• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.2
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• pp.751-770
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• 2019

Action recognition is an essential task in computer vision due to the variety of prospective applications, such as security surveillance, machine learning, and human-computer interaction. The availability of more video data than ever before and the lofty performance of deep convolutional neural networks also make it essential for action recognition in video. Unfortunately, limited crafted video features and the scarcity of benchmark datasets make it challenging to address the multi-person action recognition task in video data. In this work, we propose a deep convolutional neural network-based Effective Hybrid Learning (EHL) framework for two-person interaction classification in video data. Our approach exploits a pre-trained network model (the VGG16 from the University of Oxford Visual Geometry Group) and extends the Faster R-CNN (region-based convolutional neural network a state-of-the-art detector for image classification). We broaden a semi-supervised learning method combined with an active learning method to improve overall performance. Numerous types of two-person interactions exist in the real world, which makes this a challenging task. In our experiment, we consider a limited number of actions, such as hugging, fighting, linking arms, talking, and kidnapping in two environment such simple and complex. We show that our trained model with an active semi-supervised learning architecture gradually improves the performance. In a simple environment using an Intelligent Technology Laboratory (ITLab) dataset from Inha University, performance increased to 95.6% accuracy, and in a complex environment, performance reached 81% accuracy. Our method reduces data-labeling time, compared to supervised learning methods, for the ITLab dataset. We also conduct extensive experiment on Human Action Recognition benchmarks such as UT-Interaction dataset, HMDB51 dataset and obtain better performance than state-of-the-art approaches.

• Proceedings of the KIEE Conference
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• 1999.07d
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• pp.1624-1626
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• 1999

PD in defect of solid insulation system is very harmful since It often leads to deterioration of insulation by the combined action of the discharge ions bombarding the surface and the action of chemical compounds that are formed by the discharge. PD can indicate incipient failure, so it has been used to determine degradation of insulation. In this paper. we investigated PD in defects of solid insulation by using statical method and classified PD patterns with surface discharge, electrical tree and void discharge by using Kohonen network. we used peak charge, average discharge power, average discharge current, repetition rate, skewness, kurtosis, QN of the max pulse height vs. repetition rate $H_q(n)$ for analysis and classification.

• Proceedings of the KIEE Conference
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• 2002.07b
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• pp.857-859
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• 2002

This paper describes an analysis of Magnetic actuator with permanent magnet using 2-D axisymmetric finite element method. Magnetic actuator is the machine to change electrical signal into mechanical signal, and fast switching device to be used for breaker and automation field etc. This magnetic actuator considered action for armature distance, external circuit, and nonlinear material characteristic and current. Also, comparative analysis is performed for 2 coil type and 1 coil type by coil type of actuator, then characteristic is grasped. It is Combined with external circuit for analyzing transient characteristic by variable time. According to the results, we analyzed action characteristic of Magnetic actuator.

• Journal of the Korean Mathematical Society
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• v.44 no.5
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• pp.1079-1092
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• 2007

This paper studies the deformation theory of a holomorphic surjective map from a normal compact complex space X to a compact $K\"{a}hler$ manifold Y. We will show that when the target has non-negative Kodaira dimension, all deformations of surjective holomorphic maps $X{\rightarrow}Y$ come from automorphisms of an unramified covering of Y and the underlying reduced varieties of associated components of Hol(X, Y) are complex tori. Under the additional assumption that Y is projective algebraic, this was proved in [7]. The proof in [7] uses the algebraicity in an essential way and cannot be generalized directly to the $K\"{a}hler$ setting. A new ingredient here is a careful study of the infinitesimal deformation of orbits of an action of a complex torus. This study, combined with the result for the algebraic case, gives the proof for the $K\"{a}hler$ setting.

