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변정경(J. G. Byeon),함희영(H. Y. Ham),김소미(S. M. Kim),강양준(Y. J. Kang) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In this study, a simple method for measurement of blood viscosity and RBC aggregation in a microfluidic device is suggested. Using a disposable air-compression pump, shear rates of blood flow are varied continuously over time. By monitoring image intensity, blood velocity, and cell-to-liquid interface, RBC aggregation and blood viscosity are simultaneously measured with respect to shear rate. From the experimental demonstrations, it is found that the suggested method is capable of measuring blood viscosity and RBC aggregation over varying shear rate, with reliability.
주요 정신질환의 진단과 치료기능을 가진 감성통신 시스템
김경빈,조면균 한국특허학회 2011 특허학연구 : 한국특허학회지 Vol.13 No.4
최근 우울증 등의 주요 정신질환에 의한 폐해들이 위험수위에 도달해 있으며 이로 인한 사회·경제적 손실 또한 막대한 것이 사실이다. 본 연구는 널리 보급된 이동통신 단말기를 이용하여 주요 정신질환을 진단하고 그 치료 기능을 탑재하여, 사용자로 하여금 정신질환의 위험을 미리 알려 대비하게하며 지인과 전문기관의 도움으로 피해를 최소화하는 방안을 제공하고자 한다. 먼저 이동 통신 단말기에 주요 정신질환인 우울증을 검출할 수 있는 어플리케이션 프로그램과 센서를 장착하고, 검출된 질환의 심각성 정도에 따라 적절한 감성반응 서비스를 제공함으로써 인간적인 유대감을 느끼게 하여 극단적인 선택을 방지할 수 있다. 본 논문에서는 우울증의 정도를 정량적으로 계산하여 임계치에 따라 분류하고, 그 위험정도에 따라 적절한 감성반응을 제공함으로써 우울증을 극복할 수 있는 방안에 대해서 제안하고 미래 감성통신서비스에 대한 실현가능성을 전망해 보고자 한다.
김경빈 대한신경정신의학회 1980 신경정신의학 Vol.19 No.3
In the research on the heredity in schizophrenia, it is impossible to eliminate all the envirom ental factors. Fingerprints, form ed in the 3rd and 4th months of fetal development, remain unchanged throughout life: hence, a comparative exam ination of fing erprints can lead to the identification and the elimination of some enviromental factors. Fingerprints differ by race, sex, and right-or left-handedness, especially in the chromosomal aberrations (Down’s syndrome, Kleinefelter’s Syndrome and Turner’s Syndrome), mental retardation and congenital heart disease. Therefore they have been the subject of researches in various medical fields. There have been lots of researches on male schizophrenic fingerprints from 1930 to the present. However, the auther attempted in this study to know how are fingerprints in female schizophrenics and also to know th e differences between Korean schizophrenics and schizophrenics in western countries. The auther compared 140 male schizophrenics with 130 female schizophrenics and also with 100 male and 117 female normal subjects in their fingerprints. The results are as follows: 1) The frequency distribution of fingerprints, pattern intensity and pattern combinations of fingerprints, when compared with those of the control group, generally showed no significant correlations. 2) Comparison of Arch-shaped F ingerprints: In the male control group, arch-shaped fingerprints were evident in 11.1% of the cases as compared to a 22.6% rate in the male schizophrenic without family history of schizophrenia, hence a significant correlation. (p < 0 .05) Comparing with the female control group, the controls showed a 13.7% frequency, whereas the female schizophrenics without family history of schizophrenia showed significant correlations at 27.7%. (p < 0 .05) 3) Total Finger-Ridge Count: Comparing with the total finger ridge count in the male control group, there was an average of 149 as comparad to an average total finger ridge count of 129 in the fingerprints of male schizophrenics without family history of schizophrenia: hence a highly significant correlation. (p < 0 .001) The fingerprints of male schizophrenic patient with family history of schizophrenia averaged 131, which is a moderately significant correlation. (p < 0 .005) Comparing the total finger ridge count of the female control group (an average of 132) with those of the female patients without family history of schizophrenia (an average of 111), a highly significant correlation is apparent. (p < 0 .001) Female patients with family history of schizophrenia averaged 113, a moderately significant correlation. (p < 0 .005) 4) Ridge Dissociation: Ridge Dissociation in the male control group was 10%, as compared to a ridge dissociation rate of 23.6% in the male schizophrenic group, a moderately significant correlation. (p < 0 .005) The female schizophrenic group rate of 10%, which is apparently not a significant correlation rate.