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Ma, Ming,Kim, Jung Kyu,Zhang, Kan,Shi, Xinjian,Kim, Sung June,Moon, Jun Hyuk,Park, Jong Hyeok American Chemical Society 2014 Chemistry of materials Vol.26 No.19
<P>For the first time, double-deck WO<SUB>3</SUB>/BiVO<SUB>4</SUB> inverse opal photoanodes (DDIO-WO<SUB>3</SUB>/BiVO<SUB>4</SUB>) were prepared by swelling–shrinking mediated polystyrene template synthetic routes, and the use of the photoanodes in photoelectrochemical cells under simulated solar light was investigated. The double-deck photoanodes represented the compact interface between WO<SUB>3</SUB> and BiVO<SUB>4</SUB>, inheriting the periodically ordered macroporous nanostructure. More significantly, the DDIO-WO<SUB>3</SUB>/BiVO<SUB>4</SUB> inverse opal photoanodes prepared from the optimized fabrication condition demonstrated a photocurrent that was ∼40 times higher than that of the pure inverse opal WO<SUB>3</SUB> photoanodes at a bias of 1.23 V vs RHE. Even without an added catalyst, they produce an outstanding photocurrent density of ∼3.3 mA/cm<SUP>2</SUP> at a bias of 1.23 V vs RHE, which profits from improving the poor charge carrier mobility of BiVO<SUB>4</SUB> by combining it with a WO<SUB>3</SUB> skeleton and a shrouded bilayer inverse opal structure with a large surface area and good contact with the electrolyte.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/cmatex/2014/cmatex.2014.26.issue-19/cm502073d/production/images/medium/cm-2014-02073d_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/cm502073d'>ACS Electronic Supporting Info</A></P>
High-j Proton h11/2 and g7/2 Intruder Bands in 113In
Ma Ke Yan,Lu Jing Bin,Ma Ying Jun,Li Jian,Yang Dong,Sun Wu Ji,Wang Hao,Pan Hao Nan,Wang Jia Qi,Yang Qing Yu,Zhang Da Ming,Zhu Li Hua,Wu Xiao Guang,Zheng Yun,Li Cong Bo 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.76 No.12
Excited states of 113In have been populated through the heavy-ion fusion evaporation reaction 110Pd(7Li, 4n)113In. A new band with the configuration of a proton d5/2 orbital is identified. Two ΔI = 2 intruder bands, built on the πh11/2 and the πg7/2 orbitals, have been extended to spins (63/2-)ħ and (55/2+)ħ, respectively. The negative-parity πh11/2 intruder band shows a smooth increase in aligned spin, which is attributed to a strong proton-neutron interaction. The properties of the positive-parity πg7/2 band are discussed based on tilted axis cranking model calculations, and the features of the antimagnetic rotation for this band are shown after backbend. Furthermore, the contributions of the two-shears-like mechanism, the neutron (gd)ν shell and the core rotation are investigated for the positive-parity πg7/2 band.
Online Recognition of Handwritten Korean and English Characters
( Ming Ma ),( Dong Won Park ),( Soo Kyun Kim ),( Syung Og An ) 한국정보처리학회 2012 Journal of information processing systems Vol.8 No.4
In this study, an improved HMM based recognition model is proposed for online English and Korean handwritten characters. The pattern elements of the handwriting model are sub character strokes and ligatures. To deal with the problem of handwriting style variations, a modified Hierarchical Clustering approach is introduced to partition different writing styles into several classes. For each of the English letters and each primitive grapheme in Korean characters, one HMM that models the temporal and spatial variability of the handwriting is constructed based on each class. Then the HMMs of Korean graphemes are concatenated to form the Korean character models. The recognition of handwritten characters is implemented by a modified level building algorithm, which incorporates the Korean character combination rules within the efficient network search procedure. Due to the limitation of the HMM based method, a postprocessing procedure that takes the global and structural features into account is proposed. Experiments showed that the proposed recognition system achieved a high writer independent recognition rate on unconstrained samples of both English and Korean characters. The comparison with other schemes of HMM-based recognition was also performed to evaluate the system.