• YAKHAK HOEJI
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• v.17 no.1
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• pp.1-8
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• 1973

The pharmacological activities of paeoniflorin abtained from paeony roots, F$_M$100 from glycyrrhiza roots, crude saikosides from bupleurum roots, crude platycodin from platycodon roots, and bothj of ginsenoside Rb and ginsenoside Rg series from ginseng roots were investigated. Paeoniflorin, F$_M$ 100, crude saikosides, and crude platycodin exhibited sedative antipyretic, anlagesic and anti-ulcerative actions. In addition, crude saidosides and crude platycodin showed antitusaive and the potent anti-inflammatory action. An expectorant action was also observed with crude platycodin. These results coincided with the clinical applications of the aforementioned oriental medicinals. It also should be noted that crude saikosides nad crude platycodin are preferable to the other steroidal nad nonsteroidal drugs as an anti-inflammatory agent, because the drugs aggravate the digestive ulcer. In ginseng, G No3. and GNS frctions out of ginsenoside Rb series hsowed stimulant and antifatigue actions. The synergistic effects identified between paeoniflorin and F$_M$ 100 on the various pharmacological activities, have verified the reasonability of combined uses of two oriental drugs as Jakyak Gaqmcho-Tang.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.29 no.12 s.243
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• pp.1561-1566
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• 2005

In this paper, a new compact active magnetic bearing(AMB) is proposed in which radial and axial bearings are integrated in one bearing unit. It consists of four U-shaped cores circumferentially connected by yokes and two-layer coils for radial and axial controls. For the radial control action, it has the same principle as conventional homopolar AMBs, while for the axial control, it uses the Lorentz force generated by the interaction of the bias flux for radial control and the axial control flux. The proposed structure makes it easy to design a compact AMB because it has no disk for axial control. This paper introduces the proposed structure, principle, and design process based on the magnetic flux analysis. By using a control algorithm with feedforward action to compensate the coupled flux effect, the feasibility of the proposed AMB is experimentally verified.

• Journal of Korea Multimedia Society
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• v.10 no.12
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• pp.1714-1725
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• 2007

This paper describes a top-down behavior planning framework in a simulation game from personality to real life action selection. The combined behavior creating system is formed by five levels of specification, which are personality definition, motivation extraction, emotion generation, decision making and action execution. Along with the data flowing process in our designed framework, NPC selects actions autonomously to adapt to the dynamic environment information resulting from active agents and human players. Furthermore, we illuminate applying Gaussian probabilistic distribution to realize character's behavior changeability like human performance. To elucidate the mechanism of the framework, we situated it in a restaurant simulation game.

• Natural Product Sciences
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• v.20 no.1
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• pp.17-21
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• 2014

The combined new phytoformula (CAS), a mixture (5 : 3 : 2, w/w/w) of the ethanol extracts of the roots of C. officinalis and A. japonica, and the n-butanol fraction of the S. subprostrata strongly inhibited arthritic severity score as well as IL-6 production in serum of collagen-induced arthritic mice. Histological observation also indicated that the CAS-treated group showed less breakdown of joint cartilage of the collagen-treated mice. In contrast, C. officinalis alone or a combination of A. japonica and S. subprostrata did not show significant inhibitory action on the same animal model. Thus, it is thought that CAS possesses a synergistic inhibitory action on arthritic condition. All these results strongly suggest that CAS may be a potential anti-arthritic agent.

• Korean Journal of Pharmacognosy
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• v.22 no.4
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• pp.240-245
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• 1991

This study was attempted to examine the acute toxicity and the effect of Sopunghwalhul-Tang water extract(SHTE) on analgesic action in mice, anti- inflammatory action in rats and blood pressure in rabbits. The results were as follows; SHTE showed 10% mortality at 2,000mg/kg(p.o.), had significant analgesic activity in the pain caused by 0.7% acetic acid and was shown to have significant anti-inflammatory activity in the edema-induced by 5% acetic acid at 450mg/kg. SHTE given into a ear vein of rabbits produced a dose-related vasodepressur responses. SHTE-induced hypotension was significantly inhibited by pretreatment with atropine, but was not affected by chlorisondamine, phentolamine, propranolol, and dephenhydramine.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 1998.06a
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• pp.50-69
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• 1998

Dimethomorph is a novel fungicide with a high level of activity against diseases induced by certain Oomycetes, including fungal populations that are resistant to other products. In several ways, this fungicide illustrates the opportunities and challenges presented by many modern pesticides. The specific mode of action, which affects cell wall formation, is associated with a very high level of performance and low dose rates under field conditions. These low dose rates, combined with a low level of toxicity to non-target organisms present an outstanding safety profile. This same highly-specific mode of action, however, limits the spectrum of activity and suggests the need for a resistance management plan, both of which must be addressed in new product development. In addition, the biological and physiochemical properties of this, and other new products are not adequately described by the traditional classification of fungicides into“protectant”and“systemic”types. These unique profiles provide novel and useful products for disease control.