• Title/Summary/Keyword: expected dimensions

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Some Device Design Considerations to Enhance the Performance of DG-MOSFETs

  • Mohapatra, S.K.;Pradhan, K.P.;Sahu, P.K.
    • Transactions on Electrical and Electronic Materials
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    • v.14 no.6
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    • pp.291-294
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    • 2013
  • When subjected to a change in dimensions, the device performance decreases. Multi-gate SOI devices, viz. the Double Gate MOSFET (DG-MOSFET), are expected to make inroads into integrated circuit applications previously dominated exclusively by planar MOSFETs. The primary focus of attention is how channel engineering (i.e. Graded Channel (GC)) and gate engineering (i.e. Dual Insulator (DI)) as gate oxide) creates an effect on the device performance, specifically, leakage current ($I_{off}$), on current ($I_{on}$), and DIBL. This study examines the performance of the devices, by virtue of a simulation analysis, in conjunction with N-channel DG-MOSFETs. The important parameters for improvement in circuit speed and power consumption are discussed. From the analysis, DG-DI MOSFET is the most suitable candidate for high speed switching application, simultaneously providing better performance as an amplifier.

Design of aerodynamic stabilizing cables for a cable-stayed bridge during construction

  • Choi, Sung-Won;Kim, Ho-Kyung
    • Wind and Structures
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    • v.11 no.5
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    • pp.391-411
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    • 2008
  • A design procedure of stabilizing cable is proposed using buffeting analysis to stabilize the seesaw-like motion of the free cantilevered structure of a cable-stayed bridge during its construction. The bridge examined is a composite cable-stayed bridge having a main span length of 500 m. Based on the buffeting analysis, the stress in bare structure exceeded the allowable limit and a set of stabilizing cable was planned to mitigate the responses. The most efficient positions of the hold-down stabilizing cables were numerically investigated by means of an FE-based buffeting analysis and the required dimensions and pretension of the stabilizing cables were also calculated. The proposed stabilizing measure would be expected to secure the aerodynamic safety of a cantilevered structure under construction with considerable mitigation of buffeting responses.

Influences of Consumer Perceived Risks and Valence of Word of Mouth Information on Purchase Intention in Social Commerce (소셜 커머스의 소비자 지각된 위험과 구전 방향성이 구매의도에 미치는 영향)

  • Shim, E Seok;Rhee, Hyong Jae
    • Journal of Information Technology Services
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    • v.12 no.3
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    • pp.73-93
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    • 2013
  • This paper is a research on perceived risk of social commerce which has influence on purchase intention. This study uses a 3-dimension concept of perceived risk and then, deals with influencing a purchase intention. In addition, to search other influential variable to purchase intention, this study adds a variable with expected moderating effect. This study proposes several hypothesis and processes an experiment to test and attest these hypothesis. This study attempts to analyze the effect that perceived risk in social commerce has on purchase intention. By the results of data analysis, all dimensions of perceived risk are found to have significant negative effects on purchase intention. In addition, this study proves moderating roles of valence of WOM Information on purchase intention. Additional managerial implications are also discussed.

Consumer's Response for Health Friendly Planning Features of Smart Home (건강친화 지능형주택 계획요소에 대한 소비자 반응 연구)

  • Lee, Sunmin;Lee, Yeunsook;Ahn, Changhoun
    • KIEAE Journal
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    • v.9 no.2
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    • pp.27-36
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    • 2009
  • Due to rapid advances in science and technology and peoples life value, multi-dimensional functionality of the house has been possible and demanded. Among them, intellectual function and health support function appeared prominent and the former can support the later. The purpose of this study was to delineate health support planning features for smart home. Thirty six planning elements were extracted for initial pool for survey to find out what consumers demanded. Two hundred and nine data were collected through the web-survey. Important planning features were identified in relation to three different health dimensions that is physical/physiological, psychological, and social health. Generally consumers' responses were positive for all features. Major health friendly features highly demanded by consumers were found gas detect system, security system, and a call alarm system. The result of this study is expected to be used as a basic reference to develop strategies for smart home and to grasp current housing culture.

Reliagility Analysis of Tension Leg Platforms for Severe Storm Waves (대규모 폭풍에 대한 Tension Leg Platform의 신뢰도해석)

  • 박우선;윤정방
    • Journal of Ocean Engineering and Technology
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    • v.5 no.1
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    • pp.16-24
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    • 1991
  • This paper presents a method of the reliability analysis for a tension leg platform(TLP)in severe storm waves by using the first passage concept of the random tensile stress in the tendons. In the present method, two failure conditions are considered ;i.e., the exceedance of the ultimate tensile capacity and the occurrence of the negative tension. In order to consider the correlation effects between the failure events for each corner resulted from the rupture of all tencons at one corner, a new system limit state for a rectangular shaped TLP is developed, which is defined in terms of the TLP motions in the vertical plane ;i.e., heave, roll, and pitch. To illustrate the validity of the present method, the numerical analysis is carried out for two TLP's with different structural dimensions. Then, the results are compared with those by other methods.

