# Elsevier

# European Journal of Operational Research

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**Current editor:**Jesus Artalejo

**Current editor:**Jean-Charles. Billaut

**Current editor:**Robert Dyson

**Current editor:**Lorenzo Peccati

**For corrections or technical questions regarding this series, please contact (Shamier, Wendy)**

**Series handle:**repec:eee:ejores

**ISSN:**0377-2217

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### March 1996, Volume 89, Issue 3

**570-580 An amalgation of games***by*Borm, Peter & Garcia-Jurado, Ignacio & Potters, Jos & Tijs, Stef**581-592 Nonparametric econometric modelling: A neural network approach***by*Shouhong Wang**593-608 Optimal batch size and raw material ordering policy for a production system with a fixed-interval, lumpy demand delivery system***by*Sarker, Bhaba R. & Parija, Gyana R.**609-617 LP relaxation of the two dimensional knapsack problem with box and GUB constraints***by*Bagchi, Ansuman & Bhattacharyya, Nalinaksha & Chakravarti, Nilotpal**618-641 Generalized optimal designs and contingency plans in linear systems***by*Yong Shi & Po-Lung Yu & Dazhi Zhang**642-659 Auxiliary tool allocation in flexible manufacturing systems***by*Atan, Tankut S. & Pandit, Ram**660-667 The joint distribution of the number of occurrences of two interrelated Poisson processes***by*Cuffe, Barry P. & Friedman, Moshe F.**668-670 Some notes on the time-variant Lyapunov theory***by*Molnar, S. & Szidarovszky, F.**671-670 A comment on "Grey integer programming: an application to waste management planning under uncertainty" by Guo H. Huang, Brian W. Baetz, Gilles G. Patry : European Journal of Operational Research 83 (1995) 594-620***by*Jenkins, Larry

### March 1996, Volume 89, Issue 2

**223-225 The management of congestion***by*van Ackere, Ann**226-236 Pricing, routing, and incentive compatibility in multiserver queues***by*Bradford, Richard M.**237-245 Cost of congestion, operational efficiency and management accounting***by*Balachandran, Kashi R. & Radhakrishnan, Suresh**246-258 An appointment-based service center with guaranteed service***by*Babad, Yair M. & Dada, Maqbool & Saharia, Aditya N.**259-268 Manufacturing lead times, system utilization rates and lead-time-related demand***by*Weng, Z. Kevin**269-276 A lot sizing model with queueing delays: The issue of safety time***by*Lambrecht, Marc R. & Chen, Shaoxiang & Vandaele, Nico J.**277-284 Optimizing steady state Markov chains by state reduction***by*Grassmann, Winfried K.**285-301 A generalized maintenance model for stochastically deteriorating equipment***by*Stadje, Wolfgang & Zuckerman, Dror**302-312 Capacity planning under different inspection strategies***by*Gurnani, Haresh & Drezner, Zvi & Akella, Ram**313-325 Optimal time varying lot-sizing models under inflationary conditions***by*Hariga, M. A. & Ben-Daya, M.**326-340 Integrated multi-item production-inventory systems***by*Arreola-Risa, Antonio**341-354 Distribution planning for a divergent depotless two-echelon network under service constraints***by*Verrijdt, J. H. C. M. & de Kok, A. G.**355-365 Modelling setup times, process batches and transfer batches using activity network logic***by*Demeulemeester, Erik L. & Herroelen, Willy S.**366-379 Task scheduling with and without communication delays: A unified approach***by*Krishnamoorthy, Venkatesh & Efe, Kemal**380-399 A decision model for interdependent information system project selection***by*Santhanam, Radhika & Kyparisis, George J.**400-407 A note on an iterative forward/backward scheduling technique with reference to a procedure by Li and Willis***by*Ozdamar, Linet & Ulusoy, Gunduz**408-422 Comparative studies in interactive multiple objective mathematical programming***by*Aksoy, Yasemin & Butler, Timothy W. & Minor, Elliott D.**423-426 An O(m log n) algorithm for the max + sum spanning tree problem***by*Punnen, Abraham P. & Nair, K. P. K.**427-444 A Thurstonian view of the analytic hierarchy process***by*MacKay, David B. & Bowen, William M. & Zinnes, Joseph L.

