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Your search keyword '"Jin, Hao-Ran"' showing total 7 results
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7 results on '"Jin, Hao-Ran"'

3. Burden and Trends of Inflammatory Bowel Disease in Five Asian Countries From 1990 To 2019: A Comparison With the United States and the United Kingdom

Author

Gu, Wan-Jie, primary, Ning, Fei-Long, additional, Jin, Hao-Ran, additional, Zhao, Zhe-Ming, additional, Lyu, Jun, additional, Pei, Jun-Peng, additional, Cao, Shi-Yi, additional, Zeng, Yong-Ji, additional, Abe, Masanobu, additional, Nishiyama, Kazuhiro, additional, and Zhang, Chun-Dong, additional

Published
2022
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5. Speaker Localization Based on Audio-Visual Bimodal Fusion.

Author

Zhu, Ying-Xin and Jin, Hao-Ran

Subjects
*HUMAN-computer interaction, *SPATIOTEMPORAL processes, *ALGORITHMS, *MICROPHONE arrays, *MICROPOSITIONING systems
Abstract

The demand for fluency in human–computer interaction is on an increase globally; thus, the active localization of the speaker by the machine has become a problem worth exploring. Considering that the stability and accuracy of the single-mode localization method are low, while the multi-mode localization method can utilize the redundancy of information to improve accuracy and anti-interference, a speaker localization method based on voice and image multimodal fusion is proposed. First, the voice localization method based on time differences of arrival (TDOA) in a microphone array and the face detection method based on the AdaBoost algorithm are presented herein. Second, a multimodal fusion method based on spatiotemporal fusion of speech and image is proposed, and it uses a coordinate system converter and frame rate tracker. The proposed method was tested by positioning the speaker stand at 15 different points, and each point was tested 50 times. The experimental results demonstrate that there is a high accuracy when the speaker stands in front of the positioning system within a certain range. [ABSTRACT FROM AUTHOR]

Published
2021
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6. THE THEORY OF NONLINEAR FREQUENCY MIXING IN TRANSVERSE ZEEMAN LASER

Author

Wang Qing-ji, Zheng Le-Min, and Jin Hao-Ran

Subjects
Physics, Zeeman effect, General Physics and Astronomy, Semiclassical physics, Transverse wave, Laser, Polarization (waves), law.invention, Light intensity, symbols.namesake, Transverse plane, law, Quantum electrodynamics, Quantum mechanics, symbols, Vector field
Abstract

We have studied the high-order nonlinear frequency-mixing effect in transverse Zeeman La-ser medium by using Lamb's semiclassical theory and vector field model, and obtained the analytical expressions of dielectrical polarization and light intensity. The results could explain the phenomena of high-order harmonic in σ-π light and σ, π light, and give the physical interpretation of beat wave deformation.

Published
1987
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7. THE THEORY OF NONLINEAR FREQUENCY MIXING EFFECT IN TRANSVERSE ZEEMAN He-Ne LASER

Author

Zheng Le-Min, Jin Hao-Ran, and Wang Qing-ji

Subjects
Physics, Zeeman effect, Degenerate energy levels, General Physics and Astronomy, Semiclassical physics, Laser, law.invention, Transverse plane, Nonlinear system, symbols.namesake, law, Distortion, Quantum mechanics, symbols, Vector field
Abstract

Based on the previous paper[1], in this work we consider the Maxwell's distribution of atomic velocities, study the near degenerate four-wave mixing effect in transverse Zeeman He-Ne laser by using the vector field model and Lamb's semiclassical theory. We give out the formulas of high-order nonlinear effect, explaine theoretically the physical reason of the beat frequency distortion, and have done the numerical calculation by using computer. The results show that the predictions of theory in this paper are in keeping with experimental results.

Published
1987
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