• Title/Summary/Keyword: weaving

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Evaluation of brass weaving fishing nets for aquaculture cage applications (어류 가두리에 적용하기 위한 황동 직조 어망의 성능 평가)

  • Geon Woo KIM;Subong PARK
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.60 no.2
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    • pp.186-193
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    • 2024
  • Most fishing nets used in fish cage aquaculture are made of synthetic fibers such as polyamide (PA) and polyethylene (PE). Therefore, it is challenging to maintain the internal volume of the fish cage due to biofouling, which can increase the load on the cage or reduce dissolved oxygen levels by impeding smooth current flow. To address this issue, research has been conducted to replace conventional synthetic fiber cage nets with brass nets, demonstrating certain benefits such as improved productivity and ease of fish cage management. However, given the need for a more thorough examination of brass fishing net weaving technology and performance, this study assessed the optimal weaving method for brass fishing nets to be used in fish cages. Additionally, it provided essential data for the practical application of brass fishing nets by evaluating their weight, tensile strength, elongation, fatigue resistance, and wear resistance. The study concluded that weaving brass fishing nets using the chain link method ensures durability, ease of installation, and compact storage in a scroll-like form. Moreover, due to their superior fatigue and wear resistance properties, brass nets can offer increased utility if appropriate net diameter and length are selected to compensate for their higher weight per unit area and relatively higher cost compared to existing fiber fishing nets.

A Study on the Safety-Maximizing Design of Exclusive Bus Lanes (안전성 제고를 위한 버스전용차로 디자인 연구)

  • Yang, Chul-Su
    • Journal of Korean Society of Transportation
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    • v.30 no.4
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    • pp.21-32
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    • 2012
  • Exclusive bus lane (EBL) is typically located in the roadway median, and is accessed by weaving across the GPLs(general purpose lanes) before entering from the left lane of the GPLs. To maximize the potential for successful EBL operations, a critical design issue that requires special attention is the length of bus weaving section before entering EBL. The process of developing guidelines for the length of bus weaving section can be supported by a sensitivity analysis of performance measure (safety) with respect to the bus weaving distance. However, field data are difficult to obtain due to inherent complexity in creating performance measure (safety) samples under various interesting flows and bus weaving distance that are keys to research success. In this paper, VISSIM simulation is applied to simulate the operation of roadway weaving areas with EBL, and based on vehicle trajectory data from microscopic traffic simulation models, the Surrogate Safety Assessment Model (SSAM) computes the number of surrogate conflicts (or degree of safety) with respect to the bus weaving distance. Then, a multiple linear regression (MLR) model using safety data (number of surrogate conflicts) is developed. Finally, guidelines for bus weaving distance are established based on the developed MLR. Developed guidelines explicitly indicate that a longer bus weaving distance is required to maintain desired safety as weaving volume increases.

Development of a Real-time Error-detection System;The Case study of an Electronic Jacquard

  • Huh, Jae-Yeong;Seo, Chang-Jun
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.2588-2593
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    • 2003
  • Any system has the possibility of an error occurrence. Even if trivial errors were occurred, the original system would be fatally affected by the occurring errors. Accordingly, the error detection must be demanded. In this paper, we developed a real-time error detection system would be able to apply to an electronic Jacquard system. A Jacquard is a machine, which controls warps while weaving textiles, for manufacturing patterned cloth. There are two types of mechanical and electronic Jacquard. An electronic Jacquard is better than a mechanical Jacquard in view of the productivity and realizability for weaving various cloths. Recent weaving industry is growing up increasingly due to the electronic Jacquard. But, the problem of wrong weaving from error data exists in the electronic Jacquard. In this research, a real-time error detection system for an electronic Jacquard is developed for detecting errors in an electronic Jacquard in real-time. The real-time system is constructed using PC-based embedded system architecture. The system detects the occurring errors in real-time by storing 1344 data transferred in serial from an electronic Jacquard into memory, and then by comparing synchronously 1344 data stored into memory with 1344 data in a design file before the next data would be transferred to the Jacquard for weaving. The information of detected errors are monitored to the screen and stored into a file in real-time as the outputs of the system. In this research, we solve the problem of wrong weaving through checking the weaving data and detecting the occurred errors of an electronic Jacquard in real-time.

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A Study on the Sustainability of Traditional Weaving Crafts through the Case of Ojiya-Chijimi and Echigo-Jofu in Japan (일본 '오지야치지미·에치고죠후(小千谷縮·越後上布)'의 사례를 통해 본 전통 직물공예의 지속 가능성)

  • Lee, Chae Won
    • Korean Journal of Heritage: History & Science
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    • v.45 no.4
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    • pp.104-113
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    • 2012
  • Traditional weaving crafts has the history, environment and lifestyle of country where the country is located. Thus it has been an regional industry because it has the representation of country due to a long history. However it has faced a threat which comes from lifestyle changes. Therefore a law on the protection of traditional weaving crafts was established and took action to protect weaving crafts. It was played importantly as protection system on weaving crafts. But traditional weaving crafts was a regional industry from long time ago, accordingly we need to think as not only cultural heritage but also crafts industry. This study will demonstrate how sustainable as designated cultural heritage and traditional crafts industry with case of Ojiya-chijimi and Echigo-jofu (Japanese traditional weaving crafts).

