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| 1 | Long Short-Term Memory Recurrent Neural Network-Based Acoustic Model Using Connectionist Temporal Classification on a Large-Scale Training Corpus显示文摘A Long Short-Term Memory(LSTM) Recurrent Neural Network(RNN) has driven tremendous improvements on an acoustic model based on Gaussian Mixture Model(GMM). However, these models based on a hybrid method require a forced aligned Hidden Markov Model(HMM) state sequence obtained from the GMM-based acoustic model. Therefore, it requires a long computation time for training both the GMM-based acoustic model and a deep learning-based acoustic model. In order to solve this problem, an acoustic model using CTC algorithm is proposed. CTC algorithm does not require the GMM-based acoustic model because it does not use the forced aligned HMM state sequence. However, previous works on a LSTM RNN-based acoustic model using CTC used a small-scale training corpus. In this paper, the LSTM RNN-based acoustic model using CTC is trained on a large-scale training corpus and its performance is evaluated. The implemented acoustic model has a performance of 6.18% and 15.01% in terms of Word Error Rate(WER) for clean speech and noisy speech, respectively. This is similar to a performance of the acoustic model based on the hybrid method. | Donghyun Lee Minkyu Lim Hosung Park Yoseb Kang Jeong-Sik Park Gil-Jin Jang Ji-Hwan Kim | 2017 | China Communications2017，14，9： | 7 |
| 2 | Preoperative serum carbohydrate antigen 19-9 levels predict early recurrence after the resection of early-stage pancreatic ductal adenocarcinoma显示文摘BACKGROUND Pancreatic ductal adenocarcinoma(PDAC)is a serious disease with a poor prognosis.Only a minority of patients undergo surgery due to the advanced stage of the disease,and patients with early-stage disease,who are expected to have a better prognosis,often experience recurrence.Thus,it is important to identify the risk factors for early recurrence and to develop an adequate treatment plan.AIM To evaluate the predictive factors associated with the early recurrence of earlystage PDAC.METHODS This study enrolled 407 patients with stage I PDAC undergoing upfront surgical resection between January 2000 and April 2016.Early recurrence was defined as a diagnosis of recurrence within 6 mo of surgery.The optimal cutoff values were determined by receiver operating characteristic(ROC)analyses.Univariate and multivariate analyses were performed to identify the risk factors for early recurrence.RESULTS Of the 407 patients,98 patients(24.1%)experienced early disease recurrence:26(26.5%)local and 72(73.5%)distant sites.In total,253(62.2%)patients received adjuvant chemotherapy.On ROC curve analysis,the optimal cutoff values for early recurrence were 70 U/mL and 2.85 cm for carbohydrate antigen 19-9(CA 19-9)levels and tumor size,respectively.Of the 181 patients with CA 19-9 level>70 U/mL,59(32.6%)had early recurrence,compared to 39(17.4%)of 226 patients with CA 19-9 level≤70 U/mL(P<0.001).Multivariate analysis revealed that CA 19-9 level>70 U/mL(P=0.006),tumor size>2.85 cm(P=0.004),poor differentiation(P=0.008),and non-adjuvant chemotherapy(P=0.025)were significant risk factors for early recurrence in early-stage PDAC.CONCLUSION Elevated CA 19-9 level(cutoff value>70 U/mL)can be a reliable predictive factor for early recurrence in early-stage PDAC.As adjuvant chemotherapy can prevent early recurrence,it should be recommended for patients susceptible to early recurrence. | Sarang Hong Ki Byung Song Dae Wook Hwang Jae Hoon Lee Woohyung Lee Eunsung Jun Jaewoo Kwon Yejong Park Seo Young Park Naru Kim Dakyum Shin Hyeyeon Kim Minkyu Sung Yunbeom Ryu Song Cheol Kim | 2021 | World Journal of Gastrointestinal Surgery2021，13，11： | 2 |
