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English Translation Based on Neural Machine Translation Using Transformer
Jongho Won,Min Dong Jin,Deok-Hwan Kim 한국차세대컴퓨팅학회 2022 한국차세대컴퓨팅학회 학술대회 Vol.2022 No.10
Machine translation is one of the classic sub-fields of natural language processing, a field that has been studied for a long time. There are several methods related to machine translation, and neural machine translation is one of them. Neural machine translation is a method that translates the source sentence to the target sentence through a neural network model. Recently, the transformer model using the attention mechanism has become the SOTA technique in the field. In this research, the transformer model using the attention mechanism is trained through 2 parallel corpora: English-German and English-Korean. The results of translations are evaluated with a BLEU score for each. The transformer shows an 8.60 BLEU score when trained by the English-German parallel corpora, and a 0.43 BLEU score in the case of English-Korean. It seems like the reason why the performance of English-German translations is higher than the performance of English-Korean translations is that English and Germany are in the Germanic language family, which is the same. In contrast, unlike English, Korean belongs to Altaic or Isolated languages and has different linguistic characteristics. The performance of the transformer is also affected by the quality of the parallel corpus used for training. It can be interpreted that it is necessary to secure a higher quality English-Korean parallel corpus.
An Adaptive Power-Controlled Routing Protocol for Energy-limited Wireless Sensor Networks
Won, Jongho,Park, Hyung-Kun The Korea Institute of Information and Commucation 2018 Journal of information and communication convergen Vol.16 No.3
Wireless sensor networks (WSN) are composed of a large number of sensor nodes. Battery-powered sensor nodes have limited coverage; therefore, it is more efficient to transmit data via multi-hop communication. The network lifetime is a crucial issue in WSNs and the multi-hop routing protocol should be designed to prolong the network lifetime. Prolonging the network lifetime can be achieved by minimizing the power consumed by the nodes, as well as by balancing the power consumption among the nodes. A power imbalance can reduce the network lifetime even if several nodes have sufficient (battery) power. In this paper, we propose a routing protocol that prolongs the network lifetime by balancing the power consumption among the nodes. To improve the balance of power consumption and improve the network lifetime, the proposed routing scheme adaptively controls the transmission range using a power control according to the residual power in the nodes. We developed a routing simulator to evaluate the performance of the proposed routing protocol. The simulation results show that the proposed routing scheme increases power balancing and improves the network lifetime.
염화수소 및 불화수소 영향범위 예측을 위한 간이 방법 개발
원종호(Jongho Won),김병훈(Byounghoon Kim),마병철(Byungchol Ma),윤이(Yi Yoon),조아라(A Ra Jo),천영우(Young Woo Chon),문진영(Jin Young Moon) 한국위험물학회 2016 한국위험물학회지 Vol.4 No.2
Ministry of Environment has been designated 69 accident prevent materials, of which explosiveness or acute toxity is strong so that would cause explosion or serious accidents, as substances requiring preparation for accidents in Chemical Management Act. Among them are toxic and spread out in short time 22 chemicals, which can cause serious damage to the human body and the environment. Prevent measure from chemical release is can be the best practice, however it is also important to estimate the effect distance and minimize the damage for emergency response. In this study, we selected hydrogen chloride and hydrogen fluoride for developing the simplified estimating method and equation to calculate effect distance. Also we calculated the effect distance for toxic endpoints of hydrogen chloride and hydrogen fluoride(release rate 0.001 ㎥/s ~ 10 ㎥/s) at different ground roughness(open country and urban) based on the worst/ alternative case scenario by using the ALOHA, KORA and PHAST programs. Finally, we find the dispersion trends and suggest a simplified quick estimate formula such as y=Ax<SUP>B</SUP> (R² 0.95). The new method of this research will be easy and useful for estimating effect distance without simulating risk assessment tools.
블록체인 분석 플랫폼을 위한 시계열 인덱스 설계 및 구현
원종호 ( Jongho Won ),장미영 ( Mi-young Jang ),설동명 ( Dong-myung Sul ),김지용 ( Ji-yong Kim ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
블록체인 분석 플랫폼은 블록체인에 저장된 데이터 기반의 다양한 산업분야 활용성 증대를 위하여 분산 블록체인 기반 대규모/대용량 데이터에 대한 고속 분석을 통하여 신뢰성이 보장되는 보안과 신뢰 기반의 데이터 서비스를 제공하기 위한 분석 플랫폼이다. 본 논문에서는 블록체인 분석 플랫폼에서 제공하는 데이터 분석 중 시계열 데이터에 대한 고성능의 분석을 제공하기 위한 시계열 데이터 인덱스의 설계와 구현에 대하여 기술한다.
