• Title/Summary/Keyword: Using of techniques

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Development of modern bag design using cultural content from Baekje - Focusing on laser-cutting techniques - (백제 문화콘텐츠의 현대적 활용을 위한 가방 디자인 개발 - 레이저커팅 기법을 중심으로-)

  • Ha, Seung Yeon
    • The Research Journal of the Costume Culture
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    • v.28 no.6
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    • pp.738-754
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    • 2020
  • As a cultural feature of, the relics of the Royal Tomb of King Muryeong are suitable design content for applying with sophisticated production and delicate molding laser cutting techniques. The purpose of this study is to develop modern bag designs using relics of the Royal Tomb of King Muryeong of Baekje using laser-cutting techniques. First, the historical background and meaning of Baekje's cultural content were explored. Second, the principle of laser-cutting techniques were explored, laser-cutting techniques applied to modern fashion and bag design were examined, and bag design characteristics were analyzed. Third, based on prior research, the criteria for the development of bag design, from which eight bag design were developed that combine modern popularity and functionality utilizing Baekje cultural content and using laser-cutting techniques to apply the textile design developed by researchers in 2013 (modified to match laser-cutting techniques). The research results show that bag were clutch, tote, shoulder, and mini. Gold, silver, brown, beige, and navy colors were arranged, based on black/white contrast. Cow, lambskin, washed snakeskin, mesh, and Saffiano leather were used. For the pattern-applying technique, this study showed that a new digital technique, which is laser-cutting techniques could be combined with contemporary bag designs. Moreover, a bag design was developed that has a modern sense and functionality as well as Korean formativeness, which is significant.

Rule-based Semantic Search Techniques for Knowledge Commerce Services (지식 거래 서비스를 위한 규칙기반 시맨틱 검색 기법)

  • Song, Sung Kwang;Kim, Young Ji;Woo, Yong Tae
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.6 no.1
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    • pp.91-103
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    • 2010
  • This paper introduces efficient rule-based semantic search techniques to ontology-based knowledge commerce services. Primarily, the search techniques presented in this paper define rules of reasoning that are required for users to search using the concept of ontology, multiple characteristics, relations among concepts and data type. In addition, based on the defined rules, the rule-based reasoning techniques search ontology for knowledge commerce services. This paper explains the conversion rules of query which convert user's query language into semantic search words, and transitivity rules which enable users to search related tags, knowledge products and users. Rule-based sematic search techniques are also presented; these techniques comprise knowledge search modules that search ontology using validity examination of queries, query conversion modules for standardization and expansion of search words and rule-based reasoning. The techniques described in this paper can be applied to sematic knowledge search systems using tags, since transitivity reasoning, which uses tags, knowledge products, and relations among people, is possible. In addition, as related users can be searched using related tags, the techniques can also be employed to establish collaboration models or semantic communities.

Analysis of Output Characteristics for the Resonant DC Link Inverter Using PWM Inverter Modulation Methods (인버터 PWM 방식을 이용한 공진형 직류 링크 인버터의 출력 특성 해석)

  • 김윤호;윤병도;이병순
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.41 no.6
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    • pp.615-624
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    • 1992
  • For the operation of the resonant DC link inverters, only limited number of modulation techniques such as the delta modulation and instantaneous current control techniques have been suggested. However, these modulation techniques have some limitations in practical operation. In this paper, the application of conventional inverter modulation techniques is suggested for the control of the resonant DC link inverter. The harmonic analysis results are presented. The results show that these modulation techniques offer good output characteristics similar to conventional inverter PWM techniques for the operation of the resonant DC link inverter. This implies that not only the delta modulation technique and instantaneous current control techniques but also various other modulation techniques can be applied to the operation of the resonant DC link inverter. This also indicates that open loop control as well as closed loop control can be used for the operation of the resonant inverter. The resonant DC link inverter with various modulation strategies is implemented using V-40 microprocessors.

