• Title/Summary/Keyword: Origami construction

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Origami Inspiration in Contemporary Fashion (현대 패션에 나타난 오리가미의 영향)

  • Yim, Eun-Hyuk
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.8
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    • pp.1253-1261
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    • 2009
  • The paper-folding effect of origami signifies a planarization of the body which questions the three dimensional construction of the body in a more conventional clothing system. Un-structured, variable space posited between the body and clothes, and an absence of gender identification characterizes the planarization of the body. Origami inspiration in fashion stresses a will-to-form rather than mere bodily proportion and structure, which explores a trans-extensity that goes beyond the boundary of the body. This study inquires on the influence of origami as a method to create new vestmental space in contemporary fashion. The flat-plane clothes of origami-inspired design are no longer cut to the body and the clothes could be altered by the wearer. The space is introduced in between a three-dimensional dress-body and the body. Origami-inspired design in Japanese avant-garde fashion deconstructs the convention and promotes a symbiosis of body and clothing instead. The shape of the body is completely estranged by three-dimensional sculptures, alluding to the paper folds of origami and the movement of the body that are transmitted to the clothing through fine folding that transform into an unexpected event.

The Expressive Characteristics of Origami Fashion based on Functionality (기능성이 반영된 오리가미 패션의 표현특성)

  • Choi, Jung-Hwa;Choi, Yoo-Jin
    • The Korean Fashion and Textile Research Journal
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    • v.11 no.4
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    • pp.515-526
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    • 2009
  • From traditional ceremony to science technology, origami was used as technique for artistic creativity and functionality based on formative characteristics. The purpose of this study is to analyze the expressive characteristics of functionality in fashion design using origami technique. The method of this study was to analyze recent documentaries, fashion books, fashion magazines, internet web site and so forth. The results were as follows: In various fields of design, the category of the expressive characteristics was classified as efficient correspondence of space, compositive convergence of function, variable potentiality of form and human ergonomic optimum. In recent origami fashion based on functionality, the efficient correspondence of space was expressed constructive or decorative pocket design, using on clothing surface and varied design by lifestyle. The compositive convergence of function was expressed innovative connection of fashion items or non-fashion items and deconstructed classical clothing pattern. The variable potentiality of form was expressed control of form by irregular fold, dynamic metamorphosis by organic fold and creation of varied clothing silhouette. The human ergonomic optimum was expressed metamorphosis mechanism from two dimension to three dimension, suitable construction to physical ability and limit and organic form based on articular folding. The functional origami fashion means reflection of nomadic lifestyle, maximum of usability, pursuit of playful sensibility, creation of new body aesthetic and pursuit of technology and humanism. And the result of these study may be used for creative inspiration in fashion design because of unique characteristics.

Investigating nonlinear dynamics and vibration of composite cylindrical shells with Graphene-origami enabled cores

  • Farzad Ebrahimi;Seyede Zahra Mirsadoghi
    • Advances in nano research
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    • v.18 no.4
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    • pp.307-319
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    • 2025
  • This work investigates the nonlinear dynamic response and oscillation analysis of composite-structured cylindrical shells. The core of this structure is constructed from graphene origami (Gori), a metamaterial with a negative Poisson's ratio (NPR). The exterior sides of this structure are composed of aluminum. To precisely determine the dynamic response of a framework, it is subjected to specific conditions, including external excitation and pre-loading. The governing Equations for the behavior and motion of the cylindrical shell are obtained utilizing the enhanced Donnell theory and the nonlinear von Karman theory, facilitating a more precise description of the shell's nonlinear behavior. This study has addressed the boundary conditions for the cylindrical shell in a straight forward manner. The governing Equations of the structure have been resolved utilizing the Galerkin's approach, and the resultant numerical results have been analyzed. This article aims to examine the linear and nonlinear vibration response ratios of cylindrical shells, taking into account the effect of negative Poisson's ratio and its nonlinear dynamic analysis. The findings of the current investigation are shown in the relevant tables alongside related research. This research examines the impact of oscillations in the geometric parameters of the structure and the characteristics of graphene origami as critical variables. The results are illustrated in figures, and their impact on the dynamic and vibrational characteristics of the structure is examined. This research investigates the dynamic behavior of cylindrical composite shells and offers solutions to the issues within this domain by analyzing the applications of this construction.

Organic Geometry in Isabel Toledo's Collections (이사벨 톨리도 컬렉션에 나타난 유기적 기하학)

  • Yim, Eun-Hyuk
    • Journal of the Korea Fashion and Costume Design Association
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    • v.18 no.4
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    • pp.63-75
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    • 2016
  • This study examines the organic geometry in Isabel Toledo's collections in terms of the practicality of American sportswear tradition. This study conducts literary survey combined with case analysis of Toledo's works from her debut collection in 1985 to the recent ones. The organic geometry in Toledo's designs refers to the conversion of two-dimensional garment patterns into three-dimensional garment forms with the body as a medium, which is classified into the following categories in this study. First, 'fluidity' describes Toledo's highly fluid jersey dresses which maintain consistent structures by patchwork draping and suspension technique. Second, 'reductionist structure' illustrates that simple geometric shapes such as circles and squares disappear as soon as worn on the body. Third, 'origami construction' explains folding two-dimensional fabrics into three-dimensional forms, which causes the outlines of the body to appear abstract. Toledo's designs deliver the tradition of American sportswear through the organic geometry of garment construction. Toledo's works are authentic American in the aspects that they are functional and modern; they satisfy the practical needs, prioritize the movements of wearers, pursue multi-functions, and their ornamental elements are accompanied by the construction of garments. Isabel Toledo presents designs drawing on her unwavering aesthetics while continuously developing and experimenting creative ways of garment construction.

