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Table 2 Split activity curve

From: Embedded acoustic emission system based on rock sound source crowd location

Node

α

β

γ

ω

1

|a − b|2 ϕ

ϕ

μϕ

|Δx − Δy|ϕ

2

|a − b|2 ϕ

ϕ

μϕ

|Δx − Δy|ϕ

3

ϕ

|a − b|2 ϕ

|α − β|ϕ

\( \sqrt{\left|{x}^2-{y}^2\right|}\phi \)

4

|a − b|2 ϕ

ϕ

μϕ

|Δx − Δy|ϕ

5

\( \sqrt{ab}\phi \)

\( \sqrt{ab}\phi \)

\( \sqrt{\mu}\phi \)

|αβ − γ|ϕ