• Title/Summary/Keyword: Design Test Evaluation

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An Evaluation of ACI 349 Code for Shear Design of CIP Anchor (직매형 앵커기초의 전단설계를 위한 ACI 349 Code의 평가)

  • Jang Jung-Bum;Hwang Kyeong-Min;Suh Yong-Pyo
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2005.04a
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    • pp.464-470
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    • 2005
  • The numerical analysis is carried out to identify the influence of design factors to shear capacity of cast-in-place (CIP) anchor in ACI 349 Code that is available for the design of fastening system at Nuclear Power Plant (NPP) in this study. The MASA program is used to develop the numerical analysis model and the developed numerical analysis model is verified on a basis of the various test data of CIP anchor. Both $l/d_o$ and $c_1/l$ we considered as design factors. As a result, the variation of $l/d_o$ has no influence on the shear capacity of CIP anchor but $c_1/l$ has a large influence on the shear capacity of CIP anchor, Therefore, it is proved that ACI 349 Code may give a non-conservative results compared with real shear capacity of CIP anchor according to $c_1/l$.

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Crack Growth Analysis and Crack Arrest Design of Stiffened Panels(III) - Experimental Evaluation of Crack Arrest Design Chart (보강판의 균열거동해석과 Crack Arrest 설계(III) - Crack Arrest Design 차트의 실험평가)

  • Rhee, Eui-Jong;Rhee, Hwan-Woo
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.5 no.2
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    • pp.42-48
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    • 2006
  • In order to assess the validity of fatigue crack arrest design charts obtained from our previous numerical approach to fatigue crack arrest condition, an extensive fatigue crack growth/arrest test was performed using CT-type integrally stiffened panels. The results are presented as fatigue crack growth rate and non-dimensional crack length relationship, and these are compared with numerically simulated crack growth rates. The measured values of da/dN at the moment of fatigue crack arrest occurred in stiffened panels are good agreement with those numerically simulated crack growth rates.

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An Environmental Design Study for selecting Conductor Configurations of the next Extra High Voltage Transmission Line (차기 초고압 송전선로의 도체방식 선정을 위한 환경설계 연구)

  • Park, D.W.;Ahn, H.S.;Yang, K.H.;Kim, J.B.;Chung, S.J.;Min, S.W.
    • Proceedings of the KIEE Conference
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    • 1989.11a
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    • pp.197-200
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    • 1989
  • The corona interference of extra high voltage (EHV) transmission lines has to be considered as an important design factor for establishing an electrical environmental countermeasure at a basic line design stage. This paper describes the conductor selection procedure through both corona performance test result in corona cage and its evaluation by the design criterion. It is known that three conductor configurations including $6{\times}810mm^2$ (spacing: 40 cm) are the suitable conductor bundle for the environmental preservation around both 2-circuits and 1-circuit T/L.

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Flexural analysis of steel fibre-reinforced concrete members

  • Chalioris, Constantin E.;Panagiotopoulos, Thomas A.
    • Computers and Concrete
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    • v.22 no.1
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    • pp.11-25
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    • 2018
  • A numerical approach for the evaluation of the flexural response of Steel Fibrous Concrete (SFC) cross-sections with arbitrary geometry, with or without conventional steel longitudinal reinforcing bars is proposed. Resisting bending moment versus curvature curves are calculated using verified non-linear constitutive stress-strain relationships for the SFC under compression and tension which include post-peak and post-cracking softening parts. A new compressive stress-strain model for SFC is employed that has been derived from test data of 125 stress-strain curves and 257 strength values providing the overall compressive behaviour of various SFC mixtures. The proposed sectional analysis is verified using existing experimental data of 42 SFC beams, and it predicts the flexural capacity and the curvature ductility of SFC members reasonably well. The developed approach also provides rational and more accurate compressive and tensile stress-strain curves along with bending moment versus curvature curves with regards to the predictions of relevant existing models.

