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박영국,Jinggang Lu,박진홍,George Rozgonyi 대한금속·재료학회 2015 ELECTRONIC MATERIALS LETTERS Vol.11 No.6
In this article, the impact of hydrogenation on the electrical properties of impurity (Fe)-contaminated silicon grain boundaries (GBs) is investigated using capacitance-voltage (C-V) and capacitance transient (C-t) techniques with hybrid orientation direct-silicon-bonded (DSB) wafers. The samples consist of a 2.3 μm thick (110) Si layer on a p-type (100) Si substrate produced via hydrophilic wafer bonding, cleavage, and epithickening. It was found that for a relatively clean GB, the density of the GB states (DGB) is ~6 × 1012 eV−1cm−2, and the charge neutral level is ~0.53 eV from the valance band. DGB increases to more than 2 × 1013 eV−1cm−2 after the Fe contamination, which is reduced to ~1 × 1013 eV−1cm−2 after the hydrogenation treatment. The charge neutral level, which shifts toward the conduction band after the Fe contamination, is reversed after hydrogenation.
박영국,정성일 한국재활심리학회 2010 재활심리연구 Vol.17 No.3
The purpose of this study was to examine the impact of personal assistance service provided to disabled people on their independent living in an effort to suggest some ways of improving their self-reliance. The subjects in this study were 183 people in North Gyeongsang Province. The findings of the study were as follows:First, in order to boost the self-reliance of the disabled, they should be assisted to make the most use of personal assistance service once or more a day at least and as long as they want. Second, required budget should be prepared to secure professional personal assistants to ensure the success of the plan. And the position of disabled people should fully be taken into account when people eligible for the service are selected and when the length of service time is determined. Third, disabled users of personal assistance service should be helped to make the right choice of the service, to adjust the schedule of it and to build a friendly relationship with personal assistants.
노인요양시설 거주노인의 생활만족도에 영향을 미치는 요인에 관한 연구 : 경북지역을 중심으로
박영국,이준상,이정훈 대한지방자치학회 2010 한국지방자치연구 Vol.12 No.1
본 연구는 노인요양시설 거주노인의 생활만족도에 영향을 미치는 요인을 규명하여 서비스의 질을 제고하고, 효과적인 시설 운영을 위한 방안들을 모색하고자 한다. 이러한 목적을 달성하기 위해 본 연구에서는 노인요양시설 거주 노인 210명을 조사대상으로 하였으며, 조사결과를 분석하여 결론은 다음과 같다. 첫째, 시설내부의 여가활동 프로그램, 내부의 일상생활지원 프로그램, 시설 외부와 연계한 여가활동 프로그램, 직원과의 관계 등의 만족도가 높을수록 생활만족도가 더 높게 나타났다. 둘째, 80세이상 노인보다 80세미만 노인일수록, 거동이 불편하거나 아예 거동하지 못하는 경우일수록 생활만족도가 더 높게 나타났다. 이러한 결과를 바탕으로 제언을 하면 다음과 같다. 첫째, 전체 입소노인의 생활만족도를 높이기 위해서는 건강하지 못한 노인뿐아니라 건강한 노인들을 위한 다양한 서비스의 개발이 요구된다. 둘째, 시설내부 및 외부와의 연계를 통하여 거주노인의 사회적 지지가 가능한 여가활동 프로그램의 개발이 필요하다. 셋째, 직원의 관계형성 기술과 전문성 향상을 위한 다양한 프로그램의 개발이 요구된다.
안면신경절제가 가토의 안면근육 및 안면골에 미치는 영향에 관한 연구
박영국,이기수 慶熙大學校 齒科大學 1989 慶熙齒大論文集 Vol.11 No.-
It is the aim of this study to determine the effects of facial denervation on physiological properties of facial muscles and facial bones in growing rabbits. Experimental animals of fifty two Oryctolagus cuniculus rabbits were employed. Unilateral dissection of facial nerve was carried out on twelve rabbits, bilateral dissection of facial nerve was made on another twelve rabbits and the other twenty rabbits were on unilateral dissection of facial nerve for the histochemical analyses. Six rabbits on the bilateral surgical sham operations and six rabbits of non-intervention served the control groups. EMG records of the orbicularis oris, buccinator and masseter muscles as well as lateral and dorsoventral cephalometric films were taken and analyzed at 0, 1, 2, 5 and 8 weeks respectively. The orbicularis oris, buccinator and masseter muscles of both sides were removed from the animals of the histochemistry group and muscle fibers were classified on the basis of histochemical staining for a-GPD, NADH-D and myosin ATPase. EMG activities of orbicularis oris and buccinator muscles were vanished immediately after denervation. Recovery of activities were detected one week after denervation in buccinator and five weeks in orbicularis oris muscles. Histochemical properties of masseter muscles remained as fast glycolytic through the experimental period Orbicularis oris muscle fibers showed the gradual diminution of size and ratio of the slow oxidative fibers accompanied with atrophy, . phagocytosis and vacuolation as well as the augmentation of fast oxidative glycolytic fibers. The buccinator muscle manifested the augmentation of fast oxidative glycolytic fibers at five weeks of experiment. Visual changes in morphology of caniofacial area were not evident, how-ever a variety of subtle changes were apparent from statistical analysis of cephalometric measurements. It is concluded facial nerve regulates the physiological properties of facial muscles and inter-relation between the function of the facial muscles and changes of facial bones would be in some degrees.