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Growing Science » International Journal of Industrial Engineering Computations

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Sort articles by: Volume | Date | Most Rates | Most Views | Reviews | Alphabet
1.

Harvesting and transport operations to optimise biomass supply chain and industrial biorefinery processes Pages 265-288 Right click to download the paper Download PDF

Authors: Robert Matindi, Mahmoud Masoud, Phil Hobson, Geoff Kent, Shi Qiang Liu

DOI: 10.5267/j.ijiec.2017.9.001

Keywords: Bio-refinery, Cane transport, Cane harvesting, Constraint programming

Abstract:
In Australia, Bioenergy plays an important role in modern power systems, where many biomass resources provide greenhouse gas neutral and electricity at a variety of scales. By 2050, the Biomass energy is projected to have a 40-50 % share as an alternative source of energy. In addition to conversion of biomass, barriers and uncertainties in the production, supply may hinder biomass energy development. The sugarcane is an essential ingredient in the production of Bioenergy, across the whole spectrum ranging from the first generation to second generation, e.g., production of energy from the lignocellulosic component of the sugarcane initially regarded as waste (bagasse and cane residue). Sustainable recovery of the Lignocellulosic component of sugarcane from the field through a structured process is largely unknown and associated with high capital outlay that have stifled the growth of bioenergy sector. In this context, this paper develops a new scheduler to optimise the recovery of lignocellulosic component of sugarcane and cane, transport and harvest systems with reducing the associated costs and operational time. An Optimisation Algorithm called Limited Discrepancy Search has been adapted and integrated with the developed scheduling transport algorithms. The developed algorithms are formulated and coded by Optimization Programming Language (OPL) to obtain the optimised cane and cane residues transport schedules. Computational experiments demonstrate that high-quality solutions are obtainable for industry-scale instances. To provide insightful decisions, sensitivity analysis is conducted in terms of different scenarios and criteria.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 2583 | Reviews: 0

 
2.

A two-agent scheduling problem in a two-machine flowshop Pages 289-306 Right click to download the paper Download PDF

Authors: Mohammad-Hasan Ahmadi-Darani, Ghasem Moslehi, Mohammad Reisi-Nafchi

DOI: 10.5267/j.ijiec.2017.8.005

Keywords: Scheduling, Flowshop, Two-agent, Mathematical programming, Tabu search

Abstract:
In recent years, many studies on the multi-agent scheduling problems in which agents compete for using the shared resources, have been performed. However, relatively few studies have been undertaken in the field of the multi-agent scheduling in a flowshop environment. To bridge the gap, this paper aims at addressing the two-agent scheduling problem in a two-machine flowshop. Because of the importance of delay penalties and efficient resource utilization in many manufacturing environments, the objective is to find an optimal schedule which has the minimum total tardiness for the first agent’s jobs, under the makespan limitation for the second agent. Since this problem is strongly NP-hard, several theorems and properties of the problem are proposed to apply in exact and meta-heuristic methods. Also, for some instances of the problem for which exact methods cannot achieve optimal solutions in a reasonable amount of time, a tabu search algorithm is developed to achieve near-optimal solutions. Computational results of the tabu search algorithm show that the average absolute error value is lower than 0.18 percent for instances with 20 to 60 jobs in size.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 2228 | Reviews: 0

 
3.

A simulated annealing algorithm for unequal area dynamic facility layout problems with flexible bay structure Pages 307-330 Right click to download the paper Download PDF

Authors: Irappa Basappa Hunagund, V. Madhusudanan Pillai, U.N. Kempaiah

DOI: 10.5267/j.ijiec.2017.8.004

Keywords: Unequal area dynamic facility layout problems, Flexible bays, Simulated annealing, Adaptive strategy

Abstract:
In this article, we propose Simulated Annealing (SA) heuristic to solve Unequal Area Dynamic Facility Layout Problem (FBS) with Flexible Bay Structure (UA-DFLPs with FBS). The UA-DFLP with FBS is the problem of determining the facilities dimension and their location coordinates with flexible bays formation in the layout for various periods of the planning horizon. The UA-DFLP with FBS is more constrained than general UA-DFLP and it is an NP-complete problem. The proposed SA is tested with the available UA-DFLPs instances in the literature. The proposed SA heuristic has given new best solution or the same solution for FBS based problems as compared with the best-known reported in the UA-DFLPs with FBS literature. The proposed SA heuristic is also tested on standard UA-DFLPs used in non-FBS approaches. The SA heuristic solution is not significantly different from the best solution reported in the literature for non-FBS approaches. Equal area DFLP instances are also solved with the proposed SA and the results obtained are promising with the solutions reported in the literature. Hence the results obtained indicate that the proposed SA for UA-DFLP with FBS is effective and versatile for both equal and unequal area dynamic facility layout problems. The computational efficiency of the proposed SA heuristic is very much competitive as compared to other meta-heuristics computational timings reported in the literature.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 2934 | Reviews: 0

 
4.

