5G边缘计算商用部署和运维关键技术

由于部署地点和应用场景的差异,边缘计算系统存在一体化和云化两种部署模式,导致系统架构、关键技术要求以及运维方式也各不相同.首先分析了两种模式下的应用场景、特征及对系统的需求,其次,从硬件、云化基础设施平台、边缘PaaS平台、安全以及运维等方面对两种模式做了深入分析,最后在上述分析基础上,从商用角度明确了边缘计算在两种部...     

Toxicity of Bioactive Molecule Andrographolide against Spodoptera litura Fab and Its Binding Potential with Detoxifying Enzyme Cytochrome P450

Spodoptera litura Fab. is a polyphagous pest causing damage to many agriculture crops leading to yield loss. Recurrent usage of synthetic pesticides to control this pest has resulted in resistance development. Plant-derived diterpenoid compound andrographolide was isolated from the leaves of Andrographis paniculata. It was analysed by gas chromatography-mass spectroscopy and quantified by HPLC. Nutritional indices and digestive enzymatic profile were evaluated. Third, fourth and fifth instar larvae were treated with different concentrations of andrographolide. At 3, 6 and 9 ppm-treated concentrations the larvae showed decreased RGR, RCR, ECI, ECD values with adverse increase in AD. The digestive enzymes were significantly inhibited when compared with control. Conspicuously, andrographolide showed pronounced mortality of S. litura by inhibition of enzyme secretion and intake of food. The binding ability of andrographolide with CYTP450 showed high affinity with low binding energy. Andrographolide has the potential to be exploited as a biocontrol agent against S. litura as an eco-friendly pesticide.     

基于信息熵的电力通信网脆弱性评价方法

电力通信网是智能电网的重要支撑网络,针对如何对其脆弱性进行综合、有效评价的问题,该文提出一种基于信息熵的电力通信网脆弱性跨层综合评价方法。首先给出了一种业务重要度计算方法,并将业务重要度作为网络参数,在业务层建立网络模型,定义边业务重要度(EBI)作为边在业务层的重要性指标;然后综合考虑网络的业务层、传输层和物理层,定义了边跨层重要度(ECI),进而将边跨层重要度的全网信息熵-边跨层信息熵(ECE)作为电力通信网脆弱性的评价指标;最后,以某实际电力通信网络为仿真背景,在不同路由策略下,通过对比网络脆弱性曲线和信息熵值的变化,证明了该方法对电力通信网脆弱性评价的有效性。该方法不仅限于电力通信网,还可推广至其它非一致性业务的承载网络。