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조치룡 國立 昌原大學校 産業技術硏究所 1993 産技硏論文集 Vol.7 No.-
Linear short fibers are added between laminae in a composite laminate to improve the interlaminar fracture toughness. The interlaminar fracture resistance is determined in terms of fracture energy utilizing the generalized locus method which can evaluate the fracture energy even in highly non-linear materials. The fracture energy of the short fiber reinforced specimens is increased about 20%. From the fracture surface study, it is show that the short fibers added at the interface disturb the progress of the fiber branching between the laminae during the fracture. This interruption behavior of the short fiber is thought to be the main cause of the improvement of the fracture energy.
원치선 동국대학교 산업기술대학원 1993 산업기술논문집 Vol.1 No.-
In this paper, a target extraction using stochastic image models is proposed. The observed images are considered to be made up of three stochastic models. The first model is in charge of the noise component and is assumed to be independent identically distributed Gaussian. The labelling of two regions (i.e., the object and the background) in the second model is to obey Gibbs Random Field (GRF). Finally, we adopt a population parameter to represent the ratio of the size of the object to that of the background. The population parameter is to ease the tendency of producing similar-sized segmentations. Establishing the stochastic models, we incorporate the maximum a posteriori (MAP) estimation to determine the region labels. The optimization of the MAP creiterion is achieved by a deterministic relaxation method to converge quickly to a local maximum.
김치용,유영종,이상훈 인제대학교기초과학연구소 1997 자연과학 Vol.1 No.-
두 개의 상호작용하는 신경세포들의 동력학을 기술하는 두 개의 확산결합된 선형적으로 또는 비선형적으로 이질적인 2차원 원사상의 2보차원 등주기갈래질의 전역구조를 전산모사하였다. 회전수집합과 리야프노프지수를 계산하여 결합한 원사상의 주기적 상태, 두 주파수 또는 세 주파수와 관련된 준주기 상태, 그리고 혼돈 및 초혼돈적 상태들을 분류하는 기준을 설정하였다. 아놀드의 혀 및 주기적 새우 구조와 같은 동위상 또는 반위상 동조가 선형 또는 비선형 매개변수 공간에서 발견되어 결합계에서의 혼돈 갈래질의 보편적구조를 확인하였다. We analyse the codimentsin-two isoperiodic bifurcatin diagrams of two homogeneous and heterogeneous diffusively coupled circle mape. In-phase or out-of-phase periodic states, two-frequency or three-frequency quasi-periodic states, chaotic, and hyperchaotic states are graphically classified and charac-terized by rotaion set and lyapunov specturm. In-phase or out-of-phase Entrainment such as Amold's tongues and peridic shrimps appear in quasiperiodic or chaotic area of the linear or nonlinear parameter space. We also discuss the relevance of entrainment in coupled neural systems.
鄭此炘 全南大學校 農漁村開發硏究所 1965 農業科學技術硏究 Vol.3 No.-
In fermented mash which was used rice and sweet potato as source material, the contents of alcohol, total sugar, total organic acids were analyzed and the results are summarized as follow. 1). Rice-fermented mash having higher starch content(81%) was more on the average 4% in alcohol fermentation than sweet potato-fermented mash having lower starch content(21%). 2). Total sugar content of sweet potato-fermented mash was more on the average 21% than rice-fermented mash because of the larger amount of the non-reducing sugar which can't be used in alcohol fermentation. 3). In sweet potato-fermented mash, the total content of the organic acids was on the average 1.1% more than rice-fermented mash because of the larger amounts of acid-forming materials. 4). From above results. It was not probitable to make fermented mash from sweet potatos and it is thought that it should be made from pure sweet potato starch.
Procaine Amide及 Quinidine이 數種實驗的 不整脈에 미치는 效果에 對한 比
閔祗植 中央醫學社 1962 中央醫學 Vol.3 No.2
The antiarrhythmic and arrhythmytogenic effects of quinidine and procaine amide were investigated on the artificially produced arrhythmias in the whole rabbit and rat. Both quinidine and procaine amide could protect the rabbit from developing suba?rial thythms by the coaction of vagal stimulation and sympathomimetic amine: l-norepinephrine, l-eponephrine or isoproterenol. The comparison of the potency of these amines to produce ectopc beats during vagalstimulation by the smallest dose of each amine revealed isoproterenol to be much more potent than the others, as shown in other species. In the rabbit, quinidine seemed to potentiate the arrhythmytogenic effect of the intravenous aconitine, Whereas procaine amide lessened those of aconitine in some cases. The bradycardia developed by intravenous serotonin in the rat was almost ablished by the pretreament of procaine amide, but quinidine- pretreatment made the serotonin bradycardia more pronounced and prolonged.