 (1) DSpace의 개발 배경과 특징, 메타데이터 요소와 활용 방법에 대해 살펴본 후, (2) DSpace를 기반으로 한 국내 기관 리포지토리 중 사례 기관을 선정하여 모든 기관에서 공통적으로 활용되는 메타데이터 요소는 무엇이며, 개별 기관에서 추가 또는 확장하여 사용하는 요소는 무엇인지를 구분하여 분석하였다. 이에 더해, (3) 입력된 메타데이터가 검색에 어떻게 활용되고 있는지 검색 방식, 검색 요소 및 디스플레이 요소 등으로 나누어 검토한 후, 마지막으로, (4) 연구결과를 토대로 기관 리포지토리에서 메타데이터 구축시 기관이 고려해야 할 과제와 추진전략에 대해 논의하였다 이러한 논의를 수행함에 있어 필요한 데이터는 문헌연구와 사례분석을 통해 수집하였다.

현대 종합병원 공용공간구성의 사용자중심적 실내디자인 특성 연구 - 해외사례를 중심으로 - (A Study on Characteristics of User-Focused Interior Design in Common Space Composition of Contemporary General Hospitals - Focused on Overseas Case -)

  • 김정아
    • 한국실내디자인학회논문집
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    • 제23권5호
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    • pp.174-182
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    • 2014
  • As patients prefer large scale hospitals recently, the interior design of general hospitals are conspicuously improving. In the past, most patients visit hospitals to get treatment on diseases; however, recently patients visiting hospitals for the early prevention of disease is rapidly increasing. Accordingly, contemporary hospitals should meet the wish of patients who want to get medical service in more clean and comfortable environment. The existing studies on hospital interior design were mostly limited on analyzing the functionality of each space; however, studies on the interior design of common use space, which is open to all hospital users, are required now. Accordingly, this study classified the common use space in contemporary general hospitals into lobby space, corridor space, waiting space and resting space. The interior design characteristics of each space were classified into; connectivity with external environment, level change by void, introduction of natural elements, dynamics of space and variety of color. Then a case analysis was done by selecting 12 common use spaces in overseas general hospitals. According to the analysis result, the interior design characteristics were more conspicuous in the sequence of corridor space, lobby space, resting space and waiting space. The interior design elements such as overall space arrangement and material-finishing were relatively acceptable; however, the aspect of a user's environmental behavior, in other words, the psychological aspect, which can lead a patient to natural healing, was relatively insufficient. It is believed that an in-depth interior design focusing on practical users would enable various spatial behaviors. It is hoped that this study would be a help to the interior design of domestic general hospitals as a guideline.

Reducing Common-Mode Voltage of Three-Phase VSIs using the Predictive Current Control Method based on Reference Voltage

  • Mun, Sung-ki;Kwak, Sangshin
    • Journal of Power Electronics
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    • 제15권3호
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    • pp.712-720
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    • 2015
  • A model predictive current control (MPCC) method that does not employ a cost function is proposed. The MPCC method can decrease common-mode voltages in loads fed by three-phase voltage-source inverters. Only non-zero-voltage vectors are considered as finite control elements to regulate load currents and decrease common-mode voltages. Furthermore, the three-phase future reference voltage vector is calculated on the basis of an inverse dynamics model, and the location of the one-step future voltage vector is determined at every sampling period. Given this location, a non-zero optimal future voltage vector is directly determined without repeatedly calculating the cost values obtained by each voltage vector through a cost function. Without utilizing the zero-voltage vectors, the proposed MPCC method can restrict the common-mode voltage within ± Vdc/6, whereas the common-mode voltages of the conventional MPCC method vary within ± Vdc/2. The performance of the proposed method with the reduced common-mode voltage and no cost function is evaluated in terms of the total harmonic distortions and current errors of the load currents. Simulation and experimental results are presented to verify the effectiveness of the proposed method operated without a cost function, which can reduce the common-mode voltage.

