• Title/Summary/Keyword: 실시간법

Search Result 3, Processing Time 0.017 seconds

Comparison of In-Plane Measurement of Phase-Shifting with Time-Average Method (위상이동법과 시간평균법의 면내변위 측정 비교)

  • Kim, Kyoung-Suk;Kim, Dong-Iel;Jung, Hyun-Chul;Kang, Ki-Soo;Lee, Chan-Woo;Yang, Seung-Pil;Jarng, Soon-Suck
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.16 no.10
    • /
    • pp.53-58
    • /
    • 1999
  • Even I the Electronic Speckle Pattern Interferometry(ESPI) method that measure the strain of object within wavelength of light is less visibility than Holographic Interferometry(HI) method, the merits of application, convenience and time-save have made the method practical in industry. However, the existing ESPI methods that are based on dual-exposure, real-time and time-average method have difficulties for accurate measurement, due to irregular intensity and shake of phase. Recently, in order to solve this problem, phase shifting method have been proposed. In this method, the path of reference light in interference is shifted to make improvement in distinction and precision. But this method includes too many noise, caused by the problem of relationship between object and phase. Therefore, a method to reduce noise muse be introduced. In this paper, least square fitting method is proposed. As results, the phase-map is influenced by precise phase shifting and current of notes and speckle pattern obtained by phase shifting method is improved on the existing method driven from time-average method.

  • PDF

A Survey on the Sensory Preference for Making Summer Kimchi by Nationwide Region (여름철 배추김치 담금시 지역별 관능적 선호도 조사)

  • Cha, Yong-Jun;Kim, Hun;Cho, Wo-Jin;Jung, Yeon-Jung;Lee, Young-Mi;Kim, Eun-Jeong
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.32 no.3
    • /
    • pp.393-399
    • /
    • 2003
  • The purpose of this study was to investigate the preferred methods for making summer kimchi as a basic research of making commercial kimchi. Questionnaire were collected from 590 housewives nationwide in Korea, and the data were analyzed by SPSS program. The results were as follows: (1) The average salting time of Chinese cabbage was 3~5 hrs when the combined method of dry and brine salting was used, regardless of the region. (2) Seven jeotkals (salt-fermented fishes) including anchovy, anchovy juice, shrimp, northern sand lance juice, hair-tail viscera, flatfish and yellow corvenia were mainly used in kimchi. Among them, anchovy and anchovy juice jeotkals were preferred to all others in Southern area (Busan, Gwangju, Gyeongnam, Gyeongbuk, Jeonnam), while shrimp jeotkal in Seoul, Gwangju, Jeonbuk, Chungnam and Jeju, and northern sand lance juice jeotkal in Daegu, Daejeon and Gyeonggi, respectively. In most regions, however, blending type of 2 jeotkals was used in kimchi. (3) Eleven ingredients such as red pepper, garlic, ginger, green onion, radish, leek, onion, carrot, sugar, sesame and MSG were used as basic components for making kimchi. In particular, MSG was used as a basic ingredient regardless of region and age. However, a standard taste for making kimchi was depended on housewife in this study.