굴착 단계를 고려한 쉴드 터널의 점소성 유한요소 해석

진치섭,황택진,서기영 부산대학교 생산기술연구소 2001 生産技術硏究所論文集 Vol.60 No.-

쉴드 터널공법은 연약지반이나 붕괴성 지반에 매우 유리한 터널공법이므로 날로 그 사용이 증대되고 있다. 그러나 이러한 쉴드 공법을 사용할 경우에는 대상 지반에 대한 충분한 지반 조사가 먼저 이루어져야만 한다. 본 연구에서는 쉴드 터널링을 모사 할 수 있는 점소성 유한요소를 통해 STAVIS라는 프로그램을 개발하였다. 이 프로그램은 Mohr-Coulomb 항복 규준을 사용하였고 지반의 변위 이력을 통한 유동계수 값을 사용하였다. 해석 대상은 부산 지하철 230공구로 하였고, 계측 라인에 대한 해석치와 계측치를 비교하였다. 융기 및 테일보이드 폐합단계, 라이닝 설치 후 지반 거동에 대한 해석결과가 계측치와 유사한 경향을 보여주었다. 본 논문의 연구결과는 지하 구조물의 가까운 곳에 쉴드 터널을 건설할 경우 유용하게 적용할 수 있을 것으로 본다. The construction method by the shield tunnel is increasing day by day, because it is useful method to soft ground and to be structure at neighboring place. Incase of use of the method, it must be planed enough a geological survey of soil and ground condition. Viscoplastic FEM program was developed STAVES in this study. The program is used Mohr-Coulomb yield criterion and adequate ·fluidity parameter was selected as comparing displacement histories of soil. The object of analysis was Busan Subway 230 site. The analytical values were compared with the measured values. The results of analysis are similar to the measured behavior of ground for heaving, tail void closure and liner installation. By using the results of this study, it can be applicable to construction of shield tunnel when it is nearly constructed to the underground structures.

Global Onion and Its Wild Crossable Relatives Genetic Resources

Chris Kik 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Reliability Evaluation of ACP Components under a Radiation Environment

Hyo-Kik Lee,Kwang-Ho Yoon,Kwang-Mook Lim,Byung-Suk Park,Ji Sup Yoon 한국방사성폐기물학회 2007 방사성폐기물학회지 Vol.5 No.4

이 논문은 사용후핵연료 차세대관리공정(ACP)에 사용되는 주요부품에 대한 방사선영향에 대하여 다룬다. 평가대상 부품으로는 중요도가 높은 것들 중에서 선택하였는데, AC 서보모터, 포텐쇼미터, 열전대, 가속도계, CCD 카메라를 그 대상으로 하였다. AC 서보모터의 경우 ACP 핫셀 내 조작기에 여러개가 사용되고 있고, 공정장치의 일부에 사용되고 있다. 포텐쇼미터는 조작기 관절의 절대 각도를 측정하기 위해 사용된다. 열전대는 금속전환장치 등의 반응기 온도 측정을 위해 사용된다. 가속도계는 탈피복시 발생하는 이상을 사전에 감지하기 위한 용도로 탈피복장치에 부착되어 있고, CCD 카메라는 조작기와 함께 공정 휴지기간에 영상 In-situ 이상감시를 하기 위한 용도로 사용된다. 다양한 방사선 중 감마선은 전기, 전자 및 로봇 부품에 가장 치명적이라고 알려져 있으므로 본 연구에서는 Co-60선원을 사용하는 감마조사시설을 이용해 방사선 영향을 평가하였다. 방사선조사결과 CCD 카메라를 제외한 다른 부품들은 방사선에 매우 강인한 특성을 보였다. 누적조사선량에 대한 각 대상 부품의 고유한 특성변화 데이터를 얻었고, 대상 부품의 성능을 보장할 수 있는 기준인 손상분기점에 대한 평가 자료를 얻을 수 있었다 This study deals with the irradiation effects on some selected components which are being used in an Advanced Spent Fuel Conditioning Process (ACP). Irradiation test components have a higher priority from the aspect of their reliability because their degradation or failure is able to critically affect the performance of an ACP equipment. Components that we chose for the irradiation tests were the AC servo motor, potentiometer, thermocouples, accelerometer and CCD camera. ACP facility has a number of AC servo motors to move the joints of a manipulator and to operate process equipment. Potentiometers are used for a measurement of several joint angles in a manipulator. Thermocouples are used for a temperature measurement in an electrolytic reduction reactor, a vol-oxidation reactor and a molten salt transfer line. An accelerometer is installed in a slitting machine to forecast an incipient failure during a slitting process. A small CCD camera is used for an in-situ vision monitoring between ACP campaigns. We made use of a gamma-irradiation facility with cobalt-60 source for an irradiation test on the above components because gamma rays from among various radioactive rays are the most significant for electric, electronic and robotic components. Irradiation tests were carried out for enough long time for total doses to be over expected threshold values. Other components except the CCD camera showed a very high radiation hardening characteristic. Characteristic changes at different total doses were investigated and threshold values to warrant at least their performance without a deterioration were evaluated as a result of the irradiation tests.

