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굴절률에 의한 χLi₂O·y(B₂O₃·0.1Al₂O₃) 유리계의 구조 해석
강종수,양해경,문성준,강종수,정환재,김현태,정석종 全南大學校 師範大學 附設 科學敎育硏究所 1998 科學敎育硏究誌 Vol.22 No.1
The ternary xLizO . y(B20 3 . O:lAh03) glasses were made spanning the glass forming region as a function of R(=mole% Li20/mole% B203) and (=mole%AlzOJimole%B20 3). The refractive index of glasses were measured at several wavelengths (430.8nm, 486.1nm, 527.0nm, 589.0nm, 653.3nm, 687.0nm). The measured values were spanned in the range of 1.4864-' l.6136. These values have been analyzed as a function of R to facilitate of the studies on the structure of glasses. The results have indicated that; 0) the addition of lithium oxide in pure boron glasses converts B03 units with a little polarizability to B04- units and B03- units with a large one, (2) in the region of a little content of lithium, the refractive index values depend on the content of the lithium first .thing, (3) in. the region of a high content of lithium, the tangent of ,an increase of the refractive inqex is reduced because the glasses get the increase of an opening of the structure and a molar volume, (4) the polarizability of B03- unit with a lithium ion is smaller than it of B04 - unit with the same ion.
The driving load measurement and durability test criteria setup method of automotive component
강종수,홍성도,신태숙 대한용접·접합학회 2021 대한용접학회 특별강연 및 학술발표대회 개요집 Vol.2021 No.5
This research studied the technique to measure the driving load and set up durability performance evaluation criteria of the automotive component. Therefore, the sensor gaging and calibration were performed to measure the RLDA(real load data acquisition) on low control arm of automotive components. The real driving test was carried out on 5 real roads like city road, local road, high way, nation road and unpaved road. The damage corresponding to high rank 1% driver condition was extracted on 5 real roads using log normal probability distribution. And the total damage of low control arm component was calculated reflecting the road driving mileage ratio of general drivers. The durability performance test load and cycle counts were suggested for the low-control arm component based on 2 years or 40,000km warranty standard.
강종수 한국콘텐츠학회 2012 International Journal of Contents Vol.8 No.3
Burnout is a severe psychological and physical syndrome that occurs in response to prolonged stress at work. It brings enormous costs to both organizations and individuals because it negatively impacts employees’ job attitudes and leads to undesirable behaviors. The purpose of this study was to examine the negative effects of job burnout on the organizational commitment and organizational citizenship behavior of social worker. Organizational citizenship behaviors are efforts by employees above and beyond what is expected. For the research, burnout was consisted of emotional exhaustion(EE), depersonalization(PA) and diminished personal accomplishment(DP) by Maslach and Jackson’s MBI. This study analyzed 342 social workers in private social welfare organizations by survey. The results of this study were summarized as follows: Social Workers had negative correlation to burnout on the organizational commitment and organizational citizenship behavior. Especially, EE, PA and DP had a negative effect on the organizational commitment; PA and DP had a negative effect on the organizational citizenship behavior. This study finally discussed theoretical implications for future study and practical implications for burnout strategies on the results.
사람면역결핍바이러스감염증 치료 중 발생한 중대뇌동맥협착의 악화 및 재발성 뇌경색
강종수,김민옥,이정진,박민원,김창헌,김영수,박기홍,강희영,최낙천,권오영,김수경 대한신경과학회 2018 대한신경과학회지 Vol.36 No.4
Human immunodeficiency virus (HIV) infection can result in ischemic stroke via several mechanisms, including opportunistic infection, vasculopathy, cardioembolism, and coagulopathy. HIV-vasculopathy is related to endothelial dysfunction, stenosis and aneurysm formation, infectious vasculitis, dissection and accelerated atherosclerosis during highly active antiretroviral therapy (HAART). We represent a case of HIV infection manifested as an acute ischemic stroke attack. After 4 months during HAART, our patient experienced a recurrent ischemic stroke with progression of middle cerebral artery stenosis.
강종수,강철후,노지은,염정아,심동현,김영수,이상원,김영수,박기홍,김창훈,김수경,최낙천,권오영,강희영,백승국 대한신경집중치료학회 2018 대한신경집중치료학회지 Vol.11 No.2
Background: At most centers, general anesthesia (GA) has been preferred for endovascular treatment (EVT) of ruptured intracranial aneurysms (RIAs). In this study, we analyzed procedural results, clinical outcomes, and follow-up angiographic findings for patients undergoing EVT for RIA under local anesthesia (LA) with conscious sedation (CS). Methods: We retrospectively evaluated 308 consecutive patients who underwent EVT for RIAs at a single institution between June 2009 and February 2017. EVT under LA with CS was considered for all patients with aneurysmal subarachnoid hemorrhage, regardless of Hunt and Hess (HH) scale score. Results: EVT was performed for 320 aneurysms in 308 patients with subarachnoid hemorrhages. The mean patient age was 55.5±12.6 years. Moderate (III) and poor (IV, V) HH grades were observed in 75 (24.4%) and 77 patients (25%), respectively. Complete occlusion immediately after EVT was achieved for 270 (84.4%) of 320 aneurysms. Thromboembolic complications and intraprocedural ruptures occurred in 25 (7.8%) and 14 cases (4.3%), respectively. The morbidity rate at discharge (as defined by a modified Rankin scale score of 3 or greater) was 27.3% (84/308), while the mortality rate was 11.7% (36/308). Follow-up angiographic results were available for 210 (68.1%) of 308 patients. Recanalization was observed in 64 (29.3%) of 218 aneurysms in 210 patients. Conclusions: Based on our experience, EVT for RIAs under LA with CS was feasible, regardless of the clinical grade of the subarachnoid hemorrhage. Complication rates and follow-up angiographic results were also comparable to those observed when GA was used to perform the procedure.