• Title/Summary/Keyword: process of realization

Search Result 579, Processing Time 0.035 seconds

System Realization and Video Watermark with Spatial and interframe Information (공간 및 프레임간 정보를 이용한 비디오 워터마크와 시스템 구현에 관한 연구)

  • Kim, Ja-Hwan;Ryu, Kwang-Ryol
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2007.06a
    • /
    • pp.157-160
    • /
    • 2007
  • System realization and video watermarking using spatial and interframe information is presented in this paper. The system is constructed with DSP processor to process compression and watermark algorithm with real time. Video watermark algorithm is used the watermark insertion using the spatial and interframe. As a results, the processing time of D1 image per frame is 32.1msec in DSP.

  • PDF

Development of the Automatic Fine Polishing System (경면 다듬질을 위한 자동화 장치 개발)

  • 박균명;장진희;한창수
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 1993.10a
    • /
    • pp.389-394
    • /
    • 1993
  • Die making process is classified into design,manufacturing,polishing,assembly, and performance test. Die polishing is not a machining process by cutting edge of tool, but it is finishing by relative cutting movement under the surface contact between grinding particles and workpiece, and this process comprised 30~40% of total manufacturing hours. However, die polishing process is still performed by the skilled workers. Now a days, it is very difficult to secure skilled workers due to the hardworking environment and this situation will be getting worse in the future which has great difficulty of dies and molds industries.This process has the common problem on the elimination of tedious manual polishing among the tool making industries. Therefore this study is aimed at the development of an automatic polishing attachment which could be attached onthe spindle of CNC machine tool and controlled by the NC program data created by CAD/CAM system. As a result, this study will contribute the realization of automatic fine polishing process and improvement of quality level of dies and molds.

  • PDF

A study on the behaviors of chatter in milling operation (밀링가공시의 채터현상 연구)

  • Kim, Y.K.;Yoon, M.C.;Ha, M.K.;Sim, S.B.
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.1 no.1
    • /
    • pp.123-132
    • /
    • 2002
  • In this study, the static and dynamic characteristics of endmilling process was modelled and the analytic realization of chatter mechanism was discussed. In this regard, We have discussed on the comparative assessment of recursive time series modeling algorithms that can represent the machining process and detect the abnormal machining behaviors in precision endmilling operation. In this study, simulation and experimental work were performed to show the malfunctional behaviors. For this purpose, new recursive least square method (RLSM) were adopted for the on-line system identification and monitoring of a machining process, we can apply these new algorithms in real process for detection of abnormal chatter. Also, The stability lobe of chatter was analysed by varying parameter of cutting dynamices in regenerative chatter mechanics.

  • PDF

A New Manufacturing Process for the Ring Plate of Automobile Fuel Tank (자동차 연료탱크용 링 플레이트의 신 제조공법)

  • Chae, M.S.;Lim, Y.H.;Suh, Y.S.;Kim, Y.S.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
    • /
    • 2008.05a
    • /
    • pp.311-315
    • /
    • 2008
  • Currently, in automobile industry. the efforts to reduce the manufacturing cost by changing the process of manufacturing are continually performed. In this paper, we proposed a new manufacturing process, the roll bending of a ring plate of automotive fuel tank instead of conventional press blanking process to reduce material loss and manufacturing cost. Finite element analysis was used to optimize the roll bending process to assure rectangular cross-section of the ring plate. Also, spring-back analysis after the roll bending was performed and dimension of the bending die considering spring-back was analyzed. Finally, we verified a possibility for realization of the proposed method shape with prototypes.

  • PDF

High Efficiency Photoresist Strip Technology by using the Ozone/Napor Mixture (오존/증기 혼합물을 이용한 고효율 반도체 감광막 제거기술)

  • Son, Young-Su;Ham, Sang-Yong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2006.11a
    • /
    • pp.22-23
    • /
    • 2006
  • A process for removal of photoresist(PR) m semiconductor manufacturing using water vapor with ozone is presented. For the realization of the ozone/vapor mixture process, high concentration ozone generator and process facilities have developed. As a result of the silicon wafer PR strip test, we confirmed the high efficiency PR strip rates of 400nm/mm or more at the ozone concentration of 16wt%/$O_2$. The ozone/vapor mixture process is more effective than the ozonized water Immersion process.

  • PDF

A Study on Diagnostics of Machining System with ARMA Modeling and Spectrum Analysis (ARMA 모델링과 스펙트럼분석법에 의한 가공시스템의 진단에 관한 연구)

  • 윤문철;조현덕;김성근
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.8 no.3
    • /
    • pp.42-51
    • /
    • 1999
  • An experimental modeling of cutting and structural dynamics and the on-line detection of malfunction process is substantial not only for the investigation of the static and dynamic characteristics of cutting process but also for the analytic realization of diagnostic systems. In this regard, We have discussed on the comparative assessment of two recursive time series modeling algorithms that can represent the machining process and detect the abnormal machining behaviors in precision round shape machining such as turning, drilling and boring in mold and die making. In this study, simulation and experimental work were performed to show the malfunctioned behaviors. For this purpose, two new recursive approach (REIVM, RLSM) were adopted fur the on-line system identification and monitoring of a machining process, we can apply these new algorithm in real process for the detection of abnormal machining behaviors such as chipping, chatter, wear and round shape lobe waviness.

