Exploring the Node Importance and Its Influencing Factors in the Railway Freight Transportation Network in China

Abstract

Node importance is a key factor affecting the overall operation efficiency of a railway freight transportation network (RFTN) that can be measured with the indicators of Hub and PageRank. Based on complex network theory and the national railway cargo exchange data of China’s provinces, this study constructs an RFTN model with the 31 provinces as the nodes and measures the values of Hub and PageRank for the 31 provinces. Then, the time evolution law of the importance of the provincial nodes is analyzed comprehensively, and, using a regression model, the influencing factors of the importance of the provincial nodes are identified. The results show the following. (1) The uneven distribution of natural resources will affect the spatial changes in the importance of RFTN nodes. The Hub values tended to cluster around the average, and the economic structure of the output-oriented provinces improved as a whole. At the same time, the PageRank values of many provinces in the central and western regions significantly increased, and those provinces exhibited more frequent exchanges of goods with other provinces and closer economic ties with other regions. (2) The traffic fixed asset investments and the population density have the most obvious influences on the importance of the provincial nodes with a positive effect. In contrast, the railway freight concentration (RFC) coefficient, geographical location (longitude and latitude), and coastal region all have negative effects on the importance of provincial nodes. The results of this study provide scientific decision-making support for the reasonable establishment and distribution of RFTN hubs in China.

Researches on the Influence of Blasting of Newly Built Tunnel on the Existing Tunnel Structure with Small Cross Angle

“…e dynamic response tends to be stronger with the increase of maximum charge per delay, the better surrounding rock condition, and the decrease of cross angle and clear distance. (2) Comparing the dynamic response of different parts of existing tunnel structure, the maximum vibration velocity always appears at the left foot, the maximum lining stress always occurs at the left and right arch waist, and the maximum displacement always appears in the Z-direction. Hence, the above results can be referred to for development of the protective guideline of tunnel structure which is near to the blasting activities.…”

“…Nowadays, the railway has become one of the important modern transportations which is related to the national economy and people's livelihood [1,2]. With the construction of the large-scale transport network, it is unavoidable to appear more and more spatially crossing railway tunnels with very small crossing angles, especially for the high-speed railways whose lines must be as straight as possible [3,4], for example, in the new Guiyang-Guangzhou Railway, the Sizhai Tunnel goes under the Ruipo Tunnel, with a plane crossing angle of 22 °and the minimum vertical clear distance of 23.0 m [5].…”

Social Sensing of the Imbalance of Urban and Regional Development in China Through the Population Migration Network around Spring Festival

“…The PageRank algorithm is a commonly used webpage ranking algorithm. It has been widely used in social network analysis [32], transportation planning [33], and network security [34]. The PageRank algorithm takes the number and quality of hyperlinks between web pages as the main factors to analyze the importance of a web page [35].…”

A Potential Information Capacity Index for Link Prediction of Complex Networks Based on the Cannikin Law

“…Information transmission is a common phenomenon in nature and human society, and it is also an important intrinsic motivation for establishing connections in complex networks [ 12 ]. Different kinds of information flow constantly in different networks, such as messages are sent from the terminal to any person through the infrastructure network [ 22 ], passengers travel from one train station to another through the railway transportation network [ 23 ], neural signal is transmitted from one neuron to another through the neural network [ 24 ] and so on.…”