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Article
Publication date: 24 February 2022

Dwi Agustina Kurniawati, Asfin Handoko, Rajesh Piplani and Rianna Rosdiahti

This paper aims to optimize the halal product distribution by minimizing the transportation cost while ensuring halal integrity of the product. The problem is considered as a…

Abstract

Purpose

This paper aims to optimize the halal product distribution by minimizing the transportation cost while ensuring halal integrity of the product. The problem is considered as a capacitated vehicle routing problem (CVRP), based on the assumption that two different types of vehicles are used for distribution: vehicles dedicated for halal product distribution and vehicles dedicated for nonhalal products distribution. The problem is modeled as an integer linear program (ILP), termed CVRP-halal and nonhalal products distribution (CVRP-HNPD). It is solved using tabu-search (TS)-based algorithm and is suitable for application to real-life sized halal product distribution.

Design/methodology/approach

Two approaches are used in solving the problem: exact approach (integer-linear program) and approximate approach (TS). First, the problem is modeled as ILP and solved using CPLEX Solver. To solve life-sized problems, a TS-based algorithm is developed and run using MATLAB.

Findings

The experiments on numerical data and life-sized instances validate the proposed model and algorithm and show that cost-minimizing routes for HNPD are developed while ensuring the halal integrity of the products.

Practical implications

The proposed model and algorithm are suitable as decision support tools for managers responsible for distribution of halal products as they facilitate the development of minimum cost distribution routes for halal and nonhalal products while maintaining the integrity of halal products. The model and algorithm provide a low transportation cost strategy at the operational level of halal products distribution while fulfilling the halal logistics requirement.

Originality/value

To the best of the author’s knowledge, this is the first study that specifically deals with the CVRP of halal products distribution by proposing CVRP-HNPD model and TS-CVRP-HNPD algorithm. The proposed model and algorithm ensure the integrity of halal products along the distribution chain, from the warehouse (distribution center) to the retailer, while achieving lowest transportation cost.

Details

Journal of Islamic Marketing, vol. 14 no. 4
Type: Research Article
ISSN: 1759-0833

Keywords

Article
Publication date: 1 March 2004

Rajesh Piplani, Shaligram Pokharel and Albert Tan

The use of information technology (IT) in the logistics area is growing all over the world and so is the number of third party logistics providers. In this article a specific case…

3150

Abstract

The use of information technology (IT) in the logistics area is growing all over the world and so is the number of third party logistics providers. In this article a specific case of interrelation between the uses of IT at the third party logistics service providers (3PLs) in Singapore is highlighted. Information collected through a randomly selected sample of 3PLs indicates that more and more service providers are either planning to incorporate IT in their operations or are benefiting from their use. Towards this end, the providers are acquiring new knowledge, skills and technologies. The survey results showed that respondents are also concerned about their investments in IT as they feel that with rapidly changing technology, their equipment, skill and processes could become obsolete before any tangible benefits could be derived from them. The providers indicate that financial justification is another key barrier to full‐scale IT implementation. These constraints hinder the implementation of strategic IT projects, which require significant investments. Therefore, a package program for skill development and equipment incentive could be initiated for 3PLs in Singapore.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 16 no. 1
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 September 2005

Rajesh Piplani and Yonghui Fu

A traditional supply chain, all too often, is a sequence of weakly connected activities both within and outside the organization and leads to many misalignments. Tackling this…

6147

Abstract

Purpose

A traditional supply chain, all too often, is a sequence of weakly connected activities both within and outside the organization and leads to many misalignments. Tackling this inherent lack of coordination is a major value creation opportunity for supply chain managers. This paper aims to present a coordination framework, called ASCEND, to align the inventory decisions in decentralized supply chains.

Design/methodology/approach

The framework rests on three pillars – multi‐agent technology, coordination theory, and optimization technology. Inventory alignment is transformed into a decentralized constraint satisfaction optimization problem, which is then solved using a genetic algorithm‐based coordination process. The guiding principle of this framework is the establishment of a proper incentive alignment mechanism through cost‐sharing and service level contracts, taking into account the associated dependencies.

Findings

The results of the pilot study indicate that the coordination framework reduces the supply chain inventory‐holding cost, compared with the “as‐is” scenario. Interestingly, the results also indicate that not all the supply chain partners will experience lower inventory costs in the absence of a proper incentive alignment mechanism. Only through cost sharing and service level contracts can the value of coordination be realized by each partner in a supply chain network!

Practical implications

The coordination approach is applied to a pilot supply chain. The results of the case study lead to 10.4 percent (average) reduction in supply chain inventory‐holding costs, validating the efficacy of the coordination framework.

Originality/value

This research has resulted in the development of a supply chain coordination framework, which requires the establishment of a proper incentive alignment mechanism, based on cost‐sharing and service level contracts, and taking into account the associated dependencies.