구매심리과정(AIDMA)모델을 적용한 식음공간의 실내디자인요소 분석 (Analysis of Interior Design Elements in Food and Beverage Applying the Psychological Process of Purchasing(AIDMA) Model)

  • 이미진;한정원
    • 한국실내디자인학회논문집
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    • 제21권2호
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    • pp.112-122
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    • 2012
  • The purpose of this study is to provide fundamental data that can improve added value of commercial space strategically using the identification of relationship between the process of consumers' purchasing psychology (AIDMA : Attention, Interest, Desire, Memory, Action) and elements of interior design. For this purpose, case study and survey were carried out on food and beverage spaces, where they were doing business for more than two years, were selected from the ones appeared in the interior journal "A." Based on the study, basic details including a ground plan, design summary and representative image were identified through preliminary research, and a researcher visited the target spaces and carried out a research and analysis on interior design elements. Three spaces among targets of the case study were selected to identify the relation between design elements and AIDMA items which consumers feel, and the survey was conducted on the customers of the selected food and beverage spaces. Results of the case study on the 18 food and beverage spaces showed that features of the each of AIDMA items in material and color elements were most well expressed. As a result of survey conducted on visitors of each food and beverage space, features of each item were expressed in overall design elements. In particular, space elements and color elements in "Space 1," space elements and lighting elements in "Space 2" and space elements, furniture & objet elements in "Space 3" were most well expressed in each space. There were slight differences depending on individual characteristics such as design concept, location and business operation of target food and beverage spaces but attributes of AIDMA items were remarkably recognized in common in the space elements.

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다른 형태를 가진 2소자 프린트 안테나의 방사특성에 관한 연구 (A Study of the Radiation Characteristics of Novel Printed Antenna Composed of Dual Elements with Different Shape)

  • 이채봉;김정현
    • 융합신호처리학회논문지
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    • 제9권2호
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    • pp.141-145
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    • 2008
  • 길이가 서로 다른 평행선로에 전류가 흐르는 경우, 커먼모드 전류(Common mode current)에 의한 전자파의 방사가 일어난다. 이러한 방사 원리를 이용하여 경량, 소형의 길이가 다른 2소자 선형 안테나가 제안되어 있다. 그러나 이 안테나의 경우 선으로 결합된 구조를 가지기 때문에 제작에 있어서 많은 제약이 따른다. 본 논문에서는 선형 안테나의 단점을 개선하고, 제작과 설계가 용이한 평면 기판에 길이가 다른 2소자 평면 안테나를 설계하고, 광대역(UWB: Ultra Wide Band)의 특성을 가지는 안테나를 설계하였다. 그리고 안테나 소자에 삼각형 패치 S, 노치, 테이퍼를 설계함으로서 방사특성은 다이 폴 안테나와 비슷하나 보다 넓은 대역에서 동작하는 안테나를 제작 할 수 있었다. 그 결과 비대역($VSWR{\le}2$)이 약 58%가 되었다.

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적응적 유한요소를 이용한 박스형 구조물의 좌굴해석 (Buckling Analysis of Box-typed Structures using Adaptive Finite Elements)

  • 송명관;김선훈
    • 한국전산구조공학회:학술대회논문집
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    • 한국전산구조공학회 2007년도 정기 학술대회 논문집
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    • pp.271-274
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    • 2007
  • The finite element linear buckling analysis of folded plate structures using adaptive h-refinement methods is presented in this paper. The variable-node flat shell element used in this study possesses the drilling D.O.F. which, in addition to improvement of the element behavior, permits an easy connection to other elements with six degrees of freedom per node. The Box-typed structures can be analyzed using these developed flat shell elements. By introducing the variable node elements some difficulties associated with connecting the different layer patterns, which are common in the adaptive h-refinement on quadrilateral mesh, can be overcome. To obtain better stress field for the error estimation, the super-convergent patch recovery is used. The convergent buckling modes and the critical loads associated with these modes can be obtained.

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