### February 1996, Volume 89, Issue 1

**1-17 Optimization models for salesforce compensation***by*Albers, Sonke**18-33 Performance assessment in higher education in Britain***by*Johnes, Jill**34-52 State realization with exogenous variables - A test on blast furnace data***by*Saxen, Henrik & Ostermark, Ralf**53-69 Piecewise affine approximations for the control of a one-reservoir hydroelectric system***by*Drouin, Nicol & Gautier, Antoine & Lamond, Bernard F. & Lang, Pascal**70-85 Team coordination in decision support projects***by*Mentzas, Gregory N.**86-99 Multi-level, single-machine lot sizing and scheduling (with initial inventory)***by*Kimms, A.**100-107 Minimizing mean tardiness subject to unspecified minimum number tardy for a single machine***by*Ben-Daya, M. & Duffuaa, S. O. & Raouf, A.**108-126 A heuristic algorithm for the asymmetric capacitated vehicle routing problem***by*Vigo, Daniele**127-134 Optimal access control for broadband services: Stochastic knapsack with advance information***by*Chius, Steve Y. & Lu, Leonard & Anthony Cox, Louis**135-146 Solving the failure-to-fit problem for plant layout: By changing department shapes and sizes***by*Lin, Jin-Ling & Foote, Bobbie & Pulat, Simin & Chang, Chir-Ho & Cheung, John Y.**147-163 Analysis of a synchronization station for the performance evaluation of a kanban system with a general arrival process of demands***by*Mascolo, Maria Di**164-171 On the M/G/1 machine interference model with spares***by*Gupta, U. C. & Srinivasa Rao, T. S. S.**172-175 Preemptive scheduling in a two-stage multiprocessor flow shop is NP-hard***by*Hoogeveen, J. A. & Lenstra, J. K. & Veltman, B.**176-184 Optimal expansion of capacitated transshipment networks***by*Ahuja, R. K. & Batra, J. L. & Gupta, S. K. & Punnen, A. P.**185-192 An interactive approach for vector optimization problems***by*Hussein, Mohammad L. & Abd El-Ghaffar, F. S.**193-201 Using aspiration levels in an interactive interior multiobjective linear programming algorithm***by*Abel, Ami & Korhonen, Pekka**202-211 Using approximate gradients in developing an interactive interior primal-dual multiobjective linear programming algorithm***by*Arbel, Ami & Oren, Shmuel S.**212-214 A note on programming problems with linear-plus-linear-fractional objective functions***by*Hirche, Joachim**215-220 Comment on D.J. White, "A characterization of the feasible set of objective function vectors in linear multiple objective problems" : European Journal of Operational Research 52 (1991) 361-366***by*Lotov, Alexander V.

### February 1996, Volume 88, Issue 3

**413-427 Optimization and sensitivity analysis of computer simulation models by the score function method***by*Kleijnen, Jack P. C. & Rubinstein, Reuven Y.**428-445 Modelling resource availability in general hospitals design and implementation of a decision support model***by*Kusters, Rob J. & Groot, Petra M. A.**446-463 Integration of operation routing and economic production quantity decisions in batch manufacturing systems***by*Egbelu, Pius J.**464-474 The team orienteering problem***by*Chao, I-Ming & Golden, Bruce L. & Wasil, Edward A.**475-489 A fast and effective heuristic for the orienteering problem***by*Chao, I-Ming & Golden, Bruce L. & Wasil, Edward A.**490-503 The capacitated distribution and waste disposal problem***by*Bloemhof-Ruwaard, Jacqueline M. & Salomon, Marc & Van Wassenhove, Luk N.**504-515 Cash flow optimization in delivery scheduling***by*Dror, Moshe & Trudeau, Pierre**516-524 An SA/TS mixture algorithm for the scheduling tardiness problem***by*Adenso-Diaz, Belarmino**525-536 Robustly efficient parametric frontiers via Multiplicative DEA for domestic and international operations of the Latin American airline industry***by*Charnes, Abraham & Gallegos, Armando & Li, Hongyu**537-549 Implied constraints and an alternate unified development of nonlinear programming theory***by*Johri, Pravin K.**550-562 Finding improving directions in Lagrangian relaxation by fictitious play: A NASA scheduling application***by*Bell, Colin E.**563-571 A simple Tabu Search method to solve the mixed-integer linear bilevel programming problem***by*Wen, U. P. & Huang, A. D.**572-577 Pseudo-invexity and duality in nonlinear programming***by*Nanda, S. & Das, L. N.**578-582 Testing integer knapsacks for feasibility***by*Hansen, Paul & Ryan, Jennifer**583-585 A note on returns to scale in DEA***by*Banker, R. D. & Bardhan, I. & Cooper, W. W.**586-591 Optimizing flow rates in a queueing network with side constraints***by*Pourbabai, B. & Blanc, J. P. C. & van der Duyn Schouten, F. A.**592-598 A simple heuristic for buffer design in finite-capacity queues***by*Gouweleeuw, Frank N. & Tijms, Henk C.**599-613 Discrete NT-policy single server queue with Markovian arrival process and phase type service***by*Alfa, Attahiru Sule & Frigui, Imed**614-621 Queueing models with delayed state-dependent service times***by*Wang, Pu Patrick**622-636 A K-step look-ahead analysis of value iteration algorithms for Markov decision processes***by*Herzberg, Meir & Yechiali, Uri

