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강승호 한국사회과학연구회 2004 동향과 전망 Vol.- No.60
A comparison of the hollowing out of industries in Korea, Japan and Taiwan 한국ㆍ일본ㆍ대만의 산업공동화 비교
강승호,김병채,남태승,김준태,최성민,이승한,박만석,김명규,조기현 대한신경과학회 2011 대한신경과학회지 Vol.29 No.3
Background: Recurrent seizures result in brain damage, but it is usually gradual, minimal, and difficult to observe by visual inspection of magnetic resonance images (MRIs). It is well known that hippocampal structure is vulnerable to seizure-associated brain damage. We measured the hippocampal volume in patients with epilepsy to evaluate the degree of damage to the hippocampus. Methods: We recruited 33 patients with epilepsy and 21 healthy subjects from January 2007 to December 2008. We subclassified the patients into two groups: (1) 14 patients with intractable epilepsy and (2) 19 patients with drug-responsive epilepsy. In each group, the volumes of the left and right hippocampus were measured by manual drawing on brain MRIs. We compared the hippocampal volume in intractable epilepsy, drug-responsive epilepsy, and healthy subjects. The compounding effect of hippocampal sclerosis was ruled out by excluding eight patients with hippocampal sclerosis; we then compared the hippocampal volume in the two groups with epilepsy. Results: The volume of the bilateral hippocampus on brain MRIs was smaller in patients with intractable epilepsy than in those with drug-responsive epilepsy and healthy subjects (left, p<0.004; right, p<0.03). After excluding the patients with hippocampal sclerosis by visual inspection, the hippocampal volumes were also found to be smaller in patients with intractable epilepsy than in those with drug-responsive epilepsy (left, p<0.04; right, p<0.05). Conclusions: While there is no definitive abnormality of the hippocampus on visual inspection of brain MRIs, we determined the degree of hippocampal atrophy and volume loss in patients with intractable epilepsy. Hippocampal volumetry will be helpful for the assessment of brain damage in patients with intractable epilepsy. Background: Recurrent seizures result in brain damage, but it is usually gradual, minimal, and difficult to observe by visual inspection of magnetic resonance images (MRIs). It is well known that hippocampal structure is vulnerable to seizure-associated brain damage. We measured the hippocampal volume in patients with epilepsy to evaluate the degree of damage to the hippocampus. Methods: We recruited 33 patients with epilepsy and 21 healthy subjects from January 2007 to December 2008. We subclassified the patients into two groups: (1) 14 patients with intractable epilepsy and (2) 19 patients with drug-responsive epilepsy. In each group, the volumes of the left and right hippocampus were measured by manual drawing on brain MRIs. We compared the hippocampal volume in intractable epilepsy, drug-responsive epilepsy, and healthy subjects. The compounding effect of hippocampal sclerosis was ruled out by excluding eight patients with hippocampal sclerosis; we then compared the hippocampal volume in the two groups with epilepsy. Results: The volume of the bilateral hippocampus on brain MRIs was smaller in patients with intractable epilepsy than in those with drug-responsive epilepsy and healthy subjects (left, p<0.004; right, p<0.03). After excluding the patients with hippocampal sclerosis by visual inspection, the hippocampal volumes were also found to be smaller in patients with intractable epilepsy than in those with drug-responsive epilepsy (left, p<0.04; right, p<0.05). Conclusions: While there is no definitive abnormality of the hippocampus on visual inspection of brain MRIs, we determined the degree of hippocampal atrophy and volume loss in patients with intractable epilepsy. Hippocampal volumetry will be helpful for the assessment of brain damage in patients with intractable epilepsy.
블루투스 장치 간의 평균 홉 수를 줄이기 위한 트리 스캐터넷 형성 알고리즘
강승호,강대욱,임형석,Kang, Seung-Ho,Kang, Dae-Wook,Lim, Hyeong-Seok 한국정보처리학회 2004 정보처리학회논문지 C : 정보통신,정보보안 Vol.11 No.3
트리 구조를 기반으로 하는 블루투스 스캐터넷은 적은 링크 수와 간단한 라우팅 방법 등 여러 가지 장점을 가지고 있다. 본 논문은 블루투스 규격상의 제약조건을 만족시키면서 노드 간 평균거리가 가장 짧은 트리형태에 가까운 스캐터넷을 형성하는 알고리즘을 제시한다. 그리고 제시한 방법이 기존의 방법보다 지연시간을 더 초래하지 않고도 장치 간 평균 홉 수를 감소시킬 수 있음을 시뮬레이션을 통하여 보인다. The Bluetooth Scatternet based on tree structure has several merits such as small numb of links and simple routing method. This paper proposes an algorithm which satisfies the constraints of Bluetooth Specification and forms the topology of scatternet as close as the tree structure that has the shortest average inter-node distance among trees. Also we show that the proposed method reduces the average hop count between any two devices compared to early works without higher formation delay by a simulation.