Forthcoming articles

 


International Journal of Advanced Operations Management

 

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International Journal of Advanced Operations Management (12 papers in press)

 

Regular Issues

 

  • A TOPSIS, VIKOR and DEA Integrated Evaluation Method with BELIEF Structure under Uncertainty to Rank Alternatives   Order a copy of this article
    by Amir Amini, Alireza Alinezhad, Fahimeh Yazdipoor 
    Abstract: Across diverse science branches and fields multi-criteria decision making (MCDM) methods have received much attention from researchers and practitioners in evaluating, assessing and ranking alternatives as a sub-discipline and full-grown branch of operations research. This study proposes a combined method, based on a new compromised solution method and data envelopment analysis (DEA) to evaluate the efficiency of decision-making units (DMUs). By using the technique for order of preference by similarity to ideal solution (TOPSIS) and VIKOR method, in the new compromised programming approach two concepts are considered simultaneously. First, the optimal alternative is closer to positive ideal solution (PIS) and farther from negative ideal solution (NIS). Second, the proposed method provides a maximum group utility for the majority and a minimum of an individual regret for the opponent. In this method weight of efficiency witch obtained from new compromised solution method is multiplied by the weight of CCR model of DEA. The problem involves BELIEF parameters in the solution procedure. Thus, the new proposed method that applied the advantages of TOPSIS, VIKOR and DEA and belief structure simultaneously was used as a group decision making problem to exploit many experts judgments. Finally, to illustrate the proposed method, an illustrative example is provided.
    Keywords: TOPSIS; VIKOR; DEA; Compromised Solution Method; Belief Structure.

  • Exploring the relationships between continuous improvement and predictive analytics   Order a copy of this article
    by Lanndon Ocampo, Brian Galli 
    Abstract: This study aimed to examine the elements and applications of Predictive Analytics (PA) models within the field of Continuous Improvement (CI). While the roles of data science, PA, and Big Data have been explored in the current literature (e.g., supply chain management), fragmented insights scarcely exist concerning the role of PA on CI initiatives. Articles concerning the role of PA and BI in CI projects were utilized in a systematic literature review. Furthermore, the paper stresses the vital role that Big Data Analytics plays in both CI and PA during decision-making. The paper studies other important CI and PA aspects that pertain to Continuous Improvement projects, which are aspects that are often overlooked in the existing literature. The findings from this study emphasize the critical role that PA tools and concepts can and should have in CI initiatives. Critical organizational and operational structures also need to be implemented to establish and maintain the use of PA tools and concepts in CI initiatives. Overall, this paper serves to fill the gap that overlooks the relationship between these two variables.
    Keywords: Data; Predictive Analytics; Continuous Improvement; Business Intelligence; Big Data.

  • Time-Cost Trade-off in a Multi index Bi-criteria Fixed Charge Transportation Problem   Order a copy of this article
    by Sungeeta Singh, Renu Tuli, Deepali Sarode 
    Abstract: This paper is motivated by the necessity of finding efficient time-cost trade-off pairs for Multi Index Bi-criteria Fixed Charge Transportation Problem (MIBCFCTP) where the time criteria assumes greater significance than the cost criteria and is therefore minimized first. An algorithm is developed to find the time-cost trade-off pairs for the MIBCFCTP. So far no study on time-cost pairs of MIBCFCTP has been undertaken, a gap which the proposed algorithm aims to fulfil. Results of a numerical illustration are obtained by the proposed algorithm by extended Vogels approximation Method. Although the proposed algorithm follows a completely different approach than the existing methods of finding cost-time trade off pairs for the MIBCFCTP, however both being optimization methods their optimal solutions are comparable and it is observed that the proposed algorithm is a better alternative in MIBCFCTPs if time minimization holds priority over cost minimization.\r\n\r\n
    Keywords: Multi Index transportation problem; time-cost trade-off pair; fixed charge.

  • OPTIMIZING THE FINANCIAL PERFORMANCE OF SUPPLY CHAIN A CASE STUDY   Order a copy of this article
    by Saleeshya P.G, Vinayak Rajan, Nigil Premkumar 
    Abstract: This paper is an outcome of a study carried out in a brake manufacturing company in India. Based on the literature review, field study and industry study, we have identified various enablers of financial supply chain. The objective of this paper is to strengthen the financial supply chain by eliminating the non-value added elements, optimizing the inventory levels and finally reducing the rejection level of poor quality products by ranking them according to their severity of defects. By identifying these factors and forces, an organization can channel its resources in the most effective way in order to enhance the achievement potential of its various performance indicators.Value Stream Mapping has been used to eliminate the non-value added processes and thereby helped the company to reduce the production lead-time.The 0-1 Knapsack methodology enabled us to optimize the value of goods flowing through the processes, with outputs showing a commendable increase in the financial chain of the process. Data Envelopment Analysis provides an insight into what the important indices must be, so that each step in the inspection process carried out is made efficient, thereby minimizing the rejection levels.
    Keywords: Supply Chain Management; Financial Supply Chain; Value Stream Mapping; Inventory Analysis; Knapsack Methodology; Data Envelopment Analysis.