### January 1996, Volume 88, Issue 2

**203-214 Statistical quality control and improvement***by*Stuart, Michael & Mullins, Eamonn & Drew, Eileen**215-230 Strategic planning of transportation services for petroleum products An application of capacitated gravity models***by*Douglas Smith, L. & Moses, Steven W.**231-250 Scheduling crackdowns on illicit drug markets***by*Naik, Ashich V. & Baveja, Alok & Batta, Rajan & Caulkins, Jonathan P.**251-256 Economical and ecological utility oriented analysis of the process of anaerobic digestion of waste waters***by*Pavlov, Yu. & Grancharov, D. & Momchev, V.**257-268 Determination of the portfolio selection for a property-liability insurance company***by*Li, Susan X. & Huang, Zhimin**269-286 SIMPSON: An intelligent assistant for short-term manufacturing scheduling***by*May, Jerrold H. & Vargas, Luis G.**287-303 Setting planned lead times for multi-operation jobs***by*Matsuura, Haruki & Tsubone, Hitoshi & Kanezashi, Masakazu**304-319 On the estimation of optimal batch sizes in the analysis of simulation output***by*Song, Wheyming Tina**320-327 Project management with time, cost, and quality considerations***by*Babu, A. J. G. & Suresh, Nalina**328-335 Scheduling about a given common due date to minimize mean squared deviation of completion times***by*Weng, Xiaohua & Ventura, Jose A.**336-344 Scheduling jobs with different, job-dependent earliness and tardiness penalties using the SLK method***by*Adamopoulos, G. I. & Pappis, C. P.**345-347 A dominant subset of V-shaped sequences for a class of single machine sequencing problems***by*Al-Turki, Umar M. & Mittenthal, John & Raghavachari, M.**348-357 Arbitrated matching: Formulation and protocol***by*Ng, W. -Y. & Choi, K. -W. & Shum, K. -H.**358-367 Minimizing deviations from the group mean: A new linear programming approach for the two-group classification problem***by*Lam, Kim Fung & Choo, Eng Ung & Moy, Jane W.**368-381 A combined constraint-space, objective-space approach for determining high-dimensional maximal efficient faces of multiple objective linear programs***by*Dauer, Jerald P. & Gallagher, Richard J.**382-403 Conditional subgradient optimization -- Theory and applications***by*Larsson, Torbjorn & Patriksson, Michael & Stromberg, Ann-Brith**404-412 A strategy for evolution of alhorithms to increase the computational effectiveness of NP-hard scheduling problems***by*Li, Der-Chiang & Lin, Han-Kun & Torng, Kuan-Yueh

### January 1996, Volume 88, Issue 1

**1-2 Editorial***by*Mercer, Alan & Tilanus, Bernhard & Zimmermann, Hans-Jurgen**3-12 Stochastic vehicle routing***by*Gendreau, Michel & Laporte, Gilbert & Seguin, Rene**13-22 Variations in price elasticities***by*George, Jennifer & Mercer, Alan & Wilson, Helen**23-27 On the impact of infrequent trading on the APT systematic risk components -- Evidence from a thin security market***by*Martikainen, Teppo & Perttunen, Jukka & Yli-Olli, Paavo & Gunasekaran, A.**28-41 Choosing regulatory options when environmental costs are uncertain***by*Gottinger, Hans W.**42-49 AHP-based synergy allocation to the partners in a merger***by*Ossadnik, Wolfgang**50-68 Optimal procedures for the discrete time/cost trade-off problem in project networks***by*Demeulemeester, Erik L. & Herroelen, Willy S. & Elmaghraby, Salah E.**69-87 Stock cutting to minimize cutting length***by*Bhadury, J. & Chandrasekaran, R.**88-100 A Stochastic Dynamic Programming model for scheduling of offshore petroleum fields with resource uncertainty***by*Haugen, Kjetil K.**101-113 Heuristics and exact algorithms for solving the Monden problem***by*Bautista, J. & Companys, R. & Corominas, A.**114-123 A Lagrangean heuristic for the maximal covering location problem***by*Galvao, Roberto Dieguez & ReVelle, Charles**124-138 Scheduling programs with repetitive projects: A comparison of a simulated annealing, a genetic and a pair-wise swap algorithm***by*Shtub, Avraham & LeBlanc, Larry J. & Cai, Ziyong**139-151 Mechanisms for local search***by*Anderson, E. J.**152-164 Analyzing service blueprints using phase distributions***by*Berkley, Blair J.**165-181 On genetic algorithms for the packing of polygons***by*Jakobs, Stefan**182-202 Computational comparison on the partitioning strategies in multiple choice integer programming***by*Lin, Edward Y. H. & Bricker, Dennis L.

