• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.404-406
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• 2021

In this paper, we propose an app application for classifying Korean food images and providing information related to Korean food. App Application consists of Flask server, Database (Mysql), and Python deep learning modules. Using the VGG16 model, 150 images of Korean foods are classified. If there is an internet environment, anyone can easily get information about Korean food anytime, anywhere with a single photo.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.257-258
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• 2024

현재 시각장애인들이 현금을 사용하게 될 시 지폐가 얼마인지 확인할 방법이 없어 불편을 겪거나 금전적 사기를 당할 위험이 잦다. 한국은행에서는 이러한 사고를 막기 위해 점자 지폐를 만들어 발부하고 있지만 시각장애인 91%가 식별하지 못해 많은 불편을 겪고 있다. 본 논문에서는 딥러닝을 활용하여 화폐를 인식하고 TTS 기술을 사용하여 지폐의 값이 얼마인지 소리로 알려주는 시스템을 개발하였다. 지폐 인식을 위해 데이터를 직접 수집하여 YOLOv5 알고리즘을 활용하여 학습시킨 Weights 파일을 사용하였다. 이를 활용하여 시각장애인들은 더 안전하게 현금을 사용하고, 금전적인 문제를 예방할 수 있다.

• Journal of Korean Medical classics
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• v.12 no.1
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• pp.113-138
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• 1999

Distension of hydrops is the pathosis that the hydration is retented in abdomen and that is caused by disturbance of hydrometabolism. Most of hydrops belongs to Consolidation. In part of OhRyungJinAek-Byeul of Youngchu"靈樞 五癃津液別", the general explanation of hydrops is briefed. But there was nothing about pathogenesis, pathology, symptoms and the method of treatment. The part SuChang of Youngchu "靈樞 水脹" divided it by Superficial-swelling, Hidden-swelling, Ovarian-hydrops, Stony-uterin-mass and explained it to cure by Category of pathology. So, the books JeByeongWonHuRon"諸病源候論" ChonGeumYoBang"千金要方", WoiDaeBiYo"外臺秘要", TaePyeungSeongHyeBang"太平聖惠方", BoJeBang"普濟方", EuiHakGangMok"醫學綱目", DongEuiBoGam"東醫寶鑑" etc. published later, show the method of treatments and medications with quotation the original text of this part. And it is convinced that more profound research of this part is inevitable to understand the correct meaning of hydrops that explained by many of ancient medical scholars, and to apply it to clinical medicine. There is an explanation on Distension hydrops in the prologue of this part. And t six kinds of disease in this part is simila to edema, so it is called SuChang"水脹", pathology of Edema. Superficial-swellin Hidden-Swelling is reported in the fir chapter, differential diagnosis of Ovarian-hydrops, Stony-uterin-mass is rep in the second chapter, and treatment Superficial swelling. Hidden Swelling reported in the third chapter. Briefly looking over that chapter, Distension of hydrops is recognized as stay of hydration at the abdomen as a result of disturbance of hydrometabolism and it says about symtoms, pathogenesis, pathology, differential diagnosis, treatment of Hydrops Superficial-swelling Hidden-swelling Ovarian-hydrops Stony-uterinmass. And it says about a few things that Superficial-swelling, Hidden-swelling could be differentiated by colors of skin and distension of abdomen, and Ovarian-hydrops, Stony-ulerin-mass could be differentiated that it occurs which sex and whether mensturation occurs or not, and treatment of Superficial-swelling, Hidden-swelling, Ovarian-hydrops.

• Korean Journal of Soil Science and Fertilizer
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• v.49 no.6
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• pp.751-759
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• 2016

It is known that the poor soil fertility of newly reclaimed saline soils is due to the lack of organic matter and available mineral nutrients for crop production. The effect of green manuring with Sesbania aculeata in combination with five rates of urea-N treatments (N0. N25, N50, N75, N100) on the productivity of a subsequent whole-crop barley and the fertility of the reclaimed saline soil in Saemangeum was evaluated in the field during 2013-2014 growing season. Sesbania was grown during summer season (June to October). The amount of Sesbania incorporated was $16.2Mg\;ha^{-1}$. Sesbania contributed to $393kg\;N\;ha^{-1}$ to the soils when ploughed down and incorporated before whole-crop barley cultivated. The performances of whole-crop barley following sesbania incorporation were significantly affected by a combination of Sesbania manuring and different N rates. The N fertilizer equivalence without N fertilizer following Sesbania was 42.6% ($63.9kg\;N\;ha^{-1}$), compared with N100 ($150kg\;N\;ha^{-1}$) in fallow soils. The whole-crop barley yield responded to N fertilizer rates in both sesbania-amended and fallow soil. The yield response to nitrogen rates in fallow soil was linear (Y=0.0586X+3.3011, $R^2=0.9534$), whereas that in sesbania-amended soils was quadratic (Y= -0.001X2+0.1322X+5.7143, $R^2=0.9576$). The yield of whole-crop barley in sesbania-amended with increasing N rates was increased up to SN75 (115 kgN) $10.3Mg\;ha^{-1}$. Apparent N recovery (ANR) of whole-crop barely showed decreased with sesbania plus increasing rates of N fertilizer. Despite higher yield with sesbania manuring plus increasing N rates, the contributions of N from Sesbania with increasing N rates to whole-crop barley were decreased, whereas those from fertilizer increment due to excessively mineralized Nitrogen. Considering yield, ANR, N contribution from Sesbania and nitrogen fertilizer, the optimum N rate was N50 rate following sesbania incorporation.