A Study on Composition Factor and Special Qualities of Design about Korean Clothing Image (한국적 의복이미지의 구성요인과 디자인 특성)

  • 김희정;이경희
    • Journal of the Korean Society of Clothing and Textiles
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    • v.21 no.3
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    • pp.589-599
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    • 1997
  • The purpose of this study was to investigate compostion factor and special qualities of design about Korean clothing image. The 72 samples were obtained from domestic fashion magazines. The questionnaire, which was composed 23 semantic diffrential bi-polar scales, was distributed to 50 female students majoring in Clothing and Textiles. The data were analyzed through factor analysis, anova, scheffe's test, clust analysis. The results were as follows; 1) Through factor analysis about Korean clothing image, 5 factors were identified; elegance, simplicity, femininity, tradition, looseness. 2) By cluster analysis, 3 clusters were determined according to Korean clothing image. Special qualities of design about Korean clothing image showed that there were lots of H silhouette in clothing form, related harmony in color harmony, somewhat rough and crude in texture and simple design in decoration. Top was more or less fit and bottom was found somewhat exaggerated tendency in fitness. 3) As a result of the visual evaluation about Korean clothing image, there were significant differences in all factors.

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A Study on the Earth-Volume Determination in Road Design by D.T.M. (수치지형 모델을 이용한 도로의 토공양산정에 관한 연구)

  • 조영호
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.7 no.2
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    • pp.7-19
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    • 1989
  • The developments in remote-sensing, digital mapping, and automation of land information system have provided the impetus for the increasing use of Digital Terrain Models in engineering planing and design. In this paper, an evaluation is made on tile method of accurate earth-volume determination in computerized road design using by Digital Terrain Models. The result of numerical test shows that the $BL_{in}$-1 Model is the most efficient model in Earth-volume determination of road design.

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Visual Evaluation of Design Variations in Power Shoulder Jacket (파워 숄더 재킷의 디자인변화에 따른 시각적 평가)

  • Kim, Jeong-Mee;Lee, Jung-Soon
    • Journal of Fashion Business
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    • v.15 no.1
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    • pp.80-91
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    • 2011
  • The purpose of this study is to evaluate the differences of visual effects and visual images by variations in shoulder angle and shoulder width of power shoulder jacket. The stimuli are 5 samples: One control group, 2 variations of the angle of shoulder line and 2 variations of the width of shoulder line. The data has been obtained from 87 fashion design majors. The data has been analyzed by Factor Analysis, Anova, Scheffe's Test and the Correlation Analysis. The results of the study are as follows: The visual images by the angle and the width of shoulder line of power shoulder jacket are composed of 4 factors : attention, stiffness and softness, masculinity, and trendiness. Among these factors, attention factor is estimated by the most important factor. The visual effects by the angle and the width of shoulder line of power shoulder jacket are composed of 3 factors : whole silhouette, neck and arm figure, upper body figure. In these factors, the whole silhouette is estimated by the most important factor. The power shoulder jacket with extreme changes in shoulder angle has double images: it looks trendy and classy but also gives an awkward image. In case of changes in shoulder width, the visual evaluation shows big differences with the degree of expansion. The visual evaluation with variation in angle has stronger image and effect than that in width. The power shoulder jacket trend itself is also evaluated that variation in angle reflects the trend better than that in width.

The Male Perceiver's Image Evaluation and Preference of Women's Hairstyle (여성 헤어스타일에 대한 남성 지각자의 이미지 평가 및 선호도 연구)

