Qixing Zhang
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View article: WishGI: Lightweight Static Global Illumination Baking via Spherical Harmonics Fitting
WishGI: Lightweight Static Global Illumination Baking via Spherical Harmonics Fitting Open
Global illumination combines direct and indirect lighting to create realistic lighting effects, bringing virtual scenes closer to reality. Static global illumination is a crucial component of virtual scene rendering, leveraging precomputat…
View article: Fractional Spike Differential Equations Neural Network with Efficient Adjoint Parameters Training
Fractional Spike Differential Equations Neural Network with Efficient Adjoint Parameters Training Open
Spiking Neural Networks (SNNs) draw inspiration from biological neurons to create realistic models for brain-like computation, demonstrating effectiveness in processing temporal information with energy efficiency and biological realism. Mo…
View article: WishGI: Lightweight Static Global Illumination Baking via Spherical Harmonics Fitting
WishGI: Lightweight Static Global Illumination Baking via Spherical Harmonics Fitting Open
Global illumination combines direct and indirect lighting to create realistic lighting effects, bringing virtual scenes closer to reality. Static global illumination is a crucial component of virtual scene rendering, leveraging precomputat…
View article: Both non-uniform mixing sates and coating structures are important for absorption enhancement and radiative effect of black carbon
Both non-uniform mixing sates and coating structures are important for absorption enhancement and radiative effect of black carbon Open
Black carbon absorption is a major contributor to global warming, with considerable uncertainty due to complex microscopic properties. Previous studies have mainly attributed the complex absorption enhancement (Eabs) to the non-…
View article: Refining Adaptive Zeroth-Order Optimization at Ease
Refining Adaptive Zeroth-Order Optimization at Ease Open
Recently, zeroth-order (ZO) optimization plays an essential role in scenarios where gradient information is inaccessible or unaffordable, such as black-box systems and resource-constrained environments. While existing adaptive methods such…
View article: Wildfire Smoke Detection System: Model Architecture, Training Mechanism, and Dataset
Wildfire Smoke Detection System: Model Architecture, Training Mechanism, and Dataset Open
Vanilla Transformers focus on semantic relevance between mid‐ to high‐level features and are not good at extracting smoke features, as they overlook subtle changes in low‐level features like color, transparency, and texture, which are esse…
View article: Sulfur isotope anomalies in coal combustion: Applications to the present and early Earth environments
Sulfur isotope anomalies in coal combustion: Applications to the present and early Earth environments Open
The observation of mass-independent sulfur isotope fractionations (S-MIF) in Archean–Paleoproterozoic rocks has been instrumental in constraining oxygen levels on early Earth. The S-MIF effect, experimentally demonstrated to result from ph…
View article: Enhancing wildfire detection: a novel algorithm for controllable generation of wildfire smoke images
Enhancing wildfire detection: a novel algorithm for controllable generation of wildfire smoke images Open
Background The lack of wildfire smoke image data is one of the most important factors hindering the development of image-based wildfire detection. Smoke image generation based on image inpainting techniques is a solution worthy of study. H…
View article: Dynamic correction of forest fire spread prediction using observation error covariance matrix estimation technique based on FLC-GRU
Dynamic correction of forest fire spread prediction using observation error covariance matrix estimation technique based on FLC-GRU Open
Background Data assimilation (DA) techniques have played a significant role in improving the prediction accuracy of forest fire spread. The dynamic correction technique weights the predicted and observed values to obtain an analytical valu…
View article: Intelligent non-invasive elderly fall monitoring by designing software defined radio frequency sensing system
Intelligent non-invasive elderly fall monitoring by designing software defined radio frequency sensing system Open
The global increase in life expectancy poses challenges related to the safety and well-being of the elderly population, especially in relation to falls. While falls can lead to significant cognitive impairments, timely intervention can mit…
View article: Photochemical evolution of the molecular composition of dissolved organic carbon and dissolved brown carbon from wood smoldering
Photochemical evolution of the molecular composition of dissolved organic carbon and dissolved brown carbon from wood smoldering Open
Recently, extreme wildfires occur frequently around the world and emit substantial brown carbon (BrC) into the atmosphere, whereas the molecular compositions and photochemical evolution of BrC remain poorly understood. In this work, primar…
View article: Dynamic Correction of Forest Fire Spread Prediction using Observation Error Covariance Matrix Estimation Technique based on FLC-GRU
Dynamic Correction of Forest Fire Spread Prediction using Observation Error Covariance Matrix Estimation Technique based on FLC-GRU Open
Background Data assimilation (DA) techniques have played a significant role in improving the prediction accuracy of forest fire spread. This dynamic correction technique enhances the analytical values that better reflect the fire situation…
View article: Size-resolved Natural Decay of Environmental Tobacco Smoke Particles in the Unventilated Meeting Room
Size-resolved Natural Decay of Environmental Tobacco Smoke Particles in the Unventilated Meeting Room Open
Particle number concentration (PNC) and particle size distribution (PSD) are two important parameters to access exposure risk of environmental tobacco smoke (ETS) in the unventilated or weakly ventilated meeting room. To investigate the na…
