Qian Chen

Publications : 121
Aldex : 10
H-index : 8
Citations : 381


PRISM: Pre-trained Indeterminate Speaker Representation Model for Speaker Diarization and Speaker Verification

Siqi Zheng, Qian Chen et 2 al.

May 16, 2022 in Arxiv
Speaker embedding has been a fundamental feature for speaker-related tasks such as verification, clustering, and diarization. Traditionally, speaker embeddings are represented as fixed vectors in high-dimensional space. This could lead to biased estimations, especially when handling shorter utterances. In this paper we propose to represent a speaker utterance as "floating" vector whose state is in...

Fast optical refocusing through multimode fiber bend using Cake-Cutting Hadamard encoding algorithm to improve robustness

Chuncheng Zhang, Xiubao Sui et 7 al.

Jul 27, 2022 in Arxiv
Multimode fibres offer the advantages of high resolution and miniaturization over single mode fibers in the field of optical imaging. However, multimode fibre's imaging is susceptible to perturbations of MMF that can lead to secondary spatial distortions in the transmitted image. Perturbations include random disturbances in the fiber as well as environmental noise. Here, we exploit the fast focusi...

IJFS, Vol. 10, Pages 97: Market Reaction to Local Attention around Earnings Announcements in China: Evidence from Internet Search Activity

Qian Chen, Zhouling Xu et 3 al.

Oct 13, 2022 in International Journal of Financial Studies
IJFS, Vol. 10, Pages 97: Market Reaction to Local Attention around Earnings Announcements in China: Evidence from Internet Search Activity International Journal of Financial Studies doi: 10.3390/ijfs10040097 Authors: Qian Chen Xiang Gao Jianming Mo Zhouling Xu The existing literature shows that, due to locality and familiarity, spatial investor-firm adjacency plays a key role in determining stock ...

Recent developments in evaluation methods and characteristics of comfort environment in underground subway

Weichao Yan, Xin Cui et 6 al.

Oct 17, 2022 in Frontiers in Built Environment
In recent years, due to the rapid progress of urbanization, the subway system with the advantages of large transport capacity, punctuality, efficiency, convenience and safety has become one of the main transportation modes in metropolitan areas. With the increase in passenger flow, the comfort of subway passengers has attracted extensive attention from the academic community. In this paper, we beg...

biology

NOD2‐mediated HDAC6/NF‐κb signalling pathway regulates ferroptosis induced by extracellular histone H3 in acute liver failure

Qian Chen, Zuojiong Gong et 6 al.

Oct 12, 2022 in Journal of Cellular and Molecular Medicine
Acute liver failure (ALF) is life‐threatening and often associated with high mortality rates. The aim of the present study was to investigate whether extracellular histone H3 could induce ferroptosis in hepatic macrophages in ALF and explore its potential mechanism. RAW264.7 macrophages and C57BL/6 mice were used in this study. LPS, D‐galactosamine (D‐Gal), histone H3, histone H3 antibody, NOD2 a...

biology

Manganese enhances DNA or RNA mediated innate immune response by inducing phosphorylation of TANK binding kinase 1

Hongyan Sui et 5 al.

Oct 12, 2022 in iScience
Trace metals are essential for various physiological processes, but their roles in innate immunity have not been fully explored. Here, we found that manganese (Mn) significantly enhanced DNA mediated IFN α, IFN β, and IFN λ1 production. Microarray analysis demonstrated Mn highly upregulated 351 genes, which were involved in multiple biological functions related to innate immune response. Moreover,...


Laser processing of KBr‐modified SnO2 for efficient rigid and flexible ambient‐processed perovskite solar cells

Hongbo Mo, Zhu Liu et 11 al.

Oct 6, 2022 in Solar RRL
A combination of KBr modification and laser processing is utilized to prepare SnO2 films for rigid and flexible PSCs. The KBr modification effectively passivated the defects at the interface between SnO2 and perovskite as well as grain boundaries of the perovskite film. A power conversion efficiency (PCE) of 20.14% was achieved with the KBr‐modified SnO2 for the rigid PSCs fabricated under a relat...

physics

Robust frame reduced structured illumination microscopy with accelerated correlation enabled parameter estimation

Jiaming Qian, Chao Zuo et 6 al.

Oct 10, 2022 in Applied Physics Letters
Applied Physics Letters, Volume 121, Issue 15, October 2022. Structured illumination microscopy (SIM), with the advantages of full field imaging and low photo damage, is one of the most well established fluorescence super resolution microscopy techniques that raised great interest in biological sciences. However, conventional SIM techniques generally require at least nine images for image reconstr...

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