• 정보화사회
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• s.111
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• pp.31-34
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• 1997

화폐란 거래를 원활히 하는데 쓰이는 매개물의 일종으로 이 매개물은 조개껍데기, 옷감, 소금처럼 물건일 수도 있으며, 혹은 오늘날에 사용하는 지폐나 주화일 수 도 있다. 이러한 화폐의 기능으로는 가치척도, 지급수단, 가치저장, 교환의 기능이 있다.

• Journal of the Korea Society of Computer and Information
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• v.29 no.8
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• pp.59-65
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• 2024

In this paper, we present a GPU-based acceleration of computationally intensive self-collision processing in triangular mesh-based cloth simulation. For Compute Unified Device Architecture (CUDA)-based parallel optimization, we propose 1) an efficient way to build, update, and traverse the Bounding Volume Hierarchy (BVH) tree on the GPU, and 2) optimize the Representative-Triangle (R-Triangle) technique on the GPU to minimize primitive collision checking in triangular mesh-based cloth simulations. As a result, the proposed method can handle self-collisions and object collisions of cloth simulation in GPU environment faster and more efficiently than CPU-based algorithms, and experiments on various scenes show that it can achieve simulation results that are 5x to 10x faster. Since the proposed method is optimized for BVH on GPU, it can be easily integrated into various algorithms and fields that utilize BVH.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06a
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• pp.277-278
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• 2008

• Proceedings of the IEEK Conference
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• 2003.11b
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• pp.125-128
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• 2003

This paper proposes efficient cloth animation and collision handling methods. There have been various techniques for the generation of cloth behavior. However, the cloth animation is still a challenging subject in real-time environments. This paper presents an efficient animation method based on implicit integration. The proposed method can efficiently animate virtual cloth object with complex geometry. In addition, this paper also introduces an efficient collision handling method. The collision resolution is another important issue in cloth animation since deformable objects has special collision problem called self-collision. In this paper, the self-collision was successfully avoided in real - time environments.

• The Journal of the Korea Contents Association
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• v.18 no.8
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• pp.353-365
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• 2018

This study is on the usage of bojagi recorded in Yeongjo Jeongsun Wanghu garye dogam uigwe. Major findings are as follows. The eighteenth century marked a period of entrenchment of Neo-Confucianism in the Joseon dynasty and the royal wedding was a tool to propagate Neo-Confucian values to the people. The bojagi used at King Yeongjo and Queen Jeongsun's wedding were made of simple red silk produced domestically to avoid extravagance. Uasge of costly flower-patterned silk from China was restricted to comply with the rules of the Kukhon jeongrye, which codified the royal marriage ceremony and the Sangbang jeongrye, which regulated royal attire. This modesty also shows King Yeongjo's determination to abandon lavishness.

• Journal of Korean Home Economics Education Association
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• v.13 no.2
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• pp.15-24
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• 2001

The purpose of this study is to find out practical teaching material about$\boxdr$Cloth$\boxul$part of home economics course in highschool and prove it's effect on learning as the result of applying to teaching and learning activities. The objects of this study were 144 first grade students of Puyo girl's high school located in Puyo county of Chung-nam province. They were identified to have the same quality through such inspections as intelligence quotient and previous scholastic ability test. Experiment group is composed of 72 students of two class in first grade and those students utilized swatch. Controlled group is also made up of 72 students like experiment group and they didn't use swatch. The procedure of this study was as follows : First we collected the real clothing material which was necessary in $\boxdr$Cloth$\boxul$part of high school home economics and made teaching plan that could be used to make use of swatch. In this study. we first seek the averages and variations to know how much is the influence of using real things as the studying materials on the class. Then we verified the level of attention to compare and the level of student's schoolwork accomplishment. interest and attitude between experiment group that used the swatch and controlled group who didn't use those material. The result of this study are as follow : 1) After using swatch. students'attitude toward receiving information was getting better. 2) Students'interest toward$\boxdr$Cloth$\boxul$part was getting higher. 3) Scholastic accomplishment of experimental group became higher than that of controlled group.