Garlic and Health

Chris Kik,Marie Helene Siess,Remi Kahane,Rolf Gebhardt 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Workshop Overview: Genomics and Molecular Breeding for Allium Crop Improvement

Michael J. Havey,Chris Kik,Olga E. Scholten,John McCallum,Hikaru Tsukazaki,Tadayuki Wako,Masayoshi Shigyo 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

運動選手의 基礎體力 要素간의 相關關係 分析

徐國雄,白永鎬,徐國殷 부산대학교 1983 자연과학논문집 Vol.36 No.-

This study was executed so as to analyze the correlation among the general motor ability. The subjects were 83 man college athletes(42 ball game players and 41 match game athletes) as a experimental groups and 69 non athletes as acomparative groups. The test period was from september 5, 1983 to september 15, 1983. The results were as follows. 1. The actual condition of the general motor ability between the group. (1) In case of ball game athletes. The volleyball players had shown a good scores which was 55.85±8.08 in the trunk extension. Rugby players had shown a good scores which was 9.44±2.55 in the chinning, 255.88±9.62 in the standing broad jump and 7.40±3.62 in the stick test. Handball players had shown a good scores which was 137.00±16.63 in the back strength and 9.84±0.47 in the shuttle run but basketball players had shown a bad scores in the other total items. (2) In case of match game athletes , Tae Kwon Do athletes had shown a good scores which was 240.78±13.00 in the standing broad jump, wrestling athletes had shown a good scores which was 17.93±9.50 in the chining, and 5.19±2.30 in the stick test and Judo athletes had shown a good scores which was 124.92±17.83 in the back strength and 10.18±0.34 in the shuttle run. (3) In case of non athletes, Non athletes had shown a bad scores more than any other athlete. 2. The correlation among the general motor ability between the groups. (1) In case of ball game players, standing broad jump had been shown a little correlation with back strength (r=0.3519), chinning (r=0.4811) and trunk extension (r=0.3665). And it had been shown little correlation with that others. (2) In case of match athletes, Chinning and standing broad jump(r=0.3577) had been shown a little correlation as well as chinning and stick test. Shuttle run and standing broad jump (r=-0.5961) had been shown much higher correlation. (3) In case of non-athletes, Chinning and standing broad jump (r=0.3917) had been shown a little correlation as well as shuttle run and stick test (r=-0.3571). Shuttle run and standing broad jump (r=-0.4918) had been shown much higher correlation. (4) As a whole, Back strength and shuttle run (r=-0.3918) had been shown a little correlation as well as shuttle run and standing broad jump. 3. A regressive equation between standing broad jump and other items among the groups. (1) In case of ball game players, Y=+0.14 X-28.37 had been acquired in the relation with the standing broad jump and chinning (r=0.4811). (2) In case of match game athletes, Y=-0.02 X+13.9 had been acquired in the relation with the standing broad jump and shuttle run (r=-0.5661). (3) In case of non athletes, Y=-0.02 X+15.78 had been acquired in the relation with the standing broad jump and shuttle run (r=-0.4917).

ATM 망에서 다중 멀티캐스팅 서버를 이용한 IP 멀티캐스팅 방안

변태영(Tae-Young Byun),장성식(Sung-Kik Jang),한기준(Ki-Jun Han) 한국정보과학회 1999 정보과학회논문지 : 시스템 및 이론 Vol.26 No.9

본 논문에서는 RFC 2022에서 제안한 MARS 모델을 기반으로 하여 단일 대규모 클러스터를 가지는 ATM 망에서 다증의 멀티캐스팅 서버(MCS)를 이용한 멀티캐스팅 방안을 제안하고 그 성능을 평가하였다. 클러스터 내의 한 ATM 호스트가 특정 IP 멀티캐스트 그룹에 가입할 경우 ATM 호스트의 위치와 이미 존재하는 멀티캐스팅 서버들 사이의 전송 지연을 고려하여 가능한 한 종단간 전송 지연을 최소화하는 멀티캐스팅 서버를 선택하는 방안을 기술하였다. 이 방안은 최단거리 경로 알고리즘(shortest path algorithm)에 기반하여 최적의 MCS를 선정하고 송수신자 사이의 최소 지연을 가지는 멀티캐스트 트리를 구성한다. 다양한 망 위상에서 MCS의 분포 패턴을 다르게 할 경우에도 이 방안은 멀티캐스트 트리의 평균 전달 지연을 줄이는 것을 시뮬레이션을 통하여 확인하였다. In this paper, we proposed a scheme to support multiple MCSs over a single and large cluster in ATM networks, evaluated its performance by simulation. When an ATM host requests joining into a specific multicast group, the MARS designate a proper MCS among the multiple MCSs for the group member to minimize the average path delay between the sender and the group members. This scheme constructs a multicast tree through 2-phase partial multicast tree construction based upon the shortest path algorithm. We reduced the average path delay in multicast tree using our scheme under various cluster topologies and MCS distribution scenarios.

관상용 고추 ‘영고 6호’ 육성

권태룡(Tae-Ryong Kwon),이문중(Moon-Jung Lee),장길수(Kik-Su Jang),김하규(Ha-Kyu Kim),임재하(Jae-Ha Lim),김병수(Byung-Soo Kim) 한국원예학회 2005 한국원예학회 학술발표요지 Vol.2005 No.5

해양심층수로 제조된 두부의 품질특성

김광우 ( Gwang Woo Kim ),김가현 ( Ga Hyeon Kim ),김정식 ( Jeong Kik Kim ),안효영 ( Hyo Yeong An ),허길원 ( Gil Won Hu ),손진기 ( Jin Ki Son ),김옥선 ( Ok Seon Kim ),조순영 ( Soon Yeong Cho ) 한국수산학회 2008 한국수산과학회지 Vol.41 No.2

양파의 특정 염색체에 위치한 microsatellite 표지인자 개발

Yul Kyun Ahn,A. W. Van Heusden,C. Kik 한국육종학회 2004 한국육종학회 학술발표회 발표요지 Vol.36 No.1