• 제목/요약/키워드: Computer-aided Research

검색결과 514건 처리시간 0.029초

CAW(Computer-Aided Weaving) 시스템을 이용한 도비 직조디자인 연구 (A study on Dobby Weave Design using Computer-Aided Weaving System)

  • 송하영
    • 한국의류산업학회지
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    • 제12권3호
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    • pp.272-278
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    • 2010
  • The purpose of this study was to research about Dobby weave design using Computer-Aided Weaving System. For performing this design study, first, it was researched the characteristics of the classified woven fabrics, weaving processing, structure of Dobby loom, and Computer-Aided Dobby Weaving system theoretically. To develop Dobby woven design, Patternland Weave Simulator(U.S.A) for computer weave system was used. Among the developed Dobby woven designs by computer weaving system, mainly three of them were selected and woven into Dobby loom. To see the visual image of the fabric end-use, some of the scanned Dobby fabrics were simulated to the three-dimensional virtual images by Alias CAD system. The result of this study can be summarized as follows. Before the step of weaving Dobby fabrics on the woven design works, Computer-Aided Weaving system can be done very easily to apply the design step of Dobby woven fabrics, specially in case of the complicated woven structure. Also the usage of the simulation CAD system in visual image of the final products, ultimately can be saved cost and developed the higher value-added goods in more response to consumer demands.

CAW(Computer-Aided Weaving) 시스템을 활용한 Supplementary Warp의 직조디자인 연구 (A Study on Weave Design of Supplementary Warp using Computer-Aided Weaving System)

  • 송하영
    • 한국의상디자인학회지
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    • 제12권3호
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    • pp.43-55
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    • 2010
  • The major advantages to use CAD System are that it reduce time and effort to manufacture products, and also can demonstrate the condition of the final product prior to the actual manufacturing process of the selected design using the simulation programs in CAD system. Specially in weave design, for use as Computer-Aided Weaving system, the complicated Dobby weave can figured out easily through calculating the complex weave plans of multi shafts. As to one of dobby weave structures, Supplementary warp is the warp threads which are in addition to the regular warps of the woven fabrics, and used for decorating the band or expressing some patterns. The purpose of this study is to research the weave design of Supplementary warp using Computer-Aided Weaving system, which is dobby weave design program of Weave Point. For performing this design study, it was researched the classified woven fabrics depending upon weaving processing, Computer-Aided Weaving system, and the characteristic of Supplementary warp fabrics. On the basis of the theoretical research, Supplementary warp was worked for the 24-shafts AVL computer dobby loom that applied to the various patterned images. The design work was done by Weave Point program of dobby weave, and simulated to fabrics before woven into the computer dobby loom. To see the visual images of fashion items, these simulated bobby fabrics were processed by three-dimension modeling through YoungWoo CNI CAD system. All the patterns of the Supplementary warp in this study could be applied for decorating the fashion clothing and accessories.

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인체동작의 컴퓨터 분석모델 (A Computer-aided Analysis and Model of Human Motion)

  • 김영길
    • 한국국방경영분석학회지
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    • 제9권2호
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    • pp.45-55
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    • 1983
  • Film data photographed by Motor Drive Camera were gathered and recorded in the FM Tape Recorder via computer-aided Location Analyzer and Voltage Generator. The recorded analogue data are converted into digital voltage values corresponding to the location of 14 landmarks by Analog-to-Digital Converter attached to digital computer. Using these converted values, the human motions were reproduced by CalComp Plotter and computer screen. This author concludes that any human motions can be analyzed by computer and we can find some methods of improvements of motions in work places, sports science, or operations of military equipments.

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The application of "bone window technique" using piezoelectric saws and a CAD/CAM-guided surgical stent in endodontic microsurgery on a mandibular molar case

  • Kim, Ukseong;Kim, Sunil;Kim, Euiseong
    • Restorative Dentistry and Endodontics
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    • 제45권3호
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    • pp.27.1-27.9
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    • 2020
  • Apical surgery for a mandibular molar is still challenging for many reasons. This report describes the applications of computer-guided cortical 'bone-window technique' using piezoelectric saws that prevented any nerve damage in performing endodontic microsurgery of a mandibular molar. A 49-year-old woman presented with gumboil on tooth #36 (previously endodontically treated tooth) and was diagnosed with chronic apical abscess. Periapical lesions were confirmed using cone-beam computed tomography (CBCT). Endodontic microsurgery for the mesial and distal roots of tooth #36 was planned. Following the transfer of data of the CBCT images and the scanned cast to an implant surgical planning program, data from both devices were merged. A surgical stent was designed, on the superimposed three-dimensional model, to guide the preparation of a cortical window on the buccal side of tooth #36. Endodontic microsurgery was performed with a printed surgical template. Minimal osteotomy was required and preservation of the buccal cortical plate rendered this endodontic surgery less traumatic. No postoperative complications such as mental nerve damage were reported. Window technique guided by a computer-aided design/computer-aided manufacture based surgical template can be considerably useful in endodontic microsurgery in complicated cases.