• Journal of the Korea Computer Graphics Society
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• v.8 no.1
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• pp.37-45
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• 2002

We present a cloth simulation technique that is very stable yet also responsive. The stability of the technique allows the use of a large fixed time step when simulating various types of fabrics and character motions. The animations generated using this technique are strikingly realistic. Wrinkles form and disappear in a quite natural way, which is the feature that most distinguishes textile fabrics from other sheet materials. Significant improvements in both the stability and realism were made possible by overcoming the post-buckling instability as well as the numerical instability. The instability caused by buckling arises from a structural instability and therefore cannot be avoided by simply employing an implicit method. Addition of a damping force may help to avoid instabilities; however, it can significantly degrade the realism of the cloth motion. In this paper, a new buckling model based on immediate buckling assumption is proposed. A cloth element is assumed to reach a stable configuration immediately once it begins to buckle. This assumption makes it possible to simulate the fabric buckling stably without introducing any fictitious damping force. Consequently, it produces highly responsive cloth motion as well as improves the stability by modeling the fabric-specific buckling property adequately.

• Journal of the Korean Society of Costume
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• v.52 no.3
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• pp.149-160
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• 2002

Symbolism found in a certain object inherits characteristics from the culture that contains the objects. The purpose of this study was investigate the formative beauty of Korean trousers twisted the pieces together based on the way of Korean thinks and the Topology. The shape is formed by cutting from the fabric. From the perspective of semiology, the fabric and the pattern shape correspond to ground and figure. Ground and figure are identical with the principle of the whole and the part, which is the same in Korea, China, and the West. But In Korea, the 3-dimensional garment is made by adding a twist. This is very important and defines the difference in the way of thinking and topology. Korean trousers consist of three parts : Hury, Marupok, and Sapok. The small Sapok can be made by removing the Marupok and large Sapok (figure) from the fabric (ground) when making Korean trousers. A Mobius strip is made when the large Sapok is adjoined with the small Sapok by reversing the small Sapok, making a 180$^{\circ}$twist and then stitching together. The theory of Mobius strip can be applied in Joining Bajiburi. thus when the trousers are completed the Klein's bottle is seen because of the 2 existing Mobius strop. The theory of Mobius strip can be applied in Joining Bajiburi, thus when the trousers are completed the Klein's bottle is seen because of the 2 existing Mobius strip. Hury is cylinder while the small and large Sapok make up the Mobius strip. As a result, Mobius strip, Kleins'bottle, protective plan can be applied in cutting Hanbok used in the countryside, so I have come to see that the traditional Korean way of thinking is closely related to the theory of topological.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.5 s.153
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• pp.699-710
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• 2006

The objective of this study was to identify the texture-related components of woven fabrics and to develop a multidimensional perceptual structure map to represent the tactile textures. Eighty subjects in clothing and tektite industries were selected for multivariate data on each fabric of 30 using the questionnaire with 9 pointed semantic differential scales of 20 texture-related adjectives. Data were analyzed by factor analysis, hierarchical cluster analysis, and multidimensional scaling(MDS) using SPSS statistical package. The results showed that the five factors were selected and composed of density/warmth-coolness, stiffness, extensibility, drapeability, and surface/slipperiness. As a result of hierarchical cluster analysis, 30 fabrics were grouped by four clusters; each cluster was named with density/warmth-coolness, surface/slipperiness, stiffness, and extensibility, respectively. By MDS, three dimensions of tactile texture were obtained and a 3-dimensional perceptual structure map was suggested. The three dimensions were named as surface/slipperiness, extensibility, and stiffness. We proposed a positioning perceptual map of fabrics related to texture naming system(TNS). To classify the textural features of the woven fabrics, hierarchical cluster analysis containing all the data variations, even though it includes the errors, may be more desirable than texture-related multidimensional data analysis based on factor loading values in respect of the effective variables reduction without losing the critical variations.

• Journal of the Korea Society of Computer and Information
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• v.28 no.9
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• pp.73-79
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• 2023

This paper describes a level of detail (LOD) based bending spring structure and damping technique that can reliably represent strain-based dynamics (SBD) on a triangular mesh. SBD models elastic energy using strain instead of energy based on the edge length of a triangular mesh. However, when a large external force occurs, the process of calculating the elastic energy based on edges results in a degenerate triangle, which stretches in the wrong direction because it calculates an unstable strain. In this paper, we introduce an LOD-based bending spring generation and energy calculation method that can efficiently handle this problem. As a result, the technique proposed in this paper can reliably and efficiently handle SBD based on bending springs, which can provide a stable representation of cloth simulation.