Traffic Flow Analysis for The Weaving Section Design on Urban Freeways (I) (도시고속도로 엇갈림 구간의 합리적 설계를 위한 교통 특성 분석 (I))

  • 최재성;이승준
    • Journal of Korean Society of Transportation
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    • v.18 no.5
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    • pp.33-42
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    • 2000
  • This Paper is a Part of research Project series to analyze unique traffic characteristics observable within weaving sections on urban freeways. The research objectives were to establish with headway distribution and maximum Passing volume on weaving sections the basis of weaving designs that can promote safety and efficiency. Until now, when one wants to check the maximum Passing volume on weaving sections, it is taken for granted using headway distribution of freeway basic section. However. it was suspected in this research that for weaving sections different form of headway distribution had better be used. To prove this, field surveys were made to count headway intervals which supposedly were influenced not only by freeway basic section flows but also by weaving flows and later on used to develop headway distribution for weaving sections. For validation of the developed headway distribution, $x^2$-test was applied to three different data set of observed headways, currently used headway distribution for basic sections(Pearson Type III distribution) and new headway distribution. The result indicated new headway distribution as the most appropriate distribution form. Also, maximum passing volume within weaving sections was calculated based on new headway distribution and compared with Drew's maximum Passing volume.

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The Caracteristics of Traditional Dyeing and Patterns on Turkish Carpets (터키지역 전통염색 카페트의 문양 특성)

  • 신정숙
    • Journal of the Korea Fashion and Costume Design Association
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    • v.6 no.1
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    • pp.34-45
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    • 2004
  • The purpose of the study was to investigate weaving, traditional dyeing, fiber material, pattern how carpet developing according to Turkey area for using the data that can rear to the export strategic industry for carpet production and development that is correct in culture. The result are followed: 1) Life of the age was expressed in color and pattern using according to geographical environment, climate, lifestyle, religion etc. 2) In the case of weaving, there is Kilim, Soumak that appears only weft on the surface as plane weaving without knot and carpet of knotted pile weaving and knot of carpet is duplex knot difference with carpet of the other country. 3) In the case of textile material, there is use most wool fiber that can get easily from breeded sheep by nomads. 4) In the case of dyeing, did the local traditional color to use dye extracting in dyeing material that can get easily in the area. Red that can extract in madder that can get easily in which area of Turkey, dark navy blue of indigo dye that indigo plant fermentation and cream beige that is wool's natural color were exposed representative traditional color of Turkey carpet. 5) Pattern was advanced uniquely as culture of the area; weaving person's sensitivity and desire are reflected through centuries. Amulet, riches & honors, fecundity and happiness appeared most pattern in any area.

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Study of Silk Weaving Industry and Design in Modern France (근대 프랑스의 견직물산업과 디자인에 관한 연구)

  • Lee, Kyung-Hee
    • Fashion & Textile Research Journal
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    • v.4 no.4
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    • pp.347-357
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    • 2002
  • In 1536, two Piedmontese merchants set up workshops in Lyons, and Henri IV encourged further development later in the 16th century. The development of Lyons as a centre of the silk weaving industry was helped by the perfection of drawloom weaving technique there in 1605 by Claude Dangon. In the 17th century, the French silk industry could finally compete with the dominance of the Italian silk trade. The French silk industry was promoted in the mid-17th century under Louis XIV's minister Colbert. In 1667, he published an ordinance creating La Grande Fabrique, a corporation for craftsmen within the silk industry, and Lyons became the undisputed French silk capital. Under Louis X IV, France was becoming the dominant force in Europe in matters of fashion and style. The major innovation of weaving was the Jacquard head attachment, which provided a mechanical means of raising warp threads by a series of punched cards. The are nouveau style did not have much impact on French silk design at the end of the century. Silk manufacturers began to collaborate with haute-couture designers such as the House of Worth. This collaboration with the burgeoning Paris haute-couture industry continued into the 20th century and safeguarded the future production of silk textiles in France.

Indirect force identification of air-jet weaving machine infrequency domain (에어제트 직기에 가해지는 가진력 추정)

  • Jung, Eui-Il;Chun, Du-Hwan;No, Suk-Hong
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2006.05a
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    • pp.238-241
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    • 2006
  • For the effective reduction of structural vibration level it is important to obtain the exciting force components. But, sometimes direct force measurement is infeasible due to the geometric limitation of sensor placement. In this case, indirect force identification becomes useful tool for obtaining input force information. In this paper, indirect force technique was applied to air-jet weaving machine and shows some numerical results.

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A Study on the Mechanical Properties to the Weaving Design & Finishing Condition of Wool Fabric (모직물의 제직 및 가공조건에 따른 직물 역학특성 변화에 관한 연구-FAST System에 의한 직물 봉제성 관리-)

  • 홍성철;김승진;김석근
    • Textile Coloration and Finishing
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    • v.12 no.3
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    • pp.159-165
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    • 2000
  • This study surveys the fabric mechanical properties according to the weaving design & finishing conditions of wool fabrics for quality control in the process. For this purpose, 8 kinds of Twill groups and 3 kinds of Plain groups weave fabrics, totally 428 woven fabrics are prepared with change of the yarn count, density and finishing method. Fabric thickness, bending rigidity, extensibility, shear rigidity, formability of the fabrics were measured and discussed with weaving design & finishing conditions.

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Brunei Culture through its Textile Weaving Tradition

  • Wahsalfelah, Siti Norkhalbi Haji
    • SUVANNABHUMI
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    • v.8 no.2
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    • pp.113-129
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    • 2016
  • Brunei Darussalam is a Malay Islamic Monarchy practicing and upholding traditional heritage. Brunei Darussalam is rich with tangible and intangible cultural heritage shaped by its way of life. One of the traditions maintained and preserved in the country is traditional textile weaving. The tradition covers both consumption and production. In the context of consumption, traditional textiles have multiple roles and symbolic meanings. In the context of production, the tradition showcases great skills and the distinctive cultural, social, intellectual, spiritual, and emotional values of the people of Brunei. This paper will explicate the distinctive values and characteristics of Brunei people from the practices of textile weaving.

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