Advances in Civil Engineering / 2020 / Article / Tab 1

Research Article

Model and Algorithm for Dependent Activity Schedule Optimization Combining with BIM

Table 1

List of the main symbols.

VariablesMeaning

Upstream duration
Downstream duration
Characteristics of upstream activities
The reliable of vendors
Decision time
Communication time
The start time of overlapping & the first communication time
Time interval between two adjacent communications
The amount of communication intervals
Maturity of upstream activity at t-time
The maturity evolution coefficient of upstream activities before overlapping
The maturity evolution coefficient of downstream activities after overlapping
Downstream sensitivity
Team error correction ability
Learning coefficient
The rework time caused by the change of upstream activities in the adjacent two communication intervals
The total rework time
The total duration
The shorting duration
The overlapping time
Unit rework cost
Unit overlapping cost
Unit reward amount
Unit communication cost
The total revenue
TCCommunication frequency

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