• Clinical and Experimental Pediatrics
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• v.49 no.4
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• pp.364-367
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• 2006

Epilepsy is the most common paroxysmal disorders seen in the childhood. But other nonepileptic paroxysmal events are confused with epileptic seizures or have unusual clinical features. Nonepileptic paroxysmal disorders tend to recur episodically. So differential diagnosis between epileptic and nonepileptic disorders in fundamental not only to allow correct management of patients and but also avoid of unnecessary antiepileptic medications. To accurate diagnosis of nonepileptic paroxysmal disorders, the patients' age and accurate description of the events are need.

• Bulletin of the Korean Mathematical Society
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• v.50 no.4
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• pp.1069-1077
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• 2013

Several authors investigated the properties which are invariant under the passage from a group to its nonabelian tensor square. In the present note we study this problem from the viewpoint of the classes of groups and the methods allow us to prove a result of invariance for some geometric properties of discrete groups.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08b
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• pp.1753-1756
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• 2007

In the field of 3D display, holographic displays are the only technology allowing optimal user comfort. We have developed systems based on compact projection optics, that allow advantageous new features, like large size full-color3D scenes generated at high rate on a micro-display with state of the art resolution.

• Journal of Communications and Networks
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• v.8 no.2
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• pp.158-162
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• 2006

Historically, spectrum use has been increased through use of high frequencies, improved modulation, and between antenna techniques. However, these approaches are reaching practical limits. Cognitive radio allows new approaches to improve the intensity of use in spectrum which is licensed but under utilized. This paper addresses two such possible approaches. Real time spectrum markets permit users to exchange spectrum use. Interruptible spectrum would allow public sector spectrum users to recoup economic benefits for allowing others to share their low average, high peak use spectrum subject to preemption.

• 전기의세계
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• v.27 no.1
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• pp.45-48
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• 1978

A pressure dependence in the value of Es/p at a constant pd is observed in sulphur hexafluoride at pressures in excess of about one bar. This is explained in terms of the non-idealgas behavior of SF$_{6}$ which has a significant influence on the interpretation of electrical breakdown of this gas. The criterions for breakdown at low pressures and in the presence of rough electrodes are modified to allow this phenomeneon.n.

• Proceedings of the KIEE Conference
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• 2000.07a
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• pp.489-491
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• 2000

A DAS(Distribution Automation System) enhances the efficiency and productivity of a utility. It also provides intangible benefits such as improved public image and market adventages. This paper discusses an approach to the integration of NDIS(New Distribution Information System) and DAS that will allow benefits from both technologies to support a common database and distributed computing architecture, thereby improving the ability of many functions to justify implementation of integrated systems based on transferring' data comparisons.

• Proceedings of the KSRS Conference
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• v.1
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• pp.163-165
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• 2006

We aim to archive all the satellite images that had been scattered into Satellite Imagery Information System with setting naming rules and metadata. More than one million of scenes were collected, rectified into error-free status with metadata . Converting various formats into HDF format after considering GEOTIFF and HDF. Intranet and Internet System had been development to allow all the images to be searched and downloaded with less effort. These system will expand the usage of meteorological satellite images for expert groups and the public outside of KMA.

• Communications for Statistical Applications and Methods
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• v.6 no.1
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• pp.181-191
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• 1999

We consider Bayesian models allow multiple grouping of parameters for the normal means estimation problem. In particular, we consider a typical Bayesian hierarchical approach based on thepartial exchangeability where the components within a subgroup are exchangeable, but the different subgroups are not. We discuss implementation of such Bayesian procedures via Gibbs sampling. We illustrate the proposed methods with numerical examples.

• Journal of the Korea Society for Simulation
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• v.3 no.2
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• pp.15-25
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• 1994

Efficient event evaluation and propagation techniques are proposed to enhance the advancement of simulation clocks of conservative and optimistic logic simulation protocols on parallel processing environments. The first idea of the techniques proposed in this paper is to allow more than one event evaluation per simulation cycle and to pack more than one propagation event in a single message. The second idea is to use advancement windows resulted in good performance in parallelism and execution times.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.144-145
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• 2006

It is well known that the aromatic polycarbonate of bisphenol A (hereafter BPA polycarbonate) possesses superior transparency, exceptional toughness, high heat resistance and mechanical properties, which allow it to be diversely used for automotive, electrical, electronic, appliance and optical industries. In this paper, polycarbonate is reviewed on not only prospects of technology but market trend from the industrial point of view. It also demonstrates the diverse applications of polycarbonates with respect to its development history.