(RobotHold_t) is a boolean variable determining whether the robot is holding something or not.
where (x_{textit {ij}}^{b}) is a boolean variable, (x_{textit {ij}}^{b} = 1) if OBU pair {i,j} is scheduled on channel b, 0 otherwise.
where δ ijk is a Boolean variable which represents the utilization of parking space j in zone k from sign i. τ ijk is the utilization of car park.
A stepwise regression run and a subsequent ANOVA test show that dip, convection, and their product are the most significant factors: E = beta_{0} + beta_{D} D + beta_{C} C + beta_{CD} CD (3)where C is a boolean variable indicating whether the simulation was run with natural convection initialization, D is dip in degrees, and E is gross energy output in joules; β's are the regression coefficients.
In summary, the general objective function is obtained by adding terms 2 and 3 giving (4) where w B is a weight (integer), f B is the flux (real value) of the biomass reaction, s i is a boolean variable, V is the set of all boolean variables, w i is a weight (integer), r i is any reaction, c h is a small non-negative constant (typically <1) and f r i is the flux (real value) of reaction r i.
The problem can be cast as a bilevel mixed-integer linear program (MILP), Equations (2 - 8), where each reaction j is assigned a Boolean variable y j ∈ {0,1}.
ABA is also a Boolean variable: ABA = 1 indicates the presence of ABA (i.e. ABA treatment) and ABA = 0 represents the absence of ABA (i.e. solvent control).
In the formalism of Boolean networks, the state of a species is described by a Boolean variable, which value is either 1 if the species is active (i.e. its activity is detectable, in biological terms) or 0 if inactive (its activity is undetectable).
Reactions that are considered indispensable are not assigned a Boolean variable.
