• Title/Summary/Keyword: design details

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Restoration of pre-damaged RC bridge columns using basalt FRP composites

  • Fahmy, Mohamed F.M.;Wu, Zhishen
    • Earthquakes and Structures
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    • v.14 no.5
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    • pp.379-388
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    • 2018
  • This study aims to identify the effect of both longitudinal reinforcement details and damage level on making a decision of repairing pre-damaged bridge columns using basalt fiber reinforced polymer (BFRP) jackets. Two RC bridge columns with improper details of the longitudinal and/or transverse reinforcement were tested under the effect of a constant axial load and increasing lateral cyclic loading. Test results showed that the lap-splice column exhibited an inferior performance where it showed rapid degradation of strength before achieving the theoretical strength and its deformation capacity was limited; however, quick restoration is possible through a suitable rehabilitation technique. On the other hand, expensive repair or even complete replacement could be the decision for the column with the confinement failure mode. After that, a rehabilitation technique using external BFRP jacket was adopted. Performance-based design details guaranteeing the enhancement in the inelastic performance of both damaged columns were addressed and defined. Test results of the repaired columns confirmed that both reparability and the required repairing time of damage structures are dependent on the reinforcement details at the plastic hinge zone. Furthermore, lap-splice of longitudinal reinforcement could be applied as a key design-tool controlling reparability and restorability of RC structures after massive actions.

A Study on Cleaning-ability Evaluation for Mechanical Components (기계부품의 세척성 평가에 관한 연구)

  • Jeon, Chang-Su
    • Journal of the Korean Society of Industry Convergence
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    • v.25 no.6_3
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    • pp.1315-1324
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    • 2022
  • The need for remanufacturing ships and various mechanical components continues to increase along with environmental problems. Research on remanufacturing is being carried out in various fields, but research on cleaning is quite insufficient. In particular, there is no research on the cleaning-ability of diverse mechanical components. In order to increase the life cycle of mechanical components, remanufacturing must be considered from the step of design. Particularly, it is also very important to evaluate the degree of easiness in cleaning to remove various pollutants generated by long-term use quickly as well as easily. In this study, the degree of easiness in cleaning is defined as cleaning-ability. In fact, remanufacturing components can be easily done only when cleaning-ability is set high from the step of design. The purpose of this study is to evaluate the cleaning-ability of ships and various mechanical components. The details of easiness in cleaning are cleaning and drying identification, accessibility to cleaning tools, convenience in cleaning, and convenience in drying. This study presents a quantitative procedure to evaluate cleaning-ability, derived various factors influencing each of the details of easiness and their ranges, and gave scores to the factors according to their ranges. The weight was also calculated for the details of easiness in cleaning and the factors. Lastly, this researcher suggests a scoring procedure to evaluate cleaning-ability quantitatively and the total weight of cleaning-ability.

A Study on the Technical Contents for BIM Design Support (BIM 설계지원 기술콘텐츠 구축에 관한 연구)

  • Cho, Hyunjung;Jang, Jinseok;Kim, Yeonsoo
    • Korean Journal of Computational Design and Engineering
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    • v.20 no.2
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    • pp.114-123
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    • 2015
  • The BIM libraries and technical contents in order to develop common technical standards that reflect the contents for a BIM design support should be based. It is essential to redress the technological burden on design office requirements. The technical contents consisted of Material Information, Standard Details and Cost Information are made by system of standard classification. By connecting BIM libraries with each of information including the contents, it derives the consistent BIM data application through the integrated model. In addition, we look forward to introducing and applying BIM more easily through securing common technical contents which remove the pressure of engineering developments of each individual architectural design office and prevent overlapping investments.

Analysis of Nonlinear Seismic Behavior of Reinforced Concrete Shear Wall Systems Designed with Special and Semi-Special Seismic Details (특수 및 준특수 상세에 따른 철근콘크리트 전단벽의 비선형 내진거동 해석)

  • Yoon, Sung-Joon;Lee, Kihak;Chun, Young-Soo;Kim, Tae-Wan
    • Journal of the Earthquake Engineering Society of Korea
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    • v.17 no.1
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    • pp.43-51
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    • 2013
  • In this paper, analytical models for reinforced concrete shear wall systems designed based on Korean Building Code (KBC2009) are proposed, which have special and semi-special seismic details and are compared with experimental results for a verification of analytical models. In addition, semi-special seismic details aimed to improve constructability and enhance economic efficiency were proposed and evaluated. The analytical models were performed based on nonlinear static and dynamic analysis. Through the nonlinear analyses, two seismic details showed the similar seismic behavior from the cyclic test and the analytical models for the two different seismic details represented the behavior in terms of the initial stiffness, maximum strength and strength degradation. And newly proposed seismic details(semi-special) provided with similar hysterestic behavior as well as the maximum drift.

