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Diffusion Equation on Fractals:Three-Dimensional Case

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Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 3-5页

作者： Qiuhua ZENG and houqiang li(Department of Physics, Sichuan University, ChengDu 610064, China) Department of Physics Sichuan University ChengDu 610064 China

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic... 详细信息

IntroductionInrecentyearsthephenomenonofunusualtrajnsport-prop***onindisorderedmediaorfractalmedia,anomalousdiffusionistheoretic...

关键词： comb model probability density diffusion on fractals

A Study of Debris Flow Block on the Model ofPercolation

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Communications in Nonlinear Science and Numerical Simulation 1999年第3期4卷 3-5页

作者： Yaquan FANG houqiang li Nanshan AI and Wenfeng LUO(Department of Physics, Sichuan University, Chengdu 610064, ChinaE-mail: yaquan@***) Department of Physics Sichuan University Chengdu 610064 China

IlltroductionDebrisflow,oneoftheimportantnaturalphenomenathatcausesalotofdisastersinmanyregionsofChinahasbenstudiedalotaboutitscause,structure,composition,harmprevefitionandmanagemellt['--'***... 详细信息

IlltroductionDebrisflow,oneoftheimportantnaturalphenomenathatcausesalotofdisastersinmanyregionsofChinahasbenstudiedalotaboutitscause,structure,composition,harmprevefitionandmanagemellt['--'***...

关键词： percolation renormalization debris flow self-similar

Anomalous Fractional Diffusion Equation forTransport Phenomena

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Communications in Nonlinear Science and Numerical Simulation 1999年第2期4卷 99-104页

作者： Qiuhua ZENG houqiang li De liU(Department of Physics, Sichuan University, ChengDu 610064, China) Department of Physics Sichuan University ChengDu 610064 China

We derive the standard diffusion equation from the continuity equationand by discussing the defectiveness of earlier proposed equations, we get the generalizedfractional diffusion equation for anomalous diffusion.

关键词： fractal lattice probability density fractal anomalous diffusion

Nonlinear Analysis on Vertical Distribution of Suspended Load

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Communications in Nonlinear Science and Numerical Simulation 1998年第2期3卷 19-23页

作者： Fuquan WANG, houqiang li and Jing DING (Sichuan Union University,Chengdu,610064,China) Sichuan Union University Chengdu 610064 China

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｔｕｄｉｅｓｏｎｖｅｒｔｉｃａｌｄｉｓｔｒｉｂｕｔｉｏｎｏｆｓｅｄｉｍｅｎｔｉｎｎａｔｕｒａｌｒｉｖｅｒｓｈａｖｅｉｍｐｏｒｔａｎｔｔｈｅｏｒｅｔｉｃａｌｍｅａｎｉｎｇｓａｎｄｅｎｇ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｔｕｄｉｅｓｏｎｖｅｒｔｉｃａｌｄｉｓｔｒｉｂｕｔｉｏｎｏｆｓｅｄｉｍｅｎｔｉｎｎａｔｕｒａｌｒｉｖｅｒｓｈａｖｅｉｍｐｏｒｔａｎｔｔｈｅｏｒｅｔｉｃａｌｍｅａｎｉｎｇｓａｎｄｅｎｇｉｎｅｒｉｎｇａｐｐｌｉｃａｔｉｏ...

关键词： turbulence fractal sediment vertical distribution

DocPedia: unleashing the power of large multimodal model in the frequency domain for versatile document understanding

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Science China(Information Sciences) 2024年第12期67卷 65-78页

作者： Hao FENG Qi liU Hao liU Jingqun TANG Wengang ZHOU houqiang li Can HUANG Department of Electronic Engineering and Information Science University of Science and Technology of China ByteDance Inc.

