Showing papers in "International Journal of Production Economics in 1993"

TL;DR: In this article, a deterministic inventory model is developed by assuming that the demand rate is stock-dependent and the items deteriorate at a constant rate, and the expression for the average net profit π over one production run is derived and its optimization with respect to the decision variables Q (initial stock) and T (duration of a production cycle) is carried out.

TL;DR: In this paper, a heuristic algorithm is presented for scheduling in a flow shop to minimize the total flowtime of jobs, where a preference relation is developed and used as the basis for job insertion to build up the complete schedule.

TL;DR: In this paper, a production control framework for the engineer-to-order case situation was developed and described in the subsequent sections, where the different production phases and production units in the production process were defined as the first step.

TL;DR: A review of the research on scheduling in a dynamic environment is presented and predicts a solution valid for the entire time span specified.

TL;DR: In this paper, the authors discuss different types of flexibility, various means for achieving flexibility and the effect on profitability, distinguishing between the effect of flexibility on sales revenue, cost and assets.

TL;DR: In this paper, two simple heuristic algorithms for scheduling to minimize makespan in the constrained (or no-wait) flow shop are presented, and evaluated over a large number of problems of various sizes.

TL;DR: This paper reviews some of the recent developments in the design and application of performance measurement systems and introduces four approaches, which in different ways, seek to integrate performance measures.

TL;DR: In this paper, a probabilistic time-scheduling model for an exponentially decaying inventory was developed for an exponential decaying inventory when the supplier offers some credit period T ∗ for settling the accounts for the purchase quantity The credit period is known constant Mathematical models were derived for both the cases (i) T∗ ⩽ T and (ii) T ∆ > T Expressions are derived for the total average expected cost of the system, the optimum cycle time and the time for obtaining optimum order levels, S = S 0, under each case under each

TL;DR: In this paper, the authors discuss some possible approaches to the problem and describe the experience of setting up a system to collect such data in a major UK company and the potential uses of such a database.

TL;DR: In this paper, the authors surveyed some of the largest "Fortune 500" industrial and service corporations about their use of various project evaluation techniques to determine the feasibility and profitability of a project and found that 97% of the surveyed companies use NPV, as opposed to only 52% in the 1978 AACE survey.

TL;DR: An efficient algorithm is developed to compute the optimal or near optimal batch sizes for both manufacturing and raw material ordering policies, and results and computational complexity of the problem are discussed.

TL;DR: The proposed dispatching rule adapts itself to the variation in the shop floor utilization level and assigns appropriate weights to the process time and due date information accordingly and is found to perform quite well with respect to mean flow time, mean tardiness and variation in tardy.

TL;DR: The simulated annealing algorithm which has now become a very useful tool in solving a variety of combinatorial optimization problems is made use of here and solutions obtained using the proposed algorithm compare favourably with the best known results.

TL;DR: In this paper, the authors developed two LP models for rough-cut capacity planning which can be used to adjust dynamically the parameters of BORA to the capacity load, and the simulation results show improvements compared to a standard application using'standard' parameter values.

TL;DR: It is concluded that simple cost-based ratios appear to be the most suitable for situations where pricing structures for resources and services are uniform and known, such as for company internal benchmarking.

TL;DR: This paper demonstrates the simultaneous application of the following four instruments belonging to different planning levels: variation of monthly working time, overtime, employment of floaters and leasing of work force.

TL;DR: In this article, the authors considered a continuous review inventory control system with fixed reorder point r and constant order quantity Q. Demands are assumed to be generated by a Poisson process with one unit demanded at a time.

TL;DR: A network architecture is proposed by which the expected cost of six major types of assembly systems is estimated and the performances of the network are compared to those of a regression model commonly used for cost estimation.

TL;DR: A study of the inventory, lead time and delivery promise data from the Global Manufacturing Research Group showed that manufacturing lead time increases as work-in-process inventory increases, as theory suggests as discussed by the authors.

TL;DR: In this article, the authors identify weaknesses of traditional approaches to capacity planning and suggest a number of remedies to improve due date observance and shortening delivery times, and suggest theoretical and/or practical changes in the following seven areas.

TL;DR: The origins of the increasing complexity of the scheduling problems of several companies in the process industry producing dairy products, pharmaceutical products, tobacco, paint, chocolate products, and foods are investigated and compared.

TL;DR: In this article, the authors discuss how such a decision process might be designed and managed and give examples from research within the electronics industries of the development of decision support tools using analytical hierarchical programming (AHP).

TL;DR: A procedure is presented for the selection of the best unit load sizes for all part types manufactured in a shop that employs AGVs for handling, modeled as a mathematical program and solved by a hybrid algorithm that includes numerical search, computer simulation, and statistical analysis.

TL;DR: A stockroom experiment to assess the causes of inventory record errors in a manufacturing setting indicated that the following variables influenced inventory record accuracy: unit value, weigh-counting, quantity on-hand, dollar value of the stock on- hand, number of places the part was used, and the stockroom staff's rating of the error likelihood for a part.

TL;DR: In this paper, the problem of selecting optimal target values for the mean of the quantity Y of material in a container and the cutoff value on a correlated variable X is considered for a filling process in which a container is nonconforming if its Y value is less than the lower specification limit and inspection is based on X instead of Y.

TL;DR: Results indicate that horizon extension is worthwhile for relatively large forecast errors and improves the Wagner-Whitin in more instances than previous research has indicated.

TL;DR: A heuristic procedure is presented for the problem of sequencing a given set of retrieval requests in a man-on-board storage and retrieval warehousing system suitable for storing items of small size and light weight.

TL;DR: A cost estimating methodology for the manufacture of wire harnesses is presented and it is shown that parts or manufacturing methods that are costly can be detected early and changes to the design can be effected.

TL;DR: In this article, measures for characterizing different types of planning stability in material-coordination systems are suggested and applied to analyze the stability performance of (s, nQ)-and (S, S)-policies for a single-stage system simulated in a rolling horizon environment.