http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정동연,장영희,차보남,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-
Developed shape awareness technology and vision technology for optical lens slant in this research, and including external form state of lens for the performance verification, developed so that can be good, achieve badness finding. And, establish to existing reflex data because inputting surface badness degree of scratch's standard specification condition directly, and error designed to distinguish from product more than schedule error to badness product by normalcy product within schedule extent after calculate the error comparing actuality measurement reflex data and standard reflex data mutually. Developed system to smallest 1pixel unit though measuring is possible 1pixel as 3.7μm×3.7μm(0.1369×1O^(-4)mm²) the accuracy to 10^(-4)mm minutely measuring is possible performance verification and trust ability through an experiment prove.
차보남(Bo-Nam Cha),노춘수(Chun-Su Roh),강성기(Sung-Ki Kang),김원일(Won-il Kim) 한국산업융합학회 2014 한국산업융합학회 논문집 Vol.17 No.2
This paper describes a new technology to develop the character recognition technology based on pattern recognition for non-contacting inspection optical lens slant or precision parts, and including external form state of lens or electronic parts for the performance verification, this development can achieve badness finding. And, establish to existing reflex data because inputting surface badness degree of scratch"s standard specification condition directly, and error designed to distinguish from product more than schedule error to badness product by normalcy product within schedule extent after calculate the error comparing actuality measurement reflex data and standard reflex data mutually. Developed system to smallest 1 pixel unit though measuring is possible 1 pixel as 37㎛ ×37㎛ (0.1369×10-4㎟) the accuracy to 1.5×10-4㎜ minutely measuring is possible performance verification and trust ability through an experiment prove.
Assessment of genetic diversity and distance of three Cicuta virosa populations in South Korea
Nam, Bo Eun,Kim, Jae Geun,Shin, Cha Jeong The Ecological Society of Korea 2013 Journal of Ecology and Environment Vol.36 No.3
Cicuta virosa L. (Apiaceae) is a perennial emergent plant designated as an endangered species in South Korea. According to the former records, only four natural habitats remain in South Korea. A former study suggested that three of four populations (Pyeongchang: PC, Hoengseong: HS, Gunsan: GS) would be classified as different ecotypes based on their different morphological characteristics and life cycle under different environmental conditions. To evaluate this suggestion, we estimated genetic diversity in each population and distance among three populations by random amplification of polymorphic DNA. Seven random primers generated a total of 61 different banding positions, 36 (59%) of them were polymorphic. Nei's gene diversity and the Shannon diversity index increased in the order of PC < HS < GS, which is the same order of population size. In the two-dimensional (2D) plot of first two principal components in principal component analysis with the presence of 61 loci, individuals could be grouped as three populations easily (proportion of variance = 0.6125). Nei's genetic distance for the three populations showed the same tendency with the geographical distance within three populations. And it is also similar to the result of discriminant analysis with the morphological or life-cycle factors from the previous study. From the results, we concluded that three different populations of C. virosa should be classified as ecotypes based on not only morphology and phenology but genetic differences in terms of diversity and distance as well.
차희중,황성남,한대희,심보성 대한신경외과학회 1977 Journal of Korean neurosurgical society Vol.6 No.1
We have experienced two cases of intracerebral aerocele combined by persistent traumatic cerebrospinal fluid rhinorrhea. All of two cases were diagnosed incidentally during observation in simple skull X-ray films. We performed craniotomy for the repair of the dural fistula and treated successfully. Authors discussed the possible mechanisms of the intracerebral aerocele briefly.
Cha, Ju-Hwan,Nam, Bo-Woo,Ha, Sol Korean Society of Ocean Engineers 2018 Journal of advanced research in ocean engineering Vol.4 No.1
In this paper, safety analysis of the process of installing offshore structures such as manifolds and jacket-type substructures using floating cranes and barges in waves is performed. The safety analysis consists of three components. First, the dynamic responses of the offshore structure, cranes, and barge, all of which are moored and connected using wire ropes, are analyzed. Second, tensions in the wire ropes connecting the cranes and the offshore structures are calculated. Finally, any collision between the offshore structure and the cranes or the barge that transports the offshore structure is detected. Equations of motion of the offshore structure, cranes, and barge are formulated based on multibody dynamics, as well as considering the hydrostatic, hydrodynamic, and mooring forces. Additionally, proportional-derivative control of the tagline between the cranes and the offshore structure is performed to verify the safety of the installation process, as well as for reducing the dynamic response and collisions among them.