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1 – 10 of 966Alessandro Tufano, Riccardo Accorsi and Riccardo Manzini
This paper addresses the trade-off between asset investment and food safety in the design of a food catering production plant. It analyses the relationship between the quality…
Abstract
Purpose
This paper addresses the trade-off between asset investment and food safety in the design of a food catering production plant. It analyses the relationship between the quality decay of cook-warm products, the logistics of the processes and the economic investment in production machines.
Design/methodology/approach
A weekly cook-warm production plan has been monitored on-field using temperature sensors to estimate the quality decay profile of each product. A multi-objective optimisation model is proposed to (1) minimise the number of resources necessary to perform cooking and packing operations or (2) to maximise the food quality of the products. A metaheuristic simulated annealing algorithm is introduced to solve the model and to identify the Pareto frontier of the problem.
Findings
The packaging buffers are identified as the bottleneck of the processes. The outcome of the algorithms highlights that a small investment to design bigger buffers results in a significant increase in the quality with a smaller food loss.
Practical implications
This study models the production tasks of a food catering facility to evaluate their criticality from a food safety perspective. It investigates the tradeoff between the investment cost of resources processing critical tasks and food safety of finished products.
Social implications
The methodology applies to the design of cook-warm production. Catering companies use cook-warm production to serve school, hospitals and companies. For this reason, the application of this methodology leads to the improvement of the quality of daily meals for a large number of people.
Originality/value
The paper introduces a new multi-objective function (asset investment vs food quality) proposing an original metaheuristic to address this tradeoff in the food catering industry. Also, the methodology is applied and validated in the design of a new food production facility.
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This paper aims to raise awareness of a potential planning pitfall and provide recommendations on how to assess and improve upon current practices. In potential conflict areas…
Abstract
Purpose
This paper aims to raise awareness of a potential planning pitfall and provide recommendations on how to assess and improve upon current practices. In potential conflict areas, such as the Korean Theater of Operations (KTO), military forces are required to store a portion of their ammunition combat load within depots and ammunition supply points under the control of a servicing ammunition company. This necessitates a lengthy retrieval process, as the ammunition company does not have enough resources to serve all customers simultaneously.
Design/methodology/approach
The stored combat load (SCL) retrieval process is modeled as a parallel machine scheduling problem and simulated using synthetic requirements. The current system of retrieval is contrasted against a proposed alternate system through a series of simulations scaled across three factors: number of ammunition company Soldiers, number of customer units and number of magazines.
Findings
The proposed alternate system demonstrates a significant potential for reducing the makespan of the SCL retrieval process when more than half of the magazines store SCL for multiple customers and there are more than five customers per Soldier.
Originality/value
Transitioning military units from a peacetime standing to full combat readiness as quickly as possible is of immense value within the KTO and other hostile areas with established troops not actively engaged in combat.
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Abstract
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Islam Ibrahim, Magda Sultan, Omaima Gaber Yassine, Adel Zaki, Hossam Elamir and Wafaa Guirguis
Healthcare environments are highly complex and full of variation and inefficiency. However, variation and inefficiency can be measured and improved, providing better quality care…
Abstract
Purpose
Healthcare environments are highly complex and full of variation and inefficiency. However, variation and inefficiency can be measured and improved, providing better quality care at a lower cost. This study aims to report the application of Lean Six Sigma (LSS) in a haematology laboratory in a university hospital in Egypt.
Design/methodology/approach
The authors used case study research. Applying the define, measure, analyse, improve and control phases of the DMAIC methodology together with lean tools, the problem was identified, the process mapped, the causes analysed and improvements implemented.
Findings
Results show that LSS can be successfully implemented in challenging public sector healthcare settings. Management commitment, generating and implementing ideas from frontline staff, using a variety of quality tools and previous LSS training were all key to success. This is evidence that the LSS methodology is adaptable to any process, people or place.
Originality/value
There are no publications on LSS implementation in health care in Egypt. This study demonstrates the successful use of LSS in a university hospital (public sector) in a developing country, sharing insight into the facilitators and barriers in a real context with others in the healthcare field.
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Erik Flores-Garcia, Jessica Bruch, Magnus Wiktorsson and Mats Jackson
The purpose of this paper is to explore the selection of decision-making approaches at manufacturing companies when implementing process innovations.
Abstract
Purpose
The purpose of this paper is to explore the selection of decision-making approaches at manufacturing companies when implementing process innovations.
Design/methodology/approach
This study reviews the current understanding of decision structuredness for determining a decision-making approach and conducts a case study based on an interactive research approach at a global manufacturer.
Findings
The findings show the correspondence of intuitive, normative and combined intuitive and normative decision-making approaches in relation to varying degrees of equivocality and analyzability. Accordingly, the conditions for determining a decision-making choice when implementing process innovations are revealed.
Research limitations/implications
This study contributes to increased understanding of the combined use of intuitive and normative decision making in production system design.
Practical implications
Empirical data are drawn from two projects in the heavy-vehicle industry. The study describes decisions, from start to finish, and the corresponding decision-making approaches when implementing process innovations. These findings are of value to staff responsible for the design of production systems.
Originality/value
Unlike prior conceptual studies, this study considers normative, intuitive and combined intuitive and normative decision making. In addition, this study extends the current understanding of decision structuredness and discloses the correspondence of decision-making approaches to varying degrees of equivocality and analyzability.
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Matthew Eriksen and George H. Tompson
This case describes a real family that has been running a labor-intensive business since 1992. The father, Phil Mason, runs the business with the help of his wife and two of his…
Abstract
This case describes a real family that has been running a labor-intensive business since 1992. The father, Phil Mason, runs the business with the help of his wife and two of his sons in southwestern Rhode Island. The business is a franchisee of ServiceMaster Clean. In 2006, the franchise employed 20 full-time employees and was the 50th largest ServiceMaster Clean franchise among the approximately 1,200 franchises located in the United States. Annual revenue is approximately $2.5 million. In late 2005, one of Phil℉s sons began researching the biodiesel industry. As he was growing weary of the labor-intensive nature of his franchise business, Phil fully researched the industry himself. By the middle of 2006, Phil was convinced that he could profitably manufacture biodiesel in his spare warehouse space. In July 2006, he formed Mason Biodiesel, LLC and financed the $1.5 million start-up costs through a combination of personal savings and bank debt.
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