Single machine batch processing problem with release dates to minimize total completion time Pages 331-348 Right click to download the paper Download PDF

Authors: Pedram Beldar, Antonio Costa

DOI: 10.5267/j.ijiec.2017.8.003

Keywords: Minimization of total completion time, Batch processing, Single machine scheduling, Mathematical programming, Scheduling with release dates

Abstract:
A single machine batch processing problem with release dates to minimize the total completion time (1|rj,batch|Σ Cj ) is investigated in this research. An original mixed integer linear programming (MILP) model is proposed to optimally solve the problem. Since the research problem at hand is shown to be NP-hard, several different meta-heuristic algorithms based on tabu search (TS) and particle swarm optimization (PSO) are used to solve the problem. To find the most performing heuristic optimization technique, a set of test cases ranging in size (small, medium, and large) are randomly generated and solved by the proposed meta-heuristic algorithms. An extended comparison analysis is carried out and the outperformance of a hybrid meta-heuristic technique properly combining PSO and genetic algorithm (PSO-GA) is statistically demonstrated.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 2727 | Reviews: 0

 
5.

Estimation and optimization of flank wear and tool lifespan in finish turning of AISI 304 stainless steel using desirability function approach Pages 349-368 Right click to download the paper Download PDF

Authors: Lakhdar Bouzid, Sofiane Berkani, Mohamed Athmane Yallese, Frençois Girardin, Tarek Mabrouki

DOI: 10.5267/j.ijiec.2017.8.002

Keywords: Flank wear, Surface roughness, Lifespan, Modeling, DFA, Optimization

Abstract:
The wear of cutting tools remains a major obstacle. The effects of wear are not only antagonistic at the lifespan and productivity, but also harmful with the surface quality. The present work deals with some machinability studies on flank wear, surface roughness, and lifespan in finish turning of AISI 304 stainless steel using multilayer Ti(C,N)/Al2O3/TiN coated carbide inserts. The machining experiments are conducted based on the response surface methodology (RSM). Combined effects of three cutting parameters, namely cutting speed, feed rate and cutting time on the two performance outputs (i.e. VB and Ra), and combined effects of two cutting parameters, namely cutting speed and feed rate on lifespan (T), are explored employing the analysis of variance (ANOVA). The relationship between the variables and the technological parameters is determined using a quadratic regression model and optimal cutting conditions for each performance level are established through desirability function approach (DFA) optimization. The results show that the flank wear is influenced principally by the cutting time and in the second level by the cutting speed. In addition, it is indicated that the cutting time is the dominant factor affecting workpiece surface roughness followed by feed rate, while lifespan is influenced by cutting speed. The optimum level of input parameters for composite desirability was found Vc1-f1-t1 for VB, Ra and Vc1-f1 for T, with a maximum percentage of error 6.38%.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 2622 | Reviews: 0

 
6.

A hybrid expert system, clustering and ant colony optimization approach for scheduling and routing problem in courier services Pages 369-396 Right click to download the paper Download PDF

Authors: Eduyn López-Santana, William Camilo Rodríguez-Vásquez, Germán Méndez-Giraldo

DOI: 10.5267/j.ijiec.2017.8.001

Keywords: Courier services, Clustering, Expert system, Routing, Scheduling

Abstract:
This paper focuses on the problem of scheduling and routing workers in a courier service to deliver packages for a set of geographically distributed customers and, on a specific date and time window. The crew of workers has a limited capacity and a time window that represents their labor length. The problem deals with a combination of multiples variants of the vehicle routing problem as capacity, multiple periods, time windows, due dates and distance as constraints. Since in the courier services the demands could be of hundreds or thousands of packages to be delivered, the problem is computationally unmanageable. We present a three-phase solution approach. In the first phase, a scheduling model determines the visit date for each customer in the planning horizon by considering the release date, due date to visit and travel times. We use an expert system based on the know-how of the courier service, which uses an inference engine that works as a rule interpreter. In the second phase, a clustering model assigns, for each period, customers to workers according to the travel times, maximum load capacity and customer’s time windows. We use a centroid based and sweep algorithms to solve the resulted problem. Finally, in the third phase, a routing model finds the order in which each worker will visit all customers taking into account their time windows and worker’s available time. To solve the routing problem we use an Ant Colony Optimization metaheuristic. We present some numerical results using a case study, in which the proposed method of this paper finds better results in comparison with the current method used in the case study.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 3252 | Reviews: 0

 
7.

Optimal appointment scheduling with a stochastic server: Simulation based K-steps look-ahead selection method Pages 397-408 Right click to download the paper Download PDF

Authors: Changchun Liu, Xi Xiang

DOI: 10.5267/j.ijiec.2017.7.002

Keywords: Appointment scheduling, Heuristics, Utility functions, Simulation, K-steps look-ahead selection

Abstract:
This paper studies the problem of scheduling a finite set of customers with stochastic service times for a single-server system. The objective is to minimize the waiting time of customers, the idle time of the server, and the lateness of the schedule. Because of the NP-hardness of the problem, the optimal schedule is notoriously hard to derive with reasonable computation times. Therefore, we develop a simulation based K-steps look-ahead selection method which can result in nearly optimal schedules within reasonable computation times. Furthermore, we study the different distributed service times, e.g., Exponential, Weibull and lognormal distribution and the results show that the proposed algorithm can obtain better results than the lag order approximation method proposed by Vink et al. (2015) [Vink, W., Kuiper, A., Kemper, B., & Bhulai, S. (2015). Optimal appointment scheduling in continuous time: The lag order approximation method. European Journal of Operational Research, 240(1), 213-219.]. Finally, a realistic appointment scheduling includes experiments to verify the good performance of the proposed method.
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Journal: IJIEC | Year: 2018 | Volume: 9 | Issue: 3 | Views: 1668 | Reviews: 0

 

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