Details

Journal of Manufacturing Technology Management, vol. 16 no. 6
Type: Research Article
ISSN: 1741-038X

Keywords

Article
Publication date: 1 August 2003

Woon Kian Ng, Rajesh Piplani and S. Viswanathan

End‐user demand information suffers from delay and distortion as it moves upstream in a supply chain. Co‐ordination between organisations in the supply chain, through sharing of…

1870

Abstract

End‐user demand information suffers from delay and distortion as it moves upstream in a supply chain. Co‐ordination between organisations in the supply chain, through sharing of demand information, is a possible solution to counter this distortion. Modelling and analysing supply chains, however, is not an easy task, as the supply chains contain multiple echelons and are faced with uncertain demand and lead‐times. For multi‐echelon supply chains adopting different inventory and forecasting policies at the echelon level, simulation is the most appropriate analysis tool. In this paper, we describe the development of a simulation workbench for modelling and analysing multi‐echelon supply chains. The workbench facilitates study of inventory and forecasting policies practised by the echelons, and models different information exchange mechanisms adopted by them. An experiment conducted, to test the workbench and demonstrate its capabilities, confirms that the workbench is a useful tool for gaining valuable insights into information exchange in a particular supply chain.

Details

Integrated Manufacturing Systems, vol. 14 no. 5
Type: Research Article
ISSN: 0957-6061

Keywords

Article
Publication date: 1 October 2004

Rajesh Piplani and Sen Ann Puah

Production planning using simulation has been gaining popularity as manufacturing routings become more complicated. However, a detailed simulation model that contains hundreds of…

Abstract

Production planning using simulation has been gaining popularity as manufacturing routings become more complicated. However, a detailed simulation model that contains hundreds of machines and thousands of operations is far too large and complex to work with. The thesis in this research is that production planners at plant level do not need to see all the details of the shop floor to develop an effective production plan. Simulation model used for production planning can be simplified to ensure maintainability and manageability of the model. Model simplification is done in two stages, namely aggregation and condensation. Model aggregation reduces the number of routings in the model by using representative flows, whereas model condensation reduces the number of elements in a model by eliminating high throughput rate workstations. Both strategies reduce the complexity of a simulation model without sacrificing its accuracy. Experimental results using real‐life data indicate that the simplified model is a valid representation of the detailed model, and can be used for high level production planning. t‐Tests are used to compare the results of the detailed and simplified simulation model. Finally, rules of thumb are developed to standardize the simplification strategy.

Details

Journal of Manufacturing Technology Management, vol. 15 no. 7
Type: Research Article
ISSN: 1741-038X

Keywords

Article
Publication date: 1 April 2001

Rajesh Piplani and Norma Faris Hubele

Pattern recognition applied to control charts centers around the development and assessment of automated algorithms for detecting non‐random or unnatural patterns in observations…

Abstract

Pattern recognition applied to control charts centers around the development and assessment of automated algorithms for detecting non‐random or unnatural patterns in observations collected from a production process. The work presented here marks the first examination of enhancements to an existing algorithm, of investigations into sensitivity analysis issues, of development of standard performance metrics, and of a comparative performance with the traditional Western Electric Run tests. The simulation results of the research presented here indicate that the modified algorithm performs markedly better than the original algorithm, is only slightly sensitive to the selection of the user specified algorithm parameters, and competes favorably with the Western Electric Run Tests especially when detecting repetitive patterns like cycles.

Details

International Journal of Quality & Reliability Management, vol. 18 no. 3
Type: Research Article
ISSN: 0265-671X

Keywords

Content available
Article
Publication date: 23 October 2009

1192

Abstract

Details

Journal of Manufacturing Technology Management, vol. 20 no. 8
Type: Research Article
ISSN: 1741-038X

Article
Publication date: 7 August 2017

Balkrishna Eknath Narkhede, Rakesh Raut, Bhaskar Gardas, Huynh Trung Luong and Manoj Jha

The concept of third-party logistics service provider (3PLSP) has been considered as an essential organizational philosophy to achieve profits. The purpose of this paper is to…

1744

Abstract

Purpose

The concept of third-party logistics service provider (3PLSP) has been considered as an essential organizational philosophy to achieve profits. The purpose of this paper is to analyze and examine the contextual relationship among the critical success factors (CSF) of 3PLSPs practices in the cement manufacturing industry.

Design/methodology/approach

In this paper, the total 20 critical selection criteria with nine processes for the 3PLSPs, of an Indian cement manufacturing industry have been identified through an exhaustive literature review and opinions of the experts i.e. academics and industries. Interpretive ranking process (IRP) methodology has been presented to find out the rankings of the individual criteria and the mutual influence in the selection process.

Findings

The proposed model establishes the dominance of relationship among identified criteria, which plays a vital role in the 3PLSPs selection process which are experience in similar product, quality of management, information technology capacity, flexibility in operation and delivery, compatibility with the users.

Research limitations/implications

An empirical research approach has not been used to collect primary data to rank different criteria for effective 3PLSPs implementation in the Industry. In this paper, an example of Indian cement industry is presented to show the real world applicability of the proposed model.

Originality/value

This model would help a decision maker to decide the issues related to a selection of 3PLSPs. The third party service provider comprises the use of external companies who controls and delivers logistic activities. The paper discusses very practical issues in an analytical manner, using the case base method.

Details

Benchmarking: An International Journal, vol. 24 no. 6
Type: Research Article
ISSN: 1463-5771

Keywords

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