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Qualitative Study on Organizational Culture of an Academic Library: A Case Study of New Millennium Library (대학도서관 조직문화에 대한 질적 연구 - 새천년 도서관 사례를 중심으로 -)

  • Lee, So-Yeon
    • Journal of the Korean Society for Library and Information Science
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    • v.34 no.4
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    • pp.123-142
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    • 2000
  • The purpose of this study is to explore the culture of an academic library, fictitiously titled the New Millennium Library(NML). The study employed various research methods: pilot interviews with academic library workers, field observation at NML, a value survey conducted among NML workers and structured interviews with selected volunteers fromthe pool of survey respondents. Information gathered on the NML's culture is presented in a chart of five cultural dimensions and three organizational layers. The study is expected to inform library culture research as well as organizational culture research through a utilization of mixed methodology.

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Development of Workplace Spirituality Scale for Early Childhood Teacher (유아교사의 일터영성 척도 개발)

  • Lim, Jeong-Su;Sim, Eun-Joo;Lee, Kyeong-Hwa
    • Journal of Fisheries and Marine Sciences Education
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    • v.26 no.4
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    • pp.717-735
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    • 2014
  • This study aims to develop and validate the WSSECT (Workplace Spirituality Scale for Early Childhood Teacher) through literature review and statistical tests. The initial version with 40 items based on two dimensions of spirituality in individual and professional level was constructed. Then, it was revised twice for improving reliability and validity. Finally the WSSECT was constructed of 4 factors - i.e. 'calling for ECE teacher job', 'meaning for life', 'membership in educational community' and 'awareness of inner life' - including the 23 items. The scale will be expected to identify workplace spirituality of early childhood teacher.

The Effect of Corporate Social Responsibility on the Corporate Image and Purchase Intention (패션기업의 사회적 책임활동이 기업이미지와 구매인도에 미치는 영향)

  • Jeon, Ji-Hyun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.35 no.5
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    • pp.547-560
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    • 2011
  • This study examines the effect of corporate social responsibility on the corporate image and purchase intention. The data were obtained from 320 male and female 'C' university students in Daejeon in October of 2010. The data were analyzed by descriptive statistics, factor analysis, reliability analysis, regression analysis using the SPSS-WIN 15.0 and AMOS 7.0 program. The results were as follows. First, corporate social responsibility consists of five dimensions: community/cultural service, social contribution, environmental protection, consumer protection/legal responsibility, and economic responsibility. Purchase intention consists of comparative purchase and priority purchase. Second, social contribution, consumer protection/legal responsibility, and economic responsibility affect the corporate image. Third, social contribution and consumer protection/legal responsibility also affect purchase intention. Forth, the corporate image affects purchase intention. The findings of this study are expected to be used as basic data for establishing differentiated marketing strategies in fashion company.

HIGH-ENERGY SOLAR PARTICLE EVENTS IN THREE DIMENSIONS

  • Kocharov, Leon
    • The Bulletin of The Korean Astronomical Society
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    • v.35 no.2
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    • pp.45.1-45.1
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    • 2010
  • Using SOHO particle and EUV detection and radio spectrograms from both ground-based and spaceborne instruments, we have studied the first phase of major solar energetic particle (SEP) events associated with wide and fast coronal mass ejections (CMEs) centered at different solar longitudes. Observations support the idea that acceleration of SEPs starts in the helium-rich plasma of the eruption's core well behind the CME leading edge, in association with coronal shocks and magnetic reconnection caused by the CME liftoff; and those "coronal" components dominate during the first ~1.5 hour of the SEP event, not yet being hidden by the CME-bow shock in solar wind. At magnetic connection to the eruption's periphery, onset of SEP emission is delayed for a time of the lateral expansion that is visualized by global coronal (EIT) wave. The first, "coronal" phase of SEP acceleration is followed by a second phase associated with CME-driven shock wave in solar wind, which accelerates high-energy ions from a helium-poor particle population until the interplanetary shock slows down to below 1000 km/s. Based on these and other SOHO observations, we discuss what findings can be expected from STEREO in the SOHO era perspective.

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Performance Evaluation of Private R&D Projects using BSC/DEA (BSC/DEA를 활용한 기업 연구개발 프로젝트 성과평가)

  • Jeon, IkJin;Lee, Hakyeon
    • Korean Management Science Review
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    • v.34 no.2
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    • pp.67-83
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    • 2017
  • This paper proposes a R&D project performance measurement model for private firms combining balanced scorecard (BSC) and data envelopment analysis (DEA). The efficiency of R&D projects is measured in terms of each of the three perspectives of BSC by using DEA : the internal process perspective (DEA-P), the customer perspective (DEA-C), and the financial perspective (DEA-F). The performance indicators of the three perspectives of BSC are considered as outputs of the corresponding DEA models. To provide strategic implications for R&D planning, we also propose the R&D project performance matrices composed of two different types of efficiency dimensions. The proposed model is expected to be fruitfully utilized for R&D performance measurement of private firms.