Online Recognition of Handwritten Korean and English Characters
Ma, Ming,Park, Dong-Won,Kim, Soo Kyun,An, Syungog Korea Information Processing Society 2012 Journal of information processing systems Vol.8 No.4
In this study, an improved HMM based recognition model is proposed for online English and Korean handwritten characters. The pattern elements of the handwriting model are sub character strokes and ligatures. To deal with the problem of handwriting style variations, a modified Hierarchical Clustering approach is introduced to partition different writing styles into several classes. For each of the English letters and each primitive grapheme in Korean characters, one HMM that models the temporal and spatial variability of the handwriting is constructed based on each class. Then the HMMs of Korean graphemes are concatenated to form the Korean character models. The recognition of handwritten characters is implemented by a modified level building algorithm, which incorporates the Korean character combination rules within the efficient network search procedure. Due to the limitation of the HMM based method, a post-processing procedure that takes the global and structural features into account is proposed. Experiments showed that the proposed recognition system achieved a high writer independent recognition rate on unconstrained samples of both English and Korean characters. The comparison with other schemes of HMM-based recognition was also performed to evaluate the system.
Ma, Ming,Mont, Frank W,Yan, Xing,Cho, Jaehee,Schubert, E Fred,Kim, Gi Bum,Sone, Cheolsoo Optical Society of America 2011 Optics express Vol.19 No.5
<P>We investigate the effects of the refractive index of the encapsulant on the light-extraction efficiency (LEE) of light-emitting diodes (LEDs) for GaN LEDs (n ??? 2.5) and AlGaInP LEDs (n ??? 3.0). For non-absorbing rectangular parallelepiped LED chips, as the refractive index of the encapsulant increases, the LEE first increases quasi-linearly, then increases sub-linearly, and finally a saturation is reached. Furthermore, LEDs with a dual-layer graded-refractive-index (GRIN) encapsulant (n(encapsulant 1) = 1.57 and n(encapsulant 2) = 1.41) is fabricated through a two-step curing process. We demonstrate that such an LED further enhances the LEE by reducing Fresnel reflection loss at the encapsulant/air interface by 35% compared with an LED encapsulated with a single-layer encapsulant (n(encapsulant) = 1.57).</P>
Ma Naji,Diao Ming,Hu Xiao,Sun Jian,Ma Anchang 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.5
Aiming at the increasing demand of the monitoring of mechanical vibration signals, by improving the existing Sensor Monitoring Network, a low-power wireless sensor network is designed. The data transmission efficiency is increased by using the compressed sensing (CS) technology to compress the mechanical vibration signals of the devices monitored by the network. To realize real-time processing of monitoring signals, the FPGA+DSP architecture is treated as the core of the equipment processing the mechanical vibration signals of wireless sensor network. The modified designs of the hardware circuit and logic circuit with regard to the data collection, sampling, transmission, processing and the store section are introduced initially. Further, the effects of the improved Sensor Monitoring Network are tested by the experimental study on the rotating equipment. The results show that the real-time processing can be well implemented and the power can be cut down to a certain degree.
From Henan Opera to Taiwan Bangzi-Localisation and Identity of Taiwan Bangzi
Ma Ming-Hui,Assistant professor 아시아음악학회 2014 Asian Musicology Vol.23 No.-
A foreign Henan Opera has survived, changed, and localised and established its Taiwan identity from Henan Opera to Taiwan Bangzi for more than sixty years in Taiwan, since it was introduced from China to Taiwan under a historical occasion. This paper examines the localising process from Henan Opera to Taiwan Bangzi in Taiwan from four perspectives: social and cultural background, performers, contents of scripts, and textures of music. The time frame is divided into two periods (1947-1987 and 1987-2013) to discuss the processes separately.
Ma, Jin-Bo,Chen, Er-Cheng,Song, Yi-Peng,Liu, Peng,Jiang, Wei,Li, Ming-Huan,Yu, Jin-Ming Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.4
Aims and Background: The purpose of the research was to study the prognostic value of tumor 18F-FDG PET-based parameters in neoadjuvant chemoradiation for patients with squamous esophageal carcinoma. Methods: Sixty patients received chemoradiation therapy followed by esophagectomy and two 18FDG-PET examinations at pre- and post-radiation therapy. PET-based metabolic-response parameters were calculated based on histopathologic response. Linear regression correlation and Cox proportional hazards models were used to determine prognostic value of all PET-based parameters with reference to overall survival. Results: Sensitivity (88.2%) and specificity (86.5%) of a percentage decrease of SUVmax were better than other PET-based parameters for prediction of histopathologic response. Only percentage decrease of SUVmax and tumor length correlated with overall survival time (linear regression coefficient ${\beta}$: 0.704 and 0.684, P<0.05). The Cox proportional hazards model indicated higher hazard ratio (HR=0.897, P=0.002) with decrease of SUVmax compared with decrease of tumor size (HR=0.813, P=0.009). Conclusion: Decrease of SUVmax and tumor size are significant prognostic factors in chemoradiation of esophageal carcinoma.