• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2007년도 춘계종합학술대회
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• pp.157-160
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• 2007

본 논문은 비디오 워터마킹 알고리즘을 적용한 비디오 시스템 구현에 관한 것이다. 시스템은 압축 알고리즘과 워터마킹 알고리즘을 실시간으로 처리하기 위해 DSP 프로세서를 기본으로 하여 구성하였다. 비디오 워터마킹 알고리즘은 공간영역과 프레임간의 정보를 이용하여 워터마크를 삽입하는 방법을 사용하였다. 실험결과, DSP에서 D1 영상 한 프레임 당 처리 시간이 약 32.1ms 소요되었다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1993년도 추계학술대회 논문집
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• pp.389-394
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• 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.

• 한국기계가공학회지
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• 제1권1호
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• pp.123-132
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• 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.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2008년도 춘계학술대회 논문집
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• pp.311-315
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• 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.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 추계학술대회 논문집 Vol.19
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• pp.22-23
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• 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.

• 한국생산제조학회지
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• 제8권3호
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• pp.42-51
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• 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.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2002년도 춘계학술대회논문집
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• pp.11-14
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• 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.

• 복식
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• 제20권
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• pp.83-91
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• 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.

• 한국주거학회논문집
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• 제13권4호
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• pp.67-73
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• 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.

• 복식문화연구
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• 제5권1호
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• pp.71-83
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• 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.