Invulnerability of the Urban Agglomeration Integrated Passenger Transport Network under Emergency Events.

Urgent natural environmental events, such as floods, power failures, and epidemics, result in disruptions to the traffic system and heavy disturbances in public requirements. In order to strengthen the ability of the transport network to handle urgent natural environmental issues, this paper simulates the disruption situation of traffic stations in the urban agglomeration by attacking nodes, and evaluates the ability of the transport network to resist disruptions (i.e., invulnerability). Firstly, the model of the urban agglomeration integrated passenger transport network is established based on complex network theory. The highway network, railway network, and coupling network are combined into a multi-layer network space structure, and the edge weight is calibrated by travel time and cost. Secondly, the invulnerability simulation process including multiple attack modes under random and deliberate attack strategies is sorted out. By improving the traditional network efficiency indicator, the network impedance efficiency indicator is proposed to measure network performance, and the network relative impedance efficiency indicator is used to evaluate network invulnerability and identify key nodes. Finally, Chengdu-Chongqing urban agglomeration is taken as a case study. The results show that the network does not collapse quickly and it shows certain invulnerability and robustness under continuous random attacks. Network performance and invulnerability are not necessarily positively correlated. The failure of individual nodes that are small in scale but act as transit hubs may significantly degrade the network performance. The identified key nodes have significance for guiding the construction, maintenance, and optimization of the urban agglomeration passenger transport network, which is conducive to promoting public safety.

[Phagocytic function of macrophage after partial splenectomy of rabbits using microwave tissue coagulation].

The immune function of spleen after partial splenectomy (PSM) of rabbits was stuided using microwave tissue coagulation (MTC). Streptococcus pneumoniae suspension was injected into the ear veins of rabbits 4 weeks after they were subjected to partial splenectomy using microwave tissue coagulation (PSM) group and to sham operation (SO groups), respectively. India ink was given via portal vein. Residual spleen were resected and microscopic examinations were performed on spleen slices stained using HE to compare phagocytic functions of macrophage. Gradings of phagocytic function in macrophage were of no significant difference between PSM and SO groups (P > 0.05). Weights of spleens showed no significant difference between the two groups (P > 0.05). The phagocytic function of macrophage after PSM can be preserved well. The result of this experiment implies that splenic salvage using MTC is a clinically applicable method.

Safety assessment of dangerous goods transport enterprise based on the relative entropy aggregation in group decision making model.

Safety of dangerous goods transport is directly related to the operation safety of dangerous goods transport enterprise. Aiming at the problem of the high accident rate and large harm in dangerous goods logistics transportation, this paper took the group decision making problem based on integration and coordination thought into a multiagent multiobjective group decision making problem; a secondary decision model was established and applied to the safety assessment of dangerous goods transport enterprise. First of all, we used dynamic multivalue background and entropy theory building the first level multiobjective decision model. Secondly, experts were to empower according to the principle of clustering analysis, and combining with the relative entropy theory to establish a secondary rally optimization model based on relative entropy in group decision making, and discuss the solution of the model. Then, after investigation and analysis, we establish the dangerous goods transport enterprise safety evaluation index system. Finally, case analysis to five dangerous goods transport enterprises in the Inner Mongolia Autonomous Region validates the feasibility and effectiveness of this model for dangerous goods transport enterprise recognition, which provides vital decision making basis for recognizing the dangerous goods transport enterprises.