• Title/Summary/Keyword: Hanging type

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DEVELOPMENT AND APPLICATION OF SUBSTRUCTURE NON SUPPORTING FORMWORK FOR TOP-DOWN CONSTRUCTION

  • Mee-Ra Jeong;Hong-Chul Rhim;Doo-Hyun Kang;Kwang-Jun Yoo
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.788-793
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    • 2009
  • Constructing substructures by using Top-Down or Downward method needs an efficient formwork system because of difficulties in supporting concrete slabs from the bottom while excavation is in process. Existing underground formwork systems can be classified by three types: graded ground supported type (Slab On Grade, Beam On Grade), suspension type (Non Supporting Top Down Method), and bracket supported type (Bracket Supported R/C Downward). Each method has its own advantages and limits. Application of a specific formwork system for a given construction site is determined by various conditions and affect construction time and cost. This paper presents a newly developed underground non-supporting formwork system, which combines the advantages of a suspension type and a bracket supported type while it overcomes limits of two types. The developed system has a moving formwork which is supported by suspension cables hanging from the bracket placed at the top of pre-installed substructure columns. Then, the moving formwork is repeatedly lowered down for the next floor below to support concrete slab during curing. The details of this bracket and cable supported system have been investigated for the improvement of easiness in construction.

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A Study on the Classification of Neck-Base Circumference by Three-Dimensional Automatic Measurements of the Human Body - With the Focus on Women in their 20's - (3차원 인제 형상 데이터를 이용만 목밑둘레 유형화 연구 - 20대 여성을 중심으로 -)

  • Cho, Shin-Hyun;Seok, Hye-Jung
    • Journal of the Korean Society of Costume
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    • v.58 no.6
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    • pp.35-41
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    • 2008
  • The purposes of this study lied in the analysis and classification of neck-base circumference shapes of the women in their twenties, by the application of three-dimensional automatic measurement data of human body, and thereby in the understanding of neck-base circumference shapes by the classified type. The findings are as follows: 1. The comparison of three-dimensional human body measurement items relating to the neck-base circumference part of the women in their twenties indicated that the largest individual difference was found in cervicale-center-anterior neck radius than in other items. 2. The factor analysis, which was conducted to extract the factors constituting the neck-base circumference, showed the shape of cervicale(factor 1), the shape of section neck(factor 2), the thickness of neck(factor 3), the shape of anterior neck(factor 4), and the shape of side neck(factor 5). 3. The classification of the neck-base circumference shapes resulted in three types. Type 1 was the shape of a reverse triangle hanging forward, Type 2 was that of a circle, and Type 3 was that of an oval open to the sides.

A Study of Contingency Found in Soft Sculpture and Fashion -Focused on Maurice Frechuret's Type Analysis- (부드러운 조각과 패션에 나타난 우연성에 관한 고찰 -프레쉬레의 유형분석을 중심으로-)

  • Kim, Bo-Young;Geum, Key-Sook
    • Journal of the Korean Society of Costume
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    • v.59 no.5
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    • pp.41-52
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    • 2009
  • In contemporary art, soft materials are used in various forms and ways as a medium expressing contingency beyond a simple nature of materials. In the late 1960's, the appearance of soft sculpture as a refusal of the stereotyped 'Erection' characteristic of traditional sculpture served as an opportunity for more attention to soft materials. Fashion is the reflection of age, and the mirror of society, culture and arts. In other words, soft sculpture and fashion are artistic behaviors in the same context, which have neither been fixed nor erected. This study finds its significance in analyzing correlation between soft sculpture and fashion, and the importance of contingency as artistic expression means in this age when boundaries between genres are obscure, and artistic values are given to fashion. By doing so, it aims to present the direction toward which fashion should face in the future, establishing a new aesthetic consciousness with which more creative and various expressions are available in fashion as well. This study presented as its theoretical background the concept of soft sculpture affected by Marcel Duchamp among representative examples of the contingency that started to appear in art starting in the early 20th century. It also analyzed the soft sculpture appeared in 1960s and the expression methods and features of contingency appeared in fashion after late 1990s through a new approach of piling up, hanging up, and tying, three categories classified by Maurice $Fr{\acute{e}}churet$. Common features of the contingency expressed in soft sculpture and fashion were derived in the analysis, which are intensive effects of energy, values given to physical properties themselves, and esthetics of anti-form.

