Jiacheng Chang

ORCID: 0009-0001-2267-3981
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About
Contact & Profiles
Research Areas
  • Air Quality and Health Impacts
  • Atmospheric chemistry and aerosols
  • Atmospheric aerosols and clouds
  • Industrial Vision Systems and Defect Detection
  • Handwritten Text Recognition Techniques
  • Air Quality Monitoring and Forecasting
  • Vehicle emissions and performance
  • Geophysical Methods and Applications
  • Robotics and Sensor-Based Localization
  • Speech Recognition and Synthesis
  • 3D Shape Modeling and Analysis
  • Advanced Image and Video Retrieval Techniques

Harbin Engineering University
2023

Beijing University of Technology
2022

Nanjing University of Information Science and Technology
2019-2021

China Meteorological Administration
2019-2020

Abstract. The regional transport of air pollutants, controlled by emission sources and meteorological factors, results in a complex source–receptor relationship pollution change. Wuhan, metropolis the Yangtze River middle basin (YRMB) central China, experienced heavy characterized hourly PM2.5 concentrations reaching 471.1 µg m−3 January 2016. To investigate over eastern China (CEC) impact on wintertime YRMB area, observed other relevant environmental data from 2016 were analyzed. Our...

10.5194/acp-20-7217-2020 article EN cc-by Atmospheric chemistry and physics 2020-06-23

Abstract Unsupervised 2D image-based 3D model retrieval aims at retrieving images from the gallery of models by given images. Despite encouraging progress made in this task, there are still two significant limitations: (1) feature alignment and is difficult due to huge gap between modalities. (2) The important view information was ignored prior arts, which led inaccurate results. To alleviate these limitations, inspired success vision transformers (ViT) a great variety tasks, paper, we...

10.1007/s00530-023-01166-y article EN cc-by Multimedia Systems 2023-08-24

To understand the recent characteristics of atmospheric environmental changes in Twain-Hu(Hunan-Hubei) Basin, including middle reaches Yangtze River, this paper uses near-surface PM2.5 and PM10 observational data for Twain-Hu Basin winters 2015 to 2019, combined with wind-speed, topography, normalized difference vegetation index(NDVI), other datasets. The results show that:① pollution occurred frequently 2015-2019 Xiangyang Jingmen western part basin, experience on an average 62 61 days...

10.13227/j.hjkx.202103050 article EN Huan jing ke xue= Huanjing kexue 2021-10-08

Regional transport of air pollutants controlled by both emission sources and meteorological factors results in a complex source-receptor relationship pollution change.Wuhan, metropolismetropolitan area the Yangtze River Middle Basin (YRMB) central China experienced heavy characterized excessive PM2.5 concentrations reaching 471.1 μg m -3 January 2016.In order to investigate regional over impact on wintertime YRMB area, observational other relevant environmental data from 2016 were...

10.5194/acp-2019-758-supplement preprint EN 2019-11-27

Abstract. Regional transport of air pollutants controlled by both emission sources and meteorological factors results in a complex source-receptor relationship pollution change. Wuhan, metropolis the Yangtze River Middle Basin (YRMB) central China experienced heavy characterized excessive PM2.5 concentrations reaching 471.1 μg m−3 January 2016. In order to investigate regional over impact on wintertime YRMB area, observational other relevant environmental data from 2016 were analyzed. Our...

10.5194/acp-2019-758 preprint EN cc-by 2019-11-27

With the continuous development of social informatization, thermal label and barcode printing technology has gradually spread across all walks life. It is also important to improve recognizability barcodes. Improving clarity at high speeds become a key point in design printers. increase speed traditional heating control method, time for temperature rise fall element print hair will not be negligible, which neglect impact clarity, result reduction clarity. However, it difficult costly start...

10.1117/12.2628552 article EN 2022-02-16

Aiming at the problem of insufficient feature learning time-delay neural networks, which is widely used in field language identification, a new architecture called multi-scale and multi-dimensional convolution proposed. The structure includes global inter-frame correlation network, local channel multi-head attention statistics pooling layer. network models context initial frame layer to obtain dependency characteristics context, makes up for natural deficiency based on limited context;...

10.1117/12.2652306 article EN International Conference on Mechanisms and Robotics (ICMAR 2022) 2022-11-10
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