  • The Design of a Knowledge-based System for Quality Management in Healthcare: Case Study   Order a copy of this article
    by Yousuf Al Khamisi, Mohammed Khurshid Khan, Edurardu Munive-Hernandez 
    Abstract: The current healthcare systems have numerous gaps that need to be filled to reach the best practice. Healthcare organizations have used different Quality Management (QM) tools to monitor and control its services. This paper presents a novel approach to design and validate a hybrid Knowledge-Based System (KBS) to evaluate QM of healthcare Environment (QMHE) using a hybrid system that has not been used before. The proposed system will be combined with Gauge Absence Perquisite (GAP) method to sustain a successful operation of the large number of Key Performance Indicators (KPIs) that involved in QMHE and to detect the gap between each KPI and the anticipated point. Employment of KB system offers the chance to deal with users in an appropriate way and to support in the decision-making process. Moreover, by including instructive features, the KB system can be used as a learning device for quality managers in healthcare organizations. It firstly focuses on the KB components, followed by the GAP methodology and then the application of the KB-QMHE at a tertiary hospital in Oman. Finally, a summary of the complete KB-QMHE outcomes of its application there is shown. The system will support the healthcare governance to enhance the patient safety culture and QM efficiency. Out of 354 KB rules answered, the system has categorised 225 as GPs and the remaining 128 as BPs. The 128 bad points are categorised into different problem categories (20 PC-1, 34 PC-2, 34 PC-3, 40 PC-4, and 0 PC-5) where they represent the actions that need to be enhanced to reach the desired level of quality management.
    Keywords: Knowledge based (KB) – Gauging Absence of Pre-requisite (GAP) - Quality Management in Healthcare (QMHC) - Expert System (ES).

Special Issue on: Lean, Agile, Resilient and Green Supply Chain Management

  • Trade-off among lean, agile, resilient and green paradigms: An empirical study on pharmaceutical industry in Jordan using a TOPSIS-Entropy Method   Order a copy of this article
    by Moutaz Alazab 
    Abstract: This study proposes an integrated multi-criteria decision analysis method (MCDM) to analyze trade-offs among different supply chain management (SCM) paradigms associated with competitive priorities. The study employs the entropy method to derive the alternative weights of the evaluation criteria. The study also employs the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to rank feasible alternatives in order of preference, and then measure trade-offs among the conflicting objectives. A sensitivity analysis is performed to confirm the robustness of the proposed model. An empirical study approach is used to identify the trade-offs in the pharmaceutical supply chains context. The results indicate that the TOPSIS and entropy methods can be utilized in a multi-decision analysis process in which SCM paradigms should be implemented in order to positively influence the competitive position. The findings also reveal that competitive priorities differ between each paradigm. For the pharmaceutical industry of Jordan, the sequence of competitive priorities that arise from this study is thus: first quality should be developed, then know-how, flexibility , delivery, customer focus, innovation, and finally, cost. This finding represents that, the competitive priority that is most affected by the SCM paradigms is the 'quality' priority.
    Keywords: Trade-offs; Supply Chain Management Paradigms; Entropy Weight; TOPSIS Method; Competitive Priorities.

  • Enhancing stock efficiency and environmental sustainability goals in direct distribution logistic networks   Order a copy of this article
    by Marco Bortolini, Francesco Gabriele Galizia, Mauro Gamberi, Cristina Mora, Francesco Pilati 
    Abstract: In modern business, industrial companies embrace lean philosophy to increase their efficiency moving toward the so-called continuous improvement of industrial processes. In parallel, according to the international regulations and stakeholder pressures, rising attention is toward sustainable environmental, i.e. green, practices. A relevant scientific area addresses the topic of matching Lean Management (LM) and Green Management (GM) principles within logistics, from a quantitative and optimised perspective. This paper follows this stream and proposes a bi-objective model optimising stock efficiency and environmental sustainability in the design of direct distribution logistic networks. The former goal belongs to LM, the latter belongs to GM. The model application to an Italian case study showcases its benefit reducing the average stock without a relevant increase of the emissions due to frequent replenishments. A cost analysis of the results completes this paper to include the economic dimension within the study boundaries.
    Keywords: Environmental sustainability; Green supply chain; Lean thinking; Supply chain management; Distribution logistic network design; Stock efficiency; Bi-objective optimisation.

  • The effect of IT integration on improving Agility, Integration and performance of supply chain   Order a copy of this article
    by Reza Samizadeh, Saedeh Aghagoli, Sahar Vatankhah 
    Abstract: In recent decades, companies have been trying to use various methods and means to meet customers needs quickly in order to survive in competitive market and gain more profit. To reach this purpose, information technology has acted as an enabler in different parts of the supply chain and companies. Although there is a wide range of researches investigating the role of IT on supply chain performance (SCP), the literature review has have many gaps. The contribution of this work in comparison with previous models is the impact of studies simultaneously (1) IT integration and (2) agility and integration on the performance which has not studied until now. This study proposed a new conceptual model to analyse the direct and indirect effect of these items on each other. In addition, a discussion about integrity and agility of the supply chain is a new issue in the Iranian market, which has recently attracted managers in order to maintain and increase their market share. In this research, Collected data from a sample of 163 Iranian auto parts companies were analysed using structural equation modelling and the weight of hypotheses in final model were determined by using a minimum square error of the model in the smart PLS. Results of the analysis show that IT integration increases the integrity and agility of the supply chain directly and improves SCP indirectly by affecting agility and integrity of the supply chain.
    Keywords: Keywords: IT integration; supply chain; agility; integrity; performance.

