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서울 居住主婦의 通過儀禮에 대한 意識과 儀禮飮食의 利用實態에 대한 硏究
손유미,정낙원,이효지 漢陽大學校 韓國生活科學硏究所 1992 韓國 生活 科學 硏究 Vol.- No.10
The purpose of this study is to investigate the actual situation of the transitional rites and to reestablish the meaning of that by grasping the relation among urban housewives' view, knowledge and behavior about transitional rites, by grasping the relation of those and background variables, by grasping the actual use -pattern of ritual food. The results are as follows 1.The view of the transitional rites shows significant difference according to educational level(p <0.001) and religion(p<0.001), and shows partial difference according to age, income, and residing shape. The older, the more traditional. With the less income, the more traditional. So do for the less educated, for Buddhist, and for those who live in a private residense. 2.The mean of knowledge about the transitional rites is 13.03. The knowledge shows significant difference according to religion, and shows partial difference according to educational level and income. the mean of knowledge is higher for the less educated, and for Buddhist. Those who earn more than 1500 thousand won have more knowledge than the other groups. 3.The behavior about traditional rites shows significant difference according to religion (p<0.001), residing shape(p<0.05), and shows partial difference according to age, educational level, family constitution, and whether employed or not. 4.There is close correlation(p<0.001) among the views, knowledge, and behavior. The behavior is traditional and the mean of knowledge is high as the view of the transitional rites is traditional.
복부 전후 방향 검사의 자동노출제어 사용 시 선량 비교 연구
김기원(Ki-Won Kim),권용락(Yong-Rak Kwon),서승원(Seong-Won Seo),권경태(Kyung-Tae Kwon),오주영(Joo-Young Oh),손순룡(Soon-Yong Son),손진현(Jin-Hyun Son),민정환(Jung-Whan Min) 대한방사선과학회(구 대한방사선기술학회) 2015 방사선기술과학 Vol.38 No.3
복부 전후 방향 검사 시 automatic exposure control (AEC) mode에서 조사시간을 제한하지 않고 검사를 하는 방법 (non-time limit, NTL) 과 조사시간을 제한하고 검사하는 방법 (time limit, TL)에 대해서 영상 품질 평가인 신호 대 잡음비 (signal to noise ratio, SNR), 대조도 대 잡음비 (contrast to ratio, CNR)를 측정하여 TL 방법과 NTL방법을 비교 평가하고자 하였다. 실험 기기는 XGEO GC 80 (Samsung, Korea), Unfors ThinX RAD (Unfors, Sweden), Rando Phantom (alderson research laboratories, USA)과 5.5 × 9 × 0.1 cm 3 크기의 차폐재를 사용하였 으며, AEC mode에서 전리함 (ionization chamber)를 상단 2 개만 작동하도록 설정하고 관전압은 80 kVp로 설정 하였다. TL 방법의 경우에는 조사시간을 51 msec로 제한하였으며, 전리함에 차폐재를 부착하지 않은 상태와 부착 한 상태에서 NTL AEC mode와 TL AEC mode의 영상을 획득하였다. 또한 ‘Image J”를 이용하여 영상 평가방법인 SNR과 CNR로 평가하였다. 결론적으로 차폐재를 부착했을 때 NTL AEC mode가 다른 실험 방법보다 선량이 최대 130.7% 최소 80%까지 증가한 결과 값을 보였으며, TL AEC mode는 NTL AEC mode보다 mAs와 피폭선량에서 각 각 43.8%, 44.4% 감소한 값을 보였다. 통계적으로는 SNR과 CNR은 유의한 차이를 보이지 않았다(p ≥ 0.05). 그러므로, 본 연구에서는 BMI 지수가 높은 환자나 수술 후 인체 내에 금속물질이 있는 환자를 검사할 경우에는 TL AEC mode가 유효한 검사법이라고 사료된다. We evaluated the effectiveness of TL (Time Limit) method by comparing with NTL (Non-time limit) method when it is used for examinations for abdomen Anterior Posterior (AP) in this paper. The evalua-tion was conducted based on the comparison of dose, and of signal to noise ratio (SNR) and contrast to ratio (CNR) on both methods. The experiments were conducted with XGEO GC 80 (Samsung, Korea), Unfors ThinX RAD (Unfors, Sweden) and Rando Phantom (Alderson research laboratories, USA) and shield-ing material with the size of 5.5 × 9 × 0.1 cm3. It was set to activate only two upper ionization cham-bers in automatic exposure control(AEC) mode and the tube-voltage was set to 80kVp. When the ex-posure time was limited, it is limited to 51 msec. The images both by NTL AEC method and TL AEC method were acquired when with and without attachment of shielding material on the upper ionization chambers. The images were evaluated by SNR and CNR which are the image evaluation methods using ‘Image J’. The NTL AEC method showed increases in dose as much as 130.7% at maximum and 80% at minimum than other methods. The TL AEC method showed decreases in mAs and exposure dose than the NTL AEC method as much as 43.8% and 44.4% respectively. There were no significant differences in SNR or CNR for the experiments (p≥0.05). Therefore, it is suggested that the TLAEC mode is more effective when examining patients who have high BMI index or a patient with a metallic substance in the body af-ter surgery.
