EUROPEAN JOURNAL OF OPERATIONAL ‘“ RESEARCH LSEVIER European Journal of Operational Research 105 (1998) 630-631 Contents Volume 105 Theory and Methodology A model for warehouse order picking R.L. Daniels, J.L. Rummel and R. Schantz Optimal product and server locations in one-dimensional storage racks R.G. Vickson and X. Lu Multicriteria inventory classification using a genetic algorithm H. Altay Guvenir and E. Erel Optimal strategy for the integrated vendor—buyer inventory model S. Viswanathan Base stock policies for production/inventory problems with uncertain capacity levels R. Gullu Aggregate scheduling and network solving of multi-stage and multi-item manufacturing systems H.-J. Huang and G. Xu A new constructive heuristic for the flowshop scheduling problem C. Koulamas Time lag size in multiple operations flow shop scheduling heuristics J. Riezebos and G.J.C. Gaalman Capacity planning by the dynamic multi-resource generalized assignment problem (DMRGAP) A. Shtub and K. Kogan Searching for an optimal rotation age for forest stand management under stochastic log prices A. Yoshimoto and I. Shoji Bayesian inferences for several autoregressive processes D. Salazar and D.H. Moen Action-timing problem with sequential Bayesian belief revision process J.-H. Ahn and J.J. Kim Neural network as a simulation metamodel in economic analysis of risky projects A.B. Badiru and D.B. Sieger A learning curve model with knowledge depreciation G. Li and S. Rajagopalan Hierarchical multi-objective decision making C. Homburg Interval-valued preference structures T. Bilgig Fluid stochastic Petri nets: Theory, applications, and solution techniques G. Horton, V.G. Kulkarni, D.M. Nicol and K.S. Trivedi Lower bounds for nonlinear assignment problems using many body interactions B. Ramachandran and J.F. Pekny Efficient cuts in Lagrangean ‘Relax-and-Cut’ schemes M. Guignard Non-linear integer programming by Darwin and Boltzmann mixed strategy P. Tian, J. Ma and D.-M. Zhang A Newton-type univariate optimization algorithm for locating the nearest extremum C.-L. Tseng Contents Volume 105 Models of wayfinding in emergency evacuations G.G. Lovas The rural postman problem with deadline classes A.N. Letchford and R.W. Eglese One-dimensional machine location problems in a multi-product flowline with equidistant locations B.R. Sarker, W.E. Wilhelm and G.L. Hogg The choice of a technical efficiency measure on the free disposal hull reference technology: A comparison using US banking data B. De Borger, G.D. Ferrier and K. Kerstens Accommodating diverse institutional investment objectives and constraints using non-linear goal programming J.G. Powell and 1.M. Premachandra Epsilon-dominating solutions in mean-variance portfolio analysis D.J. White Deterministic models of perishable inventory with stock-dependent demand rate and nonlinear holding cost B.C. Giri and K.S. Chaudhuri The canning problem revisited: The case of capacitated production and fixed demand S.M. Pollock and D. Golhar Sensitivity calculation of the throughput of an FMS with respect to the routing mix using perturbation analysis T. Koltai and S. Lozano Scheduling under a common due-date on parallel unrelated machines G.I. Adamopoulos and C.P. Pappis Scheduling a single machine to minimize earliness penalties subject to the SLK due-date determination method X. Qi and F.-S. Tu Impact of learning and fatigue factors on single machine scheduling with penalties for tardy jobs V.R. Dondeti and B.B. Mohanty On stochastic machine scheduling with general distributional assumptions W. Li and K.D. Glazebrook An optimal tree search method for the manufacturing systems cell formation problem K. Spiliopoulos and S. Sofianopoulou Designing reliable tree networks with two cable technologies L. Gouveia and E, Janssen The effects of exogenous variables in efficiency measurement — A Monte Carlo study C. Yu The utility efficient set and its interactive reduction S. Rios-Insua and A. Mateos Different transformations for solving non-convex trim-loss problems by MINLP I. Harjunkoski, T. Westerlund, R. Porn and H. Skrifvars An approximately global optimization method for assortment problems H.-L. Li and C.-T. Chang A GRASP for the biquadratic assignment problem T. Mavridou, P.M. Pardalos, L.S. Pitsoulis and M.G.C. Resende Inner and outer approximations of technology: a data envelopment analysis approach R. Fare and S.K. Li Short Communication 626 A note on pseudo-invexity and symmetric duality S. Chandra and V. Kumar Sections 630 Contents Volume 105