• 제목/요약/키워드: experiment method

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리드프레임 타발 공정의 최적 전단 조건의 선정 (Determination of Optimal Process Condition for the Precision Blanking of Lend Frame)

  • 서의권;임상헌;심현보
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2001년도 추계학술대회 논문집
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    • pp.71-74
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    • 2001
  • Using the Taguchi method, optimum process condition of lead frame blanking has been determined in the point of view of shape of blanked profile. As the main process parameters, clearance, strip holding pressure and bridge width are selected. According to the orthogonal array table, three levels of experiment have been carried out for each factors. The optimal blanking condition is analyzed with the SN ratio. It has been verified that the optimal process condition can be determined with a combination of basic blanking experiment and experiment design method. Both the effect of each factors and gain can be judged in the quantitative manners from the analysis of SN ratio.

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리드 프레임 타발공정의 전단특성에 관한 연구(II) - 최적 전단 조건의 선정 (A Study on the Characteristics of the Precision Blanking of Lead Frame (II): Determination of Optimal Process Condition)

  • 서의권;임상헌;심현보
    • 소성∙가공
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    • 제11권2호
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    • pp.132-137
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    • 2002
  • Using the Taguchi method, optimum process condition of lead frame blanking has been determined in the point of view of shape of blanked profile. As the main process parameters, clearance, strip holding pressure and bridge width are selected. According to the orthogonal array table, three levels of experiment have been carried out for each factor. The optimal blanking condition is analyzed with the SN ratio. It has been verified that the optimal Process condition can be determined with a combination of basic blanking experiment and experiment design method. Both the effect of each factor and gain can be judged in the quantitative manner from the analysis of SN ratio.

Type-II stepwise progressive censoring

  • Bayat, Mohammad;Torabi, Hamzeh
    • Communications for Statistical Applications and Methods
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    • 제23권1호
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    • pp.57-70
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    • 2016
  • Type-II progressive censoring is one of the censoring methods frequently used in clinical studies, reliability trials, quality control of products and industrial experiments. Sometimes in Type-II progressive censoring experiments, the failure rate is low so the waiting time to observe the $m^{th}$ failure will be very long; however, the experimenter may have to terminate the experiment before a predetermined time. In this article, if two generalized types of Type-II progressive censoring are reminded, we then make some changes in the removal method of Type-II progressive censoring such that without reducing the deduction quality, the termination time of the experiment decreases. This can be done with decreasing withdraws throughout the steps of the experiment with a special reasonable method. A simulation study is done and the results are tabulated at the end of this article for a comparison between introduced method and Type-II progressive censoring.

전처리 및 건조방법에 따른 가시오갈피생약재의 품질변화 (Quality Changes in Eleutherococcus senticosus Cortex Processed by Different Pretreatment and Drying Method)

  • 정햇님;임상현;김희연;김경대;박유화;함헌주;이광재;김경희;안영섭
    • 한국약용작물학회지
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    • 제18권2호
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    • pp.98-104
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    • 2010
  • Eleuthero(Eleutherococcus senticosus Maxim.) cortex is well known as a herb medicine for tonic. This study was performed to improve the quality of dried E. senticosus cortex. Investigation of quality factor and contents of efficient compounds under different steaming times and drying methods were performed to determine the proper processing and drying conditions of Eleuthero cortex harvested on March in annual stems. The proper steaming time for peeling bark to make high quality Eleuthero cortex took less than 20 mins. Eleutheroside B and E contents among drying methods were significantly different at 5% level DMRT. The $50^{\circ}C$ heat drying was the most advisable condition for drying, when drying and keeping contents of effective compounds.

원형 매핑 모델을 사용하는 컴퓨터 직접 영상 재생 방식 (Computational integral imaging reconstruction method using round-type mapping model)

  • 신동학;김남우;이준재;이병국
    • 한국광학회:학술대회논문집
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    • 한국광학회 2007년도 하계학술발표회 논문집
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    • pp.259-260
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    • 2007
  • In this paper, we propose a novel computational integral imaging reconstruction (CIIR) method using round-type mapping model. Proposed CIIP method can overcome problems of non-uniformly reconstructed images caused from the conventional method and improve the resoulution of 3-D images. To show the usefulness of the proposed method, both computational experiment and optical experiment are carried out and their results are presented.

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