Nadia Bahria, Imen Harbaoui Dridi, Anis Chelbi and Hanen Bouchriha
The purpose of this study is to develop a joint production, maintenance and quality control strategy involving a periodic preventive maintenance policy.
Abstract
Purpose
The purpose of this study is to develop a joint production, maintenance and quality control strategy involving a periodic preventive maintenance policy.
Design/methodology/approach
The proposed integrated policy is defined and modeled mathematically.
Findings
The paper focuses on finding simultaneously the optimal values of the preventive maintenance period, the buffer stock size, the sample size, the sampling interval and the control chart limits, such that the expected total cost per time unit is minimized.
Practical implications
The paper attempts to integrate in a single model the three main aspects of any manufacturing system: production, maintenance and quality. The considered system consists of one machine subject to a degradation process that directly affects the quality of products. The process and product quality control is carried out using an “x-bar” control chart. In the proposed model, a preventive maintenance action is performed every
Originality/value
The existing models that simultaneously consider maintenance, inventory and control charts consist of a condition-based maintenance (CBM) policy. Periodic preventive maintenance (PM) has not been considered in such models. The proposed integrated model is original, in that it links production through buffer stocks, quality through a control chart and maintenance through periodic preventive maintenance (different practical settings and modeling approach than when CBM is used). Hence, this paper addresses practical situations where, for economic or technical reasons, only systematic periodic preventive maintenance is possible.
Details
Keywords
Nadia Umair Ansari, Muhammad Zaki Rashidi and Kashif Mehmood
This paper aims to describe the lived experiences of modern urban mothers in Pakistan as they navigate shared motherhood responsibilities with family elders. This paper brings to…
Abstract
Purpose
This paper aims to describe the lived experiences of modern urban mothers in Pakistan as they navigate shared motherhood responsibilities with family elders. This paper brings to light their feelings, fears and ambitions towards safeguarding the environment for the future of their children, by reconciling ancient traditions of their female elders with contemporary sustainable consumption practices.
Design/methodology/approach
This phenomenological study explores lived experiences of urban mothers through in-depth personal interviews. Their discourse explores sharing childcare responsibilities with family matriarchs, negotiating “green” parenting strategies between intergenerational parenting partners.
Findings
Navigating life through the intersections of modernity and tradition and ethical choices and consumerism, urban mothers integrate wisdom of their ancestors into their modern lives to mitigate the environmental degradation of today.
Originality/value
This study sheds light on a unique genre of green mothers, termed as the traditionally green eco-mom, which allows modern mothers and their female elders to synchronously adopt sustainable childcare behaviours that overcome intergenerational barriers by reconciling contemporary lifestyles with traditional wisdom.