View article: Photochemical Evolution of the Molecular Composition of Organic Aerosol and Brown Carbon from Wood Smoldering
Photochemical Evolution of the Molecular Composition of Organic Aerosol and Brown Carbon from Wood Smoldering Open
View article: Wildfire Smoke Detection System: Model Architecture, Training Mechanism, and Dataset
Wildfire Smoke Detection System: Model Architecture, Training Mechanism, and Dataset Open
Vanilla Transformers focus on semantic relevance between mid- to high-level features and are not good at extracting smoke features as they overlook subtle changes in low-level features like color, transparency, and texture which are essent…
View article: Fully Synthetic Videos and the Random-Background-Pasting Method for Flame Segmentation
Fully Synthetic Videos and the Random-Background-Pasting Method for Flame Segmentation Open
Video-based flame detection (VFD) aims to recognize fire events by using image features. Flame segmentation is an essential task in VFD, providing suspected regions for feature analysis and object recognition. However, the lack of positive…
View article: Comment on acp-2022-633
Comment on acp-2022-633 Open
Most global aerosol models approximate dust as spherical particles, whereas most remote sensing retrieval algorithms approximate dust as spheroidal particles with a shape distribution that conflicts with measurements. These inconsistent an…
View article: Regional impacts of black carbon morphologies on shortwave aerosol–radiation interactions: a comparative study between the US and China
Regional impacts of black carbon morphologies on shortwave aerosol–radiation interactions: a comparative study between the US and China Open
Black carbon (BC) is one of the dominant absorbing aerosol species in the atmosphere. It normally has complex fractal-like structures due to the aggregation process during combustion. A wide range of aerosol–radiation interactions (ARIs) o…
View article: Reply on RC1
Reply on RC1 Open
Abstract. Black carbon (BC) is one of the dominant absorbing aerosol species in the atmosphere. It normally has complex fractal-like structures due to the aggregation process during combustion. A wide range of aerosol–radi…
View article: Reply on RC2
Reply on RC2 Open
Abstract. Black carbon (BC) is one of the dominant absorbing aerosol species in the atmosphere. It normally has complex fractal-like structures due to the aggregation process during combustion. A wide range of aerosolâra…
View article: Early Smoke Detection Based on Improved YOLO-PCA Network
Early Smoke Detection Based on Improved YOLO-PCA Network Open
Early detection of smoke having indistinguishable pixel intensities in digital images is a difficult task. To better maintain fire surveillance, early smoke detection is crucial. To solve the problem, we have integrated the principal compo…
View article: Multi-Scale Video Flame Detection for Early Fire Warning Based on Deep Learning
Multi-Scale Video Flame Detection for Early Fire Warning Based on Deep Learning Open
The widespread use of renewable energy resources requires more immediate and effective fire alarms as a preventive measure. The fire is usually weak in the initial stages, which is not conducive to detection and identification. This paper …
View article: Smoke Injection Heights from Forest and Grassland Fires in Southwest China Observed by CALIPSO
Smoke Injection Heights from Forest and Grassland Fires in Southwest China Observed by CALIPSO Open
Smoke injection height (SIH) determines the distance and direction of smoke transport, thus impacting the atmospheric environment. In this study, we used Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations data coupled with …
View article: Comment on acp-2021-1090
Comment on acp-2021-1090 Open
Black carbon (BC) is one of the dominant absorbing aerosol species in the atmosphere. It normally has complex fractal-like structures due to the aggregation process during combustion. A wide range of aerosol-radiation interactions (ARI) of…
View article: Regional impacts of black carbon morphologies on aerosol-radiation interactions: A comparative study between the US and China
Regional impacts of black carbon morphologies on aerosol-radiation interactions: A comparative study between the US and China Open
Black carbon (BC) is one of the dominant absorbing aerosol species in the atmosphere. It normally has complex fractal-like structures due to the aggregation process during combustion. A wide range of aerosol-radiation interactions (ARI) of…
View article: Supplementary material to "Regional impacts of black carbon morphologies on aerosol-radiation interactions: A comparative study between the US and China"
Supplementary material to "Regional impacts of black carbon morphologies on aerosol-radiation interactions: A comparative study between the US and China" Open
View article: Effect of Photooxidation on Size Distribution, Light Absorption, and Molecular Compositions of Smoke Particles from Rice Straw Combustion
Effect of Photooxidation on Size Distribution, Light Absorption, and Molecular Compositions of Smoke Particles from Rice Straw Combustion Open
View article: Video Smoke Detection Based on Motion Analysis and Fused Temporal-Spatial Model
Video Smoke Detection Based on Motion Analysis and Fused Temporal-Spatial Model Open
View article: Fully Synthetic Videos and Random Background-Pasting Method for Flame Segmentation
Fully Synthetic Videos and Random Background-Pasting Method for Flame Segmentation Open
View article: Effects of black carbon morphology on brown carbon absorption estimation: from numerical aspects
Effects of black carbon morphology on brown carbon absorption estimation: from numerical aspects Open
In this work, we developed a numerical method to investigate the effects of black carbon (BC) morphology on the estimation of brown carbon (BrC) absorption using the absorption Ångström exponent (AAE) methods. Pseudo measurements of the to…