손병철,이상원,강준기,최창락 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.4
Interference with visual pathways is usually not caused by intracranial aneurysms. Aneurysms of the anterior communication artery rarely produce visual symptoms and signs in spite of their proximity to the visual pathways. The reason may be that these aneurysms rupture and present with subarachnoid hemorrhage before becoming large enough to exert significant pressure on the chiasm of optic nerves. The visual symptoms would be presented as visual field defect or impaired vision. These can be explained as the result of direct compression of the optic pathways, ischemic changes in the visual pathways caused by severe vasospasm after subarachnoid hemorrhage, or intraocular pathology such as retinal hemorrhage. 2 cases of anterior communication artery aneurysms associated with visual symptoms are presented with a brief review of literatures.
손병철,조경근,박춘근,지철,이길송,이상원,강준기,최창락 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.11
Although the cerbellopontine area is a relatively small portion in the intracranial cavity, various kinds of tumors could be found in this area due to it's anatomical characteristics. There are several cranial nerves, brain stem, aquaduct of Sylvius, cerebellum and important vascultures in this area, so various neurological symptoms and signs could be occured when the tumor developed in this region. A clinical analysis of 49 patients with cerebellopontine angle tumors during the last 5 years at the department of neurosurgery of C.U.M.C was done retrospectively. There were 19 men and 30 women with mean age of 43.8 years. The most frequent tumor was acoustic neuroma-37 of these patients(75.8%) and followed by meniningioma and ependymoma in frequency. The most frequent clinical symptom were headache and hearing disturbance. On the radiological evaluation, simple plain X-ray film showed normal in 43.3% and CT scan of the brain showed hydrocephalus and asymmetric cistern in 28% and in 25% of patients respectively. Surgery was done by total extirpation in 19 cases and partial removal in 23 cases and the result were excellent or good in 29 cases.
철도차량의 운행 중 소음 저감을 위한 휠업소버의 해석 및 실험적 고찰
손영진(Son Young-Jin),정수영(Chung Su-Young),장원락(Jang Won-Rak),최상춘(Choi Sang-Chun) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The noise to be considered as the most important in railway systems is the noise generated from the wheel/rail interaction. Such noise can be divided into three categories; that is, the rolling noise, the squeal noise and the wheel howling noise. Especially in metro systems, this type of noise has been considered seriously in recent years, and the diversified studies on the mechanism and solutions of such noise are in progress by many railways and researching bodies. In this study, a specially designed wheel absorber is installed in the wheel, and FEM analysis and laboratory tests are executed for the two cases, i.e. with wheel absorber and without wheel absorber, to check the effect of the wheel absorber in noise reduction. For the FEM analysis, the frequency response functions for respective cases are compared. And, for the laboratory test, following four cases are tested and compared; that is, i) with wheel only, ii) installation of ring damper only, iii) installation of damping material and cover, iv) installation of complete absorber system.