• Journal of the Korean Wood Science and Technology
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• v.44 no.1
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• pp.124-134
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• 2016

The main goal of this study was to investigate biomodification mechanism of lignin by white rot fungus, Abortiporus biennis, and to depolymerize ethanol organosolv lignin for industrial application. In nitrogen-limited culture, A. biennis polymerized mainly lignin showing a rapid increase of molecular weight and structural changes depending on incubation days. At the initial incubation days, cleavage of ether bonds increased phenolic OH content, while the results were contrary in of the later part of the culture. Based on these results, ascorbic acid as a reducing agent was used to induce depolymerization of lignin during cultivation with white rot fungus. As a result, the degree of increase of average molecular weight of lignin was significantly declined when compared with those of the ascorbic acid free-experiment, although the molecular weight of fungus treated sample slightly increased than that of control. Furthermore, lignin derived oligomers in culture medium were depolymerized with the addition of ascorbic acid, showing that the average molecular weight was 381 Da, and phenolic OH content was 38.63%. These depolymerized lignin oligomers were considered to be applicable for industrial utilization of lignin. In conclusion, A. biennis led to the polymerization of lignin during biomodification period. The addition of ascorbic acid had a positive effect on the depolymerization and increase of phenolic OH content of lignin oligomers in medium.

• The Journal of Engineering Geology
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• v.24 no.4
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• pp.583-595
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• 2014

The chemical properties and composition (pH, CaO, Fe, $HCO{_3}^-$, and $SO{_4}^{2-}$) of groundwater (GW) and surface water (SW) from the northern (non-carbonate bedrock) and southern (carbonate bedrock) sections of the Daedong River, Pyeongyang were analyzed and compared period of the 1930s. In the southern section, the GW and SW has a higher pH and $SO{_4}^{2-}$ concentration, but lower $HCO{_3}^-$ and Fe levels than in the north. This finding reflects a reaction that formed acid by replacing metal ions in inorganic salts by hydrogen, which resulted from the oxidation of organic material in a clay layer.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.311-314
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• 2014

본 논문은 Unity3D와 게임서버엔진인 ProudNet을 이용해 네트워크 게임을 개발한 방법을 설명하였다. ProudNet 서버를 Unity3D 클라이언트와 연결하여 네트워크 기능을 구현할 때 ProudNet의 어떤 기능을 쓰며 또 서버가 보낸 메시지를 클라이언트가 어떠한 방식을 이용하여 메시지를 처리하게 구현하였는지를 설명하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.495-498
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• 2014

본 논문에서는 2014년도 청강문화산업대학교 게임 전공의 졸업 작품 프로젝트 중 "Majesty on Sword:위대함이 깃든 검"이라는 액션 게임 개발을 정리한 것이다. 이 게임은 기본 게임이 가지고 있는 단점인 수많은 적들을 한꺼번에 사냥하는 과장된 액션의 지루하고 단순한 패턴에서 벗어나 스킬 시스템의 구현과 캐릭터의 사실적인 액션을 강조하여 기존 액션게임과 어떤 차별점을 두고 개발하였는지 기술한 논문이다.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.42 no.4
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• pp.228-233
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• 2006

The transmittance properties of fishing lamp of the squid jigging vessel was investigated during nighttime operations in the Northwest Pacific on 21 and 29 September 2005. The metal halide lamps of white color($2.0kW{\times}168$) in the air and metal halide lamp of white color($10.0kW{\times}1$) in the underwater were used as a fishing lamp for gathering squids. The relative irradiance of metal halide lamp in the air showed peak in 850nm of wave length. The relationship between underwater illuminance(Y) and water depth(X) of metal halide lamp light in the observation areas is represented, $Y=84.137e^{-0.1105X},\;R^2=0.9974$. The distribution of underwater illuminance of measure points St. 1-5 showed low value of 0.11x in 80m depth.

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.26.1-26.1
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• 2011

We investigated the atomic layer deposition (ALD) process for nitrogen doped ZnO and the application for n-ZnO : N/p-Si (NW) coaxial hetero-junction photodetectors. ALD ZnO:N was deposited using diethylzinc (DEZ) and diluted $NH_4OH$ at $150^{\circ}C$ of substrate temperature. About 100~300 nm diameter and 5 um length of Si nanowires array were prepared using electroless etching technique in 0.108 g of $AgNO_3$ melted 20 ml HF liquid at $75^{\circ}C$. TEM images showed ZnO were deposited on densely packed SiNW structure achieving extraordinary conformality. When UV (360 nm) light was illuminated on n-ZnO:N/p-SiNW, I-V curve showed about three times larger photocurrent generation than film structure at 10 V reverse bias. Especially, at 660 nm wave length, the coaxial structure has 90.8% of external quantum efficiency (EQE) and 0.573 A/W of responsivity.