Research on Data Routing Model Based on Ant Colony Algorithms

Improved traditional ant colony algorithms,a data routing model used to the data remote exchange on WAN was presented.In the model,random heuristic factors were introduced to realize multi-path search.The updating model of pheromone could adjust the pheromone concentration on the optimal path according to path load dynamically to make the system keep load balance.The simulation results show that the improved model has a higher performance on convergence and load balance.     

黔中地区1971—2020年作物气候生产潜力变化特征

为了研究黔中地区作物气候生产潜力变化规律,选取贵阳市8个气象站1971—2020年温度、降水气象资料,应用Thornthwaite模型和Miami模型来计算贵阳地区作物气候生产潜力状况以及变化趋势。结果表明：贵阳市作物气候生产潜力的曲线的周期为“增-减-增-减-增”,目前位于增加趋势中;同时有由东北向西南增加的空间变化趋势,降水因素是作物气候生产潜力的主要限制因子,作物生产利用率为30%,说明作物气候生产还存在较大的挖掘潜力。