Additional file 1 of Stellate nonheritable idiopathic foveomacular retinoschisis in juveniles: case report

Supplementary Material

The diagram of the calculation of the potential energy.

<p>The diagram of the calculation of the potential energy.</p

The modeling of attraction characteristics regarding passenger flow in urban rail transit network based on field theory

<div><p>Aimed at the complicated problems of attraction characteristics regarding passenger flow in urban rail transit network, the concept of the gravity field of passenger flow is proposed in this paper. We establish the computation methods of field strength and potential energy to reveal the potential attraction relationship among stations from the perspective of the collection and distribution of passenger flow and the topology of network. As for the computation methods of field strength, an optimum path concept is proposed to define betweenness centrality parameter. Regarding the computation of potential energy, Compound Simpson’s Rule Formula is applied to get a solution to the function. Taking No. 10 Beijing Subway as a practical example, an analysis of simulation and verification is conducted, and the results shows in the following ways. Firstly, the bigger field strength value between two stations is, the stronger passenger flow attraction is, and the greater probability of the formation of the largest passenger flow of section is. Secondly, there is the greatest passenger flow volume and circulation capacity between two zones of high potential energy.</p></div

The verification method of the optimum path of passenger flow.

<p>The verification method of the optimum path of passenger flow.</p

The interpretation of the source point and the gathering point.

<p>The interpretation of the source point and the gathering point.</p

The contour lines of potential energy with all stations of No. 10 Line of Beijing subway as the source points.

<p>The contour lines of potential energy with all stations of No. 10 Line of Beijing subway as the source points.</p

The pattern of topological structure of the URT network.

<p>The pattern of topological structure of the URT network.</p

The positive and negative field strength of the source points regarding six stations in No. 10 Line of Beijing subway.

<p>The positive and negative field strength of the source points regarding six stations in No. 10 Line of Beijing subway.</p

The contour lines of negative field strength of the gathering points regarding all stations of No. 10 Line of Beijing subway.

<p>The contour lines of negative field strength of the gathering points regarding all stations of No. 10 Line of Beijing subway.</p

The data of passenger flow of Line 10 of Beijing subway.

<p>The data of passenger flow of Line 10 of Beijing subway.</p