### December 1995, Volume 87, Issue 3

**1-1 Operational research in Europe -- A special issue to celebrate the 20th anniversary of EURO***by*Pappis, Costas**Preface from the president of IFORS***by*Bell, Peter**404-407 The founding of EURO The Association of European Operational Research Societies within IFORS***by*Zimmermann, H. -J.**408-414 EURO 1975-1995: A fruitful evolution***by*Brans, J. Pierre**415-421 EURO 20th Anniversary: The prospective future***by*Krarup, Jakob**424-429 OR in Europe: Facts about EURO member societies***by*Pappis, C. P.**430-434 Operational research in the Czech Republic***by*Manas, Miroslav**435-439 Operations research and its practice in Finland -- An update***by*Kivijarvi, Hannu & Kuula, Markku & Wallenius, Jyrki**440-444 Operations research activities in Germany***by*Fleischmann, Bernhard**445-451 OR practice in Greece: Status and challenges***by*Pappis, C. P. & Dimopoulou, M.**452-455 On the practice of OR in Hungary***by*Harnos, Zs. & Komlosi, S. & Rapcsak, T. & Szantai, T.**456-460 A review of OR practice in Iceland***by*Olafsson, Snjolfur**461-463 OR in Portugal: Past achievements and current perspectives***by*Guimaraes, Rui & Themido, Isabel**464-468 OR practice in South Africa***by*Stewart, Theodor J.**469-470 OR application in Spain. A brief review***by*Lopez, Marco A. & Pastor, Jesus T.**471-473 A partial view of OR in Switzerland***by*de Werra, Dominique & Hertz, Alain**474-482 Supporting real decisions: A review of OR practice in the UK***by*Ranyard, John C.**484-499 Strands of practice in OR (the practitioner's dilemma)***by*Corbett, Charles J. & Overmeer, Willem J. A. M. & Van Wassenhove, Luk N.**500-506 Operational research models in action, the result of international cooperation -- A potpourri***by*Petrovic, Radivoj & Guberinic, Slobodan & Batanovic, Vladan & Cvetkovic, Dragos**507-518 Measuring macroeconomic performance in the OECD: A comparison of European and non-European countries***by*Knox Lovell, C. A. & Pastor, Jesus T. & Turner, Judi A.**519-534 Planning of high school examinations in Denmark***by*Hansen, Michael Pilegaard & Vidal, ReneVictor Valqui**535-550 Goal programming & data envelopment analysis (GoDEA) for target-based multi-level planning: Allocating central grants to the Greek local authorities***by*Athanassopoulos, Antreas D.**551-563 Decision analysis interviews in environmental impact assessment***by*Marttunen, Mika & Hamalainen, Raimo P.**564-573 Aggregate planning and scheduling in the food industry: A case study***by*Tadei, R. & Trubian, M. & Avendano, J. L. & Della Croce, F. & Menga, G.**574-585 An intelligent system for US Coast Guard cutter scheduling***by*Darby-Dowman, K. & Fink, R. K. & Mitra, G. & Smith, J. W.**586-598 A case study in empty railcar distribution***by*Spieckermann, Sven & Vo[ss], Stefan**599-612 Risk analysis of catastrophes using experts' judgements: An empirical study on risk analysis of major civil aircraft accidents in Europe***by*Bigun, Elizabeth Saers**613-623 Distribution of gas cylinders***by*Folsz, F. & Meszaros, C. & Rapcsak, T.**624-640 Planning and performance in state-owned enterprises: A multidimensional assessment***by*Labroukos, N. S. & Lioukas, S. & Chambers, D.**641-657 Assessing police forces in England and Wales using data envelopment analysis***by*Thanassoulis, Emmanuel**658-669 Case study based on a multi-period multi-criteria production planning model***by*Kalpic, Damir & Mornar, Vedran & Baranovic, Mirta**670-684 A minimax assignment problem in treelike communication networks***by*Burkard, Rainer E. & Cela, Eranda & Woeginger, Gerhard J.**685-692 Multi-item inventory control: A multicriteria view***by*Lenard, J. D. & Roy, B.**693-706 Probabilistic combinatorial optimization problems on graphs: A new domain in operational research***by*Bellalouna, Monia & Murat, Cecile & Paschos, Vangelis Th.**708-721 AMOS -- A probability-driven, customer-oriented decision support system for target marketing of solo mailings***by*Levin, Nissan & Zahavi, Jacob & Olitsky, Morris**722-730 The design of a 0-1 integer optimizer and its application in the Carmen system***by*Wedelin, Dag**731-738 An application of a multi-objective programming technique to construction accuracy control of cable-stayed bridges***by*Nakayama, Hirotaka & Kaneshige, Kazuyoshi & Takemoto, Shinji & Watada, Yasuo

