A5024829301- Atmospheric aerosols and clouds
- Air Quality Monitoring and Forecasting
- Fire Detection and Safety Systems
- Atmospheric chemistry and aerosols
- Fire effects on ecosystems
- Video Surveillance and Tracking Methods
- Network Packet Processing and Optimization
- Network Traffic and Congestion Control
- Fire dynamics and safety research
- Electron Spin Resonance Studies
- Evacuation and Crowd Dynamics
- Analytical Chemistry and Sensors
- Air Quality and Health Impacts
- Atmospheric and Environmental Gas Dynamics
- Automated Road and Building Extraction
- Urban Heat Island Mitigation
- Interconnection Networks and Systems
- Vehicle emissions and performance
- Network Security and Intrusion Detection
- Cardiac electrophysiology and arrhythmias
- Remote-Sensing Image Classification
- Radiative Heat Transfer Studies
- Advanced Combustion Engine Technologies
Huazhong University of Science and Technology
2005-2024
Aerosol plays an important role in a broad range of scientific disciplines, such as atmospheric chemistry and physics, fuel combustion, human health. Current particle sizing instruments are usually bulky, complicated, expensive, while the portable ones cannot provide sufficient measurement channels to describe size distribution accurately. To address this challenge, we propose optical sensing method analyze aerosols based on light scattering intensity field (LSIF). The LSIF is set lights all...
Due to its wide monitoring range and low cost, visual-based fire detection technology is commonly used for in open spaces. However, traditional algorithms have limitations terms of accuracy speed, making it challenging detect fires real time. These poor anti-interference ability against fire-like objects, such as emissions from factory chimneys, clouds, etc. In this study, we developed a approach based on an improved YOLOv5 algorithm dataset with objects. We added three Convolutional Block...
Optical fire smoke detectors trigger the alarms when scattering light intensity exceeds a preset threshold. Current optical usually takes long time or even fail to alarm for black due strong absorption and weak efficiency. A sensor with dual polarized channels is proposed adjust response sensitivities both white smoke. The can be discriminated by polarization degree, thus sensitivity adjusted correction factor. prototype set up tested monodisperse aerosols maximum error of 10.1%. According...
Stationary source emissions of key industries, such as thermal power plants, have become the central consideration in environmental protection programs. Existing photoelectric sensors at stationary sources usually use a single wavelength laser to measure total mass concentration particulate matter, bearing inherent errors due changing particle size distribution (PSD). However, cannot comprehensively estimate air pollution caused by sources. Therefore, it is required both and PSD aerosols...
Building extraction from satellite images has been a hot research topic in the field of remote-sensing image analysis. Most related studies are focusing on urban areas with dense populations, while solutions for underpopulated mountainous still missing. Given scarcity materials, it is an important applications like mountain hazard damage management. To fill this gap, we present new dataset scattered area building segmentation, consisting manual labels and coordinates latitude longitude 2125...
Current optical fire smoke detectors use scattering light intensity as an indicator of concentration and trigger alarms when the exceeds a threshold value. However, such are prone to false caused by non-fire aerosols since both smokes scatter light. Thus, in order reduce dust water vapor, must be capable distinguishing from aerosols. Since signals depend on particle size information aerosols, it is essential study characterize distribution for differentiating them. In this paper,...
Mass concentration is a commonly used but insufficient metric to evaluate the particulate matter (PM) exposure hazard. Recent studies have declared that small particles more serious impacts on human health than big given same mass concentration. However, state-of-the-art PM sensors cannot provide explicit information of particle size for further analysis. In this work, we adopt Sauter mean diameter (SMD) as key reflect besides To measure SMD, an effective optical sensing method and...
The severe doxorubicin (DOXO) side effect of cardiomyopathy limits it clinical application as an effective anticancer drug. Although Ca2+ overload was postulated one the mechanisms for this toxicity, its role was, however, disputable in terms contractile dysfunction. In work, dynamics intracellular signal were optically mapped a Langendorff guinea pig heart. We found that DOXO treatment: (1) Delayed activation signal. With reference time set at peak action potential (AP), lag between and AP...
Particulate matter has adverse effects on the environment and human health, thus emission monitoring of particulate is essential for health protection. Optical methods are popular on-line due to their low cost, high sensitivity easy maintainability. However, measurement accuracy susceptible particle size distribution matter. To resolve this problem, a new optical method using multi-channel scattering signals proof-of-concept prototype sensor proposed in paper. According signals, which...
A demand feature of the Universal Mobile Telecommunications System (UMTS) is to support different levels quality service (QoS) as required by subscribers and their applications. To provide QoS, UMTS backbone network needs an efficient QoS mechanism a hardware platform demanded level services on core network. Network processors are emerging programmable alternative traditional ASIC-based solutions in scaling up data plane processing services. This paper presents methodology differentiated...
The 3G network security was a problem in the practice. particularity of core determined that new firewall technology must be adopt order to protect network. development processor (NP) offered high-performance realization platform for firewall. On basis analyzing shelter method attack each interface network, scheme design put forward. It on hardware platform. How use IPSEC protocol GPRS tunnel (GTP) and implement NP discussed detail. aggregated bit vector algorithm applied packet...