• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.63-66
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• 2022

본 논문에서는 분자의 특성을 정확하게 예측하기 위해 효과적인 사전학습(pretraining) 전략과 트랜스포머(Transformer) 모델을 활용한 방법을 제시한다. 딥러닝을 활용한 분자의 성능을 예측하는 연구는 그동안 레이블이 부족한 분자데이터의 특성에 의해 학습 때 사용된 데이터이외의 분자데이터에 대해 일반화 능력이 떨어지는 어려움을 겪었다. 이 논문에서 제시한 모델은 사전학습(pretraining)을 수행할 때 자기지도학습(self-supervised training)을 사용하여 부족한 레이블에 의한 문제점을 피할 수 있다. 대규모 분자 데이터셋으로부터 학습된 이 모델은 4가지 다운스트림 데이터셋에 대해 모두 우수한 성능을 보여주어 일반화 성능이 뛰어나며 효과적인 분자표현을 얻을 수 있음을 보인다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.20-22
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• 2023

본 연구는 부동산 경매 기일에 해당 지방법원 현장에 참석하기에 어려움을 느끼는 많은 개인(수요자)들을 위하여 해당 지역에 거주하는 입찰대리인들을 효율적으로 연결해주는 플랫폼이다. 본 플랫폼은 입찰대리인과의 입찰대리 계약을 체결해주는 플랫폼으로서, 입찰대리인은 기일에 경매법정에서 해당 수요자의 입찰행위를 대행한다. 이를 통해 부동산 경매 사건에 관심이 있음에도 불구하고, 시간/장소 측면의 제약으로 인하여 참여하지 못하는 대다수의 직장인들이 부동산 경매 입찰할 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.23-24
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• 2023

본 논문에서는 신호등이 설치되지 않은 위험 구역에 대해 신호등을 설치하는 것이 아닌 객체 인식 기반의 반응형 교통 시스템을 설계하여 보행자나 운전자 모두에게 사고의 위험을 줄이는 시스템을 구현한다. 특정 구역에 보행자가 길을 건너기 위해 존재한다면 운전자에게 보행자가 있음을 직관적으로 보여주며, 보행자가 길을 건너고 있으면 운전자에게 보행자가 건너고 있다는 것을 나타내어 기존의 경직적인 신호 체계가 아닌 유동적으로 보행자와 운전자 간의 안전한 환경을 만드는 것을 목표로 구현했다. 데이터는 CGMU dataset과 MIO-TCD dataset에서 사람과 차량의 이미지를 추가로 수집한 이후 학습에 사용하였으며, 객체 인식은 YOLOv5를 기반으로 사용하였으며 이때 성능은 mAP 0.753을 보여주었다.

• The Korean Journal of Oral and Maxillofacial Pathology
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• v.41 no.1
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• pp.9-16
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• 2017

Porphyromonas gingivalis is a gram-negative bacteria of rod shape, and grown in an anerobic condition. It colonizes in subgingival crevice and is known as a major pathogen causing chronic periodontitis. It possesses an invasive property and replicative potential within various cell types, presumably playing an important role in modulating biological behaviors of oral cancer. However, the pathophysiology of P. gingivalis in the malignant transformation of oral cancer has not been fully understood. In this study, we aimed to investigate molecular changes of oral squamous cell carcinoma cells induced by repetitive P. gingivalis infection that clinically resembles chronic periodontitis.

• Journal of Medicine and Life Science
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• v.16 no.1
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• pp.23-26
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• 2019

Total scalp irradiation is a challenging treatment because of unique concave target volume and difficulty with bolus applying. There are few reports about bolus applying methods to the entire scalp in detail. Application of conventional bolus (wax or superflab) is widely used, and it is considered effective. However, the curvature and irregularity of the scalp can produce significant air gap, resulting in inadequate radiation dose distribution. We describe a new method to applying the bolus to the entire scalp. We sutured 1 cm thickness superflab bolus on the thermoplastic mask using cotton string. This method can reduce the air gap between the bolus and scalp and be reproducible.

• The Journal of Internal Korean Medicine
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• v.40 no.2
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• pp.201-207
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• 2019

Objectives: The purpose of this case study is to report the effect of Korean Medicine treatment on a patient diagnosed with drug-induced liver injury by oral administration of acetaminophen. Methods: A 21-year-old male patient with drug-induced liver injury visited the clinic five times from January 28th, 2019 to March 16th, 2019. The patient took Saenggan-tang extract during the treatment period. Results: The levels of serum alanine aminotransferase (ALT) and gamma-glutamyl transferase (GGT) were significantly decreased. The chief complaints of the patient, such as yellow-red urine and fatigue, were also relieved. Conclusion: Traditional Korean medicine has a beneficial effect on drug-induced liver injury.

• Journal of the Korean neurological association
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• v.36 no.4
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• pp.341-344
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• 2018

It is uncommon for Fabry's disease (FD) patient to present with an isolated ischemic stroke without other typical symptoms or signs of FD. A 48-year-old woman presented with recurrent limb weakness and her brain magnetic resonance imaging revealed multiple ischemic brain lesions. Ten years ago, the patient had been diagnosed with heterozygote FD by the genetic test, but she had not shown any typical symptoms or sign of FD so far. Isolated organ involvement could occur in heterozygote FD.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.6
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• pp.15-22
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• 2018

The purpose of this study was to suggest specific evaluation data for heating and DHW energy consumption characteristics through analyzing energy consumption measurement data of gas boiler in Apartment Buildings with individual heating systems. To do this, it was measured both gas flow and electricity for heating and DHW respectively, and then it was analyzed not only characteristics according to energy sources; gas and electricity, but also the effect of various factors on heating and DHW energy consumption. The result of this study were as follows. It was developed the electric energy estimation model of a gas boiler through analysis on patterns by energy sources. And the effective factors for heating and DHW energy consumption were demonstrated as follows: the area for exclusive use, the number of auxiliary heating equipments, the number of occupants, and the number of sanitary fixtures.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.34 no.10
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• pp.19-26
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• 2018

The purpose of this study was to analyze characteristics and to develop estimation model of IHG(Internal Heat Gain) from appliance in domestic apartment units. To do this, it was defined the source of IHG from appliance and the calculation method through the case study of international and domestic codes. And the equipment related datum such possession, usage or not, etc were collected through field survey in apartment units, and the appliances' electricity consumption were measured separately from overall electricity consumption. Annual electricity consumption value were calculated with field survey datum and appliances' electricity consumption measurement datum, and then IHG value was calculated by applying PHPP v9 method. And it was conducted correlation analysis between IHG value and the area for exclusive use, the number of occupants, and then the IHG from applianace estimation model was deducted with regression analysis. Finally, it was analyzed the present level and of the domestic code(The Building Energy Efficiency Rating System) comparing with the value of estimation model, and the various international codes(HERS, Building America, SAP).

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.634-637
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• 2013

개인정보 영향평가(이하 PIA)는 시스템을 가동하기 전에 미리 개인정보 제공자의 프라이버시에 미치는 영향을 평가하여 프라이버시 침해 위험을 감소시키는 평가방법이다. 일본에서는 민간 기업이 중심이 되어 PIA를 실시해왔으며, PIA 보급을 위한 지침과 위험도 평가 방법을 개발하여 유효성 평가에 관한 연구가 이루어지고 있다. 본 발표에서는 일본의 PIA실시 현황과 2016년부터 공공기관에 의무화 될 예정인 마이 넘버(My Number) 제도에 대한 PIA에 관해 발표하겠다.