In this work, we present DocPedia, a novel large multimodal model(LMM) for versatile OCRfree document understanding, capable of parsing images up to 2560 × 2560 resolution. Unlike existing studies that either struggle with high-resolution documents or give up the large language model thus vision or language ability constrained, our DocPedia directly processes visual input in the frequency domain rather than the pixel space. The unique characteristic enables DocPedia to capture a greater amount of visual and textual information using a limited number of visual tokens. To consistently enhance both the perception and comprehension abilities of our DocPedia, we develop a dual-stage training strategy and enrich instructions/annotations of all training tasks covering multiple document types. Extensive quantitative and qualitative experiments are conducted on various publicly available benchmarks and the results confirm the mutual benefits of jointly learning perception and comprehension tasks. The results provide further evidence of the effectiveness and superior performance of our DocPedia over other methods.

关键词： document understanding large multimodal model OCR-free high-resolution frequency

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Fractional Transport Equation on Random Fractals

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Communications in Nonlinear Science and Numerical Simulation 1998年第4期3卷 267-270页

作者： Qiuhua ZENG houqiang li and Yaquan FANG (Department of Physics, Sichuan Union University, Chengdu 610064, China) Department of Physics Sichuan Union University Chengdu 610064 China

According to the ways of *** and *** with the constitutive equation of diffusive particles in isotropic and homogeneous three dimensions and the Laplace transform we derive the multiscaling fractional transport equati... 详细信息

关键词： probability density comb model transport on fractals

Multi-Agent Hierarchical Graph Attention Reinforcement Learning for Grid-Aware Energy Management

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ZTE Communications 2023年第3期21卷 11-21页

作者： FENG Bingyi FENG Mingxiao WANG Minrui ZHOU Wengang li houqiang University of Science and Technology of China Hefei 230026China

The increasing adoption of renewable energy has posed challenges for voltage regulation in power distribution *** energy management,which includes the control of smart inverters and energy management systems,is a trending way to mitigate this ***,existing multi-agent reinforcement learning methods for grid-aware energy management have not sufficiently considered the importance of agent cooperation and the unique characteristics of the grid,which leads to limited *** this study,we propose a new approach named multi-agent hierarchical graph attention reinforcement learning framework(MAHGA)to stabilize the ***,under the paradigm of centralized training and decentralized execution,we model the power distribution network as a novel hierarchical graph containing the agent-level topology and the bus-level *** a hierarchical graph attention model is devised to capture the complex correlation between ***,we incorporate graph contrastive learning as an auxiliary task in the reinforcement learning process to improve representation learning from *** on several real-world scenarios reveal that our approach achieves the best performance and can reduce the number of voltage violations remarkably.

关键词： demand-side management graph neural networks multi-agent reinforcement learning voltage regulation

The Book of Poetry as the World’s First Research Report

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Contemporary Social Sciences 2022年第1期7卷 111-133页

作者： li houqiang Lu Jiaqiang Sichuan Academy of Social Sciences ChengduSichuan

The collection of folk songs and odes for the Book of Poetry(Shih-ching/Shijing) was in nature a social research project in ancient *** paper studies the Book of Poetry as a research report,probing into the background of the assignment of poetry functionaries as researchers,relevant geographic information and time span,relevant social production and life,the logic of the research,and the social value of the *** a social research report,the Book of Poetry is of documentary significance to various academic fields.

关键词： the Book of Poetry research report social research

Dancing Ping-Pong Promotes Global Collaboration——At the Sports Economy and International Regional Cooperation Forum for the Belt and Road Initiative in 2018

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Contemporary Social Sciences 2018年第5期3卷 1-8页

作者： li houqiang Chen Youbin Sichuan Academy of Social Sciences

Sichuan is the strongest province in western China, and Chengdu is the first stop of the Silk Road and the Yangtze River Economic Zone. Qingbaijiang,the inception point of the Chengdu-Europe express railway, is an important source of artifacts from the ancient Sichuan civilization, and Sichuan province, the land of abundance, is the cradle and base of ping-pong. Chengdu has been connected to

关键词： In At the Sports Economy and International Regional Cooperation Forum for the Belt and Road Initiative in 2018 Dancing Ping-Pong Promotes Global Collaboration