Ahn, Jongho,Oh, Sora,Lee, HyunKyung,Lee, Sangjun,Song, Chang Eun,Lee, Hang Ken,Lee, Sang Kyu,So, Won-Wook,Moon, Sang-Jin,Lim, Eunhee,Shin, Won Suk,Lee, Jong-Cheol American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.33
<P>Most non-fullerene acceptors (NFAs) are designed in a complex planar molecular conformation containing fused aromatic rings in high-efficiency organic solar cells (OSCs). To obtain the final molecules, however, numerous synthetic steps are necessary. In this work, a novel simple-structured NFA containing alkoxy-substituted benzothiadiazole and a rhodanine end group (BTDT2R) is designed and synthesized. We also investigate the photovoltaic properties of BTDT2R-based OSCs employing representative polymer donors (wide band gap and high-crystalline P3HT, medium band gap and semicrystalline PPDT2FBT, and narrow band gap and low-crystalline PTB7-Th) to compare the performance capabilities of fullerene acceptor-based OSCs, which are well matched with various polymer donors. OSCs based on P3HT:BTDT2R, PPDT2FBT:BTDT2R, and PTB7-Th:BTDT2R achieved efficiency as high as 5.09, 6.90, and 8.19%, respectively. Importantly, photoactive films incorporating different forms of optical and molecular ordering characteristics exhibit favorable morphologies by means of solvent vapor annealing. This work suggests that the new n-type organic semiconductor developed here is highly promising as a universal NFA that can be paired with various polymer donors with different optical and crystalline properties.</P> [FIG OMISSION]</BR>
Exploring the nature of the 2016 γ-ray emission in the blazar 1749+096
Kim, Dae-Won,Trippe, Sascha,Lee, Sang-Sung,Kim, Jae-Young,Algaba, Juan-Carlos,Hodgson, Jeffrey,Park, Jongho,Kino, Motoki,Zhao, Guang-Yao,Wajima, Kiyoaki,Lee, Jee Won,Kang, Sincheol Oxford University Press 2018 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.480 No.2
Li, Hong-Mei,Jang, Ji Hye,Jung, Jun-Sub,Shin, Jiseon,Park, Chul O.,Kim, Yeon-Ja,Ahn, Won-Gyun,Nam, Ju-Suk,Hong, Chang-Won,Lee, Jongho,Jung, Yu-Jin,Chen, Jiang-Fan,Ravid, Katya,Lee, H. Thomas,Huh, Won- American Association of Immunologists 2019 Journal of Immunology Vol. No.
<P>G2A is a GPCR abundantly expressed in immune cells. G2A<SUP>−/−</SUP> mice showed higher lethality, higher plasma cytokines, and an impaired bacterial clearance in response to a murine model of sepsis (cecal ligation and puncture), which were blocked by GdCl<SUB>3</SUB>, an inhibitor of Kupffer cells. Anti–IL-10 Ab reversed the impaired bacterial clearance in G2A<SUP>−/−</SUP> mice. Indomethacin effectively blocked both the increased i.p. IL-10 levels and the impaired bacterial clearance, indicating that disturbed PG system is the proximal cause of these phenomena. Stimulation with LPS/C5a induced an increase in <I>Escherichia coli</I> phagocytosis and intracellular cAMP levels in G2A<SUP>+/+</SUP> peritoneal macrophages but not G2A<SUP>−/−</SUP> cells, which showed more PGE<SUB>2</SUB>/nitrite release and intracellular reactive oxygen species levels. Heterologous coexpression of G2A and adenosine receptor type 2b (A2bAR) induced a synergistic increase in cAMP signaling in a ligand-independent manner, with the evidence of physical interaction of G2A with A2bAR. BAY 60-6583, a specific agonist for A2bAR, increased intracellular cAMP levels in Kupffer cells from G2A<SUP>+/+</SUP> but not from G2A<SUP>−/−</SUP> mice. Both G2A and A2bAR were required for antiseptic action of lysophosphatidylcholine. These results show inappropriate activation of G2A<SUP>−/−</SUP> Kupffer cells to septic insults due to an impaired cAMP signaling possibly by lack of interaction with A2bAR.</P>
How to train your dragon : example-guided control of flapping flight
Won, Jungdam,Park, Jongho,Kim, Kwanyu,Lee, Jehee Association for Computing Machinery 2017 ACM transactions on graphics Vol.36 No.6
<P>Imaginary winged creatures in computer animation applications are expected to perform a variety of motor skills in a physically realistic and controllable manner. Designing physics-based controllers for a flying creature is still very challenging particularly when the dynamic model of the creatures is high-dimensional, having many degrees of freedom. In this paper, we present a control method for flying creatures, which are aerodynamically simulated, interactively controllable, and equipped with a variety of motor skills such as soaring, gliding, hovering, and diving. Each motor skill is represented as Deep Neural Networks (DNN) and learned using Deep Q-Learning (DQL). Our control method is example-guided in the sense that it provides the user with direct control over the learning process by allowing the user to specify keyframes of motor skills. Our novel learning algorithm was inspired by evolutionary strategies of Covariance Matrix Adaptation Evolution Strategy (CMA-ES) to improve the convergence rate and the final quality of the control policy. The, effectiveness of our Evolutionary DQL method is demonstrated with imaginary winged creatures flying in a physically simulated environment and their motor skills learned automatically from user-provided keyframes.</P>
Jongho Moon(문종호),Dongho Won(원동호) 대한전기학회 2016 전기학회논문지 Vol.65 No.12
In the multi-server environment, remote user authentication has a very critical issue because it provides the authorization that enables users to access their resource or services. For this reason, numerous remote user authentication schemes have been proposed over recent years. Recently, Lin et al. have shown that the weaknesses of Baruah et al.’s three factors user authentication scheme for multi-server environment, and proposed an enhanced biometric-based remote user authentication scheme. They claimed that their scheme has many security features and can resist various well-known attacks; however, we found that Lin et al.’s scheme is still insecure. In this paper, we demonstrate that Lin et al.’s scheme is vulnerable against the outsider attack and user impersonation attack, and propose a new biometric-based scheme for authentication and key agreement that can be used in the multi-server environment. Lastly, we show that the proposed scheme is more secure and can support the security properties.