• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.760-763
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• 2003

We have investigated the electro-optical characteristics of image sticking in AC PDP. Although Image sticking is one of major factors to determine display quality in AC PDP, so far, it has not being reported why it is occurred and how we can prevent it. In this experiment, we have analyzed the effect of MgO protective layer and phosphor on the image sticking and we have measured the difference of firing voltage, brightness and discharge current between sticking image and normal image in AC PDP. As a result, Phosphor degradation is a more major factor than MgO protective layer and the firing voltage of gas discharge in sticking image is higher than that of normal discharge.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.19 no.3 s.31
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• pp.232-236
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• 2006

Objectives : Strabismus refers to the oculomotor muscles imbalance that results from improper alignment of the visual axes of the two eyes. It may be divided into paralytic and nonparalytic strabismus. Paralytic strabismus is primarily result from neurologic problem and nonparalytic strabismus is more strictly opthalmologic problem. At first we used this method(electroacupuncture at oculomotor muscles) and gained good recoveries for adult paralytic strabismus cases or Miller-Fisher syndrome, and I tried to know the effective and safety for children cases. Methods : We treated the case by using the electroacupuncture at paralytic oculomator muscles. The case was treated almost daily and every treatment was enforced 10 minutes. We use the PG-306 electra-acupuncture products(Suzki Iryoki Co. Japan) and apply the low consequence wave of I-8Hz Results : We found that the case was recovered perfectly in short term and appealed any sides effect or compliant. So I try to apply this treatment in many children cases and make the treating protocol for them.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.11b
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• pp.601-604
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• 2001

The insulation materials of cables used for underground power transmission requires a higher insulating capability. and the most popular method to examine the cable is partial discharge test due to applying variation voltage. In the thesis. air void. silicone oil. of which may possibly exist real cables. are simulated by Electra 2D program. Also the relations between calculated field strength and the void defect type in the cable joint materails. In the modeling. electic field inner to the cable joint material composed by XLPE and EPDM is modeling simulated. We obtained the electric field distribution in void due to two conditions.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.21 no.1
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• pp.133-138
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• 2008

Objectives : We already reported the effectiveness of this treatment method(electroacupuncture at oculomotor muscles) at the adult and young idiopathic paralytic strabismus patients and Miller-Fisher syndrome. Then I explored the possibility for improvement of the traumatic injury paralytic strabismus case. Methods : I treated the case by using the electroacupuncture at both paralytic lateral rectus muscle lesions. The case was treated almost daily and every treatment was enforced 10 minutes. I use the PG-306 electra-acupuncture products(Suzuki Iryoki Co. Japan) and apply the low consequence wave of 1-8Hz. Results : We gained good results from the case and not observed any sides effect or compliant. So I hope to apply this treatment for traumatic and post-operative nerve injury cases and am sure to make the treatment protocol for them in the future.

• Corrosion Science and Technology
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• v.6 no.1
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• pp.12-17
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• 2007

Portland cement incorporating supplementary cementing material develops excellent mechanical properties and long term durability characteristics. India is a leading rice producing country and rice husk is considered as waste in the rice milling industries. In this present work, the rice husk ash (RHA) was added to concrete as cement replacement from 0 to 30%. Corrosion performance of reinforcing steel embedded in RHA blended concretes was studied using linear polarization, AC impedance and gravimetric methods. The corrosion rate of steel bars embedded in RHA concretes were compared with control concrete. The results clearly indicate that the corrosion rate of reinforcing steel embedded in concrete is significantly reduced with the incorporation of RHA. A good correlation among gravimetric method and electrochemical methods was observed. Electrochemical impedance study showed 98 percentage reduction in corrosion rate to the RHA blended concrete with 15% replacement than control concrete.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2002.08a
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• pp.19-24
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• 2002

Static electricity is an everyday phenomenon. There can be few of us who have not experienced a static shock after sliding across a car seat. Other static nuisance effects include the cling of some fabrics to the body, the sticking of a plastic document cover, or the attraction of dust to a TV or computer screen. However, static electricity has been a serious industrial problem. The age of electronics brought with it new problems associated with static electricity and electrostatic discharge. And, as electronic devices became faster and smaller, their sensitivity to ESD increased. In this work, We are study on the control technique of electo-static discharges using semiconductor circuits. Our circuits are prevented well to electrostatic shock or damages from triboelectric charging in cars everyday life.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.285-287
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• 2000

CORBA는 이 기종간의 분산 어플리케이션을 구현하기 위해 적합한 미들웨어이다. 하지만 point-to-point 통신을 하기 때문에 신뢰성 있는 그룹 통신을 제공하지 못한다. 기존의 방식은 Orbix+Isis, Electra등과 같은 하부 툴킷을 이용하여 그룹 통신을 지원하기 때문에 툴킷과 어댑터에 종속적인 문제가 발생한다. 본 논문에서는 이러한 문제를 해결 하고자 기존의 통신 툴킷을 이용하지 않고 ORB를 수정하여 그룹 통신과 결함허용을 지원하는 ORB를 설계한다. 제한된 방법은 복제를 통해 ORB 내부에서 객체 그룹에 대한 결함을 처리하도록 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.318-319
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• 2023

본 연구에서는 다양한 문제들을 ELECTRA를 통해 문제의 유형을 분류하고, 그것을 기존의 문제들과 유사도 평가를 진행하여 문제의 표절 여부를 확인한다. 유일성이 입증된 문제는 이더리움 기반의 블록체인을 사용하여 NFT 기술을 통해 문제를 NFT로 발행하여 거래한다. 최종적으로 표절하지 않았음이 검증된 문제를 NFT를 통해 거래함으로써 문제의 저작권 및 권리를 웹 플랫폼을 통해 거래할 수 있도록 한다. 본 논문에서는 이러한 문제 거래 웹 플랫폼 설계를 기술하며, 본 플랫폼은 문제를 쉽게 거래할 수 있도록 지원하여 문제 거래 활성화에 기여할 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.458-460
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• 2023

가공식품이라는 특정 도메인에서는 기존 검색엔진에서 많이 활용되는 BM25 만을 가지고 최저가 검색하는 데는 어려움이 있다. 본 논문에서는 BM25 외에도 검색의 정확성을 높이기 위해 HuggingFace 에 공개되어 있는 KoELECTRA 를 활용하여 개체명 인식(Named Entity Recognition 과 이진 분류모델(Binary Classification)을 Fine-tuning 하고 BM25 와 연계하여 구축한 검색시스템을 제안한다. 기존의 BM25 대비 성능 평가를 통해 효과를 검증하였다.

• Journal of Information Processing Systems
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• v.19 no.5
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• pp.641-651
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• 2023

Malicious hate speech and gender bias comments are common in online communities, causing social problems in our society. Gender bias and hate speech detection has been investigated. However, it is difficult because there are diverse ways to express them in words. To solve this problem, we attempted to detect malicious comments in a Korean hate speech dataset constructed in 2020. We explored bidirectional encoder representations from transformers (BERT)-based deep learning models utilizing hyperparameter tuning, data sampling, and logits ensembles with a label distribution. We evaluated our model in Kaggle competitions for gender bias, general bias, and hate speech detection. For gender bias detection, an F1-score of 0.7711 was achieved using an ensemble of the Soongsil-BERT and KcELECTRA models. The general bias task included the gender bias task, and the ensemble model achieved the best F1-score of 0.7166.