| 3 | Changes in spatial variations of sap flow in Korean pine trees due to environmental factors and their effects on estimates of stand transpiration显示文摘It is difficult to scale up measurements of the sap flux density(J_S) for the characterization of tree or stand transpiration(E) due to spatial variations in J_S and their temporal changes.To assess spatial variations in the sap flux density of Korean pine(Pinus koraiensis) and their effects on E estimates,we measured the J_S using Granier-type sensors.Within trees,the J_S decreased exponentially with the radial depth,and the J_S of the east aspects were higher than those of the west aspects.Among trees,there was a positive relationship between J_S and the tree diameter at breast height,and this positive relationship became stronger as the transpiration demand increased.The spatial variations that caused large errors in E estimates(i.e.,up to 110.8 % when radial variation was ignored) had varied systematically with environmental factors systematic characteristics in relation to environmental factors.However,changes in these variations did not generate substantial errors in the E estimates.For our study periods,the differences in the daily E(E_D) calculated by ignoring radial,azimuthal and tree-to-tree variations and the measured E_D were fairly constant,especially when the daily vapor pressure deficit(D_D)was higher than 0.6 k Pa.These results imply that the effect of spatial variations changes on sap flow can be a minor source of error compared with spatial variations(radial,azimuthal and tree-to-tree variations) when considering E estimates. | Minkyu MOON Taek-yu KIM Juhan PARK Sungsik CHO Daun RYU Sanguk SUH Hyun Seok KIM | 2016 | Journal of Mountain Science2016，13，6： | 2 |
| 4 | Concentration Characteristics of Atmos-pheric PCBs for Urban and Rural Area, Korea 显示文摘 | Yeo Hyun-Gu Choi Minkyu Chun Man-Young | 2004 | Sci Total Environ2004，324，13： | 1 |
| 5 | A clock feed through reduction circuit for switched-current systems显示文摘 | | 1993 | IEEE J of Solid-state Circuits1993，28，1： | 1 |
| 6 | The role of phase impurities and lattice defects on the electron dynamics and photochemistry of CuFeO2 solar photocathodes显示文摘CuFeO2 is a promising photocathode for H2 evolution and CO2 reduction reactions.To better understand the complex defect chemistry and role of impurity phases in this material and their effect on the photochemical performance,we employ visible light transient absorption spectroscopy and density functional theory(DFT)calculations to investigate the electron dynamics in electrochemically deposited Cu-Fe oxide thin films.Kinetic analysis of carrier lifetime shows a fast,sub-ps contribution to relaxation followed by persistence of a Iong-lived state to time delays greater than 2 ns.Increasing amplitude of the Iong-lived state is shown to correlate with the rate of fast initial relaxation,and this is explained in terms of a competition between charge carrier trapping and charge separation.Charge separation in CuFeO2 occurs via hole thermalizati on from O 2p to Cu 3d vale nee band states leadi ng to segregatio n of electr ons and holes across layers in the CuFeO2 lattice.Correlation between transient absorption measurements and DFT calculations suggest that Cu vacancies enhanee photochemical performance by facilitating charge separation kinetics.In contrast,O interstitials are predicted to switch the relative positions of O 2p and Cu 3d vale nee band states,which would in hibit charge separatio n by in ter-band hole thermal izatio n.Fin ally,we find no evide nee for electron in jecti on from CuFeO2 to CuO suggest!ng that charge separati on at this heterostructure in terface does not play a role in the carrier lifetime or photochemical performance of the catalysts studied here. | Elizabeth A. Fugate Somnath Biswas Mathew C. Clement Minkyu Kim Dongjoon Kim Aravind Asthagiri L. Robert Baker | 2019 | Nano Research2019，12，9： | 1 |
