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KOLAS 교정기관의 측정동등성 확립을 위한 물유량 숙련도 시험
전세종,윤병로,김수진,Chun, Sejong,Yoon, Byung-Ro,Kim, Soo-Jin 대한기계학회 2017 대한기계학회 논문집. Transactions of the KSME. C, 산업기술과 혁신 Vol.5 No.2
KOLAS (KOrea Laboratory Accreditation Scheme) belongs to APLAC (Asia Pacific Laboratory Accreditation Cooperation). KOLAS manages the accreditation scheme for measurement traceability to SI units. As per June 2016, there are 22 KOLAS laboratories for liquid flow metering. Among them, 12 laboratories participated in the proficiency test (PM2015-08) for water flow metering, organized by KASTO (Korea Association of Standards and Testing Organizations). This proficiency test was performed with three kinds of flow ranges ($3.6m^3/h{\sim}12m^3/h$, $40m^3/h{\sim}80m^3/h$, $40m^3/h{\sim}200m^3/h$) considering the CMC (calibration and measurement capability) of the participating laboratories. The purpose of the proficiency test was to find out measurement equivalence of the CMC's between each participating laboratory and the reference testing laboratory (KRISS). The measurement equivalence was tested by the number of equivalence ($E_n$). If ${\mid}E_n{\mid}$ < 1, the measurement equivalence was established. All the participating laboratories passed this proficiency test. 한국인정기구(KOLAS)는 아시아태평양인정협의체(APLAC)에 소속되어 있으며, 측정 결과를 SI 단위로 소급하고 이를 유지시키기 위해 교정기관 인정제도를 운영하고 있다. 2016 년 6 월 현재, 22 개의 기관이 KOLAS 물유량 분야 교정기관으로 지정되어 있다. 이 중 12 개 KOLAS 교정기관들이 한국계량측정협회(KASTO)가 2015 년에 주관한 물유량 숙련도 시험(PM2015-08)에 참가했다. 이번 숙련도 시험은 KOLAS 교정기관들의 교정측정능력(CMC)을 고려하여 3 가지의 유량 범위($3.6m^3/h{\sim}12m^3/h$, $40m^3/h{\sim}80m^3/h$, $40m3/h{\sim}200m^3/h$)에서 실시되었다. 숙련도 시험의 목적은 참가기관들의 CMC 가 기준시험소(KRISS)의 CMC 와 비교하여 측정동등성이 성립하는지 여부를 판단하기 위한 것이다. 측정동등성은 측정동등성지수(number of equivalence; $E_n$)를 산출하여 평가했다. ${\mid}E_n{\mid}$ < 1 일 때, 측정동등성이 확립된다고 판단했다. 이번 시험에서 12 개 KOLAS 교정기관 모두 기준시험소와 측정동등성이 성립함을 확인했다.
전세종(Sejong Chun),윤병로(Byung-Ro Yoon),강웅(Woong Kang),이용봉(Yong-Bong Lee),최해만(Hae-Man Choi) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
This study introduces the research progress of establishing a national standard for liquid flow up to 2000 ㎥/h at KRISS. At first, the WGFF guidelines for CMC uncertainty and calibration report uncertainty are introduced. After that, a mathematical model for a gravimetric flow measurement system is described using two control volumes. Some of experimental results reveal that the gravimetric system attained the measurement uncertainty less than 0.06 % (k = 2) up to 600 ㎥/h. Finally, an on-going strategy for obtaining better uncertainty at 2000 ㎥/h is discussed.
전세종(Sejong Chun),윤병로(Byung-Ro Yoon),강웅(Woong Kang),권휴상(Hyu-Sang Kwon) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Clamp-on ultrasonic flow metering can provide a non-invasive and portable means for flow measurement. However, the clamp-on ultrasonic flow metering indicates flow rates with low measurement accuracy at low flow velocity in pipe flows. Typical accuracy of the clamp-on ultrasonic flow metering amounts as low as ±1 % if the flow velocity in a pipe is greater than 0.5 m/s. The accuracy can be greater than ±2 % if the flow velocity is lowered smaller than 0.5 m/s. These shortcomings of the clamp-on ultrasonic flow metering can be overcome by combining two transit times along a Z-shaped and a V-shaped ultrasonic path. This technique is named as combined V/Z clamp-on ultrasonic flow metering. With the water flow standard system in KRISS, this combined technique exhibited intermediate performance between the two flow metering techniques along the Z-shaped and the V-shaped ultrasonic paths.
윤병로 국제비교한국학회 1998 비교한국학 Comparative Korean Studies Vol.4 No.-
As everybody knows, most of overseas Korean writers create not only in Korean but in their resident national languages such as English, Japanese, Chinese, Russian, and so forth. In the course of doing this they give shape to complications which they experience in their daily life. They delve into complications caused by their displacement complications they feel sorry for Koreans'. On the other hand, in case of the works of the writers assimilated to their resident places, they are sometimes estimated as in the main current of the literature of their own resident places (American Literature, Japanese Literature, Chinese Literature, Russian Literature) rather than discussed intentionally under the category of overseas Korean literature. It is realized that the literary tendency of overseas Korean writers differ in quality. Then the phase of Korean Literature occupied in the international literature is examined as to consider how overseas Korean literature shows the above literary tendencies. The world of literature being formed abroad through the overseas Korean literature results from and for its own reasons, and should not be judged as a search for national identity. Thus we should not understand the overseas Korean literature as only marginal to the literature of the Korean peninsula, but make an effort to understand this phase of Korean Literature within the body of international literature
윤병로 국제비교한국학회 1995 비교한국학 Comparative Korean Studies Vol.1 No.-
This paper is approached by what is the new novel aesthetics on the Korean modern novels in the early 1920s. I have investigated the foundation of modern novels and the coming writers' outlook on the world. As I have studied the novels of five coming writers precisely, and had a through grasp of their aesthetics which showed naturalism, realism, and so on. The novels created by the coming writers who were Kim Dong-In, Yeom Sang-Sub, Hyun Jin-Gun, Na Do-yang, Choi Seo-Hae were based on their ideas on Korean colony conditional. They separately created their works with the concrete personality, and inquired into the nature of the real life closely. Furthermore they produced modern psychological novels. The aesthetics of modern novels in the early 1920s had been formed generally from naturalism to realism. Of course, five writers except Kim Dong-In are characteristic of realism. Kim Dong-In is an aestheticism, or an artist for art's sake. Some noels of Kim Dong-In are based on the naturalism and realism. While he cut the realities of life, he had features quite like an aestheticism. Because of above effect of literary circles, Proletarian literature came to the front of the literary circles in the late 1920s. The group of Proletarian literature was opposed to the group of the Racialism literature. In conclusion, Korean novels in the early 1920s is characteristic of modern novel based on the artistry, against the illuminating literature in the 1910s. This characteristics was the product of modern cultural base and of the modern literary base. Also an inquiry into the aesthetics of the new novel by the coming writers who had an interesting on the modern literary thoughts and new sensibility of the realities of life produced this special feature.