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Enhanced formula-based method to estimate burnup, initial enrichment, and cooling time using limited gamma-ray source data of reference PWR spent nuclear fuel assemblies

  • Sang Hyeok Lee;Jae Hak Cheong
    • Nuclear Engineering and Technology
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    • v.57 no.2
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    • pp.103222.1-103222.14
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    • 2025
  • This study proposes a framework to develop a model for estimating burnup (BU), initial enrichment (IE), and cooling time (CT) of spent nuclear fuel (SNF) overcoming the limitations of existing models in determining IE. Database (DB) of gamma-ray sources for PWR SNF was generated using ORIGAMI. Target gamma radionuclides were selected based on the ease and credibility of measurement. The concept of Product of Powers of Radioactivity (PPR) was suggested, and PPRs for modeling were selected through evaluation of all possible PPRs. Functions established for PPRs were applied to estimate BU, IE, and CT (BIC) of PWR SNF assemblies. Optimized PPR combinations for estimating BU, IE, and CT respectively, as well as three variables simultaneously with the highest accuracy, were suggested. The estimation model proposed in this study enhanced IE estimations, maintaining the reliability of BU and CT estimations. The above framework enables construction of intuitive BIC estimation models using only a small amount of data. This can help hasten the development of estimation models for SNF from various reactor types. Consequently, it is expected to contribute to the safety and safeguards of SNF management by improving the verification that SNF meets acceptance criteria and conforms to the declared information.

Construction of Candida antarctica Lipase B Expression System in E. coli Coexpressing Chaperones (대장균에서의 Chaperone 동시 발현을 통한 Candida antarctica Lipase B 발현 시스템 구축)

  • Jung, Sang-Min;Lim, Ae-Kyung;Park, Kyung-Moon
    • KSBB Journal
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    • v.23 no.5
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    • pp.403-407
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    • 2008
  • Recently, Candida antarctica lipase B (CalB) draws attention from industries for various applications for food, detergent, fine chemical, and biodiesel, because of its characteristics as an efficient biocatalyst. Since many industrial processes carry out in organic solvent and at high temperature, CalB, which is stable under harsh condition, is in demand from many industries. In order to reform CalB promptly, the expression system which has advantages of ease to use and low cost for gene libraries screening was developed using E. coli. The E. coli strains, Rosettagami with competence for enhanced disulfide bond formation, Novablue, and $DH5{\alpha}$, were exploited in this study. To obtain the soluble CalB, the pCold I vector expressing the cloned gene at $15^{\circ}C$ and the chaperone plasmids containing groES/groEL, groES/groEL/tig, tig, dnaK/dnaJ/grpE, and dnaK/dnaJ/grpE/groES/groEL were used for coexpression of CalB and chaperones. The colonies expressing functional lipase were selected by employing the halo plate containing 1% tributyrin, and the CalB expression was confirmed by SDS-PAGE. E. coli Rosettagami and $DH5{\alpha}$ harbouring groES/groEL chaperones were able to express soluble CalB effectively. From a facilitative point of view, E. coli $DH5{\alpha}$ is more suitable for further mutation study.

Construction, Investigation and Application of TEV Protease Variants with Improved Oxidative Stability

  • Bayar, Enkhtuya;Ren, Yuanyuan;Chen, Yinghua;Hu, Yafang;Zhang, Shuncheng;Yu, Xuelian;Fan, Jun
    • Journal of Microbiology and Biotechnology
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    • v.31 no.12
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    • pp.1732-1740
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    • 2021
  • Tobacco etch virus protease (TEVp) is a useful tool for removing fusion tags, but wild-type TEVp is less stable under oxidized redox state. In this work, we introduced and combined C19S, C110S and C130S into TEVp variants containing T17S, L56V, N68D, I77V and S135G to improve protein solubility, and S219V to inhibit self-proteolysis. The solubility and cleavage activity of the constructed variants in Escherichia coli strains including BL21(DE3), BL21(DE3)pLys, Rossetta(DE3) and Origami(DE3) under the same induction conditions were analyzed and compared. The desirable soluble amounts, activity, and oxidative stability were identified to be reluctantly favored in the TEVp. Unlike C19S, C110S and C130S hardly impacted on decreasing protein solubility in the BL21(DE3), but they contributed to improved tolerance to the oxidative redox state in vivo and in vitro. After two fusion proteins were cleaved by purified TEVp protein containing double mutations under the oxidized redox state, the refolded disulfide-rich bovine enterokinase catalytic domain or maize peroxidase with enhanced yields were released from the regenerated amorphous cellulose via affinity absorption of the cellulose-binding module as the affinity tag.