Liver injury is one of the most fatal injuries in traffic accidents. To deeply study response characters of this injury under the unique impact condition, three impact tests are conducted based on the human body model and constraint systems of a car. This study is conducted based on the numerical method and adopts the orthogonal experimental design to deeply investigate the relationship between biomechanical responses and the impact loading variables. Data were collected and analyzed with the rotation of the liver in three planes and the distance change relative to the spine. Results show that in the near-side oblique impact, the maximum stress of the liver is captured as 10.041 MPa. In addition, the rotation angle of the liver in the three planes is the largest in the far-side oblique collision. In general, a more significant influence on the compression and movement of the liver is obtained from the near-side side collision, mainly because the door directly hits the left side of the occupant during crash process due to the limited space between door and occupant. In a far-side oblique collision, a buffering effect of the seat back to the driver does not play the role during the crash. As a result, the seatbelt slips off the occupant’s shoulder, resulting in a high displacement of the upper body. Thus, ensuring the restraint effect of the seatbelt may be a crucial problem for far-side oblique collision. This study can provide a reference to the occupant safety protection during vehicle accidents.

Following strategies of Coastal Open Go West and Reviving Northeastern Old Industrial Base the state put forward the strategy of Rising of Central China in order to promote its rapid development. Urban agglomeration in Central China is becoming academic focus with unprecedented development momentum. It applies multidisciplinary theory of human geography, regional economics, etc. and takes urban agglomeration of Hunan, Henan and Hubei provinces for example to empirical analysis. Firstly, analyzing the historical evolution, urbanization space development and patterns then comes to spatial association of urban and rural through comparison, Finally, showing the development characteristics of urban agglomeration in Central China and putting forward urbanization suggestion.

According to the moderately Hyper-traffic strategy, the index system about regional highway communication and economic development is established, which is used to evaluate relational grades based on the gray relative theory. After the economic index and the traffic index of previous year are relatively assessed, the conclusion turns out that hyper strategy is remarkable influence on the economic development of Hebei in China. Obviously the hyper-strategy decision of regional government is supported by this theory argument, and the analyzed result is the basis of the study on adaptability and coordination between the highway traffic and economy of districts in terms of the theory of complex systems.

The chest is one of the most frequently injured body parts during a side impact. In this study, the effects of impact angle, impact speed, and D-ring position on the occupant’s chest injury in the far-side crash were analyzed. First, a model with a sled and a Test Human Occupant Restraint (THOR) dummy was established. Second, the acceleration curves with peaks of 6.6 and 9.0 g were applied to the sled. Then 12 sets of simulations with different impact angles and D-ring positions were conducted to evaluate the occupant’s chest responses. Results indicate that the peak chest deflection at Lower Left (LL) decreased by 11.6% on average, and that at Lower Right (LR) increased by 11.7% on average when the D-ring position moved backward. Meanwhile, with the D-ring position moving upward, the peak chest deflection at LL grew by 24.8% on average, while it decreased by 14.7% at LR.