  • Improvement of steel melting operations at a Caribbean company: a lean manufacturing approach   Order a copy of this article
    by Boppana Veeraiah Chowdary, Christopher Fullerton 
    Abstract: Employing the LM approach entrench stringent quality procedures into the steel manufacturing process for continuous improvement of various key areas such as cost, quality, health, safety and environment. The purpose of this paper is to examine the effects of deploying lean manufacturing (LM) techniques in a Caribbean steel manufacturing firm. To conduct the study, a comprehensive review of literature was performed. The problem faced at the company was analysed using value stream mapping in conjunction with 5-why and fishbone quality tools. Then improvements in steel melting operations were shown with the application of lean tools. Finally, future state value stream map was developed and the study results were validated. The study guided the company for improvement of various shop measures. In this regard it was shown that the lead time can be reduced by 37%, reduction in processing time by 7.5% and reduction in work- in-process by (71%). A careful scrutiny of available literature on the subject indicate that the application of LM strategies in the Caribbean steel sector has not been explored adequately. Thus, the case study not only provides a road map for similar manufacturing companies elsewhere to achieve operational improvement but it is also valuable for academic community to gain insights into the practicality of the proposed LM strategies. However, the research findings are based on a single case study and results have been validated by simulation.
    Keywords: Steel melting; Lean manufacturing; 5S; 5-why; Value stream mapping; Setup reduction; Production Smoothing; Total Productive Maintenance.

  • Which Practices are Lean, Agile and Resilient? Literature Review and Practitioners Perspective   Order a copy of this article
    by Maryam Lotfi 
    Abstract: The need to be lean in terms of cost effectiveness, agile in terms of customer responsiveness and resilient in terms of being aware of risks and becoming ready to encounter them and passing them in the best way possible, is an undeniable issue in the supply chain. While the three concepts seem to overlap, they also have some distinct parts and this causes the confusion presented both in the literature and practice. The purpose is then to clarify the boundaries of the three concepts to reduce this confusion. The research is empirical. Survey data were collected from 185 companies from different industries in Germany. In line with literature, this empirical research shows that there are some practices that purely affect leanness, agility or resilience and there are other practices that affect leanness and agility both, agility and resilience both and finally the three of leanness, agility and resilience.
    Keywords: Resilience; Leanness; Agility; Supply Chain Management.

  • Green optimization for LRP problem using a genetic algorithm and a dynamic island model   Order a copy of this article
    by ZINEB BENOTMANE 
    Abstract: It has grown quite conspicuous that no company is immune to the increase in fuel prices and energy sources used for air conditioning, refrigeration and heating, as well as traffic congestion and the degradation of road infrastructures. It is for this reason that companies are increasingly concerned about energy and environmental issues and are, therefore, more aware of the need to revise their logistics for the purpose of reducing costs and increasing competitiveness. In order to minimize the energy costs associated with transportation, it is sensical to consider a two-echelon location routing problem (2E-LRP) where two distribution levels are composed of three disjoint sets of nodes corresponding to the depots, the distribution centres and the customers, respectively. For this, we propose a mathematical model, a genetic algorithm, and a dynamic island model to optimize the assignment and the routing of freight. Eventual results show a minimization of energy cost and CO2 rate.
    Keywords: Genetic Algorithm; Dynamic Island Model; Optimization; LRP Problem; Green Supply Chain; Two-echelon Transportation.

  • Exploring Ecosystem Network Analysis to Balance Resilience and Performance in Sustainable Supply Chain Design   Order a copy of this article
    by Vitor De Souza, Jacqueline Bloemhof-Ruwaard, Milton Borsato 
    Abstract: Sustainable Supply Chain Design can be performed using optimization strategies for minimizing environmental impacts while maximizing profit. It is not clear how such strategies influence the resilience of a supply chain its ability to cope with disruptions without compromising its function. This research used the Ecosystem Network Analysis (ENA), a model from Ecological Economics, to evaluate the resilience during the design of a sugar beet supply chain. The Ɛ-constraint method was used to solve a multi-objective, mixed-integer linear programming model (MOMILP). Results showed that ENA results are compromised when the strategy of minimizing environmental impacts is used, due to the increased fragility of the configuration, compared with the configuration from the profit maximization strategy. Sensitivity analysis also revealed that, when the number of facilities is increased, ENA results improve while profit is decreased. ENA showed an interesting potential to support the pursuit of balance between resilience and performance, bringing insights during early design stages.
    Keywords: resilience; ecosystem network analysis; sustainable supply chain; multi-objective programming.