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The Resource Planning of Painting Lines in Korean Motor Company Using Simulation Techniques (시뮬레이션에 의한 차체 도장 검사 라인의 자원 할당)

  • 박병태;박재현;서지한
    • Proceedings of the Safety Management and Science Conference
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    • 1999.11a
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    • pp.515-523
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    • 1999
  • This study is resource planning of painting lines in Korean motor company using simulation techniques. The painting lines have bottle neck problems that is considered production capacity, number of lines and so on. The alternative solutions is decided by the result of simulation techniques. This Paper is focused on resource planning using simulation techniques.

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The Effects of Science Lessons using Six Thinking Hats techniques on Creativity and Science Academic Achievement (육색사고기법을 활용한 과학수업이 창의성 및 과학 학업성취도에 미치는 효과)

  • Lee, Yong-Seob;Kang, Jung-Mun
    • Journal of the Korean Society of Earth Science Education
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    • v.7 no.1
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    • pp.34-42
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    • 2014
  • The purpose of this study was to examine the effects on the effects of science lessons using six thinking hats techniques on creativity and science academic achievement. To verify the research problem, the subject of this study was fourth-grade students selected from four classes of an elementary school located in Busan. For ten weeks, the experimental group of 40 students was taught using the six thinking hats techniques. The comparative group also of 40 students, was taught in normal classes which used a Text-book. Children were given a creativity test and academic achievement test in science to measure the effects on six thinking hats techniques. Likert scales were used to gather students feedbacks on creativity and science academic achievement. Through these procedures, the following results were obtained: First, the six thinking hats techniques had a more effect on creativity than the normal classes, where a text-book was used. Second, the six thinking hats techniques could be seen to be effective in improving the student's academic achievements in science than the normal classes which used a Text-book. Third, the result of the student recognition investigation, we could know that the students showed lots of interest in the science lessons using six thinking hats techniques, and they were able to understand the scientific theories. As a result, the elementary science class with six thinking hats techniques had the effects of developing creativity and science academic achievement. It means the science class with six thinking hats techniques has potential possibilities and value to develop creativity and science academic achievement.

Characteristic Changes of Layered Techniques in the Hussein Chalayan's Collections (후세인 샬라얀 컬렉션에 나타난 레이어드 기법의 변화 특성 연구)

  • Koo, Mi-Ji
    • Journal of the Korea Fashion and Costume Design Association
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    • v.9 no.3
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    • pp.221-230
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    • 2007
  • This research was focused on the changes of layered techniques in Hussein Chalayan's collections. For this purpose, the layered techniques in 134 works from Chalayan's collections, 97S/S to 06S/S, which were obtained from fashion magazines and fashion internet site, were analyzed and classified into 15 groups. Layered techniques in his works apparently expressed his philosophy about deconstruction. Multilayered feeling was given through using various techniques such as one layer clothing which was showed like multi-layered clothing. Others were multi-layer clothing which felt like one layer, breaking the stereotyped line of clothing into atypical construction and using various materials or constructive lines which made the optical feeling like one layer or multi-layer clothing, and so on. These layered techniques in Chalayan's collections were differentiated into several categories, such as techniques which were revealed in every collections, techniques which were differentiated from one another collections, techniques which were continuously showed through three collections for connection with each collection, techniques which were used only for Spring/Summer season, and techniques which were uniquely showed in early collection or recent collections.

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On the Use of Finite Rotation Angles for Spacecraft Attitude Control

  • Kim, Chang Joo;Hur, Sung Wook;Ko, Joon Soo
    • International Journal of Aeronautical and Space Sciences
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    • v.18 no.2
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    • pp.300-314
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    • 2017
  • This paper examines finite rotation angle (FRA) applications for spacecraft attitude control. The coordinate transformation matrix and the attitude kinematics represented by FRAs are introduced. The interpolation techniques for the angular orientations are thoroughly investigated using the FRAs and the results are compared to those using traditional methods. The paper proposes trajectory description techniques by using extremely smooth polynomial functions of time, which can describe point-to-point attitude maneuvers in a realizable and accurate manner with the help of unique FRA features. In addition, new controller design techniques using the FRAs are developed by combining the proposed interpolation techniques with a model predictive control framework. The proposed techniques are validated through their attitude control applications for an aggressive point-to-point maneuver. Conclusively, the FRAs provide much more flexibility than quaternions and Euler angles when describing kinematics, generating trajectories, and designing attitude controllers for spacecraft.

