Procurement planning with batch ordering under periodic buyback contract

Farhat, Mlouka; Akbalιk, Ayşe; Sauer, Nathalie; Hadj-Alouane, Atidel B.

doi:10.1016/j.ifacol.2017.08.2418

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…Procurement planning is the purchasing process of the right quantity of products from suitable suppliers in time and with minimum costs (Farhat et al , 2017). It is the function associated with the purchasing of goods and services from various external sources of supply.…”

Section: Literature Reviewmentioning

confidence: 99%

Procurement planning as a strategic tool for public procurement effectiveness: Experience from selected public procuring entities in Dodoma city, Tanzania

Changalima

Mushi

Mwaiseje

2020

JOPP

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Purpose The significance of the public procurement function is on the survival and development of procuring entities and that of a nation at large. This study aims to focus on examining the influence of procurement planning on the effectiveness of public procurement, experience from selected public procuring entities in Dodoma city, Tanzania. Design/methodology/approach A cross-sectional design was adopted from which data were collected from 146 respondents who were purposively chosen from several public procuring entities located at Dodoma city in the United Republic of Tanzania by using a survey structured questionnaire and analysed through a binary logistic regression model. Findings Findings revealed that procurement planning as a strategic function significantly influences the effectiveness of public procurement. The binary logistic regression model included the implementation of prepared procurement plans (p = 0.039), the involvement of users as stakeholders and important institutional actors in public procurement (p = 0.033), compliance to procurement laws and regulations when planning (p = 0.016) and adequacy of budget (p = 0.042) as predictors of procurement planning were tested to be significantly related to the effectiveness of public procurement. It was concluded that public procuring entities can achieve public procurement effectiveness through procurement planning. Social implications The implications and policy recommendations of the findings of this study would be useful to procurement practitioners mostly in public procuring entities. Originality/value This study contributes to adding knowledge to the existing body of knowledge on procurement planning as an imperative activity in public procurement in Tanzania.

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Section: Literature Reviewmentioning

confidence: 99%

Procurement planning as a strategic tool for public procurement effectiveness: Experience from selected public procuring entities in Dodoma city, Tanzania

Changalima

Mushi

Mwaiseje

2020

JOPP

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“…A different algorithm was later proposed by Akbalik et al [27], who addressed a company that buys its products in batches and varies the storage cost when supply exceeds the determined capacity. At the same time, Farhat et al [28] studied batch purchases with the option of returning the items that were not sold to the supplier. When the products purchased in batches are perishable, they must be treated with special care, and the model must consider a series of constraints, as proposed by Broekmeulen and van Donselaar [29].…”

Section: Literature Reviewmentioning

confidence: 99%

A New Formulation for the Capacitated Lot Sizing Problem with Batch Ordering Allowing Shortages

et al. 2020

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This paper addresses the multi-product, multi-period capacitated lot sizing problem. In particular, this work determines the optimal lot size allowing for shortages (imposed by budget restrictions), but with a penalty cost. The developed models are well suited to the usually rather inflexible production resources found in retail industries. Two models are proposed based on mixed-integer formulations: (i) one that allows shortage and (ii) one that forces fulfilling the demand. Both models are implemented over test instances and a case study of a real industry. By investigating the properties of the obtained solutions, we can determine whether the shortage allowance will benefit the company. The experimental results indicate that, for the test instances, the fact of allowing shortages produces savings up to 17% in comparison with the model without shortages, whereas concerning the current situation of the company, these savings represent 33% of the total costs while preserving the revenue.

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“…The work described in this chapter is published in dierent conferences: ROADEF Metz (2017), see Farhat et al (2017a), and IFAC Toulouse (2017), see Farhat et al (2017b), for the case where we have w = 1 with OFB/FTL cost functions and with/without lost sales, and, INCOM Bergamo (2018), see Farhat et al (2018a), for the case where we have w > 1 with OFB cost function. The results of this chapter are submitted to the International Journal of Production Economics and the paper is accepted, see Farhat et al (2018b).…”

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confidence: 99%