### December 1995, Volume 87, Issue 2

**203-213 The capacitated plant location problem***by*Sridharan, R.**214-222 Optimal routing in a transportation network***by*Goczylla, Krzysztof & Cielatkowski, Janusz**223-246 Example application of the cognitive design procedure for an order pick system: Case study***by*Yoon, Chang S. & Sharp, Gunter P.**247-256 PETAPS: A prototype decision support system for consumer product marketing and promotion***by*Davis, Joseph G. & Sundaram, David**257-273 A mixed integer model of bidding strategies for outsourcing***by*Nam, K. & Chaudhury, A. & Rao, H. Raghav**274-283 Assignment of a job load in a distributed system: A multicriteria design method***by*Lee, Heeseok**284-288 Single machine scheduling problem with fuzzy precedence relation***by*Ishii, Hiroaki & Tada, Minoru**289-298 Ramifications of tool magazine size on the makespan and routing flexibility of flexible manufacturing systems***by*Mohamed, Zubair M.**299-315 Impact of job-sequence on the down-time of a deteriorating flexible machine***by*Chakravarty, Amiya K. & Balakrishnan, Nagraj**316-327 Optimal inventory policies under service-sensitive demand***by*Ernst, Ricardo & Powell, Stephen G.**328-342 Column generation applied to linear programs in course registration***by*Sankaran, Jayaram K.**343-348 A hybrid heuristic for the generalized assignment problem***by*Amini, Mohammad M. & Racer, Michael**349-367 Simulation metamodel estimation using a combined correlation-based variance reduction technique for first and higher-order metamodels***by*Tew, Jeffrey D.**368-374 A two-phase shortest path algorithm for networks with node coordinates***by*Lysgaard, Jens**375-388 Performance bounds for the effectiveness of pooling in multi-processing systems***by*Benjaafar, Saifallah**389-402 Evaluating bank branch location and performance: A case study***by*Boufounou, Paraskevi V.

### November 1995, Volume 87, Issue 1

**1-20 Logistic chain modelling***by*Slats, Piet A. & Bhola, Bis & Evers, Joseph J. M. & Dijkhuizen, Gert**21-34 Statistical validation of simulation models***by*Kleijnen, Jack P. C.**35-44 Simulating health systems: modelling problems and software solutions***by*Davies, Huw T. O. & Davies, Ruth**45-56 Consequences of uncertainty in the analytic hierarchy process: A simulation approach***by*Paulson, Dan & Zahir, Sajjad**57-64 Improved heuristics for sequencing cutting patterns***by*Yuen, Boon J.**65-73 A heuristic procedure for the single-row facility layout problem***by*Ravi Kumar, K. & Hadjinicola, George C. & Lin, Ting-li**74-92 Multiple items procurement under stochastic nonstationary demands***by*Martel, Alain & Diaby, Moustapha & Boctor, Fayez**93-108 An approximation to the continuous review inventory model with perishable items and lead times***by*Chiu, Huan Neng**109-121 Graph theoretic relaxations of set covering and set partitioning problems***by*El-Darzi, Elia & Mitra, Gautam**122-131 The determination of the optimal component input numbers for the completion of a single manufacturing order***by*Nicholls, Miles G.**132-141 Setup cost stability region for the multi-level dynamic lot sizing problem***by*Voros, Jozsef**142-147 On solving a variation of the assignment problem***by*Armstrong, Ronald D. & Jin, Zhiying**148-165 Optimal design of syndicated panels: A mathematical programming approach***by*Golany, B. & Phillips, F. Y. & Rousseau, J. J.**166-174 A special class parametric of knapsack problems: Analytic aids and heuristics***by*White, D. J.**175-187 An expanding-core algorithm for the exact 0-1 knapsack problem***by*Pisinger, David**188-199 Stability analysis for a special interval cutting problem***by*Dempe, S. & Muller, E.**200-202 QHOPDM -- A higher order primal-dual method for large scale convex quadratic programming***by*Altman, Anna