A study on the shoulder composition methods of power shoulder jackets and corresponding details (파워숄더 재킷의 어깨 구성 방법과 디테일 대응 분석)

  • Park, Jeongah;Lee, Jeongran
    • The Research Journal of the Costume Culture
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    • v.29 no.3
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    • pp.388-405
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    • 2021
  • This study classifies the compositional methods of power shoulder jackets from 1980 to the present. It analyzes the relevance of jacket details according to how the power shoulder changes and its compositional methods by era. The research subdivides shoulder compositional techniques into seven, based on shoulder variation, sleeve variation, and the body and sleeve combination. The researcher investigates the frequency and trends of composing shoulders and analyzes details pertaining to the silhouette, jacket length, collar shape, and front closure. The most common method of shoulder composition is an angular shoulder variation. The others are a rounded shoulder variation, puffed sleeve, sleeve variation using pattern incision, raglan and kimono sleeves, and a shoulder variation that expanded the angle and width. The frequency differs slightly for each era. The relationship between shoulder compositional methods and details of power shoulder jackets is statistically significant, showing period-related differences. The homogeneity analysis results reveal that the shoulder composition of power shoulder jackets, the times, and details fall into distinct groups. This analysis shows that the silhouette, length, collar, and front closure of the power shoulder jacket differ depending on the power shoulder's compositional methods. Moreover, the shape of the power shoulder jacket is distinctly different. One can use this data to help develop the power shoulder jacket design by reflecting the details of shoulder compositional methods and changing trends over time.

Image Perception of Wedding Hair Coordination (I) -Based on female University Students- (웨딩헤어 관련 코디네이션의 이미지 지각 (I) -여대생을 중심으로-)

  • 정현주;한유정
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.7
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    • pp.735-745
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    • 2003
  • This paper looks at perceived images of female university students concerned with various wedding hair coordination including wedding hair styles, veil details and fitting positions and head dresses. Ta design an experimental test of a wedding dress and hair coordination variables, the content analysis of magazines was performed and hair experts were interviewed. 17 stimuli representing the variables of wedding hair coordination were manipulated and included with hair styles(2), veil details(2), veil fitting Positions(2), head dresses(2) and a wedding hat(1). The questionnaire of 445 was carried out and data were statistically processed. As a result, five images of wedding hair coordination were factors loaded, that is, favorable, decorative, smooth, personal and pretty one. Various main and interaction effects were found in images of it regarding to changing hair styles, different veil details and fitting positions and head dresses. favorable images, they affected by interactions between hair styles and veil details, hair styles and veil fitting positions, hair styles and head dresses and between veil details and the fitting positions. For personal images, interactions between veil details and the positions of veil fitting had effects on female students; for smooth images, That is, for hair style, female university students were influenced by favorable and smooth images; for veil details, by decorative and smooth images; for the positions of fitting veil, by decorative and favorable ones Then the researcher examined effects by dual interactions between factors of wedding hair coordination. For decorative images, they were found influenced by interactions between hair styles and veil details and between hair styles and head dresses. For personal ones, interactions between veil details and the fitting positions; for pretty images, interactions between the fitting positions and head dresses. These findings will provide sellers of the wedding dress with the idea of how females to perceive wedding hair coordination according to the variation of it.

The effects of asking unexpected questions on general details and verifiable details (예상치 못한 질문이 진술의 세부정보와 확인 가능한 사실의 양에 미치는 영향)

