• Title/Summary/Keyword: conducting thread

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Performance of Serial Communication Protocols through Conducting Threads (전도성사를 매체로 한 직렬 통신 프로토콜 성능)

  • Kim, Na-Young;Kim, Hwan;Kim, Juk-Young;Kwon, Young-Mi
    • Journal of Internet Computing and Services
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    • v.12 no.5
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    • pp.21-28
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    • 2011
  • Recently medical and entertainment applications using conducting textile are suggested, but the data of conducting threads are not characterized, classified and verified. Only the data sheet published by manufacturing companies is available. Thus we need to verify the performances of the threading threads in communication. And we need a guideline if the existing communication protocols can be used for the conducting threads communication or the new specific communication protocols have to be developed for the communication. This paper classifies the characteristics of conducting threads made by domestic and overseas companies. Based on the criteria we classified conducting threads into three classes: class A, class B and class C. Further we carried out experiments to verify the adaptability of existing simple serial communication protocols such as RS232. Six different conducting threads are used in experiments and the length of each thread was 0.5m, 1m, 2m and 3m. The data transmission rate and error rate are collected and analyzed. RS485 is very prone to error due to static electricity from human and environment. So it may not be appropriate as long-distance communication protocol up to 12km which is possible in theory. RS232 shows stable and error-less data transmission ability even though every conducting thread didn’t show transmission capability over RS232. USB protocol shows high data rate transmission but the distance cannot be exceeded over 2m. Additionally, USB requires stable power supply. But if the power is supplied through conducting thread, its function is not.

A Study of Futuristic Materials in Contemporary Fashion

  • Kim, Yoon-Hee;Choi, Yoon-Mi
    • International Journal of Costume and Fashion
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    • v.7 no.1
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    • pp.22-31
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    • 2007
  • The systematic study of the future began with curiosity and imagination about the future; a unique trait of human mental effort-and this seems to be based on the idea that the future can be different depending on current choices or effort. In this sense, it would be seemly to encourage more interest and academic study on the progress of future fashion. In this study, we examine recent changes of fashion material; e.g. that which science and technology have more impact and importance in futuristic fashion since the 1990�s. The period analysed is from the1990's to the present and related data from recent fashion collections and fashion books has also been included The current prediction of the future is largely based on what was formed between the 19th Century and the 20th Century which has persisted until now and has been influenced by the view that science will play a bigger role in the future. This is especially reflected in fashion which chiefly represents material culture. New materials used for fashion are strong and permanently durable, in addition to being very light, thin, flexible, hygienic, ecological and comfortable to wear-almost like a second skin. These fashionable new materials roughly function in two different ways according to external and internal characteristics. First, they cause external change. Second, they exemplify or allow new functions. Examples of external change are the use of silver color, achromatic color, metallic material, smooth-to-the-touch shiny material and the use of luminous material. Examples of the extended function of clothing through the use of new materials are the use of conducting thread, the use of special material for blocking & opening and the use of material which changes colors as the surroundings change. These days, the use of new material which changes its appearance is a novelty unique to the fashion world but we also expect to witness the debut of diverse new materials with extended inner functions.

Study on Stress Transition Mechanism and Uniaxial Tensile Characteristics by Tensile Fractured Test of Clamping Part of Membrane Structures (막구조 정착부의 인장파단시험을 통한 신장특성 및 응력전달체계에 관한 연구)

  • Kim, Hee-Kyun;Jeon, Sang-Hyeon;Ha, Chang-Woo;Kim, Jae-Yeol
    • Journal of Korean Association for Spatial Structures
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    • v.20 no.3
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    • pp.91-98
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    • 2020
  • For form stability of membrane structures, membrane material is required to be in tension. Therefore, in planning and maintenance management, the engineer should consider enough about introduction of stress during construction and re-introduction of stress after completion. Clamping part is an important portion with the function for introducing tension into membrane materials, and the function to transmit stress to boundary structures, such as steel frames. Then, the purpose of this research is to clarify stress condition and stress transfer mechanism including clamping part of membrane structures, and to grasp the changing tendency of membrane structures with the passage of time. In this research, following previous one, we perform well-balanced evaluation by conducting tensile fractured tests of clamping part's specimens, and by measuring individually the amount of displacement of not only overall specimen's length but membrane material and clamping part. Thereby, we consider the influence the difference in the hardness of edge rope and the difference in the direction of thread affect modification and fracture load.

Bibliometric Analysis of Research Trends of Acupuncture on Temporomandibular Disorders Treatment over the Past 20 Years (최근 20년간 턱관절 장애의 침 치료 연구에 대한 계량서지학적 분석)

  • Hee-Jun Kim;Jae-Heung Cho
    • Journal of Korean Medicine Rehabilitation
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    • v.34 no.1
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    • pp.49-64
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    • 2024
  • Objectives By bibliographically analyzing acupuncture treatment studies for temporomandibular disorders over the past 20 years, we found an overview of global trends and a new perspective on future research directions. Methods We searched on the Web of Science webpage through the formula (TS=[temporomandibular] OR TS=[craniomandibular] OR TS=[jaw]) AND (TS=[*acupuncture] OR TS=[dry needl*] OR TS=[warm needl*] OR TS=[thread embed*]) AND (PY=[2003-2022]). And it was analyzed by year, research field, academic journal, country, research institute, author, and keyword. Results 194 papers were searched, and 92 papers were finally selected. The number of papers published over the past 20 years has been on the rise. Research has been the most active in the field of Dentistry Oral Surgery Medicine. Brazil published the most papers. And by institution, Universidade de Sao Paulo published the most papers. Among the authors, Fernández-de-las-Peñas has published the most papers. In the analysis by keyword, the top five keywords were temporomandibular joint disorder, acupuncture, myofascial pain, pain and management. Conclusions This study will provide useful guidelines for setting the direction of research by referring to the research status and keyword analysis when conducting research on the acupuncture on temporomandibular disorder in the future.

CPVC Valve Tightening Torque Impact Sockets on the Leaks (CPVC 밸브소켓 체결토크가 누수발생에 미치는 영향)

  • Lim, Chun-Ki;Baek, Eun-Sun
    • Fire Science and Engineering
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    • v.30 no.4
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    • pp.46-58
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    • 2016
  • In this study, the stress applied to screw section, strain, displacement, von Mises stress, and the compression stress applied to the rubber packing for watertightness are estimated with computer simulation when the tightening torque of valve socket is in the range of $10{\sim}130N{\cdot}m$ in order to analyze the influence of valve socket screw section in accordance with the excessive tightening which is supposed to be the cause of water leakage from the synthetic resin piping for fire fighting application of sprinkler equipment, and for the sake of verifying this, adequate value of tightening torque and the value of the compression stress of rubber packing are investigated by examining the number of connected thread for each tightening torque, the deformation state of valve socket and rubber packing and conducting the water hammering test. The result of this test is expected to be utilized as the data required for revising the standard or technical criteria to prevent the water leakage of the synthetic resin piping for fire fighting application.