  • PDF

Research on the 3-Dimensional Simulation of Assembly Process in Shipbuilding (선박조립과정의 3차원 시뮬레이션에 관한 연구)

  • 박주용;차태인;강현진;김혜정
    • Proceedings of the Korea Society for Simulation Conference
    • /
    • 2002.05a
    • /
    • pp.11-14
    • /
    • 2002
  • Bulkiness and complexity of a ship structure make it impossible to examine the process of shipbuilding with a prototype in advance. The simulation provides a possibility that the shipbuilding process can be checked and optimized in the virtual world. The realization of the simulated result in the real world gives the higher quality and productivity in shipbuilding. For the effective simulation, the shipbuilding process was analyzed on the viewpoint of the object-oriented methodology and modeled by using the UML. The implementation of simulation was done with the excellent simulation tools, CATIA and DELMIA. The result of this research showed the way to the optimization of process and the improvement of productivity in shipbuilding.

  • PDF

A Study on the Clothes of Shamanistic Ritual(I) (한국무속의예 복식의 연구(I))

  • 양미경;김진구
    • Journal of the Korean Society of Costume
    • /
    • v.20
    • /
    • pp.83-91
    • /
    • 1993
  • Signifying clothes can be defined as a process in which a clothes obtains a symbolic meaning by confining its use and purpose. In this paper we catagorize the process of signifying clothes that appears in the Byongkut as follows : first removing the clothes, secondly putting on the clothes, and thirdly burning off the clothes. Removing the clothes is a process of dramatic realization and clearly shows proven facts about the things that will occur in the process. Putting on the clothes is a process of falsified expression in which the interest is transferred from the person who wears the clothes to the clothes itself by the shaman's insinuation who leads an interpretation about the clothes. Buring off the clothes is a pro-cess of mystification in which the end of Byongkut is sublimated mistiriously by making the partici-pants believe with the burning that the clothes and the diseases have been curred, and therefore, the ritual is kept from spoiling. The clothes used in Byongkut that religious belief and belief system are expressed through behavior style, and that supernatural power is designed to reveal is related with the various aspects of symbolic life indicated by the clothes.

  • PDF

A Review of the Reflection of Residents' Opinions in Reconstruction-Planned Apartments - A Case Study of Public Housing in Yongbong-dong, Gwangju (재건축 예정 아파트 거주민의 의사반영에 대한 결과 인식에 관한 연구 -광주광역시 용봉동 국민주택단지를 중심으로-)

  • 유창균;위태경;강호성;조용준
    • Journal of the Korean housing association
    • /
    • v.13 no.4
    • /
    • pp.67-73
    • /
    • 2002
  • The purpose of this study is to investigate the reflection degree of residents' opinions and their participation, on the premise that the reconstruction of apartments is a process of the concrete realization of residents' dwelling needs and of the recreation of living spaces. Here are some of results of this research; Although apartment residents who have experienced the process of reconstruction have a great desire to participate and a wide range of participation, the proper procedure of participation is not prepared and the contents of reconstruction is not fully understood. And the residents have the different opinions on 'height and mass of apartment' and 'amount of compensation and payment'. Meanwhile, the residents believe that all of them should take part in the participation process and some government interventions are needed. Accordingly, various ways for resident participation in the process of reconstruction are to be provided and new techniques for encouraging public participation are to be sought.

A Study on the Systematic, Intuitive Approach for Fashion Design (패션 디자인을 위한 체계적, 직관적 접근방법에 관한 고찰)

  • 최윤미
    • The Research Journal of the Costume Culture
    • /
    • v.5 no.1
    • /
    • pp.71-83
    • /
    • 1997
  • It is the important situation that the fashion industry is faced to enormous changes in the nation and worldwide market. To cope with this situations, it is necessary to clarify that the concept of fashion design and its process. This study was conducted as followings : 1. Fashion design is the process of problem solving including the steps of understanding problem, visualizing the image of a design concept. 2. The systematic and intuitive approach is harmonized to solve the process of fashion design. 3. The step of understanding problem is consist of the analysis of environments, the explanation of problem, the determination of purposes, the definition of problem and the visualizing the image of a design concept. 4. In the step of the visualizing the image of a design concept, the intuitive approaches can be clarifies as the importance of start, the step by step process, the determination of a design concept, the fixations of an image, the image realization through real objects, the diminution a difference between a concept and a visualizing the image and the necessity of exercises.

  • PDF