The multi-phase particle swarm optimization (MPPSO) technique is applied to retrieve the particle size distribution (PSD) under dependent model. Based on the Mie theory and the Lambert-Beer theory, three PSDs, i.e...The multi-phase particle swarm optimization (MPPSO) technique is applied to retrieve the particle size distribution (PSD) under dependent model. Based on the Mie theory and the Lambert-Beer theory, three PSDs, i.e., the Rosin-Rammer (R-R) distribution, the normal distribution, and the logarithmic normal distribution, are estimated by MPPSO algorithm. The results confirm the potential of the proposed approach and show its effectiveness. It may provide a new technique to improve the accuracy and reliability of the PSD inverse calculation.展开更多
建筑室内空间LED照明过量的蓝光辐射会对视网膜造成损伤。建筑室内照明的辐射与环境反射光谱分布有关。为了得出建筑室内空间环境反射光谱的蓝光辐射强度,在7种不同照度下测量和计算了5 000 K LED光源的直射光谱和环境反射光谱。结果表...建筑室内空间LED照明过量的蓝光辐射会对视网膜造成损伤。建筑室内照明的辐射与环境反射光谱分布有关。为了得出建筑室内空间环境反射光谱的蓝光辐射强度,在7种不同照度下测量和计算了5 000 K LED光源的直射光谱和环境反射光谱。结果表明LED照明在建筑室内空间实际应用中,环境反射光谱的辐射强度只有光源直接辐射强度的20%,眼睛实际接收到的辐射强度远远低于蓝光辐射安全限值,不会造成视网膜损伤。对于主要发出蓝光的光源长时间高强度照明对视网膜仍可能存在潜在危害。展开更多
基金the National Natural Sci-ence Foundation of China (No.50576019)the Pro-gram for New Century Excellent Talents in University from the Ministry of Education of China.
文摘The multi-phase particle swarm optimization (MPPSO) technique is applied to retrieve the particle size distribution (PSD) under dependent model. Based on the Mie theory and the Lambert-Beer theory, three PSDs, i.e., the Rosin-Rammer (R-R) distribution, the normal distribution, and the logarithmic normal distribution, are estimated by MPPSO algorithm. The results confirm the potential of the proposed approach and show its effectiveness. It may provide a new technique to improve the accuracy and reliability of the PSD inverse calculation.
文摘建筑室内空间LED照明过量的蓝光辐射会对视网膜造成损伤。建筑室内照明的辐射与环境反射光谱分布有关。为了得出建筑室内空间环境反射光谱的蓝光辐射强度,在7种不同照度下测量和计算了5 000 K LED光源的直射光谱和环境反射光谱。结果表明LED照明在建筑室内空间实际应用中,环境反射光谱的辐射强度只有光源直接辐射强度的20%,眼睛实际接收到的辐射强度远远低于蓝光辐射安全限值,不会造成视网膜损伤。对于主要发出蓝光的光源长时间高强度照明对视网膜仍可能存在潜在危害。