Jingyi Wang
Deparment: Xi'an Jiaotong-Liverpool University

Items: 2

Views: 86

1. All-in-one metal-oxide heterojunction artificial synapses for visual sensory and neuromorphic computing systems

Author:Liu,Qihan;Yin,Li;Zhao,Chun;Wu,Ziang;Wang,Jingyi;Yu,Xiaoran;Wang,Zixin;Wei,Wenxi;Liu,Yina;Mitrovic,Ivona Z.;Yang,Li;Lim,Eng Gee;Zhao,Ce Zhou

Source:Nano Energy,2022,Vol.97

Abstract:An all-in-one artificial synapse integrating central nervous and sensory nervous functions utilizing low-dimensional metal-oxide heterojunction is demonstrated in this work. With an ion-electrolyte gate, synaptic emulations modulated by electrical and photonic stimulus have been integrated into one high-performance three-terminal artificial synapse. Various long-term and short-term synaptic plasticity functions have been achieved by altering the electrolyte-gate stimulus amplitude/width/frequency/number. The emulated synaptic plasticity and maintained synaptic weight states enable artificial synapses for neuromorphic computing. Simulated artificial neural network based on the artificial synapses achieved Covid-19 chest image recognition (>85%%). The photo-sensitive metal-oxide heterojunction enables the synaptic functions mimicking the biological visual sensory functions responding to optical and UV stimulus. Photonic synaptic plasticity modulations responding to photonic stimulus wavelength/power/width/number are investigated, and short-term/long-term synaptic plasticity transition was achieved. Dual-mode synaptic modulation combining photonic stimulus and gate stimulus was examined. Finally, an artificial neural network was demonstrated based on the synapses with dual-mode synaptic weight modulation, indicating the potential of the artificial synapse for compact artificial intelligence systems combing neuromorphic computing and visual sensory nervous functions.
2. How digitalization affects the effectiveness of turnaround actions for firms in decline


Source:Long Range Planning,2021,Vol.

Abstract:We investigate how digitalization influences the effectiveness of retrenchment and strategic actions on firms’ turnaround outcomes after a situation of firm decline. To ensure turnaround actions are effective, declining firms must possess relevant knowledge about how to implement such action. We argue that through digitalization, firms can form a close relationship with key stakeholders in their business ecosystem, which can provide important knowledge to guiding their response actions. More specifically, we argue that different types of digitalization linking firms to different groups of stakeholders allows firms to access knowledge about different types of response actions. Based on a sample of publicly listed small and medium-sized enterprises (SMEs) in China from 2012 to 2019, we find that the internal digitalization has a positive moderating effect on the relationship between asset and cost retrenchments and turnaround performance, and that the external digitalization has a positive moderating effect on the relationship between new product introduction and turnaround performance.
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