  • Lee, Myoung-Hee
    • Journal of the Korea Fashion and Costume Design Association
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    • v.9 no.2
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    • pp.127-138
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    • 2007
  • The purpose of this study was to investigate the male perceiver's image evaluation on women's hairstyle and hair color, and to disclose the preference of the hairstyle and hair color. The experimental design was $2{\times}3{\times}3$ (hair $wave{\times}hair\;length{\times}hair$ color) factorial design by 3 independent variables. The stimuli were 18 women's upper body photographs which were output by computer simulation. The hairstyles were straight hair and wavy hair, and the types of the hair length were long, medium, and short hair. The hair colors were black, dark brown, and bright brown. Subjects were 154 men living in Seoul. The data were analyzed by using factor analysis, Cronbach's ${\alpha}$ reliability coefficient, three-way ANOVA, one-way ANOVA, and Duncan's multiple range test. The results of this study were as follows. Four image dimensions were derived by factor analysis. These were individuality, elegance, potency, and attractiveness. Male perceivers evaluated the women's long hairstyles to be more elegant than the short and the medium length hairs. The women's short hairstyles were perceived more potent than the long and the medium length hairs. The straight hairs were evaluated more elegant than the permed hairs, and the permed hairs were evaluated higher in individuality and attractiveness. The black hairs were perceived lowest in attractiveness, and the bright colors were perceived low in elegance. Male preferred the long brown straight hair first. They liked women's long hairs better than the short and the medium length hairs. Teenaged males preferred various hair colors more than those in their 20's and 30's did.

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A Study on the Visual Evaluation of Changes in the Width of Pleats of the Accordion Pleats Skirt (아코디언 플리츠 스커트의 주름너비 변화에 따른 시각적 평가)

  • Lee, Jung-Soon
    • Journal of the Korea Fashion and Costume Design Association
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    • v.10 no.3
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    • pp.163-171
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    • 2008
  • This article aims to evaluate the visual effects and images according to the changes in the width of pleats of accordion pleats skirt. I altered the width of the pleats to seven categories in changes of 0.5cm, 0.7cm, l.0cm, 1.3cm, 2.0cm, 2.5cm and 3.0cm. For the visual evaluation, seven stimuli had been placed in mannequins, and had been estimated by experts in fashion design. For the visual evaluation according to changes in the width of pleats of according pleats skirt. I used 11 pairs of items to find their visual effects, and 17 pairs of adjectives to measure the visual images. Those stimuli and adjectives had been randomly given to evaluators and had been evaluated by the seven-point Likert type scale. The data have been analyzed by frequency, factor analysis, ANOVA, Scheffes test and correlation analysis. According to factor analysis of the visual effects of the accordion pleats skirt, the result was classified into three factors: the verticality of the lower body, flexuosity of the lower body, and shape of the abdomen. According to factor analysis of the visual image of the accordion pleats skirt, the result was classified into the following three factors: activity, attraction and neatness. In visual effects, the verticality of the lower body had been assessed as the most important factor of all. The visual effect was positive when the width of pleats had been narrowed. In visual image, activity had been assessed as the most important factor. In the case of accordion pleats skirt, as the width of pleats became wider, it had a stronger image in being active and casual.

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Study and Evaluation of Tourism Websites based on User Perspective

  • Shrestha, Deepanjal;Wenan, Tan;Rajkarnikar, Neesha;Shrestha, Deepmala;Jeong, Seung Ryul
    • Journal of Internet Computing and Services
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    • v.22 no.4
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    • pp.65-82
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    • 2021
  • A well-designed website is mandatory for good marketing and proper tourism business. This research considers Nepal as a domain of study and specifically explores welcomenepal.com, the official tourism portal as a reference for the study. The work is based on the study of the existing literature, user-survey, and technical testing of the website using open-source testing tools to identify user perspective, design issues, website architecture and design quality of the tourism website. A population size of 400 respondents, which consist of both domestic and international tourist, are considered for the survey. Data is received from 360 respondents, which is analyzed using statistical tests like Cronbach's alpha, Pearson's correlation, cross-tabulations, bars charts and graphs to draw inferences and consclusion. The software-based test results serve as another important parameter for the evaluation of the current official website. This study brings out core needs of the tourist in terms of expectations from a tourism website and access technical quality of the current portal to provide necessary feedback and suggestions. The government officials, business houses, and web designers can utilize this work as a knowledge base to build tourism websites, which are user-centric. Further, the work is specifically important for Nepal government and tourism officials to identify shortcomings in their current website and make improvements for better design and user adaptability in future.