• Title/Summary/Keyword: Disassembling

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A Study on Behavior of Snap-fit Connection in GFRP composite deck during assembling or disassembling (수직결합식 복합소재 바닥판 연결부의 착탈시 거동분석)

  • Yoo, Suk-Jin;Lee, Sung-Woo;Hong, Kee-Jeung
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2008.04a
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    • pp.282-287
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    • 2008
  • Since glass-fiber reinforced composite decks have high-strength, light-weight and high durability, many researchs on the composite decks for bridges are currently performed and many composite decks are developed. In this paper, a composite deck with snap-fit connection for pedestrian bridge is developed and studied. A study on behavior of snap-fit connection of composite deck for pedestrian bridge during assembling or disassembling is performed by analysis and experiment.

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Recognition of hand written hangeul based on the stroke order of the elementary segment

  • Song, Jeong-Young;Akizuki, Kageo;Lee, Hee-Hyol;Choi, Won-Kyu
    • 제어로봇시스템학회:학술대회논문집
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    • 1994.10a
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    • pp.302-306
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    • 1994
  • This paper describes how to recognize hand written Hangeul character using the stroke order of the elementary segment. The recognition system is constructed of parts : character input part, segment disassembling part, character element extraction part and character recognition part. The character input part reads the character and performs thinning algorithm. In the segment disassembling part, the input character is disassembled into elementary segments using the direction codes and the feature parameters. In the character element extraction part, we extract the character element using the stroke order and the knowledge rule. Finally, we able to recognize the hand written Hangeul characters by assembling the character elements, in the character recognition part.

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Virtual Disassembly

  • Mo, Jianzhong;Zhang, Qiong;Gadh, Rajit
    • International Journal of CAD/CAM
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    • v.2 no.1
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    • pp.29-37
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    • 2002
  • De-manufacturing is an entire process of collecting, disassembling, reusing, refurbishing, recycling, and/or disposing products that are obsolete or un-repairable. Designing the products for inexpensive and efficient disassembly enhances the ease of de-manufacturing. Virtual disassembly addresses the difficulty and the methods to disassemble a product in design stage rather than really disassemble a product at the end of its life cycle. Based on the virtual disassembly analysis results, design will be improved for better assembling/disassembling. This paper presents a systematic virtual disassembly methodology such as disassembly relation modeling, path/sequence automatic generation and evaluation. This paper also presents a new virtual disassembly interface paradigm via virtual reality technology for disassembly simulation in virtual environment.

The Study on Cubism expressed in Current Fashion (복식에 표현된 큐비즘(Cubism)에 관한 연구)

  • 정연자
    • Journal of the Korean Society of Costume
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    • v.39
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    • pp.99-111
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    • 1998
  • Cubism has played a great role to change traditional concept of art and visual of people as developed into one of new art stlyes. It has avoided three dimensional perspectives and reformed the concept of time and space. It expresses objects with geometric shape by simplifying and reconstructing the objects after taking them apart. This has the effect of simultaneous vision and transparency and brings in collage by combining geometric image and visual elements. The results of the study as follows: First, the geometric shape expresses straight lines, curves, faces, and cubics by simplifying the objects. In fashion, it expresses circles, triangles, squares with a cloth. This shows visual changes as three dimensional space moves. Second, simultaneity disassembles and recontructs the objects. It tries to understand the internal shape with method of disassembling and makes visions coexist. In so doing, cubists adopt simultaneity for expressing shapes. In fashion, it expresses new items through disassembling or combining with other items. Third, transparency simplifies cubics by duplicating with transparent flats and crosses contour lines for reconstructing the simplified objects. This implies broader spatial order. It allows people to perceive penetration of layed clothes. Fourth, collage expresses geometric shape by adding visual elements(concrete image and color). It uses concrete image with paper, letters, cloth, etcs, which is not related to painting, and introduces various colors. In fashion, it uses dolls, postcards, feathers, metals, plastics, for patchwork.

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Induction of Oxidative Stress and Cytoskeleton Damage by Cadmium in WB-F344 Rat Liver Epithelial Cells (랫드간장상피세포에서 카드뮴에 의한 산화적 스트레스 및 Cytoskeleton 손상 유발에 관한 연구)

  • 정상희;조명행;조준형
    • Toxicological Research
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    • v.14 no.4
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    • pp.577-585
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    • 1998
  • Cadmium is an important industrial and environmental pollutant and has adverse effects on cell growth and metabolism, although the mechanisms of its cellular toxicity are still unclear. This study was performed to elucidate the cytotoxic mechanism of cadmium in the viewpoint of oxidative stress and cytoskeleton alterations in WB-F344 rat liver epithelial cells. 200 $\mu\textrm{M}$ $CdCl_2$ caused a severe disassembling of microtubule and micro filament and an apparent cell retraction under an observation with fluorescence micoscope. (equation omitted)-tubulin and F-actin protein were highly thiolated at 20 min and then disappeared from 1 hour after the treatment of 200 $\mu$M CdCl$_2$in the immunoblot analysis. Intracellular GSH was decreased from 1hr to 24 hrs by 66.6 or 200 $\mu\textrm{M}$ of $CdCl_2$. Intracellular protein thiol was also decreased by 22.2, 66.6 and 200 $\mu\textrm{M}$ of $CdCl_2$ at 1 hour after its treatment. The product of lipid peroxidation (malondialdehyde) was increased from 4 hrs by 66.6 and 200$\mu\textrm{M}$ of $CdCl_2$. These data indicate that cadmium induces oxidative stress involving disassembling of microtubule and micro filament, thiolation of (equation omitted)-tubulin and actin protein, depletion of GSH and protein thiol, and increase of lipid peroxidation.

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A Study about Disassembly Estimate and the Leaching Characteristic of Heavy Metal from Wasted Home Appliances and Computers (폐가전제품 및 폐컴퓨터의 분해성 평가와 중금속 용출특성에 관한 연구)

  • 이행승
    • Journal of environmental and Sanitary engineering
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    • v.14 no.1
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    • pp.1-10
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    • 1999
  • This study was carried out to improve management of wasted home appliances and computers. The generation of wasted home appliances and computers in korea was estimated. Disassembling wasted home appliances and computers according to disassembly procedure, investigate fittings weight and disassembly time. To evaluate hazardous contaminants from televisions and computers, measure heavy metals by leaching test.

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