The Term and Classification of Structure System with Non-rigid Member (연성구조시스템의 분류체계와 용어)

  • Lee, Ju-Na;Park, Sun-Woo;Kim, Seung-Deog;Park, Chan-Soo
    • Journal of Korean Association for Spatial Structures
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    • v.4 no.2 s.12
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    • pp.99-105
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    • 2004
  • The structure systems with non-rigid member were classified by the composition type of line and surface members. As a result of the classification, there are 1-way cable structure, cable net and radial cable net structure in the line member system. And there are pneumatic structure and suspension membrane structure in surface member system. In addition, when the line and surface members are composed together, there is the hybrid membrane system which are divided into hanging type and supported type. In this paper, the Korean terms of structure systems with non-rigid member are recommended through this classification.

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A Study on the Characteristics of Planning Factors to the Outdoor Space of the Olympic Village Munchen (뮌헨 올림픽마을의 외부공간계획 특징에 관한 연구)

  • Kwon Yong-Il
    • Journal of the Korean housing association
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    • v.16 no.2
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    • pp.11-17
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    • 2005
  • The purpose of this study is to find the characteristics of planning factors to the outdoor space of the olympic village munchen. The result of the research are follows; 1) The horizontal gardens of the low buildings and hanging gardens on the terraces of the high-rise buildings are intended as a continuation of the concept of the modelled landscape. 2) By virtue of the choice of the type of building and the way in which the buildings are staggered, the residents have an unimpaired view of the green spaces and recreation areas. 3) Leisure value is further enhanced by the proximity of the residential arms to the footpath running north to south. 4) The terraces allow the residents to enjoy more sun and sky, so that the view into the distance is the rule. 5) To improve orientation, the pedestrian paths to the residential wings are also situated directly over the underground vehicle-access roads.

A Study on the Development of Test Rig for High Speed Frontal Crash and Test of Members

  • Shin-You. Kang;In-Bae. Chang;Jang, Hye-Jeong
    • International Journal of Precision Engineering and Manufacturing
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    • v.3 no.3
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    • pp.21-27
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    • 2002
  • In this paper, a simple test rig of high-speed crash for the front members of vehicles was developed for the improvement of crashworthiness of vehicle's side rail. The cart hanging the specimen is accelerated up to 35 mph by the traction wire and by the force of freely dropping weight and 1:3 accelerating pulleys. The cart with shock absorbers travels on the rail roads, so it does not transfer any additional vibration to the specimen. In order to measure the energy absorbed by the specimen when it collapse to the wall and during it deform, the two strain gage type load cells are used at the wall place. The test rig rated good to test the specimen like a side rail of vehicle as developing the vehicle's structures in the early design stage.

A Family of Topic Constructions in Korean: A Construction-based Analysis

  • Kim, Jong-Bok
    • Language and Information
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    • v.20 no.1
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    • pp.1-24
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    • 2016
  • Korean is well-known for its topic-prominent properties. In this paper, we look into several subtypes of topic constructions whose grammatical complexities have received much attention in generative grammar. From a semantic/pragmatic view, topics in Korean can be classified into three different types: aboutness, contrastive, and scene-setting. Meanwhile, syntax can classify topic constructions into two types, depending on whether or not the comment clause following topic has a syntactic gap linked to the topic. In this paper, we review some key properties of these topic constructions in Korean, and suggest that each type is licensed by tight interactions between syntactic and semantic constraints. In particular, the paper tries to offer a Construction Grammar analysis where each grammatical component is interacting in non-modular ways and in which the multiple inheritance network of constructions plays an important role in capturing cross-cutting generalizations of the topic constructions.