A Study on Patterning Techniques by sliced unit with square woods's color bars (각목 색상 배치에 의한 문양막대의 횡절단 무늬편을 이용한 문양구성 연구)

  • Kim, Ji-Geon
    • Journal of the Korea Furniture Society
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    • v.20 no.5
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    • pp.431-439
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    • 2009
  • When we look at the pattern techniques of wooden furniture in the 19th century Joeson Dynasty, we see that furniture patterns in the main living room were showy and colorful while furniture patterns in the library room, where noble men used to study, were natural and moderate, retaining the actual color of the material without any artificial coloring. Even the serial patterns in the Hwe-Jang technique, Which were used rarely, used moderate techniques. such as weaving in patterns with colorless woods - willow and black persimmon ets. - rather than using excessive techniques. However, considering the marquetry&intarsia technique of ceramic and the silver string intarsia technique of metal then current, wood work must also have been technically advanced. Korean modern wood furniture needs remedies to improve the standard of sound wood work techniques. This study shows that pattern unit production, composition techniques, and color effects etc. Using colored patterns bars, by improving the pattern composition techniques of Marquetry&Intarsia, can be substituted for the production logic of modern manufactured furniture.

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A Comparative Study of Frequency Estimation Techniques using High Speed FIR Filter and Phasor Angle between Two Phasors (고속 FIR 필터와 두 페이저 위상을 이용한 주파수 추정 알고리즘의 비교 연구)

  • Park, Chul-Won
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.58 no.2
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    • pp.122-129
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    • 2009
  • Frequency is an important operating parameter of a power system. It is essential that the frequency of a power system be maintained very close to its nominal frequency. And frequency measurement devices have need to measure a fast and accurate of frequency using voltage signals. This paper proposes a comparative study of frequency estimation techniques using the high speed FIR filter based algorithm, the DFT filter based algorithm using phasor angle between two phasors, and positive sequence component based algorithm using the half angle between two successive positions of phasor. The discussed three techniques have been formed through numerical manipulation of a discrete system. The proposed techniques have been tested using signals obtained from selected power system model using ATP simulation package. Some test results are shown in this paper.

Research Analysis of the 『醫方類聚』 Do-In Section - Based on the Original Text and Its Interpretation – (『의방류취(醫方類聚)』 도인법(導引法) 연구 - 원문과 어석을 중심으로 -)

  • PARK Hyung-jun;CHUNG Won-seok;CHA Woong-seok
    • The Journal of Korean Medical History
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    • v.36 no.2
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    • pp.61-76
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    • 2023
  • Objectives: This study was designed to introduce distinctive Do-In techniques among the many found in the book 'Euibangyoochi'. Methods: 'Do-In section' of Euibangyoochi was translated, and distinctive Do-In techniques were extracted from it. These techniques were categorized as 'using specific actions', 'using vocal sounds'. Results: The Do-In methods in the 'Do-In section' of Euibangyoochi were categorized. The first category includes Do-In methods that involve specific actions, such as 'Myung Chun Go', 'Go-chi Beob', 'Ak-go Beob', 'Gun-yok Beob', and 'An-ma Beob'. The second category is the Do-In technique using vocal sounds, known as 'Yuk Ja Gyeol'. Conclusion: The 'Do-In section' of Euibangyoochi contains numerous Do-In techniques recorded in various texts. Among them, techniques with specified names were extracted and categorized. While there are currently no studies on the actual effects of these techniques, it is hoped that future research can validate their efficacy.