외고정법을 이용한 컴퓨터이용 및 로봇지원 골절수술 및 골변형교 정술에 대한 연구 (Research on Computer-aided and Robotic-assisted Surgery of Fracture Reduction and Bone Deformity Correction under External fixation)

  • 김윤혁
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2005년도 추계학술대회 논문집
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    • pp.131-134
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    • 2005
  • This paper presents a computer-aided simulation and robotic-assisted execution technology of external fixation method to achieve fracture reduction and deformity correction in long bones. Combining the kinematic analysis with a graphic model of the tibia and the fixator allowed 3D simulation and visualization of the adjustments required to reduce fracture or correct bone deformity as a pre-operative planning tool. The developed robot model provided accurate deformity correction with small residual deformity based on the results of the planning. By incorporating the robot model with image-guided system and computer-aided planning, the integrated system could be useful for computer-aided pre-operative planning and robotic-assisted execution in fracture treatment and bone deformity surgery.

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Development of human tumor necrosis factor-α muteins with improved therapeutic potential

  • Jang, Seung-Hwan;Kim, Hyo-Jin;Cho, Kwang-Hwi;Shin, Hang-Cheol
    • BMB Reports
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    • 제42권5호
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    • pp.260-264
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    • 2009
  • Tumor necrosis factor-$\alpha$ (TNF-$\alpha$) exhibits cytotoxicity towards various tumor cells in vitro and induces apoptotic necrosis in transplanted tumors in vivo. It also shows severe toxicity when used systemically for the treatment of cancer patients, hampering the development of TNF-$\alpha$ as a potential anticancer drug. In order to understand the structure-function relation of TNF-$\alpha$ with respect to receptor binding, we selected four regions on the bottom of the TNF-$\alpha$ trimer that are in close contact with the receptor and carried out mutagenesis studies and computational modeling. From the study, various TNF-$\alpha$ muteins with a high therapeutic index were identified. These results will provide a structural basis for the design of highly potent TNF-$\alpha$ for therapeutic purposes. By conjugating TNF-$\alpha$ muteins with a high therapeutic index to a fusion partner, which targets a marker of angiogenesis, it could be possible to develop TNF-$\alpha$ based anticancer drugs.

임상가를 위한 특집 2 - CAD/CAM 기술을 이용한 총의치 제작의 현재와 전망 (Current status and future perspectives of CAD/CAM fabricated complete denture)

  • 박찬진
    • 대한치과의사협회지
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    • 제52권6호
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    • pp.346-353
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    • 2014
  • Currently, computer-aided technology becomes one of main issues in clinical dentistry. About 25 years ago, the development of dental CAD/CAM systems for the fabrication of crowns and fixed partial dentures leads to be able to fabricate complete denture today. The fabrication of milled complete denture prostheses with digital scanning technology may decrease the number of patient appointments. However, the precise tooth arrangement and evaluation by patient is not promising relatively. The purpose of this review was to analyze the existing literature on computer aided technology for fabricating complete denture with historical background, current status, and future perspectives. In addition, two available commercial systems were introduced.

CAD(ComputerAidedDiagnosis)의 다차원적인 의사결정지원 시스템 Modeling (Modeling of Multi-Dimensional Decision Support System for CAD(Computer Aided Diagnosis))

  • 이상복;왕지남
    • 한국경영과학회:학술대회논문집
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    • 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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    • pp.599-602
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    • 2004
  • 최근 국내 여성의 유방암 발생율은 1위를 차지하며 그 비율 또한 나날이 늘어가고 있는 추세이다. 하지만 유방암은 다른 암에 비해 5년간 관찰 생존율이 약 76%로 갑상선에 이어 두 번째의 생존율을 보이며, 이는 조기발견의 중요성을 다시 한번 상기시키게 한다. 하지만 국내에서 사용되는 유방암 조기검진 방법에는 Mammography(유방촬영술)와 초음파 진단 두 가지가 주를 이루고 있으나 촬영과정 및 장비에 따른 오차로 인한 객관화된 정보생성 부족 및 전달의 부족으로 문제점이 대두되고 있다. 본 연구에서는 Mamography 및 초음파 유방 진단술을 이용하여 전문의의 의사결정에 도움을 줄 수 있는 CAD(Computer Aided Diagnosis) 시스템의 유방암 진단의 특징을 이용, 전문의 관점의 모델링을 기술해보고자 한다.

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금형가공 및 측정을 위한 통합 Rule-based CAPP 시스템 개발 (Development of integrated Rule-based CAPP system for Mold Manufacturing and Inspection)

  • 윤길상;최진화;조명우;이홍희;서태일
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.1235-1238
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    • 2003
  • A rule-based CAPP(computer aided process planning) system is proposed in this research to develop integrated manufacturing process of machining and inspection using OMM(On-Machine Measurement) device. Generally workpiece composed of many primitive form features. This features are determined optimum inspection sequence by analyzing the feature information such as features-relationship, probe approach direction and etc. Proposed paper is more efficient method of CAIP(computer aided inspection planning) considered machining process

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Joining of the Sinter Hardening Pully by Sinter Brazing

  • Cheng, Chao-Hsu;Lin, Yi-Ching;Lin, Yan-Cherng;Hwang, Lih-Ren
    • 한국분말야금학회:학술대회논문집
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    • 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part2
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    • pp.1002-1003
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    • 2006
  • This research mainly focuses on the development of sinter brazing technology for improving the process related to belt pulley made by sinter hardening. As the machine process of belt pulley takes up more than half of the total manufacturing hours, we propose changing the process to pulley groove brazed and bonded with pulley disc by applying sinter brazing to belt pulley. With the new process, the belt pulley is expected to reduce manufacturing cost to 70% of the original process by applying the sinter brazing technology; and the belt pulley bound by sinter brazing only loses 10% bonding strength compared with the original process.

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