### November 1995, Volume 86, Issue 3

**395-401 Progress with single-item lot-sizing***by*Wolsey, Laurence A.**402-421 A structured model to manage a large number of transactions***by*Andronico, Alfio & Cossa, Laura & Gagliardi, Marco & Spera, Cosimo**422-433 A pulsing model of advertising competition: A game theoretic approach, part B -- Empirical application and findings***by*Mesak, Hani I. & Calloway, James A.**434-451 Multinational plant location as a game of timing***by*Tombak, Mihkel M.**452-468 A double annealing algorithm for discrete location/allocation problems***by*Righini, Giovanni**469-479 Parametric uncapacitated facility location***by*Tcha, Dong-wan & Myung, Young-soo & Chung, Ki-ho**480-490 Improvement heuristics for the Vehicle Routing Problem based on simulated annealing***by*Van Breedam, Alex**491-502 Heuristic procedures for minimizing makespan and the number of required pallets***by*Chu, Chengbin & Proth, Jean-Marie & Sethi, Suresh**503-525 The numerical solution of stochastic automata networks***by*Stewart, William J. & Atif, Karim & Plateau, Brigette**526-536 Minimax regret solution to linear programming problems with an interval objective function***by*Inuiguchi, Masahiro & Sakawa, Masatoshi**537-548 An investigation of the use of goal programming to fit response surfaces***by*Lewis, Robert P. & Taha, Hamdy A.**549-564 A nonlinear programming model for partially observable Markov decision processes: Finite horizon case***by*Serin, Yasemin**565-579 Thermostatistical persistency: A powerful improving concept for simulated annealing algorithms***by*Chardaire, Pierre & Lutton, Jean Luc & Sutter, Alain**580-591 Interdicting the activities of a linear program -- A parametric analysis***by*Chern, Maw-Sheng & Lin, Kao-Cheng

### October 1995, Volume 86, Issue 2

**189-200 Handling multiple sources of variation using influence diagrams***by*Smith, Jim Q.**201-215 Optimal location of routes for vehicles transporting hazardous materials***by*Karkazis, J. & Boffey, T. B.**216-230 Production analysis in different time periods: An application of data envelopment analysis***by*Toshiyuki Sueyoshi**231-248 A pulsing model of advertising competition: A game theoretic approach, part A -- Theoretical foundation***by*Mesak, Hani I. & Calloway, James A.**249-261 Cost analysis of alternative formulations for personnel scheduling in continuously operating organizations***by*Brusco, Michael J. & Jacobs, Larry W.**262-269 V- and GG-shaped properties for optimal single machine schedules for a class of non-separable penalty functions***by*Mittenthal, John & Raghavachari, M. & Rana, Arif I.**270-280 Application of multiattribute theory in a safety monitor for the planning of maintenance jobs***by*Heins, W. & Roling, M. W. M.**281-292 EOQ models for perishable items under stock dependent selling rate***by*Padmanabhan, G. & Vrat, Prem**293-299 On an inventory model with deteriorating items and decreasing time-varying demand and shortages***by*Benkherouf, Lakdere**300-314 Modeling quantity discounts under general price-sensitive demand functions: Optimal policies and relationships***by*Kevin Weng, Z.**315-331 Assessing priority weights from subsets of pairwise comparisons in multiple criteria optimization problems***by*Takeda, Eiji & Yu, Po-Lung**332-336 On the properly efficient points of nonconvex sets***by*The Luc, Dinh**337-344 A bilevel bottleneck programming problem***by*Mathur, Kanchan & Puri, M. C.**345-357 Design of optimal maintenance policies based on on-line sampling plans***by*Hsu, Lie-Fern & Kuo, Shyanjaw**358-365 Optimal sequential file search: A reduced-state dynamic programming approach***by*Blair, Charles & Monahan, George E.**366-373 Purposive contradiction, intervening duality and the nature of probability***by*Ryan, Michael J.