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Development of Connection between CFT Column and Pier Foundation for Top-Down Construction (Top-Down 공사용 원형충전강관기둥과 피어기초의 개발)

  • Jeong, Mee-Ra;Rhim, Hong-Chul;Kim, Seung-Weon;Kim, Dong-Gun;Kang, Seung-Ryong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2009.05b
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    • pp.29-32
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    • 2009
  • Building foundations for Top-Down construction require a special setting, because the foundations have to be placed way before excavation for the substructure of main building, Usually, the foundation goes into the layer of rock and it is often called rock-pier foundation, Currently, a cage of steel reinforcing bars is inserted to the pre-excavated hole in the rock layer, hanging down from the wide flange steel column above. This paper presents a new method for connecting the prefounded column and the steel cage with a coupler for better connection between the two, The use of a circular Concrete Filled Tube (CFT) as a prefounded column makes it possible to have this type of connection. The details of the connection and application to a Top-Down construction site is also included in this paper.

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Crystallization and X-Ray Crystallographic Studies of Wild-Type and Mutant Tryptophan Synthase α-Subunits from Escherichia coli

  • Jeong, Mi Suk;Jang, Se Bok
    • Molecules and Cells
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    • v.19 no.2
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    • pp.219-222
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    • 2005
  • The a-subunit of Escherichia coli tryptophan synthase (${\alpha}TS$), a component of the tryptophan synthase ${\alpha}_2{\beta}_2$ complex, is a monomeric 268-residues protein (Mr = 28,600). ${\alpha}TS$ by itself catalyzes the cleavage of indole-3-glycerol phosphate to glyceraldehyde-3-phosphate and indole, which is converted to tryptophan in tryptophan biosynthesis. Wild-type and P28L/Y173F double mutant ${\alpha}$-subunits were overexpressed in E. coli and crystallized at 298 K by the hanging-drop vapor-diffusion method. X-ray diffraction data were collected to $2.5{\AA}$ resolution from the wild-type crystals and to $1.8{\AA}$ from the crystals of the double mutant, since the latter produced better quality diffraction data. The wild-type crystals belonged to the monoclinic space group C2 ($a=155.64{\AA}$, $b=44.54{\AA}$, $c=71.53{\AA}$ and ${\beta}=96.39^{\circ}$) and the P28L/Y173F crystals to the monoclinic space group $P2_1$ ($a=71.09{\AA}$, b=52.70, $c=71.52{\AA}$ and ${\beta}=91.49^{\circ}$). The asymmetric unit of both structures contained two molecules of ${\alpha}TS$. Crystal volume per protein mass ($V_m$) and solvent content were $2.15{\AA}^3\;Da^{-1}$ and 42.95% for the wild-type and $2.34{\AA}^3\;Da^{-1}$ and 47.52% for the double mutant.

Analysis of Microorganisms and Water Transport Properties of the Cotton Fabrics through Dehydration and Drying Process during Washing (세탁의 탈수와 건조과정 중 면직물의 수분전달특성 및 미생물 분석)

  • 최해운;박명자;차옥선
    • The Research Journal of the Costume Culture
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    • v.10 no.5
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    • pp.578-589
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    • 2002
  • The purpose of this research was to analyze the residual water retention and to determine the number and species of microorganisms from the wet cotton fabrics in dehydration and drying process during washing. The drying rates of terrycloth and interlock knit under the rainy seasons were measured according to the dehydration and hanging methods, layers of fabric and pre-treatment agents. Microorganisms were isolated from the dried terrycloth by pure culture, and were identified by Biolog system. The results are as follow: The initial water retention of fabrics after dehydration decreased in the order of dripping>centrifuge>squeezing method, which affected the drying rate. The drying rates were faster by increasing surface area of fabrics. There was no significant difference in drying rate among the fabrics pre-treated with detergent, or fabric softener, or cationic surfactants such as Cetyltrimethylammonium bromide(CTAB) and Benzalkonium chloride(BC). Puedomonas aureginosa was found in the fabrics treated with a powder-type detergent. On the other side, there was no growth of microorganism in the fabrics treated with a liquid-type detergent (containing antibacterial agent), CTAB and BC.

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