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Table 1 Statistical descriptors of the exposure variation dimensions (level, repetitiveness/velocity and similarity), with parameter values used in the simulation

From: Cluster-based exposure variation analysis

Cycle parameters

Size of variation

Statistical descriptors

Values in the literature

Applied distribution

Level

low

mean

25° *

N(25,4.52)

  

SD

4.5° *

 
 

high

10th

33° #

N(45,7.52)

  

90th

53°#

 

Velocity

low

50th

3°/s $

log-N(1.1,1.32)

  

90th

16°/s $

 
 

high

50th

38°/s #

log-N(3.6,0.92)

  

90th

122°/s #

 

Duration

small

mean

216 s £

N(216, 36.32)

  

SD

36.3 s £

 
 

large

mean

216 s £

N(216, 51.82)

  

SD

51.8 s £

 
  1. The parameters of applied distributions used in the simulation of exposure variation dimensions (level, repetitiveness/velocity and similarity).
  2. Exposure groups were simulated based on distributions parameters as shown by N(μ,σ2) representing a normal and log-N(μ,σ2) a log-normal distribution. SD stands for standard deviation and 10th, 50th and 90th indicate percentiles of the exposure distributions. The parameters of the distribution are extracted from relevant literature; *, #, $ and £ represent the studies in the literature upon which the parameters of the distributions are based. *: Nordander et al (2008), #: Hansson et al (2010), $: Arvidsson et al (2006) and £: Möller et al (2004). We refer to the reference list for detailed information.