  • Moon, Hyemin;Jo, Eunkyung
    • Korean Journal of Forensic Psychology
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    • v.11 no.3
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    • pp.349-370
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    • 2020
  • This study was to test the effects of unanticipated questions on the number of general and verifiable details. In addition, the number of verifiable details would discriminate truth-tellers and liars more accurately than the number of general details. In a 2(Veracity: truth vs. lie) X 2(Question type: Expected questions vs. Unexpected questions) mixed-design study, truth tellers(N=40) were asked to visit a cafe on campus and liars(N=40) were told to fabricated a story as if they visited the cafe. Then, participants were interviewed about their trip to the cafe and asked four questions(two anticipated questions: 'report the trip in detail', 'describe the place'; two unanticipated questions: 'recall in reverse order', 'report verifiable details'). Each participant's statements were transcribed and coded by trained graduate students for the number of general details and verifiable details. The results showed that truth-tellers mentioned significantly more general details than liars regardless of the question type. On the contrary, there was no significant difference between liars and truth-tellers in the number of verifiable details. High percentages of truth-tellers(62.5%) and liars(80.0%) were classified correctly based on the number of general details whereas only 45.0% of truth tellers and 62.5% of liars were accurately classified by the number of verifiable details. Liars were found to speak more words when asked to provide verifiable details compared to a general open question, but the number of general details did not seem to increase accordingly. The limitations of this study and future research directions were discussed.

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A Study on the Preference of Wedding Dress Design - Focused on Ulsan and Seoul - (미혼 여성의 웨딩드레스 디자인에 대한 선호도 연구 - 울산과 서울을 중심으로 -)

  • Lee, Eun-Sook;Lee, Eun-Jung
    • Journal of the Korea Fashion and Costume Design Association
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    • v.11 no.2
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    • pp.117-129
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    • 2009
  • This study is to examine unmarried women's preferences about wedding dresses. This is researched with a survey of 300 unmarried women in Ulsan and Seoul. The survey inquires their preferences of silhouettes, necklines, materials, and details in wedding dress. 290 valid questionnaires are analyzed statistically. Statistical analysis is used average, frequency, and crosstabs with SPSS10.0. The results of this study are as below; As for an income level, the high-income brackets in Ulsan preferred X silhouette, whereas in Seoul H silhouette. The low-income brackets in both areas preferred X silhouette. In necklines, boat neckline was preferred in both areas regardless of incomes. In materials, in Ulsan, the high-income brackets preferred silk, but the low-income brackets in Ulsan preferred satin. In Seoul, silk was preferred regardless of incomes. In details, the high-income brackets in both areas preferred beads and ribbon. In the low-income brackets, embroidery decorations were preferred in Ulsan, whereas beads, jewels and ribbons in Seoul. As for personalities, X silhouette was preferred in most personalities, A silhouette in some personalities in Seoul. In necklines, boat neckline is preferred in most personalities. In materials, silk was preferred in most personalities. In details, beads and jewels were preferred in most personalities. As for ages, in most ages, X silhouette was preferred in Ulsan, and X and A silhouettes in Seoul. In necklines, in most ages, boat neckline was preferred in both areas. In materials, silk was preferred in most ages. In details, beads and jewels were preferred in most ages.

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A Resource Design Methodology and Adapters Implementation for Core Framework for Software Defined Radio

  • Son, Jin-Ho;Tai M. Chung
    • Journal of electromagnetic engineering and science
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    • v.3 no.2
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    • pp.91-98
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    • 2003
  • Software Communication Architecture(SCA) has been made to reduce the development period of new waveform applications by reusing design modules. Software Defined Radio(SDR) forum adopted SCA specification and follows its design concept. However, SCA specification does not describe interfaces and deployments of resources in details, which are software components, and how to implement them as well as how to communicate each other are another missing points in specification. In this paper, we propose a resource design methodology and details of adapter implementation for Core Framework(CF) that is a core set of open interface and services providing an abstraction of the underlying software and hardware layer. We also present SDR prototype system which communicates with resources implemented in different programming languages and processors in legacy environment through our design methodology.

A Study for Design of Reinforced Concrete Pier Based on Virtual Model (Virtual Modeling 기반의 철근 콘크리트 교각 설계에 관한 연구)

  • Lee, Heon-Min;Park, Jae-Geun;Kim, Min-Hee;Choi, Jung-Ho;Shin, Hyun-Mock
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2008.04a
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    • pp.96-99
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    • 2008
  • When the design modification is occurred, at present, design process based on 2-D spend more time and effort than that based on 3-D to modify related structural details. To improve and develop these processes, therefore, the design possibility of civil structures based on virtual model of 3-D must be investigated. We designed reinforced concrete pier of 3-D model, containing parameters. The parameters was defined as structural details like area of the section, reinforcement specification for design modification and structural analysis. In this paper, we researched about the processes modeling of reinforced concrete bridge pier based on parameters, the extracting data from the virtual model of 3-D, and the reflection of data to virtual model throughout structural analysis.

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