| 7 | Historical Trends of PCDDs, PCDFs, Dioxinlike PCBs and Nonylphenols in Dated Sediment Cores from a Semienclosed Bay in Korea: Tracking the Sourees显示文摘 | Moon Hyo-Bang Choi Minkyu Choi Hee-Gu et al | 2009 | Chemosphere2009，75，5： | 1 |
| 8 | Modal scattering: a key to understanding oceanic T-waves显示文摘 | Minkyu P Robert I O | 2001 | Geophys Res Lett2001，28，： | 1 |
| 9 | Localised discrete Fourier transform-spread M-ary amplitude shift keying orthogonal frequency division multiplexing with Hermitian symmetry for peakto-average power ratio reduction显示文摘 | MINKYU S JAEHOON L JICHAI J | 2014 | IET Commun2014，8，11： | 1 |
| 10 | Properties and crosscorrelation of decimated sidelnikov sequeaces显示文摘 | KIM Youngtae SONG Minkyu KIM Daesan | 2014 | IEICE Transactions on Fundamentals2014，97，12： | 1 |
| 11 | Phase I study of 3-weekly combination chemotherapy using epirubicin,oxaliplatin,and S-1(EOS) in patients with previously untreated advanced gastric cancer显示文摘 | Sun Jin Sym Junsik Hong Minkyu Jung | | 0，，02： | 1 |
| 12 | The immunoenhancing property of a dietary casein phosphopeptide preparation in mice 显示文摘 | Otani H Kihara Y Minkyu P | 2000 | Food Agricult Immunol2000，12，2： | 1 |
| 13 | Physics of engineered protein hydrogels显示文摘 | Minkyu Kim Shengchang Tang Bradley D. Olsen | 2013 | J. Polym. Sci. B Polym. Phys2013，，7： | 1 |
| 14 | Polybrominated diphenyl ethers (PBDEs) in marine sediments from industrialized bays of Korea 显示文摘 | Hyo-Bang Moon Kurunthachalam Kannan Minkyu Choi | 2007 | Marine Pollution Bulletin2007，54，： | 1 |
| 15 | A Power Line Communication Network Infrastructure for the Smart Home显示文摘 | Lin Yuju Latchman A H Lee Minkyu | 2002 | IEEE Wireless Communications:2002，9，6： | 1 |
| 16 | Modeling of colloidal fouling in forward osmosis membrane: Effects of reverse draw solution permeation 显示文摘 | Minkyu Park Jijung Lee Chanhee Boo | 2013 | Desalination2013，28，14： | 1 |
| 17 | Deep-learning-based gas identification by timevariant illumination of a single micro-LEDembedded gas sensor显示文摘Electronic nose(e-nose)technology for selectively identifying a target gas through chemoresistive sensors has gained much attention for various applications,such as smart factory and personal health monitoring.To overcome the crossreactivity problem of chemoresistive sensors to various gas species,herein,we propose a novel sensing strategy based on a single micro-LED(μLED)-embedded photoactivated(μLP)gas sensor,utilizing the time-variant illumination for identifying the species and concentrations of various target gases.A fast-changing pseudorandom voltage input is applied to the μLED to generate forced transient sensor responses.A deep neural network is employed to analyze the obtained complex transient signals for gas detection and concentration estimation.The proposed sensor system achieves high classification(~96.99%)and quantification(mean absolute percentage error~31.99%)accuracies for various toxic gases(methanol,ethanol,acetone,and nitrogen dioxide)with a single gas sensor consuming 0.53 mW.The proposed method may significantly improve the efficiency of e-nose technology in terms of cost,space,and power consumption. | Incheol Cho Kichul Lee Young Chul Sim Jae-Seok Jeong Minkyu Cho Heechan Jung Mingu Kang Yong-Hoon Cho Seung Chul Ha Kuk-Jin Yoon Inkyu Park | 2023 | Light(Science & Applications)2023，12，5： | 1 |
| 18 | A Power Line Communication Network Infrastructure for the Smart Home 显示文摘 | Lin Yuju Latchman A H Lee Minkyu | 2002 | IEEE Wireless Communications:2002，9，6： | 1 |
| 19 | Pharmacogenomic Assessment of Outcomes of Pemetrexed-Treated Patients with Adenocarcinoma of the Lung显示文摘 | Minkyu Jung Chul Ho Lee | 2013 | Yonsei Med J2013，54，4： | 1 |
| 20 | Concentration distribution of polychlorinated biphenyls and organochlorine pesticides and their relationship with temperature in rural air of Korea显示文摘 | Hyun-Gu Yeoa Minkyu Choia Man-Young Chunb | 2003 | Atmospheric Environment2003，37，： | 1 |
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