Volume 54 (2020) no. 2

Table of contents

A three-agent scheduling problem for minimizing the flow time on two machines
p. 307-323
DEA based production planning considering technology heterogeneity with undesirable outputs
p. 325-339
On the preconditioned projective iterative methods for the linear complementarity problems
p. 341-349
Randomized control of arrivals in a finite-buffer G I / M / 1 system with starting failures
p. 351-367
Customer relationship management and new product development in designing a robust supply chain
p. 369-391
Z -equilibria in Bi-matrix games with uncertain payoffs
p. 393-412
Replenishment of imperfect items in an EOQ inventory model with partial backordering
p. 413-434
Integrated vendor–buyer strategies for imperfect production systems with maintenance and warranty policy
p. 435-450
A metaheuristic penalty approach for the starting point in nonlinear programming
p. 451-469
An M/G/1 retrial queue with single working vacation under Bernoulli schedule
p. 471-488
A descent derivative-free algorithm for nonlinear monotone equations with convex constraints
p. 489-505
Near-optimal solutions and tight lower bounds for the parallel machines scheduling problem with learning effect
p. 507-527
Algorithms for four-machine flowshop scheduling problem with uncertain processing times to minimize makespan
p. 529-553
Scheduling job shop problems with operators with respect to the maximum lateness
p. 555-568
Strategic behavior in the constant retrial queue with a single vacation
p. 569-583
Making high school students aware of optimization through games and puzzles
p. 585-595
Forecasting stock market price by using fuzzified Choquet integral based fuzzy measures with genetic algorithm for parameter optimization
p. 597-614