Volume 53 (2019) no. 2

Table of contents

An N -Policy discrete-time G e o / G / 1 queue with modified multiple server vacations and Bernoulli feedback-Policy discrete-time -Policy discrete-time Policy discrete-time
p. 367-387
Trees with equal Roman {2}-domination number and independent Roman {2}-domination number
p. 389-400
Impact of vehicle tracking on a routing problem with dynamic travel times
p. 401-414
Analysis of M/G/1 retrial queues with second optional service and customer balking under two types of Bernoulli vacation schedule
p. 415-443
Multi-objective and discrete Elephants Herding Optimization algorithm for QoS aware web service composition
p. 445-459
Bi-objective optimization models for network interdiction
p. 461-472
Use of “e” and “g” operators to a fuzzy production inventory control model for substitute items
p. 473-486
An efficient simplification method for point cloud based on salient regions detection
p. 487-504
An exact approach for the r-interdiction median problem with fortification
p. 505-516
An optimal inventory model with interaction of lot size, production rate and lead-time in a fuzzy back-order system
p. 517-538
Symmetric duality results for second-order nondifferentiable multiobjective programming problem
p. 539-558
Optimal online algorithms for the portfolio selection problem, bi-directional trading and -search with interrelated prices
p. 559-576
Portfolio selection with robust estimators considering behavioral biases in a causal network
p. 577-591
Evaluation of a new decision-aid parameter for job shop scheduling under uncertainties
p. 593-608
Optimal product quality and pricing strategy for a two-period closed-loop supply chain with retailer variable markup
p. 609-626
Bounds for signed double Roman k-domination in trees
p. 627-643
Gangless cross-evaluation in DEA: an application to stock selection
p. 645-655
Rapidly convergent Steffensen-based methods for unconstrained optimization
p. 657-666
Two-period pricing strategies in a two-echelon supply chain with conspicuous consumption
p. 667-685
Benchmarking with network dea in a fuzzy environment
p. 687-703
Fuzzy stochastic Data Envelopment Analysis with application to NATO enlargement problem
p. 705-721